Keung
Au Sze Keung, Chai Wan HK
Patent application number | Description | Published |
---|---|---|
20140254853 | Music listening and playing apparatus - A headset apparatus is provided, the apparatus comprises: a headband; at least two connectors, each of the connectors has at least two arms, a first arm being shorter than a second arm; and at least two speakers, each speaker comprising an audio output element on a first side, each of the audio output elements of each of the speakers face one another during a first music listening mode, and each of the audio output elements of the speakers are designed to be rotated away from one another during a second music playing mode, the rotation causing the change in modes. | 09-11-2014 |
Chan Wai Keung, To Kwa Wan HK
Patent application number | Description | Published |
---|---|---|
20110108047 | FINGER POSITIONING DEVICE FOR A PRINTER - A finger positioning device for a printer is provided, having a frame, a finger support supported by the frame, the finger support having a loading position and a printing position; and a release latch adjacent the finger support, wherein the finger support is biased to the printing position and the release latch is configured to releasably retain the finger support in the loading position. The finger positioning device may further be configured such that the release latch is triggered to release the finger support from the loading position to the printing position by the distal end of a finger fully introduced onto the finger support. | 05-12-2011 |
Chi Wing Keung, Hong Kong CN
Patent application number | Description | Published |
---|---|---|
20110309378 | METHOD FOR MANUFACTURING A MONOLITHIC LED MICRO-DISPLAY ON AN ACTIVE MATRIX PANEL USING FLIP-CHIP TECHNOLOGY AND DISPLAY APPARATUS HAVING THE MONOLITHIC LED MICRO-DISPLAY - A high-resolution, Active Matrix (AM) programmed monolithic Light Emitting Diode (LED) micro-array is fabricated using flip-chip technology. The fabrication process includes fabrications of an LED micro-array and an AM panel, and combining the resulting LED micro-array and AM panel using the flip-chip technology. The LED micro-array is grown and fabricated on a sapphire substrate and the AM panel can be fabricated using CMOS process. LED pixels in a same row share a common N-bus line that is connected to the ground of AM panel while p-electrodes of the LED pixels are electrically separated such that each p-electrode is independently connected to an output of drive circuits mounted on the AM panel. The LED micro-array is flip-chip bonded to the AM panel so that the AM panel controls the LED pixels individually and the LED pixels exhibit excellent emission uniformity. According to this constitution, incompatibility between the LED process and the CMOS process can be eliminated. | 12-22-2011 |
20140008667 | METHOD FOR MANUFACTURING A MONOLITHIC LED MICRO-DISPLAY ON AN ACTIVE MATRIX PANEL USING FLIP-CHIP TECHNOLOGY AND DISPLAY APPARATUS HAVING THE MONOLITHIC LED MICRO-DISPLAY - A high-resolution, Active Matrix (AM) programmed monolithic Light Emitting Diode (LED) micro-array is fabricated using flip-chip technology. The fabrication process includes fabrications of an LED micro-array and an AM panel, and combining the resulting LED micro-array and AM panel using the flip-chip technology. The LED micro-array is grown and fabricated on a sapphire substrate and the AM panel can be fabricated using CMOS process. LED pixels in a same row share a common N-bus line that is connected to the ground of AM panel while p-electrodes of the LED pixels are electrically separated such that each p-electrode is independently connected to an output of drive circuits mounted on the AM panel. The LED micro-array is flip-chip bonded to the AM panel so that the AM panel controls the LED pixels individually and the LED pixels exhibit excellent emission uniformity. According to this constitution, incompatibility between the LED process and the CMOS process can be eliminated. | 01-09-2014 |
Chi Wing Keung, Guangzhou City CN
Patent application number | Description | Published |
---|---|---|
20110285284 | Light Emitting Device Using AC and Manufacturing Method of the Same - The present invention relates to a light emitting device using AC, comprising: at least one LED chip and an AC driving circuit chip, wherein the AC driving circuit chip comprises a substrate and a rectifying circuit integrated on the substrate. The LED chip is flipped and bonded on the AC driving circuit chip by flip-chip technology and electrically connected to the rectifying circuit, and the AC driving circuit chip converts the AC into DC for supply to the LED chip. The present invention further relates to a method of manufacturing the light emitting device using AC, comprising the following steps of: (1) forming an LED chip; (2) integrating a rectifying circuit on a substrate, forming two power source connecting terminals on the substrate, and forming an AC driving circuit chip; and (3) flip-chip bonding the LED chip on the AC driving circuit chip and in electrical connection with the rectifying circuit on the substrate. The light emitting device according to the present invention can be used by being directly connected to AC without needing any external integrated circuit device or electronic parts, thereby saving the assembling space and improving flexibility in use and meanwhile enhancing use efficiency of the light emitting regions. | 11-24-2011 |
Kwong Kwok Keung, Hong Kong CH
Patent application number | Description | Published |
---|---|---|
20100050710 | LOCKABLE CONTAINER HAVING AN INTEGRAL AND INTERNAL LOCKING MECHANISM AND METHODS OF USE - A lockable container for securing assets that has an integral and internal locking mechanism and methods of use are provided. An illustrative lockable container may include first and second covers configured to move between an open position, which allows access to the asset, and a closed position, which encloses the asset. The locking mechanism of the lockable container may include a locking mate arrangement operatively coupled to at least one of the first and second covers, and a locking member that is configured to move between an unlocked position and a locked position. The entirety of the locking member may be internal to the container when the locking member is in the unlocked position. A magnetic key arrangement may interact with the locking member to move the locking member between the unlocked and locked positions. | 03-04-2010 |
