Abstract: An intelligent wireless doorbell alarm system driven and set by a wireless communication protocol includes at least one doorbell switch, plural lamps and an electronic device. The doorbell switch has a wireless signal module for generating a startup signal after the being triggered. The lamps are electrically coupled to one another. Each lamp has a wireless transmission module and a driving module and is electrically coupled to the doorbell switch for receiving the startup signal. The electronic device is electrically coupled to the lamps and has a setup module for setting the lamps.

Abstract: An LED driving circuit of a multi-stage switch bulb lamp includes a power modulation module having a first switch, a second switch, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a fourth resistor. The first and second switches are respectively and serially connected to the first and second transistors, the first transistor is electrically connected to the second resistor, the other end of the second resistor is serially connected to the third resistor to form a reference voltage node and has a reference voltage, the first and second transistors are electrically connected to the reference voltage node, the other end of the third resistor is serially connected to the fourth resistor, and the second transistor is electrically connected to the third resistor. The first and second switches may be turned on/off to adjust the reference voltage value and change the power.

Abstract: A self-excited TRIAC dimming circuit applied in a panel light includes a dimming module and at least one conversion module, and a power factor controller (PFC) is installed in the dimming module, and the conversion module is a self-excited electronic isolation transformer, and the TRIAC PFC is integrated with the circuit structure of a self-excited electronic transformer to improve the overall circuit stability, so that the panel light complies with a high safety standard to enhance product applicability and competitiveness.

Abstract: An LED driver circuit for supplying a TRIAC holding current by using a controllable current source has a single-stage power factor correction circuit architecture, and the circuit receives an input voltage received by a conversion module of the controllable current source to form an operating current for driving an LED light source to emit light and monitoring the change of the input voltage by a control chip, and adopts a switching method of a fixed cut-off time of a switch unit, so that the controllable current source outputs a constant operating current in a standard peak value to achieve the constant current status during the operation of the LED light source while assuring the operating current is always greater than a holding current required by the TRIAC element when the TRIAC element is conducted.

Abstract: Disclosed is a purely resistive dimming circuit for driving LEDs to emit light and support an LED dimming function. The LEDs are divided into a first string and a second string connected in series with each other. The purely resistive dimming circuit is respectively and electrically coupled to an anode terminal of the first string and an anode terminal of the second string by a driving resistor and a current limiting resistor which are connected in series with each other. The resistance of the driving resistor restricts the LEDs to emit light at different stages to enhance the working efficiency of circuits, while using the property of the current limiting resistor to limit the overvoltage current, so as to achieve a constant power operating effect.

Abstract: A touch type electrophoretic display apparatus, including: at least one photo-controlled voltage source, used for generating at least one reference voltage, wherein the level of the at least one reference voltage gets lower/higher as the intensity of environmental light increases/decreases; and a plurality of photo sensing circuits, each of which including: a photo transistor, generating a channel current according to an incident light; a light intensity storing capacitor, used for integrating the channel current to generate a photo sensing voltage; and an output switch, used for providing an output signal.

Abstract: A driver circuit adopting a primary side regulating architecture and an isolation transformer for improving LED flickers includes a transformer, a primary side regulating module, a feedback portion, a driving module and a dimming portion. The transformer includes an input coil, an auxiliary coil, a driving coil, and a dimming coil. The primary side regulating module is electrically coupled to the input coil; the feedback portion is electrically coupled to the auxiliary coil and the primary side regulating module; the driving module is electrically coupled to the driving coil; the dimming portion is electrically coupled to the dimming coil and the driving module. When a dimming signal inputted to the dimming portion has a voltage of 1V-10V, and the driver circuit is applied to a panel light, the LED flicker is improved effectively.

Abstract: A thin film transistor (TFT) substrate includes a substrate which is a flexible substrate, and a TFT structure disposed on the substrate and including a gate layer, a gate insulator layer, a first channel island and a second channel island. The gate layer is disposed on the substrate and including a first gate electrode and a second gate electrode electrically connected to each other. The first and second gate electrodes are parts of the same TFT structure. The gate insulator layer covers the first and second gate electrodes. The first and second channel islands are disposed on the gate insulator layer and respectively correspond to the first and second gate electrodes. The source and drain layer is disposed on the gate insulator layer and next to the first and second channel islands, wherein the source and drain layer partially covers top surfaces of the first and second channel islands.

Abstract: An LED driving device with open circuit protection and color temperature and brightness adjustment is applied in a lamp to drive LEDs which are divided into strings, and at least one string is formed by connecting blue light diodes in series, and the remaining strings are formed by connecting yellow light LEDs in series, and at least one of the yellow light strings is connected to the blue light string in parallel and then connected to the remaining strings in series to form a node. The LED driving device employs a switch to conduct the blue or yellow light string to change the color temperature of the emitted light of the lamp, and a power input pin of a control chip is electrically coupled to the node. If there is an open circuit caused by an abnormality of the LEDs, the operation will be stopped to provide protection.

Abstract: An LED driver circuit for supplying a TRIAC holding current by using a controllable current source has a single-stage power factor correction circuit architecture, and the circuit receives an input voltage received by a conversion module of the controllable current source to form an operating current for driving an LED light source to emit light and monitoring the change of the input voltage by a control chip, and adopts a switching method of a fixed cut-off time of a switch unit, so that the controllable current source outputs a constant operating current in a standard peak value to achieve the constant current status during the operation of the LED light source while assuring the operating current is always greater than a holding current required by the TRIAC element when the TRIAC element is conducted.

