LED display screen and scanning control circuit thereof
A scanning control and circuit technology, used in static indicators, instruments, etc., can solve the problems of low display quality, high input signal complexity, and complicated PCB wiring, so as to achieve simple PCB wiring, solve high input signal complexity, and improve Display quality effects
Active Publication Date: 2017-05-10
SHENZHEN FM ELECTRONICS GRP CO LTD
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[0005] The purpose of the present invention is to provide an LED display screen and its scanning control circuit, aiming at the problem that the existing LED display screen has the problem of reduced display quality due to high input signal complexity, complicated PCB wiring and strong inter-line interference
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[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] The realization of the present invention is described in detail below in conjunction with specific accompanying drawing:
[0020] figure 2 The module structure of the LED scanning control circuit provided by an embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:
[0021] Such as figure 2 As shown, the LED scanning control circuit 10 provided by the embodiment of the present invention includes a plurality of column control chips 100 (only one is shown ...
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The invention belongs to the technical field of LED display, and provides an LED display screen and a scanning control circuit thereof. At least one shift register comprising multiple cascades, multiple column scanning control chips and an LED scanning control circuit of an LED display array are adopted so that the shift register is enabled to sample sequential input data according to a clock signal and then output multiple sampling signals to the LED display array to gate row channels corresponding to the sampling signals in the LED display array, the column scanning control chips output column scanning control signals to the LED display array to gate column channels corresponding to the column scanning control signals in the LED display array, and thus LED scanning control can be realized. Besides, the LED scanning control circuit is simple in input signal, simple in PCB wiring and low in inter-line interference so that the display quality of an LED display screen can be effectively enhanced, and the problem of reduction of the display quality of the existing LED display screen caused by high signal complexity, complex PCB wiring and high inter-line interference can be solved.
Description
technical field [0001] The invention belongs to the technical field of LED display, in particular to an LED display screen and a scanning 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] Such as figure 1 As shown, the existing LED display mainly uses 38 decoders, row scanning control chips and column channel constant current control chips for LED display control. Among them, the 38 decoder outputs the scan signal to the row scan control chip according to the input signal, so that the row scan control chip outputs the...
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IPC IPC(8): G09G3/32
CPCG09G3/32Y02B20/40
Inventor 苏玉昆
Owner SHENZHEN FM ELECTRONICS GRP CO LTD