WO2023070398A1 - 亮度调节方法、亮度调节系统、显示装置 - Google Patents

亮度调节方法、亮度调节系统、显示装置 Download PDF

Info

Publication number
WO2023070398A1
WO2023070398A1 PCT/CN2021/126830 CN2021126830W WO2023070398A1 WO 2023070398 A1 WO2023070398 A1 WO 2023070398A1 CN 2021126830 W CN2021126830 W CN 2021126830W WO 2023070398 A1 WO2023070398 A1 WO 2023070398A1
Authority
WO
WIPO (PCT)
Prior art keywords
brightness
lamp area
compensated
lamp
display
Prior art date
Application number
PCT/CN2021/126830
Other languages
English (en)
French (fr)
Inventor
李程伟
张大宇
张志伟
马昕晨
Original Assignee
京东方科技集团股份有限公司
合肥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, 合肥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 CN202180003105.0A priority Critical patent/CN116368557A/zh
Priority to US17/919,856 priority patent/US20240212636A1/en
Priority to PCT/CN2021/126830 priority patent/WO2023070398A1/zh
Publication of WO2023070398A1 publication Critical patent/WO2023070398A1/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
    • 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
    • G09G3/2007—Display of intermediate tones
    • 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
    • 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
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or 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
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present application relates to the field of display technology, in particular to a brightness adjustment method, a brightness adjustment system, and a display device.
  • Mini LED Mini Light Emitting Diode, millimeter light emitting diode
  • Micro LED Micro Light Emitting Diode, micro light emitting diode
  • the display screen of Mini LED and Micro LED display products has the problem of uneven brightness, which reduces the display effect.
  • the embodiments of the present application provide a method for adjusting brightness, which is applied to a display module.
  • the display module includes a backlight module and a display panel, and the display panel is located on the light output side of the backlight module.
  • the adjustment methods mentioned above include:
  • the display screen corresponding to the lamp area to be compensated is controlled to display the updated brightness.
  • the determining the reference lamp area according to the brightness of each of the lamp areas includes:
  • the lamp area with the highest brightness is selected as the reference lamp area.
  • the determining the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area includes:
  • the compensation parameter of the lamp area to be compensated is determined according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated in the same display frame.
  • the determination of the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated under the same display frame includes:
  • the ratio of the brightness of the reference lamp area to the brightness of the lamp area to be compensated in the same display frame is used as the compensation parameter of the lamp area to be compensated.
  • the controlling the display screen corresponding to the lamp area to be compensated to display the updated brightness according to the compensated gray scale data includes:
  • the compensated grayscale data update the transmittance of the display panel corresponding to the lamp area to be compensated; wherein, the updated brightness of the display screen corresponding to the lamp area to be compensated is equal to the brightness of the lamp area to be compensated Multiplied by the updated transmittance.
  • the determining the brightness of each lamp area under one frame of display screen includes:
  • the brightness of the lamp area is determined according to the maximum gray scale of the display picture corresponding to the lamp area.
  • the lamp region to be compensated includes at least one of the other lamp regions except the reference lamp region.
  • an embodiment of the present application provides a brightness adjustment system, including: a controller and a display module, the display module includes a backlight module and a display panel, and the backlight module and the display panel are respectively electrically connected to the controller;
  • the controller includes a zone dimming unit and a control unit; the zone dimming unit is electrically connected to the control unit and the backlight module;
  • the partition dimming unit is configured to divide the backlight module into a plurality of lamp areas; determine a reference lamp area according to the brightness of each of the lamp areas; determine a lamp area to be compensated according to the brightness of the reference lamp area compensation parameters;
  • the control unit is configured to obtain the compensation parameter, convert the compensation parameter into compensation grayscale data of the display panel; control the display screen corresponding to the lamp area to be compensated to display Updated brightness.
  • zoned dimming unit includes zoned subunits and dimming subunits
  • the partition subunit is configured to divide the backlight module into a plurality of the lamp zones
  • the dimming subunit is configured to determine the reference lamp zone according to the brightness of each lamp zone; and determine the compensation parameter of the lamp zone to be compensated according to the brightness of the reference lamp zone.
  • the dimming subunit includes a first data acquisition module and a compensation calculation module
  • the first data acquisition module is configured to acquire the brightness of each of the lamp areas in one frame of display screen; acquire the brightness of the reference lamp area; acquire the brightness of the lamp area to be compensated;
  • the compensation calculation module is configured to select the lamp area with the highest brightness as the reference lamp area; according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated in the same frame display screen, determine the to-be-compensated lamp area The compensation parameter of the compensation lamp area; wherein, the compensation parameter is the ratio of the brightness of the reference lamp area to the brightness of the lamp area to be compensated in the same display frame.
  • control unit includes a second data acquisition module and a compensation correction module
  • the second data acquisition module is configured to acquire the compensation parameters of the lamp area to be compensated
  • the compensation correction module is configured to convert the compensation parameter into compensation grayscale data of the display panel; according to the compensation grayscale data, control to update the transmittance of the display panel corresponding to the lamp area to be compensated; Wherein, the updated brightness of the display screen corresponding to the lamp area to be compensated is equal to the brightness of the lamp area to be compensated multiplied by the updated transmittance.
  • the brightness of each lamp area is determined according to the maximum gray scale of the display picture corresponding to the lamp area.
  • the lamp region to be compensated includes at least one of the other lamp regions except the reference lamp region.
  • an embodiment of the present application further provides a display device, including the above-mentioned brightness adjustment system.
  • Figure 1a and Figure 1b are the grayscale-transmittance curves of the display modules corresponding to different lamp areas provided by the embodiment of the present application;
  • FIG. 2 is a flow chart of a method for adjusting brightness provided by an embodiment of the present application
  • Fig. 3 is a schematic diagram of arrangement of lamp areas of a backlight module provided by an embodiment of the present application.
  • Fig. 4a is a schematic structural diagram of a brightness adjustment system provided by an embodiment of the present application.
  • Fig. 4b is a schematic structural diagram of another brightness adjustment system provided by an embodiment of the present application.
  • plural means two or more; the orientation or positional relationship indicated by the term “upper” is based on the orientation or positional relationship shown in the drawings, It is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the structures or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
  • the Mini LED backlight module in the related technology can control the backlight module by partition through the local dimming function. For example, it can control a lamp area to be on. or off state.
  • the backlight module is applied to display products, since the maximum brightness of each lamp area of the backlight module is different, the problem of uneven brightness also occurs in the display screen of the display product.
  • the display module includes a backlight module and a display panel located on the light-emitting side of the backlight module.
  • the maximum brightness of different partitions in the backlight module is different.
  • the partition A (Area The brightness of A) is Y1
  • the brightness of area B (Area B) is Y2
  • Y1 ⁇ Y2 as shown in Figure 1a and Figure 1b, in the case of the same gray scale, the part area of the display module corresponding to area A Partial areas of the display module corresponding to the partition B have the same transmittance.
  • the transmittance of the partial area of the display module corresponding to partition A and the partial area of the display module corresponding to partition B are both T1; in the gray scale of Lb, the display corresponding to partition A
  • the transmittance of the area, and under the same gray scale, the brightness of different partitions is different.
  • the display module displays a solid color screen, the problem of uneven brightness of the display screen is very significant, which seriously reduces the display effect.
  • an embodiment of the present application provides a method for adjusting brightness, which is applied to a display module.
  • the display module includes a backlight module and a display panel, and the display panel is located on the light emitting side of the backlight module.
  • the brightness compensation method provided in this application can compensate any frame of the display module, not just limited to solid color images.
  • the adjustment method includes:
  • the backlight module can be divided into 9 light areas, 16 light areas, 25 light areas, or even 3000-5000 light areas.
  • its state can be controlled independently, for example: to control a lamp area to be on or off; it can also control its brightness independently, for example to control a lamp area independently to increase its brightness or decrease.
  • FIG. 3 shows a schematic diagram of dividing the backlight source of the backlight module into 16 lamp areas, and each block in FIG. 3 represents a lamp area.
  • the backlight module can be a Mini LED (Mini Light Emitting Diode, millimeter light emitting diode) backlight module; or, it can also be a Micro LED (Micro Light Emitting Diode, micro light emitting diode) backlight module.
  • Mini LED Mini Light Emitting Diode, millimeter light emitting diode
  • Micro LED Micro Light Emitting Diode, micro light emitting diode
  • FIG. 3 shows a schematic diagram of dividing the backlight source of the backlight module into 16 lamp areas, and each block in FIG. 3 represents a lamp area.
  • the brightness of each lamp area is determined under the same frame of display screen; the lamp area with the highest brightness under one frame of display screen is selected as the reference lamp area.
