Backlight module and liquid crystal display device using the backlight module
A technology of a liquid crystal display device and a backlight module, which is applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve problems such as increasing the thickness of the liquid crystal display device, increasing the thickness of the backlight module 100, and improving the heat dissipation effect , to achieve the effect of thinning
Active Publication Date: 2016-01-20
CHANGSHA HKC OPTOELECTRONICS CO LTD
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Problems solved by technology
Although this improves the heat dissipation effect, it increases the thickness of the backlight module 100, thereby increasing the thickness of the entire liquid crystal display device, which is contrary to the current thinning trend.
Method used
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[0023] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0024] see figure 2 , the present invention provides a backlight module, comprising: a backplane 2, a light guide plate 4 arranged in the backplane 2, a backlight 6 arranged in the backplane 2, a The heat dissipation plate 8 and the bottom reflection sheet 9 disposed between the light guide plate 4 and the back plate 2 . The light emitted by the backlight source 6 is reflected by the bottom reflection sheet 9 or directly enters the light guide plate 4, and propagates in the light guide plate 4, thereby turning the point light source into a surface light source.
[0025] Specifically, see figure 2 , the backplane 2 includes a bottom plate 22 and a side plate 24 vertically connected to the bottom plate 22, the bottom plate 22 of the backplan...
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Provided are a backlight module (20) and a liquid crystal display device using the backlight module (20). The backlight module (20) comprises a back plate (2), a light guide plate (4) arranged in the back plate (2), a backlight source (6) arranged in the back plate (2) and a heat dissipation plate (8) arranged between the backlight source (6) and the back plate (2), wherein the back plate (2) comprises a bottom plate (22) and a side plate (24) vertically connected to the bottom plate (22); the backlight source (6) comprises a PCB plate (62) and an LED chip (64) forged on the PCB plate (62), the PCB plate (62) being mounted on the bottom plate (22) of the back plate (2) and the heat dissipation plate (8), and the PCB plate (62) comprising a mounting portion (622) and a lapping portion (624) connected to the mounting portion (622); the heat dissipation plate (8) comprises a supporting portion (82) and a carrying portion (84) connected to the supporting portion (82), the lapping portion (624) being lapped on the carrying portion (84); and the light guide plate (4) is borne on the supporting portion (82) and the lapping portion (624). Therefore, the purposes of a simple structure, a good heat dissipation effect, a small thickness and a narrow frame can be achieved.
Description
technical field [0001] The invention relates to the field of plane display, in particular to a backlight module and a liquid crystal display device using the backlight module. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. The structure of a traditional liquid crystal panel is composed of a color filter substrate (ColorFilter), a thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate), and a liquid crystal layer (LiquidCrystalLayer) arranged between t...
Claims
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IPC IPC(8): F21S8/00F21V19/00F21V17/10G02F1/13357F21Y101/02
CPCG02B6/0073G02B6/0083G02B6/0088G02F1/133628G02B6/005G02B6/0085G02B6/009G02F1/133308G02F1/1336G02F1/13332
Inventor 俞刚
Owner CHANGSHA HKC OPTOELECTRONICS CO LTD