Invention Grant
- Patent Title: Displays with elevated backlight efficiency
- Patent Title (中): 显示器具有提升的背光效率
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Application No.: US14684758Application Date: 2015-04-13
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Publication No.: US09568772B2Publication Date: 2017-02-14
- Inventor: Xinyu Zhu , Jun Qi , Meizi Jiao , Nicholas G. Roland , Victor H. Yin , Wei Chen , Ming Xu , Cheng Chen , Zhibing Ge
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Treyz Law Group, P.C.
- Agent G. Victor Treyz; Zachary D. Hadd
- Main IPC: G02F1/13363
- IPC: G02F1/13363 ; G02F1/1335 ; F21V8/00

Abstract:
An electronic device may be provided with a display mounted in a housing. The display may include a liquid crystal display module and a reflective polarizer having an in-plane optical axis. The display may also include a backlight unit that includes a light source, a light guide element, and a reflector film coupled to a backside of the light guide element. The display may also include a light retardation layer such as a quarter wave film. The quarter wave film may be arranged between the reflective polarizer and the reflector film of the backlight unit. Partially polarized light that is output from a front side of the light guide element may have a first component parallel to the in-plane optical axis and a second component perpendicular to the in-plane optical axis of the reflective polarizer. The second component may be reflected from the reflective polarizer.
Public/Granted literature
- US20150248033A1 Displays With Elevated Backlight Efficiency Public/Granted day:2015-09-03
Information query
IPC分类: