Patent ID: 7940944
Filing Date: 2011-05-10
Classification: H04R

Abstract:
1. A directional silicon condenser microphone comprising: a case having a front sound hole for passing through a front sound; an acoustic delay device for delaying a phase of a sound; a substrate; a chamber case located on top of the substrate; a Micro Electro Mechanical System (MEMS) chip having an additional back chamber formed by the chamber case; an application specific integrated circuit (ASIC) chip for operating the MEMS chip; a conductive pattern for bonding the substrate to the case; the substrate including a rear sound hole for passing through a rear sound; a fixing means for fixing the case to the substrate; and an adhesive for bonding the case and the substrate, wherein the adhesive is applied to an entirety of a bonding surface of the case and the substrate fixed by the fixing means.