CN101101393A - Liquid crystal display and driving method thereof - Google Patents

Abstract

A liquid crystal display and its driving method, the liquid crystal display includes multiple picture element, multiple scanning lines and multiple data links, each picture element has multiple sub-picture elements, each sub-picture element is coupled with the data link and set up the switching element, storage capacitance and sub-picture element electrode separately, the switching element is coupled with the scanning line and receives the scanning signal and turns on, and can receive the data signal that the data link transmits, wherein the storage capacitance of the sub-picture element of each picture element is coupled with the scanning line of different rows of the said sub-picture element separately, or the storage capacitance of one of the sub-picture element of each picture element is coupled with the common electrode, the storage capacitance of the other sub-picture element is coupled with the scanning line of different rows of the sub-picture element. The driving method comprises the steps of sending scanning signals with multi-level levels, adjusting the level of at least one sub-pixel electrode in the sub-pixels of the same pixel, and driving the sub-pixels of the same pixel to have different levels. The invention can deflect the liquid crystal in the same pixel region by different angles, thereby solving the off-axis color cast phenomenon.

Description

Liquid crystal display and its driving method

technical field

The invention relates to a display, in particular to a liquid crystal display and a driving method thereof.

Background technique

Since liquid crystal displays are superior to traditional cathode ray tube (Cathode Ray Tube, CRT) displays in terms of resolution, weight, thickness, response speed, and power consumption, liquid crystal displays have gradually replaced traditional cathode ray tube displays. . In addition, in recent years, the technological progress of liquid crystal displays has advanced by leaps and bounds, and with the continuous expansion of the use of electronic products, the application of liquid crystal displays has become more and more extensive.

The screen of the liquid crystal display includes a plurality of pixels (pixels), and each pixel includes a certain area of liquid crystal for displaying images. Since the liquid crystal will be deflected by the electric field to change the transmittance of light, so when the liquid crystal display displays an image, it will apply a voltage to the pixel to generate an electric field in the liquid crystal in the pixel area, and control the inclination of the liquid crystal in the pixel area, so that By controlling the transmittance of light, that is, the brightness of pixels can be controlled. However, since the liquid crystal in each pixel area is only controlled by a single potential to deflect a single tilt angle, this will cause color and brightness distortions due to the different angles between the viewing line of sight and the liquid crystal when viewing the picture at different viewing angles. This phenomenon is the so-called off-axis color washout. This phenomenon will cause the color of the picture viewed at a large viewing angle to be different from the color viewed at a front viewing angle, so that a color picture with normal brightness can only be viewed within a certain viewing angle. If you watch the picture of the liquid crystal display at a position other than a certain viewing angle, you will see a picture with distorted colors due to the difference in brightness.

Therefore, the present invention proposes a liquid crystal display and a driving method thereof in view of the above problems, so that when viewing the picture of the liquid crystal display, the phenomenon of color and brightness distortion will not occur due to different viewing angles, thereby improving the display performance of the liquid crystal display , to solve the above problem.

Contents of the invention

The object of the present invention is to provide a liquid crystal display and its driving method, so that the liquid crystal in each pixel area has multiple deflection angles, so that when viewing the picture at any viewing angle, the sum of the included angles between the viewing line of sight and the liquid crystals with different deflection angles will be equal to The difference is not large, so that the phenomenon of off-axis color shift can be avoided, that is, the display performance of the liquid crystal display can be improved by increasing the viewing angle of the liquid crystal display.

The present invention provides a liquid crystal display, which comprises: N scanning lines arranged in rows, where N is a positive integer; a plurality of data lines arranged in columns and interlaced with the scanning lines; a plurality of pixels corresponding to the Scanning lines, each pixel has a plurality of sub-pixels, each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, and the sub-pixel electrodes are respectively electrically coupled to the switching element and the storage capacitor, each The switching elements of the sub-pixels of the pixel are coupled to the scanning lines of the same row, the storage capacitors of the sub-pixels of each pixel are respectively coupled to the scanning lines of different rows from the sub-pixels, and the sub-pixels are coupled to the data lines; a data driver, coupled to the data lines and respectively transmitting data signals to the sub-pixels; and a scanning driver, coupled to the scanning lines and respectively transmitting scanning signals to the switching elements of the sub-pixels in each row, and driving the switches The element is turned on to receive the data signal.

The above-mentioned liquid crystal display, wherein the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode in the sub-pixels of the same pixel is adjusted to drive the sub-pixels of the same pixel to have different levels .

In the above liquid crystal display, each pixel has a first sub-pixel and a second sub-pixel.

In the above liquid crystal display, the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N−1th scan line and the N+1th scan line.

In the above liquid crystal display, the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N+1th scan line and the N+2th scan line.

In the above liquid crystal display, the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N−1th scan line and the N−2th scan line.

