Organic light emitting device

• US 8,427,047 B2
• Filed: 01/27/2009
• Issued: 04/23/2013
• Est. Priority Date: 04/16/2008
• Status: Expired due to Fees

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Choi, Beohm-Rock, Sung, Un-Cheol, Rhee, Jung-Soo, Lee, Sang-Woo, Lee, Soo-Yeon
• Primary Examiner(s): Mai, Anh
• Assistant Examiner(s): Breval, Elmito
• Application Number:
  US12/360,755
• Publication Number:
  US 20090261716A1
• Time in Patent Office: 1,547 Days
• Field of Search: 313459-512, 315/169.3, 315/169.4, 257/40, 257/79, 428/690, 428/917, 345/30, 345/36, 345/44, 345/45, 252/72, 252/181.1, 252/194
• US Class Current: 313/504
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 50/852 comprising a resonant cavity structure, e.g. Bragg reflector pair
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/351 comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/876 comprising a resonant cavity structure, e.g. Bragg reflector pair
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The present invention relates to an organic light emitting device including a first pixel, a second pixel, and a third pixel each displaying a color. Each pixel includes a reflecting member; a transflective member forming a micro-cavity along with the reflecting member; an organic light emitting member disposed between the reflecting member and the transflective member; a transparent electrode disposed between the reflecting member and the transflective member; and a compensation layer disposed between the reflecting member and the transflective member to form a predetermined distance between the reflecting member and the transflective member, wherein the distance between the reflecting member and the transflective member are substantially the same in the first pixel, the second pixel and the third pixel.

Claims

1. An organic light emitting device comprising:

a portion of a reflecting member;

a portion of a transflective member forming a micro-cavity with the reflecting member, wherein both the transflective member and the reflecting member extend continuously from the first pixel to the second pixel;

an organic light emitting member disposed between the reflecting member and the transflective member;

a transparent electrode disposed between the reflecting member and the transflective member; and

a compensation layer disposed between the reflecting member and the transflective member to form a predetermined interval between the reflecting member and the transflective member.

2. The organic light emitting device of claim 1, wherein the transflective member is not electrically connected to the thin film transistor.

3. The organic light emitting device of claim 1, further comprising:

a first insulating layer disposed between the thin film transistor and the transflective member;

a compensation layer disposed between the transflective member and the transparent electrode; and

a color filter disposed on a second substrate opposite to the first substrate.

4. The organic light emitting device of claim 3, wherein the transflective member is not electrically connected to the thin film transistor.

5. The organic light emitting device of claim 3, wherein the compensation layer, the transparent electrode, the organic light emitting member, and the reflecting member are sequentially deposited on the transflective member.

6. The organic light emitting device of claim 5, wherein the transflective member is not electrically connected to the thin film transistor.

7. The organic light emitting device of claim 1, wherein the thickness of the compensation layer is in the range of 300 nm to 999 nm.

8. An organic light emitting device comprising:

a first substrate;

a transflective member formed on the first substrate;

a reflecting member formed between the first substrate and the transflective member, and extend continuously from a first pixel to a second pixel;

an organic light emitting member disposed between the reflecting member and the transflective member;

a transparent electrode disposed between the reflecting member and the transflective member, and connected to a thin film transistor formed on the first substrate; and

a color filter formed on a second substrate,

wherein the transflective member is disposed between the thin film transistor and the color filter.

9. The organic light emitting device of claim 8, wherein the transflective member is not electrically connected to the thin film transistor.

10. The organic light emitting device of claim 8, further comprising:

a first insulating layer disposed between the thin film transistor and the transflective member;

a compensation layer disposed between the transflective member and the transparent electrode.

11. The organic light emitting device of claim 10, wherein the transflective member is not electrically connected to the thin film transistor.

12. The organic light emitting device of claim 10, wherein the compensation layer, the transparent electrode, the organic light emitting member, and the reflecting member are sequentially deposited on the transflective member.

13. The organic light emitting device of claim 12, wherein the transflective member is not electrically connected to the thin film transistor.

14. The organic light emitting device of claim 8, wherein the thickness of the compensation layer is in the range of 300 nm to 999 nm.