Abstract:
PURPOSE: An under-fill device for a semiconductor package is provided to reduce the under-fill process time without a void by using an under-fill device employing a dispensing method and to carry out the under-fill process for the plural substrates at the same time. CONSTITUTION: The device includes a blower unit(22) blowing air at a specific velocity, an air duct consisting of a main duct(23) through which the air supplied from the blower unit passes and a subsidiary duct(25) connected with the main duct and placed in a portion of a semiconductor device(32), and a dispenser(36) installed opposite to the subsidiary duct to supply a filler(38) at the other side of the semiconductor device of a substrate(30). If the filler is supplied to the semiconductor device while air is blown to the main duct at a specific velocity, the air flows into the subsidiary duct by the pressure difference between the main duct and the subsidiary duct and the filler is charged from one side to the other side of the semiconductor device.
Abstract:
PURPOSE: A semiconductor chip package is to prevent a drooping of a conductive wire for connecting a center pad and an inner lead, thereby improving a reliability of a product. CONSTITUTION: A semiconductor chip package comprises a semiconductor chip(36) provided with a center pad(38) arranged at an interval on a surface thereof and a conductive buffer pad(46) positioned at both sides of the center pad, a die pad(40) attached to a rear face of the semiconductor chip to support the chip, an inner lead(42) arranged at both sides of the chip, a conductive wire(48) for electrically connecting the center pad and the inner lead through the buffer pad, and a molding resin(54) for integrally sealing the above structure elements. The conductive wire is comprised of a first conductive wire(50) for electrically connecting the center pad and the buffer pad, and a second conductive wire(52) for electrically connecting the buffer pad and the inner lead. The buffer pad is attached via an adhesive tape(44) to a surface of the chip.
Abstract:
PURPOSE: A deposition package and method for manufacturing the same are provided for packaging a center pad chip and a edge pad chip on single semiconductor chip package. CONSTITUTION: A lead on chip type of lead frame includes a downset leading end(11), and an internal lead having a flat region integrally connected to the leading end. A center pad chip(30) having center pads is adhered to the lower surface of the leading end by an insulating adhesive and electrically connected to the upper surface of the leading end by a bonding wire. An edge pad chip(40) having edge pads is adhered to the upper surface of the flat region through an insulating adhesive and electrically connected to the upper surface of the flat region through a bonding wire. An insulation solution is hardened to the leading end, for electrically insulating the center pad chip and the edge pad chip. A molding resin is provided for protecting each of the parts from the outside environment. Thereby, it is possible to improve a mounting density of the package by packaging the center pad chip and the edge pad chip on single semiconductor chip package.
Abstract:
본 발명은 상, 하측의 반도체칩을 후면 접착, 적층하여 실장밀도를 향상시키도록 한 듀얼 적층패키지 및 그 제조방법에 관한 것이다. 본 발명의 목적은 적층패키지의 전체 높이를 낮추고 전기적 접속불량을 방지하도록 한 듀얼 적층패키지 및 그 제조방법을 제공하는데 있다. 이와 같은 목적을 달성하기 위한 본 발명에 의한 듀얼 적층패키지 및 그 제조방법은 패키지들을 적층하지 않는 대신에 상, 하측 반도체칩을 후면 접착, 적층하여 리드프레임의 수직리드들 사이에 위치하도록 상기 수직리드들에 각각 일체로 연결된 수평리드들 사이에 접착시키며 상측 반도체칩의 센터패드를 리드프레임의 수직리드에 와이어본딩하고, 하측 반도체칩의 센터패드를 상기 수직리드에 리드프레임의 수평리드에 와이어본딩하는 것을 특징으로 한다. 따라서, 본 발명은 듀얼 적층패키지의 전체 높이를 낮추어 실장밀도를 향상시킬 수 있다. 또한, 솔더 균열과 같은 불량 현상의 발생을 근본적으로 방지하여 제품 신뢰도를 향상시킬 수 있다.
Abstract:
본 발명은 내부리드가 다운-셋(Down-Set)된 리드 온 칩에 관한 것으로서, 리드 온 칩 패키지의 몰딩 공정시 캐비티 안에서 반도체 칩과 리드 프레임을 중심으로 상·하부에서 성형수지의 흐름이 균일하지 못해 생기는 패키지의 휨과 불완전 성형을 방지하기 위한 리드 온 칩 패키지에 관한 것이다. 비전도성 테이프로 반도체 칩과 접착되는 내부리드의 끝단이 다운-셋(Down-Set)되고, 끝단과 연결된 내부리드는 패키지 몸체 상부면을 따라 형성되어 있으며, 내부리드와 일체로 형성된 외부 리드는 패키지 몸체 측면상부로부터 돌출 되어 있고, 내부리드 끝단과 연결된 내부리드의 하부면에 홈이 형성된 것을 특징으로 하는 리드 온 칩 패키지를 제공함으로써, 성형 수지에 의한 칩의 틀어짐 발생을 방지하며, 불완전 성형 및 휨의 발생 가능성을 줄일 수 있게 된다. 또한, 외부 리드의 길이가 길어지게 되므로 패키지를 인쇄회로기판에 실장후 솔더 접합부의 내크랙성 측면에서 우수한 특성을 갖게 된다.
Abstract:
형광체 필름, 이의 제조방법, 발광칩에 형광층 도포방법이 개시된다. 개시된 형광체 필름은, 베이스 필름; 상기 베이스 필름 위에 형성된 것으로, 부분 경화된 수지물질에 형광입자가 혼합되어 이루어진 형광층; 및 상기 형광층 위에, 상기 형광층을 보호하기 위해 형성된 커버 필름;을 포함한다.
Abstract:
PURPOSE: A fluorescent body spreading device and a method for spreading a fluorescent body are provided to produce white light emitting diode having uniform light-emitting property by uniformly spreading the fluorescent body at the upper side and the side of a light emitting device. CONSTITUTION: A plurality of light emitting devices is formed on a wafer. The plurality of light emitting devices is rearranged on a carrier substrate according to light-emitting property. The carrier substrate in which the plurality of light emitting devices is rearranged is mounted on a top die. A bottom die is corresponded with the top die. A molding die is formed at one side of the bottom die. A fluorescent body is spread on the plurality of light emitting devices according to a compression molding progress. The plurality of light emitting devices on the carrier substrate is separated.
Abstract:
PURPOSE: A fluorescent substance coating method on a semiconductor light emitting device is provided to improve production yield of a light emitting device chip by coating a fluorescent substance in order to have uniform color properties. CONSTITUTION: Light emitting properties of a plurality of light emitting devices formed on a wafer are examined. The light emitting devices which have the same light emitting properties are arranged on a carrier substrate(110). A stencil mask is arranged on the light emitting devices. A fluorescent substance paste(30) is provided on the stencil mask. The fluorescent substance paste is uniformly distributed on a side surface of the upper surface of the light emitting devices using a squeeze process(120). Individual light emitting devices are separated.