Abstract:
Photosensing transistors, display panels employing a photosensing transistor, and methods of manufacturing the same, include a gate layer, a gate insulation layer on the gate layer, a channel layer on the gate insulation layer, an etch stop layer on a partial area of the channel layer, a source and a drain on the channel layer and separated from each other with the etch stop layer being interposed between the source and the drain, and a passivation layer covering the source, the drain, and the etch stop layer, wherein the source is separated from the etch stop layer.
Abstract:
A photoelectric apparatus has a phototransistor which receives a light signal and in which a collector current thereof varies according to intensity of the received light signal, and a transistor in which a collector current thereof varies according to a base voltage thereof. The phototransistor and the transistor constitute a differential amplification circuit. At least one of the phototransistor and the transistor outputs an electric signal.
Abstract:
Provided are a display panel and a display apparatus; the display panel comprises at least one sensing module (100) arranged in a peripheral area (B), the sensing module (100) comprises at least one sensing unit, the sensing unit (101, 102, 103) comprises a sensing transistor, a first end of the sensing transistor receives an electrical signal, a gate of the sensing transistor receives a first control signal, and a second end of the sensing transistor outputs a photosensitive signal. When the sensing transistor receives the first control signal, a gate of the sensing transistor is set to be in a closed state; when the sensing transistor is illuminated, the voltage outputted by a drain electrode of the sensing transistor increases, the voltage change amount is read as the photosensitive signal, and ambient light is identified according to the spectral features of common ambient light in combination with the response results of different wavelengths. On the basis of that functionality, the display color temperature can be optimized and display performance is improved.
Abstract:
Electro-optical conversion of an input analog signal and optical modulation of the optical signal to provide light of different intensity levels to 2n photodetection sites whose outputs can be encoded as an n-bit digital output value. The sample rate can exceed 10 GHz (rates above 100 GHz are possible) with much greater simplicity of electronic circuitry.
Abstract:
A dual color temperature vehicle lamp able to judge a driving environment based on invisible light includes a vehicle lamp body in the form of an LED. The vehicle lamp body includes a light emitting unit capable of performing a conversion of at least two kinds of color temperature light. A front end face of the vehicle lamp body is provided with at least one invisible light emitting source, at least one reflected light receiver, and a partition plate between the invisible light emitting source and the reflected light receiver. The invisible light emitting source is embedded in a recess at a front end of the vehicle lamp body. The vehicle lamp body includes a preamplifier circuit connected with the reflected light receiver, an MCU connected with the preamplifier circuit, and a wireless transceiver module connected with the MCU therein.
Abstract:
A multifunctional infrared (IR) module is configured for multiple IR applications without an additional microcontroller to be integrated into a computing device and is able to utilize voltage control instead of current control. The multifunctional IR module includes an IR light emitting diode (LED), and an IR receiver (e.g., photodiode or phototransistor). In one embodiment, the multifunctional IR module includes a resistor that is connected to the cathode of the IR LED and the drain of a transistor, with the source of the transistor grounded. In some embodiments, the multifunctional IR module additionally includes a red LED. Various configurations of the multifunctional IR module are able to perform one or more of the following functions: IR in (receiving IR signals), IR out (generating IR signals), heart rate sensing, SpO2 (oxygen saturation) sensing, distance/proximity detection, gesture detection, LED control, and ambient light detection.
Abstract:
An optical sensing circuit has a plurality of optical sensing units arranged so that the optical sensing circuit is ambient light insensitive or sensitive to light within certain spectrum. The sensitive spectra corresponding to the plurality of optical sensing units are different from one another.
Abstract:
A stroboscope with an integral optical reflective sensor, which can be removable or fixed, contains a light emitting source, a light sensitive receiver, a pulse conditioning circuit, a stroboscope circuit, a blanking circuit, and a stroboscope light source. The light emitting source projects a light beam to a reflective target. The reflected light beam from the reflective target is detected by the light sensitive receiver. The pulse conditioning circuit generates a set of electrical pulses coincident with the reflected light beam which are sent to the stroboscope circuit. Depending on the signal received by the stroboscope circuit, the stroboscope light source is triggered. The blanking circuit prevents false triggering of the stroboscope light source by introducing a time delay. The time delay is applied when the stroboscope light source is switched on and for a finite time after the stroboscope light source is switch off.
Abstract:
An infra-red assembly for a television, that has a plurality of layers operating for creating an image from pixels formed of illuminated color filters. The plurality of layers including a backlight, a polarization layer adjacent the backlight, a TFT layer over the polarization layer, an LCD layer overlying the TFT layer, and a color filter layer overlying the LCD layer. Wherein at least one of the layers includes an opening, and another of said layers includes an infrared filter that passes infrared and blocks light that is not infra red, and where another of said layers underlying said infrared layer includes an infrared receiver that receives the infrared through said opening and said infrared filter, and where said opening and said filter and said receiver are located in registration with one another, such that infrared passes through the opening and passes through the filter and passes to the receiver.
Abstract:
A method for transmitting a signal using an optical coupling device includes converting a first electric signal into an optical signal, converting the optical signal into a first current, and outputting a second current that corresponds to the first current as a second electric signal. The second current may be larger than the first current.