当前位置>主页 > 期刊在线 > 电子工程 >

电子工程21年9期

关于 RGB 芯片解离失效探讨
谢冰璋
(晶宇光电(厦门)有限公司,福建 厦门 361101)

摘  要:随着 LED RGB 户外亮化工程的发展,户外显屏应用不断扩大。城市夜景变得更加璀璨多姿,也成为各城市宣传名片。大量 RGB 户外应用增添了城市色彩的同时,潜藏的问题也陆续暴发。终端应用在使用半年或 1 年后,发生个别 LED 灯珠不亮,影响整体视觉效果。暗灯是最常见失效模式,其中芯片受损是导致暗灯的主要因素。文章主要论述芯片失效产生的原理和检测方法,及如何提升芯片抗湿特性。


关键词:RGB;解离;水汽;Passivation;暗灯



DOI:10.19850/j.cnki.2096-4706.2021.09.010


中图分类号:TN312                                       文献标识码:A                                  文章编号:2096-4706(2021)09-0035-04


Discussion on Dissociation Failure of RGB Chip

XIE Bingzhang

(Episky Corporation(Xiamen)Ltd.,Xiamen 361101,China)

Abstract:With the development of LED RGB outdoor lighting project,the application of outdoor display screen is expanding. The night view of the city has become more dazzling and colorful,and it has also become the business card of various cities. While a large number of RGB outdoor applications add to the city’s colors,hidden problems are also emerging one after another. The terminal application has been used for more than half a year or more than a year,and individual LED lamp beads do not light up,which affects the overall visual effect. Dim light is the most common failure mode,in which chip damage is the main factor leading to dim light. This paper mainly discusses the principle and detection method of chip failure,and how to improve the chip’s anti-humidity characteristics.

Keywords:RGB;dissociation;moisture;Passivation;dim light


参考文献:

[1] 黄雪冰 .LED 封装的现状与发展趋势 [J]. 化工设计通讯, 2018,44(7):67.

[2] 曹骏 . 有机硅改性环氧树脂的制备及其性能研究 [D]. 杭 州:浙江大学,2017.

[3] ROTTER T,MISTELE D,STEMMER J. Photoinduced oxide film formation on n-type GaN surfaces using alkaline solutions [J]. Applied Physics Letters,2000,76:3923-3925.

[4] 王浩,钟澄,蒋程捷,等 .ITO 在 NaOH 溶液中阳极与 阴极极化过程的电化学行为 [J]. 物理化学学报,2009,25(5): 835-839.

[5] 郑洪,彭涛,舒畅,等 . 铝合金化学氧化膜盐雾试验后腐 蚀点评定方法研究 [J]. 装备环境工程,2021,18(4):70-76.

[6] 肖国伟,顾汉玉,黄锐琦 . 用于 LED 封装的等离子清洗 设备选型及工艺优化 [J]. 电子测试,2020(9):124-126.

[7] 张雪芹,尚忠,于建波 . 密封微电子器件真空烘烤工艺研 究 [J]. 电子与封装,2017,17(1):6-9.

[8] 杨丽珍,刘忠伟,桑利军,等 . 超薄薄膜的原子层沉积和 应用 [C]//TFC’17 全国薄膜技术学术研讨会 . 合肥:中国真空学 会薄膜专业委员会,2017:34.


作者简介:谢冰璋(1982—),男,汉族,福建龙岩人,中级 工程师,本科,研究方向:LED 芯片制程改善与产品性能提升。