CN111276086B - Display and method for reducing moiré - Google Patents

Abstract

A display and its method for reducing moiré, wherein the display includes at least one pixel array forming a display area. In this method, firstly, the moiré image displayed in the display area is detected, which is distributed at the edge of the pixel array. Next, the display area is divided into a plurality of regular areas. From these canonical areas, canonical lookup table data is generated. The area where the moiré image is distributed on the display area is divided into a plurality of auxiliary areas. The size of each normal area is larger than the size of each auxiliary area. Based on these auxiliary areas, auxiliary lookup table data is generated. Afterwards, a plurality of gray scale compensation values are generated according to the regular lookup table data and the auxiliary lookup table data.

Description

Display and method for reducing moiré

technical field

The invention relates to a display and its method for reducing moiré, and in particular to a method for reducing moiré by means of grayscale compensation and a display using the method.

Background technique

Most of the current displays are pixel-type displays, which generally include one or more pixel arrays (pixel array), wherein the pixel array includes a plurality of scan lines, a plurality of data lines and a plurality of transistors. When the display includes multiple pixel arrays, these pixel arrays are formed by splicing multiple groups of masks, so these pixel arrays are adjacent to each other and form a display area capable of displaying images.

Due to the influence of process factors, a newly manufactured display often has a moiré image (mura picture), that is, an image with uneven gray scales in the display area of the display, which reduces the image quality. Therefore, after the display is manufactured, the display will be detected and adjusted to reduce the adverse effect caused by the moiré image. However, the current methods for reducing moiré have limited effect on moiré images distributed at the edge of the pixel array. In other words, it is difficult for the existing moiré reduction methods to effectively reduce the moiré images distributed on the edge of the display area or between two adjacent pixel arrays.

Contents of the invention

The present invention proposes a method for reducing moiré, which helps to reduce moiré images distributed at the edge of the pixel array.

The method for reducing moiré provided by the present invention can be applied to a display, wherein the display includes at least one pixel array, and the pixel array forms a display area. In the above moiré reduction method, firstly, the moiré image displayed in the display area is detected, wherein the moiré image is distributed at the edge of the pixel array. Next, the display area is divided into a plurality of regular blocks, wherein these regular blocks cover the display area. From these canonical areas, canonical lookup table data is generated. The area where the moiré image is distributed on the display area is divided into a plurality of auxiliary areas (auxiliary blocks), wherein the size of each regular area is larger than the size of each auxiliary area. Based on these auxiliary areas, auxiliary lookup table data is generated. Afterwards, a plurality of gray scale compensation values are generated according to the regular lookup table data and the auxiliary lookup table data.

In at least one embodiment of the present invention, the moiré image and the auxiliary areas are distributed in the edge area of the display area.

In at least one embodiment of the present invention, the above-mentioned edge region includes at least one corner region and at least one side length region. At least one corner area is adjacent to at least one side area, and the auxiliary areas include a plurality of side areas and a plurality of corner areas, wherein the side areas are distributed in the at least one side area, and the corner areas are distributed in the at least one corner area. The size of each corner area is smaller than the size of each side length area.

In at least one embodiment of the present invention, the display includes two pixel arrays adjacent to each other. These pixel arrays form a display area, and the moiré image and these auxiliary areas are distributed in the adjacent area between the two pixel arrays.

In at least one embodiment of the present invention, the adjoining region extends along the direction of the data lines of the display. Each regular area includes a plurality of first pixels, and each auxiliary area includes a plurality of second pixels. These second pixels in the same auxiliary area are arranged in a 1×N array along the data line, where N is a positive integer.

In at least one embodiment of the present invention, the adjoining regions extend along the direction of the scan lines of the display, each normal region includes a plurality of first pixels, and each auxiliary region includes a plurality of second pixels. The second pixels in the same auxiliary area are arranged in an M×1 array along the scan line, where M is a positive integer.

In at least one embodiment of the present invention, the edge area of the display area overlaps with the adjacent area to form an overlapping area, and the moiré images are also distributed in the edge area and the overlapping area. The auxiliary areas include a plurality of first areas and a plurality of second areas. The first regions are distributed in the edge region and the adjacent region, but not in the overlapping region, and the second regions are distributed in the overlapping region, wherein the size of each second region is smaller than that of each first region.

In at least one embodiment of the present invention, the display includes four pixel arrays arranged in a 2×2 array, and these pixel arrays form a display area. The moiré image is distributed in the adjacent area between two adjacent pixel arrays and in the middle connecting area between four pixel arrays. The auxiliary areas include a plurality of first areas and a plurality of fine areas, wherein the first areas are distributed in the adjacent areas, but not in the intermediate connecting areas, and the fine areas are distributed in the intermediate connecting areas. The size of each fine area is smaller than the size of each first area and also smaller than that of the second area.

In at least one embodiment of the present invention, the size of each fine region is equal to the size of a pixel.

In at least one embodiment of the present invention, each regular area includes a plurality of first pixels, and each first area includes a plurality of second pixels. In the first regions arranged along the data lines of the display, the second pixels in the same first region are arranged in a 1×N array along the data lines, wherein N is a positive integer. In the first regions arranged along the scan lines of the display, the second pixels in the same first region are arranged in an M×1 array along the scan lines, where M is a positive integer.

In at least one embodiment of the present invention, the normal lookup table data includes a plurality of normal compensation points, and these normal compensation points correspond to the four endpoints of these normal areas. The auxiliary lookup table data includes a plurality of auxiliary compensation points, and the method for generating these gray scale compensation values according to the regular lookup table data and the auxiliary lookup table data includes the following steps. The normal compensation points and the auxiliary compensation points are rearranged, so that at least one auxiliary compensation point is set between two adjacent normal compensation points. After rearranging the normal compensation points and the auxiliary compensation points, an interpolation compensation operation is performed according to the normal compensation points and the auxiliary compensation points.

In at least one embodiment of the present invention, the method for reducing moiré further includes storing regular lookup table data and auxiliary lookup table data in a storage device.

In at least one embodiment of the present invention, the storage device includes a volatile memory and a non-volatile memory. Regular lookup table data and auxiliary lookup table data are stored in non-volatile memory.

In at least one embodiment of the present invention, the method for generating these gray scale compensation values includes the following steps. The regular look-up table data and the auxiliary look-up table data are loaded from the non-volatile memory to the volatile memory. Next, let the timing controller (Timing Controller, TCON) read and process the normal look-up table data and the auxiliary look-up table data from the volatile memory, wherein the timing controller executes rearranging these regular compensation points and these auxiliary compensation points and performing internal Interpolation compensation operation. Then, the timing controller is configured to input the gray scale compensation values to the pixel array.

The display provided by the invention includes at least one pixel array, a storage device and a timing controller. The pixel array forms a display area, wherein the display area is divided into a plurality of normal areas and a plurality of auxiliary areas. The regular areas cover the display area, and the auxiliary areas are distributed at the edge of at least one pixel array. The size of each normal area is larger than the size of each auxiliary area. The storage device stores normal look-up table data and auxiliary look-up table data, wherein the normal look-up table data includes a plurality of normal compensation points, and the auxiliary look-up table data includes a plurality of auxiliary compensation points. The normal compensation points correspond to the normal areas, and the auxiliary compensation points correspond to the auxiliary areas. The timing controller is electrically connected to at least one pixel array and the storage device, and reads the normal look-up table data and the auxiliary look-up table data from the storage device, wherein the timing controller rearranges the normal compensation points and the auxiliary compensation points to be adjacent thereto Set at least one auxiliary compensation point between two regular compensation points. After rearranging the normal compensation points and the auxiliary compensation points, the timing controller generates a plurality of gray scale compensation values according to the normal compensation points and the auxiliary compensation points.

In at least one embodiment of the present invention, the storage device includes a non-volatile memory and a volatile memory. The non-volatile memory is electrically connected to the timing controller, and stores normal look-up table data and auxiliary look-up table data. The volatile memory is electrically connected to the timing controller. After the display is started, the normal look-up table data and the auxiliary look-up table data are loaded into the volatile memory, and the timing controller reads and processes the regular look-up table data and the auxiliary look-up table data from the volatile memory, and converts these grayscale Compensation values are input to the pixel array.

In at least one embodiment of the present invention, the auxiliary regions are distributed in the edge region of the display region. The edge area includes at least one corner area and at least one long area. At least one corner area is adjacent to at least one side area, and the auxiliary areas include a plurality of side areas and a plurality of corner areas, wherein the side areas are distributed in the at least one side area, and the corner areas are distributed in the at least one corner area. The size of each corner area is smaller than the size of each side length area.

In at least one embodiment of the present invention, the display includes two pixel arrays adjacent to each other. The pixel arrays form the display area, and the auxiliary areas are distributed in an adjacent area between the two pixel arrays.

In at least one embodiment of the present invention, each pixel array includes a plurality of data lines. The adjacent area extends along the direction of one of the data lines. Each regular area includes a plurality of first pixels, and each auxiliary area includes a plurality of second pixels. These second pixels in the same auxiliary area are arranged in a 1×N array along the data line, where N is a positive integer.

In at least one embodiment of the present invention, each pixel array includes a plurality of scan lines. The adjacent area extends along the direction of one of the scan lines. Each regular area includes a plurality of first pixels, and each auxiliary area includes a plurality of second pixels. The second pixels in the same auxiliary area are arranged in an M×1 array along the scan line, where M is a positive integer.

In at least one embodiment of the present invention, the display includes four pixel arrays arranged in a 2×2 array, and these pixel arrays form a display area. These auxiliary regions include a plurality of first regions and a plurality of fine regions, wherein the first regions are distributed in an adjacent region between two adjacent pixel arrays, but not distributed in a middle between four pixel arrays contiguous area. These fine areas are distributed in the middle connecting area, and the size of each fine area is smaller than the size of each first area.

In at least one embodiment of the present invention, each pixel array includes a plurality of scan lines and a plurality of data lines, wherein each normal area includes a plurality of first pixels, and each first area includes a plurality of second pixels. The size of each fine area is equal to the size of one second pixel. In the first regions arranged along one of the data lines, the second pixel arrangements of the same first region are arranged in a 1×N array along the data line, wherein N is a positive integer. In the first regions arranged along one of the scan lines, the second pixels in the same first region are arranged in an M×1 array along the scan line, where M is a positive integer.

Based on the above, since the size of each normal area is larger than the size of each auxiliary area, the auxiliary lookup table data generated by these small auxiliary areas can reduce the error of interpolation compensation operation, improve the accuracy of gray scale compensation value, and Effectively reduce or eliminate moiré images distributed at the edge of the pixel array.

In order to make the features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic flowchart of a method for reducing moiré in at least one embodiment of the present invention.

FIG. 2A is a schematic top view of a display according to at least one embodiment of the present invention.

FIG. 2B is a schematic top view of the display area divided into a plurality of normal areas in FIG. 2A .

FIG. 2C is a schematic top view of the display area divided into a plurality of normal areas and a plurality of auxiliary areas in FIG. 2A .

FIG. 2D is a partially enlarged schematic diagram of the virtual frame 2D in FIG. 2C .

FIG. 2E is a partially enlarged schematic diagram of FIG. 2D .

2F is a block schematic diagram of a display according to at least one embodiment of the present invention.

FIG. 2G is a schematic flowchart of executing step S105 in FIG. 1 .

FIG. 3A is a schematic top view of a display according to another embodiment of the present invention.

FIG. 3B is a schematic top view of the display area divided into a plurality of normal areas and a plurality of auxiliary areas in FIG. 3A .

FIG. 3C is a partially enlarged schematic diagram of the dashed frame 3C in FIG. 3B .

FIG. 3D is a partially enlarged schematic diagram of FIG. 3C .

FIG. 4A is a schematic top view of a display according to another embodiment of the present invention.

FIG. 4B is a schematic top view of the display area divided into a plurality of regular areas and a plurality of auxiliary areas in FIG. 4A .

FIG. 4C is a partially enlarged schematic diagram of the dashed frame 4C in FIG. 4B .

FIG. 4D is a partially enlarged schematic view of FIG. 4C .

FIG. 5A is a schematic top view of a display according to another embodiment of the present invention.

FIG. 5B is a schematic top view of the display area divided into a plurality of normal areas and a plurality of auxiliary areas in FIG. 5A .

FIG. 5C is a partially enlarged schematic view of the overlapping area I52 in FIG. 5B .

FIG. 5D is a partially enlarged schematic diagram of the overlapping region I51 in FIG. 5B .

FIG. 5E is a partially enlarged schematic view of the middle connecting region M5 in FIG. 5B .

Explanation of reference signs:

2D, 3C, 4C: imaginary frame

20, 32, 41, 50: moiré image

21: Testing instrument

51: horizontal stripes

52: vertical stripes

53: Edge stripes

200, 300, 400, 500: display

201, 301, 401, 501: display area

201r: Regular area

202: Edge area

202a: first pixel

202b: second pixel

202c: corner area

202s: side length area

210: pixel array

211: scan line

212: data line

220: storage device

221: Non-volatile memory

221a, 221r: address

222: Volatile memory

230: timing controller

231: transmission interface

232: processing unit

232i: interface

A41: Auxiliary area

B51, B52: the second area

C2: corner area

F5: fine area

I51, I52: overlapping area

M5: Middle connected area

P21: Regular compensation point

P22: auxiliary compensation point

S21, S22: side length area

S100～S105, S150～S152: steps

Detailed ways

In the following text, the same elements will be denoted by the same element symbols. Secondly, in order to clearly present the technical features of the present disclosure, the dimensions (such as length, width, thickness, and depth) of elements (such as layers, films, substrates, and regions) in the drawings will be enlarged in different ratios. Therefore, descriptions and explanations of the following embodiments are not limited to the dimensions and shapes of the elements shown in the drawings, but should cover the deviations in size, shape and both caused by actual process and/or tolerances. For example, a planar surface shown in the figures may have rough and/or non-linear features, while an acute angle shown in the figures may be rounded. Therefore, the components shown in the drawings of the present disclosure are mainly for illustration, and are not intended to accurately depict the actual shape of the components, nor are they used to limit the claims of the present disclosure.

Secondly, words such as "about", "approximately" or "substantially" appearing in the present disclosure not only cover the explicitly stated values and numerical ranges, but also cover the values understood by those skilled in the art to which the invention pertains. Allowable deviation range, wherein the deviation range can be determined by the error generated during measurement, and the error is caused by the limitation of the measurement system or process conditions, for example. Additionally, "about" can mean within one or more standard deviations of the recited values, eg, within ±30%, ±20%, ±10%, or ±5%. Words such as "about", "approximately" or "substantially" appearing in this disclosure can select acceptable deviation ranges or standard deviations based on optical properties, etching properties, mechanical properties or other properties, not just One standard deviation is used to apply all the above optical properties, etching properties, mechanical properties and other properties.

The method for reducing moiré of the present invention can be applied to displays, and is particularly applied to pixel-type displays, wherein the method for reducing moiré of the present invention is suitable for processing moiré images distributed at the edge of the pixel array, thereby helping to reduce or Eliminates such moiré images. In detail, the above moiré reduction method can effectively reduce or eliminate at least one moiré image distributed in the adjacent area between two adjacent pixel arrays and at least one edge area of the display area, so as to maintain or improve the image quality, thereby helping The display provides high-quality images for users to watch.

FIG. 1 is a schematic flowchart of a method for reducing moire according to at least one embodiment of the present invention, and FIG. 2A is a schematic top view of a display according to at least one embodiment of the present invention. Please refer to FIG. 1 and FIG. 2A, the method for reducing moiré in this embodiment can be applied to a display 200, which can be a pixel-type display, such as a liquid crystal display (Liquid Crystal Display, LCD) or an organic light emitting diode display (Organic Light Emitting Display, OLED Display). The display 200 includes at least one pixel array 210 , and the embodiment shown in FIG. 2A is an example of the display 200 including only one pixel array 210 , wherein the pixel array 210 can form the display area 201 of the display 200 .

The pixel array 210 includes a plurality of parallel scan lines 211, a plurality of parallel data lines 212 and a plurality of transistors (not shown), wherein these scan lines 211 and these data lines 212 are electrically connected to these transistors, and the above-mentioned transistors may be thin film transistor. In the embodiment shown in FIG. 2A , the scan lines 211 extend along the horizontal direction, and the data lines 212 extend along the vertical direction, wherein the scan lines 211 and the data lines 212 intersect each other. In addition, the display 200 may also include a plurality of pixel arrays 210 , so the display 200 shown in FIG. 2A is only for illustration and does not limit the number of pixel arrays 210 .

In the method for reducing moiré shown in FIG. 1 , firstly, step S100 is executed to detect the display area 201 of the display 200 to confirm whether a moiré image appears in the display area 201 . The detection instrument (not shown) used to perform step S100 includes an image acquisition device, such as a camera or a video camera. During the execution of step S100 , the display area 201 of the display 200 will firstly display an image for detecting the moiré image, which may be a grayscale image. Afterwards, the image acquisition device captures the display area 201 to acquire an image of the display area 201 .

