KR100696618B1 - Liquid crystal display module structure - Google Patents

Abstract

The present invention relates to a liquid crystal display module structure in which a liquid crystal display module is miniaturized by minimizing an area occupied by wiring leads in a display panel while facilitating pattern design and mounting work of the lead unit.

A display panel having a liquid crystal display area inside the seal line, a pixel electrode lead portion formed at a first end of the display panel by extending one end of the pixel electrode, and one end of a common electrode perpendicular to the pixel electrode extending And a common electrode lead portion formed at a second end portion of the display panel perpendicular to the first end portion, and a body portion facing one end portion of the display panel so as to surround the first and second ends of the display panel. A flexible printed circuit board having an extended extension part, wherein the flexible printed circuit board is connected to the pixel electrode lead part and the common electrode lead part through an outer lead part respectively formed on a main body part and an extension part, Provided is a liquid crystal display module structure characterized by bending a portion to the bottom of a display panel.

LCD, LCD, Lead, Mount, Printed Circuit Board, Pixel Electrode, Common Electrode

Description

Liquid crystal display module structure

1 and 3 are schematic views of a liquid crystal display module according to the present invention.

2 is a schematic view of a liquid crystal display module showing a state in which the extension is folded;

4 is a schematic view of a liquid crystal display module according to the prior art.

5 is an enlarged view of an electrode lead unit in a liquid crystal display module according to the prior art.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device. More particularly, the present invention relates to a display panel by distributing electrode lead portions connected to a flexible printed circuit board (FPCB) to facilitate pattern design and mounting work of the lead portions. The present invention relates to a liquid crystal display module structure in which a liquid crystal display module is miniaturized by minimizing an area occupied by wiring leads.

In general, a liquid crystal display device is a flat panel display device that realizes an image by the electro-optical properties of the liquid crystal by injecting liquid crystal between a pair of electrode plates arranged in parallel, mainly printed through a tape automated bonding (TAB) package The display board may be connected to the circuit board or directly to the printed circuit board.

The liquid crystal display module having such a configuration has been used as a display device of various electronic devices. Recently, a liquid crystal display module for a video phone that transmits a voice and an image of a user is being researched and developed. It is increasing.

4 is a schematic diagram of a liquid crystal display module (hereinafter, referred to as an LCD module) for a video telephone according to the prior art, wherein the LCD module includes a display panel 1, a driving large scale integration (LSI) 3, and the like. Chip is mounted and includes a flexible printed circuit board 5 (hereinafter referred to as 'FPCB') connected to a driving power supply unit (not shown).

The display panel 1 forms a liquid crystal display region 9 into the conductive seal line 7, and forms wiring leads outside the seal line 7 to form respective common electrodes and pixel electrodes as shown in FIG. (5) is connected.

In this case, the LCD module for a videophone implements a common electrode and a pixel electrode on a single FPCB 5 in order to minimize the size of the entire module while realizing a resolution of 128 × 128 or more. ) And the pixel electrode lead 13 are concentrated at one end of the display panel 1 (hereinafter, referred to as a connection end).

In particular, in order to concentrate the electrode lead portion at the connection end of the display panel 1, the pixel electrode lead portion 13 is mainly formed at the center of the connection end portion, and the plurality of common electrodes are divided into two parts to form the conductive seal line 7. Wiring leads are formed on both sides, and a pair of common electrode lead portions 11 are arranged at both ends of the pixel electrode lead portion 13.

However, in such an LCD module, by arranging the lead portions of the electrodes at one connection end portion, as shown in FIG. 5, the maximum pitch of the outer lead 15 and the electrode lead 17 of the FPCB 5 is approximately approximated. Since it cannot be reduced to 50 μm or less, there is a limit in designing a pattern, and the pitch of the conductive base 19 must be minimized, so that a high precision manufacturing process is required, causing a cost increase.

