JPS6151124A - Liquid crystal display device - Google Patents

Abstract

PURPOSE:To obtain a display which has a visual field angle in >=3 directions by providing >=3 display patterns to an upper and a lower substrate, making orientation directions of the display patterns on at least one substrate difference according to >=3 visual field angles, and arrangin a polarizing plate which provides polarization in the same directin as the orientation direction. CONSTITUTION:An oriented film is formed on display patters 1a-1c on the two upper and lower substrates 2 and 3. The display patterns on the upper substrate 2 are rubbed by a mask method as shown by arrows H. J, and L the display patterns on the lowr substrate 3 are also rubbed as shonwn by arrows I, K, and M to orient liquid crystal. Then, TN liquid crystal is charged between the substrates 2 and 3 to form a liquid crystal panel 1. Polarizing plates 4 and 4' are arranged on and under the panel 1 by boring a window in only an unnecessary display pattern so that polarization directions O-Q and O'-Q' coincide with orientation directions H, J, and L, and I, K, and M of the display pattersn 1a-1c. Thus, such a display that the pattern 1a has a visula field angle in a direction A, the pattern 1b has a visual field angle in a direction B, and the pattern 1c has a visual field angle in a direction C is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid crystal display device that can be used for displaying viewing angles in different directions within the same panel.

Conventional configurations and their problems Recently, liquid crystal display devices, which take advantage of their features such as thinness, light weight, and low power consumption, are being applied to fields such as calculators, various watches, counter display boards, and game devices. . Moreover, as the liquid crystal used in these, nematic liquid crystal (hereinafter referred to as TN type liquid crystal) having positive dielectric anisotropy is mainstream.

Conventionally, in TN type liquid crystal display panels, the liquid crystal is aligned in the same direction for all display patterns on the same substrate, so viewing angle dependence is strong, and display from different viewing angles is difficult. Due to problems such as low contrast and poor display quality, the viewer's viewing angle was limited to a single direction.

OBJECTS OF THE INVENTION The present invention has been made in view of such conventional problems, and it is possible to obtain a display having viewing angles in three or more directions within the same liquid crystal panel. - It is an object of the present invention to provide a liquid crystal display device that can perform the following.

Structure of the Invention In order to achieve this object, the liquid crystal display device of the present invention is provided with three or more display patterns on the same plane on the upper and lower substrates, and an alignment process for the display patterns on at least one of the substrates. The direction is different depending on the viewing angle of three or more directions, and polarizing plates with polarization in the same direction as those orientation directions are arranged on the upper and lower substrates, and three types Different display patterns can be viewed from different directions.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.

First, a liquid crystal alignment film is provided on display patterns 1a, 1b, and Ia provided on two upper and lower substrates 2.3. Next, this alignment film is rubbed in the directions of arrows H, T, and L for the display pattern of the upper substrate 2, and in the direction of arrows I and M for the display pattern of the lower substrate 3, thereby performing liquid crystal alignment. On this occasion,
Arrow H, T.

Since the alignment directions are different from each other in the L direction or arrow I, and the M direction, anisotropic alignment processing can be performed by rubbing through a mask having windows only in desired alignment regions.

The two substrates 2.3 thus obtained are pasted together with a 7-l resin and cured by heat, and then TN type liquid crystal is sealed to produce the liquid crystal panel 1.

Next, polarizing plates 4.4'' are placed above and below the liquid crystal panel 1 in polarization directions 0, P, Q and O', P', Q.
' The display pattern 1a of the upper and lower substrates 2.3,
1b.

In the liquid crystal display device of the present invention, polarizing plates 4.4' with windows formed by press punching only for unnecessary display patterns are arranged in the liquid crystal orientation directions H, J, L, and I of 1C so that they are aligned in the same direction in M. The purpose of this is to create a .

By the way, according to the liquid crystal orientation direction of this embodiment, the viewer's viewing angle is as shown in FIG. 2: the display pattern 1a is in the A direction, the display pattern 1b is in the B direction, and the display pattern 1C is in the C
direction.

On the other hand, the directions of the three viewing angles of the liquid crystal display panel are not limited to those in this embodiment, and the directions of the three viewing angles are based on the orientation direction of each display pattern and the polarization direction of the polarizing plate corresponding to the orientation direction of each display pattern. Three viewing directions relative to the panel can be created in any direction as long as they are in the same direction. Further, by setting the liquid crystal orientation direction of each display pattern to the orientation treatment direction of the display pattern on at least one substrate, a display with different viewing angles within the same substrate can be obtained.

Furthermore, the viewing angle directions on the same substrate are not limited to three types as shown in this embodiment, but there are four or more display patterns on the same plane, and the display patterns on at least one substrate are different from each other. The direction of the orientation treatment is made different depending on the viewing angle in four or more directions, and furthermore, polarizing plates having polarization in the same direction as the orientation direction of the display patterns are produced and arranged on the upper and lower substrates by the press punching method. In this way, a liquid crystal display device having viewing angles in four or more directions can be obtained on the same substrate according to the present invention.

Effects of the Invention As described above, according to the present invention, it is possible to provide a liquid crystal display device that can provide display having viewing angles in three or more directions within the same liquid crystal display panel.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a liquid crystal display device according to an embodiment of the present invention, and FIG. 2 is a plan view showing viewing angles of the liquid crystal display device according to the present invention. 1...Liquid crystal display panel, 1a, 1b, 1c...
...Display pattern, 2, 3...Substrate, 4.
4'...Polarizing plate.

Claims (1)

[Claims] Display patterns are provided on the upper and lower substrates so that three or more display patterns exist in the same plane, and the directions of orientation treatment of the display patterns on at least one of the substrates are made to be different depending on viewing angles in three or more directions, and A liquid crystal display device characterized in that polarizing plates having polarization in the same direction as the orientation direction of the upper and lower substrates are arranged on the upper and lower substrates.