WO2013097541A1 - 光学邻近修正方法 - Google Patents

光学邻近修正方法 Download PDF

Info

Publication number
WO2013097541A1
WO2013097541A1 PCT/CN2012/083723 CN2012083723W WO2013097541A1 WO 2013097541 A1 WO2013097541 A1 WO 2013097541A1 CN 2012083723 W CN2012083723 W CN 2012083723W WO 2013097541 A1 WO2013097541 A1 WO 2013097541A1
Authority
WO
WIPO (PCT)
Prior art keywords
indentation
optical proximity
amount
proximity correction
metal layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/083723
Other languages
English (en)
French (fr)
Inventor
陈洁
王谨恒
张雷
万金垠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSMC Technologies Fab2 Co Ltd
Original Assignee
CSMC Technologies Fab2 Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CSMC Technologies Fab2 Co Ltd filed Critical CSMC Technologies Fab2 Co Ltd
Publication of WO2013097541A1 publication Critical patent/WO2013097541A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/36Masks having proximity correction features; Preparation thereof, e.g. optical proximity correction [OPC] design processes

Definitions

  • the present invention relates to a lithography process in the semiconductor manufacturing industry, and more particularly to optical proximity correction during the preparation of a mask (Optical Proximity Correction, OPC) method.
  • OPC Optical Proximity Correction
  • Integrated circuit manufacturing technology is a complex process that is updated every 18 to 24 months.
  • a key parameter characterizing integrated circuit fabrication technology the minimum feature size, ie critical dimension (Critical Dimension), from the initial 125um to the current 0.13um or even smaller, makes millions of components on each chip possible.
  • Lithography is the driving force behind the development of integrated circuit manufacturing processes and one of the most complex technologies. Lithography has revolutionized the performance of the chip compared to other single manufacturing technologies.
  • the structure of the integrated circuit is first copied to a larger (relative to the silicon used for production) quartz glass plate called a mask by a specific device, and then a specific wavelength is generated by a lithographic apparatus.
  • the light (such as ultraviolet light with a wavelength of 248 nm) replicates the structure of the integrated circuit on the mask to the silicon wafer used to produce the chip.
  • the circuit structure will produce distortion during the process of copying from the mask to the silicon wafer, especially in the manufacturing process stage of 0.13 um and below. If the distortion is not corrected, the entire manufacturing technology will fail.
  • the cause of the distortion is mainly the optical proximity effect (Optical Proximity Effect, OPE), that is, since the projection exposure system is a partially coherent optical imaging system, the intensity spectrum amplitude of the ideal image has different distributions in different directions, but due to diffraction limitation and severe energy loss caused by nonlinear filtering of the imaging system, The effect of the rounding and contraction of the space image.
  • OPE optical Proximity Effect
  • OPC optical proximity correction
  • FIG. 1A is the original graphic data provided by the customer, and the concave and convex structure 1 appears in the middle metal line identified in the figure.
  • Fig. 1B is a schematic view of the indentation process in which the first indentation amount to the concavo-convex portion is 18 nm, and the second indentation amount in other portions is 12 nm.
  • FIG. 1C is a simulation diagram of the simulated OPC processing of the indented graphics. It can be seen that the metal line after the indentation process is relatively large in error with the actual metal line to be obtained, which in this case reaches about 30 nm, which is unacceptable for the OPC correction.
  • the present invention proposes an optical proximity correction method capable of reducing the amount of indentation error caused by the concave-convex structure in the optical proximity correction processing of the metal lines, and improving the accuracy of the optical proximity processing.
  • An optical proximity correction method comprises the steps of:
  • the metal layer pattern is indented by adjusting to the first indentation amount and the second indentation amount when the difference is zero.
  • the amount of indentation in the metal line is modified, so that the indentation amount can achieve the best effect of the optical proximity correction.
  • Figure 1A is the original graphics provided by the customer.
  • Fig. 1B is an effect diagram obtained after the indentation processing.
  • Fig. 1C is a simulation diagram obtained by simulating an exposure effect.
  • FIG. 2 is a schematic flow chart of a method for correcting a metal line of the present invention.
  • the idea of the invention is to pre-process the graphics before performing OPC processing on the graphics provided by the client, and replace the irregular parts of the graphics with the regular graphics according to the automatic recognition and correction of the software level. In this way, when doing OPC processing, it is possible to avoid shapes such as sharp corners that are not conducive to mask patterning due to irregular graphics, thereby improving the accuracy of OPC processing.
  • FIG. 2 is a schematic flow chart of the optical proximity correction method of the present invention. As shown in the figure, the correction method includes the steps:
  • S11 providing a metal layer pattern composed of a plurality of metal lines, wherein the metal layer pattern corresponds to a metal line including the concave-convex structure.
  • the metal layer pattern provided in addition to the graphic structure inside, also requires the feature size and process requirements of the given pattern.
  • the metal layer In the entire semiconductor manufacturing process, the metal layer is usually used as an electrical connection, so the structure of the metal layer pattern is relatively simple, and is mainly distributed in the form of metal traces.
  • some relief structures are often added to certain metal lines (as shown in Figure 1A). In order to overcome the influence of these concave-convex structures on the OPC process, it is necessary to treat these metal lines having a concave-convex structure. In this step, the metal lines containing the relief structure are first identified by the pattern recognition software.
  • the first indentation amount is indented at a relatively wide portion of the concavo-convex structure, and the other indentation is indented into the second indentation amount.
  • the initial value of the first indentation amount and the second indentation amount in the first indentation process of the graphic is an empirical value called for the feature size and process requirement of the metal layer pattern, and the empirical value refers to Some of the more optimized values of mature products with the same or similar processes. For example, in the 0.13um process, the indentation amount is 7-10 nm for a 0.24 um wide metal line, and the retraction amount is 5-7 nm for a 0.20 um wide metal line. Typically, the first amount of indentation should be greater than the second amount of indentation.
  • the simulated optical proximity correction method includes the steps of:
  • a lithography process parameter is determined based on a feature size of the metal layer pattern.
  • the lithography process performed under different metal layer processes uses different process specifications. Therefore, it is necessary to determine the specific parameters of the lithography process after the metal layer pattern process specification.
  • the specific parameters of the lithography process include optical parameters of the exposure light path, material parameters of the photoresist, and chemical parameters of the etching process.
  • the optical parameters of the exposure light path mainly refer to specific parameters such as the numerical aperture of the optical path, the scaling factor, and the exposure light source.
  • the material parameters of the photoresist mainly refer to specific parameters such as resolution, exposure rate, and photosensitivity of the photoresist material.
  • the chemical parameters of the etching process mainly refer to specific parameters such as acidity and alkalinity and chemical properties of the etchant. Due to the different lithography processes used to make different grades of features, it is necessary to have a clear positioning of the lithography process parameters.
  • An optical proximity correction model is determined according to the lithography process parameters, and an optical proximity correction operation program is established. After the lithography process parameters are determined, OPC modeling can be performed.
  • the basic flow of modeling is as follows: First, pre-designed test patterns are placed on the targets to collect data from a set of real lithographic wafers. Then use the same test pattern, using the OPC modeling tool to simulate, if the size of the obtained image is in good agreement with the corresponding real wafer data, then it can be considered in such a limited sample space (sampling) In space), the simulated model is a good description of the entire exposure system and chemical effects, so it can be used to quantify the OPE effect in the foreseeable situation, which can be used for OPC.
  • the modeling process can also be simplified into the process of collecting data, and only by inputting the corresponding data model, the user can retrieve Go to the required OPC model.
  • optical proximity correction operation program is executed on the metal layer pattern after the indentation processing to obtain a simulation correction pattern of the metal layer pattern.
  • the step of judging and modifying the amount of indentation is increased by performing OPC processing on the metal line, so that the concave-convex structure in the metal line can reach the most when performing OPC correction.
  • Good retraction which reduces the distortion and deviation between the lithographic pattern and the mask pattern obtained on the actual silicon wafer. To improve the circuit performance and production yield of the product.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)

Abstract

一种光学邻近修正方法,基于光学邻近修正工艺,通过在对金属线条进行OPC处理时,增加判断和修改缩进量的步骤,使得金属线条中的凹凸结构在进行OPC修正时能够达到最佳的缩进量,从而减少实际硅片上得到的光刻图形与掩膜版图形之间存在变形和偏差,以提高产品的电路性能和生产成品率。

Description

光学邻近修正方法
【技术领域】
本发明涉及半导体制造工业中的光刻制程,尤其涉及对制备掩膜过程中的光学邻近修正(Optical Proximity Correction, OPC)方法。
【背景技术】
集成电路制造技术是一个复杂的工艺,每隔18到24个月就会更新换代。表征集成电路制造技术的一个关键参数最小特征尺寸即关键尺寸(Critical Dimension),从最初的125um发展到现在的0.13um甚至更小,这使得每个芯片上几百万个元器件成为可能。
光刻技术是集成电路制造工艺发展的驱动力,也是其中最复杂的技术之一。相对于其他的单个制造技术来说,光刻对芯片性能的提高有着革命性的贡献。在光刻工艺开始之前,集成电路的结构会先通过特定的设备复制到一块较大(相对于生产用的硅片来说)名为掩膜的石英玻璃片上,然后通过光刻设备产生特定波长的光(如波长为248nm的紫外光)将掩膜上集成电路的结构复制到生产芯片所用的硅片上。电路结构在从掩膜复制到硅片过程中,会产生失真,尤其是到了0.13um及以下制造工艺阶段,如果不去改正这种失真的话会造成整个制造技术的失败。所述失真的原因主要是光学邻近效应(Optical Proximity Effect, OPE),即由于投影曝光系统是一个部分相干光成像系统,理想像的强度频谱幅值沿各向有不同的分布,但由于衍射受限及成像系统的非线性滤波造成的严重能量损失,导致空间像发生圆化和收缩的效应。
要改正这种失真,半导体业界的普遍做法是利用预先在掩膜上进行结构补偿的方法,这种方法叫做光学邻近修正(OPC)方法。OPC的基本思想是:对集成电路设计的图形进行预先的修改,使得修改补偿的量正好能够补偿曝光系统造成的OPE效应。因此,使用经过OPC的图形做成的掩膜,通过光刻以后,在晶片上就能得到最初想要的电路结构。
在一些金属层图形的设计中,按照各金属线条的作用,往往需要在一些金属线条中设计凹凸结构。在对这些凹凸结构做OPC修正前,考虑到光的衍射作用,需要做一定量的缩进,即运行OPC程序时处理的对象是缩进后的图形而非实际图形。由于这些凹凸结构的尺寸会根据各个厂家的设计而定,没有统一的规格,而现有的OPC工艺中,仅仅是做缩进处理,却没有给出缩进量的具体值,导致光罩生产厂家在对这些凹凸结构进行OPC处理时,出现缩进过大或过小的误差,严重影响OPC修正的准确度。
请参见图1A至图1C,图1A是客户提供的原始图形数据,在图中标识出来的中间金属线条出现了凹凸结构1。图1B是经过缩进处理后的示意图,该缩进处理中,对凹凸部分的第一缩进量为18nm,其它部位的第二缩进量为12nm。图1C对缩进后的图形进行仿真OPC处理后的仿真图。可以看到缩进处理后的金属线条与实际所要得到的金属线条误差比较大,在本例中达到30nm左右,这对于OPC修正来说,是不能接受的。
因此有必要对现有的金属线条修正方法进行改正,以提高修正处理中的准确度。
【发明内容】
有鉴于此,本发明提出了一种光学邻近修正方法,该修正方法能够减少因凹凸结构对金属线条的光学邻近修正处理中的带来的缩进量误差,提高光学邻近处理过程的准确度。
根据本发明的目的提出的一种光学邻近修正方法,包括步骤:
提供一有多条金属线条组成的金属层图形,该金属层图形对应于包括凹凸结构的金属线条;
将所述金属层图形上对应于所述金属线条的尺寸进行缩进处理,其中在对应于所述凹凸结构处缩进第一缩进量,非对应于所述凹凸结构处缩进第二缩进量;
对所述金属层图形进行仿真光学邻近修正,得到仿真的修正图形;
判断所述仿真的修正图形中金属线条的仿真尺寸与实际尺寸之间的差别;
根据所述差别修改第一缩进量和/或第二缩进量的值;
以调整至所述差别为零时的第一缩进量、第二缩进量对该金属层图形进行缩进。
上述方法中,通过判断光学邻近修正后,仿真图形与实际图形之间的差别,修改对金属线条中的缩进量,使缩进量能够达到光学邻近修正的最佳效果。从而避免因凹凸结构对OPC处理带来的影响,大大提高了OPC处理的准确度。
【附图说明】
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1A是客户提供的原始图形。
图1B是经过缩进处理后得到的效果图。
图1C是对曝光效果进行模拟得到的仿真图。
图2是本发明的金属线条修正方法的流程示意图。
【具体实施方式】
在0.13um以下技术节点的关键层次比如TO(有源区层次)、GT(栅氧层次)、An(金属连线层次)的CD(关键尺寸)越来越小,CD已经接近甚至小于光刻工艺中所使用的光波波长,因此光刻过程中,由于光的衍射和干涉现象, 实际硅片上得到的光刻图形与掩膜版图形之间存在一定的变形和偏差, 光刻中的这种误差直接影响电路性能和生产成品率. 为尽量消除这种误差, 一种有效的方法是光学邻近效应修正(OPC)方法。正如背景技术中所述,在一些金属层次的图形中,会根据需要在一些金属线条中加入一些凹凸结构。在对这部分金属线条做OPC处理时,由于缺乏缩进量的判断,往往造成缩进量误差,使得OPC处理出现不准的现象,严重影响器件的实际功能,导致产品良率问题。
