Po-Chuan Chen
Po-Chuan Chen, Shulin City TW
Patent application number | Description | Published |
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20080239635 | Notebook computer hinge - A notebook computer hinge has a screen tab, a main tab, a pintle for connecting the screen tab with the main tab pivotally. A support tab has a hole for the pintle. A longitudinal hole is defined through the support tab and is engaged with a connecting piece on the screen tab. A first stop is C-shaped is formed on the pintle between the support tab and the main tab and has a gap. The support tab has a second stop formed on the support tab and engaged with the gap. Thus the screen is limited to pivot in a specific angular extent. | 10-02-2008 |
20090089977 | Angle-limiting hinge - An angle-limiting hinge has a stationary leaf, a pivoting leaf, a pintle and a limiting element. The pintle is mounted statically in the stationary leaf and rotatably in the pivoting leaf, thereby allowing the leaves to rotate relative to each other and the pintle has a limit. The limit is C-shaped, formed diametrically around the pintle and comprises two ends being positive stops. The limiting element is mounted around the pintle and is secured to the pivoting leaf and has a limiting block mounted securely in the limiting element using riveting. The limiting block is disposed between the positive stops of the limit to limit relative rotational angles of the leaves. Accordingly, The angle-limiting hinge fastens and facilitates fabrication and is capable of limiting the rotational angle of the leaves. | 04-09-2009 |
20090144933 | Variable friction hinge - A variable friction hinge is mounted between a cover and a base of an electronic device and has a pintle, a stationary leaf and a washer assembly. The pintle is connected to the cover. The stationary leaf is connected to the base and has an activating panel with an activating edge. The washer assembly has a movable washer, an abrasion washer and a biasing member. The movable washer selectively abuts the activating edge of the activating panel and has an elongated hole slidably mounted securely around the pintle. The movable and the abrasion washers have teeth corresponding to and selectively engaging each other, causing less friction when engaged and more friction when disengaged. When rotated the movable washer selectively disengages the teeth causing the hinge to have greater friction when being rotated one way than the other. | 06-11-2009 |
20090282649 | Hinge - A hinge has a pintle, a stationary leaf, a first limiting washer, a first positioning washer and a second positioning washer. The stationary leaf is mounted rotatably around the pintle. The first limiting washer is mounted securely on the pintle adjacent to the stationary leaf and has a limit. The first positioning washer is mounted around the pintle, is connected securely to the stationary leaf and has a protrusion and a detent. The protrusion corresponds to and selectively abuts the limit of the first limiting washer. The second positioning washer is mounted securely on the pintle and has a detent being selectively attached to the detent of the first positioning washer. The rotating angle of the pintle relative to the stationary leaf is limited by the limit of the first limiting washer abutting the protrusion of the first positioning washer. | 11-19-2009 |
20090307873 | Hinge assembly with an oil-retaining collar - A hinge assembly with an oil-retaining collar has a barrel, a pintle assembly mounted in the barrel and an oil-retaining collar mounted around the barrel and is filled with lubricant to allow the pintle assembly to rotate smoothly. The oil-retaining collar prevents the lubricant from flowing out of the barrel and prevents a plastic housing of an electronic device from being corroded and electronics from malfunctioning. | 12-17-2009 |
Po-Chuan Chen, Hsinchu TW
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20080309559 | BROADBAND INVERTED-F ANTENNA - An antenna body of a broadband inverted-F antenna is printed on a circuit board, wherein an interval is maintained between the antenna body and a grounding plane disposed at a position proximate to an edge of the circuit board. The antenna body is divided into a first, a second and a third portions. An end of the first portion is extended towards the grounding plane to form the short circuit line, and another end of the first portion is extended towards the grounding plane to form the feed line. A first end of the second portion is connected to another end of the first portion, a second end of the second portion is connected to an end of the third portion, and the first portion has a wire width smaller than the third portion, so that no metal is existing between the second and third portions and the grounding plane. | 12-18-2008 |
20090115667 | Wireless electronic product with step-shaped wideband antenna - This invention is a wireless electronic product including a printed circuit board and a signal line installed at an end of the printed circuit board, wherein a wideband antenna is installed on the printed circuit board and has a shape extending from an another end of the printed circuit board towards the central position of the printed circuit board to form a symmetrical step-shaped antenna, and a microstrip feedline is extended from an end of the wideband antenna away from the another end of the printed circuit board and coupled with the signal line, such that the current produced by microstrip feedline due to an electro-inductive effect can flow along a step-shaped path on both sides of the wideband antenna, and the current can be distributed uniformly on the wideband antenna to effectively reduce the electro-inductive effect of the microstrip feedline. | 05-07-2009 |
Po-Chuan Chen, Kaohsiung TW
Patent application number | Description | Published |
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20120120333 | LIQUID CRYSTAL LENS, CONTROLLING METHOD THEREOF AND 3D DISPLAY USING THE SAME - The present disclosure provides a liquid crystal lens, a controlling method thereof and a 3-Dimensional (3D) display using the same. The liquid crystal lens includes a pair of electrode structures which are arranged apart from each other; and a liquid crystal layer which is arranged between the pair of electrode structures and includes a plurality of liquid crystal molecules aligned in an initial aligning direction in which the liquid crystal layer has a non-lens effect. The pair of electrode structures are arranged to generate a first electric field which is used to change aligning directions of the liquid crystal molecules to make the liquid crystal layer have a lens effect. The pair of electrode structures are further arranged to generate a second electric field which is used to make the liquid crystal molecules revert to the initial aligning direction. | 05-17-2012 |
20120162194 | STEREO DISPLAY APPARATUS AND LENS ARRAY THEREOF - An exemplary stereo display apparatus includes a pixel array and a lens array. The pixel array includes a plurality of pixel units arrayed in parallel rows and parallel columns. The lens array covers the pixel array, and includes a plurality of lenticular lens units arrayed in said rows and columns. The lenticular lens units are parallel to each other, and the adjacent lenticular lens units arrayed in columns have a stagger arrangement along a first direction along which the pixel units are arrayed in rows, thereby the adjacent lenticular lens units arrayed in columns are arranged in terraced steps. | 06-28-2012 |
Po-Chuan Chen US
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20120153407 | LIGHT-ASSISTED BIOCHEMICAL SENSOR - A light-assisted biochemical sensor based on a light addressable potentiometric sensor is disclosed. The light-assisted biochemical sensor comprises a semiconductor substrate and a sensing layer, which are used to detect the specific ion concentration or the biological substance concentration of a detected solution. Lighting elements fabricated directly on the back surface of the semiconductor substrate directly illuminate the light to the semiconductor substrate, so as to enhance the photoconduction property of the semiconductor substrate. And then, the hysteresis and the sensing sensitivity of the light-assisted biochemical sensor are respectively reduced and improved. In addition, due to its characteristics of integration, the light-assisted biochemical sensor not only reduces the fabrication cost but also has portable properties and real-time detectable properties. As a result, its detection range and the application range are wider. | 06-21-2012 |
Po-Chuan Chen, New Taipei City TW
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20130043929 | POWER SUPPLY DEVICES AND CONTROL METHOD THEREOF - A power supply device is provided. The power supply device provides a maintenance voltage at an output terminal to a system chip of a system and includes a first battery, a capacitor, a charging circuit, and a monitoring circuit. The first battery provides a battery voltage. The capacitor stores a capacitor voltage. The charging circuit is coupled to the capacitor. The monitoring circuit detects whether the battery voltage is less than a first threshold and whether the capacitor voltage is larger than a second threshold and generates a control signal according to the determination result. When the monitoring circuit detects that the battery voltage is less than the first threshold and the capacitor power supply device voltage is not larger than the second threshold, the monitoring circuit asserts the control signal to control the charging circuit to charge the capacitor. | 02-21-2013 |
20140139165 | FAN CONTROL SYSTEM, COMPUTER SYSTEM, AND FAN CONTROLLING METHOD THEREOF - A fan control system, a computer system, and a fan controlling method thereof are disclosed. The fan control system is used in the computer system for controlling a fan device. The fan controlling method includes the following steps: obtaining a temperature value of the computer system; determining whether the temperature value of the computer system is larger than or equal to a predetermined temperature value; if yes, controlling a rotation speed of the fan device according to the temperature value; if no, further obtaining a current value via a heat generating electronic component of the computer system; determining whether the current value of the computer system is larger than or equal to a predetermined current value; and if yes, changing the rotation speed of the fan device according to a variation of the current value. | 05-22-2014 |
Po-Chuan Chen, Kaohsiung City TW
Patent application number | Description | Published |
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20140002759 | LIQUID CRYSTAL LENS, CONTROLLING METHOD THEREOF AND 3D DISPLAY USING THE SAME | 01-02-2014 |