JPS58120287A - Liquid crystal display - 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 Field of the Invention The present invention relates to a liquid crystal display device for multi-color ibaraki in which a color display panel is incorporated into a liquid crystal display panel.

Technical background of the invention; Pi° [6M9. ÷ Conventional full-color liquid crystal displays (ha) are made by stacking three layers of monochrome dust host liquid crystal display devices, and each layer is mixed with a different dye. It is being That is, as shown in Figure 1, 3kF) quasi a+)'t, t31 z 3m e 3
s fjf Laser M 1 Hold between s to 14, and show electrodes 21 to 26 in a sleeve shape with opposing electrodes in each layer.
The color of the book was then displayed using subtractive color mixing. However, with this method, the color of the light is large because it is multi-layered, and the cells are thick due to the multi-layered structure. This caused color shifts to appear in the field of vision, making it look 714% worse.

On the other hand, a method has been proposed in which pixels of three primary colors are arranged in one layer of cells as a cell structure for color coatings with a wide field of view in principle. This causes the three primary colors to oscillate within the same space, and in the same way as color CRT (shade mb'irJ) separates the phosphors of the three primary colors, three primary colors are applied to the display electrode part of the liquid crystal cell. In the case of a color CRT, an electron beam is used to make the phosphor emit light.In the case of a color CRT, an electron beam is used to make the phosphor emit light, and in a liquid crystal cell, the transmitted or reflected light is seen through a color filter. For example, if a mixture of black dye (dust material) and liquid crystal (host material) is used, the cell thickness will be
By enclosing the pixel at 10/m and controlling the light transmission of the pixel by applying a voltage to the display electrode corresponding to each light, any color can be displayed. As shown in FIG. 2, this structure consists of a pair of glass substrates 11'1,11. A plurality of transparent strip-shaped display electrodes Jt#12*e are arranged perpendicularly to each other.
12x and display 1 on one substrate 112! On the next surface of the L pole, a filter 13R9, an edge filter 13G, and a positive film 13B are repeatedly attached in this order to match the shape of the electrode.

This filter is made of materials such as gelatin filters, PVA (polyvinyl Φ alcohol) filters, and instant ink.

However, in this method, since the color filter is in direct contact with the operating area of the liquid crystal and the Garst host type liquid crystal 14, the liquid crystal and the color filter may react or the liquid crystal layer 7 to lO
There are disadvantages such as the layer color density being dissolved because the color filter is thin enough compared to the μm thickness to absorb the liquid, and furthermore, it is difficult to provide a liquid crystal molecule alignment bed that controls the alignment of the dust host type liquid crystal. The present invention solves the above-mentioned conventional drawbacks, avoids direct contact between the wide viewing angle liquid crystal and the color filter, and further provides good spectral characteristics to enable good multicolor display. The Company provides liquid crystal display devices with

Overview of the Invention Is the present invention one-layer? &Improved the display shown in Figure 2 for color display using a crystal dove, and changed the electrode substrate on which the color filters are installed to face up with each color filter embedded in the western part of the substrate, and created a substrate with color filters embedded. It is constructed by disposing transparent display IT poles corresponding to each color filter film through a transparent plate on the front surface.

Kabutocho effect According to the present invention, liquid crystal materials and color filters can be directly connected! Since there is no contact between the two and therefore there is no deterioration of the liquid crystal material due to a reaction between the two, a long-life liquid crystal display device can be realized. Furthermore, since the color filters are covered with a transparent layer, the liquid crystal alignment process can be performed without impairing the characteristics of the color filters. Historically, the display electrodes and color filters have been separated,
It is possible to select a wide range of conditions, such as material selection for each color filter, coloring performance setting, etc., and it is possible to perform an attractive multicolor display.

Example of invention A cross-section of a part of an embodiment of the present invention is shown in FIG. 3.

On one layer of the transparent thin plate 21 are a band-shaped color filter Ax dyed in different colors by a known method: a band-shaped color filter/membrane 22G dyed green and a band-shaped color filter 1 Each color filter group 12B is formed in a predetermined position and with a predetermined size. In this case, each color filter *zx
R, tza.

22B is formed to have spectral transmittance characteristics as shown in R (red), G (red), and B (positive) in Figure 4.

A metal film such as a chromium film is disposed in the gap between each color filter group as an optically black opaque film 23. A transparent fluorescent display %L constant 251 is disposed on the entire surface of the substrate via a transparent film 24 at a position corresponding to each color filter film 22R122G, 211B. Transparent 2
4 is shi u ttxs * or snow arm, taho limb, and for me, 1000 to 50001 is good.

