JPS5828721A - Constitution of terminal of liquid crystal panel - Google Patents

Abstract

PURPOSE:To realize packing of high density, by forming at one time the electrode patterns on a sheets of panel glass and with division into matrix scan electrodes and signal electrodes and at the same time concentrating the scan electrode terminal group for connection of external input and the signal electrode group at a side of the panel glass. CONSTITUTION:For an electrode pattern, signal electrodes 15 and scan electrodes 16 are formed at one time on a panel glass 5, and the scan electrode terminals having a smaller number of pieces than the signal electrode terminals are distributed on extended terminal of the signal electrode terminal. In such a way, the upper and lower panel glasses can be used in common with each other to reduce the cost of the panel. Furthermore the connecting terminals can be distributed at two sides of the panel when a liquid crystal panel is assembled. Thus the circuit blocks can be connected to each other just by sticking two sheets of connection tape 6. This reduces the number of connecting processes down to half compared with a conentional example.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode arrangement configuration for a matrix liquid crystal panel, and its purpose is to provide a panel terminal arrangement for high-density mounting for panel driving.

In recent years, even in display devices using liquid crystals, improvements in manufacturing technology such as liquid crystal layer thickness management, development and improvement of high-duty liquid crystal materials, and development of drive methods such as dual-frequency drive have finally led to the development of large, high-density, high-capacity panels σ. ) Practical application is beginning.

Along with this, the mounting of the drive circuit became more complex, and in particular, how to make the mounting of several drive ICs and panel jump connections cheap and compact was an important point in view of the thinness of LCD panels. C is there.

An example of mounting a conventional large panel will be explained and explained with reference to FIG. 1, focusing on the configuration of panel electrode terminals. This is a 7-line matrix display of 5×7 dots.

The overall configuration is a large FFJ made of 1.2 panel glass.
Solder the 3.4 flexible cable to the terminal section of the liquid crystal panel.・The flexible connection tape '' is then connected to the drive circuit block to complete the panel module.

In this structure, the signal electrodes 1 are formed on the panel glass, and the scan electrodes 2 are formed independently on the panel glass.

This electrical and polar plane layout is shown in FIG. 11.12
The wave # (/VVVVV) is the signal electrode, and the solid line (□) at 13.14 is the scanning electrode.

In this case, since connection terminals are formed on four sides of the panel when viewed from the mounting surface, it is necessary to prepare four pieces of expensive connection tape. Moreover, the connection pitch is 200μ pitch ~
Due to the high density of 400μ pitch, soldering a single piece of connection tape requires a lot of man-hours. Too bad, the connecting tape that extends from the panel in all four directions is cumbersome to handle and becomes a bottleneck for compact design.

Therefore, the present invention provides a panel terminal configuration to eliminate the above-mentioned drawbacks, and realizes high-density mounting on a panel at low cost and compactly.

Examples of the present invention are shown in FIGS. 3, 1 and 4. Place the signal electrode 15 on the panel glass of No. 5 with a one-pole pattern as shown in Figure 3.
, scanning electrodes, and poles 16 are formed simultaneously. In this case, generally a small number of scan planes and pole terminals are arranged on the extension of the signal plane and pole terminal lines. As a result, the upper and lower panel glasses can be shared, reducing the cost of the panel, and at the same time, by making the liquid crystal panel stand up as shown in Figure 4, it is possible to place 1R connection terminals on two sides of the panel. Therefore, to connect to the circuit block, it is only necessary to solder two pieces of connection tape (B), compared to the soldering of four pieces of connection tape in the previous example.
Dog 1] cost reduction can be drawn. Nothing is connected to either side of the panel, making it simple, making it possible to create a compact panel module of 52 units.

In addition, by adopting the terminal configuration of the present invention, it is possible to reduce the cost of connection tape, reduce the number of connection steps by half, and achieve compact packaging. There are also great benefits, such as the ability to share the same glass on the upper and lower panels.

[Brief explanation of drawings]

Figure 1 shows an example of a connection structure that replaces a conventional LCD panel. Figure 2 shows an example of a conventional panel layout. Figure 3 of the chain is an example of the panel layout of the present invention, Figure 4, Figure 1.
1. An example of the connection structure around the liquid crystal panel of the present invention. Applicant Suwa Seikosha Co., Ltd. Agent Patent Attorney Mogami Tsumu 5-2

Claims (1)

[Claims] In a matrix display liquid crystal panel, an electrical contact pattern (upper electrode straddling lower electrode) ff, ma) formed on a single panel glass, a scanning electrode for IJ, a pole and a signal N pole are simultaneously formed, and A terminal configuration for a liquid crystal panel, characterized in that a group of scanning electrode terminals for external input connection and a group of signal electrode terminals are arranged in a concentrated manner on one side of a panel glass on which electrodes have been formed.