KR100692682B1 - PCB cover of LCD module - Google Patents

Abstract

The present invention discloses a printed circuit board cover of a liquid crystal display module. The printed circuit board cover of the liquid crystal display module of the present invention is disposed so as to cover a printed circuit board having a variable resistor in place and disposed by being turned to the back of the backlight unit to which the liquid crystal panel is bound. The portion is stamped with a size larger than the variable resistor, the inside of the stamped portion is characterized in that divided by a hole of a predetermined shape having a fine circular hole in the center. Here, the stamping is preferably circular, and the inside of the stamped portion is divided by a hole of "+" or "*" shape. According to the present invention, by reducing the hole for adjusting the variable resistance to a fine size, it is possible to significantly reduce the penetration of foreign matters through the hole, thereby preventing the occurrence of a circuit short, liquid crystal The reliability of the display module can be secured.

Description

Printed circuit board cover of liquid crystal display module {PCB cover of LCD module}

1 is a view showing the back of the conventional liquid crystal display module.

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

3 is a view for explaining a printed circuit board cover of the liquid crystal display module according to the present invention.

4 is a view for explaining a variable resistance adjusting method in a printed circuit board cover of a liquid crystal display module according to the present invention.

Explanation of symbols on the main parts of the drawings

32: printed circuit board cover 34: engraved

36: hole of fine width 38: fine circular hole

40: driver 42: latch

The present invention relates to a liquid crystal display module, and more particularly, to a PCB cover for protecting a printed circuit board (PCB) mounted on a rear surface of a liquid crystal panel.

The liquid crystal display device is one of the image display mechanisms, and has advantages in that the thin and small size and the low power consumption can be realized as compared to another image display mechanism, the CRT (Cathode Ray Tube). In particular, since the thin film transistor liquid crystal display device realizes high quality, large size, and color display screen comparable to the CRT, it is recently used in various fields as well as the notebook PC and monitor market.

Such a liquid crystal display device includes a liquid crystal panel as a display component, a backlight unit as a light source, and a PCB for driving the liquid crystal panel.

Here, the liquid crystal panel is typically bound to the mold frame of the backlight unit by a bezel, and the PCB is disposed by being turned to the back of the backlight unit by a film of a flexible material connected to the liquid crystal panel, whereby the liquid crystal display You will configure the module. The liquid crystal display module configured as described above is assembled with a system case to implement a practical liquid crystal display device such as a notebook PC or a monitor.

In addition, on the PCB attached to the back of the backlight unit, as shown in FIG. 1, a steel PCB cover 12 is covered so that contact with the system case is blocked. Reference numeral 10 denotes a liquid crystal display module.

The reason for covering the PCB cover 10 is that the system case is generally made of magnesium in order to block electromagnetic waves (EMI). When the magnesium system case is directly in contact with the liquid crystal display module, a short (short) This is to prevent this problem because a circuit defect may occur.

On the other hand, the liquid crystal display module undergoes a test process that the screen is displayed correctly without shaking, and in this case, when the common voltage (Vcom) flowing into the liquid crystal panel is set incorrectly and the screen is shaken, the operator adjusts the variable resistor mounted on the PCB. The common voltage applied to the liquid crystal panel is adjusted.

Therefore, in covering the PCB cover 12, conventionally, the hole 14 is provided to expose the variable resistor (not shown) to the PCB cover 12 so that the operator can adjust the variable resistance.

However, as described above, when a hole is provided in the PCB cover for adjusting the variable resistance, as the hole is exposed to the outside for a long time, as shown in FIG. 2, foreign substances or the like penetrate through the hole. This foreign matter causes a short circuit of the circuit, and thus, a failure of the liquid crystal display module occurs eventually.

In FIG. 2, reference numeral 11 denotes a PCB, 12 a PCB cover, 14 a hole, and 20 a variable resistor.

Accordingly, an object of the present invention is to provide a PCB cover of a liquid crystal display module, which is designed to solve the above problems, to prevent the infiltration of foreign matters by changing the shape of the hole.

A liquid crystal panel (PCB) cover of a liquid crystal display module, which is disposed to be rotated to the rear surface of a backlight unit to which a liquid crystal panel is bound, and is installed to cover a PCB equipped with a variable resistor in place. An imprint having a larger area than the resistance is formed, a fine circular hole is formed in the center of the imprint, and a plurality of holes having a fine width are formed to be connected to the fine circular hole at different positions, thereby forming the fine circular hole in the imprint. Provided is a PCB cover of a liquid crystal display module, characterized in that the surface adjacent to the hole is divided into a plurality.

Here, the stamping is preferably made of a circular shape, the fine circular hole and a plurality of holes connected thereto form a "+" or "*" shape.

And, the divided face in the inscription has the flexibility to bend.

(Example)

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

3 is a view for explaining a PCB cover of the liquid crystal display module according to the present invention.

As shown, the PCB cover 32 of the liquid crystal display module according to the present invention, the portion corresponding to the upper portion of the variable resistor (not shown) mounted on the PCB is provided with a large hole so as to expose the variable resistance Otherwise, the portion corresponding to the hole is inscribed 34.

In addition, the inside of the PCB cover portion imprinted 34 has a fine shape hole 36 having a predetermined shape, for example, a cross (+) shape, or a star (*) shape, centering on the fine circular hole 38 in the center. Divided by). At this time, the stamped PCB cover portion divided by the fine width hole 36 has the flexibility to be bent.

Meanwhile, as the PCB cover structure of the upper part of the variable resistor is changed as described above, a driver having a latch is used to adjust the variable resistor. This is to allow the driver to be inserted into the PCB cover portion by using the clasp, and to restore the PCB cover portion back to its original state after adjusting the variable resistor.

In detail, FIG. 4 is a view for explaining a variable resistance adjusting method in a PCB cover of a liquid crystal display module according to the present invention.

First, the driver 40 with the clasp 42 is pushed into the center fine circular hole 38 of the engraved PCB cover portion. In this case, the clasp 42 lowers the circle-marked PCB cover portion divided by the hole of fine width, and eventually when the driver 40 is inserted into the surface groove of the variable resistor 20. It passes through the central microcircular hole 38 and enters inside the PCB cover.

Then, when the driver 40 is lifted up after the adjustment of the variable resistor 20, the latch 42 lifts up the inscribed PCB cover portion which has been lowered, and eventually, the driver including the latch 42. When 40 is completely removed from the PCB cover 32, the PCB cover portion inscribed in a circular shape is restored to its original shape.

Therefore, when changing the hole structure of the PCB cover as in the present invention, and adjusting the variable resistor using a driver having a clasp, provided for the adjustment of the variable resistor while maintaining the adjustment of the variable resistor easily. By providing a hole having a significantly smaller size than that of the conventional one, intrusion of foreign matters into the PCB through the holes can be significantly reduced, and as a result, it is possible to prevent the occurrence of circuit shorts caused by foreign matters. The reliability of the liquid crystal display module can be ensured.

As described above, the present invention replaces the conventional large hole provided for adjusting the variable resistance with only a stamping, and includes a fine circular hole in the inner center thereof, thereby maintaining the ease of adjusting the variable resistance, Foreign matters and the like can significantly reduce penetration compared with the prior art, and as a result, it is possible to prevent the occurrence of circuit shorts and the like, thereby ensuring the reliability of the liquid crystal display module.

Meanwhile, although specific embodiments of the present invention have been described and illustrated, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (4)

It is a PCB cover of a liquid crystal display module which is arranged to cover the PCB mounted with a variable resistor in place, which is disposed by turning to the back of the backlight unit where the liquid crystal panel is bound. An imprint of a larger area than the variable resistor is formed to correspond to the position where the variable resistor of the PCB cover is mounted, a fine circular hole is formed in the center of the imprint, and a plurality of holes having a fine width are located at different positions. The cover of the liquid crystal display module is formed by being connected to the fine circular hole, the surface adjacent to the fine circular hole in the engraving is divided into a plurality. The PCB cover of claim 1, wherein the marking is formed in a circular shape. The PCB cover of the liquid crystal display module according to claim 1, wherein the fine circular hole and the plurality of holes connected to the fine circular hole have a shape of "+" or "*". 2. The PCB cover of a liquid crystal display module according to claim 1, wherein the divided surface in said inscription has a flexibility that can be bent.

Images