CN113178177A - Display device and control method thereof - Google Patents
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- 235000019557 luminance Nutrition 0.000 description 69
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The present invention relates to a display device and a control method thereof. The display device comprises sub-display areas which are arranged in an array mode, wherein sub-pixels which emit light with the same color in each sub-display area comprise high-gray-scale sub-pixels and low-gray-scale sub-pixels; the method comprises the following steps: determining a first gray scale of a gray scale picture aiming at each sub-display area; aiming at the sub-pixels emitting light of the same color, determining first brightness according to a first gray scale and a gamma curve; the luminance of the sub-pixel is the first luminance when the gray scale of the sub-pixel is the first gray scale; and determining a second gray scale and a third gray scale according to the first brightness, the gamma curve and the relationship among the first brightness, the second brightness and the third brightness, wherein the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the light-emitting brightness of the high-gray-scale sub-pixel is the second brightness, the light-emitting brightness of the low-gray-scale sub-pixel is the third brightness, and the sum of the second brightness and the third brightness is twice of the first brightness. According to the embodiment of the invention, afterimages can be improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a control method thereof.
Background
In the related art, as the ultra high definition video industry is continuously upgraded, a display device with a resolution of 4K has been generally popularized, and a technology of a display device with a resolution of 8K has been gradually matured. For example, TFT-LCD TVs (thin film transistor-liquid crystal display TVs) are being developed toward large-sized, high-definition displays. In contrast, for the display device with 8K resolution, the PPI (pixel density) is large, the sub-pixel is small, the transmittance of the display device is reduced, and the power consumption of the display device is increased. When the liquid crystal display device of 8K resolution uses negative liquid crystal, transmittance can be improved, but afterimage may occur.
Disclosure of Invention
The invention provides a display device and a control method thereof, which are used for solving the defects in the related art.
According to a first aspect of embodiments of the present invention, there is provided a control method of a display device, the display device including a display area, the display area including sub-display areas arranged in an array, each of the sub-display areas including sub-pixels emitting different colors of light alternately arranged, the number of the sub-pixels emitting the same color of light being 2N; aiming at sub-pixels emitting light of the same color, 2N sub-pixels are arrayed along a first direction and a second direction, the first direction is intersected with the second direction, and the 2N sub-pixels comprise N high-gray-scale sub-pixels and N low-gray-scale sub-pixels; n is a positive integer; the method comprises the following steps:
determining a first gray scale of a gray scale picture when the gray scale picture is displayed for each sub-display area;
aiming at the sub-pixels emitting light of the same color, determining corresponding first brightness according to the first gray scale and the corresponding gamma curve; the luminance of the sub-pixel is a first luminance when the gray scale of the sub-pixel is the first gray scale;
determining a second gray scale and a third gray scale according to the first brightness, the gamma curve and the relationship among the first brightness, the second brightness and the third brightness, wherein the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is larger than the third gray scale, the light-emitting brightness of the high-gray-scale sub-pixel is the second brightness, the light-emitting brightness of the low-gray-scale sub-pixel is the third brightness, and the sum of the second brightness and the third brightness is 2 times of the first brightness; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
In one embodiment, the first gray scale is a gray scale other than a lowest gray scale and a highest gray scale on the gamma curve.
In one embodiment, the second gray level is the highest gray level, or
The third gray scale is the lowest gray scale, or
The second gray scale and the third gray scale are two different gray scales on the gamma curve except for the lowest gray scale and the highest gray scale respectively.
In one embodiment, in each of the sub-display regions, for sub-pixels emitting light of the same color, j high gray scale sub-pixels are adjacent, j low gray scale sub-pixels are adjacent, and j is a positive integer.
In one embodiment, j is greater than 2;
in each sub-display area, aiming at the sub-pixels emitting light of the same color, the connecting line of the adjacent j high-gray-scale sub-pixels is a nonlinear curve, and the connecting line of the adjacent j low-gray-scale sub-pixels is a nonlinear curve.
In one embodiment, j equals 4;
in each sub-display area, aiming at the sub-pixels emitting light of the same color, connecting lines of adjacent 4 high-gray-scale sub-pixels form a first quadrangle, and connecting lines of adjacent 4 low-gray-scale sub-pixels form a second quadrangle;
the first quadrilateral is adjacent to the second quadrilateral.
In one embodiment, j equals 6;
in each sub-display area, for the sub-pixels emitting light of the same color, the connecting lines of the adjacent 6 high-gray-scale sub-pixels form a first hexagon, and the connecting lines of the adjacent 6 low-gray-scale sub-pixels form a second hexagon;
the first hexagon is adjacent to the second hexagon.
