WO2012171500A1

WO2012171500A1 - Color display screen and display method thereof

Info

Publication number: WO2012171500A1
Application number: PCT/CN2012/077059
Authority: WO
Inventors: 顾晶
Original assignee: 杨建军
Priority date: 2011-06-17
Filing date: 2012-06-18
Publication date: 2012-12-20
Also published as: CN102243828A

Abstract

A color display screen and a display method thereof. The color display screen comprises a plurality of repeat display units, and each repeat display unit is a 2 X 4 sub-pixel array. Each line in the sub-pixel array comprises four sub pixels: sub pixel R, sub pixel G, sub pixel B and sub pixel W. Two sub pixels in a same column in the sub-pixel array are different, and a same column in the sub-pixel array only contains the sub pixel G and the sub pixel B or only contains the sub pixel R and the sub pixel W. This configuration improves the display effects of the color display screen and enhances the user experience.

Description

The present invention claims the priority of the Chinese patent application filed on June 17, 2011 by the Chinese Patent Office, the application number is 201110169143.1, and the invention name is "a color display screen and its display method". The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of display, and more particularly to a color display screen and a display method thereof. Background of the invention

In the prior art color display screen, one display unit (for example, a pixel point) generally includes three different color sub-pixels of red (R), green (G), and blue (B), and is controlled by a certain pixel. The three sub-pixels on the point correspond to the size of the three color components R, G, B, etc., and the color and brightness displayed by the pixel can be controlled. Therefore, the above color display screen can be referred to as an RGB display screen. However, the brightness of the pixel points in the above RGB display screen generally depends only on the average value of the brightness of each sub-pixel, so the brightness of the above RGB display screen is generally not high, and the power consumption is high.

In response to the above problems, an RGBW display screen has been proposed in the prior art. The display screen is constructed of an array of repeating display units. In the repeated display unit, four seed pixels of red (R), green (G), blue (B), and white (W) are included. Figure 1 is a schematic diagram of a repeating display unit in the prior art. As shown in Fig. 1, in the prior art repeat display unit 11, 2 x 4 sub-pixels are included, and each sub-pixel is one of the above-described four-sub-pixels. Since the above repeated display unit has white (W) color sub-pixels, the brightness of the display screen can be effectively improved, and the power consumption of the display screen can be reduced.

However, studies have shown that the human eye is green and yellow in addition to white indicating brightness. More sensitive, in the above repeated display unit, the G sub-pixel and the W sub-pixel are all in the same column, and the R sub-pixel and the B sub-pixel are also in the same column, and are arranged at intervals, so The visual illusion of alternating light and dark is caused on the color display screen using the above repeated display unit, thereby adversely affecting the display effect of the color display screen and reducing the user experience. Similarly, when the R sub-pixel and the G sub-pixel in the repeated display unit are all in the same column, yellow stripes which are sensitive to the human eye will be formed on the color display screen using the above-mentioned repeated display unit, thereby also The display effect of the color display has an adverse effect. Summary of the invention

The present invention provides a color display screen and a display method thereof, thereby improving the display effect of the color display panel.

In order to achieve the above object, the technical solution in the present invention is implemented as follows:

A color display that includes:

Multiple repeating display units;

The repeating display unit is a 2 x 4 sub-pixel array; each sub-pixel array includes four sub-pixels: R sub-pixel, G sub-pixel, B sub-pixel, and W sub-pixel; The two sub-pixels in the same column in the array are different, and only the G sub-pixel and the B sub-pixel are included in the same column in the sub-pixel array, or only the R sub-pixel and the W sub-pixel are included;

The R sub-pixel is a red sub-pixel, the G sub-pixel is a green sub-pixel, the W sub-pixel is a white sub-pixel, and the B sub-pixel is a blue sub-pixel.

The arrangement of each sub-pixel in the sub-pixel array is any one of the following arrangements:

GWRBWGRBRGBWBWRGBRWG, RBWG, WBGR, GRWB, GWBRWGBRRGWBBWGRBRGW, RBGW, WBRG, GRBW,

R W W

W R W, R, W B

R B G G R W

W G B, B, W R

B W B B G R

G, G, BW

The four sub-pixels in each row of the sub-pixel array constitute two different pixel points, and each pixel point includes two different sub-pixels.

