CN101510397A - Display method for reducing color separation of liquid crystal display - Google Patents

Abstract

The invention relates to a display method for reducing color separation of a liquid crystal display, which comprises the following steps: the control signal of each sub-picture is generated and comprises a plurality of second backlight control signals, a plurality of second liquid crystal control signals and a third liquid crystal control signal, and the sub-pictures are sequentially displayed. The invention generates a second backlight control signal and a second liquid crystal control signal of each display area in each sub-picture according to the brightness degree of the picture to be displayed, sequentially displays a colorful sub-picture and a plurality of single-color photon pictures according to the second backlight control signal and the second liquid crystal control signal, and forms the picture to be displayed through the visual action of human eyes. By implementing the invention, not only the phenomenon of Color Break Up (CBU) generated by the liquid crystal display can be reduced, but also the liquid crystal display with high contrast, high Color saturation, low power consumption and low manufacturing cost can be achieved.

Description

Display Method for Reducing Color Separation of Liquid Crystal Display

technical field

The present invention relates to a display method for reducing color separation, in particular to a liquid crystal display, which can reduce the color separation phenomenon by reducing the contribution of each color photon picture to the displayed picture, and by adjusting each sub-picture The size of the backlight signal in different display areas can further improve the contrast ratio of the liquid crystal display, and can reduce the power consumption and reduce the color separation of the liquid crystal display.

Background technique

In recent years, with the gradual development of the flat-panel display industry, the display technology has also been continuously updated and improved. Liquid Crystal Display (LCD) with small size, light weight and low electromagnetic radiation has become the mainstream product of the display.

However, because of the liquid crystal display using spatial color filter (Spatial Color Filter, SCF) technology in the past, each pixel in the liquid crystal module (a pixel is a pixel, hereinafter referred to as a pixel) is composed of three sub-pixels, and Each sub-pixel is controlled by a field effect transistor (Field Effect Transistor, TFT; a transistor is a transistor, hereinafter referred to as a transistor) to control its electric field strength. Because at least three field effect transistors are used for each pixel, and color filters are also required, which not only consumes raw material costs, but also increases the complexity of manufacturing liquid crystal displays and greatly reduces light efficiency. Therefore, the industry has developed a field sequential color (Field Sequential Color, FSC) display technology, which uses the three primary color light sources to switch in time sequence, and synchronously controls the transmittance of liquid crystal pixels to adjust the relative light intensity of each color light source, and then The integral action of the visual system on light stimulation is used to form and obtain the color to be displayed.

The field color sequential display technology can achieve color display without the use of color filters, and each pixel does not need to be divided into sub-pixels, which can also reduce the field effect transistors required in a single pixel, thereby saving raw material costs and more The manufacturing procedures can be simplified. Under ideal imaging conditions, the three primary colors contained in a single color image should be projected to the position corresponding to each pixel on the retina of the human eye, and the color information of each pixel can be completely reproduced visually, but if the color image contains The color fields of the three primary colors of the image, the corresponding pixels are projected to different positions on the retina, and then perceived by the visual system, the observer will see the picture of the separation and dislocation of the color fields, which is called the color separation phenomenon. Because the color separation phenomenon will greatly reduce the display quality, the color separation phenomenon is an important problem that must be improved in the field color sequential display technology.

At present, the phenomenon of color separation can be solved by inserting a monochromatic picture. For example, US Patent No. 7,057,668 discloses using red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes as backlight sources. When an image signal (signal That is, the signal (hereinafter referred to as the signal) is input, and the input image signal is converted into the YCrCb color system. When the color separation of the displayed content is slight, the field color sequential display technology is used to display the picture, but if the color separation of the displayed content is serious, another monochrome picture is inserted, and the red light-emitting diode and the green light are turned on at the same time. Light-emitting diodes and blue light-emitting diodes change the backlight to display full-bright white light, so that the colored stripes generated by the color separation phenomenon can be mixed with the inserted monochrome picture, thereby reducing the chance of the color separation phenomenon being detected by the visual system.

Although the above method can solve the phenomenon of partial color separation, when viewing the liquid crystal display using the field color sequential display technology in the forward direction, because the liquid crystal will still have light leakage in the forward direction, and then reduce the contrast of the liquid crystal display, so How to effectively solve the color separation phenomenon and at the same time improve the contrast of the liquid crystal display has become the main research and development direction at present.

It can be seen that the above-mentioned existing liquid crystal display color separation display method obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. urgent problem to be solved. Therefore, how to create a new display method for reducing the color separation of liquid crystal displays is one of the current important research and development topics, and has also become a goal that the industry needs to improve.

In view of the defects in the above-mentioned existing liquid crystal display color separation display methods, the inventors actively research and innovate based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of academic theories, in order to create a A new display method for reducing the color separation of liquid crystal displays can improve the general existing display methods for color separation of liquid crystal displays, making it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects of the existing liquid crystal display color separation display method, and provide a new display method that reduces the liquid crystal display color separation. The technical problem to be solved is to make it by combining high dynamic contrast Display technology and field color sequential display technology can reduce the color separation phenomenon of liquid crystal display, and can make liquid crystal display have the advantages of high contrast, low power consumption, high color saturation and low manufacturing cost at the same time, which is very suitable for practical use .

Another object of the present invention is to provide a new display method for reducing the color separation of liquid crystal displays. The technical problem to be solved is to make it generate each display in each sub-screen according to the brightness and darkness of the screen to be displayed. The second backlight control signal and the second liquid crystal control signal of the area, and then display the multi-color sub-picture composed of two-color photon pictures according to the second backlight control signal and the second liquid crystal control signal, and display each color photon picture in sequence, which can The color separation phenomenon of the liquid crystal display is reduced, so that it is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to a display method for reducing the color separation of liquid crystal displays proposed by the present invention, it includes the following steps: generating a control signal for each sub-picture, and the control signal includes a plurality (a plurality is plural, hereinafter referred to as a plurality) ) a second backlight control signal, a plurality of second liquid crystal control signals and a third liquid crystal control signal, and the method for generating the control signal includes the following steps: analyzing an input image signal to obtain each color light in each pixel A first liquid crystal control signal and a first backlight control signal; divide the sub-screen into a plurality of display areas; generate the second backlight control signal for each color light in each display area, which is through the first generating a liquid crystal control signal; generating the second liquid crystal control signal for each color light in each pixel in each display area, which is generated according to the second backlight control signal; and generating the second liquid crystal control signal for each display area The third liquid crystal control signal; and displaying these sub-pictures in sequence, it includes the following steps: displaying a multi-color sub-picture, which is to cooperate with the second backlight control signal of each color light in each display area at the same time The third liquid crystal control signal display; and sequentially display each color sub-picture, each of the color sub-pictures is based on the second backlight control signal of the color light in each display area to cooperate with the color light in the second backlight control signal of each of the pixels An operation result of the second liquid crystal control signal and the third liquid crystal control signal is displayed.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned display method for reducing color separation of a liquid crystal display, the color lights are a red light, a green light, and a blue light.

In the aforementioned display method for reducing color separation of a liquid crystal display, the second backlight control signal of each color light in each of the display regions is the maximum value of the first liquid crystal control signals.

In the aforementioned display method for reducing color separation of a liquid crystal display, wherein the second backlight control signal of each color light in each of the display regions is an average value of the first liquid crystal control signals.

The aforementioned display method for reducing color separation of a liquid crystal display, wherein the second backlight control signal of each color light in each of the display areas is the average value of the first liquid crystal control signals divided by the backlight control Take a total order value of the signal, take the square root of it, and multiply by the total order value.

The aforementioned display method for reducing the color separation of liquid crystal displays, wherein the second liquid crystal control signal of each color light in each of the pixels in each of the display areas is calculated according to the following equation: GL _HDR = (BL _Full /BL _HDR ) ^1/r *GL _Full ; wherein, GL _HDR is the second liquid crystal control signal, BL _Full is the first backlight control signal, BL _HDR is the second backlight control signal, r is a gamma factor, And GL _Full is the first liquid crystal control signal.

In the aforementioned display method for reducing color separation of a liquid crystal display, the third liquid crystal control signal is the minimum value among the second liquid crystal control signals.

In the aforementioned display method for reducing color separation of a liquid crystal display, the third liquid crystal control signal is less than or equal to the minimum value of the second liquid crystal control signals.

In the aforementioned display method for reducing color separation of a liquid crystal display, the calculation result is the difference between the second liquid crystal control signal and the third liquid crystal control signal.

