Light-emitting diode print head with staggered electrodes
US5258629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Mar 6, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A light-emitting diode print head having a narrow LED array chip wherein the constituent LEDs of the array are arranged in a zigzag formation and driven using a differential timing arrangement that compensates for the offset of alternate LEDs in the printing line. The LED array comprises a plurality of light-emitting elements arrayed in a staggered configuration of odd and even numbered elements in parallel rows extending in a first, print line direction and a plurality of electrodes connected to the corresponding light-emitting elements and arranged in a mutually alternating orientation extending between the parallel rows at right-angles to the first direction and forming parallel rows of odd and even numbered electrode terminals interleaved between the even and odd numbered light-emitting elements, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.