KR101621557B1 - Liquid crystal display device - Google Patents

Abstract

The liquid crystal display of the present invention may include a liquid crystal display module, an outer case, a system driving unit, a data driving PCB, a speaker module, or a power module. The present invention is characterized in that a system driver, a data driver PCB, a speaker module or a power module are disposed on the rear surface of an outer case, a speaker module or a power module is connected to the data driver PCB via a connection cable, And a flexible circuit board. Accordingly, the length of the connection cable for controlling or driving the speaker module or the power module is reduced, the structure of the liquid crystal display device is simplified, and the assembling property of the liquid crystal display device can be improved.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display, and more particularly, to a liquid crystal display capable of simplifying a structure and improving assembling performance.

A CRT (cathode ray tube), which is one of the widely used display devices, is mainly used for monitors such as a TV, a measurement device, and an information terminal device. However, due to the weight and size of the CRT itself, Could not respond positively to the response of

Therefore, in the trend of miniaturization and lightening of various electronic products, CRT has a certain limit in terms of weight and size, and is expected to be replaced with a liquid crystal display (LCD) using an electric field optical effect, a gas discharge A plasma display panel (PDP) using an electroluminescent effect, and an EL display device (ELD) using an electroluminescent effect. Among them, researches on a liquid crystal display device are being actively carried out.

Liquid crystal display devices are becoming more and more widespread due to features such as lightness, thinness, and low power consumption driving. Accordingly, the liquid crystal display device is proceeding in the direction of large-sized, thin, and low power consumption in response to the demand of the user.

2. Description of the Related Art [0002] A liquid crystal display device is a display device that displays an image by adjusting the amount of light transmitted through a liquid crystal, and is widely used because of its advantages such as thinness and low power consumption.

Since the liquid crystal display device is not a display device that emits light by itself, unlike a CRT, a backlight unit including a separate light source for providing light for visually expressing an image is provided on the back surface of the liquid crystal display panel .

The backlight unit is divided into the edge type and the direct type according to the position of the light source.

The edge type backlight unit is mainly applied to a liquid crystal display device of a comparatively small size such as a monitor of a laptop type computer and a desktop type computer, and has advantages of uniformity of light, long life, and advantageous in thinning of a liquid crystal display device .

The direct-type backlight unit has been developed mainly as the size of the liquid crystal display device starts to become larger than 20 inches, and a plurality of light sources are disposed on the lower surface of the diffusion plate to direct light directly to the front surface of the liquid crystal display panel will be. Such a direct-type backlight unit is mainly used for a large-screen liquid crystal display device which requires a high luminance because the utilization efficiency of light is higher than that of the edge type.

The liquid crystal display device includes a liquid crystal display module in which a liquid crystal display panel and a backlight unit are assembled, and a system case is assembled on the rear surface of the liquid crystal display module, and upper and lower system cases surrounding the upper and lower portions of the liquid crystal display module except for the display area are assembled .

On the rear surface of the liquid crystal display module, a plurality of speakers provided in the upper and lower system cases and a wire drawn out from the power supply unit are connected to the system driving unit.

However, in a general liquid crystal display device, a separate fixing member for fixing a wire for connecting the external configuration such as the speaker and the power supply unit to the system driving unit is used, There is a problem that the connection structure is complicated and the assemblability is deteriorated.

An object of the present invention is to provide a liquid crystal display device which can simplify the structure and improve the assemblability.

According to an embodiment of the present invention,

A liquid crystal display module; An outer case surrounding the upper edge, the side surface, and the lower surface of the liquid crystal display module; A system driver provided at the center of the rear surface of the outer case; A data driving PCB provided at a lower portion of the rear surface of the outer case; A plurality of speaker modules provided on both sides of the data driving PCB and connected to the data driving PCB; And a power module disposed in an area adjacent to the speaker module and connected to the data driving PCB.

A liquid crystal display device according to an embodiment of the present invention is configured such that a panel control signal and a video signal from a system driving unit provided at the rear center of an outer case are supplied to a data driving PCB provided at a lower portion of the rear side of an outer case, The first and second speaker modules and the power module adjacent to the data driving PCB transmit and receive signals to and from the system driving unit via the data driving PCB to simplify the back surface structure of the liquid crystal display.

Therefore, the present invention has the advantage of improving the assemblability of the liquid crystal display device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail.

FIG. 1 is an exploded perspective view illustrating a liquid crystal display module, FIG. 2 is a perspective view illustrating a rear surface of a liquid crystal display device according to an exemplary embodiment of the present invention, FIG. 3 is a cross- FIG. 2 is a schematic view showing a connection relationship. FIG.

1 to 3, a liquid crystal display device according to an embodiment of the present invention includes a liquid crystal display module 100, an outer case 110 surrounding the upper edge, the side surface and the lower surface of the liquid crystal display module 100, A supporting base 203 for supporting the liquid crystal display module 100 and a pedestal 205 connected to the supporting base 203.

The liquid crystal display module 100 includes a liquid crystal display panel 110 for displaying an image, a support main body 118 for supporting an edge of the liquid crystal display panel 110, And a backlight unit 120 for providing light.

The liquid crystal display panel 110 includes a color filter substrate 111, a thin film transistor substrate 113 and a liquid crystal layer sandwiched between the two substrates so as to face each other and maintain a uniform cell gap.

Although not shown in detail, the color filter substrate 111 and the TFT substrate 113 will be described in detail. In the TFT substrate 113, a plurality of gate lines and data lines intersect to define pixels, A thin film transistor (TFT) is provided for each crossing region of the pixels and is connected in one-to-one correspondence with the pixel electrodes mounted on the respective pixels.