The purpose of the present invention and the solution to its technical problem also adopt the following technical solutions to achieve. According to a display method for reducing the color separation of liquid crystal displays proposed by the present invention, it includes the following steps: generating a control signal for each sub-picture, the control signal includes a plurality of second backlight control signals, a plurality of second liquid crystal control signals and a third liquid crystal control signal, and the method for generating the control signal includes the following steps: analyzing an input image signal to obtain a first liquid crystal control signal and a first backlight control signal for each color light in each pixel; Divide the sub-screen into a plurality of display areas; generate the second backlight control signal for each color light in each display area, which is generated by the first liquid crystal control signals; generate each display area for each The second liquid crystal control signal of the color light in each pixel is generated according to the second backlight control signal; and the third liquid crystal control signal of each display area is generated; and the sub-pictures are displayed in sequence , which includes the following steps: displaying a multi-color sub-picture, which selects a first color light and a second color light from the color lights, and then uses the second backlight control signal of the first color light and the second backlight control signal The second backlight control signal of the two-color light cooperates with the third liquid crystal control signal to display; display a sub-picture of the first color light, which is based on the second backlight control signal of the first color light and cooperates with the first color light in each An operation result of the second liquid crystal control signal and the third liquid crystal control signal of the pixel is displayed; a sub-picture of a second color light is displayed, which is based on the second backlight control signal of the second color light to cooperate with the second color light in the second color light. displaying the operation result of the second liquid crystal control signal and the third liquid crystal control signal of each pixel; and displaying a third color sub-picture, which is based on the second backlight control signal of a third color light in conjunction with the first backlight control signal The three-color light is displayed by the second liquid crystal control signal of each pixel.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned display method for reducing color separation of a liquid crystal display, the color lights are a red light, a green light, and a blue light.

In the aforementioned display method for reducing color separation of a liquid crystal display, the second backlight control signal of each color light in each of the display regions is the maximum value of the first liquid crystal control signals.

In the aforementioned display method for reducing color separation of a liquid crystal display, wherein the second backlight control signal of each color light in each of the display regions is an average value of the first liquid crystal control signals.

The aforementioned display method for reducing color separation of a liquid crystal display, wherein the second backlight control signal of each color light in each of the display areas is the average value of the first liquid crystal control signals divided by the backlight control Take a total order value of the signal, take the square root of it, and multiply by the total order value.

The aforementioned display method for reducing the color separation of liquid crystal displays, wherein the second liquid crystal control signal of each color light in each of the pixels in each of the display areas is calculated according to the following equation: GL _HDR = (BL _Full /BL _HDR ) ^1/r *GL _Full ; wherein, GL _HDR is the second liquid crystal control signal, BL _Full is the first backlight control signal, BL _HDR is the second backlight control signal, r is a gamma factor, And GL _Full is the first liquid crystal control signal.

In the aforementioned display method for reducing color separation of a liquid crystal display, the third liquid crystal control signal is the minimum value among the second liquid crystal control signals of the first color light and the second color light.

In the aforementioned display method for reducing color separation of a liquid crystal display, the third liquid crystal control signal is less than or equal to the minimum value among the second liquid crystal control signals of the first color light and the second color light.

In the aforementioned display method for reducing color separation of a liquid crystal display, the calculation result is the difference between the second liquid crystal control signal and the third liquid crystal control signal.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from above technical scheme, main technical content of the present invention is as follows:

In order to achieve the above object, the present invention provides a display method for reducing the color separation of liquid crystal displays, which includes the following steps: generating a control signal for each sub-picture, the control signal includes a plurality of second backlight control signals and a plurality of second backlight control signals. The liquid crystal control signal, and the method for generating the control signal include the following steps: analyzing an input video signal to obtain a first liquid crystal control signal and a first backlight control signal for each color light in each pixel; a display area; generate a second backlight control signal for each color light in each display area, which is generated by some first liquid crystal control signals; generate a second liquid crystal control signal for each color light in each pixel in each display area signal, which is generated according to the second backlight control signal; and generates a third liquid crystal control signal for each display area; and sequentially displaying some sub-pictures, which includes the following steps: displaying a colorful sub-picture, which is simultaneously based on The second backlight control signal of each color light in each display area cooperates with the third liquid crystal control signal to display; and each color photo sub-picture is displayed in sequence, and each color photo sub-picture is coordinated according to the second backlight control signal of each color light in each display area The color light is displayed on an operation result of the second liquid crystal control signal and the third liquid crystal control signal of each pixel.

