JPS61236585A - Liquid crystal display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a liquid crystal display device using a liquid crystal display panel (hereinafter abbreviated as LCD panel), and particularly to a liquid crystal display device composed of a plurality of LCD panels. be.

Conventional technology Display devices using LCD panels are thin and lightweight.

Although it is attracting attention as a low power consumption display, it is difficult to obtain a large LCD panel due to manufacturing technology problems. Therefore, in order to construct a large display,
A so-called multi-panel method, in which multiple LCD panels are bonded together, is often adopted.

Problems to be Solved by the Invention In this method in which multiple panels are pasted together, the connection and extraction of the control signal wiring electrodes that control each individual panel is performed by connecting and taking out the control signal wiring electrodes for each individual LCD spring/I/I as shown in FIG. An electrode lead 4 for connection made of a flexible wiring film 3 or the like that applies an image signal to an electrode terminal 2 formed at the end of the electrode lead 4.
In this method, the electrode lead 4 is pulled out in a direction perpendicular to the surface of the LCD spring/L/1, which makes the configuration of the electrode lead lead-out part including the form of the connection part complicated. This has also made it difficult to manufacture multi-panel displays.

In addition, in the same figure, 6 is the picture element representation part of the LCD panel;
7 is a liquid crystal sealing resin layer, and 7 is a reinforcing transparent substrate when a plurality of LCD panels are bonded together.

The present invention eliminates the complexity of attaching connection electrode leads for control signal wiring of each LCD panel to each LCD panel constituting a multi-panel, and
The purpose is to facilitate the manufacture of displays by directly connecting the control signal wiring electrodes between panels.

Means for Solving the Problems In order to solve the above problems, the present invention provides
Bonding electrodes are formed on the end faces of the CD panels, and the electrodes are used to electrically connect the LCD panels to each other.

Function: With this configuration, it is possible to easily connect the control signal wiring electrodes of the display panel in a multi-panel system constructed by combining a plurality of LCD panels, and also to connect the connection electrode lead of the image signal application wiring at the same location. Since the connections can be omitted, it is also possible to make the die display panel thinner.

Embodiment FIG. 1 is a partially enlarged plan view of the electrode terminal portion of spring I and CD spring/L/1 showing the outline of the present invention, and FIG. 2 is a side view as seen from the A side of FIG. 1. In the figure, 1 is the LCD panel, 2
1 is an electrode terminal, 6 is a pixel display surface of the LCD panel 1, 6 is a liquid crystal sealing resin layer, 8.9 is a control signal wiring pattern in the X row and Y column, respectively, 1o is the substrate glass of the LCD panel 1, 1
1 is the base metal layer of the bonding electrode part, 12 is the electrode bonding material, 1
3 is a sealing glass.

A detailed explanation will be given below with reference to the drawings.

Generally, when a plurality of LCD panels 1 are arranged in a plane to form one screen, operation can be achieved by connecting the control signal wiring lines of adjacent III) springs /l/1 in series.

For example, as shown in Figure 3, nine single LCD panels 1A
In a multi-panel with a configuration in which ~1 piece is arranged on a plane as shown in the figure, the LODz (+/L/1x) control signal electrode terminal 2I located in the center is connected to the adjacent LCD spring/L.
/IB, ID, IF, 1H electrode terminals 2B, 2D,
If electrically connected to 2F and 2H, image control signals can be input to the control signal wiring input electrode terminals 2 to 2H of LCD springs/I/1A to 1H located on the outer periphery.
D spring/l/II can also be operated.

FIG. 1 shows a panel having a structure in which electrode terminals of an LCD panel can be easily connected to each other.

In the figure, on the substrate glass 10 at the end of the electrode terminal 2, which is the end of the control signal wiring pattern 8.9 in the X row and Y column of the LCD panel, there is a semicircle extending in the direction perpendicular to the main surface of the LCD spring lv1. A shaped depression is formed, and a base metal layer 11 is selectively bonded to the electrode terminal 2 on the inner wall surface of the depression by vapor deposition, plating, or the like.

L (electrode terminal 2 of 3D spring/L/1) with the above configuration
Electrode bonding is performed using a solder metal such as solder paste or solder powder, or a conductive adhesive paste (in addition to metal paste, highly conductive carbon paste is also possible) on the base metal layer 11 of the recessed portion connected to the base metal layer 11. As shown in the cross-sectional view of Fig. 4 and Fig. 6, I, CD spring/L/1 person, and 1B filled with material 12 are installed closely so that the positions of two opposing electrode terminals and 2B match. Then, by heat treating the same part,
If the electrode bonding materials 12M and 12B are solder metal, fusion bonding is performed, and if they are conductive adhesive paste,
By curing the adhesive, the stain electrode terminals 2 and 2B are electrically connected, and the control signal wiring fins of the LCD panel 1 and IB can be connected in series.

7 in FIG. 4 is a transparent substrate for reinforcing the LCD panel.

The above explanation has been made using an example of combining two LCD panels, but when a plurality of LCD panels are arranged as shown in FIG. 3 using the LCD panel having the structure of the present invention, Also, the control signal wiring lines in the X row and the Y column can be connected to each other.

In addition, in this example, the shape of the recess filled with the electrode bonding material was semicircular, but the shape is not limited to this, and rectangular formations may be formed such as a V-shaped groove, with the base metal layer on the inner wall surface. Any shape that can be formed and filled with the electrode bonding material may be used.

Effects of the Invention As described above, if a multi-panel is constructed using a plurality of CD panels having the structure of the present invention, connections between the control signal wiring lines for driving the LCD panel can be made at the edges of the LCD panel. Therefore, no space is required for connection, and adjacent LCD panels can be placed closely together. This is to narrow the width of the non-pixel area (the area where no display is possible because there are no picture elements) formed by the connection part of the LCD panel, and it is possible to improve the quality of the display panel.

Furthermore, since there is no need to directly connect and supply image control signal wiring to each LCD panel, the manufacturing process is simplified and the number of connection points is reduced, contributing to improved reliability.

Furthermore, since the structure of the connection part is simple and no separate wiring is required, the overall thickness of the display channel can be reduced, resulting in a lightweight and thin device.

[Brief explanation of drawings]

Fig. 1 is a partially enlarged plan view showing the outline of the structure of a CD panel according to the present invention, Fig. 2 is a side view of the same, and Fig. 3 is a concept of a multi-panel configuration in which a plurality of LCD panels are arranged in a plane. FIG. 4 is an enlarged cross-sectional view showing the form of electrode connection between LCD panels of the present invention, FIG. 6 is a plan view of the same,
FIG. 6 is a sectional view showing an example of a conventional LCD panel. 1... LCD panel, 2... Electrode terminal, 6... Picture element display section, 8... X row control signal wiring pattern, 9... ... Y column control signal wiring pattern, 10 ... Substrate glass, 11 ...
- Base metal layer, 12... Electrode bonding material. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] It is constructed by arranging a plurality of liquid crystal display panels in a plane, and the electrode terminals of the control signal wiring of the liquid crystal display panel are formed on the inner wall surface of a recess formed on the edge perpendicular to the main surface of the liquid crystal display panel. At the same time, the recesses are filled with an electrode bonding material such as solder or conductive adhesive, and the electrode bonding material is used to bond each liquid crystal display panel adjacent to each other at the end surface of the liquid crystal display panel. A liquid crystal display device that connects control signal wiring.