Relocating common connector pads in display devices
US10001640B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2016 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Jul 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0413
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pixel-based display device, such as an electrowetting display, includes an array of routing dummy pixels that are electrically interconnected in series, forming a conductive routing trace through the pixel area. Within the routing dummy pixel substrate, a source-drain metal layer is electrically isolated from a gate metal layer. A source metal interconnect between the source-drain metal layers of vertically adjacent routing dummy pixels electrically connects the vertically adjacent routing dummy pixels in series. The routing trace conducts a common voltage from a power supply to a common connector pad, facilitating relocation of the pad from the bottom to the top of the display. The pad and the source-drain and reflector metal layers of the routing dummy pixels have the same electric potential, ensuring that the routing dummy pixels remain in an “off” state and appear black throughout operation of the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.