Abstract: A backlight module includes a back plate, a light guide plate, a heat insulation layer, a heat dissipation member, and a light source device. The back plate has a first surface, a second surface opposite to the first surface, and an opening passing through the back plate. The light guide plate is disposed on the first surface, the heat insulation layer is disposed on the second surface, and the heat dissipation member is disposed on the heat insulation layer. The light source device is connected to the heat dissipation member and protrudes from the first surface to face the light guide plate through the opening.

Abstract: A pivoting apparatus includes first and second pivoting elements, and first and second waterproof structures. The first pivoting element is fixed to a base, and has a first internal space and an opening exposing the first internal space. The second pivoting element is pivoted on the first pivoting element and fixed to an electronic device. A second internal space and a gap exposing the second internal space are formed between the first and second pivoting elements. The second internal space communicates with the first internal space through the opening. The first waterproof structure is fixed to the first pivoting element and surrounds at least a portion of the opening to block liquid from entering the first internal space through the opening. The second waterproof structure is fixed to the second pivoting element and shields the gap to block liquid from entering the second internal space through the gap.

Abstract: A flat light source module including a light guide plate, a flexible circuit board and a light emitting device is provided. The light guide plate has a light incident surface, a light exit surface and a bottom surface opposite to the light exit surface, wherein the light incident surface further includes a light incident curved surface, and the light incident curved surface is connected with the light exit surface and the bottom surface. The flexible circuit board is disposed beside the light incident curved surface along the light incident curved surface of the light guide plate. The light emitting device is disposed on the flexible circuit board, and the light emitting device has a light emitting surface facing the light incident curved surface.

Abstract: A transform model is established by the calibration system for color transformation between a first color space and a second color space. Three first target curves are defined and transformed by the transform model so as to establish three look-up tables. The display is calibrated according to the three look-up tables such that the color temperature of the display may be substantially constant for every gray-level.

Abstract: A self-oscillating inverter provides an output voltage with fixed operating frequency and amplitude independently of a load. First and second switching elements are arranged in a half-bridge configuration. A resonant circuit having a primary winding of a resonant inductor and a resonant capacitor is coupled between the switching elements. A clamping circuit limits the voltage across the resonant capacitor to a predetermined maximum value, and along with the resonant capacitor defines a capacitance compensation circuit having an equivalent capacitance greater than that of the resonant capacitor alone, wherein the actual resonant frequency of the inverter is less than the natural frequency of the resonant circuit such that soft-switching is assured. An output voltage across the resonant inductor during steady-state operation is a quasi-square waveform with a fixed amplitude, wherein a load voltage across a secondary winding of the inductor is also a quasi-square waveform with a fixed amplitude.

Abstract: A power line communication system transmits a dimming level to an electronic ballast to regulate the power consumed by a lamp. The power line controller has a notch generation circuit that generates notches on an AC power signal with a time duration in accordance with the dimming level of the lamp. A dimming interface associated with the electronic ballast detects the notches on the AC power signal. The dimming interface generates a ballast dimming level signal with a signal level related to the time duration of these notches.

Abstract: A touch display device including a touch module, a display module, a tape, and an optical clear resin is provided. The display module has a polarizer. The tape is installed between the touch module and the display module, wherein a thickness of the tape is larger than a thickness of the polarizer. The tape surrounds a margin of the display module to form an accommodating space with the polarizer. The optical clear resin is disposed in the accommodating space. The touch module and the display module are adhered to each other by the optical clear resin.

Abstract: A lighting device such as an electronic ballast or LED driver includes a power factor correction (PFC) controller responsive to input power supply signals to generate control signals, a PFC boost converter responsive to said control signals to generate a boosted output voltage, and a fast start circuit with a power supply source and an energy storage device, a magnitude of the input power supply signal corresponding to energy stored in the energy storage device. During a first mode, the fast start circuit responds to a rectified mains input to enable the power supply source and charge the energy storage device. During a second mode, the fast start circuit responds to a magnitude of the power supply signal to disable the power supply source and discharge the energy storage device. The boost converter during the second operating mode maintains controller operation while the power supply source is disabled.

Abstract: A pellet having a microstructure including a bismuth phase, a zinc solid solution phase, and a Zn3Hg phase is disclosed. A method of making a pellet including bismuth, zinc, and mercury is also disclosed. Moreover, a fluorescent lamp with a fill material including bismuth, zinc, and mercury is disclosed. Further, a method of dosing a fluorescent lamp with mercury is disclosed.

Abstract: A control signal interface circuit includes a line voltage protection circuit coupled to first and second input terminals. The protection circuit provides an input DC voltage across the input terminals within a predetermined range (i.e., 0-10 Vdc) and prevents the application of an input line voltage (i.e., 347 Vac) across the input terminals. A first current source circuit is coupled to the protection circuit, an isolation circuit is coupled to the first current source circuit and a second current source circuit is coupled to the isolation circuit. The first and second current source circuits collectively provide a linear output DC voltage with respect to the input DC voltage. At least one of the first and second current source circuits include circuitry wherein the linear conversion of the input DC voltage to the output DC voltage is independent of the temperature.

Abstract: A backlight module provided includes a light source, a first light-guided plate, and a second light-guided plate stacked on the first light-guided plate. The first light-guided plate includes a plate body and an extension disposed on an edge of the plate body and extending towards the second light-guided plate aside a lateral side of the second light-guided plate. The plate body and the extension form a seamless light incident surface. The extension has a reflection surface. The reflection surface connects the light incident surface or the surface of the plate body. The light source is disposed at a light incident surface of the first light-guided plate for projecting light into the light-guided plate.