In the same sub-pixel array, the first and second sub-pixels in the first row of the sub-pixel array are combined into a first pixel, and the third and fourth sub-pixels in the first row are formed into a second pixel. The first and second sub-pixels in the second row constitute a third pixel, and the third and fourth sub-pixels in the second row constitute a fourth pixel;

The first pixel in the sub-pixel array is different from the second and third sub-pixels, and the fourth pixel is different from the second and third sub-pixels.

In the same sub-pixel array:

The first pixel is the same as the fourth pixel, and the second pixel is the same as the third pixel; Or the first pixel and the fourth pixel are mirror images of each other, and the second pixel and the third pixel are mirror images of each other;

Or the first pixel and the third pixel are mirror images of each other, and the second pixel and the fourth pixel are mirror images of each other;

The two pixel points are mirror images of each other: the first sub-pixel and the second sub-pixel of one pixel are respectively the same as the second sub-pixel and the first sub-pixel of the other pixel.

The present invention also provides a display method of a color display screen, the method comprising: decomposing three color components in display signals of respective pixel points of the color display screen into corresponding four color components according to a preset decomposition method; Wherein the three color components are 1,

G and B components; the four color components are R1, G1, B1, and W1 components corresponding to R, G, B, and W subpixels in the repeated display unit;

Setting the average brightness of the current pixel to be equal to the average brightness of the 1, G, B components in the display signal thereof;

Selecting M neighboring pixel points closest to the current pixel point, and obtaining ratios of two decomposed four color components corresponding to two sub-pixels of each selected adjacent pixel point; calculating the above M ratios a median of ratios of two decomposed four color components corresponding to two subpixels in the current pixel, and setting a chroma of the current pixel to the median; wherein, the M is non-negative Integer

The final values of the two four color components corresponding to the two subpixels in the current pixel are determined according to the average luminance and chrominance of the current pixel.

Decomposing the three color components in the display signals of the respective pixels of the color display screen into corresponding four color components according to the preset decomposition method includes:

For the current pixel, a correction value is determined according to the R, G, and B components in the display signal of the current pixel and the preset ratio N, and the correction value JC is greater than or equal to a minimum value among the R, G, and B components;

Subtracting a correction value from the R, G, and B components in the display signal of the current pixel, and subtracting the R, G, and B components after the correction value as the 1st, G, and B sub-scores respectively Four color components R1, G1 and B1 corresponding to the pixels;

The four-color component W1 corresponding to the W sub-pixel in the current pixel is set to be three times the correction value JC;

The ratio N is the sum of two decomposed four color components corresponding to two subpixels in the pixel and the other two decomposed four color components of the four decomposed four color components. Ratio of sums;

The correction value is a difference between the R, G, and B components and the corresponding decomposed R1, G1, and B1 components, and is one third of the decomposed W1 component.

The making the positive value JC greater than or equal to the minimum of the 1 , G, B components includes:

If the initial value of JC is obtained from the R, G, and B components in the display signal of the current pixel and the preset ratio N. If the value is greater than the minimum value y of the 1st, G, and B components, the result is the final value of the correction value;

If 0 < . y , then will be described. As the final value of the correction value X; if . 0, then the _y is taken as the final value of the correction value X.

The value of N is 1.

The value of M is any integer from 0 to 8.

In summary, the present invention provides a color display screen and a display method thereof. The color display screen includes a plurality of repeating display units, wherein the repeating display unit includes a 2 x 4 sub-pixel array, and each sub-pixel array includes four sub-pixels: R sub-pixel, G sub-pixel a pixel, a B sub-pixel, and a W sub-pixel, and only the G sub-pixel and the B sub-pixel are included in the same column in the sub-pixel array, or only the R sub-pixel and the W sub-pixel are included, thereby The two sub-pixels G and W in the color display are not in the same column, and the two sub-pixels R and B are not in the same column, and the two sub-pixels R and G are not in the same column, thereby improving the display effect of the color display. , to improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a repeating display unit in the prior art.

2 is a schematic diagram of a sub-pixel arrangement in a sub-pixel array in the present invention. FIG. 3 is a schematic diagram of a pixel point arrangement manner in a sub-pixel array in the present invention. 4 is a schematic view showing a display method of a color display screen in the present invention.

Figure 5 is a schematic flow chart of a decomposition method in the present invention.

Fig. 6 is a view showing an example of a method of selecting M adjacent pixel points in the present invention. Mode for carrying out the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

In the technical solution of the present invention, a color display screen and a display method thereof are proposed. The color display screen includes a plurality of repeating display units; the repeating display unit is a 2 x 4 sub-pixel array; each sub-pixel array includes four sub-pixels: R sub-pixel, G sub-pixel, B sub-pixels and W sub-pixels; two sub-pixels in the same column in the sub-pixel array are different, and only the G sub-pixel and the B sub-pixel are included in the same column in the sub-pixel array, or only the R sub-pixel is included Pixels and W sub-pixels.

2 is a schematic diagram of a sub-pixel arrangement of a sub-pixel array in the present invention. As shown in FIG. 2, in the technical solution of the present invention, the color display screen includes multiple repeated displays. And the repeating display unit is a 2 x 4 sub-pixel array 21. The first row and the second row of the sub-pixel array 21 include four sub-pixels: R sub-pixel, G sub-pixel, B sub-pixel, and W sub-pixel, and in the first and third columns of the sub-pixel array, All include only R sub-pixels and W sub-pixels, and in the second and fourth columns of the sub-pixel array, only G sub-pixels and B sub-pixels are included.

Therefore, in the technical solution of the present invention, there are many ways of arranging the sub-pixels in the sub-pixel array (ie, the repeated display unit). Moreover, since two sub-pixels in the same column in the sub-pixel array are different, and only the G sub-pixel and the B sub-pixel are included in the same column in the sub-pixel array, or only the R sub-pixel and the W sub-pixel are included. Therefore, when the arrangement of each sub-pixel in a row in the sub-pixel array is determined, the arrangement of the sub-pixels in another row of the sub-pixel array can also be directly derived, and thus will be determined accordingly. .

For example, as shown in FIG. 2, when the arrangement of each sub-pixel in the first row of the sub-pixel array is determined as: GRWB, since the first sub-pixel in the first row of the sub-pixel array is a G sub-pixel, Therefore, the first sub-pixel in the second row of the sub-pixel array is necessarily a B sub-pixel; when the second sub-pixel in the first row of the sub-pixel array is an R sub-pixel, so in the second row of the sub-pixel array The second sub-pixel is necessarily a W sub-pixel; ..., and so on, it can be known that the arrangement of each sub-pixel in the second row of the sub-pixel array is necessarily: BWRG, as shown in FIG. 2 Show.

In addition, when the first row of the sub-pixel array includes four sub-pixels of 1, G, B, and W, there are 24 possible arrangements. Therefore, in the technical solution of the present invention, each sub-pixel array There are also 24 ways to arrange pixels, which are:

GWRBWGRBRGBWBWRGBRWG, RBWG, WBGR, GRWB, GWBRWGBRRGWBBWGRBRGW, RBGW, WBRG, GRBW,

R W W

W R W, R, W B

R B G G R W

W G B, B, W R

B W B B G R

G, G, BW

In the technical solution of the present invention, the arrangement of each sub-pixel in the sub-pixel array may be any one of the 24 arrangements described above.

According to the arrangement manner of each sub-pixel in the sub-pixel array, since the same column in the sub-pixel array includes only G sub-pixels and B sub-pixels, or only R sub-pixels and W sub-pixels, In the pixel array, the two sub-pixels G and W are not necessarily in the same column, and the two sub-pixels R and B are not necessarily in the same column, and the two sub-pixels R and G are not necessarily in the same column. Therefore, in the color display panel composed of the above-mentioned repeated display unit in the present invention, the visual illusion of alternating light and dark will not appear, and yellow stripes which are sensitive to the human eye will not be formed on the color display screen. Thereby, the display effect of the color display can be greatly improved, and the user experience is improved.

In addition, in the color display screen of the prior art, each pixel on the display screen is composed of three sub-pixels of three colors of red, green and blue. Pixels having the above structure can The brightness of the pixel is fully expressed by the average of the brightness of the three sub-pixels, and the chromaticity of the pixel is expressed by the ratio of the three sub-pixels. For example, if a pixel is pink and its red, green, and blue sub-pixels have values of 240, 120, and 180, respectively, the brightness of the pixel will be (240 + 120 + 180) / 3 = 180, and The chromaticity of this pixel can be expressed as R: G: B = 4: 2: 3. However, since the human eye is more sensitive to brightness than to color, when the human eye can discern small dots, it does not necessarily recognize the color represented by the point. Therefore, when the pixel on the display is small enough, it is not necessary to accurately indicate the color of the pixel.

In order to further improve the display effect of the color display screen, in the color display panel of the present invention, each pixel point includes only two different sub-pixels, and therefore, in the sub-pixel array in the above-mentioned repeated display unit, The four sub-pixels in each row of the sub-pixel array constitute two different pixel points, and each pixel point includes two different sub-pixels.

For example, in the technical solution of the present invention, in the same sub-pixel array, the first and second sub-pixels in the first row of the sub-pixel array may be composed of the first pixel, and the third and fourth rows in the first row. The sub-pixels constitute a second pixel, the first and second sub-pixels in the second row form a third pixel, and the third and fourth sub-pixels in the second row constitute a fourth pixel.

FIG. 3 is a schematic diagram of a pixel point arrangement manner in a sub-pixel array in the present invention. As shown in FIG. 3, each sub-pixel in the sub-pixel array 21 has an arrangement as described below:

G R W B B W R G

When each sub-pixel in the sub-pixel array 21 has the arrangement as described above, the first pixel 31 in the sub-pixel array 21 includes G and R sub-pixels, and the second pixel 32 includes W and B sub-pixels. The third pixel 33 includes B and W sub-pixels, and the fourth pixel 34 includes R and G sub-pixels.

In addition, since there are 24 types of sub-pixels arranged in the sub-pixel array, Therefore, the pixel points that may appear in the sub-pixel array will have 12 types as follows:

G W, G R, G B, W G, W R, W B, R G, R W, R B, B G, B W, B R.

Wherein, G W indicates that the pixel includes two sub-pixels of G and W, and the first sub-pixel of the pixel is a G sub-pixel, and the second sub-pixel is a W sub-pixel. Other pixels can be deduced by analogy.

According to the arrangement of the 24 sub-pixels in the sub-pixel array, it can be directly inferred that in the technical solution of the present invention, two sub-pixels in the same row of the sub-pixel array must include R sub-pixels and G sub-pixels. Four sub-pixels, such as a pixel, a B sub-pixel, and a W sub-pixel, wherein the first pixel in the sub-pixel array is different from the second and third sub-pixels, and the fourth pixel is different from the second and third sub-pixels.

In addition, in the preferred embodiment of the present invention, in the same sub-pixel array, the first pixel point may be the same as the fourth pixel point, and the second pixel point may be the same as the third pixel point; or, may be the first The pixel point and the fourth pixel point are mirror images of each other, and the second pixel point and the third pixel point are mirror images of each other; or, the first pixel point and the third pixel point are mutually mirrored, and the second pixel point and the fourth pixel point are The pixels are mirror images of each other.

The mirroring of the two pixels is: the first sub-pixel and the second sub-pixel of one pixel are the same as the second sub-pixel and the first sub-pixel of the other pixel, respectively. For example, when the first sub-pixel of one pixel is a G sub-pixel, the second sub-pixel is a W sub-pixel, and the first sub-pixel of the other pixel is a W sub-pixel, and the second sub-pixel is In the case of a G sub-pixel, the two pixels are mirror images of each other, but the two pixels are not the same pixel.

It can be seen from the above that in the technical solution of the present invention, each pixel in the color display screen will only include two sub-pixels of different colors, instead of including three sub-pixels of R, G, and B, so the present invention The area occupied by the pixels can be smaller than the area of the conventional pixel. In the same area of the color display, a larger number of pixels can be arranged, thereby effectively improving the display resolution of the color display, so that the color displayed by the formed color display is clearer, more realistic, richer, and more suitable for people. The visual enjoyment improves the display effect of the color display, improves the user experience, and can also greatly save the energy consumption of the color display.

In addition, when using the color display screen provided by the present invention, since each row of the sub-pixel array will include two different pixel points (including four different sub-pixels such as R, G, B, W, etc.) And each pixel includes only two sub-pixels of different colors, and the display signal of the RGB format is for pixels including three sub-pixels of R, G, and B. Therefore, in the use of the color display provided in the present invention, it is also necessary to convert the display signal of the conventional RGB format into a signal suitable for the RGWB format used for the color display provided in the present invention.

