A Low Power and IR Drop Compensable AMOLED Pixel Circuit Based on Low-Temperature Poly-Si and Oxide (LTPO) TFTs Hybrid Technology
In this paper, an AMOLED pixel circuit based on low-temperature poly-crystalline silicon and oxide (LTPO) thin-film transistors (TFTs) hybrid technology is proposed, which features only two transistors in a serial connection with OLED. The power supply can thus be reduced by 25{\sim }30 % in the &q...
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| Veröffentlicht in: | IEEE journal of the Electron Devices Society 2022, Vol.10, p.51-58 |
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| creator | Qiu, Hezi An, Junjun Wang, Kun Liao, Congwei Dai, Chao Zhang, Xin Zhang, Shengdong |
| description | In this paper, an AMOLED pixel circuit based on low-temperature poly-crystalline silicon and oxide (LTPO) thin-film transistors (TFTs) hybrid technology is proposed, which features only two transistors in a serial connection with OLED. The power supply can thus be reduced by 25{\sim }30 % in the "Always-on-Display" (AOD) mode compared with the earlier LTPO pixel circuits which usually have three transistors in the current path and need a higher supply voltage. Furthermore, in addition to a strong suppressing ability to \text{V}_{\mathrm{ th}} variations/shift, the proposed pixel circuit has an excellent compensation ability for current-resistance voltage drops (i.e., IR drop), which is also superior to the earlier LTPO ones where the IR drop has to be compensated externally. Therefore, the proposed LTPO pixel circuit is able to provide AMOLED displays with lower power consumption and higher display performance than the earlier ones. |
| doi_str_mv | 10.1109/JEDS.2021.3132693 |
| format | Article |
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The power supply can thus be reduced by <inline-formula> <tex-math notation="LaTeX">25{\sim }30 </tex-math></inline-formula>% in the "Always-on-Display" (AOD) mode compared with the earlier LTPO pixel circuits which usually have three transistors in the current path and need a higher supply voltage. Furthermore, in addition to a strong suppressing ability to <inline-formula> <tex-math notation="LaTeX">\text{V}_{\mathrm{ th}} </tex-math></inline-formula> variations/shift, the proposed pixel circuit has an excellent compensation ability for current-resistance voltage drops (i.e., IR drop), which is also superior to the earlier LTPO ones where the IR drop has to be compensated externally. Therefore, the proposed LTPO pixel circuit is able to provide AMOLED displays with lower power consumption and higher display performance than the earlier ones.]]></description><identifier>ISSN: 2168-6734</identifier><identifier>EISSN: 2168-6734</identifier><identifier>DOI: 10.1109/JEDS.2021.3132693</identifier><identifier>CODEN: IJEDAC</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Active matrix displays ; Active matrix organic light emitting diodes ; always on display ; AMOLED ; Capacitors ; Circuits ; Couplings ; display ; Electric potential ; in-pixel compensation ; IR drop ; low power ; Low temperature ; LTPO ; Pixels ; Power consumption ; Power demand ; Semiconductor devices ; Silicon ; Thin film transistors ; Transistors ; Voltage ; Voltage drop</subject><ispartof>IEEE journal of the Electron Devices Society, 2022, Vol.10, p.51-58</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2022</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c332t-19f595ba8b3c003ee539c405cebd50112a473e834cd74a6b2b7a21d0ff00c8433</citedby><cites>FETCH-LOGICAL-c332t-19f595ba8b3c003ee539c405cebd50112a473e834cd74a6b2b7a21d0ff00c8433</cites><orcidid>0000-0002-5306-0926 ; 0000-0002-1815-8661 ; 0000-0002-1726-880X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9637489$$EHTML$$P50$$Gieee$$Hfree_for_read</linktohtml><link.rule.ids>315,781,785,865,2103,4025,27637,27927,27928,27929,54937</link.rule.ids></links><search><creatorcontrib>Qiu, Hezi</creatorcontrib><creatorcontrib>An, Junjun</creatorcontrib><creatorcontrib>Wang, Kun</creatorcontrib><creatorcontrib>Liao, Congwei</creatorcontrib><creatorcontrib>Dai, Chao</creatorcontrib><creatorcontrib>Zhang, Xin</creatorcontrib><creatorcontrib>Zhang, Shengdong</creatorcontrib><title>A Low Power and IR Drop Compensable AMOLED Pixel Circuit Based on Low-Temperature Poly-Si and Oxide (LTPO) TFTs Hybrid Technology</title><title>IEEE journal of the Electron Devices Society</title><addtitle>JEDS</addtitle><description><![CDATA[In this paper, an AMOLED pixel circuit based on low-temperature poly-crystalline silicon and oxide (LTPO) thin-film transistors (TFTs) hybrid technology is proposed, which features only two transistors in a serial connection with OLED. The power supply can thus be reduced by <inline-formula> <tex-math notation="LaTeX">25{\sim }30 </tex-math></inline-formula>% in the "Always-on-Display" (AOD) mode compared with the earlier LTPO pixel circuits which usually have three transistors in the current path and need a higher supply voltage. Furthermore, in addition to a strong suppressing ability to <inline-formula> <tex-math notation="LaTeX">\text{V}_{\mathrm{ th}} </tex-math></inline-formula> variations/shift, the proposed pixel circuit has an excellent compensation ability for current-resistance voltage drops (i.e., IR drop), which is also superior to the earlier LTPO ones where the IR drop has to be compensated externally. Therefore, the proposed LTPO pixel circuit is able to provide AMOLED displays with lower power consumption and higher display performance than the earlier ones.]]></description><subject>Active matrix displays</subject><subject>Active matrix organic light emitting diodes</subject><subject>always on display</subject><subject>AMOLED</subject><subject>Capacitors</subject><subject>Circuits</subject><subject>Couplings</subject><subject>display</subject><subject>Electric potential</subject><subject>in-pixel compensation</subject><subject>IR drop</subject><subject>low power</subject><subject>Low temperature</subject><subject>LTPO</subject><subject>Pixels</subject><subject>Power consumption</subject><subject>Power demand</subject><subject>Semiconductor devices</subject><subject>Silicon</subject><subject>Thin film transistors</subject><subject>Transistors</subject><subject>Voltage</subject><subject>Voltage drop</subject><issn>2168-6734</issn><issn>2168-6734</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><sourceid>RIE</sourceid><sourceid>DOA</sourceid><recordid>eNpNkU9rGzEQxZfSQkOaD1B6EfTSHtbRv9VKR8d2EoctNs32LLTSbCqzWTnSGsfHfPOu4xA6lxmG934z8LLsK8ETQrC6vFvM7ycUUzJhhFGh2IfsjBIhc1Ey_vG_-XN2kdIGjyWJUEKcZS9TVIU9Woc9RGR6h5a_0TyGLZqFxy30yTQdoOmvVbWYo7V_hg7NfLQ7P6Ark8Ch0B_9eQ2jOpphF2FkdYf83r_SVs_eAfpR1evVT1Rf1wndHproHarB_u1DFx4OX7JPrekSXLz18-zP9aKe3ebV6mY5m1a5ZYwOOVFtoYrGyIZZjBlAwZTluLDQuAITQg0vGUjGrSu5EQ1tSkOJw22LsZWcsfNseeK6YDZ6G_2jiQcdjNevixAftImDtx1oUXLeUimdAs6lbBsMwjnMuTKiMLgYWd9PrG0MTztIg96EXezH9zUVVBHKeYlHFTmpbAwpRWjfrxKsj8HpY3D6GJx-C270fDt5PAC865VgJZeK_QPDfpCo</recordid><startdate>2022</startdate><enddate>2022</enddate><creator>Qiu, Hezi</creator><creator>An, Junjun</creator><creator>Wang, Kun</creator><creator>Liao, Congwei</creator><creator>Dai, Chao</creator><creator>Zhang, Xin</creator><creator>Zhang, Shengdong</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>ESBDL</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-5306-0926</orcidid><orcidid>https://orcid.org/0000-0002-1815-8661</orcidid><orcidid>https://orcid.org/0000-0002-1726-880X</orcidid></search><sort><creationdate>2022</creationdate><title>A