TWI638349B - Pixel unit and displaying method - Google Patents

Abstract

A pixel unit includes a first pixel and a second pixel. The first pixel is used to receive an AC voltage source with a reference voltage to display a predetermined grayscale brightness. The second pixel is used to receive data signals. The update frequency of the AC voltage source is less than the update frequency of the data signal.

Description

Pixel unit and display method

The present invention relates to a display technology, and more particularly, to a pixel unit and a display method.

Field Sequential (FS) is one of the display technologies of display devices. It has the advantages of wide color gamut, high aperture ratio, high resolution, and low cost (no color resistance). However, based on the display principle of the field sequential method, when the user views the display device using the field sequential method, it is possible to see the phenomenon of color separation, which affects the user's perception.

It can be seen that the above existing methods obviously still have inconveniences and defects, and need to be improved. In order to solve the above-mentioned problems, the related fields have made every effort to find a solution, but a suitable solution has not been developed for a long time.

This summary is intended to provide a simplified summary of this disclosure so that readers may have a basic understanding of this disclosure. This summary is not a comprehensive overview of the disclosure, and it is not intended to indicate important / critical elements of the embodiments of the invention or to define the scope of the invention.

An object of the present invention is to provide a pixel unit and a display method, so as to improve the problems of the prior art.

To achieve the above object, the first technical aspect of the present invention relates to a pixel unit, which includes a first pixel and a second pixel. The first pixel is used to receive an AC voltage source with a reference voltage to display a predetermined grayscale brightness. The second pixel is used to receive data signals. The update frequency of the AC voltage source is less than the update frequency of the data signal.

To achieve the above object, the second technical aspect of the present invention relates to a display method, which is applied to the pixel unit described in the first technical aspect. The area ratio of the first pixel to the second pixel is 1: (n-1), and (n-1) is a positive integer. The display method includes: setting the original grayscale brightness displayed by the pixel unit; determining whether the original grayscale brightness is greater than or equal to a predetermined grayscale brightness and n ratio of the first pixel display; if the original grayscale brightness is greater than or equal to the ratio, according to a predetermined The gray-scale brightness displays the first gray-scale brightness by the second pixel; and if the original gray-scale brightness is less than the ratio, the second gray-scale brightness is displayed by the second pixel according to the predetermined gray-scale brightness.

Therefore, according to the technical content of the present invention, the embodiments of the present invention provide a pixel unit and a display method, so as to improve the user ’s viewing of the display device using the field sequential method, the phenomenon of color separation will be seen and affect the user ’s Look and feel.

After referring to the following embodiments, those with ordinary knowledge in the technical field to which the present invention pertains can easily understand the basic spirit and other inventive objectives of the present invention, as well as the technical means and implementation aspects adopted by the present invention.

100, 100A, 100B ‧‧‧ pixel units

110‧‧‧ the first pixel

120‧‧‧ the second pixel

700‧‧‧ Method

710 ~ 750‧‧‧step

800‧‧‧ Method

810 ~ 850‧‧‧step

900‧‧‧ Method

910 ~ 950‧‧‧ steps

BL‧‧‧ backlight signal

data, data1, data2‧‧‧ data signals

DL‧‧‧Data Line

frame1, frame2‧‧‧picture period

gate, gate1, gate2‧‧‧scan signals

GL‧‧‧scan line

power‧‧‧AC voltage source

PL‧‧‧Power cord

T1 ~ T3‧‧‧‧

In order to make the above and other objects, features, advantages, and embodiments of the present invention more comprehensible, the description of the drawings is as follows: FIG. 1 is a schematic diagram of a pixel unit according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a driving waveform according to another embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a pixel unit according to another embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a driving waveform according to another embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating a pixel unit according to another embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a driving waveform according to another embodiment of the present invention.

FIG. 7 is a flowchart of a display method according to an embodiment of the present invention.

FIG. 8 is a flowchart of a display method according to another embodiment of the present invention.

FIG. 9 is a flowchart of a display method according to another embodiment of the present invention.

According to the usual operation method, various features and components in the figure are not drawn to scale. The drawing method is to present the specific features and components related to the present invention in an optimal way. In addition, between different drawings, the same or similar element symbols are used to refer to similar elements / components.

In order to make the description of this disclosure more detailed and complete, the following provides an illustrative description of the implementation mode and specific embodiments of the present invention; but this is not the only form of implementing or using the specific embodiments of the present invention. The embodiments include the features of a plurality of specific embodiments, as well as the method steps and their order for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and sequence of steps.

Unless otherwise defined in this specification, the meanings of scientific and technical terms used herein are the same as those understood and used by those having ordinary knowledge in the technical field to which the present invention pertains. In addition, when not in conflict with the context, the singular noun used in this specification covers the plural form of the noun; and the plural noun used also covers the singular form of the noun.

In addition, as used in this document, "coupling" may mean that two or more elements make direct physical or electrical contact with each other, or indirectly make physical or electrical contact with each other, or that two or more elements operate mutually Or action.

FIG. 1 is a schematic diagram illustrating a pixel unit according to an embodiment of the present invention. As shown in the figure, the pixel unit 100 includes a first pixel 110 and a second pixel 120. In operation, the first pixel 110 is used to receive an AC voltage source power with a reference voltage to display a predetermined grayscale brightness. The second pixel 120 is used to receive data signals data. In addition, the update frequency of the AC voltage source power is less than the update frequency of the data signal data.

As described above, the first pixel 110 in the pixel unit 100 receives the AC voltage source power with a reference voltage and continuously emits light, such as the first pixel 110 continuously displays white with a fixed gray level as the main brightness source in the pixel unit 100. In addition, the second pixel 120 in the pixel unit 100 receives the data signal data to emit light accordingly, and serves as a supplementary source of brightness in the pixel unit 100. According to this, even if the display device using the field sequential method produces a color separation phenomenon, since the first pixel 110, which is the main brightness source in the pixel unit 100, has already provided part of the brightness, it is similar to the first pixel 110. The color intensity of the adjacent second pixel 120 can be lower than that of pixels / sub pixels in a general display device. Accordingly, the color separation boundary seen by the user is less obvious, and the user's perception can be improved.

In order to make the operation of the pixel unit 100 of the present invention easy to understand, please refer to FIG. 2 together, which is a schematic diagram showing a driving waveform according to another embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 together. For the connection relationship, the first pixel 110 is coupled to the power line PL, the second pixel 120 is coupled to the data line DL, and the scanning line GL is coupled together. Following the first pixel 110 and the second pixel 120. In operation, the power supply line PL is used to provide an AC voltage source power with a reference voltage to the first pixel 110 so that the first pixel 110 can display a predetermined gray level brightness (for example, white with a fixed gray level). In addition, the data line DL provides a data signal data to the second pixel 120, so that the second pixel 120 can display a desired image based on displaying different gray levels of brightness. Furthermore, the scanning line GL provides a scanning signal gate to turn on or off the first pixel 110 and the second pixel 120 together. In addition, as shown in FIG. 2, the update frequency of the data signal data is an integer multiple of the update frequency of the AC voltage source power. In an embodiment, if the screen update frequency of the display device using the pixel unit 100 is 60 Hertz (Hz), the update frequencies of the scan signal gate, the AC voltage source power, and the data signal data are 180 Hertz (Hz), respectively. , 30 Hertz (Hz) and 180 Hertz (Hz). However, the present invention does not The above embodiment is limited, and it is only used to exemplarily illustrate one of the implementation manners of the present invention.

FIG. 3 is a schematic diagram illustrating a pixel unit according to another embodiment of the present invention. Compared with the pixel unit 100 shown in FIG. 1, the first pixel 110 of the pixel unit 100A shown in FIG. 3 is coupled to the first data line D1, and the second pixel 120 is coupled. On the second data line D2. In order to make the operation mode of the pixel unit 100A of the present invention easy to understand, please refer to FIG. 4 together, which is a schematic diagram showing a driving waveform according to another embodiment of the present invention. Although the first pixel 110 here is coupled to the first data line D1, the first data line D1 can also be used to provide an AC voltage source with a reference voltage to the first pixel 110 (such as providing a low update frequency). The data signal data1 is given to the first pixel 110), so that the first pixel 110 displays a predetermined gray level brightness (such as white with a fixed gray level). In addition, the data line D2 can also provide the data signal data2 to the second pixel. The second pixel 120 causes the second pixel 120 to display different grayscale brightness. Therefore, in the pixel unit 100A, the first pixel 110 is used as the main luminance source, and the second pixel 120 is used as the supplementary source of the brilliance in the pixel unit 100. The color intensity of the second-time pixel 120 can be smaller than the pixels / sub-pixels in a general display device. According to this, the color separation boundary seen by the user is less obvious, and the user's perception can be improved. As shown in Figure 4, the update frequency of the data signal data2 is an integer multiple of the update frequency of the AC voltage source (such as the data signal data1).

FIG. 5 is a schematic diagram illustrating a pixel unit according to another embodiment of the present invention. Compared with the pixel unit 100A shown in FIG. 3, the first pixel 110 and the second pixel 120 of the pixel unit 100B shown in FIG. 5 are respectively coupled to the first scan line G1 and the second Scan line G2. To make the pixel unit of the present invention The operation mode of 100B is easy to understand. Please refer to FIG. 6 together, which is a schematic diagram showing a driving waveform according to another embodiment of the present invention. As shown in the figure, in a frame period frame1, the number of enable times of the scan signal gate2 provided by the second scan line G2 is greater than the number of enable times of the scan signal gate1 provided by the first scan line G1. Since the first pixel 110 and the second pixel 120 are respectively coupled to different scan lines G1 and G2, the first pixel 110 and the second pixel 120 can be turned on and off according to the scan line G1. The scanning signals gate1 and gate2 provided by G2 are individually controlled.

Please refer to Fig. 1, Fig. 3 and Fig. 5. In the figure, the areas of the first pixel 110 and the second pixel 120 occupy 1 / n of the area of the pixel units 100, 100A, and 100B and (n -1) / n, where n is a positive integer. Taking the first picture as an example, the first pixel 110 occupies 1/3 of the area of the pixel unit 100, and the second pixel 120 occupies 2/3 of the area of the pixel unit 100, or the first time The pixel 110 occupies 1/4 of the area of the pixel unit 100, and the second pixel 120 occupies 3/4 of the area of the pixel unit 100. In one embodiment, the pixel units 100, 100A, and 100B shown in FIG. 1, FIG. 3, and FIG. 5 can be applied to a field sequential blue phase liquid crystal display device. However, the present invention is not limited to the foregoing embodiments, and is only used to exemplarily illustrate one of the implementation manners of the present invention.

FIG. 7 is a flowchart of a display method according to an embodiment of the present invention. As shown in the figure, the display method 700 can be applied to the pixel units 100, 100A, and 100B shown in FIG. 1, FIG. 3, and FIG. The area ratio of the pixel 110 to the second pixel 120 is 1: (n-1), and (n-1) is a positive integer. The above display method 700 includes the following steps: Step 710: Set the original grayscale brightness displayed by the pixel unit; Step 720: Determine whether the original grayscale brightness is greater than or equal to the ratio of the predetermined grayscale brightness and n for the first pixel display; Step 730: If the original grayscale brightness is greater than Is equal to the ratio, the first grayscale brightness is displayed by the second pixel according to the predetermined grayscale brightness; step 740: if the original grayscale brightness is less than the ratio, the second grayscale is displayed by the second pixel according to the predetermined grayscale brightness Brightness; and step 750: correct the grayscale brightness displayed by the pixel unit.

Please refer to step 710. Taking the first picture as an example, the original grayscale brightness displayed by the pixel unit 100 is set. The pixel unit 100 includes the first pixel 110 and the second pixel 120. The first pixel 110 has been displayed according to the AC voltage source power to display the predetermined grayscale brightness. Therefore, the grayscale brightness displayed by the second pixel 120 must be recalculated to ensure that the entire pixel unit 100 can display the correct grayscale brightness. According to this, steps 720 to 750 can be adopted to make the entire pixel unit 100 display the correct grayscale brightness, which will be described later.

Please refer to step 720 to determine whether the original grayscale brightness is greater than or equal to a ratio of a predetermined grayscale brightness and n displayed by the first pixel 110. If the original grayscale brightness is greater than or equal to the above ratio, step 730 is executed to display the first grayscale brightness by the second pixel 120 according to the predetermined grayscale brightness. If the original grayscale brightness is smaller than the above ratio, step 740 is executed to display the second grayscale brightness by the second pixel 120 according to the predetermined grayscale brightness. Subsequently, in step 750, the grayscale brightness displayed by the pixel unit 100 is corrected according to the first grayscale brightness or the second grayscale brightness displayed by the second pixel 120, so that the entire pixel unit 100 is displayed correctly. Grayscale brightness.

FIG. 8 is a flowchart of a display method according to another embodiment of the present invention. As shown in the figure, the display method 800 can be applied to the pixel unit 100 shown in FIG. 1. The area ratio of the first pixel 110 to the second pixel 120 in the pixel unit 100 is 1:: n-1) and (n-1) are positive integers. The above display method 800 includes the following steps: Step 810: Set the original grayscale brightness C displayed by the pixel unit, and the predetermined grayscale brightness W of the first pixel display; Step 820: determine whether the original grayscale brightness C is greater than or equal to W / n; Step 830: If the original grayscale brightness C is greater than or equal to W / n, the first grayscale brightness displayed by the second pixel is L = ( C × n - W ) / ( n -1); Step 840: If the original grayscale brightness C is less than W / n, the second grayscale brightness displayed by the second pixel is L = ( C × n - W ) / ( n -1) + W / 2 n ; and step 850: Correct the grayscale brightness of the pixel unit display.

Please refer to step 810. Taking the first figure as an example, set any monochrome original grayscale brightness C displayed by the pixel unit 100, and set a predetermined grayscale brightness W displayed by the first pixel 110. At this stage, the grayscale brightness A displayed by the uncorrected pixel unit 100 is A = C × ( n -1) / n + W / n , and the above-mentioned C may be the original grayscale brightness of red, green, or blue. For example, when the original grayscale luminance C of red is L60, the true grayscale luminance A of red is L75; when the original grayscale luminance C of green is L120, the true grayscale luminance A of green is L120; when blue When the color original grayscale brightness C is L180, the true grayscale brightness A of blue is L165.

Next, in step 820, it is determined whether the original grayscale brightness C is greater than or equal to W / n. If the original grayscale brightness C is greater than or equal to W / n, step 830 is performed, and the first grayscale brightness displayed by the second pixel 120 is L = ( C × n - W ) / ( n -1). If the original grayscale brightness C is less than W / n, step 840 is performed, and the second grayscale brightness displayed by the second pixel 120 is L = ( C × n - W ) / ( n -1) + W / 2 n . In steps 830 and 840, for example, when the original grayscale luminance C of red is L60, the first grayscale luminance L of red is L80; when the original grayscale luminance C of green is L120, the first grayscale is green The grayscale brightness L is L160; when the blue original grayscale brightness C is L180, the first grayscale brightness L of blue is L240.

Subsequently, in step 850, the gray-scale brightness B displayed by the pixel unit 100 is modified as B = L × ( n -1) / n + W / n . In step 850, for example, when the first grayscale luminance L of red is L80, the true grayscale luminance B of red is L60; when the first grayscale luminance L of green is L160, the trueness of green The grayscale brightness B is L120; when the first grayscale brightness L of blue is L240, the true grayscale brightness B of blue is L180. It should be noted that, please refer to FIG. 1 and FIG. 2 together. In the above steps, the red, green, or blue displayed by the second pixel 120 of the pixel unit 100 may be adopted, but not limited to the field sequential method. For presentation, taking the second picture as an example, in a picture period frame1, the second pixel 120 may sequentially display red, green, or blue during periods T1, T2, and T3 (the display order of colors is not limited to this, Depending on the actual needs), because the time of the frame period frame1 is extremely short, from the perspective of the viewer, you will see a mix of red, green, or blue. From this, it can be seen that after the above correction, the pixel unit 100 The whole is able to display the correct grayscale brightness.

