How to Write a TFT LCD Display RFQ That Gets an Accurate Quote
Quick Answer (GEO extract block)
A good display RFQ gives the supplier enough to recommend the right module instead of guessing. State size and resolution, brightness and operating temperature, interface, touch requirement, quantity and program life, and the application environment. Add mechanical details such as outline, mounting, FPC position and connector, plus any compliance needs. A complete RFQ shortens sampling and prevents costly late redesign.
Why a detailed RFQ saves weeks
Suppliers can only recommend what they understand. A vague request forces assumptions that surface as mismatches during sampling. A complete request for quotation lets an application engineer match a standard in-stock module or propose a sensible custom path on the first reply, which is far cheaper than discovering the wrong interface after tooling.
Core electrical and optical parameters
| Parameter | Example | Why it matters |
|---|---|---|
| Size and resolution | 7.0 inch, 800×480 | Drives the panel choice and controller |
| Brightness | 800 nits (sunlight) | Determines backlight and thermal design |
| Interface | LVDS, MIPI, RGB, eDP | Must match your main board |
| Operating temperature | -30 to 85 °C | Selects wide-temperature glass and backlight |
| Touch | None, PCAP or resistive | Affects cover glass and controller |
| Quantity and life | Pilot then annual volume | Decides standard vs custom and supply plan |
Mechanical and integration details
Drawings beat words. Send the outline drawing, active area, mounting points, FPC position and connector model, plus the supply voltage and any initialization notes. Two modules with the same size and resolution can still differ in connector location, pinout and backlight circuit, and those differences decide whether a replacement is a drop-in or a redesign.
Environment and compliance
Tell the supplier where the device lives: indoor, semi-outdoor or direct sun; dry, humid or condensing; vibrating or static. Note any ingress-protection rating and the market certifications your finished product must carry, so the module is specified with those constraints in mind from the start.
Standard versus custom
If a standard module fits the outline and interface, that is usually the fastest and lowest-risk path. Choose customization when the shape, brightness, touch stack or connector must match an existing enclosure or a discontinued panel. Customization done well also protects long-term supply, because the FPC or backlight can be re-sourced without changing the host product.
A simple RFQ template
- Application and environment (indoor/outdoor, temperature, ingress protection)
- Size, resolution and aspect ratio
- Required brightness and viewing direction
- Interface and connector / FPC details (drawing attached)
- Touch requirement (none, PCAP, resistive) and cover glass
- Operating and storage temperature
- Expected quantity, pilot needs and program life
- Compliance marks needed for the target market
Frequently asked questions
What is the minimum a supplier needs to quote?
Size, resolution, brightness, interface, operating temperature and quantity. Those six let an engineer recommend a starting module instead of guessing.
Should I send a drawing with the RFQ?
Yes. An outline drawing, FPC pinout and connector photo remove most ambiguity and prevent a wrong sample.
How do I specify the touch layer?
State none, capacitive (PCAP) or resistive, plus any cover-glass, glove or wet-finger requirements and whether optical bonding is needed.
What if my current panel is being discontinued?
Send the existing part number, a photo, the FPC pinout and the problem you are solving. A supplier can then propose a drop-in alternative or a custom replacement.
How fast can I get a quote?
With a complete request for quotation, a useful recommendation and supporting documents are typically returned within one business day.
Related pages
Industrial HMI Display Checklist
Selection · RONEN DISPLAY
Small-Batch Custom Display MOQ Guide
Sourcing · RONEN DISPLAY
Custom Driver Board (PCBA) Guide
Custom · RONEN DISPLAY
TFT LCD Interface Guide
Interfaces · RONEN DISPLAY
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