TWI539425B - Method for rendering images of display - Google Patents

Description

Method of rendering a screen of a display

A method of rendering a picture of a display, in particular, a method for subpixel rendering (SPR) of a picture of an SPR display.

Since users of consumer electronics are increasingly demanding visual effects, the resolution of displays needs to be continuously improved in order to output high-quality images and detailed images. Please refer to Figure 1. 1 is a schematic diagram of a portion of a pixel of a prior art display 100. The display 100 employs a conventional pixel arrangement in which the display 100 includes a plurality of pixels 110, and each of the pixels 110 includes a red sub-pixel 120R, a green sub-pixel 120G, and a blue sub-pixel 120B. However, as the resolution is improved, the aperture ratios of the red sub-pixel 120R, the green sub-pixel 120G, and the blue sub-pixel 120B are also reduced, and the high-resolution panel is provided in the case of the same backlight brightness. It has lower brightness than a non-high resolution panel.

In order to solve this problem of brightness reduction, ClairVoyante of the United States proposed a sub-pixel arrangement called PenTile, which is driven by Sub Pixel Rendering (SPR). The SPR display mainly increases the area of the sub-pixel to increase its aperture ratio, thereby increasing the brightness of the display. Please refer to FIG. 2, which is a schematic diagram of a prior art display 200. The display 200 is an SPR display, and includes a plurality of sub-pixel groups 210 and a plurality of sub-pixel groups 220, wherein the sub-pixel groups 210 and the sub-pixel groups 220 are staggered with each other. Each pixel group 210 includes a red sub-pixel 230R and a green sub-pixel 230G, and each pixel group 220 includes a blue sub-pixel 230B and a green sub-pixel 230G. The area of red sub-pixel 230R is larger than green The area of the color sub-pixel 230G, and the area of the blue sub-pixel 230B is also larger than the area of the green sub-pixel 230G. The sub-pixel groups 210 and 220 play a role similar to the pixel 110 in FIG. 1, however, since the sub-pixel group 210 lacks the blue sub-pixel 230B, and the sub-pixel group 220 lacks the red sub-pixel 230R, the display 200 will render the secondary pixels of each of the pixel groups 210 and 220.

When the display 200 performs sub-pixel rendering, since the sub-pixel group 210 lacks the blue sub-pixel 230B, and the sub-pixel group 220 lacks the red sub-pixel 230R, the blue rendering value of each pixel group 210 is B _D will be assigned to the blue sub-pixel 230B of the adjacent sub-pixel group 220 on the right side thereof, and the red rendering value R _{D of} each pixel group 220 will be assigned to the adjacent sub-pixel group 210 of the right side thereof. Red sub-pixel 230B. In detail, the display 200 receives a plurality of pixel data, and each of the pixel data is used to drive a corresponding sub-pixel group 210 or sub-pixel group 220. Each piece of pixel data has red, green and blue data corresponding to red, green and blue, respectively. When the display 200 performs the rendering of the above sub-pixels, it will be adopted. The rendering matrix is rendered, and the value of the element in the second row of the second column of the rendering matrix represents the ratio of the multiplication of the corresponding color data of the sub-pixel to be rendered, and the value of each other element is Represents the ratio of the color data of the same color that is adjacent to and in the corresponding direction of the sub-pixel group 210 or the sub-pixel group 220. Wherein each element except the element of the second row of the second column in the rendering matrix corresponds to a neighboring sub-pixel group 210 or sub-pixel group 220 of the sub-pixel to be rendered, and the first of the rendering matrix Column first row, first column second row, first column third row, second column first row, second column third row, third column first row, third column second row, and third column The sub-pixel groups corresponding to the elements of the third row are respectively adjacent to the sub-pixels to be rendered, and are located at the upper left, the upper right, the upper right, the left, the right, and the lower left of the sub-pixel to be rendered. Just below and to the bottom right.

How to render the sub-pixel group 210 located in the third row and third row of the display 200 in FIG. 2 will be described below. It is assumed that the red sub-pixel 230R of the primary pixel group 210 and the rendered red data are R ₃₃ and R' ₃₃ respectively, and adjacent thereto are located at the upper left, upper right, lower left and lower right respectively. The red data of the sub-pixel group 210 is divided into R ₂₂ , R ₄₂ , R ₂₄ and R ₄₄ , and the red data of the sub-pixel group 220 adjacent thereto and located directly above, to the left, to the right and directly below Divided into R ₃₂ , R ₂₃ , R ₄₃ and R ₃₄ . Rendering matrix After rendering, R' ₃₃ = 0.5 × R ₂₃ + 0.5 × R ₃₃ , and the sub-pixel group 210 of the third row of the third column receives the red rendering value R _D from the adjacent sub-pixel group 220 located in the left side thereof. 0.5 × R ₂₃ .

