KR101244689B1 - liquid crystal display device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device that reduces cost and improves assembly by adding a wire fixing hook to a stopper to fix a wire. The present invention provides a support for supporting and supporting a liquid crystal panel and a backlight unit therein. Support and protect the main and the lower and side of the support main in the form of wrapping, the cover bottom having a step formed along the edge of the back, and penetrates the side of the cover bottom and formed to a predetermined depth of the support main An insertion groove, a stopper inserted into the insertion groove to fasten the cover bottom and the support main, a groove formed at an edge of the cover bottom so as to correspond to the insertion groove, extending from the stopper, and at an edge of the cover bottom. It is formed to surround the cover bottom along the formed groove so that the end is stepped on the cover bottom And an extension part fixed to constrain the wire soldered to both ends of the lamp of the backlight unit to fix the wire to the rear surface of the cover bottom.

Wire, support main, stopper, protrusion, cover bottom, LCD

Description

[0001] The present invention relates to a liquid crystal display device,

1 is an exploded perspective view showing a general liquid crystal display device

2 is a rear perspective view of a liquid crystal display according to the related art. That is, after combining the components of the liquid crystal display shown in FIG. 1, the X-axis is rotated by 180 ° about the axis.

3 is an enlarged plan view and a portion A showing a liquid crystal display according to the present invention;

4 is a cross-sectional view illustrating a liquid crystal display device taken along line III-III ′ of FIG. 3.

5 is a view illustrating a stopper structure in a liquid crystal display according to the present invention.

Description of the Related Art [0002]

100: support main 110: liquid crystal panel

120: cover bottom 130: insertion groove

140: stopper 150: extension

160: wire

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device for fixing a wire of a backlight lamp.

With the recent rapid development of semiconductor technology, the demand for liquid crystal display devices having improved performance while being smaller and lighter is exploding.

Recently, liquid crystal displays (LCDs), which have been in the spotlight, have advantages such as miniaturization, light weight, and low power consumption, and as an alternative means to overcome the disadvantages of the conventional cathode ray tube (CRT). It has been attracting attention and is currently used in almost all information processing equipment that requires a display device.

A general liquid crystal display device applies voltage to a specific molecular array of a liquid crystal to convert it into another molecular array, and visually changes optical properties such as birefringence, photoreactivity, dichroism, and light scattering characteristics of the liquid crystal cell emitted by the molecular array. It is a light-receiving display device which converts into a change and displays information using the modulation of the light by a liquid crystal cell.

In the case of such a liquid crystal display, a lamp is mainly used as a backlight. The lamp receives power by connecting to an inverter board through a lamp wire to emit the lamp. Since the inverter board is mounted on the rear of the backlight assembly including components necessary for supplying light in addition to the backlight, the lamp wire must be drawn out to the rear of the backlight assembly and connected to the inverter board.

Accordingly, the lamp wires should be fixed so as not to increase the thickness of the liquid crystal display device.

In general, since the inverter board is located near the center of the back of the backlight assembly, there is a problem in that the lamp wires drawn out from the corners are bent and fixed.

Therefore, the mold frame positioned at the back of the backlight assembly is formed in a bent shape to fix the lamp wire on the mold frame.

1 is an exploded perspective view showing a general liquid crystal display device.

As shown in Fig. 1, a liquid crystal display panel 30 for displaying an image, a fluorescent lamp 31 for generating light, a lamp housing 32 for enclosing the fluorescent lamp 31 in a U shape, and The diffusion plate 38, the first prism sheet 37 and the second prism sheet 36, the protective sheet 35, the light guide plate 33, and the reflective plate 34 which are sequentially attached to one surface of the liquid crystal display panel 30. It consists of.

The liquid crystal display panel 30 and a support main 39 for accommodating and fixing the backlight unit are included.

Here, the fluorescent lamp 31, the lamp housing 32 and the diffusion plate 38, the first prism sheet 37 and the second prism sheet 36, the protective sheet 35, the light guide plate 33 and the reflecting plate ( 34) is called a backlight unit.

On the other hand, the backlight unit serves to illuminate the display area A of the liquid crystal display panel 30. Although not shown in the drawing, the display area A of the liquid crystal display panel is composed of two transparent substrates having a polarizing plate attached to an outer surface thereof and a liquid crystal injected between the inner surfaces of the two transparent substrates.

The liquid crystal display device is composed of a driving circuit 40 for driving the display area.

