Patent · US9406698B2 · B2 · US

Display device and manufacturing method thereof

(11) Publication number

US9406698B2

(21) Application number

13/974,220

(22) Filing date

2013-08-23

(30) Priority date

2012-08-28

(43) Publication date

2016-08-02

(45) Date of grant

2016-08-02

(51) IPC

H10D 30/01; H10D 30/67; H10K 71/00; H10K 71/16; H10K 99/00; G02F 1/1333; G02F 1/1339

(52) CPC

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: 1/133308, 1/1339
H01L Semiconductor devices; electric solid state devices not otherwise provided for: 2251/5338, 27/1214, 27/1225, 51/524, 51/5246, 51/56
H05B Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general: 33/04, 33/10
H10D Inorganic electric semiconductor devices: 30/6755, 86/40, 86/423, 86/60
H10K Organic electric solid-state devices: 2102/311, 50/841, 50/8426, 50/844, 59/1201, 59/1213, 59/8722, 59/873, 71/00, 71/16, 77/111
Y02E Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution: 10/549
Y02P Climate change mitigation technologies in the production or processing of goods: 70/50

(73) Assignee

Semiconductor Energy Laboratory Co Ltd

(72) Inventors

Shunpei Yamazaki; Yoshiharu Hirakata; Takeshi Nishi

(54) Title

Display device and manufacturing method thereof

(57) Abstract

A display device in which reliability of a display element is improved is provided. Alternatively, a display device in which reliability of a transistor is improved is provided. Alternatively, a display device in which an increase in an area of a periphery region is suppressed is provided. A display device includes a display region including a display element between a first flexible substrate and a second flexible substrate in which the display region is surrounded by a first continuous sealant, the first sealant is surrounded by a second continuous sealant, and the second sealant is provided between the first substrate and the second substrate and on at least one of a side surface of the first substrate and a side surface of the second substrate.

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Claims (14)

A display device comprising: a first flexible substrate and a second flexible substrate; an insulating film over the first flexible substrate; a first continuous sealant between the insulating film and the second flexible substrate; and a second sealant between the insulating film and the second flexible substrate, the second sealant surrounding the first sealant, wherein the first continuous sealant comprises glass, wherein the second sealant comprises a first member and a second member, wherein the first member is in contact with a side surface of the first flexible substrate and a side surface of the second flexible substrate, wherein a side surface of the second member is in contact with the first member, and wherein a bottom surface of the second member is in contact with a top surface of the insulating film.
The display device according to claim 1, wherein the first member comprises a resin material or glass.
The display device according to claim 1, wherein the first member comprises a resin material.
The display device according to claim 1, wherein the second member comprises a metal material.
An electronic appliance comprising the display device according to claim 1.
The display device according to claim 1, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the oxide semiconductor layer comprises at least one of indium, gallium, and zinc.
The display device according to claim 1, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the transistor comprising an AlOx layer over the oxide semiconductor layer.
A display device comprising: a first flexible substrate and a second flexible substrate; an insulating film over and in contact with the first flexible substrate; a first continuous sealant between the first flexible substrate and the second flexible substrate; and a second sealant between the first flexible substrate and the second flexible substrate, the second sealant surrounding the first continuous sealant, wherein the first continuous sealant and the second sealant are in contact with the insulating film, wherein the first continuous sealant comprises glass, wherein the second sealant comprises a first member and a second member, wherein the first member is in contact with a side surface of the first flexible substrate and a side surface of the second flexible substrate, wherein a side surface of the second member is in contact with the first member, and wherein a bottom surface of the second member is in contact with a top surface of the insulating film.
The display device according to claim 8, wherein the first member comprises a resin material or glass.
The display device according to claim 8, wherein the first member comprises a resin material.
The display device according to claim 8, wherein the second member comprises a metal material.
An electronic appliance comprising the display device according to claim 8.
The display device according to claim 8, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the oxide semiconductor layer comprises at least one of indium, gallium, and zinc.
The display device according to claim 8, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the transistor comprising an AlOx layer over the oxide semiconductor layer.

Description

1. Field of the Invention

The present invention relates to an object, a method, or a manufacturing method. The present invention relates to a semiconductor device, a display device, a light-emitting device, or a manufacturing method thereof, for example. In particular, the present invention relates to a semiconductor device including an oxide semiconductor, a display device including an oxide semiconductor, or a light-emitting device including an oxide semiconductor, for example. Alternatively, the present invention relates to a display device for displaying an image.

2. Description of the Related Art

A variety of portable electronic devices, such as a cell phone, a smartphone, a personal computer, a tablet terminal, a portable game machine, and a portable music player, have recently come into widespread use.

In the display portion, a light-emitting device including a light-emitting element, a liquid crystal display device, an electronic paper performing display by an electrophoretic method or an electronic liquid powder method, or the like can be typically used.

