Abstract: An integrated circuit package including electrically floating metal lines and a method of forming are provided. The integrated circuit package may include integrated circuit dies, an encapsulant around the integrated circuit dies, a redistribution structure on the encapsulant, a first electrically floating metal line disposed on the redistribution structure, a first electrical component connected to the redistribution structure, and an underfill between the first electrical component and the redistribution structure. A first opening in the underfill may expose a top surface of the first electrically floating metal line.

Abstract: A method of fabricating a semiconductor structure includes the following steps. A semiconductor wafer is provided. A plurality of first surface mount components and a plurality of second surface mount components are bonded onto the semiconductor wafer, wherein a first portion of each of the second surface mount components is overhanging a periphery of the semiconductor wafer. A first barrier structure is formed in between the second surface mount components and the semiconductor wafer. An underfill structure is formed under a second portion of each of the second surface mount components, wherein the first barrier structure blocks the spreading of the underfill structure from the second portion to the first portion.

Abstract: A rear projection system includes a partially transmissive reflector, an image source installed on one side of the reflector for projecting an image to the reflector, a screen for receiving the image projected from the image source and reflected from the reflector so as to display the image, at least one light sensor installed on the other side of the reflector for sensing light of the image projected from the image source to the reflector and passing through the reflector, and a control module coupled to the light sensor for controlling the image source to project a next image according to the sensing result of the light sensor.

Abstract: A front wheel drive mechanism is mounted in a bicycle including a front wheel and two pedals adapted to propel by feet. The mechanism comprises a first transmission assembly connected to the pedals, provided at one side of front wheel, and connected to main frame; a second transmission assembly connected to the front wheel, provided at the other side of the front wheel, and connected to steering assembly; and a coupling device with limited swing capability adapted to transmit pedaling force from the first transmission assembly to the second transmission assembly. The coupling device is interconnected the first and the second transmission assemblies for allowing the first and the second transmission assemblies to dispose in a non-parallel relationship when the bicycle turns curves with the pedaling force transmitted from the first transmission assembly to the front wheel via the second transmission assembly.

Abstract: An image projection system uses multiple light sources to produce light beams reflected by a rotating multilateral drum. Each side mirror on the drum is tilted by a radial angle with respect to adjacent mirrors, and the reflected light beam of each side mirror forms one horizontal scan line. The tilted angle causes the reflected light beam to move vertically. Thus a single rotation of the single drum completes the scanning of a complete frame.

Abstract: A flood light is produced by rotating a divergent reflector or a divergent lens with respect to a light source to produce a flood light at a rate faster then the retention rate of human perception so that the flood light appears to be steady. The assembly of the light source, moving reflector or lens and the driving motor can be enclosed in a conventional light bulb. Alternatively, the light source can be rotated with respect to a fixed ring-shaped convex reflector or ring-shaped convex lens to produce the steady flood light.

Abstract: A backlight for a large area display panel is derived from a remote point light source. A light from the point light source is first reflected by a first reflecting unit to spread the light in one direction. The reflected light from the first reflecting unit is reflected again by a second reflecting unit to spread the light in another direction. The spread light from the second reflecting unit is projected behind the display panel screen to furnish the backlight. The reflecting surfaces are fabricated with a ladder convex gratings, a ladder concave gratings, a ladder slant gratings or a matrix array of domes.

Abstract: Invisible different monochromatic images are inscribed in a diffractive optical element. Each of the images appears when a specific light source is on and image disappears when the specific light is off. The light sources for the different monochromatic images are spaced at different positions with respect to the diffractive optical element. A dynamic image is produced by time-varying and electronically controlling the intensity and on/off of the different light sources.

Abstract: The light emitted from a bank of light emitting diodes is converted through a set of lenses into parallel light beams, which, in turn, is focused or diversified as projection light source. Such a light source can replace traditional incandescent bulb. Reflection mirrors can be used to deflect or reflect the light beams. Phosphorescent material can be added in the transmission path to convert blue or ultraviolet short wave light into white light.

Abstract: Invisible diff&rent monochromatic images are inscribed in a diffractive optical element. Each of the images appears when a specific light source is on and image disappears when the specific light is off. The light sources for the different monochromatic images are spaced at different positions with respect to the diffractive optical element. A dynamic image is produced by time-varying and electronically controlling the intensity and on/off of the different light sources.

Abstract: A structure of a board-like frame comprising a board body having a board surface being provided with a plurality of recessed grooves. By folding along the recessed groove, the board body can form into sealed frame having a circular-shaped cross section, a rectangular cross-section, or a polygonal cross-section, and alternatively the board body can be folded into a “C”-shaped or “L”-shaped opened frame structure.