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公开(公告)号：US12130462B2
公开(公告)日：2024-10-29
申请号：US18340908
申请日：2023-06-26
发明人： I-Wen Fang , Chia-Ying Chen , Yen-Chang Lee , Chun-Hsien Li
IPC分类号： F21V8/00
CPC分类号： G02B6/0035
摘要： A light guide plate, a backlight module and a display device are provided. The light guide plate includes a main body and an optical layer. The main body has a light-incident surface, a side surface and an optical surface. The light-incident surface and the side surface are respectively connected to the optical surface. The optical layer is correspondingly disposed on the side surface of the main body. In a reflectance characteristic of the optical layer, a total reflectance of the reflectance characteristic is composed of the diffuse reflectance and the parallel reflectance. The percentage value of the parallel reflectance to the total reflectance is less than 45 and larger than 25, including the end point.
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公开(公告)号：US10060597B2
公开(公告)日：2018-08-28
申请号：US15029632
申请日：2015-12-29
发明人： Tsung-Tse Wu , Chun-Hsien Li , Pei-Ling Kao , Yen-Chang Lee
IPC分类号： G09F13/04 , F21V5/04 , F21V5/00 , G02F1/1335 , G02B3/00
CPC分类号： F21V5/04 , F21V5/002 , G02B3/00 , G02B19/0028 , G02B19/0061 , G02B19/0071 , G02F1/133602 , G02F1/133606 , G02F2001/133607
摘要： An optical lens, a backlight module and a display device are provided. The optical lens includes a main body, a light-incident surface, a reflecting surface and a light-emitting surface. The main body has a top portion and a bottom portion. The light-incident surface is recessed into the bottom portion of the main body. The reflecting surface is recessed into the top portion of the main body and opposite to the light-incident surface. The light-emitting surface connects the top portion and the bottom portion, in which the light-emitting surface has plural microstructures. Each of the microstructures has a normal line, and directions of the normal lines are different from each other.
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公开(公告)号：US09829175B2
公开(公告)日：2017-11-28
申请号：US15032627
申请日：2015-12-29
发明人： Tsung-Tse Wu , Chun-Hsien Li , Pei-Ling Kao , Yen-Chang Lee
CPC分类号： F21V5/02 , F21V7/05 , G02B3/06 , G02B6/00 , G02B19/0023 , G02B19/0061 , G02B2003/0093 , G09F13/22
摘要： An optical lens, a backlight module and a display device are provided. The optical lens includes a main body, a light-incident surface, a recessed surface and a light-emitting surface. The main body has a top portion and a bottom portion. The light-incident surface is recessed into the bottom portion of the main body. The recessed surface is recessed into the top portion of the main body and is opposite to the light-incident surface, in which the recessed surface has a plurality of prism surfaces, and each of the prism surfaces has a normal line, and directions of the normal lines are different from each other. The light-emitting surface connects the top portion and the bottom portion.
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