Hvorfor LED-baggrundslys-lysstyreplade med laserprikker vil erstatte silkeskærms-lysstyreplade?
Mar 30, 2022
Baggrundsbelysningsmodulet er leverandøren af lyskilden til LCD-skærmen med flydende krystal. LCD'et i sig selv udsender ikke lys. Ydeevnen af baggrundsbelysningsmodulets lyskilde bestemmer den visuelle fornemmelse af displayet. Lyslederpladen er transmissionsmediet for baggrundsbelysningsmodulets lyskilde. Dens prik-arrangement, form og materialesammensætning bestemmer ydeevnen af lysstyrken, fordelingsensartetheden og lysoutputeffektiviteten af den udgående lyskilde. Lyslederpladen er nøglen til LED-baggrundsbelysningsmodulet. komponenter. Bestemmer lyseffektiviteten og lysens ensartethed.
LED-baggrundsbelysningskilde, hovedkomponenten er lyslederplade, også kaldet lys-emitterende plade, den er sammensat af akryl (PMMA) eller PC- eller PS-materiale, dens fremstillingsmetoder er som følger?
1. Laserprikker
Den så-laserspotting er at bruge en laserspotting-maskine. Det fysiske princip er normalt at installere LED-lampeperler med høj-lysstyrke på siden af en høj-gennemsigtig akrylplade med en vis tykkelse, og lys såsom LED'er foldes og forplantes inde i akrylpladen kl. en vis divergensvinkel. Når lyset stråler på laserprikkerne fordelt på bagsiden af akrylen og ætset med CO2 (kuldioxid) laser, vil det frembringe diffus refleksion og brydning, så lyset kan fordeles jævnt på lyslederpladen. Dens fordele er: god effekt, lang brugstid, enkel proces
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!
