JPH09281510A - Production of liquid crystal display element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the man-hours for sealing shielding agents and prevent the degradation in cutting quality by the outflow of these shielding agents by arranging injection ports in the corners of respective cells, communicating the adjacent cells by these injection ports, sealing the communicating parts thereof and cutting and parting the cells to individual cells. SOLUTION: The cells a1 corresponding to two pieces of electrode patterns are formed by using sealants a3. At this time, the sealants a3 are formed to a twin-leaf shape, by which the corners of the cells 1a are communicated. The substrate a4 is worked to a rectangular strip shape and the liquid crystal display element of a rectangular shape is maintained in a vacuum state. The glass section on the injection port side is immersed into liquid crystals, by which the liquid crystals are injected. The communicating injection ports a2 of the respective cells a1 are thereafter sealed by the shielding agents. The cells a1 formed to the twin-leaf shape and the injected liquid crystals are isolated by the sealing, by which two pieces of the adjacent liquid crystal display elements are formed. Further, the individual liquid crystal display elements are formed by cutting and dividing the rectangular strip.

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, and more particularly to a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display element in a manufacturing method in which a pair of glass substrates are processed into strips and then injected with a liquid crystal and sealed with a shielding agent is used when a liquid crystal is injected into the cell and the cell is sealed with a shielding agent. When stopping, the following methods were taken.

As shown in FIG. 4, each cell (b1) formed by bonding a pair of substrates (b4) together is formed by a sealant (b3) and is independent of each other. One injection port (b2) for injection was provided near the center of one end of each cell (b1). At the time of injection and sealing, the substrate was processed into a strip as shown in FIG. 5, the strip-shaped liquid crystal display element was kept in a vacuum state, and the cross section of the glass on the inlet side was immersed in the liquid crystal to inject the liquid crystal. Thereafter, the injection agent (b2) of each cell (b1) was spot-sealed with the shield agent.

The position of the injection port (b2) in FIGS. 4 and 5 is provided near the center of one end of each cell (b1). Therefore, in the strip shown in FIG. 6, the number of times the sealing agent is sealed corresponds to the number of cells.

After sealing with the shielding agent, the strip is cut and divided to form individual liquid crystal display elements (FIG. 6).

[0006]

Problems to be Solved by the Invention Each cell (b in FIG.
Due to the characteristics of the process of spot-sealing when sealing 1), there is a problem that the smaller the size of the liquid crystal display element, the greater the number of times that sealing is performed, and the takt time required for product processing increases. there were.

Further, when the cell (b1) is cut, since the injection port (b2) is provided in the vicinity of the center of the end side of the cell, in a small liquid crystal display element, the applied shield agent is May flow to near the cutting position. Due to this slight contraction of the shielding agent that has flowed out, stress is exerted on the upper and lower substrate glasses at the cutting position, and the surface of the liquid crystal display element is cut at a significantly oblique angle, or the corner portion of the liquid crystal display element is crushed. However, there was a problem that the cutting quality was remarkably deteriorated.

[0008] Therefore, an object of the present invention is to provide a manufacturing method in which the man-hours for sealing the shield agent are reduced and the cutting quality is prevented from being deteriorated due to the outflow of the shield agent.

[0009]

[Means for Solving the Problems] In a method of manufacturing a liquid crystal display element in which a large number of strips are processed when sealing a liquid crystal injection shield agent, an injection port is arranged at a corner of each cell and two injection holes are formed. A liquid crystal display element, which has a shape in which adjacent cells are communicated with each other by an injection port, and seals a communication part of two adjacent cells and cuts and divides into individual cells to form a liquid crystal display element. Manufacturing method.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings.

[0011]

【Example】

Example 1 As shown in FIG. 1, a sealant (a3) was used,
A cell (a1) corresponding to the two electrode patterns is formed. At this time, the corners of the cells are communicated with each other by providing the sealant in a double leaf shape (a2).

This substrate (a4) is processed into a strip as shown in FIG.
The liquid crystal is injected by keeping the strip-shaped liquid crystal display element in a vacuum state and immersing the glass cross section on the injection port side in the liquid crystal. Then, the communication inlet (a2) of each cell is sealed with a shield agent (FIG. 3a5). Due to this sealing, the cells and the injected liquid crystals formed in the shape of the leaves are isolated. That is, two liquid crystal display elements that are in contact with each other are formed here.

Further, the strip is cut and divided to form individual liquid crystal display elements (FIG. 3).

When a liquid crystal display device was manufactured based on the above-mentioned manufacturing method, the number of injection ports was halved as compared with the conventional manufacturing method. Therefore, the number of man-hours for sealing and cutting off the shield material protruding portion attached thereto was halved.

[Embodiment 2] When a strip prepared in the same manner as in Embodiment 1 was cut, the upper and lower substrate glasses of the communicating portion (a2) were reliably and stably solidified by the shield material (a5). It was confirmed that the liquid crystal display device was cut at a right angle to the surface.

[0016]

According to the invention described in claim 1, since the injection port is halved, there is an effect that the sealing processing time is shortened. For example, a process which cannot be automated in pressure sealing. Then, the processing is simple and the cost can be reduced. Further, since the upper and lower substrate glasses of the cut portion are stably hardened by the shielding agent, the cutting quality of the liquid crystal display element can be improved (yield is improved), and a method for manufacturing the liquid crystal display element which is preferable in cost reduction is provided. Has the effect of being.

[Brief description of drawings]

FIG. 1 is an upper view showing a liquid crystal display element substrate according to a first embodiment of the present invention and a cross-sectional view taken along line AA ′.

FIG. 2 is an upper view showing a strip of a liquid crystal display element of Example 1 of the present invention and a cross-sectional view taken along line AA ′.

FIG. 3 is an upper view showing a liquid crystal display element of Example 1 of the present invention and a cross-sectional view taken along the line AA ′.

FIG. 4 is an upper view showing a liquid crystal display element substrate of a conventional example (prior art) and a cross-sectional view taken along line BB ′.

FIG. 5 is an upper view showing a liquid crystal display device strip of a conventional example (prior art) and a cross-sectional view taken along line BB ′.

FIG. 6 is an upper view showing a liquid crystal display element of a conventional example (prior art) and a cross-sectional view taken along line BB ′.

[Explanation of symbols]

 a1. Cell a2. Liquid crystal inlet a3. Sealing material a4. Substrate a5. Shield material b1. Cell b2. Liquid crystal inlet b3. Seal material b4. Substrate b5. Shield material

Claims (2)

[Claims] 1. A method of manufacturing a liquid crystal display element, which comprises stripping a plurality of strips by sealing a shielding agent after injecting the liquid crystal,
The inlet is located at the corner of each cell and
A liquid crystal display characterized in that a plurality of adjacent cells are communicated with each other by an injection port, and a communication portion of two adjacent cells is sealed and cut into individual cells to form a liquid crystal display element. Device manufacturing method. 2. A method of manufacturing a liquid crystal display device according to claim 1, wherein the liquid crystal is injected from any one of the sides of the liquid crystal display device regardless of various liquid crystal display devices such as TN, STN, TFT and MIM. .