Ngā Mōhiti AR Aratohu-Whārite Silicon Carbide: Te Whakarite i ngā Papa Whakamarumaru-Haurua-Parakore Teitei

I roto i te horopaki o te hurihanga AI, kei te piki haere te māramatanga o ngā mōhiti AR ki te marea. Hei tauira e whakakotahi ana i te ao mariko me te ao tūturu, he rerekē ngā mōhiti AR i ngā taputapu VR mā te āhei i ngā kaiwhakamahi ki te kite i ngā whakaahua e whakaatahia ana i te mamati me te māramatanga taiao i te wā kotahi. Hei whakatutuki i tēnei mahi rua—te whakaata i ngā whakaahua whakaaturanga iti ki roto i ngā kanohi me te tiaki i te tuku māramatanga o waho—ka whakamahia e ngā mōhiti AR e ahu mai ana i te silicon carbide (SiC) he hoahoa arataki ngaru (arataki mārama). Ka whakamahia e tēnei hoahoa te whakaata ā-roto katoa hei tuku whakaahua, he rite ki te tuku muka whatu, e whakaaturia ana i roto i te hoahoa kauwhata.

I te nuinga o te wā, ka taea e te papa whakamahana-haurua teitei 6-inihi te whakaputa i ngā takirua karāhe e rua, i te papa 8-inihi ia ka taea te whakauru i ngā takirua e 3-4. Mā te whakamahi i ngā rauemi SiC ka puta ngā painga nui e toru:

1. Taupū whakaata tino pai (2.7): Ka taea te whakaatu i te tirohanga tae katoa (FOV) >80° me te paparanga arotahi kotahi, ka whakakore i ngā āhuatanga āniwaniwa e kitea ana i roto i ngā hoahoa AR tuku iho.
2. Arataki ngaru tae-toru (RGB) whakauru: Ka whakakapi i ngā puranga arataki ngaru paparanga-maha, ka whakaiti i te rahi me te taumaha o te taputapu.
3. Te kawe wera pai rawa atu (490 W/m·K): Ka whakaiti i te pirau whatu i puta mai i te kohikohinga wera.

Nā ēnei painga i akiaki te hiahia nui o te mākete mō ngā mōhiti AR e hangai ana ki te SiC. Ko te SiC kounga-whatu e whakamahia ana he mea hanga i ngā tioata haurua-whakamaroke teitei-parakore (HPSI), ā, ko ngā whakaritenga whakarite pakari e whai wāhi ana ki ngā utu nui o nāianei. Nō reira, he mea nui te whanaketanga o ngā papa HPSI SiC.

1. Te Hanganga o te Paura SiC Āhua-Whakamātao
Ko te nuinga o te wā, ko te whakaputanga ā-ahumahi e whakamahi ana i te hanga whakaputa-ake pāmahana-tiketike (SHS), he tukanga e hiahia ana kia tino whakahaerehia:

• Rauemi mata: 99.999% paura waro/silicon parakore me te rahi o ngā matūriki o te 10–100 μm.
• Parakore o te para: Ka purea ngā wāhanga karāpiti i te pāmahana teitei hei whakaiti i te horapa o te poke whakarewa.
• Whakahaere āhuarangi: Ka pehia e te argon parakore 6N (me ngā pūwhakapaipai ā-roto) te whakaurunga hauota; ka tāpirihia pea he iti noa o ngā hau HCl/H₂ hei whakakorikori i ngā pūhui boron me te whakaiti i te hauota, ahakoa me arotau te kukū H₂ hei ārai i te waikura o te karāhe.
• Ngā paerewa taputapu: Me tutuki i ngā oumu hangai te korehau turanga <10⁻⁴ Pa, me ngā tikanga tirotiro turuturu pakari.

2. Ngā Wero o te Tipu Karāhe
He rite tonu ngā whakaritenga parakore mō te tipu HPSI SiC:

• Kai: Paura SiC parakore 6N+ me te B/Al/N <10¹⁶ cm⁻³, Fe/Ti/O i raro i ngā paearu, me te iti rawa o ngā konganuku kawakore (Na/K).
• Ngā pūnaha hau: Ka whakarei ake te ātete o ngā ranunga 6N argon/hauwai.
• Taputapu: Mā ngā papu ngota ngota ka tino tiketike te korehau (<10⁻⁶ Pa); he mea nui te maimoatanga-mua i roto i te ipu para me te whakakorenga hauota.

2.1 Ngā Auahatanga Tukatuka Papa
Ki te whakatauritea ki te silicon, ko ngā huringa tipu roa o te SiC me te ahotea ā-roto (e hua ai te ngatata/te pakaru o te taha) me whai tukatuka matatau:

• Te tapahi taiaho: Ka whakapiki ake i te hua mai i te 30 ngā angaanga (350 μm, kani waea) ki te >50 ngā angaanga mō ia poro 20-mm, me te kaha ki te angiangi 200-μm. Ka heke te wā tukatuka mai i te 10–15 ngā rā (kani waea) ki te <20 meneti/angaanga mō ngā tioata 8-inihi.

3. Ngā Mahi Tahi a te Ahumahi

Nā te tīma Orion a Meta i ārahi te whakamahi i te arataki ngaru SiC kounga-whatu, e akiaki ana i ngā haumitanga R&D. Ko ngā hononga matua ko:

• TankeBlue me MUDI Micro: Te whakawhanaketanga ngātahi o ngā karāhe arataki ngaru diffractive AR.
• Jingsheng Mech, Longqi Tech, XREAL, me Kunyou Optoelectronics: He hononga rautaki mō te whakaurunga mekameka tuku AI/AR.

E matapaetia ana e ngā matapae mākete e 500,000 ngā waeine AR e hangai ana ki te SiC i ia tau i te tau 2027, ā, e pau ana i te 250,000 ngā papa 6-inihi (125,000 rānei 8-inihi). E whakaatu ana tēnei huarahi i te tūranga whakarerekētanga a SiC i roto i ngā whatu AR o te whakatupuranga e whai ake nei.

He tohunga a XKH ki te whakarato i ngā papa SiC 4H-haurua-whakamaroke (4H-SEMI) kounga teitei me ngā diameter ka taea te whakarite mai i te 2-inihi ki te 8-inihi, he mea whakarite kia tutuki ai ngā whakaritenga tono motuhake i roto i te RF, te hikohiko mana, me te AR/VR whatu. Kei roto i ō mātou kaha te tuku rōrahi pono, te whakaritenga tika (matotoru, te whakatakotoranga, te whakaotinga mata), me te tukatuka katoa i roto i te whare mai i te tipu tioata ki te whakakanapa. Haunga te 4H-SEMI, ka tukuna hoki e mātou ngā papa momo-4H-N, momo-4H/6H-P, me te 3C-SiC, e tautoko ana i ngā auahatanga kanorau mō ngā semiconductor me ngā optoelectronic.