Liquid crystal cell gap adjusting device, pressure packaged device and manufacture method for liquid crystal display

Abstract

A sell gap adjusting device with which cell gaps of one or more liquid crystal cells can be exactly and promptly adjusted, a pressure- sealing device, and to provide a manufacturing method of a liquid crystal display device. The cell gap adjusting device 2 for adjusting the thickness (cell gap) between a pair of substrates, in the liquid crystal cell 1, where a liquid crystal is injected between the pair of substrates is characteristically provided with a supporting means 3 having one or more pairs of support jigs 30 for sandwiching and supporting respective liquid crystal cells and frame shaped seals 32, for sealing which are disposed between the liquid crystal cell and the supporting jigs and whose inner surfaces form closed spaces, together with both outer surfaces of the pair of substrates of the liquid crystal cell and surfaces opposed to the liquid crystal cell 1 of the pair of support jigs and a pressurizing means 50, for simultaneously pressurizing both the outer surfaces of the pairs of substrates of the liquid crystal cell 1 by the pressure of the fluid introduced into the hermetically sealed space.

Description

technical field [0001] The present invention relates to a liquid crystal cell gap adjusting device for adjusting a gap between a pair of substrates in a liquid crystal cell (hereinafter referred to as "liquid crystal cell gap"), a pressure sealing device and a method for manufacturing a liquid crystal display device. Background technique [0002] The liquid crystal device widely used so far is generally manufactured in this way, that is, a pair of opposing substrates are bonded to form a liquid crystal cell through a sealing material having a frame shape and an opening at a predetermined position on the frame wall, and then the liquid crystal cell is formed by The above-mentioned opening of the sealing material is manufactured by injecting liquid crystal into the liquid crystal cell and sealing the opening with the sealing material. Here, a so-called vacuum injection method is widely used as a method of injecting liquid crystal into the above-mentioned liquid crystal cell. ...

AI Technical Summary

Problems solved by technology

[0007] However, in Figure 14 In the shown pressurizing device, since the plate-shaped member 90 directly contacts the substrate surface of the liquid crystal cell 1, so in order to accurately adjust the gap of the liquid crystal cell 1, the contact surface must be completely flat, but the plate-shaped member 90 There is a limit to the fact that the surface becomes such a perfect plane, and in the present case, it is inevitable that some degree of unevenness will be formed on the surface, or the thickness of the plate-like member 90 will be uneven.

Moreover, there is a problem that the liquid crystal cell gap cannot be accurately adjusted to the target value by directly processing the liquid crystal cell 1 with such an incomplete plane, and the expected display characteristics cannot be obtained in the completed liquid crystal device.

[0008] In addition, in Figure 14 In the shown pressurizing device, since the spacer paper 91 directly contacts the substrate surface of the liquid crystal cell 1, it is different from the Figure 12 The same is true for the pressure device shown, but uniform pressure cannot be applied to the substrate surface of the liquid crystal device 1, and there is a problem that desired display characteristics cannot be obtained in the completed liquid crystal device.

[0009] In addition, since the pressure applied to the plate member 90 is absorbed by the spacer paper 90 during the period from when the plate member 90 is pressurized until the spacer paper 90 is sufficiently shrunk, a desired pressure cannot be applied to the liquid crystal cell 1. on the substrate surface

As a result, there is a problem that the time for the cell gap of the liquid crystal cell 1 to reach the target value is extended by the time corresponding to the above-mentioned period.

In addition, in the case of improving production efficiency and increasing the number of processed liquid crystal cells 1, since the number of spacers 91 inserted between each liquid crystal cell increases, such a problem is particularly significant.

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