Light emitting element array, optical printer head using the same, and method for driving optical printer head
US6633322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Jun 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/1305
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A light emitting element array is provided with a plurality of light emitting diodes arranged in a row, field-effect transistors connected in series with the respective light emitting diodes, shift registers for individually turning the respective field-effect transistors on by individually supplying drive signals to gates of the respective field-effect transistors, and an emission controller for driving the light emitting diodes by supplying the emission signals, whose levels are so differed as to correspond to the respective light emitting diodes, to the light emitting diodes connected with the field-effect transistors when these field-effect transistors are individually turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.