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Shanghai, China

Ma J.,Kent State University | Ma J.,Shanghai SVA Optronics Co. | Ye X.,Shanghai SVA Optronics Co. | Jin B.,Shanghai SVA Optronics Co.
Displays | Year: 2011

Thin-film-transistor liquid crystal displays (TFT-LCDs) are the most popular flat panel displays now. Polarizer film is one of the most important components in the TFT-LCDs, which is a multi-layered complex film developed by the technology of stretching film with dichroic materials. In this paper, a systematic review about polarizer film used for TFT-LCDs is given. Structure, property, function and material of each layer and detailed explanations of compensation films as well as its types, especially for the twisted nematic (TN) mode LCD, are summarized. Manufacturing processes of the tri-acetyl cellulose (TAC) film and the polarizer film, attachment process of a polarizer film to a LCD panel and the key technologies in these processes are illustrated. Examples in practical applications and technology development trends in the future are also presented. © 2010 Elsevier B.V. All rights reserved.

Ma J.,CAS Changchun Institute of Optics and Fine Mechanics and Physics | Ma J.,Shanghai SVA Optronics Co. | Sun R.,Shanghai SVA Optronics Co. | Liu X.,Shanghai SVA Optronics Co. | And 3 more authors.
Displays | Year: 2012

Two types of display defects were found at special positions near the pixel indium tin oxide (ITO) edge in the multi-domain vertical alignment (MVA) mode liquid crystal display (LCD). Through simulated and experimental results, the formation mechanisms of these two types of display defects, the detailed configurations of liquid crystal (LC) orientations at the display defect regions and the principle to suppress the defect dark line were analyzed and discussed. It was further found that the occurrence of the dark line was related to the positioning accuracy of substrate assembly. The reason of the dark line occurrence related with the positioning accuracy and the manufacturing margin were provided here. © 2012 Elsevier B.V. All rights reserved.

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