POWER CIRCUIT FOR LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME

PURPOSE: A power circuit for liquid crystal display device and a liquid crystal display device including the same are provided to reduce the voltage charged in a capacitor by using a gate low voltage as a power voltage. CONSTITUTION: In a power circuit for liquid crystal display device and a liquid...

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Bibliographische Detailangaben
Hauptverfasser:	SON, YONG SEOK, LEE, KWANG HAN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PURPOSE: A power circuit for liquid crystal display device and a liquid crystal display device including the same are provided to reduce the voltage charged in a capacitor by using a gate low voltage as a power voltage. CONSTITUTION: In a power circuit for liquid crystal display device and a liquid crystal display device including the same, a gate wiring and a data line are formed in a liquid crystal panel. A gate driving unit outputs a gate voltage to a gate wiring. The power circuit comprises a charge pump part the input voltage(VIN) dropping an input voltage to output a gate low voltage to the gate driving unit. The charge pump unit includes first and second transistors(T1,T2) which are serially connected between an input terminal and a ground terminal. The charge pump includes first and second diodes which are serially connected between the output terminal of the charge pump and input terminal.