Self-scanning light-emitting device
US6452342B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/453
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A self-scanning light-emitting device is provided in which the number of bonding pads can be decreased, i.e. 2 or 3. The device comprises an array of a plurality of three-terminal light-emitting elements; electrical means having unidirectional characteristic to voltage or current for connecting the control electrodes of neighboring light-emitting elements to each other; two clock pulse lines for applying two-phase clock pulses alternately to one of two terminals except the control electrode of each light-emitting element; and a power supply line connected to each of the control electrodes of the light-emitting elements via a load resistor, respectively. The resistance of the load resistor connected to the light-emitting element to be turned on at first is selected to be smaller than that of other resistors. As a result, the bonding pad for the start pulse may be omitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.