Characteristics of blue light intelligent LED display screen - Shenzhen caishida
Author:Brother CAI Time:2021-07-21 16:51 Browse(261)
Blue light intelligent LED display features - Shenzhen caishida, touch screen and OLED Forum
High performance dot matrix display is driven by CMOS chip embedded in the circuit board. Each display can be directly connected with a microprocessor or microcontroller, It eliminates the need for additional interface devices.

Characteristics of blue light intelligent LED display screen - Shenzhen caishida

using the serial interface can bring more display words with the least number of connection lines.
using the universal easy to read 5x7 pixel display format, it can also display the Roman alphabet in upper and lower case Katakana and other user-defined symbols or characters.
these Blu ray displays can be stacked vertically or horizontally in design.
they are very suitable for multi character display applications.
Blu ray intelligent displays are quite similar to other Avago intelligent display products.
the main difference is that Blu ray LED has high-quality color performance, The other is the slight difference in parameters.
it is the same as other intelligent displays.
the blue light intelligent display also uses two independent power systems, one of which is used as the logic circuit of the display, The other can provide LED power supply for display.
two power supply systems are used for color star led, which can keep the purity of logic circuit power supply.
and the voltage of LED and logic circuit can be controlled independently, The LED voltage can vary from 0V to 5.5V without affecting the point matrix register or control register.
for blue LEDs,
the LED voltage can vary from 4.5V to 5.5V without causing any obvious impact on the light output or causing unpleasant pixel difference.
basically.
the LED voltage should not be lower than 4.0V, The reason is that the blue LED has a higher forward voltage than the traditional gap technology.
the logic voltage can vary from 3V to 5.5V without affecting the display information or display intensity.
the blue LED has a higher forward voltage than the traditional gap technologyWorking below 4.5V will affect the timing and logic level. If it is below 3V, it may cause changes in the contents of point matrix register and control register.
blue light intelligent display can provide two methods to change the brightness.
they are controlling the peak current of pixels and using pulse width modulation, This function can be set by controlling bits d0 to D5 of word group 0 as shown in Figure 1.
in addition,
it is not recommended to control the brightness of the display screen by PWM the power supply voltage of the LED.
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this function can be set by controlling bits d0 to D5 of word group 0 as shown in Figure 1
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