The above-mentioned liquid crystal display, wherein the N-1th scan line spans the pixel area corresponding to the N-th scan line, and the N-1-th scan line is coupled to the pixel area corresponding to the N-th scan line Storage capacitor for one sub-pixel in each pixel.

The above-mentioned liquid crystal display, wherein the N-1th scan line crosses the pixel area corresponding to the N-2th scan line, and the N-1th scan line is coupled to the N-2th scan line The storage capacitance of one sub-pixel in each pixel of the scan line.

The above-mentioned liquid crystal display, wherein the N-1th scan line spans the pixel area corresponding to the N-th scan line and the pixel area corresponding to the N-2th scan line, and the N-1th scan line is coupled to Connected to a storage capacitor of a sub-pixel in each pixel corresponding to the Nth scan line and the N-2th scan line.

In the above liquid crystal display, the level change of the storage capacitor of the first sub-pixel is greater than the level change of the storage capacitor of the second sub-pixel.

In the above liquid crystal display, the switching elements of the sub-pixels of each pixel are coupled to the same data line.

In the liquid crystal display above, the data driver and the scan driver are further coupled to a timing controller, and the timing controller controls the data driver and the scan driver.

In the above liquid crystal display, each sub-pixel has a liquid crystal capacitor, and the liquid crystal capacitor is electrically coupled to the switching element and the storage capacitor.

The present invention also provides a liquid crystal display, which comprises: N scanning lines arranged in rows, where N is a positive integer; a plurality of data lines arranged in columns and interlaced with the scanning lines; a plurality of pixels respectively corresponding to the The scanning line, each pixel has a plurality of sub-pixels, each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, the sub-pixel electrode is electrically coupled to the switching element and the storage capacitor, each pixel The switching elements of the sub-pixels are coupled to the scanning lines of the same row, the storage capacitor of one of the sub-pixels of each pixel is coupled to the common electrode, and the storage capacitors of the other sub-pixels are coupled to the scanning lines of a different row from the sub-pixel, The sub-pixels are coupled to the data lines; a data driver is coupled to the data lines and transmits data signals to the sub-pixels; and a scan driver is coupled to the scan lines and transmits scan signals to each row switch elements of the sub-pixels, and drive the switch elements to conduct to receive the data signal.

In the above liquid crystal display, the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode of the sub-pixels of the same pixel is adjusted to drive the sub-pixels of the same pixel to have different levels.

In the above liquid crystal display, each pixel has a first sub-pixel and a second sub-pixel.

In the above liquid crystal display, the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the common electrode and the N+1th scan line.

In the above liquid crystal display, the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N−1th scan line and the common electrode.

In the above liquid crystal display, the level of the storage capacitor of the sub-pixel is adjusted, and the level of the storage capacitor of the other sub-pixel is not adjusted.

In the above liquid crystal display, the switching elements of the sub-pixels of each pixel are coupled to the same data line.

The present invention also provides a liquid crystal display, which includes: a plurality of scanning lines arranged in rows; a plurality of data lines arranged in columns and interlaced with the scanning lines; a plurality of pixels, each pixel having a plurality of sub-pixels Each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, and the sub-pixel electrode is electrically coupled to the switching element and the storage capacitor respectively, and the switching element of each sub-pixel in each pixel is respectively coupled to the Scanning lines, the storage capacitors of the sub-pixels of each pixel are respectively coupled to scanning lines in different rows from the sub-pixels, and the sub-pixels are coupled to the data lines; data drivers are coupled to the data lines and transmit a data signal to the sub-pixels; and a scan driver, coupled to the scan lines and respectively transmitting the scan signals to the switching elements of the sub-pixels in each row, and driving the switching elements to conduct to receive the data signals.

In the above liquid crystal display, the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode of the sub-pixels of the same pixel is adjusted to drive the sub-pixels of the same pixel to have different levels.

The present invention also provides a method for driving a liquid crystal display. The liquid crystal display has a plurality of scanning lines, a plurality of data lines and a plurality of pixels. The scanning lines and the data lines are respectively arranged in rows and columns and interlaced with each other. A pixel has a plurality of sub-pixels, each sub-pixel is provided with an electrically coupled switch element, a storage capacitor and a sub-pixel electrode, the switch element is coupled to the scanning line, and the storage capacitor of one of the sub-pixels of each pixel is coupled to On the common electrode, the storage capacitors of the remaining sub-pixels are coupled to the scanning lines of different rows from the sub-pixels, and the sub-pixels are coupled to the data lines. The method includes: respectively transmitting scanning signals to the scanning lines of each row, And transmit to the switching elements of the sub-pixels in each row to drive the switching elements to be turned on; and transmit data signals to the sub-pixels respectively; wherein, the scanning signal has multi-level levels, and adjusts the same pixel The level of at least one sub-pixel electrode of a sub-pixel drives the sub-pixels of the same pixel to have different levels.

In the above driving method, the switch elements of the sub-pixels of each pixel are coupled to the scan lines of the same row.

In the above driving method, the switching elements of each sub-pixel of each pixel are respectively coupled to the scan lines of different rows.

In the above driving method, each pixel has a first sub-pixel and a second sub-pixel.

In the above driving method, the level of the storage capacitor of the sub-pixel is adjusted, and the level of the storage capacitor of the other sub-pixel is not adjusted.

The liquid crystal display of the present invention comprises a plurality of scan lines, a plurality of data lines, a plurality of pixels, a data driver and a scan driver, wherein the scan lines and the data lines are arranged in rows and columns respectively, and the two are interlaced for transmission Scan signal and data signal. Each pixel of the present invention has a plurality of sub-pixels, and each sub-pixel is provided with an electrically coupled switching element, a storage capacitor, and a sub-pixel electrode; wherein, the switching element is coupled to a scanning line, and the sub-pixels of the pixel The storage capacitors are respectively coupled to scan lines in different rows from the sub-pixels, or the storage capacitors of one of the sub-pixels of the pixel are coupled to a common electrode, and the storage capacitors of the other sub-pixels are coupled to different rows from the sub-pixels scan lines; the data driver is coupled to the data lines and transmits data signals to the sub-pixels respectively; the scan driver is coupled to the scan lines and transmits scan signals to the switching elements of the sub-pixels in each row, and drives the switching elements to conduct to receive data signals.

The present invention adjusts the level of at least one sub-pixel electrode in the sub-pixels of the same pixel by sending scanning signals with multi-level levels to the pixels of each row, and drives the sub-pixels of the same pixel to have different levels, so that the The liquid crystals in the area of the same pixel are deflected at different angles, so that the phenomenon of off-axis color shift can be solved.

Description of drawings

Fig. 1 is the circuit diagram of the preferred embodiment of the present invention;

Figure 2 is a waveform diagram of a scan signal depicted according to the present invention;

3 is another waveform diagram of a scan signal depicted in accordance with the present invention;

4 is another waveform diagram of a scan signal depicted in accordance with the present invention;

5 is another waveform diagram of a scan signal depicted in accordance with the present invention;

6 is another waveform diagram of a scan signal depicted in accordance with the present invention;

Fig. 7 is the circuit diagram of another preferred embodiment of the present invention;

Fig. 8 is the circuit diagram of another preferred embodiment of the present invention;

9 is another waveform diagram of a scan signal depicted in accordance with the present invention;

10 is another waveform diagram of a scan signal depicted in accordance with the present invention;

Figure 11 is a layout diagram of a preferred embodiment of the present invention; and

Fig. 12 is a layout diagram of another preferred embodiment of the present invention.

Wherein, the reference signs are explained as follows:

1LCD display

10 scan driver

15 scan lines

20 data drives

25 data lines

30 timing controller

40 pixels

41 first sub-pixel

42 switching elements

43 storage capacitor

44 liquid crystal capacitor

45 second sub-pixel

46 switching elements

47 storage capacitor

48 liquid crystal capacitor

Vcom common electrode

Detailed ways

Fig. 1 is a circuit diagram of a preferred embodiment of the present invention. As shown in the figure, the liquid crystal display 1 includes a scan driver 10 , a plurality of scan lines 15 , a data driver 20 , a plurality of data lines 25 , a timing controller 30 and a plurality of pixels 40 . The scan driver 10 is coupled to the scan lines 15 to transmit scan signals, wherein the scan lines 15 {G _n }, n=1 2 , . . . , N are arranged in a row, and N is a positive integer. The data driver 20 is coupled to the data lines 25 to transmit data signals, wherein the data lines 25 {D _m }, m=1, 2, . . The timing controller 30 is coupled to the scan driver 10 and the data driver 20 , and is used for controlling the scan driver 10 and the data driver 20 to transmit scan signals and data signals.

The pixels 40 are arranged in a matrix, and each pixel 40 is provided with a plurality of sub-pixels. In this embodiment, the pixel 40 is provided with a first sub-pixel 41 and a second sub-pixel 45, wherein the first sub-pixel 41 and the second sub-pixel 45 are respectively provided with switching elements 42, 46, storage capacitors 43, 47 and liquid crystal Capacitors 44,48. The switch elements 42 and 46 can be transistors, the gates of which are coupled to the scan line 15 and turned on by receiving the scan signal. In addition, the sources of the switching elements 42 and 46 are both coupled to the data line 25 and receive data signals when they are turned on. The drain of the switch element 42 and one end of the storage capacitor 43 are both coupled to the sub-pixel electrode of the first sub-pixel 41, wherein the pixel electrode is one end of the liquid crystal capacitor 44, and the other end of the storage capacitor 43 is coupled to the scanning line 15 of the upper row. For example, the storage capacitor 43 of the first sub-pixel 41 located on the Nth scan line 15 is coupled to the N−1th scan line 15 . Same as above, the drain of the switching element 46 of the second sub-pixel 45 and one end of the storage capacitor 47 are both coupled to the sub-pixel electrode of the second sub-pixel 45, that is, electrically coupled to the liquid crystal capacitor 48, and the other end of the storage capacitor 47 One end is coupled to the previous row of scan lines 15 . As shown in the figure, the storage capacitor 47 of the second sub-pixel 45 located on the N+1th scan line 15 is coupled to the Nth scan line 15 .

According to the embodiment of the present invention, each pixel 40 is divided into a plurality of sub-pixels 41, 45, and the storage capacitors 43, 47 of each sub-pixel 41, 45 are respectively coupled to the corresponding scanning line 15 of the previous row, and also It is coupled to the scan lines 15 of other rows. As shown in FIG. 1, the storage capacitor 43 located on the scanning line 15 of the Nth row is coupled to the scanning line 15 of the N-1th row, and the storage capacitor 47 located on the scanning line 15 of the N+1th row is coupled to the scanning line of the Nth row. Line 15. In this way, the levels of the storage capacitors 43 and 47 will be affected by the driving signal of the corresponding previous scanning line 15 to change the levels of the sub-pixel electrodes of the sub-pixels 41 and 45 when the switching elements 42 and 46 receive the scanning signals. Therefore, the scanning driver 10 of the present invention adjusts the levels of the storage capacitors 43, 47 of the sub-pixels 41, 45 by transmitting scanning signals with multi-level levels, thereby affecting the sub-pixels of the sub-pixels 41, 45 electrode level, so that the sub-pixels 41 and 45 of the same pixel 40 have different levels, so that the sub-pixels 41 and 45 will generate different electric fields and act on the liquid crystals in the sub-pixels 41 and 45 areas, that is, the sub-pixels 41 , The liquid crystals in the area 45 will deflect at different angles, so the liquid crystals in the area 40 of the pixel will deflect at different angles, so when viewing the picture at any viewing angle, the phenomenon of off-axis color shift can be avoided or alleviated, thereby improving the display of the liquid crystal display performance.

FIG. 2 is a waveform diagram of a scanning signal according to an embodiment of the present invention. As shown in the figure, the scanning signal of the scanning line 15 in the N-1th row has a third-order level, which are Vgh, Vgc1 and Vg1 respectively, and the scanning signal of the scanning line 15 in the N-th row also has a third-order level, which are respectively Vgh, Vgc2 and Vg1, and the scan signal of the scan line 15 of the N+1 row is the same as the scan signal of the scan line 15 of the N-1 row. Similarly, the scan signal of the scan line 15 of the N+2 row is the same as that of the N row The scanning signals of the scanning lines 15 are the same. Since the storage capacitor 43 of the first sub-pixel 41 located on the N-th scan line 15 is coupled to the N-1-th scan line 15, the level of the first sub-pixel 41 is affected by the N-1-th scan line 15 scan signal effects. When the level of the scanning signal received by the switching element 42 of the first sub-pixel 41 rises from Vg1 to Vgh, the storage capacitor 43 starts to charge and the level of the first sub-pixel 41 rises.

When the level of the scanning signal drops from Vgh to Vgc2, the level of the storage capacitor 43 will drop and the level of the first sub-pixel 41 will drop accordingly, and is affected by the scanning signal of the scanning line 15 in the N-1th row. Level Vgc1 influence and drop. Afterwards, the level of the first sub-pixel 41 increases as the level of the scanning signal of the scanning line 15 in the N−1th row rises from Vgc1 to Vg1. Finally, the level of the first sub-pixel 41 will decrease as the level of the scanning signal of the N-th scanning line 15 decreases from Vgc2 to Vg1. It can be seen from the above that the level difference of the first sub-pixel 41 located on the scan line 15 in the Nth row is |Vgc1-Vg1|.

Similarly, the level of the storage capacitor 47 of the second sub-pixel 45 located on the scan line 15 of the N+1th row will be affected by the scan signal of the scan line 15 of the Nth row, and the level of the second sub-pixel 45 will accordingly affected. As shown in the figure, the level difference of the second sub-pixel 45 is |Vgc2-Vg1|. Since the scanning signals of the scanning line 15 in the N-1th row and the scanning line 15 in the Nth row are different, the first sub-pixel 41 on the scanning line 15 in the Nth row and the second sub-pixel 41 on the scanning line 15 in the N+1th row are different. The levels of the sub-pixels 45 will be different, so as to achieve the purpose of the present invention. In addition, according to the present invention, the level difference of the first sub-pixel 41 is greater than the level difference of the second sub-pixel 45, that is, |Vgc1-Vg1|>|Vgc2-Vg1|. In addition, due to the characteristics of liquid crystals, the electric field received by liquid crystals at the same position must change like an alternating current to avoid shortening the life of liquid crystals, so the scanning signal of the present invention will be reversed as the frame changes. As shown in the figure, the difference between the scanning signal of each scanning line 15 in the first frame and the second frame is opposite, just like alternating current.

