Abstract: Systems are generally described that include a curved light guide for thin structure illumination. An example system includes a light sub-assembly comprising a curved light sub-assembly backing ring and a plurality of light-emitting diodes (LEDs), each LED of the plurality of LEDs being coupled to the curved light sub-assembly backing ring. The example system also includes a curved light guide having an edge coupled to the light sub-assembly, the curved light guide including a pattern of optical extraction features that distribute light and are positioned on the exterior surface of the curved light guide for uniformly distributing light from the plurality of LEDs. The example system also includes a curved reflector including an exterior surface coupled to an interior surface of the curved light guide, wherein the exterior surface is reflective, and a volumetric diffuser coupled to the exterior surface of the curved light guide.

Abstract: An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

Abstract: A quasi-vertical JBS diode and a monolithic integrated three-phase DRU are provided. The quasi-vertical JBS diode includes a Si substrate, a N+ GaN conductive layer and an N-type GaN drift layer sequentially disposed from bottom to top. A top region of the N-type GaN drift layer defines groove structures distributed concentrically and annularly, and a Mg-doped P-type BN material is disposed on an inside of each of the groove structures and a side of the N-type GaN drift layer. An anode is disposed on a surface of the N-type GaN drift layer defining the groove structures. A cathode is disposed on a surface of the N+ GaN conductive layer at intervals around the N-type GaN drift layer. The monolithic integrated three-phase DRU includes three AC input terminals, two rectified DC output terminals and diode groups corresponding to six rectifier bridge arms. The diodes each are the quasi-vertical JBS diode.

Abstract: A MOSFET device based on nickel oxide (NiO) gate modulation and its preparation method are provided. The MOSFET device includes a substrate layer, a first N-type gallium nitride (GaN) layer, a second N-type GaN layer, a P-type GaN layer, and a third N-type GaN layer disposed sequentially from bottom to top; gate stepped parts extending from both ends of an upper surface of the third N-type GaN layer to an interior of the second N-type GaN layer; gate structures extending from the upper surface of the third N-type GaN layer to bottoms of the gate stepped parts; a source recess, a source electrode, drain electrodes and NiO modulation layers extending from the bottoms of the gate stepped parts to an upper surface of the first N-type GaN layer. By setting the NiO modulation layers, a voltage withstand level of the MOSFET device is improved.

Abstract: Devices, systems, and methods are provided for a front light for use with reflective displays. A display device (such as an e-reader, for example) may include a light source and a light guide able to receive first light from the light source. The light guide includes a plurality of extraction features that control optimal movement of light emitted by the light source through a display stack of the display device. The extraction feature is provided in a wedge shape at an angle such that when light refracts from the extraction feature, it is directed towards the reflective LCD display at an incidence angle close to the display normal for the reflected light to exhibit similar properties as the reflected light from the EPD panel.

Abstract: A radio frequency (RF) amplifier has a first transistor with a first gate coupled to a first input, and a first series-connected capacitor-resistor combination coupled between the first gate and a first source. A first shunt switch is in parallel with the first resistor and controlled by a first signal. A grounding switch is between the first gate and ground, controlled by a second signal. A controller commands the switches to select an on-state for amplification at the first input or off-state to prevent RF signal amplification. A second transistor with a second gate is coupled to a second input, and a second series-connected capacitor-resistor combination is coupled between the second gate and a second source. A second shunt switch is in parallel with the second resistor and controlled by a third signal. A grounding switch is between the first gate and ground and is controlled by a fourth signal.

Abstract: Devices, systems, and methods are provided for a front light for use with reflective displays. A display device (such as an e-reader, for example) may include a light source and a light guide able to receive first light from the light source. The light guide includes a plurality of extraction features that control optimal movement of light emitted by the light source through a display stack of the display device. The extraction feature is provided in a wedge shape at an angle such that when light refracts from the extraction feature, it is directed towards the reflective LCD display at an incidence angle close to the display normal for the reflected light to exhibit similar properties as the reflected light from the EPD panel.

Abstract: The present disclosure discloses a data storing method, an apparatus, an electronic device and a readable storage medium, wherein the method includes: constructing a data region and an external source-tracing region in a magnetic disk of a distributed storage system in advance, wherein the data region and the external source-tracing region have a corresponding relation, and in an internal memory, simultaneously constructing an internal source-tracing region that corresponds to the external source-tracing region; when it is detected that the data region is written with a target datum, writing source-tracing information corresponding to the target datum into the internal source-tracing region; and downwardly swiping the data of the internal source-tracing region to the external source-tracing region, to store the source-tracing information of the data region by the external source-tracing region. Therefore, the data may be accurately and efficiently recovered, and the reason for data loss is timely determined.

