Abstract: A circuit board assembly in an electronic is disclosed. To conserve space in the electronic device, the circuit board assembly includes stacked circuit boards in electrical communication with each other, such as a first circuit board stacked over a second circuit board. Each circuit board may include multiple surfaces that carry operational components. Moreover, the first circuit board may include a first surface and the second circuit board may include a second surface facing the first surface. The first and second surfaces may include operational components in corresponding locations. Also, the operational components may include corresponding shapes such that one component is positioned in another component. The components may electrically connect to each other. Also, the circuit board assembly may include EMI shields around an outer perimeter in order to shield the operational components form EMI and to components in the electronic device from EMI emanating from the operational components.

Abstract: A circuit board assembly in an electronic is disclosed. To conserve space in the electronic device, the circuit board assembly includes stacked circuit boards in electrical communication with each other, such as a first circuit board stacked over a second circuit board. Each circuit board may include multiple surfaces that carry operational components. Moreover, the first circuit board may include a first surface and the second circuit board may include a second surface facing the first surface. The first and second surfaces may include operational components in corresponding locations. Also, the operational components may include corresponding shapes such that one component is positioned in another component. The components may electrically connect to each other. Also, the circuit board assembly may include EMI shields around an outer perimeter in order to shield the operational components form EMI and to components in the electronic device from EMI emanating from the operational components.

Abstract: Board assemblies with minimized warpage and systems and methods for making the same are disclosed. A board may be pre-conditioned by designing the board to mount components in selected areas of the board and by selectively copper flooding certain regions of the board. Pre-conditioning of the board may assist in preventing board warpage. A reflow fixture may fix a board during solder pasting and reflow processing thereof. After reflow, an underfill fixture may fix the board during underfill processing. Each of these fixtures may include respective clamp members that may hold various portions of the board to correct and/or prevent warpage of the board.