A MICRO SPEAKER INCLUDING A DIRECT DRIVEN VIBRATION PLATE

• Main Author: YOO, OK-JUNG
• Format: Patent
• Language: English; French; Korean
• Published: 06.10.2005
• Edition: 7
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The invention relates to a micro speaker including a directly driven vibration plate having a built-in voice coil patterned using a flexible PCB manufacturing technique. The speaker includes an upper housing, a lower housing, a permanent magnet located between the upper and lower housings, and a vibration plate placed over the permanent magnet and including a metal pattern functioning as a voice coil. The center portion and the peripheral portion of the voice coil are connected without a seam and the portions of the voice coil in which electrical current flows in the same direction are aligned to air gaps between the permanent magnets. L'invention concerne un haut-parleur, qui comprend une plaque vibrante à action directe présentant une bobine mobile intégrée structurée au moyen d'une technique de fabrication de circuit imprimé souple. Le haut-parleur comprend un boîtier supérieur, un boîtier inférieur, une pluralité d'aimants permanents situés entre le boîtier supérieur et le boîtier inférieur, et une plaque vibrante placée sur les aimants permanents et dotée d'une structure métallique fonctionnant comme une bobine mobile. La partie centrale et la partie périphérique de la bobine mobile sont reliées sans soudure, et les parties de la bobine mobile dans lesquelles le courant électrique circule dans le même sens sont alignées par rapport aux espaces situés entre les aimants permanents. The invention relates to a speaker including a direct driven vibration plate having a built-in voice coil patterned using flexible PCB manufacturing technique. The speaker comprises a upper housing, a lower housing, a plurality of permanent magnets located between in the upper and the lower housings and a vibration plate placed over the permanent magnets and including a metal pattern functioning as a voice coil. The center portion and the periphery portion of the voice coil are connected without a seam and the portions of the voice coil where electrical current flows in the same direction are aligned to the spaces between the permanent magnets.