JPH09311319A - Fixing device for substrate and liquid crystal display device provided the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the fixing device of a substrate capable of fixing the substrate in a supporting part and a liquid crystal display device in which a liquid crystal panel is fixed to a plastic frame and it does not move in a liquid crystal display device. SOLUTION: A surface supporting the corner part of a substrate (liquid crystal panel) 1 and a movable body 4 having the tapered plane formed at a side opposite to supporting part are provided at remaining corners where the projected part is not provided of a supporting member (plastic frame) 2 and the substrate (liquid crystal panel) 1 is fixed to the supporting member (plastic frame 2) by being pressed against the projected part while pressing the tapered plane by using a pusher 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a substrate such as a liquid crystal panel mounted in a liquid crystal display device.

[0002]

2. Description of the Related Art FIGS. 4 and 5 are a perspective view and a plan view showing a conventional mounting structure for mounting a liquid crystal panel on a liquid crystal display device. 4 and 5, 1 is a liquid crystal panel,
2 is a plastic frame for holding the liquid crystal panel 1, 7
Is a front frame, 8 is a TCP (Tape-Carrier Package) connected to the liquid crystal panel 1, 9 is a convex portion provided at four corners of the plastic frame 2 for fitting the liquid crystal panel 1, and 10 is a plastic frame 2. A backlight unit including a lamp and a light guide, 11
Is a printed circuit board. The liquid crystal panel 1 is fitted and mounted in the convex portions 9 formed at the four corners of the plastic frame 2.

[0003]

Since the liquid crystal panel is mounted on the conventional liquid crystal display device as described above, the outer dimensional tolerance of the liquid crystal panel 1 and the convex portion 9 provided on the plastic frame 2 are eliminated. Since the convex portion 9 of the plastic frame 2 is attached in consideration of the positional tolerance, a gap is generated between the liquid crystal panel 1 and the convex portion 9, and when vibration or impact is applied to the liquid crystal display device, the liquid crystal panel 1 However, since it moves in the liquid crystal display device, there is a problem such as disconnection of the connection portion between the liquid crystal panel 1 and the TCP 8.

The present invention has been made in order to solve the above problems, and a substrate fixing device capable of easily fixing a substrate to a holding portion, and a liquid crystal panel can be fixed to a plastic frame, so that vibrations and shocks can be achieved. It is an object of the present invention to provide a liquid crystal display device that does not cause defects.

[0005]

SUMMARY OF THE INVENTION A substrate fixing device according to the present invention is a holding member having a holding surface for holding a substrate and a convex portion to which a part of a side surface of the substrate is abutted, and a holding surface of the holding member. And a pusher that is fixed to the holding member by sliding the movable body along the holding surface of the holding member and pressing the substrate against the convex portion of the holding member. It is a thing. Further, the substrate has a quadrangular shape, and three corners thereof are abutted with the convex portions of the holding member, and the remaining one corner is abutted with the movable body. In addition, the movable body is formed on the surface that holds the corner of the substrate and on the opposite side of this surface,
It has a surface with which the pusher engages. In addition, the liquid crystal display device includes a liquid crystal panel sandwiching a liquid crystal material between two opposing glass substrates, and a rectangular liquid crystal panel,
A frame having a holding surface for holding the liquid crystal panel and a convex portion where the three corners of the liquid crystal panel are abutted, and arranged on the frame,
The liquid crystal panel is provided with a movable body that is abutted at the remaining corner and a pusher that slides the movable body along the holding surface of the frame and presses the liquid crystal panel against the convex portion of the frame to fix the liquid crystal panel. The pusher is a general-purpose screw screwed to the holding member. The pusher is a convex portion provided on the front frame attached to the frame so as to cover the edge of the liquid crystal panel.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. A substrate (liquid crystal panel in this embodiment) fixing device according to an embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are a perspective view and a sectional view showing a fixed portion of a liquid crystal panel of the present invention. In the figure, 1 is a substrate (liquid crystal panel), 2 is a holding member (plastic frame) that holds the liquid crystal panel 1, 3 is a convex portion provided at three corners of the plastic frame 2, and 4 is a holding surface of the plastic frame 2. Is a movable body configured to be slidable, and is installed at the remaining four corners of the plastic frame 2 where the convex portions 3 are not provided, and the surface holding the corner of the liquid crystal panel 1 and the opposite side. It has a tapered surface. 5 is a leaf spring for supporting the movable body 4, 6 is a pusher engaged with the tapered surface of the movable body 4, and here, a general-purpose screw having a cross groove on the head is used, and a screw formed on the plastic frame 2 It is configured to be screwed into the hole. Next, fixing of the liquid crystal panel 1 according to the present embodiment will be described. When the liquid crystal panel 1 is mounted on the plastic frame 2, first, the liquid crystal panel 1 is fitted in accordance with the convex portions 3 provided at the three corners of the plastic frame 2, and then the pusher 6 is screwed onto the plastic frame 2 to move the liquid crystal panel 1. The tapered surface of the body 4 receives a horizontal force with respect to the plastic frame 2 and the liquid crystal panel 1
Is pressed against the convex portion 3, and as a result, the liquid crystal panel 1 is fixed to the plastic frame 2.

According to the present invention, since the substrate can be fixed to the holding portion, the liquid crystal panel 1 is fixed to the plastic frame 2, and the liquid crystal panel 1 is fixed even when vibration or shock is applied to the liquid crystal display device. The liquid crystal panel 1 does not move in the liquid crystal display device, and it is possible to prevent damage to the liquid crystal panel 1 and disconnection of the connection portion with the drive unit.

Embodiment 2 In the first embodiment, a general-purpose screw is used for the pusher 6, but as shown in FIG. 3, it corresponds to the taper portion of the movable body 4 of the front frame 7 which is attached to the plastic frame 2 so as to cover the edge of the liquid crystal panel 1. The liquid crystal panel 1 is fixed to the plastic frame 2 by providing the convex portion 6a at a position where the liquid crystal panel 1 is covered with the front frame 7 and pressing the tapered surface of the movable body 4 by the convex portion 6a. Even in this case, the same effect as in the first embodiment can be obtained.

[0009]

As described above, according to the present invention, the substrate can be easily fixed to the holding portion. Also, since the liquid crystal panel can be fixed to the plastic frame, movement of the liquid crystal panel within the liquid crystal display device due to vibration or shock does not occur, preventing damage to the liquid crystal panel, disconnection of the connection part with the drive part, etc., A highly reliable liquid crystal display device can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a substrate fixing device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a substrate fixing device according to Embodiment 1 of the present invention.

FIG. 3 is a sectional view showing a liquid crystal panel fixing portion of a liquid crystal display device according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a mounting structure of a liquid crystal panel of a conventional liquid crystal display device.

FIG. 5 is a plan view showing a mounting structure of a liquid crystal panel of a conventional liquid crystal display device.

[Explanation of symbols]

1 substrate (liquid crystal panel), 2 holding member (plastic frame), 3 convex part, 4 movable body, 5 leaf spring, 6
Pusher, 6a Convex part, 7 Front frame, 8
TCP, 9 convex parts, 10 backlight unit, 11
Printed board.

Claims (6)

[Claims] 1. A holding member having a holding surface for holding a substrate and a convex portion with which a part of a side surface of the substrate abuts, a movable body disposed on the holding surface of the holding member, and one surface of which abuts on the substrate. Fixing the substrate by sliding the movable body along the holding surface of the holding member and pressing the substrate against the convex portion of the holding member to fix the substrate to the holding member. apparatus. 2. The apparatus for fixing a substrate according to claim 1, wherein the substrate has a quadrangular shape, and three corners thereof are abutted with the convex portions of the holding member and the remaining one corner is abutted with the movable body. 3. The movable body has a surface for holding a corner of the substrate,
3. The substrate fixing device according to claim 2, further comprising a surface formed on the opposite side of the surface and engaged with the pusher. 4. A liquid crystal panel formed in a rectangular shape by sandwiching a liquid crystal material between two glass substrates facing each other, and having a holding surface for holding the liquid crystal panel and projections at which three corners of the liquid crystal panel abut. A frame, a movable body disposed in the frame and abutting against the remaining corner of the liquid crystal panel, and sliding the movable body along a holding surface of the frame to press the liquid crystal panel against the convex portion of the frame. A liquid crystal display device comprising a pusher that is fixed by the. 5. The substrate fixing device according to claim 1, or the liquid crystal display device according to claim 4, wherein the pusher is a general-purpose screw screwed to a holding member. 6. The liquid crystal display device according to claim 4, wherein the pusher is a convex portion provided on a front frame attached to the frame so as to cover an edge portion of the liquid crystal panel.