Liquid crystal display with fasten structure

A present liquid crystal display includes three frames, two side fasten trellises, and a plurality of tenons used to fasten the three frames and the two side fasten trellises. Each frame has a plurality of clips. The clips of at least one frame have at least one fasten component. Each side fasten trellis has grooves and second fasten portions. The tenons snap into the grooves and conjunct with the clips to assemble the three frames and the side fasten trellises, the fasten component coordinates with the second fasten portion.

CROSS-REFERENCE TO RELATED APPLICATION

This application is related to, and claims the benefit of, a foreign priority application filed in Taiwan as Serial No. 097108060 on Mar. 7, 2008. The related application is incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a liquid crystal display (LCD) with a fasten structure.

GENERAL BACKGROUND

Liquid crystal displays that are light and thin and have low power consumption characteristics have been widely used in office automation equipment, video units, and the like.

A direct-backlight type liquid crystal display usually has a plurality of lamps, a plurality of optics films, a liquid crystal display panel, and a plurality of frames used to assemble all of above. Therefore, the liquid crystal display needs a plurality of screws to fasten the frames. However, it takes a lot of time to assemble the liquid crystal display with the screws.

What is needed, therefore, is an LCD that can overcome the described limitations, as well as a direct-backlight liquid crystal display employing the backlight module.

DETAILED DESCRIPTION OF DISCLOSURE

Reference will now be made to the drawings to describe preferred and exemplary embodiments in detail.

Referring toFIG. 1, a liquid crystal display1includes a first frame10, a second frame11, a plurality of tenons12, two side fasten trellises13, a third frame14, a liquid crystal display panel (not shown), a plurality of optical films (not shown), and a plurality of lamps (not shown).

The third frame14includes a bottom plate143, a first side wall141, and a second side wall142. The first side wall141and the second side wall142have a same structure. The first side wall141and the second side wall142are disposed vertically, and face to each other in parallel. The first side wall141has two ends. Each end of the first side wall141forms a first clip146. The two first clips146are disposed at two edges of the first side wall141. The first clip146has a rectangular opening144, and two chips145as the edges of the rectangular opening144. The rectangular opening144and two chips145make a “[” shape.

Each of the side fasten trellises13has a cubic shape used to fasten the plurality of lamps and avoids light leakage from lamps. The two side fasten trellises13are disposed between the first side wall141and the second side wall142with four ends adjoining the four first clips146. The two side fasten trellises13are arranged opposite to each other. Each side fasten trellis13includes a first side surface131, a second side surface132, a top surface133, and a bottom surface134. The first side surface131and the second surface132are disposed between the top surface133and the bottom surface134. The first side surface131and the second side surface132have a same structure. Each of the first side surface131and the second side surface132has a cuneiform groove138. The two cuneiform grooves138correspond to the two openings144, respectively. The bottom surface134is disposed on the bottom plate143.

A bottom surface of the cuneiform groove138is a slant. The depth of the cuneiform groove138decreases along the concaving direction of the opening144. A rectangular fixing portion135and a circular fixing portion136are disposed on the bottom surface of the cuneiform groove138. The rectangular fixing portion135and the circular fixing portion136are arranged corresponding to an incline of the cuneiform groove138.

The second frame11includes a shell (not labeled), a third side wall111, a fourth side wall112, a fifth side wall113, and a sixth side wall114. The third side wall111, the fourth side wall112, the fifth side wall113, and the sixth side wall114extend perpendicularly from the edges of the shell. The third side wall111, the fourth side wall112, the fifth side wall113, and the sixth side wall114are separate from each other with a first gap117formed between two ends of each two adjacent side walls. The third side wall111and the fifth side wall113are arranged opposite to each other and have a same structure. The fourth side wall112and the sixth side wall114are arranged opposite to each other and have a same structure. The third side wall111corresponds to the first side wall141of the third frame14. Each end of the third side wall111forms a second clip118having a “[” shape substantially the same as that of each first clip146. Each second clip118has a rectangular opening115and two chips116. The rectangular opening115of the second clip118has the same shape and size as that of the rectangular opening144of the corresponding first clip146.

The first frame10includes a rectangular display opening (not labeled), a shell (not labeled) for forming the rectangular display opening, a seventh side wall101, an eighth side wall102, a ninth side wall103, and a tenth side wall104. The seventh side wall101, the eighth side wall102, the ninth side wall103, and the tenth side wall104extend perpendicularly from the edges of the shell. The seventh side wall101, the eighth side wall102, the ninth side wall103, and the tenth side wall104are separate from each other with a second gap109formed between two ends of each two adjacent side walls. The second gaps109are disposed corresponding to the first gaps117. The seventh side wall101and the ninth side wall103are arranged opposite to each other and have a same structure. The eighth side wall102and the tenth side wall104are arranged opposite to each other and have a same structure. Each end of the seventh side wall101forms a third clip100having a “[” shape as that of the first clip146. Each third clip100has a rectangular opening (not labeled) and two chips108. The rectangular opening of the third clip100has the same shape and size as the rectangular opening144of the first clip146.

A plurality of fasten components are disposed on the third clips100. Each fasten component is a flexible plate105, which extends in the rectangular opening of a corresponding third clip100. The flexible plate105is between the two chips108. Referring also toFIG. 3, the flexible plate105has a rectangular first fixing portion1051and a circular first fixing portion1052on one side. The rectangular first fixing portion1051is a protrusion. The shape and the size of the rectangular first fixing portion1051correspond to the rectangular fixing portion135of the cuneiform groove138. The circular first fixing portion1052is a protrusion. The shape and the size of the circular first fixing portion1052correspond to the circular fixing portion136of the respective cuneiform groove138. The rectangular first fixing portion1051and the circular first fixing portion1052are formed by stamping, so a rectangular groove107and a circular groove106are formed in the outside of the flexible plate105when stamping the rectangular first fixing portion1051and the circular first fixing portion1052.

Referring toFIG. 2, each tenon12includes a base122, two side walls121extending vertically from two edges of the base122respectively, and a protrusion123. The two side walls121are parallel to each other and have a same structure. The protrusion123is disposed on the base122between the two side walls121. The protrusion123has a trapeziform shape. A slant angle of the protrusion123corresponds to the slant angle of the cuneiform groove138. Each side wall121has a location groove124having a “[” shape with an opening outward. The location grooves124correspond to the chips145of the third frame14, the chips116of the second frame11, and the chips108of the first frame10.

The process of assembling the liquid crystal display1is as follows. Firstly, a backlight module is assembled. The two ends of each lamp are put into a rectangular housing groove of the two side fasten trellises13respectively. Then, the two side fasten trellises13are assembled on the bottom plate143of the third frame14. The cuneiform grooves138are disposed corresponding to the rectangular openings144. The plurality of optical films are assembled above the lamps and the side fasten trellises13. The third frame14is housed into the second frame11, such that the third side wall111and the fifth side wall113of the second frame11surround the first side wall141and the second side wall142of the third frame14, respectively. The second clips118are disposed corresponding to the first clips146and the cuneiform grooves138. Then, a liquid crystal display panel is assembled above the backlight module. The liquid crystal display panel and the backlight module are both housed in the first frame10, such that the seventh side wall101, the eighth side wall102, the ninth side wall103, and the tenth side wall104of the first frame10surround the outside of third side wall111, the fourth side wall112, the fifth side wall113, and the sixth side wall114of the second frame11. The rectangular openings of the third clip100, the rectangular openings144of the third frame14and the rectangular openings115of the second frame11correspond to the cuneiform grooves138. The chips108of the first frame10correspond to the chips116of the second frame11and the chips145of the third frame14. The second gaps109of the first frame10correspond to the first gaps117of the second frame11.

Referring toFIG. 3toFIG. 6, when fastening the third frame14, the side fasten trellises13, the second frame11, and the first frame10, each tenon12is pushed into the corresponding first gap117and the corresponding second gap109. The two corresponding chips145of the third frame14, the two corresponding chips116of the second frame11, and the two corresponding chips108of the first frame10all slip into the two location grooves124of the tenon12. Because the protrusion123presses the corresponding flexible plate105, the flexible plate105bends along the protrusion123and snaps into the corresponding cuneiform groove138of the corresponding side fasten trellis13. The circular first fixing portion1052and the rectangular first fixing portion1051of the flexible plate105are pressed into the circular fixing portion136and the rectangular fixing portion135of the cuneiform groove138, respectively.

The present liquid crystal display1utilizes the first clips146of the third frame14, the second clips118of the second frame11, the third clips100of the first frame10, the cuneiform grooves138of the side fasten trellises13, and the plurality of tenons12. The location grooves124of the tenons12house the third clips100, the second clips118, and the first clips146; and the protrusions123of the tenons12press into the cuneiform grooves138of the side fasten trellises13. Thereby, the first frame10, the second frame11, the third frame14, and the side fasten trellises13are assembled with each other and with the tenons12to form the liquid crystal display1. There is no need for any screws to assemble the liquid crystal display1. As described above, the liquid crystal display1can be assembled quickly, and can be disassembled conveniently.

Referring toFIG. 7, the structure of the tenon22is similar to the structure of the tenon12. The main difference between the tenon12and the tenon22is as follows: the tenon22further includes a semicircular protrusion224. The semicircular protrusion224is disposed on an incline plane of a protrusion223.

Referring toFIG. 8andFIG. 9, when the tenon22is being assembled, the semicircular protrusion224works with a circular groove206to location and then the semicircular protrusion224snaps into a rectangular groove207. The semicircular protrusion224blocks with the rectangular groove207to make the tenon22more fasten. The liquid crystal display in this embodiment is more reliable.

Referring toFIG. 10, compared with the liquid crystal display1, the difference is as follows: four flexible plates315are disposed on the second frame31. The structure of the flexible plate315is as the same as the flexible plate105of the liquid crystal display1. The first frame30only has clips with a rectangular opening (not labeled) and two chips (not labeled). The assembly process is similar to that of the first embodiment.

Referring toFIG. 11, compared with the liquid crystal display1, the difference is as follows: four flexible plates415are disposed on the second frame41. The structure of the flexible plate415is as the same as the flexible plate105of the liquid crystal display1. When the tenon42is pushed to assemble the first frame40and the second frame41, the flexible plate of the first frame40overlaps the flexible plate415of the second frame41. The assembly process is similar to that of the first embodiment.

Referring toFIG. 12, compared with the liquid crystal display1, the difference is as follows: four flexible plates547are disposed on the third frame54. The structure of the flexible plate547is as the same as the flexible plate105of the liquid crystal display1. There is no flexible plate disposed on the first frame50and the second frame51. The assembly process is similar to that of the first embodiment.

It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit or scope of the disclosure or sacrificing all of its material advantages. For example: the shape of the rectangular second clip and the circular second clip can be changed to another shape. Just keep the second clip can be assembled well with the flexible plate.