# US 10,119,683 B2 · Light-emitting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,683 B2 - Document ID: US10119683B2 - Status: Granted - Kind: B2 - Application number: 15/949,471 - Filed: 2018-04-10 - Published: 2018-08-16 - Granted: 2018-11-06 - Earliest claimed: 2013-07-12 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Yoshiharu Hirakata; Akio Endo - Web page: https://patentgrep.com/patent/US10119683B2 ## CPC - F21V 15/012: {Housings with variable shape or dimensions, e.g. by means of elastically deformable materials or by movement of parts forming telescopic extensions of the housing body} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/569: {of the traffic information} - F21Y 2105/00: Planar light sources - F21Y 2115/20: Electroluminescent [EL] light sources - H10K 59/1201: {Manufacture or treatment} - H10K 59/1213: {the pixel elements being TFTs} - H10K 59/40: OLEDs integrated with touch screens - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A light-emitting device includes a strip-like high flexibility region and a strip-like low flexibility region arranged alternately in a direction. The high flexibility region includes a flexible light-emitting panel. The low flexibility region includes the light-emitting panel and a support panel having a lower flexibility than that of the light-emitting panel and overlapping with the light-emitting panel. It is preferable that the light-emitting panel include an external connection electrode and that a length in the direction of a low flexibility region A that overlaps with the external connection electrode be longer than a length in the direction of a low flexibility region B that is closest to the region A. ## Claims ### Claim 1 A light-emitting device comprising: a flexible light-emitting panel, wherein the flexible light-emitting panel comprises a region capable of being bent inward or outward so that a gap of the flexible light-emitting panel decreases as a distance from the region increases. ### Claim 2 (depends on 1) The light-emitting device according to claim 1, wherein the flexible light-emitting panel comprises an electroluminescence element. ### Claim 3 (depends on 1) The light-emitting device according to claim 1, further comprising: a plurality of support panels each having a lower flexibility than the flexible light-emitting panel so as to prevent the light-emitting device from being bent at an undesired portion. ### Claim 4 A light-emitting device comprising: a flexible light-emitting panel, wherein the flexible light-emitting panel comprises a region capable of being bent inward or outward with a curvature radius and a first flat region and a second flat region each connected to the region so that a distance between the first flat region and the second flat region is less than twice the curvature radius. ### Claim 5 (depends on 4) The light-emitting device according to claim 4, wherein the curvature radius is greater than or equal to 1 mm and less than or equal to 10 mm. ### Claim 6 (depends on 4) The light-emitting device according to claim 4, wherein the flexible light-emitting panel comprises an electroluminescence element. ### Claim 7 (depends on 4) The light-emitting device according to claim 4, further comprising: a plurality of support panels each having a lower flexibility than the flexible light-emitting panel so as to prevent the light-emitting device from being bent at an undesired portion. ### Claim 8 A light-emitting device comprising: a flexible light-emitting panel, wherein the flexible light-emitting panel includes a first surface on one side of the flexible light-emitting panel and a second surface on the other side of the flexible light-emitting panel, wherein the flexible light-emitting panel is foldable so that a first portion of the first surface and a second portion of the first surface face each other so as to be bent inward with a first curvature radius and a first portion of the second surface and a second portion of the second surface face each other so as to be bent outward with a second curvature radius, and a shortest distance between the first portion of the first surface and the first portion of the second surface is less than twice the sum of the first curvature radius and the second curvature radius, and wherein the second portion of the first surface is opposite to the second portion of the second surface. ### Claim 9 (depends on 8) The light-emitting device according to claim 8, wherein each of the first curvature radius and the second curvature radius is greater than or equal to 1 mm and less than or equal to 10 mm. ### Claim 10 (depends on 8) The light-emitting device according to claim 8, wherein the flexible light-emitting panel comprises an electroluminescence element. ### Claim 11 (depends on 8) The light-emitting device according to claim 8, further comprising: a plurality of support panels each having a lower flexibility than the flexible light-emitting panel so as to prevent the light-emitting device from being bent at an undesired portion.