In addition, in order to achieve the above object, the present invention provides a display method for reducing the color separation of liquid crystal displays, which includes the following steps: generating a control signal for each sub-picture, the control signal includes a plurality of second backlight control signals and a plurality of The method for generating the second liquid crystal control signal and the control signal includes the following steps: analyzing an input video signal to obtain a first liquid crystal control signal and a first backlight control signal for each color light in each pixel; dividing the sub-picture It is a plurality of display areas; generate the second backlight control signal of each color light in each display area, which is generated by some first liquid crystal control signals; generate the second backlight control signal of each color light in each display area in each pixel Liquid crystal control signal, it is to produce according to the second backlight control signal; And produce a third liquid crystal control signal of each display area; And display some sub-pictures in sequence, it comprises the following steps: display a colorful sub-picture, it is Select a first color light and a second color light from these color lights, and then use the second backlight control signal of the first color light and the second backlight control signal of the second color light to cooperate with the third liquid crystal control signal to display; display a first color light One-color photon picture, which is displayed according to the second backlight control signal of the first color light and the operation result of the second liquid crystal control signal and the third liquid crystal control signal of each pixel of the first color light; displaying a second color The photon picture is displayed according to the operation result of the second backlight control signal of the second color light and the second liquid crystal control signal and the third liquid crystal control signal of each pixel of the second color light; and a third color photon picture is displayed, which It is based on the second backlight control signal of a third color light and the second liquid crystal control signal of each pixel to display the third color light.

By virtue of the above technical solution, the display method for reducing the color separation of liquid crystal displays in the present invention has at least the following advantages and beneficial effects:

1. The present invention can reduce the occurrence of color separation by reducing the contribution of each color photon picture to the displayed picture.

2. The present invention can improve the contrast of the liquid crystal display and reduce power consumption by adjusting the backlight signal size of different display areas in each sub-screen.

3. The present invention generates the second backlight control signal and the second liquid crystal control signal for each display area in each sub-screen according to the brightness and darkness of the screen to be displayed by combining the high dynamic contrast display technology and the field color sequential display technology. signal, and then according to the second backlight control signal and the second liquid crystal control signal, the multi-color sub-pictures composed of photon pictures of each color are displayed, and the photon pictures of each color are displayed in sequence, thereby reducing the color separation phenomenon of the liquid crystal display, and can The liquid crystal display has the advantages of high contrast, low power consumption, high color saturation, and low manufacturing cost at the same time, and is very suitable for practical use.

4. The present invention generates the second backlight control signal and the second liquid crystal control signal of each display area in each sub-screen according to the brightness and darkness of the screen to be displayed, and then according to the second backlight control signal and the second liquid crystal The control signal displays multi-colored sub-pictures composed of two-color photon pictures, and sequentially displays each color photon picture, which can reduce the phenomenon of color separation of the liquid crystal display, and thus is more suitable for practical use.

To sum up, the present invention relates to a display method for reducing color separation of a liquid crystal display, which includes the following steps: generating a control signal for each sub-picture; and displaying the sub-pictures sequentially. The present invention generates the second backlight control signal and the second liquid crystal control signal for each display area in each sub-picture according to the brightness and darkness of the picture to be displayed, and then according to the second backlight control signal and the second liquid crystal control signal The multi-color sub-picture and multiple monochromatic photon pictures are sequentially displayed, and the picture to be displayed is formed through the visual effect of human eyes. Through the implementation of the present invention, not only can the color break up (CBU) phenomenon of the liquid crystal display be reduced, but also a liquid crystal display with high contrast, high color saturation, low power consumption and low manufacturing cost can be achieved. The present invention has the above-mentioned many advantages and practical value, it has great improvement no matter in display method or function, has remarkable progress in technology, and has produced easy-to-use and practical effect, and compared with existing liquid crystal display color separation The display method of the present invention has enhanced outstanding functions, thereby being more suitable for practical use, and is a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a flow chart of a preferred embodiment of a display method for reducing color separation of a liquid crystal display according to the present invention.

FIG. 2 is a flow chart of an embodiment of the present invention for generating a control signal for each sub-picture.

FIG. 3 is a schematic diagram of an embodiment of a color image to be displayed.

FIG. 4A is a flowchart 1 of an embodiment of displaying each sub-picture in the present invention.

FIG. 4B is a timing diagram 1 of an embodiment of displaying each sub-picture according to the present invention.

FIG. 5A is a second flow chart of displaying each sub-picture in the present invention.

FIG. 5B is a second timing diagram for displaying each sub-picture in the present invention.

FIG. 6A is a flow chart of generating a control signal for a certain display area in FIG. 3 .

FIG. 6B is a flow chart of sequentially displaying sub-pictures according to the control signal generated in FIG. 6A .

