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Circuit voltage stabilizer of liquid crystal display screen

A technology of liquid crystal display and voltage stabilizer, applied in static indicators, instruments, etc., can solve the problems of high cost, complicated circuit connection, unstable voltage, etc., and achieve the advantages of reduced production cost, simple circuit connection and stable output voltage. Effect

Inactive Publication Date: 2017-01-18
HEFEI HUIKE JINYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

VGL = -10 volts, AVDD = 10 volts, the circuit connection of the driving and stabilizing circuit of the existing liquid crystal display module is complicated, and the output voltage is unstable, and another stabilizing power supply is needed to cooperate, which makes the cost higher

Method used

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  • Circuit voltage stabilizer of liquid crystal display screen

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Embodiment Construction

[0012] 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.

[0013] refer to figure 1 , a liquid crystal display circuit voltage stabilizing device, which includes a housing, a voltage stabilizing circuit, and a conversion circuit, the housing is provided with a voltage stabilizing circuit and a switching circuit, and one end of the voltage stabilizing circuit is connected to an AC power supply and the other end is connected to a conversion circuit , the voltage stabilizing circuit includes a chip U1 and a component U2, the pin 5 of the chip U1 is connected with a resistor R4, an inductor L1, a capacitor C6 and a high-level VCC, and the other end of the resistor R4 is connected with the pin 4 of the chip U1, The other end of c...

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Abstract

A circuit voltage stabilizer of a liquid crystal display screen comprises a casing, a voltage stabilizing circuit and a converting circuit. A pin 5 of a chip U1 of the voltage stabilizing circuit is connected with a resistor R4, an inductor L1, a capacitor C6 and a high level VCC, the other end of the resistor R4 is connected with a pin 4 of the chip U1, the other end of the capacitor C6 and a pin 2 of the chip U1 are grounded, a pin 1 of the chip U1 is connected with the other end of the inductor L1, the anode of a diode D4 and a capacitor C2, the other end of the capacitor C2 is connected with the cathode of a diode D2 and the anode of a diode D1, the anode of the diode D2 is connected with a resistor R3, the other end of the resistor R3 is grounded, and the cathode of the diode D1 is connected with the capacitor C1, a resistor R1 and the emitter of an NPN type triode Q1. According to the invention, circuit connection is simple, the voltage stabilizer is economical and practical, the voltage output by a driving voltage stabilizing circuit of a liquid crystal display module is stable, and the production cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of driving voltage stabilizing circuits, in particular to a liquid crystal display circuit voltage stabilizing device. Background technique [0002] With the advancement of liquid crystal display technology, liquid crystal displays are more and more widely used in people's daily life, and the driving of liquid crystal displays is an indispensable part of liquid crystal display applications. Cost and profit are the two eternal themes that merchants care about. The input voltage of the driving and stabilizing circuit of the liquid crystal display module is 3.3 volts, and the output voltage is VGH=15 volts. VGL = -10 volts, AVDD = 10 volts, the circuit connection of the driving and stabilizing circuit of the existing liquid crystal display module is complicated, and the output voltage is unstable, and another stabilizing power supply is needed to cooperate, which makes the cost higher. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3696G09G2330/02
Inventor 白航空
Owner HEFEI HUIKE JINYANG TECH
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