發(fā)布時間：2018-01-04 11:33

  本文關(guān)鍵詞：TFT-LCD改善“斑點不良”的研究　出處：《液晶與顯示》2017年07期 　論文類型：期刊論文

  更多相關(guān)文章： 液晶顯示面板 斑點不良 黑矩陣 隔墊物

【摘要】：在壓力測試時,高分辨率TFT-LCD(Thin Film Transistor-Liquid Crystal Display)液晶面板會發(fā)生“斑點不良”。為了預(yù)防該不良的發(fā)生,本文分析了“斑點不良”的發(fā)生機理:壓力測試時,隔墊物PS(Photo Spacer)發(fā)生滑動,將陣列基板上透光區(qū)域的配向膜-聚酰亞胺PI(Polyimide)劃傷,而失去配向液晶能力,在暗態(tài)畫面下,劃痕處會發(fā)生漏光,形成斑點狀。本文對不同尺寸及分辨率的液晶面板進行了壓力測試,比較隔墊物擋墻、黑矩陣BM(Black Martrix)、隔墊物站位等不同因素對“斑點不良”的影響:隔墊物擋墻能有效阻擋隔墊物的滑動距離的23.6%,能有效降低“斑點不良”的漏光發(fā)生;當隔墊物滑動的距離未超出黑矩陣的遮擋范圍時,不可見“斑點不良”或很輕微;站在金屬塊(Pillow)上的隔墊物比沒有站在Pillow上的隔墊物滑動距離小約10%。最后以49in超高清UHD(Ultra High Definition)液晶面板為例,提出一種改善“斑點不良”的的設(shè)計方案:增加PS上下?lián)鯄υO(shè)計,降低PS滑動距離;增加BM寬度設(shè)計,保證PS邊緣到BM邊緣的距離大于PS滑動距離;降低PS的個數(shù),增加PS的大小設(shè)計降低透過率損失。該方案客戶驗證無“斑點不良”發(fā)生且透過率下降1.2%,說明此設(shè)計方案能夠有效地改善“斑點不良”。
[Abstract]:During a stress test. High resolution TFT-LCD(Thin Film Transistor-Liquid Crystal display. The LCD panel will have "speckles". To prevent the occurrence of this bad. In this paper, the occurrence mechanism of "speckle disorder" is analyzed: when the pressure is measured, the spacer PS(Photo Spacer slips. The poly-imide polyimide film was scratched on the transparent region of the array substrate, and lost the ability of alignment liquid crystal. In the dark picture, there would be light leakage in the scratches. In this paper, the pressure of liquid crystal panels with different sizes and resolutions was measured to compare the barrier wall, black matrix BM(Black martrix. The influence of different factors such as the position of spacer on "spot bad": the barrier wall can effectively block the sliding distance of the spacer and reduce the leakage of "spot bad" effectively; When the sliding distance of the spacer does not exceed the cover range of the black matrix, "speckle is not seen" or very slight; The sliding distance of the spacer on the metal block Pillow is about 10 times smaller than that on the Pillow. Finally, the ultra high definition UHD (UHD) is used for 49 min. Ultra High definition) liquid crystal panel as an example. This paper puts forward a design scheme to improve "speckle bad": increasing the design of PS upper and lower retaining wall and reducing the sliding distance of PS; When the width of BM is increased, the distance from PS edge to BM edge is larger than that of PS sliding distance. Reduce the number of PS, increase the size of PS design to reduce the loss of transmittance. It shows that this design scheme can effectively improve the "spot bad".
【作者單位】： 重慶京東方光電科技有限公司;
【分類號】：TN873.93
【正文快照】： (Chongqing Boe Optoelectronics Technology Co.,Ltd,Chongqing400700,China)TFT-LCD(Thin Film Transistor-LiquidCrystal Display)液晶面板目前主要的發(fā)展趨勢是高分辨率[1]和高透過率[2]。隨著TFT-LCD液晶面板的分辨率不斷提高,每英寸象素數(shù)量相應(yīng)增多,單個像素的尺寸就相，

本文編號：1378329