KR20070099904A - Liquid crystal display - Google Patents

Abstract

A liquid crystal display apparatus is provided to save a boss connection time when a fixing chassis is mounted on the liquid crystal display apparatus and to remove a boss for attaching an inverter fixing chassis, thereby improving the yield, preventing a facility error from being generated, and reducing a manufacturing cost. A liquid crystal display apparatus comprises a liquid crystal display panel(30) for displaying an image, a backlight assembly(50) for supplying light to the liquid crystal display panel, a top chassis(70) with first and second inserting grooves for fixing an upper part of the liquid crystal display panel, a bottom chassis(180) receiving the backlight assembly and the liquid crystal display panel to be connected to the top chassis, an inverter(80) for supplying power to a light source included in the backlight assembly, and a fixing chassis(100) in which the inverter is fixed, having first and second fixing units fixed in the first and second inserting grooves.

Description

Liquid Crystal Display {LIQUID CRYSTAL DISPLAY}

1 is an exploded perspective view illustrating fixing a conventional inverter fixed chassis to a top chassis.

2 is an exploded perspective view illustrating a liquid crystal display according to a first embodiment of the present invention.

3 is a perspective view illustrating the inverter fixing chassis of FIG. 1.

4 is an exploded perspective view illustrating a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 5 is a perspective view illustrating the inverter fixing chassis illustrated in FIG. 4.

6 is a diagram illustrating an inverter fixing chassis according to a third exemplary embodiment of the present invention.

FIG. 7 is a perspective view illustrating the inverter fixed chassis illustrated in FIG. 6.

<Brief Description of Drawings>

30: liquid crystal display panel 31: color filter substrate

32: thin film transistor substrate 41: gate printed circuit board

42: gate drive IC 43: gate TCP

44: data TCP 45: data drive IC

46: data printed circuit board 50: backlight assembly

51: light source 52: light guide plate

53: optical sheet view 54: reflective sheet

60: mold frame 62: fourth insertion groove

70: top chassis 71: first insertion groove

72: second insertion groove 73: auxiliary insertion groove

80: inverter 81: female connector

82: third insertion groove 100: inverter fixed chassis

110: first fixing means 120: second fixing means

130: auxiliary hook 161: 9th insertion groove

162: tenth insertion groove 171: fifth insertion groove

172: sixth insertion groove 181: seventh insertion groove

182: eighth insertion groove

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device including first and second fixing means of an inverter fixing chassis of the liquid crystal display device to improve the efficiency of the liquid crystal display device assembly process.

In general, as the modern society becomes information socialized, the importance of the liquid crystal display, which is one of the information display devices, is gradually increasing. The most widely used Cathode Ray Tube (CRT) has many advantages in terms of performance and price, but has many disadvantages in terms of thinning or low power. On the other hand, the liquid crystal display device is more expensive in terms of price, but has been attracting attention as an alternative means of overcoming the disadvantages of the CRT due to advantages such as miniaturization, light weight, thinness, and low power consumption.

As described above, the liquid crystal display device supplies power to a liquid crystal display panel for largely displaying an image signal, a panel driver for driving the liquid crystal display panel, a backlight assembly for providing light to the liquid crystal display panel, and a backlight assembly. It includes an inverter.

The liquid crystal display panel is composed of liquid crystal cells arranged in a matrix form between two substrates and switch elements for switching the signals supplied to the liquid crystal cells, respectively. The panel driver includes a gate driver for driving a gate line of the liquid crystal display panel, a data driver for driving a data line of the liquid crystal display panel, a timing controller for controlling the gate driver and the data driver, a liquid crystal display panel and driving circuits. And a power supply unit for supplying power signals required for driving. The backlight assembly includes a light source for generating light, a light guide plate for guiding the light generated from the light source toward the liquid crystal display panel, a reflective sheet for increasing the light efficiency, and various optical sheets. The liquid crystal display panel, the panel driver and the backlight assembly are accommodated in the top chassis and the bottom chassis to be fixed. The inverter supplies power to the light source included in the backlight assembly. Such an inverter is fixed to the inverter fixed chassis and attached to one side of the top chassis.

1 is an exploded perspective view illustrating fixing a conventional inverter fixed chassis to a top chassis.

Referring to FIG. 1, boss fastening holes 201 and 301 are respectively provided in the inverter fixed chassis 300 and the top chassis 200 to fasten the inverter fixed chassis 300 in which the inverter 80 is stored and the top chassis 200. ) Is formed. The boss 302 fixes the inverter fixing chassis 300 and the top chassis 200 by passing through the boss fastening holes 201 and 301.

However, when the inverter fixed chassis 300 is fastened to the top chassis 200 through the boss 302, the assembly process time of the inverter fixed chassis 300 and the top chassis 200 is long. In addition, if the boss 302 is small in size and the boss 302 flows into the production equipment due to inadvertent operator in the assembly process, a problem occurs that causes the production equipment to fail.

Accordingly, an object of the present invention is to provide a liquid crystal having first and second fixing means in an inverter fixing chassis, and forming the first and second fixing means as hooks of hooks or protruding hooks to improve the efficiency of the assembly process. It is to provide a display device.

In order to achieve the above object, the present invention provides a liquid crystal display panel for displaying an image, a backlight assembly for supplying light to the liquid crystal display panel, and fixing the upper portion of the liquid crystal display panel, the first and second on either side A top chassis having an insertion groove, a bottom chassis accommodating the liquid crystal display panel and a backlight assembly and fastened to the top chassis, an inverter supplying power to a light source included in the backlight assembly, and the inverter are attached and fixed, A liquid crystal display device comprising an inverter fixing chassis having first and second fixing means inserted into and fixed to first and second insertion grooves.

And, the first and second fixing means is characterized in that one side is formed of a hook of the ring shape, the other side is formed of a hook of the protruding form.

The bottom chassis further includes a bottom chassis in which the protruding hook is inserted and a third insertion groove is formed to overlap with any one of the first and second insertion grooves formed in the top chassis.

The apparatus may further include a mold frame accommodating the optical sheets included in the backlight assembly, and the mold frame may further include a fourth insertion groove into which the protruding hook is inserted.

On the other hand, the first and second fixing means is characterized in that both formed of a hook of the protruding form.

A top chassis having fifth and sixth insertion grooves into which the first and second fixing means are inserted, and seventh and fifth inserts formed by overlapping the fifth and sixth insertion grooves with the first and second fixing means inserted therein; A bottom chassis further comprising an insertion groove and a ninth and tenth insertion groove in which the first and second fixing means are inserted and fixed and overlapping with the fifth to eighth insertion grooves; It further includes a mold frame for receiving a plurality of optical sheets included.

The inverter fixing chassis further includes an auxiliary hook for fastening with the top chassis, and the top chassis further includes an auxiliary insertion groove into which the auxiliary hook is inserted and fixed.

Other features of the present invention will become apparent from the description of the embodiments with reference to the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an exploded perspective view illustrating a liquid crystal display according to a first embodiment of the present invention.

Referring to FIG. 2, the liquid crystal display according to the first exemplary embodiment of the present invention includes a liquid crystal display panel 30 for displaying an image, a backlight assembly 50 for supplying light to the liquid crystal display panel 30, and a liquid crystal display. The top chassis 70 is fixed to the upper portion of the display panel 30 and the first and second insertion grooves 71 and 72 are formed on one side thereof, and the liquid crystal display panel 30 and the backlight assembly 50 are accommodated therein. The bottom chassis 180 fastened to the top chassis 70 and the inverter 80 and the inverter 80 which supply power to the light source 51 included in the backlight assembly 50 are fixed to the first chassis and the first chassis. 2 is provided with an inverter fixing chassis 100 in which first and second fixing means 110 and 120 are inserted into and fixed to the insertion grooves 71 and 72.

Specifically, the liquid crystal display panel 30 includes a thin film transistor substrate 32 and a color filter substrate 31 facing the thin film transistor substrate 32. A liquid crystal (not shown) is injected between the thin film transistor substrate 32 and the color filter substrate 31 and an image is displayed by controlling the light transmittance of the liquid crystal using a thin film transistor (TFT) as a switching element. .

In order to drive the liquid crystal display panel 30 further includes a panel driver including a gate driver IC 43 for driving a gate line formed in the liquid crystal display panel 30 and a data driver IC 45 for driving a data line. do. The gate driver IC 43 is mounted on a film tape carrier package (TCP) 42 and is electrically connected to the liquid crystal display panel 30 through a TAB process. Alternatively, the liquid crystal display panel 30 may be directly mounted in the form of a chip on glass (COG) or integrated in the liquid crystal display panel. The data driver IC 45 is mounted on the data TCP 44 in the form of a film and electrically connected to the liquid crystal display panel 30 through a TAB process. Alternatively, the liquid crystal display panel 30 may be directly mounted in the form of a chip on glass (COG). The gate driving IC 43 receives a timing signal and a power signal supplied from the gate printed circuit board 41 to generate a gate driving signal and supply the gate driving signal to the gate line. The data driving IC 45 receives the timing signal, the image signal, and the power signal applied from the data printed circuit board 46 to generate the data driving signal and supply it to the data line.

The backlight assembly 50 includes a light source 51, a light guide plate 52 for guiding light generated from the light source 51, a diffusion sheet for diffusing light guided by the light guide plate 52, and a light condensed light. An optical sheet portion 53 including a prism sheet and sheets such as a protective sheet protecting the surface of the prism sheet, and a reflective sheet for reflecting the light supplied to the lower portion of the light guide plate 52 to the liquid crystal display panel 30 ( 54) and provide light to the liquid crystal display panel (30).

The light source 51 has an edge type for injecting light of a cold cathode fluorescent lamp (CCFL) installed on the side of the light guide plate 52 parallel to the liquid crystal display panel 30 to the liquid crystal panel by the light guide plate. -lighting) method. Alternatively, instead of using the light guide plate 52, a plurality of fluorescent lamps are disposed on the rear side of the diffusion sheet disposed in parallel with the liquid crystal display panel 30 to directly enter the light of the fluorescent lamp into the liquid crystal display panel 30. It also uses direct-lighting.

The light guide plate 52 is for uniformly transmitting the light from the light source 51 to the screen display area. The light guide plate 52 is a transparent acrylic material having a thickness of about several millimeters, and has a plurality of dots on the bottom surface for uniform reflection of light. B V-shaped grooves (not shown) are formed. The light guide plate 52 is formed to have a size corresponding to that of the liquid crystal display panel 30. At this time, the light guide plate 52 is unnecessary for the light source 51 using the direct type method.

The reflective sheet 54 serves to reflect the light from the light source 51 to the light guide plate 52 and to the light exiting the bottom chassis 180 toward the tower.

The optical sheet portion 53 includes a diffusion sheet, a prism sheet, and a protective sheet. In the diffusion sheet and the prism sheet, two to three sheets are properly combined to diffuse or condense the light from the light guide plate 52 to improve brightness or improve the viewing angle. The protective sheet is installed on the diffusion sheet or prism sheet to protect the sheets sensitive to dust or scratches and to prevent the flow of the sheets when only the backlight assembly is transported.

The mold frame 60 includes a sheet storage unit (not shown) for accommodating the optical sheet unit 53, a light source accommodating unit (not shown) for accommodating the light source 51, and gate and data printed circuit boards 41 and 46. ) And a panel mounting portion (not shown) on which the liquid crystal display panel 30 is mounted. In the sheet storage portion, a reflective sheet, a light guide plate 52, a diffusion sheet, a prism sheet, and the like are sequentially stacked and stored. The light source 51 is accommodated in the light source accommodating part formed at one side of the mold frame 60. The liquid crystal display panel 30 is mounted on the panel seating portion formed on the top surface of the mold frame 60. The gate and the data printed circuit boards 41 and 46 are accommodated in the printed circuit board accommodating portion formed on the rear surface of the mold frame 60. The mold frame 60 further includes a fourth insertion groove 62 in which the second fixing means 120 formed in the inverter fixing chassis 100 is inserted and fixed. The fourth insertion groove 62 is formed to overlap the second and third insertion grooves 82 formed in the top chassis 70 and the bottom chassis 180, respectively.

The backlight assembly 50 including the mold frame 60 and the liquid crystal display panel 30 are fixedly stored in the bottom chassis 70.

The bottom chassis 70 is formed of a metal material to protect the backlight assembly 50 and the liquid crystal display panel 30. The bottom chassis 180 is coupled to the top chassis 70 that surrounds an outer region of the top of the liquid crystal display panel 30. Here, the bottom chassis 180 further includes a third insertion groove 82 into which the second fixing means 120 formed in the inverter fixing chassis 100 is inserted. The third insertion groove 82 is formed so that the second fixing means 120 is inserted therethrough and overlaps with the second insertion groove 72 formed in the top chassis 70.

The top chassis 70 is formed to surround the non-display area of the upper portion of the upper portion of the liquid crystal display panel 30, that is, the upper surface, and fixes the liquid crystal display panel 30. To this end, the top chassis 70 is formed in a '-' shape and is fastened to the bottom chassis 180. One side of the top chassis 70 is attached to the inverter fixed chassis 100 is fixed to the inverter 80 for supplying power to the light source 51. The top chassis 70 is formed with first and second insertion grooves 71 and 72 for attaching the inverter fixed chassis 100. The first and second insertion grooves 71 and 72 are formed to correspond to the first and second fixing means 110 and 120 formed in the inverter fixing chassis 100.

The inverter 80 for driving the light source 51 has a connector 81 for fastening with a connector formed on a conductive line branched from the light source 51 to supply power to the light source 51 at one end thereof. . The inverter 80 converts the DC power input from the power supply unit formed on the outside or the power supply unit mounted on the data printed circuit board 46 into an AC power supply and supplies it to the light source 51. The inverter 80 is received and fixed to the inverter fixed chassis 100.

3 is a perspective view illustrating the inverter fixing chassis of FIG. 2.

Referring to FIG. 6, the inverter fixing chassis 100 is formed at both ends of the inverter storage unit for accommodating and fixing the inverter 80, and at both ends of the inverter fixing chassis 100 so that the inverter fixing chassis 100 is attached to the top chassis 70. And first and second fixing means 110 and 120 for fixing.

The inverter accommodating portion is formed to fit the size of the inverter 80 to accommodate the inverter 80 and is formed of a material such as metal to protect the inverter 80 from the outside.

The first fixing means 110 is formed with a hook hook, the second fixing means 120 is formed with a hook hook. The first fixing means 110 is inserted into and fixed to the first insertion groove 71 formed in the top chassis 70, and the second fixing means 120 is inserted into the second insertion groove 72 formed in the top chassis 70. Insert is fixed.

At this time, the second fixing means 120 is inserted through the third insertion groove 82 formed in the bottom chassis 180 and the fourth insertion groove 62 formed in the mold frame 60. In particular, the end of the second fixing means 120 is formed in the shape of an arrowhead and is firmly fixed so as not to fall out after being inserted into the fourth insertion groove 62. In addition, the second fixing means 120 formed in the shape of the arrowhead is formed to be inclined toward the inverter fixing chassis 100 at the end is inserted while being inserted into the second to fourth insertion groove 62 is easy to insert. At this time, a groove is formed to cross the center of the second fixing means 120 is bent inward when the second fixing means 120 is inserted into the second to fourth insertion groove 62 to facilitate insertion, After insertion is restored to its original state is fixed to the inner surface of the mold frame 60 is tightened more firmly. The second fixing means 120 is formed in a columnar shape of the end of a circular or polygonal.

4 is an exploded perspective view illustrating a liquid crystal display according to a second exemplary embodiment of the present invention, and FIG. 5 is a perspective view illustrating the inverter fixing chassis of FIG. 4.

4 and 5, a liquid crystal display device according to a second embodiment of the present invention includes a liquid crystal display panel 30 for displaying an image and a backlight assembly 50 for supplying light to the liquid crystal display panel 30. And a top chassis 70 fixing the upper portion of the liquid crystal display panel 30 and having fifth and sixth insertion grooves 171 and 172 formed on one side thereof, the liquid crystal display panel 30 and the backlight assembly 50. And the eighth insertion is fastened with the top chassis 70 and overlaps with the seventh insertion groove 181 and the sixth insertion groove 172 formed to overlap with the fifth insertion groove 171 formed in the top chassis 70. The sixth and fifth ninth insertion grooves 161 formed to overlap the fifth and seventh insertion grooves 171 and 181 to accommodate the bottom chassis 180 in which the grooves 182 are formed and the optical sheet part 53. The mold frame 60 having the tenth insertion groove 162 formed to overlap the insertion grooves 172 and 182, and the inverter 80 for supplying power to the light source 51 included in the backlight assembly 50. ) And Inver The first fixing means 110 and the sixth, the rotor 80 is attached and fixed, the first, fixing means 110 is formed through the fifth, seventh and ninth insertion grooves 171, 181, 161, and is formed of a protruding hook. The inverter fixing chassis 100 is inserted into and fixed through the eighth and tenth insertion grooves 172, 182, and 162 and has a protruding hook.

4 illustrates a top chassis 70 in which fifth and sixth insertion grooves 171 and 172 are formed, and a bottom chassis 180 and seventh and eighth insertion grooves 181 and 182 formed therein, as compared with FIG. 5. Except that the mold frame 60 in which the ninth and tenth insertion grooves 181 and 182 are formed and the first and second fixing means 110 and 120 formed in the inverter fixing chassis 100 are formed of protruding hooks. With the same components. Therefore, description of the same components will be omitted.

Specifically, the first and second fixing means 110 and 120 formed in the inverter fixing chassis 100 are formed as hooks of a protruding shape. The fifth to tenth insertion grooves 171, 172, 181, and 182 fastened to the first and second fixing means 110 and 120 are respectively connected to the top chassis 70, the bottom chassis 180, and the mold frame 60. 161 and 162 are formed, respectively.

As described above, the first and second fixing means 110 and 120 are formed in the shape of arrowheads, and the fifth to second fixing means 110 and 120 are formed in the top chassis 70, the bottom chassis 180, and the mold frame 60, respectively. After being inserted into the tenth insertion grooves 171, 172, 181, 182, 161, and 162, it is firmly fixed so as not to fall out. In addition, the first and second fixing means 110 and 120 are formed to be inclined toward the inverter fixing chassis 100 at the ends formed in the shape of arrowheads, and slide in the insertion grooves 171, 172, 181, 182, 161, and 162. It is inserted and formed to facilitate insertion. In addition, groove portions are formed to cross the center of the first and second fixing means 110 and 120 so that the first and second fixing means 110 and 120 are fifth to tenth insertion grooves 171, 172, 181, and 182. , 161, 162 is bent inward with respect to the groove portion when inserted into the center to facilitate insertion, after the insertion of the ninth and tenth insertion grooves (161, 162) formed in the mold frame 60 It is fixed to the inner wall surface and tightened more firmly. In addition, the first and second fixing means (110, 120) is formed in a columnar shape of a circular or polygonal end as described above.

The fifth to tenth insertion grooves 171, 172, 181, 182, 161, and 162 correspond to the first and second fixing means 110 and 120, and thus the top chassis 70, the bottom chassis 180, and the mold frame. 60 is formed in each.

The fifth and sixth insertion grooves 171 and 172 are formed through the first and second fixing means 110 and 120 to be inserted into one side of the top chassis 70, and the seventh and eighth insertion grooves ( 181 and 182 are overlapped with the fifth and sixth insertion grooves 171 and 172 formed in the top chassis 70 in the bottom chassis 180. The ninth and tenth insertion grooves 161 and 162 overlap with the fifth to eighth insertion grooves 171, 172, 181 and 182, respectively, to penetrate the mold frame 60.

FIG. 6 is an exploded perspective view illustrating a liquid crystal display according to a third exemplary embodiment of the present invention, and FIG. 7 is a perspective view illustrating the inverter fixing chassis 100 illustrated in FIG. 6.