Therefore, in the technical solution of the present invention, based on the color display provided above, a display method of the color display screen is also provided. Hereinafter, the technical solution of the present invention will be described by taking a conversion process of a display signal of a certain pixel (for example, a current pixel) as an example.

4 is a schematic view showing a display method of a color display screen in the present invention. As shown in FIG. 4, the display method of the color display screen in the present invention may include the following steps:

Step 401: Decompose the three color components in the display signals of the respective pixels of the color display screen into corresponding four color components according to a preset decomposition method; wherein the three color components are R, G, and B components; The four color components are R1, G1, B1, and W1 components corresponding to the R, G, B, and W sub-pixels in the repeated display unit.

In the conventional color display, each pixel includes three sub-pixels of R, G, and B. Therefore, the display signal of each pixel has three three-color components such as an R component, a G component, and a B component. And the above three three color components respectively correspond to three sub-pixels of R, G, and B in the pixel.

In the color display screen of the technical solution of the present invention, there are a total of 4 seed pixels: R, G, B, and W, and each pixel includes only two different sub-pixels. In order to display the corresponding color on the color display screen according to the display signal, in this step, the 1, G, and B components in the display signals of the respective pixel points need to be respectively decomposed into corresponding four color components R1, G1, and Wl; wherein the decomposed four color components R1, G1, Bl, and Wl correspond to the 1, G, B, and W sub-pixels in the repeated display unit, respectively.

Therefore, in the technical solution of the present invention, the corresponding decomposition method may be preset according to the actual application, and then the R, G, and B components in the display signals of the respective pixel points are respectively decomposed into corresponding according to the preset decomposition method. Four four-color components Rl, Gl, Bl, and WL

In the actual application process, various decomposition methods can be preset and used according to actual needs. The technical solution of the present invention will be further described below by taking one of the decomposition methods as an example.

Figure 5 is a schematic flow chart of a decomposition method in the present invention. As shown in FIG. 5, in a specific embodiment of the present invention, taking the current pixel as an example, the R, G, and B components in the display signal of each pixel are respectively decomposed into corresponding four four-color components R1. The decomposition methods of Gl, Bl, and Wl may include the following steps:

Step 501: For the current pixel, a correction value may be determined according to the R, G, and B components in the display signal of the current pixel and the preset ratio N.

The ratio N is the sum of two decomposed four color components corresponding to two subpixels in the pixel and the other two decomposed four color components of the four decomposed four color components. The ratio of the sum.

For example, when two sub-pixels in the pixel are R and G sub-pixels, the two decomposed four-color components corresponding to the R and G sub-pixels are R1 and G1, respectively, and the other two decomposed four. The color components are B1 and W1, then the ratio N is: Rl + Gl _Ar

=N ( l )

Bl + Wl

In addition, the above ratio N is a natural number, and the value of N can be set in advance according to the actual application. For example, you can set N=l. In the technical solution of the present invention, when the value of N is set to 1, the brightness between adjacent pixel points in the color display screen of the present invention can be made relatively close, thereby enhancing the display effect of the color display screen.

In addition, in the technical solution of the present invention, the correction value JC is a difference between the R, G, and B components and the corresponding decomposed R1, G1, and Bl components, and is the decomposed One-third of the W1 component. That is, X above satisfies the formula:

WI

RR\ = BB\ = GG\ =— = x (2) Therefore, when two sub-pixels in the pixel are R and G sub-pixels, the above formula (1) and formula (2) can be solved in parallel. Can be solved:

R + G- NB

x = ( 3 )

2(N + l) and when N=l in the above formula (3), there are:

X = ( R+G-B ) /4 (4)

When two sub-pixels in the pixel are other sub-pixels, the same can be said. Therefore, according to the above formula (3), it is understood that the correction value can be determined only by the R, G, and B components in the display signal of the pixel and the preset ratio N.

In addition, in the technical solution of the present invention, in order to further obtain a good display effect, it may further be required that the above-mentioned correction value X must be greater than or equal to any one of the R, G, and B components, that is, the correction value. JC must be greater than or equal to the minimum of the R, G, B components such that no negative numbers are present in the resulting four four color components.

For example, after the initial value (which can be recorded as ) of the correction value JC is obtained from the R, G, and B components in the display signal of the current pixel and the preset ratio N, it is also possible to The value of the 1, G, and B components, and the initial value X of the correction value JC. The adjustment is made to obtain the final value of the correction value JC (which can be denoted as _F ).

Specifically, when the initial value of the correction value JC is obtained according to the above formula (3). After that, it can be based on the initial value X of the correction value. Perform the following processing to get the final value of the correction value x _f

1) If the initial value of JC. More than the minimum value y=min ( R, G, B ) of the 1 , G , and B components, then =} , that is, the minimum value among the 1 , G , and B components is taken as the final value of the correction value JC value.

Specifically, since when the final value of the correction value is greater than the minimum value y of the R, G, and B components, a negative number is generated in the four four color components obtained by the decomposition, and therefore, The final value of the correction value JC is set to a minimum value among the R, G, and B components

2) If 0 <. y, then _f =. , that is, the initial value of the correction value JC. As the final value of the correction value X;

3) If. 0, then _f = _y, that is, the minimum value among the 1st, G, and B components) is taken as the final value of the correction value X.

In the technical solution of the present invention, after determining the correction value JC, subsequent steps 502 and 503 may be performed, that is, the R, G, and B components in the display signal of the pixel point are decomposed according to the determined correction value X. It is four four-color components R1, G1, Bl, and W1 corresponding to the pixel.

Step 502: Subtract a correction value from the R, G, and B components in the display signal of the current pixel, and subtract the R, G, and B components after the correction value as R and G respectively in the current pixel. Four color components R1, G1, and Bl corresponding to the B sub-pixels.

Step 503, setting the four-color component W1 corresponding to the W sub-pixel in the current pixel to be three times the correction value JC, that is, 3 . Through the above steps 501 ~ 503, you can click any pixel on the color display.

The three color components in the display signal (e.g., the current pixel point) are respectively decomposed into corresponding four color components.

The above steps 501 to 503 will be exemplified in the following embodiments: Embodiment 1

When the R, G, and B components of a pixel are 250, 150, and 200, respectively, and N=l,

According to the above formula (4), you can get: =(R+G-B)/4=50.

Since 3=

Then, according to the value of JC above, the decomposed Rl, Gl, Bl and Wl components can be obtained:

Rl = R - = 250 - 50 = 200; Gl = G - = 150 - 50 = 100; Bl = B - = 200 - 50 = 150; Wl = 3 = 3 x 50 = 150. Embodiment 2

When the R, G, and B components of a pixel are 250, 10, and 200, respectively, and N=l,

According to the above formula (4), you can get: =(R+G-B)/4=15.

due to

y = 10. Then, according to the above JC value, the decomposed Rl, Gl, Bl and Wl components can be obtained: Rl = R - = 250 - 10 = 240; Gl = G - = 10-10 = 0; Bl = B - = 200-10=190; Wl=3 = 3 x 50=30. Embodiment 3

When the R, G, and B components of a certain pixel point are 10, 30, and 200, respectively, and N=l, according to the above formula (4), _Q = (R + GB) / 4 = -40.

Since y=min (R, G, B) = 10, ₀ < 0, thus obtaining: JC = =); = 10. Then, according to the above JC value, the decomposed Rl, Gl, Bl and Wl components can be obtained: R1=R-=10-10=0; Gl=G-=30-10=20; Bl=B-= 200-10=190;

Wl=3 = 3 x 50=30. It can be seen from the above that through the above steps 501 to 503, the three color components 1 , G and B components in the display signals of the respective pixel points of the color display screen can be respectively decomposed into corresponding four four color components R1, G1, and Bl. And Wl, thereby implementing the above step 401.

After the three color components R, G, and B components in the display signals of the respective pixels of the color display screen are respectively decomposed into the corresponding four four color components R1, G1, Bl, and Wl, the respective pixel points can be decomposed. The four color components are stored in corresponding storage devices or storage modules, and then each pixel in the color display screen is sequentially selected, and the final value of the four color components of each pixel point is calculated.

The final value of the four color components of the current pixel point is calculated by taking a pixel point (which may be referred to as a current pixel point) on the color display as an example.

Step 402: Set the average brightness of the current pixel to be equal to the average brightness of the R, G, and B components in the display signal.

