Low-profile aperture
The glass outline is 86.20 ± 0.20 × 22.70 ± 0.20 mm. Coordinate the narrow window and the 1.27 mm pin pitch with the final board and housing.
PRODUCT EXPLORERFront view
Rotate, zoom and inspect the product. Loads on request.
Front product rendering of S3490D, showing the four numeric fields, central vehicle symbol and BAR/PSI legends on a white background.
OEM DISPLAY REFERENCE
S3490D
Slim DFSTN LCD with four pressure fields and a central tire symbol
S3490D uses a slim horizontal layout with four main numeric fields around a central vehicle and tire-warning symbol. Smaller temperature fields and BAR/PSI legends sit beside the readings within an 83.20 × 17.17 mm minimum viewing area.
83.20 × 17.17 mmMinimum viewing area
3.0 VLCD operating voltage
A starting point for your custom display.
Images, 3D geometry and listed parameters are OEM reference information. Final dimensions, electrical requirements, optical configuration and construction are confirmed for your project.
Product video
Short product video. Playback starts when you press play.
01 / REFERENCE CONFIGURATION
Start with the essentials.
A reference configuration for discussing your LCD project. Final specifications are subject to project confirmation.
| Model reference | S3490D |
|---|---|
| Glass outline | 86.20 ± 0.20 × 22.70 ± 0.20 mm |
| Minimum viewing area | 83.20 × 17.17 mm |
| Pin pitch | 1.27 mm |
| Display mode | DFSTN, negative |
| Drive condition | 1/8 duty, 1/4 bias |
| LCD operating voltage | 3.0 V |
| Viewing direction | 12 o'clock |
| Polarizers | Front and rear transmissive, adhesive |
| Connection | Pins |
| Operating temperature | −30 to +80 °C |
| Storage temperature | −40 to +90 °C |
02 / OEM DESIGN
Make the display fit your product.
Bring your requirements. We will review the configuration with you.
LCD drive
The reference specifies 1/8 duty, 1/4 bias at a 3.0 V LCD operating voltage. Confirm the waveform and segment map for the ordered revision.
03 / APPLICATION DIRECTION
Tire-pressure displays
The owner-supplied application is tire-pressure displays. The pressure, temperature, battery and warning markings are fixed artwork; sensing accuracy, alert thresholds and vehicle compatibility are system-level decisions.
ENGINEERING NOTES
What the specification means for your design.
How S3490D relates to LCD mode, drive, connection and integration choices, with links to the SuccessLCD engineering guides.
DFSTN LCD mode, negative
Double-film STN: two compensation films give high contrast, here with a dark background and backlit segments. Compare TN, HTN, STN, FSTN, DFSTN and VA →
Drive: 1/8 duty, 1/4 bias
8 common electrodes share the segment lines. Set the controller to the duty, bias, voltage and frame frequency on the drawing. Duty and bias explained →
Connection: metal pins
Metal pins are soldered into the PCB, the most robust connection for segment glass. LCD connection types →
Negative display
A negative LCD needs a backlight; the look is close to a VFD or LED readout. VFD vs LCD →
Similar DFSTN references
04 / PRODUCT SUPPORT
From reference to your design.
How does S3490D differ from S3438D?
S3490D has a shallower 83.20 × 17.17 mm minimum viewing area, four main numeric fields, a 1.27 mm pin pitch and a 3.0 V LCD operating voltage.
Are pressure and temperature measurement functions included?
The LCD supplies the fixed display artwork. Pressure sensors, temperature sensors, conversion logic and warning behavior are part of the finished system.
YOUR NEXT LCD PROJECT
Let’s shape your display.
Share your required display content, enclosure space, drive arrangement, operating environment and target quantity.