For example, research and development of light-emitting elements using electroluminescence (EL) have been actively carried out. In a basic structure of such a light-emitting element, a layer containing a substance with a light-emitting property is interposed between a pair of electrodes. By applying a voltage to this element, light emission can be obtained from the light-emitting substance.

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Record as JSON

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  "publication_number": "US9406698B2",
  "country": "US",
  "kind": "B2",
  "title": "Display device and manufacturing method thereof",
  "abstract": "A display device in which reliability of a display element is improved is provided. Alternatively, a display device in which reliability of a transistor is improved is provided. Alternatively, a display device in which an increase in an area of a periphery region is suppressed is provided. A display device includes a display region including a display element between a first flexible substrate and a second flexible substrate in which the display region is surrounded by a first continuous sealant, the first sealant is surrounded by a second continuous sealant, and the second sealant is provided between the first substrate and the second substrate and on at least one of a side surface of the first substrate and a side surface of the second substrate.",
  "claims": [
    "1. A display device comprising: a first flexible substrate and a second flexible substrate; an insulating film over the first flexible substrate; a first continuous sealant between the insulating film and the second flexible substrate; and a second sealant between the insulating film and the second flexible substrate, the second sealant surrounding the first sealant, wherein the first continuous sealant comprises glass, wherein the second sealant comprises a first member and a second member, wherein the first member is in contact with a side surface of the first flexible substrate and a side surface of the second flexible substrate, wherein a side surface of the second member is in contact with the first member, and wherein a bottom surface of the second member is in contact with a top surface of the insulating film.",
    "2. The display device according to claim 1, wherein the first member comprises a resin material or glass.",
    "3. The display device according to claim 1, wherein the first member comprises a resin material.",
    "4. The display device according to claim 1, wherein the second member comprises a metal material.",
    "5. An electronic appliance comprising the display device according to claim 1.",
    "6. The display device according to claim 1, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the oxide semiconductor layer comprises at least one of indium, gallium, and zinc.",
    "7. The display device according to claim 1, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the transistor comprising an AlOx layer over the oxide semiconductor layer.",
    "8. A display device comprising: a first flexible substrate and a second flexible substrate; an insulating film over and in contact with the first flexible substrate; a first continuous sealant between the first flexible substrate and the second flexible substrate; and a second sealant between the first flexible substrate and the second flexible substrate, the second sealant surrounding the first continuous sealant, wherein the first continuous sealant and the second sealant are in contact with the insulating film, wherein the first continuous sealant comprises glass, wherein the second sealant comprises a first member and a second member, wherein the first member is in contact with a side surface of the first flexible substrate and a side surface of the second flexible substrate, wherein a side surface of the second member is in contact with the first member, and wherein a bottom surface of the second member is in contact with a top surface of the insulating film.",
    "9. The display device according to claim 8, wherein the first member comprises a resin material or glass.",
    "10. The display device according to claim 8, wherein the first member comprises a resin material.",
    "11. The display device according to claim 8, wherein the second member comprises a metal material.",
    "12. An electronic appliance comprising the display device according to claim 8.",
    "13. The display device according to claim 8, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the oxide semiconductor layer comprises at least one of indium, gallium, and zinc.",
    "14. The display device according to claim 8, the display device further comprises a transistor comprising an oxide semiconductor layer over the first flexible substrate, wherein the transistor comprising an AlOx layer over the oxide semiconductor layer."
  ],
  "description_excerpt": "1. Field of the Invention\n\nThe present invention relates to an object, a method, or a manufacturing method. The present invention relates to a semiconductor device, a display device, a light-emitting device, or a manufacturing method thereof, for example. In particular, the present invention relates to a semiconductor device including an oxide semiconductor, a display device including an oxide semiconductor, or a light-emitting device including an oxide semiconductor, for example. Alternatively, the present invention relates to a display device for displaying an image.\n\n2. Description of the Related Art\n\nA variety of portable electronic devices, such as a cell phone, a smartphone, a personal computer, a tablet terminal, a portable game machine, and a portable music player, have recently come into widespread use.\n\nIn the display portion, a light-emitting device including a light-emitting element, a liquid crystal display device, an electronic paper performing display by an electrophoretic method or an electronic liquid powder method, or the like can be typically used.\n\nFor example, research and development of light-emitting elements using electroluminescence (EL) have been actively carried out. In a basic structure of such a light-emitting element, a layer containing a substance with a light-emitting property is interposed between a pair of electrodes. By applying a voltage to this element, light emission can be obtained from the light-emitting substance.",
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  "assignees": [
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  "inventors": [
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  "filing_date": "2013-08-23",
  "publication_date": "2016-08-02",
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  "priority_date": "2012-08-28",
  "application_number": "US-201313974220-A",
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