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Ching-Hwa

Ching-Hwa Chang Jean, Taoyuan TW

Patent application number	Description	Published
20100308323	Method for improving light extraction efficiency of group-III nitride-based light emitting device - A method for improving light extraction efficiency of a group-III nitride-based light emitting device is disclosed. The method includes the steps of: providing a group-III nitride-based light emitting device having a top surface; disposing a seed layer on the top surface for increasing adhesion of the group-III nitride-based light emitting device; and forming a patterned oxide layer, having a plurality of nanostructure particles, without absorption of visible light on the seed layer. The size and shape of the nanostructure particles are controlled by reaction concentration, time and temperature during the patterned oxide layer formation, thereby improving light extraction efficiency of the group-III nitride-based light emitting device without damaging the group-III nitride-based light emitting device.	12-09-2010
20110089398	Method for improving internal quantum efficiency of Group-III nitride-based light emitting device - A method for improving internal quantum efficiency of a group-III nitride-based light emitting device is disclosed. The method includes the steps of: providing a group-III nitride-based substrate having a single crystalline structure; forming on the group-III nitride-based substrate an oxide layer, having a plurality of particles, without absorption of visible light, size, shape, and density of the particles are controlled by reaction concentration ratio of nitrogen/hydrogen, reaction time and reaction temperature; and growing a group-III nitride-based layer over the oxide layer; wherein the oxide layer prevents threading dislocation of the group-III nitride-based substrate from propagating into the group-III nitride-based layer, thereby improving internal quantum efficiency of the group-III nitride-based light emitting device.	04-21-2011
20110095314	Light emitting device and method for enhancing light extraction thereof - A method for enhancing light extraction of a light emitting device is disclosed. The method includes the steps of: providing a site layer on the light emitting device; placing a protection layer on the site layer; forming an array of pores through the protection layer and the site layer; and growing on the site layer an oxide layer, having a plurality of rods, each of which is formed in one of the pores. The shapes of the rods can be well controlled by adjusting reactive temperature, time and N	04-28-2011
20110127551	Method for enhancing electrical injection efficiency and light extraction efficiency of light-emitting devices - A method for enhancing electrical injection efficiency and light extraction efficiency of a light-emitting device is disclosed. The method includes the steps of: providing a site layer on the light-emitting device; placing a protection layer on the site layer; forming a cavity through the protection layer and the site layer; and growing a window layer in the cavity. The shape of the window layer can be well controlled by adjusting reactive temperature, reactive time, and N	06-02-2011
20110143466	METHOD OF FORMING VERTICAL STRUCTURE LIGHT EMITTING DIODE WITH HEAT EXHAUSTION STRUCTURE - The present invention is to provide a method of forming a vertical structure light emitting diode with a heat exhaustion structure. The method includes steps of: a) providing a sapphire substrate; b) depositing a number of protrusions on the sapphire substrate, each of which has a height of p; c) forming a buffer layer having a number of recesses, each of which has a depth of q smaller than p so that when the protrusions are accommodated within the recesses of the buffer layer, a number of gaps are formed therebetween for heat exhaustion; d) growing a number of luminescent layers on the buffer layer, having a medium layer formed between the luminescent layers and the buffer layer; e) etching through the luminescent layers and the buffer layer to form a duct for heat exhaustion; f) removing the sapphire substrate and the protrusions by excimer laser lift-off (LLO); g) roughening the medium layer; and h) depositing electrodes on the roughened medium layer.	06-16-2011

Ching-Hwa Lee, Dah-Tsuen Township TW

Patent application number	Description	Published
20100275730	Method for recycling precious metal from used printed circuit boards - A method is disclosed for recycling precious metal from used printed circuit boards. The used printed circuit boards are roasted with plasma at 800 degrees Celsius for less than 10 minutes, thus producing exhaust and residue that contains the precious metal. The exhaust is treated with an exhaust-treatment system before it is released to the atmosphere. The residue is ground and turned into scraps of a diameter smaller than 2 mm. The scraps are subjected to magnetic separation, thus separating ferromagnetic scraps from non-ferromagnetic scraps. The ferromagnetic scraps are refined. The non-ferromagnetic scraps are screened, thus separating tiny non-ferromagnetic scraps from big non-ferromagnetic scraps. The tiny non-ferromagnetic scraps contain silver and gold. The big non-ferromagnetic scraps contain copper.	11-04-2010

Ching-Hwa Lin, Taichung City TW

Patent application number	Description	Published
20090173008	PHOTOVOLTAIC CHARGED DRIVING DEVICE FOR SHUTTER - A photovoltaic charged driving device applicable to a shutter includes a driving module and a photovoltaic module. The driving module comprises a rechargeable power unit, a controller, a motor and a power input terminal, used to drive slats to change their angle. The photovoltaic module includes a power output terminal having a compatible connector with the power input terminal, and a solar panel used to receive sunlight to charge the rechargeable power unit so as to enable the driving module to chronically operate without changing a battery. The photovoltaic module can be conveniently connected to or removed from the driving module for receiving sunlight effectively.	07-09-2009

Ching-Hwa Yang, Sansia Township TW

Patent application number	Description	Published
20080316082	Remote control system and method for providing application program thereof - A remote control system including a remote controller and a computer system are provided. The computer system includes a remote control signal receiver, an image capturing device, a storage device and a processor. The remote controller outputs a remote control signal in response to a user's operation. When the remote controller is moved from steady state, the remote controller outputs the remote control signal as a motion detecting signal to the remote control signal receiver. The processor determines whether the remote control signal is a motion detecting signal. If the remote control signal is a motion detecting signal, the processor controls the image capturing device to capture an image of the user and stores the image into the storage device as a reference image and a set of personal setting data corresponding to the user's operation behavior. The processor loads the personal setting data for providing an application program accordingly.	12-25-2008