US4255688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light emitter mounted on reflector formed on end of lead
Assignee: Toshiba Corp
•
Filing: 1978-12-13
•
Granted: 1981-03-10
•
Expires: 1998-12-13
Abstract
Abstract A light emitting display device having a light emitting element mounted on a first reflector at the optical center of a reflective surface thereof and a second lead connected to the light emitting element with a metal wire, wherein in order to miniaturize the light emitting display device and to provide the light emitting display device with satisfactory characteristic as regards appearance when turned on, the first reflector, which is also used as a first lead to the device, has a cut-off portion. The second lead is disposed adjacent to the cut-off portion and the metal wire connecting the light emitting element to the second lead passes over the cut-off portion.
Inventors
- 👤 Hiroshi Nagasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/857; H10H20/852; H10H20/855; H10H20/856; H10W; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
142 words
A light emitting display device, comprising: a first reflector including a first reflective surface having a substantially pyramid shaped face, said first reflector including a single cut-off portion in its reflective surface; a first lead attached to said first reflector; a light emitting element mounted on a flat surface within said reflector; a second lead disposed adjacent to said cut-off portion of said first reflector, said second lead being spaced a fixed distance from said first reflector, said second lead including an upper portion having a second reflective surface which functions as a second reflector; and a wire coupling said light emitting element to said second lead; wherein said first and second reflectors together form a substantially pyramid shaped surface surrounding said light emitting element, said surface being interrupted only by said fixed distance between said second lead and said first reflector.
Claim 2
Dependent Claim
142 words
A light emitting display device, comprising: a first reflector including a first reflective surface having a substantially pyramid shaped face, said first reflector including a single cut-off portion in its reflective surface; a first lead attached to said first reflector; a light emitting element mounted on a flat surface within said reflector; a second lead disposed adjacent to said cut-off portion of said first reflector, said second lead being spaced a fixed distance from said first reflector, said second lead including an upper portion having a second reflective surface which functions as a second reflector; and a wire coupling said light emitting element to said second lead; wherein said first and second reflectors together form a substantially pyramid shaped surface surrounding said light emitting element, said surface being interrupted only by said fixed distance between said second lead and said first reflector.
Claim 3
Dependent Claim
26 words
A light emitting display device as recited in claim 1, wherein: said light emitting element is positioned at the optical center of said first reflective surface.
References Cited (Backward Citations)
US3290539A
Cited
US3555335A
Cited
US3676668A
Cited
US3764862A
Cited
US3860847A
Cited
US3914786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |