# US 2020/0402437 A1 · Display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0402437 A1 - Document ID: US20200402437A1 - Status: Published application - Kind: A1 - Application number: 16/727,245 - Filed: 2019-12-26 - Published: 2020-12-24 - Earliest claimed: 2019-06-20 - Assignees: Au Optronics Corporation - Applicants: AU Optronics Corporation - Inventors: Ya-Ting LIN; Chung-Hung CHEN - Web page: https://patentgrep.com/patent/US20200402437A1 ## CPC - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G11C 19/28: using semiconductor elements (G11C19/14, G11C19/36 take precedence) - H02M 3/07: using capacitors charged and discharged alternately by semiconductor devices with control electrode {, e.g. charge pumps} - H03K 3/356113: {using additional transistors in the input circuit} - H03K 3/35613: {the input circuit having a differential configuration} - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G 2310/067: Special waveforms for scanning, where no circuit details of the gate driver are given - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2330/02: Details of power systems and of start or stop of display operation - G09G 2330/028: Generation of voltages supplied to electrode drivers in a matrix display other than LCD - H04B 5/266: {One coil at each side, e.g. with primary and secondary coils} - 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) - G11C: STATIC STORES (semiconductor memory devices H10B) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H04B: TRANSMISSION ## Abstract A display system includes a pixel array, an antenna, a reader circuit, and a gate driver circuit. The antenna is configured to transmit a radio frequency (RF) signal in response to a wireless communication. The reader circuit is coupled to the antenna and is configured to receive the RF signal. The gate driver circuit is coupled to the reader circuit and the pixel array. The reader circuit is further configured to generate a clock signal according to the RF signal and transmit the clock signal to the gate drive circuit. The gate driver circuit is configured to generate scanning signals according to the clock signal and transmit the scanning signals to the pixel array. ## Claims ### Claim 1 A display system, comprising a display device, wherein the display device comprises: a pixel array; an antenna configured to transmit a radio frequency (RF) signal in response to a wireless communication; a reader circuit coupled to the antenna, and configured to receive the RF signal; and a gate driver circuit coupled to the reader circuit and the pixel array, wherein the reader circuit is further configured to generate a clock signal according to the RF signal and transmit the clock signal to the gate drive circuit, wherein the gate driver circuit is configured to generate a plurality of scanning signals according to the clock signal and transmit the plurality of scanning signals to the pixel array. ### Claim 2 (depends on 1) The display system of claim 1, further comprising: a circuit device coupled to the display device, wherein the circuit device comprises a driver circuit, wherein the antenna responds to the wireless communication, the driver circuit is configured to provide the RF signal to the antenna, in order to make the antenna transmit the RF signal to the reader circuit. ### Claim 3 (depends on 1) The display system of claim 1, wherein the reader circuit comprises: a level shift circuit configured to output the clock signal according to the RF signal. ### Claim 4 (depends on 1) The display system of claim 1, wherein the gate driver circuit comprises a plurality of shift registers, wherein each of the plurality of shift registers is configured to receive the clock signal, and configured to generate a corresponding scanning signal of the plurality of scanning signals according to the clock signal to drive the pixel array. ### Claim 5 A display system, comprising: a pixel array; a reader circuit configured to receive a radio frequency (RF) signal to generate a first control voltage and a second control voltage; and a gate driver circuit coupled to the pixel array and the reader circuit, configured to receive the first control voltage and the second control voltage, and configured to generate a scanning signal according to the first control voltage and the second control voltage to control the pixel array, wherein the pixel array, the reader circuit, and the gate driver circuit are implemented on a display device of the display system. ### Claim 6 (depends on 5) The display system of claim 5, further comprising: an antenna coupled to the reader circuit, configured to sense a near-filed communication (NFC) to transmit the RF signal to the reader circuit, wherein the antenna is implemented on the display device. ### Claim 7 (depends on 6) The display system of claim 6, further comprising: a control circuit implemented on a circuit device, coupled to the display device, wherein the control circuit comprises a rectifier, when the antenna senses the NFC, the rectifier is configured to rectify the RF signal and transmit the rectified RF signal to the reader circuit through the antenna. ### Claim 8 (depends on 5) The display system of claim 5, wherein the reader circuit comprises: a charge pump circuit configured to receive the RF signal, to generate the first control voltage according to a positive part of the RF signal, and to generate the second control voltage according to a negative part of the RF signal, wherein the first control voltage is larger than the second control voltage. ### Claim 9 (depends on 5) The display system of claim 5, wherein the gate driver circuit comprises a multi-stage shift registers configured to receive the first control voltage and the second control voltage, the multi-stage shift registers is further configured to receive a clock signal and to generate the scanning signal according to the clock signal, the first control voltage, and the second control voltage.