Drive device for LCD device and LCD device including the same

A liquid crystal display and driving device technology, which is applied to static indicators, instruments, static memory, etc., and can solve problems such as increased gate conduction voltage

Inactive Publication Date: 2008-12-24
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is an idle time between frames in which the clock signal is not generated, and the gate-on voltage increases significantly, so that the gate-on voltage may approach or exceed the limit value of the operating regulation of the gate voltage generator

Method used

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  • Drive device for LCD device and LCD device including the same
  • Drive device for LCD device and LCD device including the same
  • Drive device for LCD device and LCD device including the same

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Embodiment Construction

[0033] The present invention will now be described more fully with reference to the accompanying drawings that illustrate embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals denote like elements throughout.

[0034] It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] It should be understood t...

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PUM

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Abstract

The present invention is related to a driving apparatus for a liquid crystal display, and a liquid crystal display including the same. A gate-on voltage generator includes first and second resistors connected between a predetermined reference voltage and a ground voltage, a voltage follower connected to a contact between the first resistor and the second resistor, a charge pump circuit connected to an output terminal of the voltage follower, and a gate-on voltage output terminal connected to the charge pump circuit. The voltage follower is disposed in front of the charge pump circuit such that an influence due to load changes is blocked to thereby prevent an excessive increase of the gate-on voltage during a blank time. Furthermore, two resistors having the same resistance are used to divide the reference voltage such that stress on the resistors may be minimized.

Description

technical field [0001] The present invention relates to a driving device for a liquid crystal display and a liquid crystal display including the same. Background technique [0002] Recently, flat panel displays such as liquid crystal displays (“LCDs”), organic light emitting displays (“OLEDs”), and plasma display panels (“PDPs”) have been developed as cathode ray tubes (“CRTs”) with large size and weight. CRT") replacement. [0003] A PDP is a device that displays characters or images using plasma generated by gas discharge. OLED is a device that applies an electric field to special light-emitting organic or polymer materials to display characters or images. The LCD is a device that displays an image by applying an electric field to a liquid crystal layer located between two panels and adjusting the intensity of the electric field so as to adjust the transmittance of light passing through the liquid crystal layer. [0004] The LCD includes a panel assembly including pixel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3648G09G3/3677G09G3/3696G09G2310/0286G09G2310/06G09G2330/04G11C19/184G02F1/133
Inventor 南儇佑成焕俊全明河权赫泰朴佼玹
Owner SAMSUNG DISPLAY CO LTD
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