Cover Glass Manufacturer
Hengping is a leading glass cover manufacturer that specializes in providing high quality glass panel solutions for touch screens and displays. We are equipped with advanced production equipment, complete production lines and standardized production processes. We also have professional engineering and after-sales teams to provide tailor-made panel design and production services to ensure quality and yield. Welcome to contact us to get Free solutions and Free Samples!
Cover Glass - All You Need to Know
Cover glass/cover Lens, also known as reinforced optical glass, glass windows, reinforced cell phone lenses, etc., is mainly assembled in the outermost layer of touch screen. The main raw material of cover glass is ultra-thin flat glass, after cutting, CNC engraving, thinning, strengthening, coating, printing, and other processes.
Then the glass will be featured with impact resistance, scratch resistance, oil resistance, anti-fingerprints, enhanced transmittance, and other properties. So cover glass can play a role in protecting the touch screen, acting as a high-strength “armor” for the screen’s outermost layer.
After laminated on the outer surface of touch screen, glass cover not only provides protection for the screen but also allows for the printing of various colors, patterns, and logos, enhancing and beautifying the product’s aesthetics. With the advent of the touch era, symbolized by Apple products, capacitive touch screen solutions have emerged as the mainstream for human-device interaction in mobile devices, such as smartphones, tablets, and touch-enabled laptops, due to their stable performance and superior touch feel. No matter what kind of touch control technology utilized, cover remains an indispensable protective component.
Compared to other cover materials, glass cover boasts obvious advantages in hardness, impact resistance, scratch resistance, thickness, surface finish, etc., establishing itself a mainstream protection solution in today’s touch industry. The rise and development of 5G networks in recent years has led to higher and higher requirements for device materials, and metal materials are no longer very suitable for signal transmission in 5G networks, so many cell phone manufacturers have adopted non-metallic cover materials to reduce the weakening problem of 5G signal transmission. The unique circumstances of 2020 led to a surge in online education, remote work, and telemedicine, driving skyrocketing sales of large-screen tablet devices. Consequently, the demand for cover glass was also stimulated, witnessing a rapid ascent.
What is Glass Cover Used for?
The application of glass panels is increasingly prevalent across various industries, including automobile, electronic digital products; watches and smart wearable devices; gaming equipment; fitness equipment; medical devices; smart home appliances; industrial machinery; and other public equipment, among others.
- Automobile: in-vehicle smart devices, center console, car navigator, EV charging station, more.
- Electronics: smartphones, smartwatches, laptops, notebook, and more.
- Medical: wearable medical devices, lab equipment, touchscreen displays for diagnostic machines, and more
- Commercial Devices: POS cash registers, ATM cash drawer, subway ticket checkers, petrol station displays, vending devices and more;
- Home Appliances: ovens and microwaves, refrigerators, cooktops, washing machines, toasters, coffee makers, lighting fixtures, air purifiers/conditioners, and more.
Why Choose Glass Cover?
- High Optical Transparency: Glass has high optical transparency, making the content of the display more clearly visible.
- High hardness and scratch resistance: glass is much harder than many other materials, so it is more resistant to scratches and abrasions from daily use。
- Special treatments available: Glass covers can be treated with a variety of surface treatments, such as anti-fingerprint, anti-reflective and anti-glare treatments, to enhance the user experience.
- Heat and chemical resistance: glass is resistant to many chemicals and remains stable at high temperatures.
- No discoloration over time: Compared to some plastics and other materials, glass does not discolor or yellow over long periods of daily use and exposure to sunlight.
- More sensitive touch sensing: Specific glass types and coatings can enhance the responsiveness and precision of touch screens.
- Smooth touch: Glass provides a smoother, more natural touch experience than some plastics and other cover materials.
- Upscale and aesthetically pleasing: Glass covers provide an upscale and modern look to the device.
Overall, glass covers are preferred for many touchscreen and display applications due to their high transparency, durability, optical properties, and aesthetics.
Glass Cover Production Process and Corresponding Principles
The production process of cover glass can be divided into two methods: overflow downdraw process and the float glass Process. Overflow downdraw process is the prevalent technology adopted by cover glass manufacturers today due to its high yield rate, superior quality, and overall better performance. In contrast, float glass process’s advantage lies in producing cover glass with a higher level of flatness and excellent optical properties.
Cover glass manufactured by different front-end process should be further process to fulfill more functional requirements. The whole process starts from cutting of raw materials to the end of the finished product coating and packaging. Here is details about cover glass production process.
- Cutting: The initial step in processing cover glass involves cutting the raw glass material slightly larger than the final product using cutting machines.
- CNC Precision Engraving: CNC machines with a grinding wheel groove are used to edge the rough glass, removing excess, and employing drills for hole-making, grooving, and edging to meet the finished product specifications.
- Grinding: The primary purpose of grinding is to ensure that the glass substrate reaches the desired thickness for the final product. The principal mechanism involves placing glass between two flat grinding discs, adding an abrasive, and grinding to remove excess thickness. This process refines the glass substrate’s thickness and enhances its flatness.
- Tempering: The goal of tempering is to increase the surface stress of glass, enabling it to resist scratches and impacts. The process involves placing the glass in a potassium nitrate solution at 400°C, promoting an ion exchange between sodium ions on glass surface and potassium ions in the solution. Since potassium ions are larger than sodium ions, their compression creates a stress layer on the glass surface, achieving the desired strengthening effect.
- Screen Printing: Screen printing aims to depict various colors, shapes, and patterns on the glass surface. This is achieved by using screen printing and drying techniques to adhere ink to the glass, meeting the desired aesthetic requirements.
- Coating: The main objective of coating is to form a functional layer at specific locations on the glass surface. This is executed in a vacuum by evaporating, using an electron gun, or magnetron sputtering to deposit the film material on the glass. Common coatings include anti-fingerprint films and anti-reflective films.
- Cleaning: The primary purpose of cleaning is to remove dirt, smudges, and dust particles adhered to the glass surface using ultrasonics, ensuring optimal results during the tempering, screen printing, and coating processes.
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Send us a message if you have any questions, request a quote or free samples. Our experts will give you a reply within 24 hours and help you select the right cover/panel material as your request.
- +86 15019160502
- +86 15019160502
- lily@hpcoverglass.com
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