Kuyamba kwa LTPS?

Low Temperature Poly-silicon (LTPS) poyambilira inali kampani yopanga ukadaulo ku North America ku Japan kuti ichepetse kugwiritsa ntchito mphamvu kwamawonetsero a Note-PC, ukadaulo wopangidwa kuti apange-PC yowoneka yopepuka komanso yopepuka, Cha m'ma 1990, ukadaulo uwu idayamba kulowa muyeso .Mibadwo yatsopano yamagetsi yotulutsa kuwala OLED yochokera ku LTPS idalowanso mwalamulo mu 1998, Ubwino wake waukulu ndi wopepuka, wopepuka, kugwiritsa ntchito mphamvu zochepa. Itha kupereka mitundu yowala bwino zithunzi.

Kutentha kochepa polysilicon

 TFT LCD ikhoza kugawidwa polysilicon (Poly-Si TFT) ndi amorphous silicon (a-Si TFT), Kusiyana pakati pa mabodza awiriwa pamakhalidwe a transistor .Mapangidwe am'magazi a polysilicon amakonzedwa mwabwino komanso molunjika mu njere, Chifukwa chake, kayendedwe ka ma elekitironi ndi 200-300 kuposa momwe amakanikira amorphous silicon; TFT-LCD yomwe imadziwika kuti silicon ya amorphous, ukadaulo wokhwima, Ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri ku LCD .Polysilicon product imaphatikizapo kutentha kwambiri polysilicon (HTPS) ndi polysilicon (LTPS).

 Kutentha Kwambiri Poly-silicon (LTPS) woonda filimu transistor madzi amadzimadzi owoneka ngati kristalo ali mkati moyikapo, Kugwiritsa ntchito excimer laser ngati gwero la kutentha, Kuwala kwa laser kudutsa pulogalamuyo, Kutulutsa mtanda wa laser wokhala ndi kufalitsa mphamvu yofananira, Kuwonetsedwa pa gawo lapansi lagalasi lokhala ndi amorphous silicon kapangidwe, Pomwe gawo lamagalasi amorphous limatenga mphamvu ya excimer laser, Lidzasintha kukhala polysilicon, Chifukwa njira yonse yamankhwala imamalizidwa pansi pa 600 ℃, Chifukwa chake, magalasi ambiri amagalasi amagwiranso ntchito.

Khalidwe

  LTPS-TFT LCD ili ndi maubwino otha kusankha bwino, kuyankha mwachangu, kuwala kwambiri, komanso kuchuluka kwa malo osungira In Kuphatikiza apo, popeza kachulukidwe ka sililiconi ya LTPS-TFT LCD ndiyabwino kwambiri kuposa a-Si, Pangani mayendedwe amagetsi apamwamba kuposa nthawi 100, Dera loyendetsa mozungulira limatha kupangidwa pagalasi nthawi yomweyo, Fikirani cholinga chophatikiza, kusunga malo ndikuyendetsa mtengo wa IC.

  Panthawi imodzimodziyo, Popeza dalaivala wa IC amapangidwa mwachindunji pagululi, Amatha kuchepetsa zinthu zakunja, Kuchulukitsa kudalirika, kukonza kosavuta, kufupikitsa nthawi ya msonkhano ndikuchepetsa mawonekedwe a EMI, Izi zimachepetsa nthawi yakapangidwe kazomwe amagwiritsa ntchito ndikukulitsa kupanga ufulu.

  Ukadaulo wapamwamba kwambiri wa LTPS-TFT LCD ndikuti akwaniritse System on Panel, Mbadwo woyamba wa LTPS-TFT LCD umagwiritsa ntchito makina oyendetsa ma pixel komanso magwiridwe antchito apamwamba kuti akwaniritse mawonekedwe abwino komanso owala kwambiri. Yapanga LTPS-TFT LCD ndi a-Si kukhala ndi kusiyana kwakukulu.

  Mbadwo wachiwiri wa LTPS-TFT LCD kudzera pakupititsa patsogolo ukadaulo wapa dera, Kuchokera pa mawonekedwe a analog mpaka mawonekedwe a digito, Kuchepetsa kugwiritsa ntchito magetsi. Kuyenda kwa m'badwo uno wa LTPS-TFT LCD ndi maulendo 100 poyerekeza ndi a-Si TFT, Kutalika kwa mzere wama elekitirodi pafupifupi 4μm, Makhalidwe a LTPS-TFT LCD sanagwiritsidwe ntchito kwathunthu.

  LTPS-TFT LCD ya m'badwo wachitatu ndi yokwanira kuphatikizira madera ambiri ophatikizika (LSI) kuposa m'badwo wachiwiri, Cholinga chake ndi ichi: (1) Palibe magawo azipangizo zomwe zimapangitsa gawoli kukhala locheperako komanso locheperako, Litha amachepetsa kuchuluka kwa magawo ndi nthawi yamagulu; (2) Kusintha kwa ma siginidwe kumachepetsa kugwiritsidwa ntchito kwamagetsi; (3) Kukhala ndi kukumbukira kuti muchepetse kugwiritsidwa ntchito kwamagetsi.

  Chifukwa LTPS-TFT LCD yowonetsera kristalo yamadzimadzi imakhala ndiubwino wosankha bwino, kukhathamiritsa kwamitundu yayikulu, ndi mtengo wotsika, chiyembekezo chachikulu chimayikidwa pamayendedwe atsopano owonetsera.Ndi mawonekedwe ake ophatikiza kuphatikiza kwakukulu komanso maubwino otsika mtengo, Ali ndi mwayi wonse pakagwiritsidwe kazowonetsera kakang'ono komanso kakang'ono. Koma p-Si TFT ili ndi mavuto awiri, Limodzi ndiloti zakunja kwa boma (mwachitsanzo, kutayikira kwaposachedwa) kwa TFT ndikokulirapo (Ioff = nuVdW / L); Chachiwiri, ndizovuta kukonzekera zida zoyenda kwambiri za p-Si M'madera akulu otentha kwambiri. Pali zovuta zina panthawiyi.

  Ndi chida cham'badwo watsopano chomwe chimachokera ku TFT LCD. Chophimba cha LTPS chimapangidwa ndikuwonjezera njira yothandizira laser kuzipangizo zamtundu wa amorphous silicon (a-Si) TFT-LCD. Chiwerengero cha zida zimatha kuchepetsedwa ndi 40%, Ndipo gawo lolumikizirana limatha kuchepetsedwa ndi 95%, Kuchepetsa kwambiri mwayi wazinthu zoperewera.Chithunzichi chasintha kwambiri potengera kugwiritsa ntchito mphamvu komanso kulimba, Mawonekedwe oyang'ana osakhazikika komanso owonekera amatha kufikira madigiri 170, Sonyezani kuyankha nthawi mpaka 12ms, Chiwonetserochi kuwala kumafikira nkhono za 500, Chiwerengero chosiyanitsa chitha kufikira 500: 1.

Pali njira zitatu zazikulu zophatikizira ma driver a P-Si otentha kwambiri:

1, Kuphatikiza kophatikiza kwa kusinthana ndi kusintha kwa deta, dera limaphatikizidwa, kusinthana ndi kaundula kosakanikirana kumalumikizidwa mu dera lazolowera, ma Multiple omwe amalankhula ndi madalaivala ndi ma amplifiers amalumikizidwa kuwonetsera kwa lathyathyathya ndi madera obadwa nawo;

2, madera onse pagalimoto kwathunthu Integrated pa zenera;

3, madera Oyendetsa ndi kuwongolera akuphatikizidwa pazenera.

 


Post nthawi: Jan-07-2021