KR19980068072U - LCD Display Module - Google Patents

Abstract

The present invention relates to an LCD module, in which an LCD module having a backlight and a plastic frame for fixing the backlight and a holder covering the upper surface of the LCD module has a lower chassis connected to the module surface having a rectangular frame shape, and has a side wall of the plastic frame. It is extended to the to disperse the heat generated in the backlight by preventing the deterioration of the characteristics of the LCD device is a technology that can improve the characteristics and reliability of the LCD device.

Description

LCD Display Module

The present invention relates to a liquid crystal display (hereinafter referred to as LCD) module, and more particularly, to a technology for solving the shortcomings of heat caused by dispersing heat generated from a backlight to another part.

LCD, a type of flat panel display, is an apparatus that changes the optical anisotropy by applying an electric field to a liquid crystal, which combines the liquidity of liquid and the optical characteristics of crystal, and consumes more power than a conventional cathode ray tube. It is low, easy to thin and short, large size and high resolution is widely used.

In general, an LCD panel includes a liquid crystal in which a transparent electrode pattern, a lower liquid crystal substrate on which a pixel electrode is connected to a switching element, and an upper liquid crystal substrate on which a common electrode is formed are bonded by a failure turn and a spacer, and a liquid crystal is sealed in a space therebetween. Form.

Since the LCD panel does not display the screen independently, a light emitting device, for example, an EL (electroluminescence) device or a light emitting diode (LED) panel is provided on the bottom. Or in the form of a module with a cold cathod fluorescence lamp (hereinafter referred to as CCFL).

In the case of a large LCD, a backlight panel such as CCFL and an LCD connected to the PCB are sequentially mounted on the plastic plane, and a holder of a rectangular frame shape is covered on the top thereof, and the legs of the holder are bent and fixed.

At this time, a lower chassis of a metal material is attached to the lower part of the frame to protect and fix the PCB or the internal structure.

The lower chassis is connected to the module holder to dissipate heat generated from the backlight panel.

1 is a partial cross-sectional view of an LCD module according to the prior art, showing an example of a side light portion.

First, a backlight panel having a CCFL 15 and a light guide plate 13 is mounted on the plastic frame 27, and the LCD cell 11 is fixed on the upper side of the backlight panel, and the side of the LCD cell 11 is Attach the PCB (17) connected by the tap-IC (19). At this time, the tab-IC 19 and the PCB substrate 17 are connected by soldering.

In addition, a holder 25 having a rectangular frame shape for fixing the LCD cell 11, the PCB 17, the tab-IC 19, the backlight, and the plastic frame 27 is covered. The lower chassis 30 is attached to protect internal structures such as the PCB 17 and to dissipate heat generated from the CCFL.

In the LCD module according to the related art, a portion of the lower chassis connected to the module holder is a leg of the module holder, and the number or area thereof is weak compared to the whole, resulting in low heat dissipation time or efficiency. Therefore, the LCD panel has a problem in that visibility is lowered during driving.

Therefore, in order to solve the problems of the prior art, the present invention extends the side wall of the lower chassis to the side wall of the frame so that a large area is in contact with the holder, thereby facilitating the transfer of heat generated from the backlight panel, thereby deteriorating characteristics due to heat. The purpose is to provide an LCD module that can prevent the.

1 is a partial cross-sectional view of an LCD module according to the prior art.

2 is a partial cross-sectional view of a liquid crystal display module according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

11: LCD cell 13: Light guide plate

15: CCFL17: PCB

19: Tap-IC21: Chip

23 hole 25 holder

27: plastic frame 30: lower chassis

32: screw

LCD module according to the present invention to achieve the above object;

In the LCD module provided with a backlight and a plastic frame for fixing it to the lower LCD,

The side wall of the lower chassis mounted to the bottom of the frame extends to the side wall of the frame is connected to the module holder, characterized in that to dissipate heat generated in the backlight panel.

On the other hand, the principle of the present invention for achieving the above object, by forming a dummy pattern formed in the lead portion of the tab-IC to form a separate dummy pattern on the pad portion to prevent the connection failure of the pad due to external impact This eliminates the need to increase the number of connection pads on the tab-IC and PCB boards.

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

2 is a schematic cross-sectional view showing an LCD module according to an embodiment of the present invention.

First, the lower chassis 30 is provided under the plastic frame 27 fixing the backlight (not shown) provided under the LCD (not shown), and is formed to be connected to the module holder 25 having a square frame shape. Some parts are fixed to the frame by screws 32.

In this case, the lower chassis 30 is connected to the module holder 32 to dissipate heat generated by the backlight lamp (not shown).

As described above, the LCD module according to the present invention has the effect of improving the characteristics and reliability of the LCD device by preventing the deterioration of characteristics caused by any one part of the heat by dispersing heat generated from the backlight to the entire LCD module. .

Claims (2)

In the LCD module provided with a backlight and a plastic frame for fixing it to the lower LCD, The side wall of the lower chassis mounted to the lower portion of the frame extends to the side wall of the frame is connected to the module holder, characterized in that dissipating heat generated in the backlight panel. The LCD module of claim 1, wherein the lower chassis is fastened to the module holder by a screw.