TW200824516A - Liquid crystal display module and its flexible printed circuit board - Google Patents

Abstract

The present invention provides a liquid crystal display module and its flexible printed circuit board. The flexible printed circuit board is bent at one end of the frame of the liquid crystal display module, and the bent portion of the flexible printed circuit board is a flexible region. In order to improve the excessive rebounding force generated from the bent flexible printed circuit board, the non-circuit part of the flexible region is disposed with more than one hole to reduce the area of the flexible region and distribute the acting force. When the flexible printed circuit board is bent, it is able to avoid generating excessive rebounding force, thereby improving warpage of the liquid crystal display panel due to the pulling of the printed circuit board.

Description

200824516 IX. Description of the Invention: [Technical Field] The present invention belongs to a liquid crystal flexible printed circuit board and a liquid thereof [Prior Art] = not in the technical field, and particularly relates to a structural design of a crystal display module. For example, a small electronic product such as a mobile phone uses a small-sized liquid crystal display module, and (LCM) 'the basic type can be buckled on the mind, as shown in the fourth figure, including a frame (40), assembled in Frame r

a backlight module (4 3 ) in the wood (40) and a flexible printed circuit board (47) electrically connected to the liquid crystal display panel (45), the liquid crystal display surface & (45), the backlight module 35 ( 43) The progress includes a light guide plate (430), an optical film set (432: and more than one LED (Ught Emitting Diode) (431) disposed on the flexible printed circuit board (47), the optical The diaphragm group (4 3 2 ) is provided with at least one diffusion sheet and two brightness enhancement sheets, and the LEDs (4 3 1 ) are provided in plurality. The flexible printed circuit board (47) is provided with a flexing area (4 7 0) ), as shown in the fifth figure, from the end of the frame (40) down to the lower part of the moonlight module (4 3 ), and then fixed by an iron frame (4 8 ). However, due to the flexible printed circuit The substrate of the board (47) is a soft plastic layer, and its material properties will form a repulsive force after bending and bending, so that the liquid crystal display panel (45) is pulled by the elastic force of the printed circuit board (47). As shown in the sixth figure, in order to avoid the rebound force generated when the printed circuit board (4 7 ) is flexed, the liquid crystal display panel (4 5 ) has a lighter end angle. The 'eyes' industry adopts the two 4, 2008,245,16 methods, which are respectively described as follows: 1) The method of the method is as shown in the figure, and the holding side is set to be concave, forming two of f " £ ( 4 7 0 ) Item-member fine-folding area (in order to reduce the flexing area (4 7 η, two < υ ) ' This method is 'uj area, to *, 4, actually 'can be reduced' - small bomb factory rebound The force 'but' the 'rebound force of the formation is still enough for the whole piece to change the fold area. Guide the big 'night crystal display panel surface

2 · The second method, the surface of the board (4 7 ), is set to overcome its rebound force. It is another tape (4 g and then the printed circuit board ( ) is pasted on the printing 4 7 ). The above is made with a tape (4 9 ).

4 y j will be printed circuit board (4 sticking to the way but a few missing:

1 · Increase working hours and reduce production capacity: — 丄 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了

3. Increasing manufacturing costs··Because of the existing method of increasing the process and man-hours and increasing the material cost by tape bonding, the manufacturing cost is reduced and the competitiveness is reduced. Therefore, the anti-warping design of the flexible printed circuit board of the existing liquid crystal display module is necessary for further improvement. SUMMARY OF THE INVENTION In order to improve the above-mentioned deficiency, the main object of the present invention is to provide a crucible to reduce the repulsive force of a flexible printed circuit board to improve the design of the liquid crystal display panel 5 200824516. Based on the above purposes, the concept of δ and Ye Ye of the Ming and Qing dynasties + seven Mings does not need to be externally forceed (such as tape), and the spleen is directly designed from the spleen to the low-rebound area of the flexible printed circuit board. The type of force. The σ κ side is also the technical means of the above design design: the wireless circuit part of the flexographic printing plate of the flexible printed circuit board, μ 丨 position, and more than one hole, the hole edge is closed. η After implementing the above-mentioned techniques, the specific benefits that can be obtained by the present invention 1 'Because the flexible printed circuit board has more than one hole in the flexing zone, the door can divide the area of the flexing area For two or more areas, on the one hand, the area is reduced, and on the other hand, the force is dispersed, so that the rebound force generated by the bow 柃 can be greatly reduced, thereby improving the phenomenon of the liquid crystal display panel. Structural changes can improve softness

L circuit board lacks excessive resilience 4, the cabinet is missing, it does not need to be taped separately, so it can shorten working hours and improve production efficiency. 3Because the present task does not need to be taped, it can reduce the cost of the tape. 4. The invention can shorten the working hours and reduce the material cost, so that the manufacturing cost can be reduced and the competitiveness can be improved. [Embodiment] Clear reading of the younger brother, - IS! % - a, a picture is not, the present invention can be applied to the small size liquid day and day display module, and the present invention is for the flexible printed circuit board ( 1 〇) Shape design, matching with the frame wood liquid daily display panel and backlight module (not shown in Figure 6 200824516) are well-known, the soft printed circuit is clear. The bend is defined as the fold zone (11) at == one fold, while the flexible printed circuit board (:) ί: and the wireless road location. In order to improve the rebound force generated during 1Q) reading, more than one closed hole is smacked in the flexing zone (the 丄 system is provided with one or a plurality of holes, and the hole is printed on the printed circuit board ( i 〇 2 ) The system s is in soft transmission, and the 的 兮 ... ...... ...... ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” It is possible to reduce the flexing area of the flexible printed circuit 1 and to disperse the printed circuit board CM to solve the rebound problem caused by the soft-shell property. As shown in the third figure, the present invention is The second type of implementation of the printed circuit board (1 phantom deflection area (11A) ... there is a hole in the wireless road (12A), hole (12: 匕 = and: set two is a flexible printed circuit The circuit position of the board (10A) is larger than the number of the hole holes (1 2 A). The effect of the dispersion force is better, and the rebound force can be greatly reduced to improve the phenomenon of the liquid crystal display panel surface. Holes in the folding zone X of the flexible printed circuit board to divide the deflection into two or more zones That is, the effect of reducing the rebound force can be achieved. This is the exemplary mouth of the invention, and is not limited to the number and shape of the holes. The shape of the holes can be round $, ellipse, multi: shape and other geometric shapes' when it is set When it is non-circular or non-elliptical, it is rounded at the end angle to eliminate the phenomenon of stress concentration. 7 The first figure is the soft second figure of the present invention. The soft fourth figure of the present invention is the fifth of the existing liquid. Fig. Existing liquid 200824516 [Simple description of the diagram] The three-dimensional diagram of the p-brushed road board. The third figure after the bending of the brush board is the schematic diagram of the soft printing of the invention. ""The second embodiment of the road plate The three-dimensional exploded view of the display module The partial planar combination of the crystal display module The sixth drawing shows a schematic diagram of the liquid crystal display panel of the existing printed circuit board. [Main component symbol description] (1 0 ) (1 0 A) soft printing Circuit board (1 1 ) ( 1 1 A ) flexing zone (1 2 ) ( 1 2 A ) hole (4 0 ) frame (4 3 ) backlight module

(4 3 〇) light guide plate (4 3 1 ) LED (432) optical film set < 4 7 ) printed circuit board (4 7 0 ) flexing area (4 8 ) iron frame (4 9 ) tape body unintentional Stereo 0 side

Claims (1)

200824516 X. Patent application scope: The ambiguity of the liquid crystal display module 丨# The brush circuit board is distributed with at least one line: the road board, the soft printed wireless road section Η the flexible printed circuit board = the road position is formed - 仏The peripheral edge of the folding area in the wireless road portion is closed. The upper hole is provided, and the hole is printed on the soft plate/the middle hole of the liquid crystal display module according to item 1 of the first item. The flexible package board of the liquid crystal display module according to the first aspect of the invention, wherein the hole is provided with a plurality of holes. The liquid crystal display board of the invention of claim 1 or 2 or 3, wherein the hole has a circular shape. 5(6) The liquid crystal display according to the first or second or third aspect of the invention, wherein the shape of the hole is elliptical. "6. The liquid crystal display of the liquid crystal display according to the second or second or third aspect of the patent application, wherein the hole has a polygonal shape and an end angle of a circular arc. The liquid crystal display module comprises: a frame; a liquid crystal display panel, the liquid crystal display panel is received in the frame; a backlight module, the backlight module is received in the frame, and is attached Relying on a 5 liter liquid crystal display panel; a flexible printed circuit board, one end of the flexible printed circuit board is electrically connected to the liquid crystal display panel, and the middle portion is wound around the frame to be bent to form a 2008-0616 with a flexing area, and The flexible printed circuit board is distributed with at least one line, and a wireless path portion is formed different from the line position, and the flexible portion is provided with at least a hole in the wireless path portion, and the periphery of the hole is closed. The liquid crystal display module of the seventh aspect of the invention, wherein the liquid crystal display module of the seventh aspect of the invention is provided. soft The hole of the printed circuit board is provided with a plurality of holes. The liquid crystal display module of the flexible printed circuit board has a circular shape. _ 1 1. The liquid crystal display handle group according to claim 7 or 8 or 9, wherein the shape of the hole of the flexible printed circuit board is elliptical. 2. As claimed in claim 7 or 8 or 9 In the liquid crystal display group, the shape of the hole of the flexible printed circuit board is polygonal, and the end angle thereof is a circular arc shape. XI. Schema: