Color electroluminescence display panel having alternately-extending electrode groups

• US 4,977,350 A
• Filed: 05/11/1989
• Issued: 12/11/1990
• Est. Priority Date: 05/11/1988
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Tanaka, Koichi, Nakaya, Hiroaki, Yamaue, Satoshi, Yamashita, Takuo
• Primary Examiner(s): WIEDER, KENNETH A
• Application Number:
  US07/350,513
• Time in Patent Office: 579 Days
• Field of Search: 313/505, 313/506, 313/509, 428/690, 428/917
• US Class Current: 313/505
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00
• CPC Class Codes: G09F 9/33 being semiconductor devices, e.g. diodes
• CPC Class Codes: H05B 33/06 Electrode terminals
• CPC Class Codes: H05B 33/12 Light sources with substantially two-dimensional radiating surfaces
• CPC Class Codes: H05B 33/26 characterised by the composition or arrangement of the conductive material used as an electrode
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

A color electroluminescence display panel includes a substrate, a plurality of first and second electrodes disposed orthogonal to each other on the substrate, a luminescence layer interposed between the first and second electrodes, and insulating layers interposed between the electrodes and the luminescence layer, the luminescence layer having a plurality of luminescence layer groups each including a plurality of layer portions of different color luminescence, the first electrodes having a plurality of electrode groups corresponding in number to the luminescence layer groups, each first electrode group including a plurality of electrodes corresponding to the plural layer portions, the electrode groups alternately extending to opposite end portions of the substrate, and the extending end portions of the first electrode and the second electrode being supplied with a luminescence signal therebetween.

Claims

1. A color electroluminescence display panel, comprising:

a substrate;

a plurality of first and second electrodes on said substrate;

a luminescence layer interposed between said first and second electrodes; and

an insulating layer interposed between each of said first and second electrodes and said luminescence layer;

said first and second electrodes extending substantially orthogonal to each other and being maintained in noncontact relation with each other by said interposed luminescence and insulating layers;

said luminescence layer comprising a plurality of luminescence layer groups, each including a plurality of layer portions of different color luminescence; and

said first electrodes comprising a plurality of electrode groups corresponding to said luminescence layer groups, each including a plurality of electrodes corresponding to said luminescence layer portions of a respective luminescence layer group, all of the plural electrodes of each electrode group extending to the same end portion of said substrate and said electrode groups extending alternately to opposite end portions of said substrate, said first and second electrodes being supplied with a luminescence signal therebetween.

2. A panel according to claim 1 wherein each of said luminescence layer groups emits light in a plurality of colors.

3. A panel according to claim 1 wherein each of said luminescence layer groups has three layer portions for emitting red, green and blue light, respectively.

4. A panel according to claim 1 wherein each electrode group of said first electrodes and each of said second electrodes cross in noncontact relation to define one pixel.

5. A panel according to claim 1 wherein all of said second electrodes extend to an end portion of said substrate.

6. A panel according to claim 1 wherein said second electrodes extend alternately to opposite end portions of said substrate.