WO2020259150A1 - 显示装置、显示控制方法以及驱动装置 - Google Patents

显示装置、显示控制方法以及驱动装置 Download PDF

Info

Publication number
WO2020259150A1
WO2020259150A1 PCT/CN2020/091770 CN2020091770W WO2020259150A1 WO 2020259150 A1 WO2020259150 A1 WO 2020259150A1 CN 2020091770 W CN2020091770 W CN 2020091770W WO 2020259150 A1 WO2020259150 A1 WO 2020259150A1
Authority
WO
WIPO (PCT)
Prior art keywords
pixel
brightness
display panel
backlight
gray scale
Prior art date
Application number
PCT/CN2020/091770
Other languages
English (en)
French (fr)
Inventor
史天阔
时凌云
张小牤
段欣
孙伟
胡国锋
姬治华
习艳会
孙炎
代斌
李越
侯一凡
孙一郎
刘传军
董学
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/255,989 priority Critical patent/US11308897B2/en
Publication of WO2020259150A1 publication Critical patent/WO2020259150A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/023—Display panel composed of stacked panels
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

Definitions

  • the present disclosure relates to the field of display, and in particular to a display device, a display control method, and a driving device.
  • a display device includes a backlight module and a double-layer display panel, wherein the double-layer display panel may include a sub-panel layer (Sub Cell) and a main panel layer (Main Cell).
  • the display contrast effect can be improved.
  • the display brightness of this kind of display device is low, among which the peak brightness is low, and there are problems of halation and light leakage.
  • the present disclosure provides a display device, a display control method, and a driving device.
  • a display device including: a backlight module, including a plurality of backlight partitions; a first display panel and a second display panel, which are sequentially arranged on the light emitting side of the backlight module, so The second display panel is configured to display an image; wherein the first display panel includes a plurality of pixel regions corresponding to a plurality of backlight subregions, each pixel region includes a plurality of pixel units, and each pixel unit corresponds to the first 2.
  • a processor configured to: obtain a pixel grayscale matrix of the image to be displayed; determine the expected brightness of each pixel based on the pixel grayscale matrix; for each of the backlights Subarea, according to the grayscale information corresponding to the backlight subarea in the pixel grayscale matrix, determine the set light emission brightness of the backlight subarea; based on the light diffusion coefficient of the plurality of backlight subarea, the setting of each backlight subarea is determined Correct the luminous brightness to obtain the first corrected brightness of each backlight subarea; for each backlight subarea, according to the difference between the first corrected brightness and the expected brightness of each pixel in the corresponding pixel area, Determine the gray scale of each pixel unit in the corresponding pixel area; based on the light diffusion coefficient of the multiple backlight partitions and the occlusion coefficient of the first display panel, correct the set luminous brightness of each backlight partition to obtain the The second corrected brightness of each backlight zone, wherein the shading coefficient of the first display panel is determined
  • the processor is further configured to: for each pixel unit in the pixel area, in response to the first corrected brightness of the corresponding backlight partition being higher than the expected brightness of the corresponding pixel, reduce the gray scale of the pixel unit.
  • the processor is further configured to: for each pixel, in response to the second corrected brightness of the corresponding backlight partition being higher than the expected brightness of the corresponding pixel, reduce the gray scale of the pixel.
  • the processor is further configured to: for each backlight partition, according to the statistical distribution of a plurality of pixel gray levels corresponding to each backlight partition in the pixel gray scale matrix or the gray levels of the multiple pixel gray levels The maximum value determines the set brightness of the backlight zone.
  • the processor is further configured to: for each backlight partition, determine the gray scale of the pixel unit according to the difference between the first corrected brightness of the backlight partition and the expected brightness of the corresponding pixel;
  • the gray scale of the unit is smoothed and filtered; based on the light diffusion coefficients of the multiple backlight partitions and the occlusion coefficient of the first display panel after smooth filtering, the set brightness of each backlight partition is corrected to obtain the second Correcting the brightness; adjusting the gray scale of each pixel of the image to be displayed according to the difference between the second corrected brightness of the corresponding backlight zone and the expected brightness of the pixel to compensate for the brightness of the image to be displayed; and after the brightness compensation Perform color correction on the image to be displayed.
  • the processor is further configured to perform uniformity compensation on the operating parameters of each backlight zone.
  • the processor is further configured to: perform uniformity compensation on the gray scale of the pixel unit after smoothing and filtering.
  • a display device including a backlight module; a first display panel and a second display panel for displaying colors, which are sequentially arranged on the light-emitting side of the backlight module, wherein the first display panel
  • the second display panel is configured to display an image
  • the second display panel includes a plurality of pixels, and the plurality of pixels correspond to the color sub-pixels of the image to be displayed one-to-one
  • the first display panel includes a plurality of pixel units, the plurality of pixels
  • the height of each pixel unit is the same as the height of the pixel, the width of the pixel unit is twice the width of the pixel, and at least some rows of pixel units in the first display panel are relative to adjacent rows.
  • the pixel unit is shifted by the width of one pixel; and the processor is configured to: obtain a pixel gray scale matrix of the image to be displayed, and the elements of the pixel gray scale matrix correspond to the plurality of pixels one-to-one; based on the pixel gray scale Matrix, determining the expected brightness of each of the multiple pixels; determining the grayscale value of each pixel unit, so that the grayscale values of adjacent pixel units corresponding to different color sub-pixels of the same pixel of the image to be displayed are different ; Based on the occlusion coefficient of the first display panel after the grayscale is determined, the brightness of each backlight partition is corrected to obtain the third corrected brightness of each backlight partition; for each pixel, according to the first corresponding backlight partition 3. Correct the difference between the brightness and the expected brightness of the corresponding pixel, and adjust the gray scale of the pixel.
  • the pixel units located in the even-numbered rows in the first display panel are shifted by one pixel width relative to the pixel units located in the odd-numbered rows.
  • each group of three pixel units adjacent in a magenta shape in the first display panel corresponds to different color sub-pixel combinations.
  • the processor is further configured to: smoothly filter the determined grayscale value of the pixel unit; based on the occlusion coefficient of the first display panel after smoothing and filtering, correct the brightness of each backlight partition to obtain The third corrected brightness of each backlight partition; for each pixel, the gray scale of the pixel is adjusted according to the difference between the third corrected brightness of the corresponding backlight partition and the expected brightness of the pixel to Perform brightness compensation on the image to be displayed; and perform color correction on the image after brightness compensation.
  • each backlight subarea includes a direct-lit micro light emitting diode array
  • the size of each backlight subarea is an integer multiple of the size of the pixel unit
  • the processor is further configured to: , According to the grayscale information corresponding to the backlight subarea in the pixel grayscale matrix, determine the set light emission brightness of each micro light emitting diode in the backlight subarea; based on the light diffusion coefficient of the micro light emitting diodes in all backlight subarea, The set light-emitting brightness of the micro light emitting diodes in the backlight subarea is corrected to obtain the first corrected brightness of all the backlight subarea; for each backlight subarea, according to the first corrected brightness and the expectations for the pixels in the corresponding pixel area The brightness difference of the brightness determines the gray scale of each pixel unit in the pixel area.
  • the display device includes a backlight module, a first display panel and a second display panel sequentially arranged on the light emitting side of the backlight module.
  • a display panel wherein the backlight module includes a plurality of backlight partitions, the plurality of backlight partitions respectively correspond to a plurality of pixel regions of the first display panel, each pixel region includes a plurality of pixel units, and each pixel unit corresponds to The plurality of pixels of the second display panel, the second display panel is configured to display an image, and the display control method includes: obtaining a pixel grayscale matrix of the image to be displayed, and the elements of the pixel grayscale matrix and The plurality of pixels correspond one to one; based on the pixel gray scale matrix, determine the respective expected brightness of the plurality of pixels; for each of the backlight partitions, according to the gray scale corresponding to the backlight partition in the pixel gray scale matrix Information, determining the set luminous brightness of the backlight zone; based on the light diffusion coefficients of the plurality of backlight zones, correcting the set luminous brightness of each backlight zone to obtain the first corrected brightness of the backlight zone; For each backlight partition, determine the gray scale of each pixel unit
  • the display device includes a backlight module, a first display panel and a second display panel sequentially arranged on the light emitting side of the backlight module.
  • a display panel wherein the second display panel is configured to display an image and the second display panel includes a plurality of pixels, and the plurality of pixels correspond to color sub-pixels of the image to be displayed in a one-to-one correspondence, and the first display panel Comprising a plurality of pixel units, the height of each of the plurality of pixel units is the same as the height of the pixel, the width of the pixel unit is twice the width of the pixel, and at least some rows of the first display panel The pixel unit of the pixel unit is shifted by a width of one pixel relative to the pixel unit of the adjacent row; the display control method includes: obtaining a pixel gray-scale matrix of the image to be displayed, and the elements of the pixel gray-scale matrix are one-to-one with the plurality of pixels Correspondence; based on the pixel grayscale matrix, determine the expected brightness of each of the multiple pixels; determine the grayscale value of each pixel unit, so that the corresponding phase with the different color sub-pixels of the same
  • a driving device including: a memory configured to store instructions; at least one processor: the at least one processor executes instructions stored in the memory to implement implementation according to the present disclosure Example method.
  • a non-transitory computer-readable storage medium storing instructions configured to implement the method according to the embodiment of the present disclosure when executed by at least one processor.
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a light mixing result of a backlight module according to an embodiment of the present disclosure and a correction effect using a first display panel;
  • FIG. 3 is a schematic structural diagram of a specific embodiment of a display device according to the present disclosure.
  • FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another specific embodiment of the display device according to the present disclosure.
  • Fig. 6 is a flowchart of a specific embodiment of a display control method according to the present disclosure.
  • FIG. 7 is a flowchart of another specific embodiment of the display control method according to the present disclosure.
  • Fig. 8 is a schematic structural diagram of a driving device according to the present disclosure.
  • the technical solutions of the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present disclosure.
  • the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments.
  • all other embodiments obtained by those of ordinary skill in the art without creative labor are within the protection scope of the present disclosure.
  • the technical term "gray scale” means a gray scale level, for example, a gray scale value within a gray scale value range of 0 to 255.
  • FIG. 1 is a schematic structural diagram of a display device 100 according to an embodiment of the present disclosure.
  • the present disclosure provides a display device 100, including a backlight module 200, and the backlight module 200 includes a plurality of backlight partitions 210.
  • each backlight subarea 210 may include a direct-lit Mini-LED (Mini-LED) array.
  • the display device 100 further includes a first display panel 310 and a second display panel 320 sequentially arranged on the light emitting side of the backlight module 200.
  • the second display panel 320 is configured to display images.
  • the first display panel 310 includes a pixel area corresponding to each backlight subarea, and the pixel area includes a plurality of pixel units 311. Each pixel unit 311 of the first display panel 310 corresponds to a plurality of pixels of the second display panel 320 321.
  • the display device 200 further includes a processor 400.
  • the processor 400 may be implemented using a system on a chip (SOC), an ASIC (application specific integrated circuit), a microprocessor, or the like.
  • SOC system on a chip
  • ASIC application specific integrated circuit
  • microprocessor or the like.
  • Elements described below as functional blocks that perform various processes can be constituted by circuit blocks, memories, and other large-scale integrated circuits (LSIs) in terms of hardware, and are realized by programs loaded in memories and the like. Therefore, those skilled in the art should understand that the functional block may be implemented in various forms by hardware alone, by software alone, or by a combination of hardware and software, and is not limited to one of these forms.
  • the processor 400 may be configured to: obtain a pixel grayscale matrix of the image to be displayed, and the elements of the pixel grayscale matrix correspond to the pixels 321 of the second display panel 320 one-to-one; based on the pixel grayscale matrix, use the second display
  • the gray scale-brightness curve of the panel 320 determines the expected brightness of each of the multiple pixels.
  • the pixel gray scale matrix may include a gray scale matrix of RGB sub-pixels of all pixels to be displayed in the color image, wherein the pixel gray scale matrix Each element represents the gray scale of the color sub-pixel at the position of the color image to be displayed.
  • the pixel grayscale matrix can be transmitted to the display device 100 by the host as a data source.
  • Mini-LED control data can be generated and transmitted to the driver of the Mini-LED array to generate the first
  • the control data (adjusted grayscale data) of the display panel 310 and the second display panel 320 are transmitted to the first display panel 310 and the second display panel 320 to achieve fine adjustments to them, so that not only the contrast and peak values can be enhanced. Brightness can also reduce halo and light leakage.
  • the grayscale-brightness curve may be, for example, a Gamma curve, which may represent the grayscale-brightness correspondence relationship taking into account the design requirements and hardware performance of the second display panel 320, which may be used to convert the grayscale Is the desired brightness.
  • a desired brightness distribution map of pixels may be used to represent the desired brightness of multiple pixels.
  • the processor 400 may be further configured to: for each of the backlight subarea 210, determine the set light emission brightness in the backlight subarea 210 according to the gray level information corresponding to the backlight subarea 210 in the pixel gray level matrix.
  • each backlight partition 210 may include a Mini-LED array of 10 rows ⁇ 10 columns.
  • the gray level statistics of the sub-pixel gray scale matrix corresponding to the backlight partition 210 may be used. For example, more than 95% of the gray scale is relatively low. If the value is high, all Mini-LEDs can be set to a greater brightness, and the set brightness can be achieved by setting the PWM value and/or current value of the Mini-LED.
  • the maximum value of the gray scale corresponding to the pixel gray scale matrix in the backlight subarea 210 it is also possible to take the maximum value of the gray scale corresponding to the pixel gray scale matrix in the backlight subarea 210, and according to the maximum value, set all Mini-LEDs to the maximum value through the PWM value and/or current value setting.
  • brightness the correspondence between the gray scale and the brightness of the Mini-LED or the corresponding operating parameters (PWM value and/or current value) may be measured in advance or a list may be established for the processor 400 to call.
  • the processor 400 may be further configured to: based on the light diffusion coefficients of the Mini-LEDs in the plurality of backlight partitions 210, correct the set luminous brightness of the Mini-LEDs in each backlight partition 210 to obtain all the backlight partitions 210 The respective first corrected brightness.
  • the gray scale of each pixel unit 311 of the pixel area in the first display panel 310 is determined according to the difference between the first corrected brightness and the expected brightness of each pixel of the corresponding pixel area.
  • all the light sources of the backlight module 200 are based on their respective light-emitting angles (though ideally it is desirable that the light beam of the Mini-LED is linear, but in fact there is diffusion) and the relative positional relationship between each other, light diffusion and corresponding Aliasing.
  • the correction is performed based on the light diffusion coefficients of all the backlight zones 210, and the obtained first corrected brightness takes into account the light diffusion effect, and is more in line with the actual brightness distribution of the light source of, for example, the Mini-LED array.
  • the first corrected brightness of all backlight zones can form a first corrected brightness distribution map, which can be understood as a two-dimensional matrix with the same size as the Mini-LED array, and each element represents the actual brightness at that location.
  • the light diffusion coefficient of each Mini-LED of various Mini-LED arrays can be obtained in advance through various optical simulation simulation software simulations, and stored as a list for the processor 400 to conveniently call.
  • the simulation software can be OPTISWORKS software, TRACEPRO software, etc., which is not specifically limited here.
  • the processor 400 may determine that the first display panel 310 corresponds to the brightness difference between the first corrected brightness of the backlight partition and the expected brightness of the pixels in the corresponding pixel area.
  • the gray scale of the pixel unit 311 in the backlight subarea 210 can compensate for the brightness difference. For example, when the first corrected brightness of a certain backlight subarea 210 is lower than the expected brightness for the pixels of the pixel unit 311 corresponding to the backlight subarea 210, the gray scale of the pixel unit 311 corresponding to the backlight subarea 210 in the first display panel 310 is determined. Order for brightness compensation.
  • the gray scales of all the pixels 311 in the first display panel 310 corresponding to the backlight subarea 210 can be determined, so that the determined gray scale passes all the pixels.
  • the first display panel 310 generates the brightness difference value.
  • the Gamma curve of the first display panel 310 can be used as the brightness difference-determining the gray scale correspondence, and the gray scale of all pixels 311 in the first display panel 310 corresponding to the backlight zone 210 can be determined based on the brightness difference.
  • the function of the first display panel 310 is similar to a light valve that controls the opening degree of each backlight zone separately.
  • the gray levels of all pixels 311 of the first display panel 310 can be set to
  • the predetermined value for example, can be set to the maximum gray scale value, so that the opening degree is maximized.
  • the gray scale for example, is reduced to a compensated gray scale corresponding to the brightness difference on the basis of the preset maximum gray scale value.
  • the solid line in FIG. 2 schematically shows the light mixing result of the backlight module 200.
  • the contrast of the displayed image is poor due to light diffusion.
  • the display peak value of the display device 100 can be improved. While improving the brightness, the contrast and the sharpness of the picture are improved, as shown by the dotted line. Therefore, the adverse effects of light mixing are alleviated, and the display effect is further corrected.
  • the processor 400 may be further configured to: based on the light diffusion coefficients of all the backlight partitions 210 and the shielding coefficient of the first display panel 310, correct the set luminous brightness of each backlight partition 210 to obtain the second correction of the backlight partition. Brightness; For each pixel 321 of the second display panel 320, adjust the grayscale of the pixel 321 according to the brightness difference between the second corrected brightness of the corresponding backlight zone and the expected brightness of the pixel. In this way, the second display panel 320 and the first display panel 310 can be driven respectively according to the adjusted gray scale of each pixel 321 and the determined (or adjusted) gray scale in each pixel unit 311, so as to realize the matching of the two The user’s fine control to achieve the desired brightness distribution.
  • the first display panel 310 plays a corresponding shielding role based on the gray levels of each pixel unit 311, and can be modeled by optical simulation software to obtain in advance the different gray levels of each pixel 311 of the first display panel 310.
  • the corresponding occlusion coefficient is stored as a list for the processor 400 to conveniently call.
  • the optical simulation software can be OPTISWORKS software, TRACEPRO software, etc., which is not specifically limited here.
  • the processor 400 can obtain the occlusion coefficient at each pixel unit 311 of the first display panel 310 based on the (adjusted) gray level determined by each pixel unit 311 of the first display panel 310 by calling a pre-established relationship between grayscale and occlusion coefficient.
  • the second corrected brightness of the backlight zone can be made closer to the backlight module 200 and the first display.
  • the gray scale of the pixel 321 of the second display panel 320 By adjusting the gray scale of the pixel 321 of the second display panel 320, the brightness difference between the second corrected brightness of the backlight partition and the expected brightness of the pixel at the pixel 321 can be compensated, so that for the displayed image, the backlight
  • the actual brightness finally realized by the module 200, the first display panel 310, and the second display panel 320 as a whole is close to the expected brightness, thereby realizing an ideal image display.
  • the processor 400 may be configured to: for each pixel 321 of the second display panel 320, when the second corrected brightness of the corresponding backlight partition of the pixel is higher than the expected brightness of the pixel, Lower the gray scale of the pixel 321.
  • the pixel gray scale matrix can be used to drive the second display panel 320.
  • the pixel gray scale The level matrix corresponds to the gray level of the pixel 321 and reduces the gray level to perform pixel-level brightness compensation.
  • the backlight partition 210, the pixels 311 of the first display panel 310 to the pixels 321 of the second display panel 320 can be scaled from coarse to fine for display brightness.
  • the layer-by-layer adjustment of the display module 200 and/or the second display panel 320 improves the efficiency of the brightness adjustment, improves the effect of the brightness adjustment, and enhances the contrast and peak brightness of the image compared to the brightness adjustment of the display module 200 and/or the second display panel 320 separately. And reduce the adverse effects of halo.
  • FIG. 3 is a schematic structural diagram of a specific embodiment of the display device 400 according to the present disclosure.
  • the display device 400 may include a set brightness determination module 401, a desired brightness determination module 402, a first correction module 403, a first adjustment module 404, a first filter module 405, a second correction module 406, and a The second adjustment module 407 and the first correction module 408.
  • the functions performed by each module can be understood in conjunction with the corresponding steps implemented by the processor 400 above, and will not be repeated here.
  • the set brightness determination module 401 may be configured to: for each backlight zone, determine the set light emission brightness and/or corresponding backlight zone according to the gray scale information corresponding to the backlight zone in the pixel gray scale matrix from the data source Working parameters.
  • the gray scale information may include: the statistical distribution of gray scales in the backlight zone, or the maximum gray scale in the backlight zone.
  • the desired brightness determining module 402 may be configured to determine the desired brightness of each of the multiple pixels based on the pixel gray scale matrix from the data source and using the gray scale-brightness curve of the second display panel.
  • the first correction module 403 may be configured to: based on the light diffusion coefficients of all backlight partitions, correct the set brightness of each backlight partition determined by the set brightness determination module 401 to obtain the first corrected brightness of all backlight partitions.
  • the first adjustment module 404 may be configured to: for each backlight zone, determine the gray scale of the corresponding pixel unit of the first display panel according to the brightness difference between the first corrected brightness and the expected brightness of the pixels in the corresponding pixel area .
  • the first filtering module 405 may be configured to smoothly filter the determined gray scale of the pixel unit of the first display panel. For example, the backlight partition and the pixels of the first display panel may have inaccurate alignment and the alignment deviation may cause block problems.
  • the first filter module 405 determines the gray level of the pixel unit of the first display panel. Smoothing filtering is performed to increase the brightness of the non-smooth portion of the display brightness around the high-brightness position while ensuring that the brightness of the high-brightness position does not decrease, so that the brightness is smoother.
  • the smoothing filtering method may include average filtering, median filtering, Gaussian filtering, etc., which are not specifically limited here.
  • the second correction module 406 may be configured to: based on the light diffusion coefficients and gray scales of all the backlight partitions, the shading coefficient of the first display panel after smoothing and filtering, to correct the set luminous brightness of each backlight partition to obtain the backlight partition The second corrected brightness.
