Backlight module and liquid crystal display device
A technology of liquid crystal display device and backlight module, which is applied in optics, nonlinear optics, plane/plate-shaped light guide, etc., can solve the problem of small change of capacitance C, poor stability of pressure touch, and change of gap between optical diaphragm groups. narrow problem
Active Publication Date: 2017-03-22
XIAMEN TIANMA MICRO ELECTRONICS +1
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Problems solved by technology
Due to the tolerance between the actual size of the film in the LCD panel and the backlight module and the design size, as well as between the actual assembly size and the design assembly size, the lower polarizer set adjacent to the backlight module of the LCD panel may be trapped in the backlight. The gap between the liquid crystal display panel and the optical film group in the backlight module is narrowed due to the inner groove of the plastic frame of the module, so that the capacitance change value of the capacitor C becomes smaller when the user applies the same pressing force, resulting in pressure touch stability. poor
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[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below through specific implementation in combination with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts, All fall within the protection scope of the present invention.
[0032] figure 1 It is a top view structural diagram of a backlight module provided by an embodiment of the present invention. It should be noted that, in order to more clearly show the arrangement of the annular support structure 140, figure 1 Only part of the structure of the backlight module 100 is shown. like figure 1 As shown, the backlight module 100 in...
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Abstract
The invention discloses a backlight module and a liquid crystal display device. The backlight module comprises an optical membrane set, an adhesive frame, a conductive frame and an annular supporting structure, wherein the conductive frame is electrically connected with the input end of a reference voltage and stuck to the bottom face of the adhesive frame; the optical membrane set and the annular supporting structure are arranged inside a containing space formed by the adhesive frame and the conductive frame. The annular supporting structure is arranged between the optical membrane set and the conductive frame and extends along the edge of the optical membrane set. According to the technical scheme, the phenomenon that a pressure touch signal is not stable when a gap between a liquid crystal display panel and the optical membrane set is reduced due to a material dimensional tolerance or assembling tolerance is avoided, and the advantage that pressure touch stability is improved is achieved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a liquid crystal display device. Background technique [0002] With the continuous development of display technology, pressure touch technology has been gradually applied to various electronic devices. Compared with traditional planar touch technology, pressure touch technology has added Z-axis function, which can realize 3D touch effect and provide Users bring a more diverse operating experience. [0003] The liquid crystal pressure touch device in the prior art includes two pressure touch electrodes. The pressure touch function is realized by detecting the change in the capacitance C of the two pressure touch electrodes. One of the pressure touch electrodes is set on the liquid crystal display. In the panel, another pressure touch electrode is multiplexed by the iron frame in the backlight module. Due to the tolerance between the actual size of the fil...
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Patent Timeline
Login to View More IPC IPC(8): G02F1/1333G02F1/13357
CPCG02F1/133308G02F1/13338G02F1/133608G02F1/1336G02F1/133314G02F1/133602G02B6/0011G02F2201/34
Inventor 谢天旭
Owner XIAMEN TIANMA MICRO ELECTRONICS