US4688156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-shielding screen device
Assignee: Asahi Kasei Corp
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Filing: 1985-04-25
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Granted: 1987-08-18
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Expires: 2005-04-25
Abstract
Abstract A light-shielding screen device comprising a first light transmissible substrate, a second light transmissible substrate and an intermediate layer sandwiched therebetween, the intermediate layer comprising at least one light-shielding screen portion located in the middle area of the intermediate layer and a light non-transmissible retaining portion located at least in a portion of the remaining area of the intermediate layer, the portion of the remaining area including the entire outermost peripheral area of the intermediate layer. The light non-transmissible retaining portion of the intermediate layer of the present light-shielding screen device securely retains on its both sides the first and second light transmissible substrates, respectively. The present light-shielding screen device can be advantageously used not only as a light-shielding screen for television receivers, various displays having a CRT related to computers and the like in which a high mechanical strength of the light-shielding screen device is not necessarily required but also as an indicator means for push button type switches mounted on, e.g., an instrument panel of an automobile in which switches the light-shielding screen device is required to have a high mechanical strength.
Inventors
- 👤 Akira Suzuki
- 👤 Yukio Mizuta
- 👤 Rejiro Sato
- 👤 Kunio Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:27
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/08; F21V11/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
142 words
A light-shielding screen device comprising: (a) a first light transmissible substrate; (b) a second light transmissible substrate; and (c) an intermediate layer located between said first light transmissible substrate and said second light transmissible substrate, said intermediate layer comprising at least one light-shielding screen portion and a light non-transmissible retaining portion, said at least one light-shielding screen portion being located in the middle area of said intermediate layer and said light non-transmissible retaining portion located at least in a portion of the remaining area of said intermediate layer, said portion of the remaining area including the entire outermost peripheral area of said intermediate layer, said light-shielding screen comprising a plurality of nontransparent light shielding lines, said light non-transmissible retaining portion of the intermediate layer securely retaining on both its sides said first light transmissible substrate and said second light transmissible substrate, respectively.
Claim 2
Dependent Claim
142 words
A light-shielding screen device comprising: (a) a first light transmissible substrate; (b) a second light transmissible substrate; and (c) an intermediate layer located between said first light transmissible substrate and said second light transmissible substrate, said intermediate layer comprising at least one light-shielding screen portion and a light non-transmissible retaining portion, said at least one light-shielding screen portion being located in the middle area of said intermediate layer and said light non-transmissible retaining portion located at least in a portion of the remaining area of said intermediate layer, said portion of the remaining area including the entire outermost peripheral area of said intermediate layer, said light-shielding screen comprising a plurality of nontransparent light shielding lines, said light non-transmissible retaining portion of the intermediate layer securely retaining on both its sides said first light transmissible substrate and said second light transmissible substrate, respectively.
Claim 3
Dependent Claim
21 words
A light-shielding screen device according to claim 1, wherein said light-shielding lines are arranged to form a polygonal network pattern structure.
Claim 4
Dependent Claim
18 words
A light-shielding screen device according to claim 2, wherein said polygonal network structure is a honeycomb pattern structure.
Claim 5
Dependent Claim
21 words
A light-shielding screen device according to claim 1, wherein said intermediate layer comprises a photocured form of a photocurable resin composition.
Claim 6
Dependent Claim
32 words
A light-shielding screen device according to claim 4, wherein said photocurable resin composition is a radical photopolymerizable composition comprising a compound having a polymerizable ethylenically unsaturated group and a radical photopolymerization initiator.
Claim 7
Dependent Claim
40 words
A light-shielding screen device according to claim 4, wherein said photocurable resin composition is an addition photoreactable composition comprising a polyene compound having a plurality of double bonds, a polythiol compound having a plurality of thiol groups and a photosensitizer.
Claim 8
Dependent Claim
32 words
A light-shielding screen device according to claim 3, wherein said photocurable resin composition is a cation photopolymerizable composition comprising a cation polymerizable compound having an epoxy group and a cation photopolymerization initiator.
Claim 9
Dependent Claim
28 words
A light-shielding screen device according to claim 3, wherein said photocurable resin composition is a photocrosslinkable composition comprising a polymer having a functional group capable of being photodimerized.
Claim 10
Dependent Claim
28 words
A light-shielding screen device according to claim 1, wherein said light non-transmissible retaining portion is located in an entire portion of the remaining area of said intermediate layer.
Claim 11
Dependent Claim
21 words
A light-shielding screen device according to claim 1, wherein said light-shielding screen portion is in the form of a predetermined image.
Claim 12
Dependent Claim
27 words
A light-shielding screen device according to claim 1, wherein each separate line of said plurality of light-shielding lines is placed at a spaced interval from another line.
Claim 13
Dependent Claim
49 words
A light-shielding screen device according to claim 11, wherein said light-shielding lines are arranged at 20 to 1,000 micrometers apart from each other and each have a width of 10 to 500 micrometers and wherein the ratio of said width to said interval is about 1:1 to about 1:20.
Claim 14
Dependent Claim
31 words
A light-shielding screen device according to claim 11, wherein said plurality of light-shielding lines are parallel to the horizontal direction as viewed against the surface of the first light transmissible substrate.
Claim 15
Dependent Claim
31 words
A light-shielding screen device according to claim 11, wherein said plurality of light-shielding lines are perpendicular to the horizontal direction as viewed against the surface of the first light transmissible substrate.
Claim 16
Dependent Claim
40 words
A light-shielding screen device according to claim 11, wherein said plurality of light-shielding lines are aslant with a slanting angle of 30° to 60° relative to the horizontal direction as viewed against said surface of the first light transmissible substrate.
Claim 17
Dependent Claim
35 words
A light-shielding device according to claim 11, wherein said light-shielding lines intersect a plurality of crossing light-shielding lines each separately placed at a spaced interval from another line, to thereby form a screen pattern structure.
Claim 18
Dependent Claim
29 words
A light-shielding screen device according to claim 16, wherein said crossing light-shielding lines orthogonally intersect said light-shielding lines as viewed against the surface of said first light transmissible substrate.
Claim 19
Dependent Claim
71 words
A light-shielding screen device according to claim 16, wherein said light-shielding lines are left aslant with a slanting angle of 30° to 60° relative to the horizontal direction as viewed against the surface of the first light transmissible substrate and said crossing light-shielding lines are right aslant with a slanting angle of 30° to 60° relative to the horizontal direction as viewed against the surface of the first light transmissible substrate.
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |