Backlight assembly
A technology of backlight components and backplanes, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing the mechanical strength of the structure, many wirings, and limited effects, so as to protect against electromagnetic interference, strengthen mechanical strength, and prevent The effect of electromagnetic wave spillover
Active Publication Date: 2005-01-05
AU OPTRONICS CORP
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Problems solved by technology
In such a structure, although some protection against electromagnetic interference has been done, it is not ideal.
Because the inclined surface 22 and the extension plate 26 form the groove structure 34 as mentioned above on the back 32 of the metal back plate 12, even if the cover 52 is arranged on the metal back plate 12 to cover the control board 46 and soft flexible printed circuit board 48, when the signal is continuously transmitted between the control board 46 and the circuit signal board (not shown) through the flexible printed circuit board 48, the electromagnetic wave will still escape from the groove structure 34 (such as image 3 As shown by the arrow), it cannot achieve the effect of comprehensive protection
Especially when the surface circuits of the control board 46 and the flexible printed circuit board 48 are very complicated, there are many traces, and the operating frequency is high, the problem is more likely to be highlighted
In response to such a situation, the general solution is to coat silver glue with the effect of protecting electromagnetic interference as needed, but the effect received is still limited.
[0008] In addition, in the direct type backlight assembly 10 of the known technology, the destructive opening 44 is made on the metal back plate 12 first, and then the screw hole 42 is made to lock the control board 36. This method will undoubtedly reduce the structure. body mechanical strength
In some known technologies, the method of directly locking the control board 46 on the metal back plate 12 is also adopted, but the mechanical strength of the structure will still be reduced.
Method used
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[0027] Refer to Figure 4 to Figure 7 , Figure 4 to Figure 7 It is a schematic structural diagram of the direct type backlight assembly 100 in the present invention. As shown in FIG. 4 , the direct-lit backlight assembly 100 of the present invention includes a backplane 102, and a plurality of lamp tubes (not shown) for providing light sources are arranged on the front surface 104 of the backplane 102, and the lamp tubes (not shown) are It is a straight tube or a U tube. The back plate 102 has a first edge 106 and a second edge 108 opposite to each other. A bevel 112 and a bevel 114 are respectively arranged on the first edge 106 and the second edge 108, so as to separate part of the light from the lamp tube (not shown). The emitted light is reflected, and the light enters the optical film (not shown) above, and finally produces a larger and more uniform surface light source. Since the backplane 102 still needs to be assembled to other parts in the display product, an exte...
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The invention is a back light component, which includes a back board, at least one edge of the board has a cant and expanding board, the two form a concave slot structure, the bridge grafting element spans over part of the slot structure, the circuit board is arranged on the bridge grafting element and the back board, and a cover board arranged on the bridge grafting element and the back board and it covers the circuit board, the cover, bridge grafting element and the back board form a sealed space.
Description
technical field [0001] The invention provides a backlight assembly, especially a backlight assembly capable of limiting electromagnetic interference. Background technique [0002] In recent years, various display technologies have continued to flourish. After continuous research and development, new products such as liquid crystal displays, plasma displays, and organic light-emitting diode displays have been gradually commercialized and applied to displays of various sizes and areas. device. At present, the entire display industry is developing towards high brightness and high efficiency in order to produce display products with more commercial value. Among the various key components of the display, the backlight component used to supply the light source has a decisive influence on the overall luminous efficiency of the display. When the backlight component itself has excellent luminous efficiency, it can not only improve the brightness of the display, but also It provides...
Claims
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IPC IPC(8): G02F1/1335
Inventor 赖清坤郭建宏
Owner AU OPTRONICS CORP