In addition, by forming wiring leads of the common electrode on both sides of the seal line 7 of the display panel 1 by width B, the area occupied by the wiring leads in the entire display panel 1 is enlarged, so that an image is actually realized. ) Has the disadvantage that the width and area are limited.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to distribute the common electrode lead portion and the pixel electrode lead portion while distributing the lead portion with a single FPCB, thereby leading to the lead portion pattern design and mounting work. It is to provide a liquid crystal display module structure that facilitates.

Another object of the present invention is to provide a liquid crystal display module structure in which the display area is enlarged for the same display panel area by minimizing the area occupied by the wiring leads in the display panel, or the liquid crystal display module is miniaturized for the same display area.

In order to achieve the above object, the present invention,

A display panel having a liquid crystal display area inside the seal line;

A pixel electrode lead part extending from one end of the pixel electrode to a first end of the display panel;

A common electrode lead part extending from one end of the common electrode perpendicular to the pixel electrode to be formed at a second end of the display panel perpendicular to the first end;

A flexible printed circuit board having an extension extending vertically with respect to a body portion facing one end of the display panel so as to surround the first and second ends of the display panel;

The flexible printed circuit board is connected to the pixel electrode lead and the common electrode lead through an outer lead formed in the main body and the extension, respectively, and a portion of the extension is bent to the bottom of the display panel. Provide a display module structure.

As described above, the present invention solves the problem of concentration of lead portions by distributing the pixel electrode lead portion and the common electrode lead portion, and extends one end of the pixel electrode and the common electrode to form respective electrode lead portions, thereby providing wiring leads in a display panel. Area can be minimized, and the LCD module can be miniaturized by bending the expansion part of the FPCB to the bottom of the display panel.

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

1 is a schematic diagram of an LCD module according to the present embodiment, in which an LCD module includes a display panel 4 having a liquid crystal display area 2 and a driving LSI 6 for driving the display panel 4. And a flexible printed circuit board (FPCB) 8 in which chips such as the above are mounted.

The display panel 4 has a configuration in which a pair of substrates each including a plurality of pixel electrodes and a common electrode are integrally bonded by a conductive seal line 10, and a liquid crystal is injected and sealed in the seal line 10. Inside the line 10 is the liquid crystal display region 2.

The pixel electrode and the common electrode are connected 1: 1 with the outer lead of the FPCB 8 to receive the driving signal from the driving LSI 6 to drive the liquid crystal pixel by pixel.

To this end, a plurality of pixel electrodes arranged in a vertical direction in the drawing extend at one end thereof to form, for example, a pixel electrode lead part 12 at a lower end (first end) of the display panel 4. One end of the plurality of common electrodes perpendicularly intersecting with each other extends to form the common electrode lead 14 at the left end (second end) of the display panel 4, for example.

As such, the pixel electrode lead part 12 and the common electrode lead part 14 are disposed in the first and second ends of the display panel 4, respectively. The wiring pitch in the electrode lead portion is formed the same as or similar to the electrode wiring pitch in the liquid crystal display region 2.

As a result, the electrode lead portion of the display panel 4 may have a margin in the wiring pitch, thereby facilitating the formation and mounting of the wiring lead, and the wiring lead of the pixel electrode or the common electrode in the direction of the original electrode outside the seal line 10. Since it is not necessary to change the direction perpendicular to the direction, the area occupied by the wiring leads in the display panel 4 can be reduced.

Corresponding to the display panel 4 of the above-described configuration, the FPCB 8 faces the first end or the second end of the display panel 4 to surround the first and second ends of the display panel 4. It consists of a main body 8a and an extension 8b extending in the vertical direction from the main body 8a so as to face the other end of the display panel 4.

The FPCB 8 is a structure in which electronic components such as the driving LSI 6 are mounted on a flexible film carrier. When the portion in which electronic components such as the driving SLI 6 is mounted is called the main body 8a, the main body The section 8a includes an interface 16 for connecting to a drive power supply section (not shown).

In addition, both the main body part 8a and the extension part 8b form respective outer lead parts 18 at ends that face the first and second ends of the display panel 4, and the outer lead part 18 ) Has the same wiring pitch as that of the pixel electrode lead portion 12 and the common electrode lead portion 14.

Thus, when the electrode lead portion of the display panel 4 and the outer lead portion 18 of the FPCB 8 are aligned and bonded together using a conductive base, the signal of the driving LSI 6 is transferred through the outer lead. It is transferred to the pixel electrode and the common electrode.

For example, the FPCB 8 may be disposed such that the main body part 8a faces the pixel electrode lead part 12 and the extension part 8b faces the common electrode lead part 14. Since the film carrier constituting (8) is flexible, the extension portion 8b can be folded based on the dashed line.

Accordingly, the display panel 4 and the FPCB 8 may be mounted, and then the expansion unit 8b may be mounted inside the electronic device while being folded into the bottom of the display panel 4 as shown in FIG. 2. The FPCB 8 can minimize the size of the LCD module by folding the extension 8b even though the area is enlarged by the formation of the extension 8b.

As described above, in the present exemplary embodiment, the pixel electrode lead part 12 and the common electrode lead part 14 are distributed to the first and second ends of the display panel 4, and correspondingly, the pixel electrode lead part 12 and the common electrode lead part 14 are extended to the FPCB 8. A portion 8b is formed to fold the expansion portion 8b into the bottom surface of the display panel 4.

As a result, the LCD module according to the present embodiment has the following advantages.

First, the wiring pitch of the electrode lead portion of the display panel 4 and the outer lead portion 18 of the FPCB 8 is further enlarged to freely design the pattern, and facilitate the mounting of the display panel 4 and the FPCB 8. Let's do it. It also prevents cost increase due to concentration of leads.

Second, the area of the wiring lead in the display panel 4 can be minimized. Thus, comparing FIG. 1 showing the structure according to the present embodiment with FIG. 4 showing the structure according to the prior art, the LCD module according to the present embodiment has a liquid crystal display area 2 having a width A for the same display panel area. On the other hand, the LCD module according to the prior art forms the liquid crystal display region 9 having a width A 'smaller than the width A by the width B occupied by the wiring lead. Therefore, the LCD module according to the present embodiment can form a liquid crystal display area having a larger area.

In addition, as shown in FIG. 3, when the LCD module according to the present embodiment has a liquid crystal display area 2 having the same area as the LCD module according to the prior art, the LCD module according to the present embodiment has the same liquid crystal display area. It can be seen that this is more compact.

Third, even if the expansion part 8b is formed in the FPCB 8, the expansion part 8b can be mounted on the electronic device in a folded state, thereby making the LCD module more compact.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to

As described above, the liquid crystal display module structure according to the present invention can solve the problems caused by the concentration of the electrode leads, and can minimize the area occupied by the wiring leads in the display panel, thereby increasing the area of the liquid crystal display or effectively miniaturizing the LCD module.

Claims (3)

A display panel having a liquid crystal display area inside the seal line; A pixel electrode lead part extending from one end of the pixel electrode to a first end of the display panel; A common electrode lead part extending from one end of the common electrode perpendicular to the pixel electrode to be formed at a second end of the display panel perpendicular to the first end; A flexible printed circuit board having an extension part integral with the main body part and extending perpendicularly to a main body part facing one end of the display panel to surround the first and second ends of the display panel; The flexible printed circuit board is connected to the pixel electrode lead and the common electrode lead through an outer lead formed in the main body and the extension, respectively, and a portion of the extension is bent to the bottom of the display panel. Display module structure. The method of claim 1, And a main body portion of the flexible printed circuit board facing the pixel electrode lead portion, and the extension portion facing the common electrode lead portion. The method of claim 1, A liquid crystal display module structure in which the main body portion is a drive LS is mounted on the flexible film carrier.

Images