Low Power and IR Drop Compensable AMOLED Pixel Circuit Based on Low-Temperature Poly-Si and Oxide (LTPO) TFTs Hybrid Technology</title><author>Qiu, Hezi ; An, Junjun ; Wang, Kun ; Liao, Congwei ; Dai, Chao ; Zhang, Xin ; Zhang, Shengdong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c332t-19f595ba8b3c003ee539c405cebd50112a473e834cd74a6b2b7a21d0ff00c8433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Active matrix displays</topic><topic>Active matrix organic light emitting diodes</topic><topic>always on display</topic><topic>AMOLED</topic><topic>Capacitors</topic><topic>Circuits</topic><topic>Couplings</topic><topic>display</topic><topic>Electric potential</topic><topic>in-pixel compensation</topic><topic>IR drop</topic><topic>low power</topic><topic>Low temperature</topic><topic>LTPO</topic><topic>Pixels</topic><topic>Power consumption</topic><topic>Power demand</topic><topic>Semiconductor devices</topic><topic>Silicon</topic><topic>Thin film transistors</topic><topic>Transistors</topic><topic>Voltage</topic><topic>Voltage drop</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qiu, Hezi</creatorcontrib><creatorcontrib>An, Junjun</creatorcontrib><creatorcontrib>Wang, Kun</creatorcontrib><creatorcontrib>Liao, Congwei</creatorcontrib><creatorcontrib>Dai, Chao</creatorcontrib><creatorcontrib>Zhang, Xin</creatorcontrib><creatorcontrib>Zhang, Shengdong</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE Open Access Journals</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>IEEE journal of the Electron Devices Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Qiu, Hezi</au><au>An, Junjun</au><au>Wang, Kun</au><au>Liao, Congwei</au><au>Dai, Chao</au><au>Zhang, Xin</au><au>Zhang, Shengdong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Low Power and IR Drop Compensable AMOLED Pixel Circuit Based on Low-Temperature Poly-Si and Oxide (LTPO) TFTs Hybrid Technology</atitle><jtitle>IEEE journal of the Electron Devices Society</jtitle><stitle>JEDS</stitle><date>2022</date><risdate>2022</risdate><volume>10</volume><spage>51</spage><epage>58</epage><pages>51-58</pages><issn>2168-6734</issn><eissn>2168-6734</eissn><coden>IJEDAC</coden><abstract><![CDATA[In this paper, an AMOLED pixel circuit based on low-temperature poly-crystalline silicon and oxide (LTPO) thin-film transistors (TFTs) hybrid technology is proposed, which features only two transistors in a serial connection with OLED. The power supply can thus be reduced by <inline-formula> <tex-math notation="LaTeX">25{\sim }30 </tex-math></inline-formula>% in the "Always-on-Display" (AOD) mode compared with the earlier LTPO pixel circuits which usually have three transistors in the current path and need a higher supply voltage. Furthermore, in addition to a strong suppressing ability to <inline-formula> <tex-math notation="LaTeX">\text{V}_{\mathrm{ th}} </tex-math></inline-formula> variations/shift, the proposed pixel circuit has an excellent compensation ability for current-resistance voltage drops (i.e., IR drop), which is also superior to the earlier LTPO ones where the IR drop has to be compensated externally. 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| subjects | Active matrix displays Active matrix organic light emitting diodes always on display AMOLED Capacitors Circuits Couplings display Electric potential in-pixel compensation IR drop low power Low temperature LTPO Pixels Power consumption Power demand Semiconductor devices Silicon Thin film transistors Transistors Voltage Voltage drop |
| title | A Low Power and IR Drop Compensable AMOLED Pixel Circuit Based on Low-Temperature Poly-Si and Oxide (LTPO) TFTs Hybrid Technology |
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