JPH117038A - Liquid crystal display device and production therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a device and to make the device low cost by planting conductor pins in a flexible insulator and connecting conductive wirings provided in the insulator to the conductive bodies of insulating substrates between which liquid crystal is sealed and also connecting conductive pins to electrodes of a back light provided on a surface opposite to the conductive body formation surface of the insulating substrates. SOLUTION: In a liquid crystal cell 1, liquid crystal is sealed in between insulating substrates 2, 3 made of rectangular glasses and polarizing plates 4, 5 are respectively stuck on the insulating substrates 2, 3. Moreover, plural conductive bodies are formed on opposed surfaces of the substrates 2, 3. Then, plural conductive wirings are formed on a flexible insulator for draw out 9 and conductor pins 10 and the electrode part of a back light 8 are connected by connecting a projecting connection part 9a to the conductive body of the insulating substrate 3, by bending the insulator 9 along the side edge 8a of the back light 8 provided on the surface opposite to the conducting body formation surface of the substrate 3, by overlapping the leading part of the insulator on the rear of the back light 8 and by inserting the conductor pins 10 planted in the insulator 9 into holes 8b of the back light 8.

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 device used as a display in electric equipment, automobiles, and the like, and a method of manufacturing the liquid crystal display device.

[0002]

2. Description of the Related Art A conventional liquid crystal display device of this type is:
As shown in FIGS. 5 to 7, the liquid crystal cell 30 has liquid crystal (not shown) sealed between two insulating substrates 31 and 32 made of rectangular glass. , 3
2 is configured such that polarizing plates 33 and 34 are respectively adhered thereto. In addition, a plurality of conductors 3 are provided on the facing surfaces of the insulating substrates 31 and 32, respectively.
5 are formed (only the insulating substrate 32 side is shown in the drawing). The conductor 35 provided on the insulating substrate 32
Is connected to an IC chip 36.

A backlight 37 made of electroluminescence has a pair of conductive pins 38 connected and connected to its electrodes (not shown). The backlight 37 is provided with a polarizing plate located below. 34 are superimposed and affixed. When the backlight 37 is attached, as shown in FIGS. 5 and 7, the side portion 37a to which the conductor pin 38 is attached projects laterally from the side edge 32a of the insulating substrate 32. The tip of the conductor pin 38 projects downward. The side portion 37a is provided to allow the implanted conductor pin 38 to escape from the insulating substrate 32.

Further, a flexible lead-out insulator 39 is provided.
A plurality of conductive wires (not shown) are formed into an L-shape, and have a connection portion 39a connected to the conductor 35 and a conductive pin 38 connected to the conductor pin 38 of the backlight 37 and having a hole 39b. A portion 39c and a drawer portion 39d for leading out to the outside are provided. And this insulator 39
The connecting portion 39a is connected to the conductor 35 of the insulating substrate 32, bent along the side edge of the backlight 37, and the lead portion 39d and the conductive portion 39c are overlapped on the back surface of the backlight 37, and the hole 39b of the insulator 39 is formed. The conductive pin 38 is inserted through the conductive pin 38, and the conductive pin 38 and the conductive wiring of the conductive portion 39c are connected by soldering. Then, the backlight 37 and the conductor 35 are led out to the outside by the lead portion 39d.

[0005] In a conventional method of manufacturing a liquid crystal display device, as shown in FIG. 8, after forming a liquid crystal cell 30, a backlight 37 is attached to the back surface of an insulating substrate 32, and then an insulator 39 is formed. Is connected to the conductor 35 of the insulating substrate 32. Next, the liquid crystal display device is manufactured by bending the insulator 35, hooking the hole 39b of the conductive portion 39c with the conductive pin 38, and then soldering the conductive pin 38 and the conductive wiring of the conductive portion 39c. Is done.

[0006]

In a conventional liquid crystal display device, a conductor pin 38 is implanted in a backlight 37, and a side portion 37a of the backlight 37 is connected to a side edge 32a of the insulating substrate 32.
Therefore, there is a problem that the size of the device becomes large and the cost increases. Further, with the above configuration, the size of the insulator 39 is increased, and the cost is further increased, particularly because of the expensive and flexible insulator. Further, in the conventional manufacturing method, after the backlight 37 having the conductor pins 38 implanted is attached to the back surface of the liquid crystal cell 30, the holes 39 b of the insulator 39 are bent in a state where the insulator 39 is bent. In this method, the latch is easily released due to the spring back of the insulator 39, and there is a problem in that the labor is reduced in work productivity, and the cost is increased.

[0007]

As a first means for solving the above-mentioned problems, two insulating substrates made of glass or the like and having liquid crystal sealed therebetween are opposed to each other. On the surface, a conductor formed on at least one of the insulating substrates, a backlight disposed on a surface opposite to the conductor forming surface of the one insulating substrate, and a conductive pin implanted therein, having a conductive wiring With a flexible insulator,
The conductive wiring provided on the insulator is connected to the conductor on the insulating substrate, and the conductive pin is connected to the electrode of the backlight. Further, as a second solution, the edge of the insulating substrate on which the conductor is formed and the edge of the backlight are substantially flush with each other, and the insulator is bent at the substantially one face, A conductive wiring provided on an insulator was connected to the conductor, and the conductor pins were connected to electrodes of the backlight. Furthermore, the third
As a solution to the problem, a liquid crystal is sealed between two insulating substrates to form a liquid crystal cell, and a conductor formed on the one insulating substrate on a surface facing the two insulating substrates is provided with a flexible insulating material. After connecting the conductive wiring provided on the body and connecting the electrodes of the backlight to the conductive pins implanted in the insulator, the backlight is placed on the surface of the one insulating substrate opposite to the surface on which the conductor is formed. The manufacturing method was to adhere.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal display device of the present invention and a method of manufacturing the liquid crystal display device will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the liquid crystal display device of the present invention, and FIG. FIG. 3 is a partial side view showing a cross section of a part of the liquid crystal display device of the present invention, and FIG. 4 is an explanatory view for explaining a method of manufacturing the liquid crystal display device of the present invention. is there.
In the liquid crystal display device according to the present invention, as shown in FIGS. 1 to 4, a liquid crystal cell 1 has a liquid crystal (not shown) between two insulating substrates 2 and 3 made of rectangular glass. And the polarizing plates 4 and 5 are adhered on the insulating substrates 2 and 3, respectively. In addition, the opposite surfaces of the insulating substrates 2 and 3
Are formed with a plurality of conductors 6 (only the insulating substrate 3 side is shown in the drawing). Further, an IC chip 7 mounted on the insulating substrate 3 is connected to the conductor 6 provided on the insulating substrate 3.

The backlight 8 made of electroluminescence has an electrode portion (not shown) of a hole 8b. The backlight 8 is a polarized light of the insulating substrate 3 located below the back surface of the liquid crystal cell 1. It is superimposed on the plate 5 and attached. The entire outer shape of the backlight 8 is formed substantially equal to that of the insulating substrate 3, and when the backlight 8 is mounted, as shown in FIG.
The side edge 8 a provided with “b” is flush with the side edge 3 a of the insulating substrate 3.

Also, a flexible lead-out insulator 9 is provided.
Is formed with a plurality of conductive wirings (not shown), and has a convex connection portion 9a connected to the conductor 6;
And a lead portion 9b for leading out to the outside. The insulator 9 connects the connecting portion 9 a to the conductor 6 of the insulating substrate 3 and forms the side edge 8 of the backlight 8.
a, the lead portion 9b is overlapped on the back surface of the backlight 8, and the conductor pin 10 implanted in the insulator 9 is inserted into the hole 8b of the backlight 8, so that the conductor pin 1
0 and the electrode portion of the backlight 8 are connected by soldering. Then, the backlight 8 and the conductor 6 are led out to the outside by the lead-out portion 9b.

