Liquid crystal dispensing apparatus
US7373958B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13415
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal dispensing apparatus facilitating detection of vapor within liquid crystal material, facilitating removal of residual liquid crystal material, and facilitating precise control of predetermined dispensing positions and dispensing amounts includes a container containing liquid crystal material, a discharge pump drawing in and discharging liquid crystal material, and a nozzle dispensing liquid crystal material, discharged from the discharge pump, onto a substrate. The discharge pump includes a case, a window at a lower portion of the case, a cylinder within the case, a piston rotatably arranged within the cylinder and having a groove for drawing in and discharging liquid crystal material, and a suction opening and a discharge opening through which liquid crystal material is drawn into and discharged from with respect to the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.