# US 2017/0256191 A1 · Amoled display device and driving method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0256191 A1 - Document ID: US20170256191A1 - Status: Published application - Kind: A1 - Application number: 14/908,126 - Filed: 2015-12-22 - Published: 2017-09-07 - Earliest claimed: 2015-10-10 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co. Ltd. - Inventors: Yichien Wen; Yugang Bao - Web page: https://patentgrep.com/patent/US20170256191A1 ## CPC - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3225: using an active matrix - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 3/3275: Details of drivers for data electrodes - G09G 2300/0443: with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve - 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 invention provides an AMOLED display device and driving method thereof. The AMOLED display device comprises: a driving circuit (10) and a display panel (20) connected to the driving circuit (10); the display panel (20) comprising a plurality of sub-pixels arranged in an array form, and the sub-pixels further comprising red sub-pixels (R), green sub-pixels (G), blue sub-pixels (B), and white sub-pixels (W); the driving circuit (10) inputting a Gamma control signal (Gamma_change), and outputting a red Gamma voltage curve (Red_Gamma), a green Gamma voltage curve (Green_Gamma), a blue Gamma voltage curve (Blue_Gamma), and a white Gamma voltage curve (White_Gamma); based on different Gamma control signal (Gamma_change), the driving circuit (10) drives the display panel (20) with different sub-pixel arrangements to reduce manufacturing cost, and improve competitiveness. ## Claims ### Claim 1 An active matrix organic light-emitting diode (AMOLED) display device, which comprises: a driving circuit, and a display panel connected to the driving circuit; wherein: the display panel comprising: a plurality of sub-pixels arranged in an array form, the sub-pixels further comprising: red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels; the driving circuit inputting Gamma control signals, and outputting a red Gamma voltage curve, a green Gamma voltage curve, a blue Gamma voltage curve, and a white Gamma voltage curve; and based on different Gamma control signals, the driving circuit driving the display panel with different sub-pixel arrangement. ### Claim 2 (depends on 1) The AMOLED display device as claimed in claim 1, wherein each column of sub-pixels is arranged in the order of red sub-pixel, followed by green sub-pixel, followed by blue sub-pixel, followed by white sub-pixel, and so on; and the Gamma control signal is 0, for a natural number n, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (4n+1)-th, (4n+2)-th, (4n+3)-th and (4n+4)-th rows of sub-pixels respectively. ### Claim 3 (depends on 1) The AMOLED display device as claimed in claim 1, wherein each odd-numbered column of sub-pixels is arranged in the order of interleaved red sub-pixel and green sub-pixel, and each even-numbered column of sub-pixels is arranged in the order of interleaved blue sub-pixel and white sub-pixel; and the Gamma control signal is 1, for natural numbers n and m, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (2n+1)-th row (2m+1)-th column of sub-pixels, (2n+2)-th row (2m+1)-th column of sub-pixels, (2n+1)-th row (2m+2)-th column of sub-pixels, and (2n+2)-th row (2m+2)-th column of sub-pixels, respectively. ### Claim 4 (depends on 1) The AMOLED display device as claimed in claim 1, wherein Each odd-numbered column of sub-pixels is arranged in the order of red sub-pixel, followed by green sub-pixel, followed by blue sub-pixel, followed by white sub-pixel, and so on, and each even-numbered column of sub-pixels is arranged in the order of blue sub-pixel, followed by white sub-pixel, followed by red sub-pixel, followed by green sub-pixel, and so on; and the Gamma control signal is 2, for natural numbers n and m, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (2m+1)-th column (4n+1)-th row of sub-pixels, (2m+1)-th column (4n+2)-th row of sub-pixels, (2m+1)-th column (4n+3)-th row of sub-pixels, (2m+1)-th column and (4n+4)-th row of sub-pixels, respectively, and inputs the blue Gamma voltage curve, white Gamma voltage curve, red Gamma voltage curve, and green Gamma voltage curve, to the (2m+2)-th column (4n+1)-th row of sub-pixels, (2m+2)-th column (4n+2)-th row of sub-pixels, (2m+2)-th column (4n+3)-th row of sub-pixels, (2m+2)-th column and (4n+4)-th row of sub-pixels, respectively. ### Claim 5 (depends on 1) The AMOLED display device as claimed in claim 1, wherein the driving circuit also imports a plurality of red Gamma reference voltages, green Gamma reference voltages, blue Gamma reference voltages and white Gamma reference voltages for generating the red Gamma voltage curve, green Gamma voltage, blue Gamma voltage curve and white Gamma voltage curve. ### Claim 6 A driving method of an active matrix organic light-emitting diode (AMOLED) display device, which comprises: Step 1: providing an AMOLED display device, the AMOLED display device having a driving circuit and a display panel connected to the driving circuit; the