Abstract:
PURPOSE: A semiconductor memory device having a driver for compensating the parasitic resistance of a data input/output pad is provided to improve the driving performance and switching speed of a driver by compensating the parasitic resistance of a data input output pad which shares a power voltage pad and a ground voltage pad. CONSTITUTION: A first data input output pad(DQ1) is arranged adjacent to a power voltage pad. The first data input output pad is arranged as far away from the grounding voltage pad as possible. A normal pull-up driver(30) and an on-resistance compensation pull-down driver(40) are connected to the first data input output pad. A second data input output pad(DQ2) is arranged adjacent to the power voltage pad.
Abstract:
전자빔 조사를 이용한 미세패턴 형성방법에 대해 기재되어 있다. 이는, 기판 상에 감광막을 도포하는 공정, 감광막을 노광 및 현상하여 감광막패턴을 형성하는 공정 및 감광막패턴에 형성된 결과물에 전자빔을 조사하는 공정을 포함하는 것을 특징으로 한다. 따라서, 보다 미세한 패턴을 형성할 수 있으며, 최종 선폭을 예상하여 공정을 진행할 수 있는 잇점이 있다.
Abstract:
A composition for cleaning a phase shift mask is provided to effectively remove sulfate ion inducing haze and to reduce phase change and transmittance change generated with damage of a phase shift layer. A composition for cleaning a phase shift mask comprises ammonium salts of organic acids of which the ionization constant(Kb) of ammonium salts is greater than the ionization constant(Ka) of organic acid ions; hydrogen peroxide; and water. A method for cleaning a phase shift mask comprises the steps of: (S10) performing a first cleaning process on a substrate formed with the phase shifting mask by using a first cleaning solution including an sulfuric acid to remove photoresist and etching byproducts; and (S40) performing a second cleaning process by using the composition for cleaning the phase shift mask to remove sulfate ion remaining on the substrate without the damage of the phase shifting mask.
Abstract:
PURPOSE: A plasma etching chamber and a method for fabricating a photo mask using the same are provided to form a pattern of a shielding layer having a uniform CD(Critical Dimension) distribution on all areas of a photo mask substrate by improving a structure of the plasma etching chamber. CONSTITUTION: A plasma etching chamber(10) is formed with a chamber wall(12), a TCP(Transformer Coupled Plasma) coil(14) installed on an upper portion of the chamber wall(12), and the first power source(16) for applying RF power to the TCP coil(14). An electrode(30) is installed on a bottom portion of the inside of the chamber wall(12). The electrode(30) is used for supporting a photo mask substrate(20). The electrode(30) has a support side(32) for supporting the photo mask substrate(20) and an upper side(34) for surrounding the support side(32) around the support side(32). A sidewall(36) is extended between the upper side(34) and the support side(32). The support side(32) has a steppe portion. The second power source(18) is connected with a lower portion of the chamber wall(12). A heat transfer element(40) is installed around an edge of the support side(32). The heat transfer element(40) is connected with a heater(50).
Abstract:
전자빔 조사를 이용한 미세패턴 형성방법에 대해 기재되어 있다. 이는, 기판 상에 감광막을 도포하는 공정, 감광막을 노광 및 현상하여 감광막패턴을 형성하는 공정 및 감광막 패턴이 형성된 결과물에 전자빔을 조사하는 공정을 포함하는 것을 특징으로 한다. 따라서, 보다 미세한 패턴을 형성할 수 있으며, 최종 선폭을 예상하여 공정을 진행할 수 있는 이점이 있다.
Abstract:
휘어진 마스크 및 레티클에 대한 초점 조절 에러(error)를 검사장비에서 보정할 수 있는 마스크 및 레티클의 검사방법에 관하여 개시한다. 이를 위하여 본 발명은, 마스크에서 일정간격으로 마스크 상의 임의 영역에 초점을 조절하는 단계와, 상기 초점을 이용하여 마스크의 휜 형태를 감지하는 단계와, 상기 감지된 휜 형태를 바탕으로 초점을 자동 조절하면서 마스크의 결함을 검사하는 단계를 포함하는 것을 특징으로 하는 마스크 및 레티클의 검사방법을 제공한다.
Abstract:
마스크제조과정에서 라이팅(writing)장비의 좌표기준을 스테이지에 형성하는 대신 마스크에 형성한다. 따라서 마스크와 좌표기준간의 상대적인 좌표변동이 없어져서 마스크에 새겨지는 패턴의 정확도를 상기 라이팅 장비의 정렬 정확도만큼 보장할 수 있다. 이러한 마스크를 사용하여 물질층을 패터닝할 경우 정렬마진을 개선시켜 층간 겹침 정확도를 높일 수 있다.
Abstract:
An apparatus and a method of analyzing ions adsorbed on the surface of a mask are provided to separate ions absorbed in a mask surface within the short time accurately by using positive pressure to increase the boiling point of distilled water. A heating vessel(140) of the inside of a chamber(110) is filled with solvent of predetermined amount. A mask(180) dips in solvent within the heating container. Gas is supplied to the inside of the chamber and the inner pressure of the chamber is increased to constant pressure. As the solvent within the upper heating container is heated with constant temperature for constant time, the ion is separated from the surface of a mask. The solvent is sampled and analyzes the ion. The gas is purge gas.
Abstract:
A plasma etching chamber of a plasma etching apparatus used in an etching process for manufacturing a photomask and a method for manufacturing a photomask using the same. The plasma etching chamber includes an electrode having a supporting surface for supporting a photomask substrate and a top surface surrounding the supporting surface, a heat transfer element installed along a peripheral edge of the supporting surface, and a heater for supplying heat to the heat transfer element. In the method for manufacturing a photomask, a shading layer is formed on a transparent substrate. A photoresist layer pattern is formed on the shading layer to partially expose the shading layer. The shading layer is etched to form a shading layer pattern, using plasma with the photoresist layer pattern as an etching mask, under a state in which the temperature of at least one portion of the peripheral edge of the transparent substrate is maintained higher than a temperature at a center of the transparent substrate.