Xi'an Institute of Optics and Precision Mechanics,CAS
Production of semiconductor element | |
其他题名 | Production of semiconductor element |
KANEKO TADAO; SASAKI YOSHIMITSU; SAITO KATSUTOSHI | |
1992-04-28 | |
专利权人 | HITACHI LTD |
公开日期 | 1992-04-28 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To obtain a mask for dry etching having excellent perpendicularity by subjecting upper resist patterns of a three-layered structure to a high temp. heating treatment after the formation thereof, thereby erasing striation and the laminated cross stripes by the influence of standing waves. CONSTITUTION:A 1st layer photoresist layer 2 is formed on an InP semiconduc tor substrate 1 and is then spin coated with a soln. mixed with orthotitanic acid and is heat treated, by which an intermediate layer 3 is formed. The upper layer photoresist film is therafter formed and is exposed by a reduction stepper to form patterns 4. The striation 5 and the laminated cross stripes 6 generated by the influence of the standing waves are erased by executing the heating treatment for 20 minutes at 170 deg.C. The intermediate layer 3 and the lower layer resist 2 are dry etched in this way, by which the mask for sharp dry etching which is free from the striation at the pattern edges is obtd. |
其他摘要 | 用途:通过使三层结构的上部抗蚀剂图案经受高温,获得具有优异垂直度的干蚀刻用掩模。在其形成之后进行加热处理,从而通过驻波的影响消除条纹和层叠的交叉条纹。组成:在InP半导体衬底1上形成第一层光致抗蚀剂层2,然后旋涂有溶胶。与原钛酸混合并进行热处理,由此形成中间层3。上层光致抗蚀剂膜在后形成并通过还原步进器曝光以形成图案4.通过在170度下进行20分钟的加热处理,擦除由驻波影响产生的条纹5和层叠交叉条纹6。。C。以这种方式干法蚀刻中间层3和下层抗蚀剂2,由此可以看到在图案边缘处没有条纹的用于急剧干蚀刻的掩模。 |
主权项 | - |
申请日期 | 1990-09-19 |
专利号 | JP1992127157A |
专利状态 | 失效 |
申请号 | JP1990247132 |
公开(公告)号 | JP1992127157A |
IPC 分类号 | G03F7/26 | G03F7/38 | H01L21/302 | H01L21/3065 | H01S5/00 | H01S3/18 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/64310 |
专题 | 半导体激光器专利数据库 |
作者单位 | HITACHI LTD |
推荐引用方式 GB/T 7714 | KANEKO TADAO,SASAKI YOSHIMITSU,SAITO KATSUTOSHI. Production of semiconductor element. JP1992127157A[P]. 1992-04-28. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JP1992127157A.PDF(100KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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