  • the second correction module 406 may perform the correction based on the first correction brightness obtained by the first correction module 403, and further consider the occlusion coefficient of the first display panel after smoothing and filtering the gray scale.
  • the second correction module 406 may call the grayscale-shading coefficient correspondence relationship of the first display panel.
  • the second adjustment module 407 may be configured to: for each pixel of the second display panel, adjust the gray scale of the pixel according to the brightness difference between the second corrected brightness of the corresponding backlight partition and the expected brightness of the pixel to display the image Perform brightness compensation. Considering the shielding effect of the first display panel on light, the second adjustment module 407 compares the expected brightness with the brightness after the shielding of the first display panel, and determines the gray scale of the pixels of the second display panel according to the comparison result. Perform brightness compensation.
  • the first correction module 408 may be configured to perform color correction on the brightness-compensated image. In order to prevent the backlight module and the first display panel from affecting the color, the first correction module 408 is used to perform color correction on the brightness-compensated image to ensure the display effect, such as enhancing the chroma and saturation of the image, and
  • the sub-pixel gray scale matrix that is, the gray scale of each sub-pixel of RGB obtained after the chroma and saturation are enhanced is transmitted to the second display panel for display on the main screen.
  • the grayscale-brightness curve of the second display panel that needs to be fed to the setting brightness determination module 401, the light diffusion coefficient of all Mini-LEDs that need to be fed to the first correction module 403, and the light diffusion coefficients of all Mini-LEDs that need to be fed to the second correction module 406 The corresponding relationship between grayscale and occlusion coefficient can be obtained through experimental simulation in advance so as to be called by these modules.
  • the processor 400 further includes: a first compensation module 409 configured to: perform uniformity compensation on the working parameters corresponding to the set brightness of each backlight zone; and a second compensation module 410 configured to: The uniformity compensation is performed on the smoothed and filtered gray levels of the pixels of the first display panel, as shown by the dashed box in FIG. 3.
  • the Mini-LED array may have uneven brightness when emitting light. For example, the brightness of the Mini-LED at the peripheral position in the Mini-LED array is lower than that of the Mini-LED at the center. This will affect the display effect of the display device.
  • the first compensation module 409 is used to perform uniformity compensation for the set brightness of each backlight zone, so that the backlight module has good brightness uniformity. For similar reasons, it is also possible to perform uniformity compensation on the smoothed and filtered gray levels of the pixels of the first display panel, so that the first display panel also has good brightness uniformity.
  • FIG. 4 is a schematic structural diagram of a display device 500 according to an embodiment of the present disclosure.
  • the present disclosure provides a display device 500.
  • the display device 500 includes: a backlight module 600;
  • the first display panel 710 and the second display panel 720 on the light emitting side, the second display panel 720 is configured to display an image and the second display panel includes a plurality of pixels, each pixel corresponds to a color sub-pixel of the image to be displayed one-to-one; and Processor 800.
  • the host transmits a sub-pixel gray-scale matrix to the display device 500, and the elements of the sub-pixel gray-scale matrix correspond to the pixels of the second display panel 720 one to one, and are processed by the processor 800 to drive the second display Panel 720.
  • the height of the pixel unit 711 of the first display panel 710 is the same as the height of the pixel 721 of the second display panel 720, and the width of the pixel 711 of the first display panel 710 is twice the width of the pixel 721 of the second display panel 720 And, the pixel units 711 of at least a part of the rows of the first display panel 710 are shifted by one pixel (half pixel unit) relative to the pixels of the adjacent rows, as shown in FIG. 4, and the pixels 721 of the second display panel 720 They are aligned in the usual way.
  • the pixel PM k of the k-th row of the second display panel 720 respectively corresponds to the RGB sub-pixels of the k-th row of pixels P kn of the image to be displayed, and k can be a natural number between 1 and the number of rows of the image to be displayed.
  • n can be a natural number ranging from 1 to the number of columns of pixels of the image to be displayed, and represents the column number of the current pixel of the image to be displayed, that is, the pixel PM k in the kth row of the second display panel 720 sequentially corresponds to the R of the pixel P k1 Sub pixel, G sub pixel, B sub pixel, R sub pixel, G sub pixel, B sub pixel of pixel P k2 , R sub pixel, G sub pixel, B sub pixel of pixel P k3 ,..., pixel unit P km R sub-pixel, G sub-pixel, and B sub-pixel in, where m represents the number of columns of the image to be displayed.
  • the first display panel 710 may have a pair of adjacent pixel units 711, and the pair of pixel units 711 may correspond to different sub-pixels of the same pixel of the image to be displayed, such as RG sub-pixel and B sub-pixel, GB sub-pixel and R Sub-pixel, BR sub-pixel, and G sub-pixel.
  • the processor 800 may be configured to: obtain a sub-pixel gray scale matrix of the image to be displayed; based on the sub-pixel gray scale matrix, use the gray scale-brightness curve of the second display panel 720 to determine the respective pixels in the second display panel 720 Desired brightness; determine the grayscale value of each pixel unit in the first display panel 710, so that the grayscale values of adjacent pixel units corresponding to different color sub-pixels of the same pixel of the image to be displayed are different.
  • the technical meanings and acquisition methods of "grayscale-brightness curve” and “desired brightness” have been described in detail in the embodiments in conjunction with FIG. 2 and FIG. 3, and will not be repeated here.
  • the color of the image can be adjusted. Enhanced.
  • the processor 800 may also be configured to: based on the occlusion coefficient of the first display panel 710 after the gray scale is determined, correct the brightness of the backlight subarea to obtain the third corrected brightness of each backlight subarea; for the second display panel 720 For each pixel 721, the gray scale of the pixel 721 is adjusted according to the brightness difference between the third corrected brightness of the corresponding backlight zone and the expected brightness of the pixel. In this way, while enhancing the color of the image, through fine brightness adjustment at the pixel 721 level of the second display panel 720, good brightness compensation can be achieved, so that the compensated brightness distribution is close to the desired brightness distribution.
  • the technical meanings and acquisition methods of "occlusion coefficient" and "corrected brightness” have been described in detail in the embodiments in conjunction with FIG. 2 and FIG. 3, and will not be repeated here.
  • the backlight module 600 may use a light-emitting diode array of ordinary size, or it may use a direct-type Mini-LED array, thereby further improving brightness and contrast.
  • the brightness distribution map of the backlight module 600 can be simulated in advance through optical simulation software.
  • the light diffusion coefficient of the Mini-LED can be obtained by simulation, see the description in conjunction with FIG. 2 and FIG. 3, which will not be repeated here.
  • the Mini-LED array of the backlight module 600 can be divided into a plurality of rectangular backlight zones 610, and the length and width of each backlight zone 610 can be the same as the length and width of the pixels 711 of the first display panel 710.
  • the processor 800 may be further configured to: for each of the backlight partitions 610, determine the backlight partition according to the gray level information corresponding to the backlight partition 610 in the sub-pixel grayscale matrix Set the luminous brightness; based on the light diffusion coefficients of all backlight zones 610, correct the set brightness of each backlight zone 610 to obtain the first corrected brightness corresponding to all backlight zones 610; for each backlight zone 610, according to The brightness difference between the first corrected brightness and the expected brightness of the pixel corresponding to the backlight partition determines the gray scale of the pixel unit 711 in the first display panel 710 corresponding to the backlight partition.
  • the backlight module 600 determine the set brightness of each Mini-LED in the backlight partition 610, correct the set brightness, and determine whether the first display panel 710 and the backlight partition 610
  • the specific manner of the gray scale of the corresponding pixel unit 711 has been described in detail in the corresponding description in conjunction with FIG. 2 and FIG. 3, and will not be repeated here.
  • the brightness of the first display panel 710 may be determined based on the respective brightness differences of the two adjacent backlight partitions 610.
  • the two gray levels of the pixel unit 711 are weighted and summed according to the overlap ratio of the pixel unit 711 and the adjacent backlight subarea 610, and the obtained gray levels are used to drive the pixel unit 711.
  • the pixel units 711 located in the even rows of the first display panel 710 are shifted by half relative to the pixel units 711 located in the odd rows (for example, shifted to the right in the plane shown in FIG. 4).
  • the aspect ratio of the pixel units 711 of the first display panel 710 may be 2:3, and the aspect ratio of the pixels 721 of the second display panel 720 may be 1:3, so that the first display panel 710 is located in an odd number.
  • the first pixel unit 711 in the row corresponds to the first pixel 721 and the second pixel 721 in odd rows in the second display panel 720
  • the first pixel unit 711 in the even rows in the first display panel 710 corresponds to
  • the second pixel 721 and the third pixel 721 of the second display panel 720 can adjust the first display panel 710 to increase the grayscale difference of the pixel units 711 corresponding to different colors, thereby enhancing the color performance and improving display effect.
  • each group of three pixel units 711 adjacent to each other in a magenta shape in the first display panel 710 corresponds to different color sub-pixel combinations, for example, the first pixel unit and the second pixel unit in the first row and the second pixel unit
  • the first pixel unit in the two rows forms such a magenta group, where the first pixel unit in the first row corresponds to the RG sub-pixel of the first pixel in the first row of the image to be displayed, and the second pixel in the first row A pixel unit corresponds to the B sub-pixel of the first pixel of the first row of the image to be displayed and the R sub-pixel of the second pixel of the first row.
  • the first pixel unit of the second row corresponds to the first pixel of the first row of the image to be displayed
  • the GB sub-pixel of one pixel in this way, can perform the gray-scale difference value for different color sub-pixel combinations, thereby avoiding the emphasis on certain color sub-pixels and making it possible to perform balanced enhancement for various colors.
  • the display device 500 may include various modules to implement corresponding functions.
  • the display device 500 may include a desired brightness determination module 502, a third adjustment module 504, a second filtering module 505, a third correction module 506, a fourth adjustment module 507, and a second correction module 508.
  • the desired brightness determining module 502 is configured to determine the desired brightness of each pixel based on the sub-pixel gray scale matrix and using the gray scale-brightness curve of the second display panel.
  • the third adjustment module 504 is configured to determine the gray levels of the pixel units in the first display panel, so that the gray levels of adjacent pixel units corresponding to different sub-pixels of the same pixel of the image to be displayed are different.
  • the second filtering module 505 is configured to smoothly filter the determined gray scale of the pixel unit of the first display panel.
  • the third correction module 506 is configured to correct the brightness of the backlight partition based on the occlusion coefficient of the first display panel after smoothing and filtering the gray scale to obtain the third corrected brightness.
  • the fourth adjustment module 507 is configured to: for each pixel of the second display panel, adjust the gray scale of the pixel according to the brightness difference between the third corrected brightness of the corresponding backlight partition and the expected brightness of the pixel to Perform brightness compensation on the image to be displayed.
  • the second correction module 508 may be configured to perform color correction on the brightness-compensated image.
  • the processing performed by the desired brightness determination module 502, the second filtering module 505, the third correction module 506, the fourth adjustment module 507, and the second correction module 508 are respectively the same as those performed by the desired brightness determination module 402 and the second correction module in FIG.
  • the processing performed by a filtering module 405, a second correction module 406, a second adjustment module 407, and a first correction module 408 are respectively similar, and will not be repeated here.
  • the third adjustment module 504 may be configured to adjust different sub-pixels of the same pixel in the first display panel and the image to be displayed, for example, the RG sub-pixel and B sub-pixel of the same pixel, and the corresponding adjacent pixel units.
  • the gray scale value of is different.
  • the gray level of the pixel unit corresponding to the B sub-pixel is 50-80 lower than the gray level of the pixel unit corresponding to the RG sub-pixel, so that the RG color and B The contrast of colors is more vivid.
  • the reference gray scale of each pixel unit may be preset for the first display panel, and the difference value is determined on the basis of the reference gray scale.
  • the reference gray of each pixel unit of the first display panel can be preset according to the difference between the desired brightness and the brightness of the backlight partition, for example, the difference at each pixel unit of the first display panel. Order.
  • the second filtering module 505 may be configured to smoothly filter the gray levels of the pixel units of the first display panel, so as to avoid the deviation of the relative positions of the backlight partition and the pixel units of the first display panel. Deviation may cause a block problem, in order to ensure that the brightness of the high-brightness position does not decrease, increase the unevenness of the brightness around the high-brightness position to make the brightness smoother.
  • the method of smoothing filtering can include mean filtering, median filtering, Gaussian filtering, etc., which are not specifically limited here.
  • the display device 500 may further include a third compensation module for performing uniformity compensation on the smoothed and filtered gray levels of the pixel units of the first display panel, so that the display brightness has good uniformity.
  • Fig. 6 is a flowchart of a specific embodiment of a display control method according to the present disclosure. As shown in FIG. 6, the present disclosure also provides a display control method, which is applied to a display device, the display device includes a backlight module, a first display panel and a second display panel sequentially arranged on the light emitting side of the backlight module .
  • the backlight module may include a direct-type micro light emitting diode array, and the micro light emitting diode array is divided into a plurality of rectangular backlight partitions, each backlight partition corresponds to a pixel area of the first display panel, and each pixel area includes A plurality of pixel units, each pixel unit of the first display panel corresponds to a plurality of pixels of the second display panel, and the second display panel is configured to display an image.
  • the display control method includes the following steps S601 to S607.
  • the sub-pixel gray-scale matrix of the image to be displayed is acquired, and the elements of the sub-pixel gray-scale matrix correspond to the pixels of the second display panel one-to-one.
  • the sub-pixel gray-scale matrix may represent the gray-scale matrix of RGB sub-pixels of all pixels of the color image to be displayed, and the sub-pixel gray-scale matrix Each element of represents the gray scale of the color sub-pixel at that position of the color image to be displayed.
  • the sub-pixel grayscale matrix can be transmitted as a display device by the host as a data source.
  • Mini-LED control data can be generated and transmitted to the driver of the Mini-LED array to generate the first display panel and the second display panel.
  • the control data (adjusted grayscale data) is transmitted to the first display panel and the second display panel to achieve respective fine adjustments, so that not only the contrast and peak brightness can be enhanced, but also halation and light leakage can be reduced.
  • the grayscale-brightness curve of the second display panel is used to determine the expected brightness of each pixel in the second display panel.
  • the grayscale-brightness curve such as the Gamma curve, may represent the grayscale-brightness correspondence relationship that takes into account the design requirements of the second display panel and the hardware performance, which can be used to convert the grayscale to a desired brightness.
  • the set light emission brightness of the backlight partition is determined according to the gray scale information corresponding to the backlight partition in the sub-pixel gray scale matrix. For example, according to the statistics of the gray scale in the sub-pixel gray scale matrix corresponding to the backlight partition, for example, if the gray scale is higher than 95%, all Mini-LEDs can be set to a higher brightness. -LED's PWM value and/or current value to achieve its set brightness. For another example, it is also possible to take the maximum value of the gray scale corresponding to the sub-pixel gray scale matrix in the backlight partition, and according to the maximum value, set all Mini-LEDs to the maximum brightness by setting the PWM value and/or current value . In some embodiments, the correspondence between the gray scale and the brightness of the Mini-LED or the corresponding operating parameters (PWM value and/or current value) can be measured in advance or a list can be established for calling.
  • step S604 based on the light diffusion coefficients of all backlight subregions, the set brightness of the micro light emitting diodes in each backlight subregion is corrected to obtain the first corrected brightness corresponding to all backlight subregions.
  • all Mini-LEDs in the backlight zone based on their respective light-emitting angles (though ideally it is hoped that the Mini-LED's light beam is straight, but in fact there is diffusion) and the relative positional relationship between each other, light diffusion and Corresponding aliasing.
  • the obtained first corrected brightness takes the light diffusion into account, which is more in line with the actual brightness distribution of the Mini-LED array.
  • the first corrected brightness may be in the form of a first corrected brightness distribution diagram, which may be understood as a two-dimensional matrix with the same size as the backlight partition, and each element represents the actual brightness at that location.
  • the light diffusion coefficient of each Mini-LED of various Mini-LED arrays can be obtained in advance through various optical simulation simulation software simulations, and stored as a list for convenient recall.
  • the optical simulation simulation software can It is OPTISWORKS software, TRACEPRO software, etc., which are not specifically limited here.
  • step S605 for each backlight partition, according to the brightness difference between the first corrected brightness of the backlight partition and the expected brightness of the corresponding pixel, the gray scale of the corresponding pixel unit is determined to compensate for the brightness difference. For example, for a certain backlight partition, if the first corrected brightness is lower than the expected brightness of the corresponding pixel, the gray levels of all pixel units in the first display panel corresponding to the backlight partition are determined to perform brightness compensation. In some embodiments, for example, when the first corrected brightness is lower than the expected brightness by a certain brightness, the gray levels of all pixel units in the first display panel corresponding to the backlight zone can be determined.
  • the Gamma curve of the first display panel can be used as the brightness difference-determining the corresponding relationship between the gray scales, and the gray scales of all pixel units in the first display panel corresponding to the backlight zone can be determined based on the brightness difference.
  • the function of the first display panel is similar to a light valve that controls the opening degree of each backlight zone separately.
  • the gray levels of all pixel units of the first display panel can be set to a predetermined value. , For example, can be set to the maximum grayscale value, so that the maximum opening degree.
  • the gray scale of the pixel unit corresponding to the backlight partition in the first display panel is reduced, for example, on the basis of the preset maximum gray scale value Reduce to the compensation gray scale corresponding to the brightness difference.
  • step S606 based on the light diffusion coefficients of all backlight partitions and the occlusion coefficient of the first display panel after the gray scale is determined, the set brightness of the micro light emitting diodes in each backlight partition is corrected to obtain the second corrected brightness.
  • the first display panel plays a corresponding shielding function based on the gray levels of its individual pixel units, and the corresponding shielding coefficients for different gray levels of each pixel unit of the first display panel can be obtained in advance through simulation modeling and stored as a list.
  • the optical simulation software can be OPTISWORKS software, TRACEPRO software, etc., which is not specifically limited here.
  • the occlusion coefficient at each pixel unit can be easily obtained.
  • the second corrected brightness of the backlight zone can be made closer to the backlight module and the first display panel. The overall actual brightness.
  • step S607 for each pixel of the second display panel, the gray level of the pixel of the second display panel is adjusted according to the brightness difference between the second modified brightness distribution map and the expected brightness distribution map at the pixel.
  • the gray scale of the pixels of the second display panel it is possible to compensate for the brightness difference between the second corrected brightness of the backlight area and the expected brightness of the pixel, so that the display module, the first display panel and the second display The actual display brightness finally realized by the panel as a whole is close to the desired brightness, thereby achieving an ideal image display.
  • the brightness of the display device can be adjusted from coarse to fine layer by layer from the pixels of the first display panel to the pixels of the second display panel (the sub-pixel level of the image).
  • the brightness adjustment of the display module and/or the second display panel improves the efficiency of brightness adjustment, improves the effect of brightness adjustment, enhances the contrast and peak brightness of the image, and reduces the adverse effects of halo.
  • FIG. 7 is a flowchart of another specific embodiment of the display control method according to the present disclosure.
  • the present disclosure also provides a display control method, which is applied to a display device, the display device includes a backlight module, a first display panel and a second display panel sequentially arranged on the light-emitting side of the backlight module , wherein the second display panel is configured to display images and the pixels of the second display panel correspond to the color sub-pixels of the image to be displayed one-to-one, and the height of the pixel unit of the first display panel corresponds to the pixel of the second display panel.
  • the width of the pixel unit of the first display panel is twice the width of the pixel of the second display panel, and at least some rows of pixels in the first display panel are offset by one pixel width relative to the pixels of adjacent rows.
  • the display control method includes the following steps S701 to S705.
  • step S701 the sub-pixel gray-scale matrix of the image to be displayed is acquired, and the elements of the sub-pixel gray-scale matrix correspond to the pixels of the second display panel one-to-one.
  • step S702 based on the sub-pixel grayscale matrix, the grayscale-brightness curve of the second display panel is used to determine the expected brightness of each of the multiple pixels.
  • the technical meanings and acquisition methods of "grayscale-brightness curve” and “desired brightness distribution graph” have been described in detail in the embodiments of the present disclosure, and will not be repeated here.
  • step S703 the grayscale values of adjacent pixel units corresponding to different sub-pixels of the same pixel of the image to be displayed in the first display panel are differentiated to determine the grayscale value of each pixel unit of the first display panel .
  • the gray level of the pixel unit corresponding to the B sub-pixel is 50-80 lower than the gray level of the pixel unit corresponding to the RG sub-pixel, so that the RG color and the B color The contrast is sharper.
  • the reference gray scale of each pixel unit may be preset for the first display panel, and the difference value is determined on the basis of the reference gray scale.
  • the reference gray of each pixel unit of the first display panel can be preset according to the difference between the desired brightness and the brightness of the backlight partition, for example, the difference at each pixel unit of the first display panel. Order.
  • step S704 based on the occlusion coefficient of the first display panel after the gray scale is determined, the brightness of the backlight partition is corrected to obtain the third corrected brightness.
  • step S705 for each pixel of the second display panel, the gray scale of the pixel of the second display panel is adjusted according to the brightness difference between the third corrected brightness and the desired brightness.
  • Fig. 8 shows a schematic structural diagram of a driving device according to another embodiment of the present disclosure.
  • the driving device 800 may include: at least one processor 8001; and a memory 8002.
  • the memory 8002 can store instructions.
  • At least one processor 8001 executes instructions stored in the memory 8002 to implement the driving method according to the embodiment of the present disclosure.
  • the driving device 800 can implement various functions of the exemplary driving method according to the embodiment of the present disclosure. For example, refer to FIG. 6 above. And the driving method described in FIG. 7. For brevity, I won't repeat them here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示装置（100）及显示控制方法，显示装置（100）包括背光模组（200）、第一显示面板（310）和第二显示面板（320）及处理器（400）。处理器（400）配置为：获取待显示图像的像素灰阶矩阵（S601）；基于像素灰阶矩阵，利用第二显示面板的灰阶-亮度曲线确定每个像素的期望亮度(S602)；根据像素灰阶矩阵中与背光分区对应的灰阶信息，确定背光分区的设定发光亮度(S603)；基于多个背光分区的光扩散系数，得到每个背光分区的第一修正亮度(S604)；根据第一修正亮度和对应期望亮度之间的亮度差异，确定像素单元的灰阶(S605)；基于背光分区的光扩散系数及第一显示面板的遮挡系数，得到背光分区的第二修正亮度；根据第二修正亮度和期望亮度之间的亮度差，调整像素的灰阶(S606)。

