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jean hoerni wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 biography 2 personal life 3 philanthropy 4 patents 5 references toggle the table of contents jean hoerni 11 languages العربية مصرى català deutsch español فارسی français italiano 日本語 português اردو edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia swiss born american engineer 1924 1997 dr jean amédée hoerni born 1924 09 26 september 26 1924 geneva switzerland died january 12 1997 1997 01 12 aged 72 seattle washington u s education b s m d and phd university of geneva phd university of cambridge known for invention of planar process and pnp double diffused transistor 1 spouses anne marie hoerni ruth carmona jennifer wilson scientific career fields electronic engineering semiconductor workplaces shockley fairchild amelco jean amédée hoerni september 26 1924 january 12 1997 was a swiss born american engineer he was a silicon transistor pioneer and a member of the traitorous eight he developed the planar process an important technology for reliably fabricating and manufacturing semiconductor devices such as transistors and integrated circuits biography edit hoerni was born on september 26 1924 in geneva switzerland 2 he received his b s in mathematics from the university of geneva and two ph d s in physics one from the university of geneva and the other from the university of cambridge 3 in 1952 he moved to the united states to work at the california institute of technology where he became acquainted with william shockley a physicist at bell labs who was intimately involved with the creation of the transistor a few years later shockley recruited hoerni to work with him at the newly founded shockley semiconductor laboratory division of beckman instruments in mountain view california but shockley s strange behavior compelled the so called traitorous eight hoerni julius blank victor grinich eugene kleiner jay last gordon moore robert noyce and sheldon roberts to leave his laboratory and create the fairchild semiconductor corporation in 1955 carl frosch and lincoln derrick discovered and patented surface passivation by silicon dioxide 4 5 frosch and derrick were able to manufacture the first silicon dioxide field effect transistors the first transistors in which drain and source were adjacent at the surface 6 at shockley semiconductor shockley had circulated the preprint of their article in december 1956 to all his senior staff including jean hoerni later hoerni attended a meeting where atalla presented a paper about passivation based on the previous results at bell labs 7 the planar process was invented by jean hoerni with his first patent filed in may 1959 while working at fairchild semiconductor 8 9 the planar process was critical in the invention of silicon integrated circuit by robert noyce 10 noyce built on hoerni s work with his conception of an integrated circuit which added a layer of metal to the top of hoerni s basic structure to connect different components such as transistors capacitors or resistors located on the same piece of silicon the planar process provided a powerful way of implementing an integrated circuit that was superior to earlier conceptions of the device 11 with noyce jack kilby from texas instruments is usually credited with the invention of the integrated circuit but kilby s ic was based on germanium along with the traitorous eight alumni jay last and sheldon roberts hoerni founded amelco known now as teledyne in 1961 in 1964 he founded union carbide electronics and in 1967 he founded intersil where he became a pioneer of low voltage cmos integrated circuits he was awarded the edward longstreth medal from the franklin institute in 1969 12 and the mcdowell award in 1972 2 hoerni died of myelofibrosis on january 12 1997 in seattle washington 13 14 he was 72 personal life edit he was married to anne marie hoerni and had three children annie blackwell susan killham and michael hoerni he had one brother marc hoerni 14 his second marriage to ruth carmona also ended in divorce 15 hoerni married jennifer wilson in 1993 philanthropy edit an avid mountain climber hoerni often visited the karakoram mountains in pakistan and was moved by the poverty of the balti mountain people who lived there he contributed 12 000 to greg mortenson s project to build a school in the remote village of korphe and later founded the central asia institute with an endowment of 1 million to continue providing services for them after his death 16 17 hoerni named greg mortenson as the first executive director of the organization which continues to build schools in pakistan and afghanistan 18 in december 2007 an article was published by michael riordan on hoerni and his planar process in ieee spectrum the author claimed that jay last pointed out that hoerni had incredible stamina and could hike for hours on little food or water 13 patents edit 1962 u s patent 3 025 589 a method of manufacturing semiconductor devices assigned to fairchild camera and instrument corp 1962 u s patent 3 064 167 a semiconductor device assigned to fairchild camera and instrument corp 1963 u s patent 3 108 914 a transistor manufacturing process assigned to fairchild camera and instrument corp references edit jean a hoerni ieee computer society 29 march 2018 1 2 jean a hoerni 1972 w wallace mcdowell award recipient archived from the original on 2012 10 11 retrieved 2011 03 07 brock david c 2006 understanding moore s law four decades of innovation pittsford new york castle rock p 15 isbn 0941901416 huff howard riordan michael 2007 09 01 frosch and derick fifty years later foreword the electrochemical society interface 16 3 29 doi 10 1149 2 f02073if issn 1064 8208 us2802760a lincoln derick frosch carl j oxidation of semiconductive surfaces for controlled diffusion issued 1957 08 13 frosch c j derick l 1957 surface protection and selective masking during diffusion in silicon journal of the electrochemical society 104 9 547 doi 10 1149 1 2428650 lojek bo 2007 history of semiconductor engineering springer science business media p 120 isbn 9783540342588 us 3025589 hoerni j a method of manufacturing semiconductor devices filed may 1 1959 us 3064167 hoerni j a semiconductor device filed may 15 1960 moore gordon e summer 1994 the accidental entrepreneur pdf engineering science caltech retrieved march 16 2025 bassett ross knox 2007 to the digital age research labs start up companies and the rise of mos technology johns hopkins university press p 46 isbn 9780801886393 franklin laureate database edward longstreth medal 1969 laureates franklin institute retrieved november 16 2011 cite web cs1 maint deprecated archival service link 1 2 michael riordan december 2007 the silicon dioxide solution how physicist jean hoerni built the bridge from the transistor to the integrated circuit ieee spectrum ieee retrieved november 27 2012 cite web cs1 maint deprecated archival service link 1 2 jean a hoerni sfgate com february 5 1997 retrieved november 27 2012 howell victoria plum loco owner finds her niche archives bitterrootstar com archived from the original on 2012 12 03 retrieved 2016 12 13 three cups of tea chapter 5 disk 2 tracks 16 18 of the audiobook version a gift for an entire village a failed mountaineer becomes a philanthropist after a village without a school saves his life archived 2008 04 05 at the wayback machine marilyn gardner christian science monitor september 12 2006 central asia institute history archived 2014 12 24 at the wayback machine central asia institute authority control databases international isni viaf fast worldcat national united states academics mathematics genealogy project scopus zbmath other snac retrieved from https en wikipedia org w index php title jean_hoerni oldid 1376967032 categories 1924 births 1997 deaths swiss emigrants to the united states silicon valley people american businesspeople in the computer industry american mountain climbers 20th century american businesspeople swiss expatriates in england scientists at shockley semiconductor laboratory businesspeople from geneva fairchild semiconductor people hidden categories articles with short description short description is different from wikidata articles with hcards cs1 maint deprecated archival service webarchive template wayback links this page was last edited on 27 september 2026 at 04 38 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents jean hoerni 11 languages add topic