摘要:
A transmitting-type liquid crystal display projection system including a planar light source which emits planar white beam or planar R/G/B beams in succession is provided. A first polarization filter receives the planar light source and polarizes the same to be in a first polarization state. A liquid-crystal light valve receives the polarized planar light source, and converts the first polarization state to a second polarization state having a corresponding gray level. A second polarization filter receives a light output from the liquid crystal light valve to produce a second polarization light beam. A projection unit projects the second polarization light beam onto a display plane. Using the same planar light source, a polarization beam splitting (PBS) device with a refection-type liquid crystal light valve can be used to achieve the reflection-type projection system.
摘要翻译:提供了一种发射型液晶显示投影系统,其包括平面光源,其连续地发射平面的白光束或平面的R / G / B光束。 第一偏振滤光器接收平面光源并使其偏振成第一偏振状态。 液晶光阀接收极化平面光源,并将第一偏振态转换为具有相应灰度级的第二偏振状态。 第二偏振滤波器接收从液晶光阀输出的光,以产生第二偏振光束。 投影单元将第二偏振光束投影到显示平面上。 使用相同的平面光源,可以使用具有反射型液晶光阀的偏振分束(PBS)装置来实现反射型投影系统。
摘要:
A light source with LED and optical protrusions is provided. It comprises an optical panel and at least one optical plate. The light source can be used together with a heat sink or an optical element to enhance its performance. The optical panel forms an optical surface having plural optical protrusions to reflect and mix lights emitted from the LEDs. The optical plate is inserted into at least one slot on the optical panel, and it comprises a heat dissipation core plate and at least one electric circuit layer. The electric circuit layer comprises LEDs and at least one control circuitry. The electric circuit layer can be attached to either single side or both sides of the heat dissipation core plate. The invention achieves good uniformity and high intensity of the combined lights with desired chromaticity.
摘要:
A light-emitting-diode packaging structure having thermoelectric device, which is applied to the LED unit packaged using the flip chip technology. This is realized by directly building the thermoelectric elements into the solder bump layer of the light-emitting-diode packaging structure to replace a part of the solder bumps, as such raising the heat dissipation efficiency of the light emitting diode unit, enhancing the stability and reliability of light emission of the LED unit, and reducing the difficulties and complexity of the integration of the LED package.
摘要:
A measuring apparatus including a first chip, a first circuit layer, a first heater, a first stress sensor and a second circuit layer is provided. The first chip has a first through silicon via, a first surface and a second surface opposite to the first surface. The first circuit layer is disposed on the first surface. The first heater and the first stress sensor are disposed on the first surface and connected to the first circuit layer. The second circuit layer is disposed on the second surface.
摘要:
A fabricating method and a testing method of a semiconductor device and a mechanical integrity testing apparatus are provided. An object includes a wafer, an insulating layer, and a plurality of conductive posts is provided. A surface of the wafer has a plurality of first blind holes outside chip regions and a plurality of second blind holes inside the chip regions. The insulating layer is between the conductive posts and the walls of the first blind holes and between the conductive posts and the walls of the second blind holes. A mechanical integrity test is performed to test a binding strength between the insulating layer, the conductive posts, and the walls of the first blind holes. The conductive posts in the chip regions are electrically connected to an element after the conductive posts in the first blind holes are qualified in the mechanical integrity test.
摘要:
A measuring apparatus including a first chip, a first circuit layer, a first heater, a first stress sensor and a second circuit layer is provided. The first chip has a first through silicon via, a first surface and a second surface opposite to the first surface. The first circuit layer is disposed on the first surface. The first heater and the first stress sensor are disposed on the first surface and connected to the first circuit layer. The second circuit layer is disposed on the second surface. The first heater comprises a plurality of first switches connected in series to generate heat.
摘要:
A heat-pipe electric power generating device including a fan disposed between an evaporating end and a condensing end of a heat-pipe is provided. A magnetic substance is disposed on the fan to form a magnetic field. A stator coil of a generator is disposed at the outer of the heat-pipe, which is corresponding to the position of the fan. An induced current is generated by the stator coil of the generator when the magnetic substance spins. Since the heat-pipe is made of copper, and the magnetic field is not shielded by copper, a current is induced when a relative motion between the magnetic substance on the fan and the stator coil of the generator at the outer of the heat-pipe is generated. Further, the heat-pipe electric power generating device can be applied on a hydrogen/oxygen gas generating apparatus and an internal combustion engine system of a motor vehicle.
摘要:
A light-emitting device may include a heat-dissipating base, a light-emitting unit, a housing, and a first conductive contact and a second conductive contact. The heat-dissipating base has a top portion and a bottom portion. The bottom portion of the heat-dissipating base may include an exposed heat-dissipation surface. The light-emitting unit is over the top portion of the heat-dissipating base and is arranged to provide heat conductivity at least from the light-emitting unit to the heat-dissipating base. The light-emitting unit may include at least one light-emitting diode for emitting light and a first electrode and a second electrode. Heat may be generated as the light-emitting diode emits light, and the at least one light-emitting diode may have power input terminals for receiving power input to the at least one light-emitting diode. The power input may include one of an alternating-current input and a direct-current input. The first electrode and the second electrode are electrically coupled with the input terminals of the at least one light-emitting diode. The housing encloses at least a portion of the light emitting unit and covers the top portion of the heat-dissipating base. The first conductive contact and the second conductive contact are near or below a portion of the heat-dissipating base and are configured to receive external power supply. The first conductive contact may be electrically coupled with the first electrode, and the second conductive contact may be electrically coupled with the second electrode.
摘要:
An LED lamp includes LED chips, an axle, and a lampshade. The LED chips are mounted on surface of the axle. The axle which is coupled to the lampshade includes heat pipes for transferring the heat generated by the LED chips to exterior of the lampshade and obtaining a better heat dissipation.
摘要:
A light source with LED and optical protrusions is provided. It comprises an optical panel and at least one optical plate. The light source can be used together with a heat sink or an optical element to enhance its performance. The optical panel forms an optical surface having plural optical protrusions to reflect and mix lights emitted from the LEDs. The optical plate is inserted into at least one slot on the optical panel, and it comprises a heat dissipation core plate and at least one electric circuit layer. The electric circuit layer comprises LEDs and at least one control circuitry. The electric circuit layer can be attached to either single side or both sides of the heat dissipation core plate. The invention achieves good uniformity and high intensity of the combined lights with desired chromaticity.