# US 10,504,439 B2 · OLED display panel and driving method using differential data for voltage compensation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,439 B2 - Document ID: US10504439B2 - Status: Granted - Kind: B2 - Application number: 15/572,502 - Filed: 2017-11-02 - Published: 2019-02-21 - Granted: 2019-12-10 - Earliest claimed: 2017-08-18 - Assignees: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Jing Xu; Ming-jong Jou - Web page: https://patentgrep.com/patent/US10504439B2 ## CPC - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0295: by monitoring each display pixel - G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements - G09G 2370/045: using multiple communication channels, e.g. parallel and serial - G09G 2370/14: Use of low voltage differential signaling [LVDS] for display data communication - 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 disclosure provides an OLED display panel and a driving method for the OLED display panel. The display panel comprises a first data converter configured to encode voltage data into parallel transmission data, the number of data bits of the transmission data being greater than that of the voltage data; a second data converter configured to convert the transmission data into serial relay data; a transmitter configured to convert the relay data into differential data and send the differential data; and a timing controller configured to receive the differential data and clock information in the differential data, and perform voltage compensation. ## Claims ### Claim 1 An OLED display panel, comprising: a sensing unit configured to acquire voltage data of an OLED of the display panel or voltage data of a driving thin-film transistor of a sub-pixel of the display panel; a first data converter configured to encode the voltage data into parallel transmission data according to a preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data; a second data converter configured to convert the transmission data into serial relay data; a transmitter configured to convert the relay data into differential data and send the differential data to a timing controller; the timing controller configured to receive the differential data and extract clock information from the differential data, and perform voltage compensation on a sub-pixel or an OLED according to the differential data; a receiver configured to receive the differential data and convert the differential data into the relay data; a clock data restorer configured to acquire the clock information from the relay data; a third data converter configured to convert the relay data into the transmission data according to the clock information; and a fourth data converter configured to decode the transmission data into the voltage data according to the preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data; wherein the timing controller is further configured to receive the voltage data and perform voltage compensation on the sub-pixel or the OLED according to the voltage data; wherein the sensing unit comprises a plurality of sensing units which are connected in a cascaded manner; the first data converter, the second data converter, and the transmitter are integrated in the sensing unit. ### Claim 2 (depends on 1) The OLED display panel as claimed in claim 1, wherein the sensing unit is an independent element. ### Claim 3 (depends on 1) The OLED display panel as claimed in claim 1, wherein the OLED display panel further comprises a source driving chip; and the sensing unit is integrated in the source driving chip. ### Claim 4 (depends on 1) The OLED display panel as claimed in claim 1, wherein the first data converter, the second data converter, and the transmitter are independent elements. ### Claim 5 (depends on 1) The OLED display panel as claimed in claim 1, wherein the first data converter is an 8b/10b encoder. ### Claim 6 An OLED display panel, comprising: a sensing unit configured to acquire voltage data of an OLED of the display panel or voltage data of a driving thin-film transistor of a sub-pixel of the display panel; a first data converter configured to encode the voltage data into parallel transmission data according to a preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data; a second data converter configured to convert the transmission data into serial relay data; a transmitter configured to convert the relay data into differential data and send the differential data to a timing controller; and the timing controller configured to receive the differential data and extract clock information from the differential data, and perform voltage compensation on a sub-pixel or an OLED according to the differential data; wherein the first data converter, the second data converter, and the transmitter are integrated in the sensing unit. ### Claim 7 (depends on 6) The OLED display panel as claimed in claim 6, wherein the display panel further comprises: a receiver configured to receive the differential data and convert the differential data into the relay data; a clock data restorer configured to acquire the clock information from the relay data; a third data converter configured to convert the relay data into the transmission data according to the clock information; a fourth data converter configured to decode the transmission data into the voltage data according to the preset encoding rule, the number of data bits of the transmission data being greater than that of the voltage data; the timing controller further configured to receive the voltage data and perform voltage compensation on the sub-pixel or the OLED according to the voltage data. ### Claim 8 (depends on 6) The OLED display panel as claimed in claim 6, wherein the sensing unit is an independent element. ### Claim 9 (depends on 6) The OLED display panel as claimed in claim 6, wherein the OLED display panel further comprises a source driving chip; and the sensing unit is integrated in the source driving chip. ### Claim 10 (depends on 6) The OLED display panel as claimed in claim 6, wherein the sensing unit comprises a plurality of sensing units which are connected in a cascaded manner. ### Claim 11 (depends on 6) The OLED display panel as claimed in claim 6, wherein the first data converter, the second data converter, and the transmitter are independent elements. ### Claim 12 (depends on 6) The OLED display panel as claimed in claim 6, wherein the first data converter is an 8b/10b encoder.