US5155612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device with light shield
Assignee: Sharp Corp
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Filing: 1990-06-08
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Granted: 1992-10-13
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Expires: 2010-06-08
Abstract
Abstract A transmission type or projection type liquid crystal display device includes a light source and an active matrix type liquid crystal display panel provided with a thin film transistor arrangement. A shielding film is included for cutting off light incident upon the thin film transistor arrangement from the light source. Electrode terminals of the liquid crystal display panel and outputs of driving LSI circuits are connected to each other by flexible substrates with the connected portions between the electrode terminals of the liquid crystal display panel and the flexible substrates protected by a connected portion protecting resin. The liquid crystal display device is further provided with a light shielding device for covering at least the protecting resin portion of the liquid crystal display panel, so as to prevent light of the light source from entering the region of the connecting portion protecting resin.
Inventors
- 👤 Masahiro Adachi
- 👤 Nobuyoshi Nagashima
- 👤 Eiichi Takahashi
- 👤 Yutaka Takafuji
- 👤 Takao Nomura
- 👤 Shuhei Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133308; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/1339; G02F1/13332; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
128 words
A transmission type liquid crystal display device comprising: a light source for illuminating the display device; and an active matrix type liquid crystal display panel for displaying an image comprising thin film transistor means for controlling voltage applied to a liquid crystal layer of said liquid crystal display panel, a shielding film for cutting off light incident upon said thin film transistor means from said light source, and two glass substrates bonded together by a sealing resin for containing liquid crystal therebetween with said shielding film and said thin film transistor means formed respectively on inner surfaces said first two glass substrates, a dye or pigment being dispersed within said sealing resin so as to absorb visible light to prevent the visible light from entering the liquid crystal.
Claim 2
Dependent Claim
128 words
A transmission type liquid crystal display device comprising: a light source for illuminating the display device; and an active matrix type liquid crystal display panel for displaying an image comprising thin film transistor means for controlling voltage applied to a liquid crystal layer of said liquid crystal display panel, a shielding film for cutting off light incident upon said thin film transistor means from said light source, and two glass substrates bonded together by a sealing resin for containing liquid crystal therebetween with said shielding film and said thin film transistor means formed respectively on inner surfaces said first two glass substrates, a dye or pigment being dispersed within said sealing resin so as to absorb visible light to prevent the visible light from entering the liquid crystal.
Claim 3
Dependent Claim
35 words
The transmission type liquid crystal display device of claim 1, further comprising light shielding means for covering said sealing resin to prevent incident light from entering said liquid crystal display panel through said sealing resin.
Claim 4
Dependent Claim
128 words
A projection type liquid crystal display device comprising: a light source for illuminating the display device; and an active matrix type liquid crystal display panel for displaying an image comprising thin film transistor means for controlling voltage applied to a liquid crystal layer of said liquid crystal display panel, a shielding film for cutting off light incident upon said thin film transistor means from said light source, and two glass substrates bonded together by a sealing resin for containing liquid crystal therebetween with said shielding film and said thin film transistor means formed on inner surfaces of said two glass substrates, a dye or pigment being dispersed within said sealing resin so as to be absorb visible light to prevent the visible light from entering the liquid crystal.
Claim 5
Dependent Claim
128 words
A projection type liquid crystal display device comprising: a light source for illuminating the display device; and an active matrix type liquid crystal display panel for displaying an image comprising thin film transistor means for controlling voltage applied to a liquid crystal layer of said liquid crystal display panel, a shielding film for cutting off light incident upon said thin film transistor means from said light source, and two glass substrates bonded together by a sealing resin for containing liquid crystal therebetween with said shielding film and said thin film transistor means formed on inner surfaces of said two glass substrates, a dye or pigment being dispersed within said sealing resin so as to be absorb visible light to prevent the visible light from entering the liquid crystal.
