摘要:
A two-stage torsion pivot hinge including an axle connected with a base and having a shaft mounted thereon with a bush for a spring tube. The bush forms a first and a second protrusion element respectively extending out of its two ends. The spring tube is fixedly connected with a supporting member and is provided with two torsion sleeves respectively on the two ends of the bush. Each torsion sleeve has an axial cut and has two contact elements extending respectively toward the two ends of the bush. The contact elements respectively interfere with the first and the second protrusion elements. By the function between the torsion sleeve and the bush, the pivot hinge can provide different torsion forces for the stroke of rotating the screen from its closed position to a vertical angular position and for the stroke from the vertical position to its maximum opening angular position.
摘要:
A hinge for a notebook computer is composed of an upper seat, a lower seat, and two arms. The upper seat is rotatably mounted in the lower seat, and the arms are mounted on the upper seat. A monitor of the computer is installed on the arms, and the lower seat is secured on a body of the computer. Therefore, the monitor can be turned about the arms to raise from the body, and turned along with the upper seat about a vertical axis of the lower seat to adjust a visible scope.
摘要:
A hinge for a notebook includes an L-shaped seat with a barrel. A pintle has a shaft extending in the barrel of the seat. A first tube, a sleeve and a second tube are in turn mounted on the shaft. The first tube and second tube are securely received in the barrel and each has a stop formed at a respective end facing the sleeve. The sleeve has two arcuate segments respectively formed at two ends and corresponding to the stops of the tubes. Thus, the sleeve can be rotated along with the shaft about the first and second tubes until one arcuate segment of the sleeve abuts the corresponding stop. Whereby, a user can raise the display with a small force to separate the display from the body and a large force to completely raise and position the display.
摘要:
A hinge for a notebook includes an L-shaped seat with a barrel. A pintle has a shaft extending in the barrel of the seat. A first tube, a sleeve and a second tube are in turn mounted on the shaft. The first tube and second tube are securely received in the barrel and each has a stop formed at a respective end facing the sleeve. The sleeve has two arcuate segments respectively formed at two ends and corresponding to the stops of the tubes. Thus, the sleeve can be rotated along with the shaft about the first and second tubes until one arcuate segment of the sleeve abuts the corresponding stop. Whereby, a user can raise the display with a small force to separate the display from the body and a large force to completely raise and position the display.
摘要:
A dual-frequency bistable liquid crystal display and the liquid crystal mixture thereof includes liquid crystal cell filled with a liquid crystal mixture which contains dual-frequency liquid crystal, chiral compound, and nematic liquid crystal mixture. The liquid crystal mixture has the characteristics of both the dual-frequency liquid crystal and cholesteric liquid crystal. The dual-frequency bistable liquid crystal display is driven in a frequency modulation mode and can be switched between two optical states by taking advantage of the dielectric anisotropy of the liquid crystal, which results in a short switching time and sharp contrast between two optical states. Furthermore, the maintaining of the two optical states requires no voltage, which does not require the use of a high voltage to destabilize the helical structure of the cholesteric liquid crystal, and does not have to go through a metastable stage. Hence, power consumption and switching time are reduced.
摘要:
A method of forming a contact opening in a semiconductor substrate is presented. A plurality of trench gates each having a projecting portion are formed in a semiconductor substrate, and a stop layer is deposited over the semiconductor substrate extending over the projecting portions, wherein each portion of the stop layer along each of the sidewalls of the projecting portions is covered by a spacer. By removing the portions of the stop layer not covered by the spacers by utilizing a relatively higher etching selectivity of the stop layer to the spacers, the openings between adjacent projecting portions with an L-type shape on each sidewall can be formed, and a lithography process can be performed to form self-aligned contact openings thereafter.
摘要:
An aiming method and a device for an extraoral radiographic technique using a pair of length-adjustable indicator rods. Install a circular locator on each to the indicator rod. While keeping at an appropriate angle, hold the two locators closely beside the cheeks of the patient, and then along the hypothetical axis, secure a radioactive-rays emission head onto one of the circular locator. Following this hypothetical axis to the other locator, and secure a film or a sensor. Aim the radioactive-rays emission head along the hypothetical axis while taking the radiographic shots.
摘要:
An input buffer protection circuit is disclosed which comprises a NMOS transistor with a source, drain and gate coupled to an input terminal of the input buffer, a pad and a chip peripheral positive power supply voltage (VDDP), respectively, and a PMOS transistor with a source, drain and gate coupled to the pad, the input terminal of the input buffer and a first terminal of a biasing circuit, respectively, wherein the biasing circuit has a second terminal coupled to the pad and generates at the first terminal a voltage lower than the pad's input signal voltage (VPAD) to turn on the PMOS transistor when the VPAD is lower than or equal to the VDDP, or a voltage substantial equals to the VPAD to turn off the PMOS transistor when the VPAD is higher than the VDDP.
摘要:
A hinge rotative on two mutual orthogonal axes, it is used in electronic equipment having a screen and a main body; the hinge has a fixing plate having thereon a rotation seat rotative on a vertical axis relatively to the fixing plate and has two connecting legs rotative on a horizontal axis. A nut above the rotation seat is used to screw lock to a rotation shaft, thereby twisting force on the rotation seat can be adjusted; and the connecting legs each has a resilient sleeve forming thereon a plane or forming on its lateral side a strip protruding inwards, by cooperation of the planes/strips with surfaces/recesses on shafts of the connecting legs extending into the resilient sleeves, better positioning effects are obtained; and a connecting area between the rotation shaft and the fixing plate is given with four protrusions, hence the hinge gets a stable structure.
摘要:
The present invention provides a trench type power transistor device including a semiconductor substrate, at least one transistor cell, a gate metal layer, a source metal layer, and a second gate conductive layer. The semiconductor substrate has at least one trench. The transistor cell includes a first gate conductive layer disposed in the trench. The gate metal layer and the source metal layer are disposed on the semiconductor substrate. The second gate conductive layer is disposed between the first gate conductive layer and the source metal layer. The second gate conductive layer electrically connects the first gate conductive layer to the gate metal layer, and the second gate conductive layer is electrically insulated from the source metal layer and the semiconductor substrate.