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BLK202A-R Application Field and Working Principle

The BLK202A-R is a character/numeric display module based on liquid crystal technology utilizing LCM (Liquid Crystal Module) and high-speed low power drivers, suitable for digital electronics, industrial meters and other devices. This module is categorized as a display module, specifically falling under the LCD, OLED Character and Numeric category.

The BLK202A-R display module comes with a standard set of features, such as an LCD viewing area and low power consumption combined with an on-chip controller that simplifies the system design and reduces development time. This module supports a wide range of operating voltages from 3V to 5.5V, and its current consumption is too low to require a heat sink for full operation. It is also capable of displaying 6 characters per line and 4 lines in total.

Application Field

The BLK202A-R display module is a reliable and versatile solution for various types of electronic products, including digital electronic products, industrial meters, car audio, air conditioning, and microwave oven. Its wide range of applications make it ideal for a variety of needs including but not limited to, displaying data, audio playback, and menu options.

The BLK202A-R display module is designed to be used in combination with an CO2 sensor or a PIR (Passive Infrared) sensor. It can be employed in security systems, home automation, and other such systems that require controlling of devices and feedback of the environment’s conditions.

Working Principle

The BLK202A-R display module is built around a liquid crystal that is capable of changing its arrangement of molecules when electrically activated. This allows the display to change the optical properties of the device. The basic principle underlying its operation is the electro-optic transduction, which means that when an electric field is applied to the liquid crystal, it changes its optical characteristics such as light transmission or reflection.

The BLK202A-R display module is constructed of an array of liquid crystal cells connected to a glass substrate. This array of cells is arranged in a pattern that allows the user to view different combinations of letters and numbers. The LCM carries a voltage that causes the applied electric field to be re-distributed by rearranging the arrangement of molecules in the selected LCD cells. This rearrangement changes the optical characteristics of the display, enabling the desired letter or number to become visible.

The BLK202A-R display module is designed with an on-chip controller to simplify the system design and reduce development time. This feature provides a direct interface to the CPU, allowing for a seamless connection between the two. This controller chip allows faster data transmission and a consistent display result, regardless of the incoming data. Additionally, the controller chip also provides protection for the device against errors, as well as power saving features that help preserve the device’s battery life.

In summary, the BLK202A-R display module is a versatile, reliable and cost-effective device, suitable for a wide range of applications. It is categorized as a display module, specifically falling under the LCD, OLED Character and Numeric category with a host of features that make it ideal for many different uses.

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