7 Inch TFT LCD Module with Custom Cover Glass and Sensor Openings - VXT700MYIA-03C​

The ink is specified with a number you can measure

The drawing states the requirement for the ink printed over the openings:

Visible light transmittance at 520 nm: less than 25%.

That is a meaningful specification rather than a request for "black ink". What it describes is IR-transmissive, visibly-opaque ink: it blocks most visible light so the opening reads as black and the sensor behind it is invisible, while still passing the infrared the proximity sensor emits and receives. The wavelength is named, the threshold is named, and the direction is unambiguous.

Why that matters in practice:

• It is checkable. You can measure it at incoming inspection with a spectrophotometer at 520 nm rather than arguing about whether a patch "looks dark enough".
• It is the difference between a working and a dead proximity sensor. Ordinary black ink blocks IR too, and a proximity sensor behind it simply never triggers. The failure looks like a firmware or sensor problem, and teams have spent weeks there.
• It is an appearance requirement at the same time. Under 25% at 520 nm means the window disappears into the surrounding border.

The drawing also notes a visible-light transmittance requirement with a minimum for the printed ink, so both a floor and a ceiling are in play — worth confirming the exact pairing with us when you specify the ink.

Anti-Fingerprint Glass, and a Note on Samples

The glass surface is given an anti-fingerprint treatment (防指纹处理). AF coatings are oleophobic: they raise the contact angle so fingerprint oils bead up instead of smearing, which keeps the surface readable and makes it easier to wipe.

What is worth knowing about AF coating:

• It wears. An oleophobic coating is a thin surface layer and it degrades with wiping. Its performance late in the product's life is not its performance on day one.
• It is measured by contact angle, not by feel. If it matters to your product, ask for the contact angle and its value after abrasion testing.
• It does not make the surface harder. Scratch resistance is a property of the glass and any strengthening, not of the AF layer.

Item	Value
Model	VXT700MYIA-03C
Size	7 inch
Type	Front panel assembly — display and touch under custom cover glass
Cover glass openings	Camera window, proximity sensor window, microphone through-hole
Opening ink	Visible light transmittance at 520 nm < 25%
Glass surface	Anti-fingerprint (AF) treatment
Shielding	Black electromagnetic shielding layer, both sides
Rear marking	Logo silk-screened white on the back
Connector	40-pin FPC
Overall stack	2.25 ± 0.10 mm (also shown 2.10 ± 0.10)
Open window	1.75 ± 0.3 mm
Section layers	0.85 ± 0.08 / 0.75 ± 0.05 / 0.60 ± 0.07 / 0.30 ± 0.03 / 0.30 ± 0.07 mm; 0.20 and 0.07 mm
Corner radii	2 × R0.20
Component area height	1.8 MAX
Toleranced dimension	50.20 ± 0.5
Reference dimensions	(45.14), (57.32), (10.91) — reference only, not for inspection
Dimensions near microphone hole	14.20, 19.00 — confirm against drawing

Outline Drawing