Description

显示装置、显示控制方法以及驱动装置
本申请要求于2019年6月25日提交的、申请号为201910556273.7的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及显示领域，尤其涉及一种显示装置、显示控制方法以及驱动装置。
背景技术
一种显示装置包括背光模组和双层显示面板，其中双层显示面板可以包括子面板层(Sub Cell)和主面板层(Main Cell)。通过对双层显示面板的子面板层进行亮度调控，并对主面板层进行精细调控，可以提升显示对比度的效果。但这种显示装置的显示亮度较低，其中峰值亮度较低，且存在光晕问题和漏光问题。
发明内容
本公开提供了一种显示装置、显示控制方法以及驱动装置。
根据本公开的第一方案，提供了一种显示装置，包括：背光模组，包括多个背光分区；第一显示面板和第二显示面板，依次设置在所述背光模组的出光侧，所述第二显示面板配置为显示图像；其中所述第一显示面板包括与多个背光分区分别对应的多个像素区域，每个像素区域包括多个像素单元，每个像素单元对应于所述第二显示面板的多个像素；以及处理器，被配置为：获取待显示图像的像素灰阶矩阵；基于所述像素灰阶矩阵，确定所述每个像素的期望亮度；对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度；基于所述多个背光分区的光扩散系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述每个背光分区的第一修正亮度；对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的每个像素的期望亮度之间的差异，确定所述对应像素区域中每个像素单元的灰阶；基于多个背光分区的光扩散系数以及第一显示面板的遮挡系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述每个背光分区的第二修正亮度，其中所述第一显示面板的遮挡系数是利用所述每个像素单元的灰阶确定的；以及根据对应背光分区的所述第 二修正亮度和针对对应像素单元的像素的期望亮度之间差异，调整所述待显示图像所述每个像素的灰阶，以便所述第二显示面板以调整后的灰阶显示所述待显示图像。
例如，所述处理器还配置为：对于像素区域中的每个像素单元，响应于对应背光分区的所述第一修正亮度高于对应像素的期望亮度，降低所述像素单元的灰阶。
例如，所述处理器还配置为：对于每个像素，响应于对应背光分区的所述第二修正亮度高于对应像素的期望亮度，降低所述像素的灰阶。
例如，所述处理器还配置为：对于每个背光分区，根据所述像素灰阶矩阵中与所述每个背光分区对应的多个像素灰阶的统计分布或多个像素灰阶的灰阶最大值，确定该背光分区的设定发光亮度。
例如，所述处理器还配置为：对于每个背光分区，根据所述背光分区的第一修正亮度和对应像素的期望亮度之间的差异，确定所述像素单元的灰阶；对确定的像素单元的灰阶进行平滑滤波；基于所述多个背光分区的光扩散系数以及基于平滑滤波后的第一显示面板的遮挡系数，对各个背光分区的所述设定亮度进行修正，以得到第二修正亮度；根据对应背光分区的所述第二修正亮度和像素的期望亮度之间的差异，调整所述待显示图像每个像素的灰阶，以对待显示图像进行亮度补偿；以及对亮度补偿后的待显示图像进行色彩校正。
例如，所述处理器还配置为：对各个背光分区的工作参数进行均一性补偿。
例如，所述处理器还配置为：对经平滑滤波后的像素单元的灰阶进行均一性补偿
根据本公开的第二方案，提供了一种显示装置，包括背光模组；依次设置在所述背光模组的出光侧的第一显示面板和显示色彩的第二显示面板，其中，所述第二显示面板配置为显示图像且第二显示面板包括多个像素，所述多个像素与待显示图像的色彩子像素一一对应；所述第一显示面板包括多个像素单元，所述多个像素单元的每一个的高度与所述像素的高度相同，所述像素单元的宽度是所述像素的宽度的2倍，所述第一显示面板中至少部分行的像素单元相对于相邻行的像素单元错位一个像素的宽度；以及处理器，其配置为：获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；基于所述像素灰阶矩阵，确定所述多个像素各自的期望亮度；确定所述各个像素单元的灰阶值，以使与待显示图像的同个像素的不同色彩子像素对应的相邻像素单元的灰阶值不同；基于确定灰阶后的第一显示面板的遮挡系数，修正所述每个背光 分区的亮度，以得到每个背光分区的第三修正亮度；对于所述每个像素，根据对应背光分区的第三修正亮度与对应像素的所述期望亮度之间的差异，调整所述像素的灰阶。
例如，所述第一显示面板中位于偶数行的像素单元相对于位于奇数行的像素单元错位一个像素的宽度。
例如，所述第一显示面板中以品字形相邻的每一组三个像素单元分别对应不同的色彩子像素组合。
例如，所述处理器还配置为：对所确定的像素单元的灰阶值进行平滑滤波；基于进行平滑滤波后的第一显示面板的遮挡系数，修正每个所述背光分区的亮度，以得到每个所述背光分区的第三修正亮度；对于所述每个像素，根据对应背光分区的第三修正亮度与所述像素的所述期望亮度之间的差异，调整该像素的灰阶，以对待显示图像进行亮度补偿；以及对亮度补偿后的图像进行色彩校正。
例如，所述每个背光分区包括直下式微型发光二极管阵列，且每个背光分区的尺寸为所述像素单元的尺寸的整数倍，并且所述处理器还配置为：对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区中每个微型发光二极管的设定发光亮度；基于所有背光分区中微型发光二极管的光扩散系数，对各个背光分区中的微型发光二极管的所述设定发光亮度进行修正，以得到所有背光分区的第一修正亮度；对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的像素的期望亮度的亮度差异，确定所述像素区域中每个像素单元的灰阶。
根据本公开的第三方案，还提供了一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在所述背光模组的出光侧的第一显示面板和第二显示面板，其中，所述背光模组包括多个背光分区，多个背光分区分别对应所述第一显示面板的多个像素区域，每个像素区域包括多个像素单元，每个像素单元对应于所述第二显示面板的多个像素，所述第二显示面板配置为用于显示图像，所述显示控制方法包括：获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；基于所述像素灰阶矩阵，确定多个像素各自的期望亮度；对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度；基于所述多个背光分区的光扩散系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述背光分区的第一修正亮度；对于每个背光分区，根据所述第一修正亮度和对应针对像素区域的像素的期望亮度之间的差异，确定所述对应像素区域中每个像素单元的灰阶； 基于所述多个背光分区的光扩散系数以及第一显示面板的遮挡系数，对各个背光分区的所述设定亮度进行修正，以得到所述每个背光分区的第二修正亮度，其中所述第一显示面板的遮挡系数是利用所述每个像素单元的灰阶确定的；以及对于第二显示面板的每个像素，根据对应背光分区的所述第二修正亮度和所述像素的期望亮度之间的差异，调整所述像素的灰阶。
根据本公开的第四方案，还提供了一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在所述背光模组的出光侧的第一显示面板和第二显示面板，其中，所述第二显示面板配置为用于显示图像且第二显示面板包括多个像素，所述多个像素与待显示图像的色彩子像素一一对应，所述第一显示面板包括多个像素单元，所述多个像素单元的每一个高度与所述像素的高度相同，所述像素单元的宽度是所述像素的宽度的2倍，所述第一显示面板中至少部分行的像素单元相对于相邻行的像素单元错位一个像素的宽度；所述显示控制方法包括：获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；基于所述像素灰阶矩阵，确定所述多个像素各自的期望亮度；确定所述各个像素单元的灰阶值，以使与待显示图像的同个像素的不同色彩子像素对应的相邻像素单元的灰阶值不同；基于确定灰阶后的第一显示面板的遮挡系数，修正所述背光分区的亮度，以得到每个背光分区的第三修正亮度；对于所述每个像素，根据对应背光分区的第三修正亮度与所述像素的期望亮度之间的差异，调整所述像素的灰阶。
根据本公开的第五方案，还提供了一种驱动装置，包括：存储器，配置为存储指令；至少一个处理器：所述至少一个处理器执行存储在存储器中的指令，以实现根据本公开实施例的方法。
根据本公开的第六方案，还提供了一种非暂时性计算机可读存储介质，存储有指令，所述指令配置为在被至少一个处理器执行时实现根据本公开实施例所述的方法。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为根据本公开实施例的显示装置的结构示意图；
图2为根据本公开实施例的背光模组的混光结果以及利用第一显示面板的修正效果的示意性图示；
图3为根据本公开的显示装置的一个具体实施例结构示意图；
图4为根据本公开实施例的显示装置的结构示意图；
图5为根据本公开的显示装置的另一个具体实施例的结构示意图；
图6为根据本公开的显示控制方法的一个具体实施例的流程图；
图7为根据本公开的显示控制方法的另一个具体实施例的流程图；以及
图8为根据本公开的驱动装置的结构示意图。
具体实施方式
为了使得本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。在本文中，技术术语“灰阶”表示灰阶水平，例如0到255的灰阶值范围内的灰阶值。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
为了保持本公开实施例的以下说明清楚且简明，本公开省略了已知功能和已知部件的详细说明。
图1为根据本公开实施例的显示装置100的结构示意图。如图1所示，本公开提供了一种显示装置100，包括：背光模组200，背光模组200包括多个背光分区210。例如，每个背光分区210可以包括直下式微型发光二极管(Mini-LED)阵列。显示装置100还包括依次设置在背光模组200的出光侧的第一显示面板310和第二显示面板320。第二 显示面板320配置为显示图像。第一显示面板310包括分别与每个背光分区对应的像素区域，像素区域包括多个像素单元311，第一显示面板310的每个像素单元311对应于所述第二显示面板320的多个像素321。显示装置200还包括处理器400。
在一些实施例中，处理器400可以利用片上系统(SOC)、ASIC(特定用途集成电路)、微型处理器等来实现。下文中描述为执行各种处理的功能块的元件在硬件方面可以由电路块、存储器和其他大规模集成电路(LSI)构成，并且由在存储器等中加载的程序实现。因此，本领域技术人员应当理解，功能块可以单独通过硬件、单独通过软件、或者通过硬件和软件的组合以各种形式来实现，并且不限于这些形式之一。
该处理器400可以被配置为：获取待显示图像的像素灰阶矩阵，像素灰阶矩阵的元素与第二显示面板320的像素321一一对应；基于所述像素灰阶矩阵，利用第二显示面板320的灰阶-亮度曲线，确定多个像素各自的期望亮度。例如，在第二显示面板320设有彩色滤光片以便显示彩色图像的情况下，像素灰阶矩阵可以包括待显示彩色图像的所有像素的RGB子像素的灰阶矩阵，其中像素灰阶矩阵的每个元素表示待显示彩色图像的该位置处的色彩子像素的灰阶。该像素灰阶矩阵可由主机作为数据源传输为所述显示装置100，经过处理器400的如下各种处理之后，可以分别生成Mini-LED控制数据并传输给Mini-LED阵列的驱动器，生成第一显示面板310和第二显示面板320的控制数据(调整后的灰阶数据)并传输给第一显示面板310和第二显示面板320以实现对其的分别精细调控，使得不仅可以增强对比度和峰值亮度，还可以降低光晕和漏光。在一些实施例中，所述灰阶-亮度曲线可以是例如Gamma曲线，可以表示考虑到了第二显示面板320的设计要求和硬件性能的灰阶-亮度对应关系，其可以用于将灰阶转换为期望的亮度。此外，本领域技术人员可以理解，可以使用像素的期望亮度分布图来表示多个像素的期望亮度。
该处理器400可以进一步配置为：对于每个所述背光分区210，可以根据像素灰阶矩阵中与该背光分区210对应的灰阶信息，确定该背光分区210中的设定发光亮度。例如，每个背光分区210中可以包括10行×10列的Mini-LED阵列，可以根据该背光分区210对应的子像素灰阶矩阵中灰阶的统计情况，例如，95％以上灰阶为较高值，则可以将所有Mini-LED均设置为较大亮度，可以通过设定Mini-LED的PWM值和/或电流值来实现其设定亮度。再例如，也可以取该背光分区210中的像素灰阶矩阵对应的灰阶的最大值，并根据该最大值，将所有Mini-LED经由PWM值和/或电流值的设定来设置为 最大亮度。在一些实施例中，灰阶与Mini-LED的亮度或相应工作参数(PWM值和/或电流值)之间的对应关系可以预先测量得到或建立列表以供处理器400调用。
该处理器400可以进一步配置为：基于多个背光分区210中Mini-LED的光扩散系数，对各个背光分区210中的Mini-LED的所述设定发光亮度进行修正，以得到所有背光分区210各自的第一修正亮度。对于每个背光分区210，根据所述第一修正亮度和针对对应像素区域的每个像素的期望亮度之间的差异，确定第一显示面板310中该像素区域的各个像素单元311的灰阶。例如，背光模组200的所有光源基于各自的发光角度(虽然理想上希望Mini-LED的光束是直线的，但实际上有扩散)以及彼此之间的相对位置关系，会发生光线的扩散和相应混叠。基于所有背光分区210的光扩散系数进行修正，所得到的第一修正亮度考虑到光扩散作用，更符合例如Mini-LED阵列的光源的实际亮度分布。所有背光分区的第一修正亮度可以构成第一修正亮度分布图，第一修正亮度分布图可以理解为尺寸与Mini-LED阵列的尺寸相同的二维矩阵，每个元素代表该处的实际亮度。在一些实施例中，各种Mini-LED阵列的每个Mini-LED的光扩散系数可以通过各种光学模拟仿真软件模拟预先得到，并存储为列表，以供处理器400方便地调用，光学模拟仿真软件可以为OPTISWORKS软件、TRACEPRO软件等，在此不做具体限定。
对于背光模组200的每个背光分区210，处理器400可以根据该背光分区的第一修正亮度和针对对应像素区域的像素的期望亮度之间的亮度差异，确定所述第一显示面板310对应于该背光分区210的像素单元311的灰阶，以弥补该亮度差异。例如，某一背光分区210的第一修正亮度低于针对对应于该背光分区210的像素单元311的像素的期望亮度时，确定第一显示面板310中与背光分区210对应的像素单元311的灰阶，以进行亮度补偿。在一些实施例中，例如第一修正亮度比期望亮度低了某亮度时，可以确定该背光分区210对应的第一显示面板310中的所有像素311的灰阶，使得所确定的灰阶通过所述第一显示面板310生成该亮度差值。具体说来，可以利用例如第一显示面板310的Gamma曲线作为亮度差值-确定灰阶的对应关系，基于亮度差值来确定第一显示面板310中对应该背光分区210的所有像素311的灰阶。实际上，第一显示面板310的作用类似在对每个背光分区的开启程度分别进行控制的光阀，在一些实施例中，开始可以将第一显示面板310的所有像素311的灰阶设置为预定值，例如可以设置为最大灰阶值，使得其开启程度最大。对于每个背光分区210，在该背光分区的第一修正亮度高于对应像素区域的像素的期望亮度的情况下，降低所述第一显示面板310中与该背光分区210 对应的像素单元311的灰阶，例如在预设的最大灰阶值的基础上降低到与亮度差值对应的补偿灰阶。
图2中的实线示意性示出了背光模组200的混光结果。如图2中实线所示，由于光扩散作用导致显示图像的对比度较差，通过调整第一显示面板310的像素单元311的灰阶，例如降低灰阶，可以在提升显示装置100的显示峰值亮度的同时改善对比度，提高画面锐度，如虚线所示。因此缓解了混光现象的不利影响，从而进一步修正显示效果。
该处理器400可以进一步配置为：基于所有背光分区210的光扩散系数以及第一显示面板310的遮挡系数，对各个背光分区210的设定发光亮度进行修正，以得到该背光分区的第二修正亮度；对于第二显示面板320的每个像素321，根据对应背光分区的第二修正亮度和该像素的期望亮度的亮度差异，调整该像素321的灰阶。如此，可以根据调整后的每个像素321的灰阶以及在各所述像素单元311的确定(或者调整后的)灰阶分别驱动第二显示面板320和第一显示面板310，从而实现对两者的精细控制，以实现期望亮度分布。具体说来，第一显示面板310基于其各个像素单元311的灰阶起到相应的遮挡作用，可以通过光学模拟仿真软件建模，预先得到第一显示面板310的每个像素311不同灰阶的对应遮挡系数，并存储为列表，以供处理器400方便地调用。光学模拟仿真软件可以为OPTISWORKS软件、TRACEPRO软件等，在此不做具体限定。处理器400通过调用预先建立的灰阶-遮挡系数关系，基于第一显示面板310的各个像素单元311所确定的(调整后的)灰阶，可以得到其各个像素单元311处的遮挡系数。如此，通过综合考虑所有背光分区210的光扩散系数以及灰阶确定(调整)后的第一显示面板310的遮挡系数，可以使得背光分区的第二修正亮度更接近背光模组200和第一显示面板310作为整体的实际亮度分布。通过调整第二显示面板320的像素321的灰阶，可以对背光分区的第二修正亮度和像素的期望亮度中在该像素321处的亮度差异进行补偿，以使得对于显示图像而言，由背光模组200、第一显示面板310和第二显示面板320作为整体最终实现的实际亮度接近于期望亮度，从而实现理想的图像显示。
在一些实施例中，所述处理器400可以配置为：对于第二显示面板320的每个像素321，在该像素的对应背光分区的第二修正亮度高于该像素的期望亮度的情况下，降低该像素321的灰阶。例如，像素灰阶矩阵可以被用于驱动所述第二显示面板320，对于各个像素321，在像素的对应背光分区的第二修正亮度高于该像素的期望亮度的情况下， 可以在像素灰阶矩阵对应于该像素321的灰阶的基础上降低灰阶，以进行像素级别的亮度补偿。
通过根据本公开实施例的显示装置100，可以针对显示亮度进行背光分区210、第一显示面板310的像素311到第二显示面板320的像素321(图像的子像素级别)级别的由粗到细的逐层调整，由此相较单独对显示模组200和/或第二显示面板320的亮度调整，提高了亮度调整的效率，提升了亮度调整的效果，增强了图像的对比度和峰值亮度，且降低了光晕的不良影响。
图3为根据本公开的显示装置400的一个具体实施例的结构示意图。如图3所示，，显示装置400可以包括设定亮度确定模块401、期望亮度确定模块402、第一修正模块403、第一调整模块404、第一滤波模块405、第二修正模块406、第二调整模块407和第一校正模块408。各个模块执行的功能可以结合上文中处理器400所实现的相应步骤来理解，在此不赘述。
设定亮度确定模块401可以配置为：对于每个背光分区，根据来自数据源的像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度和/或相应的工作参数。灰阶信息可以包括：该背光分区中灰阶的统计分布情况，或者该背光分区中的灰阶最大值。
期望亮度确定模块402可以配置为：基于来自数据源的像素灰阶矩阵，利用第二显示面板的灰阶-亮度曲线，确定多个像素各自的期望亮度。
第一修正模块403可以配置为：基于所有背光分区的光扩散系数，对由设定亮度确定模块401确定的各个背光分区的设定亮度进行修正，以得到所有背光分区的第一修正亮度。
第一调整模块404可以配置为：对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的像素的期望亮度之间的亮度差异，确定第一显示面板的对应像素单元的灰阶。
第一滤波模块405可以配置为：对确定的第一显示面板的像素单元的灰阶进行平滑滤波。例如，背光分区与第一显示面板的像素可能会存在对位不精确以及由该对位偏差可能会引起块状问题，通过第一滤波模块405对确定的第一显示面板的像素单元的灰阶进行平滑滤波，以在保证高亮度位置的亮度不下降的情况下，提高在高亮度位置的周边 显示亮度不平滑部分的亮度，使得亮度更加平滑。例如，平滑滤波的方法可以包括均值滤波、中值滤波、高斯滤波等多种，在此不做具体限定。
第二修正模块406可以配置为：基于所有背光分区的光扩散系数以及灰阶进行平滑滤波后的第一显示面板的遮挡系数，对各个背光分区的设定发光亮度进行修正，以得到该背光分区的第二修正亮度。在一些实施例中，第二修正模块406可以在第一修正模块403得到的第一修正亮度的基础上，进一步考虑灰阶进行平滑滤波后的第一显示面板的遮挡系数，来执行修正。具体说来，第二修正模块406可以调用第一显示面板的灰阶-遮挡系数对应关系。
第二调整模块407可以配置为：对于第二显示面板的每个像素，根据对应背光分区的第二修正亮度和像素的期望亮度之间的亮度差异，调整该像素的灰阶，以对待显示图像进行亮度补偿。考虑第一显示面板对光的遮挡作用，由第二调整模块407将期望亮度和经过第一显示面板遮挡后的亮度进行比较，并根据比较结果来确定第二显示面板的像素的灰阶，以进行亮度补偿。
第一校正模块408可以配置为：对亮度补偿后的图像进行色彩校正。为防止背光模组和第一显示面板对色彩的影响，利用第一校正模块408对亮度补偿后的图像进行色彩校正，以保证显示效果，例如对图像的色度和饱和度进行增强，并将色度和饱和度增强后所得到的子像素灰阶矩阵(也就是RGB各个子像素的灰阶)传输给第二显示面板，以供在主屏幕上的显示。
上文中，需要馈送到设定亮度确定模块401的第二显示面板的灰阶-亮度曲线、需要馈送到第一修正模块403的所有Mini-LED的光扩散系数以及需要馈送到第二修正模块406的灰阶-遮挡系数对应关系，都可以预先通过实验仿真来得到，以便由这些模块调用。
在一些实施例中，处理器400还包括：第一补偿模块409，其配置为：对各个背光分区的设定亮度相应的工作参数进行均一性补偿；和第二补偿模块410，其配置为：对所述第一显示面板的像素的平滑滤波后的灰阶进行均一性补偿，如图3中的虚线框所示。由于制造工艺等的限制，Mini-LED阵列在发光时可能会存在亮度不均匀的问题，例如，Mini-LED阵列中周边位置的Mini-LED的发光亮度低于中心位置的Mini-LED的发光亮度，这会影响显示装置的显示效果，第一补偿模块409用于对各背光分区的设定亮度进行均一性补偿，以使背光模组具有良好的亮度均一性。基于类似的原因，也可以对所述 第一显示面板的像素的平滑滤波后的灰阶进行均一性补偿，从而使得第一显示面板也具有良好的亮度均一性。
图4为根据本公开实施例的显示装置500的结构示意图，如图4所示，本公开提供了一种显示装置500，显示装置500包括：背光模组600；依次设置在背光模组600的出光侧的第一显示面板710和第二显示面板720，第二显示面板720配置为显示图像且第二显示面板包括多个像素，每个像素与待显示图像的色彩子像素一一对应；以及处理器800。例如，由主机向所述显示装置500传输子像素灰阶矩阵，该子像素灰阶矩阵的元素与第二显示面板720的像素一一对应，且经过处理器800处理后用于驱动第二显示面板720。其中，第一显示面板710的像素单元711的高度与第二显示面板720的像素721的高度相同，第一显示面板710的像素711的宽度是第二显示面板720的像素721的宽度的2倍，并且，第一显示面板710的至少部分行的像素单元711相对于相邻行的像素错位一个像素(半个像素单元)的宽度，如图4所示，而第二显示面板720的像素721则按照惯常方式对齐排布。也就是说，第二显示面板720的第k行的像素PM k分别对应于待显示图像的第k行像素P kn的RGB子像素，k可取1到待显示图像的行数之间的自然数，n可取1到待显示图像的像素的列数的自然数，且表示待显示图像的当前像素的列序号，也就是，第二显示面板720的第k行像素PM k依次对应于像素P k1的R子像素、G子像素、B子像素，像素P k2的R子像素、G子像素、B子像素，像素P k3的R子像素、G子像素、B子像素，……，像素单元P km的R子像素、G子像素、B子像素，其中，m表示待显示图像的列数。第一显示面板710可以存在相邻的像素单元711对，该对像素单元711可以与待显示图像的同个像素的不同子像素分别对应，例如RG子像素和B子像素、GB子像素和R子像素、BR子像素和G子像素。
处理器800可以配置为：获取待显示图像的子像素灰阶矩阵；基于所述子像素灰阶矩阵，利用第二显示面板720的灰阶-亮度曲线，确定第二显示面板720中像素各自的期望亮度；确定第一显示面板710中各个像素单元的灰阶值，以使与待显示图像的同个像素的不同色彩子像素对应的相邻像素单元的灰阶值不同。“灰阶-亮度曲线”、“期望亮度”的技术含义和获取方式在结合图2和图3的实施例中已经详细说明，在此不赘述。通过对所述第一显示面板710中与待显示图像的同个像素的不同子像素，例如RG子像素和B子像素，使得对应的相邻像素单元711的灰阶不同，可以对图像色彩进行增强。
处理器800还可以配置为：基于灰阶确定后的第一显示面板710的遮挡系数，修正背光分区的亮度，以得到每个背光分区的第三修正亮度；对于所述第二显示面板720的每个像素721，根据对应背光分区的第三修正亮度与该像素的期望亮度之间的亮度差异，调整该像素721的灰阶。如此，在对图像色彩进行增强的同时，通过在第二显示面板720的像素721级别的精细亮度调节，可以实现良好的亮度补偿，使得补偿后的亮度分布接近期望亮度分布。“遮挡系数”、“修正亮度”的技术含义和获取方式在结合图2和图3的实施例中已经详细说明，在此不赘述。
在一些实施例中，背光模组600可以采用普通尺寸的发光二极管阵列，其也可以采用直下式的Mini-LED阵列，从而进一步提高亮度和对比度。所述背光模组600的亮度分布图可以预先通过光学仿真软件模拟得到。采用直下式的Mini-LED阵列的情况下，例如，可以考虑到Mini-LED的光扩散系数模拟得到，参见结合图2和图3的描述，在此不赘述。如图4所示，背光模组600的Mini-LED阵列可以划分为多个矩形的背光分区610，每个背光分区610的长度和宽度可以是第一显示面板710的像素711的长度和宽度的i倍和j倍(i和j分别为自然数)，例如，i可以取3而j可以取2。在一些实施例中，所述处理器800还可以配置为：对于每个所述背光分区610，根据所述子像素灰阶矩阵中与该背光分区610对应的灰阶信息，确定该背光分区的设定发光亮度；基于所有背光分区610的光扩散系数，对各个背光分区610的所述设定亮度进行修正，以得到所有背光分区610对应的第一修正亮度；对于每个背光分区610，根据所述第一修正亮度和与该背光分区对应的像素的期望亮度之间的亮度差异，确定所述第一显示面板710中与该背光分区对应的像素单元711的灰阶。在采用直下式Mini-LED阵列作为背光模组600的示例下，确定该背光分区610中每个Mini-LED的设定亮度、修正设定亮度以及确定第一显示面板710中与该背光分区610对应的像素单元711的灰阶的具体方式在结合图2和图3的相应描述中已经详细说明，在此不赘述。在第一显示面板710中的某个像素单元711对应于相邻的两个背光分区610的情况下，可以分别基于相邻的两个背光分区610各自的亮度差异来确定第一显示面板710的该像素单元711的两个灰阶，并根据该像素单元711与相邻背光分区610的重叠比例对该确定的两个灰阶进行加权求和，所得的灰阶用于驱动该像素单元711。
