Invention Grant
- Patent Title: Directional backlights with light emitting element packages
- Patent Title (中): 具有发光元件封装的定向背光灯
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Application No.: US14538411Application Date: 2014-11-11
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Publication No.: US09551825B2Publication Date: 2017-01-24
- Inventor: Graham J. Woodgate , Michael G. Robinson , Jonathan Harrold
- Applicant: RealD Inc.
- Applicant Address: US CA Beverly Hills
- Assignee: RealD Spark, LLC
- Current Assignee: RealD Spark, LLC
- Current Assignee Address: US CA Beverly Hills
- Agent Penny L. Lowry; Neil G. J. Mothew
- Main IPC: G02B6/43
- IPC: G02B6/43 ; H01L25/075 ; F21V8/00 ; G02B27/22 ; H01L27/15 ; H01L29/866 ; H01L33/48 ; H01L33/50 ; H01L33/62 ; H01L25/16 ; H01L33/64

Abstract:
A light emitting diode package for a directional display may comprise light emitting diodes and a protection diode. The protection diode may be arranged in a well that is at a different location to the well that the light emitting diodes are arranged. The directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. The brightness of the directional display can be increased. An efficient and bright directional display system can be achieved. Efficient light baffling for light escaping from the edge of the waveguide is achieved through light deflecting extraction films.
Public/Granted literature
- US20150177447A1 Directional backlights with light emitting element packages Public/Granted day:2015-06-25
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