When the moiré image 20 distributed on the edge of the pixel array 210 appears in the display area 201, the display 200 uses image processing technology to detect the moiré image 20 displayed in the display area 201 from the image of the display area 201 acquired by the image acquisition device. , so as to know the distribution position of the moiré image 20 on the display area 201 , wherein the moiré image 20 in the drawing is represented by an area filled with dots. Since the display 200 shown in FIG. 2A only includes one pixel array 210 , the edge of the pixel array 210 is also equal to the edge area of the display area 201 (not marked in FIG. 2A ). Therefore, the moiré images 20 are distributed in the edge area of the display area 201 , that is, the moiré images 20 are located at the edge of the display area 201 , as shown in FIG. 2A .

Referring to FIG. 1 and FIG. 2B , next, step S101 is executed to divide the display area 201 into a plurality of regular areas 201 r , wherein the regular areas 201 r are arranged in an array and cover the entire display area 201 , as shown in FIG. 2B . Therefore, some regular regions 201r will also appear in the region where the moiré image 20 is distributed. In addition, in the embodiment shown in FIG. 2B , the sizes and shapes of these regular regions 201r are the same as each other, and the shape of each regular region 201r may be a square.

Afterwards, step S102 is executed to generate regular lookup table data according to these regular regions 201r. The normal look-up table data has a plurality of normal gray scale compensation values, and these normal gray scale compensation values can be obtained by measuring and calculating by the detection instrument in step S100. There are several ways to generate regular lookup table data. For example, the above-mentioned detection instrument can compare the gray scale value of the display area 201 with the target gray scale value input by the detection instrument to determine the gray scale value to be compensated for the display area 201 (i.e. the normal gray scale compensation value), thereby generating a regular search table data. When the display area 201 is brighter than the input target grayscale value, the compensation value is negative to reduce the grayscale value. Conversely, when the display area 201 is darker than the input target grayscale value, the compensation value is a positive number to increase the grayscale value.

In actual situations, sometimes not only the moiré image 20 will appear in the display area 201, but also other moiré images (not shown) distributed outside the edge of the pixel array 210 will appear, wherein the regular area 201r generated by these normal The lookup table data can reduce moiré images other than moire image 20 . However, formal look-up table data has limited effectiveness in reducing moiré images 20 . In detail, the moiré image 20 distributed on the edge of the display area 201 includes four frame-shaped strip images (not shown), wherein two strip images extend along the direction of the scan line 211 (horizontal direction), and The other two striped images extend along the direction of the data line 212 (vertical direction). Regular lookup table data is difficult to effectively reduce some elongated moiré images (such as the above-mentioned strip images), so that there is no significant effect in reducing the moiré image 20 .

Please refer to Fig. 1 and Fig. 2C, then, execute step S103, divide the region where the moiré image 20 is distributed on the display region 201 into a plurality of auxiliary regions, so the display region 201 is divided into a plurality of regular regions 201r and a plurality of auxiliary regions. Auxiliary area. These auxiliary areas are formed on the area occupied by the moiré image 20 on the display area 201 and its adjacent areas. In this embodiment, these auxiliary areas are only distributed in the edge area 202 of the display area 201 , but are not distributed in areas other than the edge area 202 .

The edge area 202 includes at least one corner area 202c and at least one side length area 202s, wherein at least one corner area 202c is adjacent to at least one side length area 202s. In order to clearly present the corner area 202c and the side length area 202s, FIG. 2C depicts the outlines of the corner area 202c and the side length area 202s with thick lines. In the embodiment shown in FIG. 2C , the edge region 202 includes four corner regions 202c and four side length regions 202s, wherein one corner region 202c is adjacent to one side length region 202s, so that these corner regions 202c and these side length regions Region 202s surrounds a rectangle. In addition, two of the side length regions 202s extend along the vertical direction, while the other two side length regions 202s extend along the horizontal direction. Therefore, in the edge region 202 in FIG. 2C , two side length regions 202s are vertically oriented, while the other two side length regions 202s are horizontally oriented.

These auxiliary areas include a plurality of side length areas S21 , S22 and a plurality of corner areas C2 . That is to say, the single auxiliary area is the side length areas S21, S22 or the corner area C2. The side length regions S21 and S22 are distributed in the side length regions 202s, and the corner regions C2 are distributed in the corner regions 202c. From FIG. 2C , the size of each corner area C2 and the size of each side length area S21 and S22 are smaller than the size of each regular area 201r, so the size of each regular area 201r is larger than the size of each auxiliary area. In addition, the size of each corner area C2 is smaller than the size of each side length area S21 or S22 , so the corner area C2 is the smallest area among these auxiliary areas, and the sizes of these auxiliary areas are also different.

The extension directions of the side length regions S21 and S22 are different, wherein the side length region S21 extends along the direction of the scan line 211 (horizontal direction), while the side length region S22 extends along the direction of the data line 212 (vertical direction). and extend (wherein the scan line 211 and the data line 212 are both shown in FIG. 2A ). In addition, from FIG. 2C, each side length region S21 extends along the horizontal side length region 202s, and each side length region S22 extends along the vertical side length region 202s, so the side length region S21 S22 and S22 generally extend along the moiré image 20 .

Afterwards, step S104 is executed to generate auxiliary look-up table data according to these auxiliary areas. The auxiliary look-up table data has a plurality of auxiliary gray-scale compensation values, and like the regular look-up table data, these auxiliary gray-scale compensation values can be obtained by measuring and calculating by the detection instrument in step S100. There are several ways to generate auxiliary lookup table data. For example, similar to the method for generating normal gray scale compensation values, the above-mentioned detection instrument compares the difference between the gray scale values of the side length area 202s and the corner area 202c of the display area 201 and the input target gray scale value to determine the edge length. The gray scale values to be compensated for both the long area 202s and the corner area 202c (ie auxiliary gray scale compensation values), thereby generating auxiliary look-up table data.

FIG. 2D is a partially enlarged schematic diagram of the dashed box 2D (at the upper left corner) in FIG. 2C . Please refer to FIG. 1 and FIG. 2D , the normal lookup table data includes a plurality of normal compensation points P21 , and the auxiliary lookup table data includes a plurality of auxiliary compensation points P22 . In FIG. 2D and subsequent drawings, the normal compensation point P21 is represented by a black dot, and the auxiliary compensation point P22 is represented by a white dot. Each normal compensation point P21 represents a normal look-up table and has multiple normal gray-scale compensation values, and each auxiliary compensation point P22 represents an auxiliary look-up table and has multiple auxiliary gray-scale compensation values. Since the normal gray scale compensation value and the auxiliary gray scale compensation value can both be measured and calculated by the detection instrument in step S100 , the normal compensation point P21 and the auxiliary compensation point P22 are also measured and calculated by the detection equipment.

The difference between the normal compensation point P21 and the auxiliary compensation point P22 is that: the normal compensation point P21 and the auxiliary compensation point P22 respectively correspond to regions of different sizes. The regular compensation points P21 correspond to the large-sized regular areas 201r, and the auxiliary compensation points P22 correspond to the small-sized auxiliary areas (ie, the side length areas S21, S22 and the corner areas C2). Taking FIG. 2D as an example, the normal compensation points P21 correspond to the four endpoints (also equal to the four corners) of the normal regions 201r. In other words, the four normal compensation points P21 are respectively located at the four end points of a normal area 201r, and all the normal compensation points P21 are arranged in these normal areas 201r. Each auxiliary compensation point P22 corresponds to an end point of one of the auxiliary areas. That is to say, each auxiliary compensation point P22 is located at one end point of a single side length area S21, S22 or corner area C2, and all auxiliary compensation points P22 and some normal compensation points P21 are arranged to form these side length areas S21, S22 and these corners Area C2.

2D, these auxiliary compensation points P22 are interposed between these normal compensation points P21, and each of some auxiliary compensation points P22 is located between two adjacent normal compensation points P21 (for example, the side length area S21 and S22 ), and each of the other auxiliary compensation points P22 is located between four adjacent regular compensation points P21 (for example, the corner area C2 ). Each regular area 201r is formed by four adjacent regular compensation points P21, and each auxiliary area (ie, side length areas S21, S22 or corner area C2) is formed by adjacent regular compensation points P21 and auxiliary compensation points formed by P22. Taking Figure 2D as an example, the side length area S21 or S22 is formed by two regular compensation points P21 and three auxiliary compensation points P22 adjacent to each other, while the corner area C2 is formed by one regular compensation point P21 and three auxiliary compensation points formed by P22.

FIG. 2E is a partially enlarged schematic diagram of FIG. 2D , wherein FIG. 2E shows four areas connected to each other: regular area 201r, side length areas S21, S22, and corner area C2. Referring to FIG. 2D and FIG. 2E, each normal area 201r includes a plurality of first pixels 202a, and each auxiliary area (ie, each of the side length areas S21, S22 and the corner area C2) includes a plurality of second pixels 202b, wherein the first pixels 202b The size and structure of the first pixel 202a and the second pixel 202b are basically the same, and the only difference lies in the areas to which they belong (regular area 201r and auxiliary area).

The first pixels 202a in each normal area 201r can be arranged in an A×A array, and the second pixels 202b in each auxiliary area can be arranged in a P×Q array, wherein A, P and Q are all positive integers. Taking FIG. 2E as an example, each regular area 201r includes 64 first pixels 202a, and the 64 first pixels 202a are arranged in an 8×8 array. Each side length area S21 or S22 includes 32 second pixels 202b, wherein the 32 second pixels 202b in each side length area S21 are arranged in an 8×4 array, and the 32 second pixels 202b in each side length area S22 Arranged in a 4×8 array. Therefore, the sizes of the side length regions S21 and S22 are substantially the same, but the extending directions of the side length regions S21 and S22 are different. The side length region S21 extends along the direction of the scan line 211 (horizontal direction), and the side length region S22 extends along the direction of the data line 212 (vertical direction). In addition, a single regular region 201r and a single side length region S22 respectively correspond to 8 scan lines 211 , and a single corner region C2 and a single side length region S21 respectively correspond to 4 scan lines 211 .

Although in the embodiment shown in FIG. 2E, the first pixels 202a in the normal region 201r are arranged in an 8×8 array, the second pixels 202b in the side length region S21 are arranged in an 8×4 array, and the side length region S22 However, in other embodiments, the first pixels 202a in the regular area 201r and the second pixels 202b in the auxiliary area can also be arranged in other forms of arrays, for example, the regular area 201r The first pixels 202a in the area S21 are arranged in a 6×6 array, the second pixels 202b in the side length region S21 are arranged in a 6×2 array, and the second pixels 202b in the side length region S22 are arranged in a 2×6 array. Therefore, the regular area 201r and the auxiliary area shown in FIG. 2E do not limit the arrangement of the first pixels 202a and the second pixels 202b.

Please refer to FIG. 1 , FIG. 2D and FIG. 2E , and then, step S105 is executed to generate a plurality of gray scale compensation values according to the regular lookup table data and the auxiliary lookup table data. Although these normal compensation points P21 and these auxiliary compensation points P22 included in the normal look-up table data and the auxiliary look-up table data can compensate gray scale values, the normal compensation points P21 and the auxiliary compensation points P22 can only compensate the normal area 201r and the auxiliary area (i.e. The grayscale values of the four endpoints of each of the side length regions S21, S22 and the corner region C2) are not compensated to the grayscale values of other regions other than the endpoints.

For this, in step S105 , interpolation and compensation calculations are performed based on the normal compensation points P21 and the auxiliary compensation points P22 to obtain the gray scale compensation values of other areas except the end points of the normal area 201r and the auxiliary area. In this way, all the first pixels 202a in each normal area 201r and all the second pixels 202b in each side length area S21, each side length area S22, and each corner area C2 are compensated to the corresponding gray scale compensation value by using the above-mentioned gray scale compensation value. order value, thereby effectively reducing or eliminating the moiré image, especially reducing or eliminating the moiré image 20.

2F is a block schematic diagram of a display according to at least one embodiment of the present invention. Referring to FIG. 1 and FIG. 2F , the display 200 further includes a storage device 220 and a timing controller 230 , wherein the timing controller 230 is electrically connected to the pixel array 210 and the storage device 220 . After generating the regular lookup table data (step S102 ) and the auxiliary lookup table data (step S104 ), the regular lookup table data and the auxiliary lookup table data can be stored in the storage device 220 .

The timing controller 230 may include a transmission interface 231, which may be an integrated circuit bus to a serial peripheral interface (I ² C to SPI, wherein the full name of I ² C is Inter-Integrated Circuit, and the full name of SPI is SerialPeripheral Interface ) or asynchronous serial communication (such as RS-232). Before step S100 is performed, the detection instrument 21 used for measuring and calculating to obtain normal and auxiliary gray scale compensation values is first electrically connected to the transmission interface 231 . After the testing instrument 21 generates the regular look-up table data and the auxiliary look-up table data, the testing instrument 21 first inputs the regular look-up table data and the auxiliary look-up table data to the transmission interface 231 . Next, the transmission interface 231 transmits the regular lookup table data and the auxiliary lookup table data to the storage device 220, thereby storing the regular lookup table data and the auxiliary lookup table data in the storage device 220, wherein the regular lookup table data and the auxiliary lookup table data can be burned. The recording mode is stored in the storage device 220.

In this embodiment, the storage device 220 may include a non-volatile memory (Non-Volatile Memory, NVM) 221 and a volatile memory (Volatile Memory, VM) 222 . The non-volatile memory 221 is, for example, a flash memory (flash) or a read-only memory (Read-Only Memory, ROM), and the volatile memory 22 is, for example, a random access memory (Random Access Memory, RAM). The access memory (RAM) may be a synchronous dynamic random-access memory (Synchronous Dynamic Random-Access Memory, SDRAM). The non-volatile memory 221 stores regular look-up table data and auxiliary look-up table data, wherein the regular look-up table data and the auxiliary look-up table data are respectively stored in two different addresses 221r and 221a of the non-volatile memory 221 .

FIG. 2G is a schematic flowchart of executing step S105 in FIG. 1 . Please refer to FIG. 2F and FIG. 2G , according to the regular look-up table data and the auxiliary look-up table data, the method for generating these gray scale compensation values includes the following steps. Firstly, step S150 is executed to load the regular lookup table data and auxiliary lookup table data from the nonvolatile memory 221 to the volatile memory 222 . The speed at which the timing controller 230 reads the data in the volatile memory 222 is usually faster than the speed at which the timing controller 230 reads the data in the non-volatile memory 221 . Therefore, allowing the regular lookup table data and the auxiliary lookup table data to be loaded into the volatile memory 222 first can shorten the time for the timing controller 230 to read and process the regular lookup table data and the auxiliary lookup table data. However, currently there is a non-volatile memory 221 with fast data reading speed, such as a flash memory with fast reading capability, so in the display 200 of other embodiments, especially in the small-sized display 200, store The device 220 may also only include the non-volatile memory 221 without including the volatile memory 222 .

Next, step S151 is executed, so that the timing controller 230 reads and processes the regular look-up table data and the auxiliary look-up table data from the volatile memory 222, wherein the timing controller 230 executes rearranging the regular compensation points P21 and the auxiliary compensation points P22 (see FIG. 2D ) and perform the above interpolation compensation operation to generate these gray scale compensation values. Since the regular lookup table data is stored in the address 221r of the nonvolatile memory 221, and the auxiliary lookup table data is stored in the address 221a of the nonvolatile memory 221, wherein the addresses 221r and 221a are different from each other, the timing controller 230 must Rearrange these normal compensation points P21 and these auxiliary compensation points P22 to set at least one auxiliary compensation point P22 between two adjacent normal compensation points P21, just like the normal compensation point P21 and auxiliary compensation point P22 shown in FIG. 2D . Afterwards, the rearranged normal compensation points P21 and auxiliary compensation points P22 are stored in the volatile memory 222 .

The timing controller 230 may further include a processing unit 232, which is, for example, a De-Mura Compensation processor (De-MuraCompensation, DMC), wherein the processing unit 232 is used to perform the above-mentioned rearrangement of the normal compensation point P21 and the auxiliary compensation point P22 and perform The above-mentioned interpolation compensation operation. The processing unit 232 may have an interface 232i, which is, for example, a Dynamic Random Access Memory (DRAM) interface. The interface 232i is electrically connected to the nonvolatile memory 221 and the volatile memory 222, so that the processing unit 232 can read the regular lookup table data and the auxiliary lookup table data from the nonvolatile memory 221 via the interface 232i, and transmit the regular lookup table data. table data and auxiliary look-up table data to volatile memory 222 . After rearranging the regular compensation point P21 and the auxiliary compensation point P22 , the timing controller 230 performs interpolation compensation operations according to the regular compensation point P21 and the auxiliary compensation point P22 to generate these gray scale compensation values.

It is worth mentioning that the above step of rearranging the normal compensation point P21 and the auxiliary compensation point P22 is based on the condition that the storage device 220 has stored auxiliary look-up table data. If the storage device 220 does not enable the relevant setting of the auxiliary look-up table function and store the auxiliary look-up table data, the timing controller 230 will only perform interpolation compensation calculations based on these normal compensation points P21, and will not rearrange these normal compensation points P21 and These auxiliary compensation points P22. In other words, when the related setting of the auxiliary look-up table is turned off, the display 200 does not need the data of the auxiliary look-up table, and will not perform the above rearranging steps.

In addition, in other embodiments, under the condition that the storage device 220 has stored the normal look-up table data and the auxiliary look-up table data, the timing controller 230 may also determine whether to read the auxiliary look-up table data according to the user's setting. When the timing controller 230 decides not to read the auxiliary look-up table data, the timing controller 230 only performs interpolation and compensation calculations based on the normal compensation points P21 and does not rearrange the normal compensation points P21 and the auxiliary compensation points P22 .

After these gray scale compensation values are generated, step S152 is executed to make the timing controller 230 input these gray scale compensation values to the pixel array 210, wherein the processing unit 232 of the timing controller 230 can execute the gray scale compensation input to the pixel array 210 work. In this way, the first pixels 202a and the second pixels 202b (see FIG. 2E ) can receive corresponding grayscale compensation values to reduce or eliminate the moiré image, especially to reduce or eliminate the moiré as shown in FIG. 2A The image 20 improves the image quality of the display 200 .

Please refer to FIG. 2C and FIG. 2D again, the gray scale values of the moiré image 20 in the extending direction are relatively consistent, but the gray scale values in the vertical direction to the extending direction are relatively different. In detail, in the moiré image 20, the gray scale values of the horizontal strip images in the horizontal direction are relatively consistent, but there are large differences in the gray scale values in the vertical direction, resulting in obvious bright spots. Dark divide. Similarly, the gray scale values in the vertical direction of the vertical strip image are relatively consistent, but there are large differences in the gray scale values in the horizontal direction, resulting in a clear boundary between light and dark.

Each auxiliary area generally extends along the moiré image 20 . For example, each side length area S21 extends along a horizontal strip image, and each side length area S22 extends along a vertical strip image, so that in the direction perpendicular to the extension of the moiré image 20, the auxiliary The number of compensation points P22 increases, while the distance between two adjacent compensation points (eg, auxiliary compensation point P22 and normal compensation point P21 ) decreases. In this way, the error of the interpolation compensation operation can be reduced, so as to effectively reduce or eliminate the moiré image 20 . In addition, in this embodiment, the corner area C2 is the area with the smallest size, so the auxiliary compensation points P22 are densely distributed in the corner area 202c, so as to increase the distribution density of the auxiliary compensation points P22 in the corner area 202c. Therefore, the interpolation compensation calculation results obtained according to these corner regions C2 have very little error, which improves the accuracy of the gray scale compensation value corresponding to the corner region 202c, thereby effectively reducing or eliminating the moiré image 20 .

FIG. 3A is a schematic top view of a display according to another embodiment of the present invention. Please refer to FIG. 3A , the display 300 in FIG. 3A is similar to the aforementioned display 200 , and the display 300 also includes the storage device 220 and the timing controller 230 as shown in FIG. 2F . The difference between the displays 200 and 300 is that the display 300 includes two pixel arrays 210 adjacent to each other. The two pixel arrays 210 form a display area 301 , and the two pixel arrays 210 shown in FIG. 3A can be formed by splicing two sets of masks.

The two pixel arrays 210 adjacent to each other sometimes cause a stripe-shaped moiré image 32 to appear in the display area 301 , wherein the moiré image 32 in the drawing is represented by a dot-filled area. The moiré images 32 are distributed at the edge of the pixel arrays 210, and further distributed in the adjacent area between the two pixel arrays 210 (not shown in FIG. 3A ). The adjacent area (that is, the area where the moiré image 32 in FIG. 3A is distributed) extends along the direction (vertical direction) of the data line 212 of the display 300, so the moiré image 32 is a vertical stripe.

FIG. 3B is a schematic top view of the display area divided into a plurality of normal areas and a plurality of auxiliary areas in FIG. 3A . Referring to FIG. 1 and FIG. 3B, when the moiré image 32 appears in the display area 301, although the moiré images 20 and 32 appearing on the displays 200 and 300 are different from each other, the method for reducing or eliminating the moiré images 20 and 32 But similarly, that is, the display 300 can also perform the steps S100 to S105 disclosed in FIG. 1 (including the step S105 disclosed in FIG. 2G ) to reduce or eliminate the moiré image 32 . However, different from the moiré reduction method of the previous display 200, when the display 300 executes step S103 in FIG. Side length areas S21, S22 and corner area C2).

After the display 300 executes steps S101 and S103, the display area 301 of the display 300 is divided into a plurality of normal areas 201r and a plurality of auxiliary areas A32. The area distributed by the moiré image 32 on the display area 301 is divided into these auxiliary areas A32, so these auxiliary areas A32 will be formed on the area occupied by the moiré image 32 on the display area 301 and its adjacent areas. Since the moiré image 32 is distributed in the adjacent area between the two pixel arrays 210 , these auxiliary areas A32 are also distributed in the above-mentioned adjacent area.

The size of each auxiliary area A32 is smaller than that of each regular area 201r, and the shapes of the auxiliary area A32 and the regular area 201r may be different, wherein the auxiliary area A32 may be a rectangle, but not a square. In addition, each auxiliary area A32 has a relatively small size, and the display area 301 is divided into a large number of auxiliary areas A32, so that FIG. 3B cannot clearly show the real size of the auxiliary area A32. Therefore, FIG. 3B discloses the distribution, arrangement and shape of the auxiliary areas A32 on the display area 301 , but does not present the actual number of these auxiliary areas A32 and the actual size of each auxiliary area A32 . The real size of the auxiliary area A32 is shown in the subsequent FIG. 3C and FIG. 3D . In addition, FIG. 3B does not draw these auxiliary regions A32 in the moiré image 32 to avoid confusion of the drawing and make it difficult to clearly present the moiré image 32 .

FIG. 3C is a partial enlarged schematic view of the dashed box 3C (at the upper middle) in FIG. 3B . Referring to Fig. 3B and Fig. 3C, after display 300 produces normal look-up table data (step S102) and auxiliary look-up table data (step S104), these normal compensation points P21 of normal look-up table data correspond to four of these normal areas 201r End points, and these auxiliary compensation points P22 correspond to these auxiliary areas A32, wherein each auxiliary compensation point P22 corresponds to an end point of one of the auxiliary areas A32. Taking FIG. 3C as an example, the four end points of some auxiliary area A32 correspond to four auxiliary compensation points P22 respectively, while the four end points of some auxiliary area A32 correspond to two auxiliary compensation points P22 and two normal compensation points P21. In other words, some auxiliary areas A32 are formed by two auxiliary compensation points P22 and two normal compensation points P21, and some auxiliary areas A32 are formed by four auxiliary compensation points P22.

FIG. 3D is a partially enlarged schematic diagram of FIG. 3C , wherein the area shown in FIG. 3D is surrounded by four adjacent regular compensation points P21 and a plurality of auxiliary compensation points P22 . 3C and 3D, each auxiliary area A32 includes a plurality of second pixels 202b, and these second pixels 202b of the same auxiliary area A32 are along the data line 212 (that is, along the vertical direction, wherein the data line 212 shows 3A) are arranged in a 1×N array, where N is a positive integer. Taking FIG. 3D as an example, each auxiliary area A32 includes 8 second pixels 202b, and the 8 second pixels 202b of the same auxiliary area A32 are arranged in a 1×8 array along the vertical direction. Since each regular area 201r includes 64 first pixels 202a, the size of each regular area 201r is obviously larger than the size of each auxiliary area A32.

Since the moiré image 32 is a vertical stripe, the gray scale value of the moiré image 32 in the vertical direction (along the direction of the data line 212) is relatively consistent, but the gray scale value in the horizontal direction (along the direction of the scanning line 211) is relatively consistent. However, there is a large difference in the order value, resulting in a clear boundary between light and dark. Therefore, the effect of reducing the moiré image 20 only by regular lookup table data is limited. However, in the embodiment shown in FIG. 3C and FIG. 3D , each auxiliary area A32 extends along the moire image 32, that is, extends along the direction of the data line 212 (vertical direction), and the shape of each auxiliary area A32 A rectangle running vertically. Therefore, the number of auxiliary compensation points P22 arranged along the direction (horizontal direction) of the scan line 211 can be increased, and the distance between two adjacent auxiliary compensation points P22 in the horizontal direction will also be reduced to reduce interpolation The error in the horizontal direction of the compensation calculation can effectively reduce or eliminate the moiré image 32 .

FIG. 4A is a schematic top view of a display according to another embodiment of the present invention. Please refer to FIG. 4A , the display 400 in FIG. 4A is similar to the display 300 in FIG. 3A . For example, the display 400 includes a storage device 220 and a timing controller 230 as shown in FIG. 2F and two pixel arrays 210 adjacent to each other. The two pixel arrays 210 form a display area 401 , wherein the two pixel arrays 210 can also be formed by splicing two sets of masks. Secondly, as with the display 300 , sometimes two adjacent pixel arrays 210 may also cause a striped moiré image 41 to appear in the display area 401 . The moiré image 41 in the figure is represented by a region filled with dots, and is distributed in the adjacent area between the two pixel arrays 210 (the adjacent area is not marked in FIG. 4A ).

The difference between the displays 300 and 400 is that the two pixel arrays 210 of the display 300 in FIG. 3A are aligned left and right, but the two pixel arrays 210 of the display 400 in FIG. 4A are aligned vertically. Therefore, the adjacent area in the embodiment of FIG. 4A (that is, the area where the moiré image 41 in FIG. 4A is distributed) extends along the direction (horizontal direction) of the scan line 211 of the display 400, so the moiré image 41 is horizontal. stripes.

FIG. 4B is a schematic top view of the display area divided into a plurality of regular areas and a plurality of auxiliary areas in FIG. 4A . Referring to FIG. 1 and FIG. 4B , the display 400 can also implement the moiré reduction method disclosed in FIG. 1 (including the step S105 disclosed in FIG. 2G ) to effectively reduce or eliminate the moiré image 41 . Therefore, the moiré reduction methods of the displays 300 and 400 are similar. For example, the display 400 can also execute steps S101 and S103 as shown in Figure 1, divide the display area 401 into a plurality of regular areas 201r, and divide the area where the moiré image 41 is distributed on the display area 401 into a plurality of auxiliary areas A41. Therefore, the display area 401 is divided into a plurality of regular areas 201r and a plurality of auxiliary areas A41, wherein the size of each auxiliary area A41 is smaller than the size of each regular area 201r.

Similar to the situation in FIG. 3B , each auxiliary area A41 has a relatively small size, and the display area 401 is divided into a large number of auxiliary areas A41 , so that FIG. 4B cannot clearly show the real size of the auxiliary area A41 . Therefore, FIG. 4B discloses the distribution, arrangement and shape of the auxiliary areas A41 on the display area 401 , but does not present the actual number of these auxiliary areas A41 and the actual size of each auxiliary area A41 . The actual size of the auxiliary area A41 is shown in subsequent FIG. 4C and FIG. 4D . In addition, in order to avoid confusion of the drawing and make it difficult to clearly present the moiré image 32 , FIG. 4B also does not draw the auxiliary area A32 in the moiré image 41 .

FIG. 4C is a partially enlarged schematic view of the dashed box 4C (on the left) in FIG. 4B. Please refer to FIG. 4B and FIG. 4C , which is different from the moiré reduction method of the display 300 mentioned above. When the display 400 executes step S103 in FIG. The auxiliary areas A32, wherein each auxiliary area A41 extends along the moiré image 41, and extends along the direction of the scan line 211 (horizontal direction). Therefore, the shape of the auxiliary area A41 is a horizontal rectangle, which is different from the shape of the auxiliary area A32.

In addition, after the display 400 generates regular lookup table data (step S102) and auxiliary lookup table data (step S104), these regular compensation points P21 of the regular lookup table data correspond to the four endpoints of the regular area 201r, and these auxiliary compensation points Points P22 correspond to these auxiliary areas A41, wherein each auxiliary compensation point P22 corresponds to an end point of one of the auxiliary areas A41. Taking FIG. 4C as an example, the four end points of some auxiliary area A41 correspond to four auxiliary compensation points P22, and the four end points of some auxiliary area A41 correspond to two auxiliary compensation points P22 and two normal compensation points P21. In other words, some auxiliary areas A41 are formed by four auxiliary compensation points P22, and some auxiliary areas A41 are formed by two auxiliary compensation points P22 and two regular compensation points P21.

FIG. 4D is a partially enlarged schematic diagram of FIG. 4C , wherein the area shown in FIG. 4D is surrounded by four adjacent regular compensation points P21 and a plurality of auxiliary compensation points P22 . Referring to FIG. 4C and FIG. 4D, each auxiliary area A41 includes a plurality of second pixels 202b, and these second pixels 202b of the same auxiliary area A41 are arranged in M×1 along the scanning line 211 (ie along the horizontal direction). array, where M is a positive integer. Taking FIG. 4D as an example, each auxiliary area A41 includes 8 second pixels 202b, and the 8 second pixels 202b of the same auxiliary area A41 are arranged in an 8×1 array along the horizontal direction.

Since the moiré image 41 is a vertical stripe, the gray scale value of the moiré image 41 in the horizontal direction (along the direction of the scan line 211) is relatively consistent, but the gray scale value in the vertical direction (along the direction of the data line 212) is relatively consistent. However, there is a large difference in the order value, resulting in a clear boundary between light and dark. However, since each auxiliary area A41 extends along the direction (horizontal direction) of the moiré image 41 and the scan line 211, the number of auxiliary compensation points P22 arranged along the direction (vertical direction) of the data line 212 is increased, and The distance between two adjacent auxiliary compensation points P22 in the vertical direction will also be reduced to reduce the error of the interpolation compensation operation in the vertical direction, thereby effectively reducing or eliminating the moiré image 41 .

FIG. 5A is a schematic top view of a display according to another embodiment of the present invention. Please refer to FIG. 5A , the display 500 in FIG. 5A is similar to the displays 200 , 300 and 400 in the foregoing embodiments, and may also include the storage device 220 and the timing controller 230 as shown in FIG. 2F . The display 500 also includes four pixel arrays 210 arranged in a 2×2 array, and these four pixel arrays 210 will form a display area 501 , wherein the four pixel arrays 210 can also be formed by splicing at least two sets of masks. For example, the pixel arrays 210 of the display 500 can be formed by splicing two or four sets of masks.

Like the displays 300 and 400 of the foregoing embodiments, in the display 500, the four pixel arrays 210 sometimes cause moiré images 50 to appear in the display area 501, wherein the moiré images 50 are distributed between two adjacent pixel arrays 210 The adjacent area (not marked) and the middle connecting area M5 between the four pixel arrays 210 . In addition, the moiré image 50 may also be distributed in an edge area (not shown) of the display area 501 . Specifically, the moiré image 50 may include horizontal stripes 51 , vertical stripes 52 and edge stripes 53 , wherein the horizontal stripes 51 and the vertical stripes 52 are interlaced. The edge stripes 53 are distributed in the edge area of the display area 501 and located at the edge of the display area 501 . In addition, in other embodiments, the moiré image 50 may be a combination of horizontal stripes 51 , vertical stripes 52 and edge stripes 53 . For example, the moiré image 50 may include horizontal stripes 51 and vertical stripes 52 but not edge stripes 53 . Alternatively, the moiré image 50 includes one of the horizontal stripes 51 and the vertical stripes 52 and the edge stripes 53 .

Basically, the horizontal stripes 51 are the same as the moiré image 41 in FIG. 4A , and the vertical stripes 52 are the same as the moiré image 32 in FIG. 3A . Edge fringe 53 is substantially the same as moiré image 20 in FIG. 2A. For example, the shape of the edge stripes 53 is substantially frame-shaped, and the edge stripes 53 include four long and narrow strip images (not shown), wherein two strip images extend along the direction of the scanning line 211 (horizontal direction), and the other Two striped images extend along the direction of the data line 212 (vertical direction). It can be seen that the moiré image 50 is essentially a combination of the moiré images 20 , 32 and 41 in the foregoing embodiments. In addition, the edge region (that is, the region where the edge stripes 53 are distributed) overlaps with the adjacent region (that is, the region where both the horizontal stripes 51 and the vertical stripes 52 are distributed) to form a plurality of overlapping regions I51 and I52, and the moiré image 50 also Distributed in these overlapping regions I51 and I52, wherein part of the horizontal stripes 51 are located in the overlapping region I51, and part of the vertical stripes 52 are located in the overlapping region I52.

FIG. 5B is a schematic top view of the display area divided into a plurality of normal areas and a plurality of auxiliary areas in FIG. 5A . Referring to FIG. 1 and FIG. 5B , the display 500 can also implement the moiré reduction method disclosed in FIG. 1 (including the step S105 disclosed in FIG. 2G ) to effectively reduce or eliminate the moiré image 50 . For example, the display 500 can also execute steps S101 and S103 in FIG. 1 to divide the display area 501 into a plurality of regular areas 201r, and divide the area where the moiré image 50 is distributed on the display area 501 into a plurality of auxiliary areas. Therefore, the display area 501 is divided into a plurality of regular areas 201r and a plurality of auxiliary areas, wherein the size of each auxiliary area is smaller than the size of each regular area 201r.

These auxiliary areas include a plurality of first areas, a plurality of second areas B51, B52, and a plurality of fine areas F5. These first regions are distributed in the above-mentioned edge regions and adjacent regions, but not distributed in the overlapping regions I51, I52 and the middle connecting region M5. Since the moiré image 50 is essentially a combination of the moiré images 20, 32 and 41 in the foregoing embodiments, these first regions may be a plurality of side length regions S21, S22, a plurality of corner regions C2 and a plurality of auxiliary regions A32 and A41, and the size of each first area is smaller than the size of each normal area 201r.

The side length areas S21 , S22 and the corner area C2 are all distributed in the edge area, but not in the overlapping areas I51 and I52 . Both the auxiliary areas A32 and A41 are distributed in the adjacent area, but not in the middle connecting area M5. The second regions B51 and B52 are respectively distributed in the overlapping regions I51 and I52, but not distributed in the intermediate connecting region M5, wherein the size of any one of the second regions B51 and B52 is smaller than the size of each first region. These fine areas F5 are only distributed in the intermediate connected area M5. Among these auxiliary areas, the fine area F5 has the smallest size, so the size of each fine area F5 will be smaller than the size of each first area (ie, any one of the side length areas S21, S22, corner area C2, auxiliary areas A32 and A41). , which is also smaller than the sizes of the respective second regions B51 and B52.

It should be noted that, similar to the situation in FIG. 3B and FIG. 4B mentioned above, FIG. 5B not only cannot clearly show the real sizes of both the auxiliary areas A32 and A41, but also cannot clearly show the second area which is smaller than the first area. The real size of B51, B52 and fine area F5. Therefore, FIG. 5B discloses the distribution, arrangement and shape of the auxiliary areas A32, A41, second areas B51, B52, and fine area F5 on the display area 301, but does not present the auxiliary areas A32, A41, second areas B51, B52. And the true size of the fine area F5. These regions whose true dimensions are not disclosed in FIG. 5B will be shown in subsequent FIGS. 5C-5E. In addition, in order to avoid confusion of the drawing and make it difficult to clearly present the moiré image 50 , FIG. 5B also does not draw the first region in the moiré image 41 .

5C is a partially enlarged schematic view of the overlapping area I52 in FIG. 5B , and FIG. 5D is a partially enlarged schematic view of the overlapping area I51 in FIG. 5B , wherein FIG. 5C and FIG. 5D also show some auxiliary areas A32 and A41 respectively. Referring to FIG. 5B to FIG. 5D , each first area (such as the auxiliary area A32 or A41 ), and each second area B51 and B52 include a plurality of second pixels 202b. The second pixels 202b in the same first region are arranged in an array, and the shape of the first region may be rectangular (but not square). For example, the shape of the auxiliary area A41 is a horizontal rectangle, and the shape of the auxiliary area A32 is a vertical rectangle.

Please refer to FIG. 5B and FIG. 5C, in the first regions (that is, the auxiliary region A32) arranged along the data line 212 (vertical direction) of the display 500, the second pixels 202b of the same auxiliary region A32 are along the The data lines 212 are arranged in a 1×N array, where N is a positive integer, and FIG. 5C uses N=8 as an example for illustration. Please refer to FIG. 5B and FIG. 5D , in the first regions (that is, the auxiliary region A41) arranged along the scanning line 211 (horizontal direction) of the display 500, the second pixels 202b of the same auxiliary region A41 are along the The scanning lines 211 are arranged in an M×1 array, where M is a positive integer, and FIG. 5D is illustrated with M=8 as an example.

The second pixels 202b of both the same second region B51 and the same second region B52 are arranged in an array, and in this embodiment, the shapes of both the second regions B51 and B52 can be rectangular, but not square . As shown in FIG. 5C, each second region B52 extends along the direction of the data line 212 (vertical direction), so the shape of each second region B52 is a vertical rectangle, wherein the first regions of the same second region B52 The two pixels 202b are arranged in a 1×X array along the data line 212, where X is a positive integer smaller than N, and FIG. 5C uses X=4 as an example for illustration. Similarly, as shown in FIG. 5D, each second region B51 extends along the direction of the scan line 211 (horizontal direction), so the shape of each second region B51 is a horizontally oriented rectangle, wherein the same second region B51 The second pixels 202b are arranged in a Y×1 array along the scan line 211, where Y is a positive integer smaller than M, and FIG. 5D is illustrated with Y=4.

Referring to FIG. 5C and FIG. 5D , each auxiliary compensation point P22 corresponds to an end point of one of the second regions B52 . Taking Fig. 5C as an example, the four end points of some second area B52 correspond to four auxiliary compensation points P22 respectively, while the four end points of some second area B52 correspond to two auxiliary compensation points P22 and two normal compensation points P21 . Therefore, some second regions B52 are formed by four auxiliary compensation points P22, and some second regions B52 are formed by two auxiliary compensation points P22 and two normal compensation points P21. Similarly, each auxiliary compensation point P22 corresponds to an end point of one of the second regions B51. Taking Figure 5D as an example, the four end points of some second area B51 correspond to four auxiliary compensation points P22 respectively, while the four end points of some second area B51 correspond to two auxiliary compensation points P22 and two regular compensation points P21 . Therefore, some second regions B51 are formed by four auxiliary compensation points P22, and some second regions B51 are formed by two auxiliary compensation points P22 and two regular compensation points P21.

FIG. 5E is a partially enlarged schematic view of the middle connecting area M5 in FIG. 5B . Referring to FIG. 5B and FIG. 5E , since the fine region F5 has the smallest size among the auxiliary regions, each fine region F5 includes the least number of second pixels 202b. Taking FIG. 5E as an example, each fine region F5 includes only one second pixel 202b, that is, the second pixels 202b of the same fine region F5 are arranged in a 1×1 array. Therefore, the size of each fine area F5 may be equal to the size of one pixel (ie, the second pixel 202b).

Since the moiré image 50 is substantially a combination of the moiré images 20, 32 and 41 in the foregoing embodiments, these first areas (ie, the side length areas S21, S22, the corner area C2 and the auxiliary areas A32 and A41) can reduce the Or eliminate part of the moire image 50, which is, for example, the part of the moiré image 50 distributed in the middle connecting region M5 and the regions other than the overlapping regions I51 and I52. Secondly, since the sizes of the second areas B51, B52 and the fine area F5 are smaller than the size of the first area, these auxiliary compensation points P22 will be more densely distributed in the overlapping areas I51, I52 and the intermediate connecting area M5, wherein the intermediate connecting area M5 It is the area with the highest distribution density of auxiliary compensation points P22. In this way, the interpolation and compensation calculation results obtained according to the second areas B51 , B52 and the fine area F5 will be quite accurate, thereby effectively reducing or eliminating the moiré image 20 .

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make some changes and modifications without departing from the concept and scope of the present invention. Therefore, the protection of the present invention The scope is to be determined as defined by the claims.

Claims (24)

1. A method for reducing moire is applied to a display, wherein the display comprises at least one pixel array, and the at least one pixel array forms a display area, and the method for reducing moire comprises the following steps:

detecting a moire image displayed in the display area, wherein the moire image is distributed at the edge of the at least one pixel array;

dividing the display area into a plurality of regular areas, wherein the regular areas cover the display area;

generating a regular lookup table data according to the regular regions;

dividing a region of the moire image distributed on the display region into a plurality of auxiliary regions, wherein the size of each regular region is larger than that of each auxiliary region;

generating auxiliary lookup table data according to the auxiliary areas; and

wherein the regular lookup table data comprises a plurality of regular compensation points, the auxiliary lookup table data comprises a plurality of auxiliary compensation points, the regular compensation points correspond to the regular regions, and the auxiliary compensation points correspond to the auxiliary regions,

rearranging the regular compensation points and the auxiliary compensation points to arrange at least one auxiliary compensation point between two adjacent regular compensation points; and

after rearranging the normal compensation points and the auxiliary compensation points, generating a plurality of gray scale compensation values respectively corresponding to the normal regions and the auxiliary regions according to the normal compensation points and the auxiliary compensation points.

