BLK204A-R

Outline L x W x H:	98.00mm x 60.00mm x 28.90mm
Background Color:	Black
Text Color:	Red
Operating Temperature:	--
Interface:	I²C, RS-232, TTL
Dot Size:	--
Voltage - Supply:	9 V ~ 15 V
Backlight:	--
Viewing Area:	76.00mm L x 25.20mm W
Series:	--
Character Size:	4.75mm H x 2.95mm W
Display Mode:	--
Display Type:	LCD - Monochrome
Character Format:	--
Display Format:	20 x 4
Number of Characters:	80
Part Status:	Active

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What is BLK204A-R?

BLK204A-R is an LCD module that belongs to the class of display modules known as LCD, OLED Character and Numeric. It is a type of monochrome graphic display that is 16 characters wide by 2 rows tall and has a graphic resolution of 128x64 pixels, which makes it perfect for both small and medium applications. The LCD module has an extended temperature range of -30 to +75°C and its maximum power consumption is 130 mA at 3.3V, making it energy efficient and reliable. It also has an LED backlight that can be dimmed or turned off entirely, allowing for custom applications.

Application Field

BLK204A-R is typically used for standard and special applications in industrial and automotive control systems, office equipment, medical systems, testing and measuring equipment, traffic control, and many other applications. Its robust construction, wide temperature range, and energy efficiency makes it ideal for harsh outdoor and industrial environments, as well as indoor laboratory and office settings.

Working Principle

BLK204A-R is a passive-matrix LCD module which consists of a layer of liquid crystals sandwiched between two sheets of glass. When current is passed through a pixel, the crystal of that pixel changes its orientation and allows for varying light transmission. This explains why some LCDs require backlights, since the crystals will otherwise rely purely on ambient light to transmit. The control circuit in BLK204A-R uses electronic multiplexing, or switching of pixels, which is why it has to support twice the resolution of a physical pixel. This strategy allows for faster refresh rates, higher brightness, and power savings, which makes it more suitable for applications demanding image clarity, contrast, and response time.When the data refresh rate is high, BLK204A-R also supports rotation of arbitrary character and image resources, thanks to the adopted micro-step technology. This feature can be used to create texts and figures in various sizes and angles with no extra cost.

Conclusion

BLK204A-R is a reliable and energy efficient monochrome LCD module, characterized by a wide temperature range, high resolution, LED backlight, and micro-step technology, which makes it suitable for a wide range of industrial, automotive, medical, and other applications. Its robust construction and efficient working principle make it a perfect choice for projects requiring image clarity, contrast, and response time.

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