In this step, the average luminance of the current pixel is set such that the average luminance of the pixel is equal to the average luminance of the 1, G, and B components in the display signal.

For example, if the R, G, and B components in the display signal of the pixel are 240, 120, and 150, respectively, the average luminance A of the pixel is: A = ( R+G+B ) /3= ( 240+ 120+150) /3=170.

Step 403: Select M neighboring pixel points that are closest to the current pixel point, and obtain a ratio of two decomposed four color components corresponding to two sub-pixels in each selected adjacent pixel point; The M ratios are the median of the ratio of the two decomposed four color components corresponding to the two subpixels in the current pixel, and the chromaticity of the current pixel is set to the median. In this step, M neighboring pixel points that are closest to each other are selected from the pixel points adjacent to the current pixel point, wherein the value of M can be set in advance. For example, in a preferred embodiment of the present invention, the value of the M may be any integer from 0 to 8, or may be other non-negative integers. 6 is a diagram showing an example of a method for selecting M adjacent pixel points in the present invention. As shown in FIG. 6, when M is any integer from 0 to 4, the selected and current pixel points are 0. The nearest M adjacent pixels may be any M of the 4 adjacent pixels closest to the current pixel 0; for example, when M is 4, the selected and current pixels 0 The nearest 4 adjacent pixels are Al, A2, A3, and A4; and when M is any integer from 5 to 8, the selected M phases closest to the current pixel 0 are selected. The neighboring pixel may be any M of the 8 adjacent pixels closest to the current pixel 0; for example, when M is 8, the selected 8 closest to the current pixel 0 are selected. The adjacent pixels are Al, A2, A3, A4, Bl, B2, B3, and B4.

Since the R, G, and B components in the display signal of each pixel point are decomposed into four four-color components such as R1, G1, B1, and W1 in step 401, and two sub-pixels in each pixel point respectively correspond to The two decomposed four color components are obtained by calculation or the like. The ratio of the two decomposed four color components corresponding to the two subpixels in each selected adjacent pixel point can be obtained by calculation or the like. For example, when two sub-pixels of a selected adjacent pixel are R and G sub-pixels, the two decomposed four-color components corresponding to the R and G sub-pixels are R1 and G1, respectively. The ratio of R1 and G1 described above can be known by calculation.

After the M ratios are obtained, the median of the ratio of the M ratios and the two decomposed four color components corresponding to the two subpixels in the current pixel may be calculated. In the technical solution of the present invention, the median may use the definition of the median in the prior art: a set of data is arranged in order from small to large (or large to small), in the middle. A number of positions (or the average of the two most intermediate data). Therefore, if the total number of data in a set of data is an odd number, the data in the set of data may be first arranged in order of small to large (or large to small), and then the most intermediate data is taken as medium. Number of digits. For example, the median of an array (2, 3, 4, 5, 6) is 4.

If the total number of data in a set of data is even, you can first sort each data in the set of data from small to large (or large to small), and then take the average of the two most intermediate data. For the median. For example, the median of an array (2, 3, 4, 5, 6, 7) is: (4+5) /2=4.5.

After obtaining the above median, the chrominance S of the current pixel can be set to the median.

In particular, when the value of M is 0, it indicates that the number of selected adjacent pixels is 0. At this time, the median is the two corresponding to the two sub-pixels in the current pixel. The ratio of the four color components after decomposition. Therefore, the chromaticity S of the current pixel point can be directly set as the ratio of the two decomposed four color components corresponding to the two sub-pixels in the current pixel point.

It should be noted that, in the technical solution of the present invention, the foregoing steps 402 and 403 may be performed simultaneously, or may be performed in a predetermined execution order.

Step 404: Determine, according to the average brightness and chromaticity of the current pixel, a final value of two four color components corresponding to two sub-pixels in the current pixel.

Specifically, after the average brightness A and the chromaticity S of the current pixel point are obtained through the above steps 402 and 403, two of the current pixel points can be determined according to the average brightness A and the chromaticity S of the current pixel point. The final value of the two four color components corresponding to the pixel, that is, the average value of the final values of the two four color components corresponding to the two subpixels in the current pixel is the average brightness of the current pixel, and The ratio of the final values of the two four color components is such that the brightness of the current pixel point.

