Kufurira kweEpoxy Resin Encapsulation paOptical Properties ye LEDs

 

LED (Chiedza Emitting Diode), semhando itsva ye-high-effective uye simba rekuchengetedza chiedza chitubu, yakashandiswa zvakanyanya mundima dzakawanda dzakadai sekuvhenekera uye kuratidza. Epoxy resin, nekuda kwekujeka kwayo kwemaziso, kuvharidzira pfuma, uye mashandiro emuchina, yave chinhu chinowanzoshandiswa mu LED encapsulation. Iyo yemaziso emhando ye LEDs (yakadai seyakajeka kusimba, kusimba kwemavara, kugovera angular, nezvimwewo) inokanganisa zvakananga kuita kwavo mumamiriro akasiyana ekushandisa uye ruzivo rwemushandisi. Uye epoxy resin encapsulation, sechinhu chakakosha chinongedzo mukugadzirwa kwe LED, ine zvakakosha pakuona kwemaitiro e LED. Tsvakurudzo yakadzama pamusoro pesimba re epoxy resin encapsulation pane optical properties ye LEDs yakakosha zvikuru pakuvandudza kunaka kwezvigadzirwa zve LED uye kuwedzera minda yavo yekushandisa.

Hunhu hweEpoxy Resin uye LED Encapsulation

Epoxy resin ndeye thermosetting resin ine yakanakisa optical transparency, iyo inogonesa iyo mwenje inoburitswa neiyo LED chip kuti ipfuure nepakati encapsulation zvinhu zvakanyanya sezvinobvira. Iyo refractive index inowanzotenderedza 1.5, iyo yakasiyana neiyo yezvigadzirwa zve LED chip (senge GAN, nezvimwewo). Munguva ye encapsulation process, mushure mekunge epoxy resin yakasanganiswa neanorapa agent, kuchinjika-kusangana kunoitika kuburikidza nekudziya uye dzimwe nzira dzekuita matatu-dimensional network chimiro chechinhu chakasimba. Iyo yakaporeswa epoxy resin ine yakanaka mechanical simba uye kugadzikana kwemakemikari, iyo inogona kuchengetedza iyo LED chip kubva mukufurirwa kwekunze kwezvakatipoteredza uye zvakare ine yakakosha kukanganisa pane yekuona zvinhu zve LED.

 

Kufurira kwe Epoxy Resin Encapsulation paLuminous Intensity ye LEDs

(A) Optical Transparency uye Light Propagation

Kujeka kwemaziso epoxy resin ndechimwe chezvinhu zvakakosha zvinokanganisa kupenya kwe LED. Kana pane kusvibiswa, mabhubhu, kana kurapa kusina kukwana mu epoxy resin panguva yekurapa, ichaita kuti chiedza chipararire uye chinyamuke panguva yekuparadzira, nokudaro kuderedza kutenderera kwechiedza uye kuderedza simba rinopenya re LED. Semuenzaniso, mabhuru madiki anoshandura nzira yekuparadzira yechiedza, ichiita kuti mwenje uratidze uye udzoke kakawanda, zvichiwedzera kurasikirwa kwechiedza mukati meepoxy resin. Uye kuvapo kwehutsvina kunotora mwenje wewavelengths chaiwo, zvichiwedzera kuderedza kupenya kwesimba. Naizvozvo, kuvandudza kuchena kwe epoxy resin uye kunaka kwekurapa, uye kuderedza kukanganisa kwemukati kwakakosha pakuwedzera kupenya kwe LED.

