Invention Grant
- Patent Title: Gray scale inversion reduction or prevention in liquid crystal displays
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Application No.: US12794623Application Date: 2010-06-04
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Publication No.: US10108049B2Publication Date: 2018-10-23
- Inventor: EnkhAmgalan Dorjgotov , Zhibing Ge , Ming Xu , Cheng Chen , Young Bae Park , John Z. Zhong , Wei Chen , Shawn Robert Gettemy
- Applicant: EnkhAmgalan Dorjgotov , Zhibing Ge , Ming Xu , Cheng Chen , Young Bae Park , John Z. Zhong , Wei Chen , Shawn Robert Gettemy
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G02F1/1337

Abstract:
Devices and methods related to high-contrast liquid crystal displays (LCDs) are provided. For example, such an electronic device may include an LCD with two liquid crystal alignment layers not symmetric to one another and upper and lower polarizing layers respectively above and below the alignment layers. Light transmittance through the plurality of pixels may increase monotonically with gray scale voltage. The display may operate using a gray scale level 0 voltage higher than a minimum gray scale level 0 voltage capability of the display. Additionally or alternatively, liquid crystal molecular alignment axes of the two alignment layers may be offset from one another by an angle other than a multiple of 180 degrees. Additionally or alternatively, a first polarizing axis of the upper polarizing layer or a second polarizing axis of the lower polarizing layer, or both, may be neither parallel nor perpendicular to one of the liquid crystal molecular alignment axes.
Public/Granted literature
- US20110298833A1 HIGH CONTRAST LIQUID CRYSTAL DISPLAY Public/Granted day:2011-12-08
Information query
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