Abstract: The copolymerization of ethylene with an optional comonomer is conducted in the presence of a catalyst having a specific aryloxy ether ligand structure. The process enables very high conversions of ethylene to polyethylene at very short residence times when conducted under conditions of pressures of at least 10.3 MPa and high ethylene feed concentrations of from 70 to 150 grams per liter. Using these polymerization conditions, the level of unsaturation may be controlled by the polymerization temperature: for example, a level of 0.09 vinyl groups per 1000 carbon atoms was observed at a polymerization temperature of 160° C. and a level of 0.22 vinyls per 1000 carbon atoms was observed at 220° C.

Abstract: The present disclosure provides a modified polyvinyl alcohol-based polymer, which comprises a modifying monomer unit represented by Formula wherein, X is a moiety comprising an alkenyl group, and the modified polyvinyl alcohol-based polymer has a saponification degree of 67 mol % to 78 mol % and a modification rate of 0.02 mol % to 1.5 mol %. The modified polyvinyl alcohol-based polymer is suitable to be used as a dispersant for suspension polymerization, to make the obtained polyvinyl chloride-based resin have reduced particle diameter and few coarse particles.

Abstract: The copolymerization of ethylene with an optional comonomer is conducted in the presence of a catalyst having a specific aryloxy ether ligand structure. The process enables very high conversions of ethylene to polyethylene at very short residence times when conducted under conditions of pressures of at least 10.3 MPa and high ethylene feed concentrations of from 70 to 150 grams per liter.

Abstract: Disclosed is a device for polishing an intraocular lens by using an electrorheological effect. The device comprises a supporting plate (14), an electric motor (16), a conductive slip ring (18), an outer sleeve (20), a tool shaft (22), a connecting flange (24), an annular electrode (26) and a tool needle (28). The electric motor (16), an outer ring of the conductive slip ring (18), and the outer sleeve (20) are all installed on the supporting plate (14). The electric motor (16) drives the tool shaft (22) to rotate by means of a transmission assembly. One end of the tool shaft (22) is closely fitted with an inner ring of the conductive slip ring (18), and the other end of the tool shaft extends into the outer sleeve (20). The connecting flange (24) is installed on the outer sleeve (20). The annular electrode (26) is connected to the connecting flange (24). One end of the tool needle (28) is connected to the tool shaft (22), and the other end of the tool needle extends out of the annular electrode (26).

Abstract: A surface acoustic wave device includes a piezoelectric substrate, a supportive layer, a cover layer and a pillar bump. The supportive layer is disposed on the piezoelectric substrate and around a transducer, the cover layer covers the supportive layer, and the pillar bump is located in a lower via hole of the supportive layer and an upper via hole of the cover layer. The upper via hole has a lateral opening located on a lateral surface of the cover layer, and the pillar bump in the cover layer protrudes from the lateral surface of the cover layer via the lateral opening.

Abstract: The present disclosure provides a semiconductor device structure with fine boron nitride spacer patterns and a method for forming the semiconductor device structure, which can prevent the collapse of the fine patterns. The semiconductor device structure includes a first target structure and a second target structure disposed over a semiconductor substrate. The semiconductor device structure also includes a first boron nitride spacer disposed over the first target structure, wherein a topmost point of the first boron nitride spacer is between a central line of the first target structure and a central line of the second target structure in a cross-sectional view.

Abstract: A head mounted display device, including a frame, a mask, at least one infrared (IR) transmitter, and at least one image capture device, is provided. The mask has a first light reflection layer on a first side. The IR transmitter is disposed in the frame and is used to emit an emitting light beam toward the first light reflection layer. The first light reflection layer reflects the emitting light beam to send a reflective light beam toward a target area. The image capture device is disposed in the frame and is used to capture a target area reflective image of the target area.

Abstract: The disclosure provides a handheld input device and an electronic system. The handheld input device includes a pen-shaped body, a flexible displacement sensor, and a processor. The flexible displacement sensor is disposed on the pen-shaped body, wherein the flexible displacement sensor deforms in response to a pressing force applied onto the flexible displacement sensor. The processor is coupled to the flexible pressure sensor and disposed in the pen-shaped body, wherein the processor is configured to perform: obtaining a specific displacement of the flexible displacement sensor; determining a stroke size of a representative object in a virtual environment based on the specific displacement of the flexible displacement sensor, wherein the representative object corresponds to the handheld device.

Abstract: A polymer film comprising polyvinyl acetal and a laminated glass manufactured using the same are provided. At least one surface of the polymer film has a void volume (Vv) value at a material ratio of 10% ranging from 3 ?m3/?m2 to 34.3 ?m3/?m2, wherein the void volume (Vv) and material ratio are defined in accordance with ISO 25178-2:2012.

Abstract: A head mounted display apparatus includes a display, a focus adjuster and a controller. The display generates a display image. The focus adjuster is disposed between a target zone and the display, and is configured to adjust a position of a focus plan of the display image according to a control signal. The controller generates the control signal according to vision depth information.

