Quick RFQ checklist
- Exact manufacturer and model revision, including suffixes.
- Required quantity, annual demand, delivery country and target date.
- Active area, outline dimensions, thickness and mounting points.
- Resolution, interface type, connector model, pin count and pin assignment.
- Supply voltage, signal voltage, backlight voltage/current and dimming method.
- Brightness, contrast, viewing direction, color requirements and touch option.
- Operating/storage temperature, vibration, sunlight and protective requirements.
- Lifecycle status, acceptable date code, documentation and sample-validation plan.
Engineering checks before purchase
| Area | Confirm | Common risk |
|---|---|---|
| Mechanical | Outline, active area, thickness, bezel, mounting holes, connector position | Panel cannot fit the enclosure or cable cannot reach |
| Electrical | LVDS/eDP lanes, pinout, voltage, timing, backlight driver and PWM | No image, unstable image or permanent damage |
| Optical | Brightness, contrast, viewing angle, color, polarizer and surface treatment | Poor readability or visual mismatch |
| Environmental | Operating/storage temperature, humidity, vibration and sunlight exposure | Reduced lifetime or field failure |
| Supply | Lifecycle, EOL notice, date code, MOQ, stock source and lead time | Unplanned redesign or counterfeit/used material |
Lifecycle, replacement and sourcing risk
Industrial programs often run longer than a panel generation. Ask whether the model is active, mature, last-time-buy, discontinued or available only from remaining inventory. For replacement projects, provide the original model, photos of both labels, connector and cable, current driving-board information, equipment application and failure reason.
A proposed alternative should be recorded in a comparison matrix. Differences must be classified as acceptable, requiring system changes, or unacceptable. Do not approve a substitute based only on a distributor cross-reference.
Recommended sample validation
- Verify label, revision, appearance and mechanical installation.
- Check power-up, signal stability, color, brightness and dimming.
- Test cold start, high-temperature operation and long-duration operation.
- Confirm touch, cable, controller and EMC behavior where applicable.
- Approve a golden sample before volume purchasing.
Related industrial LCD selection resources
Data source and review
Specifications should be verified against the manufacturer datasheet, product label, lifecycle notice and an approved physical sample. Stock and lead time require confirmation at the time of quotation.