摘要:
A method of detecting reticle error may include using an optical source of an exposure unit to cause light to be incident on a reticle installed in the exposure unit, and detecting the reticle error using only 0th diffraction light from among diffraction lights transmitted through the reticle. A method of detecting reticle error may include: installing a reticle, including a mask substrate and mask patterns having a critical dimension formed on the mask substrate, in an exposure unit to cause light to be incident on the reticle; exposing a photoresist film disposed on a wafer in the exposure unit using only 0th diffraction light from among diffraction lights transmitted through the reticle; developing the exposed photoresist film; and analyzing a thickness change, an image, or the thickness change and image of the developed photoresist film, in order to detect the reticle error at a wafer level.
摘要:
A method of detecting reticle error may include using an optical source of an exposure unit to cause light to be incident on a reticle installed in the exposure unit, and detecting the reticle error using only 0th diffraction light from among diffraction lights transmitted through the reticle. A method of detecting reticle error may include: installing a reticle, including a mask substrate and mask patterns having a critical dimension formed on the mask substrate, in an exposure unit to cause light to be incident on the reticle; exposing a photoresist film disposed on a wafer in the exposure unit using only 0th diffraction light from among diffraction lights transmitted through the reticle; developing the exposed photoresist film; and analyzing a thickness change, an image, or the thickness change and image of the developed photoresist film, in order to detect the reticle error at a wafer level.
摘要:
A photoresist pattern is formed, without being exposed, by using photoresist having a residual layer proportion characteristic by which the photoresist dissolves at a suitable rate in a developing solution. First, a target layer to be patterned and a photoresist layer are sequentially formed on a substrate having a pattern that defines a step on the substrate. Some of the photoresist layer is treated with the developing solution, to thereby form a photoresist pattern whose upper surface is situated beneath the step and hence, exposes part of the target layer. Next, the exposed part of the target layer, and the photoresist pattern are removed. A silicidation process may be carried out thereafter on the area(s) from which the target layer has been removed. The method is relatively simple because it does not involve an exposure process. Furthermore, the method can be used to manufacture devices having very fine linewidths, i.e., a small design rule, because it is not subject to the misalignment errors which can occur during a conventional exposure process.
摘要:
Metal contacts are formed within a string overhead area using a double patterning technology (DPT) process thereby allowing for the reduction of a string overhead area and a concomitant reduction in the chip size of a semiconductor device. A first mask pattern is formed by etching a first mask layer, the first mask pattern including a first opening formed in a cell region and a first hole formed in a peripheral region. A first sacrificial pattern is formed on the first mask pattern and the exposed first insulating layer of the cell region using a double patterning technology process. Contact holes are formed by exposing the target layer by etching the first insulating layer using the first mask pattern and the first sacrificial pattern as an etch mask. Metal contacts are then formed in the contact holes.
摘要:
Provided is a method of forming patterns of a semiconductor device, whereby patterns having various widths can be simultaneously formed, and pattern density can be doubled by a double patterning process in a portion of the semiconductor device. In the method of forming patterns of a semiconductor device, a first mold mask pattern and a second mold mask patter having different widths are formed on a substrate. A pair of first spacers covering both sidewalls of the first mold mask pattern and a pair of second spacers covering both sidewalls of the second mold mask pattern are formed. The first mold mask pattern and the second mold mask pattern are removed, and a wide-width mask pattern covering the second spacer is formed. A lower layer is etched using the first spacers, the second spacers, and the wide-width mask pattern as an etch mask.
摘要:
A photoresist composition may include formulas 1 and 2: where R is an acetal group or a ter-butyloxy carbonyl (t-BOC) group, n and m are integers, n/(m+n) is 0.01−0.8, and m/(m+n) is 1−[n/(m+n)], where r is an integer between 8-40. A method for forming photoresist patterns may include forming a photoresist layer on a semiconductor substrate and exposing and developing the photoresist layer using a mask pattern that includes first areas having a light transmissivity of about 100% and second areas having a light transmissivity of between about 10% and about 30%.
摘要:
Provided are methods of forming patterns of semiconductor devices, whereby patterns having various widths may be simultaneously formed, and a pattern density may be doubled by a double patterning process in a portion of the semiconductor device. A dual mask layer is formed on a substrate. A variable mask layer is formed on the dual mask layer. A first photoresist pattern having a first thickness and a first width in the first region, and a second photoresist pattern having a second thickness greater than the first thickness and a second width wider than the first width in the second region are formed on the variable mask layer. A first mask pattern and a first variable mask pattern are formed in the first region, and a second mask pattern and a second variable mask pattern are formed in the second region, by sequentially etching the variable mask layer and the dual mask layer by using, as etch masks, the first photoresist pattern and the second photoresist pattern. First spacers covering side walls of the first mask pattern and second spacers covering side walls of the second mask pattern are formed. The first mask pattern is removed, and then the substrate is etched in the first region and the second region by using the first spacers as an etch mask in the first region, and the second mask pattern and the second spacers as an etch mask in the second region.
摘要:
Provided are methods of forming patterns of semiconductor devices, whereby patterns having various widths may be simultaneously formed, and a pattern density may be doubled by a double patterning process in a portion of the semiconductor device. A dual mask layer is formed on a substrate. A variable mask layer is formed on the dual mask layer. A first photoresist pattern having a first thickness and a first width in the first region, and a second photoresist pattern having a second thickness greater than the first thickness and a second width wider than the first width in the second region are formed on the variable mask layer. A first mask pattern and a first variable mask pattern are formed in the first region, and a second mask pattern and a second variable mask pattern are formed in the second region, by sequentially etching the variable mask layer and the dual mask layer by using, as etch masks, the first photoresist pattern and the second photoresist pattern. First spacers covering side walls of the first mask pattern and second spacers covering side walls of the second mask pattern are formed. The first mask pattern is removed, and then the substrate is etched in the first region and the second region by using the first spacers as an etch mask in the first region, and the second mask pattern and the second spacers as an etch mask in the second region.
摘要:
Metal contacts are formed within a string overhead area using a double patterning technology (DPT) process thereby allowing for the reduction of a string overhead area and a concomitant reduction in the chip size of a semiconductor device. A first mask pattern is formed by etching a first mask layer, the first mask pattern including a first opening formed in a cell region and a first hole formed in a peripheral region. A first sacrificial pattern is formed on the first mask pattern and the exposed first insulating layer of the cell region using a double patterning technology process. Contact holes are formed by exposing the target layer by etching the first insulating layer using the first mask pattern and the first sacrificial pattern as an etch mask. Metal contacts are then formed in the contact holes.
摘要:
Provided is a method of forming patterns of a semiconductor device, whereby patterns having various widths can be simultaneously formed, and pattern density can be doubled by a double patterning process in a portion of the semiconductor device. In the method of forming patterns of a semiconductor device, a first mold mask pattern and a second mold mask patter having different widths are formed on a substrate. A pair of first spacers covering both sidewalls of the first mold mask pattern and a pair of second spacers covering both sidewalls of the second mold mask pattern are formed. The first mold mask pattern and the second mold mask pattern are removed, and a wide-width mask pattern covering the second spacer is formed. A lower layer is etched using the first spacers, the second spacers, and the wide-width mask pattern as an etch mask.