Abstract: The present disclosure provides a modified polyvinyl alcohol-based polymer, which comprises a modifying monomer unit represented by Formula wherein, X is a moiety comprising an alkenyl group, and the modified polyvinyl alcohol-based polymer has a saponification degree of 67 mol % to 78 mol % and a modification rate of 0.02 mol % to 1.5 mol %. The modified polyvinyl alcohol-based polymer is suitable to be used as a dispersant for suspension polymerization, to make the obtained polyvinyl chloride-based resin have reduced particle diameter and few coarse particles.

Abstract: A head mounted display apparatus includes a display, a focus adjuster and a controller. The display generates a display image. The focus adjuster is disposed between a target zone and the display, and is configured to adjust a position of a focus plan of the display image according to a control signal. The controller generates the control signal according to vision depth information.

Abstract: A head mounted display device includes a display, a light waveguide element, and a light shutter. The display periodically provides a display image. The light waveguide element receives the display image, generates a projection image according to the display image, projects the projection image from a second surface, and projects the projection image to a target zone from a first surface. The light shutter is adjacent to the second surface of the light waveguide element and is coupled to the light waveguide element. The light shutter is periodically disabled and enabled in an alternating manner.

Abstract: The present disclosure provides a method for preparing a semiconductor device structure with fine boron nitride spacer patterns. The method includes undercutting a photoresist pattern over a semiconductor substrate, and forming an inner spacer element over a sidewall surface of the photoresist pattern. The inner spacer element has a portion extending into a recess (i.e., the undercut region) of the photoresist pattern to form a footing, and a width of the portion of the inner spacer element increases continuously as the portion extends toward the semiconductor substrate. As a result, the inner spacer element may be prevented from collapsing after removal of the photoresist pattern.

Abstract: A head mounted display, including at least one display, an image capture device, a light beam generator, and an optical compensation element, is provided. The display has an open area and generates at least one image light beam. The image capture device is disposed by overlapping with the display corresponding to the open area. The image capture device is configured to capture a target area image through the open area. The light beam generator is configured to project at least one light beam to a target area. The target area reflects the light beam to generate at least one reflection light beam. The optical compensation element is configured to convert a transmission direction of the image light beam and enable the reflection light beam to be directly transmitted to the image capture device.

Abstract: A head mounted display device includes a display, a light waveguide element, and a light shutter. The display periodically provides a display image. The light waveguide element receives the display image, generates a projection image according to the display image, projects the projection image from a second surface, and projects the projection image to a target zone from a first surface. The light shutter is adjacent to the second surface of the light waveguide element and is coupled to the light waveguide element. The light shutter is periodically disabled and enabled in an alternating manner.

Abstract: A phosphinimide catalyst system comprises: i) a phosphinimide pre-polymerization catalyst having two phosphinimide ligands, at least one of which is substituted by a phosphinimide moiety; and ii) a catalyst activator. The catalyst system polymerizes ethylene with an alpha-olefin to give high molecular weight ethylene copolymer.

Abstract: A light-emitting display device includes at least a transparent substrate, a first patterned conductive layer and a second patterned conductive layer respectively disposed on top of the opposite first and second surfaces of the transparent substrate, and a plurality of inorganic electroluminescent objects disposed in form of an array on top of the first surface of the transparent substrate with the inorganic electroluminescent objects being spaced from one another in a distance of at least 2 mm. Each of the inorganic electroluminescent objects has one power pin and light signal pins for red light, green light, and blue light. The transparent substrate has a plurality of through holes between the first surface and the second surface. The first patterned conductive layer has a plurality of soldering pad regions respectively in connection with the power pin and the light signal pins.

Abstract: A light-emitting display device has a substrate, at least four electrically isolated soldering pad regions, and a plurality of light-emitting assemblies. The minimum distance between the light-emitting assemblies is at least 2 mm. The soldering pad regions are correspondingly in electrical connection with the input voltage pin, the data signal input or output pin, the clock signal input or output pin, and the ground pin of one of the light-emitting assemblies. The soldering pad region which is in electrical connection with the input voltage pin is electrically connected with a first grid wiring, the soldering pad region which is in electrical connection with the ground pin is electrically connected with a second grid wiring, and the soldering pad region which is in electrical connection with the data signal input pin, the data signal output pin, the clock signal input pin, or the clock signal output pin is electrically connected with a slender wire.

Abstract: Technologies relating to system and method of real-time video overlaying or superimposing display from multiple mutually synchronous cameras. are disclosed. An example method of real-time video overlaying includes the steps of: synchronizing frame rates of a depth data, a face meta data, and a video data of a first camera video output captured by a first camera; determining a first depth between a user face and the first camera; using a cutoff depth to determine a user body contour; generating a binary mask of the user body contour based on the first depth and the cutoff depth; smoothing an edge of the binary mask; merging the binary mask with the first camera video output and generating a merged first camera video output; and overlaying the merged first camera video output onto a second camera video output.