US5844362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent light element having a transparent electrode formed by a paste material which provides uniform illumination
Assignee: Panasonic Holdings Corp
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Filing: 1996-07-12
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Granted: 1998-12-01
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Expires: 2016-07-12
Abstract
Abstract All of a transparent electrode layer 2, a light-emitting layer 3, a dielectric layer 4, a back-surface electrode 5, collecting electrodes 5a, 5b, and an insulating coat layer 6 are laminated with predetermined patterns by screen printing on an insulating transparent film 1. Conductive paste used for forming transparent electrode layer 2 comprises conductive powder of indium oxide which contains needle-like powder (A) and fine-gain powder (B) at a blending ratio of (A):(B)=100:0 to 20:80. A binder resin (D), being a photo-hardening or thermal-hardening resin, is mixed with the conductive powder (C) at a blending ratio of (C):(D)=45:55 to 95:5, thereby obtaining an excellent EL lighting element.
Inventors
- 👤 Koji Tanabe
- 👤 Yosuke Chikahisa
- 👤 Heiji Ikoma
- 👤 Masahiro Ohara
- 👤 Masaru Kuwahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:39
CPC Classifications
H; H05; H05B; H05B33/00; H01; H01H; H01H13/00; H01H13/70; H01H13/702; H05B33/10; H05B33/12; H05B33/26; H05B33/28; H10; H10K; H10K59/00; H10K59/80; H10K59/805; H10K59/8051; H01H2219/00; H01H2219/002; H01H2219/018; H01H2219/028; H01H2219/036; H01H2219/046; H01H2221/00; H01H2221/05; H10K2102/00; H10K2102/10; H10K2102/101; H10K2102/102; H10K50/00; H10K50/80; H10K50/805; H10K50/81; H10K59/87; H10K59/871; H10K59/8723
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
An electroluminescent lighting element comprising: an insulating transparent film serving as a base material integrally formed with an external connecting terminal; a transparent electrode layer of a predetermined pattern printed on a surface of said insulating transparent film other than said external connecting terminal to define a predetermined light-emitting region being offset from said external connecting terminal; a light-emitting layer of a predetermined pattern printed on said transparent electrode layer as a light-emitting member corresponding to said light-emitting region; a dielectric layer of a predetermined pattern printed on said light-emitting layer; a back-surface electrode layer of a predetermined pattern printed on said dielectric layer; a first collecting electrode layer printed in a predetermined pattern having one end connected to said back-surface electrode layer and the other end constituting part of said external connecting terminal of said insulating transparent film; a second collecting electrode layer printed in a predetermined pattern having one end connected to said transparent electrode layer and the other end constituting part of said external connecting terminal of said insulating transparent film; and an insulating coat layer printed in a predetermined pattern so as to cover a surface of said electroluminescent lighting element except for said external connecting terminal.
Claim 2
Dependent Claim
201 words
An electroluminescent lighting element comprising: an insulating transparent film serving as a base material integrally formed with an external connecting terminal; a transparent electrode layer of a predetermined pattern printed on a surface of said insulating transparent film other than said external connecting terminal to define a predetermined light-emitting region being offset from said external connecting terminal; a light-emitting layer of a predetermined pattern printed on said transparent electrode layer as a light-emitting member corresponding to said light-emitting region; a dielectric layer of a predetermined pattern printed on said light-emitting layer; a back-surface electrode layer of a predetermined pattern printed on said dielectric layer; a first collecting electrode layer printed in a predetermined pattern having one end connected to said back-surface electrode layer and the other end constituting part of said external connecting terminal of said insulating transparent film; a second collecting electrode layer printed in a predetermined pattern having one end connected to said transparent electrode layer and the other end constituting part of said external connecting terminal of said insulating transparent film; and an insulating coat layer printed in a predetermined pattern so as to cover a surface of said electroluminescent lighting element except for said external connecting terminal.
Claim 3
Dependent Claim
56 words
The electroluminescent lighting element in accordance with claim 1, wherein said transparent electrode layer is formed by using a paste including conductive powder having light permeability which is diffused in an insulating resin or in a solution containing insulating resin, said conductive powder is indium oxide powder, and said insulating resin is photo-hardening or thermal-hardening resin.
Claim 4
Dependent Claim
67 words
The electroluminescent lighting element in accordance with claim 2, wherein said indium oxide powder serving as said conductive powder comprises needle-like powder (A) and fine-grain powder (B) blended at a weight ratio (A):(B) somewhere in a range of 100:0 to 20:80, and all the conductive powder (C) is blended with the insulating resin (D) at a weight ratio (C):(D) somewhere in a range of 45:55 to 95:5.
Claim 5
Dependent Claim
47 words
The electroluminescent lighting element in accordance with claim 2, wherein said insulating resin diffusing said light-permeable conductive powder therein is acrylate group photo-hardening resin, or thermal-hardening resin containing at least one selected from the group consisting of epoxy resin, urethane modified epoxy resin, epoxy modified polyester resin.
Claim 6
Dependent Claim
32 words
The electroluminescent lighting element in accordance with claim 1, wherein an anisotropic conductive adhesive is applied on said first and second collecting electrodes of a distal end of said external connecting terminal.
Claim 7
Dependent Claim
43 words
The electroluminescent lighting element in accordance with claim 1, wherein a reinforcement board is provided on a reverse surface of said insulating transparent film in a region of said other ends of said first and second collecting electrodes constituting said external connecting terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-30 | 2010-06-01 | 2010-12-01 | $7700.00 | Window Closed / Lapsed |