# US 2018/0321531 A1 · Semiconductor device and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0321531 A1 - Document ID: US20180321531A1 - Status: Published application - Kind: A1 - Application number: 16/039,533 - Filed: 2018-07-19 - Published: 2018-11-08 - Earliest claimed: 2014-12-02 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Ryo HATSUMI; Tetsuji ISHITANI - Web page: https://patentgrep.com/patent/US20180321531A1 ## CPC - G02F 1/13338: {Input devices, e.g. touch panels} - H10D 30/6755: {Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate} - H10D 62/80: characterised by the materials - H10D 86/423: {comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10D 86/60: wherein the TFTs are in active matrices - G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)} - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An increase in fabricating cost of a display module including a touch sensor is suppressed. A display device which includes a first substrate, a second substrate, and liquid crystal interposed between the first substrate and the second substrate includes a display portion. The display portion includes a sensor unit and a pixel. The sensor unit includes a first transistor, a first conductive film electrically connected to a gate of the first transistor, and a second conductive film. At least part of the first conductive film overlaps with at least part of the second conductive film. The pixel includes a second transistor, and a pixel electrode electrically connected to the second transistor. At least part of the pixel electrode overlaps with at least part of the first conductive film. ## Claims ### Claim 1 A display device having a display portion comprising: a first substrate; a second substrate; and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the display portion includes a sensor unit and a first pixel, wherein the sensor unit includes a first transistor, a first conductive film electrically connected to a gate of the first transistor, and a second conductive film, wherein the first transistor and the first conductive film are between the first substrate and the liquid crystal layer, wherein the second conductive film overlaps with the first conductive film with the liquid crystal layer positioned therebetween, wherein the first pixel includes a second transistor and a first pixel electrode electrically connected to the second transistor, and wherein at least part of the first pixel electrode overlaps with at least part of the first conductive film. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the gate of the first transistor and a gate of the second transistor are provided over and in contact with a same surface. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the display portion further comprises a second pixel including a second pixel electrode, and wherein the sensor unit overlaps with the first pixel electrode and the second pixel electrode. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the first conductive film comprises a transparent conductive material. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the second conductive film comprises a transparent conductive material. ### Claim 6 (depends on 1) An electronic device comprising the display device according to claim 1. ### Claim 7 A display device having a display portion comprising: a first substrate; a second substrate; and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the display portion includes a sensor unit and a first pixel, wherein the sensor unit includes a first transistor and a first capacitor including a first conductive film and a second conductive film, wherein the first transistor and the first conductive film are provided between the first substrate and the liquid crystal layer, wherein the second conductive film is provided between the liquid crystal layer and the second substrate, wherein the first pixel includes a second transistor and a first pixel electrode electrically connected to the second transistor, and wherein at least part of the pixel electrode overlaps with at least part of the first conductive film. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the gate of the first transistor and a gate of the second transistor are provided over and in contact with a same surface. ### Claim 9 (depends on 7) The display device according to claim 7, wherein the display portion further includes a second pixel including a second pixel electrode, and wherein the sensor unit overlaps with the first pixel electrode and the second pixel electrode. ### Claim 10 (depends on 7) The display device according to claim 7, wherein the first conductive film comprises a transparent conductive material. ### Claim 11 (depends on 7) The display device according to claim 7, wherein the second conductive film comprises a transparent conductive material. ### Claim 12 (depends on 7) An electronic device comprising the display device according to claim 7. ### Claim 13 A display device having a display portion comprising: a first substrate; a first transistor and a second transistor over the first substrate; a first insulating film over the first transistor and the second transistor; a first conductive film on the first insulating film, the first conductive film electrically connected to a gate of the first transistor; a second insulating film over the first insulating film and the first conductive film; a first pixel electrode on the second insulating film, the first pixel electrode electrically connected to the second transistor; a liquid crystal layer over the first pixel electrode; a second conductive film overlapping with the first conductive film with the liquid crystal layer positioned therebetween; and a second substrate over the second conductive film, wherein the display portion includes a first pixel and a sensor unit, wherein the sensor unit includes the first transistor, the first conductive film, and the second conductive film, and wherein the first pixel includes the second transistor, the first conductive film, and the first pixel electrode. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the gate of the first transistor and a gate of the second transistor are provided over and in contact with a same surface. ### Claim 15 (depends on 13) The display device according to claim 13, wherein the display portion further includes a second pixel including a second pixel electrode, and wherein the sensor unit overlaps with the first pixel electrode and the second pixel electrode. ### Claim 16 (depends on 13) The display device according to claim 13, wherein the first conductive film comprises a transparent conductive material. ### Claim 17 (depends on 13) The display device according to claim 13, wherein the second conductive film comprises a transparent conductive material. ### Claim 18 (depends on 13) An electronic device comprising the display device according to claim 13.