JPS5837526B2 - Exycell - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid crystal cell in which an upper substrate glass and a lower substrate glass are bonded together via an adhesive layer, and the cells are cut and divided to take out a plurality of cells.

In the present invention, when cutting and dividing a liquid crystal cell having a plurality of upper and lower cell substrate glasses of different sizes from two substrate glasses by cutting and dividing the cells, a groove wider than the cutting width is formed in advance at the cutting position on the adhesive surface side. This invention relates to a liquid crystal cell that can be easily cut.

An object of the present invention is to facilitate the cutting and division of a plurality of liquid crystal cells.

Another object of the present invention is to improve the quality of divided end faces and the external precision of liquid crystal cell substrate glass.

It is known to cut and divide a plurality of liquid crystal cells from two glass substrates.

To specifically explain the prior art with reference to FIG. 1, transparent electrodes 5 for a plurality of liquid crystal panels are provided on an upper substrate glass 1 and a lower substrate glass 2.
After creating, the two glass substrates are bonded together via an adhesive layer 3 having a predetermined shape.

FIG. 1a shows a state before two glass substrates are bonded together, and FIG. 1b shows a cross-sectional view of a state in which liquid crystal 6 is injected and sealed after bonding.

10 and 11 indicate divided portions, and FIG. 1C shows one liquid crystal panel that has been cut and divided.

Since it is necessary to take out the lead electrode 9 from the cell lower substrate glass 8, the sizes of the cell upper substrate glass 7 and the cell lower substrate glass 8 are different.

Therefore, the divided portions 10 and 11 must be cut while the upper substrate glass 1 and the lower substrate glass 2 are bonded together.

FIG. 1d shows a partially enlarged view of the divided portion.

In the method of forming cracks 12 on the surface with diamond and splitting, the cracks 13 are generated in any direction, and the split portion 10
It could not be divided accurately by 1 and 11, and the quality and accuracy were poor.

In addition, when cutting with a high-speed rotating grindstone, the gap 4 between the upper substrate glass 1 and the lower substrate glass 2 is about 10 μm, so when cutting the divided portion 11, the high-speed rotating grindstone hits the surface of the lower substrate glass 2, and the lead electrode 9 It had the disadvantage of cutting or damaging the material.

The present invention eliminates this drawback, and an embodiment thereof is shown in FIG.

FIG. 2a shows the state before the upper substrate glass 1 and the lower substrate glass 2, each having a transparent electrode 5 formed on one side, are bonded together via the adhesive layer 3.

Lead electrodes are omitted.

The upper substrate glass 1 has a width of 2 in the dividing part 11 before making the transparent electrode 5.
7/g/l to 5 m and a depth of about 0.2 to 0.5 m is formed.

FIG. 2b shows a sectional view after the liquid crystal 6 is injected and sealed after bonding.

Divided portions 10 and 11 have a width o. i~0. Cut it with a 2M high-speed rotating grindstone and divide it into multiple liquid crystal cells.

By cutting and dividing in this manner, the groove 14 will not cut or damage the lead electrode 9 formed on the lower substrate glass 2 when the rotary grindstone escapes during cutting.

It is appropriate to cut the cut portion 10 of the lower substrate glass 2 after cutting the divided portion 11 of the upper substrate glass 1.

Furthermore, by setting reference sides on the upper substrate glass 1 and lower substrate glass 2 during adhesion and aligning the reference sides, it becomes easy to assemble each liquid crystal cell with high precision.

Furthermore, since the cutting is performed using a high-speed rotating grindstone, the surface roughness of the end face is small and the quality is improved.

FIG. 2C shows a partially enlarged external view of the liquid crystal cell.

Since the end surface 15 of the cell upper substrate glass I on the adhesive layer side is chamfered in this way, the transparent electrode 17 for electrode conduction is attached to the end surface 15 of the cell upper substrate glass I using this chamfer. , cell lower substrate glass 8 and cell upper substrate glass 7
The electrodes 9 and 11 can be used for continuity with a conductive paste or the like 16.

The grooves 14 formed in the upper substrate glass 1 are shown in FIGS. 3a, b, and c.
Needless to say, there are many such things.

Further, the groove 14 formed in the liquid crystal cell may be formed not only on the lead electrode extraction side but also on other parts depending on the cutting method.

[Brief explanation of the drawing]

Figure 1a is an external view of a conventional liquid crystal cell before assembly.
FIG. 1b is a sectional view showing a conventional liquid crystal cell after assembly. Figure 1C is an external view of a conventional individual liquid crystal cell.
FIG. d shows a partially enlarged sectional view of a conventional dividing part. FIG. 2a is an external view of an embodiment of the present invention before a liquid crystal cell is assembled, FIG. 2b is a sectional view of the embodiment, and FIG. 2C is a partially enlarged external view of the embodiment. Further, FIGS. 3a, 3b, and 3c are external views of various grooves. 1... Upper substrate glass, 2... Lower substrate glass, 3... Adhesive layer, 4... Gap between upper substrate glass and lower substrate glass, 5 ...transparent electrode,
6...Liquid crystal, 7...Cell upper substrate glass, 8...Cell lower substrate glass, 9...Lead electrode, 10... Divided part of lower substrate glass, 1
1... Divided portion of upper substrate glass, 12...
・Crack, 13...Crack, 14...
Concave groove, 15... End face, 16... Conductive paste, 17... Transparent electrode for electrode conduction.

Claims (1)

[Claims] 1. In a liquid crystal cell in which an upper substrate glass and a lower substrate glass are bonded via an adhesive layer of a predetermined shape and then cut and divided to take out a plurality of cells, a cutting position on the adhesive surface side of at least one sheet of the substrate glass. A liquid crystal cell characterized in that a concave groove is formed that is wider than the cutting width.