Patents Assigned to Lightizer Korea Co.
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Publication number: 20190259921Abstract: The present invention provides a round chip scale package comprising: a light emitting diode for providing blue light from a side surface and an upper surface thereof; and a three-dimensional fluorescent layer arranged to encompass the side surface and the upper surface of the light emitting diode, thereby converting the blue light emitted from the side surface and the upper surface of the light emitting diode into white light, wherein the three-dimensional fluorescent layer comprises a phosphor and silicon, and an edge region of the three-dimensional fluorescent layer is formed into a round shape.Type: ApplicationFiled: April 17, 2017Publication date: August 22, 2019Applicant: Lightizer Korea Co., LtdInventors: Jae-Sik MIN, Jae-Yeop LEE, Byoung-Gu CliO, Byoung-Chui CHG, Byoung-Kwon CliO
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Patent number: 9942963Abstract: The present invention relates to an apparatus for manufacturing fluorescent layers and, more particularly, to an apparatus for manufacturing fluorescent layers, which converts light from a light-emitting diode into white light by varying a wavelength of the light emitted from the light-emitting diode. The present invention provides the apparatus for manufacturing fluorescent layers includes a vertical frame and a fluorescent layer pattern hole formed in a direction vertical to the vertical frame in a fluorescent layer pattern form within the vertical frame.Type: GrantFiled: August 29, 2013Date of Patent: April 10, 2018Assignee: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Patent number: 9929309Abstract: Disclosed herein is a light-emitting diode (LED) package in accordance with an embodiment of the present invention, which includes an LED configured to provide light of a wavelength having a specific region, a circuit board electrically connected to the LED through bonding pads formed at the bottom of the LED, a phosphor layer formed as a cap, disposed to surround sides and a top of the LED, and configured to have sides and top thereof formed to a uniform thickness, and a buffer layer disposed between the top of the LED and a bottom of the phosphor layer and configured to suppress heat, generated from the top of the LED, from being transferred to the bottom of the phosphor layer and to prevent a bottom of the phosphor layer from being deviated from the top of the LED.Type: GrantFiled: January 30, 2015Date of Patent: March 27, 2018Assignee: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Patent number: 9590156Abstract: The present invention provides a light-emitting diode (LED) package including: a substrate on which a set of bonding pads are formed; an LED element configured to provide light of a predetermined wavelength region, having a set of chip pads formed on a top surface thereof and being attached on a top surface of the substrate; a set of gold wires connecting the bonding pads of the substrate with the chip pads of the LED element; a phosphor layer formed in a cap shape having side and top portions of a uniform thickness and being configured to surround sides and a top surface of the LED element while being spaced apart therefrom; and a filler disposed to fill a space formed between the phosphor layer and the LED element, wherein the LED element, the gold wires, and the bonding pads of the substrate are under the phosphor layer cap.Type: GrantFiled: February 10, 2015Date of Patent: March 7, 2017Assignee: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Patent number: 9525112Abstract: The present invention provides a method of manufacturing a phosphor for a light-emitting diode, including filling a phosphor frame in which phosphor models are formed in an engraving form with a fluorescent material solution including a fluorescent material that converts light provided by the light-emitting diode into white light by changing a wavelength of the light provided by the light-emitting diode, polishing a top surface of the phosphor frame filled with the fluorescent material solution, and drying the phosphor frame filled with the fluorescent material solution and polished.Type: GrantFiled: August 29, 2013Date of Patent: December 20, 2016Assignee: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Byoung Gu Cho
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Patent number: 9130132Abstract: The present invention provides a package for a light-emitting device, including the light-emitting device configured to provide light having a specific wavelength region, electrode pads formed on the light-emitting device, and a phosphor layer formed over the light-emitting device other than regions where the electrode pads are formed and configured to convert the light of the light-emitting device into white light by changing the wavelength of the light provided by the light-emitting device, wherein the phosphor layer is formed in a conformable thickness and is formed in a region wider than an upper region of the light-emitting device other than the regions where the electrode pads are formed.Type: GrantFiled: August 29, 2013Date of Patent: September 8, 2015Assignee: Lightizer Korea Co.Inventors: Jae Sik Min, Jae Young Jang, Byoung Gu Cho
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Patent number: 9023671Abstract: Disclosed herein is a method of disposing phosphor layers, which can prevent damage to phosphors and also effectively dispose phosphor layers at desired locations of Light-Emitting Diodes (LEDs) when the phosphor layers are detached and disposed at the top surfaces of the LEDs. According to an embodiment, phosphor layers fabricated by filling phosphor layer pattern holes within an area of the vertical frame with a phosphor solution are detached from the phosphor layer pattern holes by applying force downwardly or upwardly in a vertical manner.Type: GrantFiled: January 29, 2014Date of Patent: May 5, 2015Assignee: Lightizer Korea Co.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Patent number: 9006754Abstract: The present invention provides a multichip LED and method of manufacture in which white light is produced. Specifically, a plurality of electrically interconnected LED chips (e.g., interconnected via red metal wire) is selected for conversion of light to white light. In a typical embodiment, the LED chips comprise: a blue LED chip, a red LED chip, a green LED chip, and a target LED chip whose light output is converted to white light. A wavelength of a light output by one or more of the plurality of chips will be measured. Based on the wavelength measurement, a conformal coating is applied to the one or more of the LED chips. The conformal coating has a phosphor ratio that is based on the wavelength. Moreover, the phosphor ratio is comprised of at least one of the following colors: yellow, green, or red. Using the conformal coating the light output of the target LED is then converted to white light.Type: GrantFiled: March 31, 2010Date of Patent: April 14, 2015Assignee: Lightizer Korea Co.Inventor: Byoung gu Cho
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Publication number: 20150093843Abstract: Disclosed herein is a method of disposing phosphor layers, which can prevent damage to phosphors and also effectively dispose phosphor layers at desired locations of Light-Emitting Diodes (LEDs) when the phosphor layers are detached and disposed at the top surfaces of the LEDs. According to an embodiment, phosphor layers fabricated by filling phosphor layer pattern holes within an area of the vertical frame with a phosphor solution are detached from the phosphor layer pattern holes by applying force downwardly or upwardly in a vertical manner.Type: ApplicationFiled: January 29, 2014Publication date: April 2, 2015Applicant: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Publication number: 20140367548Abstract: The present invention relates to an apparatus for manufacturing fluorescent layers and, more particularly, to an apparatus for manufacturing fluorescent layers, which converts light from a light-emitting diode into white light by varying a wavelength of the light emitted from the light-emitting diode. The present invention provides the apparatus for manufacturing fluorescent layers includes a vertical frame and a fluorescent layer pattern hole formed in a direction vertical to the vertical frame in a fluorescent layer pattern form within the vertical frame.Type: ApplicationFiled: August 29, 2013Publication date: December 18, 2014Applicant: Lightizer Korea Co.Inventors: Jae Sik Min, Jae Young Jang, Jae Yeop Lee, Byoung Gu Cho
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Publication number: 20140170788Abstract: The present invention provides a method of manufacturing a phosphor for a light-emitting diode, including filling a phosphor frame in which phosphor models are formed in an engraving form with a fluorescent material solution including a fluorescent material that converts light provided by the light-emitting diode into white light by changing a wavelength of the light provided by the light-emitting diode, polishing a top surface of the phosphor frame filled with the fluorescent material solution, and drying the phosphor frame filled with the fluorescent material solution and polished.Type: ApplicationFiled: August 29, 2013Publication date: June 19, 2014Applicant: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Byoung Gu Cho
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Publication number: 20140084321Abstract: The present invention provides a package for a light-emitting device, including the light-emitting device configured to provide light having a specific wavelength region, electrode pads formed on the light-emitting device, and a phosphor layer formed over the light-emitting device other than regions where the electrode pads are formed and configured to convert the light of the light-emitting device into white light by changing the wavelength of the light provided by the light-emitting device, wherein the phosphor layer is formed in a conformable thickness and is formed in a region wider than an upper region of the light-emitting device other than the regions where the electrode pads are formed.Type: ApplicationFiled: August 29, 2013Publication date: March 27, 2014Applicant: LIGHTIZER KOREA CO.Inventors: Jae Sik Min, Jae Young Jang, Byoung Gu Cho
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Publication number: 20140080236Abstract: The present invention provides a multichip LED and method of manufacture in which white light is produced. A plurality of electrically interconnected LED chips is selected for conversion of light to white light. The LED chips comprise: a blue LED chip, a red LED chip, a green LED chip, and a target LED chip whose light output is converted to white light. A wavelength of a light output by one or more of the plurality of chips will be measured. Based on the wavelength measurement, a conformal coating is applied to the one or more of the LED chips. The conformal coating has a phosphor ratio that is based on the wavelength. The phosphor ratio is comprised of at least one of the following colors: yellow, green, or red. Using the conformal coating, the light output of the target LED is then converted to white light.Type: ApplicationFiled: March 5, 2013Publication date: March 20, 2014Applicant: Lightizer Korea Co.Inventor: Byoung gu Cho
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Patent number: 8414345Abstract: In general, embodiments of the present invention provide a 3-dimensional (3-D) display and method of manufacture. Specifically, under the embodiments of the present invention, a plurality of active lighting panels is stacked in successive fashion within a display. The plurality of active light panels typically comprises pixel-based active lighting panels, Liquid Crystal Display (LCD)-based active lighting panels, Light Emitting Diode (LED)-based active lighting panels, Organic Light Emitting Diode (OLED)-based active lighting panels, or a combination thereof. Using the stack of active lighting panels, a 3-D view is generated. This 3-D view is viewable to the naked eye of a viewer (e.g., without the use of 3-D glasses or any other type of assistive optics). Typically, the view is generated and controlled using active light device control circuitry, which is configured to control the output of the active lighting panels both individually and with respect to one another.Type: GrantFiled: July 19, 2010Date of Patent: April 9, 2013Assignee: Lightizer Korea Co.Inventor: Byoung gu Cho
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Patent number: 8017417Abstract: Embodiments of the present invention provide an LED having a Wavelength Shift Layer (WSL) and method of manufacture. Specifically, under embodiment of the present invention, a WSL layer is applied over an LED chip. The WSL itself typically comprises two layers: an adhesion layer applied over a set (at least one) of LED chips, and a conformal coating over the adhesion layer. The adhesion layer provides improved adhesive effect of the conformal coating to the LED chip(s). The conformal coating is comprised of a particular phosphor ratio that is determined based on a wavelength measurement of the underlying LED chip(s). Specifically, under the present invention, a wavelength of a light output by an LED chip(s) (e.g., blue or ultra-violet (UV)) is measured (e.g., at the wafer level). Typically, the phosphor ratio of is comprised of at least one of the following colors: yellow, green, or red. Regardless, this conformal coating is applied over a glue layer that itself is applied over the LED chip.Type: GrantFiled: March 31, 2010Date of Patent: September 13, 2011Assignee: Lightizer Korea Co.Inventor: Byoung gu Cho