JPH10104567A - Color liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make possible a multi-color display by an inexpensive binary displaying controller without using an expensive gradation displaying controller by providing a resistance body between a liquid crystal driving IC output terminal and a liquid crystal panel signal input terminal and controlling a size of an electric field applied to a liquid crystal. SOLUTION: A liquid crystal panel 1 having a birefringent characteristic is provided with icon display parts 2, 3 as its display part and a character display part 4 constituted in matrix. Further, the liquid crystal panel 1 is provided with an input terminal part 5, and a signal outputted from the binary display controller 11 is inputted to the input terminal part 5 through a driving driver. At this time, resistance chips 8, 9 are attached to common lines 6, 7 for the icon display parts 2, 3 outputted from the common side output terminal of the driver 10 for the liquid crystal panel for respectively controlling an electric field to the size of the electric field required for coloring by the birefringent characteristic of the liquid crystal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color liquid crystal display device used for telephones, portable devices and the like.

[0002]

2. Description of the Related Art In a conventional liquid crystal display device, a controller IC for gray scale display is used to control the magnitude of an electric field to perform multicolor display.

[0003]

However, the conventional structure having a controller IC for gray scale display has a problem that a color liquid crystal display device is expensive and an interface different from a normal binary display is required. there were.

[0004]

According to the present invention, a resistor is provided between an output terminal of an IC for a liquid crystal display device and a signal input terminal of a liquid crystal panel to control the magnitude of an electric field, thereby providing coloring. . With such a structure, it is possible to realize multicolor display at the same price as a normal binary display liquid crystal device.

[0005]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a configuration of a color liquid crystal display device of the present invention. The liquid crystal panel 1 having birefringence characteristics includes icon displays 2 and 3 as its display units and a character display unit 4 configured in a matrix. The liquid crystal panel 1 has an input terminal unit 5,
The signal output from the binary display controller 11 is input to the input terminal 5 through the driving driver. Here, the common lines 6 and 7 for the icon display portion output from the common side output terminal of the liquid crystal panel driver 10 include:
Resistor chips 8 and 9 are attached to control the electric field to the magnitude of the electric field required for coloring by the birefringence characteristics of the liquid crystal, respectively. The resistance value differs depending on the optical design of the liquid crystal panel used and the color to be colored. 33K in this embodiment
A resistance chip 8 of Ω and a resistance chip 9 of 17 KΩ were used. When the liquid crystal display device having such a structure is driven for binary display, as shown in the CIE chromaticity diagram of FIG.
Is green (12 in FIG. 2), icon display 3 is pink (13 in FIG. 2), and character display 4 is blue (1 in FIG. 2).
4) was displayed. In the present embodiment, such colors are displayed, but the colors to be colored differ depending on the optical design of the liquid crystal panel and the magnitude of the electric field to be selected.

The resistor may be provided anywhere between the driver IC and the display section of the panel, and may be provided on a substrate on which the driver IC or the like is mounted or on a substrate of the display panel. Alternatively, the same effect can be obtained even if a resistor is formed on the wiring inside the display panel.

[0007]

As described above, according to the present invention, the magnitude of the electric field is controlled by attaching a resistor between the output terminal of the liquid crystal driving IC and the signal input terminal of the liquid crystal panel, thereby enabling the multiplication of the liquid crystal. Coloring is performed according to the refraction characteristics. By using such a structure, a controller and an interface that perform a normal binary display can be used.
A multi-color display device can be realized at the same price as a binary display liquid crystal device.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a color liquid crystal display device of the present invention.

FIG. 2 is a CIE chromaticity diagram showing a display chromaticity according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2, 3 Icon display part 4 Character display part 5 Signal input terminal 6 Common line connecting icon display part 2 and driver IC 7 Common line connecting icon display part 3 and driver IC 8, 9 Resistor 10 Driver IC 11 Binary display controller

Claims (3)

[Claims] 1. A color liquid crystal display device in which birefringence characteristics of a liquid crystal are controlled by means for controlling the magnitude of an electric field to display a multi-color image. 2. The color liquid crystal display according to claim 1, wherein the means for controlling the magnitude of the electric field is a resistor provided between the liquid crystal driving IC output terminal and the liquid crystal panel signal input terminal. apparatus. 3. The color liquid crystal display device according to claim 2, wherein a multi-color display is performed by setting a resistance value of the resistor for each terminal.