JPS636527A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To equalize cell gap by mixing glass fibers and plastic beads whose diameter is a little larger than that of said fiber, as a gap spacer material between two pieces of electrode substrates. CONSTITUTION:A glass fiber 3, and a plastic bead 4 whose diameter is a little larger than that of said fiber are dispersed and put in as a gap spacer material between two pieces of electrode substrates 1, 2. Also, a liquid crystal material 6 is enclosed between the substrates 1, 2, and the periphery is sealed with a sealing material. In case of a room temperature state, the plastic bead 4 is deformed elastically to the diameter of the glass fiber 3 and contracts, and in case of a high temperature state, as the internal capacity of a cell increases due to an expansion of the liquid crystal material 6, the plastic bead 4 returns to its original state. Accordingly, since the plastic bead is mixed as the gap spacer material, the cell gap is held uniformly, and a high temperature color shade of a large-sized liquid crystal element can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal display element, and more particularly to a spacer material for forming a gap in a large liquid crystal display element.

[Conventional technology]

In conventional liquid crystal display elements, glass fibers, plastic beads, and the like are used as gap spacer materials that are dispersed within cells to create gaps, and these are dispersed alone. As a method for dispersing such a gap spacer material, for example, the method shown in Japanese Patent Application Laid-Open No. 55-57821 is known.

[Problem that the invention seeks to solve]

Recently, large-sized liquid crystal display elements have come out in which the color tone changes completely even with a gap difference of about 0.2 to 0.3 tna. In liquid crystal display devices that have strict requirements for cell gap accuracy, with conventional structures, when the cell is heated to high temperatures, the expansion of the liquid crystal material causes distortion in the electrode substrate, creating gap unevenness within the cell and causing color unevenness defects. turn into.

An object of the present invention is to provide a liquid crystal display element that does not exhibit color unevenness even at high temperatures.

[Means for solving problems]

The above object is achieved by mixing and dispersing glass fibers and plastic beads having a slightly larger diameter than the glass fibers as a gap spacer material.

[Effect]

Plastic beads have a higher modulus of elasticity than glass fibers, and when the liquid crystal material inside the liquid crystal cell expands when the cell is lying high, it acts like a spring, correcting gap irregularities caused by distortion of the electrode substrate. Furthermore, since the cell gap at room temperature and low temperature is determined by the glass fiber, a uniform cell gap can be maintained at all times.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows the state at room temperature, and FIG. 2 shows the state at high temperature. Glass fibers 3 and plastic beads 4 are dispersed as spacer materials between the two electrode substrates 1 and 2, the periphery is sealed with a sealing material 5, and a liquid crystal material 6 is sealed inside. Here, the outer diameter of the plastic beads 4 is slightly smaller than the outer diameter of the glass fiber 3 (0
, about 2 to 0.3 p). Further, at room temperature, as shown in FIG. 1, the plastic beads 4 are sealed with internal pressure so that they are elastically deformed and contracted to the diameter of the glass fibers 3.

Therefore, in a high temperature state, the liquid crystal material 6
When the internal volume of the cell increases due to thermal expansion.

Along with this, the elastic deformation of the plastic beads 4 returns to its original state, so that although the cell gap becomes larger, the uniformity of the gap is maintained.

〔Effect of the invention〕

According to the present invention, since the gap spacer is made by mixing and dispersing glass fibers and plastic beads whose diameter is slightly larger than that of the glass fibers, it is possible to always maintain a uniform cell gap, and it is possible to maintain a uniform cell gap. High-temperature color unevenness of display elements can be prevented.

[Brief explanation of the drawing]

The figure shows one embodiment of the liquid crystal display element according to the present invention.
The figure is an explanatory cross-sectional view at normal temperature, and FIG. 2 is an explanatory cross-sectional view at high temperature. 1.2... Electrode substrate, 3... Glass fiber, 4
...Plastic beads, 5...Sheet material, 6°°°
Liquid crystal materials・・Pa）Representative Patent attorney
Katsuo Ogawa

Claims (1)

[Claims] 1. Distribute gap spacer material between two electrode substrates,
In a liquid crystal display element whose periphery is sealed with a sealing material and a liquid crystal material is sealed inside, a gap spacer material in which a mixture of glass fiber and plastic beads with a diameter slightly larger than the glass fiber is dispersed is used. Characteristic liquid crystal display element.