3 to 6 are other preferred embodiments of the scanning signal of the present invention. The scan signal of the scan line 15 in the Nth row of FIG. 3 has a second-level level, which is Vgh and Vg1. It can be seen from the figure that the level difference of the second sub-pixel 45 located on the scan line 15 of the N+1th row is 0, while the level difference of the first sub-pixel 41 located on the scan line 15 of the Nth row is still |Vgc1-Vg1 |, so the level difference of the first sub-pixel 41 is greater than the level difference of the second sub-pixel 45 . The scan signals in the embodiment of FIG. 4 all have four levels. The levels of the scanning signal of the scanning line 15 in the N−1th row are Vgh, Vgc1, Vgc3 and Vg1, and the levels of the scanning signal of the scanning line 15 in the Nth row are Vgh, Vgc2, Vgc4 and Vg1. The level difference of the first sub-pixel 41 located on the Nth scan line 15 is |Vgc1-Vg1|, and the level difference of the second sub-pixel 45 located on the N+1th scan line 15 is |Vgc2-Vg1| , and |Vgc1-Vg1|>|Vgc2-Vg1|.

The scanning signal of the Nth scanning line 15 in the embodiment in FIG. 5 has three levels, which are Vgh, Vgc2 and Vg1. The level difference of the second sub-pixel 45 located on the N+1-th scan line 15 is |Vgc2-Vg1|, while the level difference of the first sub-pixel 41 located on the N-th scan line 15 is the same as the previous embodiment , and |Vgc1-Vg1|>|Vgc2-Vg1|. The scanning signal of the Nth scanning line 15 in the embodiment of FIG. 6 has only two level levels, which are Vgh and Vg1. The level difference of the second sub-pixel 45 located on the N+1-th scan line 15 is 0, while the level difference of the first sub-pixel 41 located on the N-th scan line 15 is the same as that of the previous embodiment, so the first The level difference of the sub-pixel 41 is larger than the level difference of the second sub-pixel 45 .

Fig. 7 is a circuit diagram of another preferred embodiment of the present invention. As shown in the figure, the storage capacitor 47 of the second sub-pixel 45 in this embodiment is coupled to the common electrode Vcom, so the level of the second sub-pixel 45 will not be adjusted, but the level of the first sub-pixel 41 is still It will be adjusted by the scanning signal of the scanning line 15 in the previous row, so the level of the first sub-pixel 41 and the second sub-pixel 45 will still be different, so the liquid crystal in the sub-pixel 41, 45 area of the pixel 40 can also be deflected Different angles can solve the phenomenon of off-axis color cast. It can be known from the embodiment in FIG. 1 and FIG. 7 that, in addition to these two implementations, the present invention can also couple the storage capacitor 43 of the first sub-pixel 41 to the common electrode Vcom, and the storage capacitor 43 of the second sub-pixel 45 47 is coupled to the scanning line 15 of the next row, or the storage capacitors 43 and 47 of the first sub-pixel 41 and the second sub-pixel 45 are respectively coupled to the corresponding scanning line 15 of the next row, or even the first sub-pixel The storage capacitor 43 of 41 is coupled to the scan line 15 of the previous row, and the storage capacitor 47 of the second sub-pixel 45 is coupled to the scan line 15 of the next row, that is, to the scan line 15 of other rows.

Fig. 8 is a circuit diagram of another preferred embodiment of the present invention. As shown in the figure, in this embodiment, the switching elements 42 and 46 of the sub-pixels 41 and 45 of each pixel 40 are coupled to the same scanning line 15 , so that the number of scanning lines 15 can be reduced and the cost can be reduced. In addition, the storage capacitor 43 of the first sub-pixel 41 is coupled to the scan line 15 of the previous row, and the storage capacitor 47 of the second sub-pixel 45 is coupled to the scan line 15 of the next row, and the switching element 42 of the first sub-pixel 41 The data line 25 is coupled, and the switching element 46 of the second sub-pixel 45 is electrically coupled to the switching element 42, so that the data signal will be transmitted to the switching element of the second sub-pixel 45 through the switching element 42 of the first sub-pixel 41 46 , that is, the switching elements 42 and 46 are equally coupled to the same data line 25 . From the above, it can be seen that the levels of the sub-pixels 41 and 45 of the pixel 40 will be adjusted by the scanning signals of the scanning line 15 in the upper row and the scanning line 15 in the lower row respectively, so that the levels of the sub-pixels 41 and 45 will be different. The planes are not the same to avoid off-axis color shift.

FIG. 9 is a waveform diagram of a scanning signal applied to the embodiment of FIG. 8 . As shown in FIG. 9 , the scanning signals all have four levels, which are Vgh, Vgc1 , Vgc2 and Vg1 respectively. Taking the pixel 40 on the scanning line 15 of the Nth row as an example, when the level of the scanning signal on the scanning line 15 of the Nth row drops from Vgh to Vgc1, the level of the first subpixel 41 will be affected by the level of the N-1th row. The scanning signal of the scanning line 15 is adjusted, and the level of the second sub-pixel 45 will be adjusted by the scanning signal of the scanning line 15 in the N+1th row. The scanning signal shown in FIG. 10 is also applied to the embodiment in FIG. 8. The embodiment in FIG. 10 is different from the embodiment in FIG. 9 in that the scanning signals in the embodiment in FIG. Vgc2.

In the embodiment depicted in FIG. 8 , the storage capacitor 47 of the second sub-pixel 45 can also be coupled to the common electrode Vcom without adjustment, and the storage capacitor 43 of the first sub-pixel 41 is still coupled to the scanning line 15 of the previous row for adjustment. Alternatively, the storage capacitor 43 of the first sub-pixel 41 is coupled to the common electrode Vcom without adjustment, and the storage capacitor 47 of the second sub-pixel 45 is still coupled to the scan line 15 of the next row for adjustment. In addition, the storage capacitors 43 and 47 of the first sub-pixel 41 and the second sub-pixel 45 in the Nth row of the embodiment shown in FIG. , or the storage capacitors 43 and 47 of the first sub-pixel 41 and the second sub-pixel 45 in the N-th row are respectively coupled to the scan lines 15 in the N-1-th row and the N-2-th row.

型，而第一子像素41与第二子像素45分别呈 型。第二子像素45耦接于第一子像素41的两个三角形之间而呈

型。扫描线15设计为呈ㄈ型，且偶数行与奇数行的扫描线15分别位于液晶显示器的两侧，且ㄈ型的开口相对。如此，ㄈ型扫描线15的下方横向直线可耦接像素40的下方，而耦接第一子像素41与第二子像素45的开关元件42、46，并且可横跨下一行的像素40的上方，而耦接像素40的第一子像素41的储存电容43。另外，ㄈ型扫描线15的上方横向直线可横跨上一行的像素40的中间部分，而耦接上一行的像素40的第二子像素45的储存电容47。通过上述说明与附图可知，这样的布局设计即可让像素40的子像素41、45的储存电容43、47不用跨越本身所在的扫描线15，即可分别与上一行扫描线15和下一行扫描线15耦接。FIG. 11 is a layout diagram of the embodiment in FIG. 8 . In order to avoid the circuit shown in FIG. 8, when the storage capacitor 47 of the second sub-pixel 45 is coupled to the scan line 15 of the next row, it must cross the scan line 15 where it is located, so the pixel 40 is designed to be

type, and the first sub-pixel 41 and the second sub-pixel 45 are respectively type. The second sub-pixel 45 is coupled between the two triangles of the first sub-pixel 41 to form a

type. The scanning lines 15 are designed to be in the shape of an ㄈ, and the scanning lines 15 of the even and odd rows are respectively located on two sides of the liquid crystal display, and the openings of the ㄈ shape are opposite to each other. In this way, the horizontal straight line below the ℈-shaped scanning line 15 can be coupled to the bottom of the pixel 40, and coupled to the switching elements 42, 46 of the first sub-pixel 41 and the second sub-pixel 45, and can straddle the pixels 40 of the next row. Above, and coupled to the storage capacitor 43 of the first sub-pixel 41 of the pixel 40 . In addition, the upper horizontal straight line of the ℈-shaped scanning line 15 may cross the middle part of the pixels 40 in the previous row, and be coupled to the storage capacitor 47 of the second sub-pixel 45 of the pixels 40 in the previous row. It can be seen from the above description and the accompanying drawings that such a layout design allows the storage capacitors 43 and 47 of the sub-pixels 41 and 45 of the pixel 40 to be connected to the scanning line 15 of the previous row and the scanning line of the next row respectively without crossing the scanning line 15 where it is located. The scanning line 15 is coupled.

型，第一子像素41位于锯齿形扫描线15的上方横向直线与中间横向直线之间，第二子像素45则位于

型扫描线15的中间横向直线与下方横向直线之间，第一子像素41与第二子像素45的开关元件42、46耦接于

型扫描线15的中间横向直线并耦接数据线25。此外，锯齿形扫描线15的上方横向直线横跨上一行的第二子像素45而耦接储存电容47，而下方横向直线则横跨下一行的第一子像素41而耦接储存电容43。FIG. 12 is a layout diagram applied to the embodiment of FIG. 8 . The switch elements 42 , 46 of the sub-pixels 41 , 45 in this embodiment are both coupled to the data line 25 , and the forms of the sub-pixels 41 , 45 and the scan line 15 are different from the embodiment in FIG. 11 . The sub-pixels 41 and 45 in this embodiment are both rectangular, and the first sub-pixel 41 and the second sub-pixel 45 are arranged vertically, and the first sub-pixel 41 is located above the second sub-pixel 45 . In addition, the scan line 15 is a zigzag scan line, all in the form of

type, the first sub-pixel 41 is located between the upper horizontal straight line and the middle horizontal straight line of the zigzag scanning line 15, and the second sub-pixel 45 is located

Between the middle horizontal straight line and the lower horizontal straight line of the type scan line 15, the switching elements 42, 46 of the first sub-pixel 41 and the second sub-pixel 45 are coupled to

The middle horizontal line of the scan line 15 is coupled to the data line 25 . In addition, the upper horizontal straight line of the zigzag scan line 15 crosses the second sub-pixels 45 in the previous row and is coupled to the storage capacitor 47 , while the lower horizontal straight line crosses the first sub-pixels 41 in the next row and is coupled to the storage capacitor 43 .

To sum up, the liquid crystal display and its driving method of the present invention are mainly divided into multiple sub-pixels by dividing each pixel, and allowing the storage capacitors of the sub-pixels to be respectively coupled to scanning lines in different rows from the sub-pixels. , or let the storage capacitor of one of the sub-pixels be coupled to the common electrode, while the storage capacitors of the other sub-pixels are coupled to the scanning lines of different rows from the sub-pixels, and in addition cooperate with the scanning signal with multi-level levels, that is, The level of the sub-pixel electrode of at least one sub-pixel of the pixel is adjusted, so that the sub-pixels in the same pixel have different levels respectively, so that the sub-pixels have different electric field strengths, and are used to drive the sub-pixels of each pixel The liquid crystal deflects at different inclination angles and has different transmittances, so that brightness and color distortion can be avoided when viewing the images of the liquid crystal display at different viewing angles, and the display performance of the liquid crystal display can be improved.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention The scope defined by the appended claims shall prevail.

Claims (27)

1. A liquid crystal display comprising: N scan lines arranged in rows, N is a positive integer; A plurality of data lines arranged in columns and interlaced with the scanning lines; A plurality of pixels, respectively corresponding to the scanning lines, each pixel has a plurality of sub-pixels, each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, and the sub-pixel electrodes are respectively connected to the switching element and the The storage capacitors are electrically coupled, the switching elements of the sub-pixels of each pixel are coupled to the scanning lines of the same row, and the storage capacitors of the sub-pixels of each pixel are respectively coupled to the scanning lines of different rows from the sub-pixels. the sub-pixel is coupled to the data line; a data driver, coupled to the data lines and respectively transmitting data signals to the sub-pixels; and The scan driver is coupled to the scan lines and transmits scan signals to the switching elements of the sub-pixels in each row, and drives the switching elements to conduct to receive the data signals. 2. The liquid crystal display as claimed in claim 1, wherein the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode in the sub-pixels of the same pixel is adjusted to drive the sub-pixels of the same pixel. Pixels have different levels. 3. The liquid crystal display as claimed in claim 1, wherein each pixel has a first sub-pixel and a second sub-pixel. 4. The liquid crystal display as claimed in claim 3, wherein the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N-1th scan line and the N+1th scan line scan lines. 5. The liquid crystal display as claimed in claim 3, wherein the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N+1th scan line and the N+2th scan line scan lines. 6. The liquid crystal display as claimed in claim 3, wherein the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N-1th scan line and the N-2th scan line scan lines. 7. The liquid crystal display as claimed in claim 4, wherein the N-1th scan line spans the pixel area corresponding to the N-th scan line, and the N-1th scan line is coupled to the pixel area corresponding to the N-th scan line A storage capacitor of one sub-pixel in each pixel of N scanning lines. 8. The liquid crystal display as claimed in claim 4 , wherein the N-1th scan line spans the pixel area corresponding to the N-2th scan line, and the N-1th scan line is coupled to the corresponding A storage capacitor of a sub-pixel in each pixel of the N-2th scan line. 9. The liquid crystal display as claimed in claim 4, wherein the N-1th scanning line spans the pixel area corresponding to the N-th scanning line and the pixel area corresponding to the N-2th scanning line, and the N-th scanning line One scan line is coupled to the storage capacitor of one sub-pixel in each pixel corresponding to the Nth scan line and the N−2th scan line. 10. The liquid crystal display as claimed in claim 3, wherein the level variation of the storage capacitor of the first sub-pixel is larger than the level variation of the storage capacitor of the second sub-pixel. 11. The liquid crystal display as claimed in claim 1, wherein the switching elements of the sub-pixels of each pixel are coupled to the same data line. 12. The liquid crystal display as claimed in claim 1, wherein the data driver and the scan driver are further coupled to a timing controller, and the timing controller controls the data driver and the scan driver. 13. The liquid crystal display as claimed in claim 1, wherein each sub-pixel has a liquid crystal capacitor electrically coupled to the switching element and the storage capacitor. 14. A liquid crystal display comprising: N scan lines arranged in rows, N is a positive integer; A plurality of data lines arranged in columns and interlaced with the scanning lines; A plurality of pixels, respectively corresponding to the scanning lines, each pixel has a plurality of sub-pixels, each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, and the sub-pixel electrode is connected to the switching element and the storage capacitor respectively Electrically coupled, the switching elements of the sub-pixels of each pixel are coupled to the scanning line of the same row, the storage capacitor of one of the sub-pixels of each pixel is coupled to the common electrode, and the storage capacitors of the other sub-pixels are coupled to the same electrode. Scanning lines of different rows of sub-pixels, the sub-pixels are coupled to the data lines; a data driver, coupled to the data lines and respectively transmitting data signals to the sub-pixels; and The scan driver is coupled to the scan lines and transmits scan signals to the switching elements of the sub-pixels in each row, and drives the switching elements to conduct to receive the data signals. 15. The liquid crystal display as claimed in claim 14, wherein the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode of the sub-pixel of the same pixel is adjusted to drive the sub-pixel of the same pixel have different levels. 16. The liquid crystal display as claimed in claim 14, wherein each pixel has a first sub-pixel and a second sub-pixel. 17. The liquid crystal display as claimed in claim 16, wherein the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the common electrode and the N+1th scan line. 18. The liquid crystal display as claimed in claim 16, wherein the two storage capacitors of the first sub-pixel and the second sub-pixel corresponding to the Nth scan line are respectively coupled to the N-1th scan line and the common electrode. 19. The liquid crystal display as claimed in claim 16, wherein a level of a storage capacitor of a sub-pixel is adjusted, and a level of the storage capacitor of another sub-pixel is not adjusted. 20. The liquid crystal display as claimed in claim 14, wherein the switching elements of the sub-pixels of each pixel are coupled to the same data line. 21. A liquid crystal display comprising: a plurality of scan lines arranged in rows; a plurality of data lines arranged in columns and interlaced with the scanning lines; A plurality of pixels, each pixel has a plurality of sub-pixels, each sub-pixel is provided with a switching element, a storage capacitor and a sub-pixel electrode, and the sub-pixel electrode is electrically coupled to the switching element and the storage capacitor respectively, and each pixel The switching elements of each sub-pixel are respectively coupled to the scan line, the storage capacitors of the sub-pixels of each pixel are respectively coupled to a scan line in a row different from the sub-pixel, and the sub-pixel is coupled to the data line; a data driver, coupled to the data lines and respectively transmitting data signals to the sub-pixels; and The scan driver is coupled to the scan lines and transmits scan signals to the switching elements of the sub-pixels in each row, and drives the switching elements to conduct to receive the data signals. 22. The liquid crystal display as claimed in claim 21, wherein the scan signal transmitted by the scan driver has multi-level levels, and the level of at least one sub-pixel electrode of the sub-pixel of the same pixel is adjusted to drive the sub-pixel of the same pixel have different levels. 23. A driving method of a liquid crystal display, the liquid crystal display has a plurality of scanning lines, a plurality of data lines and a plurality of pixels, the scanning lines and the data lines are respectively arranged in rows and columns and interlaced with each other, each pixel There are a plurality of sub-pixels, each sub-pixel is provided with an electrically coupled switch element, a storage capacitor and a sub-pixel electrode, the switch element is coupled to the scan line, and the storage capacitor of one of the sub-pixels of each pixel is coupled to the common electrode, and the storage capacitors of the remaining sub-pixels are coupled to the scanning lines of different rows from the sub-pixels, and the sub-pixels are coupled to the data lines. The method includes: respectively transmitting scanning signals to the scanning lines of each row, and to the switching elements of the sub-pixels of each row, so as to drive the switching elements to conduct; and respectively transmitting data signals to the sub-pixels; Wherein, the scanning signal has multi-level levels, and the level of at least one sub-pixel electrode of the sub-pixels of the same pixel is adjusted to drive the sub-pixels of the same pixel to have different levels. 24. The driving method as claimed in claim 23, wherein the switching elements of the sub-pixels of each pixel are coupled to the scan lines of the same row. 25. The driving method as claimed in claim 23, wherein the switching elements of each sub-pixel of each pixel are respectively coupled to the scan lines of different rows. 26. The driving method as claimed in claim 23, wherein each pixel has a first sub-pixel and a second sub-pixel. 27. The driving method as claimed in claim 26, wherein the level of the storage capacitor of the sub-pixel is adjusted, and the level of the storage capacitor of the other sub-pixel is not adjusted.

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