JPH0666013B2 - Method for manufacturing electro-optical display cell - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a plurality of electro-optical display cells at one time.

[Prior art]

Electro-optical display devices are used as display devices for electronic devices. Among the electro-optical display devices, in particular, a liquid crystal display cell is a device in which liquid crystal is enclosed in a cell container formed by adhesively polymerizing two electrode substrates with a sealing material interposed therebetween, which is small and consumes less power. Therefore, it is widely used as a display device for clocks, calculators, and the like.

Electro-optical display cells such as liquid crystal display cells are generally manufactured by a manufacturing method called a multi-manufacturing method. In this multi-process, electrodes for a plurality of cells are arranged and formed on two large substrates, and the two large substrates are bonded and polymerized through a sealing material that surrounds an electrode forming portion for each cell to assemble a cell container. In this method, a body is formed and then the cell container assembly is separated into individual cell containers.

That is, the above-mentioned liquid crystal display cell will be manufactured as follows, in the case of manufacturing a liquid crystal display cell in which a through hole is provided in the display section. As shown in FIGS. 4 to 6,
Frame-shaped sealing material 3,3 in which two large-sized substrates 10,10 are formed around each cell electrode forming portion, leaving liquid material injection ports 5,5, and a hole sealing material formed in a through hole drilling portion The cell container assembly A is adhesively polymerized via 3a, 3a to form a cell container assembly A as shown in the figure, and then the cell container assembly A is separated from the large-sized substrates 10, 10 by separating lines c, c.
Each of the structures in which the electrode substrates 1 and 2 are adhesively polymerized through the frame-shaped sealing material 3 and the hole sealing material 3a by cutting or breaking (cutting grooves are formed in advance in case of breaking) along separating the cell container B _1, B _2, the cell container B _1, B ₂ in a liquid crystal is injected from the liquid material inlet 5,5 (this implant may be collectively injected in the state of the cell container assembly a ), After the liquid substance injection port 5 is sealed, the through holes 4 and 4 are punched in the cell containers B ₁ and B ₂ so as to pass through the centers of the hole sealing materials 3a and 3a. It is done by a drill.

[Problems to be Solved by the Invention]

However, when the electro-optical display cell is manufactured by the above-described multi-manufacturing method, since the liquid substance injection ports 5 and 5 are provided in the individual cell containers B ₁ and B ₂ , the process of processing the cell container assembly A is performed. There is a drawback that the dust phase intrudes into the cell containers B ₁ and B ₂ through the liquid material injection ports 5 and 5 and causes defects in the cell containers. Particularly, in the case where the through holes are formed in the cell containers B ₁ and B ₂ as shown in FIGS. 4 and 5, when the through holes 4 and 4 are drilled, an abrasive material or cutting oil or the like is introduced into the injection port 5. , 5 penetrates into the cell containers B ₁ , B ₂ to generate defective cells.

The present invention has been made in view of the above-mentioned circumstances, and provides a method for manufacturing an electro-optical display cell capable of efficiently manufacturing a plurality of cell containers at a time without generating defective cells. To aim.

[Means for Solving the Problems]

The manufacturing method of the present invention is a method for manufacturing an electro-optical display cell in which a liquid substance is enclosed in a cell container formed by adhesively polymerizing at least two electrode substrates through a sealing material. A sealing material for forming a plurality of cells, which has an injection port in between, and a portion outside the dividing line that separates these large substrates into individual cells, where the injection port of the sealing material faces An outer store sealing material having a vent is provided in a portion other than the above, and the outer store sealing material is divided after the large-sized substrate is adhesively polymerized.

