Abstract: A method includes forming a reconstructed wafer including encapsulating a device die in an encapsulant, forming a dielectric layer over the device die and the encapsulant, forming a plurality of redistribution lines extending into the dielectric layer to electrically couple to the device die, and forming a metal ring in a common process for forming the plurality of redistribution lines. The metal ring encircles the plurality of redistribution lines, and the metal ring extends into scribe lines of the reconstructed wafer. A die-saw process is performed along scribe lines of the reconstructed wafer to separate a package from the reconstructed wafer. The package includes the device die and at least a portion of the metal ring.

Abstract: An LED display device for displaying a pattern on a rotatable object by light-scanning; wherein when the rotating object rotates with a high speed, the pattern will display; the device comprising: a display device for displaying at least one pattern; the display device being fixed without rotation in operation; the display device including a screen, a processor and a memory; the processor serving to control displaying of patterns on the display device; the memory serving to store patterns to be displayed and other processing programs; a rotating printed circuit board having at least one bank of LEDs; a control circuit board controlling electric conduction of each LED; and an image scanner connected to the control circuit board; the image scanner can scan through the screen of the display device so as to sense the pattern on the screen.

Abstract: A red light identification coated lens has a lens body and a coating film. The coated lens filters light with wavelength of 380 to 600 nm with a transmission ratio of 10 to 50% and passing red light fully. Moreover, a car-used red light identification system is provided, which is suitable for rainy day or fog day and comprises: at least one red light source arranged to a car; and at least one coated lens as above said. Red light has a long wavelength and low reflection rate so that red light can passes through the water drops easily with very low reflection, low scattering and low deflection. Thereby, when a driver wears the coated lens of the present invention, he (or she) can see the image of red light clearly.

Abstract: A dust collecting cover assembly capable of being covered upon a blade comprises a rotary disk having an axial hole for connecting with other elements; at least one blade set having at least one blade which is extended from the rotary disk; a rotary shaft having one end pivotally to the axial hole of the rotary disk for pivotally connecting with other driving elements; a driving device connected to another end of the rotary shaft directly or indirectly for driving the rotary shaft to rotate so that the blades also rotate; and at least one dust collection cover being covered or adhered to the blade.

Abstract: An LED display device for displaying a pattern on a rotatable object by light-scanning; wherein when the rotating object rotates with a high speed, the pattern will display; the device comprising: a display device for displaying at least one pattern; the display device being fixed without rotation in operation; the display device including a screen, a processor and a memory; the processor serving to control displaying of patterns on the display device; the memory serving to store patterns to be displayed and other processing programs; a rotating printed circuit board having at least one bank of LEDs; a control circuit board controlling electric conduction of each LED; and an image scanner connected to the control circuit board; the image scanner can scan through the screen of the display device so as to sense the pattern on the screen.

Abstract: An electronic LED display device for displaying a pattern on a rotatable object; wherein when the rotating object rotates with a high speed, the pattern will display; the device comprises a printed circuit board on the rotatable object is arranged with a bank of light emitting diodes; a speed detection sensor for detecting speeds of the rotatable object; a memory storing with at least one pattern and algorithms for displaying; a processor being a controlling center; the processor receiving signals from the synchronous unit; wherein the processor processing a simulation calculation for displaying the light emitting diodes by using a simulated projection line to be projected to the pattern; and a current controller receiving signals from the processor; the current controller controlling on-and-off operation of each of the light emitting diodes in the printed circuit board.

Abstract: An LED display device for displaying a pattern on a rotatable object is disclosed. When the rotating object rotates with a high speed, the pattern will be displayed. The device comprises a first printed circuit board on the rotatable object; at least one bank of light emitting diodes being arranged on the first printed circuit board; a second printed circuit board having a bank of elastic sheets; a third printed circuit board having a conductive pattern thereon; the third printed circuit board do not rotate with the rotatable object. The first printed circuit board and second printed circuit board will rotate with the rotatable object; and the elastic sheets are capable of being in contact with the pattern of the third printed circuit board; and each elastic sheet is connected to a corresponding LED; and the third printed circuit board is connected to all the light emitting diodes.

Abstract: An LED display device for displaying a pattern on a rotatable object is disclosed. When the rotating object rotates with a high speed, the pattern will be displayed. The device comprises a first printed circuit board on the rotatable object; at least one bank of light emitting diodes being arranged on the first printed circuit board; a second printed circuit board having a bank of elastic sheets; a third printed circuit board having a conductive pattern thereon; the third printed circuit board do not rotate with the rotatable object. The first printed circuit board and second printed circuit board will rotate with the rotatable object; and the elastic sheets are capable of being in contact with the pattern of the third printed circuit board; and each elastic sheet is connected to a corresponding LED; and the third printed circuit board is connected to all the light emitting diodes.

Abstract: A radio-frequency apparatus with electrostatic discharge (ESD) protection is provided. The radio-frequency apparatus including an antenna, an inductor, a capacitor and a radio-frequency circuit receives a radio-frequency signal by the antenna. When the radio-frequency signal is transmitted to the radio-frequency apparatus, an electrostatic signal may invade into the radio-frequency apparatus via the antenna. Here, the radio-frequency signal can be transmitted and the electrostatic signal can be blocked by the capacitor, while the radio-frequency signal can be blocked and the electrostatic signal can be transmitted by the inductor. Therefore, when an ESD event occurs, the electrostatic signal is transmitted to ground through the inductor. Furthermore, the impedance value of the capacitor remains in a first range and that of the inductor remains in a second range, such that the electrostatic signal with a specific voltage is blocked by an impedance matching circuit formed by the capacitor and the inductor.