2. The method according to claim 1, wherein the moire image and the auxiliary areas are distributed at an edge area of the display area.

3. The method of claim 2, wherein the edge region comprises at least one corner region and at least one side region, the at least one corner region is adjacent to the at least one side region, the auxiliary regions comprise a plurality of side regions and a plurality of corner regions, the side regions are distributed in the at least one side region, and the corner regions are distributed in the at least one corner region, each of the corner regions has a size smaller than that of each of the side regions.

4. The method of claim 1, wherein the display comprises two pixel arrays adjacent to each other, the pixel arrays forming the display region, the moire image and the auxiliary regions being distributed in an adjacent area between the two pixel arrays.

5. The method of claim 4, wherein the adjacent regions extend along a data line of the display, each of the normal regions comprises a plurality of first pixels, each of the auxiliary regions comprises a plurality of second pixels, and the second pixels of the same auxiliary region are arranged in a 1 XN array along the data line, wherein N is a positive integer.

6. The method of claim 4, wherein the adjacent regions extend along a scan line of the display, each of the normal regions comprises a plurality of first pixels, each of the auxiliary regions comprises a plurality of second pixels, and the second pixels of the same auxiliary region are arranged in an M x 1 array along the scan line, wherein M is a positive integer.

7. The method according to claim 4, wherein an edge region of the display region overlaps the adjacent region to form an overlapping region, the moire image is further distributed in the edge region and the overlapping region, the auxiliary regions include a plurality of first regions and a plurality of second regions, the first regions are distributed in the edge region and the adjacent region but not distributed in the overlapping region, and the second regions are distributed in the overlapping region, wherein the size of each second region is smaller than that of each first region.

8. The method of claim 1, wherein the display comprises four pixel arrays arranged in a 2 x 2 array, the pixel arrays form the display region, the moire image is distributed in a border region between two adjacent pixel arrays and an intermediate connecting region between the four pixel arrays, the auxiliary regions comprise a plurality of first regions and a plurality of fine regions, the first regions are distributed in the border region but not distributed in the intermediate connecting region, the fine regions are distributed in the intermediate connecting region, and the size of each fine region is smaller than that of each first region.

9. The method according to claim 8, wherein an edge region of the display region overlaps the adjacent region to form an overlapping region, the moire image is further distributed in the edge region and the overlapping region, the auxiliary regions further comprise a plurality of second regions, the first regions are further distributed in the edge region but not distributed in the overlapping region, and the second regions are distributed in the overlapping region, wherein the size of each second region is smaller than that of each first region, and the size of each fine region is smaller than that of each second region.

10. The method of claim 8, wherein the size of each fine region is equal to the size of one pixel.

11. The method of claim 8 or 10, wherein each of the regular regions comprises a plurality of first pixels, and each of the first regions comprises a plurality of second pixels;

in the first areas arranged along a data line of the display, the second pixels of the same first area are arranged into a 1 × N array along the data line, wherein N is a positive integer;

in the first areas arranged along a scanning line of the display, the second pixels of the same first area are arranged into an M × 1 array along the scanning line, wherein M is a positive integer.

12. The method of claim 1, wherein the regular compensation points correspond to four ends of the regular regions, and the generating the gray-scale compensation values comprises:

performing an interpolation compensation operation according to the normal compensation points and the auxiliary compensation points.

13. The method of claim 12, further comprising storing the normal lookup table data and the auxiliary lookup table data in a memory device.

14. The method of claim 13, wherein the memory device comprises a volatile memory and a non-volatile memory, and the normal lookup table data and the auxiliary lookup table data are stored in the non-volatile memory.

15. The method of claim 14, wherein the generating the gray level compensation values comprises:

loading the regular lookup table data and the auxiliary lookup table data from the non-volatile memory to the volatile memory;

a time schedule controller reads and processes the normal lookup table data and the auxiliary lookup table data from the volatile memory, wherein the time schedule controller rearranges the normal compensation points and the auxiliary compensation points and performs the interpolation compensation operation; and

the time schedule controller inputs the gray scale compensation values to the pixel array.

16. A display, comprising:

at least one pixel array forming a display area, wherein the display area is divided into a plurality of normal areas and a plurality of auxiliary areas, the normal areas cover the display area, the auxiliary areas are distributed at the edge of the at least one pixel array, and the size of each normal area is larger than that of each auxiliary area;

the storage device stores regular lookup table data and auxiliary lookup table data, wherein the regular lookup table data comprises a plurality of regular compensation points, the auxiliary lookup table data comprises a plurality of auxiliary compensation points, the regular compensation points correspond to the regular areas, and the auxiliary compensation points correspond to the auxiliary areas; and

a timing controller electrically connected to the at least one pixel array and the memory device, and reading the normal lookup table data and the auxiliary lookup table data from the memory device, wherein the timing controller rearranges the normal compensation points and the auxiliary compensation points to set at least one auxiliary compensation point between two adjacent normal compensation points; the timing controller generates a plurality of gray scale compensation values corresponding to the normal regions and the auxiliary regions respectively according to the normal compensation points and the auxiliary compensation points after rearranging the normal compensation points and the auxiliary compensation points.

17. The display of claim 16, wherein the storage device comprises:

the nonvolatile memory is electrically connected with the time schedule controller and stores the normal lookup table data and the auxiliary lookup table data; and

and the time schedule controller reads and processes the normal lookup table data and the auxiliary lookup table data from the volatile memory and inputs the gray scale compensation values into the pixel array.

18. The display of claim 16, wherein the auxiliary areas are distributed in an edge area of the display area, the edge area comprising at least one corner area and at least one side area, the at least one corner area being adjacent to the at least one side area, the auxiliary areas comprising a plurality of side areas and a plurality of corner areas, wherein the side areas are distributed in the at least one side area, and the corner areas are distributed in the at least one corner area, and each of the corner areas has a size smaller than each of the side areas.

19. The display of claim 16, comprising two of the pixel arrays adjacent to each other, the pixel arrays forming the display region, the auxiliary regions being distributed in an adjacent region between the two pixel arrays.

20. The display of claim 19, wherein each of the pixel arrays comprises a plurality of data lines, the adjacent region extends along a direction of one of the data lines, each of the normal regions comprises a plurality of first pixels, each of the auxiliary regions comprises a plurality of second pixels, and the second pixels of the same auxiliary region are arranged in a 1 x N array along the data line, where N is a positive integer.

21. The display of claim 19, wherein each pixel array comprises a plurality of scan lines, the adjacent region extends along a direction of one of the scan lines, each normal region comprises a plurality of first pixels, each auxiliary region comprises a plurality of second pixels, and the second pixels of the same auxiliary region are arranged in an mx 1 array along the scan line, wherein M is a positive integer.

22. The display of claim 16, comprising four of the pixel arrays arranged in a 2 x 2 array, wherein the pixel arrays form the display region, and the auxiliary regions comprise a plurality of first regions and a plurality of fine regions, wherein the first regions are distributed in a neighboring region between two adjacent pixel arrays but not in an intermediate connecting region between four of the pixel arrays, and the fine regions are distributed in the intermediate connecting region, and wherein the size of each fine region is smaller than that of each first region.

23. The display of claim 22, wherein an edge region of the display area overlaps the adjacent region to form an overlapping region, the auxiliary regions further comprise a plurality of second regions, the first regions are further distributed in the edge region but not in the overlapping region, and the second regions are distributed in the overlapping region, wherein each of the second regions has a size smaller than that of each of the first regions, and each of the fine regions has a size smaller than that of each of the second regions.

24. The display according to claim 22 or 23, wherein each of the pixel arrays comprises a plurality of scan lines and a plurality of data lines, wherein each of the normal regions comprises a plurality of first pixels, and each of the first regions comprises a plurality of second pixels, each of the fine regions has a size equal to a size of one of the second pixels;

in the first areas arranged along one of the data lines, the second pixel arrangements of the same first area are arranged into a 1 × N array along the data line, wherein N is a positive integer;

in the first regions arranged along one of the scanning lines, the second pixels of the same first region are arranged in an M × 1 array along the scanning line, wherein M is a positive integer.

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