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Stepped Cover Glass

GL high quality engineered stepped cover glass features a multi level design for flush mounting and enhanced protection, which is ideal for wearable devices, automotive displays and smart home panels. Customizable in dimensions, step height and surface finishes(AG/AR/AF).

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Product Introduction

High-Precision Stepped Cover Glass for Demanding Applications

The reasons for choose GL Stepped cover glass

GL specialize in the precision fabrication of Stepped Cover Glass for demanding applications. But why choose GL among millions of suppliers?

CNC Capabilities: Using 5-axis CNC grinding systems, we achieve step depth tolerances of ±0.05mm and positional accuracy of ±0.1mm, ensuring seamless integration with device housings for wearables, automotive displays, and industrial panels.

Complex Step Designs: Unlike standard cover glass manufacturers, we routinely produce multi-level stepped structures, including stepped recesses for flush mounting and raised steps for lens protection. Custom step heights, angles, and transition profiles are fully supported.

Superior Edge Quality: Our proprietary step-edge polishing process eliminates micro-cracks and stress risers, reducing breakage risk during assembly and field use. The result is an optical-grade edge finish comparable to polished display glass.

In-House Processing: From CNC grinding to chemical strengthening and optical coating (AG/AR/AF), all processes are performed in-house. This integrated approach ensures tighter quality control, faster lead times, and lower risk of damage during handling.

Rigorous Quality Assurance: Every batch is inspected using high-resolution optical measurement systems and surface profilometers to verify step geometry, edge integrity, and dimensional conformance to your CAD drawings.

Whether your application demands ultra-tight tolerances, complex stepped contours, or robust mechanical performance, our manufacturing process is engineered to deliver consistently reliable Stepped Cover Glass for your most challenging designs.

What's the Applications?

Smartwatch / Fitness tracker displays

Stepped edge allows glass sit flush with the housing while clearing the display module underneath

Automotive center console / instrument cluster covers

Curve step match with dashboard contours with thermal and vibration tests all passed.

Medical handheld diagnostic devices

Recessed sealed optical window, packed in cleanroom.

Industrial barcode scanner / RFID reader windows

Stepped for impact resistance, which is chemically strengthened.

Smart home hubs / smart speaker displays

Simpler stepped profile but large volumes and tight cosmetic requirements.

GL inspection flows

silkscreen print

Quality, color difference and paint adhesion test

Dimensions

The first batch piece will be full inspected by vision measuring machine, remainings full match by fixture.

Tempering

Chemical: DOL / CS

Thermal: IK / Particle tests

Transmittance

Raw materials, UV, AR & AG coatings

AG & AF

Roughness & haze test

Rubber durable test

Water drop test

Environmental Test

High humidity and high temperature test

Lighting test

why gL can give you confidence?

We provide stepped cover glass OEM/ODM customization to meet your specific project requirements.

Full sets of customization services

From cutting to finish products, all processes done in house to avoid risk of batch difference and unstable supply.

Every process step on GL's hand keep stable.

Most of the processes done under dustfree workshop.

Quality Assurance

All of our products are RoHS, REACH, CE, CP65 or other standards compliance.

GL already certificated by ISO 9001/ 14001 / IATF16949

FAQ

Q:What is the minimum step height you can achieve on Stepped Cover Glass?

A:Our minimum achievable step height is 0.1mm with a tolerance of ±0.05mm. For most applications, we recommend a step height of at least 0.15mm to ensure optimal structural integrity and consistent manufacturing yield. Step heights up to 2.0mm are available for thicker glass substrates.

Q:Can you produce stepped cover glass with multiple step levels on the same piece?

A: Yes, we specialize in multi-level stepped designs. We can produce glass with two, three, or more step transitions on a single workpiece. Common applications include smartwatch housings requiring both a recessed center area and a raised bezel, or automotive displays with complex mounting interfaces.

Q:How do you ensure the step position accuracy relative to the glass edge?

A:We use precision CNC machining with optical alignment systems. Step position accuracy is maintained at ±0.10mm relative to glass edges or reference holes. Each batch is verified using CMM (Coordinate Measuring Machine) and high-resolution vision inspection systems to ensure consistent alignment.

Q:Can you apply anti-fingerprint (AF) coating on the stepped surface without edge peeling?

A:Yes. Our coating process is specifically optimized for stepped geometries. We apply AF, AR, or AG coatings after step machining and chemical strengthening. The coating is applied uniformly across both flat and vertical step surfaces. We perform tape peel tests and abrasion tests (≥ 3000 cycles) to verify coating adhesion with no edge peeling.

Logistics & Packaging

Packaging

Foil package + vacuum bag + carton + plywood box

Shipping

GL truck team, sea, air, train, special line and express who cooperate with GL.

Lead Time

1-3 working days for samples

7-10 working days for orders

Samples

Free for stock samples, charge for custom samples.

After-Sales Support

Our professional team provides full technical support, from material selection to installation guidance. If any product issue arises, we offer prompt replacement or refund service to ensure customer satisfaction.