WO2023010795A1 - 显示装置、公共电压的获取方法及显示控制方法 - Google Patents

显示装置、公共电压的获取方法及显示控制方法 Download PDF

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Publication number
WO2023010795A1
WO2023010795A1 PCT/CN2021/143323 CN2021143323W WO2023010795A1 WO 2023010795 A1 WO2023010795 A1 WO 2023010795A1 CN 2021143323 W CN2021143323 W CN 2021143323W WO 2023010795 A1 WO2023010795 A1 WO 2023010795A1
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WIPO (PCT)
Prior art keywords
common voltage
area
preset data
data
chip
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PCT/CN2021/143323
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English (en)
French (fr)
Inventor
王明良
郑浩旋
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惠科股份有限公司
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Publication of WO2023010795A1 publication Critical patent/WO2023010795A1/zh

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen

Definitions

  • the present application belongs to the field of display technology, and in particular relates to a display device, a method for obtaining a common voltage, and a display control method.
  • the display panel is divided into 9 areas arranged in 3 ⁇ 3. Since the sight line of the human eye will be concentrated on the central area of the display panel, that is, the area of the second row and the second column, the debugging display When displaying the panel, the parameters such as brightness and chromaticity in the central area will be adjusted to the best state according to the viewing habits of the human eye, but the eight surrounding areas are not in the best state due to differences in charging. In this way, the phenomenon of flicker (flicker) will appear in the 8 areas except the central area, or the phenomenon of uneven brightness will appear.
  • Embodiments of the present application provide a display device, a method for obtaining a common voltage, and a display control method, which solve the problem of flickering or uneven brightness in a display panel, and improve the display effect.
  • a display device in a first aspect, includes: a display panel and a control circuit board, the display panel includes a first area and at least one second area, the control circuit board includes a gamma chip and At least one common voltage chip, the gamma chip is used to provide a first common voltage for the first region, and the at least one common voltage chip is used to provide a second common voltage for the at least one second region; wherein, The magnitudes of the first common voltage and the second common voltage are different.
  • the number of common voltage chips is less than or equal to the number of the second region.
  • the display panel is divided into a first area and at least one second area, a gamma chip and at least one common voltage chip are arranged in the control circuit board, and the gamma chip is used for the first area
  • the first common voltage is provided, and the common voltage chip provides the second common voltage for the second region. Since the magnitudes of the first common voltage and the second common voltage are different, the pixels in the first region and the pixels in the second region are charged differently. Therefore, by providing different common voltages in different regions, uniform charging and uniform brightness of the display panel can be realized.
  • the first area is located at the center of the display panel, and the multiple second areas are located at the first on either side or sides of the area.
  • the pixels in the second regions on both sides and the pixels in the first region in the center are uniformly charged and the brightness is uniform.
  • the at least one common voltage chip has a one-to-many or one-to-one correspondence relationship with the at least one second area, and each of the second areas corresponds to one of the The common voltage chips, different common voltage chips are used to provide second common voltages of different sizes.
  • pixels located in different second regions of the display panel can achieve uniform charging by setting different second common voltages, thereby achieving uniform brightness.
  • the display effect of each region of the display panel can be in an optimal state.
  • control circuit board further includes: a timing controller, the timing controller is respectively connected to the gamma chip and each common voltage chip; when the row driving position belongs to the first When within a region, the timing controller is used to provide the first preset data corresponding to the row driving position to the gamma chip according to the row driving position, and the gamma chip is used to set the row driving position to the gamma chip.
  • the first preset data is converted into the first common voltage, and different first preset data correspond to different first common voltages; when the row driving position belongs to the range of the target second area, the timing controller also for providing the second preset data corresponding to the row driving position to the common voltage chip corresponding to the target second region according to the row driving position, and the common voltage chip corresponding to the target second region is used for converting the second preset data into the second common voltage, and different second preset data correspond to different second common voltages.
  • the row driving position refers to a row position at which a scan driving signal is provided to the display panel when the scan driving circuit drives the display panel and scans row by row.
  • the first common data provided to the first region can be continuously adjusted according to the first preset data.
  • Voltage Different row driving positions correspond to different second preset data.
  • the second common voltage provided to the target second area can be continuously adjusted according to the second preset data, so that each area of the display panel can be adjusted to The best state, and then achieve the purpose of no flicker.
  • the timing controller includes: a row counter, a control unit, and a memory, and the control unit communicates with the row counter, the memory, the gamma chip, and each The common voltage chips are all connected; the row counter is used to detect the row driving position; the memory is used to store a first data group and a plurality of second data groups, and the first data group includes a plurality of second data groups One preset data, each second data group includes a plurality of second preset data, different groups of second data groups correspond to different common voltage chips; the control unit is used to obtain the row driving position from the row counter , and obtain the first preset data corresponding to the row driving position from the memory according to the row driving position, and/or, the second preset data corresponding to the row driving position in the plurality of second data groups preset data; the control unit is also used to provide the first preset data to the gamma chip, and second preset data corresponding to the row drive position in the plurality of second data groups Provided to
  • the gamma chip includes a first data-to-analog converter, and the first data-to-analog converter is used to convert the first preset data into a first common voltage;
  • the common voltage chip includes a second data-to-analog converter for converting the second preset data into a second common voltage.
  • each second data group includes a plurality of identical second preset data
  • the control unit when the row driving position belongs to the range of the target second area, the control unit according to When the row driving position does not obtain the second preset data corresponding to the row driving position from the second data group corresponding to the target second area, the control unit is configured to: The second preset data corresponding to the plurality of second areas with the second preset data which are closest to the target second area are interpolated to determine the second preset data corresponding to the target second area.
  • the second preset data when storing the second preset data, a small amount of data can be stored, and the second preset data of all regions can be obtained later by an interpolation algorithm, which can not only reduce the storage space, but also meet the requirement of uniform brightness. At the same time, the algorithm is relatively simple and will not affect the processing speed.
  • control unit is further configured to: according to the second preset data corresponding to a second area closest to the target second area and having the second preset data, and the second preset data corresponding to the target second area, determining the second preset data respectively corresponding to a plurality of second areas located between the second area and the target second area in proportion.
  • the second preset data corresponding to all the second regions can be calculated with the least amount of data, which is beneficial to reduce storage space.
  • the number of the common voltage chips is less than or equal to the number of the second regions.
  • the display device further includes: a first circuit board connected to both the display panel and the control circuit board; the first circuit board is configured to receive the first a common voltage and the second common voltage, and provide the first common voltage and the second common voltage to the display panel.
  • the first circuit board includes a data driving circuit, and the first circuit board is configured to receive a data signal and generate a grayscale voltage signal for driving the display panel to display.
  • the display device further includes: a second circuit board connected to the display panel; the second circuit board includes a gate drive circuit, and the gate drive circuit uses for generating scan driving signals for driving the display panel to display.
  • the timing controller is configured to transmit the first preset data to the gamma chip through a transmission interface I2C protocol.
  • a second aspect provides a method for acquiring a common voltage, which is applied to the display device in the first aspect or any possible implementation of the first aspect.
  • the method includes: using an image capture device to acquire each A plurality of brightness values corresponding to the region, and obtaining a common voltage corresponding to each brightness value, and establishing a first correspondence between the plurality of brightness values and the plurality of common voltages; the common voltage includes the first common voltage and The second common voltage; according to the multiple brightness values corresponding to each area, determine the corresponding multiple flicker values, and establish a second corresponding relationship between the multiple brightness values and the multiple flicker values; according to the first The corresponding relationship and the second corresponding relationship, determine the third corresponding relationship between the common voltage and the plurality of flicker values; determine the minimum flicker value among the plurality of flicker values corresponding to each area; The minimum flicker value and the third corresponding relationship determine that the common voltage corresponding to the minimum flicker value of each region is an optimal value of the common voltage and store it.
  • the embodiment of the present application provides a method for obtaining a common voltage, using a capture device to obtain multiple luminance values corresponding to each area in the display panel, and obtaining the common voltage corresponding to each luminance value, thus, multiple A first corresponding relationship between brightness values and multiple common voltages. Then, according to the multiple luminance values corresponding to each area, the corresponding multiple flicker values are determined, thus, the second corresponding relationship between the multiple brightness values and the multiple flicker values can be established. According to the first correspondence relationship and the second correspondence relationship, a third correspondence relationship between the multiple common voltages and the multiple flicker values can be determined. Then by determining the minimum flicker value corresponding to each area, the common voltage corresponding to the minimum flicker value is further determined from the third correspondence, which is the optimal value of the common voltage corresponding to each area.
  • a display control method which adjusts the common voltage corresponding to each region of the display panel according to the optimal value of the common voltage obtained by the method described in the second aspect.
  • the embodiment of the present application provides a display control method.
  • the common voltage corresponding to each area of the display panel is adjusted, and the common voltage corresponding to each area is the optimal value. value, the corresponding minimum degree of flicker, thereby reducing the flicker phenomenon of the entire display panel, or the flicker of the entire display panel will disappear.
  • a display control device configured to execute the processing steps in the method for obtaining a common voltage as described in the first aspect above, and/or, execute the display control method as described in the second aspect above.
  • a computer-readable storage medium stores computer programs or instructions, and when the computer reads and executes the computer programs or instructions, the computer executes the above-mentioned first aspect.
  • the display panel is divided into a first area and at least one second area, and a gamma chip and at least one common voltage are arranged in the control circuit board chip, and provide the first common voltage for the first area through the gamma chip, and the common voltage chip provides the second common voltage for the second area. Since the first common voltage and the second common voltage are different in size, the The pixels in the second region are charged differently from those in the second region. Therefore, by providing different common voltages in different regions, uniform charging and uniform brightness of the display panel can be realized.
  • FIG. 1 is a schematic structural diagram of a display device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of another display device provided by an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a control circuit board provided by an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of another control circuit board provided by the embodiment of the present application.
  • FIG. 5 is a schematic diagram of a memory provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for obtaining a common voltage provided by an embodiment of the present application.
  • 1-display device 10-display panel; 11-first area; 12-second area; 21-control circuit board; 211-timing controller (TCON); 2111-line counter; 2112-memory; 2113-control unit 212-gamma chip; 213-common voltage chip; 22-first circuit board; 23-second circuit board; 31-first data group; 32-second data group.
  • TCON timing controller
  • 2111-line counter 2112-memory
  • 2113-control unit 212-gamma chip
  • 213-common voltage chip 22-first circuit board; 23-second circuit board; 31-first data group; 32-second data group.
  • FIG. 1 and FIG. 2 are schematic structural diagrams of a display device provided by an embodiment of the present application.
  • the display device 1 includes: a display panel 10 and a control circuit board 21 .
  • the display panel 10 includes a first area 11 and at least one second area 12
  • the control circuit board 21 includes a gamma chip 212 and at least one common voltage chip 213 .
  • the number of common voltage chips 213 is less than or equal to the number of the second region 12 .
  • the gamma chip 212 is used to provide the first common voltage to the first region 11
  • one or more common voltage chips 213 is used to provide the second common voltage to one or more second regions 12 .
  • the magnitudes of the first common voltage and the second common voltage are different.
  • the gamma chip 212 is also used to generate gamma voltages.
  • the display device 1 further includes a first circuit board 22 connected to both the display panel 10 and the control circuit board 21 , and the first circuit board 22 includes a data driving circuit.
  • the first circuit board 22 receives the data signal and generates a grayscale voltage signal for driving the display panel 10 to display.
  • the first circuit board 22 is also used for receiving the first common voltage and the second common voltage, and providing the first common voltage and the second common voltage to the display panel 10 .
  • the display device 1 further includes a second circuit board 23 connected to the display panel 10, the second circuit board 23 includes a gate drive circuit, and the gate drive circuit is used to generate a scan drive signal for driving the display panel 10 to display.
  • the scan driving signal can drive the display panel 10 to perform progressive scan display.
  • the numbers of the first circuit board 22 and the number of the second circuit board 23 shown in FIG. 1 and FIG. 2 are only examples, and the embodiment of the present application has no limitation thereto.
  • four first circuit boards 22 may also be provided.
  • the second circuit board 23 may not be provided.
  • the number of the second area 12 can be one or more, and the size, shape, and position of the first area 11 and the second area 12 can be set and changed as required. In the embodiment of the present application, There are no restrictions on this.
  • control circuit board 21 may be one or multiple, which is not limited in this embodiment of the present application.
  • each common voltage chip 213 may correspond to one or more second regions 12, and each common voltage chip 213 is used for the corresponding One or more second regions 12 provide the second common voltage.
  • each common voltage corresponds to one second region, and each common voltage chip 213 is used to provide the second common voltage to the corresponding one second region 12 .
  • the pixels located in the first region 11 Since the first common voltage provided by the gamma chip 212 for the first region 11 is different from the second common voltage provided by the several common voltage chips 213 for the several second regions 12, the pixels located in the first region 11 The charging of the pixel in the second area 12 is different from that of the pixels located in the second area 12, so that the brightness corresponding to the first area 11 is different from the brightness corresponding to the second area 12, thus, by setting different first common voltages and second common voltages The voltage can make the pixels located in different regions of the display panel 10 gradually uniformly charged, thereby uniformizing the brightness.
  • An embodiment of the present application provides a display device.
  • a gamma chip and at least one common voltage chip are arranged in the control circuit board, and the gamma chip provides The first area provides the first common voltage, and the common voltage chip provides the second common voltage for the second area. Since the first common voltage and the second common voltage are different in size, the pixels located in the first area and the pixels located in the second area Charging is different. Therefore, by providing different common voltages in different regions, uniform charging and uniform brightness of the display panel can be realized.
  • the first region 11 is located at the center of the display panel 10
  • the multiple second regions 12 are located on both sides or surroundings of the first region 11 .
  • the two second regions 12 are located on both sides of the first region 11, and the first region 11 is located on the display panel. Center of 10.
  • the first common voltage can be provided to the first region 11 located in the center through the gamma chip 212
  • the second common voltage can be provided to the two second regions 12 on both sides through one or two common voltage chips 213 .
  • the eight second regions 12 are located around the first region 11, that is, the eight second regions 12 surround The first area 11 is provided, and the first area 11 is located in the center.
  • the first common voltage can be provided to the centrally located first region 11 through the gamma chip 212
  • the second common voltage can be provided to the eight second regions 12 through one or at most eight common voltage chips 213 .
  • At least one common voltage chip 213 has a one-to-many or one-to-one correspondence relationship with at least one second region 12, and each second region corresponds to a common voltage chip; different common voltage chips 213 Second common voltages of different magnitudes are provided.
  • each common voltage chip 213 may correspond to one or more second regions 12, and each common voltage chip 213 is used for the corresponding One or more second regions 12 provide the second common voltage.
  • the second common voltages corresponding to one or more second regions 12 corresponding to different common voltage chips 213 are different.
  • the common voltage chip G1 corresponds to the second area a and the second area b
  • the common voltage chip G2 corresponds to the second area c
  • the common voltage chip G1 provides the second common voltage for the second area a and the second area b
  • the common The second common voltage provided by the voltage chip G2 to the second region c is different.
  • each common voltage corresponds to one second region 12, and each common voltage chip 213 is used to provide the second common voltage to the corresponding one second region 12 .
  • the second common voltages corresponding to each second region 12 are different.
  • the common voltage chip G11 corresponds to the second region d
  • the common voltage chip G12 corresponds to the second region e
  • the common voltage chip G13 corresponds to the second region f
  • the common voltage chip G11, the common voltage chip G12 and the common voltage chip G13 are provided to respective corresponding The second common voltages of the second regions 12 are all different.
  • the pixels located in different second regions 12 of the display panel 10 can achieve uniform charging by setting different second common voltages, thereby achieving uniform brightness.
  • the display effect of each region of the display panel 10 can be in an optimal state.
  • FIG. 3 shows a schematic structural diagram of a control circuit board 21 .
  • control circuit board 21 further includes: a timing controller (timing controller, TCON) 211 , and the TCON 211 is connected to the gamma chip 212 and each common voltage chip 213 respectively.
  • TCON timing controller
  • the TCON211 is used to provide the first preset data corresponding to the row driving position to the gamma chip 212 according to the row driving position, and the gamma chip 212 is used to convert the first preset data to the gamma chip 212. Data is converted to a first common voltage.
  • different first preset data correspond to different first common voltages.
  • the row driving position refers to a row position at which a scan driving signal is provided to the display panel 10 when the scan driving circuit drives the display panel 10 and scans row by row.
  • the TCON211 may transmit the first preset data to the gamma chip 212 through the transmission interface I2C protocol.
