US4168102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting display device including a light diffusing bonding layer
Assignee: Toshiba Corp
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Filing: 1977-10-12
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Granted: 1979-09-18
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Expires: 1997-10-12
Abstract
Abstract A light-emitting display device comprising a printed wiring board impressed with a wiring pattern; a light-emitting element mounted on the printed wiring board and electrically connected to the wiring pattern; a reflector provided with a penetrating hole for receiving the light-emitting element at its lower opening and disposed on the printed wiring board, the inner wall of the penetrating hole acting as a reflection plane; a light-permeable film containing light-scattering materials and closing the upper opening of the penetrating hole; and a bonding layer containing light-scattering material, the bonding layer bonding the light-permeable film to the reflector.
Inventors
- 👤 Takeo Chida
- 👤 Hiroshi Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/855; H10H20/856; G; G09; G09F; G09F13/00; G09F13/20; G09F13/22; G09F9/00; G09F9/30; H10H20/852; H10H20/854; H10H20/882
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A light-emitting display device which comprises a printed wiring board impressed with a wiring pattern; a light-emitting element mounted on the printed wiring board to be electronically connected to the wiring pattern; a bored member provided with a penetrating hole for receiving the light-emitting element in one open end portion thereof and disposed on the printed wiring board; a thin light-permeable film containing light-scattering material disposed on the surface of said bored member to close the other open end portion of the penetrating hole; and bonding layer means, containing light-scattering material and being applied substantially all over the underside of said light-permeable film, for adhering the light-permeable film to said bored member and for transmitting and diffusing light emitted from said light-emitting element.
Claim 2
Dependent Claim
123 words
A light-emitting display device which comprises a printed wiring board impressed with a wiring pattern; a light-emitting element mounted on the printed wiring board to be electronically connected to the wiring pattern; a bored member provided with a penetrating hole for receiving the light-emitting element in one open end portion thereof and disposed on the printed wiring board; a thin light-permeable film containing light-scattering material disposed on the surface of said bored member to close the other open end portion of the penetrating hole; and bonding layer means, containing light-scattering material and being applied substantially all over the underside of said light-permeable film, for adhering the light-permeable film to said bored member and for transmitting and diffusing light emitted from said light-emitting element.
Claim 3
Dependent Claim
22 words
The light-emitting display device according to claim 1, wherein the light-permeable film has a thickness ranging from 25 microns to 250 microns.
Claim 4
Dependent Claim
24 words
The light-emitting display device according to claim 1, wherein the light-permeable film is prepared from polyester resin and contains titanium oxide as light-scattering material.
Claim 5
Dependent Claim
42 words
The light-emitting display device according to claim 1, wherein said bored member is a reflector whose inner wall defining the penetrating hole acts as a reflection plane which is curved to reflect a light from the light-emitting element toward the light-permeable film.
Claim 6
Dependent Claim
29 words
The light-emitting display device according to claim 1 wherein the bonding layer means is capable of permitting the easy removal of the thin light-permeable film from the bored member.
Claim 7
Dependent Claim
134 words
A light-emitting display device, which comprises a printed wiring board impressed with the prescribed patterns of wiring; a light-emitting element mounted on the printed wiring board to be electrically connected to the corresponding patterned wiring impressed on the printed wiring board; a member which is provided with a penetrating hole for receiving the light-emitting element in one of the two open end portions thereof and disposed on the printed wiring board; a thin light-permeable film bonded to the surface of said bored member to close the other open end portion of the penetrating hole; and bonding layer means containing a light-scattering material and being applied substantially all over the underside of the light-permeable film for adhering the light-permeable film to said bored member and for transmitting and diffusing light emitted from said light-emitting element.
Claim 8
Dependent Claim
134 words
A light-emitting display device, which comprises a printed wiring board impressed with the prescribed patterns of wiring; a light-emitting element mounted on the printed wiring board to be electrically connected to the corresponding patterned wiring impressed on the printed wiring board; a member which is provided with a penetrating hole for receiving the light-emitting element in one of the two open end portions thereof and disposed on the printed wiring board; a thin light-permeable film bonded to the surface of said bored member to close the other open end portion of the penetrating hole; and bonding layer means containing a light-scattering material and being applied substantially all over the underside of the light-permeable film for adhering the light-permeable film to said bored member and for transmitting and diffusing light emitted from said light-emitting element.
Claim 9
Dependent Claim
22 words
The light-emitting display device according to claim 6, wherein the light-permeable film has a thickness ranging from 25 microns to 250 microns.
Claim 10
Dependent Claim
24 words
The light-emitting display device according to claim 6, wherein the light-permeable film is prepared from polyester resin and contains titanium oxide as light-scattering material.
Claim 11
Dependent Claim
42 words
The light-emitting display device according to claim 6, wherein said bored member is a reflector whose inner wall defining the penetrating hole acts as a reflection plane which is curved to reflect a light from the light-emitting element toward the light-permeable film.
Claim 12
Dependent Claim
29 words
The light-emitting display device according to claim 6 wherein the bonding layer means is capable of permitting the easy removal of the thin light-permeable film from the bored element.
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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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |