QBDS400R

QBDS400R is an LED display module developed by Qi Bai Technology, which is mainly used in industries such as bank card machines, ATMs, elevators, financial POS machines, ticket machines, medical equipment, and automotive electronics. This display module has a high luminous intensity, which ranges from 2000cd/m2 to 5500cd/m2. It is designed with a wide viewing angle and wide temperature range to meet the performance requirement of displays under different environments. In addition, the module has a long life span that can reach 100,000 hour. It is qualified with various safety requirements of international standards, such as UL, FCC, RoHS and CE. Also, this display module features with good aging stability and static electricity protection performance, which makes it suitable for sustained use.

The QBDS400R module is specifically designed for the display of four-digit character or number. It has a 4-digit 7-segment LED display which formed with high-intensity red LED lamps. The display is provided with an adjustable brightness control allows to select the desired brightness level. It also designed with built-in data driving circuits to drive the LED display as required. A total of eight N/C pins are used to provide the LED display with signals like a decimal dot and other control signals. The input voltage range is 5.0V to 8.0V. There is an option to select the display segment common model between the active low (negative logic), and active high (positive logic) so that it is compatible with different data formats.

The working principle of the QBDS400R is quite simple. The power input is connected to the LED lamp, and the data driving circuit. Then the data driving circuit will receive the signals from the microprocessor for LED display. According to the data information, the LED display will be turned on or off to display the desired characters or numbers. The brightness control circuit is provided for the adjustment of the desired brightness. When the detect the voltage reaches the lower limit value or higher limit value, the current will be adjusted in order to maintain the display brightness in a desired range.

In conclusion, QBDS400R is a high intensity four-digit character or number LED display module developed by Qi Bai Technology. It is designed with wide viewing angles and wide temperature range, and also has a long time life span, good aging stability and static electricity protection. The QBDS400R display module has a 4-digit 7-segment LED display, which is designed with built-in data driving circuit and adjustable brightness level control. With the simple yet effective working principle, the user can use it with confidence in different application fields.

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