EP0110382A2
Expired / Lapsed
EP
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Display device and process for its production and decal for forming a display panel terminal
Assignee: Noritake Co Ltd
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Filing: 1983-11-29
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Granted: —
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Expires: 2003-11-29
Abstract
Abstract 57 After the process of manufacturing a cell of a display device a thick film conductor is bonded onto the terminal portion of a transparent electrode of the display panel by a dry or wet transfer mounting method and a flexible print circuit board for a driver is soldered on the thick film conductor, such a display device; a process for producing the display device; and a decal for dry or wet transfer mounting method to form a display panel terminal.
Inventors
- 👤 Toshio Minowa
- 👤 Tetsuro Hashimoto
- 👤 Kohji Kuroda
- 👤 Kazutaka Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 19:42
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; H; H05; H05K; H05K3/00; H05K3/10; H05K3/20; H05K3/207; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K1/09; H05K1/092; H05K1/095; H05K2201/00; H05K2201/03; H05K2201/032; H05K2201/0326; H05K2201/0332; H05K2201/0335; H05K2201/0338; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0156; H05K2203/05; H05K2203/0502; H05K2203/0531; H05K3/22; H05K3/24; H05K3/245; H05K3/36; H05K3/361; H05K3/363; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
84 words
In a display device wherein a thick film conductor is bonded onto a transparent electrode terminal portion of a display panel and a flexible print circuit board is soldered onto the thick film conductor, the improvement wherein the thick film conductor is bonded by a transfer mounting method and preferably has a double-layered structure comprising a first layer of a low-conductive material on the transparent electrode terminal side and a second layer of a highly conductive material on the flexible print circuit board side.
Claim 2
Dependent Claim
84 words
In a display device wherein a thick film conductor is bonded onto a transparent electrode terminal portion of a display panel and a flexible print circuit board is soldered onto the thick film conductor, the improvement wherein the thick film conductor is bonded by a transfer mounting method and preferably has a double-layered structure comprising a first layer of a low-conductive material on the transparent electrode terminal side and a second layer of a highly conductive material on the flexible print circuit board side.
Claim 3
Dependent Claim
63 words
The display device according to Claim 1 , wherein the highly conductive material is a thermosetting conductive material containing from 60 to 95% by weight of a conductor material, and the low-conductive material has a less content of a conductor material than the highly conductive material and is a thermosetting conductive material containing from 50 to 90% by weight of a conductor material.
Claim 4
Dependent Claim
28 words
The display device according to Claim 1, wherein the solder joint portion of the thick film conductor and the flexible print circuit board is covered with a resin.
Claim 5
Dependent Claim
23 words
The display device according to Claim 1, wherein the display panel is a passive optical display panel, preferably a liquid crystal display panel.
Claim 6
Dependent Claim
80 words
In a process for producing a display device according to claims 1 to 4 ccmprising bonding a thick film conductor onto a transparent electrode terminal portion of a display panel and soldering a flexible print circuit board to the thick film conductor, the improvement wherein the thick film conductor is obtained by bonding a conductive coat onto the transparent electrode terminal portion, by a transfer mounting method using a decal having the conductive coat and then curing the conductive coat.
Claim 7
Dependent Claim
57 words
6 . The process according to Claim 5 , wherein the transfer mounting method is a dry transfer mounting method wherein a dry transfer decal is used having a conductive coat formed on a film alone or on a laminated paper comprising a base sheet and a film laminating to be able to release thereon, is used.
Claim 8
Dependent Claim
52 words
The process according to Claim 6., wherein the conductive coat is transferred from the film or the laminated paper each having the conductive coat formed thereon onto the transparent electrode terminal portion by heat-pressing the conductive coat so that a low conductive material layer is bonded to the transparent electrode terminal portion.
Claim 9
Dependent Claim
47 words
The process according to Claim 5, wherein the transfer mounting method is a wet transfer mounting method wherein a wet transfer decal comprising a relesable base sheet, a conductive coat formed thereon and a top coat of a resin screen printed on the conductive coat', is used.
Claim 10
Dependent Claim
66 words
9 . The process according to Claim 5, wherein the conductive coat transferred from the decal is heated to a temperature of from 100 to 200°C to form a hardened thick film conductor, and the thick film conductor is then subjected to preliminary soldering treatment in a solder bath at a temperature of from 120 to 250°C and then soldered to the flexible print circuit board.
Claim 11
Dependent Claim
20 words
10 . The process according to Claim 5, wherein the conductive coat contains a conductor material of a base netal.
Claim 12
Dependent Claim
68 words
A decal for forming a display panel terminal, which comprises a conductive coat formed on a film or on a laminated paper comprising a base sheet and a film detachably laminated thereon, wherein the conductive coat has a double-layered structure comprising a highly conductive material layer formed on the film or on the laminated paper and a low conductive material layer formed on the highly conductive material layer.
Claim 13
Dependent Claim
68 words
A decal for forming a display panel terminal, which comprises a conductive coat formed on a film or on a laminated paper comprising a base sheet and a film detachably laminated thereon, wherein the conductive coat has a double-layered structure comprising a highly conductive material layer formed on the film or on the laminated paper and a low conductive material layer formed on the highly conductive material layer.
Claim 14
Dependent Claim
52 words
The decal according to Claim 11, wherein the film is a plastic film, preferably a polyester film, a polyethylene film or a polypropylene film and has a thickness of from 25 to 300 µm when used alone, or a thickness of from 10 to TOO µm when laminated on the base sheet.
Claim 15
Dependent Claim
27 words
The decal according to Claim 11, wherein the thermosetting conductive material contains an organic binder, which is preferably hardenable at a temperature of from 100 to 200°C.
Claim 16
Dependent Claim
41 words
A decal according to Claim 11, characterized by a top coat of a resin laminated on the conductive coat, whereby the top coat is preferably a thermoplastic resin, such as an acryl resin, a vinyl chloride resin or a polyethylene resin.
References Cited (Backward Citations)
No citation records indexed.
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