KR20080056810A - Large size liquid crystal display - Google Patents

Abstract

A large size LCD(Liquid Crystal Display) is provided to obtain the minimized boundary area width of a tile-shape LCD panel by installing a drive part at the exterior side of the LCD panel and by equipping an asymmetric chassis. A multiple LCD panel(200) comprises a display area for displaying each image and a non-display area for applying a signal to the display area and is arranged to be a tile-shape. A drive part is formed at the non-display area lied in the external edge of the multiple LCD panel having tile-shape. An asymmetric chassis(100,600) covers the non-display area of the multiple LCD panel. The multiple LCD panel is constructed by the first, second, third and the fourth LCD panels and arranged to be a rectangular tile-shape. The first and the third LCD panels are arranged diagonally and mirror-symmetrically, and the second and the fourth LCD panels are arranged diagonally and mirror-symmetrically, respectively.

Description

Large Area Liquid Crystal Display {LARGE SIZE LIQUID CRYSTAL DISPLAY}

1 is a schematic exploded perspective view of a large area liquid crystal display device according to a first embodiment of the present invention;

2 is a schematic plan view of a liquid crystal display panel according to a first embodiment of the present invention.

3 is a schematic plan view of a top asymmetric chassis according to a first embodiment of the present invention;

4 is a schematic exploded perspective view of a large area liquid crystal display device according to a second embodiment of the present invention;

5 is a schematic plan view of a top asymmetric chassis in accordance with a second embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: upper asymmetric chassis 200: tile type liquid crystal display panel

300: optical sheet 400: light source

500: backlight unit 600: lower asymmetric chassis

The present invention relates to a large area liquid crystal display device, and more particularly, to a large area liquid crystal display device having an asymmetric chassis.

 Recently, flat panel displays such as liquid crystal displays (LCDs) and plasma display panels (PDPs) are rapidly developing in place of cathode ray tubes (CRTs).

Among such flat panel displays, liquid crystal displays are used in computers, notebooks, PDAs, telephones, TVs, and audio / video devices due to their light weight, thinness, low power driving, full color, and high resolution. It is expanding into the commercial display area.

As described above, a larger liquid crystal display panel is required for the liquid crystal display device to be used in a commercial display to achieve a great effect. However, the current mass-production technology is the largest size of 57 inches to 65 inches, the larger the price of the larger liquid crystal display panel.

In order to overcome these limitations, liquid crystal displays currently used in commercial displays are implementing large-area liquid crystal displays using tile-type liquid crystal display panels that are inexpensive and have large screens.

However, in the tile type liquid crystal display panel in which a plurality of liquid crystal display panels are arranged in a tile form as described above, a driving unit for driving the liquid crystal display panel is formed in the boundary region and the edge region between the liquid crystal display panels, and thus the screen cannot be displayed. There is a disadvantage in that the width of the boundary region between the liquid crystal display panels which is the non-display region is large.

In addition, as a chassis for protecting the tile type liquid crystal display panel, a chassis in which a non-display area of the tile type liquid crystal display panel, that is, a boundary area between each liquid crystal display panel and an area for covering the edge area is used, has the same width. Therefore, even if a chassis having a small structure is used, there is still room for improvement because it must be manufactured to cover the driving unit formed in the boundary region of the tile type liquid crystal display panel.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a large-area liquid crystal display device capable of minimizing the width of a boundary area of a tiled liquid crystal display panel.

In order to achieve the above object, the present invention provides a plurality of liquid crystal display panels arranged in a tile form, each of which includes a display area in which an image is displayed and a non-display area for applying a signal to the display area, and arranged in the tile form. According to an aspect of the present invention, there is provided a large area liquid crystal display including a driving unit formed in a plurality of liquid crystal display panel outer edge non-display areas, and an asymmetric chassis covering the non-display areas of the plurality of liquid crystal display panels.

The plurality of liquid crystal display panels may include first to fourth liquid crystal display panels, wherein the first to fourth liquid crystal display panels are arranged in a rectangular tile shape, and the driving unit is arranged in a rectangular tile shape. The display panel may be formed in a non-display area other than the boundary area of the first to fourth liquid crystal display panels.

The asymmetrical chassis may include first to fourth asymmetrical chassis, and the first to fourth asymmetrical chassis may be provided on the first to fourth liquid crystal display panels.

In this case, it is preferable that the first liquid crystal display panel and the third liquid crystal display panel are mirror symmetrically in the diagonal direction, and the second liquid crystal display panel and the fourth liquid crystal display panel are mirror symmetrically in the diagonal direction.

In addition, the asymmetrical chassis includes first to fourth asymmetrical chassis, the first to fourth asymmetrical chassis are provided on the first to fourth liquid crystal display panel, the first to fourth asymmetrical The type chassis may be formed integrally.

In addition, it is preferable that the asymmetric chassis has a smaller width of the area covering the boundary area than the area covering the driving part.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Like reference numerals in the drawings refer to like elements.

1 is a schematic exploded perspective view of a large area liquid crystal display device according to a first embodiment of the present invention, FIG. 2 is a schematic plan view of a liquid crystal display panel according to a first embodiment of the present invention, and FIG. A schematic top view of a top asymmetric chassis according to one embodiment.

A large-area liquid crystal display device according to a first embodiment of the present invention includes a tile type liquid crystal display panel 200 having a plurality of liquid crystal display panels arranged in a tile form as shown in FIGS. 1 and 2, and the tile. A plurality of backlight units 500 for supplying light to the liquid crystal display panel 200, and an asymmetric chassis 700 for storing the tile type liquid crystal display panel 200 and the plurality of backlight units 500. Include.

The tile type liquid crystal display panel 200 is for displaying an image. Each of the plurality of liquid crystal display panels includes a thin film transistor substrate 210a, a driver 240 connected to the thin film transistor substrate 210a, and the thin film transistor. It includes a color filter substrate 210b bonded to the substrate 210a. In addition, a liquid crystal layer (not shown) injected between the thin film transistor substrate 210a and the color filter substrate 210b, and a polarizing plate formed to correspond to the color filter substrate 210b and the thin film transistor substrate 210a, respectively. Not shown).

The color filter substrate 210b is a substrate in which red (R), green (G), and blue (B) 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 (not shown) made of a transparent conductor such as indium tin oxide (ITO) or indium zinc oxide (IZO), which is a transparent conductive thin film, is formed on the front surface of the color filter substrate 210b. .

The thin film transistor substrate 210a is a transparent glass substrate in which a thin film transistor (TFT) and a pixel electrode are formed in a matrix form. The data line is connected to the source terminal of the thin film transistors, and the gate line is connected to the gate terminal. In addition, a pixel electrode (not shown) made of a transparent electrode made of a transparent conductive material is connected to the drain terminal. When an electrical signal is input to the data line and the gate line, each thin film transistor is turned on or turned off to apply an electrical signal necessary for pixel formation to a drain terminal.

The driver 240 is used to apply a signal to the gate line and the data line, and includes a data driver 220 and a gate driver 230.

The data driver 220 is for applying a signal to a data line (not shown), and a data side tape carrier package (TCP, 220a) connected to the data line and the data side tape carrier package 220a are connected to each other. Data side printed circuit board 220b.

The gate driver 230 applies a signal to a gate line, and includes a gate side tape carrier package 230a connected to the gate line and a gate side printed circuit board 230b connected to the gate side tape carrier package 230a. It includes.

In this case, each of the tile type liquid crystal display panels 200 may be divided into a display area in which an image is displayed and a non-display area in which a signal is applied to the display area and no image is displayed. 240 is formed.

In addition, the tile type liquid crystal display panel 200 according to the present exemplary embodiment includes the first to fourth liquid crystal display panels 200a to 200d having the above structure and arranged in a tile form, and the first to fourth liquid crystals. The driver 240 is formed in a non-display area that is an edge of the display panels 200a to 200d.

That is, the non-display areas of the upper, right, lower, and left edges of the first to fourth liquid crystal display panels 200a to 200d may be defined as the first to fourth areas A ₁ to A _4, respectively, based on the top view. 2, the data driver 220 is formed in the first region A ₁ and the gate driver 230 is formed in the fourth region A _{4 in} the first liquid crystal display panel 200a. and the third liquid crystal display panel (200c) to the second area data driving unit 220 in (a ₂₎ is formed in the third region is formed in the gate driver 230 in (a _3). In addition, the second liquid crystal display panel (200b) is formed in the first region the gate driver 230 in (A ₁₎ to be formed in the data driver 220, a second area (A _2), a fourth liquid crystal display panel ( The data driver 220 is formed in the second region A ₃ and the gate driver 230 is formed in the fourth region A ₄ .

In addition, the first liquid crystal display panel 200a and the third liquid crystal display panel 200c having the above structure are positioned in diagonal directions with respect to the plan view, and the second liquid crystal display panel 200b and the fourth liquid crystal display panel 200c are arranged in a diagonal direction. The liquid crystal display panels 200d are also disposed in diagonal directions with each other. That is, in the diagonal direction of the first liquid crystal display panel 200a, the mirror symmetry is mirrored on the first liquid crystal display panel 200a so that the data driver 220 and the gate driver 230 may be tiled liquid crystal display panel 200. The third liquid crystal display panel 200c provided at the outside of FIG. In addition, the second and fourth liquid crystal display panels 200b and 200d may also be disposed in diagonal directions with each other, and the fourth liquid crystal display panel 200d may have a second liquid crystal display in a diagonal direction of the second liquid crystal display panel 200b. The data driver 220 and the gate driver 230 are positioned outside the tiled liquid crystal display panel 200 in a mirror symmetry with respect to the panel 200b.

In this case, the tile type liquid crystal display panel 200 according to the present exemplary embodiment having the above structure has the fourth region of the second region A ₂ and the second liquid crystal display panel 200b of the first liquid crystal display panel 200a. The area A ₄ is close to each other, and the third area A ₃ of the second liquid crystal display panel 200b and the first area A ₁ of the third liquid crystal display panel 200c are close to each other. In addition, the fourth region A ₄ of the third liquid crystal display panel 200c and the second region A _{2 of} the fourth liquid crystal display panel 200d are adjacent to each other, and the first region of the fourth liquid crystal display panel 200d is close to each other. The area A ₁ and the third area A ₃ of the first liquid crystal display panel 200a are adjacent to each other and arranged in a tile shape.

As described above, in the tile type liquid crystal display panel 200 according to the present invention, the width of the boundary area may be reduced by forming the driver 240 in the edge area instead of the boundary area.

On the other hand, the plurality of backlight units 500 are for supplying light to the tile type liquid crystal display panel 200, the light source 400 and the optical for adjusting the light emitted from the light source 400 to the surface light source Sheet 300.

The light source 400 may be a point light source such as a light emitting diode (LED) or a line light source or a surface light source lamp such as an electroluminescent lamp (EL) and a cold cathode fluorescent lamp (CCFL). It may include a surface light source such as (Flat Fluorescent Lamp; FFL). In this embodiment, a light emitting diode block equipped with a plurality of light emitting diodes as a light source will be described as an example.

The light emitting diode block according to the present embodiment may include a light emitting diode, a substrate for mounting the light emitting diode, and a connection part formed at one side and the other side of the substrate.

The light emitting diode is a compound semiconductor stacked structure having a pn junction structure, a light emitting chip using a phenomenon of emitting light by recombination of minority carriers (electrons or holes), a base member for mounting the light emitting chip, and an external to the light emitting chip. It may include an external power input member for applying power. In the present embodiment, a plurality of light emitting diodes as described above may be used to satisfy the luminance required by the liquid crystal display.

The substrate is for mounting the light emitting diode and applying external power, and may include a printed circuit board (PCB).

In the substrate according to the present embodiment, a predetermined wiring is formed to mount a plurality of light emitting diodes and to apply external power thereto, and the plurality of light emitting diodes may be electrically connected to each other by the wiring. In addition, the backlight unit according to the present embodiment may be used by arranging a plurality of light emitting diode blocks as described above, and the substrate may include a connector for connecting a plurality of light emitting diode blocks, for example, a connector.

The optical sheet 300 is to improve the quality of the light emitted from the plurality of light emitting diode blocks and to increase the efficiency. In this embodiment, the optical sheet 300 may include a diffusion sheet 320 and a prism sheet 310.

The diffusion sheet 320 is positioned on the upper surface of the plurality of light emitting diode blocks, and uniformly diffuses the light emitted from the plurality of light emitting diode blocks, and transmits the light toward the front direction of the prism sheet 310 and the tile type liquid crystal display panel 200. In order to widen the viewing angle and reduce diffusion of bright spots, bright lines, spots, and the like, it is preferable to be positioned between the plurality of light emitting diode blocks and the prism sheet 310. The diffusion sheet 320 may be manufactured using polycarbonate (PC) resin or polyester (PET) resin.

The prism sheet 310 is intended to be incident on the tile type liquid crystal display panel 200 by increasing the luminance by refracting and condensing the light emitted from the diffusion sheet 320. The light emitting diode may be positioned between the plurality of light emitting diode blocks and the tiled liquid crystal display panel 200. As the prism sheet 310, a strip-shaped micro-prism is formed on a base material such as polyester, and two horizontal and vertical sheets may be used as one set.

The plurality of backlight units 500 according to the present exemplary embodiment having the above structure are provided with first to fourth backlight units 500a to 500d to form lower portions of the first to fourth liquid crystal display panels 200a to 200d. Are located at each.

The asymmetrical chassis 700 is for accommodating the tiled liquid crystal display panel 200 and the plurality of backlight units 500, and includes an upper asymmetrical chassis 100 and a lower asymmetrical chassis 600. .

The upper asymmetric chassis 100 is positioned on the tile type liquid crystal display panel 200 to protect the tile type liquid crystal display panel 200. The upper asymmetric chassis 100 may be configured to cover the first to fourth liquid crystal display panels 200a to 200d. Each of the first to fourth upper asymmetrical chassis (100a ~ 100d) for receiving and protecting.

The first to fourth upper asymmetrical chassis 100a to 100d each include a base portion having a flat plate and an opening, and sidewalls extending from the edge of the base portion. In this case, the opening may be formed to correspond to the display area of the tile type liquid crystal display panel 200.

In addition, as described above, the openings of the upper asymmetric chassis 100 are formed to correspond to the display area of the tile type liquid crystal display panel 200, and thus, the first and second regions of the area formed in the boundary area of the tile type liquid crystal display panel 200. The second width D ₁ , D ₂ is smaller than the first and second lengths L ₁ , L ₂ of the edge region. In this case, the first width D ₁ and the second width D ₂ may have the same size, and the first length L ₁ and the second length L ₂ may also have the same size.

That is, the upper asymmetric chassis 100 is formed to cover the first to fourth areas A ₁ to A ₄ , which are non-display areas of the tile type liquid crystal display panel 200, respectively. Unlike the tile-type liquid crystal display panel according to the related art, in which the driving unit is formed in the boundary area, the liquid crystal display panel 200 includes the driving unit 240 formed outside the tile-type liquid crystal display panel 200 which is a non-display area. The width of the can be minimized.

The lower asymmetric chassis 600 is positioned below the plurality of backlight units 500 to store and protect the plurality of backlight units 500. In this embodiment, the first to fourth backlight units 500a are provided. First to fourth lower asymmetrical chassis 600a to 600d to accommodate ~ 500d).

In the present exemplary embodiment, the tile type liquid crystal display panel 200 and the plurality of backlight units 500 may be accommodated and protected by the upper asymmetric chassis 100 and the lower asymmetric chassis 600 having the above structure. have.

That is, the first backlight unit 500a is positioned under the first liquid crystal display panel 200a, and the first liquid crystal display panel 200a and the first backlight unit 500a are provided with a first upper asymmetric chassis 100a. And a first space formed by the first lower asymmetric chassis 600q. In addition, the second to fourth backlight units 500b to 500d are also disposed at the lower portions of the second to fourth liquid crystal display panels 200b to 200d, respectively. 100d) and the second to fourth spaces formed by the second to fourth lower asymmetric chassis 600b to 600d.

Next, a large area liquid crystal display according to a second exemplary embodiment of the present invention will be described with reference to the accompanying drawings. Descriptions overlapping with the description of the large-area liquid crystal display according to the first embodiment of the present invention will be omitted or briefly described below.

4 is a schematic exploded perspective view of a large-area liquid crystal display according to a second exemplary embodiment of the present invention, and FIG. 5 is a schematic plan view of an upper asymmetric chassis according to the second exemplary embodiment of the present invention.

A large-area liquid crystal display device according to a second embodiment of the present invention includes a tile type liquid crystal display panel 200 having a plurality of liquid crystal display panels arranged in a tile form as shown in FIGS. 4 and 5, and the tile. A plurality of backlight units 500 for supplying light to the liquid crystal display panel 200, and an asymmetric chassis 700 for accommodating the tile type liquid crystal display panel 200 and the backlight unit are included.

The asymmetrical chassis 700 according to the present embodiment includes an upper asymmetrical chassis 100 and a lower asymmetrical chassis 600.

The upper asymmetric chassis 100 is used to accommodate and protect the tile type liquid crystal display panel 200, and includes first to fourth upper spaces to accommodate each of the first to fourth liquid crystal display panels 200a to 200d. It includes.

The lower asymmetric chassis 600 is for accommodating the plurality of backlight units 500 and includes first to fourth lower spaces for accommodating each of the first to fourth backlight units 500a to 500d.

That is, in the asymmetrical chassis 700 according to the present embodiment, unlike the asymmetrical chassis according to the first embodiment of the present invention described above, the upper asymmetrical chassis and the lower asymmetrical chassis are composed of one chassis, and the inside Due to the partition wall formed in the space, a space for accommodating the first to fourth liquid crystal display panels 200a to 200d and the first to fourth backlight units 500a to 500d is provided.

In addition, the upper asymmetric chassis 100 of the asymmetric chassis 700 according to the present embodiment includes a base plate having an opening formed to correspond to the display area of the first to fourth liquid crystal display panels as shown in FIG. 5. And a side wall bent at an edge of the base plate. In this case, sidewalls extending from the base plate are formed in the boundary region of the opening of the base plate, and the first to fourth liquid crystal display panels 200a to 200d are formed in the first to fourth spaces formed by the above structure. This is accommodated.

In addition, the upper asymmetric chassis 100 according to the present embodiment also has the width (L ₁ , L ₂ ) of the area covering the drive unit 240 in the same way as the upper asymmetric chassis according to the first embodiment of the present invention described above It is preferable to be larger than the widths D ₁ and D ₂ of the areas covering the boundary areas of the first to fourth liquid crystal display panels 200a to 200d.

As described above, the large area liquid crystal display according to the present exemplary embodiment may simplify the assembly process by fabricating the upper asymmetric chassis and the lower asymmetric chassis.

Although described above with reference to the drawings and embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit of the invention described in the claims below. I can understand.

For example, in the present exemplary embodiment, although a plurality of backlight units, that is, the first to fourth backlight units, are provided below the first to fourth liquid crystal display panels, the present invention is not limited thereto. It can also be provided in the lower part of 4 liquid crystal display panels.

As described above, the large-area liquid crystal display device according to the present invention may provide a liquid crystal display device which can minimize the width of the boundary area of the tiled liquid crystal display panel by forming a driving unit on the outside of the tiled liquid crystal display panel.

In addition, the present invention can provide a large-area liquid crystal display device having an asymmetric chassis covering the non-display area of the tile type liquid crystal display panel to minimize the width of the boundary area of the tile type liquid crystal display panel.

Claims (6)

A plurality of liquid crystal display panels each arranged in a tile form, each of which includes a display area in which an image is displayed and a non-display area for applying a signal to the display area; A driver formed in a plurality of liquid crystal display panel outer edge non-display areas arranged in the tile form; And asymmetric chassis covering the non-display areas of the plurality of liquid crystal display panels. The method according to claim 1, The plurality of liquid crystal display panels include first to fourth liquid crystal display panels, The first to fourth liquid crystal display panels are arranged in a rectangular tile shape. And the driving part is formed in a non-display area other than a boundary area of the first to fourth liquid crystal display panels arranged in a rectangular tile shape. The method according to claim 2, The asymmetrical chassis includes first to fourth asymmetrical chassis, And the first to fourth asymmetrical chassis are provided on the first to fourth liquid crystal display panels. The method according to claim 2, The first liquid crystal display panel and the third liquid crystal display panel are mirror-symmetrical to each other in a diagonal direction, And the second liquid crystal display panel and the fourth liquid crystal display panel are mirror symmetrically in diagonal directions with each other. The method according to any one of claims 1 to 3, The asymmetrical chassis includes first to fourth asymmetrical chassis, The first to fourth asymmetric chassis are provided on the first to fourth liquid crystal display panel, And the first to fourth asymmetric chassis are integrally formed. The method according to any one of claims 1 to 3, And wherein the asymmetric chassis has a smaller width than a region covering the driving unit.

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