# US 10,481,448 B2 · 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 10,481,448 B2 - Document ID: US10481448B2 - Status: Granted - Kind: B2 - Application number: 15/350,498 - Filed: 2016-11-14 - Published: 2017-05-18 - Granted: 2019-11-19 - Earliest claimed: 2015-11-17 - Assignees: HannStar Display (Nanjing) Corporation; Hannstar Display Corp. - Applicants: HannStar Display (Nanjing) Corporation; Hannstar Display Corporation - Inventors: Chia-Hua Yu; Sung-Chun Lin; Hsuan-Chen Liu; Chien-Ting Chan - Web page: https://patentgrep.com/patent/US10481448B2 ## CPC - G02F 1/136204: {Arrangements to prevent high voltage or static electricity failures} - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G11C 19/28: using semiconductor elements (G11C19/14, G11C19/36 take precedence) - G11C 19/287: {Organisation of a multiplicity of shift registers} - G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)} - G09G 3/3677: {suitable for active matrices only} - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2330/04: Display protection - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - 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 liquid crystal display device includes a plurality of pixel units, an electrode line surrounding the pixel units, at least one gate driver coupled with the pixel units via a plurality of gate lines, and at least one electrostatic discharge protection circuit coupled with the at least one gate driver and the electrode line. ## Claims ### Claim 1 A liquid crystal display device, comprising: a plurality of pixel units; a first electrode line, wherein the first electrode line is an enclosed conductive ring surrounding the pixel units; a gate driver coupled with at least some of the pixel units via a plurality of gate lines, wherein the gate driver includes a plurality of signal lines and a plurality of shift registers coupled between the signal lines and the plurality of gate lines, and a plurality of control signals are transmitted to the shift registers through the signal lines; another gate driver coupled with at least some of the pixel units, wherein the gate driver and the another gate driver are respectively disposed at two opposite sides of an active region of the liquid crystal display device; an electrostatic discharge protection circuit coupled with the gate driver; another electrostatic discharge protection circuit coupled with the another gate driver, wherein the another electrostatic discharge protection circuit is electrically connected to the first electrode line; a second electrode line, wherein the second electrode line is a non-enclosed conductive ring surrounding the first electrode line, and the gate driver is disposed between the first electrode line and the second electrode line; and a conductive line, wherein the first electrode line and the second electrode line are electrically connected together through the conductive line; wherein a common voltage is applied to the first electrode line and the second electrode line, and the electrostatic discharge protection circuit is electrically connected to the signal lines and the first electrode line. ### Claim 2 (depends on 1) The liquid crystal display device of claim 1, wherein the control signals include at least one clock signal. ### Claim 3 (depends on 1) The liquid crystal display device of claim 1, further comprising: a controller coupled with the gate driver; wherein the controller transmits the control signals to the signal lines. ### Claim 4 (depends on 1) The liquid crystal display device of claim 1, wherein the electrostatic discharge protection circuit comprises at least one electrostatic discharge protection device, and each of the at least one electrostatic discharge protection device comprises: a first transistor having a first gate, a first source and a first drain; and a second transistor having a second gate, a second source and a second drain; wherein the first gate, one of the first drain and the first source and one of the second drain and the second source are electrically connected together and are electrically connected to one of the signal lines; and the second gate, the other one of the second drain and the second source and the other one of the first drain and the first source are electrically connected together and are electrically connected to the first electrode line. ### Claim 5 (depends on 1) The liquid crystal display device of claim 1, wherein the electrostatic discharge protection circuit comprises at least one electrostatic discharge protection device, and each of the at least one electrostatic discharge protection device comprises: a first transistor having a first gate, a first source and a first drain; a second transistor having a second gate, a second source and a second drain; and a third transistor having a third gate, a third source and a third drain; wherein the first gate, one of the first drain and the first source and one of the third drain and the third source are electrically connected together and are electrically connected to one of the signal lines; the second gate, one of the second drain and the second source, and the other one of the third drain and the third source are electrically connected together and are electrically connected to the first electrode line; and the third gate, the other one of the first drain and the first source and the other one of the second drain and the second source are electrically connected together. ### Claim 6 (depends on 1) The liquid crystal display device of claim 1, wherein each of the shift registers includes a pull-up unit, and the pull-up unit receives a clock signal from one of the signal lines and outputs a scan signal to one of the gate lines. ### Claim 7 A liquid crystal display device, comprising: a plurality of pixel units; a first electrode line, wherein the first electrode line is an enclosed conductive ring surrounding the pixel units; a gate driver coupled with at least some of the pixel units via a plurality of gate lines, wherein the gate driver includes a plurality of signal lines and a plurality of shift registers coupled between the signals lines and the gate lines, and a plurality of control signals are transmitted to the shift registers through the signal lines; a first electrostatic discharge protection circuit coupled with a front end of the gate driver; a second electrode line, wherein the second electrode line is a non-enclosed conductive ring surrounding the first electrode line, and the gate driver is disposed between the first electrode line and the second electrode line; another gate driver coupled with at least some of the pixel units, wherein the gate driver and the another gate driver are respectively disposed at two opposite sides of an active region of the liquid crystal display device; another first electrostatic discharge protection circuit coupled with a front end of the another gate driver, wherein the another first electrostatic discharge protection circuit is electrically connected to the first electrode line; a second electrostatic discharge protection circuit coupled with a back end of the gate driver; another second electrostatic discharge protection circuit coupled with a back end of the another gate driver, wherein the another second electrostatic discharge protection circuit is electrically connected to the second electrode line; and a conductive line, wherein the first electrode line and the second electrode line are electrically connected together through the conductive line; wherein a common voltage is applied to the first electrode line and the second electrode line, the first electrostatic discharge protection circuit is electrically connected to the signal lines and the first electrode line, and the second electrostatic discharge protection circuit is electrically connected to the signal lines and the second electrode line. ### Claim 8 (depends on 7) The liquid crystal display device of claim 7, wherein the control signals includes at least one clock signal. ### Claim 9 (depends on 7) The liquid crystal display device of claim 7, further comprising: a controller coupled with the gate driver, wherein the controller transmits the control signals to the signal lines. ### Claim 10 (depends on 7) The liquid crystal display device of claim 7, wherein the first electrostatic discharge protection circuit comprises at least one electrostatic discharge protection device, and each of the at least one electrostatic discharge protection device comprises: a first transistor having a first gate, a first source and a first drain; and a second transistor having a second gate, a second source and a second drain; wherein the first gate, one of the first drain and the first source and one of the second drain and the second source are electrically connected together and are electrically connected to one of the signal lines; and the second gate, the other one of the second drain and the second source and the other one of the first drain and the first source are electrically connected together and are electrically connected to the first electrode line. ### Claim 11 (depends on 7) The liquid crystal display device of claim 7, wherein the first electrostatic discharge protection circuit comprises at least one electrostatic discharge protection device and each of the at least one electrostatic discharge protection device comprises: a first transistor having a first gate, a first source and a first drain; a second transistor having a second gate, a second source and a second drain; and a third transistor having a third gate, a third source and a third drain; wherein the first gate, one of the first drain and the first source and one of the third drain and the third source are electrically connected together and are electrically connected to one of the signal lines; the second gate, one of the second drain and the second source, and the other one of the third drain and the third source are electrically connected together and are electrically connected to the first electrode line; and the third gate, the other one of the first drain and the first source and the other one of the second drain and the second source are electrically connected together.