Abstract:
측정용 패턴을 개선하여 측정의 신뢰도를 향상시킬 수 있는 측정용 패턴을 구비하는 반도체장치 및 이를 이용한 반도체장치의 측정방법이 개시된다. 본 발명에 따른 측정용 패턴을 구비하는 반도체장치는, 반도체 집적회로가 형성되는 칩영역과 상기 칩영역을 둘러싸는 스크라이브영역을 포함하는 반도체기판; 상기 스크라이브영역 내의 상기 반도체기판의 표면에 빈 공간의 형태로 형성되며, 계측설비의 측정용 빔이 투사되는 빔영역이 포함될 수 있도록 일정한 표면 단면적을 갖는 측정용 패턴; 및 상기 측정용 패턴의 내부에, 상기 측정용 패턴의 빈 공간의 표면 단면적을 감소, 예를 들어 빔영역의 표면 단면적 대비 더미 패턴의 표면 단면적의 비율이 5% 내지 15%가 될 수 있도록 더미 패턴을 포함한다.
Abstract:
PURPOSE: A method for forming a split gate electrode of an NVM(non-volatile memory) device is provided to make a gate oxide layer under a control gate of a split gate electrode have a withstand voltage with respect to a high voltage applied to the control gate and make the oxide layer in contact with a control gate sidewall smoothen a tunneling effect of electrons by making the oxide layers existing between the control gate and a floating gate and under the control gate have different thicknesses. CONSTITUTION: After a nitride layer pattern selectively exposing a polysilicon layer is formed, a spacer oxide layer with a uniform thickness is formed. An etch-back process is performed to form a spacer and a split polysilicon layer pattern and a source line is formed in the opening of the nitride layer pattern. After the exposed nitride layer pattern and the exposed polysilicon layer pattern are etched to form a split floating gate, the gate oxide layer existing in a region except the split floating gate is etched to a degree that a substrate(100) is not exposed. The second gate oxide layer with a uniform thickness is formed on the resultant structure.
Abstract:
PURPOSE: A method for fabricating a flash memory device is provided to smoothly transfer charges in an erasing operation by sharpening a portion between a floating gate and a control gate. CONSTITUTION: The first gate insulation layer(110), the first gate conductive layer and a mask insulation layer are formed on a substrate(100). A trench pattern is formed in the resultant structure. A trench is formed on the substrate and the inside of the trench is filled with a silicon insulation layer. The mask insulation layer is removed. A silicon nitride layer is formed on the substrate and the first gate pattern is formed in the silicon nitride layer. A polysilicon spacer is formed on the sidewall of the silicon nitride layer. A predetermined oxide layer is formed on the exposed surface of the polysilicon spacer and the first gate conductive layer. The first gate pattern is formed in the first gate conductive layer while a silicon insulation layer spacer is formed on the sidewall of the patterned silicon nitride layer. The gap between the silicon insulation layer spacers of the first gate conductive layer patterns is filled with a conductive layer to form a contact fill(210). The mask insulation layer is removed and a sidewall oxide layer(220) is formed on the sidewall of the first gate conductive layer. The second gate conductive layer(230) and a silicon nitride layer are formed. The second gate pattern is formed in the second gate conductive layer and the silicon nitride layer.
Abstract:
An inkjet printhead and method of manufacturing thereof is provided to allow printing work to be accomplished well and a heating element to be stably activated despite variation of current. An inkjet printhead comprises a substrate(31), an insulation layers(32,33) having a recess(43), equipped on the substrate; a heating element(36) whose top surface is concavely bent, provided on top of the recess; an electrode(37) contacting with the heating element in order to apply current to the heating element; a chamber layer(38) equipped on the top of the heating element; and a nozzle layer(39) having a nozzle(42), equipped on the top of the chamber layer.
Abstract:
액티브 영역 및 플로팅 게이트 전극의 미스얼라인을 방지할 수 있는 스플릿 게이트형 플래쉬 메모리 소자 및 그의 제조방법을 개시한다. 개시된 본 발명의 스플릿 게이트형 플래쉬 메모리 소자의 제조방법은, 반도체 기판상에 게이트 산화막 및 플로팅 게이트용 도전층을 순차적으로 적층하고, 상기 플로팅 게이트용 도전층이 형성된 상태에서 상기 반도체 기판의 소정 영역에 소자 분리막을 형성하여, 액티브 영역을 한정한다. 다음, 상기 액티브 영역상의 플로팅 게이트용 도전층의 소정 부분을 산화하여, 국부 산화막을 형성한다. 상기 국부 산화막의 형태로 플로팅 게이트용 도전층을 패터닝하여 플로팅 게이트 전극용 구조체를 형성한다.
