Electronic devices comprising an array
US5900767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/767
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A large-area electronic device comprises an array (1) of device elements (2,3) coupled to row and column conductors (A and B). The column conductors (B) are arranged in groups, (e.g M, M+1, M+2), and a column multiplexer circuit (C) couples the column conductors (B) of a respective group to a respective common terminal (5). The present invention provides a compatible multiplexer circuit (C) for the array (1), the operation of the circuit (C) using electrical switching rather than optical switching. This multiplexer circuit (C) for each column conductor comprises a diode bridge (SD3 to SD6) and may include a clamping switch (SD1, SD2). A signal is transmitted between the column conductor (B) and a common output terminal (5) in a first state of the diode bridge (SD3 to SD6). The potential of the column conductor (B) is clamped by the clamping switch (SD1, SD2) in a second state of the diode bridge. Each arm (11,12) of the bridge comprises a respective pair of diodes (SD3, SD4), (SD5, SD6) having the same polarity as each other between two current sources (21,22). The respective column conductor (B) is coupled to the diode node (13) of the first arm (11). The common terminal (5) is co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.