tag:blogger.com,1999:blog-19092890.post622239647813724960..comments2024-03-28T15:26:27.432+02:00Comments on Image Sensors World: Senseeker Introduces Oxygen DROIC Quarter WafersVladimir Koifmanhttp://www.blogger.com/profile/01800020176563544699noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-19092890.post-60205930500701057822020-09-05T21:02:49.123+03:002020-09-05T21:02:49.123+03:00Thanks Simon, well... I should have googled before...Thanks Simon, well... I should have googled before asking here ;-) it seems that 'direct injection' does refer to the kathode of the photodiode in the PDA being connected to the ROIC like in the schematic here: https://www.researchgate.net/figure/fig3_266734109. of course you find a lot of interesting infos once you start searching. also for example about bolometers, where resistors are connected to the ROIC: https://www.researchgate.net/figure/Electrical-schematic-of-the-FPA-and-ROIC_fig4_46133365<br /><br />i was using cmos sensors a bit (not an expert at all, just a user), find it interesting how other types of sensors work. I never thought how this layered mct or ingaas sensors worked internally...<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-25012573389403437272020-09-05T19:51:54.408+03:002020-09-05T19:51:54.408+03:00I think you are mistaking PDA (InGaAs photodiodes ...I think you are mistaking PDA (InGaAs photodiodes for example) with FPA (PDA+ROIC). Most of InGaAs is done with Indium micro-bumps. It becomes complicated (i.e. low yield, etc) below 10-15µm. People like Sony are using copper for the hybridization. Other people uses other material and techniques, but I cannot tell you more here :D <br />It is not that complicated to make PDA with a pitch below 10µm. 8µm is definitely doable. I went to 7.5 myself. With some work and the good tools, 5µm is "not so hard".<br />Yes, it is mainly the photodiodes on the PDA side.Simon Ferréhttps://www.blogger.com/profile/05539791390388534959noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-7741433535561230482020-09-04T23:00:17.561+03:002020-09-04T23:00:17.561+03:00thinking of it again... are there only the photodi...thinking of it again... are there only the photodiodes in the FPA layer? so one one side there might be a global ground for all photodiodes and the interface to the ROIC in each pixel is then the kathode of the photodiode. Is this correct?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-62549889503261398872020-09-04T15:23:49.752+03:002020-09-04T15:23:49.752+03:00No, i wasnt thinking about sony, im just curious i...No, i wasnt thinking about sony, im just curious in general... what is the interface of such a roic to the photodiode layer?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-48182666379933311522020-09-04T14:54:03.487+03:002020-09-04T14:54:03.487+03:00You mean like Sony 5µm ROIC for InGaAs ? ;)You mean like Sony 5µm ROIC for InGaAs ? ;)Simon Ferréhttps://www.blogger.com/profile/05539791390388534959noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-13546261605182107762020-09-04T07:51:26.860+03:002020-09-04T07:51:26.860+03:00The intention is that a producer of compound semic...The intention is that a producer of compound semiconductor FPA like MCT or Ingaas bonds the FPA on top of the ROIC, right? What is the interface on top of the ROIC in terms of electrical contact? Is there a pad with 8u pitch for every pixel? Is there a electrical "standard" for the signal of a FPA pixel? I suppose 8u is no longer possible with microbumps, so I suppose the connection has to be done with hybrid bonding, right? Are there companies out there that are yet capable to produce a FPA that works with a 8u ROIC?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-8463532326742269142020-09-03T20:58:05.794+03:002020-09-03T20:58:05.794+03:00Senseeker offer full service including delivery!Senseeker offer full service including delivery!Anonymoushttps://www.blogger.com/profile/13965931606876448864noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-4651155890922092602020-09-03T18:23:45.680+03:002020-09-03T18:23:45.680+03:00Takeout or delivery? Takeout or delivery? Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-90762815270751873172020-09-03T01:34:39.585+03:002020-09-03T01:34:39.585+03:00Just like a pizza, you can now purchase DROIC wafe...Just like a pizza, you can now purchase DROIC wafers by the slice! 😁Anonymoushttps://www.blogger.com/profile/13965931606876448864noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-26677792152798228872020-08-31T15:39:14.137+03:002020-08-31T15:39:14.137+03:00PizzaHurt business model?PizzaHurt business model?Anonymousnoreply@blogger.com