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One-eighth scanning LED display screen resistor blanking circuit

A technology of LED display screen and blanking circuit, which is applied to static indicators, instruments, etc., can solve the problem of complex blanking circuit and high cost, and achieve the effect of simple structure, solving smear, and saving costs.

Inactive Publication Date: 2015-03-04
LICERAM ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a one-eighth scan LED display screen resistance blanking circuit, which solves the problem of complex and high cost of the one-eighth scan LED display screen blanking circuit in the prior art

Method used

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  • One-eighth scanning LED display screen resistor blanking circuit

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specific Embodiment

[0034]An eighth-scan LED display screen resistance blanking circuit, including a decoder U1, first to tenth resistors, and a capacitor C1, the decoder U1 includes a power supply terminal VCC, a ground terminal GND, a first control terminal A, the second control terminal B, the third control terminal C, the first enabling terminal E1, the second enabling terminal E2, the third enabling terminal E3, the first to the eighth output terminals, the power supply terminal VCC and A capacitor is connected between the ground terminals GND, the first control terminal A is connected to the first control signal OA input from the outside, the second control terminal B is connected to the second control signal OB input from the outside, and the third control terminal C is connected to the third control signal input from the outside. Signal OC; the first enable terminal E1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is grounded, the second enable te...

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Abstract

The invention discloses a one-eighth scanning LED display screen resistor blanking circuit. The one-eighth scanning LED display screen resistor blanking circuit comprises a decoder, the first to the tenth resistors, and one capacitor. The decoder comprises a power supply terminal, a ground terminal, a first control terminal, a second control terminal, a third control terminal, a first enable terminal, a second enable terminal, a third enable terminal, and the first to the eighth output terminals; the first to the third control terminals are connected with externally input control signals; the first enable terminal and the second enable terminal are low-level effective, the third enable terminal is high-level effective; each output terminal is connected with an independent LED row line, and the resistor is connected between the row line and ground. Using the blanking circuit with the decoder and the resistors for blanking effectively solves the problem of smear of LED display screen, meanwhile, the structure is simple, the cost is saved, and convenience is provided for wiring.

Description

technical field [0001] The invention belongs to the application field of electronic products, and in particular relates to a resistance blanking circuit of an eighth-scan LED display screen. Background technique [0002] A phenomenon that has always existed in the LED display industry is smearing and caterpillars. Major controller manufacturers continue to improve this phenomenon. Smearing will appear before and after smearing. It will cause a problem of section capacitor itself, and it will also act as a capacitor, which is the front blanking; the so-called rear smear: that is, the line tube 4953 double P-channel-MOS tube, when working, there is a 5V to 0V switch on and off, In the process of reducing the voltage, there will be a dark and bright smear of the forward voltage drop of the LED in the (N-1) row. [0003] The control signals provided by different controllers are different. Most of the above solutions are not compatible with all controllers. The finished PCB boar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 孙道明司马云吴会利谢中明
Owner LICERAM ELECTRONICS TECH
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