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LCD Display Highly Refined

Representative electronic paper - electrophoretic display (EPD) has long been put into practical use as a flexible display. Moreover, this display screen is a memory type,LCD Display no reflection type of the backlight, no polarizer, so you can get bright, no color display. But there are problems with color display and video display. The LCD screen can achieve large-screen, high-precision, with a large color performance range can be achieved, as a high-quality display has been widely used. Moreover, the LCD screen manufacturing technology is very mature, not long before, China's output will become the first. But the liquid crystal is the liquid, LCD Display must be arranged in an orderly, so, with the development of thin and flexible, the LCD screen in the display quality of the stability of the problem.

 Moreover, the flexible liquid crystal display screen requires a flexible backlight. It is a localized dimming backlight system that uses a liquid crystal polymer composite film in a light guide plate for a backlight which can realize a thin flexible body and contributes to a high contrast and power saving. The liquid crystal and the polymer in the composite film have molecular orientation, LCD Display and can be expressed as light scattering or transparent by switching voltage.

 In addition, the local dimmer backlight according to the image automatically control the local backlight brightness, with reduced power consumption at the same time, improve the image contrast function. It is also possible to suppress the phenomenon of "blackening" of the black portion of the image. The voltage of the area where the image is displayed is "ON", the "light scattering state", LCD Display and the voltage in the other area is "OFF" and "transparent".

The schematic structure of the reflective flexible liquid crystal display panel is shown in Fig. The surface of the two substrates was coated with a polyimide film ("SE-4811" manufactured by Nissan Chemical Industries, Ltd.), and then heated at a temperature of 120C to be used as an alignment film for liquid crystal. The thickness of the liquid crystal cell was 2 m, and the liquid crystal material was filled in vacuum ("MLC-2038" manufactured by Merck & Co., USA). In order to achieve high contrast and wide viewing angle, LCD Display a biaxially stretched film, a circularly polarizing plate and a light diffusing plate are also used. Fig. 4 is an example showing the display of a flexible reflective liquid crystal display screen (photographed when the stainless steel substrate is bent).

The panel is made as follows. First, an ITO film (film resistance of 100? /?) Was formed at a low temperature on a dye-like polarizing plate, and a PVA-based adhesive was used, and a TAC (triacetylcellulose) film and a polarizing plate were bonded. Then, a 250 nm ultraviolet ray was used to irradiate the surface of the polarizing plate for 6 to 12 minutes to denature the surface, and the photo-alignment film was applied by spin coating. LCD Display The thickness of the liquid crystal cell was kept constant by using a partition wall of 5 m, a sealing pattern was formed using an ultraviolet-curing resin, and then the liquid crystal was injected again.

The future, the market not only requires flexibility, but also need to extend the "telescopic display." To achieve this kind of display, it is necessary to develop a component structure that does not require a substrate and can achieve high contrast display. LCD Display In this paper, the R & D personnel in the independent liquid crystal polymer composite membrane, free control with molecular orientation of the liquid crystal dispersion of the purpose of this, based on the UV pattern exposure of liquid crystal polymer phase separation of the study.


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