  • the brightness of each lamp area may be the same; or, the brightness of each lamp area may be different; or, the brightness of some lamp areas may be the same, and the brightness of some lamp areas may be different.
  • the brightness of each lamp area is related to the maximum grayscale value of the display image corresponding to the lamp area.
  • the maximum grayscale of the display screen corresponding to lamp area 1 is L200
  • the brightness of lamp area 1 can be controlled by the partition control function of the backlight module to meet the brightness of the display screen with gray scale of L200
  • the brightness of the display screen corresponding to lamp area 2 The maximum gray scale is L250
  • the brightness of the lamp area 2 can be controlled by the partition control function of the backlight module to meet the brightness of the display screen with a gray scale of L250
  • the brightness of the lamp area 1 is different from that of the lamp area 2, so, compared with Controlling the brightness of all lamp areas to be the same can significantly reduce the power consumption of the backlight module and reduce the cost.
  • the maximum grayscale value of the above-mentioned display screen refers to the maximum grayscale of a display pixel corresponding to the display screen.
  • the process of determining compensation parameters is as follows: in one frame of display screen, determine the brightness of the reference lamp area; determine the brightness of the lamp area to be compensated; Compensate the brightness of the lamp area, and determine the compensation parameters of the lamp area to be compensated.
  • the compensation parameter of the lamp area to be compensated is the ratio of the brightness of the reference lamp area to the brightness of the lamp area to be compensated in the same display frame; wherein, each lamp area to be compensated corresponds to a compensation parameter.
  • the brightness of the reference lamp area and the brightness of the lamp area to be compensated can be determined at the same time in a display frame; or, the brightness of the reference lamp area can be determined first, and then the brightness of the lamp area to be compensated can be determined; Alternatively, the brightness of the lamp area to be compensated can also be determined first, and then the brightness of the reference lamp area can be determined.
  • the lamp zone to be compensated includes at least one lamp zone other than the reference lamp zone.
  • the brightness of each lamp region to be compensated can be determined simultaneously; or, the brightness of each lamp region to be compensated can also be determined sequentially.
  • the compensation parameter is converted into compensation grayscale data of the display panel, according to the brightness requirement and compensation parameters of the display screen corresponding to the lamp area to be compensated, the to-be-compensated
  • the compensation parameters of the lamp area are converted into compensated grayscale data of each pixel of the display panel corresponding to the lamp area to be compensated, wherein the number of compensated grayscale data is the same as the number of pixels in the area of the display panel corresponding to the lamp area to be compensated, That is, one pixel corresponds to one compensated gray scale data.
  • the compensation parameters of the lamp area to be compensated are calculated through the backlight area regulator (Local Dimming Controlling) in the display module, and the timing controller (TCON) in the display module obtains the compensation parameters of the lamp area to be compensated. And convert the compensation parameter into the pixel gray scale value in the display panel corresponding to the lamp area to be compensated, and then convert it into the pixel voltage of the pixel area of the display panel corresponding to the lamp area to be compensated, and the pixel gray scale obtained by converting the compensation parameter Both the value and the pixel voltage can be compensated grayscale data.
  • the backlight area regulator Local Dimming Controlling
  • TCON timing controller
  • the transmittance of the display panel corresponding to the lamp area to be compensated is controlled and updated, so as to realize the compensation for the backlight of different lamp areas.
  • the transmittance of the display panel corresponding to the lamp area to be compensated can be updated according to the compensated grayscale data; wherein, the updated brightness of the display screen corresponding to the lamp area to be compensated is equal to the brightness of the lamp area to be compensated Brightness multiplied by updated transmittance.
  • the compensated grayscale data may include pixel grayscale values and pixel voltages of pixels in a local area of the display panel corresponding to the lamp area to be compensated.
  • the compensated gray scale value is transmitted to the driver chip of the display panel (such as a source driver chip, also known as Source Driver) through a timing controller (TCON), and the driver chip is electrically connected to the data signal lines arranged in an array in the display panel.
  • the driving chip converts the compensated gray scale value into a pixel voltage value, and transmits the pixel voltage value to each pixel unit through each data signal line.
  • the embodiment of the present application provides a brightness adjustment method, which is applied to a display module.
  • the display module includes a backlight module and a display panel, and the display panel is located on the light emitting side of the backlight module.
  • the adjustment method includes: dividing the backlight module into Multiple lamp areas; determine the reference lamp area according to the brightness of each lamp area; determine the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area; convert the compensation parameters into the compensation gray scale data of the display panel; data to control the updated brightness of the display screen corresponding to the lamp area to be compensated.
  • the lamp area with the highest brightness in the display screen of the same frame is used as the reference lamp area, and the brightness of the reference lamp area is used as the reference, and the compensation gray scale data in the display panel corresponding to the lamp area to be compensated is adjusted to obtain
  • the purpose of compensating the backlight of different lamp areas is achieved through the compensation gray scale data of the display panel, thereby improving the problem of uneven brightness of the display screen of the display module and improving the display effect.
  • step S902 determining the reference lamp area according to the brightness of each lamp area includes:
  • step S9021 determining the brightness of each lamp area under one frame of display screen includes:
  • Sub-step 1 Under one frame of display screen, determine the maximum gray scale of the display screen corresponding to each lamp area;
  • Sub-step 2 Determine the brightness of the lamp area according to the maximum gray scale of the display screen corresponding to the lamp area.
  • the brightness of each lamp area can be determined separately through the backlight area adjuster.
  • the brightness of each lamp area may be the same; or, the brightness of each lamp area may also be different.
  • the brightness of the lamp area 1 and the lamp area 2 are the same; in the second frame of the display screen, the brightness of the lamp area 1 and the lamp area 2 are different.
  • the maximum grayscale of the pixels of the display panel corresponding to the lamp area 1 is L200
  • the lamp area 1 can provide the screen brightness corresponding to the display grayscale L200 of the display panel
  • the lamp area 2 can provide the screen brightness corresponding to the display panel display gray scale L250, the brightness of the lamp area 1 and the lamp area 2 are different, and the brightness of the lamp area 2 is greater than the brightness of the lamp area 1.
  • the brightness of the lamp area is determined according to the maximum gray scale of the display screen corresponding to the lamp area;
  • the brightness of the lamp area is the brightness corresponding to the highest gray scale required by each pixel in the display panel, which can significantly reduce the power consumption of the backlight module and reduce the cost.
  • step S903 determining the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area includes:
  • S9033 Determine the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated in the same display frame.
  • the ratio of the brightness of the reference lamp area to the brightness of the lamp area to be compensated in the same display frame is used as the compensation parameter of the lamp area to be compensated.
  • one lamp area to be compensated corresponds to one compensation parameter.
  • lamp area a is the reference lamp area
  • the brightness of lamp area a is Yref
  • lamp area b is the lamp area to be compensated
  • the brightness of lamp area b is Yb
  • the compensation parameter of lamp area b is Yref/Yb.
  • the compensation parameters are converted into compensated grayscale data of each pixel of the display panel corresponding to the lamp area to be compensated, wherein the number of compensated grayscale data is the same as the number of pixels in the area of the display panel corresponding to the lamp area to be compensated, that is, one pixel Corresponding to a compensated gray scale data.
  • step S905 controlling the display screen corresponding to the lamp area to be compensated to display the updated brightness according to the compensated gray scale data includes:
  • the compensated grayscale data may include pixel grayscale values and pixel voltages of pixels in a local area of the display panel corresponding to the lamp area to be compensated.
  • the compensated gray scale value is transmitted to the driver chip of the display panel (such as a source driver chip, also known as Source Driver) through a timing controller (TCON), and the driver chip is electrically connected to the data signal lines arranged in an array in the display panel.
  • the driver chip converts the compensated grayscale value into a pixel voltage value, and transmits the pixel voltage value to each pixel unit through each data signal line, and each pixel unit adjusts its transmittance according to the pixel voltage value, so that the display corresponding to the compensation lamp area Adjust the brightness of the panel.
  • the gray scale to be displayed is L200
  • the brightness of the lamp area where it is located is Y2
  • the brightness of the reference lamp area is Yref
  • the compensation parameter Yref/Y2 .
  • T1*Y2 the transmittance before updating
  • T2 the transmittance after updating
  • T2 T1*X
  • X can be determined according to the compensation parameter Yref/Y2. It should be noted that, in practical applications, the transmittance of each pixel can be adjusted by the pixel voltage of each pixel.
  • the compensation parameter is determined according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated by taking the lamp area with the highest brightness in the same frame display picture as the reference lamp area, and taking the brightness of the reference lamp area as a benchmark , after converting the compensation parameters of the lamp area to be compensated into the compensation gray-scale data of the display panel, the transmittance of the display panel is adjusted according to the compensation gray-scale data, so as to realize the adjustment of different lamp areas through the compensation gray-scale data of the display panel.
  • the purpose of compensating the brightness of the backlight thereby improving the problem of uneven brightness of the display screen of the display module, and improving the display effect.