Abstract: An LED driving device with open circuit protection and color temperature and brightness adjustment is applied in a lamp to drive LEDs which are divided into strings, and at least one string is formed by connecting blue light diodes in series, and the remaining strings are formed by connecting yellow light LEDs in series, and at least one of the yellow light strings is connected to the blue light string in parallel and then connected to the remaining strings in series to form a node. The LED driving device employs a switch to conduct the blue or yellow light string to change the color temperature of the emitted light of the lamp, and a power input pin of a control chip is electrically coupled to the node. If there is an open circuit caused by an abnormality of the LEDs, the operation will be stopped to provide protection.

Abstract: The present invention provides a drive method for an electronic paper display. The method comprises to display a present image. Then, color data of pixels of the present image is gathered. The color data is compared to select one of a first color and a second color to be as a main color. Finally, a refresh image is displayed in the electronic paper display following the present image based on the main color.

Abstract: A ceiling lamp adopting a non-separating driver circuit includes a conversion module and a control module. The conversion module converts an input voltage into an operating voltage to drive the LEDs and forming a driving current, and the control module monitors the operating voltage and the driving current to adjust the operating cycle of the conversion module, change the output voltage value of the operating voltage, and linearly change the driving current at a constant current state. The conversion module just executes the power conversion for one time to provide the driving power of the LEDs instead of using the conventional driving method that executes a two-stage power conversion by a separating power converter and a negative booster of the conventional ceiling lamp. Therefore, the ceiling lamp adopting a non-separating driver circuit is capable of lowering the circuit cost and improving the operating efficiency.

Abstract: Disclosed is a variable power dimming control circuit for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs), and the circuit includes a dimming stabilization unit and a control unit. The control unit is provided for detecting an input current of a circuit, and the dimming stabilization unit is driven for outputting a holding current when the input power is smaller than a standard, and stopping the output the holding current when the input power is greater than the standard. When the LEDs are dimmed to low luminance, a chip controls the operation of the dimming stabilization unit to assure the stability of the dimming operation of a TRIAC. When the LEDs are adjusted to high or full brightness, the chip stops the output of the holding current to reduce unnecessary power consumption and enhance the overall circuit performance effectively.

Abstract: A ceiling lamp adopting a non-separating driver circuit includes a conversion module and a control module. The conversion module converts an input voltage into an operating voltage to drive the LEDs and forming a driving current, and the control module monitors the operating voltage and the driving current to adjust the operating cycle of the conversion module, change the output voltage value of the operating voltage, and linearly change the driving current at a constant current state. The conversion module just executes the power conversion for one time to provide the driving power of the LEDs instead of using the conventional driving method that executes a two-stage power conversion by a separating power converter and a negative booster of the conventional ceiling lamp. Therefore, the ceiling lamp adopting a non-separating driver circuit is capable of lowering the circuit cost and improving the operating efficiency.

Abstract: The present invention discloses a method for manufacturing home and personal care product and a method for manufacturing degreased coffee particles thereof. The home and personal care product comprises coffee particles with different sizes, in which the coffee particles are degreased by physical and chemical methods and then grinded to different sizes to meet the requirements of different products. Natural compositions from original coffee can be further added for enhancing the clean and care effects of the product.

Abstract: A manufacturing method of a display panel including following steps is provided. An active device substrate including a first plate, active devices disposed on the first plate and pixel electrodes electrically connected to the active devices is provided. A display medium substrate including a second plate and a display medium disposed on the second plate is provided. The pixel electrodes are electrically connected to the display medium by a conductor. Moreover, a display panel manufactured by the manufacturing method is also provided.

Abstract: A LED driving device comprises a rectification circuit, a holding current circuit and a driving circuit to drive and linearly regulates an illumination brightness of at least one LED by utilizing level variation of current magnitude. The rectification circuit rectifies and outputs a rectified voltage to the holding current circuit and the driving circuit by filtering impulses via a filter after receiving an alternating current voltage. The driving circuit outputs a driving current filtered by a filter capacitor to the LED, and the driving current is sensed by a sensing resistor to allow the holding current circuit outputting a holding current to the rectification circuit such that the whole circuit power can be improved to reduce problems of noise interference and twinkling.

Abstract: Disclosed is a variable power dimming control circuit for driving and linearly adjusting the illumination brightness of a plurality of light emitting diodes (LEDs), and the circuit includes a dimming stabilization unit and a control unit. The control unit is provided for detecting an input current of a circuit, and the dimming stabilization unit is driven for outputting a holding current when the input power is smaller than a standard, and stopping the output the holding current when the input power is greater than the standard. When the LEDs are dimmed to low luminance, a chip controls the operation of the dimming stabilization unit to assure the stability of the dimming operation of a TRIAC. When the LEDs are adjusted to high or full brightness, the chip stops the output of the holding current to reduce unnecessary power consumption and enhance the overall circuit performance effectively.

Abstract: A touch-control structure for a flexible display device is provided. The touch-control structure comprises a flexible display panel, at least one menu display area, a touch film and at least one sensing element. The flexible display panel comprises a visible surface. The menu display area is located on at least one side of the visible surface. The touch film comprises a first flexible substrate and an operating contact surface. The visible surface and the operating contact surface are disposed on the two opposite ends of the touch structure respectively. The sensing element is disposed on at least one side of the first flexible substrate corresponding to the menu display area.