About Printed Circuit Boards

The earliest printed circuit boards were paper-based copper-clad printed boards. Since the advent of semiconductor transistors in the 1950s, the demand for printed boards has risen dramatically. Especially with the rapid development and wide application of integrated circuits, the volume of electronic equipment is getting smaller and smaller, and the density and difficulty of circuit wiring are getting higher and higher, which requires continuous updating of printed boards. At present, the variety of printed boards has developed from single-sided boards to double-sided boards, multi-layer boards and flexible boards; the structure and quality have also developed to ultra-high density, miniaturization and high reliability; new design methods, design supplies and Board-making materials and board-making processes continue to emerge. Today's printed circuit boards are mainly composed of lines and patterns, dielectric layers, solder resist inks, silk screens, and surface treatments.

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