# US 2021/0240221 A1 · Electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240221 A1 - Document ID: US20210240221A1 - Status: Published application - Kind: A1 - Application number: 17/233,669 - Filed: 2021-04-19 - Published: 2021-08-05 - Earliest claimed: 2014-10-24 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Hideaki KUWABARA; Masaaki HIROKI - Web page: https://patentgrep.com/patent/US20210240221A1 ## CPC - G02F 1/13336: {Combining plural substrates to produce large-area displays, e.g. tiled displays} - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/13452: {Conductors connecting driver circuitry and terminals of panels} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 1/163: Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor - G06F 1/163: {Wearable computers, e.g. on a belt} - G06F 1/1635: {Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter} - G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)} - G06F 1/1654: {the display being detachable, e.g. for remote use} - Y02E 60/10: Energy storage using batteries - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A novel electronic device is provided. Alternatively an electronic device of a novel embodiment is provided. An electronic device includes a ring portion and a display portion. The display portion is flexible. The display portion has a top surface and a first side surface in contact with at least one side of the top surface. The first side surface has a curved surface. The top surface includes a first display region. The first side surface includes a second display region. The first display region and the second display region are continuously provided. The electronic device is mounted such that the ring portion is in contact with a user's finger. ## Claims ### Claim 1 A display device comprising; a pixel portion including a plurality of pixels; and a driver circuit, wherein the pixel portion and the driver circuit are positioned over a flexible substrate, wherein the pixel portion comprises a first transistor, wherein the driver circuit comprises a second transistor, wherein the first transistor and the second transistor are in contact with the same insulating film, wherein the pixel portion comprises a notch portion in a corner when the flexible substrate is in a flat state, and wherein the driver circuit supplies a signal to the pixel portion through a wiring positioned in the notch portion. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the wiring comprises a region where the wiring extends along a first side of the notch portion and a region where the wiring extends along a second side of the notch portion. ### Claim 3 A wearable ring-type electronic device comprising: a ring-type housing; a display portion comprising a first curved surface along a second curved surface of the ring-type housing; a driver circuit; and a secondary battery overlapping with the display portion, wherein the display portion is an active matrix display device including an organic light-emitting element, wherein the display portion comprises a pixel portion including a plurality of pixels, wherein the pixel portion comprises a first transistor, wherein the driver circuit comprises a second transistor, wherein the first transistor and the second transistor are in contact with the same insulating film over a flexible substrate, wherein the pixel portion comprises a notch portion in a corner when the flexible substrate is in a flat state, and wherein the driver circuit supplies a signal to the pixel portion through a wiring positioned in the notch portion. ### Claim 4 (depends on 3) The wearable ring-type electronic device according to claim 3, wherein the wiring comprises a region where the wiring extends along a first side of the notch portion and a region where the wiring extends along a second side of the notch portion. ### Claim 5 An electronic device comprising: a display portion; a driver circuit; and a secondary battery overlapping with the display portion, wherein the display portion is an active matrix display device including an organic light-emitting element, wherein the display portion comprises a pixel portion including a plurality of pixels, wherein the pixel portion comprises a first transistor, wherein the driver circuit comprises a second transistor, wherein the first transistor and the second transistor are in contact with the same insulating film over a flexible substrate, wherein the pixel portion comprises a notch portion in a corner when the flexible substrate is in a flat state, and wherein the driver circuit supplies a signal to the pixel portion through a wiring positioned in the notch portion. ### Claim 6 (depends on 5) The electronic device according to claim 5, wherein the wiring comprises a region where the wiring extends along a first side of the notch portion and a region where the wiring extends along a second side of the notch portion.