TWI470311B - Fastening structure and back light module - Google Patents

Description

Locking structure and backlight module

The present invention relates to a locking structure, and more particularly to a locking structure capable of effectively preventing chip contamination and a backlight module using the same.

In recent years, with the vigorous development of display technology, liquid crystal displays have been widely used in daily life, and liquid crystal displays have been widely used in LCD TVs, personal computer monitors, and notebook computer screens. The liquid crystal display mainly consists of a backlight module and a liquid crystal display panel. The backlight module is mainly composed of a light-emitting element, a light guide plate, a diffusion sheet, a cymbal piece and an external machine member, and is used to provide a surface light source required for the liquid crystal display panel to display. The backlight module can be divided into a side light type or a direct light type according to the light source light output mode. The side-emitting light is suitable for applications with a large thickness limit such as a notebook computer or a tablet computer, and the direct-lit light is suitable for use on a large-sized display.

In the process of assembling the backlight module or assembling to the display device, some components are often fixed by using a lock attachment (such as a screw) to avoid loose parts. However, in the known locking structure, the force applied between the lock attachment and the member may cause chipping, etc., and the falling of the chip into the backlight module may cause staining or scratching of the diaphragm material.

The invention provides a locking structure for fixing two objects, and can avoid falling debris generated during locking to improve the yield of the assembly process.

The invention provides a backlight module, which can effectively avoid the falling debris entering the interior of the backlight module during the assembly process by using the above-mentioned locking structure.

The invention provides a locking structure for fixing a first object and a second object. The locking structure comprises a first locking portion, a second locking portion, a lock attachment and a diaphragm. The first locking portion is part of the first item and the first locking portion has a first assembly hole. The second locking portion is part of the second item and the second locking portion has a second assembly hole. The lock attachment includes a head portion and an insertion portion, the first lock portion being located between the second lock portion and the head portion, the insertion portion passing through the first assembly hole and being locked to the second assembly hole. The diaphragm is disposed on a side of the second locking portion facing away from the first locking portion, and covers the second assembly hole, the diaphragm has a dust collecting surface facing the second assembly hole, and the diaphragm is corresponding to the second assembly hole The location has perforations.

The invention provides a locking structure for fixing a first object and a second object. The locking structure comprises a first locking portion, a second locking portion, a lock attachment and a dust collecting cover. The first locking portion is part of the first item and the first locking portion has a first assembly hole. The second locking portion is part of the second item and the second locking portion has a second assembly hole. The lock attachment includes a head portion and an insertion portion, the first lock portion being located between the second lock portion and the head portion, the insertion portion passing through the first assembly hole and being locked to the second assembly hole. The dust collecting cover is disposed on a side of the second locking portion facing away from the first locking portion, and covers the second assembling hole, and a cavity is formed between the dust collecting cover and the second locking portion, and the end of the insertion portion is A distance is maintained between the inner walls of the chamber.

The present invention provides a backlight module having the above-mentioned locking structure for fixing a first plate member and a second plate member in a backlight module, wherein the first locking portion belongs to a part of the first plate member, and the second locking portion The portion belongs to a portion of the second plate member, and the insertion portion of the lock attachment faces the interior of the backlight module and is locked to the first plate member and the second plate member.

The invention provides a display device having the above-mentioned locking structure for fixing a first plate member and a second plate member in the display device, wherein the first locking portion belongs to a part of the first plate member, and the second locking portion belongs to A part of the second plate member, and the insertion portion of the lock attachment is locked to the first plate member and the second plate member toward the inside of the backlight module.

Based on the above, the lock structure of the present invention has a dust collecting surface on the diaphragm which can replenish the debris generated when the lock attachment is locked, so as to prevent the falling debris from falling into the backlight module, and avoiding the influence of the falling debris on the appearance or the occurrence of defects and thus affecting Yield.

The above described features and advantages of the present invention will be more apparent from the following description.

1A is a side elevational view of a locking structure in accordance with an embodiment of the present invention. Figure 1B is a front elevational view of the diaphragm of Figure 1A. Referring to FIG. 1A and FIG. 1B , the locking structure 100 of the embodiment is used for fixing the first object 10 and the second object 20 . The locking structure 100 includes a first locking portion 110 , a second locking portion 120 , and a lock attachment . 130 and diaphragm 140. The first locking portion 110 is part of the first article 10 and the first locking portion 110 has a first assembly hole 112. The second locking portion 120 belongs to a portion of the second article 20 and the second locking portion 120 has a second assembly hole 122. The lock attachment 130 includes a head 132 and an insertion portion 134. The first attachment portion 110 is located between the second attachment portion 120 and the head portion 132. The insertion portion 134 passes through the first assembly hole 112 and is locked to the second assembly hole. 122. The diaphragm 140 is disposed on a side of the second locking portion 120 facing away from the first locking portion 110 and covers the second assembly hole 122. The diaphragm 140 has a dust collecting surface 142 facing the second assembly hole 122, and the diaphragm The 140 has a perforation 144 at a position corresponding to the second assembly hole 122.

When the locking structure 100 of the embodiment is applied to the assembly of the backlight module or the process of assembling the backlight module to the display device, in order to ensure that the relevant components of the assembly can be surely fixed, the lock attachment 130 is locked during the locking process. The application of the torsion force is fixed, so that the debris between the components is generated by the friction between the lock attachment 130 and the member, and the dust collecting surface 142 of the diaphragm 140 can collect the debris by the lock attachment 130. To prevent these debris from entering the backlight module, causing stains or scratching the optical film.

In the present embodiment, the dust collecting surface 142 of the diaphragm 140 has an adhesive layer 142a for adhering the falling chips generated during the locking, so that the falling debris can be effectively collected. However, the dust collecting surface 142 does not restrict the collection of chips in the form of the adhesive layer 142a. In other embodiments not shown in the present invention, the dust collecting surface can more electrostatically adsorb the falling chips. Alternatively, a plurality of microstructures may be disposed on the surface of the dust collecting surface to collect the debris on the microstructures. Any design that has a complementary effect on the chipping generated by the locking process can be applied to the dust collecting surface of this embodiment.

2A to 2C are side views showing the assembly relationship of the lock attachments and the diaphragms of different lengths, respectively. Figure 2D is a front elevational view of Figure 2C. When the lock attachment 130 is locked to the second assembly hole 122, the dust collecting surface 142 of the diaphragm 140 can collect the debris generated by the locking, and the through hole 144 located at the position of the diaphragm 140 corresponding to the second assembly hole 122 can be used. The length of the insertion portion 134 of the locking attachment 130 is different, such that the diaphragm 140 is properly deformed to create a space-receiving lock attachment or to allow the lock attachment 130 to pass through the perforation 144. In detail, in FIG. 2A, when the lock attachment 130 is locked to the second assembly portion 120, since the length of the insertion portion 134 is less than or equal to the depth of the second assembly portion 120, the lock attachment 130 does not protrude from the second assembly. Part 120.

In FIG. 2B, the length of the insertion portion 134b of the lock attachment 130b is greater than the depth of the second assembly portion 120, and the through hole 144 of the diaphragm 140 can be appropriately deformed to form a space S for accommodating the second assembly portion 120. The insertion portion 134b. In FIGS. 2C and 2D, when the insertion portion 134c of the lock attachment 130c is longer, the lock attachment 130c may pass through the through hole 144 of the diaphragm 140. Although the lock attachment 130c passes through the through hole 144, the diaphragm 140 can still be attached to the insertion portion 134c to cover the joint area of the lock attachment 130 and the second assembly portion 120, and the dust collection surface 142 can also be used to supplement the chip. , to prevent the falling debris from entering the backlight module through the through hole 144.

On the other hand, the present invention does not limit the configuration of the perforations, and several embodiments will be described below to illustrate the design of the perforations. 3A to 3C are respectively schematic views showing a perforated form of the diaphragm of the present invention. 3A illustrates the diaphragm 140 of the previous embodiment, wherein the perforations 144 of the diaphragm 140 include a plurality of perforations 144 arranged along a plurality of lines 145 to form a plurality of breaks. These lines 145 intersect at a point 146 that is aligned with the insertion portion 134 of the lock attachment 130, and this point 146 may be aligned with the central axis A of the insertion portion 134 (shown in Figure 1A). As such, even if the length of the lock attachment 130 is long, it can smoothly pass through the diaphragm 140 via the point 146. In FIG. 3B, the perforations 144b of the diaphragm 140b include a plurality of perforations 144b arranged along a spiral 145b to form a spiral-type disconnection. And the center 146b of the spiral 145b is aligned with the central axis A of the insertion portion 134 of the lock attachment 130. In addition, the diaphragm 140c illustrated in FIG. 3C includes a plurality of diaphragm units 141 that are separated from each other and spaced apart from each other. The diaphragm units 141 are combined into a diaphragm 140c and constitute an opening 146c, and the opening 146c may be an alignment lock. The central axis A of the attachment 130.

In this embodiment, the second assembly hole 120 includes a screw hole, and the lock attachment 130 is a screw corresponding to the screw hole, for example, a mechanical screw. However, the invention does not limit the form and method of the screw holes of the second assembly hole. In other unillustrated embodiments of the present invention, the screw hole of the second assembly hole may be a buried insert nut, or the second assembly portion is a riveted copper post having a thread.

In the above embodiment, the locking structure 100 has a diaphragm 140 flatly attached to the second locking portion 120. When the length of the insertion portion 134 of the locking attachment 130 is greater than the second locking portion 120, the locking attachment 130 Through the perforations 144 on the diaphragm 140. Hereinafter, an embodiment will be further described in which a dust cover is used in place of the diaphragm of the above embodiment.

Figure 4 is a side elevational view of a locking structure in accordance with another embodiment of the present invention. Referring to FIG. 4, in the present embodiment, the locking structure 200 differs from the locking structure 100 of FIG. 1A only in that the locking structure 200 replaces the diaphragm 140 with a dust collecting cover 240. The dust collecting cover 240 is disposed on a side of the second locking portion 120 opposite to the first locking portion 110 and covers the second assembling hole 122. A chamber 241 is formed between the dust collecting cover 240 and the second locking portion 120. And the end 234a of the insertion portion 234 of the lock attachment 230 is maintained at a distance from the inner wall 242 of the chamber 241. In other words, since a sufficient space is maintained between the dust collecting cover 240 and the second locking portion 120, the insertion portion 134 of the lock attachment 130 is wrapped in the chamber 241.

In the present embodiment, the inner wall 242 of the dust collecting cover 240 has an adhesive layer 242a for adhering the falling chips generated during the locking, so that the falling debris can be effectively collected. However, the dust collecting cover 240 does not limit the collection of the chips in the form of the adhesive layer 242a. In other embodiments not shown in the present invention, the inner wall 242 can more electrostatically adsorb the debris. Alternatively, a plurality of microstructures may be provided on the surface of the inner wall 242 to collect debris on the microstructures. Any of these elements having the effect of replenishing the chips generated by the locking process can be used as the inner wall of the dust collecting cover of the present invention.

Fig. 5A is a development view of the dust collecting cover of Fig. 4. Figure 5B is a side elevational view of the dust cover of Figure 5A. In the present embodiment, the dust collecting cover 240 is a three-dimensional island-shaped structure. Therefore, when the lock attachment 130 is locked to the second locking portion 120, even if the insertion portion 134 of the lock attachment 130 is longer than the second locking portion. 120, still can be accommodated in the chamber 241 of the dust collecting cover 240. However, the present invention does not limit the dust collecting hood of the three-dimensional structure to an island structure, and an embodiment will be described below.

Fig. 6A is a development view of another dust collecting cover of the present invention. Figure 6B is a side elevational view of the dust cover of Figure 6A. In the present embodiment, when the dust collecting hood 340 is deployed, it has a plurality of broken wires 341 and a notched corner, and the notched corner has two edges 342, 343. When the two edges 342, 343 of the dust collecting cover 340 are engaged with each other, the dust collecting cover 340 can form a conical convex three-dimensional structure.

