US3739241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent semiconductor device containing current controlling rectifying device
Assignee: US Philips Corp
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Filing: 1972-02-29
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Granted: 1973-06-12
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Expires: 1992-02-29
Abstract
Abstract An electroluminescent semiconductor device. An electroluminescent device which is arranged in a partly transparent, protective housing which comprises two connections. The device is characterized in that it comprises at least two semiconductor crystals of which one crystal shows an electroluminescent junction and the other shows a rectifying junction. The junctions are connected in series in such manner that during operation of the device all junctions are in the forward direction or all junctions are in the reverse direction.
Inventors
- 👤 J Thillays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/855; H05; H05B; H05B33/00; H05B33/02; H05B33/06; H10H20/852; H10H20/853; H10W; H10W72/00; H10W72/851; H10W72/874; H10W72/884; H10W74/00; H10W90/00; H10W90/701; H10W90/731; H10W90/736; H10W90/751; H10W90/753; H10W90/756
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
An electroluminescent device comprising a. a protective housing of at least partly transparent material; b. two mutually electrically insulated output connection members individually having a first portion within said housing and a second portion projecting from said housing; and c. at least first and second semiconductor crystals in said housing, and individually comprising two regions of opposite conductivity types, said regions of said first crystal defining an electroluminescent junction and said regions of said second crystal defining a rectifying junction, said crystals being in series connection with each other with one of said regions of said first crystal being electrically connected to a region of opposite conductivity type of said second crystal, said junctions being polarized in the same direction, the other respective regions of said first and second crystals being electrically connected to respective said connection members, whereby said second crystal controls the current to said first crystal.
Claim 2
Dependent Claim
149 words
An electroluminescent device comprising a. a protective housing of at least partly transparent material; b. two mutually electrically insulated output connection members individually having a first portion within said housing and a second portion projecting from said housing; and c. at least first and second semiconductor crystals in said housing, and individually comprising two regions of opposite conductivity types, said regions of said first crystal defining an electroluminescent junction and said regions of said second crystal defining a rectifying junction, said crystals being in series connection with each other with one of said regions of said first crystal being electrically connected to a region of opposite conductivity type of said second crystal, said junctions being polarized in the same direction, the other respective regions of said first and second crystals being electrically connected to respective said connection members, whereby said second crystal controls the current to said first crystal.
Claim 3
Dependent Claim
22 words
A device as recited in claim 1, wherein said first and second crystals are mounted on respective ones of said connection members.
Claim 4
Dependent Claim
37 words
A device as recited in claim 1, wherein said second crystal is mounted at a face thereof on one of said output connections and said first crystal is mounted on another opposite face of said second crystal.
Claim 5
Dependent Claim
21 words
A device as recited in claim 1, wherein said first crystal is located in the major axis of said protective housing.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |