# US 12,592,206 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,592,206 B2 - Document ID: US12592206B2 - Status: Granted - Kind: B2 - Application number: 18/260,001 - Filed: 2023-04-18 - Published: 2024-12-19 - Granted: 2026-03-31 - Earliest claimed: 2023-02-09 - Assignees: Tcl China Star Optoelectronics Technology Co., Ltd. - Applicants: Tcl China Star Optoelectronics Technology Co., Ltd. - Inventors: Youngil Ban; Jinfeng Liu - Web page: https://patentgrep.com/patent/US12592206B2 ## CPC - G09G 3/3614: {Control of polarity reversal in general} - G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)} - G09G 3/3685: {Details of drivers for data electrodes} - G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0209: Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract The present application discloses a display device. The display device includes a display panel and a driving module. Each grayscale includes a positive polarity voltage and a negative polarity voltage symmetrical with respect to a common voltage. A data line is configured to output corresponding data voltages to each sub-pixel respectively. The driving module includes an adjustment unit. The adjustment unit is configured to increase the voltage values of the positive polarity voltages to obtain the compensated positive polarity voltages. The data voltages are the negative polarity voltages or the compensated positive polarity voltages. ## Claims ### Claim 1 A display device, comprising: a display panel, wherein the display panel comprises a plurality of data lines and a plurality of sub-pixels, and each of the data lines is connected to ones of the sub-pixels; and within a frame period of image, each of the sub-pixels is configured to display according to a grayscale corresponding to a positive polarity voltage and a negative polarity voltage symmetrical with respect to a common voltage, and the each of the data lines is configured to transmit a data voltage to each of the ones of the sub-pixels; and a driving module connected to the display panel, wherein the driving module is configured to output the data voltage to the each of the data lines and comprises an adjustment unit configured to increase a voltage value of the positive polarity voltage to obtain a compensated positive polarity voltage, wherein the data voltage comprises the negative polarity voltage and the compensated positive polarity voltage which are simultaneously output for the grayscale; the driving module comprises a system chip, a timing control chip and a source driving chip, the timing control chip is integrated in the system chip, and the adjustment unit is integrated in the source driving chip; the source driving chip comprises a data memory, a latch and a digital-to-analog converter arranged in sequence; and the adjustment unit is disposed between the data memory and the digital-to-analog converter or after the digital-to-analog converter, and the adjustment unit is configured to adjust the positive polarity voltage corresponding to each of ones of the sub-pixels arranged in a row each time. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the grayscale comprises a positive polarity grayscale corresponding to the positive polarity voltage and a negative polarity grayscale corresponding to the negative polarity voltage, and the adjustment unit is configured to increase a grayscale value of the positive polarity grayscale. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the timing control chip is further configured to set a polarity of the data voltage transmitted by each of the data lines in a first frame of image. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the latch comprises a first latch and a second latch disposed between the first latch and the digital-to-analog converter, the second latch is configured to latch the data voltage corresponding to each of ones of the sub-pixels arranged in a current row, and the first latch is configured to latch the data voltage corresponding to each of ones of the sub-pixels arranged in a next row; wherein the adjustment unit is disposed between the first latch and the second latch. ### Claim 5 (depends on 1) The display device according to claim 1, wherein, within a same frame period of image, a polarity of the data voltage transmitted by one of every two adjacent ones of the data lines is opposite to a polarity of the data voltage transmitted by another of the every two adjacent ones of the data lines; and wherein the sub-pixels are arranged in an array, and within the same frame period of image, a polarity of the data voltage corresponding to one of every two adjacent ones of the sub-pixels is opposite to a polarity of the data voltage corresponding to another of the every two adjacent ones of the sub-pixels, or a polarity of the data voltage corresponding to each of ones of the sub-pixels arranged in one of every adjacent two columns is opposite to a polarity of the data voltage corresponding to each of ones of the sub-pixels arranged in another of the every adjacent two columns. ### Claim 6 (depends on 5) The display device according to claim 5, wherein a polarity of the data voltage transmitted by one of the data lines within one of two adjacent frame periods of image is opposite to a polarity of the data voltage transmitted by the one of the data lines within another of the two adjacent frame periods of image. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the driving module is further configured to determine, based on a monochrome image of the grayscale, an increase value of the positive polarity voltage corresponding to the grayscale; and the driving module further comprises a register configured to store the increase value of the positive polarity voltage corresponding to the grayscale. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the grayscales comprise a first grayscale and a second grayscale, the first grayscale is greater than the second grayscale, and the increase value of the positive polarity voltage corresponding to the first grayscale is greater than the increase value of the positive polarity voltage corresponding to the second grayscale. ### Claim 9 (depends on 1) The display device according to claim 1, wherein for a same grayscale, the compensated positive polarity voltage corresponding to one of the sub-pixels close to the driving module is greater than the compensated positive polarity voltage corresponding to one of the sub-pixels away from the driving module. ### Claim 10 A display device, comprising: a display panel, wherein the display panel comprises a plurality of data lines and a plurality of sub-pixels, and each of the data lines is connected to ones of the sub-pixels; and within a frame period of image, each of the sub-pixels is configured to display according to a grayscale corresponding to a positive polarity voltage and a negative polarity voltage symmetrical with respect to a common voltage, and the each of the data lines is configured to transmit a data voltage to each of the ones of the sub-pixels; and a driving module connected to the display panel and configured to output the data voltage to the each of the data lines, wherein the driving module comprises an adjustment unit, a system chip, a timing control chip and a source driving chip, the timing control chip is integrated in the system chip, and the adjustment unit is integrated in the source driving chip, wherein the adjustment unit is configured to determine, based on a monochrome image of the grayscale, an increase value of the positive polarity voltage corresponding to the grayscale to obtain a compensated positive polarity voltage; and the data voltage comprises the negative polarity voltage and the compensated positive polarity voltage which are simultaneously output for the grayscale; the source driving chip comprises a data memory, a latch and a digital-to-analog converter arranged in sequence; and the adjustment unit is disposed between the data memory and the digital-to-analog converter or after the digital-to-analog converter, and the adjustment unit is configured to adjust the positive polarity voltage corresponding to each of ones of the sub-pixels arranged in a row each time. ### Claim 11 (depends on 10) The display device according to claim 10, wherein the latch comprises a first latch and a second latch disposed between the first latch and the digital-to-analog converter, the second latch is configured to latch the data voltage corresponding to each of ones of the sub-pixels arranged in a current row, and the first latch is configured to latch the data voltage corresponding to each of ones of the sub-pixels arranged in a next row; wherein the adjustment unit is disposed between the first latch and the second latch. ### Claim 12 (depends on 10) The display device according to claim 10, wherein the grayscales comprise a first grayscale and a second grayscale, the first grayscale is greater than the second grayscale, and the increase value of the positive polarity voltage corresponding to the first grayscale is greater than the increase value of the positive polarity voltage corresponding to the second grayscale. ### Claim 13 (depends on 10) The display device according to claim 10, wherein for a same grayscale, the compensated positive polarity voltage corresponding to one of the sub-pixels close to the driving module is greater than the compensated positive polarity voltage corresponding to one of the sub-pixels away from the driving module. ### Claim 14 (depends on 10) The display device according to claim 10, wherein the grayscale comprises a positive polarity grayscale corresponding to the positive polarity voltage and a negative polarity grayscale corresponding to the negative polarity voltage, and the adjustment unit is configured to increase a grayscale value of the positive polarity grayscale. ### Claim 15 (depends on 10) The display device according to claim 10, wherein the timing control chip is further configured to set a polarity of the data voltage transmitted by each of the data lines in a first frame of image. ### Claim 16 (depends on 10) The display device according to claim 10, wherein, within a same frame period of image, a polarity of the data voltage transmitted by one of every two adjacent ones of the data lines is opposite to a polarity of the data voltage transmitted by another of the every two adjacent ones of the data lines; and the sub-pixels are arranged in an array, and within the same frame period of image, a polarity of the data voltage corresponding to one of every two adjacent ones of the sub-pixels is opposite to a polarity of the data voltage corresponding to another of the every two adjacent ones of the sub-pixels, or a polarity of the data voltage corresponding to each of ones of the sub-pixels arranged in one of every adjacent two columns is opposite to a polarity of the data voltage corresponding to each of ones of the sub-pixels arranged in another of the every adjacent two columns. ### Claim 17 (depends on 16) The display device according to claim 16, wherein a polarity of the data voltage transmitted by one of the data lines within one of two adjacent frame periods of image is opposite to a polarity of the data voltage transmitted by the one of the data lines within another of the two adjacent frame periods of image.