Proving the module works: defect classes, mura and uniformity, AOI and AQL inspection, qualification and reliability testing, and the certifications buyers are held to.
33 articles in this category.
Differentiation page: publish the linked new page before the foundation rewrite of the old page. | Meta description: Second-source qualification for display modules: interchangeability…
Read the noteIncoming inspection for display modules: what to check, how often, sampling plans, fixtures and how to handle borderline results without slowing production.
Read the noteEMC certification for display products: what is tested, the emissions and immunity checks that fail most often, and pre-compliance practice.
Read the noteProduction defects and field damage look alike on a returned display. Location, morphology and timing separate them, and a written standard settles the claim.…
Read the noteGreen vertical lines, streaks and dead columns in a display: what causes them, how to localise a line defect in minutes and which ones…
Read the noteScreen yellowing and panel ageing: how polarisers, adhesives and backlights yellow over time, how to measure the shift and how to specify against it.…
Read the noteLiquid ingress in LCDs: the failure signatures, how moisture enters a sealed assembly, how to tell ingress from condensation, and the design fixes. |…
Read the noteDead, stuck and bright pixels explained: how each state differs, how the classes are counted and how acceptance limits are written for a product.…
Read the noteBurn-in versus image retention: how the two differ, the test that tells them apart, why LCDs behave differently and how static HMIs are specified.…
Read the notePressure marks on displays: the cell-gap mechanism, where assembly and mounting introduce them, how to detect them and how to treat them in AQL…
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