FIG. 6 further includes an auxiliary hook 130 in the inverter fixing chassis 100 and a top chassis 70 in which an auxiliary insertion groove 73 into which the auxiliary hook 130 is inserted is formed. It has the same components except one. Therefore, a detailed description of the overlapping components will be omitted.

6 and 7, in the liquid crystal display according to the third exemplary embodiment of the present invention, the inverter fixing chassis 100 further includes an auxiliary hook to increase the fastening force, and an auxiliary insertion groove into which the auxiliary hook is inserted. This further formed top chassis 70 is provided.

Specifically, the inverter fixed chassis 100 further includes at least one auxiliary hook 130 to increase the fastening force with the top chassis 70.

The auxiliary hook 130 is formed between the inverter fixing part of the inverter fixing chassis 100. The auxiliary hook 130 is formed in a 'b' shape to prevent the inverter fixed chassis 100 is fastened to the top chassis 70 is separated by the flow.

The top chassis 70 is further formed with at least one auxiliary insertion groove 73 into which the auxiliary hook 130 is inserted. The auxiliary insertion groove 73 is preferably formed of the same size as the auxiliary hook 130 so that the auxiliary hook 130 is inserted and fixed.

The auxiliary hook 130 illustrated in FIGS. 6 and 7 may also be formed in the inverter fixing chassis 100 of the LCD according to the second exemplary embodiment of the present invention, and the auxiliary hook 130 is inserted into the auxiliary hook 130. Grooves 73 are also formed in the top chassis 70.

Although not shown in the drawings, at least one fixing means may be formed in the top chassis, and the inverter fixing chassis may include an insertion groove into which the fixing means formed corresponding to the fixing means formed in the top chassis is inserted. At this time, the fixing means formed on the top chassis is formed of a hook or hook of the protruding shape, the inverter fixing chassis is formed with an insertion groove for fixing the insert is fixed.

As described above, the liquid crystal display according to the present invention can improve the yield by saving the boss fastening time when the inverter fixed chassis is attached. In addition, the boss required for attachment to the inverter fixed chassis can be removed to prevent the boss from penetrating into the installation and causing a defect in the installation.

And the cost can be reduced by removing the boss.

The present invention described above will be capable of various substitutions, modifications and changes by those skilled in the art to which the present invention pertains. Therefore, the present invention should not be limited to the above-described embodiments and the accompanying drawings, and the rights thereof should be determined by the claims.

Claims (7)

A liquid crystal display panel which displays an image; A backlight assembly supplying light to the liquid crystal display panel; A top chassis fixing an upper portion of the liquid crystal display panel and having first and second insertion grooves formed on one side thereof; A bottom chassis configured to receive the liquid crystal display panel and the backlight assembly and to be coupled to the top chassis; An inverter for supplying power to a light source included in the backlight assembly; And And an inverter fixing chassis to which the inverter is attached and fixed and having first and second fixing means inserted into and fixed to the first and second insertion grooves. The method of claim 1, The first and second fixing means, one side is formed of a hook of a ring shape, the other side is a liquid crystal display, characterized in that formed by a hook of the protruding form. The method of claim 2, And a bottom chassis into which the protruding hook is inserted and having a third insertion groove formed to overlap one of the first and second insertion grooves formed in the top chassis. The method of claim 3, wherein Further comprising a mold frame for receiving the optical sheets included in the backlight assembly, And the mold frame further comprises a fourth insertion groove into which the protruding hook is inserted. The method of claim 1, The first and second fixing means are both formed of a protruding hook. The method of claim 5, A top chassis having fifth and sixth insertion grooves into which the first and second fixing means are inserted; A bottom chassis into which the first and second fixing means are inserted and further comprising seventh and eighth insertion grooves formed to overlap with the fifth and sixth insertion grooves; And A mold configured to accommodate the plurality of optical sheets included in the backlight assembly; And a frame further comprising a frame. The method according to any one of claims 1 to 6, The inverter fixing chassis further includes an auxiliary hook for fastening with the top chassis, And the top chassis further comprises an auxiliary insertion groove into which the auxiliary hook is inserted and fixed.

Images