Drive circuit and liquid crystal display device

A driving circuit and liquid crystal display panel technology, applied to static indicators, instruments, etc., can solve the problems of large ripple and driving signal ripple, and achieve high current stability and reduce ripple

Active Publication Date: 2017-08-04
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the DCM mode, that is, the inductor current discontinuous mode, in the DCM mode, the ripple of the driving signal LX1 will be very large, resulting in a very large ripple of the output voltage VGH

Method used

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  • Drive circuit and liquid crystal display device
  • Drive circuit and liquid crystal display device
  • Drive circuit and liquid crystal display device

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] It should be noted that the terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" a...

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PUM

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Abstract

The invention discloses a driving circuit and a liquid crystal display device. The drive circuit includes: the anode of the first diode is used for input voltage, the cathode of the first diode is connected to the anode of the second diode, the cathode of the second diode is connected to the anode of the third diode, The cathode of the third diode is connected to the anode of the fourth diode, the cathode of the fourth diode is used for output voltage, the first end of the first capacitor is connected to the first diode, and the second end of the first capacitor is connected to One end of the first resistor, the other end of the first resistor is used to input the first drive signal, one end of the second capacitor is connected to the second diode, the other end of the second capacitor is grounded, and one end of the third capacitor is connected to the third diode tube, the other end of the third capacitor is connected to one end of the second resistor, the other end of the second resistor is used to input the second drive signal, one end of the fourth capacitor is connected to the cathode of the fourth diode, and the other end of the fourth capacitor is grounded . The above driving circuit can reduce the ripple of the output voltage.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a driving circuit and a liquid crystal display device. Background technique [0002] Such as figure 1 As shown, the prior art provides a driving circuit, including a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1, a second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the input voltage source V1. Wherein, the anode of the first diode D1 is used for the input voltage VAA, the cathode of the first diode D1 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the third diode D3. anode, the cathode of the third diode D3 is connected to the anode of the fourth diode D4, the cathode of the fourth diode D4 is used for the output voltage VGH, and the first end of the first capacitor C1 is connected to the first diode D1 and The common end of the second diode D2, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3696G09G3/3648G09G2310/0213
Inventor 张先明
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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