display panel comprising a plurality of sub-pixels arranged in an array form, and the sub-pixels further comprising red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels; and the driving circuit inputting Gamma control signals, and outputting a red Gamma voltage curve, a green Gamma voltage curve, a blue Gamma voltage curve, and a white Gamma voltage curve; Step 2: based on different arrangement of the sub-pixels in the display panel, different Gamma control signal is inputted to the driving circuit; and Step 3: based on different Gamma control signals inputted to the driving circuit, the driving circuit outputting corresponding Gamma curves to drive the display panel to accomplish displaying. ### Claim 7 (depends on 6) The driving method of AMOLED display device as claimed in claim 6, wherein: in Step 2, each column of sub-pixels is arranged in the order of red sub-pixel, followed by green sub-pixel, followed by blue sub-pixel, followed by white sub-pixel, and so on; the Gamma control signal is 0; and in Step 3, for a natural number n, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (4n+1)-th, (4n+2)-th, (4n+3)-th and (4n+4)-th rows of sub-pixels respectively. ### Claim 8 (depends on 6) The driving method of AMOLED display device as claimed in claim 6, wherein: In Step 2, each odd-numbered column of sub-pixels is arranged in the order of interleaved red sub-pixel and green sub-pixel, and each even-numbered column of sub-pixels is arranged in the order of interleaved blue sub-pixel and white sub-pixel; the Gamma control signal is 1; and in Step 3, for natural numbers n and m, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (2n+1)-th row (2m+1)-th column of sub-pixels, (2n+2)-th row (2m+1)-th column of sub-pixels, (2n+1)-th row (2m+2)-th column of sub-pixels, and (2n+2)-th row (2m+2)-th column of sub-pixels, respectively. ### Claim 9 (depends on 6) The driving method of AMOLED display device as claimed in claim 6, wherein: In Step 2, each odd-numbered column of sub-pixels is arranged in the order of red sub-pixel, followed by green sub-pixel, followed by blue sub-pixel, followed by white sub-pixel, and so on, and each even-numbered column of sub-pixels is arranged in the order of blue sub-pixel, followed by white sub-pixel, followed by red sub-pixel, followed by green sub-pixel, and so on; the Gamma control signal is 2; and in Step 3, for natural numbers n and m, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (2m+1)-th column (4n+1)-th row of sub-pixels, (2m+1)-th column (4n+2)-th row of sub-pixels, (2m+1)-th column (4n+3)-th row of sub-pixels, (2m+1)-th column and (4n+4)-th row of sub-pixels, respectively, and inputs the blue Gamma voltage curve, white Gamma voltage curve, red Gamma voltage curve, and green Gamma voltage curve, to the (2m+2)-th column (4n+1)-th row of sub-pixels, (2m+2)-th column (4n+2)-th row of sub-pixels, (2m+2)-th column (4n+3)-th row of sub-pixels, (2m+2)-th column and (4n+4)-th row of sub-pixels, respectively. ### Claim 10 (depends on 6) The driving method of AMOLED display device as claimed in claim 6, wherein in Step 3, the driving circuit imports a plurality of red Gamma reference voltages, green Gamma reference voltages, blue Gamma reference voltages and white Gamma reference voltages for generating the red Gamma voltage curve, green Gamma voltage, blue Gamma voltage curve and white Gamma voltage curve. ### Claim 11 A driving method for an active matrix organic light-emitting diode (AMOLED) display device, which comprises: Step 1: providing an AMOLED display device, the AMOLED display device having a driving circuit and a display panel connected to the driving circuit; the display panel comprising a plurality of sub-pixels arranged in an array form, and the sub-pixels further comprising red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels; and the driving circuit inputting Gamma control signals, and outputting a red Gamma voltage curve, a green Gamma voltage curve, a blue Gamma voltage curve, and a white Gamma voltage curve; Step 2: based on different arrangement of the sub-pixels in the display panel, a different Gamma control signal is inputted to the driving circuit; and Step 3: based on different Gamma control signals inputted to the driving circuit, the driving circuit outputting corresponding Gamma curves to drive the display panel to accomplish displaying; wherein in Step 2, each column of sub-pixels is arranged in the order of red sub-pixel, followed by green sub-pixel, followed by blue sub-pixel, followed by white sub-pixel, and so on; the Gamma control signal is 0; in Step 3, for a natural number n, the driving circuit inputs the red Gamma voltage curve, green Gamma voltage curve, blue Gamma voltage curve and white Gamma voltage curve to the (4n+1)-th, (4n+2)-th, (4n+3)-th and (4n+4)-th rows of sub-pixels respectively; and in Step 3, the driving circuit imports a plurality of red Gamma reference voltages, green Gamma reference voltages, blue Gamma reference voltages and white Gamma reference voltages for generating the red Gamma voltage curve, green Gamma voltage, blue Gamma voltage curve and white Gamma voltage curve.