GOLDEN SKY DISPLAY / ENGINEERING NOTES
Write a specification
that survives integration.
A diagonal size and a photograph do not define a usable module. Send eight parameter groups so the sample can be checked against the real product.
1. Mechanical envelope and active area
Provide the maximum outline width, height and thickness in millimeters. Separately record the visible opening and required active area. Include the FPC exit side, allowable bend space and connector location. Diagonal size alone can hide a different aspect ratio or a wider border. When the enclosure already exists, attach the drawing revision that sets these limits. Without it, a sample may work electrically but fail at the first mechanical assembly.
2. Pixel matrix and image requirements
Specify the native resolution using width × height, the intended orientation and the content that matters: small text, symbols, graphs or moving video. State the actual viewing distance and any font-size constraint. A square pixel matrix does not establish a square mechanical outline. Check both drawing dimensions and display orientation. If resolution changes during sourcing, review the user interface and host memory allocation instead of treating the change as a cosmetic substitution.
3. Native host interface and timing
Name the processor or board and its available display output. Include RGB bus width or DSI lane arrangement, supported voltage levels, target refresh rate and relevant timing constraints. Separate SPI register access from the pixel-video interface. Ask for the initialization sequence and power-up order. A label such as RGB or MIPI does not resolve clock limits, mapping or driver support. Without this information, the supplier cannot establish that the host can drive the panel.
4. Connector, FPC and power
Record the connector series, pin count, pitch, contact side and FPC orientation. Provide the complete pin assignment where a replacement is required. List logic supplies and backlight-driver limits separately, with the power sequence if known. Two 40-pin modules can put power and signals on different contacts. A mechanical fit must not be mistaken for electrical compatibility. Conflicting current values in a source document need clarification, not a guessed driver setting.
5. Optical target and measurement conditions
State luminance, contrast and viewing-direction requirements together with the environment in which they matter. Identify any minimum acceptance value separately from a typical datasheet value. Note the cover glass, anti-glare treatment and bonding method. Agree warm-up time, backlight current and measurement geometry when comparing samples. Without common conditions, a higher headline luminance can describe a different test setup rather than a more readable finished product.
6. Touch and front-surface stack
Specify whether touch is required and identify the host connection, controller support and cover-glass thickness. Include gloves, water exposure or cleaning requirements only when they are real design inputs. If the enclosure is metal, provide enough geometry to evaluate touch tuning. Touch availability is a project question; it is not proof that a particular controller, cover glass and firmware combination has already been validated. Request a sample of the intended stack.
7. Temperature, environment and qualification
Separate operating temperature, storage temperature and reliability-test conditions. Include enclosure heating, sunlight exposure, vibration and condensation where relevant. A high-temperature storage test is not a continuous operating rating. For GX10S-40MB-A1, the supplied specification does not establish the operating temperature, so the catalog leaves it unidentified. State any equipment-level approval requirement without assuming that a display module or a factory document satisfies it. Ask for evidence tied to the actual model and revision.
8. Quantity, schedule and change control
Give sample quantity, first production quantity and estimated annual volume. Record the date the sample is needed and whether custom tooling or burn-in belongs inside that schedule. Ask how drawing changes, substitutions and lifecycle notices will be communicated. A sample planning lead time does not establish availability at every production volume. Confirm the quoted configuration, shipment terms and acceptance record before releasing an order.
A practical first inquiry
Start with a short project description, the eight groups above and any unresolved values marked “not decided.” Include a drawing only after checking that it belongs to the current enclosure revision. A useful response should separate confirmed matches from assumptions and open questions. That separation is more valuable than a quick model recommendation that conceals the remaining work. Use the documented catalog to shortlist candidates, then compare the complete specification.
Bring the specification into focus.
Send the model, host interface, enclosure constraints and quantity. We will reply within 48 hours with parameter questions and an RFQ response.