# US 10,121,441 B2 · GOA driver circuit and liquid crystal display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,441 B2 - Document ID: US10121441B2 - Status: Granted - Kind: B2 - Application number: 15/323,974 - Filed: 2016-12-20 - Published: 2018-06-28 - Granted: 2018-11-06 - Earliest claimed: 2016-10-18 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Inventors: Xiaowen Lv; Shujhih Chen - Web page: https://patentgrep.com/patent/US10121441B2 ## CPC - G09G 3/3677: {suitable for active matrices only} - G11C 19/28: using semiconductor elements (G11C19/14, G11C19/36 take precedence) - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2300/0426: Layout of electrodes and connections - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - 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) ## Abstract A gate driver on array (GOA) driver circuit and a liquid crystal display are proposed. The GOA driver circuit includes cascaded GOA units. The Nth-stage GOA unit includes a pull-up module, a pull-up control module, a pull-down holding module, a transferring module, and a bootstrap capacitor module. The pull-up module, the pull-down holding module, and the bootstrap capacitor module are electrically connected to an Nth-stage gate signal node Qn and an Nth-stage horizontal scan line Gn, respectively. The pull-up control module and the transferring module are connected to the Nth-stage gate signal node Qn. ## Claims ### Claim 1 A gate driver on array (GOA) driver circuit, comprising a plurality of cascaded GOA units, wherein a gate driver signal is output to an Nth-stage horizontal scan line Gn on a display zone according to an Nth-stage GOA unit output gate driver signal; the Nth-stage GOA unit comprises a pull-up module, a pull-up control module, a pull-down holding module, a transferring module, and a bootstrap capacitor module; the pull-up module, the pull-down holding module, and the bootstrap capacitor module are electrically connected to an Nth-stage gate signal node Qn; the pull-up module, the pull-down holding module, and the bootstrap capacitor module are electrically connected to an Nth-stage horizontal scan line Gn; the pull-up control module and the transferring module are connected to the Nth-stage gate signal node Qn, wherein the pull-down holding module comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a tenth transistor, a sixteenth transistor, and a seventeenth transistor; a gate and a drain of the first transistor and a drain of the second transistor are connected with an Nth-stage low-frequency clock signal LCn; a source of the first transistor, a gate of the second transistor, and a drain of the fourth transistor are connected; a source of the second transistor, a drain of the third transistor, a gate of the fifth transistor, a gate of the seventh transistor all are connected to an Nth-stage common node Pn; a drain of the seventh transistor and a drain of the eighth transistor are connected to the Nth-stage gate signal node Qn; a drain of the fifth transistor and a drain of the tenth transistor both are connected to the Nth-stage horizontal scan line; a source of the third transistor, a source of the fourth transistor, a source of the fifth transistor, a source of the seventh transistor, a source of the eighth transistor, and a source of the tenth transistor all are connected to a low supply voltage source to receive a low supply voltage; a drain of the sixteenth transistor is connected to the Nth-stage common node Pn; a gate of the sixteenth transistor is connected to the low supply voltage source to receive the low supply voltage; a gate of the sixteenth transistor is connected to an (N+1)th-stage gate signal node Qn+1; a drain of the seventeenth transistor, a source of the first transistor, and a gate of the second transistor are connected; a gate of the seventeenth transistor is connected to the low supply voltage source to receive the low supply voltage; the gate of the seventeenth transistor is connected to the (N+1)th-stage gate signal node Qn+1; a gate of the eighth transistor and a gate of the tenth transistor is connected to an (N+1)th-stage common node Pn+1; the Nth-stage low-frequency clock signal LCn received by the Nth-stage GOA unit is inverted to the (N+1)th-stage low-frequency clock signal LCn+1 received by the (N+1)th-stage GOA unit. ### Claim 2 (depends on 1) The GOA driver circuit of claim 1, wherein the pull-down holding module further comprises a sixth transistor and a ninth transistor; a transferring module comprises an eleventh transistor; the sixth transistor and the ninth transistor are connected to a source of the eleventh transistor; a gate of the sixth transistor is connected to the Nth-stage common node Pn; a gate of the ninth transistor is connected to the (N+1)th-stage common node Pn+1; a drain of the eleventh transistor receives a first high-frequency clock signal; a gate of the eleventh transistor is connected to an Nth-stage gate signal node Qn. ### Claim 3 (depends on 2) The GOA driver circuit of claim 2, wherein the pull-up control module comprises a thirteenth transistor, a fourteenth transistor, and a fifteenth transistor; a gate of the thirteenth transistor and a gate of the fourteenth transistor are connected and receive a second high-frequency clock signal XCK; a source of the thirteenth transistor, a drain of the fourteenth transistor, and a drain of the fifteenth transistor are connected; a source of the fifteenth transistor, a drain of the fifth transistor, and a drain of the ninth transistor are connected; a source of the fourteenth transistor is connected to the Nth-stage gate signal node Qn. ### Claim 4 (depends on 3) The GOA driver circuit of claim 3, wherein the low supply voltage comprises a first low supply voltage VSS1 and a second low supply voltage VSS2; a source of the third transistor and a source of the sixteenth transistor receive the second low supply voltage VSS2; the source of the seventh transistor, the source of the sixth transistor, the source of the fifth transistor, the source of the eighth transistor, the source of the ninth transistor, and the source of the tenth transistor all receive the first low supply voltage VSS1; a value of the second low supply voltage VSS2 is smaller than a value of the first low supply voltage VSS1. ### Claim 5 (depends on 4) The GOA driver circuit of claim 4, wherein the pull-up module comprises a twelve transistor; a drain of the twelve transistor receives a first high-level signal; a source of the twelve transistor is connected to the Nth-stage horizontal scan line; a gate of the twelve transistor