# US 9,519,389 B2 · Liquid crystal display device with touch panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,389 B2 - Document ID: US9519389B2 - Status: Granted - Kind: B2 - Application number: 14/463,710 - Filed: 2014-08-20 - Published: 2015-02-26 - Granted: 2016-12-13 - Earliest claimed: 2013-08-21 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Motoharu Miyamoto; Takahiro Ochiai; Yoshinori Aoki; Hideo Sato - Web page: https://patentgrep.com/patent/US9519389B2 ## 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} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F 3/04184: {Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G09G 2230/00: Details of flat display driving waveforms - G09G 2300/023: Display panel composed of stacked panels - G09G 2300/0426: Layout of electrodes and connections - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - G09G 2310/062: Waveforms for resetting a plurality of scan lines at a time - G09G 2310/063: Waveforms for resetting the whole screen at once - 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) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A display device with a touch panel includes: a plurality of scanning signal lines, which are aligned in a rectangular display region and in parallel with a side of the rectangular display region, to which an active potential as a potential for making a pixel transistor conductive is applied; drive pulse output circuits which sequentially apply the active potential to the scanning signal lines in the display region; a clock signal output circuit which applies a first clock signal as a clock signal for the drive pulse output circuits to a first clock signal line and stops the application of the first clock signal to the first clock signal line for a stop period during which the sequential application of the active potential is stopped in the middle thereof; and a touch panel control unit which detects contact with a display surface during the stop period. ## Claims ### Claim 1 A display device with a touch panel comprising: a plurality of scanning signal lines, which are aligned in a rectangular display region and in parallel with a side of the rectangular display region, to which an active potential as a potential for making a pixel transistor conductive is applied; at least one drive pulse output circuit which sequentially applies the active potential to the plurality of scanning signal lines in the display region; a clock signal output circuit which applies a first clock signal as a clock signal for the drive pulse output circuits to a first clock signal line and stops the application of the first clock signal to the first clock signal line for a stop period during which the sequential application of the active potential to the plurality of scanning signal lines is stopped in the middle thereof; a touch panel control unit which detects contact with a display surface during the stop period; and at least one reset start signal generation circuit which includes a transfer circuit block, a reset circuit block and a start circuit block, and generates and outputs a reset signal for resetting the finally applied active potential to a non-active potential when the sequential application of the active potential by the drive pulse output circuit is stopped in the middle and a start signal for restarting the stopped sequential application of the active potential from the middle, wherein the transfer circuit block includes a circuit to be used by the respective circuit blocks in the reset start signal generation circuit to output a transfer signal, wherein the reset circuit block includes the circuit of the transfer circuit block, and generates and outputs the reset signal, wherein the start circuit block includes the circuit of the transfer circuit block, and generates and outputs the start signal, wherein the clock signal output circuit supplies a second clock signal, which is a clock signal with a lower frequency than that of the first clock signal, to the reset start signal generation circuit, and wherein the respective circuit blocks in the reset start signal generation circuit are operated based on the second clock. ### Claim 2 (depends on 1) The display device with a touch panel according to claim 1, wherein the drive pulse output circuit is arranged on the same substrate as a substrate, on which the plurality of scanning signal lines are formed, on an outer side of the rectangular display region, and wherein the reset start signal generation circuits are arranged between the driving pulse output circuit and an edge of the substrate. ### Claim 3 (depends on 1) The display device with a touch panel according to claim 1, wherein the at least one drive pulse output circuit comprises a plurality of drive pulse output circuits, wherein the at least one reset start signal generation circuit comprises a plurality of reset start signal generation circuits, wherein the drive pulse output circuits are respectively arranged at two locations outside facing sides of the rectangular display region and sequentially apply the active potential to odd-numbered scanning signal lines and even-numbered scanning signal lines, respectively, and wherein the reset start signal generation circuits are respectively arranged on further outside than the drive pulse output circuits arranged at the two locations outside the facing sides and supply the reset signal and the start signal to the drive pulse output circuits at the two locations, respectively. ### Claim 4 (depends on 1) The display device with a touch panel according to claim 1, wherein the reset start signal generation circuit includes a multi-stage circuit block as a circuit for sequentially outputting the active potential, and a circuit block corresponding to a part of the stages outputs the reset signal or the start signal to the scanning signal lines. ### Claim 5 (depends on 1) The display device with a touch panel according to claim 1, wherein the display device is a liquid crystal display device which controls an amount of transmitted light by controlling orientation of liquid crystal compositions by an electric field formed between a pixel electrode and a common electrode, and wherein the common electrode is divided into a plurality of electrodes, and at least a part of the plurality of electrodes is one of a pair of electrodes which forms capacity for detecting the contact.