However, in the above manner of rendering in a single rendering matrix, when a plurality of driving wafers are used to drive and render the secondary pixels of the display, it is easy to cause color error on the boundary of different driving regions. Please refer to FIG. 3, which is a schematic diagram of another prior art display 300. The display 300 is an SPR display, and includes a plurality of sub-pixel groups 210 and a plurality of sub-pixel groups 220, wherein the sub-pixel groups 210 and the sub-pixel groups 220 are staggered with each other. The display 300 includes an adjacent display area 301 and a display area 302, wherein the display area 301 and the display area 302 are separated by a broken line 303. The display area 301 and the display area 302 are driven and rendered by two different driving chips, and the two driving chips also adopt the above-mentioned rendering matrix when rendering the sub-pixel groups 210 and 220. Rendering. However, no buffer memory is disposed between the two driving chips to share the pixel data received by each other, and the front-end wafer does not process the pixel data in advance, so as to be in the display area 301 and the display area 302. On the boundary, the blue rendering value B _D of the sub-pixel group 210 of the display area 301 and the red rendering value R _D of the sub-pixel group 220 cannot be respectively rendered to the blue sub-picture of the sub-pixel group 220 of the display area 302. The red sub-pixel 230R of the element 230B and the sub-pixel group 210. Therefore, on the boundary between the display area 301 and the display area 302, it is easy to cause color shift and flicker due to insufficient brightness of the blue sub-pixel 230B and the red sub-pixel 230R of the display area 302.

An embodiment of the invention discloses a method for rendering a picture of a display. The display includes a plurality of first pixel groups and a plurality of second pixel groups, and the plurality of first pixel groups are alternately arranged with the plurality of second pixel groups. Each pixel group and each second pixel group each contain at least two colors of sub-pixels, and the color combination of the second pixel of the first pixel group is different from the second color of the second pixel group. The color combination of the prime. The method includes: providing at least one matrix loop, wherein each matrix loop includes at least four rendering matrices, each of the rendering matrices includes a plurality of elements, and each of the elements whose value is greater than zero is used to set a value direction, and the foregoing At least one of the temporally adjacent rendering matrices of the at least one matrix loop has at least one different direction of the value; the display is displayed in different frame periods according to the at least one matrix loop, wherein the two timing phases are The picture of the adjacent frame period is rendered with a rendering matrix that is not identical; and the display displays the picture rendered by the rendering matrix in each frame period.

100, 200, 300, 700, 1300‧‧ display

110, 210, 220‧‧ ‧ pixels

120R, 230R, 330R‧‧‧ Red sub-pixels

120G, 230G, 330G‧‧‧ Green sub-pixels

120B, 230B, 330B‧‧‧Blue sub-pixels

210, 220, 1310, 1320‧‧

301, 302, 701, 702, 1301, 1302‧‧‧ display area

303, 703, 1301‧‧‧ dotted line

330W‧‧‧White sub-pixel

400‧‧‧ screen material

410‧‧‧First data collection

412‧‧‧ pixel data

420‧‧‧Second data collection

500, 800, 1000, 1100‧‧‧ matrix cycle

510 to 540, 810 to 840, 1010 to 1040, 1110 to 1180‧‧‧ rendering matrix

610 to 640, 910 to 940 ‧ ‧ screen

D _R ‧‧‧Red Information

D _G ‧‧‧ green data

D _B ‧‧‧Blue Information

B _D , R _D , G _D , W _D ‧‧‧ rendered values

S1410 to S1430‧‧‧ Process steps

Figure 1 is a schematic illustration of a portion of a pixel of a prior art display.

Figure 2 is a schematic illustration of a prior art display.

Figure 3 is a schematic illustration of another prior art display.

Fig. 4 is a data structure diagram of screen data of a plurality of frame periods received by the display of Fig. 3.

Figure 5 is a schematic diagram of a matrix cycle used by a driving circuit in accordance with an embodiment of the present invention.

Figure 6 is a schematic diagram of the screen displayed by the display of Figure 3 in different frame periods.

Figure 7 is a schematic diagram of a display according to an embodiment of the present invention.

Figure 8 is a schematic diagram of a matrix cycle used by a driving circuit in accordance with an embodiment of the present invention.

Figure 9 is a schematic diagram of the screen displayed by the display of Figure 7 in different frame periods.

Figure 10 is a schematic diagram of a matrix cycle used by a driving circuit in accordance with another embodiment of the present invention.

Figure 11 is a schematic diagram of a matrix cycle used by a driving circuit in accordance with still another embodiment of the present invention.

Figure 12 is a schematic view of a display according to another embodiment of the present invention.

FIG. 13 is a flow chart of a method for rendering a screen of a display according to an embodiment of the present invention.

In an embodiment of the invention, the driving circuit for driving the display areas 301 and 302 of the display 300 performs Subpixel Rendering (SPR) on the display 300 by a plurality of rendering matrices of the matrix loop. Please refer to Figures 3 to 6. 4 is a data structure diagram of the screen data 400 of the plurality of frame periods received by the display 300 of FIG. Figure 5 is a schematic diagram of a matrix cycle 500 used by a driver circuit in accordance with an embodiment of the present invention. Figure 6 is a schematic diagram of the screen displayed by the display 300 of Figure 3 in different frame periods. The picture data 400 of the plurality of frame periods received by the display 300 is shown in FIG. 4 , and each picture material 400 corresponds to a frame period of the display 300 for driving the display 300. The corresponding frame period displays the corresponding picture. The picture material 400 of each frame period includes a plurality of pieces of pixel data 412 of the first data set 410 and a plurality of pieces of pixel data 412 of the second data set 420. The multi-pixel data 412 of the first data set 410 is used to drive the plurality of first-order pixel groups 210 and the plurality of second-order pixel groups 220 of the display area 301 of the display 300, and the multi-strokes of the second data set 220 The prime data 412 is used to drive the plurality of first pixel groups 210 and the plurality of second pixel groups 220 of the display area 302. Each of the pixel data 412 has red data D _R , green data D _G and blue data D _B respectively corresponding to red, green and blue, for driving a corresponding sub-pixel group 210 or sub-pixel group 220. .

In an embodiment of the invention, the red data D _R , the green data D _G and the blue data D _B are respectively gamma values representing the brightness of different color sub-pixels, and can be converted by RGB signals representing gray scales. In detail, if the grayscale values corresponding to red, green, and blue in the received RGB signals are A _R , A _{G ,} and A _B , respectively , the red data D _R , the green data D _{G ,} and the blue data D _B can be obtained by the following equations (1) to (3): D _R = (A _R / 255) ^2.2 (1)

D _G =(A _G /255) ^2.2 (2)

D _B =(A _B /255) ^2.2 (3)

In the present embodiment, multiple rendering matrices 510 through 540 of matrix loop 500 are sequentially used to render multiple frames of display 300. The rendering matrices 510 through 540 of the matrix loop 500 are each a 3 x 3 matrix and each contains a plurality of elements. Each of the elements whose value is greater than zero is used to set a direction of the value, and at least two of the temporally adjacent rendering matrices of the at least one matrix cycle have at least one different direction of value. In detail, the rendering matrices 510 to 540 are sequentially used according to the cyclic sequence illustrated in FIG. 5 to render the frames of the plurality of consecutive frame periods of the display 300, and the above-described looping order is The rendering matrix 510 → rendering matrix 520 → rendering matrix 530 → rendering matrix 540. When the rendering matrix 540 is used to render a picture of a certain frame period of the display 300, the picture of the next frame period of the display 300 is again rendered in the rendering matrix 510. In other words, in terms of the order in which they are used, the rendering matrix 510 is periodically used in a frame interval with the rendering matrices 540 and 520, respectively; the rendering matrix 520 is temporally separated from the rendering matrices 510 and 530 by a frame period, respectively. The rendering matrix 530 is used periodically in a time frame with the rendering matrices 520 and 540, respectively; and the rendering matrices 540 are periodically used in sequence with the rendering matrices 530 and 510, respectively. If the picture rendered by the rendering matrix 510 is the picture 610 in FIG. 6 and the frame period corresponding to the picture 610 is the Nth frame period of the display 300 (N is an integer greater than zero), then The screens rendered by the rendering matrices 520, 530, and 540 will be the screens 620, 630, and 640 in FIG. 6, respectively, and the frame periods corresponding to the screens 620, 630, and 640 will be the (N) of the display 300, respectively. +1) frame cycle, (N+2) frame cycle, and (N+3) frame cycle. It is to be understood that in order to make the reader of the present specification easy to understand the focus of the present invention, the pictures 610 to 640 illustrated in FIG. 6 only show the sub-pixels of the portions on the adjacent boundaries of the display areas 301, 302. Groups 210 and 220, and such a schematic representation does not affect the implementation of the present invention. Moreover, the values of the elements of the second row of the second row of the plurality of rendering matrices 510 through 540 of the matrix loop 500 also represent the sub-pixels to be rendered, as with the rendering matrices described in the prior art above. The ratio of the color data required to be multiplied, and the value of each of the other elements represents the color data of the same color in the sub-pixel group 210 or the sub-pixel group 220 adjacent to and in the corresponding direction. proportion. That is, in each of the rendering matrices 510 to 540, each of the elements other than the elements of the second row of the second column corresponds to a neighboring sub-pixel group 210 or sub-pixel group of the sub-pixel to be rendered. 220, and the first row of the first column of the rendering matrix, the second row of the first column, the third row of the first column, the first row of the second column, the third row of the third column, the first row of the third column, the third The sub-pixel groups corresponding to the elements of the second row and the third row of the column are respectively adjacent to the sub-pixel to be rendered, and are located at the upper left, the upper right, the upper right, and the left of the sub-pixel to be rendered. Square, right, bottom left, right below, and bottom right. The above-mentioned upper left, upper right, upper right, left, right, lower left, right lower, and lower right are relative concepts of the position on the drawing, and are not intended to limit the present invention. In addition, since the rendering matrices 510 to 540 are respectively , , and Therefore, the rendering matrix 510 defines a direction of taking values to the left, the rendering matrices 520 and 540 respectively define the direction of the values of the two right and left values, and the rendering matrix 530 defines a value to the right. The direction of the value. It can be seen that any two of the temporally adjacent rendering matrices of the rendering matrices 510 to 540 have at least one different value direction.

Moreover, with respect to the two rendering matrices of rendering matrices 510 and 520, the difference between the values of the elements in different rendering matrices but in the same position (ie, the same column of peers) does not exceed 0.25. Similarly, in the case of the rendering matrices 520 and 530, the difference between the values of the elements in different rendering matrices but in the same position does not exceed 0.25; and the two matrices 530 and 540 are rendered. In the case of rendering matrices, the difference between the values of the elements in different rendering matrices but in the same position does not exceed 0.25; and in the rendering matrices 540 and 510, the rendering matrices are in different rendering matrices. However, the difference between the values of the elements at the same position will likewise not exceed 0.25. Therefore, assuming that the absolute value of the luminance difference of the two frame periods in which the display area 301 and the adjacent pixel 230B or 230R on the adjacent boundary of the display area 302 are temporally adjacent is |ΔB|, then 0<|Δ B|≦0.25×Bmax. Where Bmax is the maximum brightness allowed for each sub-pixel 230B or 230R. In an embodiment of the invention, Bmax is a gamma value and Bmax is equal to one. It can be seen that the absolute value of the luminance difference of the two frame periods adjacent to each other in the temporally adjacent pixels 230B or 230R on the adjacent boundary of the display area 301 and the display area 302 does not exceed 0.25 Bmax. Therefore, the result of rendering the screen of the display 300 by the rendering matrices 510 to 540, the two images displayed by the display 300 in any two frame periods, the second painting on the adjacent boundary of the display area 301 and the display area 302 The difference in brightness of the prime 230B or 230R is not 0.25Bmax. Therefore, by the rendering method of the embodiment, the color shift and flicker of the display 300 on the adjacent boundary between the display area 301 and the display area 302 can be reduced.

