Kev kuaj xyuas electrostatic cuam tshuam hauv LED cov ntxaij vab tshaus yuav tsum muaj kev sib txuas ntawm kev pom kev pom, kev siv cov cuab yeej ntsuas kev tshaj lij, thiab kev tshawb nrhiav ib puag ncig. Cov hauv qab no yog cov txheej txheem tshawb nrhiav thiab cov kauj ruam:
I. Kev soj ntsuam ntawm Phenomena: Tej yam tshwm sim ntawm Electrostatic cuam tshuam
(1) Cov tsos mob txawv txav
Lub zos flickering: Random brightness fluctuations tshwm sim nyob rau hauv tej qhov chaw ntawm LED xauj tsev screen, tshwj xeeb tshaj yog pom nyob rau hauv qhuav ib puag ncig los yog tom qab nquag txav ntawm tib neeg.
Striped cuam tshuam: Kab rov tav lossis ntsug xim kab txaij yuav maj mam zuj zus ntxiv nrog rau cov khoom siv hluav taws xob zoo li qub.
Dead pixels lossis screen defects: Electrostatic paug tuaj yeem ua rau muaj kev puas tsuaj rau LED hlaws lossis ICs tsav tsheb, ua rau cov ntxaij vab tshaus dub hauv zos lossis xim thaiv qhov yuam kev ntawm lub vijtsam qiv LED.
(2) Suab txawv txav
Cov suab nrov tam sim no: Thaum lub sij hawm electrostatic tawm, lub vijtsam xauj tsev LED tej zaum yuav nrog me ntsis "crackling" suab, tshwj xeeb tshaj yog nyob ze ntawm lub hwj chim module.
Hu rau lub suab nrov: Thaum sib dhos lossis disassembling modules, lub suab hluav taws xob tuaj yeem tsim tawm thaum lub sijhawm sib cuag ntawm cov khoom sib nqus lossis cov hlua txuas.
(3) Cov kab mob ntawm lub cev
Plua plav tsub zuj zuj ntawm cov modules: hluav taws xob zoo li qub ua rau lub ntsej muag module ua kom them, nyiam cov plua plav tawm ntawm huab cua thiab tsim cov stains hauv zos.
Ribbon cable aging: Ntev-lub sij hawm electrostatic cuam tshuam yuav ua rau kom lub embrittlement ntawm ribbon cable rwb thaiv tsev txheej, ua rau tawg los yog discoloration nyob rau hauv lub LED xauj tsev screen.
II. Kev Ntsuas Cov Cuab Yeej: Quantifying Electrostatic Parameters
(1) Electrostatic Voltage Tester
Muab qhov ntsuas ntsuas ze rau ntawm qhov chaw ntawm lub vijtsam LED xauj tsev (qhov nrug tsawg dua lossis sib npaug li 1cm) thiab sau cov nqi hluav taws xob hluav taws xob. Tsom ntsoov rau qhov chaw sim ua rau muaj hluav taws xob zoo li qub, xws li cov npoo ntawm LED xauj npo modules, ribbon cable connectors, thiab fais fab modules.
(2) Oscilloscope
Txuas lub oscilloscope sojntsuam mus rau lub teeb liab input davhlau ya nyob twg los ntes cov yoj waveform thaum lub sij hawm electrostatic tawm. Saib xyuas lub waveform amplitude, zaus, thiab lub sijhawm ntawm lub vijtsam xauj tsev LED txhawm rau txheeb xyuas qhov cuam tshuam siv.
III. Environmental Investigation: Txheeb xyuas Electrostatic Risk Sources
(1) Humidity Control
Siv lub hygrometer los saib xyuas cov av noo ntawm LED xauj tsev ib puag ncig; tus txheeb ze humidity yuav tsum tau khaws cia ntawm 40% thiab 70%.
(2) Grounding System Check
Siv lub tshuab ntsuas ntau los ntsuas qhov kev tiv thaiv ntawm LED xauj npo lub hlau ncej thiab hauv av; nws yuav tsum yog<4Ω. Also, check if the power cord includes a grounding wire (yellow-green wire) and confirm that the socket's grounding terminal is effective. (3) Isolation of Personnel and Equipment
Saib xyuas seb cov neeg ua haujlwm puas hnav cov khoom tiv thaiv - cov hlua dab teg zoo li qub thiab paub meej tias cov hlua khi txuas nrog hauv av. Tsis tas li, xyuas seb cov cuab yeej tsheb thauj mus los (xws li cov tsheb thauj khoom thiab cov thawv ntim khoom) yog ua los ntawm cov khoom siv los tiv thaiv- zoo li qub.
IV. Ntev -Kev Saib Xyuas Lub Sij Hawm thiab Kev Tiv Thaiv
(1) Txhim kho Electrostatic Monitoring System
Siv electrostatic sensors ntawm qhov tseem ceeb ntawm lub vijtsam xauj tsev LED (xws li lub zog modules thiab cov ntawv tswj hwm) los saib xyuas qhov hluav taws xob hauv lub sijhawm thiab xa cov ntaub ntawv mus rau huab. Teem lub tswb ceeb toom; Lub suab ceeb toom thiab pom kev pom yuav tshwm sim thaum lub zog hluav taws xob electrostatic tshaj 800V.
(2) Kev tu tsis tu ncua
Ntxuav cov plua plav tawm ntawm qhov chaw ntawm lub vijtsam xauj tsev LED lub hlis twg los tiv thaiv electrostatic adsorption. Xyuas seb cov hlau hauv av puas xoob lossis corroded, thiab hloov nws yog tias tsim nyog. Muab kev cob qhia los tiv thaiv - zoo li qub rau cov neeg ua haujlwm txhawm rau txhawb kev paub txog cov txheej txheem ua haujlwm kom raug.
Hauv cov ntsiab lus, cov no yog qee txoj hauv kev los kuaj xyuas seb cov ntxaij vab tshaus LED puas cuam tshuam los ntawm kev cuam tshuam electrostatic. Los ntawm kev ua raws li cov kauj ruam no, peb tsis tuaj yeem nrhiav qhov chaw ntawm electrostatic cuam tshuam sai sai tab sis kuj tsim lub voj voog tsim txiaj ntawm "kev tiv thaiv- kuaj pom- kev ua kom zoo" hauv kev ua haujlwm txhua hnub thiab kev saib xyuas, kom ntseeg tau tias LED cov ntxaij vab tshaus nyob ruaj khov txawm tias nyob rau hauv siab - muaj kev pheej hmoo xws li ib puag ncig qhuav thiab tsis sib xws.
