LIGHT-EMITTING DEVICE, LIGHTING DEVICE, AND DISPLAY DEVICE

• US 20150076472A1
• Filed: 09/04/2014
• Published: 03/19/2015
• Est. Priority Date: 09/13/2013
• Status: Abandoned Application

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: YAMAZAKI, Shunpei, MATSUDA, Shinpei, KAWATA, Takuya
• Application Number:
  US14/476,771
• Publication Number:
  US 20150076472A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H10K 50/822 characterised by their shape
• CPC Class Codes: H10K 50/854 comprising scattering means
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 71/80 using temporary substrates

Abstract

A light-emitting device, a lighting device, a display device, or the like in which the state of a back surface side can be observed when light is not emitted is provided. The light-emitting device includes a plurality of light-emitting portions and a region transmitting visible light in a region other than the light-emitting portions. Alternatively, the light-emitting device includes a plurality of light-transmitting portions transmitting visible light and a light-emitting portion that can emit light in a region other than the light-transmitting portions. When light is not emitted, the state of a back surface side of the light-emitting device is visible through the region transmitting visible light. When light is emitted, the state of the back surface side of the light-emitting device can be made less visible by diffusion of light emitted from the light-emitting portion.

Claims

1. A light-emitting device comprising:

a light-emitting portion; and

a plurality of light-transmitting portions,

wherein the light-emitting portion comprises a net-like shape.

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

wherein the light-emitting portion and the plurality of light-transmitting portions are over one side of a substrate,

wherein light from the one side of the substrate is transmitted to an opposite side of the substrate through the plurality of light-transmitting portions, and

wherein the light-emitting portion emits light to the opposite side of the substrate.

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

wherein the light-emitting portion comprises a light-emitting element, and

wherein the light-emitting element is an organic EL element.

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

wherein the light-emitting portion comprises a light-emitting element, and

wherein the light-emitting element comprises a transistor.

5. The light-emitting device according to claim 4,

wherein an oxide semiconductor is used for a semiconductor layer of the transistor where a channel is formed.

6. The light-emitting device according to claim 1, wherein the light-emitting device is flexible.

7. The light-emitting device according to claim 1, wherein the light-emitting device has a bottom-emission structure.

8. The light-emitting device according to claim 1, wherein the light-emitting device has a top-emission structure.

9. The light-emitting device according to claim 1, wherein the light-emitting device has a dual-emission structure.

10. A lighting device comprising the light-emitting device according to claim 1.

11. A display device comprising the light-emitting device according to claim 1.

12. A light-emitting device comprising:

a plurality of light-emitting portions; and

a light-transmitting portion,

wherein the plurality of light-emitting portions are arranged in a matrix, and

wherein the light-transmitting portion comprises a net-like shape.

13. The light-emitting device according to claim 12,

wherein the plurality of light-emitting portions and the light-transmitting portion are over one side of a substrate,

wherein light from the one side of the substrate is transmitted to an opposite side of the substrate through the light-transmitting portion, and

wherein the plurality of light-emitting portions emit light to the opposite side of the substrate.

14. The light-emitting device according to claim 12,

wherein the plurality of light-emitting portions each comprise a light-emitting element, and

wherein the light-emitting element is an organic EL element.

15. The light-emitting device according to claim 12,

wherein the plurality of light-emitting portions each comprise a light-emitting element, and

wherein the light-emitting element comprises a transistor.

16. The light-emitting device according to claim 15, wherein an oxide semiconductor is used for a semiconductor layer of the transistor where a channel is formed.

17. The light-emitting device according to claim 12, wherein the light-emitting device is flexible.

18. The light-emitting device according to claim 12, wherein the light-emitting device has a bottom-emission structure.

19. The light-emitting device according to claim 12, wherein the light-emitting device has a top-emission structure.

20. The light-emitting device according to claim 12, wherein the light-emitting device has a dual-emission structure.

21. A lighting device comprising the light-emitting device according to claim 12.

22. A display device comprising the light-emitting device according to claim 12.