Colour Accuracy and Delta E: Measuring and Specifying Panel Colour
Colour accuracy and Delta E for display panels: what the number measures, how to measure it, and how to write a colour tolerance suppliers…
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Display engineering notes
Technical Blog
Engineering notes from the CDTech display team: choosing and integrating TFT LCD modules, touch screens and optical bonding for industrial, medical, automotive and smart-home products.
- TFT LCD modules
- Touch & bonding
- Industrial
- Medical
- Automotive
- Selection & sourcing
All articles
278 articles on choosing, integrating and qualifying display modules.
Liquid Ingress in LCDs: Failure Signatures and What They Mean
Liquid ingress in LCDs: the failure signatures, how moisture enters a sealed assembly, how to tell ingress from condensation, and the design fixes. |…
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Dead, Stuck and Bright Pixels: Definitions and Acceptance Limits
Dead, stuck and bright pixels explained: how each state differs, how the classes are counted and how acceptance limits are written for a product.…
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Burn-In Versus Image Retention: Telling Them Apart
Burn-in versus image retention: how the two differ, the test that tells them apart, why LCDs behave differently and how static HMIs are specified.…
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Wrinkles, Blotches and Bruises: LCD Defect Vocabulary for Buyers and Suppliers
LCD defect vocabulary for buyers and suppliers: wrinkles, blotches, bruises and cloudiness mapped to the mechanisms behind them and to acceptance terms. | Target…
Read the noteTesting a Touch Screen: Methods That Actually Find Faults
Touch screen testing that finds real faults: grid accuracy, edge tests, glove and wet tests, durability, ESD and the production fixtures that repeat results.…
Read the noteMIPI DSI for Small and Medium Displays
MIPI DSI for small and medium displays: lanes and bandwidth, command versus video mode, host support, cable limits and the integration checklist. | Target…
Read the noteSPI Versus RGB Interface for Small Displays
SPI versus RGB interface for small displays: how each drives the screen, bandwidth and refresh limits, pin count, tearing and how to choose. |…
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Measuring Display Brightness: Methods, Instruments and Reporting
Measuring display brightness properly: what nits means, which instrument to use, the geometry and warm-up that change the result, and how to report it.…
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Pressure Marks on Displays: Mechanism, Detection and AQL Treatment
Pressure 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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