Chemically Strengthened Glass Revolutionizes OLED Display Protection Guard

Today’s ultra-thin OLED displays require specialized protection that standard glass can’t provide. Chemically strengthened glass has become the industry standard for premium devices because it solves three fundamental challenges:

Structural fragility of thin OLED layers

Sensitivity to environmental stress (UV, moisture, impacts)

Optical interference that degrades display quality

In Weiman, we’re not only offer glass strengthend but also cutting, CNC processings(edging, drilling, slot), tempering(chemically and thermally), silk screen print(low temperature ink and ceramic ink), coatings(AR, AG, AF), bonding(VHB tape, OCA tape and others) and lamination(foils, exposion proof sheet) etc, satisfy customer’s diverse need but keep same quality to each unit / each batch.

What’s chemical strengthened? A Picture To Tells You:

The Science Behind Chemical Strengthening( Ion Exchange Process Explained) For Strengthened Glass:

The transformation occurs through a precise thermal chemical treatment:

400°C molten potassium nitrate baths (6+ hours)

Sodium-potassium ion substitution creates 40-100μm compression layer

800-1000 MPa surface stress (vs. 50-100 MPa in untreated glass)

A simple words: The bigger K+ ion replace Na+ ion during chemical reaction, which create better hardness glass surface to resist impact, scratch, drop etc.

What’s The Applications?

Since years’ development, the strengthened glass is widely used in consumer electronics, in car display, kiosk, wearables, industry controller, medical device, smart watches etc.

What Processes Can Be Selected On Strengthened Glass?

We’re not only offer bare  glass but also offers:

Silk screen print:

Low temperature ink(Including UV resistant ink, usually 3mm below) and ceramic ink(usually 3mm above with thermal tempering).

Coatings:

AR(anti reflection, single each increase 3-4% transmittance)

AG(anti glare, roughness, haze and transmittance can be customized)

AF(anti fingerprint, spray cheaper but less durable and electroplating more durable but expensive than spray method).

Bonding: 3M tapes(Including VHB tape) and OCA tape(fully transparent), can be customized base on design.

Lamination: Except regular foils, explosion proof sheet also can be offered.

What Inspection Will Be Done On Strengthened Glass?

Except visual inspection, we also arrange:

For coating:

We will arrange transmittance test in different wavelengths for AR coating.

For AG coating, we will test the transmittance(VLT), haze and roughness(Ra) base on design to see if they’re under tolerances.

For AF coating, we will arrange water angle test to verify the coating effects and rubber test to check durablities.

For silk screen print:

We will arrange paint adhesion test and use colorimeter to verify if color difference under acceptable range, visual inspection for defectives.

Tempering test including CS, DOL and anti impact test.

FAQ

Q1:What glass substrate will Weiman regularlly used for cover glass?

A1:Less hardness requirement: AGC glass(6H, soda lime glass).

Higher hardness requirement: Aluminosilicate glass(usually Panda Glass, and if brand needed Dragon Tail or Gorilla Glass).

Others like borosilicate, Schott, let us know your requirements.

Q2:What kind of ink will be applied in cover glass?

A2:It depends on actual glass and application.

For glass below 3mm, we usually recommend low temperature ink + chemical strengthening because ceramic ink should use thermal tempering.

If outdoor purpose, we could use UV resistance for the ink more durable.

For glass 3mm above, both low temperature ink and ceramic ink can be applied, the ceramic ink can’t peel off even scratch by knife.