Lee Tai Keung, Hong Kong HK
Patent application number | Description | Published |
---|---|---|
20130279205 | HOLD-UP TIME ENHANCEMENT CIRCUIT FOR LLC RESONANT CONVERTER - An open loop half-bridge LLC power converter includes circuitry to reliably increase hold-up time without sacrificing efficiency. An LLC resonant circuit includes resonant inductance, a primary transformer winding, and resonant capacitance. An auxiliary circuit includes an auxiliary transformer winding, an inductor, and a third switching element coupled in series. A controller is coupled across a voltage sensor and effective thereby to determine a holdup time condition. In a “normal” operating condition the controller generates switch driver signals to turn OFF the third switching element and disable the auxiliary circuit, and in a hold-up time condition the controller turns ON the third switching element and enables the auxiliary circuit wherein the output voltage is increased via current supplied from the auxiliary winding. In various embodiments the auxiliary winding may be an auxiliary primary or secondary, or a secondary to an auxiliary primary winding of a second transformer. | 10-24-2013 |
Lee Tai Keung, Ma On Shan HK
Patent application number | Description | Published |
---|---|---|
20140268956 | POWER CONVERTER WITH SELF-DRIVEN SYNCHRONOUS RECTIFIER CONTROL CIRCUITRY - An AC-DC power converter is provided with two pairs of self-driven synchronous rectifier switches in addition to, or in place of, diode bridge rectifiers for boosting efficiency and reducing cost. An AC sensing circuit is coupled to AC input terminals, and a DC level shifting circuit applies a DC offset to an AC input signal received via the sensing circuit. A comparator circuit determines positive and negative half waves of the AC input signal relative to the DC offset value. Gate drive signals are provided for driving a first set of parallel rectifier switches during a positive half cycle of the AC input signal, and for driving a second and opposing pair of parallel rectifier switches during a negative half cycle of the AC input signal. In an embodiment, high side gate drive signals may be electrically isolated from the active rectifier control circuitry. | 09-18-2014 |
Lok Hang Keung, Hong Kong CN
Patent application number | Description | Published |
---|---|---|
20160047051 | FABRICATION OF MIRROR-LIKE COATINGS - This invention relates to an object with electroless plated coatings that includes an adhesion coating, a smoothening coating, a silver coating and an anti-scratch coating. A method of fabricating the electroless plated object is also described. | 02-18-2016 |
Lok Hang Keung, Tai Kok Tsui HK
Patent application number | Description | Published |
---|---|---|
20120295121 | FABRICATION OF MIRROR-LIKE COATINGS - Multi-layer coatings suitable for imparting a decorative, durable mirror-like finish to substrates such as metals are provided which contain a base coating of epoxy, a mirror-like coating, and a scratch-resistant surface coating. | 11-22-2012 |
Lok Hang Keung, Hong Kong HK
Patent application number | Description | Published |
---|---|---|
20140294679 | Air Purification Unit - The presently claimed invention provides a phtotocatalytic air purification unit, comprising a fin structure and an UV lamp. The fin structure comprises a plurality of fins coated with a layer of photocatalsyt, and said fin structure is able to increase the surface area for photocatalyst coating, ultimately increasing air pollutant removal efficiency with minimum air resistance. The air purification unit of the present invention is preferably installed in a HVAC system. | 10-02-2014 |
20150344365 | SELF-HEALING MATERIAL AND PREPARATION PROCESS THEREOF - The present application provides a self-healing material which comprises silica sol as self-healing agent encapsulated by a polymeric shell. The self-healing material may be further embedded in a concrete mixture to heal micro-cracks in concrete. A method for preparing the self-healing material is also provided. | 12-03-2015 |
Paul So Wing Keung, Cheung Sha Wan HK
Patent application number | Description | Published |
---|---|---|
20120087216 | WATCH - A watch having a band formed from a bistable spring is described. The band automatically wraps to or coils around a wrist, arm, or other limb of an individual wearing the watch. The band is formed from the bistable spring, which includes an extended configuration and a coiled configuration. The band forms a first portion and a second portion. An outer layer covers at least a portion of the bistable spring. The watch includes a watch module to display time data. A housing receives the watch module. The housing is integral with the outer layer. The housing is positioned between the first portion and the second portion of the band. | 04-12-2012 |
Wong Yuk Keung, Kowloon HK
Patent application number | Description | Published |
---|---|---|
20130115575 | Toy Landmine - The invention discloses a toy landmine comprising a housing, a generating means, and a triggering means; the triggering means includes a rammer for striking the container to release the gas, and a delay mechanism; the delay mechanism includes a base, a switching member for limiting the rammer, a sliding rod for controlling the switching member, and a movable plate for lifting the sliding rod; an intermediate part of the sliding rod has a diameter larger than that of its lower part, and a truncated conical surface is provided between the parts for smooth transition; the movable plate has one end hinged on the bottom of the base and is located below the sliding rod. With the delay mechanism, a smoke effect is generated after the upper lid is entirely opened, so that the upper lid will not be subjected damage and the smoke effect gets better. | 05-09-2013 |