In the method of manufacturing a liquid crystal display device according to the present invention, as shown in FIG. 4, after the liquid crystal cell 1 is formed, the conductive wiring of the connecting portion 9a of the insulator 9 in which the conductor pins 10 are implanted is formed. It is connected to the conductor 6 on the insulating substrate 3. Next, the conductor pin 10 is inserted into the hole 8b of the backlight 8 and the conductor pin 10
And the electrode portion of the backlight 8 are soldered. Next, the insulator 9 is bent along the side edge 3a of the insulating substrate 3, the backlight 8 is superimposed on the liquid crystal cell 1, that is, the back surface of the insulating substrate 3, and the backlight 8 is attached.
A liquid crystal display device is manufactured.

[0012]

According to the liquid crystal display device of the present invention, since the conductive pins 10 are implanted in the insulator 9, the backlight 8 can be made smaller than before, and a compact and inexpensive device can be provided. In addition, the side edge 3a of the insulating substrate 3 and the side edge 8a of the backlight 8 can be made substantially flush with each other, so that the flexible insulator 9 can be made smaller and a more inexpensive device can be provided. Furthermore,
Since the backlight 8 is connected to the conductor pins 10 implanted in the insulator 9 and then the backlight 8 is attached to the back of the liquid crystal cell 1, there is no springback of the insulator 9 and the productivity is reduced. And an inexpensive device can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a liquid crystal display device of the present invention.

FIG. 2 is a rear view of the liquid crystal display device of the present invention.

FIG. 3 is a partial side view in which a part of the liquid crystal display device of the present invention is sectioned.

FIG. 4 is an explanatory view illustrating a method for manufacturing a liquid crystal display device of the present invention.

FIG. 5 is a plan view of a conventional liquid crystal display device.

FIG. 6 is a rear view of a conventional liquid crystal display device.

FIG. 7 is a partial side view of a part of a conventional liquid crystal display device.

FIG. 8 is an explanatory diagram for explaining a method for manufacturing a conventional liquid crystal display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal cell 2, 3 Insulating substrate 3a Side edge 4, 5 Polarizer 6 Conductor 7 IC chip 8 Backlight 8a Side edge 8b Hole 9 Insulator 9a Connecting part 9b Lead-out part 10 Conductor pin

Continuation of front page (72) Inventor Taizo Nakagawa 1-7 Yukitani Otsukacho, Ota-ku, Tokyo Alps Electric Co., Ltd.

Claims (3)

[Claims] 1. An insulating substrate made of glass or the like, in which liquid crystal is sealed, and a conductor formed on at least one of the insulating substrates on opposite surfaces of the two insulating substrates; A backlight disposed on the surface opposite to the conductor forming surface of one of the insulating substrates, a conductive pin is implanted, and a flexible insulator having a conductive wire is provided.The conductive wire provided on the insulator is A liquid crystal display device, wherein the liquid crystal display device is connected to a conductor of the insulating substrate and the conductive pin is connected to an electrode of the backlight. 2. An edge of the insulating substrate on which the conductor is formed and an edge of the backlight are substantially flush with each other, and the insulator is bent at substantially one side to provide the insulator. 2. A liquid crystal display device according to claim 1, wherein said conductive wiring is connected to said conductor, and said conductive pin is connected to an electrode of said backlight. 3. A liquid crystal cell is formed by enclosing liquid crystal between two insulating substrates, and a flexible insulating material is provided on the conductor formed on the one insulating substrate on the opposing surfaces of the two insulating substrates. After connecting the conductive wiring provided on the body and connecting the electrodes of the backlight to the conductor pins implanted in the insulator, the backlight is placed on the surface of the one insulating substrate opposite to the surface on which the conductor is formed. A method for manufacturing a liquid crystal display device, wherein the method is attached.