  • the first area 11 on the display panel 10 may include multiple rows of pixels, when driving to the row range where the first area 11 is located, different row driving positions may correspond to the same first preset data.
  • the first area 11 corresponds to a first preset data; different row driving positions may also correspond to different first preset data, at this time, it is equivalent to each row of pixels in the first area 11 corresponding to a first preset data, different The first preset data corresponds to different first common voltages.
  • the row range corresponding to the first area 11 is the first row to the third row, and when the row driving position is set to the first row, the first preset data is S1, and the first common voltage corresponding to S1 is VS1, then the gamma
  • the horse chip 212 converts S1 into the first common voltage VS1 and provides it to the first area 11; when the row driving position is the second row, the first preset data is S2, and the first common voltage corresponding to S2 is VS2, then Gamma
  • the horse chip 212 converts S2 into the first common voltage VS2, and provides it to the first region 11; when the row driving position is the third row, the first preset data is S3, and the first common voltage corresponding to S3 is VS3, then gamma
  • the horse chip 212 converts S3 into a first common voltage VS3 and provides it to the first region 11 . Therefore, based on different first preset data corresponding to different row driving positions, when driving to different rows within the range of the first region 11, the first common voltage
  • TCON211 is also used to provide the second preset data corresponding to the row driving position to the common voltage chip 213 corresponding to the target second area 12 according to the row driving position, which is consistent with the target
  • the common voltage chip 213 corresponding to the second region 12 is used to convert the second preset data into a second common voltage, and different second preset data corresponds to different second common voltages.
  • the TCON211 may transmit the second preset data to each common voltage chip 213 through the transmission interface I2C protocol.
  • the second area 12 on the display panel 10 may include multiple rows of pixels, when driving to the row range where one or more second areas 12 are located, the one or more second areas 12 are the target first Second area.
  • different row driving positions can correspond to the same second preset data, at this time, the corresponding target second area corresponds to a second preset data; different row driving positions can also be Corresponding to different second preset data, at this time, each row of pixels in the target second area corresponds to a second preset data, and different second preset data corresponds to different second common voltages.
  • the row range corresponding to the target second area is the 4th row to the 6th row
  • the second preset data is S4
  • the second common voltage corresponding to S4 is VS4
  • the common voltage chip converts S4 into the second common voltage VS4, and provides it to the target second area
  • the row driving position is the fifth row
  • the second preset data is S5
  • the second common voltage corresponding to S5 is VS5, then the common voltage
  • the chip 213 converts S5 into the second common voltage VS5, and provides it to the target second area
  • the second preset data is S6, and the second common voltage corresponding to S6 is VS6, then the common voltage
  • the chip 213 converts S6 into a second common voltage VS6 and provides it to the target second area.
  • each set of second preset data includes different second preset data corresponding to different row driving positions.
  • Multiple target second areas can achieve the same display effect.
  • each set of second preset data includes different second preset data corresponding to different row driving positions.
  • TCON211 is also used to determine a corresponding group of second preset data according to the target second area, and then determine a corresponding second preset data from the group of second preset data according to the row driving position .
  • different row driving positions correspond to different second preset data.
  • the second common voltage provided to the target second area can be continuously adjusted according to the second preset data, so that each area of the display panel 10 can be adjusted when scanning and driving each row. To the best state, so as to achieve the purpose of no flicker.
  • Fig. 4 shows a schematic structural diagram of another control circuit board.
  • TCON211 includes: row counter 2111, control unit 2113 and memory 2112, control unit 2113 and row counter 2111, memory 2112, gamma chip 212, each common voltage chip 213 are connected.
  • the row counter 2111 is used to detect the row driving position.
  • the row counter 2111 can detect the row driving position corresponding to the data in the subsequent scan driving according to the data.
  • the memory 2112 is used to store the first data group 31 and a plurality of second data groups 32, the first data group 31 includes a plurality of first preset data, and each second data group 32 includes a plurality of For the second preset data, different sets of second data sets 32 correspond to different common voltage chips 213 .
  • the control unit 2113 is used to obtain the row driving position from the row counter 2111, and obtain the first preset data corresponding to the row driving position from the memory 2112 according to the row driving position, and/or, the row driving positions in the plurality of second data groups 32 Corresponding second preset data.
  • the control unit 2113 is further configured to provide the first preset data to the gamma chip 212 , and provide the second preset data corresponding to the row driving positions in the plurality of second data groups 32 to the corresponding common voltage chips 213 .
  • the gamma chip 212 includes a first data-to-analog converter, and the first data-to-analog converter is used to convert the first preset data into a first common voltage.
  • the common voltage chip 213 includes a second data-to-analog converter for converting second preset data into a second common voltage.
  • each second data group 32 includes a plurality of identical second preset data, which means that one target second area only corresponds to one second preset data.
  • the control unit 2113 does not acquire the second preset data corresponding to the row driving position from the second data group 32 corresponding to the target second area according to the row driving position , that is to say, the target second area has no corresponding second preset data.
  • control unit 2113 is configured to interpolate and determine the second preset corresponding to the target second area according to the second preset data respectively corresponding to a plurality of second preset data having the closest distance to the target second area. data.
  • the display panel 10 includes a first area 11 and eight second areas 12 surrounding the first area 11 .
  • the second data group 32 may include a plurality of identical second preset data in the first row and third column. The second preset data corresponding to the area 12, and the second preset data corresponding to the second area 12 in the third row and third column, interpolation calculation to obtain the second preset of the target second area in the second row and third column data.
  • control unit 2113 is further configured to use the second preset data corresponding to a second area 12 that is closest to the target second area and has second preset data, and the target second area corresponds to The second preset data corresponding to the plurality of second areas 12 located between the second area 12 and the target second area are determined in proportion.
  • the second area 12 corresponding to the 90th column of the third row with the closest distance and the second preset data can be and the second preset data corresponding to the second area 12 in the third row and the 110th column are interpolated to obtain the second preset data of the target second area in the third row and the 100th column.
  • the second preset data when storing the second preset data, a small amount of data can be stored, and the second preset data of all regions can be obtained later by an interpolation algorithm, which can not only reduce the storage space, but also meet the requirement of uniform brightness. At the same time, the algorithm is relatively simple and will not affect the processing speed.
  • the embodiment of the present application also provides a method for obtaining a common voltage, which is applied to the display device 1 shown in the embodiment of the present application.
  • Fig. 6 shows a schematic flowchart of a method for obtaining a common voltage provided by an embodiment of the present application. As shown in Fig. 6, the embodiment of the present application includes:
  • the image capture device uses the image capture device to acquire the luminance value corresponding to each region in the display panel 10, and acquire the common voltage corresponding to each luminance value, and establish a first correspondence between multiple luminance values and multiple common voltages, the common voltage It includes a first common voltage and a second common voltage.
  • the above S100 can be expressed as: use the image capture device to capture one or more areas of the display panel 10, the areas include the first area 11 and the second area 12, and obtain each area in the display panel 10 from the captured image The corresponding brightness value.
  • the magnitude of the common voltage applied to each area is the common voltage corresponding to each brightness value.
  • a first corresponding relationship between the plurality of brightness values and the plurality of first common voltages may be established.
  • the first correspondence between the plurality of brightness values and the plurality of second common voltages can be established relation.
  • the image capturing device is, for example, a charge coupled device (charge coupled device, CCD) camera.
  • CCD charge coupled device
  • the common voltage of the same magnitude may be provided to the first region 11 and the second region 12 in advance, thus, due to the non-uniform brightness phenomenon, the determined brightness value corresponding to each region in the display panel 10 will be different.
  • the flicker value refers to the difference between two adjacent brightness values obtained for a certain area.
  • the difference between two adjacent brightness values obtained is one flicker value.
  • m-1 flicker values can be determined.
  • the multiple flicker values and the multiple flicker values can be determined. The third corresponding relationship of the first common voltage.
  • the difference between two adjacent brightness values obtained is one flicker value.
  • n-1 flicker values can be determined.
  • the multiple flicker values and the multiple flicker values can be determined. The third corresponding relationship of the second common voltage.
  • the first common voltage corresponding to the minimum flicker value can be stored as the optimal value of the first common voltage corresponding to the first region 11 .
  • the minimum flicker value can be determined by searching in the third correspondence according to the minimum flicker value. Therefore, the second common voltage corresponding to the minimum flicker value can be stored as the optimal value of the second common voltage corresponding to the second region 12 .
  • the optimal value of the common voltage corresponding to each region in the display panel 10 can be determined, and then all the optimal values of the common voltage are burned into the memory 2112 in the control unit 2113 .
  • the optimal value of the common voltage is programmed in the memory 2112, it can be restarted to confirm whether the optimal value of the common voltage obtained by each area is correct. If it is correct, the process ends. If not, can be readjusted.
  • the embodiment of the present application provides a method for acquiring a common voltage.
  • a capture device to acquire multiple luminance values corresponding to each region in the display panel 10, and acquiring the common voltage corresponding to each luminance value.
  • a The first corresponding relationship between the multiple brightness values and the multiple common voltages are determined, thus, the second corresponding relationship between the multiple brightness values and the multiple flicker values can be established.
  • a third correspondence relationship between the multiple common voltages and the multiple flicker values can be determined.
  • the common voltage corresponding to the minimum flicker value is further determined from the third correspondence, which is the optimal value of the common voltage corresponding to each area.
  • the embodiment of the present application also provides a display control method, including:
  • the common voltage corresponding to each region of the display panel 10 is adjusted according to the optimal value of the common voltage of each region obtained by the method for obtaining the common voltage as described above.
  • the embodiment of the present application provides a display control method.
  • the common voltage corresponding to each area of the display panel is adjusted, and the common voltage corresponding to each area is the optimal value. value, the corresponding minimum degree of flicker, thereby reducing the flicker phenomenon of the entire display panel, or the flicker of the entire display panel will disappear.
  • An embodiment of the present application further provides a display control device, configured to execute the processing steps in the above-mentioned method for obtaining a common voltage.
  • the beneficial effect of the display control device provided by the embodiment of the present application is the same as the corresponding beneficial effect of the method for obtaining the common voltage, and will not be repeated here.
  • An embodiment of the present application further provides a display control device, configured to execute the display control method described above.
  • the beneficial effect of the display control device provided by the embodiment of the present application is the same as the corresponding beneficial effect of the above display control method, and will not be repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium, where computer programs or instructions are stored in the computer-readable storage medium, and when the computer reads and executes the computer programs or instructions, the computer executes the above-mentioned common voltage acquisition method and/or or display control methods.

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Abstract

一种显示装置(1)、公共电压的获取方法及显示控制方法,属于显示技术领域,显示装置(1)包括:显示面板(10)和控制电路板(21),显示面板(10)包括一个第一区域(11)和至少一个第二区域(12),控制电路板(21)包括伽马芯片(212)和至少一个公共电压芯片(213);伽马芯片(212)用于为第一区域(11)提供第一公共电压,至少一个公共电压芯片(213)用于为至少一个第二区域(12)提供第二公共电压;其中,第一公共电压与第二公共电压的大小不同。本显示装置解决了显示面板中出现亮度不均一现象的问题,可以通过提供不同的公共电压将面板各个区域都调至最佳,全屏显示均匀。

Description

显示装置、公共电压的获取方法及显示控制方法
本申请要求于2021年08月04日在中华人民共和国国家知识产权局专利局提交的、申请号为202110889104.2、申请名称为“显示装置、公共电压最优值的获取方法及显示控制方法”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
本申请属于显示技术领域,尤其涉及一种显示装置、公共电压的获取方法及显示控制方法。
背景技术
随着显示技术的不断发展,各种类型的显示设备层出不穷,并在各个领域得到广泛应用。但是,随着显示面板越来越往大尺寸和高解析度方向发展,显示面板中像素对应的充电时间越来越短,又因为像素的位置与充电次序有关,导致随着显示面板尺寸越大,位于显示面板不同位置的像素充电差异也越大。