Abstract: The present invention provides a backlight module including a plurality of illuminant units and two light guide plates respectively arranged at two opposite sides of the illuminant units. Each of the light guide plates has a light-incident surface and a light-emitting surface adjacent to the light-incident surface. A portion of the illuminant units emit light toward the light-incident surface of one of the light guide plates, and the other portion of the illuminant units emit light toward the light-incident surface of the other light guide plate. The dimension of the light-emitting surface of each light guide plate is positive proportional to the amount of the illuminant units emitting light toward the light guide plate. In addition, the present invention also provides a liquid crystal displaying apparatus including the above-mentioned backlight module.

Abstract: A lighting device and a method for adjusting the sensing region thereof are provided. The lighting device includes a sensing device and an illumination unit. The sensing device is configure to detect whether an object is located at a first manipulating region or a second manipulating region so as to correspondingly emit a control signal, in which the first manipulating region and the second manipulating region are not overlapped by each other and are disposed in the sensing region along a sensing direction of the sensing device. The sensing device adjusts a shortest distance between the sensing region and the sensing device and a sensing range of the sensing region according to a first adjustment signal and a second adjustment signal. The illumination unit is coupled to the sensing device and adjusts the optical characteristic according to the control signal.

Abstract: A lamp ballast is provided for igniting and operating an HID lamp. A buck inverter circuit includes a pair of high-frequency and a pair of low-frequency switches. A capacitor and an inductor are series-connected between a first node between the low frequency switches and a second node between the high frequency switches. A lamp igniting circuit is coupled between the first node and a first lamp output terminal, and a second lamp output terminal is coupled to a third node between the capacitor and the inductor. A control circuit turns on and off the switches to regulate low frequency square wave voltage generated across the lamp output terminals to be less than an input DC voltage from the positive rail, wherein the buck inverter operates in either of a critical discontinuous mode or a discontinuous mode during an open circuit operation, and in a critical discontinuous mode during other operations.

Abstract: A light guide apparatus for a backlight module is disclosed, which includes a light guide plate, a circuit having a plurality of conductive contacts integrated with the light guide plate, and a light source disposed on the light guide plate and electrically contacted to the plurality of conductive contacts.

Abstract: A control method is applied to a touch display system. The touch display system includes a display module, a touch module, and a programmable circuit. The programmable circuit is electrically connected between the touch module and the display module for executing the control method. The method includes: the touch module providing a first sense area; detecting whether the first sense area being touched or not; the display module displaying an boot image when the first sense area being touched; providing a second sense area after the boot image being displayed; detecting whether the second sense area being touched or not; and the display module displaying an on-screen display menu when the second sense area being touched, wherein the on-screen display menu includes a power item and a plurality of function items.

Abstract: A backlight module includes an outer cover, a heat dissipation plate, a frame, a light guide plate, a back plate, and a light source. The outer cover includes a side wall. The heat dissipation plate is disposed within the outer cover and has a flat plate-shaped first end. The frame is disposed within the outer cover. The light guide plate is disposed between the heat dissipation plate and the frame. The back plate is disposed within the outer cover and has a flat plate-shaped second end parallel to the first end of the heat dissipation plate. The light source is disposed on the first end of the heat dissipation plate and has a substrate and a light emitting diode element. The substrate is perpendicular to the first end of the heat dissipation plate. The first end of the heat dissipation plate and the substrate are adjacent to the side wall.

Abstract: A display device includes a display panel having an active display area, an optical film set, a light source module, and a frame. The light source module includes a light guide plate (LGP) and a light source adjacent to a side surface of the LGP. The optical film set is located between the display panel and the LGP. The frame disposed between the LGP and the optical film set extends to the LGP and covers a portion of the LGP. The frame has a first surface carrying the optical film set, a second surface facing to the light emitting surface, and a chamfered inclined surface. The chamfered inclined surface is within the active display area and connects the first and second surfaces. An extending distance of the first surface in the active display area is smaller than an extending distance of the second surface in the active display area.

Abstract: A universal dimming topology is provided for an electronic ballast having an inverter providing an output current across first and second output branches for driving a light source in accordance with a dimming control input signal. A filament voltage control block modulates first and second filament heating switches to provide filament heating voltage across first and second connection terminals associated with the output branches. During a preheat operating mode a control block disables the inverter and provides pulse width modulated control signals to the filament voltage control block to modulate the filament heating switches at a predetermined frequency. During a normal operating mode the control block enables the inverter and provides pulse width modulated control signals to the filament voltage control block to modulate the filament heating switches in accordance with a duty ratio based on a detected output current.

Abstract: An electronic ballast is provided with circuitry for detecting the removal of one or more lamp filaments across a range of dimming levels, and regulating an output stage including at least first and second pairs of lamp connection output terminals based on a filament connection status. A filament removal sensing circuit is coupled to the output terminal pairs and configured to generate an output voltage representative of a filament connection status with respect to the output terminal pairs. A microcontroller is coupled to receive the output voltage from the filament removal sensing circuit and programmed to determine a rate of change in the output voltage, compare the rate of change in the output voltage to a predetermined threshold value, and disable the output stage when the rate of change in the output voltage exceeds the predetermined threshold value.