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Static LED display screen driving circuit

A technology of LED display screen and driving circuit, which is applied in the direction of static indicators, instruments, etc., can solve problems such as dead spots or screen flickering, static LED display interference, etc., and achieve the goal of reducing dead spot rate, low cost, and cost reduction Effect

Inactive Publication Date: 2015-11-18
SUZHOU HEXINMEI ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a static LED display drive circuit, which solves the problem of dead spots or screen flashes caused by interference in the static LED display in the prior art

Method used

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, structure and working process of the present invention will be further described.

[0026] Such as figure 1 As shown, a static LED display driver circuit includes LED lights and driver chips. Three driver chips and three groups of LED lights form a display unit. Each driver chip drives a group of LED lights, and the three groups of LED lights are respectively one A group of red LED lights, a group of green LED lights, a group of blue LED lights, each signal output pin of the driver chip is connected to an LED light, and a resistor is connected in series between the red LED lights and the power supply, and three driver chips connected in series in turn, further comprising a filter circuit, the filter circuit includes a power filter circuit and a signal filter circuit, wherein the power filter circuit includes at least three capacitors with different capacitances, the signal filter circuit includes magnetic beads, and the in...

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Abstract

The invention discloses a static LED display screen driving circuit. The static LED display screen driving circuit comprises LED lamps and driving chips. The three driving chips and the three groups of LED lamps form one display unit, each driving chip drives one group of LED lamps, each signal output pin of each driving chip is connected with one LED lamp, the static LED display screen driving circuit further comprises a filtering circuit, the filtering circuit comprises a power supply filtering circuit and a signal filtering circuit, the power supply filtering circuit comprises at least three capacitors with different capacitance values, the signal filtering circuit comprises magnetic beads, the input end of each control signal is connected in series with one magnetic bead, and the data input end and the data output end of each driving chip are each connected in series with one magnetic bead. According to the invention, three-grade capacitance value filtering is employed so that interference of each frequency range can be effectively filtered, and the magnetic beads are used for serial connection with signal input ends and signal output ends so that crosstalk can be effectively filtered, and signal completeness is guaranteed.

Description

technical field [0001] The invention belongs to the application field of electronic products, and in particular relates to a static LED display drive circuit. Background technique [0002] LED display (LED panel): LED is light emitting diode, the English abbreviation of light emitting diode, referred to as LED. It is a display method by controlling semiconductor light-emitting diodes. Its general appearance is composed of many light-emitting diodes, usually red, and characters are displayed by turning on and off the lights. A display screen used to display various information such as text, graphics, images, animations, market prices, videos, and video signals. Shenzhen is the origin of LED display R&D and production. At present, there are as many as 10,000 manufacturers of LED display screens in Shenzhen, among which Absen, Gloshine, and Zhongxiang are the leaders, followed by dark horses such as Shenzhen Jiuliang, Haideng, and Unilumin. The price of brand companies is ge...

Claims

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Application Information

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IPC IPC(8): G09G3/32
Inventor 朱霞高珺胡国良
Owner SUZHOU HEXINMEI ELECTRONICS SCI & TECH CO LTD
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