METHOD FOR COATING EMI PAINT OF MOBILE PHONE AND FRONT CASE OF A MOBILE PHONE, CONCERNED WITH OPTIMIZING A DISTRIBUTION PATTERN OF EMI PAINT WITHOUT SACRIFICING RECEIVE SENSITIVITY

摘要

PURPOSE: A method for coating EMI(Electromagnetic Interference) paint of a mobile phone and a front case of the mobile phone are provided to reduce an SAR(Specific Absorption Rate) by optimizing a distribution pattern of EMI paint without sacrificing receive sensitivity. CONSTITUTION: A distribution pattern of EMI paint is formed zigzag successively in a horizontal direction at an inner side surface of a front case of a mobile phone. Measurement of SAR_tot, an SAR value according to electric field in the directions of x, y and z axes, SAR_x, an SAR value according to electric field in the direction of x axis, SAR_y, an SAR value according to electric field in the direction of y, SAR_z, an SAR value according to electric field in the direction of z axis, shows that 1g average SAR(W/Kg) is 1.57 and 10g average SAR(W/Kg) is 0.83. In comparison, if the EMI paint is entirely coated on the front case, 1g average SAR(W/Kg) is 3.04 and 10g average SAR(W/Kg) is 1.58. Therefore, coating the EMI paint zigzag on the front case exhibits the relatively lower SAR value.