Although the above display 300 adopts the driving method of the left and right display areas, the present invention is also applicable to the driving and rendering of the display two upper display areas. Please refer to FIG. 7 to FIG. 9. FIG. 7 is a schematic diagram of a display 700 according to an embodiment of the present invention. Figure 8 is a schematic diagram of a matrix cycle used by a driving circuit in accordance with an embodiment of the present invention. Figure 9 is a schematic diagram of the screen displayed by the display 700 of Figure 7 in different frame periods. In the present embodiment, the display 700 includes an adjacent display area 701 and a display area 702, wherein the display area 701 and the display area 702 are separated by a broken line 703. Display area 701 and display area 702 are driven by two different drive wafers and the display 700 is rendered in a matrix loop 800. The matrix loop 800 includes a plurality of rendering matrices 810 through 840 and is used sequentially to render multiple frames of the display 700. The rendering matrices 810 through 840 of the matrix loop 800 are each a 3 x 3 matrix and each contain a plurality of elements. Each of the elements whose value is greater than zero is used to set a direction of the value, and at least two of the temporally adjacent rendering matrices of the at least one matrix cycle have at least one different direction of value. In detail, the rendering matrices 810 to 840 are sequentially used according to the cyclic sequence illustrated in FIG. 8 to render the frames of the plurality of consecutive frame periods of the display 700, and the above-described looping sequence is Rendering matrix 810 → rendering moment Array 820 → Rendering Matrix 830 → Rendering Matrix 840. When the rendering matrix 840 is used to render a picture of a certain frame period of the display 700, the picture of the next frame period of the display 700 is again rendered in the rendering matrix 810. In other words, in terms of the order in which they are used, the rendering matrix 810 is periodically used in a frame interval with the rendering matrices 840 and 820, respectively; the rendering matrix 820 is temporally separated from the rendering matrices 810 and 830 by a frame period. The rendering matrix 830 is used periodically in a time frame with the rendering matrices 820 and 840, respectively; and the rendering matrix 840 is used periodically in a time frame with the rendering matrices 830 and 810, respectively. If the picture rendered by the rendering matrix 810 is the picture 910 in FIG. 9 and the frame period corresponding to the picture 910 is the Nth frame period of the display 700 (N is an integer greater than zero), then The screens rendered by the rendering matrices 820, 830, and 840 are respectively the screens 920, 930, and 940 in FIG. 9, and the frame periods corresponding to the screens 920, 930, and 940 are respectively the (N) of the display 700. +1) frame cycle, (N+2) frame cycle, and (N+3) frame cycle. It is to be understood that in order to facilitate the reader of the present specification to easily understand the gist of the present invention, the pictures 910 to 940 illustrated in FIG. 9 only show the sub-pixels of the portions on the adjacent boundaries of the display areas 701, 702. Groups 210 and 220, and such a schematic representation does not affect the implementation of the present invention.

The value of the element of the second row of the second row of the plurality of rendering matrices 810 to 840 of the matrix loop 800 also represents the ratio of the multiplication of the corresponding color data of the sub-pixel to be rendered, and each of the other elements The value of the representative represents the ratio of the color data of the same color in the sub-pixel group 210 or the sub-pixel group 220 adjacent to and in the corresponding direction. That is, in each of the rendering matrices 810 to 840, each of the elements other than the elements of the second row of the second column corresponds to a neighboring sub-pixel group 210 or sub-pixel group of the sub-pixel to be rendered. 220, and the first row of the first column of the rendering matrix, the second row of the first column, the third row of the first column, the first row of the second column, the third row of the third column, the first row of the third column, the third The sub-pixel groups corresponding to the elements of the second row and the third row of the column are respectively adjacent to the sub-pixel to be rendered, and are located at the upper left, the upper right, the upper right, and the left of the sub-pixel to be rendered. Square, right, bottom left, right below, and bottom right. Since the rendering matrices 810 to 840 are respectively , , and Therefore, the rendering matrix 810 defines an orientation direction of the upward value, the rendering matrices 820 and 840 respectively define the direction of the values of the upward and downward values, and the rendering matrix 830 defines a downward value. Value direction. It can be seen that any two of the rendering matrices adjacent to the rendering matrix 810 to 840 have at least one different value direction.

In addition, with respect to the two rendering matrices of rendering matrices 810 and 820, the difference between the values of the elements in different rendering matrices but in the same position (ie, the same column of peers) does not exceed 0.25. Similarly, in the case of rendering the matrix 820 and 830, the difference between the values of the elements in different rendering matrices but in the same position will not exceed 0.25; and the two matrices 830 and 840 are rendered. In the case of rendering matrices, the difference between the values of the elements in different rendering matrices but in the same position will not exceed 0.25; and in the two rendering matrices of rendering matrices 840 and 810, in different rendering matrices but in the same The difference between the values of the elements on the location will likewise not exceed 0.25. Therefore, assuming that the absolute value of the luminance difference of the two frame periods adjacent to each other in the temporally adjacent pixels 230B or 230R on the adjacent boundary of the display area 701 and the display area 702 is |ΔB|, then 0<|Δ B|≦0.25×Bmax. Where Bmax is the maximum brightness allowed for each sub-pixel 230B or 230R. It can be seen that the absolute value of the luminance difference of the two frame periods adjacent to each other in the temporally adjacent pixels 230B or 230R on the adjacent boundary of the display area 701 and the display area 702 does not exceed 0.25 Bmax. Therefore, the result of rendering the screen of the display 700 by the rendering matrices 810 to 840, the two screens displayed by the display 700 in any two frame periods, the second painting on the adjacent boundary of the display area 701 and the display area 702 The difference in brightness of the prime 230B or 230R is not 0.25Bmax. Therefore, by the rendering method of the embodiment, the color shift and flicker of the display 700 on the adjacent boundary between the display area 701 and the display area 702 can be reduced.

