Luminescent display panel with insulating films

• US 6,222,315 B1
• Filed: 08/31/1998
• Issued: 04/24/2001
• Est. Priority Date: 09/24/1997
• Status: Expired due to Term

• Current Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Original Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Inventors: Yoshida, Kenji, Yoshizawa, Atsushi, Kubota, Hirofumi, Ishida, Taizo
• Primary Examiner(s): DAY, MICHAEL HENRY
• Application Number:
  US09/144,651
• Time in Patent Office: 967 Days
• Field of Search: 313/505, 313/504, 313/509, 313/506
• US Class Current: 313/509
• CPC Class Codes: H05B 33/22 characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
• CPC Class Codes: H10K 2102/341 Short-circuit prevention
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 59/173 comprising banks or shadow masks
• CPC Class Codes: H10K 59/80515 characterised by their shape

Abstract

A luminescent display panel includes a substrate (106), a plurality of first electrodes (102) formed on the substrate (106), and a plurality of insulating films (109) formed on the substrate (106) to cover edge portions of each first electrode (102) and having the central portion thereof exposed. A luminescent layer (103) is formed on exposed portions of the first electrodes (102) and on the insulating films (109), and a plurality of second electrodes (101) are formed on the luminescent layer (103). Each of the plurality of insulating films (109) has a thickness which becomes gradually smaller toward a center line of each adjacent first electrode (102).

Claims

1. A luminescent display panel, comprising:

a substrate;

a plurality of first electrodes formed on the substrate;

a plurality of insulating films formed on the substrate to cover edge portions of each first electrode but have the central portion thereof exposed;

a luminescent layer formed on exposed portions of the first electrodes and on the insulating films;

wherein the plurality of insulating films are formed in a manner such that each insulating film has a thickness which becomes gradually smaller toward a center line of each adjacent first electrode;

wherein each edge portion of each insulating film has an inclining angle of 45 degrees or less with respect to the surface of the substrate.

2. The luminescent display panel according to claim 1, wherein the plurality of insulating films are each made of a polyimide resin.

3. The luminescent display panel according to any one of claims 1 or 2, wherein the luminescent layer contains an organic material.