15.6" Custom Touch Panel with 4-Hole CNC Carving and AR Glass Coating

Case Details:
Recently, a client entrusted our company with the custom development of a master control touch panel for their control terminal. This equipment utilizes a standard 15.6-inch medium-to-large aspect ratio (16:9) and requires reserved interfaces for physical functional components in specific areas of the front glass cover lens. To address the demands for lightweight assembly, irregular multi-hole processing indexes, and high-transmittance visuals under complex lighting environments, our technical team engineered this black custom capacitive touchscreen panel. This was achieved through a 1.1mm thick glass cover lens, four side-by-side holes carved within the black bezel zone, a surface AR anti-reflection process, and a highly integrated COB structure design, aiming to solve the assembly pain points of smart terminals regarding multi-button integration and space optimization.

Project Background:
This scheme features four circular holes carved side-by-side beneath the black non-display border area. According to client feedback, modern medium-to-large industrial terminals present data on a mainstream 15.6-inch 16:9 screen while typically requiring multiple hardware sets—such as physical indicator lights, infrared temperature sensors, or biometric cameras—integrated at the panel edges. Furthermore, this terminal frequently operates in complex indoor and outdoor environments with highly variable lighting. Standard mirror-finish glass causes reflective glare and ghosting, which impairs the visibility of key UI menus inside the 15.6-inch high-definition viewport. To achieve seamless nesting for multiple components while optimizing optical performance, the client chose to cooperate with our company for process development.

Key Solutions:

1. 4-Hole Carving within Black Bezel and 1.1mm Lightweight Design:
   Our technical team selected a thin glass cover lens with a thickness of 1.1mm. Targeting the precise manufacturing requirement of four side-by-side circular holes in the black border area, the engineering team utilized a digital control CNC glass carving machine. Through scientific adjustment and edge passivation treatments, we ensured that the inner walls of the four holes are perfectly smooth, keeping hole diameter tolerances strictly within engineering standards. This facilitates an integrated flush fit between functional modules and the glass panel during final product assembly, upgrading the casing's dustproof and anti-permeability performance.
2. Surface AR Anti-Reflection Process and HD Viewport Transmittance Tuning:
   To tackle the blinding eye strain caused by light reflections, an AR (Anti-Reflection) optical enhancement process was applied to the 15.6-inch glass surface. Utilizing magnetron sputtering technology, optical thin films are deposited onto the glass surface. The AR process effectively reduces the specular reflectivity of ambient light while upgrading light transmittance. This helps operational menus and parameter charts within the 15.6-inch HD display viewport maintain clear colors and high contrast even under direct intense light.
3. Industrial-Grade COB Structural Design and Stable Electrical Noise Resistance:
   This touch panel utilizes a COB (Chip on Board) structural design, mounting the control chip (IC) directly onto the driver board. This creates a compact layout that minimizes space consumption inside the chassis. To counter external electromagnetic noise, which typically scales up in medium-to-large-sized panels due to increased surface area, the technical team fine-tuned the touch algorithms in the underlying firmware. This ensures that the 15.6-inch panel maintains responsive and stable feedback during multi-point collaborative touch operations.

Overall Impact:
This 15.6-inch custom black touchscreen panel solution complies with the technical indexes of smart terminal equipment regarding weather resistance and structural design. Our technical team completed mass production and delivery within a reasonable lead time. By combining a 1.1mm thin shatterproof design, multi-hole CNC carving, and the AR enhancement process, this solution mitigates the adverse effects of light reflection on visibility, demonstrating our custom manufacturing capabilities in standard medium-to-large-sized non-standard capacitive touch panels like the 15.6-inch specification.

Conclusion:
The successful delivery of this 15.6-inch multi-hole black capacitive touchscreen panel highlights our customized technical chain in medium-to-large-sized shaped precision carving and optical surface engineering sectors. From 4-hole CNC cutting and 1.1mm cover glass physical tempering to the application of surface anti-reflective coating, we completed a full-process, closed-loop delivery. In the future, we will continue to deeply cultivate capacitive touchscreen product lines for smart industrial controls and medical display all-in-one machines across core sizes, providing smart manufacturing enterprises with rigidly stable touch panel technical support.