TW200532305A - Fixing structure for optical films and plate - Google Patents

Abstract

Providing a structure device for the optical films and plate, which can be applied in the back light module of liquid crystal display. The frame of the back light module has a container and a cannelure. The container includes a cave and is positioned on the surface of the frame. The cannelure is positioned on the lateral side of the frame. The optical films and plate all have holes which corresponding to the cave. The optical films and plate are able to inserted into the cannelure. The fixing device is under the container and passes through the cave and holes of the optical films and plate.

Description

200532305 V. Description of the Invention (1) [Technical Field] This creation provides a fixed structure of an optical film set, which can be used for a backlight module of a liquid crystal display, especially a backlight module of a large-sized liquid crystal display. [Prior art] In the structure of a liquid crystal display, a backlight module is usually included to guide the light source to a desired direction, and the backlight module usually has an optical module group (0 ptica 1) composed of a diffuser plate and a condenser sheet. F i 1 ms) is used to effectively guide the light source. The optical film set needs to be fixedly combined with the frame of the liquid crystal display at the end. Please refer to Figure 1. The current diffuser plate of the backlight module of the liquid crystal display is 1 2 1 and its fixing method. For example: ear edges 1 2 2 are formed at the edges of the diffuser plate 1 2 1, and recesses 1 3 1 are formed at the corresponding positions of the frame 13. When the diffuser plates 1 2 1 are placed on the frame 1 3, the ear edges 1 2 2 It is also placed in the corresponding recessed portion 1 3 1. By engaging the ear flange 1 2 2 with the recessed portion 1 3 li, the diffusion plate 1 2 1 can be fixed on the frame 13 without excessive horizontal displacement. In the same way, similar ear margin structure can also be applied to other optical diaphragms. However, when the size of the liquid crystal display is increased, especially when it is enlarged to more than 30 pairs, the size and weight of the diffuser plate 121 are also increased. Therefore, the joint angle 1 2 3 between the ear flange 1 2 2 and the frame recess 1 3 1 at the engagement contact point will cause excessive shear stress due to the weight of the diffuser plate 1 2 1, making the diffuser plate 12 1 Fracture began to occur at the connection angle 123. [Content] In order to improve the diffusion plate that is easy to occur in large-size liquid crystal displays in the prior art

200532305 V. Description of the invention (2) Fracture problem, this creation provides a fixing structure of an optical film set, which includes: a frame having a receiving portion and a groove, and the receiving portion is located on the surface of the frame and has A hole, and the groove is located on the side of the frame. An optical film group has a through hole corresponding to one of the holes, and the optical film group is embedded in the groove. A fixing device is submerged in the accommodating portion and penetrates the optical film group through the hole and the through hole.

Because the fixed structure of this creation is to embed the optical module group such as a diffuser plate in the groove on the side of the frame, in addition to using the fixing device to penetrate the support provided by the optical film group, the optical film group and the groove The mating two contact surfaces can also provide support. Therefore, it can not only solve the problem of breakage of the optical film group caused by the excessive concentration of shear stress in the conventional fixed structure, but also strengthen the fixing effect of the optical film group. [Embodiment] The first embodiment:

As shown in FIG. 2, the fixing structure of the first embodiment of the present invention includes: a frame 23 having a receiving portion 2 3 3 and a groove 2 3 2, which can be made of plastic material. The accommodating portion 2 3 3 includes a frame-like structure 2 3 0 and a hole 2 3 4, and the frame-like structure 2 3 0 protrudes from the surface of the frame 23, and the frame-like structure 2 3 0 can be integrated with the frame 23 forming. An optical film group 2 2 has a hole 2 2 0 corresponding to one of the holes 2 3 4 of the accommodating portion 2 3 3 and can be inserted into the groove 2 3 2 on the side of the frame 2 3 in a first direction 1. And the optical film group 2 2 is usually composed of a diffusion plate and other optical films.

Page 6 200532305 V. Description of the invention (3) A fixing device 20 with a stack structure, which includes a first extension portion 201 and a second extension portion 202, may be made of a metal material, and the included angle may be a right angle instead of a right angle Appropriate angle.光学 4r_ for optical film Η group

Ri m —The melamine sheet group 22 is inserted into the groove 23 of the frame 232, and the extension of the younger brother of the solid clothing 20 is 201, which can pass through the hole 234 and the hole 22 of the optical film group 22. 〇, along the pore membrane group 22 of 1 to fix the optical film group 22 to the frame; 7 two-way fixed teeth 20 second extension 202, including a protruding adjacent 9nq 〇 & clothing straight s ϋίΒσ 丨 203, and the protruding portion 203 can be engaged with the frame-like structure 2 3 0 of the receiving portion 2 3 3.

As shown in FIG. 3, the shell member 26 in the backlight film group includes the reflection plate 25, the lamp tube 2 4, the frame 2 3, the optical film group 2 2, the fixing screw 2 丨 and the fixing 20 and other components. Within. Among them, the reflection plate 25 and the frame 23 are placed on the inside of the casing 26. The lamp tube 24 is fixed by a lamp tube supporting frame (not shown), and the frame is placed in a space sandwiched between the reflecting plate 25 and the frame 23. The optical film group 22 includes a diffusion plate 221 and a plurality of optical films 2 2 2, which are fixed in the frame 23 by using the fixing structure of this creation. For detailed fixing methods, please refer to the description of FIG. 2 and FIG. 4-A , Will not repeat them here.

As shown in Figure 4-A, 'The fixed structure 2 0 is an optical film group 2 2 including a diffuser 2 2 1 and a plurality of optical films 2 2 2 embedded in a groove 2 3 on the side of the frame 2 3 2 and the position of the hole 2 2 0 of the optical film group 2 2 2 corresponds to the position of the hole 2 3 4 of the accommodating portion 2 3 3, and then the first extension portion 2 0 1 of the fixing device 2 is used to penetrate the accommodating portion 2 The hole 2 3 4 of 3 3 and the hole 2 2 0 of the optical film group, and the second extension portion 2 2 of the fixing device 20 are fixed to the surface of the receiving portion 2 3 3 by a fixing screw 21. In addition, in order to avoid touching the LCD panel (not shown),

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Page 7 200532305 V. Description of the invention (4) Damage caused by touching the fixing device 20, in addition to submerging the fixing device 20 into the accommodating portion 2 3 3, the frame-shaped structure 2 3 0 may further include an elastic member (not shown) (In the figure), and in combination with the LCD panel to protect the LCD panel. Except for the direct support provided by the first extension portion 201 of the fixing device 20 through the hole 2 3 4 and the through hole 2 2 0, the creation is embedded in the optical film group 2 2 When the groove 2 3 2 is formed, the groove 2 3 2 can also provide support on both sides of the optical film group 2 2 to avoid excessive concentration of the shear stress on the fixing device 2 0 due to the excessive weight of the optical film group 2 2. The contact portion of the optical film group 22 causes the optical film group 22 to rupture.

Second embodiment:

This is shown in Figure 4-B. The frame 2 3 has a receiving portion 2 3 3 and a groove 2 3 2, and the receiving portion 2 3 3 is located on the surface of the frame 2 3 and has a hole 2 3 4, and the groove 2 3 2 is located on the side of the frame 2 3 2 3 1. The optical film group 2 2 has a through hole 2 2 0 corresponding to the hole 2 3 4 and is embedded in the groove 2 3 2. The optical diaphragm group 2 2 includes a diffusion plate 2 2 1 and a plurality of optical diaphragms 2 2 2. The fixing device 20 is submerged in the accommodating portion 2 3 3, and the accommodating portion 2 3 3 is integrally formed with the frame 23 and includes a first extension portion 201 and a second extension portion 202. The first extension portion 201 passes through the optical film group 2 2 through the hole 2 3 4 and the through hole 2 2 0. The second extension portion 2 0 2 is located in the receiving portion 2 3 3. The T-shaped structure is formed between the first extension portion 201 and the second extension portion, and an included angle thereof may be a right angle, or another appropriate angle other than a right angle. In addition, in order to avoid damage caused by directly touching the fixing device 20 when assembling the liquid crystal panel (not shown in the figure), in addition to submerging the fixing device 20 into the receiving portion 2 3 3, the receiving portion 2 3 3 is more Can include elastics (not shown) and borrow

Page 8 200532305 V. Description of the invention (5) This is combined with the LCD panel to protect the LCD panel. Although this creation has disclosed several preferred embodiments, it is not intended to limit this creation. Anyone who is familiar with this technology can make various changes and decorations without departing from the spirit and scope of this creation. Therefore, the protection scope of this creation shall be determined by the scope of the attached patent application.

200532305 Brief description of the drawings. Figure 1 is a schematic diagram of a combination of a conventional frame and an optical film group. Figure 2 is a first embodiment of the creation, and a schematic diagram of the assembly of the frame and the optical film group. Later, the cross-sectional schematic diagram along the A-A 'tangent line. Figure 4-A is a partial cross-sectional schematic diagram of the first embodiment of the creation. Figure 4-B is a partial cross-sectional schematic diagram of the second embodiment of the creation. [Symbol Description] 1 First direction 2 Second direction 13 Frame 20 Fixing device 21 Fixing screw 22 Optical diaphragm group 23 Frame 24 Light tube 25 Reflective plate 26 Housing 121 Diffusion plate 122 Ear flange 123 Angle 131 Recessed P 201 First extension 202 Second extension

Page 10 200532305 Brief description of the drawing 203 Convex protrusion 2 2 0 Hole 221 Optical diaphragm 2 2 2 Diffusion plate 2 3 0 Frame structure 231 Side 2 3 2 Groove 2 3 3 Receiving part 2 3 4 Hole

Claims (1)

200532305 6. Scope of patent application 1. A fixed structure of an optical film set can be used for a backlight module of a liquid crystal display. The fixed structure includes: a frame having a receiving portion on the surface of the frame and a groove on the frame On the side, the receiving part has a hole; An optical film group is located on the frame, wherein the optical film group has a hole, and the hole corresponds to the hole of the receiving part on the frame, and the optical film group is embedded in the frame. In the groove of the frame; and a fixing device including a first extension portion which penetrates the through hole of the optical film group and the hole on the frame to fix the optical film Group on this framework. 2. The backlight module according to item 1 of the patent application scope, wherein the optical film group includes a diffusion plate. 3. The backlight module according to item 1 of the patent application scope, wherein the fixing device may be made of a metal material. 4. The backlight module according to item 1 of the scope of patent application, wherein the fixing device is submerged in the receiving portion. 5. The backlight module according to item 1 of the scope of patent application, wherein the accommodating portion includes a frame-like structure, and the frame-like structure protrudes from the surface of the frame. 6. The backlight module according to item 1 of the patent application scope, wherein the frame can be made of plastic material. 7. The backlight module according to item 1 of the scope of patent application, wherein the fixing device further includes a second extension portion, and the second extension portion is located in the receiving portion. 8. The backlight module according to item 7 of the scope of patent application, wherein the fixing device Page 12 200532305 6. Scope of patent application It further includes a fixing screw, and the fixing screw fixes the second extension portion to the surface of the frame. 9. The backlight module according to item 7 of the scope of patent application, wherein the first extension portion and the second extension portion form an L-shaped structure. 10. The backlight module according to item 7 of the scope of patent application, wherein the first extension portion and the second extension portion form a T-shaped structure. 1 1. The backlight module according to item 7 of the scope of patent application, wherein the second extending portion includes a protruding portion, and the protruding portion is engaged with the receiving portion. 1 2. The backlight module according to item 7 of the scope of patent application, wherein the second extension portion is engaged with the receiving portion. 1 3. A liquid crystal display comprising: a frame having a receiving portion on a surface of the frame and a groove on a side of the frame; the receiving portion further has a hole; a liquid crystal panel on a surface of the frame; An optical film group is located on the frame, wherein the optical film group has a hole, and the hole corresponds to the hole of the receiving part on the frame, and the optical film group is embedded in the frame. In the groove of the frame; and a fixing device including a first extension portion which penetrates the through hole of the optical film group and the hole on the frame to fix the optical film Group on this framework. 14. The liquid crystal display according to item 13 of the scope of patent application, wherein the optical film group includes a diffusion plate. 15. The liquid crystal display according to item 13 of the scope of patent application, wherein the fixing device may be made of a metal material. Page 13 200532305 6. Scope of patent application 1 6. According to the liquid crystal display of item 13 of the scope of patent application, the fixing device is submerged in the receiving portion. 17. The liquid crystal display according to item 13 of the scope of patent application, wherein the receiving portion includes an elastic member, and the receiving portion is combined with the liquid crystal panel by the elastic member. 1 8. The LCD monitor according to item 13 of the scope of the patent application, wherein the frame can be made of plastic material. 19. The liquid crystal display according to item 13 of the scope of patent application, wherein the receiving portion includes a frame-like structure, and the frame-like structure protrudes from the surface of the frame. 20. The liquid crystal display according to item 19 of the patent application scope, wherein the liquid crystal panel is located on the surface of the frame-like structure. 2 1. The liquid crystal display according to item 20 of the scope of patent application, wherein the frame structure includes an elastic member, and the frame structure is combined with the liquid crystal panel through the elastic member. 2 2. The liquid crystal display according to item 13 of the scope of patent application, wherein the fixing device includes a second extension portion, and the second extension portion is located in the accommodating portion. 2 3. The liquid crystal display according to item 22 of the scope of patent application, wherein the fixing device includes a fixing screw, and the fixing screw fixes the second extension portion to the surface of the frame. 24. The liquid crystal display according to item 22 of the scope of patent application, wherein the first extension portion and the second extension portion form an L-shaped structure. 25. The liquid crystal display according to item 22 of the scope of patent application, wherein the first extension portion and the second extension portion form a T-shaped structure. Page 14 200532305 VI. Patent application scope 26. According to the liquid crystal display of the 22nd patent application scope, the second extension portion includes a protruding portion, and the protruding portion is engaged with the receiving portion. The liquid crystal display according to item 22 of the scope of patent application, wherein the second extension portion is engaged with the receiving portion. Page 15