JP6373943B2 - 単層ポリシリコン不揮発性メモリのアレイ構造体 - Google Patents
単層ポリシリコン不揮発性メモリのアレイ構造体 Download PDFInfo
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- JP6373943B2 JP6373943B2 JP2016228314A JP2016228314A JP6373943B2 JP 6373943 B2 JP6373943 B2 JP 6373943B2 JP 2016228314 A JP2016228314 A JP 2016228314A JP 2016228314 A JP2016228314 A JP 2016228314A JP 6373943 B2 JP6373943 B2 JP 6373943B2
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- 230000015654 memory Effects 0.000 title claims description 249
- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims description 59
- 229920005591 polysilicon Polymers 0.000 title claims description 59
- 239000002356 single layer Substances 0.000 title claims description 50
- 238000003860 storage Methods 0.000 description 23
- 238000010586 diagram Methods 0.000 description 21
- 102100032008 Solute carrier family 40 member 1 Human genes 0.000 description 14
- 101710111423 Solute carrier family 40 member 1 Proteins 0.000 description 14
- 239000000969 carrier Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 101100462378 Danio rerio otpb gene Proteins 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 6
- 101001106432 Homo sapiens Rod outer segment membrane protein 1 Proteins 0.000 description 5
- 102100021424 Rod outer segment membrane protein 1 Human genes 0.000 description 5
- 238000005468 ion implantation Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 101100346892 Arabidopsis thaliana MTPA1 gene Proteins 0.000 description 2
- 101100346893 Arabidopsis thaliana MTPA2 gene Proteins 0.000 description 2
- 101150069989 MTP2 gene Proteins 0.000 description 2
- 101150006417 MTP3 gene Proteins 0.000 description 2
- 101100098774 Rattus norvegicus Tap2 gene Proteins 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
- G11C16/0425—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing a merged floating gate and select transistor
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Description
ワンタイムプログラム(OTP)セルとみなすことができる。さらにまた、本発明は複数のOTPセルと複数のMTPセルとの混在モードのアレイ構造体を提供することができる。
Claims (14)
- 第1のワード線に接続されるMTPセルの第1の行と第1のソース線と第1の消去線と複数のビット線とを備える第1のMTPセクションと、
第2のワード線に接続されるMTPセルの第2の行と第2のソース線とを備える第2のMTPセクションであって、該第2のMTPセクションは前記第1の消去線と前記複数のビット線とを前記第1のMTPセクションと共有する、第2のMTPセクションと、
第3のワード線に接続されるOTPセルの第3の行を備える第1のOTPセクションであって、該第1のOTPセクションは前記第1のソース線と前記複数のビット線とを前記第1のMTPセクションと共有する、第1のOTPセクションと、を備える、単層ポリシリコン不揮発性メモリのアレイ構造体。 - 前記複数のビット線は第1のビット線と第2のビット線とを備え、前記第1のMTPセクションは第1のPMOSトランジスタと第2のPMOSトランジスタと第1のNMOSトランジスタとを備える第1のメモリセルを備え、
前記第1のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第1のPMOSトランジスタのゲート端子は前記第1のワード線に接続され、前記第1のPMOSトランジスタのドレイン端子は前記第2のPMOSトランジスタのソース端子に接続され、前記第2のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第2のPMOSトランジスタのゲート端子は前記第1のNMOSトランジスタのゲート端子に接続され、前記第1のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続され、前記第1のMTPセクションは第3のPMOSトランジスタと第4のPMOSトランジスタと第2のNMOSトランジスタとを備える第2のメモリセルを備え、
前記第3のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第3のPMOSトランジスタのゲート端子は前記第1のワード線に接続され、前記第3のPMOSトランジスタのドレイン端子は前記第4のPMOSトランジスタのソース端子に接続され、前記第4のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第4のPMOSトランジスタのゲート端子は前記第2のNMOSトランジスタのゲート端子に接続され、前記第2のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続される、請求項1に記載のアレイ構造体。 - 前記第2のMTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタと第3のNMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第2のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第2のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子は前記第3のNMOSトランジスタのゲート端子に接続され、前記第3のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続され、前記第2のMTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタと第4のNMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第2のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第2のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子は前記第4のNMOSトランジスタのゲート端子に接続され、前記第4のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続される、請求項2に記載のアレイ構造体。 - 前記第1のOTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタと第3のNMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子は前記第3のNMOSトランジスタのゲート端子に接続され、前記第3のNMOSトランジスタのドレイン端子とソース端子とはフローティング状態にあり、前記第1のOTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタと第4のNMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子は前記第4のNMOSトランジスタのゲート端子に接続され、前記第4のNMOSトランジスタのドレイン端子とソース端子とはフローティング状態にある、請求項2に記載のアレイ構造体。 - 前記第1のOTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子はフローティング状態にあり、前記第1のOTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子はフローティング状態にある、請求項2に記載のアレイ構造体。 - 第4のワード線と第3のソース線とに接続されるOTPセルの第4の行を備える第2のOTPセクションを更に備え、前記第2のOTPセクションは前記複数のビット線を前記第1のMTPセクションと前記第2のMTPセクションと前記第1のOTPセクションとで共有する、請求項2に記載のアレイ構造体。
- 前記第2のOTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタと第3のNMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子は前記第3のNMOSトランジスタのゲート端子に接続され、前記第3のNMOSトランジスタのドレイン端子とソース端子とはフローティング状態にあり、前記第2のOTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタと第4のNMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子は前記第4のNMOSトランジスタのゲート端子に接続され、前記第4のNMOSトランジスタのドレイン端子とソース端子とはフローティング状態にある、請求項6に記載のアレイ構造体。 - 前記第2のOTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子はフローティング状態にあり、前記第2のOTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子はフローティング状態にある、請求項6に記載のアレイ構造体。 - 第4のワード線と第3のソース線とに接続されるROMセルの第4の行を備える第1のROMセクションを更に備え、前記第1のROMセクションは前記複数のビット線を前記第1のMTPセクションと前記第2のMTPセクションと前記第1のOTPセクションとで共有する、請求項2に記載のアレイ構造体。
- 前記第1のROMセクションは第5のPMOSトランジスタと第6のPMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第1のROMセクションは第7のPMOSトランジスタを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第3のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第4のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第1のビット線に接続される、請求項9に記載のアレイ構造体。 - 第1のワード線と第1のソース線と第1の消去線と複数のビット線とに接続されるMTPセルの第1の行を備える、第1のMTPセクションと、
第2のワード線と第2のソース線とに接続されるMTPセルの第2の行を備える第2のMTPセクションであって、該第2のMTPセクションは前記第1の消去線と前記複数のビット線とを前記第1のMTPセクションと共有する、第2のMTPセクションと、
第3のワード線に接続されるROMセルの第3の行を備える第1のROMセクションであって、該第1のROMセクションは前記第1のソース線と前記複数のビット線とを前記第1のMTPセクションと共有する、第1のROMセクションと、
第4のワード線と第3のソース線とに接続されるROMセルの第4の行を備える第2のROMセクションであって、該第2のROMセクションは前記複数のビット線を前記第1のMTPセクションと共有する、第2のROMセクションと、を備える、単層ポリシリコン不揮発性メモリのアレイ構造体。 - 前記複数のビット線は第1のビット線と第2のビット線とを備え、前記第1のMTPセクションは第1のPMOSトランジスタと第2のPMOSトランジスタと第1のNMOSトランジスタとを備える第1のメモリセルを備え、
前記第1のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第1のPMOSトランジスタのゲート端子は前記第1のワード線に接続され、前記第1のPMOSトランジスタのドレイン端子は前記第2のPMOSトランジスタのソース端子に接続され、前記第2のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第2のPMOSトランジスタのゲート端子は前記第1のNMOSトランジスタのゲート端子に接続され、前記第1のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続され、前記第1のMTPセクションは第3のPMOSトランジスタと第4のPMOSトランジスタと第2のNMOSトランジスタとを備える第2のメモリセルを備え、
前記第3のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第3のPMOSトランジスタのゲート端子は前記第1のワード線に接続され、前記第3のPMOSトランジスタのドレイン端子は前記第4のPMOSトランジスタのソース端子に接続され、前記第4のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第4のPMOSトランジスタのゲート端子は前記第2のNMOSトランジスタのゲート端子に接続され、前記第2のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続される、請求項11に記載のアレイ構造体。 - 前記第2のMTPセクションは第5のPMOSトランジスタと第6のPMOSトランジスタと第3のNMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第2のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第2のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第6のPMOSトランジスタのゲート端子は前記第3のNMOSトランジスタのゲート端子に接続され、前記第3のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続され、前記第2のMTPセクションは第7のPMOSトランジスタと第8のPMOSトランジスタと第4のNMOSトランジスタとを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第2のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第2のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第8のPMOSトランジスタのソース端子に接続され、前記第8のPMOSトランジスタのドレイン端子は前記第2のビット線に接続され、前記第8のPMOSトランジスタのゲート端子は前記第4のNMOSトランジスタのゲート端子に接続され、前記第4のNMOSトランジスタのドレイン端子とソース端子とは前記第1の消去線に接続される、請求項12に記載のアレイ構造体。 - 前記第1のROMセクションは第5のPMOSトランジスタと第6のPMOSトランジスタとを備える第3のメモリセルを備え、
前記第5のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第5のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第5のPMOSトランジスタのドレイン端子は前記第6のPMOSトランジスタのソース端子に接続され、前記第6のPMOSトランジスタのドレイン端子は前記第1のビット線に接続され、前記第1のROMセクションは第7のPMOSトランジスタを備える第4のメモリセルを備え、
前記第7のPMOSトランジスタのソース端子は前記第1のソース線に接続され、前記第7のPMOSトランジスタのゲート端子は前記第3のワード線に接続され、前記第7のPMOSトランジスタのドレイン端子は前記第2のビット線に接続される、請求項12に記載のアレイ構造体。
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