Claim 6
Dependent Claim
130 words
An electro-optical apparatus comprising: a liquid crystal display panel for displaying an image, comprising first and second substrate bonded together by sealing resin with liquid crystal disposed therebetween; electrodes, mounted on an outer periphery of said first substrate which extends beyond said second substrate, for supplying driving signals from LSI circuits to thin film transistor means mounted on an inner surface of said first substrate confronting said second substrate, said LSI circuits mounted on flexible substrates attached to said first substrate; protecting resin for covering and protecting said electrodes mounted on said outer periphery of said first substrate; and light shielding means for covering said protecting resin to prevent incident light from entering said liquid crystal display panel through said protecting resin, said light shielding means comprising a U-shaped shield.
Claim 7
Dependent Claim
130 words
An electro-optical apparatus comprising: a liquid crystal display panel for displaying an image, comprising first and second substrate bonded together by sealing resin with liquid crystal disposed therebetween; electrodes, mounted on an outer periphery of said first substrate which extends beyond said second substrate, for supplying driving signals from LSI circuits to thin film transistor means mounted on an inner surface of said first substrate confronting said second substrate, said LSI circuits mounted on flexible substrates attached to said first substrate; protecting resin for covering and protecting said electrodes mounted on said outer periphery of said first substrate; and light shielding means for covering said protecting resin to prevent incident light from entering said liquid crystal display panel through said protecting resin, said light shielding means comprising a U-shaped shield.
Claim 8
Dependent Claim
15 words
The electro-optical apparatus of claim 4, said U-shaped shield comprising aluminum foil laminated with polyester.
Claim 9
Dependent Claim
14 words
The electro-optical apparatus of claim 4, said U-shaped shield comprising colored high polymer film.
Claim 10
Dependent Claim
28 words
The electro-optical apparatus of claim 4, further comprising a light source for generating said incident light wherein the electro-optical apparatus is a projection type liquid crystal display device.
Claim 11
Dependent Claim
29 words
The electro-optical apparatus of claim 4, further comprising a back-light illumination source for generating said incident light wherein the electro-optical apparatus is a transmission type liquid crystal display device.
Claim 12
Dependent Claim
130 words
An electro-optical apparatus comprising: a liquid crystal display panel for displaying an image, comprising first and second substrates bonded together by sealing resin with liquid crystal disposed therebetween; electrodes, mounted on an outer periphery of said first substrate which extends beyond said second substrate, for supplying driving signals from LSI circuits to thin film transistor means mounted on an inner surface of said first substrate confronting said second substrate, said LSI circuits mounted on flexible substrates attached to said first substrate; protecting resin for covering and protecting said electrodes mounted on said outer periphery of said first substrate; and light shielding means for covering said protecting resin to prevent incident light from entering said liquid crystal display panel through said projected resin, said light shielding means comprising a rectangularshaped shield.
Claim 13
Dependent Claim
130 words
An electro-optical apparatus comprising: a liquid crystal display panel for displaying an image, comprising first and second substrates bonded together by sealing resin with liquid crystal disposed therebetween; electrodes, mounted on an outer periphery of said first substrate which extends beyond said second substrate, for supplying driving signals from LSI circuits to thin film transistor means mounted on an inner surface of said first substrate confronting said second substrate, said LSI circuits mounted on flexible substrates attached to said first substrate; protecting resin for covering and protecting said electrodes mounted on said outer periphery of said first substrate; and light shielding means for covering said protecting resin to prevent incident light from entering said liquid crystal display panel through said projected resin, said light shielding means comprising a rectangularshaped shield.
Claim 14
Dependent Claim
15 words
The electro-optical apparatus of claim 9, said rectangular-shaped shield comprising aluminum foil laminated with polyester.
Claim 15
Dependent Claim
14 words
The electro-optical apparatus of claim 9, said rectangular-shaped shield comprising colored high polymer film.
Claim 16
Dependent Claim
28 words
The electro-optical apparatus of claim 9, further comprising a light source for generating said incident light wherein the electro-optical apparatus is a projection type liquid crystal display device.
Claim 17
Dependent Claim
29 words
The electro-optical apparatus of claim 9, further comprising a back-light illumination source for generating said incident light wherein the electro-optical apparatus is a transmission type liquid crystal display device.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |