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Chang, Chu-Nan

Chao-Chiang Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20100165245BACKLIGHT MODULE CAPABLE OF INCREASING LIGHT OUTPUT EFFICIENCY - A backlight module capable of increasing light output efficiency is disclosed. The backlight module includes a light emitting element, a light guide plate, a circuit board, and an intermediate layer. The light guide plate is disposed at a side of the light emitting element. The circuit board is disposed above the light emitting element and the light guide plate. The intermediate layer is disposed between the light emitting element and the light guide plate, and its light transmittance is greater than that of air. The intermediate layer decreases optical energy loss between the light emitting element and the light guide plate, and a goal to increase the light output efficiency of the backlight module is achieved. The present invention also improves an alignment between the light emitting element and the light guide plate when the light emitting element and the light guide plate are assembled together.07-01-2010

Cheng-Wei Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20080266885LIGHT SOURCE MODULE WITH HIGH HEAT-DISSIPATION EFFICIENCY - An exemplary light source module includes a printed circuit board (PCB), a heat-dissipating assembly, and a number of light emitting elements. The PCB includes a first surface, an opposite second surface, and a number of through holes. The heat-dissipating assembly is located adjacent to the second surface and includes a base, a number of heat-conducting elements, and a number of heat dissipation fins. The base includes a third surface defining a number of cavities therein and an opposite fourth surface. The heat dissipation fins extend from the fourth surface. Each of the heat-conducting elements is inlaid in a corresponding cavity. Each of the light emitting elements is placed in a corresponding through hole and thermally contacts a corresponding heat-conducting element. Each light emitting element electrically connects with the PCB and defines a respective light emitting surface located outside the corresponding through hole.10-30-2008

Chung-Min Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20090152582LIGHT EMITTING DIODE - A light emitting diode includes a reflective cup, an LED chip, and many electrodes, a first light scattering layer, and a phosphor layer. The reflective cup includes a bottom and a sidewall extending from the bottom. The LED chip is received in the reflective cup and mounted on the bottom thereof for emitting first light of a first wavelength. The electrodes each has a first end electrically connected to the LED chip and an opposite second end exposed at an outer surface of the reflective cup. The first light scattering layer formed in the reflective cup on the bottom thereof and covering the LED chip, which has a concave surface at an opposite side thereof to the LED chip. The phosphor layer formed on the concave surface of the light scattering layer for converting part of the first light into second light of a second wavelength.06-18-2009

Hsiu-Ping Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20100132983RIGID PRINTED CIRCUIT BOARD, PCB ASSEMBLY, AND PCB MODULE HAVING SAME - An exemplary rigid printed circuit board (PCB) includes a main portion, a supporting portion and a connecting portion. The supporting portion is for supporting electrical elements. The connecting portion includes two end portions and a main body therebetween. The main body is spaced from the main portion and the supporting portion. The two end portions are respectively connected to the main portion and the supporting portion. A PCB assembly and a PCB module using the same are also provided.06-03-2010
20120069576LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a convex, curved surface and opposite to the light incident surface. The first light emitting surface includes a first border; the first light emitting surface and the light incident surface cooperatively form a convex lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border, and the second light emitting surface is a rough surface for refracting light randomly.03-22-2012
20120069577LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The light incident surface is a concave surface and defines a receiving recess. The first light emitting surface is a convex curved surface and is opposite to the light incident surface. The first light emitting surface includes a first border, and the first light emitting surface and the light incident surface cooperatively form a convex lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface and adjacent to the first border. The longer the distance between a point of the second light emitting surface and the optical axis is, the longer the distance between the point and the light incident surface is.03-22-2012
20120075865LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface with a first central axis, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a convex, curved surface with a second central axis and is opposite to the light incident surface; the first light emitting surface comprises a first border. The first light emitting surface and the light incident surface cooperatively forming a convex lens portion. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border. The second light emitting surface is a rough surface for refracting light randomly. The distance between the first central axis and an inner side of the second light emitting surface is larger than the distance between the second central axis and the inner side of the second light emitting surface.03-29-2012
20120075866LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a Fresnel surface and opposite to the light incident surface. The first light emitting surface includes a number of concentric annular surfaces and a first border intersecting with some of the concentric annular surfaces. The first light emitting surface and the light incident surface cooperatively form a Fresnel lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border. An angle formed between any tangent plane of the second light emitting surface and a plane perpendicular to the optical axis is smaller than an angle formed between any tangent plane of the concentric annular surfaces passing any point on the first border and the plane perpendicular to the optical axis.03-29-2012
20120075867LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a convex, curved surface and is opposite to the light incident surface. The first light emitting surface includes a first border. The first light emitting surface and the light incident surface cooperatively form a convex lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border, and is a convex curved surface. An angle formed between any tangent plane of the second light emitting surface and a plane perpendicular to the optical axis is larger than an angle formed between any tangent plane of the first light emitting surface passing any point on the first border and the plane perpendicular to the optical axis.03-29-2012
20120075868LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a convex curved surface and is opposite to the light incident surface. The first light emitting surface includes a first border. The first light emitting surface and the light incident surface cooperatively form a convex lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border, and is a flat surface. An angle formed between the second light emitting surface and a plane perpendicular to the optical axis is larger than an angle formed between any tangent plane of the first light emitting surface passing any point on the first border and the plane perpendicular to the optical axis.03-29-2012
20120075877LENS AND LIGHT SOURCE MODULE - A lens includes a light incident surface, a first light emitting surface, and a second light emitting surface. The first light emitting surface is a convex curved surface and is opposite to the light incident surface. The first light emitting surface includes a first border. The first light emitting surface and the light incident surface cooperatively form a convex lens portion with an optical axis. The second light emitting surface is located at a side of the first light emitting surface adjacent to the first border. An angle formed between any tangent plane of the second light emitting surface and a plane perpendicular to the optical axis is larger than an angle formed between any tangent plane of the first light emitting surface passing any point on the first border and the plane perpendicular to the optical axis.03-29-2012
20120099316LIGHT EMITTING MODULE AND LED LAMP EMPLOYING IT - A light emitting diode lamp includes a lamp rack and a light emitting module mounted on the lamp rack. The ling emitting module includes a printed circuit board and a plurality of LEDs attached to the printed circuit board. The LEDs are arranged in an array. Each of the LEDs has a width W. Each of the LEDs spaces from an adjoining LED with a distance D. The width W and the distance D are in the condition that 0.5>W/D>0.15.04-26-2012

Hsueh-Chen Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20110019406REFLECTING COVER AND ILLUMINATION DEVICE USING THE SAME - A reflecting cover includes a substrate and a reflecting ring. The substrate is configured for receiving an LED. The reflecting ring is mounted on the substrate. The reflecting ring includes a plurality of reflecting units. The reflecting units are configured for reflecting light of the LED. The angles of the reflecting units relative to the substrate increase in turn along a direction away from the substrate.01-27-2011

Hui-Hua Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20120019461TOUCH DISPLAY DEVICE - The present invention provides a touch display device, which includes a display module and a touch panel. The display module includes a display panel and a control chip disposed on the display module to control the display module. The touch panel has a glass substrate and a driving chip disposed on the glass substrate to control at least one touching operation for the touch panel. The driving chip and the control chip are disposed in a misaligned manner.01-26-2012

Kuo-Cheng Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20120020094CEILING LAMP - A ceiling lamp includes a housing, a light source received in the housing, a transparent/translucent cover fixed to a bottom of the housing and a frame connected to the housing and located over the housing. The housing includes a top plate, a pair of wings extending downwardly from the top plate and two lids fixed to the top plate and the wings. The frame includes a top wall and two side walls and two arms extending downwardly from the top wall. Each lid forms a slot therein, and each arm forms a protrusion to engage in the slot to thereby secure the housing to the frame.01-26-2012
20120069555ENERGY-SAVING ILLUMINATION SYSTEM HAVING PIEZOELECTRIC MATERIALS - An energy-saving illumination system includes a piezoelectric floor, a revolving door, an accumulator, a light source, and an electrical power sensing device. The piezoelectric floor contains piezoelectric material therein. The revolving door comprises a power generating device. The accumulator is electrically connected to the piezoelectric floor and the power generating device. The light source is electrically connected with the accumulator. The electrical power sensing device is configured to detect the quantity of electric charge in the accumulator; the power generating device of the revolving door charges the accumulator according to the detected result obtained from the electrical power sensing device in respect to the accumulator.03-22-2012
20120069559LIGHTING MODULE - A lighting module includes a plurality of lighting units arranged in a matrix. Positive electrodes of all the lighting units in the first column are connected to form a positive electrode of the lighting module, and negative electrodes of all the lighting units in the last column are connected to form a negative electrode of the lighting module. In any column of the lighting module, negative electrodes of all the lighting units in the odd rows are connected to positive electrodes of all the lighting units in even rows of next column, and negative electrodes of all the lighting units in the even rows are connected to positive electrodes of all the lighting units in odd rows of the next column.03-22-2012
20120069582CEILING LAMP - A ceiling lamp includes a bracket fixed to a ceiling, a frame attached to the bracket, a housing secured to the frame and a light source received in the housing. An axis extends through the frame and the bracket to pivotably attach the bracket with the frame. A plurality of apertures are defined in the bracket and an aperture is defined in the frame. A fastener can be selectively extended through one of the apertures in the bracket and into the aperture in the frame, to thereby position the housing at a selected one of different orientations in respect to the ceiling.03-22-2012
20120074239TRAIN RAIL AND TRAIN TRACKS - A train rail includes an upper rail head, a lower rail head, a web, and at least one piezoelectric plate. The lower rail head is substantially parallel to the upper rail head. The web perpendicularly connects the upper rail head to the lower rail head. The at least one piezoelectric plate is positioned in the train rail and configured for producing electric power under pressure.03-29-2012
20120074814WHEEL WITH PIEZOELECTRIC RING AND VEHICLE HAVING SAME - A wheel includes a rim and a tire. The rim includes a ring body defining a central axis, two flanges, and two piezoelectric rings. The flanges extend from the circumference of the ring body around the central axis. A first annular groove is defined in the circumference of each flange around the central axis. The piezoelectric rings are mounted in the respective first annular grooves and configured for producing electric power under pressure. The tire encloses the rim.03-29-2012