is connected to the Nth-stage signal. ### Claim 6 (depends on 3) The GOA driver circuit of claim 3, wherein the first high-frequency clock signal is inverted to the second high-frequency clock signal. ### Claim 7 (depends on 6) The GOA driver circuit of claim 6, wherein the first high-frequency clock signal and the second high-frequency clock are received through a first common metallic line and a second common metallic line, respectively. ### Claim 8 (depends on 1) The GOA driver circuit of claim 1, wherein the bootstrap capacitor module comprises a bootstrap capacitor connected between the Nth-stage gate signal node Qn and the Nth-stage horizontal scan line Gn. ### Claim 9 (depends on 1) The GOA driver circuit of claim 1, wherein the Nth-stage low-frequency clock signal LCn is received through a third common metallic line. ### Claim 10 A gate driver on array (GOA) driver circuit, comprising a plurality of cascaded GOA units, wherein a gate driver signal is output to an Nth-stage horizontal scan line Gn on a display zone according to an Nth-stage GOA unit output gate driver signal; the Nth-stage GOA unit comprises a pull-up module, a pull-up control module, a pull-down holding module, a transferring module, and a bootstrap capacitor module; the pull-up module, the pull-down holding module, and the bootstrap capacitor module are electrically connected to an Nth-stage gate signal node Qn; the pull-up module, the pull-down holding module, and the bootstrap capacitor module are electrically connected to an Nth-stage horizontal scan line Gn; the pull-up control module and the transferring module are connected to the Nth-stage gate signal node Qn, wherein the pull-down holding module comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a tenth transistor, a sixteenth transistor, and a seventeenth transistor; a gate and a drain of the first transistor and a drain of the second transistor are connected with an Nth-stage low-frequency clock signal LCn; a source of the first transistor, a gate of the second transistor, and a drain of the fourth transistor are connected; a source of the second transistor, a drain of the third transistor, a gate of the fifth transistor, a gate of the seventh transistor all are connected to an Nth-stage common node Pn; a drain of the seventh transistor and a drain of the eighth transistor are connected to the Nth-stage gate signal node Qn; a drain of the fifth transistor and a drain of the tenth transistor both are connected to the Nth-stage horizontal scan line; a source of the third transistor, a source of the fourth transistor, a source of the fifth transistor, a source of the seventh transistor, a source of the eighth transistor, and a source of the tenth transistor all are connected to a low supply voltage source to receive a low supply voltage; a drain of the sixteenth transistor is connected to the Nth-stage common node Pn; a gate of the sixteenth transistor is connected to the low supply voltage source to receive the low supply voltage; a gate of the sixteenth transistor is connected to an (N+1)th-stage gate signal node Qn+1; a drain of the seventeenth transistor, a source of the first transistor, and a gate of the second transistor are connected; a gate of the seventeenth transistor is connected to the low supply voltage source to receive the low supply voltage; the gate of the seventeenth transistor is connected to the (N+1)th-stage gate signal node Qn+1; a gate of the eighth transistor and a gate of the tenth transistor is connected to an (N+1)th-stage common node Pn+1; the Nth-stage low-frequency clock signal LCn received by the Nth-stage GOA unit is inverted to the (N+1)th-stage low-frequency clock signal LCn+1 received by the (N+1)th-stage GOA unit, wherein the pull-down holding module further comprises a sixth transistor and a ninth transistor; a transferring module comprises an eleventh transistor; the sixth transistor and the ninth transistor are connected to a source of the eleventh transistor; a gate of the sixth transistor is connected to the Nth-stage common node Pn; a gate of the ninth transistor is connected to the (N+1)th-stage common node Pn+1; a drain of the eleventh transistor receives a first high-frequency clock signal; a gate of the eleventh transistor is connected to an Nth-stage gate signal node Qn, wherein the pull-up control module comprises a thirteenth transistor, a fourteenth transistor, and a fifteenth transistor; a gate of the thirteenth transistor and a gate of the fourteenth transistor are connected and receive a second high-frequency clock signal XCK; a source of the thirteenth transistor, a drain of the fourteenth transistor, and a drain of the fifteenth transistor are connected; a source of the fifteenth transistor, a drain of the fifth transistor, and a drain of the ninth transistor are connected; a source of the fourteenth transistor is connected to the Nth-stage gate signal node Qn, wherein the low supply voltage comprises a first low supply voltage VSS I and a second low supply voltage VSS2; a source of the third transistor and a source of the sixteenth transistor receive the second low supply voltage VSS2; the source of the seventh transistor, the source of the sixth transistor, the source of the fifth transistor, the source of the eighth transistor, the source of the ninth transistor, and the source of the tenth transistor all receive the first low supply voltage VSS1; a value of the second low supply voltage VSS2 is smaller than a value of the first low supply voltage VSS1, wherein the pull-up module comprises a twelve transistor; a drain of the twelve transistor receives a first high-level signal; a source of the twelve transistor is connected to the Nth-stage horizontal scan line; a gate of the twelve transistor is connected to the Nth-stage signal, wherein the first high-frequency clock signal is inverted to the second high-frequency clock signal, wherein the first high-frequency clock signal and the second high-frequency clock are received through a first common metallic line and a second common metallic line, respectively, wherein the bootstrap capacitor module comprises a bootstrap capacitor connected between the Nth-stage gate signal node Qn and the Nth-stage horizontal scan line Gn, and wherein the Nth-stage low-frequency clock signal LCn is received through a third common metallic line. ### Claim 11 (depends on 1) A liquid crystal display comprising a gate driver on array (GOA) driver circuit as claimed in claim 1. ### Claim 12 (depends on 10) A liquid crystal display comprising a gate driver on array (GOA) driver circuit as claimed in claim 10.