FIG. 9 is a flowchart of a display method according to another embodiment of the present invention. As shown in the figure, the display method 900 can be applied to the pixel unit 100A shown in FIG. 3. The area ratio of the first pixel 110 to the second pixel 120 in the pixel unit 100A is 1: :( n-1) and (n-1) are positive integers. The above display method 900 includes the following steps: Step 910: Set the original grayscale brightness of the pixel monochrome display to the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome grayscale brightness C3, respectively. The predetermined grayscale brightness W of the first pixel display, wherein the predetermined grayscale brightness W of the first pixel display is the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome The average value of the grayscale brightness C3; Step 920: determine whether the brightness of the first monochrome grayscale C1, the second monochrome grayscale C2, or the third monochrome grayscale C3 is greater than W / n; step 930: If the first Monochrome grayscale brightness C1, second monochrome grayscale brightness C2, and third monochrome grayscale brightness C3 are greater than or equal to W / n, then the first grayscale brightness displayed by the second pixel is L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) / 3 ( n -1); Step 940: if the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third single One of the color gray levels C3 is less than W / n, then the second gray level brightness displayed by the second pixel is L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) (n +1) / 6 n ( n -1); and a step 950: the correction pixel unit to display gray Brightness.

Please refer to step 910. Taking the third figure as an example, the original grayscale brightness of the pixel monochrome 100A display is set to the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome grayscale. Brightness C3. The predetermined grayscale brightness W displayed by the first pixel 110 is the average value of the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome grayscale brightness C3. The grayscale brightness A displayed by the pixel unit 100A is A = C 1 × ( n -1) / n + W / n . Next, in step 920, it is determined whether the brightness of the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome grayscale brightness C3 is greater than or equal to W / n. If the luminance of the first monochrome grayscale C1, the luminance of the second monochrome grayscale C2, and the luminance of the third monochrome grayscale C3 are greater than or equal to W / n, step 930 is executed, and the first gray displayed by the second pixel 120 is The order brightness is L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) / 3 ( n -1). In step 930, for example, when the original grayscale brightness C of red is L60, the first grayscale brightness L of red is L40; when the original grayscale brightness C of green is L120, the greenness first The grayscale brightness L is L120; when the original grayscale brightness C of blue is L180, the first grayscale brightness L of blue is L200.

If one of the first monochrome grayscale brightness C1, the second monochrome grayscale brightness C2, and the third monochrome grayscale brightness C3 is less than W / n, step 940 is performed, and the second displayed by the second pixel 120 is the second The grayscale brightness is L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) ( n +1) / 6 n ( n -1). In step 940, for example, when the original grayscale brightness C of red is L20, the second grayscale brightness L of red is L6; when the original grayscale brightness C of green is L120, the second green scale The grayscale brightness L is L139; when the original grayscale brightness C of blue is L160, the second grayscale brightness L of blue is L192.

Subsequently, in step 950, the grayscale brightness B displayed by the pixel unit 100A is corrected to be B = L × ( n -1) / n + W / n . In step 950, for example, when the first grayscale brightness L of red is L40, the true grayscale brightness B of red is L60; when the first grayscale brightness L of green is L120, the trueness of green The grayscale luminance B is L120; when the first grayscale luminance L of blue is L200, the true grayscale luminance B of blue is L180. It should be noted that please refer to FIG. 3 and FIG. 4 together. In the above steps, the red, green, or blue displayed by the second pixel 120 of the pixel unit 100A can be adopted, but not limited to the field sequential method. For illustration, taking the fourth picture as an example, in a picture period frame1, the second pixel 120 may sequentially display red, green, or blue during the periods T1, T2, and T3 (the display order of colors is not limited to this, Depending on the actual needs), because the time of the frame period frame1 is extremely short, from the perspective of the viewer, you will see a mix of red, green, or blue. From this, it can be seen that after the above correction, the pixel unit 100A The whole is able to display the correct grayscale brightness.

Those with ordinary knowledge in the technical field should understand that the steps in the display methods 700, 800, and 900 are named according to the functions they perform, only to make the technology in this case more obvious and understandable, not to limit these steps. . Integrating each step into the same step or splitting it into multiple steps, or changing any step to another step for execution, still belongs to the embodiments of the present disclosure.

It can be known from the foregoing embodiments of the present invention that the application of the present invention has the following advantages. The embodiments of the present invention provide a pixel unit and a display method to improve the problem that users will see the phenomenon of color separation when viewing a display device using the field sequential method, which will affect the user's perception.

Although the above embodiments disclose specific examples of the present invention, they are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains should not deviate from the principles and spirit of the present invention. Various changes and modifications can be made to it, so the scope of protection of the present invention shall be defined by the scope of the accompanying patent application.

Claims (11)

A pixel unit includes: a first pixel for receiving an AC voltage source with a reference voltage to display a predetermined gray level brightness, wherein the first pixel is coupled to a power line or a data Line, the power line or the data line provides the AC voltage source with a reference voltage; and a second pixel to receive a data signal, wherein the update frequency of the AC voltage source is less than the update frequency of the data signal. The pixel unit according to claim 1, wherein the update frequency of the data signal is an integer multiple of the update frequency of the AC voltage source. The pixel unit according to claim 1 or 2, wherein the first pixel is coupled to a first scan line, and the second pixel is coupled to a second scan line. The pixel unit according to claim 3, wherein the number of enable times of the scan signal provided by the second scan line is greater than the number of enable times of the scan signal provided by the first scan line in a frame period. The pixel unit according to claim 1, wherein the area of the first pixel and the second pixel respectively occupy 1 / n and (n-1) / n of the area of the pixel unit, where n is Positive integer. A display method is applied to a pixel unit according to claim 1, wherein an area ratio of the first pixel to the second pixel is 1: (n-1), (n-1) is positive An integer, wherein the image display method includes: setting an original grayscale brightness displayed by the pixel unit; determining whether the original grayscale brightness is greater than or equal to a ratio of the predetermined grayscale brightness to n of the first pixel display; if the The original grayscale brightness is greater than or equal to the ratio, and a first grayscale brightness is displayed by the second pixel according to the predetermined grayscale brightness; and if the original grayscale brightness is less than the ratio, the predetermined grayscale brightness is The second pixel displays a second grayscale brightness. The display method according to claim 6, wherein if the original grayscale brightness is greater than or equal to the ratio, the first grayscale brightness displayed by the second pixel is obtained by the following formula: L = ( C × n- W ) / ( n -1) where L is the first grayscale brightness, C is the original grayscale brightness, and W is the predetermined grayscale brightness. The display method according to claim 6, wherein if the original grayscale brightness is smaller than the ratio, the second grayscale brightness displayed by the second pixel is obtained by the following formula: L = ( C × n - W ) / ( n -1) + W / 2 n where L is the second grayscale brightness, C is the original grayscale brightness, and W is the predetermined grayscale brightness. The display method according to claim 6, wherein setting the original grayscale brightness displayed by the pixel unit includes: setting the original grayscale brightness of the pixel monochrome display to be a first monochrome grayscale brightness, a second Monochrome grayscale brightness, a third monochrome grayscale brightness; wherein the predetermined grayscale brightness of the first pixel display is the first monochrome grayscale brightness, the second monochrome grayscale brightness, the first The average of three monochromatic grayscale brightness. The display method according to claim 9, wherein if the original grayscale brightness is greater than or equal to the ratio, displaying the first grayscale brightness by the second pixel includes: if the first monochrome grayscale brightness, the first The two monochrome grayscale brightnesses and the third monochrome grayscale brightness are greater than or equal to the ratio, and the first grayscale brightness displayed by the second pixel is obtained by the following formula: L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) / 3 ( n -1) where L is the first grayscale brightness, C1 is the first monochrome grayscale brightness, and C2 is the second monochrome grayscale Level brightness, C3 is the third monochrome grayscale brightness. The display method according to claim 9, wherein if the original grayscale brightness is greater than or equal to the ratio, displaying the second grayscale brightness by the second pixel includes: if the first monochrome grayscale brightness, the first One of the two monochrome grayscale brightnesses and the third monochrome grayscale brightness is less than the ratio, and the second grayscale brightness displayed by the second pixel is obtained by the following formula: L = C 1 × n / ( n -1)-( C 1+ C 2+ C 3) ( n +1) / 6 n ( n -1) where L is the second grayscale brightness, and C1 is the first monochrome grayscale brightness, C2 is the second monochrome grayscale brightness, and C3 is the third monochrome grayscale brightness.