Backlight modules and liquid crystal devices (LCDS)

    公开(公告)号:US09933557B2

    公开(公告)日:2018-04-03

    申请号:US14891740

    申请日:2015-04-16

    CPC classification number: G02B6/0055 G02B6/0065 G02B6/0088

    Abstract: A backlight module and a liquid crystal device (LCD) are disclosed. The backlight module includes a light guiding plate, a plastic frame adjacent to a lateral side of the light guiding plate, and a reflective sheet. The reflective sheet includes a first portion, a second portion, and a third portion. The first portion of the reflective sheet is arranged below a bottom of the light guiding plate and/or a bottom of the plastic frame, the second portion of the reflective sheet adheres to a lateral side of the plastic frame, and the lateral side faces away from the light guiding plate, and the third portion of the reflective sheet adheres to a top surface of the plastic frame. With such configuration, the reflective sheet may be stably fixed on the plastic frame to prevent the reflective sheet from being detached.

    Light guide plate and backlight module
    22.
    发明授权
    Light guide plate and backlight module 有权
    导光板和背光模组

    公开(公告)号:US09507071B1

    公开(公告)日:2016-11-29

    申请号:US14761623

    申请日:2015-06-25

    CPC classification number: G02B6/002 G02B6/0088

    Abstract: A light guide plate has a light incident surface having an arc configuration and also includes upper and lower surfaces that are respectively provided with a first slope surface and a second slope surface, so that light passes through and is converged by the arc light incident surface and is subjected to total internal reflection at the first and second slope surfaces to have the light guided into the light guide plate and then projecting out through a light exit surface. The light guide plate demonstrates an excellent effect of convergence for light of all angles, so that the light guide plate can be structured thinner without deteriorating light coupling efficiency. Also provided is a backlight module, which involves the light guide plate.

    Abstract translation: 导光板具有具有弧形构造的光入射面,还包括分别设置有第一倾斜面和第二倾斜面的上表面和下表面,使得光通过弧光入射面而会聚,并且 在第一和第二倾斜表面处经受全内反射,以使光被引导到导光板中,然后通过光出射表面突出。 导光板表现出对所有角度的光的收敛的优异效果,使得导光板可以结构更薄,而不会降低光耦合效率。 还提供了涉及导光板的背光模块。

    Liquid crystal display device and backlight module

    公开(公告)号:US10690838B2

    公开(公告)日:2020-06-23

    申请号:US15735030

    申请日:2017-11-23

    Inventor: Mei Han Gege Zhou

    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.

    Backlight module comprising a light guide plate having a cavity and a plurality of quantum dots confined within the cavity

    公开(公告)号:US10591775B2

    公开(公告)日:2020-03-17

    申请号:US14775798

    申请日:2015-08-20

    Inventor: Gege Zhou

    Abstract: A light guide plate includes a bottom surface and a light emitting surface disposed opposite to the bottom surface. The light emitting surface sags down and forms a hollow, which is filled with a plurality of light-emitting quantum dots (QDs), with the light emitting surface capped with a cover film, so to seal the the plurality of light-emitting QDs in the hollow. The present invention also proposes a backlight module having the light guide plate and a liquid crystal display using the backlight module. The present invention forms a hollow on the top surface of a flat body of the light guide plate. The hollow is filled with light-emitting QDs, which can enhance the color gamut of the display backlight. At the same time, the side walls surrounding the hollow can be narrowed so that it is easier to realize the narrow edge design of the backlight module.

    Mold-frame-free liquid crystal display device and assembly method thereof

    公开(公告)号:US10048435B2

    公开(公告)日:2018-08-14

    申请号:US15111823

    申请日:2016-05-23

    Abstract: The present invention provides a mold-frame-free liquid crystal display device and an assembly method thereof, in which a lower surface of a liquid crystal display panel (2) is provided with a first double-sized adhesive tape (110) that circumferentially surrounds an effective display area (21) and an optical film assembly (15) is adhesively attached to the first double-sized adhesive tape (110) and a reflector plate (14) and a light guide plate (11) are sequentially disposed inside the terminal frame (4) and, finally, the liquid crystal display panel (2) that includes the optical film assembly (15) attached thereto and the terminal frame (4) with the reflector plate (14) and the light guide plate (11) disposed therein are assembled together, whereby a backlighting mold frame can be omitted, the cost can be reduced, and a bezel width of a liquid crystal display device can be effectively reduced to realize narrow bezel of the liquid crystal display device, increase product competition power, allow the backlight module to be assembled with the liquid crystal display panel and the terminal frame to increase the degree of integration of the liquid crystal display panel and improve accuracy of assembly.

    BACKLIGHT MODULE AND ASSEMBLY METHOD THEREOF
    28.
    发明申请

    公开(公告)号:US20180107062A1

    公开(公告)日:2018-04-19

    申请号:US15112188

    申请日:2016-05-18

    CPC classification number: G02F1/133602 G02B6/0025 G02B6/0091 G02F1/133308

    Abstract: The present invention provides a backlight module and an assembly method thereof. The backlight module is structured such that a first double-sized adhesive tape (10) that adhesively bonds a light-source flexible circuit board (5) and a light guide plate (3) is extended in length thereof so that the first double-sized adhesive tape (10) adhesively bonds a diffuser plate (61), the light-source flexible circuit board (5), and the light guide plate (3) together. In comparison with the prior art, the fixation of the diffuser plate (61) can be achieved without adding a connection member and can effectively prevent sliding of the diffuser plate (61) to cause abrasion with the light guide plate (3) that affects optical taste of backlighting and has a simple structure and reduced manufacturing cost. The assembly method of the backlight module allows for easy and efficient completion of the assembly of the backlight module so that the manufacturing cost is reduced and the production efficiency is high.

    Optical film, backlight module, and display device

    公开(公告)号:US09897739B2

    公开(公告)日:2018-02-20

    申请号:US14438630

    申请日:2015-04-09

    Inventor: Jie Zeng Gege Zhou

    CPC classification number: G02B6/005 G02B6/0055 G02B6/0088

    Abstract: Provided are an optical film and a backlight module. The backlight module includes a backboard, a light guide plate and the optical film. The backboard includes a bottom plate and two side plates mounted to the bottom plate having outside surfaces. The optical film includes a first film layer and a second film layer stacked on the first film layer. The first film layer has two opposite lateral edges including positioning tabs extending therefrom in a direction away from the first film layer. The light guide plate and the optical film are mounted on the backboard. The optical film is positioned on the light guide plate with the second film layer engaging the light guide plate. The positioning tabs cover surfaces of the side plates distant from the bottom plate and is folded to attach to the outside surfaces of the side plates. A display device is also provided.

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