S100: Display method for reducing color separation of liquid crystal display

S110: Generate a control signal for each sub-picture

S111: Analyze the input image signal

S112: Divide the sub-picture into multiple display areas

S113: Generate a second backlight control signal for each color light in each display area

S114: Generate a second liquid crystal control signal for each color light in each display area

S115: Generate a third liquid crystal control signal for each display area

S120, S120': display sub-pictures sequentially

S121, S121': Display colorful sub-pictures

S122: displaying each photon picture in sequence

S123: displaying the photon picture of the first color

S124: displaying the photon picture of the second color

S125: displaying the photon picture of the third color

12: The first LCD control signal

11: The first backlight control signal

21: Second backlight control signal

22: Second LCD control signal

23: The third liquid crystal control signal

24: Operation result

Detailed ways

In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, features and details of the display method for reducing the color separation of liquid crystal displays proposed according to the present invention will be described. Its effect is described in detail below.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation mode, when the technical means and functions adopted by the present invention to achieve the predetermined purpose can be obtained a deeper and more specific understanding, but the accompanying drawings are only for reference and description, and are not used to explain the present invention be restricted.

Please refer to FIG. 1 , which is a flow chart of a preferred embodiment of a display method S100 for reducing color separation of a liquid crystal display according to the present invention. A display method S100 for reducing color separation of a liquid crystal display according to a preferred embodiment of the present invention includes the following steps: generating a control signal S110 for each sub-picture, and displaying the sub-pictures S120 sequentially.

The control signal of each sub-picture includes a plurality of second backlight control signals, a plurality of second liquid crystal control signals and a third liquid crystal control signal, the second backlight control signal is used to control the backlight brightness of the backlight module, and the second The liquid crystal control signal is used to control the transmittance of the liquid crystal. The larger the second liquid crystal control signal, the higher the transmittance of the liquid crystal, that is to say, the brighter the brightness of the screen. The scale value and the gray scale value of the liquid crystal represent the magnitudes of the second backlight control signal and the second liquid crystal control signal.

Please refer to FIG. 2 , which is a flowchart of an embodiment of the present invention for generating a control signal S110 for each sub-picture. The above-mentioned method for generating the control signal S110 of each sub-picture includes the following steps: analyzing the input image signal S111; dividing the sub-picture into multiple (plural) display areas S112; generating the second color light of each color light in each display area. A backlight control signal S113; a second liquid crystal control signal S114 for each pixel of each color light in each display area; and a third liquid crystal control signal S115 for each display area.

The analyzed input image signal S111, please refer to FIG. 3, which is a schematic diagram of an embodiment of a color image to be displayed. If FIG. 3 is a color image to be displayed, the input image signal includes the first backlight control signal and the first LCD control signal and other information. For example, if the brightness of the backlight is full brightness, that is to say, the first backlight control signal is the maximum value of the grayscale value of the backlight brightness. For example, if an 8-bit control signal is used, the first backlight control signal is 255 .

When the backlight is fully bright, the liquid crystal display needs to use the first liquid crystal control signal to control the transmittance of the liquid crystal in each pixel, so that the displayed color can be divided into light and dark. Therefore, by analyzing the input image signal, The first liquid crystal control signal and the first backlight control signal of each color light in each pixel are respectively obtained.

The sub-picture is divided into multiple display areas S112. Since the color image may have some brighter pictures and some darker pictures, the sub-picture can be divided into a plurality of display areas, according to the brightness and darkness of each display area. , respectively control the backlight brightness of each display area. For example, as shown in Figure 3, the sub-picture can be divided into 4 x 4 display areas.

The second backlight control signal S113 for each color light in each display area is generated. In each display area, a value is generated from the first liquid crystal control signal of each color light as the second backlight control signal. The user can Choose according to its needs, for example, you can choose the maximum value and average value of the first liquid crystal control signal, or divide the average value of the first liquid crystal control signal by the total order value of the control signal, and take the square root of it, so that It is normalized and then multiplied by the total order value as the second backlight control signal.

For example, if the maximum value of the first liquid crystal control signal in the display area is selected as the second backlight control signal, for example, the maximum value of the first liquid crystal control signal in the display area is 95, then the second backlight control signal is also 95. Because the pixel with the maximum value of the first liquid crystal control signal also represents the brightest pixel in the display area, if the brightness of the backlight can be directly adjusted to the brightest brightness in the display area, the consumption of the backlight module can also be reduced. power.

That is to say, by adjusting the backlight of each display area, a weaker backlight is directly used in an originally darker display area, or even the backlight of the display area is turned off, and a brighter backlight is used in a brighter display area, and Then, the transmittance of the liquid crystal is changed by the second liquid crystal control signal to achieve the color image to be displayed, thereby achieving the goal of low power consumption and improving the contrast ratio of the picture.

