# US 2021/0345500 A1 · Light-emitting device

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- Number: US 2021/0345500 A1
- Document ID: US20210345500A1
- Status: Published application
- Kind: A1
- Application number: 17/367,661
- Filed: 2021-07-06
- Published: 2021-11-04
- Earliest claimed: 2013-09-03
- Assignees: Semiconductor Energy Laboratory Co., Ltd.
- Applicants: Semiconductor Energy Laboratory Co., Ltd.
- Inventors: Yoshiharu HIRAKATA; Yasuhiro JINBO; Shunpei YAMAZAKI
- Web page: https://patentgrep.com/patent/US20210345500A1

## CPC

- G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED}
- G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position}
- H01F 1/14708: {Fe-Ni based alloys (pure Fe or Ni H01F1/14, H01F1/16 or H01F1/20)}
- H01F 1/14791: {Fe-Si-Al based alloys, e.g. Sendust}
- H05K 5/0017: {with operator interface units}
- H05K 5/0086: {portable, e.g. battery operated apparatus (casings for switching devices H01H9/02)}
- H10K 50/84: Passivation; Containers; Encapsulations
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 77/111: {Flexible substrates}
- H10K 50/8426: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 50/844: Encapsulations
- H10K 50/846: {comprising getter material or desiccants}
- H10K 59/1201: {Manufacture or treatment}
- H10K 59/40: OLEDs integrated with touch screens
- H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants}
- H10K 59/873: {Encapsulations}
- H10K 59/874: {including getter material or desiccant}
- H10K 71/80: using temporary substrates
- H10K 2102/311: {Flexible OLED}
- Y02E 10/549: Organic PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A light-emitting device can be folded in such a manner that a flexible light-emitting panel is supported by a plurality of housings which are provided spaced from each other and the light-emitting panel is bent so that surfaces of adjacent housings are in contact with each other. Furthermore, in the light-emitting device, in which part or the whole of the housings have magnetism, the two adjacent housings can be fixed to each other by a magnetic force when the light-emitting device is used in a folded state.

## Claims

### Claim 1

An electronic device comprising:
a light-emitting panel;
a protective layer fixed to a back surface of the light-emitting panel; and
a first member and a second member which are less flexible than the light-emitting panel,
wherein, in a plan-view, the light-emitting panel and the protective layer have a region overlapping a gap between the first member and the second member,
wherein the electronic device is configured to be foldable by bending the light-emitting panel and the protective layer in the region,
wherein a sensor configured to determine whether the electronic device is in a folded state or not is provided, and
wherein, in the folded state, the light-emitting panel does not emit light.

### Claim 2

An electronic device comprising:
a light-emitting panel;
a protective layer fixed to a back surface of the light-emitting panel; and
a first member and a second member which are less flexible than the light-emitting panel,
wherein, in a plan-view, the light-emitting panel and the protective layer have a region overlapping a gap between the first member and the second member,
wherein the electronic device is configured to be foldable by bending the light-emitting panel and the protective layer in the region,
wherein the first member and the second member comprise magnets in regions facing each other when the light-emitting panel and the protective layer are folded,
wherein the folded state is fixed by magnetic force of the magnets embedded in the regions facing each other,
wherein a sensor configured to determine whether the electronic device is in a folded state or not is provided, and
wherein, in the folded state, the light-emitting panel does not emit light.

### Claim 3

An electronic device comprising:
a light-emitting panel;
a protective layer fixed to a back surface of the light-emitting panel; and
a first member and a second member which are less flexible than the light-emitting panel,
wherein, in a plan-view, the light-emitting panel and the protective layer have a region overlapping a gap between the first member and the second member,
wherein the electronic device is configured to be foldable by bending the light-emitting panel and the protective layer in the region,
wherein a plurality of magnets is embedded in the first member,
wherein magnets embedded in the second member are provided in regions facing the plurality of magnets when the light-emitting panel and the protective layer are folded,
wherein the folded state is fixed by magnetic force of the magnets embedded in the regions facing each other,
wherein a sensor configured to determine whether the electronic device is in a folded state or not is provided, and
wherein, in the folded state, the light-emitting panel does not emit light.