TWI554716B - Fixing component for light guide plate - Google Patents

Description

Fixing component of light guide plate

The present invention relates to a fixing assembly, and more particularly to a fixing assembly for a light guide plate of a backlight module.

In the field of flat display, the traditional cathode ray tube (CRT) display has been gradually improved by liquid crystal display (Liquid Crystal) due to its high radiation, high power consumption, large volume, low resolution and high quality. Replaced by Display, LCD). Since its inception, liquid crystal displays have been known for their thinness, fashion, environmental protection, energy saving, high resolution and long service life. However, since the liquid crystal display is in the early stage of product development, the product yield is low, and the market sales scale is small, so its price has always been high. Over the past few years, with the development of the market, LCD monitors have gradually entered a growth period, and their industry scale has increased in volume. Large-screen LCD TVs (23 inches or more) have become mainstream products for high-end color TVs. Thin-Film Transistor LCD (TFT-LCD) has become the most important economic growth point in the flat panel display market. In order to meet the functional and appearance requirements of the liquid crystal display, the backlight module design used in the liquid crystal display is also increasingly diversified.

A general backlight module is composed of a casing, a light guide plate, a reflection sheet and a set of light emitting diode modules (ie, light bars). The light guide plate and the reflective sheet are respectively stacked on the bottom plate of the casing; and the light emitting diode module is composed of a plurality of light emitting diodes disposed on the printed circuit board and disposed on the light guide plate. Side or directly below. In a large-size panel, the fixed design of the light guide plate generally uses a copper post or a retaining wall to position the light guide plate, wherein the retaining wall can be made of metal or plastic material, however, the light guide plate is fixed by a copper post or a retaining wall. Appropriate clearance must be reserved for the expansion and contraction of the light guide plate due to thermal expansion and contraction. However, the tolerance of the gap is not easy to accurately control, so it is easy to cause the light guide plate to be transported or inflated in the internal structure of the backlight module. The shrinkage causes a slight movement, and thus an optical shift occurs, which affects the light output quality of the backlight module.

Therefore, it is necessary to provide a fixing assembly of a light guide plate to solve the problems of the above conventional techniques.

The main purpose of the present invention is to provide a fixing assembly for a light guide plate, wherein the fixing component is inserted into a notch portion of the light guide plate by a pair of pressing pieces, and the pressing pieces are elastically pressed against the notch portion. The pressing surface can reduce the gap between the fixing component and the pressing surface of the notch of the light guide plate, thereby preventing the light guide plate and the fixing component from being slightly moved relative to each other.

For the purpose of the present invention, the present invention provides a fixing assembly for a light guide plate for combining between a light guide plate and a frame, the fixing assembly comprising a body, a flange, a block, a fitting strip and a pressing piece, wherein the flange is horizontally protruded from a side edge of the body for abutting against a top surface of the frame; the block extends downward from the body for abutting a card slot of the frame; the fitting strip extends downward from the body and is spaced apart from the block; the pressing pieces are respectively disposed on both sides of the fitting strip for elastically pressing the guide a notch of the light panel.

In an embodiment of the invention, each of the pressing pieces has an elastically deformable slit between the adjacent fitting strips.

In an embodiment of the invention, the bottom of the pressing piece and the fitting strip The bottom is flush.

In an embodiment of the invention, the bottom of the pressing sheets is higher than the bottom of the fitting strip.

In an embodiment of the invention, each of the urging tabs extends downwardly and has a reduced thickness.

In an embodiment of the invention, each of the pressing pieces has a bottom edge having an arc shape.

In one embodiment of the invention, the transverse width of the pressing sheets is the same as a lateral width of the mating strip.

In an embodiment of the invention, a lateral width of the pressing sheets cooperates with a lateral depth of the notch portion of the light guide plate.

In an embodiment of the invention, a vertical length of the pressing sheets is greater than a vertical height of the notch portion of the light guide plate.

In an embodiment of the invention, each of the tensioning sheets is made of plastic or rubber.

As described above, the pressing members are placed in the notch portion of the light guide plate, and the pressing members are elastically pressed against the pressing surface of the notch portion, thereby reducing the fixing assembly and the light guide plate. The gap between the notch portions is forced to avoid a slight relative movement between the fixing component and the light guide plate, and the optical offset problem can be overcome to ensure the light quality of the backlight module; The elastic compression of the tight piece can also avoid the problem of tolerance variation of the light guide plate due to expansion and contraction caused by heat expansion and contraction.

100‧‧‧Fixed components

101‧‧‧Light guide plate

102‧‧‧ frame

103‧‧‧ card slot

104‧‧‧Gap section

105‧‧‧ Forced face

2‧‧‧ Ontology

3‧‧‧Flange

4‧‧‧ card block

5‧‧‧Chicken strips

6‧‧‧ forced film

60‧‧‧Elastic deformation slit

1 is a perspective view of a fixing assembly of a light guide plate according to an embodiment of the present invention.

2 is a side view of a fixing assembly of a light guide plate according to an embodiment of the present invention.

Fig. 3 is a perspective view showing another perspective of a fixing assembly of a light guide plate according to an embodiment of the present invention.

Fig. 4 is an exploded view showing the state of use of the fixing member of the light guide plate according to an embodiment of the present invention.

Fig. 5 is a combination view showing a state of use of a fixing member of a light guide plate according to an embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt; Furthermore, the directional terms mentioned in the present invention, such as upper, lower, top, bottom, front, rear, left, right, inner, outer, side, surrounding, central, horizontal, horizontal, vertical, longitudinal, axial, Radial, uppermost or lowermost, etc., only refer to the direction of the additional schema. Therefore, the directional terminology used is for the purpose of illustration and understanding of the invention.

Referring to Figures 1, 2, 3 and 4, a fixing assembly 100 for a light guide plate according to an embodiment of the present invention is used to combine between the outer edges of a light guide plate 101 and the inner edges of a frame 102. And further facilitating subsequent assembly into a backlight module (not shown), wherein the fixing assembly 100 includes a body 2, a flange 3, a card block 4, a fitting strip 5 and two pressing pieces 6, and the present invention The detailed construction, assembly relationship, and operation principle of the components of the fixing assembly 100 are described in detail below. In addition, in the present embodiment, "longitudinal" means the longitudinal direction of the pressing piece 6, "lateral" means the width direction of the pressing piece 6, and "vertical direction" Refers to the height of the forced piece 6 The "outer edge" of the fixing component 100 refers to an edge near one side of the frame 102; and the "inner edge" of the fixing component 100 refers to an edge near the other side of the light guide plate 101. This is indicated first.

Referring to Figures 1, 2 and 3, the body 2 is made of plastic or rubber, and the flange 3 is integrally formed with the body 2, and as shown in Fig. 2, the flange 3 is horizontal. The body 2 is disposed on an outer edge of the frame 102 for abutting against a top surface of the frame 102. In the embodiment, the frame 102 is usually made of a metal material by stamping. Made.

With reference to the first, second, and third figures, the block 4 is integrally formed with the body 2, and extends from the bottom of the body 2 adjacent to the outer half of the frame 102 to the lower portion shown in FIG. The card block 4 is formed to extend into and abut against a slot 103 of the frame 102.

With reference to the first, second, and third figures, the fitting strip 5 is integrally formed with the body 2, and extends downward from the bottom of the body 2 adjacent to the inner half of the light guide plate 101, and the fitting strip 5 is spaced apart from the block 4 by a space between the fitting strip 5 and the block 4, and the bottom of the fitting strip 5 is preferably flush with the bottom of the block 4.

Furthermore, the pressing pieces 6 are integrally formed with the body 2, and the pressing pieces 6 are respectively disposed on both sides of the fitting strip 5. Since the pressing pieces 6 are made of plastic or rubber, the pressing pieces 6 have an elastic deformation margin and can be elastically pressed against a notch portion 104 of the light guiding plate 101. More specifically, each of the pressing pieces 6 has a side edge having an arc shape, and each of the pressing pieces 6 and the adjacent fitting strip 5 has an elastic deformation slit 60 therebetween. The pressing piece 6 can be elastically deformed to a small extent toward the fitting strip. In addition, in the embodiment, the notch portion 104 of the light guide plate 101 has a rectangular notch, and each of the two sides has a pressing surface 105 (inner side wall).