相关技术中,将显示面板划分为3×3排布的9个区域,由于人眼观看时的视线会集中在显示面板的中心区域,即第二行第二列的区域,所以,在调试显示面板时,会根据人眼的观看习惯,将中心区域的亮度和色度等参数调整至最佳状态,但是周边的8个区域由于充电差异,并非处于最佳状态。这样,就会造成除了中心区域的8个区域出现闪烁(flicker)现象,或者,出现亮度不均一现象。
技术问题
本申请实施例提供了一种显示装置、公共电压的获取方法及显示控制方法,解决了显示面板中出现闪烁现象或出现亮度不均一现象的问题,提高了显示效果。
技术解决方案
第一方面,提供了一种显示装置,所述显示装置包括:显示面板和控制电路板,所述显示面板包括一个第一区域和至少一个第二区域,所述控制电路板包括伽马芯片和至少一个公共电压芯片,所述伽马芯片用于为所述第一区域提供第一公共电压,所述至少一个公共电压芯片用于为所述至少一个第二区域提供第二公共电压;其中,所述第一公共电压与所述第二公共电压的大小不同。
其中,公共电压芯片的数量少于或等于第二区域的数量。
第一方面提供的显示装置,通过将显示面板划分为一个第一区域和至少一个第二区域,在控制线路板中设置伽马芯片和至少一个公共电压芯片,并通过伽马芯片为第一区域提供第一公共电压,公共电压芯片为第二区域提供第二公共电压,由于第一公共电压和第二公共电压的大小不同,所以位于第一区域的像素和位于第二区域的像素充电不同,由此,通过分区域提供不同的公共电压,可以实现显示面板的充电均匀化,亮度均匀化。
在第一方面一种可能的实现方式中,当所述显示面板包括多个第二区域时,所述第一区域位于所述显示面板的中心,所述多个第二区域位于所述第一区域的两侧或四周。
在该实现方式中,通过提供不同的第一公共电压和第二公共电压,使得位于两侧第二区域的像素与位于中心的第一区域的像素充电达到均匀化,亮度达到均匀化。
在第一方面一种可能的实现方式中,所述至少一个公共电压芯片与所述至少一个第二区域具有一对多或者一对一的对应关系,每个所述第二区域对应一个所述公共电压芯片,不同公共电压芯片用于提供不同大小的第二公共电压。
在该实现方式中,位于显示面板中不同第二区域中的像素可以通过设定不同的第二公共电压达到充电均匀化,从而亮度也达到均匀化。通过对每个区域的公共电压的精细控制,可以使得显示面板各个区域的显示效果都处于最佳状态。
在第一方面一种可能的实现方式中,所述控制电路板还包括:时序控制器,所述时序控制器与所述伽马芯片、每个公共电压芯片分别相连接;当行驱动位置属于第一区域的范围内时,所述时序控制器用于根据所述行驱动位置,向所述伽马芯片提供与所述行驱动位置对应的第一预设数据,所述伽马芯片用于将所述第一预设数据转换为所述第一公共电压,不同第一预设数据对应不同第一公共电压;当所述行驱动位置属于目标第二区域的范围内时,所述时序控制器还用于根据所述行驱动位置,向所述目标第二区域对应的公共电压芯片提供与所述行驱动位置对应的第二预设数据,与所述目标第二区域对应的公共电压芯片用于将所述第二预设数据转换为所述第二公共电压,不同第二预设数据对应不同第二公共电压。
行驱动位置指的是扫描驱动电路驱动显示面板时,逐行扫描时,向显示面板提供扫描驱动信号的行位置。
在该实现方式中,基于不同行驱动位置对应不同第一预设数据,当驱动至第一区域范围内的不同行时,可以不断根据第一预设数据调整提供至第一区域的第一公共电压。基于不同行驱动位置对应不同第二预设数据。当驱动至目标第二区域范围内的不同行时,可以不断根据第二预设数据调整提供至目标第二区域的第二公共电压,从而可以使得显示面板各个区域每行扫描驱动时都调至最佳状态,进而实现无闪烁的目的。
在第一方面一种可能的实现方式中,所述时序控制器包括:行计数器、控制单元和存储器,所述控制单元与所述行计数器、所述存储器、所述伽马芯片、以及每个所述公共电压芯片均连接;所述行计数器用于侦测所述行驱动位置;所述存储器用于存储第一数据组和多个第二数据组,所述第一数据组包括多个第一预设数据,每个第二数据组包括多个第二预设数据,不同组第二数据组对应不同公共电压芯片;所述控制单元用于从所述行计数器中获取所述行驱动位置,并根据所述行驱动位置从所述存储器中获取到所述行驱动位置对应的第一预设数据,和/或,所述多个第二数据组中所述行驱动位置对应的第二预设数据;所述控制单元还用于将所述第一预设数据提供给所述伽马芯片,并将所述多个第二数据组中所述行驱动位置对应的第二预设数据分别提供给对应的公共电压芯片。
在第一方面一种可能的实现方式中,所述伽马芯片包括第一数据模拟转换器,所述第一数据模拟转换器用于将所述第一预设数据转换为第一公共电压;所述公共电压芯片包括第二数据模拟转换器,所述第二数据模拟转换器用于将所述第二预设数据转换为第二公共电压。
在第一方面一种可能的实现方式中,每个第二数据组包括多个相同的第二预设数据,则当所述行驱动位置属于目标第二区域的范围内,所述控制单元根据所述行驱动位置,未从所述目标第二区域对应的所述第二数据组中,获取到所述行驱动位置对应的第二预设数据时,所述控制单元用于:根据与所述目标第二区域距离最近且具有第二预设数据的多个第二区域分别对应的第二预设数据,插值确定出所述目标第二区域对应的第二预设数据。
在该实现方式中,在存储第二预设数据时,可以存储少量的数据,后期通过插值算法得到所有区域的第二预设数据,既能减少存储空间,又能满足亮度均一化的需求。同时,算法也比较简单,不会影响处理速度。
在第一方面一种可能的实现方式中,所述控制单元还用于:根据与所述目标第二区域距离最近且具有第二预设数据的一个第二区域对应的第二预设数据,以及所述目标第二区域对应的第二预设数据,按比例确定出位于所述第二区域与所述目标第二区域之间的多个第二区域分别对应的第二预设数据。在该方式中,可以以最少的数据计算出所有的第二区域对应的第二预设数据,有利于降低存储空间。
在第一方面一种可能的实现方式中,所述公共电压芯片的数量少于或等于所述第二区域的数量。
在第一方面一种可能的实现方式中,所述显示装置还包括:与所述显示面板和所述控制电路板均连接的第一电路板;所述第一电路板用于接收所述第一公共电压和所述第二公共电压,并将所述第一公共电压和所述第二公共电压提供给所述显示面板。
在第一方面一种可能的实现方式中,所述第一电路板包括数据驱动电路,所述第一电路板用于接收数据信号,并产生驱动所述显示面板显示的灰阶电压信号。
在第一方面一种可能的实现方式中,所述显示装置还包括:与所述显示面板连接的第二电路板;所述第二电路板包括栅极驱动电路,所述栅极驱动电路用于产生驱动所述显示面板显示的扫描驱动信号。
在第一方面一种可能的实现方式中,所述时序控制器用于通过传输接口I2C协议将所述第一预设数据传输给所述伽马芯片。
第二方面,提供一种公共电压的获取方法,应用于第一方面或第一方面的任意可能的实现方式中的显示装置,该方法包括:利用捕捉图像设备,获取所述显示面板中每个区域对应的多个亮度值,以及获取每个亮度值对应的公共电压,并建立所述多个亮度值与多个所述公共电压的第一对应关系;所述公共电压包括第一公共电压和第二公共电压;根据每个区域对应的多个亮度值,确定对应的多个闪烁值,并建立所述多个亮度值与所述多个闪烁值的第二对应关系;根据所述第一对应关系和所述第二对应关系,确定所述公共电压与所述多个闪烁值的第三对应关系;确定每个区域对应的多个闪烁值中的最小闪烁值;根据每个区域对应的所述最小闪烁值和所述第三对应关系,确定每个区域的所述最小闪烁值对应的公共电压为公共电压最优值并进行存储。
本申请实施例提供了一种通过公共电压的获取方法,利用捕捉设备获取显示面板中每个区域对应的多个亮度值,并获取每个亮度值对应的公共电压,由此,可以建立起多个亮度值与多个公共电压的第一对应关系。然后,根据每个区域对应的多个亮度值,确定对应的多个闪烁值,由此,可以建立起多个亮度值与多个闪烁值的第二对应关系。根据第一对应关系和第二对应关系,就可以确定出多个公共电压与多个闪烁值之间的第三对应关系。再通过确定每个区域对应的最小闪烁值,进一步从第三对应关系中确定出最小闪烁值对应的公共电压,即为每个区域对应的公共电压最优值。
第三方面,提供一种显示控制方法,根据如第二方面所述的方法得到的公共电压最优值,对显示面板的每个区域对应的公共电压进行调整。
本申请实施例提供了一种显示控制方法,通过获取每个区域的公共电压最优值,对显示面板的每个区域对应的公共电压进行调整,这个每个区域对应的公共电压即为最优值,相应的闪烁程度最低,从而降低整个显示面板的闪烁现象,或者,整个显示面板的闪烁将消失。
第四方面,提供一种显示控制装置,用于执行如以上第一方面所述的公共电压的获取方法中的处理步骤,和/或,执行如以上第二方面所述的显示控制方法。
第五方面,提供一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机程序或指令,当计算机读取并执行所述计算机程序或指令时,使得计算机执行如以上第一方面所述的公共电压的获取方法中的处理步骤,和/或,执行如以上第二方面所述的显示控制方法。
第四方面和第五方面的有益效果可参考上述第一方面和/或第二方面的有益效果,在此不再赘述。
有益效果
本申请实施例提供的显示装置、公共电压的获取方法及显示控制方法,通过将显示面板划分为一个第一区域和至少一个第二区域,在控制线路板中设置伽马芯片和至少一个公共电压芯片,并通过伽马芯片为第一区域提供第一公共电压,公共电压芯片为第二区域提供第二公共电压,由于第一公共电压和第二公共电压的大小不同,所以位于第一区域的像素和位于第二区域的像素充电不同,由此,通过分区域提供不同的公共电压,可以实现显示面板的充电均匀化,亮度均匀化。
附图说明
为了更清楚地说明本申请实施例技术方案,下面将对实施例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他的附图。
图1是本申请实施例提供的一种显示装置的结构示意图;
图2是本申请实施例提供的另一种显示装置的结构示意图;
图3是本申请实施例提供的一种控制电路板的结构示意图;
图4是本申请实施例提供的另一种控制电路板的结构示意图;
图5是本申请实施例提供的存储器的示意图;
图6是本申请实施例提供的公共电压的获取方法的流程示意图。
附图标记:
1-显示装置;10-显示面板;11-第一区域;12-第二区域;21-控制电路板;211-时序控制器(TCON);2111-行计数器;2112-存储器;2113-控制单元;212-伽马芯片;213-公共电压芯片;22-第一电路板;23-第二电路板;31-第一数据组;32-第二数据组。
本申请目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
本发明的实施方式
应当理解,此处所描述的具体实施例仅仅用以解释本申请,并不用于限定本申请。
图1和图2均为本申请实施例提供的一种显示装置的结构示意图。如图1和图2所示,该显示装置1包括:显示面板10和控制电路板21。
显示面板10包括一个第一区域11和至少一个第二区域12,控制电路板21包括伽马芯片212和至少一个公共电压芯片213。公共电压芯片213的数量少于或等于第二区域12的数量。
伽马芯片212用于为第一区域11提供第一公共电压,1个或多个公共电压芯片213用于为1个或多个第二区域12提供第二公共电压。
其中,第一公共电压与第二公共电压的大小不同。
应理解,伽马芯片212还用于产生伽马电压。
应理解,显示装置1还包括与显示面板10和控制电路板21均连接的第一电路板22,第一电路板22包括数据驱动电路。第一电路板22接收数据信号,并产生驱动显示面板10显示的灰阶电压信号。该第一电路板22还用于接收第一公共电压和第二公共电压,并将第一公共电压和第二公共电压提供给显示面板10。
应理解,显示装置1还包括与显示面板10连接的第二电路板23,第二电路板23包括栅极驱动电路,该栅极驱动电路用于产生驱动显示面板10显示的扫描驱动信号,该扫描驱动信号可以驱动显示面板10进行逐行扫描显示。
图1和图2中所示的第一电路板22和第二电路板23的个数仅是示例,本申请实施例对此没有任何限制。例如,第一电路板22还可以设置四个等。另外,如果采用栅集成阵列(gate on array,GOA)代替栅极驱动电路,则还可以不设置第二电路板23。
第二区域12的数量可以为一个,也可以为多个,第一区域11和第二区域12的尺寸、形状、在显示面板10中的位置均可以根据需要进行设置和更改,本申请实施例对此不进行任何限制。
应理解,控制电路板21中所包含的公共电压芯片213数量可以为一个,也可以为多个,本申请实施例对此不进行任何限制。
需要说明的是,当公共电压芯片213数量少于第二区域12的数量时,每个公共电压芯片213可以对应1个或多个第二区域12,每个公共电压芯片213用于为该对应的1个或多个第二区域12提供第二公共电压。当公共电压芯片213数量等于第二区域12的数量时,每个公共电压对应1个第二区域,每个公共电压芯片213用于对该对应的1个第二区域12提供第二公共电压。
基于此,由于伽马芯片212为第一区域11提供的第一公共电压与数个公共电压芯片213为数个第二区域12提供的第二公共电压的大小不同,使得位于第一区域11的像素的充电与位于第二区域12中的像素的充电不同,进而使得第一区域11对应的亮度与第二区域12对应的亮度不同,由此,通过设定不同的第一公共电压和第二公共电压,可以使得显示面板10位于不同区域的像素逐渐充电均匀化,进而亮度均匀化。
本申请实施例提供了一种显示装置,通过将显示面板划分为一个第一区域和至少一个第二区域,在控制线路板中设置伽马芯片和至少一个公共电压芯片,并通过伽马芯片为第一区域提供第一公共电压,公共电压芯片为第二区域提供第二公共电压,由于第一公共电压和第二公共电压的大小不同,所以位于第一区域的像素和位于第二区域的像素充电不同,由此,通过分区域提供不同的公共电压,可以实现显示面板的充电均匀化,亮度均匀化。
在一种可能实现的方式中,当显示面板10包括多个第二区域12时,第一区域11位于显示面板10的中心,多个第二区域12位于第一区域11的两侧或四周。
示例性的,如图1所示,当显示面板10包括2个第二区域12时,沿x方向,该2个第二区域12位于第一区域11的两侧,第一区域11位于显示面板10的中心。由此,可以通过伽马芯片212向位于中心的第一区域11提供第一公共电压,通过1个或2个公共电压芯片213为两侧的两个第二区域12提供第二公共电压。通过提供不同的第一公共电压和第二公共电压,使得位于两侧第二区域12的像素与位于中心的第一区域11的像素充电达到均匀化,亮度达到均匀化。
示例性的,如图2所示,当显示面板10包括8个第二区域12时,该8个第二区域12位于第一区域11的四周,也就是说,该8个第二区域12环绕第一区域11而设,第一区域11位于中心。由此,可以通过伽马芯片212向位于中心的第一区域11提供第一公共电压,通过1个或最多8个公共电压芯片213向该8个第二区域12提供第二公共电压。通过提供不同的第一公共电压和第二公共电压,使得位于四周的8个第二区域12的像素与位于中心的第一区域11的像素充电达到均匀化,亮度达到均匀化。
在一种可能实现的方式中,至少一个公共电压芯片213与至少一个第二区域12具有一对多或者一对一的对应关系,每个第二区域对应一个公共电压芯片;不同公共电压芯片213提供不同大小的第二公共电压。
示例性的,当公共电压芯片213数量少于第二区域12的数量时,每个公共电压芯片213可以对应1个或多个第二区域12,每个公共电压芯片213用于为该对应的1个或多个第二区域12提供第二公共电压。基于此,不同公共电压芯片213对应的1个或多个第二区域12之间对应的第二公共电压不同。例如,公共电压芯片G1对应第二区域a和第二区域b,公共电压芯片G2对应第二区域c,公共电压芯片G1提供给第二区域a和第二区域b的第二公共电压,与公共电压芯片G2提供给第二区域c的第二公共电压不同。
当公共电压芯片213数量等于第二区域12的数量时,每个公共电压对应1个第二区域12,每个公共电压芯片213用于对该对应的1个第二区域12提供第二公共电压。每个第二区域12对应的第二公共电压均不同。例如,公共电压芯片G11对应第二区域d,公共电压芯片G12对应第二区域e,公共电压芯片G13对应第二区域f,公共电压芯片G11、公共电压芯片G12和公共电压芯片G13提供给各自对应的第二区域12的第二公共电压均不同。
基于上述,可以理解的是,位于显示面板10中不同第二区域12中的像素可以通过设定不同的第二公共电压达到充电均匀化,从而亮度也达到均匀化。通过对每个区域的公共电压的精细控制,可以使得显示面板10各个区域的显示效果都处于最佳状态。
图3示出了一种控制电路板21的结构示意图。
在一种可能实现的方式中,如图3所示,控制电路板21还包括:时序控制器(timing controller,TCON)211,TCON211与伽马芯片212、每个公共电压芯片213分别相连接。
当行驱动位置属于第一区域11的范围内时,TCON211用于根据行驱动位置,向伽马芯片212提供与行驱动位置对应的第一预设数据,伽马芯片212用于将第一预设数据转换为第一公共电压。
其中,不同第一预设数据对应不同第一公共电压。
应理解,行驱动位置指的是扫描驱动电路驱动显示面板10时,逐行扫描时,向显示面板10提供扫描驱动信号的行位置。
应理解,TCON211可以将第一预设数据通过传输接口I2C协议传输给伽马芯片212。
由于显示面板10上的第一区域11可能包括多行像素,因此,当驱动至第一区域11所在的行范围内时,不同行驱动位置可以对应相同的第一预设数据,此时,相当于第一区域11对应一个第一预设数据;不同行驱动位置也可以对应不同第一预设数据,此时,相当于第一区域11中的每行像素对应一个第一预设数据,不同第一预设数据对应不同第一公共电压。
例如,第一区域11对应的行范围为第1行至第3行,设定行驱动位置为第1行时,第一预设数据为S1,S1对应的第一公共电压为VS1,则伽马芯片212将S1转换为第一公共电压VS1,并提供给第一区域11;行驱动位置为第2行时,第一预设数据为S2,S2对应的第一公共电压为VS2,则伽马芯片212将S2转换为第一公共电压VS2,并提供给第一区域11;行驱动位置为第3行时,第一预设数据为S3,S3对应的第一公共电压为VS3,则伽马芯片212将S3转换为第一公共电压VS3,并提供给第一区域11。由此,基于不同行驱动位置对应不同第一预设数据,当驱动至第一区域11范围内的不同行时,可以不断根据第一预设数据调整提供至第一区域11的第一公共电压。
