Abstract: A method includes dispensing sacrificial region over a carrier, and forming a metal post over the carrier. The metal post overlaps at least a portion of the sacrificial region. The method further includes encapsulating the metal post and the sacrificial region in an encapsulating material, demounting the metal post, the sacrificial region, and the encapsulating material from the carrier, and removing at least a portion of the sacrificial region to form a recess extending from a surface level of the encapsulating material into the encapsulating material.

Abstract: A semiconductor device has a conductive via laterally separated from the semiconductor, an encapsulant between the semiconductor device and the conductive via, and a mark. The mark is formed from characters that are either cross-free characters or else have a overlap count of less than two. In another embodiment the mark is formed using a wobble scan methodology. By forming marks as described, defects from the marking process may be reduced or eliminated.

Abstract: A chip package structure is provided. The chip package structure includes a chip structure. The chip package structure includes a first ground bump below the chip structure. The chip package structure includes a conductive shielding film disposed over the chip structure and extending onto the first ground bump. The conductive shielding film has a concave upper surface facing the first ground bump.

Abstract: An image display method for a portable display device to be implemented by a processing module includes: controlling the portable display device to display an image in a default position within a display area; estimating a displacement distance of the portable display device during an (X+1)th unit time period, based at least on a number (N) of displacement distances of the portable display device respectively during (N) number of immediately previous unit time periods or on accelerations of the portable display device respectively associated with (X?1)th and (X)th unit time periods; and controlling the portable display device to shift the image with respect to the display area based on the displacement distance estimated thereby.

Abstract: An image display method for a portable display device to be implemented by a processing module includes: controlling the portable display device to display an image in a default position within a display area; estimating a displacement distance of the portable display device during an (X+1)th unit time period, based at least on a number (N) of displacement distances of the portable display device respectively during (N) number of immediately previous unit time periods or on accelerations of the portable display device respectively associated with (X?1)th and (X)th unit time periods; and controlling the portable display device to shift the image with respect to the display area based on the displacement distance estimated thereby.

Abstract: The driving and dimming control device for illuminator includes an AC power input end connecting to a phase dimmer, a DC power output end for connecting to a lighting load, a rectifier connecting to the AC power input end, a pulse width modulator connecting to a transformer, a voltage/current detector, a photo-coupler connecting between the voltage/current detector and pulse width modulator, and a low-voltage-input locking circuit connecting between an output terminal of the phase dimmer and pulse width modulator. The low-voltage-input locking circuit includes a locking switch and a reset switch. The signals input to the pulse width modulator are locked by the locking switch to prohibit the pulse width modulator from hiccupping. Thus the DC output power can be stabilized.