[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-665560-105":59,"doc-detail-665560-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","stick-diagrams-layer-information-and-nmoscmos-design-basics","Stick diagrams - layer information and NMOS/CMOS design basics","","Stick diagrams are introduced as symbolic drawings used to convey layer information and chip layout topology, using a color code for NMOS processes (n-diffusion, poly silicon, metal, implant, contacts). The material explains how the designer interprets crossings—poly silicon over n-diffusion to form transistors, and metal joining diffusion or poly silicon to create contacts—while noting that stick diagrams are not exact mask models. It also covers NMOS layout steps (VDD/GND rails, thin oxide paths, pull-up and pull-down structures, pass transistor signal routing) and discusses design-rule approaches using micron rules, lambda-based scaling, and layout-dimensioning concepts, plus contact-cut methods and their role in inter-layer connections.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/stick-diagrams-layer-information-and-nmoscmos-design-basics/665560/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/stick-diagrams-layer-information-and-nmoscmos-design-basics/665560.png","ImageObject",300,407,{"name":92,"@type":93},"lugxt","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of stick diagrams in VLSI design?","Question",{"text":112,"@type":113},"Stick diagrams convey layer information and topology using colored or monochrome symbolic conventions. They translate readily into mask layout form during design.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are transistors and contacts represented in stick diagrams for NMOS?",{"text":117,"@type":113},"A transistor is formed where poly silicon crosses n-diffusion. Contacts are formed where metal wires join diffusion or poly silicon.",{"name":119,"@type":110,"acceptedAnswer":120},"What design rule approaches are discussed for layout and scaling?",{"text":121,"@type":113},"The text describes micron design rules using minimum feature sizes, lambda (λ) based rules using a single scaling parameter, and layout (λ) based rules where paths are dimensioned in λ units and scaled to fabrication capabilities.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},665560,1793304969,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":143},3985747862600,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","ROHINI COLLEGE OF ENGINEERING & TECHNOLOGY  \nStick diagrams:  \nStick diagrams are used to convey layer information through the use of a colour  \ncode for example in NMOS design.  \n􀁸 Green for n-diffusion  \n􀁸 Red for poly silicon  \n􀁸 Blue for metal  \n􀁸 Yellow for implant  \n􀁸 Black for contact areas  \n􀁸 The designer can draw a layout using coloured lines to represent the various process layers such as diffusion, metal and poly silicon.  \n􀁸 Where poly silicon crosses the diffusion, transistors are created and where metal wires join diffusion or poly silicon, contacts are formed.  \n􀁸 A stick diagram is a cartoon of a chip layout. They are not the exact models of layout.  \n􀁸 The stick diagram represents the rectangles with lines which represents wires are component symbols.  \n􀁸 The colour cooling has been complemented by monochrome encoding of the lies so the black and white copies of stick diagrams do not lose the layerinformation.  \n􀁸 The colour and monochrome encoding scheme used has been evolved to cover NMOS and CMOS processes.  \n􀁸 To illustrate the stick diagram inverter circuits are presented below in NMOS, and in P well CMOS technology.  \n􀁸 The stick diagram represents the rectangles with lines which represents wires are component symbols.  \n􀁸 The colour cooling has been complemented by monochrome encoding of the lies so the black and white copies of stick diagrams do not lose the layerinformation.  \n􀁸 The stick diagram represents the rectangles with lines which represents wires are component symbols.  \n􀁸 The colour cooling has been complemented by monochrome  \n􀁸 The stick diagram represents the rectangles with lines which represents wires are component symbols.  \n􀁸 The colour cooling has been complemented by monochrome encoding of the lies so the black and white copies of stick diagrams do not lose the layer information.  \n􀁸 The colour and monochrome encoding scheme used has been evolved to cover NMOS and CMOS processes.  \n􀁸 To illustrate the stick diagram inverter circuits are presented below in NMOS, and in P well CMOS technology.  \nFigure 1.2.1 : Stick diagrams  \n[Source: Wayne Wolf,―Modern VLSI Design: System On Chip ….]  \n􀁸 Having conveyed layer information and topology by using stick or symbolic diagrams. These diagrams relatively easily turned into mask layouts.  \n􀁸 The below diagram stressing the ready translation into mask layout form. In order that the mask layout produced during design will be compactible with the fabrication process.  \nAser of design rules are set out for layouts.  \nStick diagram using NMOS Deisgn:  \nWe consider single metal, single poly silica NMOS technology. The layout of NMOS involves.  \n􀁸 N-diffusion and other thin oxide regions-green  \n􀁸 Polysilicon  \n􀁸 Metal  \n􀁸 Impant  \n􀁸 Contacts  \n-red  \n-blue  \n-yellow  \n-black or brown  \nA transistor is formed wherever poly silicon crosses n-diffusion and all  \ndiffusion wires are n-type. The various steps involved in the design  \nstyle are.  \nStep1: Draw the metal VDD and GND rails in parallel allowing enough  \nspace between them for the other circuit element which will be  \nrequired.  \nStep 2: Draw the thinox paths between the rails for inverters and  \ninverter based logic.  \nStep 3: Draw the pull up structure which comprises a depletion mode  \ntransistor interconnected between the output point and VDD.  \nStep 4:Draw the pull down structure comprising an enhancement mode  \nstructure interconnected between the output point and GNO.  \nStep 5: Signal paths may be switched by pass transistor, and along  \nsignal paths often require metal buses.  \nDesign Rules and layout:  \nThe design rules primarily address two issue  \n1) The geometrical reproduction of features that can be reproduced by the mask-making and lithographical process.  \n2) The interactions between different layers. There are several approaches that can be taken in describing the design rules. These  \ninclude  \n􀁸 Micron design rules:  \n- Stated at some micron resolution  \n- Usually given as","cbCaijKPigpU7koJ","https://ap.wps.com/l/cbCaijKPigpU7koJ","pdf",347066,"English","# Stick diagrams\n## Colour and monochrome encoding for layer information\n## NMOS stick diagram inverter circuits\n## NMOS design steps and style\n## Design rules: micron, lambda, and layout-dimensioning\n## Contact cuts and inter-layer connections","[{\"question\":\"What is the purpose of stick diagrams in VLSI design?\",\"answer\":\"Stick diagrams convey layer information and topology using colored or monochrome symbolic conventions. They translate readily into mask layout form during design.\"},{\"question\":\"How are transistors and contacts represented in stick diagrams for NMOS?\",\"answer\":\"A transistor is formed where poly silicon crosses n-diffusion. Contacts are formed where metal wires join diffusion or poly silicon.\"},{\"question\":\"What design rule approaches are discussed for layout and scaling?\",\"answer\":\"The text describes micron design rules using minimum feature sizes, lambda (λ) based rules using a single scaling parameter, and layout (λ) based rules where paths are dimensioned in λ units and scaled to fabrication capabilities.\"}]","Stick diagrams - layer information and NMOS/CMOS design basics | PDF",13]