An untreated polarizer layer which inherently exhibits liquid crystal alignment-promoting characteristics is placed on an untreated front and/or rear substrate and respective electrode layer in contact with the liquid crystal so that the polarizer layer can serve the dual function of polarizing and liquid crystal alignment means in the display, thereby simplifying display construction. If desired, the polarizer layer itself may be rubbed or otherwise mechanically treated in situ on the substrate to selectively alter its liquid crystal alignment properties. Further simplification of the display is achieved by combining the rear electrode, associated rear polarizer and liquid crystal alignment means, and reflector together in the form of a reflective metallic electrode member having a transparent, dual functioning polarizer-alignment layer on the inner surface adjacent and in contact with the liquid crystal layer of the display. A reduction in the number of layers in the display sandwich from ten to only seven is possible with the invention. A novel polarizer-alignment layer useful in simplifying the display construction is made of cyanoethylated polyvinyl alcohol or butyrate.
To provide a transflective liquid crystal display device which allows bright display even in a transmission mode and a method for manufacturing the same.A liquid crystal display device of the present invention has a liquid crystal layer 4 interposed between an upper substrate 1 and a lower substrate 2 disposed opposite to each other, a pair of polarizing layers (a polarizing plate 17 and a polarizing layer 26) provided above and below the liquid crystal layer 4, and reflective layers 21 partially provided within respective dots. The polarizing layer 26 is formed above electrode layers 25 provided on the inner surface of the lower substrate 2 in order to apply voltage to the liquid crystal layer 4. The polarizing layer 26 is also formed further towards the inside than a sealing material 5.
A liquid crystal display capable of improving the brightness without depending on the aperture ratio. By setting a lower polarization plate between an array substrate and a color filter substrate, the light reflected from a metal film formed on the array substrate can directly return to a light guide plate. Therefore, the light recycling efficiency is improved and the brightness of the liquid crystal display is improved.
A liquid crystal display capable of improving the brightness without depending on the aperture ratio. By setting a lower polarization plate between an array substrate and a color filter substrate, the light reflected from a metal film formed on the array substrate can directly return to a light guide plate. Therefore, the light recycling efficiency is improved and the brightness of the liquid crystal display is improved.
A liquid crystal display includes at least one polarizer located interior or internally of substrates of the display. In certain embodiments, the polarizer may be spin-coated onto the interior of one of the substrates, preferably the passive substrate of the display. Such a polarizer may also be located interior of color filters on the copassive substrate. Thus, light being transmitted through the display proceeds through the front polarizer prior to being de-polarized by the color filters. The result is improved contrast ratios in the display due to the minimization of the de-polarizing of color filters. In certain embodiments, the internal polarizer(s) may be photo-patternable by way of ultraviolet photo-imaging.
A liquid crystal display capable of improving the brightness without depending on the aperture ratio. By setting a lower polarization plate between an array substrate and a color filter substrate, the light reflected from a metal film formed on the array substrate can directly return to a light guide plate. Therefore, the light recycling efficiency is improved and the brightness of the liquid crystal display is improved.
