# US 12,181,763 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,763 B2 - Document ID: US12181763B2 - Status: Granted - Kind: B2 - Application number: 17/843,130 - Filed: 2022-06-17 - Published: 2022-12-22 - Granted: 2024-12-31 - Earliest claimed: 2021-06-22 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Yoshitaka Ozeki; Gen Koide - Web page: https://patentgrep.com/patent/US12181763B2 ## CPC - G02F 1/136213: {Storage capacitors associated with the pixel electrode} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - H10D 30/6723: {having light shields} - H10D 30/6755: {Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate} - H10D 86/423: {comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO} - 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 - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - 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) - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract A display device includes: a first transistor provided with an oxide semiconductor layer, a first gate electrode facing the oxide semiconductor layer and a first gate insulating layer between the oxide semiconductor layer and the first gate electrode; a first transparent conductive layer above the first transistor; a second transparent conductive layer above the first transparent conductive layer, the second transparent conductive layer being isolated from the first transparent conductive layer and facing the first transparent conductive layer; and a third transparent conductive layer above the second transparent conductive layer, the third transparent conductive layer being isolated from the second transparent conductive layer, being connected to the first transparent conductive layer and facing the second transparent conductive layer. ## Claims ### Claim 1 A display device comprising: a first transistor provided with an oxide semiconductor layer, a first gate electrode facing the oxide semiconductor layer and a first gate insulating layer between the oxide semiconductor layer and the first gate electrode; a first transparent conductive layer above the first transistor; a second transparent conductive layer above the first transparent conductive layer, the second transparent conductive layer being isolated from the first transparent conductive layer, a main surface of the second transparent conductive layer overlapping the first transparent conductive layer in a plan view; a third transparent conductive layer above the second transparent conductive layer, the third transparent conductive layer being isolated from the second transparent conductive layer, being connected to the first transparent conductive layer and facing the second transparent conductive layer; and a light-shielding layer provided above the first transistor so as to define each of a plurality of pixels, wherein the first transparent conductive layer and the second transparent conductive layer overlap and the second transparent conductive layer and the third transparent conductive layer overlap in an area not overlapping the light-shielding layer in a plan view. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the first transparent conductive layer is connected to the first transistor. ### Claim 3 (depends on 2) The display device according to claim 2, wherein the second transparent conductive layer is provided in common to a plurality of pixels. ### Claim 4 (depends on 3) The display device according to claim 3, further comprising a fourth transparent conductive layer including a first portion and a second portion, wherein the first portion overlaps the first gate electrode and the oxide semiconductor in a plan view, the second portion is in contact with the oxide semiconductor layer in a first contact area, the first contact area does not overlap the first gate electrode in a plan view, and the first transparent conductive layer is in contact with the fourth transparent conductive layer in a second contact area overlapping the first gate electrode in a plan view. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the third transparent conductive layer is in contact with the first transparent conductive layer in a third contact area not overlapping the light-shielding layer in a plan view. ### Claim 6 (depends on 1) The display device according to claim 1, further comprising: a first dielectric body between the first transparent conductive layer and the second transparent conductive layer; and a second dielectric body between the second transparent conductive layer and the third transparent conductive layer. ### Claim 7 A display device comprising: a first transistor provided with an oxide semiconductor layer, a first gate electrode facing the oxide semiconductor layer and a first gate insulating layer between the oxide semiconductor layer and the first gate electrode; a first transparent conductive layer above the first transistor; a second transparent conductive layer above the first transparent conductive layer, the second transparent conductive layer being isolated from the first transparent conductive layer, a main surface of the second transparent conductive layer overlapping the first transparent conductive layer in a translucent area of a pixel in a plan view; a third transparent conductive layer above the second transparent conductive layer, the third transparent conductive layer being isolated from the second transparent conductive layer, being connected to the first transparent conductive layer and overlapping the second transparent conductive layer in the translucent area; and a light-shielding layer above the first transistor, the light-shielding layer being provided in common to a plurality of pixels and having an opening corresponding to the translucent area, wherein the first transparent conductive layer and the second transparent conductive layer overlap and the second transparent conductive layer and the third transparent conductive layer overlap in the translucent area. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the first transparent conductive layer is connected to the first transistor. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the second transparent conductive layer is provided in common to the plurality of pixels. ### Claim 10 (depends on 9) The display device according to claim 9, further comprising a fourth transparent conductive layer including a first portion and a second portion, wherein the first portion overlaps the first gate electrode and the oxide semiconductor in a plan view, the second portion is in contact with the oxide semiconductor layer in a first contact area, the first contact area does not overlap the first gate electrode in a plan view, and the first transparent conductive layer is in contact with the fourth transparent conductive layer in the translucent area. ### Claim 11 (depends on 7) The display device according to claim 7, wherein the third transparent conductive layer is in contact with the first transparent conductive layer in a third contact area included in the translucent area. ### Claim 12 (depends on 7) The display device according to claim 7, further comprising: a first dielectric body between the first transparent conductive layer and the second transparent conductive layer; and a second dielectric body between the second transparent conductive layer and the third transparent conductive layer. ### Claim 13 (depends on 1) The display device according to claim 1, further comprising: a second transistor including a semiconductor layer, a second gate electrode facing the semiconductor layer and a second gate insulating layer between the semiconductor layer and the second gate electrode; and a first insulating layer above the semiconductor layer, wherein the first insulating layer is continuous without passing an interface with the first gate insulating layer. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the first transistor is included in a pixel circuit provided in a pixel, and the second transistor is included in a driver circuit configured to drive the pixel circuit. ### Claim 15 (depends on 7) The display device according to claim 7, further comprising: a second transistor including a semiconductor layer, a second gate electrode facing the semiconductor layer and a second gate insulating layer between the semiconductor layer and the second gate electrode; and a first insulating layer above the semiconductor layer, wherein the first insulating layer is continuous without passing an interface with the first gate insulating layer. ### Claim 16 (depends on 15) The display device according to claim 15, wherein the first transistor is included in a pixel circuit provided in a pixel, and the second transistor is included in a driver circuit configured to drive the pixel circuit. ### Claim 17 A display device comprising: a first transistor provided with an oxide semiconductor layer, a first gate electrode facing the oxide semiconductor layer and a first gate insulating layer between the oxide semiconductor layer and the first gate electrode; a first transparent conductive layer above the first transistor; a second transparent conductive layer above the first transparent conductive layer, the second transparent conductive layer being isolated from the first transparent conductive layer, a main surface of the second transparent conductive layer overlapping the first transparent conductive layer in a plan view; a third transparent conductive layer above the second transparent conductive layer, the third transparent conductive layer being isolated from the second transparent conductive layer, being connected to the first transparent conductive layer and facing the second transparent conductive layer; a first dielectric body between the first transparent conductive layer and the second transparent conductive layer; and a second dielectric body between the second transparent conductive layer and the third transparent conductive layer.