KR20060070343A - A flat display device provided with an integrated chassis - Google Patents

Abstract

The present invention relates to a flat panel display device having an integrated chassis. According to an aspect of the present invention, there is provided a flat panel display panel for displaying an image, a backlight assembly for supplying light to the flat panel display device, and a flat panel display panel that receives and supports the backlight assembly and surrounds the side surfaces of the flat panel display panel and the backlight assembly. And an integrated chassis for holding and supporting the flat panel along the top edge of the panel.

Integral chassis, hinges, folds, elastic members

Description

Flat panel display with integrated chassis {A FLAT DISPLAY DEVICE PROVIDED WITH AN INTEGRATED CHASSIS}

1 is an exploded perspective view of a flat panel display device according to an exemplary embodiment of the present invention.

2 is a perspective view illustrating a flat panel display device according to an exemplary embodiment of the present invention.

3 is a cross-sectional view taken along line AA of FIG. 2.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display having an integrated chassis, and more particularly, to a flat panel display having a simplified integrated structure.

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 devices that require 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.

The liquid crystal display is composed of a liquid crystal display panel and a backlight assembly for supplying light to the liquid crystal display panel. A top chassis and a bottom chassis of sus (stainless use steel, stainless steel), respectively, are fixed to each other. Coupling on the top and bottom.

However, disassembling and assembling the parts in various ways, not only the assembly process is complicated, but also the top chassis is bent during the fastening process of the top chassis, and due to excessive coupling, drive integrated circuit chip (drive IC chip) ) Is damaged. In addition, in the liquid crystal display, a top chassis or the like is used as a grounding point, and since the top chassis does not act as a grounding point due to poor contact with the top chassis, an electrostatic discharge (ESD) phenomenon occurs and Static interference also occurs seriously.

The present invention is to solve the above-mentioned problems, to provide a flat panel display device using the integrated chassis to simplify the assembly process and minimize damage to the internal components of the liquid crystal display device.

According to an aspect of the present invention, there is provided a flat panel display apparatus including a flat panel display panel for displaying an image, a backlight assembly for supplying light, and a backlight assembly. It includes an integrated chassis that surrounds the side and securely supports the flat panel along the top edge of the flat panel.

Here, the integrated chassis includes a lower surface portion for accommodating and supporting the backlight assembly, a side portion connected to the lower surface portion and surrounding the sides of the flat panel display panel and the backlight assembly, and an upper surface portion fixedly supporting the flat panel along the upper edge of the flat panel display panel. Include. Here, it is preferable that the lower surface portion and the side portion, and the side portion and the upper surface portion are connected to be folded.

In the integrated chassis, the lower and side portions and the side and the upper portion may be connected to each other so that they can be folded through a hinge.

The flat panel display apparatus according to the present invention further includes a mold frame supporting the flat panel display panel, and the upper surface portion of the integrated chassis is screwed with the mold frame.

The flat panel display apparatus according to the present invention further includes a printed circuit board (PCB) connected to the flat panel display panel and applying a driving signal thereto, wherein the printed circuit board is formed through an opening formed in the lower surface of the integrated chassis. Can be connected externally.                     

An elastic member may be attached below the upper surface of the integrated chassis to be in close contact with the flat panel display panel.

It is preferable that the plurality of side surfaces of the integrated chassis are connected to each side of the lower surface of the integrated chassis separately from each other, and the plurality of top surfaces of the integrated chassis are connected to each side of the integrated chassis separately from each other.

Neighboring side portions of the plurality of side portions of the integrated chassis may be adjacent to each other, and neighboring top portions of the plurality of upper surfaces of the integrated chassis may be adjacent to each other.

The flat panel display panel may be a liquid crystal display panel.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. These embodiments of the present invention are merely for illustrating the present invention, but the present invention is not limited thereto.

1 is an exploded perspective view of a flat panel display device 100 according to an embodiment of the present invention, and shows a flat panel display device 100 having an integrated chassis 10.

The structure of the flat panel display device 100 shown in FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the flat panel display device 100 may be modified in other forms. In addition, although the liquid crystal display panel 50 is shown in FIG. 1 as a flat panel display panel, this is merely to illustrate the present invention, and the present invention is not limited thereto. Therefore, other light receiving flat panel display panels can be used.

The flat panel display apparatus 100 according to an exemplary embodiment of the present invention shown in FIG. 1 includes a liquid crystal display panel 50 displaying an image and a backlight assembly 70 supplying light thereto.

The liquid crystal display panel assembly 40 includes a liquid crystal display panel 50, a chip on film (COF) 41, 42, and a PCB 43. The liquid crystal display panel 50 includes a TFT substrate 51 composed of a plurality of TFTs (thin film transistors), a color filter substrate 53 positioned on the TFT substrate 51, and a liquid crystal (injected therebetween). Not shown). A polarizer (shown in FIG. 3) is attached to the upper portion of the color filter substrate 53 and the lower portion of the TFT substrate 51 to polarize light.

The TFT substrate 51 is a transparent glass substrate on which a matrix thin film transistor is formed, a data line is connected to a source terminal, and a gate line is connected to a gate terminal. In the drain terminal, a pixel electrode made of transparent indium tin oxide (ITO) as a conductive material is formed.

When electrical signals are input from the PCB 43 to the data lines and gate lines of the liquid crystal display panel 50 described above, electrical signals are inputted to the source and gate terminals of the TFTs, and the TFTs are input according to the input of these electrical signals. Is turned on or turned off, and an electrical signal necessary for pixel formation is output to the drain terminal.

On the other hand, the color filter substrate 53 is disposed thereon opposite the TFT substrate 51. The color filter substrate 53 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, and a common electrode made of ITO is coated on the entire surface thereof. When power is applied to the gate terminal and the source terminal of the TFT 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. By this electric field, the arrangement angle of the liquid crystal injected between the TFT substrate 51 and the color filter substrate 53 is changed, and the light transmittance is changed according to the changed arrangement angle to obtain a desired pixel.

In order to control the alignment angles of the liquid crystals and the timing at which the liquid crystals are arranged in the liquid crystal display panel 50, a driving signal and a timing signal are applied to the gate line and the data line of the TFT. In order to do this, COFs 41 and 42 are attached. The COFs 41 and 42 are formed by mounting the integrated circuit chips 411 and 421 on the wiring formed of a film, respectively.

The PCB 43 for receiving an image signal from the outside of the liquid crystal display panel 50 and applying a driving signal to the data line and the gate line, respectively, is connected to the data COF 41 attached to the liquid crystal display panel 50. The PCB 43 generates a data signal for driving the flat panel display 100, a gate driving signal, and a plurality of driving signals for applying these signals at an appropriate time, thereby generating the gate driving signal and the data driving signal through the data COF ( 41 is applied to the gate line and the data line of the liquid crystal display panel 50, respectively.

The backlight assembly 70 is provided below the liquid crystal display panel assembly 40 to provide uniform light to the liquid crystal display panel 50. An upper mold frame 60 is positioned above the backlight assembly 70 to support the LCD panel 50, and a lower mold frame 62 is disposed below the backlight assembly 70. The lamp 76 and the like are stored.

The backlight assembly 70 may include a lamp 76 that emits light, a lamp cover 75 that surrounds the lamp 76 to protect the lamp, and guides light emitted from the lamp 76 to guide the liquid crystal display panel 50. The light guide plate 74 to be supplied to the light guide plate, the reflective sheet 79 positioned below the light guide plate 74 to reflect light, and the luminance characteristics of the light emitted from the lamp 76 are secured to transmit the light to the liquid crystal display panel 50. The optical sheet 72 for providing is provided. Although lamp 76 is shown as a light source in FIG. 1, this is merely to illustrate the present invention, but the present invention is not limited thereto. Therefore, a light emitting diode (LED) may be used as a light source, or a light source having a surface light source or a linear light source may be used.

An inverter (not shown), which is a power supply PCB, and a signal conversion PCB (not shown) are installed on the rear surface of the integrated chassis 10. An inverter (not shown) transforms an external power supply to a constant voltage level to provide a lamp 76, and a signal conversion PCB (not shown) is connected to the PCB 43 to convert an analog data signal into a digital data signal and thereby liquid crystal. The display panel 50 is provided. The PCB 43 is folded and connected to a signal conversion PCB (not shown) through an opening 1051 formed in the bottom portion 105 of the integrated chassis 10 as indicated by a dashed-dotted arrow in FIG. 1.

The upper mold frame 60 and the lower mold frame 62 are combined to form the backlight assembly 70, and the liquid crystal display panel assembly 40 is fixedly supported thereon. The backlight assembly 70 and the liquid crystal display panel assembly 40 assembled as described above are fixed by the integrated chassis 10. As shown by four arrows, the integrated chassis 10 is folded to support the sides of the backlight assembly 70 and the liquid crystal display panel assembly 40 by folding the sides thereof.

The integrated chassis 10 accommodates and supports the backlight assembly 70 and wraps and supports the sides of the liquid crystal display panel 50 and the backlight assembly 70. In addition, the integrated chassis 10 is fixedly supported along the top edge of the flat panel display panel 50. The integrated chassis 10 includes an upper surface portion 101, a side portion 103, a lower surface portion 105, and the like.

The upper surface portion 101 fixes and supports the liquid crystal display panel 50 along the upper edge of the liquid crystal display panel 50. It is connected. In FIG. 1, four upper surface portions 101 are illustrated, but these are merely to illustrate the present invention, and the present invention is not limited thereto. Accordingly, the upper surface portion 101 may be formed separately from each other, and may be formed in different numbers. Screw holes 1013 are formed at both ends of each upper surface portion 101 to be screwed with another screw hole 601 formed in the upper mold frame 60. An elastic member 1011 such as rubber is attached under the upper surface portion 101 to be in close contact with the liquid crystal display panel 50.

The side portion 103 is connected to the upper surface portion 101 and the lower surface portion 105 and surrounds and fixes sides of the liquid crystal display panel 50 and the backlight assembly 70. The side parts 103 are separated from each other one by one to be connected to each side of the lower surface part 105 of the integrated chassis 10 in total.

The lower surface portion 105 receives and supports the backlight assembly 70. An opening 1051 may be formed in the lower surface portion 105 to remove the PCB 43 to the outside.

In the integrated chassis 10, the upper surface portion 101 and the side portion 103, and the side portion 103 and the lower surface portion 105 are connected to be folded. The upper surface portion 101 and the side surface portion 103 and the side surface portion 10 and the lower surface portion 105 may be connected through the hinge 14 so as to be folded. Here, the hinge is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, other folding means can also be used.

2 is a perspective view illustrating a flat panel display device 100 according to an embodiment of the present invention, in which all internal components of the flat panel display device 100 shown in FIG. 1 are combined.

The flat panel display device 100 having the structure shown in FIG. 2 is formed by folding the integrated chassis 10 to cover side surfaces of the liquid crystal display panel assembly 40 (shown in FIG. 1) and the backlight assembly 70 (shown in FIG. 1). Is done. The screw 12 is fastened to the screw hole 1013 formed in the upper surface portion 101 of the integrated chassis 10 to screw the integrated chassis 10 and the upper mold frame 601 (shown in FIG. 1) located thereunder. To combine. Accordingly, the integrated chassis 10 is mounted to the outside of the flat panel display 100 and is firmly fixed. Since the integrated chassis 10 is assembled in a robust and simple manner as described above, it is possible to prevent component damage inside the flat panel display 100 when assembling and have a high reliability for grounding. Therefore, EMI can be reduced.

Among the plurality of side portions 103 constituting the integrated chassis 10, the neighboring side portions 103 are adjacent to each other at both ends thereof. Accordingly, foreign matter cannot penetrate between the side portions 103. In addition, neighboring upper surface portions 101 among the plurality of upper surface portions 101 of the integrated chassis 10 are adjacent to each other at both ends thereof. Therefore, foreign matter cannot penetrate between the upper surface portions 103.

FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 and illustrates an internal structure of the flat panel display 100.

As shown in FIG. 3, an elastic member 1011 is attached below the upper surface portion 101 of the integrated chassis 10. Examples of the elastic member 1011 include rubber and the like. Since the integrated chassis 10 is sus material, the liquid crystal display panel 50 may be damaged by external impact when the integrated chassis 10 has a considerable strength and is in direct contact with the liquid crystal display panel 50. Therefore, the elastic member 1011 is attached to alleviate external shock. In addition, since the elastic member 1011 is tightly fixed between the integrated chassis 10 and the liquid crystal display panel 50, a side effect of preventing the intrusion of foreign matter is obtained.

As shown in FIG. 3, the upper surface portion 101 and the side portion 103 and the side portion 103 and the lower portion 105 of the integrated chassis 10 are connected to each other using a hinge 14 using an iron core 141 or the like. It is connected to be foldable. Accordingly, the integrated chassis 10 may be folded to fix and support the flat panel display device 100.

As described above, since the flat panel display device according to the present invention includes an integrated chassis, not only the manufacturing process of the flat panel display device is simplified but also the grounding is good, thereby reducing EMI. It also reduces the chance of ESD occurring.

In addition, since the lower and side portions of the integrated chassis and the side portions and the upper surface portions are connected to be foldable, the integrated chassis can be folded and fixed to the flat panel display.

Here, since the lower surface and the side portion, the side portion and the upper surface portion of the integrated chassis are connected via a hinge, it can be easily folded.                     

Since the upper surface of the integrated chassis is screwed with the mold frame, it is firmly fixed to the flat panel display.

Since the printed circuit board is externally connected through the opening formed in the lower surface of the integrated chassis, the entire wiring connection is easy even when using the integrated chassis.

Since the elastic member is attached under the upper surface portion of the integrated chassis to be in close contact with the flat panel display panel, it is possible to prevent the liquid crystal display panel from being damaged by the integrated chassis during external impact, and to prevent foreign substances from entering.

Since the plural side parts of the integrated chassis are connected to each side of the lower surface part separately from each other, and the plural upper surface parts are connected to each side part separately from each other, the assembly of the integrated chassis is easy.

The neighboring side parts of the plurality of side parts of the integrated chassis are adjacent to each other, and the neighboring top parts of the plurality of top parts are adjacent to each other, and thus, foreign matter cannot enter.

Since flat panel displays are widely used liquid crystal display panels, there is an advantage of excellent application possibilities.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (9)

Flat panel display panel for displaying images, A backlight assembly supplying light to the flat panel display panel, and An integrated chassis accommodating and supporting the backlight assembly and fixing the flat panel along the top edge of the flat panel, while surrounding the side of the flat panel and the backlight assembly. Flat display device comprising a. In claim 1, The integrated chassis, A lower surface part for receiving and supporting the backlight assembly; A side portion connected to the bottom portion to surround side surfaces of the flat panel display panel and the backlight assembly; An upper surface part which fixes and supports the flat panel display along an upper edge of the flat panel display panel And a lower surface portion, the side surface portion, and the side surface portion and the upper surface portion to be foldable. In claim 2, The flat panel display of claim 1, wherein the lower surface portion and the side portion, and the side portion and the upper surface portion are foldable through a hinge. In claim 2, And a mold frame supporting the flat panel display panel, wherein an upper surface of the integrated chassis is screwed to the mold frame. In claim 2, A printed circuit board (PCB) connected to the flat panel display panel to apply a driving signal to the flat panel display panel; And the printed circuit board is externally connected through an opening formed in a lower surface of the integrated chassis. In claim 2, And a resilient member attached under the upper surface of the integrated chassis to be in close contact with the flat panel display panel. In claim 2, And a plurality of side surfaces of the integrated chassis are connected to each side of the lower surface of the integrated chassis, and the plurality of top surfaces of the integrated chassis are connected to each side of the integrated chassis. In claim 7, And adjacent side parts of the plurality of side parts of the integrated chassis are adjacent to each other, and adjacent top surfaces of the plurality of top parts of the integrated chassis are adjacent to each other. In claim 1, And the flat panel display panel is a liquid crystal display panel.

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