US Patent 7420821 Electronic module and driving circuit board therefor

An electronic module includes an electronic circuit substrate, and a plurality of driving circuit boards attached to a terminal region of the electronic circuit substrate while being arranged adjacent to one another in the x direction. The driving circuit boards are electrically connected to one another. Adjacent driving circuit boards are electrically connected to each other by only substrate terminals provided on the electronic circuit substrate, with the connection resistance therebetween being about 10 Ω or less.