Segment driving
Use the referenced 1/4 duty, 1/3 bias condition when discussing the segment-driver design. The 3.3 V value is LCD operating voltage, not a specified controller supply.
PRODUCT EXPLORERFront view
Rotate, zoom and inspect the product. Loads on request.
Front product rendering of S3938D, showing the numeric fields, measurement legends and battery icon on a white background.
OEM DISPLAY REFERENCE
S3938D
Positive FSTN LCD with dose and rate legends
S3938D has a long numeric layout with dose, rate, time and alarm legends, measurement-unit markings and a battery icon. The current drawing specifies positive transflective FSTN operation with a 3.3 V LCD drive.
Positive, transflectiveDisplay mode
3.3 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
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01 / REFERENCE CONFIGURATION
Start with the essentials.
A reference configuration for discussing your LCD project. Final specifications are subject to project confirmation.
| Model reference | S3938D |
|---|---|
| Display type | FSTN |
| Display mode | Positive, transflective |
| Drive method | 1/4 duty, 1/3 bias |
| LCD operating voltage | 3.3 V |
| Viewing direction | 6 o'clock |
| Operating temperature | −10 to +60 °C |
| Storage temperature | −20 to +70 °C |
02 / OEM DESIGN
Make the display fit your product.
Bring your requirements. We will review the configuration with you.
Assembly connection
Confirm the exact contact arrangement and tail construction against the quoted assembly before laying out the mating circuit.
03 / APPLICATION DIRECTION
Instrumentation
The owner-supplied application is instrumentation. Dose and rate legends describe the fixed display artwork; the LCD reference does not include a radiation sensor, measurement algorithm, alarm function or instrument certification.
ENGINEERING NOTES
What the specification means for your design.
How S3938D relates to LCD mode, drive, connection and integration choices, with links to the SuccessLCD engineering guides.
FSTN LCD mode
Film-compensated STN: a retardation film gives a near black-on-white look with higher contrast. Compare TN, HTN, STN, FSTN, DFSTN and VA →
Drive: 1/4 duty, 1/3 bias
4 common electrodes share the segment lines. Set the controller to the duty, bias, voltage and frame frequency on the drawing. Duty and bias explained →
Transflective polarizer
Readable by daylight and with a backlight in the dark. Transflective LCD display →
Similar FSTN references
- S4261DFSTN segment LCD with multiple instrument readouts
- S3420DFSTN segment LCD module with FPC and backlight
- S4745DFSTN segment LCD with inch and millimetre legends
- S3719DCompact FSTN segment LCD with memory indicators
- S3439DFSTN controller display with humidity and temperature fields
- S3543DYellow-green STN dual-reading instrument display reference
04 / PRODUCT SUPPORT
From reference to your design.
Does the artwork establish an instrument measurement range?
No measurement range or sensor performance is specified by this LCD reference. The legends and unit markings are display artwork.
What must be confirmed for integration?
Confirm the final mechanical envelope, contact arrangement, backlight construction and segment assignment for the quoted revision.
YOUR NEXT LCD PROJECT
Let’s shape your display.
Share your required display content, enclosure space, drive arrangement, operating environment and target quantity.