本发明的思路是在对客户提供的图形做OPC处理之前,对图形做预处理,依据软件级的自动识别和纠正,将图形中非规则的部分用规则的图形代替。这样一来,在做OPC处理时,就可以避免因非规则图形带来的诸如尖角等不利于掩膜图形制作的形状,从而提高了OPC处理的准确性。
下面将以具体实施方式对本发明的金属线条的修正方法进行详细说明。
请参见图2,图2是本发明的光学邻近修正方法的流程示意图。如图所示,该修正方法包括步骤:
S11:提供有多条金属线条组成的金属层图形,该金属层图形中对应于包括凹凸结构的金属线条。所提供的金属层图形,除了给定里面的图形结构外,还需要给定图形的特征尺寸以及工艺需求。在整个半导体制程工艺中,金属层通常用作电性连接,因此金属层图形的结构相对比较简单,主要以金属走线的形式分布。在一些多层金属设计中,除了金属线条外,往往会在某些金属线条上增加一些凹凸结构(如图1A中所示)。对了克服这些凹凸结构对OPC处理时带来的影响,有必要对这些具有凹凸结构的金属线条做处理。在该步骤中,首先就是通过图形识别软件,将这些含有凹凸结构的金属线条识别出来。
S12:将所述金属层图形上对应于所述金属线条进行缩进处理,其中在对应于所述凹凸结构处缩进第一缩进量,非对应于所述凹凸结构处缩进第二缩进量。这里的缩进处理是指对该金属线条的两侧边,分别以同样的缩进量,使该线条变窄。由于在光刻工艺中,最终图形的尺寸受光衍射作用有略微的放大,所以在做OPC处理时,需要将设计图形的尺寸做缩进以抵消光刻中的放大。缩进时,在凹凸结构相对较宽的部位缩进第一缩进量,而其它部位缩进第二缩进量。该第一缩进量和第二缩进量在本图形做第一次缩进处理中的初始值为针对该金属层图形的特征尺寸和工艺需要而调用的经验值,该经验值是指在一些具有相同或相近工艺的成熟产品中比较优化的值。比如在0.13um工艺下,对于0.24um宽的金属线条,其缩进量为7-10nm,对于0.20um宽的金属线条,其缩进量为5-7nm。通常,第一缩进量应大于第二缩进量。
S13:对缩进处理之后的金属层图形进行仿真光学邻近修正,得到仿真的修正图形。该仿真光学邻近修正方法包括步骤:
根据所述金属层图形的特征尺寸确定光刻工艺参数。不同金属层工艺下进行的光刻工艺,所使用到的工艺规格都不相同,因此先要根据金属层图形工艺规格之后,还需要确定光刻工艺的具体参数。所述光刻工艺具体参数包括曝光光路的光学参数、光刻胶的材料参数以及刻蚀工艺的化学参数。所述曝光光路的光学参数主要指光路的数值孔径、缩放倍率以及曝光光源等具体参数。所述光刻胶的材料参数主要是指光刻胶材料的分辨率、曝光速率、光敏度等具体参数。所述刻蚀工艺的化学参数主要是指刻蚀剂的酸碱性以及化学性质等具体参数。由于制作不同等级特征尺寸所采用到的光刻工艺不同,因此需要对光刻工艺参数有个明确的定位。
根据所述光刻工艺参数确定光学邻近修正模型,建立光学邻近修正的运算程序。在确定完光刻工艺参数后,可以进行OPC建模。建模的基本流程如下:首先是在标片上放置预先设计的测试图形,收集到一组真实光刻晶片的数据。然后使用同样的测试图形,利用OPC建模工具进行模拟,如果摸以得到的图形尺寸与相对应的真实晶片数据能够很好的符合,那么就可以认为在这样一个有限的样品空间(sampling space)中,模拟得到的模型能够很好的描述整个曝光系统和化学效应,因此就能用来定量在预知情况下的OPE效应,从而可以用来进行OPC。在工厂端,由于厂家在多数情况下会对自家生产的产品工艺建有相应的数据库,因此建模过程也可简化为调取数据的过程,只需输入相对应的数据模型,就能调取到所需的OPC模型。
在建完OPC模型后,还需要编写OPC处理的程序,以用于将适用的图形进行OPC处理。
最后对所述缩进处理之后的金属层图形运行所述光学邻近修正的运算程序,得到该金属层图形的仿真修正图形。
S14:判断所述仿真的修正图形中,金属线条的仿真尺寸与实际尺寸之间的差别,根据该差别修改第一缩进量和第二缩进量的值。得到修正图形后,可以通过图形识别软件对仿真图形中的金属线条做尺寸标定。并将这些仿真尺寸跟实际生产所需实现的实际尺寸做比较,判断两者之间的差别。再依据该差别对第一缩进量和第二缩进量进行修改。修改时,如果仿真尺寸大于实际尺寸,则需要增加第一缩进量和第二缩进量,反之,如果仿真尺寸小于实际尺寸,则需要减少第一缩进量和第二缩进量。具体增加或减少的尺度,可以由两者之间的差别大小决定,也可以是以一个恒定最小量为每次增加或减少的步进量。
S15:最后,以所述差别为零时的第一缩进量和第二缩进量对该金属线条进行缩进,并对缩进后的金属层图形进行实际光学邻近修正。
综上所述,本发明提出的光学邻近修正方法中,通过在对金属线条进行OPC处理时,增加判断和修改缩进量的步骤,使得金属线条中的凹凸结构在进行OPC修正时能够达到最佳的缩进量,从而减少实际硅片上得到的光刻图形与掩膜版图形之间存在变形和偏差, 以提高产品的电路性能和生产成品率。
对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (6)