For example, if two sub-pixels in the current pixel are respectively R sub-pixels and G sub-pixels, the final values of the four color components corresponding to the two sub-pixels may be set to R0. And G0. Since the average luminance A and the chrominance S of the current pixel point have been determined, the final values of the four color components corresponding to the two sub-pixels of the current pixel point can also be determined according to the above A and S. For example, if the average brightness of the current pixel is A = 150 and the chromaticity of the current pixel is S = 2: 1 , the four color components corresponding to the two sub-pixels of the current pixel necessarily satisfy the formula as described below. :

( R0 + G0 ) /2 = 150, R0: GO = 2: 1

Solve the above equations to get: R0 = 200, GO = 100.

It can be seen from the above that through the above steps 401 ~ 404, the final value of the four color components corresponding to any pixel on the color display screen can be calculated, so that the display signal of the conventional RGB format corresponding to the pixel point can be obtained. The signal is converted to the RGWB format suitable for use with the color display provided in the present invention. Therefore, according to the method described in the above steps 402-404, the final values of the four color components of each pixel on the color display screen are sequentially calculated until all the pixel points on the color display screen are corresponding. The display signals of the conventional RGB format are converted into signals of the RGWB format suitable for use in the color display provided in the present invention. The specific calculation process will not be described here.

In summary, the above-described color display screen and its display method are proposed in the embodiment of the present invention. In the above color display screen, since the two sub-pixels G and W in the repeated display unit in the color display are not in the same column, the two sub-pixels R and B are not in the same column, and the two sub-pixels R and G are not in In the same column, therefore, the color display screen of the present invention will no longer have visual illusions of alternating light and dark, and will not form yellow stripes which are sensitive to the human eye, thereby greatly improving the display effect of the color display screen. Improve user experience.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

Claim

A color display screen, wherein the color display screen comprises: a plurality of repeating display units;

The color display panel according to claim 1, wherein the arrangement of each sub-pixel in the sub-pixel array is any one of the following arrangements:

G W R B W G R B R G B W B W R G B R W G, R B W G, W B G R, G R W B,

G W B R W G B R R G W B B W G R

B R G W, R B G W, W B R G, G R B W,

G R W B W B G R R B G W B R G W

B W R G, R G B W, W G B R, G W B R,

G R B W W B R G R B W G B R W G B W G R, R G W B, W G R B, G W R B,

GBWRWRGBRWGBBGRW BGRW, RWBG, WRBG, GBWR,

G B R W W R B G R W B G B G W R B G W R, R W G B, W R G B, G B R W.

3. The color display of claim 1 wherein:

4. The color display of claim 3, wherein:

5. A color display screen according to claim 4, wherein in the same sub-pixel array:

The first pixel is the same as the fourth pixel, and the second pixel is the same as the third pixel;

Or the first pixel and the fourth pixel are mirror images of each other, and the second pixel and the third pixel are mirror images of each other;

6. A display method for a color display screen, the method comprising: decomposing three color components in display signals of respective pixel points of a color display screen into corresponding four color components according to a preset decomposition method; Wherein the three color component is 1,

Setting the average brightness of the current pixel to be equal to the average brightness of the R, G, and B components in the display signal thereof;

The method according to claim 6, wherein the decomposing the three color components in the display signals of the respective pixels of the color display screen into corresponding four color components according to the preset decomposition method comprises:

For the current pixel, a correction value is determined according to the R, G, and B components in the display signal of the current pixel and the preset ratio N, and the correction value JC is greater than or equal to the 1 , G, and B components. Minimum value in

Setting the four-color component W1 corresponding to the W sub-pixel in the current pixel to be three times the correction value JC; The ratio Ν is the sum of two decomposed four color components corresponding to two sub-pixels in the pixel and the other two decomposed four color components of the four decomposed four color components. Ratio of sums;

The positive value of the ^ ίι爹 is a difference between the R, G, and B components and the corresponding decomposed R1, G1, and B1 components, and is one third of the decomposed W1 component. .

The method according to claim 7, wherein the determining that the correction value JC is greater than or equal to a minimum value of the 1st, G, and B components comprises:

If 0 < . _y, then it will be. As the final value of the correction value X; if . 0, then the _y is taken as the final value of the correction value X.

9. The method according to claim 7, wherein: the value of N is 1.

The method according to claim 6, wherein the value of M is any integer from 0 to 8.