JPH01133122U

JPH01133122U -

Info

Publication number: JPH01133122U
Application number: JP2920488U
Authority: JP
Priority date: 1988-03-07
Filing date: 1988-03-07
Publication date: 1989-09-11

Description

[Brief explanation of the drawing]

第１図は本考案の原理を示す図、第２図は本考
案の１実施例のブロツク回路図、第３図は同上実
施例の液晶表示部の外観図、第４図は同上実施例
に用いられる可変デユーテイ矩形波発生回路の回
路例図、第５図はエンジン回転数と表示色の関係
を示す特性図、第６図は同上実施例の動作のフロ
ーチヤートである。１……液晶セル、２……照明手段、３……デー
タ記憶手段、４……デユーテイ比決定手段、５…
…可変デユーテイ矩形波発生手段、６……点灯手
段。 Fig. 1 is a diagram showing the principle of the present invention, Fig. 2 is a block circuit diagram of one embodiment of the invention, Fig. 3 is an external view of the liquid crystal display section of the same embodiment, and Fig. 4 is the same as the above embodiment. A circuit example diagram of the variable duty rectangular wave generation circuit used, FIG. 5 is a characteristic diagram showing the relationship between engine speed and display color, and FIG. 6 is a flow chart of the operation of the same embodiment. DESCRIPTION OF SYMBOLS 1...Liquid crystal cell, 2...Illuminating means, 3...Data storage means, 4...Duty ratio determining means, 5...
... Variable duty square wave generating means, 6... Lighting means.

Claims

[Claims for Utility Model Registration] In a liquid crystal display device in which predetermined input information is displayed on a transmissive or reflective/transmissive liquid crystal cell using digital numbers or a predetermined pattern, An illumination means consisting of a plurality of different lamps is arranged, and each duty ratio of a rectangular wave pulse to be applied to each lamp of the illumination means is provided to obtain an illumination light color corresponding to the signal strength of input information to be displayed in color. a data storage means that stores in advance as a data table; and a data storage means that reads the input information to be displayed in color and stores the duty ratio of a rectangular wave pulse of each lamp of the illumination means corresponding to the signal strength of the read input information. duty ratio determining means for selecting and outputting from a data table of the means; variable duty rectangular wave generating means for generating rectangular wave pulses each having a duty ratio selected by the duty ratio determining means; and the variable duty rectangular wave. and lighting means for applying a rectangular wave pulse having each duty ratio generated by the generating means to each corresponding lamp of the illumination means, and controlling lighting of each lamp at a light intensity according to each duty ratio. A liquid crystal display device featuring: