Inside the slim body of the LCD screen, behind the brilliant backlight of the smart device, there is a crucial precision process hidden - laser dotting of the light guide plate. The CO2 laser marking machine, with its unique advantages of non-contact, high precision and digitalization, is completely innovating the micro-dot manufacturing of the light guide plate (LGP), and promoting the display and lighting technology to continuously break through the limits of thinness, high brightness and uniformity.

 

Traditional light guide plate dot processing relies on screen printing or chemical etching, which often faces bottlenecks such as insufficient precision, high risk of contamination, and cumbersome pattern changes, which can easily lead to uneven light, bright spots and dark areas or yellowing of materials. The emergence of CO2 laser marking machines has brought a subversive solution.

 

The CO2 laser marking machine uses a focused ultraviolet or green laser beam to accurately engrave precise concave dots with a diameter of only 20-200 microns on the back of the light guide plate in a purely physical vaporization method, achieving micron-level point control and depth consistency. Digital processing does not require plate making, and any dot distribution map designed by CAD can be switched in seconds, which completely liberates the design freedom. Whether it is a circle, square or special shaped dot matrix, laser can accurately present it.

 

The application of flat laser dot has deeply empowered multiple scenarios: in ultra-thin TVs and notebook monitors, it supports direct-down backlight modules with a thickness of less than 0.4 mm to achieve uniform light output; it customizes special-shaped light guide plates for mobile phones, tablets, and car-mounted curved screens to meet cutting-edge designs; in high-end home appliances and car central control, it replaces physical buttons by engraving precise waveguide structures to achieve contactless touch feedback; it even integrates light and shadow art into smart light strips and building curtain walls to project customized atmosphere effects. In the field of Mini LED display, which represents the future, laser precisely controls the mixing distance on the light guide plate, becoming a key technology to improve the uniformity of HDR picture quality.

 

The meticulous craftsmanship of the flat laser marking machine on the light guide plate is far more than a process replacement. It uses a digital "light pen" to write the logic of light on a transparent substrate, bringing three revolutionary advances to display and lighting: thinner structure, breaking through physical limits; brighter light effect, significant energy saving and consumption reduction; smarter control, opening a new era of zone dimming and dynamic light and shadow. When each beam of light passes through these microscopic dot arrays precisely constructed by lasers, it silently declares: an era of perfect light effects defined by digital light has been lit up.