FIG. 7A is a schematic diagram of a backlight module according to an embodiment of the invention. Figure 7B is a cross-sectional view of Figure 7A taken along the dashed line. Referring to FIG. 7A and FIG. 7B, the backlight module 30 of the present embodiment includes the locking structure 100 shown in FIG. 1A, and the locking structure 100 can fix the first board 40 and the first part of the backlight module 30. The second plate member 50 belongs to a portion of the first plate member 40 , and the second locking portion 120 belongs to a portion of the second plate member 50 , and the insertion portion 134 of the lock attachment 130 faces the interior of the backlight module 30 . The lock is attached to the first plate member 40 and the second plate member 50. The first plate 40 is, for example, the plastic frame 32 of the backlight module 30 , and the second plate 50 is, for example, the back plate 34 of the backlight module 30 . The locking structure 100 fixes the plastic frame and the back plate, and avoids falling debris entering the backlight module 30 during the locking, causing stains or scratches on the diaphragm. The present invention does not limit the backlight module 30 to include the locking structure 100 of FIG. 1A. The locking structure of the embodiments of the present invention can be applied to the backlight module 30 of the present embodiment. In addition, the present invention does not limit the first panel to the plastic frame of the backlight module, and the second panel is the back panel of the backlight module. For example, the first board and the second board may also be a backplane of the heat sink and the backlight module, or a front panel of the liquid crystal display module and a back panel of the backlight module.

FIG. 8A is a schematic diagram of a display device according to an embodiment of the invention. Figure 8B is a cross-sectional view of Figure 8A taken along the dashed line. Referring to FIG. 8A and FIG. 8B, the display device 60 of the present embodiment includes the above-mentioned locking structure 100 shown in FIG. 1A and the backlight module 30 shown in FIG. 7A. The locking structure 100 can be fixed in the display device 60. The first plate member 70 and the second plate member 80, the first locking portion 110 belongs to a portion of the first plate member 70, the second locking portion 120 belongs to a portion of the second plate member 80, and the insertion portion of the lock attachment 130 The 134 is locked toward the inside of the backlight module 30 and is locked to the first plate member 70 and the second plate member 80. Here, the second plate member 80 includes a back plate 34 carrying a light guide plate 62 of the display device 60. The first panel 70 includes a front frame 72 that surrounds the edge of the display panel 64 of the display device 60. In addition, the present invention is not limited to the display device 60 including only the lock structure 100 of FIG. 1A. The lock structure of the plurality of embodiments described in the above description can be applied to the display device 60 of the present embodiment. .

In summary, the locking structure of the present invention can be disposed on the back side of the second locking portion by providing a diaphragm or a three-dimensional dust collecting cover, so that the debris generated during the locking can be collected on the diaphragm. The dust wall or the inner wall of the dust cover is added. In addition, the perforation is provided on the diaphragm, or the dust collecting cover with the three-dimensional structure can accommodate the lock accessories of different lengths, thereby increasing the convenience in assembly. Therefore, the locking structure of the present invention can replenish the debris generated during the locking to prevent the falling debris from falling into the backlight module, affecting the appearance or causing defects.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10. . . First object

20. . . Second object

30. . . Backlight module

32. . . Plastic frame

34. . . Backplane

40, 70. . . First plate

50, 80. . . Second plate

60. . . Display device

62. . . Light guide

64. . . Display panel

72. . . Front frame

100, 200. . . Locking structure

110. . . First lock

112. . . First assembly hole

120. . . Second lock

122. . . Second assembly hole

130, 130b, 130c, 230. . . Lock attachment

132. . . head

134, 134b, 134c, 234. . . Insertion

140, 140b, 140c. . . Diaphragm

142. . . Dust collecting surface

141. . . Diaphragm unit

142a, 242a. . . Adhesive layer

144, 144b. . . perforation

145. . . straight line

145b. . . Spiral

146. . . point

146b. . . center

146c. . . Opening

S. . . space

A. . . Central axis

234a. . . End

240, 340. . . Dust cover

241. . . Chamber

242. . . Inner wall

341. . . Broken line

342, 343. . . edge

1A is a side elevational view of a locking structure in accordance with an embodiment of the present invention.

Figure 1B is a front elevational view of the diaphragm of Figure 1A.

2A-2C are side views showing the assembly relationship of the lock attachments and the diaphragms of different lengths, respectively.

Figure 2D is a front elevational view of Figure 2C.

3A-3C are schematic views showing the perforated form of the diaphragm of the present invention, respectively.

Figure 4 is a side elevational view of a locking structure in accordance with another embodiment of the present invention.

Figure 5A is a front elevational view of the dust cover of Figure 4 after being leveled.

Fig. 5B is a side view of the dust cover of Fig. 5A folded up.

Figure 6A is a front elevational view of another dust collecting hood of the present invention after being leveled.

Figure 6B is a side elevational view of the dust cover of Figure 6A when folded up.

FIG. 7A is a schematic diagram of a backlight module according to an embodiment of the invention.

Figure 7B is a cross-sectional view of Figure 7A taken along the dashed line.

FIG. 8A is a schematic diagram of a display device according to an embodiment of the invention.

Figure 8B is a cross-sectional view of Figure 8A taken along the dashed line.

10. . . First object

20. . . Second object

100. . . Locking structure

110. . . First lock

112. . . First assembly hole

120. . . Second lock

122. . . Second assembly hole

130. . . Lock attachment

132. . . head

134. . . Insertion

140. . . Diaphragm

142. . . Dust collecting surface

142a. . . Adhesive layer

144. . . perforation

A. . . Central axis

Claims (14)

A locking structure for fixing a first object and a second object, the locking structure comprising: a first locking portion belonging to a part of the first object, the first locking portion having a first assembly a second locking portion belonging to a part of the second object, the second locking portion having a second assembling hole; a locking attachment comprising a head and an insertion portion, the first locking portion being located Between the second locking portion and the head, the insertion portion passes through the first assembly hole and is locked to the second assembly hole; and a film disposed on the back of the second locking portion a side of the first locking portion covering the second assembly hole, the diaphragm having a dust collecting surface facing the second assembly hole, and the diaphragm is at a position corresponding to the second assembly hole There is at least one perforation. The locking structure of claim 1, wherein the second assembly hole comprises a screw hole, and the lock attachment comprises a screw that cooperates with the screw hole. The locking structure of claim 1, wherein the insertion portion of the lock attachment passes through the diaphragm via the perforation The locking structure of claim 1, wherein the at least one perforation comprises a plurality of perforations arranged along a plurality of lines, and the lines intersect at a point that is aligned with the insertion portion of the lock attachment. The locking structure of claim 1, wherein the at least one perforation comprises a plurality of perforations arranged along a spiral, and a center of the spiral is aligned with the insertion portion of the lock attachment. The lock structure of claim 1, wherein the diaphragm comprises a plurality of diaphragm units separated from each other and spaced apart from each other. The locking structure of claim 1, wherein the dust collecting surface of the diaphragm has an adhesive layer. A locking structure for fixing a first object and a second object, the locking structure comprising: a first locking portion belonging to a part of the first object, the first locking portion having a first assembly a second locking portion belonging to a part of the second object, the second locking portion having a second assembling hole; a locking attachment comprising a head and an insertion portion, the first locking portion being located Between the second locking portion and the head, the insertion portion passes through the first assembly hole and is locked to the second assembly hole; and a dust collecting cover disposed at the second locking portion a side of the first locking portion and covering the second assembly hole, a chamber is formed between the dust collecting cover and the second locking portion, and an end of the insertion portion and an inner wall of the chamber Keep a distance. The locking structure of claim 8, wherein the dust collecting hood has an adhesive layer on an inner wall thereof. The lock structure of claim 8, wherein the dust cover has a protrusion corresponding to the chamber, and the protrusion is tapered or island-shaped. A backlight module having the locking structure according to any one of claims 1 to 10 for fixing a first one in the backlight module a plate member and a second plate member, wherein the first locking portion belongs to a portion of the first plate member, the second locking portion belongs to a portion of the second plate member, and the insertion portion of the locking device faces the The backlight module is internally locked to the first panel and the second panel. A display device according to any one of claims 1 to 10, wherein the backlight module of claim 11 is fixed to fix a first part of the display device a plate member and a second plate member, wherein the first locking portion belongs to a portion of the first plate member, the second locking portion belongs to a portion of the second plate member, and the insertion portion of the lock attachment is oriented The backlight module is internally locked to the first plate and the second plate. The display device of claim 12, wherein the second plate comprises a back plate carrying a light guide plate of the display device, the first plate member comprising a front frame surrounding a display of the display device The edge of the panel. The display device of claim 12, wherein the first panel comprises a heat sink.