To provide a driving circuit for a liquid crystal display unit in which the occurrence of a noise is suppressed.SOLUTION: A driving circuit for a liquid crystal display unit includes: a liquid crystal display unit 1 including a first light source group 11 in which a plurality of light sources are connected in series between a first input terminal 11a and a first output terminal 11b, and a second light source group 12 which is provided separate from the first light source group 11 and in which a plurality of light sources are connected in series between a second input terminal 12a and a second output terminal 12b; a constant-current control circuit 21 that is connected to the first input terminal 11a side through a first wire 2a and supplies a driving power to the first light source group 11; and a relay wire 2c that connects between the first output terminal 11b and the second input terminal 12a and supplies driving power to the second light source group 12.SELECTED DRAWING: Figure 3

    【課題】ノイズの発生を抑制した液晶表示ユニットの駆動回路を提供する。【解決手段】第1の入力端子11aと第1の出力端子11bとの間に複数の光源が直列に接続された第1の光源群11と、この第1の光源群11と別に設けられ、第2の入力端子12aと第2の出力端子12bとの間に複数の光源が直列に接続された第2の光源群12と、を設ける液晶表示ユニット1と、第1の入力端子11a側に第1の配線2aを介して接続し、第1の光源群11へ駆動電力を供給する定電流制御回路21と、を備え、第1の出力端子11bと第2の入力端子12aとを接続し、第2の光源群12へ駆動電力を供給する中継配線2cを有する。【選択図】図3


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    Title :

    DRIVING CIRCUIT FOR LIQUID CRYSTAL DISPLAY UNIT


    Additional title:

    液晶表示ユニットの駆動回路


    Contributors:

    Publication date :

    2024-06-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION / H05B ELECTRIC HEATING , Elektrische Heizung



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