SOURCE DRIVER IC SEPARATED HIGH VOLTAGE POWER GROUND AND LOW VOLTAGE POWER GROUND

• Main Authors: KIM, AN YOUNG, NA, JOON HO, KIM, DAE SEONG, HONG, JU PYO
• Format: Patent
• Language: English; Korean
• Published: 19.08.2010
• Subjects: 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

PURPOSE: A source driver integrated circuit is provided to remove the influence that the noise of a high voltage power ground influences a logic circuit which uses a low voltage power by separating the high voltage power ground from the low voltage power ground. CONSTITUTION: A first power voltage supply line(610) supplies a first power voltage to a high voltage operation circuit part(650). A second power voltage supply line(620) supplies a second power voltage to the high voltage operation circuit part. A third power voltage supply line(630) supplies a third power voltage to a low voltage operation circuit part(660). A forth power voltage supply line(640) supplies a fourth power voltage to the low voltage operation circuit part. The second power voltage supply line and the fourth power voltage supply line are separated from each other.