Patent US3763405A successfully refreshed from Google Patents.
US3763405A
Expired / Lapsed
US
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Solid state luminescent display device
Assignee: NEC Corp
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Filing: 1971-12-21
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Granted: 1973-10-02
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Expires: 1991-12-21
Abstract
Abstract A solid state luminescent display device comprising a GaAs substrate, a plurality of p-n junctions formed on one surface of the substrate in a predetermined pattern, an infrared-to-visible light converting fluorescent substance mounted on a luminescent region provided at each p-n junction, a plurality of recesses formed on the other surface of the substrate and arranged to correspondingly be aligned with respect to p-n junctions and infrared-to-visible light converting fluorescent substance provided in each recess to enable the device to simultaneously and selectively generate visible light at selective surfaces of the substrate, in accordance with those p-n junctions which are activated.
Inventors
- 👤 T Mitsuhata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
H; H10; H10D; H10D99/00; C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7766; C09K11/7772; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/851; H10H20/8516; H10H20/81; H10H20/819; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H10W; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/731; H10W90/734
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
The device of claim 1 wherein the width of each of said mesas is less than a predetermined amount to prevent the growth of said n-type material of said p-n junction from being grown upon the top surface of said mesa.
Claim 2
Dependent Claim
19 words
The device of claim 1 further comprising a light transparent insulating surface provided upon said light transparent conductive means.
Claim 3
Dependent Claim
17 words
The device of claim 1 further comprising contact means provided on said opposite surface of said substrate.
Claim 4
Dependent Claim
28 words
The device of claim 4 further comprising a light transparent insulating surface provided upon the contact means deposited upon said opposite surface and overlying said light converting substance.
Claim 5
Dependent Claim
32 words
The device of claim 1 whereIn the fluorescent materials deposited on said p-n junctions each form elongated segments separated from one another and arranged so as to collectively form a decimal ''''8.''''
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |