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公开(公告)号：US10690838B2
公开(公告)日：2020-06-23
申请号：US15735030
申请日：2017-11-23
IPC: F21V21/00 , F21V8/00 , G02F1/1333 , H05K1/02 , H05K1/18
Abstract: A liquid crystal display device and a backlight module are provided. The backlight module includes a frame, a light source, and a light guide plate. The light guide plate includes a light incident surface, a bottom portion and a top portion. The frame includes a lateral plate disposed opposite to the light incident surface. The light source includes a flexible printed circuit and a LED, and the flexible printed circuit includes a vertical portion and a first horizontal portion, wherein the vertical portion is disposed between the lateral plate and the light incident surface, the LED is disposed on a surface of the vertical portion facing the light guide plate, and the first horizontal portion is a part of the vertical portion bending toward the light guide plate. By practice of the disclosure, the narrow border design of the liquid crystal display device could be achieved.
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公开(公告)号：US20190025646A1
公开(公告)日：2019-01-24
申请号：US15577033
申请日：2017-08-31
IPC: G02F1/1335 , H01L27/12 , F21V8/00
Abstract: The present disclosure provides a backlight module, which includes: a transparent light guiding body having a light incidence side surface and a sealed accommodating cavity; a plurality of quantum dots accommodated in the accommodating cavity; and a light source disposed adjacent to the light incidence side surface. The present disclosure also provides a liquid crystal display having the backlight module. The present disclosure prevent the quantum dot material from being affected by moisture and oxygen by sealing the quantum dot materials using glass flat plates, thereby facilitating the display of the liquid crystal display.
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公开(公告)号：US10185074B2
公开(公告)日：2019-01-22
申请号：US15112525
申请日：2016-06-21
Inventor： Yan Cheng , Shih-hsiang Chen , Mei Han
IPC: F21V7/04 , F21V8/00 , G02F1/13357 , G02F1/1368 , G02F1/1362 , G02F1/1335
Abstract: The present invention provides a backlight module used in liquid crystal displays. The backlight module includes a quantum dots film, a light guide plate and a light source module. A light is emitted from the light source module enter into the quantum dots film through the light guide plate. The quantum dots film comprises an active region and an inactive region. The light source module includes a blue light source and a green light source. The blue light source is corresponding to the active region, and the green light source is corresponding to the inactive region. The present invention further provides a backlight module used in liquid crystal displays. The present invention provides a backlight module and quantum dots film of liquid crystal display which can resolve a defect of quantum dots film fails in the cutting position, and the quantum dots film has high color gamut conversion.
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公开(公告)号：US20180106938A1
公开(公告)日：2018-04-19
申请号：US15112430
申请日：2016-05-23
IPC: F21V8/00
CPC classification number: G02B6/005 , G02B6/0026 , G02B6/0031 , G02B6/0055 , G02B6/0073 , G02F1/133615 , G02F1/133621 , G02F2001/133614 , G02F2202/36 , H01L33/50
Abstract: The present invention provides a quantum dot backlight module, which includes a quantum dot film arranged on a side of the light guide plate that is distant from the light reflector board and an optical coating layer arranged on a side of the quantum dot film that is distant from the light guide plate, or alternatively includes a quantum dot tube arranged between a light guide plate and a backlight source and an optical coating layer arranged on a side of the light guide plate that is adjacent to the quantum dot tube, so that for the purpose of emission of white backlighting, the optical coating layer is used to reflect a part of monochromatic light emitting from the backlight source toward the quantum dot film or the quantum dot tube for re-excitation for light emission so as to increase excitation performance of the quantum dot film or the quantum dot tube, improve brightness and gamut of the quantum dot backlight module, and enhance product quality.
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