JP2000058998A - Tcp and liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To distribute an external stress acting on a mounting part by enlarging a thermocompression mounting part and thermocompression mounting a TCP onto a liquid crystal panel through an anisotropic conductive member thereby enlarging the thermocompression area of the TCP and the liquid crystal panel. SOLUTION: When a TCP(tape carrier package) 3 is mounted on a liquid crystal panel 2, it is mounted on electrodes (not shown) formed on the board 5 out of facing boards 5, 6 of the liquid crystal panel 2 through anisotropic conductive adhesive. The thermocompression mounting part 4 of the TCP 3 bonded with an IC chip 7 is formed in T-shape having opposite sides 4a, 4b stretching outward wherein the mounting part 4 is hermocompressed to the board 5 through anisotropic conductive adhesive while connecting the electrodes of the TCP 3 and the board 5. Since the thermocompression mounting part is enlarged into T-shape, connection strength of the TCP 3 is enhanced and display capacity of the liquid crystal panel can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a TCP (tape carrier package) and a liquid crystal display device on which the TCP is mounted.

[0002]

2. Description of the Related Art In recent years, portable telephones and portable information devices have rapidly spread. Liquid crystal display devices have been widely used as display devices. Therefore, for the liquid crystal display device,
Low cost and light weight are required, and the form of directly mounting TCP on a liquid crystal display panel using an anisotropic conductive adhesive has become mainstream.

FIG. 2 shows a configuration of a conventional liquid crystal display device 11. That is, the TCP 13 is thermo-compression mounted on the substrate 15 of the liquid crystal display panel 12 via an anisotropic conductive adhesive, and the TCP 13 and the electrodes (not shown) of the substrate 15 are mounted.
It is configured to connect each other. 17 is TC
This is an IC chip bonded to P13.

[0004]

However, as the size of the liquid crystal display panel 12 is reduced, the display capacity is increased, and the definition is increased, the mountable range 16 of the TCP 13 on the liquid crystal display panel 12 is reduced. When external stress is concentrated, T
There was a problem that the connection strength of CP13 became weak.

[0005] The TCP and the liquid crystal display device of the present invention have a TC
It is intended to improve the connection strength of P.

[0006]

The TCP according to the present invention has a wide thermocompression mounting portion, and the liquid crystal display device uses a TCP having the wide thermocompression mounting portion as a liquid crystal with an anisotropic conductive member. It is mounted by thermocompression bonding on a display panel. According to the TCP and the liquid crystal display device of the present invention, since the thermocompression bonding portion of the TCP is widened, the thermocompression bonding area between the TCP and the liquid crystal display panel is widened, and external stress acting on the mounting portion can be dispersed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. FIG. 1 shows that the liquid crystal display panel 2 has a TCP 3
1 is a schematic view of a liquid crystal display device 1 on which is mounted. 5,6
Denotes a counter substrate of the liquid crystal display panel 2, and a TCP 3 is mounted on an electrode (not shown) formed on one of the substrates 5 via an anisotropic conductive adhesive. Thermal compression bonding part 4 of TCP3
Has a T-shape with both sides 4a, 4b projecting outward. In the TCP 3, the thermo-compression mounting portion 4 is thermo-compressed to the substrate 5 using an anisotropic conductive adhesive, and the TCP 3 and the electrodes (not shown) of the substrate 5 are connected. 7 is TCP3
This is an IC chip bonded to.

According to the TCP and the liquid crystal display device thus configured, the thermocompression mounting portion 4 of the TCP 3 has a T-shaped width, so that the thermocompression bonding area between the TCP 3 and the liquid crystal display panel 2 is increased, and Can disperse the acting external stresses,
The connection strength of TCP3 can be improved. Therefore, the connection strength of the TCP 3 can be sufficiently ensured while reducing the size of the liquid crystal display panel 2, increasing the display capacity, and increasing the definition.

The shape of the thermocompression mounting portion 4 of the TCP 3 is not limited to a T-shape, but may be, for example, a shape in which only one side protrudes outward. Not limited. Alternatively, thermocompression bonding may be performed using an anisotropic conductive tape instead of the anisotropic conductive adhesive.

[0010]

According to the TCP and the liquid crystal display device of the present invention, the TCP thermo-compression mounting portion is widened, so that the TCP
The thermal compression bonding area of the liquid crystal display panel is widened, external stress acting on the mounting portion can be dispersed, and the connection strength of TCP can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a liquid crystal display device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a conventional liquid crystal display device.

[Explanation of symbols]

 Reference Signs List 1 liquid crystal display device 2 liquid crystal display panel 3 TCP 4 thermocompression mounting part

Claims (2)

[Claims] 1. A TCP characterized in that a thermocompression mounting portion is widened. 2. A liquid crystal display device comprising the thermocompression-bonded mounting portion of TCP according to claim 1 mounted on a liquid crystal display panel by an anisotropic conductive member.