According to a second aspect of the embodiments of the present invention, there is provided a display device, including a display region including sub-display regions arranged in an array, each of the sub-display regions including sub-pixels emitting different colors arranged alternately, the number of the sub-pixels emitting the same color being 2N; aiming at sub-pixels emitting light of the same color, 2N sub-pixels are arrayed along a first direction and a second direction, the first direction is intersected with the second direction, and the 2N sub-pixels comprise N high-gray-scale sub-pixels and N low-gray-scale sub-pixels; n is a positive integer; the display device includes:
the first determining module is configured to determine a first gray scale of a gray scale picture when the gray scale picture is displayed for each sub display area;
a second determining module configured to determine, for the sub-pixels emitting light of the same color, corresponding first luminance according to the first gray scale and the corresponding gamma curve; the luminance of the sub-pixel is a first luminance when the gray scale of the sub-pixel is the first gray scale;
a third determining module configured to determine a second gray scale and a third gray scale according to the first luminance, the gamma curve and a relationship among the first luminance, the second luminance and the third luminance, where the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is greater than the third gray scale, the light-emitting luminance of the high-gray-scale sub-pixel is the second luminance, the light-emitting luminance of the low-gray-scale sub-pixel is the third luminance, and a sum of the second luminance and the third luminance is 2 times of the first luminance; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
According to a third aspect of embodiments of the present invention, there is provided a display device including a processor and a memory; the memory for storing a computer program; the processor is used for executing the computer program stored on the memory to realize the method.
According to a fourth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium having stored therein a computer program which, when executed by a processor, implements the above-described method.
According to the above embodiment, since the 2N sub-pixels emitting lights of the same color in each sub-display region include N high gray sub-pixels and N low gray sub-pixels, when displaying a gray picture, for the sub-pixels emitting lights of the same color, the gray of the high gray sub-pixels is the second gray, the gray of the low gray sub-pixels is the third gray, the second gray is larger than the third gray, the light emitting luminance of the high gray sub-pixels is the second luminance, the light emitting luminance of the low gray sub-pixels is the third luminance, the gray of the gray picture is the first gray, the light emitting luminance of the sub-pixels is the first luminance when the gray of the sub-pixels is the first gray, the sum of the second luminance and the third luminance is 2 times of the first luminance, the third luminance is smaller than the first luminance, that is, the gray picture of the first gray picture is realized by the high gray sub-pixels and the low gray sub-pixels, at least one of the low gray sub-pixels or the high gray sub-pixels causes a low residual pixel, the level of the afterimage can be reduced when the picture is switched, so the afterimage phenomenon can be obviously improved. In addition, because the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the first direction and the second direction of the sub-pixels emitting light of the same color are different, the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction of the first direction and the second direction are different, the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different, the linear rules of the high-gray-scale sub-pixels and the low-gray-scale sub-pixels can be weakened, and the image quality defects such as color cast, horizontal lines, vertical lines, grid lines and the like can be obviously improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram illustrating a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural view showing another display device according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of a display apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the relationship between the afterimage level and the gray level according to an embodiment of the present invention;
fig. 5 is a schematic structural view illustrating another display device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating another display device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The embodiment of the invention provides a control method of a display device. In the present embodiment, the display device may be a liquid crystal display device. The liquid crystal layer in the liquid crystal display device can adopt negative liquid crystal, the transmittance can be improved, and compared with the liquid crystal layer adopting 3% HB liquid crystal, the transmittance can be improved by more than 6%. In the present embodiment, the liquid crystal display device may be an ADS (Advanced-Super Dimensional Switching) type liquid crystal display device. The resolution of the liquid crystal display device may be 8K resolution, but is not limited thereto.
In the present embodiment, as shown in fig. 1, the display device includes a display area 11, the display area 11 includes a plurality of sub-display areas 111 arranged in an array, and each sub-display area 111 has the same size. As shown in fig. 2, each sub-display region 111 includes 2N pixel units 21 arranged in an array along the first direction X and the second direction Y, and each pixel unit 21 includes a red sub-pixel 211, a green sub-pixel 212, and a blue sub-pixel 213 arranged in sequence. The first direction X intersects and is perpendicular to the second direction Y. The red sub-pixel 211 is for emitting red light, the green sub-pixel 212 is for emitting green light, and the blue sub-pixel 213 is for emitting blue light. That is, each sub-display region 111 includes red sub-pixels 211, green sub-pixels 212, and blue sub-pixels 213 alternately arranged, the number of the red sub-pixels 211 is 2N, the number of the green sub-pixels 212 is 2N, and the number of the blue sub-pixels 213 is 2N. The 2N red subpixels 211 are arranged in an array along the first direction X and the second direction Y, the green subpixels 212 are arranged in an array along the first direction X and the second direction Y, and the blue subpixels 213 are arranged in an array along the first direction X and the second direction Y. N is a positive integer. In the present embodiment, N is 12, but is not limited thereto. That is, in the present embodiment, each sub-display region 111 includes 24 red sub-pixels 211, 24 green sub-pixels 212, and 24 blue sub-pixels 213 arranged in an array, for a total of 72 sub-pixels.
