JPH10133219A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent driving TABs from being broken due to the catch of a metallic frame on the TABs at the time of fitting the frame by sticking a film to the rear face of an illumination unit. SOLUTION: A film 5 is stuck to the periphery of the surface of a liquid crystal display module 1 by the adhesive parts 5a of the film 5 and driving TABs 1b arranged around the side faces of the module 1 and circuit substates 1c arranged on the rear face of an illumination unit 2 are covered with the film 5 and the other side adhesive part 5a of the film 5 is stuck to the rear face of the unit 2. Since the TABs 1b are covered with the film 5 at the time of inserting and assembling a metallic frame 3, the TABs 1b are not catched and damaged by the frame 3. Consequently the metallic frame 3 can be applied from the upper part of the module 1 and assembled.

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 for displaying characters and images.

[0002]

2. Description of the Related Art A liquid crystal display device is smaller and lighter than a cathode ray tube, and has a characteristic of low power consumption. Therefore, in recent years, research, development and manufacturing techniques have been rapidly advanced. A wide variety of liquid crystal display devices have been commercialized and spread. In recent years, the outer peripheral portion of the effective display area of the liquid crystal display device has been reduced in size by reducing the size of the housing of OA equipment such as a word processor and a personal computer.

Hereinafter, a conventional liquid crystal display device will be described. FIG. 4 is an exploded perspective view of a conventional liquid crystal display device, and FIG. 5 is a sectional view of the conventional liquid crystal display device. 4 and 5, reference numeral 1a denotes a liquid crystal panel for displaying characters and images, and 1b.
Is a driving TAB for displaying characters and images on the liquid crystal panel 1a, 1c is a circuit board on which the driving TAB 1b is mounted,
Reference numeral 1 denotes a liquid crystal display module in which a driving TAB 1b is joined to a liquid crystal panel 1a and a circuit board 1c is incorporated, 2 is an illumination unit for irradiating the liquid crystal display module 1 with light from the back, and 3 is an illumination unit for the liquid crystal display module 1. The metal frame 4 for attaching the liquid crystal display module 1 to the metal frame 4 is an elastic body interposed therebetween so as not to directly press the periphery of the liquid crystal display module 1 with the metal frame 3.

[0004] The operation of the conventional liquid crystal display device configured as described above will be described below. First, a plurality of driving TABs 1b are provided around the liquid crystal panel 1a to display characters and images on the liquid crystal display module 1.
Are joined. The plurality of drive TABs 1b are mounted on the circuit board 1c. As described above, the liquid crystal display module 1 is such that the driving TAB 1b mounted on the circuit board 1c is joined to the periphery of the liquid crystal panel 1a. The liquid crystal display module 1 is set on the lighting unit 2 and a driving TAB 1b is used to reduce the size of the liquid crystal display device.
At the junction with the liquid crystal panel 1a. Further, the driving TAB 1b is joined to the circuit board 1c at the joining portion.
1b is bent, and the circuit board 1c is mounted on the back surface of the lighting unit 2. An elastic body 4 is arranged around the surface of the liquid crystal display module 1, and the liquid crystal display module 1 is assembled by covering the liquid crystal display module 1 with the metal frame 3 from above the elastic body 4. Here, the elastic body 4 is interposed by the metal frame 3 so as not to directly press around the liquid crystal display module 1.

[0005]

However, in the above conventional configuration, the driving TAB 1b is connected to the liquid crystal panel 1a.
And the circuit board 1c, the drive TAB 1b is disposed on the side surface of the liquid crystal display module 1, and when the metal frame 3 is inserted from above, the side plate of the metal frame 3 is driven by the drive TAB 1b. Therefore, there is a problem that the metal frame 3 must be attached without damaging the driving TAB 1b.

The present invention is to solve the above-mentioned conventional problems, and to provide a liquid crystal display device in which when the metal frame 3 is mounted, the metal frame 3 does not catch on the driving TAB 1b and damage the driving TAB 1b. It is intended for.

[0007]

In order to achieve this object, a liquid crystal display device according to the present invention comprises a liquid crystal panel, a plurality of driving circuits for displaying a liquid crystal panel arranged around the liquid crystal panel, A liquid crystal display module comprising a circuit board on which the driving circuit is mounted; a lighting unit for emitting light from the back of the liquid crystal display module; and a liquid crystal display device comprising a metal frame covering the liquid crystal display module and the lighting unit. A TAB for driving arranged on the side surface of the liquid crystal display module by attaching a film to the back surface of the lighting unit from the peripheral edge of the surface of the liquid crystal display module, and a circuit board arranged on the back surface of the lighting unit. When the metal frame is inserted, the metal frame does not catch on the drive TAB. A.

Therefore, according to the present invention, the driving TAB is replaced by placing the liquid crystal display module on the lighting unit.
Then, the driving TAB is arranged on the side surface of the liquid crystal display module by bending at two places, that is, the joining part of the liquid crystal panel and the joining part of the driving TAB and the circuit board, and attaching the circuit board to the back surface of the lighting unit. Here, one end of the film is attached to the peripheral end of the liquid crystal display module, and the folded drive TAB and the circuit board attached to the back of the lighting unit are covered, and the adhesive portion of the other end of the film is attached to the back of the lighting unit. Paste. In this way, it is possible to prevent the metal frame from being caught on the driving TAB when the metal frame is inserted from above.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a liquid crystal panel, a plurality of driving circuits for displaying a liquid crystal panel disposed around the liquid crystal panel, and the driving circuit. A liquid crystal display module comprising a circuit board having mounted thereon, a lighting unit for emitting light from the back of the liquid crystal display module, and a liquid crystal display device comprising a metal frame covering the liquid crystal display module and the lighting unit, Attach one end of the film to the peripheral edge of the surface of the liquid crystal display module, turn the side of the liquid crystal display module, and drive the TAB disposed on the side of the liquid crystal display module and the circuit board disposed on the back of the lighting unit to the film. Cover, and attach the other end of the film to the back of the lighting unit. Over-time can be prevented from being caught in the drive for TAB.

[0010]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG.

1 and 2 are exploded perspective views of a liquid crystal display device according to an embodiment of the present invention, and FIG. 3 is a sectional view of the liquid crystal display device according to the embodiment of the present invention. 1 to 3,
1a is a liquid crystal panel for displaying characters and images, 1b is a driving TA for displaying characters and images on the liquid crystal panel 1a.
B, 1c is a circuit board on which a driving TAB 1b is mounted, 1 is a liquid crystal display module in which the circuit board 1c is incorporated in a liquid crystal panel 1a, 2 is an illumination unit for irradiating the liquid crystal display module 1 with light from behind, and 3 is a liquid crystal display. Module 1
Metal frame for attaching the
Is a film to be attached from the peripheral edge of the front surface of the liquid crystal display module 1 to the back surface of the lighting unit.

The operation of the liquid crystal display device of this embodiment having the above-described configuration will be described below.

First, a plurality of driving circuits, that is, a driving TAB 1b, for displaying characters and images on the liquid crystal display module 1 are joined around the liquid crystal panel 1a. The plurality of drive TABs 1b are mounted on the circuit board 1c. As described above, the liquid crystal display module 1 has the circuit board 1c on which the driving TAB 1b is mounted around the liquid crystal panel 1a.
Are joined. The liquid crystal display module 1 is placed on the illumination unit 2, and the drive TAB 1b is bent at the joint with the liquid crystal panel 1a to reduce the size of the liquid crystal display device. Further, the driving TAB 1b is bent at the joint between the driving TAB 1b and the circuit board 1c, and the circuit board 1c is attached to the back surface of the lighting unit 2. The liquid crystal display module 1 is adhered to the periphery of the surface of the liquid crystal display module 1 with the adhesive portion 5a of the film 5, and is rotated around the side surface of the liquid crystal display module 1, and the driving T is disposed on the side surface of the liquid crystal display module 1.
AB1b and the circuit board 1c disposed on the back surface of the lighting unit 2 are covered with a film 5, and the other adhesive portion 5a of the film 5 is attached to the back surface of the lighting unit 2. For example, PET is used as a material of the film 5 and a double-sided tape is stuck to the bonding portion 5a. However, the film 5 is not limited to PET as long as it is a flexible thin sheet. From above, the liquid crystal display device is assembled by covering the liquid crystal display module 1 with the metal frame 3. Here, the bonding portion 5 a of the film 5 is configured so that the periphery of the liquid crystal display module 1 is not directly pressed by the metal frame 3.

As described above, according to this embodiment, the driving TAB 1b is covered with the film 5 when the metal frame 3 is inserted and assembled, so that the driving TAB 1b is not caught and damaged by the metal frame 3. Therefore, the metal frame 3 can be inserted from above the liquid crystal display module 1 and assembled without damaging the driving TAB 1b.

[0015]

As described above, according to the present invention, the liquid crystal display module is placed on the lighting unit, the driving TAB is connected to the driving TAB and the liquid crystal panel, and the driving TAB is connected to the circuit board. By mounting the circuit board on the back surface of the lighting unit, the drive TAB disposed on the side surface of the liquid crystal display module can be covered with a film attached to the peripheral edge of the liquid crystal display module and the back surface of the lighting unit. it can. In this way, it is possible to prevent the metal frame from being caught on the drive TAB when the metal frame is inserted from above and assembled.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of a liquid crystal display module and a lighting unit of the liquid crystal display device.

FIG. 3 is an enlarged sectional view of a main part of the liquid crystal display device.

FIG. 4 is an exploded perspective view of a conventional liquid crystal display device.

FIG. 5 is an enlarged sectional view of a main part of a conventional liquid crystal display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display module 1a Liquid crystal panel 1b TAB 1c for driving a circuit board 2 Lighting unit 3 Metal frame 4 Elastic body 5 Film 5a Adhesion part

Claims (1)

[Claims] 1. A pair of transparent substrates on which display electrodes are laid face each other at an appropriate interval, and a liquid crystal material is disposed in a gap between the pair of transparent substrates by sealing a periphery of the transparent substrate with a sealing material. A liquid crystal display module comprising a liquid crystal panel configured as described above, a plurality of driving circuits for displaying a liquid crystal panel disposed around the liquid crystal panel, and a circuit board on which the driving circuit is mounted. A liquid crystal display device comprising: a lighting unit that emits light from the back of the liquid crystal display module; and a metal frame that covers the liquid crystal display module and the lighting unit. A liquid crystal display device, wherein a film is stuck over the back surface of the lighting unit.