Invention Application
- Patent Title: Method and device to improve backlight uniformity
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Application No.: US10940988Application Date: 2004-09-15
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Publication No.: US20060056197A1Publication Date: 2006-03-16
- Inventor: James Robinson , Marc Drader , Michael Purdy
- Applicant: James Robinson , Marc Drader , Michael Purdy
- Main IPC: F21V7/04
- IPC: F21V7/04

Abstract:
A hot spot filter for a light guide is created by taking an image of the light output pattern of an illuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light guide. The hot spot filter may be incorporated into the image display by adjusting the grey scale of individual pixels to provide sufficient compensation.
Public/Granted literature
- US07113670B2 Method and device to improve backlight uniformity Public/Granted day:2006-09-26
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