Single pickup tube color television camera system
Abstract
Abstract The controlled EL cell of this invention includes in addition to the elements of a conventional EL cell a resistive heater film which is connected between a trigger and ground electrode, and a thermally sensitive switching control layer. The exciting voltage of the EL cell is continuously applied across both the phosphor layer and the switching layer. In the absence of a trigger pulse, the switching layer is in a high resistance state and the voltage across just the phosphor layer is maintained below the threshold potential required for illumination. The switching layer is responsive to the heat generated by a trigger pulse through the resistive layer to switch to a low resistance state to thereby act as a ground plane for causing the full potential to be applied across the phosphor to effect illumination.
Inventors
- 👤 Robert L Eilenberger
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |