JP2517821Y2 - Display cell - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a display cell that is filled with a display material such as a light valve, liquid crystal, electrochromic, and electrophoretic, and is applied to display, dimming, and the like.

[Prior art and its problems] Conventionally, when a display material is filled in a display cell, a thin tube such as an injection needle is inserted into the cell from the inter-substrate seal portion, and after the filling is completed, the thin tube is removed to cause a problem. The hole may be sealed with a curing agent or the like (for example, the actual application of the applicant of the present application is Sho 63-1).
No. 65820), the periphery of the display cell is sealed leaving a part of the opening, the display material is injected through the opening, and after the filling is completed, the part is sealed with a curing agent or the like (Practical application 1-60169). No.) etc. are taken.

In the former method, there is a risk that the outside air may enter the holes created when the thin tube is removed, and sometimes it may escape inside the display cell to form a large number of fine air bubbles, impairing the product value. It requires extremely careful operation, and in the latter case, after the display material is filled, the display material remaining in the opening should be wiped to prevent the possibility of obstructing the sealing by the curing agent, and then the sealing operation, etc. In both cases, production efficiency and efficiency are insufficient.

The present invention solves these problems, the injection operation of the display material and the sealing operation after the injection are extremely easy, and can be performed quickly, efficiently and efficiently, and the display electrode pattern film on the inner surface of the transparent substrate is provided. It is intended to provide a display cell in which lead wires can be easily taken out from the display cell.

[Means for Solving Problems] In the present invention, an injecting tube for a display material is interposed between transparent substrates facing each other with an appropriate interval, and the peripheral portions of both substrates are sealed with an adhesive curing agent. In the display cell in which both substrates are filled with the display material, a notch is provided in advance in the vicinity of the injection tube interposing portion of one of the substrates, and the injection tube is filled with the display material and then the through hole is formed. The rod-shaped sealing material is inserted and sealed, and after the sealing, the end portion protruding from the display cell of the injection tube including the rod-shaped sealing material is cut and removed. Furthermore, in the display cell, the injection tube is It is also used as a blocking member and / or an end spacer for preventing the adhesive curing agent from entering the inside of the display cell.

As the transparent substrate, known soda lime glass, aluminosilicate glass, borosilicate glass, various other inorganic glasses, or various polymers such as acrylate, methacrylate, vinyl chloride, celluloid, and cellulose derivative can be adopted.

A liquid material such as a light valve, liquid crystal, electrochromic, or electrophoretic material can be adopted as the display material, and its injection tube does not react with the display material such as metal, inorganic glass, or resin, and does not deteriorate or deteriorate. Use materials that are easy to process.

[Embodiment] The present invention will be described below based on an embodiment.

The attached FIG. 1 is a partial perspective view of a display cell. Reference numerals 1 and 2 are transparent substrates made of soda-lime type glass, and the injection tube body 3 can be easily attached and fixed to the corner of one glass 1. It is preferable to grind the grinding groove 4 in advance. The peripheral portions 5 and 6 of the opposing surfaces of the transparent substrates 1 and 2 are sealed with a sealing layer (not shown) made of an epoxy adhesive curing agent or the like.

The injection tube 3 suspends a display material 7 (indicated by an arrow), for example, a specific acicular colloid in a dispersion medium, and introduces a so-called light valve dispersion liquid in which the acicular colloid is oriented in a specific direction in an electric field. The through hole 8 is provided through the introduction tube (not shown) that has the through hole 8 and is detachably connected to one end 9 of the through hole 8.
After that, the inside of the display cell is filled, and in this embodiment, the one made of polyethylene is adopted.

After the display material 7 is filled, a rod-shaped sealing material (hereinafter referred to as a rod-shaped plug) 10 made of Teflon, for example, is inserted into the through hole 8 of the injection pipe body 3 to temporarily seal it, and then the rod-shaped plug 10 together with the pipe. One end 9 of the body 3 is cut off, and the portion is covered with an epoxy curing agent or the like to complete the sealing.

As an example of the manufacturing means according to the present embodiment, first, a grinding groove 4 is formed in an injection tube mounting portion at a desired corner portion of the transparent substrate 1, and the injection tube 3 is attached to the portion 4 with an adhesive. To do.

