Feem ntau muaj ob qhov chaw nrog cov dots thaum lub LCD kua siv lead ua kua ua haujlwm: lub voj voog tsav ntawm PCB substrate thiab cov coj ntawm lub teeb rov qab. Kev tsim hluav taws xob cuam tshuam nrog PCB substrate yog EMI tsim, thiab hluav taws xob tsim ntawm lub teeb pom kev zoo yog cov rwb thaiv tsev tiv thaiv hluav taws xob tsim. Daim ntawv no qhia txog lub tswv yim tsim Circuit Court ntawm LCD kua siv lead ua tshuaj ntsuam los ntawm ob yam ntawm EMI tsim thiab rwb thaiv tsev tiv thaiv voltage tsim.
1. EMI ntawm PCB substrate
EMI yog lub hauv paus ua rau muaj kev cuam tshuam hluav taws xob. Thaum tsim lub teeb liab ua lub rooj tsavxwm, kev tsim hluav taws xob tsim hluav taws xob tsim nyog yuav tsum tau ua. Txoj hauv kev tseem ceeb yog los npog lub substrate nrog ib daim ntaub thaiv hlau, los yog siv cov ntaub thaiv npog los tiv thaiv kev cuam tshuam ntawm sab nraud electromagnetic cuam tshuam ntawm substrate. Txhawm rau tiv thaiv cov hlau thaiv txheej los ntawm kev xoob thiab tsim kev tiv thaiv, cov ntsia hlau lossis cov khoom sib txuas tuaj yeem siv rau ntau qhov sib txuas. Tsis tas li ntawd, kev sib txuas cov teeb liab hauv av ntawm lub teeb liab substrate rau lub rooj tsav xwm hauv av ntawm cov phaj hlau kuj tuaj yeem txo qhov xau ntawm hluav taws xob cuam tshuam rau sab nraud. Nyob rau tib lub sijhawm, cov ntaub nplaum kuj tseem siv tau los ntxiv dag zog rau kev sib cuag ntawm cov ntawv hlau thiab cov substrates.
2. LED backlight rwb thaiv tsev tiv taus voltage
LED backlights tsis xav tau high-voltage tsav tsheb, thaum CCFLs yuav tsum tau high-voltage tsav ntawm ob peb txhiab volts, yog li lub dielectric withstand voltage tsim ntawm lub LCD module yog tsom rau cov qauv ntawm CCFL backlights. Rwb thaiv tsev thiab tiv taus hluav taws xob tsim yuav tsum tau tsim cov qauv tsim yuav tsum ua kom tau raws li cov qauv ntawm cov hluav taws xob rwb thaiv tsev tiv thaiv hluav taws xob muaj peev xwm, nrog rau cov kev xav tau ntawm qhov chaw nyob deb thiab kev sib cais ntawm qhov nruab nrab insulating. Tshwj xeeb, nws yog qhov yuav tsum tau ua kom paub meej qhov siab tshaj plaws voltage specification ntawm cov xaim ntawm lub teeb, xyuam xim rau qhov siab tshaj plaws txav ntawm thaj chaw high-voltage thiab insulating lub caij, thiab qhov kev ncua deb ntawm thaj chaw high-voltage thiab insulating lub caij. Conductive hais, thiab nruab nrab ntawm transformer coils, high voltage terminals thiab conductive ntsiab. nyob deb
