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公开(公告)号：US11880059B2
公开(公告)日：2024-01-23
申请号：US17632311
申请日：2020-08-26
发明人： Yasuyuki Takeda
IPC分类号： F21V8/00 , G02F1/13357 , G02F1/1335
CPC分类号： G02B6/0055 , G02B6/0031 , G02B6/0051 , G02B6/0088 , G02F1/133504 , G02F1/133536 , G02F1/133553 , G02F1/133615 , G02B6/0068
摘要： A backlight for providing illumination to a liquid crystal panel includes a reflective polarizer and an extended light source. The extended light source includes a diffuse reflective film assembly and an emission surface disposed between the reflective polarizer and the diffuse reflective film assembly. The extended light source is configured to emit light through the emission surface toward the reflective polarizer. The diffuse reflective film assembly includes a specularly reflective film and an optically diffusive film disposed between the emission surface and the specularly reflective film. The optically diffusive film is bonded to the specularly reflective film at a plurality of discrete spaced apart bonded locations with a total bonding area of less than about 20%.
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公开(公告)号：US20220299698A1
公开(公告)日：2022-09-22
申请号：US17632311
申请日：2020-08-26
发明人： Yasuyuki Takeda
IPC分类号： F21V8/00
摘要： A backlight for providing illumination to a liquid crystal panel includes a reflective polarizer and an extended light source. The extended light source includes a diffuse reflective film assembly and an emission surface disposed between the reflective polarizer and the diffuse reflective film assembly. The extended light source is configured to emit light through the emission surface toward the reflective polarizer. The diffuse reflective film assembly includes a specularly reflective film and an optically diffusive film disposed between the emission surface and the specularly reflective film. The optically diffusive film is bonded to the specularly reflective film at a plurality of discrete spaced apart bonded locations with a total bonding area of less than about 20%.
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