According to statistics, appeared in full color LED screen series products, the scanning method of 1/16, 1/8, 1/4, 1/2, static.
Between different LED full-color display scanning methods how to distinguish?
The current way of full color LED driver on the market can be roughly divided into static scan and dynamic scan two ways!
Static scan is divided into static compaction pixels and static virtual!
Dynamic scanning is also divided into dynamic realities and dynamic virtual, separation, there are 2, 4, 8, 16.
A dynamic drive, LED full color advantages/disadvantages: advantage is display driver circuit simple, 2 IC can drive eight to 10 'the following leds, the cost is low.
Leds can be directly with the main control board of all sizes.
The driver board.
Extension plate connection, even not use PCB board.
Low power consumption.
Using time-sharing scanning display mode, power consumption is only about 1/5 of the static display.
The disadvantage is that the LED to drive plate connection between more (
A total of 8 + LED root number)
When digit is large, attachment and repair inconvenience.
Second, LED full color static driven advantages/disadvantages: advantage is full color LED display
components between attachment is very concise, just 5 -
All 6 lines can be LED series, debugging maintenance is convenient.
Display brightness is good, the suitable driving element can drive 2 meters of the LED, is suitable for making large digital outdoor screen.
The disadvantage is that each LED need 1 -
Two driver IC, need the display component PCB making.
Larger power consumption (
Is driven scan 5 times)
Cost is a little higher (
The average display drive part of the cost is higher than scanning drive to zero.
Three, full-color full color LED display driver chip classified into the following two kinds: 1, general chips used in low-end LED to produce flat is more, the most commonly used is general chip 74 hc595 are needed, with eight latches, cross -
And displacement of the storage device and three state output effect.
Every road 35 mA maximum output current (
Not a constant current)
2, special dedicated chip one of the biggest characteristic is to supply constant current source, due to the full color full color LED display screen is the current characteristics of the device, namely on the premise of saturated conductivity, the brightness as the current size of the change and change, not changes with the change of the voltage on both ends.
LED constant current source can ensure stable drive, dispel the sparkle phenomena of leds.
Shanxi high-tech Huaye Electronic Group Co., Ltd. is famous for creating innovative products like the led screen
and supporting their market leadership with savvy marketing campaigns to build an elite brand.
Shanxi high-tech Huaye Electronic Group Co., Ltd. ’s sole aim is to provide exquisite and unheard of features to the concept of producing technology.
Among improvements to led screen, nearly half of consumers considered quality and service as the most important change a business could make in its supply chain.