Light-emitting device with stacked layers

• US 10,243,166 B2
• Filed: 02/17/2015
• Issued: 03/26/2019
• Est. Priority Date: 02/17/2015
• Status: Active Grant

• Current Assignee: Pioneer Corporation, Tohoku Pioneer Company Limited (Pioneer Corporation)
• Original Assignee: Pioneer Corporation, Tohoku Pioneer Company Limited (Pioneer Corporation)
• Inventors: Seki, Shuichi, Tanaka, Shinsuke
• Primary Examiner(s): Henry, Caleb E
• Application Number:
  US15/551,872
• Publication Number:
  US 20180040844A1
• Time in Patent Office: 1,498 Days
• Field of Search: 257 40
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/00 Organic light-emitting devices integrated devices or assemblies of multiple devices H10K59/00, H10K65/00; organic semiconductor lasers H01S5/36
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A substrate (100) includes a resin material. A first stacked film (210) is configured by laminating multiple layers and is formed on a first surface (102) of the substrate (100). A light-emitting unit (140) is formed over the first stacked film (210) and includes an organic layer. A second stacked film (220) is configured by laminating multiple layers and covers the light-emitting unit (140). A third stacked film (310) is configured by laminating multiple layers and is formed on a second surface (104) of the substrate (100). The third stacked film (310) is the same stacked film as the first stacked film (210), and the fourth stacked film (320) is the same stacked film as the second stacked film (220).

Claims

1. A light-emitting device comprising:

a substrate comprising a resin material;

a first stacked film formed on a first surface of the substrate and comprising a plurality of stacked layers,

wherein the first stacked film is a stacked film formed by repeatedly stacking a first layer and a second layer a plurality of times,

wherein the second layer has a material different from that of the first layer, and

wherein at least one of the first layer is thicker than another first layer and the second layers;

a light-emitting unit formed on the first stacked film and comprising an organic layer;

a second stacked film covering the light-emitting unit and comprising a plurality of stacked layers;

a third stacked film formed on a second surface of the substrate and comprising a plurality of stacked layers;

a fourth stacked film formed overlapping the third stacked film and comprising a plurality of stacked layers,

wherein the number of layers of the third stacked film is the same as that of the first stacked film, and materials of respective ones of the plurality of layers constituting the third stacked film are the same as materials of respective ones of the plurality of layers of the first stacked film positioned in a laminating order corresponding to a laminating order of the third stacked film when counted from the substrate side, and

wherein the number of layers of the fourth stacked film is the same as that of the second stacked film, and materials of respective ones of the plurality of layers constituting the fourth stacked film are the same as materials of respective ones of the plurality of layers of the fourth stacked film positioned in a laminating order corresponding to a laminating order of the fourth stacked film when counted from the substrate side.

2. The light-emitting device according to claim 1,

wherein when counted from the substrate side, the third stacked film is the same as the first stacked film, and the fourth stacked film is the same as the second stacked film.

3. The light-emitting device according to claim 1,

wherein the second stacked film is thicker than the first stacked film, and the fourth stacked film is thicker than the third stacked film.

4. The light-emitting device according to claim 1, wherein all the plurality of the stacked layers in the first stacked film, all the plurality of the stacked layers in the second stacked film, all the plurality of the stacked layers in the third stacked film, and all the plurality of the stacked layers in the fourth stacked film are inorganic films.

5. A light-emitting device comprising:

a first stacked film comprising a plurality of stacked layers, a light-emitting unit comprising an organic layer, and a second stacked film comprising a plurality of stacked layers, wherein the first stacked film, the light-emitting unit, and the second stacked film are on a first surface of a substrate comprising a resin material in this order,

wherein the first stacked film is a stacked film formed by repeatedly stacking a first layer and a second layer a plurality of times,

wherein the second layer has a material different from that of the first layer,

wherein at least one or the first layer s thicker than another first layer and the second layers,

a third stacked film comprising a plurality of stacked layers, and a fourth stacked film comprising a plurality of stacked layers, wherein the third stacked film and the fourth stacked film are on a second surface of the substrate in this order,

wherein each of the plurality of stacked layers of the third stacked film contains the same material as each of the plurality of layers of the first stacked film, and the plurality of layers of the third stacked film are in the same order with the plurality of layers of the first stacked film when counted from the substrate,

wherein each of the plurality of stacked layers of the fourth stacked film contains the same material as each of the plurality of layers of the second stacked film, and the plurality of layers of the fourth stacked film are in the same order with the plurality of layers of the second stacked film when counted from the substrate.

6. The light emitting device according to claim 5,

wherein the number of layers of the third stacked film is the same as that of the first stacked film, and the number of layers of the fourth stacked film is the same as that of the second stacked film.