  • the lamp region to be compensated includes at least one of other lamp regions except the reference lamp region.
  • the embodiment of the present application provides a brightness adjustment system, as shown in FIG.
  • the panel 3 is electrically connected to the controller 2 respectively;
  • the controller 2 includes a zone dimming unit 21 and a control unit 22; the zone dimming unit 21 is electrically connected to the control unit 22 and the backlight module 1 respectively;
  • the partition dimming unit 21 is configured to divide the backlight module 1 into a plurality of lamp areas; determine the reference lamp area according to the brightness of each lamp area; determine the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area;
  • the control unit 22 is configured to obtain compensation parameters, convert the compensation parameters into compensation grayscale data of the display panel; and control the display screen corresponding to the lamp area to be compensated to display updated brightness according to the compensation grayscale data.
  • the controller 2 may be a timing controller (TCON)
  • the zone dimming unit 21 may be a zone dimming controller (LDC, Local dimming controller)
  • the control unit 22 may be a multi-point control device ( MCU, Microcontroller Unit).
  • the above-mentioned backlight module may be a Mini LED type backlight module, or may also be a Micro LED type backlight module, which is determined according to the actual situation and is not limited here.
  • the system also includes a PC motherboard or a video capture card (Graphics Cards), and the PC motherboard or a video capture card and the controller 2 can be connected through an EDP interface to transmit video stream signals to In the controller 2, each module in the controller 2 performs logic operations on the video stream signal, and transmits the obtained signal to the display panel 3 through the SPI interface, so that the display module can be controlled by controlling the transmittance of each pixel in the display panel. Adjust the overall brightness.
  • a PC motherboard or a video capture card Graphics Cards
  • the PC motherboard or a video capture card and the controller 2 can be connected through an EDP interface to transmit video stream signals to In the controller 2, each module in the controller 2 performs logic operations on the video stream signal, and transmits the obtained signal to the display panel 3 through the SPI interface, so that the display module can be controlled by controlling the transmittance of each pixel in the display panel. Adjust the overall brightness.
  • the controller 2 is electrically connected to the backlight module 1 through an LED driver (LED Driver).
  • LED Driver LED Driver
  • EDP interface is an all-digital interface based on the DisplayPort architecture and protocol, which can transmit high-resolution signals with simpler connectors and fewer pins, and can simultaneously transmit multiple data.
  • SPI Serial Peripheral Interface--Serial Peripheral Interface
  • MCU Memory Stick
  • serial Peripheral Interface--Serial Peripheral Interface is a synchronous serial peripheral interface that enables the MCU to communicate with various peripheral devices in a serial manner to exchange information.
  • the brightness adjustment system uses the lamp area with the highest brightness in the same frame of display screen as the reference lamp area, and takes the brightness of the reference lamp area as the reference, according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated Determine the compensation parameters, convert the compensation parameters of the lamp area to be compensated into the compensation gray-scale data of the display panel, and adjust the transmittance of the display panel according to the compensation gray-scale data, so as to realize the compensation through the gray-scale data of the display panel.
  • the purpose of compensating the backlight brightness of different lamp areas is to improve the problem of uneven brightness of the display screen of the display module and improve the display effect.
  • the zone dimming unit 21 includes a zone subunit 212 and a dimming subunit 211;
  • the partition subunit 212 is configured to divide the backlight module 1 into a plurality of lamp areas
  • the dimming subunit 211 is configured to determine a reference lamp area according to the brightness of each lamp area; and determine the compensation parameters of the lamp area to be compensated according to the brightness of the reference lamp area.
  • the zone dimming unit 21 may be a zone dimming controller (LDC, Local dimming controller), and the zone dimming controller may include a zone subunit and a dimming subunit 211.
  • LDC zone dimming controller
  • the zone dimming controller may include a zone subunit and a dimming subunit 211.
  • the partition subunit 212 individually controls each lamp area to turn on or off to achieve the purpose of partitioning; the dimming subunit 211 controls to increase or decrease the brightness of each lamp area, and the dimming subunit 211 can display Determine the brightness of each lamp area under the screen, and determine the lamp area with the highest brightness as the reference lamp area; then determine the compensation parameters according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated.
  • the dimming subunit 211 includes a first data acquisition module A and a compensation calculation module B; the first data acquisition module A is configured to acquire the brightness of each lamp area under one frame of display screen; acquire The brightness of the reference lamp area; obtain the brightness of the lamp area to be compensated; the compensation calculation module B is configured to select the lamp area with the highest brightness as the reference lamp area; according to the brightness of the reference lamp area and the brightness of the lamp area to be compensated under the same frame display picture , to determine the compensation parameter of the lamp area to be compensated; wherein, the compensation parameter is the ratio of the brightness of the reference lamp area to the brightness of the lamp area to be compensated in the same display frame.
  • one lamp area to be compensated corresponds to one compensation parameter.
  • lamp area a is the reference lamp area
  • the brightness of lamp area a is Yref
  • lamp area b is the lamp area to be compensated
  • the brightness of lamp area b is Yb
  • the compensation parameter of lamp area b is Yref/Yb.
  • control unit 22 includes a second data acquisition module C and a compensation correction module D;
  • the second data acquisition module C is configured to acquire compensation parameters of the lamp area to be compensated
  • the compensation correction module D is configured to convert the compensation parameters into compensation grayscale data of the display panel; according to the compensation grayscale data, control and update the transmittance of the display panel corresponding to the lamp area to be compensated; wherein, the display corresponding to the lamp area to be compensated
  • the updated brightness of the picture is equal to the brightness of the lamp area to be compensated multiplied by the updated transmittance.
  • the compensated grayscale data may include pixel grayscale values and pixel voltages of pixels in a local area of the display panel corresponding to the lamp area to be compensated.
  • the compensation correction module D may be a gamma correction device (Gamma Correction).
  • the gamma corrector calculates the corresponding compensation gray scale value according to the compensation parameters obtained by the second data module, and sends the compensation gray scale value to the driver chip 31 of the display panel (for example, the source driver chip, also known as Source Driver), the driver chip 31 is electrically connected to the data signal lines arranged in an array in the display panel 3, the driver chip 31 converts the compensated gray scale value into a pixel voltage value, and transmits the pixel voltage value to each pixel through each data signal line Each pixel unit adjusts its transmittance according to the pixel voltage value, so as to adjust the brightness of the display panel 3 corresponding to the lamp area to be compensated.
  • the driver chip 31 of the display panel for example, the source driver chip, also known as Source Driver
  • the driver chip 31 converts the compensated gray scale value into a pixel voltage value, and transmits the pixel voltage value to each pixel through each data signal line
  • Each pixel unit adjusts its transmittance according to the pixel voltage value, so as to adjust the brightness of the display panel 3
  • the brightness of each lamp area is determined according to the maximum gray scale of the display picture corresponding to the lamp area.
  • the brightness of the lamp area is determined according to the maximum gray scale of the display screen corresponding to the lamp area; compared with the situation where the brightness of all the lamp areas is controlled to be the same, the power consumption of the backlight module can be significantly reduced ,cut costs.
  • the lamp zone to be compensated includes at least one of other lamp zones except the reference lamp zone.
  • An embodiment of the present application also provides a display device, including the above brightness adjustment system.
  • the display device includes a display module 10 and a controller 2 , and the display module 10 includes a backlight module 1 and a display panel 3 .
  • the controller 2 may include a timing controller (TCON).
  • TCON timing controller
  • the display device may be a display device of SDR (Standard Dynamic Range, common dynamic range) technology, or may also be a display device of HDR (High-Dynamic Range, high dynamic range) technology.
  • SDR Standard Dynamic Range, common dynamic range
  • HDR High-Dynamic Range, high dynamic range
  • the display panel in the display device is an LCD display panel (Liquid Crystal Display, liquid crystal display panel), and the liquid crystal display panel may be TN (Twisted Nematic, twisted nematic) type, VA (Vertical Alignment , vertical alignment) type, IPS (In-Plane Switching, in-plane switching) type or ADS (Advanced Super Dimension Switch, advanced ultra-dimensional field switching) type and other liquid crystal display panels.
  • LCD display panel Liquid Crystal Display, liquid crystal display panel
  • the liquid crystal display panel may be TN (Twisted Nematic, twisted nematic) type, VA (Vertical Alignment , vertical alignment) type, IPS (In-Plane Switching, in-plane switching) type or ADS (Advanced Super Dimension Switch, advanced ultra-dimensional field switching) type and other liquid crystal display panels.
  • the display device by using the lamp area with the highest brightness in the display screen of the same frame as the reference lamp area, the brightness of the reference lamp area is used as a reference, and the brightness of the reference lamp area and the brightness of the lamp area to be compensated are determined. Compensation parameters, after converting the compensation parameters of the lamp area to be compensated into the compensation gray scale data of the display panel, the transmittance of the display panel is adjusted according to the compensation gray scale data, so as to achieve different The purpose of compensating the brightness of the backlight in the lamp area is to improve the uneven brightness of the display screen of the display module and improve the display effect.

