# US 11,443,685 B1 · Display device, driver chip, and displaying method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,685 B1 - Document ID: US11443685B1 - Status: Granted - Kind: B1 - Application number: 17/451,488 - Filed: 2021-10-19 - Published: 2022-09-01 - Granted: 2022-09-13 - Earliest claimed: 2021-02-26 - Assignees: Novatek Microelectronics Corp. - Applicants: NOVATEK Microelectronics Corp. - Inventors: Tso-Hua Chien; Huang-Chin Tang - Web page: https://patentgrep.com/patent/US11443685B1 ## CPC - G09G 3/2096: {Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167)} - 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 - G09G 2330/08: Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared - 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 A display device includes a processor circuit, a driver circuit, and a display panel. The driver circuit is coupled to the processor circuit to detect whether there is abnormal transmission between the processor circuit and the driver circuit. The display panel is coupled to the driver circuit. The display panel includes a display array and a shift register circuit. The display array is to display an image. The shift register circuit is coupled to the display array. When there is the abnormal transmission in a first display period of a first frame, the driver circuit outputs a control signal having a disable level in the first display period to the shift register circuit to control the shift register circuit not to operate in order to stop updating the image. ## Claims ### Claim 1 A display device, comprising: a processor circuit; a driver circuit coupled to the processor circuit to detect whether there is abnormal transmission between the processor circuit and the driver circuit; and a display panel coupled to the driver circuit and comprising: a display array to display an image; and a shift register circuit coupled to the display array, wherein when there is the abnormal transmission in a first display period of a first frame, the driver circuit outputs a control signal having a disable level in the first display period to the shift register circuit to control the shift register circuit not to operate in order to stop updating the image, wherein the driver circuit comprises: a gate controller coupled to the shift register circuit to output the control signal to the shift register circuit; and a timing controller coupled to the gate controller to control the gate controller. ### Claim 2 (depends on 1) The display device of claim 1, wherein the gate controller is further to output a gate dock signal to the shift register circuit, wherein after an error timing point, the gate dock signal comprises an enable level and a disable level. ### Claim 3 (depends on 1) The display device of claim 1, wherein the gate controller is further to output a gate dock signal to the shift register circuit, wherein after an error timing point, a level of the gate dock signal is a disable level. ### Claim 4 (depends on 1) The display device of claim 1, wherein the driver circuit further comprises: a transmission interface coupled to the processor circuit to receive image data from the processor circuit; and a source controller coupled to the display array to output a data signal to the display array according to the image data. ### Claim 5 (depends on 1) The display device of claim 1, wherein the control signal comprises a disable level between the first display period and a second display period of a second frame to control the shift register circuit not to operate. ### Claim 6 (depends on 5) The display device of claim 5, wherein the driver circuit is further to control the shift register circuit to operate again in the second display period. ### Claim 7 A driver chip, comprising: a driver circuit to detect whether there is abnormal transmission between the driver circuit and a processor circuit in a display device; and a first pin, wherein the driver circuit is to output a control signal to a shift register circuit in the display device through the first pin, wherein when there is the abnormal transmission in a first display period of a first frame, the control signal comprises a disable level in the first display period to control the shift register circuit not to operate, wherein the driver circuit comprises: a gate controller coupled to the shift register circuit to output the control signal to the shift register circuit through the first pin; and a timing controller coupled to the gate controller to control the gate controller. ### Claim 8 (depends on 7) The driver chip of claim 7, wherein the driver chip further comprises: a second pin, wherein the gate controller is further to output a gate dock signal to the shift register circuit through the second pin, wherein after an error timing point, the gate dock signal comprises an enable level and a disable level. ### Claim 9 (depends on 7) The driver chip of claim 7, wherein the driver chip further comprises: a second pin, wherein the gate controller is further to output a gate dock signal to the shift register circuit through the second pin, wherein after an error timing point, a level of the gate dock signal is a disable level. ### Claim 10 (depends on 7) The driver chip of claim 7, wherein the driver circuit further comprises: a transmission interface to receive image data from the processor circuit; and a source controller to output a data signal to the display device according to the image data. ### Claim 11 (depends on 7) The driver chip of claim 7, wherein the control signal comprises a disable level between the first display period and a second display period of a second frame to control the shift register circuit not to operate. ### Claim 12 (depends on 11) The driver chip of claim 11, wherein the driver circuit is further to control the shift register circuit to operate again in the second display period. ### Claim 13 A displaying method, comprising: detecting, by a driver circuit, whether there is abnormal transmission between a processor circuit and the driver circuit; controlling, by a timing controller of the driver circuit, a gate controller of the driver circuit; and when there is the abnormal transmission in a first display period of a first frame, outputting, by the gate controller of the driver circuit, a control signal to a shift register circuit, wherein the control signal comprises a disable level in the first display period to control the shift register circuit not to operate in order to stop updating an image on a display array. ### Claim 14 (depends on 13) The displaying method of claim 13, further comprising: outputting, by the gate controller of the driver circuit, a gate dock signal to the shift register circuit, wherein after an error timing point, the gate dock signal comprises an enable level and a disable level. ### Claim 15 (depends on 13) The displaying method of claim 13, further comprising: outputting, by the gate controller of the driver circuit, a gate dock signal to the shift register circuit, wherein after an error timing point, a level of the gate dock signal is a disable level. ### Claim 16 (depends on 13) The displaying method of claim 13, further comprising: receiving, by a transmission interface of the driver circuit, image data from the processor circuit; and outputting, by a source controller of the driver circuit, a data signal to the display array according to the image data. ### Claim 17 (depends on 13) The displaying method of claim 13, wherein the control signal comprises a disable level between the first display period and a second display period of a second frame to control the shift register circuit not to operate. ### Claim 18 (depends on 17) The displaying method of claim 17, further comprising: controlling, by the driver circuit, the shift register circuit to operate again in the second display period.