Miks LED-taustvalgustuse valgusjuhtplaadi laserpunkteerimine asendab siidiekraaniga valgusjuhtplaati?

Taustvalgustuse moodul on vedelkristallkuvari valgusallika pakkuja. LCD ise valgust ei kiirga. Taustvalgustuse mooduli valgusallika jõudlus määrab ekraani visuaalse taju. Valgusjuhtplaat on taustvalgustuse mooduli valgusallika ülekandemeedium. Selle punktide paigutus, kuju ja materjali koostis määravad väljuva valgusallika heleduse, jaotuse ühtluse ja valguse efektiivsuse. Valgusjuhtplaat on LED-taustvalgustuse mooduli võti. komponendid. Määrab valgustugevuse ja valguse ühtluse.

LED-taustvalgustuse allikas, põhikomponent on valgusjuhtplaat, mida nimetatakse ka valgust -kiirgavaks plaadiks, see koosneb akrüülist (PMMA) või PC- või PS-materjalist, selle tootmismeetodid on järgmised?

1. Laserpunkteerimine

Niinimetatud-lasermäärimine on lasermäärimismasina kasutamine. Füüsiline põhimõte on tavaliselt paigaldada suure-heledusega LED-lambi helmed teatud paksusega-läbipaistva akrüüllehe küljele ning valgus, näiteks LED-id, volditakse kokku ja levib akrüüllehe sees teatud lahknemisnurk. Kui valgus kiiritab akrüüli tagaküljel paiknevaid ja CO2 (süsinikdioksiid) laseriga söövitatud laserpunkte, tekitab see hajusat peegeldust ja murdumist, nii et valgus saab valgusjuhtplaadil ühtlaselt jaotuda. Selle eelised on: hea mõju, pikk kasutusaeg, lihtne protsess

  Second, open mold light guide plate

  The so-called open-mould light guide plate is a light guide plate with bumps formed by injection molding with a pre-designed mold by an injection molding machine.

  Three, silk screen light guide plate

 The so-called screen printing light guide plate is through the screen printing machine, adding ink and screen printing screen frame, screen printing on the acrylic surface to form dot-shaped ink dots.

  Analysis of the reasons why the laser spotting of the light guide plate will gradually replace the silk-screened light guide plate?

  Nowadays, more and more light guide plate manufacturers choose to use laser dots to make light guide plates. Why?

  First, the process of silk-screening the light guide plate is complicated. The acrylic sheet needs to be printed on the screen and ink, and then dried through the screen printing tunnel furnace to become the dot light guide plate. Among them, the production time period of the stencil is relatively long, usually takes a week, and each link requires manual operation.

  Second, environmental pollution is large. The production of silk-screen light guide plates requires ink, but ink is the biggest source of pollution in the printing industry. Because it is an organic volatile compound, it will form oxides and photochemical smog under sunlight, and the smell is particularly strong and pungent. Long-term operation may affect people's health.

  Third, it is easy to yellow and has a short lifespan. Since the heat generated by the LED during the lighting process will affect the ink, the ink dots will affect the emission of light, resulting in the phenomenon of light decay, which will eventually lead to uneven light or yellowing of the LED panel light, and the use time is not long.

  To sum up, the advantages of using the light guide plate laser marking machine for marking are gradually emerging, and more and more people use the light guide plate laser marking machine to make the light guide plate!