Mura and Luminance Uniformity: Causes, Detection and Acceptance
Mura is the display industry's word for unevenness: patches, streaks or blotches that break the uniformity of an otherwise correct image. It is the…
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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.
ISO 9241-307 Pixel-Defect Classes Explained for Buyers and QC
Pixel-defect arguments are almost never about whether a defect exists. They are about whether the defect was within the accepted class - and that…
Read the noteMedical Display Cleaning and Cover Glass: Practical Guidance
A medical display is cleaned constantly, and every cleaning cycle is a stress event for the cover glass and coatings. Use the wrong agent…
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What Should You Test When LCDs Arrive?
Incoming inspection is where a display shipment becomes your problem or the supplier's. Testing LCDs on arrival—packaging and ESD condition, visual quality, power-on behavior,…
Read the noteWhat Does Sourcing a Custom LCD Look Like End to End?
Sourcing a custom LCD is a process with stages, gates, and documents—not a single quote request. Done well, it moves from a defined requirement…
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How Does AQL Inspection Work for LCD Orders?
AQL (Acceptable Quality Limit) is the tool that turns "we want good displays" into a checkable agreement between buyer and supplier. It defines how…
Read the noteWhy Do LCD Prices Vary So Much?Why Do LCD Prices Vary So Much?
Two quotes for "the same" LCD can differ by a wide margin, and often the panels are not the same at all. LCD pricing…
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Medical Display Supply Chain: Traceability and Change Control
A display module contains a panel made by one company, a driver IC from another, a backlight with LEDs from a third, an adhesive…
Read the noteHow Do You Audit an LCD Factory?
An LCD factory audit is a logistics exercise as much as a technical one: plan the visit, agree the documents in advance, examine the…
Read the noteWhich LCD Factory Certifications Actually Matter?
Factory certificates describe an organisation's management system; they do not approve a product. This page covers the four certificates that appear on display factory…
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