JPS60159828A - Color liquid crystal display panel - Google Patents

Abstract

PURPOSE:To obtain a color liq. crystal display panel of high quality with high fidelity in color reproduction by setting red, green and blue filters so that the intensities of light passed through the filters are increased in the order of the red, green and blue filters. CONSTITUTION:Red, green and blue filters are provided with the same area, and rotatory polarization and dispersion are corrected in accordance with the spectral form of light passed through each of the filters. The maximum transmittance of spectra is also corrected. When the intensities 19 of light passed through the filters at the time when applied voltage 18 is fixed 24 are represented by IR, IG and IB, that is, 25, 26 and 27, the filters are formed so that the ratio among the maximum values 32, 31 and 30 of spectrum of the red, green and blue filters is represented by IB:IG:IR.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a color separation section and a liquid crystal optical switch. This invention relates to a color liquid crystal display panel manufactured by A, and is particularly related to Pao-Le's optical rotary dispersion compensation method.

[Conventional technology and problems]

Optical rotational dispersion will be explained using a conventional example. FIG. 1 shows a cross-sectional view of a color liquid crystal display panel. 1.6 is the substrate, 2 is twisted nematic liquid crystal ('1''N liquid crystal) 11 is the two substrates 1
．． Seal No. 2, 4, 5, and 6 sealing between the filters 7, 8, 9 are the liquid crystal drive electrodes disposed at positions corresponding to the filters;
16 is a counter electrode of the liquid crystal drive array 4, and 10.12 is an alignment layer for aligning the liquid crystal. The principle of 1il1 is as follows. The panel has electrodes 7- for driving the liquid crystal 1 according to the display peaks and troughs.
By selecting 8.9 and applying a signal, input light 1
Color display is performed by controlling the intensity of the red, green, and blue light obtained by filtering 1 color from 6 to the filter 4.5.6 and shifting it from the output light 17.

The conventional panel has the disadvantage that red is displayed with an emphasis, that is, the display becomes a sepia tone, and the fidelity of the display is significantly reduced. The reason for this is that the angle of optical rotation of light in the liquid crystal cell, and therefore the transmittance of light, depends on the wavelength of light.

The reason for this will be explained with reference to FIG. FIG. 20 shows the dependence of the light intensity of the output light 17 on the applied voltage when a signal is applied to the electrode 7 corresponding to the red filter and red light is transmitted. Horizontal 11+11118 in Figure 2 is the application 'Fh, 2 months, vertical axis 1
9 is the light intensity. In the case of green, it is 21 + 1'y; in the case of color, it is 22. That is, red color is output when the mixed pressure is low and applied, and red color is output when the sieve opening force is 1 and 1 mapped pressure.

In matrix driving using the voltage averaging method, the effective value voltage 24 of the on pixel and the effective value voltage 26 of the off pixel are common to the liquid crystal optical switches corresponding to each color filter. When the effective value voltage 24 of the ON pixel is applied, the red transmitted light intensity is at the intersection 25 of 20 and 24 in FIG. 2, which is greater than point 26 for green and point 27 for blue θ). Similarly, if the image i (i+) looks reddish, there will be some inconvenience.8
Purpose of the Invention] The present invention has been made to eliminate the above-mentioned drawbacks, and the present invention has been made to eliminate the above-mentioned drawbacks.
The objective is to provide a high quality color liquid crystal display panel with high fidelity of color (1) by setting the color filters for each color so that the green filter <T'4 color filter. .

Below is a detailed description of the drawing.

[Embodiments of the invention]

(Example 1) The filter area for each color is equal, and the optical rotation dispersion correction is performed only on the filter using the tail spectrum shape.
,figure. Force 3 Horizontal + lii 28 is wavelength - Vertical 11111
29) is the transmittance. 50 is the spectrum of the red filter - 61 and 62 are the 1. Green, blue filter〇) Spectrum 1, 25.26.27σ) point value in Fig. 2 is set to 1, 1. l, , the spectrum σ) of the red, red, and horoscope filters in Figure 3 is the ratio of maximum weight jQ is ln :l
3. (Example 2) The maximum value of the filter spectrum is equal - filter area and J: and λ・' corresponding to 4' electrode part activity. ’17)
Supplementary IJ: This is the case. An example filter spectrum is shown in FIG. 65 is red fill/11-.

36 kt #A, color filter, filter 7 is the spectrum of the blue filter. Looking at the filter spectrum, the light intensity of each color is set to be approximately equal. The shapes of each filter are shown in Figure 5. Set the area ratio of the red filter () i) - green filter (('i), ?f color filter (B) as Ill: ■L+:lI+, each Lθ of the output light from the color liquid crystal display panel) The energy is
The filter vector is the product of the surfaces a1 of each filter.

Therefore, in the display panel according to this embodiment, the applied voltage lI! of 24 in FIG. 1', the output light of each color is 25 degrees.
26.27 is almost equal, and the optical rotation is 11 points.
It works effectively.

[Effects of the Invention] As stated above, in the present invention ('', color division 1-1 5
(2゜The fidelity of appearance We provide high-quality color lf&, crystal clear color.

[Brief explanation of the drawing]

Figure 1 is a 1-page view of the color liquid crystal display Bobanel. 21M+ is a -1゛ graph showing the dependence of the output light intensity of a conventional non-Norar liquid crystal display panel on opening force 1 and viewing pressure. FIG. 3 shows an example of the transmission spectrum of the colored part (Ki) according to the present invention, and graphs 1, 4, and 5 show the transmission spectrum and vector of other actual MQ examples, and the color part moon arrangement. Fig. 4... Red filter, 5... Wharf filter, 6
・11i filter, 7.8.9--! #/1! IIJK I1TS-10.1
2...Orientation j..., 4.11...i'N liquid crystal, 26
・Off expiration straight peak, pressure, 24... Ono effective value fb, pressure, 65・Red spectrum, 56・Green spectrum, 67・
・ ・-11i spectrum. Figure 1 Figure 2) 7C Figure 4 γ- \ ) 70 Figure 5 i5'''2θ 5 2) 33

Claims (4)

[Claims] (1) A large number of two-dimensional arrays of at least two or more types of color areas with different selected wavelengths, which transmit or reflect by selecting a part of the wavelength of visible light. Separation part old and
In a color liquid crystal display panel consisting of a liquid crystal optical switch provided at a position synchronized with the nuclear color 4Z arrangement position, light energy that is transmitted or reflected from a color member whose selected wavelength is a long wavelength is transmitted or reflected when the selected wavelength is short. A color liquid crystal display panel characterized in that the wavelength of the color part is smaller than the light energy that is transmitted or reflected. (2) The selected wavelengths of the colored part Ad are three types: red, green, and blue, and the transmitted or reflected light energy of the colored part old, or the red part old < the green part old < the evening color part moon. A color liquid crystal display panel according to claim 1, which has a +r+ characteristic. (3) The areas of color members with different selected wavelengths are almost equal,
The maximum value of the transmission or reflection spectrum, or the selected wavelength is a long wavelength color component. 1-Claims No. 1J
The color liquid crystal display panel described in 'I. (4) The transmission or anti-transmission of the colored part where the selected wavelength is different, and the area of the colored part A2 is almost equal, and the area of the colored part A2 where the selected wavelength is the long wavelength is the wavelength of the selected wavelength. Mo θ) The color part is old as 4'4f and the claims 1.1
↓ Color liquid crystal display panel posted by V.