The color filter substrate 111 includes color filters of R, G, and B colors corresponding to the respective pixels, a black matrix for covering the gate lines, the data lines, the thin film transistors, etc., .

A data driving PCB 115 for supplying a driving signal to the gate lines and the data lines is provided at the edge of the liquid crystal display panel 110.

The data driving PCB 115 is electrically connected to the liquid crystal display panel 110 by a chip on film (COF) 117. Here, the COF 117 may be changed to a TCP (Tape Carrier Package).

The backlight unit 120 disposed at the lower portion of the liquid crystal display panel 110 includes a bottom cover 180 having a rectangular box shape with an open top and a metal PCB 160 disposed inside one side of the bottom cover 180, , And a plurality of light emitting diodes (150) mounted on the metal PCB (160).

The backlight unit 120 includes a light guide plate 140 disposed in parallel with the light emitting diode 150 to convert the light into a light spot and a light guide plate 140 disposed below the light guide plate 140, A reflective sheet 170 for reflecting the light emitted from the light guide plate 140 in the direction of the light guide plate 110 and optical sheets 130 disposed on the light guide plate 140 for diffusing and condensing the light emitted from the light guide plate 140.

The optical sheets 130 include a diffusion sheet 133 for diffusing light, a light condensing sheet 132 for condensing diffused light, a protective sheet 132 for protecting a light condensing pattern formed on the light condensing sheet 132 131).

A system driving unit 210 and a power supply unit 213 for generating various power supply voltages are provided on a rear surface of the outer case 201.

The system driver 210 includes a panel driver for controlling the liquid crystal display panel 110 and an LED driver for driving the LED 150.

The LED driver may be separately provided on the rear surface of the outer case 201. The LED driver may be mounted on the rear surface of the outer case 201, .

The data driving PCB 115 of the present invention is disposed at the lower rear surface of the outer case 201 by the flexible COF 117.

The first and second speaker modules 230a and 230b are provided at both ends of the outer case 201. The first and second speaker modules 230a and 230b are spaced apart from the first speaker module 230a by a predetermined distance, Module 240 is provided.

A liquid crystal display device according to an embodiment of the present invention includes a data driving PCB 115 in a lower direction from a system driving part 210 disposed at the rear center of an outer case 201, The first speaker module 230a and the second speaker module 230b are provided in the first speaker module 230a and the power module 240 is provided in the area adjacent to the first speaker module 230a.

The first and second speaker modules 230a and 230b are connected to the data driving PCB 115 by first and second connection cables 231a and 231b, respectively.

The power module 240 is connected to the data driving PCB 115 by a third connection cable 241.

The data driving PCB 115 and the system driving unit 210 are connected by a first flexible circuit board 221.

The power supply unit 213 and the system driving unit 210 are connected by a second flexible circuit board 223.

The first and second speaker modules 230a and 230b and the power module 240 of the present invention are connected to the data driving PCB 115 by first to third connecting cables 231a, 231b and 241, And is controlled by the system driving unit 210 connected to the data driving PCB 115.

Although not shown in the drawing, the data driving PCB 115 is provided with a separate wiring pattern for transmitting signals between the power module 240, the first and second speaker modules 230a and 230b, and the system driver 210 .

The liquid crystal display according to an embodiment of the present invention as described above includes the panel control signal PCS and the image signals R, G, and B Data from the system driver 210 provided at the center of the rear surface of the outer case 201, The first and second speaker modules 230a and 230b provided on both sides of the data driving PCB 115 are connected to the data driving PCB 115 provided at the lower portion of the rear surface of the outer case 201, The power module 240 transmits / receives a signal to / from the system driver 210 via the data driving PCB 115, thereby simplifying the back surface structure of the liquid crystal display device.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1 is an exploded perspective view showing a liquid crystal display module

2 is a perspective view illustrating a rear surface of a liquid crystal display device according to an embodiment of the present invention.

FIG. 3 is a view schematically showing a connection relationship of structures arranged on the rear side of the liquid crystal display device of the present invention.

Claims (8)

A liquid crystal display module; An outer case surrounding the upper edge, the side surface, and the lower surface of the liquid crystal display module; A system driver disposed at the center of the rear surface of the outer case; A data driving PCB disposed at a rear lower portion of the outer case; A speaker module disposed on one side of the data driving PCB; A first connection cable for electrically connecting the data driving PCB and the speaker module; And And a first flexible circuit board electrically connecting the data driving PCB and the system driving unit, Wherein the data driving PCB includes a wiring pattern for electrically connecting the system driving unit and the speaker module. delete delete delete The method according to claim 1, A power supply unit disposed on a rear surface of the outer case at a predetermined distance from the system driving unit; And And a second flexible circuit board electrically connecting the system drive unit and the power supply unit. delete A liquid crystal display module; An outer case surrounding the upper edge, the side surface, and the lower surface of the liquid crystal display module; A system driver disposed at the center of the rear surface of the outer case; A data driving PCB disposed at a rear lower portion of the outer case; A power module disposed on one side of the data driving PCB; A second connection cable for electrically connecting the data driving PCB and the power module; And And a first flexible circuit board electrically connecting the data driving PCB and the system driving unit, Wherein the data driving PCB includes a wiring pattern for electrically connecting the system driving unit and the power module. 8. The method of claim 7, A power supply unit disposed on a rear surface of the outer case at a predetermined distance from the system driving unit; And And a second flexible circuit board electrically connecting the system drive unit and the power supply unit.

Images