JPS59109028A - Liquid crystal display device for full color display - Google Patents

Abstract

PURPOSE:To obtain a titled device that can display any color by mixing of three primary colors and gives good color tone by arranging minute lenticular lenses for groups consisting of picture elements of three primary colors provided on transparent electrodes. CONSTITUTION:A twist nematic liquid crystal 6 is sealed between an upper glass substrate 1 provided with a group 2 of transparent electrodes and a group of color filters (5a denotes a red filter, 5b denotes a green filter and 5c denotes a blue filter) and a lower glass base plate 3 provided with a group 4 of transparent electrodes. Polarizing plates 7, 7 are placed on the two glass substrates 1, 3, and a lenticular lens plate 9 is provided on the upper polarizing plate 7. Each lenticular lens 8 is made to correspond to each element consisting of three primary colors of color filters. Accordingly, by applying voltage selectively between upper and lower electrodes of the device, a desired color display of good color tone can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a liquid crystal display device for full-color display in which color filters of three primary colors, red, green, and blue, are alternately arranged on a transparent electrode.

<Prior Art> Conventionally, a full-color liquid crystal display device has been proposed in which color filters for the three primary colors of red, green, and blue are incorporated into a liquid crystal layer to display an arbitrary color by mixing the three primary colors. However, conventional full-color LCD display devices control the amount of transmitted or reflected light from each pixel of the three primary colors, allowing the eye to synthesize and recognize any color. It did not create pixels.

OBJECTIVES> An object of the present invention is to synthesize pixels of three primary colors by incorporating relatively compact optical components, and thereby obtain a full-color display with excellent color tone.

<Example> Hereinafter, an example of a liquid crystal display device for full color display according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory diagram of the configuration of an embodiment of a liquid crystal display device for full color display according to the present invention. 1 is the upper glass substrate, 2
3 is a group of transparent electrodes formed on the upper glass substrate 1.
4 is a transparent electrode group formed on the lower glass substrate 3 surface, and 5 is a color filter group formed on the transparent electrode group 2. In FIG. The color filter group 5 is composed of a red filter 5a, a green filter 5b, and a blue filter 5c. These color filter groups 5 are printed using methods such as photo process, screen printing, and pad printing.
It is formed to have a thickness of about 1 to 03 μm.

Lower glass substrate 3 on which transparent electrode group 4 is formed. An alignment film is coated on the side glass substrate l on which the transparent electrode group 2 and the color filter group 5 are formed, and both glass substrates 1
, 3, the spacing is maintained at about 10 μin. A nematic liquid crystal 6 having a control surface structure twisted by 90 degrees is interposed in the gap. -1 Polarizing plates 7, 7 are arranged on the front surface of the second glass substrate 1 and the back surface of the lower glass substrate 3. On the negative side of the polarizing plate 7 of the upper glass substrate 1, minute lenticular lenses 8 are formed at respective positions covering three color pixels formed by a red filter 5a, a green filter 5b, and a blue filter 5c. A lenticular lens plate 9 is arranged. The lenticular lens 8 is one in which one lenticular lens is positioned corresponding to an element composed of three color filters. Therefore, the size and period of each lenticular lens 8 are formed to match the size and period of the filter 5 so as to cover at least one set of three primary color filters. - The lenticular lens plate 9 can be formed by compression molding of acrylic resin.

FIG. 2 shows an example of the correspondence between the lenticular lens plate 9 and the group 5 of color filters. The size of a single color pixel is 0.25 mm x 0.8 mm, 11 in the same figure is 1.0 tone, 12 is 0.5 I++++Iv l 3 is 0.25 m
m, 14 is 0.05++m.

In a full-color liquid crystal display device with the structure shown below, when no voltage is applied between the upper and lower electrodes, the display is black, and when all the voltages are at the saturation voltage, the display is white (colorless), and each color filter When appropriate different voltages are applied to the corresponding electrodes, the desired color will be displayed. Here, in the second embodiment, the liquid crystal mode is TN-FEM*, but other liquid crystal modes such as guest host may be used. Further, the shape of the lenticular lens may be semi-spherical or semi-ellipsoidal depending on the shape of the color filter. By applying the above liquid crystal display device for full color display, a color liquid crystal television, a full color level meter, and a full color liquid crystal printer can be realized.

<Effects> According to the present invention, any color obtained by mixing three primary colors can be displayed, and a display device with good color tone can be obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the configuration of an embodiment of a liquid crystal display device for full color display according to the present invention, and FIG. 2 is an explanatory diagram showing an example of the correspondence between a lenticular lens plate 9 and a color filter group 5. . In the figure, l neat side glass substrate 2: transparent electrode group 3: lower glass substrate 4: transparent electrode group 5: color filter group 6: nematic liquid crystal 7: polarizing plate 8: lenticular lens 9: lenticular lens plate Fig. 2

Claims (1)

[Claims] A liquid crystal layer is arranged between 12 substrates, a transparent electrode is formed on the surface of at least one of the two substrates, and on the transparent electrode, three primary colors of red, green, and blue are arranged. In a full-color liquid crystal display device in which color filters are alternately arranged in parallel, the red and green colors of the substrate. A liquid crystal display device for full-color display, characterized in that a minute lenticular lens is arranged at a position covering three pixels formed by a blue color filter.