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Fixation structure and backlight module using the same

A fixed structure and backlight module technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as increased manufacturing costs, missing screws, and difficulty in ensuring

Active Publication Date: 2008-11-19
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the known way of using multiple screws to lock the printed circuit board not only increases the manufacturing cost, but also prolongs the assembly man-hours of the liquid crystal display device and reduces the production efficiency.
Especially when locking multiple screws, it is easy to miss the locking screw phenomenon
Even a few screws that are not attached to the PCB can prevent the PCB from being evenly secured to the backplane
In addition, it is more difficult to ensure that when each screw is locked to the circuit board, the force applied to the circuit board is consistent
This results in a decrease in product quality, leading to lower yields

Method used

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  • Fixation structure and backlight module using the same
  • Fixation structure and backlight module using the same
  • Fixation structure and backlight module using the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] For the first example, please refer to Figure 1A , is a schematic diagram of the backlight module according to the first embodiment of the present invention. The backlight module 20 includes a circuit board 21 , a light emitting component 22 and a fixing structure 23 . The circuit board 21 has a plurality of openings 21c, an upper surface 21a and a lower surface 21b. The light emitting component 22 is disposed on the circuit board 21 to provide a backlight. The fixing structure 23 is used to fix the circuit board 21 , and includes a backplate 231 and a plurality of hooks 232 . The backboard 231 has a bonding surface 231a. The hooks 232 are disposed on the bonding surface 231 a for locking the circuit board 21 . The hooks 232 pass through the openings 21c so that the adhering surface 231a is affixed to the lower surface 21b. Please also refer to Figure 1B and Figure 1C , Figure 1B for Figure 1A The schematic diagram of the circuit board after moving a distanc...

no. 2 example

[0040] For the second embodiment, please refer to figure 2 , is a schematic diagram of the backlight module according to the second embodiment of the present invention. The backlight module 30 includes a circuit board 21 , a light emitting component 22 and a fixing structure 33 . The fixing structure 33 is used to fix the circuit board 21 , and the fixing structure 33 includes a back plate 231 and a plurality of hooks 332 . The difference between the backlight module 30 of this embodiment and the backlight module 20 of the above-mentioned first embodiment lies in the design of the hooks 332 , and the rest of the similarities will not be repeated here.

[0041] In this embodiment, each hook 332 has a locking protrusion 332a, and the height h2 from the locking protrusion 332a to the back plate 231 is slightly smaller than the thickness w1 of the circuit board 21, so when each hook 332 engages the circuit board At 21 o'clock, the locking bump 332 a abuts against the upper surf...

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PUM

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Abstract

The invention discloses a fixed structure and a backlight module using the structure to fix the circuit board. The circuit board includes: several opening holes, an upper surface and a lower surface. The fixed structure includes: a back board and several grabs, the back board contains an abutted surface. The grabs are mounted on the abutted surface. The grabs through the opening holes to make the abutted surface abut the lower surface, the grabs can move to the wall of hole with opening holes and lock the upper surface to fix the circuit board on the back board.

Description

technical field [0001] The invention relates to a fixing structure, in particular to a fixing structure applied in a backlight module. Background technique [0002] In a backlight module of a general Liquid Crystal Display device (LCD device), cold cathode fluorescent lamps (Cold Cathode Fluorescent Lamp, CCFL) or light emitting diodes (Light Emitting Diode, LED) are used as the backlight source. In a liquid crystal display device using light-emitting diodes as a backlight source, the most common method is to solder the light-emitting diodes to a printed circuit board (PCB), and use screws to lock the printed circuit board on the back of the backlight module. on the back plate. [0003] Since the printed circuit board must be closely attached to the backplane, the heat dissipated by the light-emitting diodes can be smoothly transmitted to the backplane, so as to ensure that the light-emitting diodes will not be damaged by overheating. Therefore, the printed circuit board n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/1333G02F1/13357
Inventor 萧孟佳黄国栋
Owner AU OPTRONICS CORP