The backlight unit operates in the following manner. When the fluorescent lamp 31 provided on one end surface of the light guide plate 33 is turned on, the light generated by the fluorescent lamp 31 is reflected by the lamp housing 32, and the reflected light is reflected on the light guide plate. It is transmitted through the end face to the end face of the light guide plate in which the fluorescent lamp is not installed. Then, the light is spread over the entire light guide plate 33, and the light is emitted to the display area A of the liquid crystal panel by the diffusion plate 38.

In the liquid crystal display device, a thin film transistor formed in the liquid crystal panel controls a pixel according to a signal from a driving circuit of the liquid crystal display device to selectively pass the light reflected on the display area. The pixels passing through the light selectively gather to display an image on the display area of the liquid crystal panel.

2 is a rear perspective view of a liquid crystal display according to the related art. That is, after combining the components of the liquid crystal display shown in FIG. 1, the X-axis is rotated 180 ° about the axis.

As shown in FIG. 2, the fluorescent lamp 31 formed on the upper surface of the support main 39 for accommodating and fixing the liquid crystal display panel 30 and the backlight unit includes a high voltage electrode and a low pressure electrode formed at both ends of the glass tube. And a high pressure wire 51 connected to the high pressure electrode by soldering, and a low pressure wire 52 connected to the low pressure electrode by soldering.

Here, the electrodes soldered to each of the wires 51 and 52 are wrapped in a holder of an insulator.

In addition, the high voltage wire 51 and the low voltage wire 52 are taken out of the liquid crystal display and connected to a connector, and the connector is connected to an inverter board (not shown) configured on the back of the support main 39.

The high pressure wire 51 and the low pressure wire 52 are fixed to the rear surface of the support main 39 through a tape 50.

However, the liquid crystal display according to the related art has the following problems.

That is, by using a separate tape to fix the lamp wire, the cost rises and the assembly is bad.

The present invention is to solve the conventional problems as described above to provide a liquid crystal display device to reduce the cost and improve assembly by adding a wire fixing hook role to the stopper to secure the wire. have.

The liquid crystal display according to the present invention for achieving the above object includes a support main for supporting the liquid crystal panel and the backlight unit therein, and a cover bottom for supporting and protecting the lower and side surfaces of the support main; An insertion groove formed to penetrate the side surface of the cover bottom and to a predetermined depth of the support main, a stopper inserted into the insertion groove to fasten the cover bottom and the support main to the support bottom, extending from the stopper, Constraining the soldered wires on both ends of the lamp, characterized in that it comprises an extension for fixing the wire to the back of the cover bottom.

Hereinafter, a liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an enlarged plan view and portion A of the liquid crystal display according to the present invention.

As shown in FIG. 3, a support main 100 having a liquid crystal panel and a backlight unit therein and supporting the cover main body 100 and a cover bottom 120 supporting and protecting the lower and side surfaces of the support main 100 in a wrapping form. And an insertion groove 130 penetrating the side surface of the cover bottom 120 and formed to a predetermined depth of the support main 100 and inserted into the insertion groove 130 to cover the cover bottom 120 and the support. A stopper 140 for fastening the main 100 and a wire extending from the stopper 140 and soldered to both ends of the lamp of the backlight unit are restrained to fix the wire to the rear surface of the cover bottom 120. It is configured to include an extension 150.

Here, the extension portion 150 has a hook shape and an end portion thereof is fixed to the rear surface of the cover bottom 120.

4 is a cross-sectional view illustrating a liquid crystal display device taken along line III-III ′ of FIG. 3.

As shown in FIG. 4, the liquid crystal display includes a support main 100, a backlight unit and a liquid crystal panel 110 stacked inside the support main 100, and the support main 100. A cover bottom 120 surrounding the bottom and side surfaces of the side, an insertion groove 130 penetrating the side surface of the cover bottom 120 and formed to a predetermined depth of the support main 100, and the A stopper 140 inserted into the insertion groove 130 to fasten the cover bottom 120 and the support main 100, and a wire extending from the stopper 140 and soldered to both ends of the lamp of the backlight unit. It is configured to include an extension portion 150 for restraining the 160 to secure the wire to the back of the cover bottom 120.

Here, the support main 100 is a mold, the side wall surface thereof is formed into a stepped stepped surface. A backlight unit is installed on the lowest inner layer of the support main 100, and a liquid crystal panel 110 is installed on the backlight unit.

In addition, the liquid crystal panel 110 includes a lower substrate 111 on which switch elements TFT are mounted, and an upper substrate 112 on which color filters are formed. Liquid crystal is injected between the lower substrate 111 and the upper substrate 112. Polarizing plates 113 and 114 are provided on the upper and lower sides of the liquid crystal panel 110.

Meanwhile, the lower polarizing plate 113 provided below the liquid crystal panel 110 polarizes the light beam supplied from the backlight unit and supplies the polarized light beam to the liquid crystal panel 110. The upper polarizing plate 114 installed on the upper side of the liquid crystal panel 110 polarizes the light beam supplied from the liquid crystal panel 110 and emits it outward.

In addition, the cover bottom 120 is installed to surround one side bottom and side surfaces of the support main 100.

The backlight unit is attached to the lamp housing 92 in which the light source 91 is mounted, the light guide plate 93 for converting the light incident from the light source 91 into the surface light source, and the light guide plate 93. Optical sheets 94 for increasing the efficiency of light incident toward the liquid crystal panel 110 and the light emitted to the rear surface of the light guide plate 93 to be reflected to the liquid crystal panel 110 are attached to the rear surface of the light guide plate 93. It is provided with a reflecting plate 95 for.

In addition, the light source 91 supplies predetermined light toward the light guide plate 93 corresponding to power supplied from an external power source. At this time, the light emitted from the light source 91 to the opposite side of the light guide plate 93 is reflected by the lamp housing 92 and is incident to the light guide plate 93.

Here, the light guide plate 93 uniformly distributes the light incident from the light source 91 in its entire area. That is, the light guide plate 93 uniformly distributes the light incident from the light source 91 so that uniform light is incident on the liquid crystal panel 110.

In addition, the reflector 95 reflects light incident to the lower side of the light guide plate. That is, the reflective plate 95 reflects the light incident from the light guide plate 93 so that the light incident to the reflective plate 95 is supplied to the liquid crystal panel 110.

The optical sheets 94 include upper and lower diffusion sheets and upper and lower prism sheets. The optical sheets 94 scatter light incident from the light guide plate 93 so that the light is evenly distributed throughout the light guide plate surface. In addition, the optical sheets 94 may refractor the scattered light to increase the surface brightness and to diffuse the light to widen the viewing angle.

5 is a plan view illustrating a stopper structure in the liquid crystal display according to the present invention.

As shown in FIG. 5, the stopper 140 penetrating through the side surface of the cover bottom 120 to a part of the support main 100 to fix the cover bottom 120 and the support main 100 is an insertion groove. It is formed larger than the width of, is fastened to the inside of the insertion groove by elasticity.

That is, when the stopper 140 larger than the width of the insertion groove is inserted into the insertion groove, the stopper 140 is compressed by pressing both sides of the inside of the insertion groove strongly to return to the original shape by elasticity. .

In addition, the stopper 140 is divided into two parts 141 and 142 inserted into the insertion groove, the projection 143 is formed on the surface of the two divided parts 141 and 142, the protrusion ( 143 may obtain additional fastening force when inserted into the support main 100.

In addition, the extension part 150 extending from the stopper 140 has a hook shape and is soldered to both ends of the lamp of the backlight unit to constrain the wire 160 flowing out to the outside, and the end portion of the extension part 140 may be It is fixed to the back of the cover bottom 120.

In addition, the stopper 140 is made of a polycarbonate (PC) material.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, the liquid crystal display according to the present invention has the following effects.

In other words, the extension part is additionally formed on the stopper connecting the support main and the cover bottom to restrain the wire soldered to the lamp and fixed to the back side of the support main. Can improve the sex.

Claims (5)

A support main having a liquid crystal panel and a backlight unit therein and supported therein; A cover bottom having a step formed along the edge of the back and supporting and protecting the lower and side surfaces of the support main; An insertion groove penetrating the side surface of the cover bottom and formed to a predetermined depth of the support main; A stopper inserted into the insertion groove to fasten the cover bottom and the support main; A groove formed at an edge of the cover bottom to correspond to the insertion groove; The wire extends from the stopper and is formed to surround the cover bottom along a groove formed at an edge of the cover bottom, and an end thereof is fixed to the step of the cover bottom to constrain the wires soldered to both ends of the lamp of the backlight unit. And an extension part fixed to the rear surface of the cover bottom. The liquid crystal display device according to claim 1, wherein the stopper is divided into two parts at regular intervals. The liquid crystal display device according to claim 2, further comprising a protrusion formed at an end of the stopper divided into two branches. The liquid crystal display of claim 1, wherein the extension portion extending from the stopper has a hook shape. delete

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