JPS5845010B2 - How to attach the deflection plate to the active element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a polarizing plate comprising a polarizing member having a polarizing effect of transmitted light and a protector provided via an adhesive, to an active element such as a liquid crystal element that encapsulates a liquid crystal material and has optical rotation. This relates to how to attach it to a

First, as a premise for explaining the present invention, the structure of the polarizing plate 1 will be described first.
This will be explained based on the figure and FIG.

In Fig. 1, reference numeral 2 denotes a polarizing plate having a light polarizing effect, which is composed of, for example, a cellulose plastic substrate and a thin film of polyvinyl alcohol (P, V, A) adsorbed with iodine (I) or dye. ing.

3 is a protective film for protecting the surface of the polarizing plate 2 from scratches, dust, dirt, etc., and polyethylene, polyvinyl chloride, etc. are used.

Reference numeral 4 denotes an adhesive layer for attaching the protective film 3 to the polarizing plate body 2, and is made of an adhesive material that does not remain on the polarizing plate body 2 when the protective film 3 is peeled off from the polarizing plate body 2.

Reference numeral 5 denotes an adhesive that has the function of attaching the polarizing plate 2 to an active element (not shown) such as an optically rotating liquid crystal element filled with a liquid crystal material, and has good transparency and adhesion, and has little coloration. Acrylic adhesives and adhesives are used.

Reference numeral 6 denotes a protector having a function of protecting the adhesive body 5 before attaching the polarizing plate body 2 to the active element via the adhesive body 5, and the adhesive surface with the adhesive body 5 is coated with a release agent such as silicone. Therefore, even if the protective body 6 is peeled off, the adhesive body 5
does not adhere to the force of the protector 6 and remains on the polarizing plate 2.

FIG. 2 shows the other side of the polarizing plate 1, and the same components and operating members as in FIG. 1 are denoted by the same reference numerals, and their explanations will be omitted.

7 is a reflector that has the effect of reflecting light entering the polarizing plate 2, and is made of aluminum, silver, gold, copper, or aluminum with an alumite surface, or is made of a metal base material with silver, gold, or copper. A metal plated with chromium, etc. is used.

8 is an insulator made of a thin plate of polyester, polyethylene, vinyl chloride, polypropylene, etc.; 9 is an adhesive layer that adheres the reflector 7 and the insulator 8; however, in some cases, the insulation may be directly insulated without using the adhesive layer 9. body 8 and reflector 7
In some cases, it is attached using the heat pressure bonding method.

The insulator 8 not only has an electrical insulation function, but also prevents the reflector 7 from being scratched when attaching the adhesive 10 to the reflector 7, when attaching the polarizing plate 1 to the reflector 7, or when cutting it.
It also has the effect of preventing deformation.

According to the experimental results, the reflector 7 has a thickness of 10 to 50 μm.
An aluminum plate with a thickness of 2 is used as the insulator 8 when gluing and cutting it, or when attaching the adhesive 10.
It is best to use a polyester plate with a thickness of 0 to 50 μm since the aluminum plate will not be damaged or deformed.

Note that the adhesive body 10 that is opposite to the adhesive body 5 is generally used.

Conventionally, as a method for attaching the polarizing plate 1 having the above structure to an active element, the protector 6 was peeled off using an instrument such as tweezers, and then the protector 6 was attached to the active element.

However, in this method, when the protective body 6 is peeled off, the adhesive body 5 is also grabbed with tweezers or the like at the same time, and as a result, the adhesive body 5 comes off from the polarizing plate body 2.
The entire surface of the adhesive 5 cannot be completely attached to the active element, and the polarizing plate 2 may easily peel off from the active element, or the adhesive 5 may
There were drawbacks such as poor display quality of active elements due to the lack of .

Furthermore, in the conventional method, the protective bodies 6 were manually peeled off one by one, which resulted in a drawback that the work efficiency was significantly reduced.

The present invention has been made to solve these conventional drawbacks, and the object of the present invention is to be able to reliably attach a polarizing plate to an active element, and to be able to perform continuous attaching using fully automated equipment. The pasting of polarizing plates provides a method that can significantly enhance the polarizing properties.

Another object of the present invention is to provide a method for gluing polarizing plates in which the positional relationship between the polarizing plate and the active element can be accurately determined.

The present invention will be explained below based on the illustrated embodiments.

3 and 4 illustrate the first gluing method of the present invention.

In FIG. 3a, 11 is a support and fixing body made of polyester, polyethylene, polypropylene, vinyl chloride, etc., and 12 is an alignment body for aligning the polarizing plates 1 in a predetermined positional relationship. Support fixed body 1
1 is attached, and then the polarizing plate 1 is supported and fixed to the supporting and fixed body 11 in a predetermined positional relationship.

Next, the peeling body 13 is attached to the alignment body 12.

This peeling body 13 is for peeling off the protective body 6 from the polarizing plate 2, and is a tape-shaped thing made of a base material such as polyethylene or vinyl chloride treated with an adhesive. Tape using a base material such as vinyl chloride is optimal.

Next, as shown in FIG. 3, the release body 13 is pressed down with a presser 14 and attached to the polarizing plate 1, that is, the protection body 6.

When the release body 13 is peeled off after releasing the pressing state by the presser body 14, the protector 6 is attached to the release body 13 and removed, and the adhesive body 5 of the polarizing plate 1 is removed as shown at 15 in FIG. 4a. It becomes exposed.

At this time, it is necessary that the adhesive force between the adhesive body 5 and the protector 6 is sufficiently smaller than the adhesive force between the support fixing body 11 and the polarizing plate 1. Silicone rubber t: What rubber percentage [about 20 to 100 is preferable, and the shape may be flat, spherical, or hemispherical, but the outer dimensions should be larger than that of the polarizing plate 1. Since the peeling body 13 is attached to the entire surface, the polarizing plate body 2
This is preferable because the protector 6 can be easily peeled off.

After removing the protective body 6 by the above method, the exposed adhesive body 5 supports the polarizing plate body 2 together with the fixed body 11 and supports the active element (
(not shown), and then the supporting fixing body 11 is removed from the polarizing plate body 2.

Next, a second method shown in FIGS. 5 and 6 will be explained.

This method of gluing is to support and fix the polarizing plate 1 to the support and fixation body 11 via the adhesive and fixation body 16 formed on the support and fixation body 11, peel off the protector 6 with the peeling body 13, and then use the adhesive body 5 to polarize the polarizing plate 1. Gluing is a method in which the plate body 2 is attached to the active element together with the supporting fixture 11, and then the supporting fixture 11 is removed from the polarizing plate body 2.

That is, in this method, the supporting and fixing body 11 is used to support and fix the polarizing plate 1 and to align the polarizing plate 1 in a predetermined positional relationship, and the guide hole 17 is provided to feed the polarizing plate 1 to a predetermined position. It is being

In the case of this method, the supporting and fixed body 11 is formed into a film shape with a small elongation, for example, with a thickness of 0.02 to 0.371 mm, in order to obtain a predetermined positional relationship and a predetermined feed dimension relationship.
Polyester and polypropylene plastics with a gl1 of about 1 are suitable.

5a and 5b show that the entire surface of the polarizing plate 1 is supported and fixed to the support and fixing body 11 via the adhesive fixing body 16, and therefore the peeling body 13 is provided so as to face the adhesive fixing body 16.

On the other hand, in the method shown in FIGS. 6a and 6b, in order to make it easier to attach the peelable body 13 to the polarizing plate 1 and to make it easier to peel off the protective body 6, the peelable body 13 and the adhesive fixing body 16 do not face each other. By providing this structure, a part of the polarizing plate 1 can be supported and fixed to the support and fixation body 11 via the adhesive and fixation body 16 without the peeling body 13 coming into contact with the support and fixation body 11.

As is clear from the above explanation, according to the method of the present invention,
The polarizing plate is supported and fixed on the supporting and fixed body in a predetermined positional relationship, and then the polarizing plate is attached to the active element with the protective body peeled off. After that, the supporting and fixed body is peeled off to remove the polarizing member. Since it is attached to the active element, there are no drawbacks of the conventional method, and the polarizing plate can be reliably attached to the active element, and the process can be done continuously using fully automated equipment. Therefore, work efficiency can be significantly improved.

Further, according to the present invention, the effects are remarkable, such as the positional relationship between the polarizing plate and the active element being determined with high accuracy.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of the polarizing plate, FIG. 2 is a sectional view showing the other side of the polarizing plate, FIGS. 3 and 4 show the first gluing method of the present invention, and the third Figure a is a partially cutaway enlarged sectional view showing the state before the release body is attached to the polarizing plate with the presser body, and Figure 3 is a partially cutaway view showing the state where the release body is attached to the polarizing plate using the presser body. FIG. 4a is a plan view showing the alignment state of the polarizing plates, FIGS. 4 and b are longitudinal sectional views of FIG. 4a, and FIG.
6 shows the second gluing method of the present invention, and FIG. 5a is a plan view showing a state in which the entire surface of the polarizing plate is aligned with the support and fixing body via the adhesive fixing body. FIG. 5 is a longitudinal cross-sectional view of FIG. 5a, and FIG. 6a is a plan view showing a state in which a part of the polarizing plate is supported and fixed to a support fixing body and aligned through an adhesive fixing body that does not face the peeling body, FIG. 6 is a longitudinal sectional view of FIG. 6a. 1... Polarizing plate, 2... Polarizing plate body, 5...
...Adhesive body, 6...Protection body, 11...
...Supporting and fixing body, 13...Peeling body, 16...
...adhesive fixing body.

Claims (1)

[Scope of Claims] 1. A polarizing plate comprising a polarizing member having a polarizing effect on transmitted light and a protector provided via an adhesive is attached to an active element such as a liquid crystal element containing a liquid crystal material and having optical rotation. In the method, the polarizing plate is supported and fixed on a supporting fixed body, the protective body is peeled off with a peeling body, the polarizing member is attached to the active element together with the supporting fixed body with an adhesive, and then the supporting fixed body is removed by the force of the polarizing member. ) to remove the polarizing plate from the active element. 2. The active element of the polarizing plate according to claim 1, wherein the polarizing plate is supported and fixed to the supporting fixed body through an adhesive fixed body formed on the upper surface of the supporting fixed body so as not to face the peeling body. There is a method to attach it to.