In the present embodiment, the 2N sub-pixels include N high gray sub-pixels and N low gray sub-pixels for the sub-pixels emitting light of the same color. For example, the 24 red subpixels 211 include 12 high-gray-scale red subpixels 2111 and 12 low-gray-scale red subpixels 2112, the 24 green subpixels 212 include 12 high-gray-scale green subpixels 2121 and 12 low-gray-scale green subpixels 2122, and the 24 blue subpixels 213 include 12 high-gray-scale blue subpixels 2131 and 12 low-gray-scale blue subpixels 2132.
In the present embodiment, the sub-pixels emitting light of different colors use a corresponding gamma curve respectively. For example, the red subpixel 211 uses a first gamma curve, the green subpixel 212 uses a second gamma curve, and the blue subpixel 213 uses a third gamma curve. The gamma values of the first gamma curve, the second gamma curve and the third gamma curve can be the same and are all 2.2. The brightness corresponding to the lowest gray scale of the first gamma curve, the second gamma curve and the third gamma curve can be the same or different, and the brightness corresponding to the highest gray scale of the first gamma curve, the second gamma curve and the third gamma curve can be the same or different.
In this embodiment, the lowest gray scale of the first, second and third gamma curves is 0, and the highest gray scale is 255. In other embodiments, the values of the lowest gray level and the highest gray level of the first gamma curve, the second gamma curve and the third gamma curve are not limited to the above values.
In this embodiment, as shown in fig. 3, the method for controlling the display device includes the following steps 301 to 303:
in step 301, for each sub-display region 111, a first gray scale of a gray scale screen is determined when the gray scale screen is displayed.
In this embodiment, when displaying the gray-scale picture, for each sub-display region 111, the display device may determine the gray scale of the gray-scale picture according to the image data of the gray-scale picture, where the gray scale of the gray-scale picture is the first gray scale. In the present embodiment, the first gray scale of the gray scale frame is 127 for example.
It should be noted that, when the first gray scale of the gray scale frame is 0 or 255, the gray scale of the sub-pixel is not converted by the control method of the display device. Therefore, the first gray scale of the gray scale image can be the gray scale except the lowest gray scale and the highest gray scale on the gamma curve.
In step 302, for the sub-pixels emitting the same color light, determining a corresponding first brightness according to the first gray scale and the corresponding gamma curve; the luminance of the sub-pixel is the first luminance when the gray scale of the sub-pixel is the first gray scale.
In the present embodiment, the method of controlling the sub-pixels of each color is the same, and therefore, in order to avoid content redundancy, the following description will take the control of the red sub-pixel 211 as an example.
In this embodiment, the corresponding first luminance is determined according to the first gray scale and the first gamma curve, wherein the luminance of the red sub-pixel 211 is the first luminance when the gray scale is the first gray scale. Wherein the expression of the first gamma curve may be as follows
Wherein L is gray scale, I is brightness when the gray scale is L, and I isL255The brightness is the brightness when the gray scale is 255, wherein the brightness when the gray scale is 0 may be 0.5nit (nit), and the brightness when the gray scale is 255 is 735nit, but the invention is not limited thereto.
In the present embodiment, when the first gray level is 127, the luminance at the gray level of 127 is 159nit by substituting the above expression.
In step 303, according to the first luminance, the gamma curve and the relationship among the first luminance, the second luminance and the third luminance, determining a second gray scale and a third gray scale, where the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is greater than the third gray scale, the luminance of the high-gray-scale sub-pixel is the second luminance, the luminance of the low-gray-scale sub-pixel is the third luminance, and the sum of the second luminance and the third luminance is 2 times of the first luminance; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
In this embodiment, the second gray scale may be larger than the gray scale causing the maximum level of afterimage, or the third gray scale may be smaller than the gray scale causing the maximum level of afterimage. Since the gray scale of the sub-pixel is about 100, the level of the afterimage is the largest, the second gray scale may be greater than 100, or the third gray scale may be less than 100. Thus, when the second gray scale is greater than 100 or the third gray scale is less than 100, the level of afterimage caused by at least one of the low gray scale sub-pixel or the high gray scale sub-pixel is lower, and the level of afterimage can be reduced when the picture is switched.
In this embodiment, the gray level of the low-gray level red sub-pixel 2112 can be the lowest gray level, i.e., the third gray level can be the lowest gray level, i.e., 0. Wherein, the level of afterimage caused when the gray scale of the sub-pixel is 0 or 255 is minimum. The luminance at the gray level of 0 can be calculated from the first gamma curve to be 0.5nit, i.e., the third luminance is 0.5 nit. Since the luminance at the gray level of 127 is 159nit and the third luminance is 0.5nit, the luminance of the high-gray-level red sub-pixel 2111 is (159 × 2 to 0.5) nit according to the relationship between the first luminance, the second luminance, and the third luminance (i.e., the sum of the second luminance and the third luminance is 2 times the first luminance) and the third luminance, that is, (159 × 2 to 0.5) nit is obtained, and the second luminance is substituted into the above expression to obtain the second gray level of 174. I.e., the gray level of the high gray level sub-pixel is 174. It should be noted that the above calculation process may be implemented by a chip.
In this embodiment, at least one of the second gray scale and the third gray scale may be preset, and the other may be calculated according to the first gray scale, the gamma curve and the relationship among the first brightness, the second brightness and the third brightness of the gray scale image. For example, the third gray level may be preset and the second gray level may be calculated. Alternatively, the second gray scale may be preset and the third gray scale may be calculated.
In the present embodiment, the second gray level may be 174, and the third gray level may be 0, but is not limited thereto. When the first gray scale of the gray scale picture is other values, the control method can be adopted to determine the value of the second gray scale and the value of the third gray scale. For example, when the first gray level is 191, the second gray level may be the highest gray level, i.e., 255, and the third gray level may be 70. Wherein, the value of the second gray scale can be preset. When the first gray scale is 63, the second gray scale can be 90, and the third gray scale can be 0. Wherein, the value of the third gray scale can be preset. It should be noted that the second gray scale and the third gray scale may also be two different gray scales on the gamma curve except for the lowest gray scale and the highest gray scale.
In this embodiment, after determining the second gray scale and the third gray scale, the first driving voltage of the high-gray-scale red sub-pixel 2111 can be determined according to the second gray scale, and the second driving voltages of the 12 low-gray-scale red sub-pixels 2112 can be determined according to the third gray scale, the driving chip of the display device drives the high-gray-scale red sub-pixel 2111 to emit light according to the first driving voltage, and drives the low-gray-scale red sub-pixel 2112 to emit light according to the second driving voltage.
Similarly, in this embodiment, the method for determining the gray levels of the 12 high-gray-level green sub-pixels 2121 and the 12 low-gray-level green sub-pixels 2122 and the method for determining the gray levels of the 12 high-gray-level blue sub-pixels 2131 and the gray levels of the 12 low-gray-level blue sub-pixels 2132 are similar to the method for determining the gray levels of the 12 high-gray-level red sub-pixels 2111 and the gray levels of the 12 low-gray-level red sub-pixels 2112, and therefore, the description thereof is omitted.
In this embodiment, when the first gray scale of the gray scale image is 127, the second gray scale of the high-gray-scale green sub-pixel 2121 can be 174, and the third gray scale of the low-gray-scale green sub-pixel 2122 can be 0. The second gray scale of the high gray scale blue sub-pixel 2131 can be 174, and the third gray scale of the low gray scale blue sub-pixel 2132 can be 0.
Similarly, in this embodiment, the method for the display device to control the 12 high gray-scale green sub-pixels 2121 to emit light, the 12 low gray-scale green sub-pixels 2122 to emit light, the 12 high gray-scale blue sub-pixels 2131 to emit light, and the 12 low gray-scale blue sub-pixels 2132 to emit light is similar to the method for controlling the 12 high gray-scale red sub-pixels 2111 to emit light and the 12 low gray-scale red sub-pixels 2112 to emit light, and therefore, the description is omitted here.
In this embodiment, each sub-display region can display a corresponding gray scale image by 12 high gray scale red sub-pixels 2111, 12 low gray scale red sub-pixels 2112, 12 high gray scale green sub-pixels 2121, 12 low gray scale green sub-pixels 2122, 12 high gray scale blue sub-pixels 2131 and 12 low gray scale blue sub-pixels 2132 under the control of the control method.
In this embodiment, as shown in fig. 2, among the sub-pixels emitting light of two emission colors, the two rows of adjacent high gray scale sub-pixels emitting light of the same color in any direction have different arrangement rules, and the two rows of adjacent low gray scale sub-pixels in any direction have different arrangement rules. For example, two adjacent rows of high gray level red subpixels 2111 in any direction have different arrangement rules, two adjacent rows of low gray level red subpixels 2112 in any direction have different arrangement rules, two adjacent rows of high gray level green subpixels 2121 in any direction have different arrangement rules, and two adjacent rows of low gray level green subpixels 2122 in any direction have different arrangement rules. Of course, the arrangement rule of two adjacent rows of high gray scale sub-pixels in any direction of the sub-pixels emitting light of the same color in the sub-pixels emitting light of one or three colors may be different, and the arrangement rule of two adjacent rows of low gray scale sub-pixels in any direction may be different. Thus, color shift can be prevented from being increased, and defects such as horizontal stripes, vertical stripes, color shift, grid stripes and the like can be reduced to a great extent.
For convenience of description, the first direction X will be referred to as a row direction and the second direction Y will be referred to as a column direction.
In this embodiment, as shown in fig. 2, in the array formed by the red sub-pixels 211, the arrangement rules of the high gray level red sub-pixels 2111 in the two adjacent high gray level red sub-pixels 2111 in the column direction are different, so that the high gray level red sub-pixels 2111 do not exhibit the regular aggregation phenomenon in the column direction. In addition, in the row direction, the high gray level red sub-pixels 2111 in two adjacent columns of the high gray level red sub-pixels 2111 are arranged in different rules, so that the high gray level red sub-pixels 2111 do not exhibit the regular aggregation phenomenon in the row direction.
Similarly, as shown in fig. 2, in the array formed by the red sub-pixels 211, the arrangement rules of the low gray level red sub-pixels 2112 in two adjacent rows of the low gray level red sub-pixels 2112 are different in the column direction, so that the low gray level red sub-pixels 2112 do not exhibit the regular aggregation phenomenon in the column direction. In addition, in the row direction, the arrangement rules of the low gray level red sub-pixels 2112 in the two adjacent columns of the low gray level red sub-pixels 2112 are different, so that the low gray level red sub-pixels 2112 do not exhibit the regular aggregation phenomenon in the row direction.
In the present embodiment, as shown in fig. 2, in the array formed by the green sub-pixels 212, the high gray-scale green sub-pixels 2121 in two adjacent high gray-scale green sub-pixels 2121 are arranged in a different manner in the column direction, so that the high gray-scale green sub-pixels 2121 do not exhibit a regular aggregation phenomenon in the column direction. Moreover, in the row direction, the high gray scale green sub-pixels 2121 in two adjacent columns of the high gray scale green sub-pixels 2121 are arranged in different rules, so that the high gray scale green sub-pixels 2121 do not exhibit regular aggregation in the row direction.
In the present embodiment, as shown in fig. 2, in the array formed by the green sub-pixels 212, the arrangement rule of the low gray level green sub-pixels 2122 in two adjacent rows of the low gray level green sub-pixels 2122 is different in the column direction, so that the low gray level green sub-pixels 2122 do not exhibit the regular aggregation phenomenon in the column direction. Moreover, in the row direction, the arrangement rules of the low gray scale green sub-pixels 2122 in the two adjacent columns of the low gray scale green sub-pixels 2122 are different, so that the low gray scale green sub-pixels 2122 do not exhibit regular aggregation in the row direction.
In this embodiment, as shown in fig. 2, in the array formed by the blue sub-pixels 213, in the column direction, the ith row and the (i + 1) th high gray scale blue sub-pixel 2131 are arranged in the same manner, the ith row and the (i + 2) th high gray scale blue sub-pixel 2131 are arranged in the same manner, the ith row and the (i + 3) th high gray scale blue sub-pixel 2131 are arranged in the same manner, the ith row and the (i + 4) th high gray scale blue sub-pixel 2131 are arranged in the same manner, the ith row and the (i + 5) th row and the (i + 2) th row and the (i + 3) th high gray scale blue sub-pixel 2131 are arranged in the same manner, where i is an odd number, and certainly, in other embodiments, i may be an even number. Thus, in the column direction, the degree of regular clustering of the high grayscale blue subpixels 2131 can be attenuated.
In this embodiment, as shown in fig. 2, in the array formed by the blue sub-pixels 213, in the row direction, the k-th row and the (k + 1) -th row have different arrangement rules of the high gray scale blue sub-pixels 2131, the k-th row and the (k + 2) -th row have different arrangement rules of the high gray scale blue sub-pixels 2131, the k-th row and the (k + 3) -th row have the same arrangement rule of the high gray scale blue sub-pixels 2131, and the k + 2-th row and the k + 3-th row have the same arrangement rule of the high gray scale blue sub-pixels 2131, where k is an odd number, and certainly, in other embodiments, k may be an even number. Thus, in the row direction, the degree of regular clustering of the high grayscale blue subpixels 2131 can be attenuated.
In this embodiment, as shown in fig. 2, in the array formed by the blue sub-pixels 213, in the column direction, the arrangement rule of the i-th row and the i + 1-th row of the low-gray-scale blue sub-pixels 2132 is the same, the arrangement rule of the i-th row and the i + 2-th row of the low-gray-scale blue sub-pixels 2132 is different, the arrangement rule of the i-th row and the i + 3-th row of the low-gray-scale blue sub-pixels 2132 is the same, the arrangement rule of the i-th row and the i + 4-th row of the low-gray-scale blue sub-pixels 2132 is the same, the i + 2-th row and the i + 3-th row of the low-gray-scale blue sub-pixels 2132 are the same, where i is an odd number, and certainly, i may be an even number in other embodiments. In this way, the degree to which the low-grayscale blue subpixels 2132 regularly aggregate in the column direction can be attenuated.
In this embodiment, as shown in fig. 2, in the array formed by the blue sub-pixels 213, in the row direction, the arrangement rule of the kth column and the (k + 1) th column of the low-gray-scale blue sub-pixels 2132 is different, the arrangement rule of the kth column and the (k + 2) th column of the low-gray-scale blue sub-pixels 2132 is different, the arrangement rule of the kth column and the (k + 3) th column of the low-gray-scale blue sub-pixels 2132 is the same, and the arrangement rule of the (k + 2) th column and the (k + 3) th column of the low-gray-scale blue sub-pixels 2132 is the same, where k is an odd number, and certainly, in other embodiments, k may be an even number. In this way, the degree to which the low-grayscale blue subpixels 2132 regularly aggregate in the row direction can be attenuated.
In the present embodiment, as shown in fig. 2, in each of the sub-display regions 111, there are j adjacent high gray-scale sub-pixels, j adjacent low gray-scale sub-pixels, and j is a positive integer. For example, in each of the sub-display regions 111, there are 6 high gray level red sub-pixels 2111 adjacent to each other, 6 low gray level red sub-pixels 2112 adjacent to each other, 6 high gray level green sub-pixels 2121 adjacent to each other, 6 low gray level green sub-pixels 2122 adjacent to each other, 4 high gray level blue sub-pixels 2131 adjacent to each other, and 4 low gray level blue sub-pixels 2132 adjacent to each other. The value of j may not be limited to the above-described value for each color sub-pixel.
In this embodiment, as shown in fig. 2, in each of the sub-display regions 111, a connection line of adjacent j high gray-scale sub-pixels is a non-linear curve, and a connection line of adjacent j low gray-scale sub-pixels is a non-linear curve. For example, in each of the sub-display regions 111, the connecting lines 22 of the adjacent 6 high gray scale red sub-pixels 2111 are nonlinear curves, the connecting lines 23 of the adjacent j low gray scale red sub-pixels 2112 are nonlinear curves, the connecting lines 24 of the adjacent 6 high gray scale green sub-pixels 2121 are nonlinear curves, the connecting lines 25 of the adjacent j low gray scale green sub-pixels 2122 are nonlinear curves, the connecting lines 26 of the adjacent 4 high gray scale blue sub-pixels 2131 are nonlinear curves, and the connecting lines 27 and 28 of the adjacent 4 low gray scale blue sub-pixels 2132 are nonlinear curves.
In this embodiment, as shown in fig. 2, in each of the sub-display regions 111, the connection lines 22 of the adjacent 6 high gray scale red sub-pixels 2111 form a first hexagon, and the connection lines 23 of the adjacent 6 low gray scale red sub-pixels 2112 form a second hexagon, where the first hexagon is adjacent to the second hexagon. The first hexagon is located at the bottom in the sub display area 111 and the second hexagon is located at the top in the display area 111.
In the present embodiment, as shown in fig. 2, in each of the sub-display regions 111, the connecting lines 24 of the adjacent 6 high-gray-scale green sub-pixels 2121 form a third hexagon, and the connecting lines 25 of the adjacent 6 low-gray-scale green sub-pixels 2122 form a fourth hexagon, and the third hexagon is adjacent to the fourth hexagon. The third hexagon is positioned at the top in the sub display area 111 and the fourth hexagon is positioned at the bottom in the display area 111.
In this embodiment, as shown in fig. 2, in each of the sub-display regions 111, the connecting lines 26 of the adjacent 4 high-gray-scale blue sub-pixels 2131 form a first quadrangle, and the connecting lines 27 and 28 of the adjacent 4 low-gray-scale blue sub-pixels 2132 form two second quadrangles, respectively. The first quadrilateral is adjacent to the second quadrilateral. The two second quadrangles are located on both sides of the first quadrangle. The first quadrangle is located in the middle of the sub-display area 111, and the first quadrangle intersects with the first hexagon and the third hexagon respectively.
As shown in fig. 4, after the afterimage of the 7 × 5 checkerboard image passes through a period of time, the afterimage level is observed by switching to another gray scale image, and a corresponding relationship curve 41 between the afterimage level and the gray scale is obtained. Generally, the afterimage is the heaviest near the gray Level of 100 in the gray Level picture, and the Level can be determined to be Level 3. When the first gray scale is 127, the method in this embodiment is used to control the display device, and the afterimage Level is judged to be about Level 1, which is consistent with the measured data. The afterimage level is reduced.
In this embodiment, it is described by taking as examples that 6 high gray level red sub-pixels 2111 are adjacent and the connection line 22 forms a first hexagon, 6 low gray level red sub-pixels 2112 are adjacent and the connection line 23 forms a second hexagon, 6 high gray level green sub-pixels 2121 are adjacent and the connection line 24 forms a third hexagon, 6 low gray level green sub-pixels 2122 are adjacent and the connection line 25 forms a fourth hexagon, 4 high gray level blue sub-pixels 2131 are adjacent and the connection line 26 forms a first quadrangle, and 4 low gray level blue sub-pixels 2132 are adjacent and the connection lines 27 and 28 form two second quadrangles respectively, in other embodiments, the j value corresponding to each light emitting color sub-pixel may be other values. For example, in another embodiment, j may have a value of 3 for the red subpixel 211, 4 for the green subpixel 212, and 5 for the blue subpixel 213. In yet another embodiment, j may have a value of 1 for the red subpixel 211, 2 for the green subpixel 212, and 3 for the blue subpixel 213. In yet another embodiment, j for the red sub-pixel 211 may have a value of 2, j for the green sub-pixel 212 may have a value of 2, and j for the blue sub-pixel 213 may have a value of 1, 2, 3, or 4. The smaller the value of j is, the more favorable the improvement of the grid pattern is, and the larger the value of j is, the more favorable the improvement of the color shift is, therefore, the value of j can be set according to actual requirements.
In this embodiment, since the 2N sub-pixels emitting lights of the same color in each sub-display region include N high gray-scale sub-pixels and N low gray-scale sub-pixels, when displaying a gray-scale picture, for the sub-pixels emitting lights of the same color, the gray scale of the high gray-scale sub-pixels is the second gray scale, the gray scale of the low gray-scale sub-pixels is the third gray scale, the second gray scale is larger than the third gray scale, the light emitting brightness of the high gray-scale sub-pixels is the second brightness, the light emitting brightness of the low gray-scale sub-pixels is the third brightness, the gray scale of the gray-scale picture is the first gray scale, the light emitting brightness of the sub-pixels is the first brightness, the sum of the second brightness and the third brightness is 2 times of the first brightness, the third brightness is smaller than the first brightness, that is, that the gray-scale picture of the first gray scale is realized by the cooperation of the high gray-scale sub-pixels and the low gray-scale sub-pixels, at least one of the low gray-scale sub-pixels or the high-scale sub-pixels causes a lower level, the level of the afterimage can be reduced on the whole when the picture is switched, so that the afterimage phenomenon can be remarkably improved. In addition, because the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the first direction and the second direction of the sub-pixels emitting light of the same color are different, the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction of the first direction and the second direction are different, the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different, the linear rules of the high-gray-scale sub-pixels and the low-gray-scale sub-pixels can be weakened, and the image quality defects such as color cast, horizontal lines, vertical lines, grid lines and the like can be obviously improved.
The embodiment of the invention also provides a display device. The display device comprises a display area 11, wherein the display area 11 comprises sub-display areas 111 arranged in an array, each sub-display area 111 comprises sub-pixels which are alternately arranged and emit light with different colors, and the number of the sub-pixels which emit light with the same color is 2N; aiming at sub-pixels emitting light of the same color, 2N sub-pixels are arrayed along a first direction X and a second direction Y, the first direction X is intersected with the second direction Y, and the 2N sub-pixels comprise N high-gray-scale sub-pixels and N low-gray-scale sub-pixels; n is a positive integer; as shown in fig. 5, the display device includes:
a first determining module 51 configured to determine, for each of the sub display regions 111, a first gray scale of a gray scale picture when the gray scale picture is displayed;
a second determining module 52 configured to determine, for the sub-pixels emitting light of the same color, corresponding first luminances according to the first gray scales and the corresponding gamma curves; wherein, the brightness of the sub-pixel is the first brightness when the gray scale of the sub-pixel is the first gray scale;
a third determining module 53 configured to determine a second gray scale and a third gray scale according to the first luminance, the gamma curve and the relationship among the first luminance, the second luminance and the third luminance, where the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is greater than the third gray scale, the light-emitting luminance of the high-gray-scale sub-pixel is the second luminance, the light-emitting luminance of the low-gray-scale sub-pixel is the third luminance, and the sum of the second luminance and the third luminance is 2 times of the first luminance; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
Fig. 6 is a block diagram illustrating a display device according to an exemplary embodiment. Referring to fig. 6, the apparatus 600 includes a processing component 622 that further includes one or more processors and memory resources, represented by memory 632, for storing instructions, such as applications, that are executable by the processing component 622. The application programs stored in memory 632 may include one or more modules that each correspond to a set of instructions. Further, the processing component 622 is configured to execute instructions to perform the above-described method for display control.
The apparatus 600 may also include a power component 626 configured to perform power management of the apparatus 600, a wired or wireless network interface 650 configured to connect the apparatus 600 to a network, and an input/output (I/O) interface 1358. The apparatus 600 may operate based on an operating system stored in the memory 632, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 632 comprising instructions, executable by the processing component 622 of the apparatus 600 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
The display device in this embodiment may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A control method of a display device is characterized in that the display device comprises a display area, the display area comprises sub-display areas which are arranged in an array, each sub-display area comprises sub-pixels which are alternately arranged and emit light with different colors, and the number of the sub-pixels which emit light with the same color is 2N; aiming at sub-pixels emitting light of the same color, 2N sub-pixels are arrayed along a first direction and a second direction, the first direction is intersected with the second direction, and the 2N sub-pixels comprise N high-gray-scale sub-pixels and N low-gray-scale sub-pixels; n is a positive integer; the method comprises the following steps:
determining a first gray scale of a gray scale picture when the gray scale picture is displayed for each sub-display area;
aiming at the sub-pixels emitting light of the same color, determining corresponding first brightness according to the first gray scale and the corresponding gamma curve; the luminance of the sub-pixel is a first luminance when the gray scale of the sub-pixel is the first gray scale;
determining a second gray scale and a third gray scale according to the first brightness, the gamma curve and the relationship among the first brightness, the second brightness and the third brightness, wherein the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is larger than the third gray scale, the light-emitting brightness of the high-gray-scale sub-pixel is the second brightness, the light-emitting brightness of the low-gray-scale sub-pixel is the third brightness, and the sum of the second brightness and the third brightness is 2 times of the first brightness; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
2. The method of claim 1, wherein the first gray level is a gray level other than a lowest gray level and a highest gray level on the gamma curve.
3. The method of claim 2, wherein the second gray level is the highest gray level, or
The third gray scale is the lowest gray scale, or
The second gray scale and the third gray scale are two different gray scales on the gamma curve except for the lowest gray scale and the highest gray scale respectively.
4. The method of claim 1, wherein for the same color light emitting sub-pixels in each of the sub-display regions, there are j adjacent high gray level sub-pixels and j adjacent low gray level sub-pixels, wherein j is a positive integer.
5. The method of claim 4, wherein j is greater than 2;
in each sub-display area, aiming at the sub-pixels emitting light of the same color, the connecting line of the adjacent j high-gray-scale sub-pixels is a nonlinear curve, and the connecting line of the adjacent j low-gray-scale sub-pixels is a nonlinear curve.
6. The method of claim 5, wherein j equals 4;
in each sub-display area, aiming at the sub-pixels emitting light of the same color, connecting lines of adjacent 4 high-gray-scale sub-pixels form a first quadrangle, and connecting lines of adjacent 4 low-gray-scale sub-pixels form a second quadrangle;
the first quadrilateral is adjacent to the second quadrilateral.
7. The method of claim 5, wherein j equals 6;
in each sub-display area, for the sub-pixels emitting light of the same color, the connecting lines of the adjacent 6 high-gray-scale sub-pixels form a first hexagon, and the connecting lines of the adjacent 6 low-gray-scale sub-pixels form a second hexagon;
the first hexagon is adjacent to the second hexagon.
8. A display device is characterized by comprising a display area, wherein the display area comprises sub-display areas which are arranged in an array, each sub-display area comprises sub-pixels which are alternately arranged and emit light with different colors, and the number of the sub-pixels which emit light with the same color is 2N; aiming at sub-pixels emitting light of the same color, 2N sub-pixels are arrayed along a first direction and a second direction, the first direction is intersected with the second direction, and the 2N sub-pixels comprise N high-gray-scale sub-pixels and N low-gray-scale sub-pixels; n is a positive integer; the display device includes:
the first determining module is configured to determine a first gray scale of a gray scale picture when the gray scale picture is displayed for each sub display area;
a second determining module configured to determine, for the sub-pixels emitting light of the same color, corresponding first luminance according to the first gray scale and the corresponding gamma curve; the luminance of the sub-pixel is a first luminance when the gray scale of the sub-pixel is the first gray scale;
a third determining module configured to determine a second gray scale and a third gray scale according to the first luminance, the gamma curve and a relationship among the first luminance, the second luminance and the third luminance, where the gray scale of the high-gray-scale sub-pixel is the second gray scale, the gray scale of the low-gray-scale sub-pixel is the third gray scale, the second gray scale is greater than the third gray scale, the light-emitting luminance of the high-gray-scale sub-pixel is the second luminance, the light-emitting luminance of the low-gray-scale sub-pixel is the third luminance, and a sum of the second luminance and the third luminance is 2 times of the first luminance; the arrangement rules of two adjacent rows of high-gray-scale sub-pixels in any direction of the sub-pixels emitting light of the same color in at least one luminous color sub-pixel are different, and the arrangement rules of two adjacent rows of low-gray-scale sub-pixels in any direction are different; the arrangement rules of the high-gray-scale sub-pixels emitting light of different colors are different, and the arrangement rules of the low-gray-scale sub-pixels emitting light of different colors are different.
9. A display device comprising a processor and a memory; the memory for storing a computer program; the processor, configured to execute the computer program stored on the memory, to implement the method of any one of claims 1-7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 7.
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