# US 12,190,838 B2 · Control method for display panel and display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,190,838 B2 - Document ID: US12190838B2 - Status: Granted - Kind: B2 - Application number: 17/789,230 - Filed: 2022-05-13 - Published: 2024-06-06 - Granted: 2025-01-07 - Earliest claimed: 2022-05-07 - Assignees: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Yoonsung Um; Zhigang Peng - Web page: https://patentgrep.com/patent/US12190838B2 ## CPC - 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 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3696: {Generation of voltages supplied to electrode drivers} - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - 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 control method for a display panel and a display panel, which adjust a shared voltage signal transmitted by the one of the sharing lines electrically connected to the auxiliary pixel electrodes of the sub-pixels corresponding to a color of color shift according to the color of color shift displayed by the display panel, so that the shared voltage signal after the adjusting is different from the shared voltage signal transmitted by the sharing lines electrically connected to the auxiliary pixel electrodes of the sub-pixels with different emission colors, so as to alleviate the problem of color shift of the display panel. ## Claims ### Claim 1 A control method for a display panel, wherein the display panel comprises a plurality of sub-pixels, a plurality of pixel driving circuits, a plurality of data lines, and a plurality of sharing lines; each of the sub-pixels comprises a main pixel electrode and an auxiliary pixel electrode, each of the pixel driving circuits is electrically connected to a corresponding one of the sub-pixels, and each of the pixel driving circuits comprises a first transistor, a second transistor, and a third transistor; each of the data lines is connected to a corresponding one of main pixel electrodes through the first transistor, each of the data lines is further electrically connected to a corresponding one of auxiliary pixel electrodes through the second transistor, and each of the sharing lines is electrically connected to the corresponding one of the auxiliary pixel electrodes through the third transistor; and the control method comprises the following steps: Step S1: according to a color of color shift displayed by the display panel, adjusting a shared voltage signal transmitted by one of the sharing lines electrically connected to the auxiliary pixel electrode of one of the sub-pixels corresponding to the color of color shift, so that the shared voltage signal after the adjusting is different from a shared voltage signal transmitted by the sharing lines electrically connected to the auxiliary pixel electrodes of the sub-pixels with different emission colors; wherein the plurality of sub-pixels comprise a first sub-pixel and a second sub-pixel with different light emission colors, the plurality of sharing lines comprise a first sharing line electrically connected to the first sub-pixel and a second sharing line electrically connected to the second sub-pixel, the plurality of data lines comprise a first data line electrically connected to the first sub-pixel and a second data line electrically connected to the second sub-pixel, a voltage of a shared voltage signal transmitted by the first sharing line has a first relative voltage with respect to a pixel voltage transmitted by the first data line, a voltage of a shared voltage signal transmitted by the second sharing line has a second relative voltage with respect to a pixel voltage transmitted by the second data line; and when the color of the color shift displayed on the display panel is same as an emission color of the first sub-pixel, the step S1 comprises: Step S11: adjusting the first relative voltage so that the first relative voltage after the adjusting is greater than the second relative voltage. ### Claim 2 (depends on 1) The control method according to claim 1, wherein the sharing voltage signal transmitted by the first sharing line has a first voltage when the pixel voltage corresponding to the pixel voltage transmitted by the first data line is positive, the sharing voltage signal transmitted by the first sharing line has a second voltage when the pixel voltage corresponding to the pixel voltage transmitted by the first data line is negative; the sharing voltage signal transmitted by the second sharing lines has a third voltage when the pixel voltage corresponding to the pixel voltage transmitted by the second data line is positive, the shared voltage signal transmitted by the second sharing line has a fourth voltage when the pixel voltage corresponding to the pixel voltage transmitted by the second data line is negative; and the step S11 comprises: adjusting the first voltage and the second voltage so that the first voltage after the adjusting is smaller than the third voltage, and the second voltage after the adjusting is greater than or equal to the fourth voltage. ### Claim 3 (depends on 2) The control method according to claim 2, wherein the first voltage after the adjusting is smaller than the second voltage after the adjusting, and the third voltage is smaller than the fourth voltage. ### Claim 4 (depends on 2) The control method according to claim 2, wherein a difference between the third voltage and the first voltage after the adjusting is greater than OV and less than or equal to 5V. ### Claim 5 (depends on 2) The control method according to claim 2, wherein a difference between the second voltage after the adjusting and the fourth voltage is greater than or equal to 0V and less than or equal to 5V. ### Claim 6 (depends on 1) The control method according to claim 1, wherein the shared voltage signal transmitted by the first sharing line has a fifth voltage, the shared voltage signal transmitted by the second sharing lines has a sixth voltage, and the step S11 comprises: adjusting the fifth voltage so that the fifth voltage after the adjusting is smaller than the sixth voltage. ### Claim 7 (depends on 1) The control method according to claim 1, wherein the step S11 comprises: adjusting a resistance of the first sharing line, so that after the adjusting, the resistance of the first sharing line is greater than a resistance of the second sharing line. ### Claim 8 (depends on 7) The control method according to claim 7, wherein the display panel further comprises a driving module and a plurality of resistors, and the plurality of resistors comprise first resistors connected in series between the driving module and the first sharing line, and second resistors connected in series between the driving module and the second sharing line; and the step S11 comprises: adjusting a resistance of the first resistors to be greater than a resistance of the second resistors. ### Claim 9 (depends on 8) The control method according to claim 8, wherein the display panel comprises a flexible circuit board electrically connected between a printed circuit board and the display panel; and the plurality of resistors are located on the printed circuit board. ### Claim 10 A display panel, wherein the display panel comprises: a plurality of sub-pixels, wherein each of the sub-pixels comprises a main pixel electrode and an auxiliary pixel electrode; a plurality of pixel driving circuits, wherein each of the pixel driving circuits is electrically connected to a corresponding one of the sub-pixels, and each of the pixel driving circuits comprises a first transistor, a second transistor, and a third transistor; a plurality of data lines, wherein each of the data lines is connected to a corresponding one of main pixel electrodes through the first transistor, each of the data lines is further electrically connected to a corresponding one of auxiliary pixel electrodes through the second transistor; and a plurality of sharing lines, wherein each of the sharing lines is electrically connected to a corresponding one of the auxiliary pixel electrodes through the third transistor; wherein shared voltage signals transmitted by the sharing lines electrically connected to the auxiliary pixel electrodes of the sub-pixels with different emission colors are at least partially different; wherein the plurality of the sub-pixels comprise a first sub-pixel and a second sub-pixel with different light emission colors, the plurality of sharing lines comprise a first sharing line electrically connected to the first sub-pixel and a second sharing line electrically connected to the second sub-pixel, the plurality of data lines comprise a first data line electrically connected to the first sub-pixel and a second data line electrically connected to the second sub-pixel, a voltage of a shared voltage signal transmitted by the first sharing line has a first relative voltage with respect to a pixel voltage transmitted by the first data line, a voltage of a shared voltage signal transmitted by the second sharing line has a second relative voltage with respect to a pixel voltage transmitted by the second data line; and when a color of a color shift displayed on the display panel is same as an emission color of the first sub-pixel, the first relative voltage is greater than the second relative voltage. ### Claim 11 (depends on 10) The display panel according to claim 10, wherein the display panel comprises a display area, each of the sharing lines comprises a first line, a second line, and a third line located in the display area, the first line and the second line extend along a second direction and are arranged in parallel with the data lines, and the third line electrically connects the first line and the second line. ### Claim 12 (depends on 11) The display panel according to claim 11, wherein the first line, the second line, and the third line are disposed in a same layer as the data lines. ### Claim 13 (depends on 11) The display panel according to claim 11, wherein at least one of the sharing lines further comprises a fourth line, the fourth line is electrically connected to at least one of the first line, the second line, or the third line; and wherein a square resistance of the fourth line is greater than a square resistance of the first line. ### Claim 14 (depends on 13) The display panel according to claim 13, wherein a material of the fourth line comprises at least one of indium tin oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide, antimony-doped tin oxide, or conductive oxide thin films. ### Claim 15 (depends on 13) The display panel according to claim 13, wherein the display panel further comprises: a second insulating layer disposed on the data lines, a color resist layer disposed on the second insulating layer; and, a third insulating layer disposed on the color resist layer, wherein the fourth line is located between the third insulating layer and the color resist layer. ### Claim 16 (depends on 11) The display panel according to claim 11, wherein each of the main pixel electrodes has a first trunk extending along the second direction; and each of the auxiliary pixel electrodes has a second trunk extending along the second direction; and wherein an orthographic projection of the first line on the first trunk is located within the first trunk, an orthographic projection of the second line on the second trunk is located within the second trunk, and the third line is located between the auxiliary pixel electrode and the main pixel electrode of each of the sub-pixels. ### Claim 17 (depends on 11) The display panel according to claim 11, wherein the third line further comprises a first sub-section and a second sub-section spaced apart from each other, and at least one of the sharing lines further comprises a fifth line located between the main pixel electrode and the auxiliary pixel electrode and located in the display area, and two terminals of the fifth line are electrically connected to the first sub-section and the second sub-section; and wherein a square resistance of the fifth line is greater than a square resistance of the third line, and the fifth line is located in a same layer as the main pixel electrode and the auxiliary pixel electrode. ### Claim 18 (depends on 17) The display panel according to claim 17, wherein the display panel further comprises a plurality of first shielding lines and a plurality of second shielding lines, each of the first shielding lines extends along the second direction, each of the first shielding lines is located between adjacent ones of the sub-pixels, and an orthographic projection of the data lines on the first shielding lines is located within a boundary of the first shielding lines; each of the second shielding lines are located between the main pixel electrode and the auxiliary pixel electrode of each of the sub-pixels, and each of the second shielding line is electrically connected to adjacent ones of the first shielding lines; and wherein the first shielding lines and the second shielding lines are disposed in a same layer as the main pixel electrode and the auxiliary pixel electrode, and the fifth line is located on at least one side of the second shielding lines. ### Claim 19 (depends on 10) The display panel according to claim 10, wherein the display panel further comprises an alternating current AC voltage source, and the AC voltage source is electrically connected to the plurality of the sharing lines.