(B) Refractive Index Matching

Iyo dhigirii refractive index inoenderana pakati peiyo LED chip uye epoxy resin inokanganisawo kupenya kwakanyanya. Kana chiedza chinobudiswa ne LED chip chinopinda mu epoxy resin kubva ku chip, kana refractive indices yezviviri zvakasiyana zvikuru, refraction yakakura uye kufungidzira kuchaitika, zvichiita kuti chimwe chechiedza chisakwanise kubuda kunze kwe epoxy resin, nokudaro kuderedza kupenya kwakanyanya. Nekusarudza yakakodzera epoxy resin kana kuwedzera refractive index modifier kune epoxy resin, iyo refractive index matching inogona kugadziriswa, kutaridzika kurasikirwa kwechiedza kunogona kuderedzwa, kupenya kwekubatanidza kwechiedza kunogona kuvandudzwa, uye nokudaro kupenya kwechiedza kwe LED kunogona kuwedzera. Semuenzaniso, kushandisa epoxy resin ine high refractive index inogona kubvumira chiedza chakawanda kuti chipinde mu epoxy resin kubva kune chip uye kuderedza kuratidzwa kwechiedza pane interface.

(C) Encapsulation Ukobvu

Iyo encapsulation ukobvu hweepoxy resin zvakare ine imwe pesvedzero pane inopenya kusimba kweiyo LED. Iyo yakakora encapsulation layer ichawedzera nzira yekuparadzira yechiedza mukati meepoxy resin, nekudaro ichiwedzera mikana yekupararira kwechiedza uye kunyura uye kuderedza kupenya kwakanyanya. Uye zvakare, iyo yakawandisa yakakora encapsulation layer inogonawo kukonzera kupisa kuungana kwakatenderedza chip, kukanganisa kushanda kwechip uye zvisina kunanga kudzikisa kupenya kwakanyanya. Nekudaro, iyo encapsulation ukobvu haigone kuve yakatetepa zvakanyanya, zvikasadaro haigone kupa yakakwana mechanical kudzivirira uye optical kufanana. Naizvozvo, zvinoenderana nezvinodiwa zvekushandisa uye maitiro eiyo LED chip, iyo encapsulation ukobvu hweepoxy resin inoda kudzorwa zvine mutsindo kuti iwane yakanyanya kupenya kupenya.

 

Kufurira kweEpoxy Resin Encapsulation pane iyo Rudzi Consistency ye LEDs

(A) Refractive Index Shanduko uye Ruvara Shift

Sezvambotaurwa pamusoro apa, iyo refractive index ye epoxy resin ichabatwa nezvinhu zvakawanda, zvakadai sekuporesa mamiriro, tembiricha, humidity, etc. Kana iyo refractive index ye epoxy resin inoshanduka, kukurumidza kupararira uye refraction angle yechiedza chewavelengths yakasiyana-siyana mairi ichachinjawo, zvichiita kuti pave nekuchinja kwemavara. Semuenzaniso, kuwedzera kwekushisa kunogona kuita kuti refractive index ye epoxy resin ideredze, zvichiita kuti kukurumidza kupararira kwechiedza chitsvuku kukurumidza uye kupararira kwechiedza chebhuruu zvishoma nezvishoma, zvichiita kuti ruvara rwechiedza chinobudiswa ne LED chiende kune rutsvuku. Naizvozvo, panguva ye LED encapsulation process, mamiriro ekurapa uye nharaunda yekushanda inoda kunyatsodzorwa kuti ive nechokwadi chekugadzikana kweiyo refractive index ye epoxy resin uye nekudaro kuve nechokwadi chekuenderana kwemavara.

(B) Kupararira uye Kufanana kwePhosphor

Muma LED machena, phosphors inowanzowedzerwa kune epoxy resin kuti iwane kuchena kwechiedza. Kupararira kufanana kwephosphors kune yakakosha pesvedzero pakuenderana kwemavara eiyo LED. Kana iyo phosphors isina kufanana yakapararira mu epoxy resin, inotungamira kune kwakasiyana phosphor kuwanda mumatunhu akasiyana, zvichikonzera kusiyana kwemavara muchiedza chinoburitswa kubva kumatunhu akasiyana. Semuenzaniso, kuwandisa kwephosphor yakawandisa munzvimbo yemuno kuchaita kuti mwenje unoburitswa kubva munzvimbo iyoyo uve yero, nepo nzvimbo ine yakaderera phosphor concentration ingangoita yebhuruu. Kuti uvandudze kupararira kufanana kwephosphors, nzira yakakodzera yekukurudzira uye zvinowedzera zvinogona kushandiswa kuve nechokwadi chekuti phosphors yakagoverwa zvakafanana mu epoxy resin.

(C) Kukwegura kweEpoxy Resin uye Kuchinja Kwemavara

Nokufamba kwenguva uye nekuchinja kwemamiriro ekushandiswa, iyo epoxy resin ichaita zviitiko zvekukwegura, zvakadai seyero, kuora, nezvimwewo. Izvi zviitiko zvekukwegura zvichashandura maitiro epoxy resin epoxy uye nokudaro zvinokanganisa kuwirirana kwemavara e LED. Semuenzaniso, kutsvuka kweepoxy resin kunotora mwenje webhuruu, zvichiita kuti ruvara rwechiedza chinoburitswa ne LED chienderere kuyero. Kuti kunonoka kuchembera kwe epoxy resin uye kuvandudza kugadzikana kwemavara, anti-aging agents, ultraviolet absorbers, uye zvimwe zvinowedzera zvinogona kuwedzerwa kune epoxy resin. Panguva imwecheteyo, iyo encapsulation chimiro inogona kugadziridzwa kuderedza kukanganiswa kwekunze kwekunze pane epoxy resin.

 

Kufurira kweEpoxy Resin Encapsulation pane Angular Distribution ye LEDs

(A) Encapsulation Shape uye Chiedza Refraction

Iyo encapsulation shape ye epoxy resin inozokanganisa kudzoreredza uye kuparadzira kutungamira kwechiedza, nekudaro ichichinja kugoverwa kweangular kwe LED. Common encapsulation shapes zvinosanganisira denderedzwa, sikweya, hemispherical, etc. Different encapsulation shapes will result in different incident angles of light on the surface of the epoxy resin, nokudaro zvichikanganisa refraction angle uye nzira yekubuda nayo kwechiedza. Semuenzaniso, hemispherical encapsulation inogona kuita kuti chiedza chipararire zvakaenzana kumativi ose, kubudirira kupararira kwekona; nepo sikweya encapsulation ingakonzeresa kuti mwenje utarise mune mamwe mativi, ichigadzira yakamanikana kugovera angular. Naizvozvo, maererano nezvinodiwa zvekushandisa, kusarudza yakakodzera encapsulation chimiro kunogona kugadzirisa angular kugovera kwe LED kuti isangane nemwenje wakasiyana uye kuratidza zvinodiwa.

(B) Refractive Index Gradient uye Light Control

Nekugadzira refractive index gradient mu epoxy resin, kunyatso kudzora kwechiedza kunogona kuwanikwa, nokudaro kushandura angular kugovera kwe LED. Semuenzaniso, epoxy resin zvinhu ine gradient refractive index inogona kushandiswa kushandura zvishoma nezvishoma kutungamira kwechiedza panguva yekuparadzira nzira kuti iwane chaiyo angular kugovera. Mukuwedzera, microstructures (senge microlens arrays) inogona kuwedzerwa pamusoro pe epoxy resin, uye refraction uye kuratidzira migumisiro ye microstructures inogona kushandiswa kuenderera mberi nekugadzirisa kona yekubuda kwechiedza kuti iwane kupararira kwakatetepa kana kwakafara.

(C) Kufuridzirwa kweEcapsulation Process paAngular Distribution

Iko kurongeka uye kuenderana kweiyo encapsulation process kuchakanganisawo kugoverwa kweangular ye LED. Semuenzaniso, panguva yekugovera encapsulation process, kana huwandu hweglue husina kuenzana kana nzvimbo yekuparadzira isina kurongeka, zvinotungamira mukusaenzana kugovaniswa kweiyo epoxy resin yakatenderedza LED chip, zvichikanganisa kupararira kwechiedza uye kugoverwa kweangular. Mukuwedzera, kutonga kusina kunaka kwekushisa uye nguva panguva yekurapa kunogona kukonzera kusaenzana shrinkage ye epoxy resin, kushandura chimiro uye optical properties ye encapsulation, uye nokudaro kukanganisa kugoverwa kweangular. Naizvozvo, optimize encapsulation process uye kuvandudza mashandiro ekuita uye kuenderana kwakakosha pakuona kugadzikana kweangular kugovera kwe LED.

 

Nzira dzeKukwirisa Epoxy Resin Encapsulation yeKuvandudza Iyo Optical Properties ye LEDs.

(A) Kusarudzwa kwezvinhu uye Kugadzirisa

Kusarudza epoxy resin ine kuchena kwepamusoro uye yakaderera kusvibiswa kwemukati, pamwe neanorapa agent uye zvinowedzera zvine kuenderana kwakanaka neiyo epoxy resin, ndiyo hwaro hwekuvandudza maitiro eiyo LED. Panguva imwecheteyo, zvinoenderana nezvinodiwa zvekushandisa, epoxy resin zvinhu zvine chaiyo refractive index, kugadzikana kwekupisa, uye optical zvimiro zvinogona kusarudzwa. Semuenzaniso, kune yakakwirira-simba LEDs, kusarudza epoxy resin ine yakakwira yekupisa conductivity uye yakaderera hygroscopicity inogona kunyatso kudzikisa tembiricha yechip uye kuderedza kuderera kwezvinhu zvemaziso.

(B) Kuvandudzwa kweEncapsulation Process

Kugadziridza maitiro ekuvhara, senge kunyatso kudzora huwandu hwekugovera, nzvimbo yekuparadzira, uye mamiriro ekurapa, anogona kuvandudza iko kurongeka uye kuenderana kweiyo encapsulation uye kuderedza kushanduka kwezvinhu zvemaziso. Kutora tekinoroji yekuisa encapsulation, yakadai seflip-chip packaging, chip-scale packaging, nezvimwewo, inogona kupfupisa nzira yekuparadzira yechiedza, kuderedza kurasikirwa kwechiedza, nekuvandudza kupenya kusimba uye kugadzikana kwezvinhu zvemaziso. Uye zvakare, kuunza micro-nano processing tekinoroji kugadzira microstructures pamusoro peiyo epoxy resin inogona kuwana kunyatso kudzora kwechiedza uye kunatsiridza kugoverwa kweangular.

(C) Kuongorora Kwehutano uye Kudzora

Kugadzira yakakwana yemhando yekuongorora system yekuyedza zvizere maoptical emhando dzemaLED akaputirwa ne epoxy resin, kusanganisira kutariswa kwezviratidzo zvakaita sekupenya kwesimba, kusimba kwemavara, uye kugoverwa kweangular. Kuburikidza nenguva chaiyo yekutarisa uye kuongororwa kwedata, matambudziko anoitika panguva ye encapsulation process anogona kuwanikwa uye kugadziriswa panguva yakakodzera kuve nechokwadi kugadzikana uye kuenderana kwemhando yechigadzirwa.

mhedziso

Epoxy resin encapsulation ine simba rakakosha pane optical properties (luminous intensity, color consistency, angular distribution, etc.) ye LEDs. Nekunzwisisa zvakadzama hukama pakati pehunhu hwe epoxy resin, iyo encapsulation process, iyo yekurapa maitiro, uye optical properties ye LEDs, matanho anoenderana anogona kutorwa kuti agadzirise encapsulation process uye kunatsiridza optical maitiro e LEDs. Mukuvandudza mune ramangwana, nekuenderera mberi kwehunyanzvi hweLED uye nekuenderera mberi kwekuwedzera kweminda yekushandisa, zvinodiwa zveepoxy resin encapsulation zvichavawo pamusoro nepamusoro. Isu tinofanirwa kuramba tichiongorora zvinhu zvitsva, maitiro, uye matekinoroji kuti tisangane nezvinodiwa zveindasitiri yeLED yezvigadzirwa zvepamusoro-soro uye zvinovimbika zvakanyanya uye nekusimudzira kusimukira kwakasimba kweindasitiri yeLED.

Kuti uwane zvakawanda nezve kusarudza yakanakisa pesvedzero ye epoxy resin encapsulation pane optical zvimiro zve LEDs, unogona kushanyira DeepMaterial pa. https://www.epoxyadhesiveglue.com/category/epoxy-adhesives-glue/ nokuti zvimwe info.