JPH0467623U - - Google Patents

Info

Publication number
JPH0467623U
JPH0467623U JP11035990U JP11035990U JPH0467623U JP H0467623 U JPH0467623 U JP H0467623U JP 11035990 U JP11035990 U JP 11035990U JP 11035990 U JP11035990 U JP 11035990U JP H0467623 U JPH0467623 U JP H0467623U
Authority
JP
Japan
Prior art keywords
signal
circuit
liquid crystal
display device
crystal display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11035990U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP11035990U priority Critical patent/JPH0467623U/ja
Publication of JPH0467623U publication Critical patent/JPH0467623U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Instrument Panels (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る液晶表示装置のバツク照
明制御回路の一実施例を示す回路図、第２図は同
実施例のバツク照明輝度変化例を示す図、第３図
は従来例を示す回路図である。 Ｑ１〜Ｑ３……トランジスタ、Ｒ１〜Ｒ６……
抵抗、Ｃ１……コンデンサ、Ｄ１〜Ｄ３……ダイ
オード、Ａ……コントローラ、Ｂ……バツク照明
用バルブ、Ｋ１……スイツチ、Ｖｂ……バルブ電
源電圧、ＩＬＭ……調光信号。 Fig. 1 is a circuit diagram showing an embodiment of the back lighting control circuit of a liquid crystal display device according to the present invention, Fig. 2 is a diagram showing an example of changes in the back lighting brightness of the same embodiment, and Fig. 3 shows a conventional example. It is a circuit diagram. Q1-Q3...transistor, R1-R6...
Resistor, C1... Capacitor, D1-D3... Diode, A... Controller, B... Bulb for back lighting, K1... Switch, Vb... Bulb power supply voltage, ILM... Dimming signal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] バツク照明付きの車載用液晶表示装置において
、ライトスイツチ信号に応じて照明光源の電源電
圧を切替える電圧切替回路と、調光信号に応じて
デユーテイ制御により照明光源の光量を調節する
調光回路と、警報スイツチに連動し、警報スイツ
チのオン時に前記電圧切替回路に高電圧側への切
替信号を付与するコントローラとを備えたことを
特徴とする液晶表示装置のバツク照明制御回路。 In a vehicle-mounted liquid crystal display device with backlighting, a voltage switching circuit that switches the power supply voltage of the lighting light source in response to a light switch signal, a dimming circuit that adjusts the light amount of the lighting light source by duty control in response to a dimming signal; 1. A back lighting control circuit for a liquid crystal display device, comprising: a controller that is linked to an alarm switch and provides a switching signal to the voltage switching circuit to a high voltage side when the alarm switch is turned on.
JP11035990U 1990-10-22 1990-10-22 Pending JPH0467623U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11035990U JPH0467623U (en) 1990-10-22 1990-10-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11035990U JPH0467623U (en) 1990-10-22 1990-10-22

Publications (1)

Publication Number Publication Date
JPH0467623U true JPH0467623U (en) 1992-06-16

Family

ID=31857684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11035990U Pending JPH0467623U (en) 1990-10-22 1990-10-22

Country Status (1)

Country Link
JP (1) JPH0467623U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606181B2 (en) * 1981-11-06 1985-02-16 ヤマサ醤油株式会社 soy sauce manufacturing method
JPS61275893A (en) * 1985-05-31 1986-12-05 ヤマハ発動機株式会社 Liquid crystal display unit
JPS6432059U (en) * 1987-08-20 1989-02-28

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606181B2 (en) * 1981-11-06 1985-02-16 ヤマサ醤油株式会社 soy sauce manufacturing method
JPS61275893A (en) * 1985-05-31 1986-12-05 ヤマハ発動機株式会社 Liquid crystal display unit
JPS6432059U (en) * 1987-08-20 1989-02-28

Similar Documents

Publication Publication Date Title
JPS592994Y2 (en) Switch operating position and operating status display device
JPH0467623U (en)
JPS585085U (en) Vehicle light emitting diode display circuit
JPS62167466U (en)
JPS6336840Y2 (en)
JPH0353257Y2 (en)
JPS626722U (en)
KR920003492Y1 (en) A circuit regulating a lcd lamp in a radio of a car stereo
JPH0532366Y2 (en)
JPS5995218U (en) Display dimmer
JPH064269Y2 (en) Dimming circuit for automobile instrument
JPH0444626U (en)
JPS6349585U (en)
JPS6159454U (en)
JPH0433131U (en)
JPS61136652U (en)
JPS5984571U (en) display device
JPS6365026U (en)
JPS6339049U (en)
JPH0179098U (en)
JPS5995217U (en) Display dimmer
JPS61148100U (en)
JPH03127387U (en)
JPH0287218U (en)
JPS585086U (en) Display circuit of mode switching device