Double-sided organic electroluminescent display module and information terminal

• US 6,998,772 B2
• Filed: 05/27/2003
• Issued: 02/14/2006
• Est. Priority Date: 06/07/2002
• Status: Expired due to Fees

• Current Assignee: ROHM Co., Ltd.
• Original Assignee: ROHM Co., Ltd.
• Inventors: Terumoto, Koji
• Primary Examiner(s): WILLIAMS, JOSEPH L
• Application Number:
  US10/445,415
• Publication Number:
  US 20030227254A1
• Time in Patent Office: 994 Days
• Field of Search: 313/498, 313/504, 313/506, 313/512
• US Class Current: 313/504
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/176 comprising two independent displays, e.g. for emitting information from two major sides of the display
• CPC Class Codes: H10K 59/179 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/90 Assemblies of multiple devices comprising at least one organic light-emitting element

Abstract

A double-sided organic electroluminescent display module capable of carrying out double-sided display includes two organic electroluminescent display elements each formed from at least a transparent electrode, an organic electroluminescent layer and a metal electrode layer laminated on a transparent substrate, wherein the two organic electroluminescent display elements are connected by connecting the metal electrodes together.

Claims

1. A double-sided organic electroluminescent display module, comprising:

two organic electroluminescent display elements each formed from at least a transparent electrode having electrode terminals, an organic electroluminescent layer and a metal electrode layer having electrode terminals, said transparent electrode, organic electroluminescent layer and said metal electrode layer being laminated in that order on a transparent substrate wherein said display elements are arranged so that the metal electrode layers of each of said display elements are superposed on one another;

wherein the two organic electroluminescent display elements are electrically connected at a side of the metal electrodes.

3. The double-sided organic electroluminescent display module of claim 1, wherein the electrode terminals of each of the two transparent electrodes and the electrode terminals of the metal electrodes are arranged on three different edges of the double-sided organic electroluminescent display module wherein said electrode terminals are parallel to the organic electroluminescent layer of the organic EL display module.

5. An information terminal equipped with the double-sided organic electroluminescent display module of claim 1.

7. An information terminal equipped with the double-sided organic electroluminescent display module of claim 3.

9. A double-sided organic electroluminescent display module as defined in claim 1, comprising:

an opaque film between said display elements.

10. A double-sided organic electroluminescent display module as defined in claim 1, comprising:

a reflecting film between said display elements.

2. A double-sided organic electroluminescent display module, comprising:

at least a first transparent electrode, a first organic electroluminescent layer, a non-transparent metal electrode layer, a second organic electroluminescent layer, and a second transparent electrode laminated in that order on a transparent substrate.

4. The double-sided organic electroluminescent display module of claim 2, wherein electrode terminals of each of the two transparent electrodes and electrode terminals of the metal electrode are arranged on three different edges of the double-sided organic electroluminescent display module wherein said electrode terminals are parallel to the organic electroluminescent layer of the organic EL display module.

6. An information terminal equipped with the double-sided organic electroluminescent display module of claim 2.

8. An information terminal equipped with the double-sided organic electroluminescent display module of claim 4.