20120087112WRITING INSTRUMENT PROVIDING ILLUMINATION - A writing instrument providing illumination includes a penholder, a pen core, a solid state lighting source module, and a rotating plate. The rotating plate connects to one end of the penholder. The solid state lighting source module is embedded in the rotating plate which can rotate to a specific angle. A battery providing electrical energy to the solid state lighting source module is arranged inside the penholder. When the rotating plate is turned to a position perpendicular to the penholder the solid state lighting source module is turned on and when the rotating plate is turned to a position adjacent to the penholder the solid state lighting source module is turned off.04-12-2012
20120092878HOUSING STRUCTURE OF A LAMP - The present invention relates to a housing structure of a lamp, which includes a square base board and a plurality of sidewalls. The sidewalls extend upwardly from a periphery of the base board, and connect with each other. The sidewalls each have at least a tongue at one side thereof, and a concave at an opposite side thereof. The adjacent sidewalls are connected together by the tongue of one sidewall engaging in the concave recessed inwardly from an outer surface the other sidewall. A spot welding is applied to each of the tongues.04-19-2012
20120096760MOSQUITO TRAP WITH SOLID STATE LIGHT EMITTING ELEMENTS - A mosquito trap includes a cover for a container, and a plurality of solid state lighting elements. The solid state lighting elements are arranged on the inside of the circular wall of the cover. The solid state lighting elements are electrically connected to a power supply and attract mosquitoes. The cover also has a high-voltage fine-wire grid to electrocute the mosquitoes which go inside the cover due to the attraction of the light generated by the solid state lighting elements.04-26-2012
20120097981LED CHIP - An LED (light emitting diode) chip includes a substrate, a first conduction layer formed on a top surface of the substrate, and a second conduction layer formed on the first conduction layer. The first conduction layer extends from a bottom surface of the second conduction layer to a circumferential surface of the second conduction layer, thereby surrounding the bottom surface and the circumferential surface of the second conduction layer. An active layer is sandwiched between the first and second conduction layers, to increase a contact area between the active later and the first conduction layer and the second conduction layer.04-26-2012

Kuo-Yuan Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20100171017Hanger - A hanger adapted to hang a display includes a main body, a glide component, and an adjustable component. The main body provides a trough and a first aperture penetrating the trough. The first aperture includes a first broad portion and a first narrow portion. The width of the first broad portion is greater than that of the first narrow portion. The glide component is disposed in the trough for gliding therein and provides a second aperture including a second broad portion and a second narrow portion. The width of the second broad portion is greater than that of the second narrow portion. The adjustable component is connected with the glide component to adjust the glide component gliding between a first position and a second position.07-08-2010

Shi-Ying Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20120099316LIGHT EMITTING MODULE AND LED LAMP EMPLOYING IT - A light emitting diode lamp includes a lamp rack and a light emitting module mounted on the lamp rack. The ling emitting module includes a printed circuit board and a plurality of LEDs attached to the printed circuit board. The LEDs are arranged in an array. Each of the LEDs has a width W. Each of the LEDs spaces from an adjoining LED with a distance D. The width W and the distance D are in the condition that 0.5>W/D>0.15.04-26-2012

Su-Chi Chang, Chu-Nan TW

Patent application numberDescriptionPublished
20090080205LED LAMP HAVING HEAT DISSIPATION STRUCTURE - An LED lamp for lighting purpose includes a lamp base, a heat sink, a plurality of LED modules and a blower. The lamp base encloses an inner space and defines a plurality of vents therein. The vents communicate the inner space with a surrounding atmosphere. The heat sink comprises a cylinder at a centre thereof. The cylinder has a through hole therein, which communicates with the inner space and vents of the lamp base and cooperates therewith to form an air passage. The LED modules are attached to a periphery of the heat sink. The blower generates an airflow circulating through the air passage to thereby dissipate heat generated by the LED modules.03-26-2009
20110019405STREET LAMP - An exemplary street lamp includes a solid-state light source and a light guiding plate. The light source is used to emit light to illuminate a portion of the traffic lane. The illuminated portion includes a first section and a second section at opposite sides of the projection of the light source on the traffic lane. The solid-state light source defines a central axis perpendicular to a lengthwise direction of the traffic lane. The plate includes a light incident surface and a light output surface at opposite sides thereof. The plate is used to deviate the light from the light source. In this manner, a maximum light intensity in the first section is less than or equal to 60 percent of a maximum light intensity in the second section.01-27-2011