With the continuous improvement of LED technology and display demand, MLLED (Mini/Micro LED) is rapidly emerging as a new generation of display technology. The GGII LED Research Institute predicts that the global Micro LED market will reach $3.5 billion in 2025 and is expected to reach the $10 billion mark in 2027.
Behind the outbreak of the 10 billion blue ocean market
What is the force that is promoting?
In the face of the real micro spacing of the dot spacing of less than 1mm, the requirements for the technical route are also more stringent. With the advantages of high protection, high density, high contrast, less bad lights, and long life, COB packaging technology solves the reliability problems faced with the shrinking of the dot spacing of LED screens, and has become a new technology engine for the development of MLED.
However, due to the difficulty of lamp mixing, light and color separation in COB packaging technology, and the manufacturing accuracy of chips and other materials, it is easy to cause problems such as uneven brightness and color in the module, and color difference between modules. In order to solve these problems, COB correction has become an indispensable link.
Colorlight has launched CCM6000 massive pixel correction system solution and Mica production line automation correction solution, forming a full-link COB correction from production to the field, helping the high-quality development of MLED.
[COB Correction Process]
CCM6000 solution for massive pixel correction systems
Colorlight's self-developed scientific-grade correction camera CCM6000 with the calibration software Calibration Pro, realizes full-screen correction and single-box correction with high efficiency and high precision, injecting new impetus into COB screen correction.
The CIE1931-XYZ filter in the camera accurately simulates the human eye's perception of the brightness and color of the screen, restoring the true vision.
The camera is equipped with a 16-bit high-precision photosensitive chip, with a constant temperature refrigeration system, which has extremely high acquisition accuracy and stability, and can accurately collect the brightness and chromaticity information of each lamp bead on the screen. With the algorithm optimization of the COB screen by Calibration Pro software, it can effectively solve the problems of unevenness within the COB screen module and color blocks between modules.
Patch issues
Inhomogeneity issues
[Comparison before and after calibration]
The camera has an ultra-high resolution of more than 60 million pixels, a single partition can collect 3840x2160 LED light points, using USB3.0 as its data transmission interface, with a transmission speed of up to 2.5Gbps, the correction of a cabinet only takes 1 minute, and a single correction process can automatically complete the highlight and low brightness correction, which greatly improves the correction efficiency of the COB screen.
Mica production line automation calibration solution
Based on the original massive pixel correction system, the Mica production line automatic correction solution solves the problems related to ink color difference, correction effect and position of COB products.
Mica is a production line automation inspection system independently developed by Colorlight that can intelligently and automatically detect and sort out defective products.
The system integrates scientific-grade image acquisition instruments, production line equipment, and data storage management servers, and realizes the full-link correction from PCB to finished lamp board ink color sorting, multi-angle defect detection of product lighting, automatic correction of single-module production line, and on-site intelligent data maintenance.
In addition, the brightness correction is about 220pcs/h, and the chromaticity correction is about 120pcs/h, which realizes high efficiency and high precision correction.
【Colorlight production line automatic calibration process】
In addition to the improvement of detection technology, the Mica system also realizes intelligent digital management, and the system also includes management platform, cloud storage server, operation control platform and other modules.
During the calibration process, the data is automatically bound to the product barcode and uploaded to the cloud platform, so that customers can use the software to detect the screen module information on a global scale, and download the corresponding module coefficients from the cloud platform to automatically match, which solves many difficulties such as coefficient maintenance.
【Colorlight production line automatic calibration system】
Colorlight's two calibration solutions complement each other, and realize the whole process management of industrial product production through full-link detection and correction and data management, and improve production efficiency and detection effect. Looking to the future, Colorlight will continue to maintain forward-looking thinking, deeply cultivate the field of display control, promote technological innovation and product upgrading, and contribute to the construction of MLED industry ecology and high-quality development.