Patents Assigned to PHOSTEK, INC.
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Patent number: 8574936Abstract: A method for manufacturing a semiconductor light emitting device includes: (a) providing a temporary substrate; (b) forming a multi-layered LED epitaxial structure, having at least one light emitting unit, on the temporary substrate, wherein a first surface of the light emitting unit contacts the temporary substrate, and the light emitting unit includes a n-type layer, an active region, and a p-type layer; (c) forming a n-electrode on the n-type layer; (d) forming a p-electrode on the p-type layer; (e) bonding a permanent substrate on the light emitting unit, the n-electrode and the p-electrode; (f) removing the temporary substrate to expose the light emitting unit; and (g) etching the exposed light emitting unit, to expose at least one of the n-electrode and the p-electrode.Type: GrantFiled: May 26, 2011Date of Patent: November 5, 2013Assignee: Phostek, Inc.Inventors: Ray-Hua Horng, Yi-An Lu, Heng Liu
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Publication number: 20130285010Abstract: A semiconductor light emitting device includes a substrate and a first epitaxial structure over the substrate. The first epitaxial structure includes a first doped layer, a first light emitting layer, and a second doped layer. The first doped layer includes a first dopant type and the second doped layer includes a second dopant type. A second epitaxial structure includes a third doped layer, a second light emitting layer, and a fourth doped layer. An adhesive layer is between the first epitaxial structure and the second epitaxial structure. One or more posts are located in the adhesive layer.Type: ApplicationFiled: April 27, 2012Publication date: October 31, 2013Applicant: PHOSTEK, INC.Inventor: Yi-An Lu
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Publication number: 20130285076Abstract: A light emitting diode (LED) device includes at least one stacking LED unit. The stacking LED unit includes a plurality of epitaxial structures interleaved with tunnel junctions. For a given predetermined input power, the plurality of epitaxial structures may reduce an operating current density of the stacking LED unit as compared to an LED unit with a single epitaxial structure and the same horizontal size. The reduced operating current density approaches a quantum efficiency peak. Additionally, for a given predetermined input power, the stacking LED unit may operate in a current density interval corresponding to a quantum efficiency within 20% decrement of the quantum efficiency peak.Type: ApplicationFiled: June 25, 2012Publication date: October 31, 2013Applicant: PHOSTEK, INC.Inventors: Heng LIU, Jinn Kong SHEU
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Publication number: 20130277692Abstract: A semiconductor light emitting device includes a substrate and a first epitaxial structure over the substrate. The first epitaxial structure includes a first doped layer, a first light emitting layer, and a second doped layer. A first electrode is coupled to the first doped layer. A second electrode is coupled to the second doped layer facing the same direction as the first electrode. A second epitaxial structure includes a third doped layer, a second light emitting layer, and a fourth doped layer. A third electrode is coupled to the third doped layer facing the same direction as the first electrode. A fourth electrode is coupled to the fourth doped layer facing the same direction as the first electrode. An adhesive layer is between the first epitaxial structure and the second epitaxial structure.Type: ApplicationFiled: April 19, 2012Publication date: October 24, 2013Applicant: PHOSTEK, INC.Inventors: Yuan-Hsiao Chang, Yi-An Lu
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Publication number: 20130264587Abstract: A semiconductor light emitting device includes a substrate, a first epitaxial structure, a first substantially transparent conducting layer, a second epitaxial structure, a second substantially transparent conducting layer, and a substantially transparent insulating layer. The first epitaxial structure is over the substrate and includes a first doped layer, a first light emitting layer, and a second doped layer. The first substantially transparent conducting layer is coupled to the second doped layer. The second epitaxial structure includes a third doped layer, a second light emitting layer, and a fourth doped layer. The second substantially transparent conducting layer is coupled to the fourth doped layer. The substantially transparent insulating layer is between the first substantially transparent conducting layer and the second substantially transparent conducting layer.Type: ApplicationFiled: April 4, 2012Publication date: October 10, 2013Applicant: PHOSTEK, INC.Inventor: Yuan-Hsiao Chang
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Publication number: 20130264588Abstract: A light emitting package includes a base and one or more LED units coupled to the base. The LED unit includes a plurality of vertically stacked epitaxial structures. Each epitaxial structure includes at least a first doped layer, at least a light emitting layer, and at least a second doped layer. At least one luminescent element is spaced a distance from the one or more LED units.Type: ApplicationFiled: April 9, 2012Publication date: October 10, 2013Applicant: PHOSTEK, INC.Inventors: Heng Liu, Shih-Feng Shao
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Patent number: 8546829Abstract: A semiconductor light emitting device and a method for making the semiconductor light emitting device are described. The semiconductor light emitting device includes an epitaxial structure having a first type doped layer, a light emitting layer, and a second type doped layer. The epitaxial structure may further include an undoped layer. A substrate is bonded to at least one surface of the epitaxial structure with an adhesive layer. One or more posts are located in the adhesive layer. The posts may have different widths depending on the location of the posts and/or the posts may only be located under certain portions of the epitaxial structure.Type: GrantFiled: July 19, 2011Date of Patent: October 1, 2013Assignees: Phostek, Inc., NCKU Research and Development FoundationInventors: Ray-Hua Horng, Heng Liu, Yi-An Lu
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Publication number: 20130228740Abstract: A light-emitting diode (LED) device includes at least one LED unit. Each LED unit includes at least one LED. Each LED includes an n-side nitride semiconductor layer, a p-side nitride semiconductor layer, and an active layer that is located between the n-side nitride semiconductor layer and the p-side nitride semiconductor layer. The active layer is includes one or more well layers. At least one of the well layers has a multilayered structure.Type: ApplicationFiled: April 25, 2012Publication date: September 5, 2013Applicant: PHOSTEK, INC.Inventors: Yen-Chang HSIEH, Ya-Hsuan SHIH
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Publication number: 20130221321Abstract: A light-emitting diode (LED) device includes a first LED, a second LED, and a superlattice structure by which the first and the second LEDs are stacked. The superlattice structure has an absorption spectra, the first active layer of the first LED has a first emission spectra, and the second active layer of the second LED has a second emission spectra. The absorption spectra is located on a shorter-wavelength side of at least one of the first and the second emission spectra.Type: ApplicationFiled: May 4, 2012Publication date: August 29, 2013Applicant: PHOSTEK, INC.Inventors: Jinn Kong Sheu, Chih-Yuan Chang, Heng Liu, Wei-Chih Lai
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Publication number: 20130200419Abstract: A semiconductor light emitting component including an epitaxial structure, a first electrode, a second electrode, a first cutout structure and a second cutout structure is provided. The epitaxial structure includes a first type doped layer, a light emitting portion and a second type doped layer. The first electrode is formed on a surface of the first type doped layer. The second electrode is formed on a surface of the second type doped layer. The first cutout structure is formed in the first type doped layer to expose at least a portion of the first electrode. The second cutout structure is formed in the first type doped layer, the light emitting portion and the second type doped layer so as to expose at least a portion of the second electrode.Type: ApplicationFiled: March 14, 2013Publication date: August 8, 2013Applicants: PHOSTEK, INC., NCKU RESEARCH AND DEVELOPMENT FOUNDATIONInventors: NCKU RESEARCH AND DEVELOPMENT FOUNDATION, Phostek, Inc.
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Publication number: 20130175674Abstract: A semiconductor apparatus includes a p-type doped layer, an n-type doped layer, and an internal electrical connection layer that is deposited and electrically coupled between the p-type doped layer and the n-type doped layer. In one embodiment, the internal electrical connection layer includes a group IV element and a nitrogen element, and the number of atoms of the group IV element and the nitrogen element is greater than 50% of the total number of atoms in the internal electrical connection layer. In another embodiment, the internal electrical connection layer includes carbon element with a concentration greater than 1017 atoms/cm3. In a further embodiment, the internal electrical connection layer is formed at a temperature lower than those of the p-type doped layer and the n-type doped layer.Type: ApplicationFiled: November 16, 2012Publication date: July 11, 2013Applicant: PHOSTEK, INC.Inventor: Phostek, Inc.
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Publication number: 20130175553Abstract: The present invention is directed to a light-emitting diode (LED) device, which includes at least one LED unit. Each LED unit includes at least one LED, which includes a first doped layer, a second doped layer and a conductive defect layer. The conductive defect layer is formed on the first or second doped layer. The conductive defect layer may be deposited between two LEDs, or between the first/second doped layer and an electrode.Type: ApplicationFiled: November 16, 2012Publication date: July 11, 2013Applicant: PHOSTEK, INC.Inventor: Phostek, Inc.
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Publication number: 20130178046Abstract: A method of manufacturing a semiconductor apparatus is disclosed. A first-type doped layer, a second-type doped layer, and an internal electrical connection layer are formed. The internal electrical connection layer is deposited and electrically coupled between the first-type doped layer and the second-type doped layer. In one embodiment, the internal electrical connection layer is formed by using a group IV based precursor and nitrogen based precursor. In another embodiment, the internal electrical connection layer is formed by a mixture comprising a carbon-contained doping source, and the internal electrical connection layer has a carbon concentration greater than 1017 atoms/cm3. In a further embodiment, the internal electrical connection layer is formed at a temperature lower than those of the first-type doped layer and the second-type doped layer.Type: ApplicationFiled: November 16, 2012Publication date: July 11, 2013Applicant: PHOSTEK, INC.Inventor: Phostek, Inc.
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Patent number: 8476663Abstract: A method for manufacturing a semiconductor light emitting component is disclosed in the present invention. First, a substrate is provided and an epitaxial structure is formed thereon, wherein a first surface of the epitaxial structure contacts the substrate. The epitaxial structure includes a first type doped layer, a light emitting portion and a second type doped layer. A first electrode is then formed on a second surface of the first type doped layer. Subsequently, a functional structure is formed on the first electrode using an in-situ method. Afterwards, the substrate is removed to expose the epitaxial structure. Finally, an etching step is performed to etch the exposed epitaxial structure, so as to expose at least a portion of the first electrode.Type: GrantFiled: May 6, 2011Date of Patent: July 2, 2013Assignee: Phostek, Inc.Inventors: Ray-Hua Horng, Yi-An Lu
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Publication number: 20130161667Abstract: A light emitting diode array includes a first light emitting diode with a first electrode and a second light emitting diode with a second electrode. A first dielectric layer is positioned between the light emitting diodes. A first portion of the first dielectric layer at least partially covers the first light emitting diode and a second portion of the first dielectric layer at least partially covers the second light emitting diode. An interconnect is located at least partially on the first dielectric layer. The interconnect connects the first electrode to the second electrode. A reflective layer is formed over at least the first and second portions of the first dielectric layer. A permanent substrate is coupled to a side of the light emitting diodes having the reflective layer.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: PHOSTEK, INC.Inventors: Chia-Nan Chen, Yi-An Lu
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Publication number: 20130161654Abstract: A light emitting diode array is described. The array includes a first light emitting diode with a first electrode and a second light emitting diode with a second electrode. The second light emitting diode is separated from the first light emitting diode. A first dielectric layer is positioned between the first light emitting diode and the second light emitting diode. An interconnect is located at least partially on the first dielectric layer that connects the first electrode to the second electrode. A second dielectric layer is formed over the first dielectric layer and the interconnect. A reflective layer is formed over the second dielectric layer. A permanent substrate is coupled to the reflective layer.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: PHOSTEK, INC.Inventor: Yi-An Lu
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Publication number: 20130105825Abstract: A light emitting diode array comprises a plurality of light emitting diode units connected in series and arranged for forming an array with n rows and m columns. At least one of the numbers m and n of the array is an odd number.Type: ApplicationFiled: April 19, 2012Publication date: May 2, 2013Applicant: PHOSTEK, INC.Inventors: Heng Liu, Shih-Feng Shao
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Publication number: 20130056774Abstract: This invention provides lenses having a pendant shape profile and their applications and forming methods. In an embodiment, the lenses are used to encapsulate one or more light-emitting diode chips so as to increase the light extraction efficiency.Type: ApplicationFiled: December 6, 2011Publication date: March 7, 2013Applicant: PHOSTEK, INC.Inventors: Jhih-Sin HONG, Shih-Feng SHAO
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Publication number: 20130023073Abstract: A method for forming a plurality of semiconductor light emitting devices includes forming an epitaxial layer having a first type doped layer, a light emitting layer, and a second type doped layer on a first temporary substrate. A second temporary substrate is coupled to an upper surface of the epitaxial layer with a first adhesive layer. The first temporary substrate is removed from the epitaxial layer to expose a bottom surface of the epitaxial layer. A permanent semiconductor substrate is coupled to the bottom surface of the epitaxial layer with a second adhesive layer. The second temporary substrate and the first adhesive layer are removed from the upper surface of the epitaxial layer. A plurality of semiconductor light emitting devices are formed from the epitaxial layer on the permanent semiconductor substrate.Type: ApplicationFiled: July 19, 2011Publication date: January 24, 2013Applicants: PHOSTEK, INC., NCKU RESEARCH AND DEVELOPMENT FOUNDATIONInventors: Ray-Hua Horng, Yi-An Lu
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Publication number: 20130023074Abstract: A method for forming a plurality of semiconductor light emitting devices includes forming an epitaxial layer having a first type doped layer, a light emitting layer, and a second type doped layer on a first temporary substrate. The epitaxial layer is separated into a plurality of epitaxial structures on the first temporary substrate. A second temporary substrate is coupled to the epitaxial layer with a first adhesive layer and the first temporary substrate is removed from the epitaxial layer. A permanent semiconductor substrate is coupled to the epitaxial layer with a second adhesive layer. The second temporary substrate and the first adhesive layer are removed from the epitaxial layer. The permanent semiconductor substrate is separated into a plurality of portions with each portion corresponding to at least one of the plurality of epitaxial structures to form a plurality of semiconductor light emitting devices.Type: ApplicationFiled: July 19, 2011Publication date: January 24, 2013Applicants: PHOSTEK, INC., NCKU RESEARCH AND DEVELOPMENT FOUNDATIONInventors: Ray-Hua Horng, Yi-An Lu