Moreover, as this transparent film 24, 100 to 500μvI@'F
; JL's glass film may be used as a shielding material and may be attached using a transparent epoxy resin material.On the other hand, on the opposing transparent substrate 21, there are several wires perpendicular to the bottom display '#IIL pole 261. A normal state display circuit 253 is formed, and both phase display 'kL poles 25! of these opposing substrates are formed. and 25 m to form a matrix, and the intersections thereof are used as display pixels. This liquid crystal cell is filled with a dust/hot liquid crystal 26 for black display, which is a mixture of black dye and liquid crystal, for example, and the pixel's light transmittance is returned by a voltage applied to the display electrode corresponding to each pixel. Control the light-reflecting children. Three color filter films 22R, 22G of red, edge, and 'v that match these pixels are removed.
, 22B, the transmission bar of each pixel is controlled so that the display color of 'F'JrWi is the result of combining the transmitted light spectrum or the reflected light spectrum from 22B. For example, voltage O
V against 14. The light transmission award of the filter is zero and the voltage is 4.
The amount of light transmitted is maximum at V (saturation o11n), and the transmission spectrum of the compatible filter can be transmitted as is.

The effects of this implementation and the results of the prior art are as follows.

■ The color filter is housed inside the substrate without coming into contact with the liquid crystal material, and it can be used for display purposes as an internal kite.
m251 and color filter films 22R, 22G, and 22B are separated.

As a result, the reduction of the liquid crystal material caused by the color 7-elta, that is, the increase in the cell current value during continuous operation, is reduced, and the cell preposition is increased.

■ Material selection for each color filter, gradual color mi'#ii, as shown in Figure 3, separates the water electrode and color filter, allowing a wide range of designs and obtaining sufficient optical inertia for color marking. It's a blessing.

■ Orientation of liquid crystal molecules Jli1 is possible on transparent *J4, which is unrelated to color filters.For this purpose, select an alignment treatment that matches the characteristics of the liquid crystal material, such as oblique evaporation alignment or rubbing alignment treatment. As a result, the contrast ratio of the display panel and the response characteristics during switching can be improved.

■Also, each color filter film z2R, 22G.

An opaque IM2B is provided in the gap between the filters 22B and 22B to prevent sources entering from an oblique direction from passing through the non-filtered portion.

Then, three each color filter family 22R, 22G, 22B
This eliminates the problem of combining the transmitted light from each other to display the desired color. - power, this opacity jlIxx each color filter m2in.

By blacking out the color separation between xxG and xxB, it is made clearer and the contrast ratio of the display/1 channel can be improved in a negative manner.

■ Compared to the method of sloping each color filter on the back side of the substrate 211 that constitutes the cells in the nest, the present invention reduces the amount of soft water by 11 Lm J
5 t K Contacting liquid crystal 26 and filter M22R, 22
It is clear that since the distance between G and 22B is close, the viewing angle when observing the pixel electrode portion through the color filter is expanded.

In the above embodiment, a gold Jll film was formed as an opaque area between each color filter, but '! The example shown in FIG. 385 is the ordinary filter membrane 22R.

Even if 22G and 22B are used as a set of three, and the opaque group 23 of good luck is formed on the mother of the three, young fruits with the same % Q (similar to that of the above example) can be obtained. The lead is pulled out to the outside as a pocket.
S-) A cell is constructed using an active matrix substrate using a Si wafer on which a transistor array is assembled, or a switching array substrate using a transparent glass substrate on which a switching element array such as UTPT is integrated. 4. It is clear that the same effect can be achieved.

[Brief explanation of the drawing]

Fig. 1 and navy blue 2-1 are a front view of a conventional multi-t1 display liquid crystal display device; FIG. 4 is a diagram showing the optical characteristics of the color filter shown in FIG. 3, and FIG. 5 is a front view of the color filter board shown in FIG. 211.21! ...Transparent substrate, 22Ft,! 2G. 22B... Color filter film, 23... Opaque group, 24
...Transparent film, 25. ．． 25s... Imperial status display corner, 2
6...Dust host shop LCD. Representative Patent Attorney Takeshi Suzue 11m 11 Figure 2 Figure 39! ! 1. 4 chart length (nm)

Claims (2)

[Claims] (1) Liquid crystal mixed with dichroic dye is held between two electrode substrates, and color filters of several colors for color display are co-coated on one electrode substrate, corresponding to both display systems. , in a liquid crystal display device that performs a two-dimensional display by controlling the voltage between opposing electrodes and selectively increasing the light transmission rate.
For the electrode substrate on the side where the color filters are removed, color filter groups are arranged on a predetermined substrate in correspondence with the Tani-Rokufu pattern, and a transparent surface layer is placed on top of the color filter groups in correspondence with each color filter group via a transparent group. A liquid crystal display device that resembles a structure in which electricity is arranged. (2) The range of the special ice visit that makes opaque clothing appear at the boundary of the color filter group that comes in instant contact with the liquid crystal table small 11 described in item 1.