LED display screen and display control circuit thereof

A display control and circuit technology, applied in static indicators, instruments, etc., can solve the problem of incomplete blanking of LED display screens, and achieve the effect of solving incomplete blanking
CN106531064AActive Publication Date: 2017-03-22SHENZHEN FM ELECTRONICS GRP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN FM ELECTRONICS GRP CO LTD
Publication Date
2017-03-22

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Abstract

The invention belongs to the technical field of LED display and provides an LED display screen and a display control circuit of the LED display screen. In the LED display screen and the display control circuit of the LED display screen, an LED display control circuit comprising multiple line scanning control chips, multiple column scanning control chips, an LED display array, multiple pulse eliminating modules and multiple blanking signal generating modules is adopted, so that the pulse eliminating modules eliminate narrow pulses in line scanning control signals, and the blanking signal generating modules conduct blanking treatment on line channels in the LED display array according to generated blanking signals. Thus, the LED display control circuit can eliminate the narrow pulse signals caused by the timing problem and included in the line scanning control signals output by the line scanning control chips and can also conduct blanking treatment on the LED display array, the selected line channel in the LED display array cannot generate the ghost phenomenon, and the problem that the timing problem exists on an existing LED display screen, and consequently blanking of the LED display screen is not complete is solved.
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Description

technical field

[0001] The invention belongs to the technical field of LED display, in particular to an LED display screen and a display control circuit thereof. Background technique

[0002] Due to the advantages of high brightness, low working voltage, low power consumption, large size, long life, impact resistance and stable performance, LED displays are widely used, such as in stadiums, commercial applications, banks, securities , postal service, wharf, shopping mall, station, postal service, telecommunications, office, surveillance, school, restaurant, hotel, entertainment, and other advertising in different outdoor venues, etc.

[0003] Generally speaking, the LED display screen is controlled by multiple 8-way row scanning control chips and multiple 16-column channel constant current control chips, and because the parasitic capacitance on the channel cannot be ignored, it is easy to cause the afterimage phenomenon of the LED display screen Therefore, a blanking functi...

Claims

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