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Drive circuit of display device, rearrangement method, source voltage generator

A technology of high voltage generators and drive circuits, applied in static indicators, instruments, adjusting electric variables, etc.

Active Publication Date: 2012-06-13
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abnormal gate high voltage different from the normal gate high voltage Vgh may cause deterioration of the image quality of the liquid crystal panel 2 (of FIG. 1 )
For example, this abnormally high gate voltage can cause abnormalities such as horizontal stripes on the display

Method used

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  • Drive circuit of display device, rearrangement method, source voltage generator
  • Drive circuit of display device, rearrangement method, source voltage generator
  • Drive circuit of display device, rearrangement method, source voltage generator

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Embodiment Construction

[0023] Figure 4 is a schematic block diagram showing the source voltage generator 14 of the liquid crystal display device according to one embodiment. exist Figure 4Among them, the source voltage generator 30 of a liquid crystal display (LCD) device includes a power control integrated circuit (P-IC) 31, a driving voltage generator 32, a gate high voltage generator 33, a gate low voltage generator 34, a shutdown control device 35 and reset unit 36. The P-IC 31 is of an IC type including a plurality of circuit elements, and generates power supply voltages for a driving voltage generator 32 , a gate high voltage generator 33 , and a gate low voltage generator 34 . The power supply voltage is generated using an external voltage Vcc of about 0V to about 3.3V from an external system (not shown). The P-IC 31 generates a power supply voltage when a dynamic power management (DPM) signal deviated from an off reference voltage of about 0V to about 0.7V is input. In addition, the P-...

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Abstract

Tne invention provides a liquid display device and method for driving same. The display device, such as a liquid crystal display (LCD) includes a driving circuit coupled with a display panel. The driving circuit may have a buildup of static electricity that could degrade the image quality of the display panel. A reset unit may be a part of the driving circuit. The reset unit may power off and power on the display device to dissipate the static electricity without affecting the image quality of the display panel.

Description

technical field [0001] The present invention relates to a liquid crystal display (LCD) device and a method of driving the liquid crystal display device. In particular, the present invention relates to a driving circuit of a liquid crystal display device which may include a reset unit which in turn may reset the driving of the liquid crystal display device. Background technique [0002] With the increase in industrial applications, display devices have become thinner and larger. Among various types of flat panel display (FPD) devices, liquid crystal display (LCD) devices and plasma display panel (PDP) devices are widely used. Due to characteristics such as light weight, easy portability, and low power consumption, LCD devices are widely used as monitors for notebook computers and desktop computers. In particular, active matrix type LCD devices having thin film transistors (TFTs) as switching elements have been researched and developed due to their quality of displaying mov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36
CPCG05F1/46G09G3/3677G09G2330/023G09G2330/06
Inventor 李城珉
Owner LG DISPLAY CO LTD