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Technical support

📄 Datasheets and documents

LP156WFC-SPF1 datasheet (PDF)
LG Display · 15.6" FHD · eDP 30-pin
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LP140WF9-SPK1 datasheet (PDF)
LG Display · 14.0" FHD · eDP 30-pin
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LM215WF4-SDC1 datasheet (PDF)
LG Display · 21.5" FHD · 500 nits · industrial
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Cross-reference table
LG ⇄ BOE ⇄ AUO ⇄ Innolux, mainstream sizes
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Datasheets are supplied for evaluation purposes; please confirm the revision with us before design freeze.

📚 Field notes

Bright line or bright dot

Separate a panel defect from a cable or T-con problem: cross-check on an external monitor, inspect the connector for oxidisation, then work back through backlight and T-con. A single line across the whole panel is normally the panel itself and needs replacement.

Five rules for laptop screen replacement

Identify the panel model from the label on the back of the screen, not the laptop model; check whether it is eDP 30/40-pin or LVDS; confirm driver support when going from low to high resolution; disconnect the battery first; test solid colours afterwards for dead pixels.

High-brightness or standard?

Outdoor and semi-outdoor installations want 500 nits or more; indoor industrial use is usually fine at 300 nits. Higher brightness raises power and thermal load, so confirm the backlight supply design when specifying.

White screen: panel or mainboard?

Five steps in fifteen minutes: attach an external display, shine a torch through the panel to look for a faint image, reseat the display cable, test a known-good panel, then check the mainboard output. Water damage and drop cases need separate handling.

Yellowing and dark corners

Four typical symptoms of backlight ageing plus a four-step white-screen test you can use for incoming inspection. Also weigh replacing the backlight unit against replacing the whole panel on cost.

Dead pixel acceptance

Black image for bright dots, white image for dark dots, three colour fields for coloured defects. We apply the common industry acceptance criteria and document findings before shipment — useful when you need to settle a claim.

Full illustrated guides are published on our Chinese site: www.szhant.com/support.html. Ask us if you need an English version of any guide.

Need a selection, substitution or driver opinion?

Send the part number, the host device and the constraint that matters most — mechanical fit, interface, brightness or lifetime. We answer with options, not just a price.

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