JPH03217820A - Liquid crystal display element - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a method for easily adjusting the facing distance of the glass substrates over the entire surface when forming a space surrounded by a pair of glass substrates and a sealing material, that is, a liquid crystal cell. The present invention relates to a liquid crystal display element which is made uniform in color.

[Prior Art] In order to obtain a good display with a liquid crystal display element, the distance between the upper and lower glass substrates must be maintained uniformly. However, if the glass substrates are thick, the display becomes difficult to see, so normally the distance between the upper and lower glass substrates is kept uniform.
Since the thickness is about m, it is quite difficult to make the spacing between the upper and lower glass substrates uniform, especially when the display area is large.

For this reason, various proposals have been made to make the distance between the upper and lower glass substrates uniform.
Publication No. 9-126351 discloses that a plastic film, glass fiber,
It is described that spacers of a predetermined thickness made of glass beads or the like are interspersed, and even the direction of warp of the glass plate is defined.

[Problems to be Solved by the Invention] However, with only the above-mentioned conventional technology, consideration is not given enough to the pressure bonding of the sealing material during the liquid crystal cell forming operation. As shown in Fig. 3 as a plan view and Fig. 4 as a side sectional view (b-b' line sectional view shown in Fig. 3), on one side the sealing part is wide and extends outward, for example. However, if the sealing part is straight and narrow on the other side, the gap between the glass substrates is narrow in the case where the sealing part is narrow, and the gap is wide on the other side, and the top and bottom are A problem has arisen in that the spacing between the opposing electrodes on the glass substrate is not constant. However, in these figures, 1 is an upper electrode glass substrate, 2 is a lower electrode glass substrate, 3 is a sealing part made of a sealing material, 4 is a sealing part after liquid crystal is sealed, 5 is a liquid crystal, and 6 is a spacer.

According to the present invention, when forming a liquid crystal cell by pressurizing the sealing material placed in the sealing part between the upper and lower glass substrates, the distance between the glass substrates can be made uniform in each part relatively easily, and the display area can be It is an object of the present invention to provide a liquid crystal display element that has uniform operating voltage characteristics over the entire area and can provide good display quality.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a pair of glass substrates having transparent electrodes formed on their inner surfaces are held facing each other at a predetermined distance, and the periphery is covered with a sealing material. In a liquid crystal display element that is sealed by sealing a liquid crystal inside a space sealed with did.

[Function] If the above-mentioned method is adopted, in order to form a liquid crystal cell, a pair of glass substrates with transparent electrodes formed on the inner surfaces are formed, and a sealing material is placed around the liquid crystal cell by, for example, a printing method. Later, when facing each other and applying pressure from both sides so that the distance between the two substrates becomes a predetermined value, the pressure on the encapsulant is applied evenly to each part of the encapsulant, and the encapsulant is evenly pressurized. , the sealing material is crushed to the size of the spacers mixed inside, and the spacing between the glass substrates becomes uniform over the entire surface.

[Embodiment] Fig. 1 is a plan view of an embodiment of the present invention, and Fig. 2 is a side sectional view (a sectional view taken along the line a-a' shown in Fig. 1) of the same embodiment.

The symbols in the figure are the same as in FIGS. 3 and 4. By forming the shape of the sealing part 3 so that it is vertically and horizontally symmetrical (this is point symmetrical with respect to the center point of the area surrounded by the sealing material), the spacer 6 can be formed as shown in FIG. The surrounding sealing material is uniformly diffused, and the gap between the upper and lower electrode substrates is defined by the spacer 6. According to the measurements of this example, the distance between the upper and lower electrodes is ±0.01 over the entire surface.
It was uniform within μm.

[Effects of the Invention] As explained above, according to the present invention, the interval between the upper and lower electrode substrates can be kept at a predetermined constant value with a tolerance of ±0.01 μm or less over the entire display area, and good display quality can be achieved. can get.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a side sectional view of the same embodiment (a sectional view taken along line a-a' in FIG. 1), and FIG. 3 is a plan view of a conventional example. FIG. 4 is a side sectional view (a sectional view taken along the line bb' shown in FIG. 3) of the conventional example. DESCRIPTION OF SYMBOLS 1... Upper electrode glass substrate, 2... Lower electrode glass substrate, 3... Sealing part by sealing material, 4... Liquid crystal enclosure 1, FIG. 3, FIG. 2, FIG. 4

Claims (1)

[Claims] 1. In a liquid crystal display element in which a pair of glass substrates with transparent electrodes formed on their inner surfaces are held facing each other at a predetermined distance, and a liquid crystal is sealed inside a space whose periphery is sealed with a sealing material. 1. A liquid crystal display element, characterized in that the peripheral sealing shape of the sealing material is point symmetrical with respect to the center point of the liquid crystal accommodation area of the glass substrate.