Invention Grant
- Patent Title: High dynamic range displays using filterless LCD(s) for increasing contrast and resolution
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Application No.: US13472076Application Date: 2012-05-15
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Publication No.: US09772530B2Publication Date: 2017-09-26
- Inventor: John Gilbert
- Applicant: John Gilbert
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- Main IPC: G02F1/1347
- IPC: G02F1/1347 ; G09G3/34 ; H04N13/04 ; G02F1/1335

Abstract:
A display provides increased contrast and resolution via first LCD panel energized to generate an image and a second LCD panel configured to increase contrast of the image. The second panel is an LCD panel without color filters and is configured to increase contrast by decreasing black levels of dark portions of images using polarization rotation and filtration. The second LCD panel may have higher resolution than the first LCD panel. A half wave plate and/or film is placed in between the first and the second panel. The panels may be directly illuminated or edge lit, and may be globally or locally dimmed lights that may also include individual control of color intensities for each image or frame displayed.
Public/Granted literature
- US20120224121A1 High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution Public/Granted day:2012-09-06
Information query
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