QBD40S0

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QBD40S0 application field and working principle

As a kind of display module, the QBD40S0 is classified under "LED Character and Numeric". This type of module specializes in displaying a range of characters, numerals, and graphemes that the user desires through the application of Light Emitting Diodes¹ (LEDs).

The module itself is composed of a five character wide and two row (Top and Bottom) display window with a total pitch resolution of 1.25mm. It requires an operating voltage of +5V DC, with a current consumption of about 15mA and utilizes standard TTL² electrical interface. Furthermore, the QBD40S0 is constructed with a built-in driver chip controller.

Wildly applied in data entry, input display, operation and setting instructions and so on, the QBD40S0 could present single character, numeric, decimal numeric or ascii character. It has a great capacity and long running life, making it portable and applicable in various circumstances.

The working principle of the QBD40S0 is relatively simple. First, the chip controller receives data from the host. The data is then decoded and demodulated into an electrical signal. After that, the electrical signal is filtered and the corresponding LED module is choosen. Finally, the window displays characters, numerals, or graphemes demanded by the user.

To sum up, the QBD40S0 is a light weight, low cost and highly effective LED module for diverse applications. As opposed to conventional LED modules, the QBD40S0 has high stability and low power consumption. Moreover, it has a wide operating temperature range and provides a high degree of reliability and durability.

¹ Light Emitting Diode
² Transistor-transistor logic

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