P‐200: Late‐News Poster: An Evaluation of the External Coupling Noise Causing Abnormal Display in Mobile Display

An external noise coupled into the power net of mobile driver IC can reveal as flicker or weak horizontal fluctuation in the display. This is a kind of conducted EMS study in electronics. Though conducted EMS for IC has been studied for several decades, conducted EMS dedicated to mobile display has...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2018-05, Vol.49 (1), p.1418-1420
Main Authors: Kim, Sang Kook, Kim, Jong Rea, Moon, Kyoung Hwan, Choi, Yun Hee, Choe, Won Jun
Format: Article
Language:English
Subjects:
Conducted EMS
Flicker
Mobile Display
Noise
Power amplifiers
Power Net
Signal generators
Variations
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Summary:An external noise coupled into the power net of mobile driver IC can reveal as flicker or weak horizontal fluctuation in the display. This is a kind of conducted EMS study in electronics. Though conducted EMS for IC has been studied for several decades, conducted EMS dedicated to mobile display has been rarely researched. In the present paper, we find such noise causing abnormal display using noise injection system composed of CDN, power amplifier, and signal generator. Furthermore, we evaluate the noise at the IC input by simulation for identifying its effectiveness on the operation of driver IC. Based on this evaluation result, IC makers can simulate the abnormal analog output which may be visible in mobile display.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.12457