Organic electroluminescence display device and producing method thereof

• US 6,037,712 A
• Filed: 04/03/1997
• Issued: 03/14/2000
• Est. Priority Date: 06/10/1996
• Status: Expired due to Term

• Current Assignee: Futaba Corporation
• Original Assignee: TDK Corporation
• Inventors: Tanaka, Masaru, Codama, Mitsufumi
• Primary Examiner(s): Patel, Ashok
• Application Number:
  US08/834,733
• Time in Patent Office: 1,076 Days
• Field of Search: 313/505, 313/506, 313/504, 313/498, 313/513, 313/510, 313/292, 428/917, 315/169.3
• US Class Current: 313/498
• CPC Class Codes: H10K 50/814 combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/10 OLED displays
• CPC Class Codes: H10K 59/173 comprising banks or shadow masks
• CPC Class Codes: H10K 59/221 Static displays, e.g. displaying permanent logos
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

In manufacturing of an organic electroluminescence (EL) display device, after first electrodes are formed on a substrate, insulating films are formed on the first electrodes except regions corresponding to light emitting portions. Spacers are formed on the insulating films, and overhanging portions are formed so as to overhang the spacers. Thus, element isolating structure portions for isolating organic EL elements are formed. Then, organic EL films, second electrodes, and protecting films are sequentially formed between the spacers. In the thus formed light emitting portions of the organic EL display device, the bending angle of a bending portion of a pattern of the element isolating structure portion is larger than 90°.

Claims

1. An organic electroluminescence display device comprising:

a plurality of organic electroluminescence elements; and

an element isolating structure portion which is formed between adjacent organic electroluminescence elements and has an overhanging portion,

wherein a bending portion of the element isolating structure portion has a bending angle larger than 90°

.

2. The device of claim 1 wherein the element isolating structure portion further comprises a spacer which is formed under the overhanging portion and includes a metal.

3. An organic electroluminescence display device comprising:

a plurality of organic electroluminescence elements; and

an element isolating structure portion which is formed between adjacent organic electroluminescence elements and has an overhanging portion,

wherein a bending portion of the element isolating structure portion is formed by an arc having a radius of curvature of 5 μ

m or more.

4. The device of claim 3 wherein the element isolating structure portion further comprises a spacer which is formed under the overhanging portion and includes a metal.