JPS6069685A - Liquid crystal electrode pattern for color 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 [Technical Field] The present invention relates to a novel pattern configuration of a liquid crystal M1 bar that displays color using three color filters and liquid crystal.

[Prior art]

An example of a general display device and a conventional liquid crystal display pattern for color display will be explained with reference to FIGS. 3 and 4. In Figure 3, 11
'' is a display body using liquid crystal. 2 and 3 are transparent substrates with transparent signal electrodes 4 and scanning electrodes 5f, which work together with spacers 7 to sandwich the liquid crystal 6. 8 is a display body using liquid crystal. It is a three-color color filter, and in Figure 3, the three colors are used repeatedly in the signal electrode in the direction perpendicular to the plane of the paper. 9 is a light valve that works together with the reflecting mirror 10; The display body 1 is irradiated with the generated light.

Here, when three color signals are applied to the signal [pole] in synchronization with the sequentially excited scanning voltage 5, a color image is obtained when viewed from the arrow 11 (I).

Next, we will explain the conventional example of scanning 11twL5, signal electrode 4, and distribution of 3-color color filters in Figure 3 using IX 41vl.
, reveal. In addition, throughout all the figures, the same numbers refer to the same means, ■
shall have the same meaning.

In FIG. 4, the signal gL pole, the three color filters 8, and the drive circuit, which are not shown in FIG. 6, are shown in a simplified manner.

15 is a color signal having a circuit operating clock and gradation. Reference numeral 16 denotes a scanning electrode drive circuit that repeatedly excites the scanning electrodes 5 and is connected to an output 16a. 17 [This is a signal electrode drive circuit that outputs an output 17a obtained by time-width modulating a color signal matching the scanning N pole excited in the signal electrode 4.

Each color of the five-color color filter 8 is arranged on the signal electrode 4 in the form of red, green, and blue repeated as R, G, and B. still,
Five color filters 8 are arranged inside the display body 1 (
It may be placed outside the transparent substrate 2 corresponding to the signal N pole.

Furthermore, contrary to FIG.
The arrangement R of the 1c three-color color filter 8 may be arranged in a direction corresponding to the scanning north pole.

In FIG. 4, the dotted line frame 18 indicates R,
Check the color tone and color brightness depending on the duration of G and B lighting.

By the way, in Figure 4, a simple 1-tsubaki pattern is used for Namiyo 1-1.
However, in reality, the number of scanning electrodes is 200 to 440 and the number of signal voltages is 250 x 3 to 640 x 3, making it difficult to manufacture. Therefore, the number of scan electrodes and signal/1 electrodes that move 7 trinox 11+'il, such as M17L, which corresponds to the desired screen size and the number of pixels without difficulty, is determined.

Converting this to color pixel units is between 041 x 04 and 0,8
The area is approximately m x O, 8 mm.

1-7 However, if the color pixel size is on this level, depending on the glaze of the image, the vertical stripes of the five-color color filter arranged in a stripe pattern may become noticeable.

The present invention aims to solve this conventional defect by creating a liquid crystal electrode pattern for color display. [Objective] The purpose of the present invention is to create a new pattern for a liquid crystal electric frame for color display, which can be fully satisfied even in large pixel units. We will propose a pattern configuration of the liquid crystal if pole from which images can be obtained. Another object of the present invention is to provide a liquid crystal display that achieves the above objects without incurring additional cost. l'j 1'! This is a proposal for the i-ban structure.

[144] Part 11121) - Part 2 shows an example of the configuration of a color display liquid crystal barban according to the present invention.

Figure 1 shows four extracted color pixels. The color image half unit is 21a, 21b, :MC, 4 of 21d.
[In section l-2, section 21aKR, section 21b and 21
It corresponds to a filter of dKG and classification 21cVcB. The connection between each pixel of the signal electrode is 2OR with a thick solid line.
It runs at 120G and 20B. These thick fruits a2o
Use materials with low sheet resistance such as rt aluminum and Niacel. This is because transparent 1 taku 4 and 5 usually use tin oxide or indium oxide, so the sheet resistance is thick (Jilt tubes may be unsuitable. This is because if the electrode resistance is high, the time constant due to stray capacitance This is the case when 6 is lost in response to the dog drive signal.

By arranging the electrode pattern and the three color filters in this way, the entire screen becomes noticeable. do not. The size of each color pixel can be determined by sniffing the color image.

In addition, the reason why G is divided into two in the first Uyl, ear 11 is large, and the area is large and 1 loaf is because human visibility is emphasized because the small area of green is small compared to the middle red, and the back. . Therefore, if the visibility of -I multiplied by 1-x falls under the same constraint due to the characteristics of the light source 9, two classifications may be taken so as to emphasize Q+.

Next, an example of the configuration of a liquid crystal military pattern with a color display according to the second invention, which is a modification of FIG. 1, is shown. , l! 14
do. Figure 2 is a modification of the example in Figure 1 to achieve color tone and natural gradation as a whole.
This is an example in which the area of 1c is reduced to a dog, and the sections 21b and 21d are made smaller. In any case, various conditions are determined by integrating the characteristics of the light source, the six-color color filter characteristics 1'l+, and the human color visibility.

〔effect〕

As described above, according to the liquid crystal Wi pattern for color display according to the present invention, the characteristics of three color filters are generated.
C1 Even in large color pixel units, the effect of making clear and natural images is great.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the configuration of a pattern of a color display liquid crystal rod according to the present invention, and FIG. 2 and 5 are cross-sectional views showing the configuration of a general display device, and FIG. 4 is a view showing a liquid crystal electrode pattern for a conventional color display. 2.3...Transparent substrate 4...Signal'M pole 5...Scanning electrode 6...Liquid crystal 8...5 colors In the filter, red color R1 green color is represented by G, and back color is represented by B. 18...Color pixel unit Applicant: Epson Corporation Agent Patent attorney: Tsutomu Mogami

Claims (1)

[Claims] Multiple 8 electric cables and wires placed opposite each other while holding the liquid crystal.
In a display body that is matrix-driven by VS and performs color display in cooperation with three-color color filters, the plurality of scans [one electrode on either one of the poles and the signal line 1 is 3' N, Taku and the above three color filters are made into a color pixel unit, and this color pixel unit is arbitrarily divided into 4 division ratios, and 1 of the % of the color filters of the previous R and these three colors is divided into four. The color filter is a liquid crystal single-pole pattern for color display, in which two diagonally opposing sections of the four sections are arranged to correspond to the W% of the two-color filter/'i1 section of 411).