在一些实施例中，如图4所示，第一显示面板710中位于偶数行的像素单元711相对于位于奇数行的像素单元711错位(例如图4所示的平面中向右错位)半个像素单元 711的宽度。例如，第一显示面板710的像素单元711的横高度比可以为2∶3，第二显示面板720的像素721的横高度比可以为1∶3，如此设置使得第一显示面板710中位于奇数行的第一个像素单元711对应于第二显示面板720中的位于奇数行的第一个像素721和第二个像素721，第一显示面板710中位于偶数行的第一个像素单元711对应于第二显示面板720的第二个像素721和第三个像素721，使得可以通过调控第一显示面板710来增加对应不同颜色的像素单元711的灰阶差异，从而增强色彩的表现能力，提升显示效果。例如，第一显示面板710中以品字形相邻的每一组三个像素单元711分别对应不同的色彩子像素组合，例如，第一行的第一个像素单元和第二个像素单元以及第二行的第一个像素单元就构成这样的品字形组，其中，第一行的第一个像素单元对应待显示图像的第一行第一个像素的RG子像素，第一行的第二个像素单元对应待显示图像的第一行第一个像素的B子像素和第一行第二个像素的R子像素，第二行的第一个像素单元对应待显示图像的第一行第一个像素的GB子像素，如此，可以针对不同的色彩子像素组合分别进行灰阶差异取值，从而避免对某种色彩子像素的偏重，使得可以针对各种色彩进行均衡的增强。
在一些实施例中，如图5所示，显示装置500可以包括各种模块来实现相应的功能。例如，显示装置500可以包括期望亮度确定模块502、第三调整模块504、第二滤波模块505、第三修正模块506、第四调整模块507和第二校正模块508。其中，期望亮度确定模块502配置为：基于所述子像素灰阶矩阵，利用第二显示面板的灰阶-亮度曲线，确定各个像素的期望亮度。第三调整模块504配置为：确定所述第一显示面板中像素单元的灰阶，使得与待显示图像的同个像素的不同子像素对应的相邻像素单元的灰阶不同。第二滤波模块505配置为：对所确定所述第一显示面板的像素单元的灰阶进行平滑滤波。第三修正模块506配置为：基于灰阶进行平滑滤波后的第一显示面板的遮挡系数，修正所述背光分区的亮度，以得到第三修正亮度。第四调整模块507配置为：对于所述第二显示面板的每个像素，根据对应背光分区的第三修正亮度与所述像素的期望亮度之间的亮度差异，调整该像素的灰阶，以对待显示图像进行亮度补偿。第二校正模块508可以配置为对亮度补偿后的图像进行色彩校正。上述模块中，期望亮度确定模块502、第二滤波模块505、第三修正模块506、第四调整模块507和第二校正模块508所执行的处理分别与图3中的期望亮度确定模块402、第一滤波模块405、第二修正模块406、第二调整模块407和第一校正模块408所执行的处理分别类似，在此不赘述。
例如，第三调整模块504可以配置为对所述第一显示面板中与待显示图像的同个像素的不同子像素，例如同个像素的RG子像素和B子像素，对应的相邻像素单元的灰阶取值不同。例如，第一显示面板的相邻的一对像素单元中，与B子像素对应的像素单元的灰阶比与RG子像素对应的像素单元的灰阶低50-80，从而使得RG色彩与B色彩的对比更鲜明。在一些实施例中，可以为第一显示面板预先设置各个像素单元的基准灰阶，并在此基准灰阶的基础上进行差异取值。在一些实施例中，可以根据期望亮度与背光分区的亮度之间的差异，例如在第一显示面板的相应各个像素单元处的差异，来预先设置第一显示面板的相应各个像素单元的基准灰阶。
在一些实施例中，第二滤波模块505可以配置为：对第一显示面板的像素单元的灰阶进行平滑滤波，以避免背光分区与第一显示面板的像素单元的相对位置的偏差以及由该偏差可能会引起的块状问题，以在保证高亮度位置的亮度不下降的情况下，提高在高亮度位置的周边的亮度不平滑部分，使得亮度更加平滑。例如，平滑滤波的方法可以包括均值滤波、中值滤波、高斯滤波等多种，在此不做具体限定
在一些实施例中，显示装置500还可以包括第三补偿模块，用于对第一显示面板的像素单元的平滑滤波后的灰阶进行均一性补偿，以使得显示亮度具有良好的均一性。
图6为根据本公开的显示控制方法的一个具体实施例的流程图。如图6所示，本公开还提供了一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在背光模组的出光侧的第一显示面板和第二显示面板。例如，背光模组可以包括直下式的微型发光二极管阵列，且该微型发光二极管阵列被划分为多个矩形的背光分区，每个背光分区对应第一显示面板的一个像素区域，每个像素区域包括多个像素单元，第一显示面板的每个像素单元对应第二显示面板的多个像素，第二显示面板配置为用于显示图像，所述显示控制方法包括以下步骤S601至S607。
在步骤S601，获取待显示图像的子像素灰阶矩阵，子像素灰阶矩阵的元素与第二显示面板的像素一一对应。例如，在第二显示面板设有彩色滤光片用于显示彩色图像的情况下，子像素灰阶矩阵可以表示待显示彩色图像的所有像素的RGB子像素的灰阶矩阵，子像素灰阶矩阵的每个元素表示待显示彩色图像的该位置处的色彩子像素的灰阶。该子像素灰阶矩阵可由主机作为数据源传输为显示装置，经过如下各种处理之后，可以分别生成Mini-LED控制数据传输给Mini-LED阵列的驱动器，生成第一显示面板和第二显示 面板的控制数据(调整后的灰阶数据)传输给第一显示面板和第二显示面板以实现对其的分别精细调控，使得不仅可以增强对比度和峰值亮度，还可以降低光晕和漏光。
在步骤S602，基于子像素灰阶矩阵，利用第二显示面板的灰阶-亮度曲线，确定第二显示面板中每个像素的期望亮度。在一些实施例中，所述灰阶-亮度曲线例如Gamma曲线，可以表示考虑到了第二显示面板的设计要求和硬件性能的灰阶-亮度对应关系，其可以用于将灰阶转换为期望的亮度。
在步骤S603，对于每个背光分区，根据子像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度。例如，可以根据背光分区对应的子像素灰阶矩阵中灰阶的统计情况，例如，95％以上灰阶为较高值，可以将所有Mini-LED均设置为较大亮度，可以通过设定Mini-LED的PWM值和/或电流值来实现其设定亮度。再例如，也可以取背光分区中的子像素灰阶矩阵对应的灰阶的最大值，并根据该最大值，将所有Mini-LED经由PWM值和/或电流值的设定来设置为最大亮度。在一些实施例中，灰阶与Mini-LED的亮度或相应工作参数(PWM值和/或电流值)之间的对应关系可以预先测量得到或建立列表以供调用。
在步骤S604，基于所有背光分区的光扩散系数，对各个背光分区中的微型发光二极管的所述设定亮度进行修正，以得到所有背光分区对应的第一修正亮度。例如，背光分区的所有Mini-LED，基于各自的发光角度(虽然理想上希望Mini-LED的光束是直线的，但实际上有扩散)以及彼此之间的相对位置关系，会发生光线的扩散和相应混叠。基于所有背光分区中Mini-LED的光扩散系数进行修正，所得到的第一修正亮度计入了光扩散作用，更符合Mini-LED阵列的实际亮度分布。该第一修正亮度可以是第一修正亮度分布图的形式，可以理解为尺寸与背光分区的尺寸相同的二维矩阵，每个元素代表该处的实际亮度。在一些实施例中，各种Mini-LED阵列的每个Mini-LED的光扩散系数可以通过各种光学模拟仿真软件模拟预先得到，并存储为列表，以供方便地调用，光学模拟仿真软件可以为OPTISWORKS软件、TRACEPRO软件等，在此不做具体限定。
在步骤S605，对于每个背光分区，根据该背光分区的第一修正亮度和对应像素的期望亮度之间的亮度差异，确定对应像素单元的灰阶，以弥补该亮度差异。例如，对于某一背光分区，如果第一修正亮度低于对应像素的期望亮度，确定该背光分区对应的第一显示面板中的所有像素单元的灰阶，以进行亮度补偿。在一些实施例中，例如第一修正亮度比期望亮度低了某亮度时，可以确定该背光分区对应的第一显示面板中的所有像素 单元的灰阶。例如，可以利用例如第一显示面板的Gamma曲线作为亮度差值-确定灰阶的对应关系，基于亮度差值来确定第一显示面板中对应该背光分区的所有像素单元的灰阶。实际上，第一显示面板的作用类似在对每个背光分区的开启程度分别进行控制的光阀，在一些实施例中，开始可以将第一显示面板的所有像素单元的灰阶设置为预定值，例如可以设置为最大灰阶值，使得其开启程度最大。对于每个背光分区，在第一修正亮度高于对应像素的期望亮度时，降低第一显示面板中与该背光分区对应的像素单元的灰阶，例如在预设的最大灰阶值的基础上降低到与亮度差值对应的补偿灰阶。
在步骤S606，基于所有背光分区的光扩散系数以及确定灰阶后的第一显示面板的遮挡系数，对各个背光分区中的微型发光二极管的设定亮度进行修正，以得到第二修正亮度。例如，第一显示面板基于其各个像素单元的灰阶起到相应的遮挡作用，第一显示面板的每个像素单元不同灰阶的对应遮挡系数可以通过仿真建模预先得到，并存储为列表，以供方便地调用，光学模拟仿真软件可以为OPTISWORKS软件、TRACEPRO软件等，在此不做具体限定。通过调用预先建立的灰阶-遮挡系数关系，基于第一显示面板的各个像素单元的确定的(调整后的)灰阶，可以容易得到其各个像素单元处的遮挡系数。如此，通过综合考虑所有背光分区的光扩散系数以及灰阶确定(调整)后的第一显示面板的遮挡系数，可以使得该背光分区的第二修正亮度更接近背光模组和第一显示面板作为整体的实际亮度。
在步骤S607，对于第二显示面板的每个像素，根据第二修正亮度分布图和期望亮度分布图中在该像素处的亮度差异，调整第二显示面板的该像素的灰阶。通过调整第二显示面板的像素的灰阶，可以对应背光区域的第二修正亮度和所述像素的期望亮度之间的亮度差异进行补偿，以使得显示模组、第一显示面板和第二显示面板作为整体最终实现的实际显示亮度接近于期望亮度，从而实现理想的图像显示。
通过上述显示控制方法，可以对显示装置的亮度进行背光分区、第一显示面板的像素到第二显示面板的像素(图像的子像素级别)级别的由粗到细的逐层调整，相较单独对显示模组和/或第二显示面板的亮度调整，提高了亮度调整的效率，提升了亮度调整的效果，增强了图像的对比度和峰值亮度，且降低了光晕的不良影响。
图7为根据本公开的显示控制方法的另一个具体实施例的流程图。如图7所示，本公开还提供了一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在背光模组的出光侧的第一显示面板和第二显示面板，其中，第二显示面板配置为 用于显示图像且第二显示面板的多个像素与待显示图像的色彩子像素一一对应，第一显示面板的像素单元的高度与第二显示面板的像素的高度相同，第一显示面板的像素单元的宽度是第二显示面板的像素的宽度的2倍，第一显示面板中至少部分行的像素相对于相邻行的像素错位一个像素的宽度。所述显示控制方法包括以下步骤S701至S705。
在步骤S701，获取待显示图像的子像素灰阶矩阵，子像素灰阶矩阵的元素与第二显示面板的像素一一对应。
在步骤S702，基于子像素灰阶矩阵，利用第二显示面板的灰阶-亮度曲线，确定多个像素各自的期望亮度。“灰阶-亮度曲线”、“期望亮度分布图”的技术含义和获取方式在本公开的实施例中已经详细说明，在此不赘述。通过使得第一显示面板中与待显示图像的同个像素的不同子像素(例如RG子像素和B子像素)对应的相邻像素单元的灰阶取值不同，可以对图像色彩进行增强。
在步骤S703，对第一显示面板中与待显示图像的同个像素的不同子像素对应的相邻像素单元的灰阶进行差异取值，以确定第一显示面板的各个像素单元的灰阶值。例如，让第一显示面板的一对相邻像素单元中，与B子像素对应的像素单元的灰阶比RG子像素对应的像素单元的灰阶低50-80，从而使得RG色彩与B色彩的对比更鲜明。在一些实施例中，可以为第一显示面板预先设置各个像素单元的基准灰阶，并在此基准灰阶的基础上进行所述差异取值。在一些实施例中，可以根据期望亮度与背光分区的亮度之间的差异，例如在第一显示面板的相应各个像素单元处的差异，来预先设置第一显示面板的相应各个像素单元的基准灰阶。
在步骤S704，基于灰阶确定后的第一显示面板的遮挡系数，对背光分区的亮度进行修正，以得到第三修正亮度。
在步骤S705，对于第二显示面板的每个像素，根据第三修正亮度与期望亮度之间的亮度差异，调整第二显示面板的该像素的灰阶。
本公开的实施例所提供的显示控制方法，在对图像色彩进行增强的同时，通过在第二显示面板的像素级别的精细亮度调节，可以实现良好的亮度补偿，使得补偿后的亮度接近期望亮度。“遮挡系数”、“修正亮度”的技术含义和获取方式在本公开的实施例中已经详细说明，在此不赘述。
图8示出了根据本公开另一实施例的驱动装置的结构示意图。如图8所示，根据本公开实施例的驱动装置800可以包括：至少一个处理器8001；以及存储器8002。存储器 8002可以存储指令。至少一个处理器8001执行存储在存储器8002中的指令，以实现根据本公开实施例的驱动方法。
本领域技术人员可以理解，通过处理器8001执行存储在存储器8002中的指令，根据本公开实施例的驱动装置800可以实现根据本公开实施例的示例驱动方法的各种功能，例如以上参考图6和图7所述的驱动方法。为了简明，此处不再赘述。
以上描述旨在是说明性的而不是限制性的。例如，上述示例(或其一个或更多方案)可以彼此组合使用。例如本领域普通技术人员在阅读上述描述时可以使用其它实施例。另外，在上述具体实施方式中，各种特征可以被分组在一起以简单化本公开。这不应解释为一种不要求保护的公开的特征对于任一权利要求是必要的意图。相反，本公开的主题可以少于特定的公开的实施例的全部特征。从而，以下权利要求书作为示例或实施例在此并入具体实施方式中，其中每个权利要求独立地作为单独的实施例，并且考虑这些实施例可以以各种组合或排列彼此组合。本公开的范围应参照所附权利要求以及这些权利要求赋权的等同形式的全部范围来确定。
以上实施例仅为本公开的示例性实施例，不用于限制本公开，本公开的保护范围由权利要求书限定。本领域技术人员可以在本公开的实质和保护范围内，对本公开做出各种修改或等同替换，这种修改或等同替换也应视为落在本公开的保护范围内。

Claims (16)

  1. 一种显示装置，包括：
    背光模组，包括多个背光分区；
    第一显示面板和第二显示面板，依次设置在所述背光模组的出光侧，所述第二显示面板配置为显示图像；其中所述第一显示面板包括与多个背光分区分别对应的多个像素区域，每个像素区域包括多个像素单元，每个像素单元对应于所述第二显示面板的多个像素；以及
    处理器，被配置为：
    获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的多个灰阶与第二显示面板的多个像素一一对应；
    基于所述像素灰阶矩阵，利用针对第二显示面板的灰阶-亮度曲线，确定所述多个像素各自的期望亮度；
    对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度；
    基于所述多个背光分区的光扩散系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述每个背光分区的第一修正亮度；
    对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的每个像素的期望亮度的差异，确定所述对应像素区域中每个像素单元的灰阶；
    基于多个背光分区的光扩散系数以及第一显示面板的遮挡系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述每个背光分区的第二修正亮度，其中所述第一显示面板的遮挡系数是利用所述每个像素单元的灰阶确定的；以及
    对于第二显示面板的每个像素，根据对应背光分区的所述第二修正亮度和所述像素的期望亮度差异，调整所述待显示图像所述每个像素的灰阶，以便所述第二显示面板以调整后的灰阶显示所述待显示图像。
  2. 根据权利要求1所述的显示装置，其中，所述处理器还配置为：
    对于像素区域中的每个像素单元，响应于对应背光分区的所述第一修正亮度高于与所述像素单元对应像素的期望亮度，降低所述像素单元的灰阶。
  3. 根据权利要求1所述的显示装置，其中，所述处理器还配置为：
    对于每个像素，响应于对应背光分区的所述第二修正亮度高于所述像素的期望亮度，降低所述像素的灰阶。
  4. 根据权利要求1所述的显示装置，其中，所述处理器还配置为：
    对于每个背光分区，根据所述像素灰阶矩阵中与所述每个背光分区对应的多个像素灰阶的统计分布或多个像素灰阶的灰阶最大值，确定该背光分区的设定发光亮度。
  5. 根据权利要求1所述的显示装置，其中，所述处理器还配置为：
    对于每个背光分区，根据所述背光分区的第一修正亮度和针对对应像素单元的像素的期望亮度之间差异，确定所述像素单元的灰阶；
    对确定的像素单元的灰阶进行平滑滤波；
    基于所述多个背光分区的光扩散系数以及基于平滑滤波后的第一显示面板的遮挡系数，对各个背光分区的所述设定亮度进行修正，以得到第二修正亮度；
    根据对应背光分区的所述第二修正亮度和针对对应像素单元的像素的期望亮度差异，调整所述待显示图像每个该像素的灰阶，以对待显示图像进行亮度补偿；以及
    对亮度补偿后的待显示图像进行色彩校正。
  6. 根据权利要求5所述的显示装置，其中，所述处理器还配置为：
    对各个背光分区的工作参数进行均一性补偿。
  7. 根据权利要求5或6所述的显示装置，其中，所述处理器还配置为：
    对经平滑滤波后的像素单元的灰阶进行均一性补偿。
  8. 一种显示装置，包括：
    背光模组；
    依次设置在所述背光模组的出光侧的第一显示面板和显示色彩的第二显示面板，其中，所述第二显示面板配置为显示图像且第二显示面板包括多个像素，所述多个像素与待显示图像的色彩子像素一一对应；所述第一显示面板包括多个像素单元，所述多个像素单元的每一个的高度与所述像素的高度相同，所述像素单元的宽度是所述像素的宽度的2倍，所述第一显示面板中至少部分行的像素单元相对于相邻行的像素单元错位一个像素的宽度；以及
    处理器，其配置为：
    获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；
    基于所述像素灰阶矩阵，确定所述多个像素各自的期望亮度；
    确定所述各个像素单元的灰阶值，以使与待显示图像的同个像素的不同色彩子像素对应的相邻像素单元的灰阶值不同；
    基于确定灰阶后的第一显示面板的遮挡系数，修正所述每个背光分区的亮度，以得到每个背光分区的第三修正亮度；
    对于所述每个像素，根据对应背光分区的第三修正亮度与所述像素的所述期望亮度差异，调整所述像素的灰阶。
  9. 根据权利要求8所述的显示装置，其中，所述第一显示面板中位于偶数行的像素单元相对于位于奇数行的像素单元错位一个像素的宽度。
  10. 根据权利要求9所述的显示装置，其中，所述第一显示面板中以品字形相邻的每一组三个像素单元分别对应不同的色彩子像素组合。
  11. 根据权利要求8所述的显示装置，其中，所述处理器还配置为：
    对所确定的像素单元的灰阶值进行平滑滤波；
    基于进行平滑滤波后的第一显示面板的遮挡系数，修正每个所述背光分区的亮度，以得到每个所述背光分区的第三修正亮度；
    对于所述每个像素，根据对应背光分区的第三修正亮度与所述像素的所述期望亮度差异，调整该像素的灰阶，以对待显示图像进行亮度补偿；以及
    对亮度补偿后的图像进行色彩校正。
  12. 根据权利要求8所述的显示装置，其中，所述每个背光分区包括直下式微型发光二极管阵列，且每个背光分区的尺寸为所述像素单元的尺寸的整数倍，并且
    所述处理器还配置为：
    对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区中每个微型发光二极管的设定发光亮度；
    基于所有背光分区中微型发光二极管的光扩散系数，对各个背光分区中的微型发光二极管的所述设定发光亮度进行修正，以得到所有背光分区的第一修正亮度；
    对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的像素的期望亮度之间的亮度差异，确定所述像素区域中每个像素单元的灰阶。
  13. 一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在所述背光模组的出光侧的第一显示面板和第二显示面板，其中，所述背光模组包括多 个背光分区，多个背光分区分别对应所述第一显示面板的多个像素区域，每个像素区域包括多个像素单元，每个像素单元对应于所述第二显示面板的多个像素，所述第二显示面板配置为用于显示图像，
    所述显示控制方法包括：
    获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；
    基于所述像素灰阶矩阵，确定多个像素各自的期望亮度；
    对于每个所述背光分区，根据所述像素灰阶矩阵中与该背光分区对应的灰阶信息，确定该背光分区的设定发光亮度；
    基于所述多个背光分区的光扩散系数，对各个背光分区的所述设定发光亮度进行修正，以得到所述背光分区的第一修正亮度；
    对于每个背光分区，根据所述第一修正亮度和针对对应像素区域的像素的期望亮度之间的差异，确定所述像素区域中每个像素单元的灰阶；
    基于所述多个背光分区的光扩散系数以及第一显示面板的遮挡系数，对各个背光分区的所述设定亮度进行修正，以得到所述每个背光分区的第二修正亮度，其中所述第一显示面板的遮挡系数是利用所述每个像素单元的灰阶确定的；以及
    对于第二显示面板的每个像素，根据对应背光分区的所述第二修正亮度和像素的期望亮度之间的亮度差异，调整所述像素的灰阶。
  14. 一种显示控制方法，应用于显示装置，所述显示装置包括背光模组、依次设置在所述背光模组的出光侧的第一显示面板和第二显示面板，其中，所述第二显示面板配置为用于显示图像且第二显示面板包括多个像素，所述多个像素与待显示图像的色彩子像素一一对应，所述第一显示面板包括多个像素单元，所述多个像素单元的每一个高度与所述像素的高度相同，所述像素单元的宽度是所述像素的宽度的2倍，所述第一显示面板中至少部分行的像素单元相对于相邻行的像素单元错位一个像素的宽度；
    所述显示控制方法包括：
    获取待显示图像的像素灰阶矩阵，所述像素灰阶矩阵的元素与所述多个像素一一对应；
    基于所述像素灰阶矩阵，确定所述每个像素单元的期望亮度；
    确定所述各个像素单元的灰阶值，以使与待显示图像的同个像素的不同色彩子像素对应的相邻像素单元的灰阶值不同；
    基于确定灰阶后的第一显示面板的遮挡系数，修正所述背光分区的亮度，以得到每个背光分区的第三修正亮度；
    对于所述每个像素，根据对应背光分区的第三修正亮度与所述像素的期望亮度之间的差异，调整所述像素的灰阶。
  15. 一种驱动装置，包括：
    存储器，配置为存储指令；
    至少一个处理器：
    所述至少一个处理器执行存储在存储器中的指令，以实现根据权利要求13或14所述的方法。
  16. 一种非暂时性计算机可读存储介质，存储有指令，所述指令配置为在被至少一个处理器执行时实现权利要求13或14所述的方法。
PCT/CN2020/091770 2019-06-25 2020-05-22 显示装置、显示控制方法以及驱动装置 WO2020259150A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/255,989 US11308897B2 (en) 2019-06-25 2020-05-22 Display device, display control method and driving device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910556273.7 2019-06-25
CN201910556273.7A CN110264964B (zh) 2019-06-25 2019-06-25 一种显示装置及显示控制方法

Publications (1)

Publication Number Publication Date
WO2020259150A1 true WO2020259150A1 (zh) 2020-12-30

Family

ID=67921444

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/091770 WO2020259150A1 (zh) 2019-06-25 2020-05-22 显示装置、显示控制方法以及驱动装置

Country Status (3)

Country Link
US (1) US11308897B2 (zh)
CN (1) CN110264964B (zh)
WO (1) WO2020259150A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113516953A (zh) * 2021-06-23 2021-10-19 惠科股份有限公司 背光模组的驱动方法和显示装置

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110264964B (zh) 2019-06-25 2021-01-26 京东方科技集团股份有限公司 一种显示装置及显示控制方法
US11645965B2 (en) * 2019-09-26 2023-05-09 Hefei Xinsheng Optoelectronics Technology Co., Ltd. Image processing method and device
CN110930953A (zh) * 2019-11-22 2020-03-27 深圳市华星光电半导体显示技术有限公司 mini-LED背光模组及液晶显示面板
US11004406B1 (en) * 2020-01-05 2021-05-11 Himax Technologies Limited Dual liquid crystal display device
CN111415631B (zh) * 2020-04-28 2022-07-12 Tcl华星光电技术有限公司 背光模组和显示设备
CN114067757B (zh) * 2020-07-31 2023-04-14 京东方科技集团股份有限公司 数据处理方法及装置、显示装置
CN112967660B (zh) * 2020-08-25 2022-03-01 重庆康佳光电技术研究院有限公司 显示控制方法、装置及显示设备
CN112289274B (zh) * 2020-10-28 2022-11-25 青岛信芯微电子科技股份有限公司 一种显示方法及装置
CN112951170B (zh) * 2021-02-22 2022-08-19 京东方科技集团股份有限公司 显示面板的显示控制方法及制备方法、显示装置
US11763758B2 (en) * 2021-05-27 2023-09-19 Sharp Kabushiki Kaisha Luminance unevenness correction system and luminance unevenness correction method
CN113920947B (zh) * 2021-09-17 2023-03-21 京东方科技集团股份有限公司 显示装置、显示控制方法及装置、显示系统
CN113851090B (zh) * 2021-09-26 2023-06-13 福州京东方光电科技有限公司 显示装置及其控制方法、相关设备
CN113870802B (zh) * 2021-09-29 2023-02-10 京东方科技集团股份有限公司 显示装置及其控制方法、相关设备
WO2023050190A1 (zh) * 2021-09-29 2023-04-06 京东方科技集团股份有限公司 亮度调节方法、调节系统、显示装置
CN114038440B (zh) * 2021-11-30 2023-04-07 京东方科技集团股份有限公司 显示装置及其控制方法
CN114639356B (zh) * 2022-03-14 2024-02-06 Oppo广东移动通信有限公司 显示亮度调节方法、装置、电子设备和计算机可读存储介质
CN114648968B (zh) * 2022-03-31 2023-04-18 北京京东方显示技术有限公司 显示模组的驱动方法及驱动装置、显示设备、存储介质
CN114779530B (zh) * 2022-05-16 2023-08-15 中国民用航空飞行学院 一种低光晕型Mini-LED背光显示器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735361B1 (ko) * 2006-01-09 2007-07-04 삼성전기주식회사 디밍장치
US20080151139A1 (en) * 2006-12-22 2008-06-26 Itt Manufacturing Enterprises, Inc. Addressable backlight for LCD panel
US7460103B2 (en) * 2004-02-09 2008-12-02 Hitachi Displays, Ltd. Liquid crystal display apparatus with luminance distribution calculating, backlight controller, and video correction to improve display contrast ratio
US20110279749A1 (en) * 2010-05-14 2011-11-17 Dolby Laboratories Licensing Corporation High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution
US20160042701A1 (en) * 2014-08-08 2016-02-11 Canon Kabushiki Kaisha Display device and control method thereof
CN107833560A (zh) * 2017-11-14 2018-03-23 友达光电股份有限公司 显示装置
US20180286326A1 (en) * 2017-03-31 2018-10-04 Panasonic Liquid Crystal Display Co., Ltd. Liquid crystal display device and a method for driving thereof with a first and second lcd panel
CN108681164A (zh) * 2018-05-16 2018-10-19 京东方科技集团股份有限公司 显示装置及其显示方法
US10109241B2 (en) * 2015-07-29 2018-10-23 Lg Display Co., Ltd. Light valve panel and liquid crystal display using the same
CN110264964A (zh) * 2019-06-25 2019-09-20 京东方科技集团股份有限公司 一种显示装置及显示控制方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200040325A (ko) * 2018-10-08 2020-04-20 삼성디스플레이 주식회사 표시 장치 및 이의 구동 방법

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7460103B2 (en) * 2004-02-09 2008-12-02 Hitachi Displays, Ltd. Liquid crystal display apparatus with luminance distribution calculating, backlight controller, and video correction to improve display contrast ratio
KR100735361B1 (ko) * 2006-01-09 2007-07-04 삼성전기주식회사 디밍장치
US20080151139A1 (en) * 2006-12-22 2008-06-26 Itt Manufacturing Enterprises, Inc. Addressable backlight for LCD panel
US20110279749A1 (en) * 2010-05-14 2011-11-17 Dolby Laboratories Licensing Corporation High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution
US20160042701A1 (en) * 2014-08-08 2016-02-11 Canon Kabushiki Kaisha Display device and control method thereof
US10109241B2 (en) * 2015-07-29 2018-10-23 Lg Display Co., Ltd. Light valve panel and liquid crystal display using the same
US20180286326A1 (en) * 2017-03-31 2018-10-04 Panasonic Liquid Crystal Display Co., Ltd. Liquid crystal display device and a method for driving thereof with a first and second lcd panel
CN107833560A (zh) * 2017-11-14 2018-03-23 友达光电股份有限公司 显示装置
CN108681164A (zh) * 2018-05-16 2018-10-19 京东方科技集团股份有限公司 显示装置及其显示方法
CN110264964A (zh) * 2019-06-25 2019-09-20 京东方科技集团股份有限公司 一种显示装置及显示控制方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113516953A (zh) * 2021-06-23 2021-10-19 惠科股份有限公司 背光模组的驱动方法和显示装置

Also Published As

Publication number Publication date
US11308897B2 (en) 2022-04-19
CN110264964A (zh) 2019-09-20
CN110264964B (zh) 2021-01-26
US20210390916A1 (en) 2021-12-16

Similar Documents

Publication Publication Date Title
WO2020259150A1 (zh) 显示装置、显示控制方法以及驱动装置
US7965305B2 (en) Color display system with improved apparent resolution
US7209105B2 (en) System and method for compensating for visual effects upon panels having fixed pattern noise with reduced quantization error
WO2020094006A1 (zh) 显示设备及其驱动方法、驱动装置和计算机可读介质
US11348539B2 (en) Driving method of display device and display device
CN104835459A (zh) 显示设备、显示面板驱动器和显示面板的驱动方法
CN103325351A (zh) 图像处理装置和图像处理方法
CN110599962B (zh) 不同颜色序列Delta型子像素显示面板的渲染方法
CN110379370B (zh) 一种基于阈值比较的RGB-Delta型显示面板子像素渲染方法
CN111785224B (zh) 一种亮度驱动方法
WO2019080286A1 (zh) 显示装置的驱动方法及显示装置
KR20170058992A (ko) 액정 패널 및 액정 패널의 픽셀 유닛 설정 방법
US20180144698A1 (en) Display apparatus and driving method thereof
CN111785222B (zh) 一种对比度提升算法及双面板显示装置
US11749215B2 (en) Display driving device and driving method
US11302270B2 (en) Display device and driving method thereof
CN108962155A (zh) 亮度调整方法以及显示器
CN109461419B (zh) 一种显示数据处理方法、系统及显示装置
US10529268B2 (en) Pixel array, display device and display method thereof
WO2022133920A1 (zh) 图像显示方法、装置及存储介质
US10754171B2 (en) Method of correcting optical characteristics of back light unit for three-dimensional display apparatus
US10438547B2 (en) Display device
JP7191057B2 (ja) 表示装置、画像データ変換装置およびホワイトバランス調整方法
WO2022233266A1 (en) Methods for compensating colors based on luminance adjustment parameters and the related display devices
CN109961735B (zh) 一种显示面板、显示装置及白平衡调节方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20831994

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20831994

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20831994

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 03.08.2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20831994

Country of ref document: EP

Kind code of ref document: A1