  1. 一种光学邻近修正方法,包括:
    提供一有多条金属线条组成的金属层图形,该金属层图形对应于包括凹凸结构的金属线条;
    将所述金属层图形上对应于所述金属线条的尺寸进行缩进处理,其中在对应于所述凹凸结构处缩进第一缩进量,非对应于所述凹凸结构处缩进第二缩进量;
    对所述金属层图形进行仿真光学邻近修正,得到仿真的修正图形;
    判断所述仿真的修正图形中金属线条的仿真尺寸与实际尺寸之间的差别;
    根据所述差别修改第一缩进量和/或第二缩进量的值;
    以调整至所述差别为零时的第一缩进量、第二缩进量对该金属层图形进行缩进。
  2. 如权利要求1所述的光学邻近修正方法,其特征在于:所述金属线条中的凹凸结构系由预定手段确定。
  3. 如权利要求1所述的光学邻近修正方法,其特征在于:所述第一缩进量大于第二缩进量。
  4. 如权利要求1所述的光学邻近修正方法,其特征在于:所述仿真光学邻近修正包括步骤:
    根据所述金属层图形的特征尺寸确定光刻工艺参数;
    根据所述光刻工艺参数确定光学邻近修正模型,建立光学邻近修正的运算程序;
    对所述缩进处理之后的金属层图形进行所述光学邻近修正的运算,得到该金属层图形的仿真修正图形。
  5. 如权利要求4所述的光学邻近修正方法,其特征在于:所述光刻工艺参数包括曝光光路的光学参数、光刻胶材料的材料参数以及刻蚀工艺的化学参数。
  6. 如权利要求1所述的光学邻近修正方法,其特征在于:在所述修改第一缩进量和/或第二缩进量的步骤中,增加仿真尺寸大于实际尺寸时的第一缩进量和/或第二缩进量,及/或减少仿真尺寸小于实际尺寸时的第一缩进量和/或第二缩进量。
PCT/CN2012/083723 2011-12-27 2012-10-30 光学邻近修正方法 Ceased WO2013097541A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110444785.8A CN103186030B (zh) 2011-12-27 2011-12-27 光学邻近修正方法
CN201110444785.8 2011-12-27

Publications (1)

Publication Number Publication Date
WO2013097541A1 true WO2013097541A1 (zh) 2013-07-04

Family

ID=48677276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/083723 Ceased WO2013097541A1 (zh) 2011-12-27 2012-10-30 光学邻近修正方法

Country Status (2)

Country Link
CN (1) CN103186030B (zh)
WO (1) WO2013097541A1 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112099309A (zh) * 2019-06-18 2020-12-18 中芯国际集成电路制造(上海)有限公司 光学邻近修正模型的校正方法
CN112241102A (zh) * 2019-07-19 2021-01-19 中芯国际集成电路制造(上海)有限公司 光学临近修正、光掩模版制作及图形化方法
CN113050365A (zh) * 2019-12-27 2021-06-29 中芯国际集成电路制造(上海)有限公司 光学邻近修正方法及系统、掩模版、设备与介质
CN113703277A (zh) * 2020-05-20 2021-11-26 中芯国际集成电路制造(上海)有限公司 图形修正方法
CN113759656A (zh) * 2020-06-01 2021-12-07 中芯国际集成电路制造(上海)有限公司 掩膜版制作方法及图形修正方法、半导体器件的形成方法
CN114334809A (zh) * 2022-03-10 2022-04-12 晶芯成(北京)科技有限公司 内连线结构的制备方法
CN115576168A (zh) * 2022-10-31 2023-01-06 上海华力微电子有限公司 Opc修正方法
CN115859896A (zh) * 2022-11-16 2023-03-28 苏州珂晶达电子有限公司 一种集成电路版图的设计良率确定方法及装置
CN116339066A (zh) * 2021-12-23 2023-06-27 中芯国际集成电路制造(天津)有限公司 光学邻近修正方法及系统、掩膜版、设备及存储介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104090317B (zh) * 2014-05-16 2016-08-17 北京理工大学 一种柱面基底衍射光学元件的制作方法
CN105807556B (zh) * 2016-06-02 2019-12-24 武汉新芯集成电路制造有限公司 版图的修正方法
US11099478B2 (en) 2018-08-14 2021-08-24 Taiwan Semiconductor Manufacturing Co., Ltd. Photomask having recessed region
CN113495426A (zh) * 2020-04-08 2021-10-12 长鑫存储技术有限公司 一种光学临近效应修正方法及装置
CN114578650B (zh) * 2020-11-30 2025-12-02 无锡华润上华科技有限公司 光学邻近效应校正方法、掩膜版及可读存储介质
CN115657417B (zh) * 2022-10-31 2025-04-29 上海华力微电子有限公司 目标版图优化方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631110A (en) * 1994-07-05 1997-05-20 Nec Corporation Process of fabricating photo-mask used for modified illumination, projection aligner using the photo-mask and method of transferring pattern image from the photo-mask to photo-sensitive layer
US20050125764A1 (en) * 2003-11-13 2005-06-09 Armin Semmler Method for producing a mask layout avoiding imaging errors for a mask
CN1797191A (zh) * 2004-12-29 2006-07-05 海力士半导体有限公司 检测光掩模数据库图案缺陷的方法
CN1278182C (zh) * 2003-02-19 2006-10-04 松下电器产业株式会社 掩模图形产生方法及掩模图形产生装置
US20070212620A1 (en) * 2006-03-09 2007-09-13 Elpida Memory, Inc. Mask data generation method and mask
CN101995763A (zh) * 2009-08-17 2011-03-30 上海宏力半导体制造有限公司 光学邻近校正方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101625521B (zh) * 2008-07-08 2011-07-13 中芯国际集成电路制造(上海)有限公司 光学邻近修正方法
CN101349863B (zh) * 2008-08-19 2010-08-25 浙江大学 用轮廓采样的多边形边动态切分的光学临近效应校正方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631110A (en) * 1994-07-05 1997-05-20 Nec Corporation Process of fabricating photo-mask used for modified illumination, projection aligner using the photo-mask and method of transferring pattern image from the photo-mask to photo-sensitive layer
CN1278182C (zh) * 2003-02-19 2006-10-04 松下电器产业株式会社 掩模图形产生方法及掩模图形产生装置
US20050125764A1 (en) * 2003-11-13 2005-06-09 Armin Semmler Method for producing a mask layout avoiding imaging errors for a mask
CN1797191A (zh) * 2004-12-29 2006-07-05 海力士半导体有限公司 检测光掩模数据库图案缺陷的方法
US20070212620A1 (en) * 2006-03-09 2007-09-13 Elpida Memory, Inc. Mask data generation method and mask
CN101995763A (zh) * 2009-08-17 2011-03-30 上海宏力半导体制造有限公司 光学邻近校正方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112099309A (zh) * 2019-06-18 2020-12-18 中芯国际集成电路制造(上海)有限公司 光学邻近修正模型的校正方法
CN112099309B (zh) * 2019-06-18 2023-10-17 中芯国际集成电路制造(上海)有限公司 光学邻近修正模型的校正方法
CN112241102A (zh) * 2019-07-19 2021-01-19 中芯国际集成电路制造(上海)有限公司 光学临近修正、光掩模版制作及图形化方法
CN113050365A (zh) * 2019-12-27 2021-06-29 中芯国际集成电路制造(上海)有限公司 光学邻近修正方法及系统、掩模版、设备与介质
CN113703277A (zh) * 2020-05-20 2021-11-26 中芯国际集成电路制造(上海)有限公司 图形修正方法
CN113759656A (zh) * 2020-06-01 2021-12-07 中芯国际集成电路制造(上海)有限公司 掩膜版制作方法及图形修正方法、半导体器件的形成方法
CN116339066A (zh) * 2021-12-23 2023-06-27 中芯国际集成电路制造(天津)有限公司 光学邻近修正方法及系统、掩膜版、设备及存储介质
CN114334809A (zh) * 2022-03-10 2022-04-12 晶芯成(北京)科技有限公司 内连线结构的制备方法
CN115576168A (zh) * 2022-10-31 2023-01-06 上海华力微电子有限公司 Opc修正方法
CN115576168B (zh) * 2022-10-31 2025-06-06 上海华力微电子有限公司 Opc修正方法
CN115859896A (zh) * 2022-11-16 2023-03-28 苏州珂晶达电子有限公司 一种集成电路版图的设计良率确定方法及装置

Also Published As

Publication number Publication date
CN103186030B (zh) 2015-07-01
CN103186030A (zh) 2013-07-03

Similar Documents

Publication Publication Date Title
WO2013097541A1 (zh) 光学邻近修正方法
WO2013082980A1 (zh) 一种光学邻近修正方法
JP4746649B2 (ja) 光近接効果補正のための多変数解法
WO2021203966A1 (zh) 光学临近效应修正方法及装置
CN103376643B (zh) 校正布局图形的方法
US10908495B2 (en) Photolithography process and photolithography apparatus
CN105573048B (zh) 一种光学临近修正模型的优化方法
US20150169820A1 (en) Weak points auto-correction process for opc tape-out
CN112824972B (zh) 目标版图和掩膜版版图的修正方法、掩膜版及半导体结构
US20140220786A1 (en) Methods for optical proximity correction in the design and fabrication of integrated circuits
CN111443567A (zh) 光学邻近修正模型、光学邻近修正方法
CN110850677A (zh) 光刻层掩膜版的制备方法、离子注入方法
US20080320435A1 (en) Optical proximity correction improvement by fracturing after pre-optical proximity correction
US6571383B1 (en) Semiconductor device fabrication using a photomask designed using modeling and empirical testing
TW201312286A (zh) 用於三維拓樸晶圓之微影模型
CN114326330B (zh) 一种光刻图形的优化方法及装置
WO2014019544A1 (zh) 一种光学临近矫正方法
CN110687746B (zh) 曝光辅助图形、掩膜版及掩模版与半导体器件的制造方法
CN115685663A (zh) 带sraf的opc修正方法
CN113219784A (zh) 获取掩膜版最优物平面方法和光学邻近修正方法及掩膜版
CN114063380A (zh) 图形修正方法及半导体结构的形成方法
CN118884777A (zh) 半导体光刻模拟方法、装置和电子设备
CN111796480A (zh) 光学邻近修正方法
KR100688893B1 (ko) 반도체 소자의 마스크 패턴 형성 방법
KR100801737B1 (ko) 반도체 소자 패턴의 광근접 효과 보정 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12862679

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12862679

Country of ref document: EP

Kind code of ref document: A1