57.5: Optimized Compensation Film for Automotive Display with Wide Viewing Angle

Abstract

Wide viewing angle is a critical optical specification for liquid crystal displays (LCDs), particularly in automotive displays. We proposed an optimized compensation film which consists of a biaxial positive B film and a negative B film to improve the viewing angle of LCDs with Super Fine TFT (SFT) mode. Under optimized retardations, minimum contrast ratio in area A can tremendously reach 0.59 times of perpendicular contrast ratio which provides excellent viewing characteristics based on German OEM specification.

Viewing Direction-Tunable Light Control Using Liquid Crystal Film for Simultaneous Implementation of Automotive Display Visibility and Safety

“…They are placed in cockpits in the form of clusters, center information displays, and codriver displays (CDDs), and have been integrated as large displays. In addition, their mounting areas have expanded from interior regions to window and exterior regions. − In addition to the change in the shape of the displays, there are numerous demands for the expansion of their functions, such as providing simple driving and traffic information, in addition to entertainment, e.g., watching movies, playing games, and shopping, particularly through the CDD panel. − Nevertheless, the implementation for providing both information and entertainment in automobiles is limited due to the absence of technologies that conform to legal regulations for safety, which prohibit the viewing of videos in a driving car. Therefore, technologies that are capable of providing convenience to occupants, while ensuring safety by preventing driver distractions, are required.…”

65‐3: Viewing Angle Control through Electrically‐Induced Effective Out‐of‐Plane Retardation Differences in Automotive Displays

“…They are placed in cockpits in the form of clusters, center information displays, and co-driver displays (CDD), and have been integrated as large displays; their mounting areas have expanded from interior parts to window and exterior parts [1][2][3][4][5]. In addition to the change in the shape of the displays, there are many demands for the expansion of their functions such as providing simple driving and traffic information to providing entertainment such as watching movies, playing games, and shopping, particularly through the CDD panel [6][7][8][9][10]. Nevertheless, the implementation for providing both information and entertainment through cars has been limited owing to the absence of technologies for responding to legal regulations for safety, which prohibit watching videos in a driving car.…”