GAP CONTROLLABLE DISPLAY DEVICE

• US 20140118678A1
• Filed: 03/13/2013
• Published: 05/01/2014
• Est. Priority Date: 10/25/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Yong-Seok Yeo
• Inventors: YEO, Yong-Seok
• Granted Patent: US 9,425,421 B2
• Time in Patent Office: Days
• US Class Current: 349/155
• CPC Class Codes: G02F 1/133371 Cells with varying thickness of the liquid crystal layer
• CPC Class Codes: G02F 1/133394 Piezoelectric elements associated with the cells
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• 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 50/816 Multilayers, e.g. transparent multilayers

Abstract

A display device including a first substrate; a display element layer on the first substrate; a second substrate on the display element layer; and a spacer layer between the first substrate and the second substrate.

Claims

1. A display device, comprising:

a first substrate;

a display element layer on the first substrate;

a second substrate on the display element layer; and

a spacer layer between the first substrate and the second substrate.

2. The display device of claim 1, wherein the spacer layer is between the first substrate and the display element layer.

3. The display device of claim 1, wherein the spacer layer is between the display element layer and the second substrate.

4. The display device of claim 1, wherein the spacer layer is spaced apart from the display element layer between the first substrate and the second substrate.

5. The display device of claim 1, wherein the display element layer includes:

a first electrode,

a second electrode facing the first electrode, and

an active layer between the first electrode and the second electrode.

6. The display device of claim 5, wherein the active layer is an organic emission layer.

7. The display device of claim 6, wherein the display element layer further includes at least one of a hole injection layer (HIL) or a hole transfer layer (HTL) between the first electrode and the organic emission layer.

8. The display device of claim 6, wherein the display element layer further includes at least one of an electron injection layer (EIL) or an electron transport layer (ETL) between the second electrode and the organic emission layer.

9. The display device of claim 5, wherein the active layer is a liquid crystal layer.

10. The display device of claim 1, wherein the spacer layer includes:

a first spacer electrode,

a second spacer electrode facing the first spacer electrode, and

an electroactive polymer layer between the first spacer electrode and the second spacer electrode.

11. The display device of claim 10, wherein a thickness of the electroactive polymer layer varies in response to a voltage applied between the first spacer electrode and the second spacer electrode.

12. The display device of claim 10, wherein the electroactive polymer layer includes a transmissive polymer.

13. The display device of claim 10, wherein the electroactive polymer layer includes at least one of polyvinylidene fluoride (PVDF), polydimethyl siloxan (PDMS), or polyvinylidene fluoride-co-triflurethylene (PVFT).

14. The display device of claim 10, wherein the first spacer electrode and the second spacer electrode include a transmissive material.

15. The display device of claim 14, wherein the transmissive material is a transparent conductive oxide.

16. The display device of claim 15, wherein the transparent conductive oxide includes at least one of ITO, IZO, ATO, AZO, or ZnO.