电子科学技术
電子科學技術
전자과학기술
Electronic Science & Technology
2014年
3期
354-359
,共6页
小点间距%超密屏%扫描屏%LED驱动芯片%暗线拖影%不均匀性
小點間距%超密屏%掃描屏%LED驅動芯片%暗線拖影%不均勻性
소점간거%초밀병%소묘병%LED구동심편%암선타영%불균균성
Fine Pitch%Fine Pitch Display%Time-multiplexing%LED driver IC%Dim line%Non-uniformity
小点间距显示屏灯板电子设计面临微小化的挑战，灯点间距的微缩导致电路板布线空间不足，必须采取多行扫设计。然而，多行扫设计的寄生效应导致小点间距产品的显示效果无法完美表现画面细节。本文的驱动方案针对低亮度，高灰度画面进行优化，克服小点间距屏测试中常出现的第一行扫偏暗、色偏、区块不均、渐层暗线等问题，更进一步解决LED坏点造成的十字架问题。
小點間距顯示屏燈闆電子設計麵臨微小化的挑戰，燈點間距的微縮導緻電路闆佈線空間不足，必鬚採取多行掃設計。然而，多行掃設計的寄生效應導緻小點間距產品的顯示效果無法完美錶現畫麵細節。本文的驅動方案針對低亮度，高灰度畫麵進行優化，剋服小點間距屏測試中常齣現的第一行掃偏暗、色偏、區塊不均、漸層暗線等問題，更進一步解決LED壞點造成的十字架問題。
소점간거현시병등판전자설계면림미소화적도전，등점간거적미축도치전로판포선공간불족，필수채취다행소설계。연이，다행소설계적기생효응도치소점간거산품적현시효과무법완미표현화면세절。본문적구동방안침대저량도，고회도화면진행우화，극복소점간거병측시중상출현적제일행소편암、색편、구괴불균、점층암선등문제，경진일보해결LED배점조성적십자가문제。
Fine pitch LED displays dominate LED China 2014. There are also challenges in electrical design, the minimization. Due to the pixel pitch shrinking, the PCB board is no longer enough for static design but time-multiplexing design. However, the side effect of time-multiplexing design make the pattern details not to be displayed perfectly. Macroblock presents the fine pitch solution, which optimized the display quality of low -brightness – rich - color images, properly eliminated the defects such as dim-line of first scan, color shift, non-uniformity and gradient dim-line, furthermore, solved the cross problem induced by failure LEDs.
