CN113327538A - Display device, method for acquiring optimal value of common voltage and display control method - Google Patents
Display device, method for acquiring optimal value of common voltage and display control method Download PDFInfo
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- CN113327538A CN113327538A CN202110889104.2A CN202110889104A CN113327538A CN 113327538 A CN113327538 A CN 113327538A CN 202110889104 A CN202110889104 A CN 202110889104A CN 113327538 A CN113327538 A CN 113327538A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The application provides a display device relates to and shows technical field, and this display device includes: the display panel comprises a first area and at least one second area, the control circuit board comprises gamma chips and at least one common voltage chip, and the number of the common voltage chips is less than or equal to that of the second areas; the gamma chips are used for providing a first common voltage for the first region, and the at least one common voltage chip is used for providing a second common voltage for the at least one second region; wherein, the first common voltage and the second common voltage have different magnitudes. The display panel solves the problem of nonuniform brightness in the display panel, can adjust each area of the panel to the best through providing different public voltages, and is uniform in full-screen display.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display device, a method for acquiring an optimal value of a public voltage and a display control method.
Background
With the continuous development of display technology, various types of display devices are developed and widely used in various fields. However, as the display panel is increasingly larger and higher in resolution, the charging time corresponding to the pixels in the display panel is shorter and shorter, and because the positions of the pixels are related to the charging sequence, the charging difference of the pixels at different positions of the display panel is larger as the size of the display panel is larger.
In the related art, the display panel is divided into 9 regions arranged in a 3 × 3 manner, and the line of sight when viewed by human eyes is concentrated in the central region of the display panel, that is, the region in the second row and the second column, so when the display panel is debugged, parameters such as luminance and chromaticity in the central region are adjusted to be in an optimal state according to the viewing habits of human eyes, but the 8 regions in the periphery are not in an optimal state due to charging differences. Thus, a flicker (flicker) phenomenon occurs in 8 regions except for the central region, or a luminance non-uniformity phenomenon occurs.
Disclosure of Invention
The embodiment of the application provides a display device, which solves the problem that the flicker phenomenon or the nonuniform brightness phenomenon occurs in a display panel and improves the display effect.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, there is provided a display device, comprising: the display panel comprises a first area and at least one second area, the control circuit board comprises a gamma chip and at least one common voltage chip, the gamma chip is used for providing a first common voltage for the first area, and the at least one common voltage chip is used for providing a second common voltage for the at least one second area; wherein the first common voltage and the second common voltage have different magnitudes.
Wherein the number of the common voltage chips is less than or equal to the number of the second regions.
In the display device provided by the first aspect, the display panel is divided into a first region and at least one second region, the gamma chip and the at least one common voltage chip are arranged in the control circuit board, the gamma chip provides the first common voltage for the first region, and the common voltage chip provides the second common voltage for the second region.
In a possible implementation manner of the first aspect, when the display panel includes a plurality of second regions, the first region is located in the center of the display panel, and the plurality of second regions are located on two sides or four sides of the first region.
In this implementation, the pixels in the second regions on both sides and the pixels in the first region in the center are charged uniformly by providing different first and second common voltages, so that the luminance is uniform.
In a possible implementation manner of the first aspect, the at least one common voltage chip and the at least one second region have a one-to-many or one-to-one correspondence relationship, each second region corresponds to one common voltage chip, and different common voltage chips are used for providing second common voltages of different sizes.
In this implementation, pixels located in different second regions of the display panel can be charged uniformly by setting different second common voltages, so that the luminance is also uniform. By finely controlling the common voltage of each region, the display effect of each region of the display panel can be made to be in an optimum state.
In a possible implementation manner of the first aspect, the control circuit board further includes: the time sequence controller is respectively connected with the gamma chip and each public voltage chip; when the row driving position belongs to the range of the first area, the time sequence controller is used for providing first preset data corresponding to the row driving position to the gamma chip according to the row driving position, the gamma chip is used for converting the first preset data into the first public voltage, and different first preset data correspond to different first public voltages; when the row driving position belongs to the range of a target second area, the time sequence controller is further configured to provide second preset data corresponding to the row driving position to a common voltage chip corresponding to the target second area according to the row driving position, the common voltage chip corresponding to the target second area is configured to convert the second preset data into a 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 scanning driving signal is supplied to the display panel when the scanning driving circuit drives the display panel and the display panel is scanned line by line.
In this implementation, the first common voltage provided to the first area may be continuously adjusted according to the first preset data when driving to different rows within the range of the first area based on different row driving positions corresponding to different first preset data. And corresponding to different second preset data based on different row driving positions. When the display panel is driven to different lines in the range of the target second area, the second common voltage provided to the target second area can be continuously adjusted according to second preset data, so that each line of each area of the display panel can be adjusted to the optimal state during scanning driving, and the purpose of no flicker is achieved.
In a possible implementation manner of the first aspect, the timing controller includes: the control unit is connected with the row counter, the memory, the gamma chip and each common voltage chip; the column counter is used for detecting the column driving position; the memory is used for storing a first data group and a plurality of second data groups, the first data group comprises a plurality of first preset data, each second data group comprises a plurality of second preset data, and different groups of second data groups correspond to different common voltage chips; the control unit is used for acquiring the row driving position from the row counter and acquiring first preset data corresponding to the row driving position and/or second preset data corresponding to the row driving position in the plurality of second data groups from the memory according to the row driving position; the control unit is further configured to provide the first preset data to the gamma chip, and provide second preset data corresponding to the row driving positions in the plurality of second data groups to corresponding common voltage chips, respectively.
In a possible implementation manner of the first aspect, the gamma chip includes a first data analog converter, and the first data analog converter is configured to convert the first preset data into a first common voltage; the common voltage chip includes a second data analog converter for converting the second preset data into a second common voltage.
In a possible implementation manner of the first aspect, each second data group includes a plurality of same second preset data, and when the row driving position belongs to a range of a target second area, and the control unit does not acquire the second preset data corresponding to the row driving position from the second data group corresponding to the target second area according to the row driving position, the control unit is configured to: and interpolating to determine second preset data corresponding to the target second area according to second preset data which are respectively corresponding to a plurality of second areas which are closest to the target second area and have second preset data.
In the implementation mode, when the second preset data is stored, a small amount of data can be stored, and the second preset data of all the areas can be obtained through an interpolation algorithm in the later period, so that the storage space can be reduced, and the requirement for brightness homogenization can be met. Meanwhile, the algorithm is simple, and the processing speed is not influenced.
In a possible implementation manner of the first aspect, the control unit is further configured to: and according to second preset data corresponding to a second area which is closest to the target second area and has second preset data and the second preset data corresponding to the target second area, determining second preset data respectively corresponding to a plurality of second areas between the second area and the target second area in proportion. In this way, the second preset data corresponding to all the second areas can be calculated with the least data, which is beneficial to reducing the storage space.
In a second aspect, a method for obtaining an optimal value of a common voltage is provided, where the method is applied to a display device in the first aspect or any possible implementation manner of the first aspect, and the method includes: acquiring a plurality of brightness values corresponding to each area in the display panel and a common voltage corresponding to each brightness value by utilizing an image capturing device, and establishing a first corresponding relation between the plurality of brightness values and the plurality of common voltages; the common voltage comprises a first common voltage and a second common voltage; determining a plurality of corresponding flicker values according to a plurality of brightness values corresponding to each region, and establishing a second corresponding relation between the plurality of brightness values and the plurality of flicker values; determining a third corresponding relation between the common voltage and the plurality of flicker values according to the first corresponding relation and the second corresponding relation; determining a minimum flicker value in a plurality of flicker values corresponding to each region; and determining the common voltage corresponding to the minimum flicker value of each region as an optimal common voltage value according to the minimum flicker value corresponding to each region and the third corresponding relation, and storing the optimal common voltage value.
The embodiment of the application provides a method for acquiring an optimal value of a common voltage, which is characterized in that a plurality of brightness values corresponding to each area in a display panel are acquired by using a capture device, and a common voltage corresponding to each brightness value is acquired, so that a first corresponding relation between the plurality of brightness values and the plurality of common voltages can be established. Then, a plurality of corresponding flicker values are determined according to a plurality of brightness values corresponding to each region, and thus, a second correspondence relationship between the plurality of brightness values and the plurality of flicker values can be established. According to the first corresponding relation and the second corresponding relation, a third corresponding relation between the plurality of common voltages and the plurality of flicker values can be determined. And further determining the public voltage corresponding to the minimum flicker value from the third corresponding relation by determining the minimum flicker value corresponding to each region, namely determining the optimal value of the public voltage corresponding to each region.
In a third aspect, a display control method is provided, wherein the common voltage corresponding to each area of the display panel is adjusted according to the optimal value of the common voltage obtained by the method of the second aspect.
The embodiment of the application provides a display control method, which is characterized in that the public voltage corresponding to each region of a display panel is adjusted by acquiring the optimal value of the public voltage of each region, the public voltage corresponding to each region is the optimal value, and the corresponding flicker degree is the lowest, so that the flicker phenomenon of the whole display panel is reduced, or the flicker of the whole display panel disappears.
In a fourth aspect, there is provided a display control apparatus for performing the processing steps in the method for obtaining an optimum value of a common voltage according to the first aspect above, and/or performing the display control method according to the second aspect above.
In a fifth aspect, there is provided a computer-readable storage medium having stored therein a computer program or instructions which, when read and executed by a computer, cause the computer to execute the processing steps in the method of acquiring an optimum value of a common voltage according to the above first aspect, and/or execute the method of display control according to the above second aspect.
Advantageous effects of the fourth aspect and the fifth aspect can refer to the advantageous effects of the first aspect and/or the second aspect, and are not described herein again.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another display device provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control circuit board according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another control circuit board provided in the embodiments 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 acquiring an optimal value of a common voltage according to an embodiment of the present application.
Reference numerals:
1-a display device; 10-a display panel; 11-a first region; 12-a second region; 21-a control circuit board; 211-TCON; 2111-line counter; 2112-a memory; 2113-control unit; 212-gamma chip; 213-common voltage chip; 22-a first circuit board; 23-a second circuit board; 31-a first data set; 32-second data set.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.
The word "comprising" or "comprises", and the like, means that the element or item preceding the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The directional terms "left", "right", "upper" and "lower" are defined relative to the orientation in which the display assembly is schematically positioned in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity relative to each other and that may vary accordingly depending on the orientation in which the display assembly is positioned.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 and fig. 2 are schematic structural diagrams of a display device according to an embodiment of the present disclosure. As shown in fig. 1 and 2, the display device 1 includes: a display panel 10 and a control circuit board 21.
The display panel 10 includes a first region 11 and at least one second region 12, and the control circuit board 21 includes a gamma chip 212 and at least one common voltage chip 213. The number of the common voltage chips 213 is less than or equal to the number of the second regions 12.
The gamma chip 212 is used to supply a first common voltage to the first region 11, and the 1 or more common voltage chips 213 are used to supply a second common voltage to the 1 or more second regions 12.
Wherein, the first common voltage and the second common voltage have different magnitudes.
It should be understood that the gamma chip 212 is also used to generate gamma voltages.
It should be understood that the display device 1 further includes a first circuit board 22 connected to both the display panel 10 and the control circuit board 21, the first circuit board 22 including a data driving circuit. The first circuit board 22 receives the data signal and generates a gray scale voltage signal for driving the display panel 10 to display. The first circuit board 22 is also configured to receive the first common voltage and the second common voltage and supply the first common voltage and the second common voltage to the display panel 10.
It should be understood that the display device 1 further includes a second circuit board 23 connected to the display panel 10, and the second circuit board 23 includes a gate driving circuit for generating a scan driving signal for driving the display panel 10 to display, and the scan driving signal can drive the display panel 10 to perform progressive scan display.
The number of the first circuit board 22 and the second circuit board 23 shown in fig. 1 and 2 is merely an example, and the embodiment of the present application is not limited thereto. For example, four first circuit boards 22 may be provided. In addition, if a Gate On Array (GOA) is used instead of the gate driving circuit, the second circuit board 23 may not be provided.
The number of the second regions 12 may be one or more, and the size, shape and position of the first region 11 and the second region 12 in the display panel 10 may be set and changed as needed, which is not limited in this embodiment of the application.
It should be understood that the number of the common voltage chips 213 included in the control circuit board 21 may be one or more, and the embodiment of the present application does not limit this.
It should be noted that, when the number of the common voltage chips 213 is less than the number of the second regions 12, each common voltage chip 213 may correspond to 1 or more second regions 12, and each common voltage chip 213 is configured to provide the second common voltage for the corresponding 1 or more second regions 12. When the number of the common voltage chips 213 is equal to the number of the second regions 12, each common voltage corresponds to 1 second region, and each common voltage chip 213 is used to supply the second common voltage to the corresponding 1 second region 12.
Based on this, since the first common voltage provided by the gamma chip 212 to the first region 11 and the second common voltage provided by the plurality of common voltage chips 213 to the plurality of second regions 12 are different in magnitude, the charging of the pixels located in the first region 11 is different from the charging of the pixels located in the second regions 12, and the luminance corresponding to the first region 11 is different from the luminance corresponding to the second regions 12, thereby setting different first and second common voltages to gradually charge and homogenize the pixels of the display panel 10 located in different regions, and further homogenize the luminance.
The embodiment of the application provides a display device, a 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 a control circuit board, the gamma chip provides a first common voltage for the first area, the common voltage chip provides a second common voltage for the second area, and pixels located in the first area and pixels located in the second area are charged differently due to the fact that the first common voltage and the second common voltage are different in size, therefore, different common voltages are provided by different areas, charging uniformity and brightness uniformity of the display panel can be achieved.
In a possible implementation manner, when the display panel 10 includes a plurality of second regions 12, the first region 11 is located in the center of the display panel 10, and the plurality of second regions 12 are located at two sides or four sides of the first region 11.
Exemplarily, as shown in fig. 1, when the display panel 10 includes 2 second regions 12, the 2 second regions 12 are located at both sides of the first region 11 along the x direction, and the first region 11 is located at the center of the display panel 10. Thus, the first common voltage may be supplied to the first region 11 located at the center through the gamma chip 212, and the second common voltage may be supplied to the two second regions 12 located at both sides through the 1 or 2 common voltage chips 213. By supplying different first and second common voltages, the pixels in the second regions 12 at both sides and the pixels in the first region 11 at the center are charged uniformly, and the brightness is uniform.
Illustratively, as shown in fig. 2, when the display panel 10 includes 8 second regions 12, the 8 second regions 12 are located at the periphery of the first region 11, that is, the 8 second regions 12 are disposed around the first region 11, and the first region 11 is located at the center. Thus, the first common voltage may be supplied to the first region 11 located at the center through the gamma chip 212, and the second common voltage may be supplied to the 8 second regions 12 through 1 or up to 8 common voltage chips 213. By providing different first common voltage and second common voltage, the pixels of the 8 second regions 12 located at the periphery and the pixels of the first region 11 located at the center are charged uniformly, and the brightness is uniform.
In a possible implementation manner, the at least one common voltage chip 213 has a one-to-many or one-to-one correspondence with at least one second area 12, each second area corresponding to one common voltage chip; the different common voltage chips 213 provide second common voltages of different magnitudes.
For example, when the number of the common voltage chips 213 is less than the number of the second regions 12, each common voltage chip 213 may correspond to 1 or more second regions 12, and each common voltage chip 213 is used to provide the second common voltage to the corresponding 1 or more second regions 12. Based on this, the corresponding second common voltages are different between 1 or more second regions 12 corresponding to different common voltage chips 213. For example, the common voltage chip G1 corresponds to the second region a and the second region b, the common voltage chip G2 corresponds to the second region c, and the second common voltage supplied from the common voltage chip G1 to the second region a and the second region b is different from the second common voltage supplied from the common voltage chip G2 to the second region c.
When the number of the common voltage chips 213 is equal to the number of the second regions 12, each common voltage corresponds to 1 second region 12, and each common voltage chip 213 is used to supply the second common voltage to the corresponding 1 second region 12. The second common voltage for each second region 12 is different. For example, 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, and the second common voltages supplied to the respective corresponding second regions 12 by the common voltage chip G11, the common voltage chip G12 and the common voltage chip G13 are all different.
Based on the above, it can be understood that the pixels located in different second regions 12 in the display panel 10 can achieve the charging uniformity by setting different second common voltages, and thus the luminance can also be uniform. By fine control of the common voltage for each region, the display effect of each region of the display panel 10 can be made to be in an optimum state.
Fig. 3 shows a schematic structural diagram of a control circuit board 21.
In a possible implementation manner, as shown in fig. 3, the control circuit board 21 further includes: a Timing Controller (TCON) 211, wherein the TCON211 is connected to the gamma chip 212 and each common voltage chip 213.
When the row driving position belongs to the range of the first region 11, the TCON211 is configured to provide the gamma chip 212 with first preset data corresponding to the row driving position according to the row driving position, and the gamma chip 212 is configured to convert the first preset data into a first common voltage.
The different first preset data correspond to different first common voltages.
It should be understood that the row driving position refers to a row position at which a scanning driving signal is supplied to the display panel 10 at the time of scanning the display panel 10 by the scanning driving circuit while the scanning driving circuit drives the display panel 10.
It should be understood that the TCON211 may transmit the first preset data to the gamma chip 212 through the transmission interface I2C protocol.
Since the first area 11 on the display panel 10 may include a plurality of rows of pixels, when driving to the row range of the first area 11, different row driving positions may correspond to the same first preset data, and in this case, the first area 11 corresponds to one first preset data; different row driving positions may also correspond to different first preset data, and at this time, each row of pixels in the first area 11 corresponds to one first preset data, and the different first preset data corresponds to different first common voltages.
For example, when the row range corresponding to the first region 11 is from row 1 to row 3, and the row driving position is set as row 1, the first preset data is S1, and the first common voltage corresponding to S1 is VS1The gamma chip 212 converts S1 into a first common voltage VS1And supplied to the first area 11; when the row driving position is row 2, the first preset data is S2, and the first common voltage corresponding to S2 is VS2The gamma chip 212 converts S2 into a first common voltage VS2And supplied to the first area 11; when the row driving position is row 3, the first preset data is S3, and the first common voltage corresponding to S3 is VS3The gamma chip 212 converts S3 into a first common voltage VS3And supplied to the first area 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 area 11, the first common voltage provided to the first area 11 can be continuously adjusted according to the first preset data.
When the row driving position belongs to the range of the target second region 12, the TCON211 is further configured to provide second preset data corresponding to the row driving position to the common voltage chip 213 corresponding to the target second region 12 according to the row driving position, where the common voltage chip 213 corresponding to the target second region 12 is configured to convert the second preset data into a second common voltage, and different second preset data correspond to different second common voltages.
It should be appreciated that the TCON211 may transmit the second preset data to each common voltage chip 213 via the transmission interface I2C protocol.
Since the second area 12 on the display panel 10 may include a plurality of rows of pixels, when driving to a row range where one or more second areas 12 are located, the 1 or more second areas 12 are target second areas. When the target second area is driven in the line range, different line driving positions can correspond to the same second preset data, and at the moment, the target second area corresponds to one second preset data; the different row driving positions may also correspond to different second preset data, at this time, each row of pixels in the target second region corresponds to one second preset data, and the different second preset data corresponds to different second common voltages.
For example, when the row range corresponding to the target second region is from row 4 to row 6, and the row driving position is set as row 4, the second preset data is S4, and the second common voltage corresponding to S4 is VS4The common voltage chip converts S4 into a second common voltage VS4And providing the target second area; when the row driving position is row 5, the second preset data is S5, and the second common voltage corresponding to S5 is VS5The common voltage chip 213 converts S5 into the second common voltage VS5And providing the target second area; when the row driving position is row 6, the second preset data is S6, and the second common voltage corresponding to S6 is VS6The common voltage chip 213 converts S6 into the second common voltage VS6And provided to the target second area.
Here, the same multiple sets of second preset data may be set corresponding to multiple target second areas in the same row range, each set of second preset data includes different second preset data corresponding to different row driving positions, and the multiple target second areas may achieve the same display effect.
Different sets of second preset data may also be set corresponding to the plurality of second areas 12 in the same row range, where each set of second preset data includes different second preset data corresponding to different row driving positions. At this time, the TCON211 is further configured to determine a corresponding set of second preset data according to the target second region, and then determine a corresponding one of the second preset data from the set of second preset data according to the row driving position.
It is to be understood that different second preset data are corresponding based on different row driving positions. When the display panel is driven to different lines in the range of the target second area, the second common voltage provided to the target second area can be continuously adjusted according to the second preset data, so that the display panel 10 can be adjusted to an optimal state when each line of each area is driven in a scanning mode, and the purpose of no flicker is achieved.
Fig. 4 shows a schematic structural diagram of another control circuit board.
In one possible implementation, as shown in fig. 4, the TCON211 includes: a row counter 2111, a control unit 2113 and a memory 2112, wherein the control unit 2113 is connected to the row counter 2111, the memory 2112, the gamma chip 212 and each common voltage chip 213.
The column counter 2111 is used to detect the column driving position.
For example, when the TCON211 receives data provided by other front-end devices, the row counter 2111 can detect the row driving position of the data corresponding to the subsequent scan driving according to the data.
As shown in fig. 5, the memory 2112 is configured to store a first data group 31 and a plurality of second data groups 32, the first data group 31 includes a plurality of first preset data, each second data group 32 includes a plurality of second preset data, and different groups of second data groups correspond to different common voltage chips 213.
The control unit 2113 is configured to obtain the row driving position from the row counter 2111, and obtain the first preset data corresponding to the row driving position and/or the second preset data corresponding to the row driving position in the plurality of second data sets from the memory 2112 according to the row driving position.
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 position in the plurality of second data sets to the corresponding common voltage chip 213.
In one possible implementation, the gamma chip 212 includes a first data analog converter for converting the first preset data into the first common voltage.
The common voltage chip 213 includes a second data analog converter for converting the second preset data into the second common voltage.
In a possible implementation manner, each second data group includes a plurality of identical second preset data, which corresponds to only one second preset data corresponding to one target second area.
At this time, when the row driving position belongs to the range of the target second region, the control unit 2113 does not acquire the second preset data corresponding to the row driving position from the second data group corresponding to the target second region according to the row driving position, that is, the target second region does not have the corresponding second preset data.
Then, the control unit 2113 is configured to determine the second preset data corresponding to the target second region by interpolation according to the second preset data corresponding to the plurality of second regions which are closest to the target second region and have the second preset data, respectively.
For example, the display panel 10 includes a first region 11, and 8 second regions 12 surrounding the first region 11. When the target second area located in the second row and the third column does not have corresponding second preset data, the second preset data of the target second area in the second row and the third column may be obtained through interpolation calculation according to the second preset data corresponding to the second area 12 in the first row and the third column, where the second data group includes a plurality of same second preset data, and the second preset data corresponding to the second area 12 in the third row and the third column.
In a possible implementation manner, the control unit 2113 is further configured to determine, according to second preset data corresponding to one second area 12 that is closest to the target second area and has second preset data, and second preset data corresponding to the target second area, second preset data corresponding to a plurality of second areas 12 located between the second area 12 and the target second area in proportion.
For example, when the target second area located in the third row and the third column 100 does not have corresponding second preset data, the second preset data of the target second area in the third row and the third column 100 can be obtained by interpolation according to the second preset data corresponding to the second area 12 in the third row and the third column 90 which is closest to the target second area and has the second preset data, and the second preset data corresponding to the second area 12 in the third row and the third column 110.
Meanwhile, according to the position relationship, second preset data corresponding to a plurality of second areas 12 in the third row, the 91 st column to the third row, the 99 th column, and the third row, the 101 th column to the third row, the 109 th column can be further proportionally determined.
It should be understood that when the second preset data is stored, a small amount of data can be stored, and the second preset data of all the areas is obtained through an interpolation algorithm in the later period, so that the storage space can be reduced, and the requirement of brightness homogenization can be met. Meanwhile, the algorithm is simple, and the processing speed is not influenced.
The embodiment of the present application further provides a method for acquiring an optimal value of a common voltage, which is applied to the display device 1 shown in the embodiment of the present application. Fig. 6 is a schematic flowchart illustrating a method for acquiring an optimal value of a common voltage according to an embodiment of the present application, where as shown in fig. 6, the embodiment of the present application includes:
s100, with the image capturing device, acquiring a brightness value corresponding to each region in the display panel 10, and acquiring a common voltage corresponding to each brightness value, and establishing a first correspondence relationship between a plurality of brightness values and a plurality of common voltages, the common voltages including a first common voltage and a second common voltage.
The above S100 may be expressed as: the method includes the steps of photographing 1 or more regions of the display panel 10 including a first region 11 and a second region 12 using a captured image device region, and acquiring a luminance value corresponding to each region of the display panel 10 from the photographed image. Meanwhile, when the shooting time is obtained, the magnitude of the common voltage applied to each region is the common voltage corresponding to each brightness value. Thereby, a first correspondence of the plurality of luminance values to the plurality of common voltages can be established.
For example, for the first region 11, a first correspondence relationship of a plurality of luminance values and a plurality of first common voltages may be established according to a plurality of luminance values corresponding to the first region 11 and the first common voltage corresponding to each luminance value.
For example, for one of the second regions 12, a first correspondence relationship between a plurality of luminance values and a plurality of second common voltages may be established based on a plurality of luminance values corresponding to the second region 12 and the second common voltage corresponding to each luminance value.
It should be understood that the image capture device is, for example, a Charge Coupled Device (CCD) camera.
It should be understood that the common voltage of the same magnitude may be supplied to the first region 11 and the second region 12 in advance, and thus, the brightness value corresponding to each region in the display panel 10 may be determined to be different due to the non-uniform brightness phenomenon.
S200, determining a plurality of corresponding flicker values according to a plurality of brightness values corresponding to each region, and establishing a second corresponding relation between the plurality of brightness values and the plurality of flicker values.
The flicker value refers to a difference value between brightness values acquired at two adjacent times for a certain region.
S300, determining a third corresponding relation between the common voltage and the plurality of flicker values according to the first corresponding relation and the second corresponding relation.
For example, for the first region 11, the difference between the luminance values acquired two adjacent times is a flicker value. Thus, from the m luminance values, m-1 flicker values can be determined. Then, the flicker value corresponding to the first luminance value is recorded as 0, and m flicker values are compensated. So that a second correspondence can be established between the plurality of luminance values and the plurality of flicker values. Based on this, according to the first corresponding relationship between the plurality of luminance values and the plurality of first common voltages and the second corresponding relationship between the plurality of luminance values and the plurality of flicker values, the third corresponding relationship between the plurality of flicker values and the plurality of first common voltages can be determined.
For example, for a certain second region 12, the difference between the luminance values acquired two adjacent times is a flicker value. Thus, from the n luminance values, n-1 flicker values can be determined. Then, the flicker value corresponding to the first brightness value is recorded as 0, and is complemented with n flicker values. So that a second correspondence can be established between the plurality of luminance values and the plurality of flicker values. Based on this, according to the first corresponding relationship between the plurality of luminance values and the plurality of second common voltages and the second corresponding relationship between the plurality of luminance values and the plurality of flicker values, the third corresponding relationship between the plurality of flicker values and the plurality of second common voltages can be determined.
S400, determining the minimum flicker value in the plurality of flicker values corresponding to each region.
And S500, determining the common voltage corresponding to the minimum flicker value of each area as the optimal value of the common voltage and storing the optimal value according to the minimum flicker value corresponding to each area and the third corresponding relation.
For example, with respect to the first region 11, the minimum value among the plurality of flicker values corresponding to the first region 11 is determined as the minimum flicker value, and the third correspondence relationship is searched for the minimum flicker value, so that the magnitude of the first common voltage corresponding to the minimum flicker value can be determined, and thus, the first common voltage corresponding to the minimum flicker value can be stored as the optimal first common voltage value corresponding to the first region 11.
For example, for one of the second regions 12, the minimum value among the plurality of flicker values corresponding to the second region 12 is determined as the minimum flicker value, and the third correspondence relationship is searched for the minimum flicker value, so that the magnitude of the second common voltage corresponding to the minimum flicker value can be determined, and thus, 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.
Based on this, the optimal value of the common voltage corresponding to each area 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.
Optionally, after the optimal value of the common voltage is burned in the memory 2112, the power may be turned on again to determine whether the optimal value of the common voltage acquired by each area is correct, if so, the process is ended, and if not, the adjustment may be performed again.
The embodiment of the present application provides a method for obtaining an optimal value of a common voltage, which obtains a plurality of luminance values corresponding to each region in a display panel 10 by using a capture device, and obtains a common voltage corresponding to each luminance value, thereby establishing a first corresponding relationship between the plurality of luminance values and the plurality of common voltages. Then, a plurality of corresponding flicker values are determined according to a plurality of brightness values corresponding to each region, and thus, a second correspondence relationship between the plurality of brightness values and the plurality of flicker values can be established. According to the first corresponding relation and the second corresponding relation, a third corresponding relation between the plurality of common voltages and the plurality of flicker values can be determined. And further determining the public voltage corresponding to the minimum flicker value from the third corresponding relation by determining the minimum flicker value corresponding to each region, namely determining the optimal value of the public voltage corresponding to each region.
An embodiment of the present application further provides a display control method, including:
according to the optimal value of the common voltage of each region obtained by the above method for obtaining the optimal value of the common voltage, the common voltage corresponding to each region of the display panel 10 is adjusted.
The embodiment of the application provides a display control method, which is characterized in that the public voltage corresponding to each region of a display panel is adjusted by acquiring the optimal value of the public voltage of each region, the public voltage corresponding to each region is the optimal value, and the corresponding flicker degree is the lowest, so that the flicker phenomenon of the whole display panel is reduced, or the flicker of the whole display panel disappears.
The embodiment of the present application further provides a display control device, configured to execute the processing steps in the above method for obtaining the optimal value of the common voltage.
The beneficial effects of the display control device provided by the embodiment of the application are the same as those of the method for acquiring the optimal value of the common voltage, and are not repeated herein.
The embodiment of the application also provides a display control device, which is used for executing the display control method.
The beneficial effects of the display control device provided by the embodiment of the application are the same as the corresponding beneficial effects of the display control method, and are not repeated herein.
The embodiment of the application also provides a computer-readable storage medium, wherein a computer program or an instruction is stored in the computer-readable storage medium, and when the computer program or the instruction is read and executed by a computer, the computer is enabled to execute the method for acquiring the optimal value of the common voltage and/or the method for controlling display.
The beneficial effects of the computer-readable storage medium provided by the embodiment of the application are the same as the beneficial effects corresponding to the above-mentioned method for obtaining the optimal value of the common voltage and/or the display control method, and are not described herein again.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not cause the essential features of the corresponding technical solutions to depart from the spirit scope of the technical solutions of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (10)
1. A display device, comprising: the display panel comprises a first area and at least one second area, and the control circuit board comprises a gamma chip and at least one common voltage chip;
the gamma chip is used for providing a first common voltage for the first region, and the at least one common voltage chip is used for providing a second common voltage for the at least one second region;
wherein the first common voltage and the second common voltage have different magnitudes.
2. The display device according to claim 1, wherein when the display panel includes a plurality of second regions, the first region is located in a center of the display panel, and the plurality of second regions are located on both sides or around the first region.
3. The display device according to claim 1 or 2, wherein the at least one common voltage chip has a one-to-many or one-to-one correspondence with the at least one second region, each of the second regions corresponding to one of the common voltage chips; the different common voltage chips are used for providing second common voltages with different sizes.
4. The display device according to claim 3, wherein the control circuit board further comprises: the time sequence controller is respectively connected with the gamma chip and each public voltage chip;
when the row driving position belongs to the range of the first area, the time sequence controller is used for providing first preset data corresponding to the row driving position to the gamma chip according to the row driving position, the gamma chip is used for converting the first preset data into the first public voltage, and different first preset data correspond to different first public voltages;
when the row driving position belongs to the range of a target second area, the time sequence controller is further configured to provide second preset data corresponding to the row driving position to a common voltage chip corresponding to the target second area according to the row driving position, the common voltage chip corresponding to the target second area is configured to convert the second preset data into a second common voltage, and different second preset data correspond to different second common voltages.
5. The display device according to claim 4, wherein the timing controller comprises: the control unit is connected with the row counter, the memory, the gamma chip and each common voltage chip;
the column counter is used for detecting the column driving position;
the memory is used for storing a first data group and a plurality of second data groups, the first data group comprises a plurality of first preset data, each second data group comprises a plurality of second preset data, and different groups of second data groups correspond to different common voltage chips;
the control unit is used for acquiring the row driving position from the row counter and acquiring first preset data corresponding to the row driving position and/or second preset data corresponding to the row driving position in the plurality of second data groups from the memory according to the row driving position;
the control unit is further configured to provide the first preset data to the gamma chip, and provide second preset data corresponding to the row driving positions in the plurality of second data groups to corresponding common voltage chips, respectively.
6. The display device according to claim 5, wherein the gamma chip comprises a first data analog converter for converting the first preset data into a first common voltage;
the common voltage chip includes a second data analog converter for converting the second preset data into a second common voltage.
7. The display device according to claim 5 or 6, wherein each second data group includes a plurality of identical second preset data, and when the row driving position belongs to a range of a target second region, the control unit does not acquire the second preset data corresponding to the row driving position from the second data group corresponding to the target second region according to the row driving position, the control unit is configured to: and interpolating to determine second preset data corresponding to the target second area according to second preset data which are respectively corresponding to a plurality of second areas which are closest to the target second area and have second preset data.
8. The display device according to claim 7, wherein the control unit is further configured to:
and according to second preset data corresponding to a second area which is closest to the target second area and has second preset data and the second preset data corresponding to the target second area, determining second preset data respectively corresponding to a plurality of second areas between the second area and the target second area in proportion.
9. A method for obtaining an optimal value of a common voltage, applied to the display device according to claim 1, wherein the method comprises:
acquiring a plurality of brightness values corresponding to each area in the display panel and a common voltage corresponding to each brightness value by utilizing an image capturing device, and establishing a first corresponding relation between the plurality of brightness values and the plurality of common voltages; the common voltage comprises a first common voltage and a second common voltage;
determining a plurality of corresponding flicker values according to a plurality of brightness values corresponding to each region, and establishing a second corresponding relation between the plurality of brightness values and the plurality of flicker values;
determining a third corresponding relation between the common voltage and the plurality of flicker values according to the first corresponding relation and the second corresponding relation;
determining a minimum flicker value in a plurality of flicker values corresponding to each region;
and determining the common voltage corresponding to the minimum flicker value of each region as an optimal common voltage value according to the minimum flicker value corresponding to each region and the third corresponding relation, and storing the optimal common voltage value.
10. A display control method, comprising:
the optimal value of the common voltage obtained according to the method of claim 9, wherein the common voltage corresponding to each region of the display panel is adjusted.
Priority Applications (2)
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| CN202110889104.2A CN113327538B (en) | 2021-08-04 | 2021-08-04 | Display device, method for acquiring optimal value of common voltage and display control method |
| PCT/CN2021/143323 WO2023010795A1 (en) | 2021-08-04 | 2021-12-30 | Display device, common voltage obtaining method, and display control method |
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| CN202110889104.2A CN113327538B (en) | 2021-08-04 | 2021-08-04 | Display device, method for acquiring optimal value of common voltage and display control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023010795A1 (en) * | 2021-08-04 | 2023-02-09 | 惠科股份有限公司 | Display device, common voltage obtaining method, and display control method |
| WO2023142057A1 (en) * | 2022-01-29 | 2023-08-03 | 京东方科技集团股份有限公司 | Brightness adjustment method, brightness adjustment device, and display device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982958A (en) * | 2005-12-17 | 2007-06-20 | 群康科技(深圳)有限公司 | Liquid-crystal display panel and its voltage adjustment |
| TW200725561A (en) * | 2005-12-16 | 2007-07-01 | Innolux Display Corp | Liquid crystal display panel and method of adjusting voltage of the liquid crystal display panel |
| KR20080048327A (en) * | 2006-11-28 | 2008-06-02 | 엘지디스플레이 주식회사 | Lc panel and display device and driving method thereof |
| KR20080061223A (en) * | 2006-12-27 | 2008-07-02 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method thereof |
| CN103345091A (en) * | 2013-07-05 | 2013-10-09 | 深圳市华星光电技术有限公司 | Display panel, driving method thereof and display device thereof |
| JP2014170449A (en) * | 2013-03-05 | 2014-09-18 | Renesas Sp Drivers Inc | Driver ic and display input device |
| CN106169281A (en) * | 2016-09-13 | 2016-11-30 | 深圳市华星光电技术有限公司 | Flicker of display panel degree regulation equipment and control method |
| CN108873419A (en) * | 2018-06-26 | 2018-11-23 | 南京中电熊猫液晶显示科技有限公司 | A kind of display device and its voltage adjusting method |
| CN112885280A (en) * | 2021-01-22 | 2021-06-01 | 重庆惠科金渝光电科技有限公司 | Driving method and device of display device, display equipment and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007058158A (en) * | 2005-07-26 | 2007-03-08 | Sanyo Epson Imaging Devices Corp | Electro-optical device, method of driving electro-optical device, and electronic apparatus |
| WO2019138740A1 (en) * | 2018-01-12 | 2019-07-18 | ソニーセミコンダクタソリューションズ株式会社 | Liquid crystal display device, method for driving liquid crystal display device, and electronic equipment |
| CN110276326B (en) * | 2019-06-27 | 2021-07-16 | 云谷（固安）科技有限公司 | Display device and display method |
| CN113327538B (en) * | 2021-08-04 | 2021-12-17 | 惠科股份有限公司 | Display device, method for acquiring optimal value of common voltage and display control method |
-
2021
- 2021-08-04 CN CN202110889104.2A patent/CN113327538B/en active Active
- 2021-12-30 WO PCT/CN2021/143323 patent/WO2023010795A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200725561A (en) * | 2005-12-16 | 2007-07-01 | Innolux Display Corp | Liquid crystal display panel and method of adjusting voltage of the liquid crystal display panel |
| CN1982958A (en) * | 2005-12-17 | 2007-06-20 | 群康科技(深圳)有限公司 | Liquid-crystal display panel and its voltage adjustment |
| KR20080048327A (en) * | 2006-11-28 | 2008-06-02 | 엘지디스플레이 주식회사 | Lc panel and display device and driving method thereof |
| KR20080061223A (en) * | 2006-12-27 | 2008-07-02 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method thereof |
| JP2014170449A (en) * | 2013-03-05 | 2014-09-18 | Renesas Sp Drivers Inc | Driver ic and display input device |
| CN103345091A (en) * | 2013-07-05 | 2013-10-09 | 深圳市华星光电技术有限公司 | Display panel, driving method thereof and display device thereof |
| CN106169281A (en) * | 2016-09-13 | 2016-11-30 | 深圳市华星光电技术有限公司 | Flicker of display panel degree regulation equipment and control method |
| CN108873419A (en) * | 2018-06-26 | 2018-11-23 | 南京中电熊猫液晶显示科技有限公司 | A kind of display device and its voltage adjusting method |
| CN112885280A (en) * | 2021-01-22 | 2021-06-01 | 重庆惠科金渝光电科技有限公司 | Driving method and device of display device, display equipment and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023010795A1 (en) * | 2021-08-04 | 2023-02-09 | 惠科股份有限公司 | Display device, common voltage obtaining method, and display control method |
| WO2023142057A1 (en) * | 2022-01-29 | 2023-08-03 | 京东方科技集团股份有限公司 | Brightness adjustment method, brightness adjustment device, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113327538B (en) | 2021-12-17 |
| WO2023010795A1 (en) | 2023-02-09 |
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