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Display engineering
Build the display specification from the task, viewing distance and system envelope before choosing a size or resolution. A larger pixel count can create extra integration work without improving the information the user can actually read. Use these guides to connect image requirements with host capability, power, mechanical fit and procurement evidence. The result should be a shortlist of exact modules and a repeatable sample comparison, with clear acceptance conditions and a record of which assumptions must be revisited if the product changes.
01 Translate content into size and resolution
02 Review timing, power and system compatibility
Start with representative screens and the intended observer position. Check the smallest important text, graphics and status information at the real viewing distance rather than choosing a pixel count in isolation. Keep active area, diagonal size, aspect ratio and pixel density as separate entries in the specification. Test whether the proposed layout remains readable after scaling, rotation or application changes. A resolution upgrade should be justified by the task and verified on the target host, with the physical opening and content design reviewed together before committing to a module.
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Match the display requirements to the host output, available memory and graphics path, then verify supported timing and update behaviour with representative content. Refresh rate, image response and application latency should not be treated as the same specification. Measure power in the operating modes the product actually uses, including dimming and standby, and ask whether proposed low-power features are supported by both ends of the connection. Record the module, controller and software configuration so compatibility can be checked again when one of those elements changes.
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Use a comparison sheet that connects each important requirement to a supplier response or sample observation. Include the optical stack, operating limits, mechanical drawing, interface definition and supply commitments instead of relying on a product-family description. Request clarification where specifications use different measurement conditions. Review unresolved items with the relevant engineering and procurement teams, then select samples for a controlled evaluation. Preserve the reasons for the final decision and the agreed acceptance baseline so future revisions or replacement proposals can be assessed without restarting the selection process from memory.
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Capture the requirements and the evidence you will use to compare candidate solutions.
| Requirement | What to define |
|---|---|
| Visual requirement | Define content, viewing distance, lighting, size, aspect ratio and readability checks. |
| System envelope | Record geometry, host interface, timing, graphics capability and operating modes. |
| Sample comparison | Use matched content and conditions, exact module revisions and traceable observations. |
| Supply baseline | Agree documentation, acceptance criteria, availability and change notification before approval. |
Its value depends on content, viewing distance and host capability. Verify the actual layout and workload before accepting the additional integration and power demands.
No. Check pin assignment, electrical requirements, timing, initialization, mechanics and software support for the exact module and host configuration.
Provide the intended task, installation constraints, visual requirements, interface, operating profile and expected supply needs. Clearly identify any unresolved assumptions for the sample review.
Share the application, mechanical envelope, interface and evaluation conditions with the CDTech team.
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