[Work]

As described above, between the at least two large-sized substrates on which a plurality of sealing materials are formed, the outside-sealing sealing material having the ventilation holes outside the dividing line for dividing the large-sized substrates into individual cell containers. However, the vent hole of this outer-sealing material is not formed in the portion facing the inlet provided in the sealing material of each cell container. Therefore, since the outer-sealing sealing material is always arranged outside the inlet of the sealing material of the cell container, the outer-sealing sealing material prevents dust phase or the like from entering from the outside of the two large substrates. In addition, no invasion into the individual cell container occurs, and no defect of the cell container due to intrusion of dust phase or the like occurs.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 in the case of manufacturing a liquid crystal display cell in which a through hole is provided in a display section. The same members as those in the conventional example shown in FIGS. 4 to 6 are denoted by the same reference numerals in FIGS. 1 to 3.

In the figure, 10 and 10 are two large-sized substrates that are adhesively polymerized through sealing materials 3, 3a and 6 which will be described later.
The cell electrodes formed on the upper electrode substrate 1 surface of the cell container B and the cell electrodes formed on the lower electrode substrate 2 surface (none of which are shown) are arranged alternately on the opposite surface of the cell container B for a plurality of cells. Further, the peripheral portions of the large-sized substrates 10 and 10 are defined as blank portions d and d which are cut off when the cell container assembly A is separated into individual cell containers B and B. Further, 3 and 3 are frame-shaped sealing materials that surround the formation portion of each cell electrode, 3a and 3a are hole sealing materials that seal the through-hole drilled portions of each cell electrode formation portion, and 6 is the large-sized substrate 10. , 10 is a sealant for enclosing the entire area of the opposing surfaces of the large container 10 outside the dividing lines c, c of the margins d, d cut off when the cell container assembly A is individually separated. , 10 and is interposed in the peripheral portion of the facing surface of the large-sized substrates 10, 10. The frame-shaped sealing materials 3 and 3 are formed over the entire area around the cell electrode forming portion, leaving the liquid material injection ports 5 and 5, respectively, and the outer-area sealing material 6 is a ventilation port 7.
Is formed over the entire peripheral portion of the large-sized substrates 10, 10.

The vent hole 7 is not located at the portion of the sealing material 3, 3 forming the individual cell containers B ₁ , B ₂ facing the liquid substance injection ports 5, 5. Therefore, two large substrates 10,10
Liquid substance injection ports 5, 5 of cell containers B ₁ , B ₂ arranged outside
Since the outer sealing material 6 is always arranged on the outside of the
A dust phase or the like does not enter the cell containers B ₁ and B ₂ from the outside of the large-sized substrates 10 and 10.

In the method of manufacturing an electro-optical display cell of this embodiment, cell electrodes for a plurality of cells are arrayed and formed on each of the two large substrates 10 and 10, and one of the two large substrates 10 and 10 is formed. After printing each of the sealing materials 3, 3a and 6, the respective sealing materials
The large-sized substrates 10 and 10 are adhesively polymerized via 3, 3a and 6 to form a cell container assembly A as shown in the figure, and the hole portions are formed in the cell containers B and B of the seal container assembly A. After the through holes 4, 4 are formed so as to pass through the centers of the sealing materials 3a, 3a, the cell container assembly A is separated into individual cell containers B, B. Since the material 6 is provided on the periphery of the large-sized substrates 10 and 10, when the large-sized substrates 10 and 10 are polymerized, the large-sized substrates 10 and 10 are sealed with the frame-shaped sealing material 3
Since the entire surface is uniformly supported by the outer sealing material 6 and the outer sealing material 6, the large substrates 10 and 10 are not bent, and the load applied to the frame-shaped sealing material 3 arranged in the peripheral portion is applied to the outer housing. Since it is dispersed by the sealing material 6, a large substrate 10,1
The gap between 0 becomes uniform over the entire surface. Then, after these large-sized substrates 10, 10 are adhesively polymerized, the blank portions d, d in which the outer yard sealing material 6 is disposed are cut off along the dividing lines c, c.

