# US 11,308,904 B2 · Display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,308,904 B2 - Document ID: US11308904B2 - Status: Granted - Kind: B2 - Application number: 17/043,673 - Filed: 2018-11-09 - Published: 2021-01-21 - Granted: 2022-04-19 - Earliest claimed: 2018-10-22 - Assignees: Hkc Corporation Limited - Applicants: Hkc Corporation Limited - Inventors: Zhi Xiong - Web page: https://patentgrep.com/patent/US11308904B2 ## CPC - G09G 3/3614: {Control of polarity reversal in general} - G09G 3/3688: {suitable for active matrices only} - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - 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 data driver of the display panel of the present disclosure is configured to control an output mode of a data signal, and the output mode includes a first drive mode and a second drive mode. In different frames, data signals are outputted according to the first drive mode and second drive mode, respectively. ## Claims ### Claim 1 A display panel comprising: scan lines extending in a first direction and configured to provide a scan signal; data lines extending in a second direction and intersecting the scan lines and configured to provide a square wave data signal; wherein a waveform of the data signal comprises a plurality of sub-wave forms, the sub-wave forms having a starting end and a trailing end; at the starting end, a polarity of the data signal is inverted and the data signal gradually rises toward a predetermined value; and at the trail end, the polarity of the data signal is constant and the data signal reaches the predetermined value; a sub-pixel group connected to the scan lines and the data lines; the sub-pixel group comprising a first sub-pixel and a second sub-pixel; and a data driver connected to the data lines and configured to control an output mode of the data signal, the output mode comprising a first drive mode and a second drive mode; in the first drive mode, the first sub-pixel is charged through the data signal at the starting end, and the second sub-pixel is charged through the data signal at the trailing end; in the second drive mode, the first sub-pixel is charged through the data signal of the trail end, and the second sub-pixel is charged through the data signal of the starting end; wherein the data driver controls the data signal and the data signal is outputted according to the first drive mode in one frame and according to the second drive mode in another frame. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the data driver controls an output mode of the data signal and a plurality of frames are taken as one cycle. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein the plurality of frames are 2n frames, wherein n is a positive integer greater than or equal to 1. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein in one cycle, the number of frames in which the data signal being outputted according to the first drive mode is the same as the number of frames in which the data signal being outputted according to the second drive mode. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein the data signal comprises a plurality of sub-signals, when the scan lines provide one scan signal, the data lines provide one sub-signal; wherein in each of the frames of one cycle, the sub-signals charging the same first sub-pixel comprise a sub-signal in a positive polarity and a sub-signal in a negative polarity. ### Claim 6 (depends on 5) The display panel according to claim 5, wherein in each of the frames of one cycle, the sub-signals charging the same second sub-pixel comprise a sub-signal in the positive polarity and a sub-signal in the negative polarity. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein in one cycle, the number of sub-signals in the positive polarity is the same as the number of sub-signals in the negative polarity charging the same first sub-pixel. ### Claim 8 (depends on 7) The display panel according to claim 7, wherein in one cycle, the number of sub-signals in the positive polarity is the same as the number of sub-signals in the negative polarity charging the same second sub-pixel. ### Claim 9 (depends on 4) The display panel according to claim 4, wherein the data signal is outputted in a first half cycle according to the first drive mode, and the data signal is outputted in a second half cycle according to the second drive mode in one cycle. ### Claim 10 (depends on 3) The display panel according to claim 3, wherein 1≤n≤4. ### Claim 11 (depends on 1) The display panel according to claim 1, wherein a duration of one scan line providing one scan signal is T; in the first drive mode, after the scan signal is applied, the polarity of the data signal is firstly inverted in one T and then inverted every 2T. ### Claim 12 (depends on 11) The display panel according to claim 11, wherein in the second drive mode, after the scan signal is applied, the polarity of the data signal is inverted every 2T. ### Claim 13 (depends on 12) The display panel according to claim 12, wherein the data driver controls an output mode of the data signal and 4m frames are taken as one cycle, where in is a positive integer greater than or equal to 1. ### Claim 14 (depends on 13) The display panel according to claim 13, wherein m=1, the data signal is outputted according to the first drive mode in a first frame and a second frame in one cycle, and the data signal is outputted according to the second drive mode in a third frame and a fourth frame in one cycle. ### Claim 15 (depends on 13) The display panel according to claim 13, wherein m=1, the data signal is outputted according to the first drive mode in a first frame and a third frame in one cycle, and the data signal is outputted according to the second drive mode in a second frame and a fourth frame in one cycle. ### Claim 16 (depends on 13) The display panel according to claim 13, wherein m=1, the data signal is outputted according to the first drive mode in a first frame and a fourth frame in one cycle, and the data signal is outputted according to the second drive mode in a second frame and a third frame in one cycle. ### Claim 17 (depends on 1) The display panel according to claim 1, wherein the data driver controls an output mode of the data signal and 2n frames are taken as a frame group, wherein n is a positive integer greater than or equal to 1; and in the one frame group, the number of frames in which the data signal being outputted according to the first drive mode is the same as the number of frames in which the data signal being outputted by the second drive mode. ### Claim 18 (depends on 17) The display panel according to claim 17, wherein the data signal comprises a plurality of sub-signals, when the scan lines provide one scan signal, the data lines provide one sub-signal; in each of the frames of the one frame group, the sub-signals charging the same first sub-pixel comprise a sub-signal in a positive polarity and a sub-signal in a negative polarity; and in each of the frames of the one frame group, the sub-signals charging the same second sub-pixel comprise a sub-signal in the positive polarity and a sub-signal in the negative polarity. ### Claim 19 (depends on 18) The display panel according to claim 18, wherein in the one frame group, the number of sub-signals in the positive polarity is the same as the number of sub-signals in the negative polarity charging the same first sub-pixel; and in the one frame group, the number of sub-signals in the positive polarity is the same as the number of sub-signals in the negative polarity charging the same second sub-pixel.