The generation of the second liquid crystal control signal S114 of each color light in each pixel in each display area, because the color image finally displayed needs to be equal to the light intensity of the color image generated according to the input image signal, so it can be based on the known first The second backlight control signal generates the second liquid crystal control signal, and the second liquid crystal control signal can be calculated according to the following equation:

GL _HDR ＝GL _Full ×(BL _Full /BL _HDR ) ^1/r ---(1)

Wherein GL _HDR is the second liquid crystal control signal, BL _Full is the first backlight control signal, BL _HDR is the second backlight control signal, r is a gamma factor, and GL _Full is the first liquid crystal control signal.

In addition, since the backlight sources of each display area may affect each other, it is also possible to change BL _Full in formula (1) into the light intensity value of the first backlight control signal, and BL _HDR into the light intensity value of the second backlight control signal. light intensity value, so that a more accurate and proper second liquid crystal control signal can be obtained.

This generates a third liquid crystal control signal S115 for each display area. The third liquid crystal control signal is generated from all the second liquid crystal control signals of each color light. The third liquid crystal control signal can be less than or equal to all the second liquid crystal control signals of each color light. The minimum value of the second LCD control signal.

Please refer to FIG. 4A , which is a flowchart 1 of an embodiment of displaying each sub-screen S120 of the present invention. As shown in FIG. 4A , displaying the sub-pictures S120 sequentially includes the following steps: displaying the multi-color sub-pictures S121 , and sequentially displaying the sub-pictures of each color S122 .

The multi-color sub-picture S121 is shown in FIG. 4B , which is a timing diagram 1 of an embodiment of displaying each sub-picture S120 of the present invention. As shown in FIG. 4B , the multi-color sub-picture is formed by simultaneously displaying each color sub-picture, which is simultaneously displayed according to the second backlight control signal of each color light in each display area and the third liquid crystal control signal. The colorful sub-picture can be a picture composed of three colors of light, red light, green light and blue light, and the brightness of the backlight of each color light is controlled separately by the second backlight control signal of each color light, and is matched with the third liquid crystal The control signal controls the transmittance of the liquid crystal.

The sub-pictures of each color are displayed sequentially S122, and each sub-picture of each color is based on an operation result of the second backlight control signal of the color and the second liquid crystal control signal and the third liquid crystal control signal of each pixel in each display area Display, wherein the calculation result can be the difference between the second liquid crystal control signal and the third liquid crystal control signal, but the method of generating the calculation result is not limited to this, and the user can adjust it according to the picture quality he wants to display.

As shown in FIG. 4B, each color image can form a complete color image through the visual function of the human eye by completing the display of the multi-color sub-picture and each color sub-picture in a time period T. A color image can form a complete color image through the visual function of the human eye by displaying multi-color sub-pictures and photon sub-pictures of each color in a time period T, and the display of multi-color sub-pictures can be, for example, as shown in FIG. 4B It is shown that the red photon picture, the green photon picture and the blue photon picture are displayed simultaneously, and the collocation of the second backlight control signal and the second liquid crystal control signal of each color photon picture is as described above.

In addition, the colorful sprites in this embodiment can also display only two of the three primary colors at the same time. Please refer to FIG. 5A , which is a second flow chart of displaying each sprite S120' of the present invention. Another method for sequentially displaying the sub-pictures S120' in this embodiment includes the following steps: displaying the multi-color sub-picture S121', displaying the first-color sub-picture S123, displaying the second-color sub-picture S124, and displaying the third-color sub-picture Screen S125; where:

The display of the multi-color sub-picture S121', please refer to FIG. 5B, is a second timing diagram of displaying each sub-picture S120' of the present invention. A first color light and a second color light can be selected from three different color lights, and then the second backlight control signal of the first color light and the second backlight control signal of the second color light cooperate with the third liquid crystal control signal to display multi-color sub-colors. In the picture, the first color light and the second color light can be selected from the group consisting of red light, green light and blue light, and the third liquid crystal control signal can be less than or equal to the second liquid crystal control signal of the first color light and the second color light The minimum value in . For example, if the first color light is red light and the second color light is green light, so the multi-color sub-picture is actually a yellow (yellow) photo sub-picture, which is based on the second backlight control signal of red light and the first backlight control signal of green light. The second backlight control signal cooperates with the third liquid crystal control signal for display.

The sub-picture S123 for displaying the first color light is based on the second backlight control signal of the first color light and the calculation result of the second liquid crystal control signal and the third liquid crystal control signal of each pixel of the first color light. It can be the difference between the second liquid crystal control signal and the third liquid crystal control signal, but the method for generating the calculation result is not limited to this, and the user can adjust it according to the picture quality he wants to display. Since the colorful sub-picture has displayed part of the first color light, the second liquid crystal control signal needs to be calculated with the third liquid crystal control signal, and then the second backlight control signal is combined with the calculation result of the liquid crystal control signal to display the first color sub-picture.

The sub-picture S124 for displaying the second color light is based on the second backlight control signal of the second color light and the calculation result of the second liquid crystal control signal and the third liquid crystal control signal of each pixel of the second color light, wherein the calculation result can be: The difference between the second liquid crystal control signal and the third liquid crystal control signal. Similarly, because the colorful sub-picture has already displayed part of the second color light, the second liquid crystal control signal needs to be calculated with the third liquid crystal control signal, and then the second backlight control signal is combined with the calculation result of the liquid crystal control signal to display the second color sub-picture .

The sub-picture S125 for displaying the third color light is displayed according to the second backlight control signal of the third color light and the second liquid crystal control signal of each pixel of the third color light. Because the multi-color sub-picture does not display the third color light, the second liquid crystal control signal can be directly displayed in cooperation with the second backlight control signal of the third color light without further calculation with the third liquid crystal control signal.

Please refer to FIG. 5B , the colorful sub-picture can be changed into a yellow (yellow) photon picture by displaying red light and green light, or can be changed into a cyan (cyan) photon picture by displaying green light and blue light ( Not shown in the figure), or display red light and green light to change into a magenta (magenta) photon screen (not shown), and then display the first, second, and third color photon screens in sequence, and the color photon screens display The order is not limited.

Since the colorful sub-pictures have already displayed part of the colors, the lack of colors in the colorful sub-pictures can be supplemented by sequentially displaying each color sub-picture, and because one more colorful sub-picture is inserted, the display time of each color photon picture can also be shortened. It is relatively shortened, and can reduce the original contribution of each color light to the image, thereby reducing the occurrence of color separation.

In order to understand the content of this embodiment more clearly, the method flow of this embodiment is specifically described below with an example. Please refer to Fig. 6A, which is a flowchart of a control signal generated by a certain display area in Fig. 3, which is to illustrate that a certain display area in Fig. 4 generates the second backlight control signal 21, the second liquid crystal control signal 22 and the third liquid crystal Flow S120 of the control signal 23 .

Please refer to FIG. 6A , by analyzing the input image signal S111 , the first backlight control signal 11 of each color light and the first liquid crystal control signal 12 of each pixel can be obtained. It can be seen from FIG. 6A that the first backlight control signal 11 for red light is 255, the first liquid crystal control signal 12 is 250, 248, 246, 264...etc., the first backlight control signal for green light The control signal 11 is 255, the first liquid crystal control signal 12 is 196, 195, 194, 194...etc., while the first backlight control signal 11 of blue light is 255, the first liquid crystal control signal 12 is 92, 93, 93, 95...etc.

The second backlight control signal S113 is generated according to the first liquid crystal control signal of each color light, for example, the maximum value of the first liquid crystal control signal 12 is used as the second backlight control signal 21 of each color light, so in this display area , the second backlight control signal 21 for red light is 250, the second backlight control signal 21 for green light is 196, and the second backlight control signal 21 for blue light is 95.

Next, generate a second liquid crystal control signal S114 for each color light. Since the final displayed color image needs to have the same light intensity as the color image generated according to the input image signal, the second liquid crystal control signal 22 for each pixel can be generated according to the formula (1). If the gamma factor in the first formula (1) is 2, after calculation, the second liquid crystal control signal 22 of red light is 252, 250, 248, 248...etc., the second liquid crystal of green light The control signals 22 are 244, 222, 221, 221, .

Finally, a third liquid crystal control signal S115 is generated. Suppose the minimum value of the second liquid crystal control signal 22 of red light, green light and blue light is set as the third liquid crystal control signal 23, so the third liquid crystal control signal 23 is 113, but the user can also display the screen according to the desired value. A value smaller than the minimum value of the second liquid crystal control signal 22 is selected as the third liquid crystal control signal 23 .

Please refer to FIG. 6B , which is a flow chart of sequentially displaying sub-pictures according to the control signal generated in FIG. 6A . As shown in FIG. 6B , the sub-pictures S120 are displayed sequentially according to the control signal of each color light. Respectively according to the second backlight control signal 21 of red light, green light and blue light, and at the same time cooperate with the third liquid crystal control signal 23 to display the colorful sub-picture S121, because the third liquid crystal control signal 23 is the signal of red light, green light and blue light The minimum value in the second liquid crystal control signal 22, so the multi-color sub-picture shows part of the color image to be displayed.

