JP7403544B2 - 受光センサ、アレイ基板及び電子機器 - Google Patents
受光センサ、アレイ基板及び電子機器 Download PDFInfo
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- JP7403544B2 JP7403544B2 JP2021534390A JP2021534390A JP7403544B2 JP 7403544 B2 JP7403544 B2 JP 7403544B2 JP 2021534390 A JP2021534390 A JP 2021534390A JP 2021534390 A JP2021534390 A JP 2021534390A JP 7403544 B2 JP7403544 B2 JP 7403544B2
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- 239000000758 substrate Substances 0.000 claims description 77
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- 238000000034 method Methods 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
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- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
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- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
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- H01L31/112—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor
- H01L31/113—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor being of the conductor-insulator-semiconductor type, e.g. metal-insulator-semiconductor field-effect transistor
- H01L31/1136—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor being of the conductor-insulator-semiconductor type, e.g. metal-insulator-semiconductor field-effect transistor the device being a metal-insulator-semiconductor field-effect transistor
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Description
第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含む受光センサを提供している。
制御素子を含む基板と、
第2ドレインが前記制御素子に接続される前記受光センサと、を含むアレイ基板を提供している。
前記平坦化層19に設けられ、第2ゲート211及び第1金属部212を含む第3金属層21であって、前記第3金属層21の材料が第2金属層18の材料と同じであってもよい第3金属層21と、
前記第3金属層21に設けられ、材料が窒化ケイ素、酸化ケイ素及び有機フォトレジストの少なくとも1種を含むことができる第2絶縁層22と、
前記第2絶縁層22に設けられる第2半導体層23であって、前記第2半導体層23の両端に位置する導電部231を含み、図1及び図2に示すように、前記第2半導体層23の所定平面における正射影が、前記第2ゲート211の前記所定平面における正射影と部分的に重なり、所定平面が水平面であり、つまり、下から上へ第2ゲート211が前記第2半導体層23の一部を被覆し、好ましい実施形態において、前記第2半導体層23の材料がアモルファスシリコンであってもよく、第1半導体層14の材料が多結晶シリコンであり、アモルファスシリコンが厚く作製することができるので、光の吸収に有利であり、高性能の受光センサを容易に形成するので、指紋認識の精度を向上させ、開口率をさらに向上させるために、一実施形態において、前記第2半導体層23が前記第1半導体部141を被覆することができる第2半導体層23と、
前記第2半導体層23に設けられ、第2ソース241及び第2ドレイン242を含み、前記第2ドレイン242が前記制御素子T1に接続され、具体的に制御素子T1のドレイン(即ち第1ドレイン182)に接続され、一実施形態において、インピーダンスを低下させるために、前記第2ドレイン242が前記第1金属部212を介して前記第1ドレイン182に接続されてもよく、好ましい実施形態において、前記第2ソース241が前記第2ゲート211の一部を被覆することができる第4金属層24と、を含む受光センサSを提供している。
前記第2ドレイン242の設定端部53の形状が弧状となり、前記第2サブ接続部52の形状が前記第2ドレイン242の設定端部の形状とマッチングし、前記設定端部が前記第2ソース241に近い側の端部である。
前記第2ドレイン242が第2共通端子64、第2幹部65及び複数の第2枝部66を含み、前記第2幹部65が前記第2共通端子64及び前記第2枝部66の一端にそれぞれ接続され、前記第2共通端子64及び前記第2枝部66がいずれも第1方向に沿って配列され、前記第2幹部65が第2方向に沿って配列され、前記第1枝部63と前記第2枝部66とが交互に設けられ、
前記第2ゲート211が前記第2幹部65、前記第2枝部66及び前記第2共通端子64の一部を覆う。一実施形態において、第2ゲート211の形状と第2ドレイン242の形状とがマッチングし、第2ゲート211が第3幹部及び複数の第3枝部を含むことができ、第3枝部の一端が前記第3幹部に接続される。
前記第2絶縁層22に設けられ、第2タッチ電極31を含み、前記第1タッチ電極213の位置が前記第2タッチ電極31の位置に対応する第1導電層30を含むことができる。一実施形態において、前記第1タッチ電極213と前記第2タッチ電極31とがいずれもメッシュ状であり、前記第2タッチ電極31が前記第1タッチ電極213と接続される。なお、第1タッチ電極213と第2タッチ電極31との構造はこれに限定されるものではない。一実施形態において、第1導電層30の材料が酸化インジウムスズを含むが、これに限定されない。
例えば、露光エッチング等の方法により、遮光層12が第1半導体部141を遮蔽するように、遮光層12をパターニングする。