Landscapes

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

Abstract

本申请提供了一种亮度调节方法、亮度调节系统、显示装置，涉及显示技术领域，该亮度调节方法包括：将背光模组分为多个灯区；根据各灯区的亮度，确定参考灯区；根据参考灯区的亮度，确定待补偿灯区的补偿参数；将补偿参数转换为显示面板的补偿灰阶数据；根据补偿灰阶数据，控制待补偿灯区对应的显示画面显示更新后的亮度。本申请的亮度调节方法，以参考灯区的亮度为基准，通过调节待补偿灯区对应的显示面板中的补偿灰阶数据，以实现通过显示面板的补偿灰阶数据对待补偿灯区的背光进行补偿的目的，从而改善了显示模组的显示画面的亮度不均问题，提高显示效果。

Description

亮度调节方法、亮度调节系统、显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种亮度调节方法、亮度调节系统、显示装置。
背景技术
随着显示技术的快速发展，Mini LED(Mini Light Emitting Diode，毫米发光二极管)和Micro LED(Micro Light Emitting Diode，微型发光二极管)显示产品引起了人们广泛的关注。然而，Mini LED和Micro LED显示产品的显示画面存在亮度不均的问题，降低了显示效果。
发明内容
本申请的实施例采用如下技术方案：
一方面，本申请的实施例提供了一种亮度调节方法，应用于显示模组，所述显示模组包括背光模组和显示面板，所述显示面板位于所述背光模组的出光侧，所述调节方法包括：
将所述背光模组分为多个灯区；
根据各所述灯区的亮度，确定参考灯区；
根据所述参考灯区的亮度，确定待补偿灯区的补偿参数；
将所述补偿参数转换为所述显示面板的补偿灰阶数据；
根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度。
在本申请的一些实施例中，所述根据各所述灯区的亮度，确定参考灯区包括：
在一帧显示画面下，确定各所述灯区的亮度；
选取亮度最大的所述灯区作为所述参考灯区。
在本申请的一些实施例中，所述根据所述参考灯区的亮度，确定待补偿灯区的补偿参数包括：
在一帧显示画面下，确定所述参考灯区的亮度；
确定所述待补偿灯区的亮度；
根据同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数。
在本申请的一些实施例中，所述根据同一帧显示画面下所述参考灯 区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数包括：
将同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度的比值，作为所述待补偿灯区的所述补偿参数。
在本申请的一些实施例中，所述根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度包括：
根据所述补偿灰阶数据，更新所述待补偿灯区对应的显示面板的透过率；其中，所述待补偿灯区对应的显示画面的更新后的亮度等于所述待补偿灯区的亮度乘以更新后的透过率。
在本申请的一些实施例中，所述在一帧显示画面下，确定各所述灯区的亮度包括：
在一帧显示画面下，确定各所述灯区对应的显示画面的最大灰阶；
根据所述灯区对应的显示画面的最大灰阶，确定所述灯区的亮度。
在本申请的一些实施例中，所述待补偿灯区包括除所述参考灯区之外的其它所述灯区中的至少一个。
另一方面，本申请的实施例提供了一种亮度调节系统，包括：控制器和显示模组，所述显示模组包括背光模组和显示面板，所述背光模组和所述显示面板分别与所述控制器电连接；
其中，所述控制器包括分区调光单元和控制单元；所述分区调光单元分别与所述控制单元和所述背光模组电连接；
所述分区调光单元被配置为将所述背光模组分为多个灯区；根据各所述灯区的亮度，确定参考灯区；根据所述参考灯区的亮度，确定待补偿灯区的补偿参数；
所述控制单元被配置为获取所述补偿参数，将所述补偿参数转换为所述显示面板的补偿灰阶数据；根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度。
在本申请的一些实施例中，其中，所述分区调光单元包括分区子单元和调光子单元；
所述分区子单元被配置为将所述背光模组分为多个所述灯区；
所述调光子单元被配置为根据各所述灯区的亮度，确定所述参考灯区；根据所述参考灯区的亮度，确定所述待补偿灯区的所述补偿参数。
在本申请的一些实施例中，所述调光子单元包括第一数据获取模块 和补偿运算模块；
所述第一数据获取模块被配置为在一帧显示画面下，获取各所述灯区的亮度；获取所述参考灯区的亮度；获取所述待补偿灯区的亮度；
所述补偿运算模块被配置为选取亮度最大的所述灯区作为所述参考灯区；根据同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数；其中，所述补偿参数为同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度的比值。
在本申请的一些实施例中，所述控制单元包括第二数据获取模块和补偿校正模块；
所述第二数据获取模块被配置为获取所述待补偿灯区的所述补偿参数；
所述补偿校正模块被配置为将所述补偿参数转换为所述显示面板的补偿灰阶数据；根据所述补偿灰阶数据，控制更新所述待补偿灯区对应的显示面板的透过率；其中，所述待补偿灯区对应的显示画面的更新后的亮度等于所述待补偿灯区的亮度乘以更新后的透过率。
在本申请的一些实施例中，各所述灯区的亮度根据所述灯区对应的显示画面的最大灰阶确定。
在本申请的一些实施例中，所述待补偿灯区包括除所述参考灯区之外的其它所述灯区中的至少一个。
又一方面，本申请的实施例还提供了一种显示装置，包括如上所述的亮度调节系统。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1a和图1b为本申请实施例提供的不同灯区对应的显示模组的灰阶-透过率曲线图；
图2为本申请实施例提供的一种亮度调节方法流程图；
图3为本申请实施例提供的一种背光模组的灯区排布示意图；
图4a为本申请实施例提供的一种亮度调节系统的结构示意图；
图4b为本申请实施例提供的另一种亮度调节系统的结构示意图。
具体实施例
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在图中，为了清晰，可能夸大了区域和层的厚度。在图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。
在本申请的实施例中，除非另有说明，“多个”的含义是两个或两个以上；术语“上”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的结构或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
除非上下文另有要求，否则，在整个说明书和权利要求书中，术语“包括”被解释为开放、包含的意思，即为“包含，但不限于”。在说明书的描述中，术语“一个实施例”、“一些实施例”、“示例性实施例”、“示例”、“特定示例”或“一些示例”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本申请的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外，所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。
在本申请的实施例中，采用“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分，仅为了清楚描述本申请实施例的技术方案，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。
随着显示技术的快速发展，人们对于显示产品画质的要求越来越高。画质的高低受到背光模组提供的光源的影响，相关技术中的Mini LED背光模组，可以通过局部调光功能对背光模组进行分区控制，例如，可以单独控制一个灯区处于点亮状态或者熄灭状态。在实际应用中，在将该背光模组应用于显示产品时，由于背光模组的各灯区的最大亮度存在差异，以致显示产品的显示画面中也出现亮度不均的问题。
