中文摘要：

手持电子产品的薄型化催生了IC封装无芯基板，它不仅比IC封装有芯基板更薄，而且电气性能更加优越。介绍了IC封装无芯基板的发展趋势和制造中面临的问题。IC封装无芯基板以半加成法制造，翘曲是目前制程中的首要问题。翘曲改善主要依靠改变绝缘层材料和积层结构，可用云纹干涉法进行量测，并以模拟为指导加快开发周期。

英文摘要：

The thinning tendency of the handheld electronic products brought up the coreless substrate for IC Packages. Coreless substrate enables thinner thickness and superior electrical performance than core-contained substrate. Introduce the development trend and problems occurred during the manufacturing process of the coreless substrate. The coreless substrate is manufactured by the semi-additive method, and warpage is the primary problem during the process currently. The reduction of warpage mainly depends on the optimization of the insulated-layer materials and as well the construction of buildup layers. Warpage can be measured by Shadow Moiré method and simulated by FEA software, which can be used as the guidance to accelerate development cycle.