例えば、第1半導体層14の材料が多結晶シリコンであり、第1半導体層14を露光し、エッチングして、第1半導体部141及び第2半導体部142をそれぞれ形成するとともに、第1半導体部141及び第2半導体部142をPイオンでドープされてN+を形成して、第1半導体部141及び第2半導体部142を容易にオーミック接触させる。
例えば、第1金属層16をパターニングして第1ゲート161及び第3ゲート162を形成する。その後セルフアラインプロセスを用いて第1半導体部141及び第2半導体部142にN-イオン注入を行う。
例えば、一実施形態において、ゲート絶縁層17がSiNx/SiOxの積層構造であってもよく、一実施形態において、ラピッドサーマルアニールを用いて水素化及び活性化を行い、その後該ゲート絶縁層17を露光しエッチングして、ソース及びドレインの接続孔を形成し、該接続孔が第1半導体部141又は第2半導体部142に接続される。
例えば、第2金属層18をパターニングして第1ソース181及び第1ドレイン182、第3ドレイン183及び第3ソース184を形成する。
例えば、平坦化層に接続孔が設けられ、第1金属部212が該接続孔を介して第1ドレイン182に接続される。
例えば、前記第3金属層21をパターニングして第2ゲート211、第1金属部212及び第1タッチ電極213を形成する。
第2半導体層23の材料がa-Siであり、表面処理してN+-a-Siを形成し、その後パターン加工する。
例えば、第3絶縁層25に接続孔が設けられ、該接続孔が画素電極41及び第3ドレイン183を接続する。
いくつかの実施例において、筐体90がプラスチックゴム筐体又はシリカゲル筐体などの可撓性材料で製造される。
Claims (13)
- 第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含み、
前記第2ドレインの前記所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と重ならない場合、前記第2ソースが前記第2ゲートの一部を覆い、又は、前記第2ソースの前記所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と重ならない場合、前記第2ドレインが前記第2ゲートの一部を覆う、
受光センサ。 - 前記第2ゲートが前記第2ソースに接続される、
請求項1に記載の受光センサ。 - 第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含み、
前記第2ソースが第1サブ接続部及び第2サブ接続部を含み、前記第2サブ接続部の形状が弧状であり、前記第1サブ接続部の一端が前記第2サブ接続部に接続され、
前記第2ドレインの設定端部の形状が弧状となり、前記第2サブ接続部の形状が前記第2ドレインの設定端部の形状とマッチングし、前記設定端部が前記第2ソースに近い側の端部であり、
前記第2ゲートの設定端部の形状も弧状となり、前記第2ゲートの基板における正射影の面積が、前記第2ドレインの前記基板における正射影の面積よりも大きく、前記第2サブ接続部が前記第2ゲートの設定端部の外に覆われる、
受光センサ。 - 第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含み、
前記第2ソースが第1共通端子、第1幹部及び複数の第1枝部を含み、前記第1幹部が前記第1共通端子及び前記第1枝部の一端にそれぞれ接続され、前記第1共通端子及び前記第1枝部がいずれも第1方向に沿って配列され、前記第1幹部が第2方向に沿って配列され、
前記第2ドレインが第2共通端子、第2幹部及び複数の第2枝部を含み、前記第2幹部が前記第2共通端子及び前記第2枝部の一端にそれぞれ接続され、前記第2共通端子及び前記第2枝部がいずれも前記第1方向に沿って配列され、前記第2幹部が前記第2方向に沿って配列され、前記第1枝部と前記第2枝部とが交互に設けられ、
前記第2ゲートが前記第2幹部、前記第2枝部及び前記第2共通端子の一部を覆い、前記第1方向が前記第2方向と交差する、
受光センサ。 - 制御素子を含む基板と、
受光センサであって、
第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含む受光センサと、を含み、
前記受光センサの第2ドレインが前記制御素子に接続され、
前記第2ドレインの前記所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と重ならない場合、前記第2ソースが前記第2ゲートの一部を覆い、又は、前記第2ソースの前記所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と重ならない場合、前記第2ドレインが前記第2ゲートの一部を覆う、
アレイ基板。 - 前記制御素子が第1ドレインを含み、
前記第3金属層が第1金属部をさらに含み、前記第2ドレインが前記第1金属部を介して前記第1ドレインに接続される、
請求項5に記載のアレイ基板。 - 前記第2半導体層が前記制御素子の半導体層を覆う、
請求項5に記載のアレイ基板。 - 前記制御素子の半導体層の材料が多結晶シリコンであり、前記第2半導体層の材料がアモルファスシリコンである、
請求項5に記載のアレイ基板。 - 制御素子を含む基板と、
受光センサであって、
第2ゲートを含む第3金属層と、
前記第3金属層に設けられる第2絶縁層と、
前記第2絶縁層に設けられる第2半導体層であって、前記第2半導体層の両端に位置する導電部を含み、前記第2半導体層の所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と部分的に重なる第2半導体層と、
前記第2半導体層に設けられ、第2ソース及び第2ドレインを含む第4金属層と、を含む受光センサと、を含むアレイ基板であって、
前記受光センサの第2ドレインが前記制御素子に接続され、
前記第3金属層が第1タッチ電極をさらに含み、
前記アレイ基板は、
前記第2絶縁層に設けられ、第2タッチ電極を含み、前記第2タッチ電極の位置が前記第1タッチ電極の位置に対応する第1導電層をさらに含む、
アレイ基板。 - 前記基板はスイッチング素子をさらに含み、
前記アレイ基板は、
前記第1導電層に設けられ、画素電極を含み、前記画素電極が前記スイッチング素子のドレインに接続される第2導電層をさらに含む、
請求項9に記載のアレイ基板。 - 前記第1導電層は第1電極板をさらに含み、
前記第2導電層は第2電極板をさらに含み、前記第1電極板の位置が前記第2電極板の位置に対応する、
請求項10に記載のアレイ基板。 - 前記第2ドレインの前記所定平面における正射影が、前記第2ゲートの前記所定平面における正射影と重ならない場合、前記第2ゲートが前記第2ソースに接続される、
請求項5に記載のアレイ基板。 - 請求項5~12のいずれか1項に記載のアレイ基板を含む電子機器。
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