TN LCD Display 50.85x29.85mm 28 Pins Reflective Segment Screen for Flow Meters

Quick Detail:

Custom TN segment LCD panel, 50.85 x 29.85 mm outline, 28 metal pins

Reflective (positive) display mode, no backlight required, zero static power

Customized icons for flow measurement: LTR, GAL, PT, QT units and L/Min scale

Wide operating temperature: -20°C to +70°C

AC waveform driving, 1/4 duty, 1/3 bias, compatible with HT1621 driver IC

RoHS compliant, ideal for flow meters, testers and industrial instruments

Description:

This 50.85 x 29.85 mm TN segment LCD is a custom liquid crystal display designed for flow meters and testing instruments. It integrates four measuring-unit symbols (LTR, GAL, PT, QT), a L/Min flow-rate scale and four-and-a-half digit segments on one glass, allowing end users to switch between liter, gallon, pint and quart readings on the same device.

Manufactured with Twisted Nematic (TN) technology and a reflective polarizer, the display delivers a stable 5:1 to 8:1 contrast ratio under ambient light while consuming virtually no power in static display mode. This makes it especially suitable for battery-powered flow meters, water meters and handheld gauges where long service life is critical.

Every panel is produced in our ISO-certified LCD factory in China. We support full customization: segment layout, icon design, pin configuration, viewing direction, driving duty and connector type (metal pins, zebra strip or FPC). OEM and ODM orders are welcome with low tooling cost and fast sampling.

Specifications:

Display Type: TN (Twisted Nematic) Segment LCD

Outline Dimension: 50.85 x 29.85 mm

Viewing Area: custom per drawing

Number of Pins: 28 (side metal pins)

Display Mode: Reflective, Positive image

Contrast Ratio: 5:1 - 8:1

Viewing Angle: 120 deg (H) x 100 deg (V)

Driving Method: AC waveform, 1/4 duty, 1/3 bias

Operating Temperature: -20 degC to +70 degC

Storage Temperature: -30 degC to +80 degC

Connection: Metal pins / zebra / FPC (optional)

Backlight: None (reflective); LED backlight optional

Certification: RoHS

Applications:

Flow meters and flow-rate indicators

Water meters, fuel meters and chemical dosing devices

Handheld testers and measuring instruments

Industrial control panels and calibration equipment

FAQ:

Q1: Can I customize the segments and icons?

A: Yes. This panel was custom-built for a flow meter customer. We produce fully custom layouts from your drawing, or we can design the electrode layout for you free of charge.

Q2: What is the MOQ?

A: Sample orders start from 10 pcs. Mass production MOQ is 1,000 pcs; negotiable for first cooperation.

Q3: Can I get samples before mass production?

A: Yes, prototypes are shipped within 7-10 days after drawing confirmation.

Q4: Do you supply the driver IC as well?

A: We can recommend and match driver ICs such as HT1621 (3-wire SPI) and provide reference driving code.