Title:
Art of dual modulation accompanied by optical conversion
Document Type and Number:
Japanese Patent JP6236188
Kind Code:
B2
Abstract:
Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine transmission of the second light through individual color subpixels of the display. These LCD modulation drive signals can be adjusted based on one or more light field simulations to account for non-uniform, spatial color shifts. Alternatively, one or more light field simulations based on a uniformity assumption determine intermediate LCD modulation drive signals. A compensation field simulation, using backlight drive signals, is then used to adjust the intermediate LCD modulation drive signal for color correction.
Inventors:
Wang, Chun Qi
Ninan, hideout
Ninan, hideout
Application Number:
JP2017510540A
Publication Date:
November 22, 2017
Filing Date:
August 20, 2015
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
G02F1/133; G02F1/13357; G09G3/20; G09G3/34; G09G3/36
Domestic Patent References:
| JP2014500985A | ||||
| JP2012505435A | ||||
| JP2012500996A | ||||
| JP2008507735A | ||||
| JP2007058209A | ||||
| JP2008096547A | ||||
| JP2013161053A |
Foreign References:
| US20130293596 | ||||
| US20100214282 | ||||
| WO2009101727A1 | ||||
| WO2009041574A1 | ||||
| US20110122170 |
Attorney, Agent or Firm:
Seiji Okuda
Osamu Kita
Hidetaka Okabe
Tohru Kawakita
Murase Nariyasu
Osamu Kita
Hidetaka Okabe
Tohru Kawakita
Murase Nariyasu