JPS60186823A - Pattern constituting method of liquid crystal display panel - Google Patents

Abstract

PURPOSE:To prevent a liquid crystal display panel being used under a high duty condition at the time of display operation, to finely set the picture element size, and to easily connect the display panel with a control circuit, by constituting unit picture element bodies composed of red, green, and blue to be arranged on the surface of the panel in a quarterly divided form. CONSTITUTION:The picture element of a multicored display liquid crystal panel is constituted of the combination of two scanning electrodes 1 and two signal electrodes 2, and the unit picture element body is divided into four parts. Then four picture elements of one red (R), one green (G), and two blues (B) are combined to one set. Therefore, the number of the scanning electrodes 1 can be reduced and the panel can be driven under a low duty. Moreover, while the number of the signal electrodes 2 and increased, they can be connected easily with a control circuit. In addition, the picture element body becomes smaller and the display panel can be made finely and precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a pattern construction method for a multiplex drive type liquid crystal display panel.

(b) Background of the Technology The present invention relates to a matrix-structured liquid crystal display panel device capable of displaying multicolored characters, etc., and improves the electrode structure, electrode wiring, and connection technique for forming pixel bodies arranged on the panel plane. It is intended to realize a display panel with clear visibility.

(c) Prior Art and Problems In a conventional multicolor liquid crystal display panel, color pixel bodies consisting of red, green, and blue, which constitute a unit pixel, are divided into three equal areas and arranged. The state of pixel division in the display panel is as follows.
An example is shown in FIG.

FIG. 1 shows that a horizontal electrode (scanning electrode) 1 and a vertical electrode (signal electrode) 2 are formed on each pair of glass substrates constituting a matrix, and the intersections of the formed electrodes form color pixels. FIG. 3 is a front view in which red (R), blue (B), and green (G) pixel patterns are formed. In the figure, 3 is a part of the panel surface on which two glass substrates can be assembled.

As shown in the figure, there is a set of R, G, and B pixel patterns.

Three scanning electrodes 1 and one signal electrode 2 that drive the panel
is derived.

FIG. 2 is a front view of the arrangement of R, G and 8 pixel patterns in a matrix configuration similar to the above, but in this case, one scanning electrode 1 and three signal electrodes 2 are used to derive unit pixel drive electrodes. be done.

However, there are three scanning electrodes in Figure 1.

In driving using a general voltage averaging method, when the number of scanning electrodes is large, there is a problem that the ratio between the effective voltage Von applied during pixel lighting and the voltage VolI applied to non-lit pixels in panel display driving cannot be large. be. The voltage ratio Von/Vo
ff is the number of scanning electrodes.

The maximum value is obtained by the following formula.

Von/Voff = (N”+1) V2/ (
NV2-1 ) v2 That is, in the previous equation, as N increases, the voltage ratio decreases and approaches l. On the other hand, the steepness of the threshold of the liquid crystal TL material itself is determined by the saturation voltage Vsat and the threshold voltage Vth.
Currently, Vsat/Vth>1.2.

As a result, the number of scanning electrodes increases and the driving duty becomes high, resulting in problems such as Von/Voff < VsaL/Vth and display contrast deteriorates.

On the other hand, when the two-pixel size is constant, the terminal pinch led out from the scanning electrode becomes small, making connection with the panel control circuit difficult. Also, as shown in Figure 2, even if the number of signal electrodes led out is large, 3° on the signal electrode side.

Similarly to the above, the pitch of the terminals led out from the panel becomes smaller, making it difficult to connect to the control circuit. In order to avoid this, if the terminal pitch of the electrode lead-out is shifted by a large amount, the pixel size of the display increases, causing problems such as the display of characters and symbols etc. increasing.

(d) []Object of the invention The purpose of the present invention is to solve the above-mentioned problems.

Avoiding high-duty driving of electrodes during panel display driving; 11. The object of the present invention is to realize a multicolor liquid crystal panel that maintains fine pixel size and can be easily connected to the control circuit.

(e) Configuration 0 of the invention; J purpose is red arranged in a matrix on the panel surface;
In the configuration of a unit pixel body consisting of green and ■.

This is achieved by making the unit pixel body have a four-division configuration.

(f) Embodiments of the Invention A detailed explanation will be given below with reference to FIG. 3 showing an embodiment of the pixel pattern configuration in a multicolor display panel of the present invention.

According to the present invention, pixels of a multicolor display liquid crystal panel.

It is a combination of two scanning electrodes and two signal electrodes.
− The pixel field is divided into four parts. FIG. 3 is a front view of the panel assembly board showing a pixel pattern configuration divided into four parts.

If a four-division pixel pattern configuration is used, the number of scanning electrodes (1) is reduced to 2/3 compared to FIG. 1, so that the panel can be driven under low duty. b) Although the number of signal electrodes 1 and 2 increases twice, the terminal pitch can be determined within a range that allows easy connection with the control circuit.

Comparing Figure 3 with Figure 2, although the number of scanning electrodes 1 is doubled and the panel signal circuit has a higher duty cycle, the number of signal electrodes 2 is 2/3rds, so 1 displayed character does not become larger. In addition, the pixel body becomes smaller, and one display panel has the advantage of displaying finer details.

The three-color arrangement which is not shown in the embodiment of FIG. 3 and which appears in a pixel body having a 71-square configuration is only one example. It goes without saying that the effect of the present invention will not change in any way even if, for example, the red (R) part and the helmet (B) part are replaced.

(g) Effects of the Invention As described in detail in the embodiments, the electrode structure of the multicolor liquid crystal display panel can be easily connected to a panel drive control circuit in, for example, a p-type nematic liquid crystal display device. . 0
In addition, high-definition multicolor display pixels are formed. Therefore, a display device with a wide range of applications, such as being able to display multi-colored characters in a smaller size, is realized.

[Brief explanation of the drawing]

FIGS. 1 and 2 are front views of a panel showing two sides on which target pixel patterns in a conventional matrix configuration are arranged. FIG. 3 is a front view showing an embodiment of the pattern construction method for a multicolor liquid crystal panel according to the present invention. In the figure, 51 is a scanning electrode, 2 is a signal electrode, and 3 is an assembled display panel substrate. Figure 1 Figure 2 Figure 2 Figure 3

Claims (1)

[Claims] 1. A method for configuring a pattern of a liquid crystal display panel, characterized in that, in a configuration of unit pixel bodies consisting of red, green, and blue pixels arranged in a matrix on a panel surface, the unit pixel bodies are divided into four parts.