Further, the formation of the through holes 4 and 4 is performed by an ultrasonic perforator or a drill, and the abrasive mixed liquid or cutting oil used at the time of perforation is formed in the substantially entire peripheral portion between the large substrates 10 and 10. Since it is sealed by the outer yard sealing material 6, it does not flow into the cell container assembly A and enter the cell containers B and B. The vent hole 7 formed in a part of the outer-sealing portion formed by the outer-sealing sealing material 6 is volatilized when the sealing materials 3, 3a, 6 are sealing materials containing a volatile component (for example, glass frit). Although it is provided in order to allow the components to escape to the outside, it is desirable that this vent hole 7 is temporarily sealed when the through holes 4, 4 are bored. Further, the through holes 4, 4 may be formed by simultaneously performing all of the cell containers B, B, or by piercing one or a plurality of cell containers in sequence. Since the work is performed in the state of the cell container assembly A, it is possible to perform the drilling more efficiently than in the case where the drilling is performed after separating the individual cell containers B, B, and the drilling work is automated. You can also measure.

Further, the method of separating the cell container assembly A into the individual cell containers B, B is performed by cutting or breaking both large substrates 10, 10 along the dividing lines c, c as in the conventional method. After that, the display cell is completed by injecting a liquid substance (for example, liquid crystal) into the cell container B and then sealing the liquid substance injection port 5. The liquid substance may be injected into the cell containers B at once in all the cell containers B, B in the state of the cell container assembly A. In that case, an opening is made at the outer yard seal portion. The liquid material is injected by the vacuum injection method or the like by using the vent hole 7 (if it is temporarily sealed, it is reopened), or the blank parts d, d of the large-sized substrates 10, 10 are cut off and then the vacuum injection method is performed. For example, the liquid substance may be injected.

In the above embodiment, the case of manufacturing the electro-optical display cell having a single layer structure in which the liquid substance is enclosed between the two electrode substrates 1 and 2 has been described, but the manufacturing method of the electro-optical display cell of the present invention is 3 It can also be used to manufacture a display cell having a multi-layer structure in which a plurality of electrode substrates are adhesively polymerized through a sealant and a liquid substance is sealed between the electrode substrates. It can be widely used for manufacturing electro-optical display cells such as electrochromic display cells and electrophoretic display cells.

〔The invention's effect〕

The method for manufacturing an electro-optical display cell of the present invention is to arrange a sealing material for forming a plurality of cell containers between large substrates that undergo adhesive polymerization, and to arrange the cell containers at the periphery of the large substrate. An outer-furnace sealing material having a vent on the outside of the dividing line for separating the assembly is formed, and the vent of the outer-sealing sealing material is formed in a portion facing the inlet provided in the sealing material of each cell container. Since it is not formed, dust phase, etc. will not penetrate into the individual cell containers from the outside of the two large substrates, and multiple cell containers can be manufactured at a time without causing defects in the cell containers. And productivity is improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a cell container assembly manufactured by the manufacturing method according to an embodiment of the present invention, and FIGS. 2 and 3 are lines II-II and III-III of FIG. 1, respectively. FIG. 4 is a cross-sectional view taken by cutting with FIG. 4, FIG. 4 is a plan view showing a cell container assembly manufactured by a manufacturing method of a conventional example, FIGS.
The drawing is a cross-sectional view taken along line VV and line VI-VI in FIG. 4, respectively. B ... Cell container, 1, 2 ... Electrode substrate, 3 ... Frame-shaped sealing material, 3a ... Hole sealing material, 4 ... Through hole, 5 ... Liquid material injection port, 6 ... Outer chamber seal Material, 7 ... Vent, 10 ... Large substrate, A ... Cell container assembly, c ... Dividing line, d ... Blank area.

Claims (1)

[Claims] 1. A method of manufacturing an electro-optical display cell in which a liquid substance is enclosed in a cell container formed by adhesively polymerizing at least two electrode substrates through a sealing material.
There is an injection port between a large number of large substrates, and a sealing material for forming a plurality of cells, and an injection of the sealing material outside the dividing line for separating these large substrates into individual cells. An electro-optical display cell characterized in that an outer-seale sealing material having a vent is provided in a portion other than a portion where the inlets face each other, the large-sized substrate is adhesively polymerized, and then the outer-sealing sealing material is divided. Manufacturing method.