In this embodiment, the bottom of the pressing piece 6 is compared with the bottom of the fitting strip 5 Preferably, the bottom of the pressing piece 6 is also higher than the bottom of the fitting strip in the vertical direction of the fixing member 100, but is not limited by this embodiment. In addition, as shown in FIG. 2, in the longitudinal direction of the fixing assembly 100, each of the pressing pieces 6 extends downward and the thickness is tapered; as shown in FIG. 3, in the width direction of the fixing assembly 100. a lateral width of the pressing piece is substantially the same as a lateral width of the fitting strip 5; and as shown in FIG. 4, a lateral width of the pressing piece 6 and the notch portion 104 of the light guiding plate 101 A lateral depth (width) is matched, wherein a vertical length of the pressing pieces 6 is greater than a vertical height of the notch portion 104 of the light guide plate 101.

Referring to the fourth and fifth embodiments, according to the above configuration, when the body 2 is placed in the notch portion 104 of the light guide plate 101, the pressing pieces 6 abut against the pressing faces 105, respectively. And the elastic deformation slits 60 are also relatively narrowed, and the fixing assembly 100 is pressed against the notch portion 104; The other side of the fixing component 100 is combined on the frame body 102, that is, the card block 4 protrudes into the card slot 103 of the frame body 102, and the flange 3 is abutted against the top of the frame body 102. The outer edge of the light guide plate 101 and the inner edge of the frame 102 are combined by a plurality of media of the fixing assembly 100, thereby completing preliminary assembly of the light guide plate 101 and the frame 102. operation.

Continuing with reference to Figures 4 and 5, as described above, by the abutment of the pressing pieces 6 against the pressing faces 105, the gap between the fixing assembly 100 and the light guide plate 101 can be reduced, thereby avoiding The fixing component 100 generates a slight movement in the notch portion 104 of the light guide plate, that is, avoids relative movement between the fixing component 100 and the light guide plate 101, thereby overcoming the problem of optical offset to ensure the light quality of the backlight module. At the same time, the pressing pieces 6 can be elastically compressed and the elastic deformation slit 60 can also avoid the problem that the light guide plate 101 is expanded and contracted due to thermal expansion and contraction to cause tolerance variation.

The present invention has been disclosed in its preferred embodiments, and is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100‧‧‧Fixed components

2‧‧‧ Ontology

3‧‧‧Flange

4‧‧‧ card block

5‧‧‧Chicken strips

6‧‧‧ forced film

60‧‧‧Elastic deformation slit

Claims (10)

A fixing assembly for a light guide plate is configured to be combined between a light guide plate and a frame, the fixing assembly comprising: a body; a flange horizontally protruding on a side edge of the body for abutting against the a top surface of the frame; a card block extending downwardly from the body for abutting against a slot of the frame; a fitting strip extending downwardly from the body and associated with the block And two pressing pieces are respectively disposed on both sides of the fitting strip for elastically pressing against a notch of the light guide plate. The fixing assembly of the light guide plate according to the first aspect of the patent application, wherein each of the pressing pieces and the adjacent one of the fitting strips has an elastic deformation slit. The fixing assembly of the light guide plate according to the first aspect of the patent application, wherein the bottom of the pressing pieces is flush with the bottom of the fitting strip. The fixing assembly of the light guide plate according to the first aspect of the patent application, wherein the bottom of the pressing piece is higher than the bottom of the fitting strip. A fixing assembly for a light guide plate according to the first aspect of the patent application, wherein each of the pressing pieces extends downward and has a reduced thickness. According to the fixing assembly of the light guide plate of claim 1, wherein the bottom of each of the pressing pieces has a side edge having an arc shape. A fixing assembly for a light guide plate according to the first aspect of the invention, wherein a lateral width of the pressing pieces is the same as a lateral width of the fitting strip. A fixing assembly for a light guide plate according to the first aspect of the invention, wherein a lateral width of the pressing sheets matches a lateral depth of the notch portion of the light guide plate. The fixing assembly of the light guide plate according to claim 1, wherein a vertical length of the pressing pieces is greater than a vertical height of the notch portion of the light guiding plate. According to the fixing assembly of the light guide plate of claim 1, wherein each of the pressing pieces is made of plastic or rubber.