摘要:
A method for fabricating an aperture is disclosed. The method includes the steps of: depositing a dielectric layer and a hard mask on surface of a semiconductor substrate; patterning the hard mask by forming an aperture in the hard mask; utilizing a gas containing CaXb and CdHXe to perform a pre-treatment on the patterned hard mask and the dielectric layer, in which a, b, d and e from CaXb and CdHXe are integers and X represents halogen atom; and performing an etching process to transfer the aperture into the dielectric layer.
摘要:
The method of manufacturing an imprinting template according to the present invention utilizes a semiconductor manufacturing process and comprises a step of etching an oxide layer having a thickness of from 1000 to 8000 angstroms on a substrate by a microlithography and etching process, to form a pattern having a plurality of pillar-shaped holes, thereby forming an imprinting plate having a plurality of pillar-shaped holes. A material layer may be filled into the holes and a part of the oxide layer is removed to form an imprinting template having a plurality of pillar-shaped protrusions. Alternatively, a silicon substrate may be used instead of the substrate and the oxide layer. The imprinting template according to the present invention has advantages of mass production, fast production, and low cost, and is suitable to serve as the imprinting plate for making photonic crystals.
摘要:
A method of forming a contact hole is provided. A pattern is formed in a photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a first opening. Another pattern is formed in another photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a second opening. The pattern having the first, and second openings is exchanged into the interlayer dielectric layer, and etching stop layer to form the contact hole. The present invention has twice exposure processes and twice etching processes to form the contact hole having small distance.
摘要:
A photoresist trimming process is described. An etcher equipped with an etching chamber, a wafer holder, a TCP source and a TCP window is provided. After plasma is generated in the etching chamber, the etching chamber is heated without a wafer therein, and the temperature at the TCP window is monitored simultaneously. It is started, at any time after the temperature at the TCP window reaches a predetermined one, to treat wafers with photoresist layers to be trimmed thereon through the etching chamber.
摘要:
A method of forming a contact hole is provided. A pattern is formed in a photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a first opening. Another pattern is formed in another photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a second opening. The pattern having the first, and second openings is exchanged into the interlayer dielectric layer, and etching stop layer to form the contact hole. The present invention has twice exposure processes and twice etching processes to form the contact hole having small distance.
摘要:
An etching method is described, including a first etching step and a second etching step. The temperature of the second etching step is higher than that of the first etching step, such that the after-etching-inspection (AEI) critical dimension is smaller than the after-development-inspection (ADI) critical dimension.
摘要:
A substrate has thereon a conductive region to be partially exposed by the contact hole, a contact etch stop layer overlying the substrate and covering the conductive region, and an inter-layer dielectric (ILD) layer on the contact etch stop layer. A photoresist pattern is formed on the ILD layer. The photoresist pattern has an opening directly above the conductive region. Using the photoresist pattern as an etch hard mask and the contact etch stop layer as an etch stop, an anisotropic dry etching process is performed to etch the ILD layer through the opening, thereby forming an upper hole region. The photoresist pattern is removed. An isotropic dry etching process is performed to dry etching the contact etch stop layer selective to the ILD layer through the upper hole region, thereby forming a widened, lower contact bottom that exposes an increased surface area of underlying conductive region.
摘要:
A patterning method is provided. The method includes the steps of firstly forming an underlying layer, a silicon rich organic layer, and a photoresist layer on the material layer in succession. The photoresist layer is patterned, and the silicon rich organic layer is etched using the photoresist layer as a mask. Then, an etching process is performed to pattern the underlying layer using the silicon rich organic layer as a mask. Reactive gases adopted in the etching process include a passivation gas, an etching gas, and a carrier gas. The passivation gas forms a passivation layer at side walls of the patterned underlying layer during the etching process. After that, the material layer is etched using the underlying layer as a mask to form an opening in material layer. Finally, the underlying layer is removed.
摘要:
A method for forming a contact opening is described. A substrate formed with a semiconductor device thereon is provided, and then an etch stop layer, a dielectric layer and a patterned photoresist layer are formed sequentially over the substrate. The exposed dielectric layer and 20% to 90% of the thickness of the exposed etch stop layer are removed to form an opening. After the patterned photoresist layer is removed, an etch step using a reaction gas is conducted to remove the etch stop layer remaining at the bottom of the opening and form a contact opening that exposes a part of the device, wherein the reaction gas is selected from CF4, CHF3 and CH2F2. By using the method, a micro-masking effect is avoided, and oxidation at the bottom of the contact opening conventionally caused by the photoresist removal using oxygen plasma is also avoided.
摘要:
An etching method is described, including a first etching step and a second etching step. The temperature of the second etching step is higher than that of the first etching step, such that the after-etching-inspection (AEI) critical dimension is smaller than the after-development-inspection (ADI) critical dimension.