laser direct imaging (LDI) system solutions for various PCB Multilayer

Traditional photolithography imaging process requires multiple steps to create the photo tool used to generate the image on the PCB. This has generated a number or challenges for PCB fabricators over the years. LDI provides a number of advantages:

• Quality: Photo film issues in the past have resulted in imperfect images due to inherent susceptibility to fluctuations in temperature or humidity. Laser imaging result in much more precision and consistent imaging, and eliminate any film-related defects.
• Laser imaging provides precision positioning and improved resolution. Image trace widths, spaces, and alignment are more accurate.
• Photo methodology requires temperature- and humidity-controlled environments to provide the most accurate transfer of images to boards. LDI reduces the impact of environment on the resulting images, and removes the impact of light reflection inherent with photo processing techniques.

In order to be used in HDI board production, an LDI system should have the following capabilities:

• High quality exposure of fine lines and spaces down to at least 0.075mm (4mil) and below of possible.
• Good depth of focus ensuring imaging quality for high topography design. This is especially needed for uniform exposure of outer layers and Sequential Build Up (SBU)
• A system design that can accommodate various product types, materials, thicknesses, manufacturing technologies and fabrication process.
• A flexible, highly accurate registration system compatible with different manufacturing technologies and production steps.
• An ability to compensate dynamically for material dimension changes in order to overcome variance in panels form the same batch and to be able to achieve tight registration tolerance over the whole area of PCB panels.

PCB laser direct imaging (LDI)
When fabricating a circuit board, the circuit traces are defined by what is the imaging process. Laser direct imaging ( LDI ) exposes the traces directly with a highly focused laser beam that in NC controlled, instead of flooded light passing through a photo tool, a laser beam will digitally create the image.

How does laser direct imaging ( LDI ) work?
Laser direct imaging needs a PCB with the photo-sensitive surface that is positioned under a computer controlled laser. And then the computer is creating the image on the board with the light of laser. A computer scans the board surface into a raster image, matching the raster image to a pre-loaded CAD or CAM design file that includes the specifications for the necessary image intended for the board, the laser is used for directly creating the image on the board.

About us
We are an innovative supplier of various PCB laser direct imaging (LDI) system solutions. Our system product portfolio ranges from LDI system configurations for high-mix and emerging PCB niche applications to fully automated LDI system solutions for mass production environments.

Jiangsu GIS Laser Technologies Inc. (hereafter referred to as GIS Laser) is a subsidiary of GIS Tech Inc. which is a multinational company providing advanced intelligent solutions into the industries of New Energy, Semiconductor Packaging, Lithium Battery, PCB and Printing, with its incredible innovation. through its independent Next Tech Research Institute, Business Division and Manufacturing Plant.

Our mission is to be a professional supplier in product solutions and services, striving for sustainable optimization and innovation in manufacturing capabilities for customers.

Our values are following with innovation, humility, perseverance, commitment.

GIS Tech has a strong professional R&D and after sales team with over 30 years experiences to enable the annual production output to be over 500 units, based on its professional manufacturing management SOP process through 10,000 square meter manufacturing center in Xuzhou city, Jiangsu province.

GIS Tech is the pioneer in introducing the DLP Technology into the laser imaging applications, owning the whole independent intellectual properties in the technologies of data processing, data transmission, sub-graph, electronic control, board card control, laser and optical lens etc. Our main products are CTS series (Computer to Screen system), CTP (Computer to Plate system) and fully automatic printing plate developing system.

GIS Tech is prepared to meet with new challenges in funding, technology, teams, applications, services, supply chains in the new future.

http://www.gis-group.com.cn/en/