KR20070068085A - Liquid crystal display module - Google Patents

Abstract

An LCD(Liquid Crystal Display) module is provided to interpose a sealing member between a top chassis and an LCD panel, thereby preventing foreign substances from infilterating. An LCD panel displays an image. A top chassis(300) has an opening portion for exposing the LCD panel to the outside and encapsulates the circumference of the LCD panel. A sealing member(400) is located between the LCD panel and the top chassis and seals a gap between the top chassis and the LCD panel. The sealing member is located at a side of the top chassis having the opening portion. The sealing member has a ring shape formed along the opening portion and is made of silicon materials. The top chassis plays a role of receiving the LCD panel together with a bottom chassis. Tape is also used as the sealing member.

Description

Liquid Crystal Display Module {LIQUID CRYSTAL DISPLAY MODULE}

1 is an exploded perspective view showing a liquid crystal display module according to the present invention.

FIG. 2 is a cross-sectional view of the liquid crystal display module of FIG. 1 taken along line AA ′.

Figure 3 is a perspective view showing a sealing member coupled to the top chassis in accordance with the present invention.

4 is a flowchart illustrating a method of manufacturing a liquid crystal display module according to the present invention.

Explanation of symbols on the main parts of the drawings

100: backlight unit 150: mold frame

160: bottom chassis 200: display unit

210: liquid crystal display panel 300: top chassis

400: sealing member

The present invention relates to a liquid crystal display module, and more particularly, to a liquid crystal display module that can prevent damage to the liquid crystal display panel.

In general, a liquid crystal display (LCD) may be defined as a device that performs a display using a liquid crystal whose light transmittance is changed according to the intensity of an electric field. Such a liquid crystal display device has an advantage that it can be implemented as a flat panel type display device having a thin thickness.

The liquid crystal display device includes a liquid crystal display panel (LCD panel), a backlight unit, a bottom chassis for accommodating and fixing the liquid crystal display panel (LCD), and a bottom chassis to prevent the liquid crystal display panel from being detached. Includes a tower chassis that combines.

The liquid crystal display panel includes a thin film transistor substrate (TFT), a color filter substrate (CF) facing the thin film transistor substrate, and an electrical signal interposed between the thin film transistor substrate and the color filter substrate. It includes a liquid crystal that changes the transmittance of light as is applied.

On one side of the thin film transistor substrate, a connection member, which is a kind of flexible circuit board, is attached to control the liquid crystal. A printed circuit board that receives an image signal from the outside and applies a driving signal to the thin film transistor substrate is connected to the connection member.

The backlight unit may include a lamp for providing light, an inverter electrically connected to the lamp, and an inverter for driving the lamp, and increasing the uniformity and brightness of the light provided from the lamp to the liquid crystal display panel. It includes an optical member. The optical member includes a light guide plate for converting the light of the line light source provided from the lamp into the light of the surface light source.

The liquid crystal display panel and the backlight unit are sequentially received in a bottom chassis, which is a storage container, and the bottom chassis is coupled to a top chassis facing the bottom chassis.

Such a conventional liquid crystal display module has the following problems.

First, a split phenomenon of the liquid crystal display panel due to the top chassis may occur. The top chassis is coupled to the bottom chassis while surrounding the outer portion of the liquid crystal display panel. In this case, the top surface of the liquid crystal display panel may be in contact with the top chassis, and the top chassis is made of a hard metal material as compared with the top surface of the liquid crystal display panel. May be worn.

Second, foreign matter may penetrate into the liquid crystal display module. Since the top chassis and the liquid crystal display panel are not completely in contact with each other, a gap may be formed between the top chassis and the foreign material to penetrate into the liquid crystal display module through the gap.

An object of the present invention is to provide a liquid crystal display module that can prevent the top surface of the liquid crystal display panel is worn.

Another object of the present invention is to provide a liquid crystal display module that can minimize the gap formed between the top chassis and the liquid crystal display panel.

According to the present invention, a liquid crystal display module includes a liquid crystal display panel for displaying an image, a top chassis surrounding an outer portion of the liquid crystal display panel, positioned between the liquid crystal display panel and the top chassis, and between the top chassis and the liquid crystal display panel. It includes a sealing member for sealing.

The sealing member may be located on one surface of the top chassis in which the opening is formed.

The sealing member may have a ring shape formed along the top chassis.

The sealing member may be made of silicon.

According to the present invention, a method of manufacturing a liquid crystal display module includes coupling a sealing member to one surface of a top chassis, placing the top chassis on an upper surface of the liquid crystal display panel, and combining the top chassis and the liquid crystal display panel. It comprises the step of.

The coupling of the sealing member to one surface of the top chassis may include applying a sealing member to one surface of the top chassis in contact with the liquid crystal display panel.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 4. Embodiment of the present invention may be modified in various forms, the scope of the present invention should not be construed as limited to the embodiments described below. This embodiment is provided to explain in detail the present invention to those skilled in the art. Accordingly, the shape of each element shown in the drawings may be exaggerated to emphasize a more clear description.

1 is an exploded perspective view illustrating a liquid crystal display module 10 according to the present invention, and FIG. 2 is a cross-sectional view of the liquid crystal display module of FIG.

1 and 2, the liquid crystal display module 10 includes a backlight unit 100 that generates light, a display unit 200, and a top chassis 300.

The backlight unit 100 includes a light guide plate 110, first and second lamps 112 and 114, a reflective plate 130, an optical sheet 140, a mold frame 150, and a bottom chassis 160. To the display unit 200.

In detail, the light guide plate 110 changes the path of the light emitted from the first and second lamps 112 and 114, and preferably changes the line light source to a surface light source to provide the optical sheet 140. In the drawings, a flat type light guide plate having the same thickness is illustrated, but a wedge type light guide plate having a different thickness may be employed.

The first and second lamps 112 and 114 are provided at both sides of the light guide plate 110 to generate light to the light guide plate 110. The reflecting plate 130 is formed in a kind of sheet, disposed under the light guide plate 110, and reflects the light leaked from the light guide plate 110 to the light guide plate 110 to increase the light efficiency. The optical sheet 140 is formed of a diffusion sheet, a prism sheet, or the like, and improves optical characteristics by using a method such as uniforming the luminance of light emitted from the light guide plate 110 and condensing the light on the display unit 200. to provide.

The mold frame 150 is accommodated in the bottom chassis 160 and sequentially received in the bottom chassis 160, the light guide plate 110, the first and second lamps 112 and 114, and optical sheets ( Block the flow of the 140, and supports the display unit 200 that is seated during assembly.

The bottom chassis 160 includes a plurality of partition walls protruding from the edge of the bottom surface to define an accommodation space for accommodating the light guide plate 110 and the reflector plate 130. The bottom chassis 160 sequentially accommodates the reflecting plate 130, the first and second lamps 112 and 114, and the light guide plate 110.

The display unit 200 includes a liquid crystal display panel 210, a gate printed circuit board 220, a data printed circuit board 230, a gate side tape carrier package (TCP) 240, and a data side tape carrier package. 250. The display unit 200 is disposed above the backlight unit 100 to display a screen by the light emitted from the backlight unit 100.

Specifically, the liquid crystal display panel 210 includes a color filter substrate 212, a thin film transistor substrate 214 on which a plurality of thin film transistors are arranged, a color filter substrate 212, and a thin film transistor substrate 214. ) And a liquid crystal (not shown) formed therebetween, a first polarizer 216 formed on the color filter substrate 212, and a second polarizer 218 formed under the thin film transistor substrate 214.

More specifically, the color filter substrate 212 is a substrate in which RGB pixels, which are color pixels in which a predetermined color is expressed while light passes, are formed by a thin film process. A common electrode made of indium tin oxide (ITO) is coated on the front surface of the color filter substrate 212.

The thin film transistor substrate 214 is a transparent glass substrate on which thin film transistors (not shown) on a matrix are formed. A data line is connected to a source terminal of the thin film transistors, and a gate line is connected to a gate terminal of the thin film transistors. In addition, a pixel electrode made of indium tin oxide (ITO), which is a transparent conductive material, is formed in the drain terminal. When an electrical signal is input to the data line and the gate line, an electrical signal is input to a source terminal and a gate terminal of each thin film transistor, and the thin film transistor is turned on or off depending on the input of the electrical signal. As a result, an electrical signal necessary for pixel formation is output to the drain terminal.

When power is applied to the gate terminal and the source terminal of the transistor of the thin film transistor substrate 214 and the thin film transistor is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate 213. The array angle of the liquid crystal injected between the thin film transistor substrate 214 and the color filter substrate 213 is changed by the electric field, and the light transmittance is changed according to the changed array angle to obtain a desired pixel.

As shown, a gate side tape carrier package 240 is attached to the gate side of the liquid crystal display panel 210 to determine the timing of applying the gate driving signal, and the data side of the liquid crystal display panel 210 determines the timing of applying the data driving signal. The side tape carrier package 250 is attached.

The gate printed circuit board 220 is connected to the gate side tape carrier package 240 to apply a driving signal to the gate line. The data printed circuit board 230 is connected to the data side tape carrier package 250 to receive an image signal from the outside of the liquid crystal display panel 210 and apply a driving signal to the data line.

Although the liquid crystal display device includes a data printed circuit board 220 and a gate printed circuit board 230 separately, an integrated printed circuit board in which the data printed circuit board 220 and the gate printed circuit board 230 are integrated. Only one may be provided (not shown).

Meanwhile, as illustrated in FIG. 2, the top chassis 300 accommodates the backlight unit 100 and the display unit 200 through fastening with the bottom chassis 160 of the backlight unit 100. An opening 320 for exposing the liquid crystal display panel 210 to the outside is formed at the center of the top chassis 300.

The sealing member 400 is interposed between the top chassis 300 and the liquid crystal display panel 210. More specifically, the sealing member 400 is interposed between the top chassis 300 and the first polarizing plate 216. The sealing member 400 seals a gap that may be formed between the top chassis 300 and the liquid crystal display panel 210, and prevents the liquid crystal display panel 210 from being worn by the metal top chassis 300. Intervened to do so.

3 is a perspective view showing a sealing member 400 coupled to the top chassis 300 according to the present invention.

As shown in FIG. 3, the sealing member 400 is provided on one surface of the top chassis 300 which may contact the liquid crystal display panel 210. The sealing member 400 may be provided along an outer circumference of the opening 320 formed at the center of the top chassis 300.

The sealing member 400 may seal between the top chassis 300 and the liquid crystal display panel 210 by a certain elasticity, and may use a silicon material that can be easily provided on the top chassis 300. have. In addition, a material such as a tape capable of sealing a gap formed between the top chassis 300 and the liquid crystal display panel 210 may be used.

When the top chassis 300 is fastened to the bottom chassis 160 after the sealing member 400 is provided on the top chassis 300, the sealing member 400 is disposed between the top chassis 300 and the first polarizing plate 216. Intervened in

Unlike the present embodiment, the sealing member 400 may be installed to be interposed between the top chassis 300 and the color filter substrate 212 in a state where the top chassis 300 and the bottom chassis 160 are fastened. In order to prevent foreign matter from penetrating at the source, the sealing member 400 may be provided to be as close as possible to the opening 320.

In addition, although the sealing member 400 is provided on the top chassis 300 in this embodiment, it may alternatively be provided on the first polarizing plate 216 or the color filter substrate 212.

4 is a flowchart illustrating a method of manufacturing the liquid crystal display module 10 according to the present invention.

First, the sealing member 400 is coupled to one surface of the top chassis 300 (S10). The sealing member 400 should have a certain height and be able to seal the gap formed between the top chassis 300 and the liquid crystal display panel 210 by the sealing member 400. The sealing member 400 may be provided along an outer circumference of the opening 320 formed at the center of the top chassis 300.

Silicon may be used as the sealing member 400, in addition, a tape that can be easily attached may be used. The foreign matter may be prevented from penetrating into the liquid crystal display module 10 by the sealing member 400, and the liquid crystal display panel 210 may be prevented from being worn by the metal top chassis 300.

Unlike the present embodiment, the sealing member 400 may be provided on the top surface of the first polarizer 216 or the top surface of the color filter substrate 212.

Next, the top chassis 300 is positioned on the upper surface of the liquid crystal display panel 210 (S20). The top chassis 300 serves to accommodate the liquid crystal display panel 210 together with the bottom chassis 160.

Next, the top chassis 300 is mounted on the liquid crystal display panel 210 (S30). When the top chassis 300 is seated on the liquid crystal display panel 210, the sealing member 400 is interposed between the top chassis 300 and the first polarizing plate 216. However, unlike the present embodiment, the sealing member 400 may be interposed between the top chassis 300 and the color filter substrate 212.

As described above, when the sealing member is interposed between the top chassis 300 and the liquid crystal display panel 210, not only can the wear of the liquid crystal display panel be prevented, but also foreign substances penetrate into the liquid crystal display module 10. You can prevent it.

According to the present invention, it is possible to prevent the upper surface of the liquid crystal display panel from being worn by the sealing member interposed between the top chassis and the liquid crystal display panel. In addition, since the gap formed between the top chassis and the liquid crystal display panel may be removed by the sealing member, foreign matter may be prevented from penetrating into the liquid crystal display module.

Claims (6)

A liquid crystal display panel displaying an image; A top chassis having an opening for exposing the liquid crystal display panel to the outside and surrounding an outer portion of the liquid crystal display panel; And a sealing member disposed between the liquid crystal display panel and the top chassis and sealing between the top chassis and the liquid crystal display panel. The method of claim 1, And the sealing member is positioned on one surface of the top chassis in which the opening is formed. The method of claim 2, And the sealing member has a ring shape formed along the opening. The method of claim 1, The sealing member is a liquid crystal display module, characterized in that the silicon material. Coupling a sealing member to one surface of the top chassis; Positioning the top chassis on an upper surface of the liquid crystal display panel; And mounting the top chassis on an upper portion of the liquid crystal display panel. The method of claim 5, Coupling the sealing member to one surface of the top chassis comprises applying a sealing member to one surface of the top chassis in contact with the liquid crystal display panel.

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