Invention Grant
- Patent Title: Display unit
- Patent Title (中): 显示单元
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Application No.: US12299888Application Date: 2008-03-17
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Publication No.: US08558970B2Publication Date: 2013-10-15
- Inventor: Kei Obata , Akihiro Horii , Hiroshi Mizuno , Noriyuki Hirai , Mitsunari Hoshi
- Applicant: Kei Obata , Akihiro Horii , Hiroshi Mizuno , Noriyuki Hirai , Mitsunari Hoshi
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2007-073621 20070320; JP2008-016472 20080128
- International Application: PCT/JP2008/054872 WO 20080317
- International Announcement: WO2008/114774 WO 20080925
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; F21V7/04 ; G02B5/30 ; G02B27/28

Abstract:
A display unit in which the view angle in the horizontal direction of emitting light is wider than the view angle in the vertical direction thereof, in which the emitting light has a polarization component in the vertical direction viewable with the use of a polarized sunglass, and which is able to improve display luminance is provided. A luminance enhancement film has a plurality of convex sections which extend toward the horizontal direction and are arranged in the direction crossing the extending direction, and in which the refractive index in the extending direction is larger than the refractive index in the arrangement direction. A wave plate changes the polarization direction of light entering the wave plate so that an angle made by a polarization direction of the polarization component in the arrangement direction of the convex section after passing through the wave plate among light passing through the luminance enhancement film and the direction of a polarizing axis a of a first polarizer becomes small. A second polarizer has a polarizing axis b that transmits the polarization component in the vertical direction.
Public/Granted literature
- US20090195728A1 DISPLAY UNIT Public/Granted day:2009-08-06
Information query
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