| Display Performance | Resolution and pixel density | Specify the exact resolution, active area, pixel pitch, and aspect ratio for the target application. | Resolution affects image sharpness, user interface space, graphics quality, and system compatibility. | Approved datasheet, mechanical drawing, interface specification, and sample inspection report. | 8% |
| Display Performance | Brightness | Typical commercial requirement: 250–500 cd/m². Outdoor or high-ambient-light products commonly require 800 cd/m² or more. | Higher brightness improves readability under strong ambient light but can increase power consumption and thermal load. | Optical test report identifying test conditions, measurement equipment, uniformity, and minimum brightness. | 8% |
| Display Performance | Contrast ratio | Request a guaranteed minimum value and confirm whether the specification is static contrast or dynamic contrast. | Contrast influences black-level appearance, image depth, and readability in dark scenes. | Panel datasheet, independent optical measurement, and production quality-control limits. | 5% |
| Display Performance | Viewing angle | For shared-view products, target at least 80° left/right and 80° up/down at the stated contrast criterion. | Wide viewing angles are important for public equipment, vehicle displays, medical equipment, and control panels. | Viewing-angle curve, contrast criterion, color-shift data, and sample validation from multiple lots. | 6% |
| Display Performance | Response time | Target 5–25 ms for general interfaces; confirm the measurement method because gray-to-gray and rise/fall results are not equivalent. | Lower response time reduces motion blur and ghosting in video, instruments, and interactive interfaces. | Response-time test method, gray-to-gray data, refresh rate, and video sample evaluation. | 5% |
| Optical Quality | Color performance | Define color gamut, white-point tolerance, gamma target, and color difference limits according to the application. | Consistent color is essential for imaging, retail signage, industrial monitoring, and brand-sensitive user interfaces. | Color test report, calibration procedure, CIE or equivalent measurement data, and approved golden sample. | 6% |
| Mechanical Design | Dimensions and mounting compatibility | Require controlled drawings for active area, outline size, bezel, mounting holes, connector position, and maximum thickness. | Mechanical mismatches can cause enclosure redesign, assembly delays, and field-service problems. | 2D drawing, 3D CAD file, tolerance table, connector drawing, and first-article inspection report. | 7% |
| Interface Engineering | Electrical interface | Confirm interface type, lane count, voltage, timing, backlight current, connector specification, and host-controller compatibility. | Electrical incompatibility may require a new controller board or firmware changes. | Electrical specification, initialization code, timing diagrams, interface samples, and compatibility test results. | 8% |
| Touch Integration | Touch-panel capability | For touch products, define projected-capacitive or resistive technology, cover-lens thickness, glove operation, and controller interface. | Touch performance depends on the complete stack, including cover glass, bonding, noise control, and firmware. | Touch sensitivity report, gesture test results, cover-lens drawing, environmental test data, and controller documentation. | 6% |
| Reliability | Operating temperature | Use application-specific limits; a common industrial target is approximately −20°C to +70°C, while extended-temperature designs may require wider limits. | Temperature affects liquid-crystal response, brightness, startup behavior, and long-term reliability. | Temperature test report, startup and operating limits, thermal derating data, and environmental test conditions. | 8% |
| Reliability | Storage temperature and humidity | Require documented storage limits and humidity exposure results suitable for the shipping and warehouse environment. | Improper storage can lead to moisture damage, corrosion, optical defects, and packaging-related failures. | Storage test results, humidity test records, moisture-control packaging specification, and handling instructions. | 4% |
| Reliability | Backlight life and uniformity | Request an LED backlight lifetime definition, commonly based on reaching 50% of initial brightness, plus a minimum uniformity target. | Backlight aging is a major cause of brightness loss and visible non-uniformity during long-term use. | LED lifetime model, lumen-maintenance test, brightness uniformity map, and thermal design information. | 7% |
| Quality Management | Defect control and acceptance criteria | Use an agreed inspection standard covering dead pixels, bright pixels, mura, scratches, contamination, light leakage, and cosmetic defects. | Clear acceptance criteria reduce disputes and create consistent quality across production lots. | Quality-control plan, inspection standard, defect photographs, AQL plan, and lot inspection records. | 8% |
| Quality Management | Management-system certification | ISO 9001 is a useful baseline; automotive programs may require IATF 16949, and environmental compliance should be separately verified. | Auditable management systems support process control, corrective action, traceability, and continuous improvement. | Current certificates, certification scope, audit findings, corrective-action records, and supplier-audit results. | 6% |
| Regulatory Compliance | Restricted substances and chemical compliance | Confirm applicability of RoHS Directive 2011/65/EU as amended by Directive (EU) 2015/863 and REACH Regulation (EC) No. 1907/2006. | Compliance reduces market-access risk and supports customer and regulatory documentation requirements. | Declaration of conformity, material declarations, laboratory test reports, and supply-chain compliance records. | 6% |
| Supply Capability | Prototype and mass-production lead time | Evaluate separately: engineering sample lead time, pilot-run lead time, standard replenishment lead time, and escalation procedures. | Predictable lead times help buyers manage product launches, safety stock, and production continuity. | Written production schedule, capacity plan, historical on-time-delivery data, and business-continuity plan. | 6% |
| Commercial Terms | Minimum order quantity and lifecycle support | Confirm MOQ, sample policy, tooling charges, last-time-buy notice, engineering-change notice period, and expected product lifecycle. | Lifecycle transparency is especially important for industrial, medical, transportation, and embedded products. | Commercial quotation, lifecycle policy, change-control procedure, discontinuation policy, and supply agreement. | 5% |
| Technical Support | Documentation and engineering response | Require complete English documentation, named technical contacts, response-time commitments, and support for integration debugging. | Fast technical support reduces development delays caused by timing, firmware, touch, and mechanical-integration issues. | Documentation package, sample-support process, issue-tracking records, response-time SLA, and escalation matrix. | 5% |