当行驱动位置属于目标第二区域12的范围内时,TCON211还用于根据行驱动位置,向目标第二区域12对应的公共电压芯片213提供与行驱动位置对应的第二预设数据,与目标第二区域12对应的公共电压芯片213用于将第二预设数据转换为第二公共电压,不同第二预设数据对应不同第二公共电压。
应理解,TCON211可以将第二预设数据通过传输接口I2C协议传输给每个公共电压芯片213。
由于显示面板10上的第二区域12可能包括多行像素,因此,当驱动至某一个或多个第二区域12所在的行范围内时,该1个或多个第二区域12为目标第二区域。当在目标第二区域所在的行范围内驱动时,不同行驱动位置可以对应相同的第二预设数据,此时,相当目标第二区域对应一个第二预设数据;不同行驱动位置也可以对应不同第二预设数据,此时,相当于目标第二区域中的每行像素对应一个第二预设数据,不同第二预设数据对应不同第二公共电压。
例如,目标第二区域对应的行范围为第4行至第6行,设定行驱动位置为第4行时,第二预设数据为S4,S4对应的第二公共电压为VS4,则公共电压芯片将S4转换为第二公共电压VS4,并提供给目标第二区域;行驱动位置为第5行时,第二预设数据为S5,S5对应的第二公共电压为VS5,则公共电压芯片213将S5转换为第二公共电压VS5,并提供给目标第二区域;行驱动位置为第6行时,第二预设数据为S6,S6对应的第二公共电压为VS6,则公共电压芯片213将S6转换为第二公共电压VS6,并提供给目标第二区域。
此处,对应相同行范围的多个目标第二区域,可以设定相同的多组第二预设数据,每组第二预设数据包括不同行驱动位置对应的不同第二预设数据,该多个目标第二区域可以达到相同的显示效果。
对应相同行范围的多个第二区域12,也可以设定不同的多组第二预设数据,每组第二预设数据包括不同行驱动位置对应的不同第二预设数据。此时,TCON211还用于根据目标第二区域,确定对应的一组第二预设数据,然后再根据行驱动位置,从该组第二预设数据中确定出对应的一个第二预设数据。
应理解,基于不同行驱动位置对应不同第二预设数据。当驱动至目标第二区域范围内的不同行时,可以不断根据第二预设数据调整提供至目标第二区域的第二公共电压,从而可以使得显示面板10各个区域每行扫描驱动时都调至最佳状态,进而实现无闪烁的目的。
图4示出了另一种控制电路板的结构示意图。
在一种可能实现的方式中,如图4所示,TCON211包括:行计数器2111、控制单元2113和存储器2112,控制单元2113与行计数器2111、存储器2112、伽马芯片212、每个公共电压芯片213均连接。
行计数器2111用于侦测行驱动位置。
例如,当TCON211接收前端其他设备提供的数据时,行计数器2111可以根据该数据侦测出该数据对应后续扫描驱动时的行驱动位置。
如图5所示,存储器2112用于存储第一数据组31和多个第二数据组32,第一数据组31包括多个的第一预设数据,每个第二数据组32包括多个第二预设数据,不同组第二数据组32对应不同公共电压芯片213。
控制单元2113用于从行计数器2111中获取行驱动位置,并根据行驱动位置从存储器2112中获取行驱动位置对应的第一预设数据,和/或,多个第二数据组32中行驱动位置对应的第二预设数据。
控制单元2113还用于将第一预设数据提供给伽马芯片212,并将多个第二数据组32中行驱动位置对应的第二预设数据分别提供给对应的公共电压芯片213。
在一种可能实现的方式中,伽马芯片212包括第一数据模拟转换器,第一数据模拟转换器用于将第一预设数据转换为第一公共电压。
公共电压芯片213包括第二数据模拟转换器,第二数据模拟转换器用于将第二预设数据转换为第二公共电压。
在一种可能实现的方式中,每个第二数据组32包括多个相同的第二预设数据,相当于一个目标第二区域仅对应一个第二预设数据。
此时,当行驱动位置属于目标第二区域的范围内,控制单元2113根据行驱动位置,未从目标第二区域对应的第二数据组32中,获取到行驱动位置对应的第二预设数据时,也就是说,该目标第二区域没有对应的第二预设数据。
那么,控制单元2113用于根据与目标第二区域距离最近且具有第二预设数据的多个第二区域分别对应的第二预设数据,插值确定出目标第二区域对应的第二预设数据。
例如,显示面板10包括一个第一区域11,以及8个环绕在第一区域11周围的第二区域12。当位于第二行第三列的目标第二区域没有对应的第二预设数据时,可以根据第二数据组32包括多个相同的第二预设数据的第一行第三列的第二区域12所对应的第二预设数据,以及第三行第三列的第二区域12对应的第二预设数据,插值计算得到第二行第三列的目标第二区域的第二预设数据。
在一种可能实现的方式中,控制单元2113还用于根据与目标第二区域距离最近且具有第二预设数据的一个第二区域12对应的第二预设数据,以及目标第二区域对应的第二预设数据,按比例确定出位于该第二区域12与目标第二区域之间的多个第二区域12分别对应的第二预设数据。
例如,当位于第三行第100列的目标第二区域没有对应的第二预设数据时,可以根据距离最近且具有第二预设数据的第三行第90列的第二区域12所对应的第二预设数据,以及第三行第110列的第二区域12所对应的第二预设数据,插值计算得到第三行第100列的目标第二区域的第二预设数据。
同时,可以根据位置关系,按比例进一步确定出第三行第91列至第三行第99列,以及第三行第101列至第三行第109列的多个第二区域12所对应的第二预设数据。
应理解,在存储第二预设数据时,可以存储少量的数据,后期通过插值算法得到所有区域的第二预设数据,既能减少存储空间,又能满足亮度均一化的需求。同时,算法也比较简单,不会影响处理速度。
本申请实施例还提供一种公共电压的获取方法,应用于本申请实施例所示的显示装置1中。图6示出了本申请实施例提供的公共电压的获取方法的流程示意图,如图6所示,本申请实施例包括:
S100、利用捕捉图像设备,获取显示面板10中每个区域对应的亮度值,以及获取每个亮度值对应的公共电压,并建立多个亮度值与多个公共电压的第一对应关系,公共电压包括第一公共电压和第二公共电压。
上述S100可以表述为:利用捕捉图像设备区拍摄显示面板10的1个或多个区域,该区域包括第一区域11和第二区域12,从拍摄的图像中,获取显示面板10中每个区域对应的亮度值。同时,获取拍摄时刻时,每个区域所施加的公共电压的大小,即为每个亮度值对应的公共电压。由此,可以建立多个亮度值与多个公共电压的第一对应关系。
例如,针对第一区域11,根据第一区域11对应的多个亮度值和每个亮度值对应的第一公共电压,可以建立多个亮度值与多个第一公共电压的第一对应关系。
例如,针对某一个第二区域12,根据第二区域12对应的多个亮度值和每个亮度值对应的第二公共电压,可以建立多个亮度值与多个第二公共电压的第一对应关系。
应理解,捕捉图像设备例如为电荷耦合器件(charge coupled device,CCD)相机。
应理解,可以预先给第一区域11和第二区域12提供相同大小的公共电压,由此,由于亮度不均一现象,确定出的显示面板10中每个区域对应的亮度值将不同。
S200、根据每个区域对应的多个亮度值,确定对应的多个闪烁值,并建立多个亮度值与多个闪烁值的第二对应关系。
闪烁值指的是针对某一个区域,相邻两次获取到的亮度值之间的差值。
S300、根据第一对应关系和第二对应关系,确定公共电压与多个闪烁值的第三对应关系。
例如,针对第一区域11,相邻两次获取到的亮度值之间的差值为一次闪烁值。由此,根据m个亮度值,可以确定出m-1个闪烁值。然后,将第一个亮度值对应的闪烁值记作0,补够m个闪烁值。从而根据多个亮度值与多个闪烁值可以建立起第二对应关系。基于此,根据多个亮度值与多个第一公共电压之间的第一对应关系,以及多个亮度值和多个闪烁值之间的第二对应关系,可以确定出多个闪烁值与多个第一公共电压的第三对应关系。
例如,针对某一个第二区域12,相邻两次获取到的亮度值之间的差值为一次闪烁值。由此,根据n个亮度值,可以确定出n-1个闪烁值。然后,将第一个亮度值对应的闪烁值记作0,补为n个闪烁值。从而根据多个亮度值与多个闪烁值可以建立起第二对应关系。基于此,根据多个亮度值与多个第二公共电压之间的第一对应关系,以及多个亮度值和多个闪烁值之间的第二对应关系,可以确定出多个闪烁值与多个第二公共电压的第三对应关系。
S400、确定每个区域对应的多个闪烁值中的最小闪烁值。
S500、根据每个区域对应的最小闪烁值和第三对应关系,确定每个区域的最小闪烁值对应的公共电压为公共电压最优值并进行存储。
例如,针对第一区域11,确定第一区域11对应的多个闪烁值中的最小值为最小闪烁值,根据最小闪烁值在第三对应关系中查找,可以确定出最小闪烁值对应的第一公共电压的大小,由此,可以将该最小闪烁值对应的第一公共电压作为第一区域11对应的第一公共电压最优值并进行存储。
例如,针对某一个第二区域12,确定该第二区域12对应的多个闪烁值中的最小值为最小闪烁值,根据最小闪烁值在第三对应关系中查找,可以确定出最小闪烁值对应的第二公共电压的大小,由此,可以将该最小闪烁值对应的第二公共电压作为第二区域12对应的第二公共电压最优值并进行存储。
基于此,可以确定出显示面板10中每个区域对应的公共电压最优值,然后,将所有公共电压最优值烧录至控制单元2113中的存储器2112中。
可选地,在存储器2112中烧录了公共电压最优值后,可以重新上电启动再次确认每个区域获取到的公共电压最优值是否正确,如果正确,则流程结束,如果不正确,则可以重新调节。
本申请实施例提供了一种公共电压的获取方法,通过利用捕捉设备获取显示面板10中每个区域对应的多个亮度值,并获取每个亮度值对应的公共电压,由此,可以建立起多个亮度值与多个公共电压的第一对应关系。然后,根据每个区域对应的多个亮度值,确定对应的多个闪烁值,由此,可以建立起多个亮度值与多个闪烁值的第二对应关系。根据第一对应关系和第二对应关系,就可以确定出多个公共电压与多个闪烁值之间的第三对应关系。再通过确定每个区域对应的最小闪烁值,进一步从第三对应关系中确定出最小闪烁值对应的公共电压,即为每个区域对应的公共电压最优值。
本申请实施例还提供一种显示控制方法,包括:
根据如上所述的公共电压的获取方法得到的每个区域的公共电压最优值,对显示面板10的每个区域对应的公共电压进行调整。
本申请实施例提供了一种显示控制方法,通过获取每个区域的公共电压最优值,对显示面板的每个区域对应的公共电压进行调整,这个每个区域对应的公共电压即为最优值,相应的闪烁程度最低,从而降低整个显示面板的闪烁现象,或者,整个显示面板的闪烁将消失。
本申请实施例还提供一种显示控制装置,用于执行上述所述的公共电压的获取方法中的处理步骤。
本申请实施例提供的显示控制装置的有益效果与上述公共电压的获取方法对应的有益效果相同,在此不再赘述。
本申请实施例还提供一种显示控制装置,用于执行上述所述的显示控制方法。
本申请实施例提供的显示控制装置的有益效果与上述显示控制方法对应的有益效果相同,在此不再赘述。
本申请实施例还提供一种计算机可读存储介质,计算机可读存储介质中存储有计算机程序或指令,当计算机读取并执行计算机程序或指令时,使得计算机执行上述公共电压的获取方法和/或显示控制方法。
本申请实施例提供的计算机可读存储介质的有益效果与上述公共电压的获取方法和/或显示控制方法对应的有益效果相同,在此不再赘述。
以上所述实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的精神范围,均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种显示装置(1),包括:显示面板(10)和控制电路板(21),其中,所述显示面板(10)包括一个第一区域(11)和至少一个第二区域(12),所述控制电路板(21)包括伽马芯片(212)和至少一个公共电压芯片(213);
    所述伽马芯片(212)用于为所述第一区域(11)提供第一公共电压,所述至少一个公共电压芯片(213)用于为所述至少一个第二区域(12)提供第二公共电压;
    其中,所述第一公共电压与所述第二公共电压的大小不同。
  2. 根据权利要求1所述的显示装置(1),其中,当所述显示面板(10)包括多个第二区域(12)时,所述第一区域(11)位于所述显示面板(10)的中心,所述多个第二区域(12)位于所述第一区域(11)的两侧或四周。
  3. 根据权利要求1或2所述的显示装置(1),其中,所述至少一个公共电压芯片(213)与所述至少一个第二区域(12)具有一对多或者一对一的对应关系,每个所述第二区域(12)对应一个所述公共电压芯片(213);不同公共电压芯片(213)用于提供不同大小的第二公共电压。
  4. 根据权利要求3所述的显示装置(1),其中,所述控制电路板(21)还包括:时序控制器(211),所述时序控制器(211)与所述伽马芯片(212)、每个公共电压芯片(213)分别相连接;
    当行驱动位置属于第一区域(11)的范围内时,所述时序控制器(211)用于根据所述行驱动位置,向所述伽马芯片(212)提供与所述行驱动位置对应的第一预设数据,所述伽马芯片(212)用于将所述第一预设数据转换为所述第一公共电压,不同第一预设数据对应不同第一公共电压;
    当所述行驱动位置属于目标第二区域的范围内时,所述时序控制器(211)还用于根据所述行驱动位置,向所述目标第二区域对应的公共电压芯片(213)提供与所述行驱动位置对应的第二预设数据,与所述目标第二区域对应的公共电压芯片(213)用于将所述第二预设数据转换为所述第二公共电压,不同第二预设数据对应不同第二公共电压。
  5. 根据权利要求4所述的显示装置1,其中,所述时序控制器(211)包括:行计数器(2111)、控制单元(2113)和存储器(2112),所述控制单元(2113)与所述行计数器(2111)、所述存储器(2112)、所述伽马芯片(212)、以及每个所述公共电压芯片(213)均连接;
    所述行计数器(2111)用于侦测所述行驱动位置;
    所述存储器(2112)用于存储第一数据组(31)和多个第二数据组(32),所述第一数据组(31)包括多个第一预设数据,每个第二数据组(32)包括多个第二预设数据,不同组第二数据组(32)对应不同公共电压芯片(213);
    所述控制单元(2113)用于从所述行计数器(2111)中获取所述行驱动位置,并根据所述行驱动位置从所述存储器2112)中获取到所述行驱动位置对应的第一预设数据,和/或,所述多个第二数据组(32)中所述行驱动位置对应的第二预设数据;
    所述控制单元(2113)还用于将所述第一预设数据提供给所述伽马芯片(212),并将所述多个第二数据组(32)中所述行驱动位置对应的第二预设数据分别提供给对应的公共电压芯片(213)。
  6. 根据权利要求5所述的显示装置(1),其中,所述伽马芯片(212)包括第一数据模拟转换器,所述第一数据模拟转换器用于将所述第一预设数据转换为第一公共电压;
    所述公共电压芯片(213)包括第二数据模拟转换器,所述第二数据模拟转换器用于将所述第二预设数据转换为第二公共电压。
  7. 根据权利要求5或6所述的显示装置1,其中,每个第二数据组(32)包括多个相同的第二预设数据,则当所述行驱动位置属于目标第二区域的范围内,所述控制单元(2113)根据所述行驱动位置,未从所述目标第二区域对应的所述第二数据组(32)中,获取到所述行驱动位置对应的第二预设数据时,所述控制单元(2113)用于:根据与所述目标第二区域距离最近且具有第二预设数据的多个第二区域(12)分别对应的第二预设数据,插值确定出所述目标第二区域对应的第二预设数据。
  8. 根据权利要求7所述的显示装置(1),其中,所述控制单元(2113)还用于:
    根据与所述目标第二区域距离最近且具有第二预设数据的一个第二区域(12)对应的第二预设数据,以及所述目标第二区域对应的第二预设数据,按比例确定出位于所述第二区域(12)与所述目标第二区域之间的多个第二区域(12)分别对应的第二预设数据。
  9. 根据权利要求1所述的显示装置(1),其中,所述公共电压芯片(213)的数量少于或等于所述第二区域(12)的数量。
  10. 根据权利要求1所述的显示装置(1),其中,所述显示装置(1)还包括:与所述显示面板(10)和所述控制电路板(21)均连接的第一电路板(22);
    所述第一电路板(22)用于接收所述第一公共电压和所述第二公共电压,并将所述第一公共电压和所述第二公共电压提供给所述显示面板(10)。
  11. 根据权利要求10所述的显示装置(1),其中,所述第一电路板(22)包括数据驱动电路,所述第一电路板(22)用于接收数据信号,并产生驱动所述显示面板10显示的灰阶电压信号。
  12. 根据权利要求1所述的显示装置(1),其中,所述显示装置(1)还包括:与所述显示面板(10)连接的第二电路板(23);
    所述第二电路板(23)包括栅极驱动电路,所述栅极驱动电路用于产生驱动所述显示面板(10)显示的扫描驱动信号。
  13. 根据权利要求4所述的显示装置(1),其中,所述时序控制器(211)用于通过传输接口I2C协议将所述第一预设数据提供给所述伽马芯片(212)。
  14. 一种公共电压的获取方法,应用于如权利要求1所述的显示装置(1)中,其中,所述方法包括:
    利用捕捉图像设备,获取所述显示面板(10)中每个区域对应的多个亮度值,以及获取每个亮度值对应的公共电压,并建立所述多个亮度值与多个所述公共电压的第一对应关系;所述公共电压包括第一公共电压和第二公共电压;
    根据每个区域对应的多个亮度值,确定对应的多个闪烁值,并建立所述多个亮度值与所述多个闪烁值的第二对应关系;
    根据所述第一对应关系和所述第二对应关系,确定所述公共电压与所述多个闪烁值的第三对应关系;
    确定每个区域对应的多个闪烁值中的最小闪烁值;
    根据每个区域对应的所述最小闪烁值和所述第三对应关系,确定每个区域的所述最小闪烁值对应的公共电压为公共电压最优值并进行存储。
  15. 一种显示控制方法,其中,包括:
    根据如权利要求14所述的方法得到的所述公共电压最优值,对显示面板(10)的每个区域对应的公共电压进行调整。
PCT/CN2021/143323 2021-08-04 2021-12-30 显示装置、公共电压的获取方法及显示控制方法 WO2023010795A1 (zh)

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