Invention Grant
- Patent Title: Liquid crystal variable drive voltage
-
Application No.: US14838248Application Date: 2015-08-27
-
Publication No.: US09958712B2Publication Date: 2018-05-01
- Inventor: David A. Chavez , Michael A. Cheponis , Mark F. Flynn
- Applicant: zSpace, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: zSpace, Inc.
- Current Assignee: zSpace, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Meyertons Hood Kivlin Kowert & Goetzel, P.C.
- Agent Jeffrey C. Hood; Brian E. Moore
- Main IPC: G02F1/133
- IPC: G02F1/133 ; G09G3/36 ; G09G3/00 ; G09G3/34 ; H04N13/04

Abstract:
A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 μs. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
Public/Granted literature
- US20150370111A1 Liquid Crystal Variable Drive Voltage Public/Granted day:2015-12-24
Information query