Abstract: An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

Abstract: The utility model relates to the field of electric heating and heat conduction technology, specifically to a heating structure and the heating device applying it. The heating structure comprises surface layer sequentially stacked and connected, heat-conducting insulating layer, heating film and thermal insulation layer. The heat generating film comprises an electrically conductive layer, and electrically conductive members provided at two end portions of an upper surface of the electrically conductive layer. The heating structure has a high heating temperature, desirable heating uniformity, which can be connected to broad range of voltages. They can be used to adjust heating temperature, and the heating temperature can reach a maximum of 350° C. In addition, the heating structure has the advantages of thin thickness and small volume. The heating device can be used as grill pan, electric hot pot, iron, electric heater, industrial oven or tunnel oven.

Abstract: The utility model relates to the electric heating, specifically to a flexible heating film and a vegetable warming plate. The flexible heating film heats up the flexible heating body after being energized through a conductive member, the first and the second electrode. The heating film is very flexible that are convenient to be rolled up or stored. The flexible insulator is heat-pressed and wrapped in the flexible heat-generating body, the first electrode and second electrode in membrane form, so that the flexible heat-generating film is waterproofing, insulating, and heat-generating. The warming plate is mainly composed of flexible heating film, so that it is flexible, easy to be stored or to rolled up, with small size, light weight and low production costs, high heating efficiency, excellent stability and heating uniformity, and being waterproof. It is excellent in insulation, being able to be connected to a wide range of adaptable voltage.

Abstract: An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.

Abstract: A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.

Abstract: A non-volatile three-dimensional memory cell, a storage method, and a chip assembly are provided. The non-volatile three-dimensional memory cell includes: a volatile memory chip; an interface chip, connected to the volatile memory chip in a three-dimensional stacked manner through a three-dimensional heterogeneous integrated structure; a non-volatile memory chip, connected to at least one of the volatile memory chip and the interface chip in a three-dimensional stacked manner through the three-dimensional heterogeneous integrated structure, and the non-volatile three-dimensional memory cell is formed. The interface chip includes a communication protocol circuit, the data is programed in at least one of the volatile memory chip and the non-volatile memory chip in a cache coherence manner through the communication protocol circuit. The data is read from at least one of the volatile memory chip and the non-volatile memory chip in a cache coherence manner through the communication protocol circuit.

Abstract: The present disclosure discloses a data storing method, an apparatus, an electronic device and a readable storage medium, wherein the method includes: constructing a data region and an external source-tracing region in a magnetic disk of a distributed storage system in advance, wherein the data region and the external source-tracing region have a corresponding relation, and in an internal memory, simultaneously constructing an internal source-tracing region that corresponds to the external source-tracing region; when it is detected that the data region is written with a target datum, writing source-tracing information corresponding to the target datum into the internal source-tracing region; and downwardly swiping the data of the internal source-tracing region to the external source-tracing region, to store the source-tracing information of the data region by the external source-tracing region. Therefore, the data may be accurately and efficiently recovered, and the reason for data loss is timely determined.

Abstract: The disclosure belongs to the technical field of liquid crystal materials, and specifically relates to a polymerizable compound, a preparation method therefor, and the use thereof. The polymerizable compound has a structure as shown in general formula I. Compared with the existing polymerizable RM, the polymerizable compound has the advantages of a good solubility, a faster polymerization rate, a more complete extent of polymerization, and less residues, thereby improving the problem of poor display to a great extent.

Abstract: An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

Abstract: The present disclosure relates to a data snapshot method and apparatus, a computer device and a storage medium. The method includes: acquiring the capacity of to-be-written data after snapshot, and comparing the capacity of the to-be-written data with a preset capacity; when the capacity of the to-be-written data is greater than or equal to the preset capacity, writing the to-be-written data into a snapshot volume in a Redirect On Write manner; when the capacity of the to-be-written data is less than the preset capacity, writing the to-be-written data into a solid state drive in a Redirect On Write manner; and when a background write-back thread detects that there is data writing into the solid state drive, writing corresponding data in a source volume into the snapshot volume in a Copy On Write manner, and writing the to-be-written data in the solid state drive into the source volume.

Abstract: The present disclosure relates to a data snapshot method and apparatus, a computer device and a storage medium. The method includes: acquiring the capacity of to-be-written data after snapshot, and comparing the capacity of the to-be-written data with a preset capacity; when the capacity of the to-be-written data is greater than or equal to the preset capacity, writing the to-be-written data into a snapshot volume in a Redirect On Write manner; when the capacity of the to-be-written data is less than the preset capacity, writing the to-be-written data into a solid state drive in a Redirect On Write manner; and when a background write-back thread detects that there is data writing into the solid state drive, writing corresponding data in a source volume into the snapshot volume in a Copy On Write manner, and writing the to-be-written data in the solid state drive into the source volume.