JPH086054A - Liquid crystal display module - Google Patents

Abstract

PURPOSE:To reduce the size of peripheral picture frame parts by making the input terminals of a tape carrier package finer. CONSTITUTION:The tape carrier package 3 is provided with the input terminals 9 and a printed circuit board 10 is provided with terminals 11. The input terminals 9 and the terminals 11 are connected by an anisotropic conductive film 12. Both ends of the tape carrier package 3 are provided with notches 13 and the central part of the tape carrier package 3 is provided with a hole 14. The notch 13 parts and the hole 14 part are stuck with adhesives 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display module in which a tape carrier package (TCP) for driving a liquid crystal display panel is provided between a liquid crystal display panel and a printed wiring board (PCB).

[0002]

2. Description of the Related Art FIG. 6 is a schematic view showing a part of a conventional liquid crystal display module, and FIG. 7 is an enlarged AA sectional view of FIG.
As shown in the figure, a liquid crystal display panel 1 is provided with a terminal 2, and an output terminal (not shown) of a tape carrier package 3 for driving the liquid crystal display panel 1 is a terminal 2 by an anisotropic conductive film (ACF). It is connected to the. An input terminal 4 of the tape carrier package 3 is provided with an anti-separation material 5 at its tip, a printed wiring board 6 is provided with a terminal 7, and the input terminal 4 and the terminal 7 are connected by a solder 8 to form a tape carrier package 3 An adhesive 20 such as an epoxy resin is provided between the printed wiring board 6 and the printed wiring board 6.

As a document describing this kind of technique, there is JP-A-5-265023.

[0004]

In such a liquid crystal display module, when the pitch of the input terminals 4 is small, the adjacent input terminals 4 may be short-circuited by the solder 8. Therefore, the input terminals 4 are miniaturized. In addition, since it is necessary to provide the variation preventing material 5 at the tip portion of the input terminal 4, a wide printed wiring board 6 must be used. Therefore, the peripheral portion of the liquid crystal display panel, that is, the peripheral frame portion, must be used. The size increases.

The present invention has been made in order to solve the above-mentioned problems. Even when the pitch of the input terminals is small, the adjacent input terminals are not short-circuited and the size of the peripheral frame portion is reduced. It is an object of the present invention to provide a liquid crystal display module that can be manufactured.

[0006]

To achieve this object, according to the present invention, there is provided a liquid crystal display module in which a tape carrier package for driving the liquid crystal display panel is provided between a liquid crystal display panel and a printed wiring board. The terminals of the printed wiring board and the input terminals provided on the back surface of the tape carrier package are connected by an anisotropic conductive film.

[0007]

In this liquid crystal display module, since the input terminals provided on the back surface of the tape carrier package and the terminals of the printed wiring board are connected by the anisotropic conductive film, even when the pitch of the input terminals is small. The adjacent input terminals are not short-circuited, and the input terminals need not be provided with a dispersion prevention material.

[0008]

2 is a schematic view showing a part of a liquid crystal display module according to the present invention, FIG. 1 is an enlarged BB sectional view of FIG. 2, and FIG. 3 is a CC sectional view of FIG. As shown in the figure, an input terminal 9 is provided on the back surface of the tape carrier package 3, a terminal 11 is provided on the printed wiring board 10, and the input terminal 9 and the terminal 11 are connected by an anisotropic conductive film 12, Notches 13 on both sides of the carrier package 3
Is provided, a hole 14 is provided in the center of the tape carrier package 3, and an adhesive 15 is provided in the notch 13 and the hole 14.
Is provided.

In this liquid crystal display module, since the input terminals 9 and 11 are connected by the anisotropic conductive film 12, the pitch of the input terminals 9 is small (for example,
0.08 mm), the adjacent input terminals 9 are not short-circuited, so that the input terminals 9 can be miniaturized, and it is not necessary to provide a variation prevention material on the input terminals 9, so that the width is narrow. Since the printed wiring board 10 can be used, the size of the peripheral frame portion can be reduced. In addition, the tape carrier package 3 has a notch 13,
Since the holes 14 are provided, the adhesive 15 easily enters between the tape carrier package 3 and the printed wiring board 10.
Since the tape carrier package 3 and the tape carrier package 3 can be reliably bonded to each other, it is possible to effectively prevent the tape carrier package 3 from being peeled from the printed wiring board 10 due to temperature stress.

FIG. 4 is a schematic sectional view showing a part of another liquid crystal display module according to the present invention. As shown in the figure,
Since the input terminal 9 is provided in the hole 14 as well,
As compared with the liquid crystal display module shown in FIG. 3, the number of input terminals 9 can be increased when the dimensions of the tape carrier package 3 are constant.

FIG. 5 is a schematic view showing a part of another liquid crystal display module according to the present invention. As shown in the figure, the terminals (not shown) provided on the purine wiring board 16 and the input terminals 9 are connected by anisotropic conductive films (not shown), and the notches 17 are formed on both sides of the tape carrier package 3. Is provided, and the notch 1 is provided at the center of the tape carrier package 3.
8 is provided, an adhesive 19 is provided in the notches 13 and 18, and the end surface of the tape carrier package 3 on the printed wiring board 16 side (the lower end surface on the paper) and the side of the printed wiring board 16 opposite to the liquid crystal display panel 1 are provided. The end face (the end face on the lower side of the paper) is the same plane.

In this liquid crystal display module, since the printed wiring board 16 having an extremely narrow width can be used, the size of the peripheral frame portion can be remarkably reduced.

As the adhesives 15 and 19, epoxy resin, silicone, UV resin or the like can be used.

[0014]

As described above, in the liquid crystal display module according to the present invention, even when the pitch of the input terminals of the tape carrier package is small, the adjacent input terminals are not short-circuited. Since the printed wiring board having a narrow width can be used because it is not necessary to provide a variation preventing material on the input terminal, the size of the peripheral frame portion can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line BB of FIG.

FIG. 2 is a schematic view showing a part of a liquid crystal display module according to the present invention.

FIG. 3 is a sectional view taken along line CC of FIG.

FIG. 4 is a schematic sectional view showing a part of another liquid crystal display module according to the present invention.

FIG. 5 is a schematic view showing a part of another liquid crystal display module according to the present invention.

FIG. 6 is a schematic view showing a part of a conventional liquid crystal display module.

7 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel 3 ... Tape carrier package 9 ... Input terminal 10 ... Printed wiring board 11 ... Terminal 12 ... Anisotropic conductive film 16 ... Printed wiring board

Claims (1)

[Claims] 1. A liquid crystal display module in which a tape carrier package for driving the liquid crystal display panel is provided between a liquid crystal display panel and a printed wiring board, the terminals being provided on the printed wiring board and the back surface of the tape carrier package. A liquid crystal display module, characterized in that the input terminals are connected by an anisotropic conductive film.