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Driving circuit

A technology for driving circuits and resistors, applied to instruments, static indicators, etc., can solve problems such as voltage drop, abnormal output of level shifters, etc.

Active Publication Date: 2019-01-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the rise time of the gate high voltage VGH is too fast, that is, the voltage of the gate high voltage VGH has not yet reached the correct voltage, so that the voltage output to the UVLO module will drop, resulting in an abnormal output of the level shifter

Method used

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Embodiment Construction

[0021] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0022] Please refer to figure 1 Shown is a schematic diagram of a preferred embodiment of the driving circuit of the present invention. The drive circuit includes a linear regulator 2, an amplifier module 3, a comparator module 4, and a delay module 5. The present invention will describe in detail the d...

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PUM

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Abstract

The invention discloses a driving circuit. The driving circuit comprises a linear regulator, an amplifier module, a comparator module and a delay module; when a stable voltage received by the input end of the delay module is lower than a set voltage, a voltage comparator of the comparator module is turned off; and if the stable voltage received by the input end of the delay module is higher than or equal to the set voltage, the voltage comparator is turned on, and therefore, the output abnormality of a level shifter can be avoided.

Description

technical field [0001] The present invention relates to a driving circuit, in particular to a driving circuit applied to a level shifter. Background technique [0002] An active matrix liquid crystal display includes a thin film transistor (TFT) as a switching element in each pixel. Active matrix liquid crystal displays can be manufactured smaller than cathode ray tubes (CRTs), and thus can be applied to display units of portable information equipment, office equipment, computers, and the like. In addition, active-matrix liquid crystal displays can be applied to television sets and thus quickly replace cathode ray tubes. [0003] The liquid crystal display includes a liquid crystal display panel, a backlight unit for supplying light to the liquid crystal display panel, a data drive circuit for supplying data voltages to the data lines of the liquid crystal display panel, and a data driving circuit for supplying gate pulses (ie scan pulses) to the liquid crystal display A g...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3677G09G2310/0291
Inventor 李文芳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD