JPH1039319A - Gap setting jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to set a gap by uniform pressurization by pressing the entire part of the front surface inclusive of the peripheral ends of a glass panel with the atm. pressure by a suction and reduced pressure by means of a pressing plate via a flexible sheet. SOLUTION: The glass panel W formed by interposing spherical spacers 22 between two upper and lower substrates 20 and 21 and applying a thermosetting sealing material 23 between the peripheral edges of these substrates 20, 21 is placed on a holding plate 11 and an annular spacer 12 is placed thereon so as to enclose the glass panel W. Next, the pressing plate H meeting to the size of the glass panel W is placed on the glass panel W and a pressurizing sheet member P including the flexible sheet 14 is placed on a panel supporting member G in correspondence thereto. A section pad 5 and a vacuum pump are communicated in this state to cause the suction and pressure reduction between the panel supporting member G and the pressurizing sheet member P. As a result, the flexible sheet 14 is pressed by the atm. pressure and is brought into tight contact with the front surface of the pressing plate H. Further, the entire surface inclusive of the peripheral ends of the glass substrate 20 is uniformly pressurized, by which the gap is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for pressurizing a liquid crystal panel coated with a thermosetting resin between two glass substrates having a transparent electrode disposed on an inner surface thereof to form a uniform gap.

[0002]

2. Description of the Related Art Conventionally, an indirect pressurizing method using vacuum pressure has been known as a method for setting a gap in a liquid crystal panel as described above, as disclosed in Japanese Patent Application Laid-Open No. 1-257824. However, the jig for implementing this method has a problem that the force for clamping the glass panel differs depending on the thickness of the glass panel, and the gap setting accuracy is deteriorated. Japanese Unexamined Patent Application Publication No. 8-26788 filed by the applicant of the present invention is also known as a gap setting jig for solving such a problem.

[0003]

However, Japanese Patent Application Laid-Open No. 8-26 / 1994
The gap setting jig disclosed in Japanese Patent Publication No. 788 cannot cope with a difference in the size of the glass panel because the glass panel itself is used as a part of the jig. It was necessary to prepare a gap setting jig corresponding to each. The present invention has been made in view of the above-described problems, and has a jig capable of pressing the entire glass panel with a uniform pressure regardless of the thickness of the glass panel and capable of forming a gap for glass panels of different sizes. The purpose is to provide.

[0004]

In order to achieve the above object, the present invention provides a gap setting jig comprising: a pair of left and right support legs erected at both ends of an upper portion of a substrate; A pair of mounting members provided, and a suction pad that communicates with a vacuum source that is disposed so that its tip protrudes slightly above the installation surface of the mounting member in the lower method of the mounting members of the pair of legs, A holding plate formed in a size that can be mounted on the pair of mounting members and having a suction hole vertically penetrated at a position with respect to the suction pad; A panel support member consisting of a notched annular spacer mounted on the upper inside of the suction hole of the plate; and having the same dimensions as the outer dimensions of the glass panel mounted on the holding plate. It has good thermal conductivity, rigidity, A high pressing plate; a frame-shaped frame plate placed above the holding plate; and a flexible sheet stretched inside the lower surface of the frame plate while maintaining airtightness. And a pressure sheet member provided with an annular packing on the periphery of the lower surface of the frame plate body. Also, the structure of the assembly frame is characterized in that a pair of mounting members and suction pads are arranged in a plurality of stages with a vertical interval with respect to the support leg.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. The gap setting jig according to the present invention comprises an assembly frame F, a panel support member G, a pressing plate H, and a pressure sheet member P, and has a first configuration. The structure of the memory F is as follows. A pair of left and right aluminum legs 2, 2A are vertically erected at both upper ends of a substrate 1 having a pedestal, and the upper ends of the legs 2, 2A are connected by a frame 3 to form the legs 2, 2A. It is fixed so as not to be upset. A cross section L is provided inside the upper position and the intermediate position of the pair of legs 2, 2A.
The mounting members 4 and 4A are fixed in pairs, and the mounting members 4 and 4A of the pair of legs 2 and 2A are fixed.
The suction pads 5, 5A made of silicon, whose tips protrude slightly higher than the mounting surface of the mounting member 4.4A, are attached to the lower position through mounting frames 6, 6A. . The suction pads 5, 5A are connected to a vacuum pump 9 through internal ventilation holes 7, 7A and heat-resistant hoses 8, 8A. The above is the configuration of the assembly frame F.

Next, the structure of the panel supporting member G which is the second structure will be described. Suction holes 10 formed in a size that can be mounted on the pair of mounting members 4 and 4A and penetrating vertically at positions corresponding to the suction pads 5 and 5A,
A holding plate 11 made of ceramic with a hole 10 and suction holes 10 and 10 on the holding plate 11 are arranged at an inner position, and a part of the holding plate is cut out for ventilation (not shown). And an annular spacer 12 made of aluminum. The annular spacer 12 has a wall width (increased or shortened inward in accordance with the size of a glass panel W to be described later, thereby increasing the width of the hollow portion surrounded by the annular spacer 12). Is changed.
The thickness of the annular spacer 12 is slightly higher than the thickness of the glass panel W and the pressing plate H described later. The above is the configuration of the panel support member G. The thickness of the annular spacer 12 is the same as that of the glass panel W and the pressing press.
The thickness of the glass panel W and the pressing plate H may be within a range of ± 0.5 mm with respect to the thickness of the glass panel W and the pressing plate H. Next, the configuration of the pressing plate H as the third configuration will be described. The glass panel W is made of a ceramic plate having the same outer dimensions as that of the glass panel W, having good thermal conductivity and rigidity, and having high plane accuracy.

Next, the structure of the pressure sheet member P which is the fourth structure will be described. A frame-shaped frame plate 13 placed on the upper part of the holding plate 11, and a flexible sheet 1 made of silicon rubber sheet stretched inside the lower surface of the frame plate 13.
4 and an annular packing 15 made of silicon is provided on the periphery of the lower surface of the frame plate 13. The frame plate 13 and the flexible sheet 14 are fastened by a sheet retainer 17 and mounting bolts 18 with a silicone sheet packing 16 fitted on the inner peripheral edge of the lower surface of the frame plate 13 interposed therebetween. And kept confidential. The suction holes 10, 1
0 is provided in a positional relationship between the annular packing 15 and the sheet presser 17. The above is the configuration of the pressure sheet member P. In FIG. 1, M is a hot air circulation type oven.

A procedure for forming a gap in the glass panel W by the above-described structure will be described. The assembly frame F is placed on a surface plate (not shown) outside the hot air circulation oven M, and the holding plate is formed. To the mounting members 4, 4A
Put on. At this time, the tips of the suction pads 5, 5A are pressed downward and slightly deformed, and the suction holes 10, 10 and the suction pads 5, 5A are in communication. Next, a glass panel W having a spherical spacer 22 interposed between the upper and lower glass substrates 20 and 21 and a thermosetting sealing material 23 applied between the peripheral edges of the glass substrates 20 and 21 is prepared. Holding pre
An annular spacer 12 is placed on the glass panel W and is formed in an annular shape corresponding to the size of the glass panel W.
Is placed so as to surround it. Next, a pressing plate H corresponding to the size of the glass panel W is placed on the glass panel W. Thus, the glass panel W is placed on the upper part of the panel supporting member G, and the pressing plate H is placed on the glass panel W. Next, the pressure sheet member P is placed on the panel supporting member G in a corresponding manner. (Fig. 2)

In this state, the suction pads 5, 5A and the vacuum pump 9 are communicated with each other, so that the panel supporting member G and the pressure screen are connected.
And the pressure between the member P is reduced. Due to this suction and pressure reduction, the space defined by the panel supporting member G and the pressure sealing member P (the inside of the annular packing 15) and the air inside the glass panel W are sucked, and the pressure is reduced, resulting in a flexible seal.
The plate 14 is pressed by the atmospheric pressure and closely adheres to the upper surface of the pressing plate H. Further, the entire surface including the peripheral edge of the glass substrate 20 is uniformly pressed to form a gap. Due to the suction pressure, the frame plate 13 is brought into close contact with the holding plate 11 via the annular packing 15, and the suction pads 5, 5A are also brought into close contact with the holding plate 11, so that the assembly frame F and the panel supporting member G are provided. Then, the pressing plate H and the pressing sheet member P are integrally sucked and held.

Next, the above-mentioned suction and pressure reduction is continued, and when the internal pressure reaches a predetermined pressure, the integrally held jig is put into a hot air circulation oven M and heated for a predetermined time (1-2 hours) (15 hours).
0 ° C.) to react and harden the sealing material 23.
Thereafter, the jig is taken out of the hot-air circulation oven M and is allowed to cool naturally. When the temperature of the glass panel W drops to the greenhouse, the suction of the vacuum pump 9 is cut off, and the pressure sheet member P and the pressing plate H are cut off. Is removed, the glass panel W with the gap set out is taken out, and the gap setting operation is completed. (The vacuum pump 9 may be shut off before the natural cooling.) When the outer dimensions of the glass panel W for forming the gap change, the sizes of the pressing plate H and the annular spacer 12 may be changed. Become. The reason is that the pressing plate H
Needs to be in contact with the entire surface of the glass panel W. If the space between the annular spacer 12 and the glass panel W is too wide, the flexible sheet 14 is held by the holding plate 1 by suction and pressure reduction.
This is in order to prevent the inside pressure from being reduced due to the direct contact with the upper surface of the first member.

[0011]

According to the present invention, as is apparent from the above description, the entire upper surface including the peripheral edge of the glass panel is sucked and depressurized by the pressing plate via the flexible sheet regardless of the thickness of the glass panel. , And pressurization can be performed by uniform pressure. Furthermore, even if the size of the glass panel changes, the pressing plate and annular space
It can be handled simply by changing the size of the surface, and can be used as a versatile gap-making jig.

[Brief description of the drawings]

FIG. 1 is a front view showing a gap setting jig placed in a hot air circulation oven.

FIG. 2 is an enlarged sectional view of a portion A in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 2A Support leg 4 4A Placement member 5 Suction pad 9 Vacuum pump 10 Vent hole 11 Holding plate 12 Annular spacer 13 Frame plate 14 Flexible sheet 15 Annular packing 16 Sheet packing F Assembly frame G Panel support member H Press plate P Press sheet member

Claims (2)

[Claims] 1. A pair of left and right supporting legs erected on both ends of an upper portion of a substrate, a pair of mounting members provided inside the pair of supporting legs so as to face each other, and a lower portion of the mounting members of the pair of supporting legs. An assembling frame comprising a suction pad, the tip of which protrudes slightly above the mounting surface of the mounting member and communicates with a vacuum source; and a size mountable on the pair of mounting members. A holding plate formed with a suction hole penetrating vertically at a position corresponding to the suction pad, and a notched annular member mounted on the upper inside of the suction hole of the holding plate. A panel supporting member consisting of a spacer; a pressing plate having the same dimensions as the outer dimensions of the glass panel placed on the holding plate, having good thermal conductivity, being rigid, and having high plane accuracy. And a frame-shaped frame plate placed on top of the holding plate A pressure sheet member comprising a flexible sheet stretched inside the lower surface of the frame plate body while maintaining airtightness, and provided with an annular packing around the lower surface of the frame plate body; A jig for forming a gap; 2. The assembly frame according to claim 1, wherein a pair of mounting members and a suction pad are arranged in a plurality of stages at an interval vertically above and below said support leg. Item 1. A gap setting jig according to item 1.