Backlight teeb rau LCD ntsuas yuav cuam tshuam rau qhov zoo ntawm cov duab uas tshwm rau nws. Nyob rau hauv cov ntaub ntawv ntawm lawv cov tsis ua hauj lwm, qhov no yog fraught nrog cov nram qab no txim:
- disappearance ntawm cov duab ntawm tus saib;
- tig rau lub monitor rau ib lub sij hawm luv luv, txog 1 thib ob, thiab tom qab ntawd ces xu siab;
- periodic blinking ntawm kev tshuaj ntsuam thiab tsis kaj lug tsis nto;
- Hloov cov duab tom qab los sis pom ntawm qhov tsaus nti rau nws;
- predominance nyob rau hauv cov dluab ntawm liab ntxoov.
Vim li no, cov khoom lag luam zoo tshaj plaws yog qhov tseem ceeb hauv kev txuag nws txoj haujlwm.
Fluorescent backlight LCD saib
Rau lub lag luam ruaj khov ntawm lub LCD saib, lub teeb ci yog qhov tseem ceeb ntawm qhov tseem ceeb. Nws cov fauxam flux tsim cov duab ntawm qhov screen. Yuav kom tsim tau lub teeb pom kev zoo, thiab tsim teeb pom kev zoo nrog lub teeb nrig nrog lub txias cathode CCFL. Lawv nyob rau saum toj thiab hauv qab hau ntawm lub monitor. Lawv lub homphiaj yog ua kom tsis muaj teeb ci tagnrho sab hauv lub npov LCD nrog ib txheej tawv diav.
Yuav ua li cas los hloov lub monitor backlight?
Thaum qhov teeb meem ntawm lub CCFL monitor ua faulty, nws yuav tshwm sim tau uas hu rau qhov chaw muab kev pab cuam tsis muab yam kev xav tau. Tom qab ib pliag, qhov teeb meem rov qab thiab lub teeb nres ce lawm. Hauv qhov no, lo lus nug tshwm sim: yuav ua li cas hloov lub teeb nrig rov qab saib?
Qhov zoo tshaj plaws kev xaiv yog siv LED backlight tsis ntawm lub teeb pom kev. Qhov no yuav pab txhawb ntxiv thiab txhim kho koj cov khoom.
Li no, thiaj li yuav tau txais ib daim duab zoo thaum lub LCD saib yog kev khiav hauj lwm, nws yog ib qho tseem ceeb uas lawv cov kev ua haujlwm uas tsis muaj kev cuam tshuam yog muab los ntawm lub teeb nrig. Thaum lawv tsis ua hauj lwm, LED illumination yuav daws qhov teeb meem.