Next, each color photon frame is sequentially displayed S122, and the red photon frame, the green photon frame, and the blue photon frame are sequentially displayed, but the display order of the color photon frames is not limited. In the sequence shown in FIG. 6B , the first color photon frame is a red photon frame, the second color photon frame is a green photon frame, and the third color photon frame is a blue photon frame.

For example, the second backlight control signal 21 of the red photon screen is 250, which is combined with the operation result 24 of the second liquid crystal control signal 22 and the third liquid crystal control signal 23, such as 139, 137, 135, 135... etc. to display the red photon picture; similarly, the second backlight control signal 21 of the green photon picture is 196, and the second backlight control serial number of the blue photon picture is 95, which are respectively matched with the second liquid crystal control signal 22 and the third liquid crystal The calculation result 24 of the control signal 23 displays a green photon frame and a blue photon frame. The present invention can effectively reduce the occurrence of color separation by displaying color images through the above method.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention.

Claims (18)

1, a kind of display packing that reduces the separation of LCD look is characterized in that it comprises the following steps:

Produce a control signal of each sprite, this control signal comprises most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, and the method that produces this control signal again comprises the following steps:

Analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel;

Cutting apart this sprite is multiple display area;

Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals;

Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And

Produce the 3rd liquid crystal control signal of each this viewing area; And

Show those sprites in regular turn, it comprises the following steps:

Show a colorful sprite, it is simultaneously to cooperate the 3rd liquid crystal control signal to show according to this second backlight control signal of each this coloured light in each this viewing area; And

Show each coloured light sprite in regular turn, each this coloured light sprite is that this second backlight control signal according to this coloured light in each this viewing area cooperates this coloured light to show in this second a liquid crystal control signal of each this pixel and an operation result of the 3rd liquid crystal control signal.

2, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said those coloured light are for a red light, a green light, reach a blue light.

3, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the maximal value in those first liquid crystal control signals.

4, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is the mean value for those first liquid crystal control signals.

5, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals, and it is opened time root, multiply by this total exponent number value again.

6, the display packing of reduction LCD look separation according to claim 1 is characterized in that each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area:

GL _HDR＝(BL _Full/BL _HDR) ^1/r*GL _Full

Wherein, GL _HDRBe this second liquid crystal control signal, BL _FullBe this first backlight control signal, BL _HDRBe this second backlight control signal, r is a gamma factor, and GL _FullBe this first liquid crystal control signal.

7, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals.

8, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said the 3rd liquid crystal control signal is for being less than or equal to the minimum value in those second liquid crystal control signals.

9, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.

10, a kind of display packing that reduces the separation of LCD look is characterized in that it comprises the following steps:

Produce a control signal of each sprite, this control signal comprises most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, and the method that produces this control signal again comprises the following steps:

Analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel;

Cutting apart this sprite is multiple display area;

Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals;

Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And

Produce the 3rd liquid crystal control signal of each this viewing area; And

Show those sprites in regular turn, it comprises the following steps:

Show a colorful sprite, it cooperates the 3rd liquid crystal control signal to show by this second backlight control signal of this first coloured light and this second backlight control signal of this second coloured light by selecting one first coloured light and one second coloured light in those coloured light again;

Show one first coloured light sprite, it is that this second backlight control signal according to this first coloured light cooperates this first coloured light to show in this second a liquid crystal control signal of each this pixel and an operation result of the 3rd liquid crystal control signal;

Show one second coloured light sprite, it is that this second backlight control signal according to this second coloured light cooperates this second coloured light to show in this second liquid crystal control signal of each this pixel and this operation result of the 3rd liquid crystal control signal; And

Show one the 3rd coloured light sprite, it is that this second backlight control signal according to one the 3rd coloured light cooperates the 3rd coloured light to show in this second liquid crystal control signal of each this pixel.

11, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said those coloured light are for a red light, a green light, reach a blue light.

12, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the maximal value in those first liquid crystal control signals.

13, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is the mean value for those first liquid crystal control signals.

14, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals, and it is opened time root, multiply by this total exponent number value again.

15, the display packing of reduction LCD look separation according to claim 10 is characterized in that each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area:

GL _HDR＝(BL _Full/BL _HDR) ^1/r*GL _Full

Wherein, GL _HDRBe this second liquid crystal control signal, BL _FullBe this first backlight control signal, BL _HDRBe this second backlight control signal, r is a gamma factor, and GL _FullBe this first liquid crystal control signal.

16, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals of this first coloured light and this second coloured light.

17, the reduction LCD look according to claim 10 display packing of separating is characterized in that wherein said the 3rd liquid crystal control signal is the minimum value that is less than or equal in those second liquid crystal control signals of this first coloured light and this second coloured light.

18, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.

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