# US 11,908,409 B2 · Display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,409 B2 - Document ID: US11908409B2 - Status: Granted - Kind: B2 - Application number: 18/148,002 - Filed: 2022-12-29 - Published: 2023-05-04 - Granted: 2024-02-20 - Earliest claimed: 2012-10-19 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Kazuyoshi Omata; Hiroyuki Kimura; Makoto Shibusawa; Hiroshi Tabatake - Web page: https://patentgrep.com/patent/US11908409B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H05B 45/60: Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED] - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/1216: {the pixel elements being capacitors} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/325: the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0852: being a dynamic memory with more than one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2310/0262: The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0252: Improving the response speed - G09G 2320/043: Preventing or counteracting the effects of ageing - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/351: {comprising more than three subpixels, e.g. red-green-blue-white [RGBW]} - Y02B 20/30: Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED] - 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) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit. ## Claims ### Claim 1 A display device including a plurality of pixels, the display device comprising: a semiconductor layer; a first insulation layer on the semiconductor layer; a first conductive layer on the first insulation layer; a second insulation layer on the first insulation layer and the first conductive layer; a second conductive layer on the second insulation layer; a third insulation layer on the second insulation layer and the second conductive layer; a third conductive layer on the third insulation layer; and a partition insulation layer on the third insulation layer and the third conductive layer; each of the plurality of pixels comprising: a display element electrically connected to and between a first conductor and a second conductor; and a drive transistor electrically connected to and between the first conductor and the display element and configured to control a current value from the first conductor to the display element, wherein the first conductor is electrically connected to a high potential power line, the second conductor is electrically connected to a low potential power line, one of electrodes of the display element is formed in the third conductive layer, a channel of the drive transistor is formed in the semiconductor layer, a gate of the drive transistor is formed in the first conductive layer, the second conductive layer extends so as not to contact the gate, and not to contact a source or a drain of the drive transistor, the one of electrodes of the display element, the second conductive layer, and the gate of the drive transistor overlap with each other in a plane view, the partition insulation layer covers an edge of the one of electrodes of the display element, and the partition insulation layer includes an opening exposing a part of an upper surface of the one of electrodes of the display element. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the opening of the partition insulation layer, the second conductive layer, and the gate of the drive transistor overlap with each other in the plane view. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the second conductive layer extends between adjacent two pixels in the plurality of pixels continuously. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising: a video signal line, wherein the second conductive layer intersects the video signal line. ### Claim 5 (depends on 1) The display device according to claim 1, further comprising: an output switch between the first conductor and the drive transistor, wherein the output switch is configured to select to supply or not to supply a current from the first conductor to the display element, and the output switch is configured to be controlled by a signal different from that of the drive transistor. ### Claim 6 (depends on 5) The display device according to claim 5, wherein both of the channel of the drive transistor and a channel of the output switch are formed of the semiconductor layer continuously. ### Claim 7 A display device including a plurality of pixels, the display device comprising: a semiconductor layer; a first insulation layer on the semiconductor layer; a first conductive layer on the first insulation layer; a second insulation layer on the first insulation layer and the first conductive layer; a second conductive layer on the second insulation layer; a third insulation layer on the second insulation layer and the second conductive layer; and a third conductive layer on the third insulation layer, each of the plurality of pixels comprising: a display element electrically connected to and between a first conductor and a second conductor; and a drive transistor electrically connected to and between the first conductor and the display element and configured to control a current value from the first conductor to the display element, wherein the first conductor is electrically connected to a high potential power line, and the second conductor is electrically connected to a low potential power line, one of electrodes of the display element is formed in the third conductive layer, a channel of the drive transistor is formed in the semiconductor layer, a gate of the drive transistor is formed in the first conductive layer, the second conductive layer extends so as not to contact the gate, and not to contact a source or a drain of the drive transistor, the one of electrodes of the display element, the second conductive layer, and the gate of the drive transistor overlap with each other in a plane view, and the second conductive layer extends between adjacent two pixels in the plurality of pixels continuously. ### Claim 8 (depends on 7) The display device according to claim 7, further comprising: a partition insulation layer on the third insulation layer and the third conductive layer; wherein the partition insulation layer includes an opening exposing a part of an upper surface of the one on electrodes of the display element, and the opening of the partition insulation layer, the second conductive layer, and the gate of the drive transistor overlap with each other in the plane view. ### Claim 9 (depends on 7) The display device according to claim 7, further comprising: a video signal line, wherein the second conductive layer intersects the video signal line. ### Claim 10 (depends on 7) The display device according to claim 7, further comprising: an output switch between the first conductor and the drive transistor, wherein the output switch is configured to select to supply or not to supply a current from the first conductor to the display element, and the output switch is configured to be controlled by a signal different from that of the drive transistor. ### Claim 11 (depends on 10) The display device according to claim 10, wherein both of the channel of the drive transistor and a channel of the output switch are formed of the semiconductor layer continuously.