Abstract:
PURPOSE: A method for fabricating a split-gate flash memory device is provided to prevent resistance from being reduced by a decreased area of a wordline by forming a vertical sidewall of the wordline and by making the width of the sidewall of the wordline uniform. CONSTITUTION: The first spacer surrounds a floating gate. The first junction region of a predetermined conductivity type is formed in the substrate, overlapping the first spacer. The first conductive line is formed on the first junction region, contacting the first spacer. A semiconductor substrate having an opposite conductivity type to the first junction region is prepared. The first insulation layer, the first conductive layer, the second insulation layer and the third insulation layer are sequentially formed on the substrate. The third insulation layer is etched to expose the second insulation layer. The exposed second insulation layer is eliminated. The remaining third insulation layer is removed. The first conductive layer and the second insulation layer are etched by a predetermined thickness to expose a part of the first conductive line and the first conductive layer. The fourth insulation layer is formed in a part of the first conductive line and the first conductive layer. The remaining second insulation layer is eliminated to expose the first conductive layer. The second insulation layer is removed by using the fourth insulation layer as a mask so that the exposed first insulation layer and the exposed conductive layer are etched to form the second gate insulation layer and the wordline.
Abstract:
PURPOSE: A method for manufacturing a split gate flash memory device is provided to be capable of uniformly conserving the line width of a select gate electrode by using an oxide pattern having a uniform thickness. CONSTITUTION: A floating gate electrode(104a), a pair of spacers(108), a source region(110), and a source line(112) are sequentially formed on a semiconductor substrate(100). After sequentially forming a gate oxide layer(114), a select gate conductive layer(116), an anti-reflective coating, and a silicon nitride layer on the resultant structure, a CMP(Chemical Mechanical Polishing) process is carried out on the resultant structure for exposing the surface of the source line. Then, residual anti-reflective coating is selectively removed. An oxide pattern(132) is selectively formed on the resultant structure by carrying out a thermal oxidation process at the resultant structure. Then, a select gate electrode is completed by etching the select gate conductive layer using the oxide pattern as an etching mask.
Abstract:
PURPOSE: A method for planarizing a non-volatile memory is provided to remove a stepper portion between a cell region of a flash memory device and a peripheral region of a logic device in a process for forming a word line. CONSTITUTION: A floating gate structure is formed on a cell region of a semiconductor substrate(100). A conductive layer(113) is formed on the floating gate structure and the semiconductor substrate(100). A hard mask layer is formed on the conductive layer(113). The first insulating layer is formed on the hard mask layer. The first insulating layer is removed from the cell region. The first insulating layer pattern is formed on a peripheral region. The hard mask layer is removed from the cell region. The second insulating layer(125) is formed on the first insulating layer pattern. The cell region and the peripheral region are planarized by removing the second insulating layer(125) and the first insulating layer pattern. A word line is formed on both sidewalls of the floating gate structure by patterning the conductive layer(113). A gate of a logic device is formed on the peripheral region.
Abstract:
본 발명에 따른 스플릿 게이트형 플래쉬 메모리 소자는 플로팅 게이트 및 콘트롤 게이트를 형성하기 전에 반도체 기판상에 마스크 패턴을 형성한 후, 상기 마스크 패턴의 측벽에 의하여 자기정렬되도록 플로팅 게이트 및 콘트롤 게이트를 차례로 형성한다. 메모리 셀을 구성하는 플로팅 게이트는 기판의 주면에 평행한 제1 면과, 기판의 주면에 수직인 제2 면과, 제1 면과 제2 면과의 사이에 연장되어 있는 커브면을 가진다. 콘트롤 게이트는 플로팅 게이트의 제1 면의 연장선과 플로팅 게이트의 제2 면의 연장선과의 사이에서 90° 보다 작은 각도 범위로 한정되는 영역 내에서 상기 플로팅 게이트의 커브면 위에 형성되어 있다.
Abstract:
스플릿 게이트형 플래쉬 메모리 장치의 제조 방법을 개시한다. 본 발명에 따른 스플릿 게이트형 플래쉬 메모리 장치의 제조 방법은, 고전압 영역 및 저전압 영역으로 구분되는 주변 회로 영역과 셀 영역을 갖는 반도체 기판의 상기 셀 영역에 플로팅 게이트 구조물을 형성하는 단계와, 상기 결과물 전면 상에 제 1 절연막을 형성하는 단계와, 상기 셀 영역에 형성된 상기 제 1 절연막을 제거하는 단계와, 상기 결과물 전면 상에 산화막을 형성하여 상기 셀 영역에 제 2 절연막을 형성하고 상기 주변 회로 영역에 제 3 절연막을 형성하는 단계와, 상기 저전압 영역에 형성된 제 3 절연막을 제거하는 단계와, 상기 결과물 전면 상에 산화막을 형성하여 상기 셀 영역에 제어 게이트 절연막 및 터널링 절연막을 형성하고 고전압 영역에 고전압 게이트 절연막을 형성하고 상기 저전압 영역에 저전압 게이트 절연막을 형성하는 단� �를 포함한다.