在相关技术中，显示模组包括背光模组和位于背光模组的出光侧上的显示面板，背光模组中不同分区的最大亮度不同，在实际应用中，若背光模组中分区A(Area A)的亮度为Y1，分区B(Area B)的亮度为Y2，且Y1≠Y2；结合图1a和图1b所示，在相同灰阶的情况下，分区A对应的显示模组的部分区域和分区B对应的显示模组的部分区域的透过率相同。举例来说，在La灰阶下，分区A对应的显示模组的部分区域和分区B对应的显示模组的部分区域的透过率均为T1；在Lb灰阶下，分区A对应的显示模组的部分区域和分区B对应的显示模组的部分区域的透过率均为T2；由于显示模组的局部区域的亮度＝背光模组的分区的亮度*分区对应的显示模组的部分区域的透过率，且在同一灰阶下，不同分区的亮度不同，在显示模组显示纯色画面时，显示画面亮度不均的问题非常显著，严重降低了显示效果。
基于此，本申请的实施例提供了一种亮度调节方法，应用于显示模组，显示模组包括背光模组和显示面板，显示面板位于背光模组的出光侧。需要说明的是，本申请提供的亮度补偿方法对显示模组的任意一帧画面都可以补偿，不仅仅局限于纯色画面。
具体的，参考图2所示，该调节方法包括：
S901、将背光模组分为多个灯区；
示例性的，可以将背光模组分为9个灯区、16个灯区、25个灯区，甚至分为3000～5000个灯区。对于分区之后的每一个灯区，可以单独控制其状态，例如：单独控制一个灯区处于点亮状态或者熄灭状态；也可以单独控制其亮度，例如单独控制一个灯区，使其亮度增大或减小。
图3示出了将背光模组的背光源分为16个灯区的示意图，图3中的每一个方块代表一个灯区。
在示例性的实施例中，背光模组可以是Mini LED(Mini Light Emitting Diode，毫米发光二极管)背光模组；或者，还可以是Micro LED (Micro Light Emitting Diode，微型发光二极管)背光模组。
图3示出了将背光模组的背光源分为16个灯区的示意图，图3中的每一个方块代表一个灯区。
S902、根据各灯区的亮度，确定参考灯区；
在实际应用中，通过在同一帧显示画面下，确定各灯区的亮度；选取一帧显示画面下亮度最大的灯区作为参考灯区。
在示例性的实施例中，在同一帧显示画面下，各灯区的亮度可以相同；或者，各灯区的亮度可以不同；或者，部分灯区的亮度相同，部分灯区的亮度不同。
在示例性的实施例中，在同一帧显示画面下，各灯区的亮度与该灯区对应的显示画面的最大灰阶值相关。例如：灯区1对应的显示画面的最大灰阶为L200，可以通过背光模组的分区控制功能控制灯区1的亮度满足灰阶为L200的显示画面的亮度；灯区2对应的显示画面的最大灰阶为L250，可以通过背光模组的分区控制功能控制灯区2的亮度满足灰阶为L250的显示画面的亮度；灯区1的亮度和灯区2的亮度不同，这样，相较于将所有灯区的亮度控制为相同的情况，可以显著降低背光模组的功耗，降低成本。
需要说明的是，上述显示画面的最大灰阶值指的是显示画面对应的显示像素的最大灰阶。
S903、根据参考灯区的亮度，确定待补偿灯区的补偿参数；
在示例性的实施例中，确定补偿参数的过程如下：在一帧显示画面下，确定参考灯区的亮度；确定待补偿灯区的亮度；根据同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度，确定待补偿灯区的补偿参数。
待补偿灯区的补偿参数为同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度的比值；其中，每一个待补偿灯区对应一个补偿参数。
在示例性的实施例中，可以同时确定一帧显示画面下参考灯区的亮度和待补偿灯区的亮度；或者，也可以先确定参考灯区的亮度，再确定待补偿灯区的亮度；或者，也可以先确定待补偿灯区的亮度，再确定参考灯区的亮度。
在示例性的实施例中，待补偿灯区包括除参考灯区之外的至少一个灯区。
在示例性的实施例中，在待补偿灯区的数量为多个的情况下，可以 同时确定各待补偿灯区的亮度；或者，也可以依次确定各待补偿灯区的亮度。
S904、将补偿参数转换为显示面板的补偿灰阶数据；
在示例性的实施例中，对于一个待补偿灯区，在将补偿参数转换为显示面板的补偿灰阶数据时，根据该待补偿灯区对应的显示画面的亮度需求和补偿参数，将待补偿灯区的补偿参数转换为待补偿灯区对应的显示面板的各像素的补偿灰阶数据，其中，补偿灰阶数据的数量与待补偿灯区对应的显示面板的区域中的像素的数量相同，即一个像素对应一个补偿灰阶数据。
在实际应用中，通过显示模组中的背光区域调节器(Local Dimming Controlling)计算出待补偿灯区的补偿参数，显示模组中的时序控制器(TCON)获取待补偿灯区的补偿参数，并将该补偿参数转换为与待补偿灯区对应的显示面板中是像素灰阶值，再转化为待补偿灯区对应的显示面板的像素区的像素电压，由补偿参数转换得到的像素灰阶值和像素电压均可以为补偿灰阶数据。
S905、根据补偿灰阶数据，控制待补偿灯区对应的显示画面显示更新后的亮度。
在实际应用中，通过补偿灰阶数据，控制更新待补偿灯区对应的显示面板的透过率，以实现对不同灯区的背光的补偿。
在示例性的实施例中，可以根据补偿灰阶数据，更新待补偿灯区对应的显示面板的透过率；其中，待补偿灯区对应的显示画面的更新后的亮度等于待补偿灯区的亮度乘以更新后的透过率。
在示例性的实施例中，补偿灰阶数据可以包括待补偿灯区对应的显示面板局部区域的各像素的像素灰阶值以及像素电压。具体的，通过时序控制器(TCON)将补偿灰阶值传输给显示面板的驱动芯片(例如源驱动芯片，又称Source Driver)，驱动芯片与显示面板中阵列排布的数据信号线电连接，驱动芯片将补偿灰阶值转换为像素电压值，并通过各数据信号线将像素电压值传输给各像素单元。
本申请的实施例提供了一种亮度调节方法，应用于显示模组，显示模组包括背光模组和显示面板，显示面板位于背光模组的出光侧，调节方法包括：将背光模组分为多个灯区；根据各灯区的亮度，确定参考灯区；根据参考灯区的亮度，确定待补偿灯区的补偿参数；将补偿参数转 换为显示面板的补偿灰阶数据；根据补偿灰阶数据，控制待补偿灯区对应的显示画面显示更新后的亮度。
本申请的实施例中，将同一帧显示画面中亮度最大的灯区作为参考灯区，以参考灯区的亮度为基准，通过调节待补偿灯区对应的显示面板中的补偿灰阶数据，以实现通过显示面板的补偿灰阶数据对不同灯区的背光进行补偿的目的，从而改善了显示模组的显示画面的亮度不均问题，提高显示效果。
在本申请的一些实施例中，步骤S902、根据各灯区的亮度，确定参考灯区包括：
S9021、在一帧显示画面下，确定各灯区的亮度；
在示例性的实施例中，步骤S9021、在一帧显示画面下，确定各灯区的亮度包括：
子步骤1：在一帧显示画面下，确定各灯区对应的显示画面的最大灰阶；
子步骤2：根据灯区对应的显示画面的最大灰阶，确定灯区的亮度。
在实际应用中，可以通过背光区域调节器分别确定各灯区的亮度。
在示例性的实施例中，在同一帧显示画面下，各灯区的亮度可以相同；或者，各灯区的亮度也可以不同。
示例的，在第一帧显示画面下，灯区1和灯区2的亮度相同；在第二帧显示画面下，灯区1和灯区2的亮度不同。
S9022、选取亮度最大的灯区作为参考灯区。
示例性的，灯区1对应的显示面板的像素的最大灰阶为L200，灯区1能够提供满足显示面板显示灰阶L200对应的画面亮度；灯区2对应的显示面板的像素的最大灰阶为L250，灯区2能够提供满足显示面板显示灰阶L250对应的画面亮度，灯区1和灯区2的亮度不同，且灯区2的亮度大于灯区1的亮度。
本申请的实施例中，通过根据灯区对应的显示画面的最大灰阶，确定灯区的亮度；相较于相关技术中将各点亮的灯区的亮度设置为相同，且各点亮的灯区的亮度为显示面板中各像素需要的最高灰阶对应的亮度的方式，可以显著降低背光模组的功耗，降低成本。
在本申请的一些实施例中，步骤S903、根据参考灯区的亮度，确定待补偿灯区的补偿参数包括：
S9031、在一帧显示画面下，确定参考灯区的亮度；
在一帧显示画面下，将各灯区中亮度最大的灯区作为参考灯区，并确认该灯区的亮度；
S9032、确定待补偿灯区的亮度；
S9033、根据同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度，确定待补偿灯区的补偿参数。
在示例性的实施例中在对一个待补偿灯区进行补偿时，将同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度的比值，作为待补偿灯区的补偿参数。其中，一个待补偿灯区，对应一个补偿参数。例如，在同一帧画面下，灯区a为参考灯区，且灯区a的亮度为Yref，灯区b为待补偿灯区，且灯区b的亮度为Yb；则灯区b的补偿参数为Yref/Yb。
在实际应用中，对于一个待补偿灯区，在将补偿参数转换为显示面板的补偿灰阶数据时，根据该待补偿灯区对应的显示画面的亮度需求和补偿参数，将待补偿灯区的补偿参数转换为待补偿灯区对应的显示面板的各像素的补偿灰阶数据，其中，补偿灰阶数据的数量与待补偿灯区对应的显示面板的区域中的像素的数量相同，即一个像素对应一个补偿灰阶数据。
在本申请的一些实施例中，步骤S905、根据补偿灰阶数据，控制待补偿灯区对应的显示画面显示更新后的亮度包括：
S9051、根据补偿灰阶数据，更新待补偿灯区对应的显示面板的透过率；其中，待补偿灯区对应的显示画面的更新后的亮度等于待补偿灯区的亮度乘以更新后的透过率。
在示例性的实施例中，补偿灰阶数据可以包括待补偿灯区对应的显示面板局部区域的各像素的像素灰阶值以及像素电压。具体的，通过时序控制器(TCON)将补偿灰阶值传输给显示面板的驱动芯片(例如源驱动芯片，又称Source Driver)，驱动芯片与显示面板中阵列排布的数据信号线电连接，驱动芯片将补偿灰阶值转换为像素电压值，并通过各数据信号线将像素电压值传输给各像素单元，各像素单元根据像素电压值调整其透过率，从而对待补偿灯区对应的显示面板的亮度进行调节。
示例性的，对于待补偿灯区对应的显示面板中的某一像素而言，其待显示灰阶为L200，其所在灯区亮度为Y2，参考灯区亮度为Yref，补偿参数＝Yref/Y2。在进行补偿之前，该像素的亮度＝T1*Y2；在经过补偿 之后，其更新之后的亮度＝T2*Y2。其中，T1为更新前的透过率，T2为更新后的透过率，T2＝T1*X，X可以根据补偿参数Yref/Y2确定。需要说明的是，在实际应用中，各像素的透过率可以通过各像素的像素电压进行调节。
在本申请的实施例中，通过将同一帧显示画面中亮度最大的灯区作为参考灯区，以参考灯区的亮度为基准，根据参考灯区的亮度和待补偿灯区的亮度确定补偿参数，在将待补偿灯区的补偿参数转换为显示面板的补偿灰阶数据，根据补偿灰阶数据，对显示面板的透过率进行调整，以实现通过显示面板的补偿灰阶数据对不同灯区的背光亮度进行补偿的目的，从而改善了显示模组的显示画面的亮度不均问题，提高显示效果。
在本申请的一些实施例中，待补偿灯区包括除参考灯区之外的其它灯区中的至少一个。
本申请的实施例提供了一种亮度调节系统，参考图4a所示，包括：控制器2和显示模组10，显示模组10包括背光模组1和显示面板3，背光模组1和显示面板3分别与控制器2电连接；
其中，控制器2包括分区调光单元21和控制单元22；分区调光单元21分别与控制单元22和背光模组1电连接；
分区调光单元21被配置为将背光模组1分为多个灯区；根据各灯区的亮度，确定参考灯区；根据参考灯区的亮度，确定待补偿灯区的补偿参数；
控制单元22被配置为获取补偿参数，将补偿参数转换为显示面板的补偿灰阶数据；根据补偿灰阶数据，控制待补偿灯区对应的显示画面显示更新后的亮度。
在示例性的实施例中，控制器2可以是时序控制器(TCON)，分区调光单元21可以是分区调光控制器(LDC，Local dimming controller)，控制单元22可以是多点控制设备(MCU，Microcontroller Unit)。
在本申请的实施例中，上述背光模组可以为Mini LED类型的背光模组，或者，也可以是Micro LED类型的背光模组，具体根据实际情况确定，这里不进行限定。
在示例性的实施例中，该系统还包括PC母板或者视频采集卡(Graphics Cards)，PC母板或者视频采集卡与控制器2之间可以通过 EDP接口连接，以将视频流信号传输至控制器2中，通过控制器2中的各个模块对视频流信号进行逻辑运算，将得到的信号通过SPI接口传输给显示面板3，从而通过控制显示面板中各像素的透过率对显示模组整体的亮度进行调节。
在示例性的实施例中，控制器2通过LED驱动器(LED Driver)与背光模组1之间电连接。
需要说明的是，EDP接口是一种基于DisplayPort架构和协议的一种全数字化接口，可以用较简单的连接器以及较少的引脚来传递高分辨率信号，且能够实现多数据同时传输。SPI(Serial Peripheral Interface--串行外设接口)是一种同步串行外设接口，它可以使MCU与各种外围设备以串行方式进行通信以交换信息。
本申请的实施例提供的亮度调节系统，通过将同一帧显示画面中亮度最大的灯区作为参考灯区，以参考灯区的亮度为基准，根据参考灯区的亮度和待补偿灯区的亮度确定补偿参数，在将待补偿灯区的补偿参数转换为显示面板的补偿灰阶数据，根据补偿灰阶数据，对显示面板的透过率进行调整，以实现通过显示面板的补偿灰阶数据对不同灯区的背光亮度进行补偿的目的，从而改善了显示模组的显示画面的亮度不均问题，提高显示效果。
在本申请的一些实施例中，参考图4b所示，分区调光单元21包括分区子单元212和调光子单元211；
分区子单元212被配置为将背光模组1分为多个灯区；
调光子单元211被配置为根据各灯区的亮度，确定参考灯区；根据参考灯区的亮度，确定待补偿灯区的补偿参数。
示例性的，分区调光单元21可以是分区调光控制器(LDC，Local dimming controller)，分区调光控制器可以包括分区子单元和调光子单元211。
具体的，分区子单元212单独控制各个灯区点亮或者熄灭，以到达分区的目的；调光子单元211控制提高或者降低各个灯区的亮度，且调光子单元211可以根据在同一帧显示画面下各灯区的亮度，确定将亮度最大的灯区作为参考灯区；再根据参考灯区的亮度和待补偿灯区的亮度，确定补偿参数。
在示例性的实施例中，调光子单元211包括第一数据获取模块A和 补偿运算模块B；第一数据获取模块A被配置为在一帧显示画面下，获取各灯区的亮度；获取参考灯区的亮度；获取待补偿灯区的亮度；补偿运算模块B被配置为选取亮度最大的灯区作为参考灯区；根据同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度，确定待补偿灯区的补偿参数；其中，补偿参数为同一帧显示画面下参考灯区的亮度和待补偿灯区的亮度的比值。
其中，一个待补偿灯区，对应一个补偿参数。例如，在同一帧画面下，灯区a为参考灯区，且灯区a的亮度为Yref，灯区b为待补偿灯区，且灯区b的亮度为Yb；则灯区b的补偿参数为Yref/Yb。
在本申请的一些实施例中，参考图4b所示，控制单元22包括第二数据获取模块C和补偿校正模块D；
第二数据获取模块C被配置为获取待补偿灯区的补偿参数；
补偿校正模块D被配置为将补偿参数转换为显示面板的补偿灰阶数据；根据补偿灰阶数据，控制更新待补偿灯区对应的显示面板的透过率；其中，待补偿灯区对应的显示画面的更新后的亮度等于待补偿灯区的亮度乘以更新后的透过率。
在示例性的实施例中，补偿灰阶数据可以包括待补偿灯区对应的显示面板局部区域的各像素的像素灰阶值以及像素电压。
示例性的，补偿校正模块D可以为伽玛校正器(Gamma Correction)。
具体的，伽玛校正器根据第二数据模块获取到的补偿参数，计算出相应的补偿灰阶值，并把该补偿灰阶值发送给显示面板的驱动芯片31(例如源驱动芯片，又称Source Driver)，驱动芯片31与显示面板3中阵列排布的数据信号线电连接，驱动芯片31将补偿灰阶值转换为像素电压值，并通过各数据信号线将像素电压值传输给各像素单元，各像素单元根据像素电压值调整其透过率，从而对待补偿灯区对应的显示面板3的亮度进行调节。
在本申请的一些实施例中，各灯区的亮度根据灯区对应的显示画面的最大灰阶确定。
本申请的实施例中，通过根据灯区对应的显示画面的最大灰阶，确定灯区的亮度；相较于将所有灯区的亮度控制为相同的情况，可以显著降低背光模组的功耗，降低成本。
在本申请的一些实施例中，待补偿灯区包括除参考灯区之外的其它 灯区中的至少一个。
本申请的实施例还提供了一种显示装置，包括如上的亮度调节系统。
在示例性的实施例中，显示装置包括显示模组10和控制器2，显示模组10包括背光模组1和显示面板3。
其中，控制器2可以包括时序控制器(TCON)。
在示例性的实施例中，该显示装置可以为SDR(Standard Dynamic Range，普通动态范围)技术的显示装置，或者，也可以为HDR(High-Dynamic Range，高动态范围)技术的显示装置。
在示例性的实施例中，该显示装置中的显示面板为LCD显示面板(Liquid Crystal Display，液晶显示面板)，该液晶显示面板可以是TN(Twisted Nematic，扭曲向列)型、VA(Vertical Alignment，垂直取向)型、IPS(In-Plane Switching，平面转换)型或ADS(Advanced Super Dimension Switch，高级超维场转换)型等液晶显示面板。
本申请的实施例提供的显示装置，通过将同一帧显示画面中亮度最大的灯区作为参考灯区，以参考灯区的亮度为基准，根据参考灯区的亮度和待补偿灯区的亮度确定补偿参数，在将待补偿灯区的补偿参数转换为显示面板的补偿灰阶数据，根据补偿灰阶数据，对显示面板的透过率进行调整，以实现通过显示面板的补偿灰阶数据对不同灯区的背光亮度进行补偿的目的，从而改善了显示模组的显示画面的亮度不均问题，提高显示效果。
对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本发明的限制。该显示装置进行亮度调节的过程可以参考上述对调节系统的具体说明或者参考亮度调节方法的实施例，重复之处不再赘述。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (14)

  1. 一种亮度调节方法，其中，应用于显示模组，所述显示模组包括背光模组和显示面板，所述显示面板位于所述背光模组的出光侧，所述调节方法包括：
    将所述背光模组分为多个灯区；
    根据各所述灯区的亮度，确定参考灯区；
    根据所述参考灯区的亮度，确定待补偿灯区的补偿参数；
    将所述补偿参数转换为所述显示面板的补偿灰阶数据；
    根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度。
  2. 根据权利要求1所述的亮度调节方法，其中，所述根据各所述灯区的亮度，确定参考灯区包括：
    在一帧显示画面下，确定各所述灯区的亮度；
    选取亮度最大的所述灯区作为所述参考灯区。
  3. 根据权利要求1所述的亮度调节方法，其中，所述根据所述参考灯区的亮度，确定待补偿灯区的补偿参数包括：
    在一帧显示画面下，确定所述参考灯区的亮度；
    确定所述待补偿灯区的亮度；
    根据同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数。
  4. 根据权利要求3所述的亮度调节方法，其中，所述根据同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数包括：
    将同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度的比值，作为所述待补偿灯区的所述补偿参数。
  5. 根据权利要求1所述的亮度调节方法，其中，所述根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度包括：
    根据所述补偿灰阶数据，更新所述待补偿灯区对应的显示面板的透过率；其中，所述待补偿灯区对应的显示画面的更新后的亮度等于所述待补偿灯区的亮度乘以更新后的透过率。
  6. 根据权利要求2所述的亮度调节方法，其中，所述在一帧显示 画面下，确定各所述灯区的亮度包括：
    在一帧显示画面下，确定各所述灯区对应的显示画面的最大灰阶；
    根据所述灯区对应的显示画面的最大灰阶，确定所述灯区的亮度。
  7. 根据权利要求1所述的调节方法，其中，所述待补偿灯区包括除所述参考灯区之外的其它所述灯区中的至少一个。
  8. 一种亮度调节系统，其中，包括：控制器和显示模组，所述显示模组包括背光模组和显示面板，所述背光模组和所述显示面板分别与所述控制器电连接；
    其中，所述控制器包括分区调光单元和控制单元；所述分区调光单元分别与所述控制单元和所述背光模组电连接；
    所述分区调光单元被配置为将所述背光模组分为多个灯区；根据各所述灯区的亮度，确定参考灯区；根据所述参考灯区的亮度，确定待补偿灯区的补偿参数；
    所述控制单元被配置为获取所述补偿参数，将所述补偿参数转换为所述显示面板的补偿灰阶数据；根据所述补偿灰阶数据，控制所述待补偿灯区对应的显示画面显示更新后的亮度。
  9. 根据权利要求8所述的亮度调节系统，其中，所述分区调光单元包括分区子单元和调光子单元；
    所述分区子单元被配置为将所述背光模组分为多个所述灯区；
    所述调光子单元被配置为根据各所述灯区的亮度，确定所述参考灯区；根据所述参考灯区的亮度，确定所述待补偿灯区的所述补偿参数。
  10. 根据权利要求9所述的亮度调节系统，其中，所述调光子单元包括第一数据获取模块和补偿运算模块；
    所述第一数据获取模块被配置为在一帧显示画面下，获取各所述灯区的亮度；获取所述参考灯区的亮度；获取所述待补偿灯区的亮度；
    所述补偿运算模块被配置为选取亮度最大的所述灯区作为所述参考灯区；根据同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度，确定所述待补偿灯区的所述补偿参数；其中，所述补偿参数为同一帧显示画面下所述参考灯区的亮度和所述待补偿灯区的亮度的比值。
  11. 根据权利要求8所述的亮度调节系统，其中，所述控制单元包括第二数据获取模块和补偿校正模块；
    所述第二数据获取模块被配置为获取所述待补偿灯区的所述补偿参数；
    所述补偿校正模块被配置为将所述补偿参数转换为所述显示面板的补偿灰阶数据；根据所述补偿灰阶数据，控制更新所述待补偿灯区对应的显示面板的透过率；其中，所述待补偿灯区对应的显示画面的更新后的亮度等于所述待补偿灯区的亮度乘以更新后的透过率。
  12. 根据权利要求10所述的亮度调节系统，其中，各所述灯区的亮度根据所述灯区对应的显示画面的最大灰阶确定。
  13. 根据权利要求8所述的亮度调节系统，其中，所述待补偿灯区包括除所述参考灯区之外的其它所述灯区中的至少一个。
  14. 一种显示装置，其中，包括如权利要求8-13任一项所述的亮度调节系统。
PCT/CN2021/126830 2021-10-27 2021-10-27 亮度调节方法、亮度调节系统、显示装置 WO2023070398A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202180003105.0A CN116368557A (zh) 2021-10-27 2021-10-27 亮度调节方法、亮度调节系统、显示装置
US17/919,856 US20240212636A1 (en) 2021-10-27 2021-10-27 Brightness regulating method, brightness regulating system and display device
PCT/CN2021/126830 WO2023070398A1 (zh) 2021-10-27 2021-10-27 亮度调节方法、亮度调节系统、显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/126830 WO2023070398A1 (zh) 2021-10-27 2021-10-27 亮度调节方法、亮度调节系统、显示装置

Publications (1)

Publication Number Publication Date
WO2023070398A1 true WO2023070398A1 (zh) 2023-05-04

Family

ID=86159002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/126830 WO2023070398A1 (zh) 2021-10-27 2021-10-27 亮度调节方法、亮度调节系统、显示装置

Country Status (3)

Country Link
US (1) US20240212636A1 (zh)
CN (1) CN116368557A (zh)
WO (1) WO2023070398A1 (zh)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097071A (zh) * 2009-12-14 2011-06-15 乐金显示有限公司 液晶显示设备的局部调光驱动方法和设备
RU2491652C1 (ru) * 2009-07-30 2013-08-27 Шарп Кабусики Кайся Устройство отображения изображения и способ отображения изображения
CN103295553A (zh) * 2013-06-26 2013-09-11 青岛海信信芯科技有限公司 直下式背光的亮度补偿方法及显示装置
CN103943080A (zh) * 2014-03-06 2014-07-23 京东方科技集团股份有限公司 一种显示器件像素亮度补偿控制方法及装置
KR20150115080A (ko) * 2014-04-02 2015-10-14 삼성디스플레이 주식회사 표시 패널, 이의 얼룩 보정 시스템 및 이의 얼룩 보정 방법
CN105096875A (zh) * 2015-08-14 2015-11-25 武汉华星光电技术有限公司 一种灰阶控制方法、灰阶控制装置及液晶显示屏
CN106023905A (zh) * 2016-05-27 2016-10-12 京东方科技集团股份有限公司 控制显示设备的方法、显示设备的控制装置以及显示设备
CN107408369A (zh) * 2015-02-23 2017-11-28 佳能株式会社 图像显示设备及其控制方法
CN108428436A (zh) * 2018-05-08 2018-08-21 京东方科技集团股份有限公司 亮度补偿方法、亮度补偿装置、显示装置及存储介质
CN110189715A (zh) * 2019-06-28 2019-08-30 京东方科技集团股份有限公司 用于控制显示设备的显示的方法及其装置以及显示装置
CN110264977A (zh) * 2019-06-25 2019-09-20 惠科股份有限公司 显示亮度调试方法以及装置
CN110930954A (zh) * 2019-12-16 2020-03-27 上海天马微电子有限公司 显示亮度补偿方法及补偿系统
CN111968583A (zh) * 2020-07-23 2020-11-20 昆山国显光电有限公司 显示面板亮度补偿控制方法及亮度补偿控制系统
CN113284461A (zh) * 2021-05-31 2021-08-20 武汉华星光电半导体显示技术有限公司 显示面板的光学补偿方法及存储介质

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2491652C1 (ru) * 2009-07-30 2013-08-27 Шарп Кабусики Кайся Устройство отображения изображения и способ отображения изображения
CN102097071A (zh) * 2009-12-14 2011-06-15 乐金显示有限公司 液晶显示设备的局部调光驱动方法和设备
CN103295553A (zh) * 2013-06-26 2013-09-11 青岛海信信芯科技有限公司 直下式背光的亮度补偿方法及显示装置
CN103943080A (zh) * 2014-03-06 2014-07-23 京东方科技集团股份有限公司 一种显示器件像素亮度补偿控制方法及装置
KR20150115080A (ko) * 2014-04-02 2015-10-14 삼성디스플레이 주식회사 표시 패널, 이의 얼룩 보정 시스템 및 이의 얼룩 보정 방법
CN107408369A (zh) * 2015-02-23 2017-11-28 佳能株式会社 图像显示设备及其控制方法
CN105096875A (zh) * 2015-08-14 2015-11-25 武汉华星光电技术有限公司 一种灰阶控制方法、灰阶控制装置及液晶显示屏
CN106023905A (zh) * 2016-05-27 2016-10-12 京东方科技集团股份有限公司 控制显示设备的方法、显示设备的控制装置以及显示设备
CN108428436A (zh) * 2018-05-08 2018-08-21 京东方科技集团股份有限公司 亮度补偿方法、亮度补偿装置、显示装置及存储介质
CN110264977A (zh) * 2019-06-25 2019-09-20 惠科股份有限公司 显示亮度调试方法以及装置
CN110189715A (zh) * 2019-06-28 2019-08-30 京东方科技集团股份有限公司 用于控制显示设备的显示的方法及其装置以及显示装置
CN110930954A (zh) * 2019-12-16 2020-03-27 上海天马微电子有限公司 显示亮度补偿方法及补偿系统
CN111968583A (zh) * 2020-07-23 2020-11-20 昆山国显光电有限公司 显示面板亮度补偿控制方法及亮度补偿控制系统
CN113284461A (zh) * 2021-05-31 2021-08-20 武汉华星光电半导体显示技术有限公司 显示面板的光学补偿方法及存储介质

Also Published As

Publication number Publication date
US20240212636A1 (en) 2024-06-27
CN116368557A (zh) 2023-06-30

Similar Documents

Publication Publication Date Title
US11030964B2 (en) Image display processing method and device, display device and non-volatile storage medium
KR102349500B1 (ko) 액정표시장치
US8564627B2 (en) Image display device and method of driving image display device
US7142183B2 (en) Liquid crystal display and driving method thereof
US8723894B2 (en) Data processing device having a RGBW generator and a frame rate conversion and method of driving the same
US10510320B2 (en) Display apparatus
JP5117517B2 (ja) カラー・シーケンシャル・ディスプレイ及びその電力節約方法
US20060097981A1 (en) Liquid crystal display and driving method thereof
US20080123000A1 (en) Transflective liquid crystal display panel, liquid crystal display module and liquid crystal display thereof
JP2007328345A (ja) 表示装置、及びそれに搭載される集積回路チップ
US10950190B2 (en) Method and system for determining overdrive pixel values in display panel
CN102568420B (zh) 显示装置
US20150187288A1 (en) White Tracking Adjustment Method, Manufacturing Method of Liquid Crystal Display and Liquid Crystal Display
US10078989B2 (en) Multi-domain liquid crystal display device with improved transmittance and viewing angles
WO2023070398A1 (zh) 亮度调节方法、亮度调节系统、显示装置
TWI719800B (zh) 可切換顯示模式的顯示裝置與方法
CN110415661B (zh) 液晶显示装置及其驱动方法
WO2023284006A1 (zh) 显示面板的驱动方法、显示面板及显示装置
US9202436B2 (en) Display device with auxiliary capacitance line
US20110096107A1 (en) Color sequential liquid crystal display device and related driving method
KR101629515B1 (ko) 액정표시장치
CN103886824A (zh) 透明显示装置及其驱动方法
WO2023050190A1 (zh) 亮度调节方法、调节系统、显示装置
CN104361867B (zh) 拼接屏显示装置以及其显示驱动方法
TWI798863B (zh) 刷新率可變之液晶面板的極性變換方法、液晶顯示器及資訊處理裝置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 17919856

Country of ref document: US

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

Ref document number: 21961767

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE