JPH04157494A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To attempt cost down by way of making the size of a device smaller by carrying out electric connection between drive hybrid ICs by connection of the drive hybrid IC and a liquid crystal display panel through an aeolotropic conductive film and wiring on the liquid crystal display panel. CONSTITUTION:A liquid crystal display panel 1 is electrically connected to drive hybrid ICs 11-21 with an aeolotropic conductive film. The drive hybrid ICs 11-14 are mutually electrically connected to each other by connection of the drive hybrid ICs 11-14 and the liquid crystal display panel 1 and wirings 31-33, and power source voltage and a drive signal are applied from an outer circuit by a flexible cable 2. Subsequently, the drive hybrid ICs 15-18 are mutually electrically connected to each other by wirings 34-36, and the drive hybrid ICs 19-21 are done so by wirings 37, 38, and power source voltage and a drive signal are applied from the outer circuit by the flexible cable 2. Consequently, it is possible to reduce the size of a device and to reduce cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display device, and more particularly to an electrical connection method for a liquid crystal display device that displays a large image.

[Conventional technology]

In recent years, liquid crystal display devices that display large images have come into widespread use. In these liquid crystal display devices, a liquid crystal display panel, which is mainly composed of two glass plates with connection terminals on the periphery and a liquid crystal material, and a driving hybrid IC are electrically connected by an anisotropic conductive film or the like. be done. In order to maintain reliability of connection even though the connection length increases as the display image becomes larger, the drive hybrid IC is divided into a plurality of parts and electrically connected to the liquid crystal display panel.

FIG. 3 is a block diagram of a conventional liquid crystal display device.

The liquid crystal display panel 1 is electrically connected to each of the driving hybrid ICs 41 to 51 through an anisotropic conductive film or the like. The driving hybrid ICs 41 to 51 are each connected by a flexible cable 4 by soldering, and the flexible cable 4 is electrically connected to an external circuit, and a power supply voltage and a driving signal are applied to the driving hybrid IC.

[Problem to be solved by the invention]

The above-mentioned conventional liquid crystal display device uses a flexible cable to electrically connect the plurality of drive hybrid ICs, which has disadvantages such as an increase in the size of the device and an increase in cost.

[Means to solve the problem]

The liquid crystal display device of the present invention includes a liquid crystal display panel and a plurality of hybrid TCs, the liquid crystal display panel and a plurality of drive hybrid ICs are electrically connected, and the plurality of drive hybrid ICs are electrically connected to each other on the liquid crystal display panel. It has wiring to connect to.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a first embodiment of the present invention. The liquid crystal display panel is an anisotropic conductor driven by a hybrid ICII film.
- 21 are electrically connected to each other. Drive hybrid I
The CIIs to 14 are electrically connected to the driving hybrid IC 11 through an anisotropic conductive film, and are electrically connected to each other by the connection between the liquid crystal display panel 1 and the wirings 31 to 33 on the liquid crystal display panel 1, and are soldered to the driving hybrid IC 1. A power supply voltage and a drive signal are applied from an external circuit through a flexible cable 2 that is connected at the same time. Further, the driving hybrid ICs 3 to 18 are electrically connected to each other by wirings 34 to 36, and the driving hybrid ICs 19 to 21 are electrically connected to each other by wirings 37 and 38, and a power supply voltage and a driving signal are applied from an external circuit through the flexible cable 2.

FIG. 2 is a block diagram of a second embodiment of the present invention. The liquid crystal display panel 1 is a hybrid ICII driven by an anisotropic conductive film.
21 respectively, and the liquid crystal display panel 1
They are mutually connected by upper wirings 31 to 40. A power supply voltage and a drive signal are applied from an external circuit to the drive hybrid ICs 11 to 21 through the flexible cable 3 connected to the drive hybrid IC 21 by soldering.

〔Effect of the invention〕

As explained above, the present invention provides a drive hybrid IC.
The electrical connection between the drive hybrid IC and the liquid crystal display panel via an anisotropic conductive film and the wiring on the liquid crystal display panel have the effect of reducing the size and cost of the device. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention, FIG. 2 is a block diagram of a second embodiment of the present invention, and FIG. 3 is a block diagram of a conventional liquid crystal display device. 1...Liquid crystal display panel, 2-4...Flexible cable, 11-21.41-51...Drive hybrid IC131-40...Wiring on liquid crystal display panel.

Claims (1)

[Claims] comprising a liquid crystal display panel and a plurality of drive hybrid ICs, the liquid crystal display panel and the plurality of drive hybrid ICs;
What is claimed is: 1. A liquid crystal display device in which a plurality of driving hybrid ICs are electrically connected to each other, the liquid crystal display device having wiring for electrically connecting the plurality of drive hybrid ICs to each other on the liquid crystal display panel.