Abstract: A pixel circuitry for a display apparatus is provided herein. The pixel circuitry includes a first storage element, and a switching element composed of a plurality of switches. The first storage element has a first terminal receiving a pixel signal and a second terminal coupled to a first voltage. The first storage element is used for storing the pixel signal. The switching element includes a first switch and a second switch respectively conducted in response to a first signal and a second signal. Each of the first switch and the second switch has an input terminal coupled to a data line and an output terminal coupled to the first storage element. The cooperation of the first switch and the second switch has benefit of delivering the pixel signal without influence of body effect.

Abstract: An AMOLED panel includes an AMOLED pixel unit, a scan driving unit and a data driving unit. The scan driving unit is coupled to the AMOLED pixel unit. The data driving unit is coupled to the AMOLED pixel unit and a voltage source and includes a switch and a DC-to-AC converter. The switch has a first terminal coupled to the AMOLED pixel unit and a second terminal coupled to the voltage source. The DC-to-AC converter has n+1 bytes, wherein n is a positive integer. The DC-to-AC converter is coupled to a control terminal of the switch and outputs a variable voltage to turn on the switch to make the switch generate a data current. The DC-to-AC converter changes a magnitude of the variable voltage to control a magnitude of the data current.

Abstract: Residual direct-current charges may be accumulated and distributed non-uniformly on the built-in color filters in a displaying panel such as the liquid-crystal-on-silicon displaying device, and thus results in the non-uniformity of the internal electric field that controls the arrangement of liquid crystal molecules. To reduce residual direct-current charges so as to cause the internal electric field to be substantially uniform, the present invention provides a structure of the display panel including a plurality of shields for respectively enclosing a plurality of color filters, wherein each shield is connected to a corresponding pixel electrode by a conductive wire.

Abstract: The invention relates to an LED current driving system. The LED current driving system comprises an LED driver. The LED driver comprises at least one LED driving unit for outputting a driving current to an LED. Each LED driving unit comprises a plurality of current sources and a plurality of switches. The switches are connected to the corresponding current source. Each switch controls the ON/OFF state of the corresponding current source in accordance with the duty cycle control signal and a current control signal. Therefore, by integrating the LED driver on the LCOS panel, the LED current driving system of the invention can decrease the pin number of the LCOS chip, the overall area and the system cost so as to improve the yield of the LED current driving system. Besides, the LED current driving system utilizes the current sources to form the driving current to stably and precisely control the driving current flowing through the corresponding LED so that the color quality of the image can be improved.

Abstract: A color filter array suitable for a display panel is provided. The color filter array includes a first pixel, a second pixel, a third pixel and a forth pixel. The first pixel is consisted of a green filter, a blue filter and a transparent filter. The second pixel is consisted of a red filter, a blue filter and a transparent filter. The third pixel is consisted of a red filter, a green filter and a transparent filter. The fourth pixel is consisted of a red filter, a blue filter and a green filter. The architecture of the color filter array is able to increase the image brightness of the display panel.

Abstract: A liquid crystal panel includes a first substrate having thereon a display active region; an inner spacer wall disposed on the first substrate along periphery of the display active region; an outer spacer wall disposed adjacent to the inner spacer wall on the first substrate; a groove formed between the inner spacer wall and the outer spacer wall; a seal spread in the groove; a second substrate being supported by the inner spacer wall and the outer spacer wall and being glued to the first substrate via the seal, wherein the first substrate, the second substrate and the inner spacer wall define a chamber; and a liquid crystal layer filling the chamber by using one-drop-fill process.

Abstract: A connection testing apparatus, a connection testing method, and a chip using the same are provided. The method can be used for testing connections between chips, so as to solve the problems that a conventional multi-chip connection test needs a plenty of test patterns, resulting in a long test time and a high test cost, and the condition of a connection failure is hard to be analyzed after a test failure. In the present invention, a voltage variation caused when an ESD element in a chip is conducted and a comparison circuits are used to determine whether a connection is correct. Furthermore, the test apparatus is built in the chip, so that the connection test may be accomplished quickly and efficiently. Once a connection failure occurs, the failed connection pin can also be found, so as to be favorable for engineering analysis and thereby effectively saving the test cost.

Abstract: A liquid crystal on silicon integrated circuit (LCOS IC) and electronic device using the same is provided. The electronic device comprises an LCOS IC, a processor and a cooler. The LCOS IC comprising a temperature sensor embedded in the LCOS IC for sensing a temperature and outputting a temperature sensing signal according to the temperature. The processor is coupled to the LCOS IC for receiving the temperature sensing signal and outputting a cooler control signal according to the temperature sensing signal. The cooler is coupled to the processor for receiving the cooler control signal and adjusting the cooler accordingly.

Abstract: An LCOS panel module including a substrate, a flexible printed circuit (FPC), an LCOS panel, and a face mask is provided. The substrate has an adhesive region on a surface thereof The FPC is disposed on the substrate and has an opening for exposing the adhesive region. The LCOS panel has a bottom surface and a top surface. The bottom surface of the LCOS panel is fixed on the adhesive region of the substrate exposed from the opening through an adhesive layer and is electrically connected to the FPC. The face mask used for framing the display region of the LCOS panel and sheltering from stray light is disposed on the LCOS panel and has a display opening. A display region of the top surface of the LCOS panel is exposed from the display opening of the face mask.

Abstract: An LED package including a carrier, a LED chip, and a lens is provided. The LED chip is disposed on the carrier. The lens is disposed on the carrier and above the LED chip. A gap is formed between the LED chip and the lens. The lens has a first surface, a second surface, a protrusion, and at least one protruding ring. The first surface faces the LED chip. The second surface is opposite to the first surface. The protrusion is located at the first surface. The protruding ring is located at the first surface and surrounds the protrusion.

Abstract: A pixel unit and driving method thereof are disclosed. The pixel unit includes a switch, a storage element and a first multiplexer. The switch develops a charge transfer path according to a scan signal associated with a scan line. The storage element has a first electrode coupled to the switch and a second electrode coupled to a reference voltage for receiving a pixel voltage via the charge transfer path. The first multiplexer is coupled to the second electrode of the storage element for selectively providing the reference voltage with a default value and the reference voltage with a determined value to the second electrode of the storage element according to a modulating signal. The driving method enlarges the voltage range of the first electrode of the storage element for enhancing the contrast ratio of the display panel.

Abstract: A heating system for a display panel is provided herein, wherein the display panel has a display area. The heating system includes a sensor, a temperature controlling device, and a heating element. The sensor is used for sensing the temperature of the display panel. The temperature controlling device provides a control signal according to the temperature of the display panel. The heating element heats the display panel according to the control signal, and the heating element is a patterned circuitry disposed on a peripheral region of the display area.

Abstract: A system and method for driving a LED is disclosed. The system is switched in turn between a constant-current mode circuit and a constant-voltage mode circuit. Accordingly, the forward voltage of the LED could be maintained constant, and the efficiency in power consumption could be substantially increased.

Abstract: A gamma reference voltages generating circuit is disclosed in the present invention. The gamma reference voltages generating circuit comprises a voltage provider, a plurality of first digital-to-analog converters and a plurality of second digital-to-analog converters. The voltage provider generates a plurality of first supply voltages and a plurality of second supply voltages according to a first gamma reference voltage. The first digital-to-analog converters are electrically coupled to the first supply voltages for generating a plurality of second gamma reference voltages. The second digital-to-analog converters are electrically coupled to the second supply voltages for generating a plurality of third gamma reference voltages.

Abstract: An optical system, adapted for providing an image beam, including a light source, a beam splitting/combining device, and a light valve is provided. The light source provides an illumination beam. The beam splitting/combining device includes a first polarizing beam splitter (PBS), a second PBS, a quarter wave plate (QWP), and a reflector. The first PBS reflects a first illumination beam of the illumination beam from the light source and the second illumination beam from the light source passes through the first PBS. The second illumination beam from the first PBS passes through the second PBS and the QWP, reflected by the reflector, passes through the QWP, and reflected by the second PBS. The light valve converts the first illumination beam from the first PBS and the second illumination beam reflected by the second PBS into the image beam.

Abstract: An illumination unit for emitting light along an optic axis for a projection system includes an LED die and a collimator lens. The collimator lens includes a central part and a peripheral part. The central part has a first light transmission surface and a second light transmission surface opposite to the first light transmission surface. The peripheral part which is around the central part has an inner refraction wall coupled to the first light transmission surface to form a hollow for situating the LED die, an outer reflection wall opposite to the inner refraction wall, and a refraction surface connecting to the second light transmission surface and the outer reflection wall. Both the central part and the peripheral part of the collimator lens are rotationally asymmetrical corresponding to the optic axis.

Abstract: A pixel circuitry for a display apparatus and a driving method thereof are provided. The pixel circuitry includes a storage element, a scan switch, a first control circuit and a second control circuit. The scan switch delivers a pixel signal to the storage element in response to a scan signal during a frame period. The storage element having a first terminal and a second terminal is used for storing the pixel signal. The first control circuit selectively provides a reference voltage to one of the first and the second terminals of the storage element. The second control circuit selectively connects a pixel electrode to one of the first and the second terminals of the storage element. Under the control of the first and the second control circuits, the polarity of the pixel signal stored in the storage element can be changed by adjusting two terminal voltages of the storage element.

Abstract: An optical engine including a light source, a polarizing beam splitter (PBS), a multi-focus lens, and a light valve is provided. The light source is capable of emitting an illumination beam. The PBS is disposed on the light path of the illumination beam. The multi-focus lens is disposed on the light path of the illumination beam between the light source and the PBS, and has a plurality of refractive portions. The refractive portions have different effective focal lengths from one another. The PBS allows at least a part of the illumination beam with a first polarization direction to travel to the light valve. The light valve is capable of reflecting the part of the illumination beam and converting the part of the illumination beam into an image beam with a second polarization direction. The image beam from the light valve travels to the PBS.

Abstract: The LCoS panel includes a display region, an odd and an even data drivers, and a data-line testing unit. The display region includes a plurality of pixel cells formed at each intersection of a plurality of scan lines and a plurality of data lines. The data lines include a plurality of odd data lines coupled to a plurality of first data channels of the odd data driver, and the data lines include a plurality of even data lines coupled to a plurality of second data channels of the even data driver. The odd and the even data drivers are arranged in a first side of the display region. The data-line testing unit is arranged in a second side of the display region opposite to the first side for selectively outputting a data-line testing signal corresponding to one of the data lines according to a data-line selecting signal.

Abstract: A projection system including an illumination unit, a polarization conversion unit, a light valve, a projection lens, and a polarizing beam split (PBS) element is provided. The polarization conversion unit includes a V-shaped PBS element, a wave plate, and two reflective surfaces. The V-shaped PBS element includes a first PBS portion and a second PBS portion. The first PBS portion is adapted to be passed through by a first partial beam with a first polarization direction and reflect a second partial beam with a second polarization direction. The second PBS portion is adapted to be passed through by a third partial beam with the first polarization direction and reflect a fourth partial beam with the second polarization direction. The wave plate is disposed in the transmission paths of the first partial beam and the third partial beam. The reflective surfaces are located at opposite sides of the V-shaped PBS element.