In addition, in other embodiments of the present invention, it may also be as shown in FIG. 10 or FIG. The illustrated matrix cycle 1000 or 1100 renders the picture of display 300 or 700. The matrix loop 1000 includes rendering matrices 1010 to 1040, and the rendering matrices 1010 to 1040 are sequentially used according to the cyclic sequence illustrated in FIG. 10 to display a plurality of consecutive frame periods of the display 300 or 700. The rendering is performed, and the sequence of the loop is sequentially the rendering matrix 1010→the rendering matrix 1020→the rendering matrix 1030→the rendering matrix 1040. When the rendering matrix 1040 is used to render a picture of a certain frame period of the display 300 or 700, the picture of the next frame period of the display 300 or 700 is again rendered in the rendering matrix 1010. And by rendering the pictures of the display 300 or 700 by the rendering matrix 1010 to 1040, the display 300 or 700 displays the two pictures in any two frame periods, in the display area (301 or 701) and the display area ( 302 or 702) The difference in brightness of the sub-pixel 230B or 230R on the adjacent boundary is one-sixth of Bmax, and is also not greater than 0.25Bmax. Therefore, by the rendering method of the embodiment, the color shift and flicker of the displays 300 and 700 on the adjacent boundaries of the two display areas can be reduced.

Similarly, matrix loop 1100 includes rendering matrices 1110 through 1180, and rendering matrices 1110 through 1180 of matrix loop 1100 are sequentially used in accordance with the cyclic sequence illustrated in FIG. 11 for multiple consecutive views of display 300 or 700 The picture of the frame period is rendered, and the sequence of the cycle is the rendering matrix 1110→the rendering matrix 1120→the rendering matrix 1130→the rendering matrix 1140→1150→the rendering matrix 1160→the rendering matrix 1170→the rendering matrix 1180. When the rendering matrix 1180 is used to render a picture of a certain frame period of the display 300 or 700, the picture of the next frame period of the display 300 or 700 is again rendered in the rendering matrix 1110. And by rendering the pictures of the display 300 or 700 by the rendering matrix 1110 to 1180, the display 300 or 700 displays the two pictures in any two frame periods, which are in the display area (301 or 701) and the display area ( 302 or 702) The difference in brightness of the sub-pixel 230B or 230R on the adjacent boundary is not higher than 0.25Bmax. Therefore, by the rendering method of the embodiment, the color shift and flicker of the displays 300 and 700 on the adjacent boundaries of the two display areas can be reduced.

In an embodiment of the invention, the start matrix of the display area 301 and the display area 302 of the display 300 may be different. In detail, starting from the screen in which the display 300 displays its first frame period, the sub-pixels of the display area 301 can be rendered using any one of the four rendering matrices 510 to 540 selected from the matrix loop 500. The sub-pixels of the display area 302 can be rendered using another rendering matrix selected from the four rendering matrices 510 through 540 of the matrix loop 500. Similarly, the display matrix of display area 701 and display area 702 of display 700 may also be different. In detail, starting from the screen in which the display 700 displays its first frame period, the sub-pixels of the display area 701 can be rendered using any of the rendering matrices selected from the four rendering matrices 810 to 840 of the matrix loop 800. The sub-pixels of the display area 702 can be rendered using another rendering matrix selected from the four rendering matrices 810-840 of the matrix loop 800.

In an embodiment of the invention, the matrix loops used by the display area 301 and the display area 302 of the display 300 may be different. For example, the sub-pixels of the display area 301 can be rendered by the matrix loop 500 of FIG. 5, and the sub-pixels of the display area 302 can be rendered by the matrix loop 1000 or 1100 of FIG. 10 or FIG. . Similarly, the matrix loops used by display area 701 and display area 702 of display 700 can be different. For example, the sub-pixels of the display area 701 can be rendered by the matrix loop 800 of FIG. 8, and the sub-pixels of the display area 702 can be rendered by the matrix loop 1000 or 1100 of FIG. 10 or FIG. .

In an embodiment of the invention, the starting matrices of sub-pixels of different colors may be different. In particular, starting from the display of the display of its first frame period, the red sub-pixel 230R of display 300 can begin with any one of the four rendering matrices 510 through 540 selected from matrix loop 500. Rendering, while the blue sub-pixel 230B of display 300 can begin rendering with another rendering matrix selected from four rendering matrices 510 through 540 of matrix loop 500. For another example, starting from the display of the display of its first frame period, the red sub-pixel 230R of display 700 can utilize four rendering matrices 1010 through 1040 from matrix loop 1000. Any one of the selected rendering matrices begins rendering, and the blue sub-pixel 230B of display 700 can begin rendering with another rendering matrix selected from the four rendering matrices 1010 through 1040 of the matrix loop 1000.

In the above embodiment, the secondary pixels of the display 300 and the display 700 include sub-pixels of three colors, respectively, a red sub-pixel 230R, a green sub-pixel 230G, and a blue sub-pixel 230B. However, the invention is not limited thereto. The invention is also applicable to other types of SPR displays, such as display 1300 of Figure 12. The display 1300 is an SPR display, and includes a plurality of sub-pixel groups 1310 and a plurality of sub-pixel groups 1320, wherein the sub-pixel groups 1310 and the sub-pixel groups 1320 are staggered with each other. Each pixel group 1310 includes a red sub-pixel 330R and a green sub-pixel 330G, and each pixel group 1320 includes a blue sub-pixel 330B and a white sub-pixel 330W. The areas of the red sub-pixel 330R, the green sub-pixel 330G, the blue sub-pixel 330B, and the white sub-pixel 330W are equal. The sub-pixel groups 1310 and 1320 play a role similar to the pixel 110 in Fig. 1, however, because the sub-pixel group 1310 lacks the blue sub-pixel 230B, and the sub-pixel group 1320 lacks the red sub-pixel 330R and the green color. The pixel 330G, so the display 1300 will render the secondary pixels of each pixel group 1310 and 1320. In addition, the white sub-pixel 330W can be used to compensate the brightness of the red sub-pixel 330R, the green sub-pixel 330G, and the blue sub-pixel 330B around it. The display 1300 includes an adjacent display area 1301 and a display area 1302, wherein the display area 1301 and the display area 1302 are separated by a broken line 1303. The display area 1301 and the display area 1302 are driven and rendered by two different driving chips.

When the display 1300 is rendered, the display 1300 receives the picture material 400 of the plurality of frame periods as shown in FIG. The picture material 400 of each frame period includes multiple pieces of pixel data 412 of the first data set 410 and multiple pieces of pixel data 412 of the second data set 420. The multi-pixel data 412 of the first data set 410 is used to drive the plurality of first pixel groups 1310 and the plurality of second pixel groups 1320 of the display area 1301 of the display 1300, and the plurality of strokes of the second data set 220 The prime data 412 is used to drive the plurality of first pixel groups 1310 and the plurality of second pixel groups 1320 of the display area 1302. Each of the pixel data 412 has red data D _R , green data D _G and blue data D _B corresponding to red, green and blue, respectively.

Each frame data 400 corresponds to a frame period of the display 1300 for driving the display 1300 to display a corresponding picture in a corresponding frame period. The multi-pixel data 412 of the first data set 410 is used to drive the plurality of first pixel groups 1310 and the plurality of second pixel groups 1320 of the display area 1301 of the display 1300, and the second data set 220 The multi-pixel data 412 is used to drive the plurality of first pixel groups 1310 and the plurality of second pixel groups 1320 of the display area 1302. Each of the pixel data 412 has a red data D _R , a green data D _G and a blue data D _B respectively corresponding to red, green, and blue, for driving a corresponding sub-pixel group 1310 or sub-pixel group 1320. . In addition, due to the presence of the white sub-pixel 330W, the display 1300 calculates the white sub-pixel 330W according to the red data D _R , the green data D _G and the blue data D _B of the sub-pixel group 1320 of the white sub-pixel 330W. White information. The calculation method of the white data is a conventional technique in the technical field, and will vary depending on the specifications of the display (for example, the area ratio of each pixel), and therefore will not be described herein. Assume that the above white data is D _W , because the sub-pixel group 1310 lacks the blue sub-pixel 230B, and the sub-pixel group 1320 lacks the red sub-pixel 330R and the green sub-pixel 330G, and the white sub-pixel 330W can be used. In order to compensate the brightness of the red sub-pixel 330R, the green sub-pixel 330G, and the blue sub-pixel 330B, the red sub-pixel 330R and the green sub-picture of the sub-pixel group 1310 are rendered when the display 1300 is rendered. The prime 330G obtains the rendered values R _D and G _D of the red data D _R and the green data D _G from the adjacent sub-pixel groups 1310 or 1320 according to the rendering matrix, respectively, and the blue sub-pixels of the sub-pixel group 1320. 330B 330W and white sub-pixel matrix renders the adjacent sub-pixel group from 1310 or 1320 to get there is to render the value of B _D D _B of the information about the blue and white rendering data D _W W _D value basis. Taking Figure 12 as an example, it shows the display 1300 to render the matrix. In the case of rendering, the red sub-pixel 330R and the green sub-pixel 330G of the sub-pixel group 1310 respectively receive the rendering values R _D and G _{D of} the left adjacent sub-pixel group 1320, and the sub-pixel group 1320 The blue sub-pixel 330B and the white sub-pixel 330W respectively receive the rendered values B _D and W _{D of} the left adjacent sub-pixel group 1310. In addition, after actual test results, the color shift and flicker on the adjacent boundaries of the two display areas 1301 and 1302 can be reduced by the picture of the display 1300 rendered by the plurality of rendering matrices of the matrix loop of the present invention.

Please refer to Figure 13. FIG. 13 is a flowchart of a method for rendering a screen of a display according to an embodiment of the present invention. The method includes the following steps: Step S1410: providing at least one matrix loop, wherein each matrix loop includes at least four rendering matrices, each The rendering matrix includes a plurality of elements, and each of the elements whose values are greater than zero is used to set a direction of the value, and any two adjacent temporally adjacent rendering matrices of the at least one matrix cycle have at least one different direction of value; Step S1420: sequentially, according to the at least one matrix loop, rendering the screens of the display in different frame periods, wherein the frames of the two temporally adjacent frame periods are rendered with different rendering matrices; and step S1430 : The display displays the rendered image of the rendered matrix in each frame cycle.

In summary, in the embodiment of the present invention, when the screen of the display is rendered, multiple sub-pixels of the display area of the display are rendered by using multiple rendering matrices of the matrix loop, so that multiple display areas of the display can be reduced. The color shift and flicker on the adjacent borders can improve the picture quality of the display.

The above description is only a preferred embodiment of the present invention, and the scope of the patent application according to the present invention is Equal variations and modifications are intended to be within the scope of the present invention.

S1410 to S1430‧‧‧ Process steps

Claims (5)

A method for rendering a picture of a display, the display comprising a plurality of first pixel groups and a plurality of second pixel groups, the first pixel groups being interlaced with the second pixel groups Arranging, and each of the first set of pixels and each of the second set of pixels each include at least two colors of sub-pixels, and the first pixels of the first set of pixels The color combination is different from the color combination of the second pixels of the second set of pixels, the method comprising: providing at least one matrix cycle, wherein each matrix cycle comprises at least four rendering matrices, each of the rendering matrices comprising a plurality of elements Each of the plurality of elements having a value greater than zero is used to set a direction of the value, and any two adjacent temporally adjacent rendering matrices of the at least one matrix cycle have at least one different direction of the value; A matrix loop sequentially renders the display of the display in different frame periods, wherein the frames of the two temporally adjacent frame periods are rendered with different rendering matrices; and the display is in each frame Cycle display Matrix rendered picture. The method of claim 1, wherein the display comprises a first display area and a second display area, and any pixel on the adjacent boundary of the first display area and the second display area is in time series The absolute value of the luminance difference of the adjacent two frame periods is |ΔB|, and 0<|ΔB|≦0.25×Bmax, where Bmax is the maximum allowable luminance of each sub-pixel. The method of claim 1, wherein the display comprises a first display area and a second display area, the first display area is adjacent to the second display area, and sequentially according to the at least one matrix The rendering of the picture of the different frame periods of the display comprises: starting a matrix with a first rendering matrix, and sequentially rendering the first display area in different frame periods according to the at least one matrix cycle; as well as Taking a second rendering matrix as a starting matrix, and sequentially rendering the second display area in a different frame period according to the at least one matrix loop, wherein the first rendering matrix and the second rendering matrix are Two different rendering matrices in the at least one matrix loop. The method of claim 1, wherein the at least one matrix loop comprises a plurality of matrix loops, and sequentially displaying the images of the display in different frame periods according to the at least one matrix loop comprises: cycling according to the matrices a first matrix loop in which the sub-pixels for displaying the first color are sequentially rendered in a plurality of frame periods; and a second matrix loop in the matrix loops, sequentially The sub-pixels for displaying the second color in the display are rendered in a plurality of frame periods, wherein the plurality of rendering matrices of the first matrix loop are not completely different from the plurality of rendering matrices of the second matrix loop. The method of claim 1, wherein sequentially rendering the pictures of different frame periods of the display according to the at least one matrix cycle comprises: starting with a first rendering matrix, and according to the at least one matrix Looping, sequentially rendering the secondary pixels used to display the first color in the plurality of frame periods; and starting from a second rendering matrix, and according to the at least one matrix loop, sequentially Rendering a sub-pixel for displaying a second color in the display in a plurality of frame periods, wherein the first rendering matrix and the second rendering matrix are two different rendering matrices in the at least one matrix loop .