Abstract:
A manufacturing method of white light emitting diode is provided to improve the color uniformity and color reproducibility by separately making the fluorescent film which uniformly disperses the fluorescent substance and adheres to the encapsulating material molded on the light-emitting device chip. An electrode pattern(210) is prepared in the bottom surface of the groove formed in the upper plate(240). A lower plate(220) has an electrode pattern. The bottom surface of the groove portion has the LED chip(230). A terminal and an electrode pattern of the LED chip are electrically connected through a wire. The LED chip is fixed to the bonding method such as the epoxy and eutectic solder on the lower plate.
Abstract:
PURPOSE: A method for manufacturing a semiconductor light emitting device and a paste coating device used fro the same are provided to improve light uniformity by omitting an alignment process in a light emitting device. CONSTITUTION: An active layer is formed in a light emitting structure(20). A first conductive semiconductor layer and a second conductive semiconductor layer are formed in the light emitting structure. A mask is arranged in the light emitting structure. Paste(30) is coated through an opening part of the mask. The coated paste is planarized using a roller.
Abstract:
PURPOSE: Device and method for evaluating optical characteristic of an LED and a method of manufacturing an LED device are provided to reduce color dispersion of an LED device emitting a particular color of light including white and realize desired color coordinates easily and effectively. CONSTITUTION: A device(100) for evaluating optical characteristic of an LED emits white light through an optical converting filter(151) in a process of evaluating light emitting from an LED bare package(50) and measures color coordinates of the emitted white light. The LED bare package is formed by die bonding of an LED chip(10) to a package body(20) and by connecting of a chip to the lead frame(not shown) of the body by wire bonding if necessary. The LED bare package is an intermediate product before phosphor bearing resin(including a bag) is coated. The package body comprises a reflective cup and an LED chip can be mounted in the reflective cup.
Abstract:
PURPOSE: A light emitting diode package and a manufacturing method thereof are provided to overcome limitation of appearance and design of the light emitting diode package by forming a thin film on the top of the package mold and covering the original color of fluorescent substance. CONSTITUTION: A pair of lead frames(110) is prepared. A package mold(120) comprises a molding material filling space. An LED chip(130) is mounted on the lead frame inside the package mold. A thin film(160) opens and shuts the molding material fill space of the package mold. A molding material(150) is filled in the molding material filling space of the package mold.
Abstract:
A light emitting diode package and a method of manufacturing the same are provided to make the color distribution of a phosphor powder while obtaining uniform brightness distribution through a wide operation angle. A reflector(100) is made of a material having a high reflection coefficient, and an electrode(110) received inside the reflector and a part of the electrode is exposed to the outside through the reflector. An LED chip(120) is mounted on the surface of the reflector positioned between an exposed part of the electrode and the electrode. The LED chip and electrode are connected through an electrode connecting unit(130) which is received in the reflector. An encapsulant including a phosphor powder in order to cover the LED chip on the reflector is injection-molded.