At this time, although not shown, a grinding groove similar to the grinding groove 4 is formed in a corner portion diagonally opposed to the front corner portion of the transparent substrate 1, and an air discharge similar to that of the injection pipe body 3 is formed in that portion. It is preferable to attach a tubular body.

The injection tube body 3 and the air discharge tube body may be respectively arranged at the four corners of the transparent substrate 1 so as to inject and discharge at a plurality of locations.

Next, an adhesive curing agent (not shown) such as epoxy is applied to the entire area of the inner surface peripheral portions 5 and 6 of the transparent substrate 1 facing the transparent substrate 2 to an appropriate thickness, and the transparent substrate 2 is overlaid and integrated to form the transparent substrate 1. A frame of a display cell (referred to as an empty cell) having a minute gap between two is formed.

Further, a storage tank for display material (not shown) and an injection pipe body 3 are connected via an introduction tube, and preparation is made to inject the liquid 7 for display material into the empty cell, while an air discharge pipe body and a suction device (not shown) are provided. The liquid 7 of the display material is naturally injected by decompressing the inside of the empty cell after connecting with a discharge tube and preparing to reduce the inside pressure of the empty cell.

After the inside of the cell is filled, the introduction tube is removed from the injection tube body 3, and the rod-shaped stopper 10 is inserted into the through hole 8 to temporarily seal. A rod-shaped plug is inserted into the air discharge tube by the same operation.

Further, including the rod-shaped plug 10, the end portion 9 protruding from the display cell of the injection pipe body 3 is cut and removed, and a resin coating is applied thereon, and the air discharge pipe body is similarly operated to complete the sealing. Complete the cell.

In addition, in the present invention, since the notch 11 is provided at the corner of the transparent substrate 2 where the injection tube body is interposed, the injection tube body 3 is provided.
By making it easier to attach the introducing tube to the end portion 9 of the transparent substrate, and further exposing the conductive pattern film for display (not shown) applied to the inner surfaces of the transparent substrates 1 and 2 to the portion,
The lead wire is easily taken out from the pattern film. Finally, the notch 11 is covered with resin or the like.

In the present embodiment, the complicated operation as described above is not required, and the sealing can be performed very easily and quickly, and the sealing can be completed completely and sufficiently. In addition, the shape and size of the injection pipe and air discharge pipe can be freely set, and also acts as a damming member that prevents the adhesive curing agent from entering excessively inside the cell when sealing the periphery of the display cell with the adhesive curing agent. Alternatively, it may be used as an end spacer for keeping the distance between the transparent substrates constant.

[Advantage of the Invention] According to the present invention, the operation of injecting the display material into the display cell and the sealing operation after the injection can be easily and easily performed and can be sufficiently sealed. In addition, the conductive pattern film for display on the inner surface of the transparent substrate The lead wire can be easily taken out, and the injection tube can be used as an end spacer or a blocking member, which is a remarkable effect in practical use.

[Brief description of drawings]

 FIG. 1 is a partial perspective view of the present invention. 1, 2 ... Transparent substrate, 3 ... Injection tube

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-50-87666 (JP, A) JP-A-51-3253 (JP, A) JP-A-50-147957 (JP, A) JP-A-50- 68694 (JP, A) JP 49-45752 (JP, A) JP 51-54449 (JP, A) Actual 52-81144 (JP, U) Actual flat 1-49921 (JP, U)

Claims (2)

(57) [Scope of utility model registration request] 1. An injection tube for a display material is interposed between the two transparent substrates facing each other with an appropriate interval, and the peripheral portions of both substrates are sealed with an adhesive curing agent so that the display material is placed in both substrates. In the filled display cell, a notch is formed in advance in the vicinity of the interposing portion of the injection tube body of one of the substrates, and the injection tube body is filled with the display material, and then the through hole is sealed by inserting a rod-shaped sealing material. A display cell, characterized in that, after being stopped and sealed, the end portion protruding from the display cell of the injection pipe body including the rod-shaped sealing material is cut and removed. 2. The display cell according to claim 1, wherein the injection tube is also used as a damming member and / or an end spacer for preventing the adhesive curing agent from entering the inside of the display cell.