JPH05313179A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To provide the thin type liquid crystal display device with small man-hours and low component cost by connecting signals to a driver for liquid crystal driving by bringing it into contact with an injection substrate. CONSTITUTION:This liquid crystal display device consists of a liquid crystal panel 1, drivers (X driver) 2 which drive signal electrodes, a driver (Y driver) 3 which drives scanning electrodes, a substrate (X substrate) 4 which supplies signals to the X drivers 2, a substrate (Y substrate) 5 which supplies a signal to the Y driver 3, and a jumper cable 6 which electrically connects the X substrate 4 and Y substrate 5, and a cable 7 for input. Then signals which are inputted to the cable 7 for input are inputted to the Y substrate 5 and some of them are inputted to the Y driver 3 while the remaining signals are inputted to the X substrate 4 by the jumper cable 6; and those signals are inputted to the X drivers 2, thereby obtaining a unit of the liquid crystal display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a circuit portion of a liquid crystal display device.

[0002]

2. Description of the Related Art With the recent expansion of the market in the information equipment field and the video equipment field, the demand for a thin liquid crystal display device is increasing. As a method of realizing a thin type, a method of directly mounting a driving driver on a transparent substrate, so-called C.I.
O. The method called G (chip on glass) is well known.

As shown in FIG. 8, the method of giving a signal to the driving driver in this method is to connect the connection terminals on the transparent substrate 1 on which the driving drivers 2 and 3 are mounted and the input substrate 4 to the liquid crystal driving driver 2. A method of connecting the connection terminals on the terminals 5 and 5 by soldering via the flexible printed circuit board 12 (hereinafter referred to as FPC) is generally used.

[0004]

However, in the above prior art, for example, if there are three liquid crystal driving drivers,
The soldering work for three pieces is required, and the number of drivers for liquid crystal driving is increasing with the increase in capacity of liquid crystal display devices in recent years, and it is becoming common to use about 20 drivers. Yes, that would require a great deal of work. In addition, one FPC is required for each liquid crystal driving driver, resulting in a huge component cost.

Therefore, the present invention solves such a problem, and an object of the present invention is to realize a liquid crystal display device having the same performance as the conventional one with a low man-hour and a low parts cost.

[0006]

The liquid crystal display device of the present invention is a liquid crystal display device in which a liquid crystal driving driver is mounted on a transparent substrate, and a signal is connected to the liquid crystal driving driver by contact with an injection substrate. It is characterized by being performed.

[0007]

1 is a view showing a unit of a liquid crystal display device according to the present invention. Here, 1 is a liquid crystal panel, 2 is a driver for driving signal electrodes (hereinafter referred to as X driver), 3 is a driver for driving scan electrodes (hereinafter referred to as Y driver), and 4 is for supplying signals to the X driver. Substrate (hereinafter referred to as X substrate), 5 is a substrate that supplies signals to the Y driver (hereinafter referred to as Y substrate), 6 is a jumper cable for electrically connecting the X substrate 4 and the Y substrate 5,
Reference numeral 7 is an input cable.

The signal input to the input cable 7 is input to the Y board 5, a part is input to the Y driver, and the rest is input to the X board 4 by the jumper cable 6, and this signal is input to the X driver. Thus, a unit of the liquid crystal display device can be realized.

A unit having the above configuration (hereinafter, OL-
The liquid crystal display device of the present invention can be realized by covering the two units (referred to as 2 units) with a metal frame and arranging a backlight below the OL-2 unit as needed.

Hereinafter, the present invention will be described in detail based on an embodiment for realizing the OL-2 unit.

[Embodiment 1] FIG. 2 is a view showing a liquid crystal panel used in this embodiment, FIG. 3 is a view showing an X substrate, and FIG. 4 is a sectional view taken along the line AA. This X substrate can be formed into the shape shown in FIG. 4 by making it by injection using an engineering plastic as a base material.

An example of this embodiment will be described using the configuration on the signal electrode side.

As shown in FIG. 2, the liquid crystal panel is provided with an input electrode pattern 8 for supplying a signal to the X driver. On the other hand, as shown in FIG. 3, a copper-plated land 9 for supplying a signal to the X driver is provided on the X substrate. The X substrate has a shape such that when the X substrate is inserted into the liquid crystal panel, the electrode pattern 8 and the land 9 are brought into contact with each other to establish electrical conduction. That is, the shape is such that stress is applied after the X substrate is inserted into the liquid crystal panel. In the present embodiment, when the thickness of the liquid crystal panel is T, the dimension A is set so that A / T = 0.7, so that a stress capable of electrically connecting the X substrate and the liquid crystal panel can be obtained. did it.

With such a configuration, the X driver signal supplied from the signal input cable 7 of FIG. 1 is supplied to the X driver 2.

A description will be omitted because the scanning electrode side may have a similar structure, but this makes it possible to realize an OL-2 unit having the same performance as the conventional one without soldering work and FPC, which is very large. It was possible to reduce the number of man-hours and the number of parts.

[Second Embodiment] Similar to the first embodiment, the configuration on the signal electrode side will be described.

FIG. 5 is a view showing the X substrate used in this embodiment. This X substrate has a shape shown in FIG. 5 and is provided with two grooves 10. Since this X substrate was formed by injection using an engineering plastic as a base material, it could be bent by the groove 10 and an X substrate having the same shape as the X substrate of Example 1 could be realized.

However, as it is, no stress is applied when the X substrate is inserted into the liquid crystal panel. Therefore, only by inserting the X substrate into the liquid crystal panel, electrical conduction between the X substrate and the liquid crystal panel cannot be established. Therefore, the X-board and the liquid crystal panel were electrically connected by inserting a holding metal fitting as shown in FIG. 6 onto the X-board after inserting the X-board into the liquid crystal panel. The metal fittings used here were metal,
This may be anything as long as it can apply stress.

A description will be omitted because the scanning electrode side may have a similar structure, but this makes it possible to realize an OL-2 unit having the same performance as the conventional one without soldering work or FPC, which is very large. It was possible to reduce the number of man-hours and the number of parts.

The embodiment of the OL-2 unit having one substrate on the signal electrode side and one on the scanning electrode side has been described above.
This may be an OL-2 unit having two X substrates and one Y substrate, or an OL-2 unit having two X substrates and two Y substrates.

In the first embodiment, an example of the OL-2 unit in which the X substrate and the Y substrate are separated has been described. This is an OL-unit that uses a substrate in which the X substrate and the Y substrate are integrated.
It may be two units. That is, the present invention can be realized with an L-shaped substrate 11 that doubles as an X substrate and a Y substrate as shown in FIG. 7, or an OL-2 unit that uses a U-shaped substrate (not shown).

[0022]

As described above, according to the liquid crystal display device of the present invention, by using the injection board, the OL-2 unit having the same performance as the conventional one can be soldered.
It can be realized without FPC, which requires a lot of man-hours,
The number of parts has been reduced. That is, it has become possible to provide a thin liquid crystal display device that can be realized with a low man-hour and a low component cost.

[Brief description of drawings]

FIG. 1 is a diagram showing an OL-2 unit according to the present invention.

FIG. 2 is a front view of a liquid crystal panel according to the present invention.

FIG. 3 is a front view of an X substrate according to the first embodiment of the present invention.

FIG. 4 is a sectional view of an X substrate according to the first embodiment of the present invention.

FIG. 5 is a front view of an X substrate according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a retainer fitting according to a second embodiment of the present invention.

FIG. 7 is a diagram showing an OL-2 unit according to another embodiment of the present invention.

FIG. 8 is a diagram showing a conventional OL-2 unit.

[Explanation of symbols]

 1. Liquid crystal panel 2. X driver 3. Y driver 4. X substrate 5. Y substrate 6. Jumper cable 7. Input cable 8. Electrode pattern 9. Land 10. Groove 11. L-shaped substrate 12. FPC

Claims (1)

[Claims] 1. A liquid crystal display device in which a driver for driving liquid crystal is mounted on a transparent substrate, wherein a signal is connected to the driver for driving liquid crystal by contact with an injection substrate.