81results about How to "Reduce dark state light leakage" patented technology

The invention discloses a liquid crystal display device and a manufacturing method thereof. The liquid crystal display device comprises a first substrate and a second substrate opposite to the first substrate. A nematic liquid crystal layer is arranged between the first substrate and the second substrate. The nematic liquid crystal layer comprises nematic liquid crystals and a polymer network. According to the liquid crystal display device, the nematic liquid crystal layer is arranged between the first substrate and the second substrate and comprises the nematic liquid crystals and the polymer network, the polymer network is formed by illumination and polymerization of functional monomers in a nematic liquid crystal mixture, the polymer network can reduce the scattering phenomenon caused when refractive indexes of the liquid crystals and polymers are not matched, the dark state light leakage phenomenon is greatly reduced, and therefore the contrast ratio is improved; meanwhile, no polymer protrusions are arranged on an alignment layer, dark state light leakage caused by polymer protrusions is avoided, and therefore the contrast ratio is improved.

The invention provides an array substrate and a liquid crystal display panel. The array substrate comprises data lines, scanning lines, shared electrode lines and pixels, and the plurality of data lines are distributed at intervals along the vertical direction. The plurality of scanning lines are distributed at intervals along the horizontal direction. The shared electrode lines are parallel to the data lines and located between the adjacent data lines. The plurality of pixels are distributed in an array, and each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel. Inthe pixels, shielding electrodes are arranged in a first area correspondingly close to the data lines, a second area close to the scanning lines, a third area where the shared electrode lines are located and a fourth area between the adjacent rows of pixels, and the setting density of the shielding electrodes corresponding to the first sub-pixels is smaller than that of the shielding electrodes corresponding to the third sub-pixels. By reducing the density of the shielding electrodes in the first sub-pixels, the dark state light leakage phenomenon of the liquid crystal display panel is reduced.

Embodiments of an optical compensator for a liquid crystal display is disclosed. One embodiment of the optical compensator includes an A-plate and a C-plate wherein:the retardation of the A-plate satisfies the following formula:0.644<R0(450) / R0(550)<1the retardation of the C-plate satisfies the following formula:1<Rth(450) / Rth(550)<1.35where R0(450) and R0(550) represent the retardation of the A-plate at wavelengths of 450 nm and 550 nm, respectively, and Rth(450) and Rth(550) are the values calculated by Rth=[[nx+ny] / 2−nz]×d (where nx, ny and nz represent the three-dimensional refractive indexes of the C-plate as the refractive indexes in the direction of the x-axis, y-axis and z-axis, respectively, and d represents the thickness of the C-plate) for the C-plate at a wavelength of 450 nm and 550 nm, respectively. Other embodiments are also included.

The invention discloses a liquid crystal display panel and a preparation method thereof. The liquid crystal display panel comprises a first substrate, wherein a first color resistance layer is configured on the first substrate; a second substrate, wherein the second substrate and the first substrate are arranged in a paired mode, and a second color resistance layer is arranged on the second substrate; and a polymer network liquid crystal layer, which is arranged between the first substrate and the second substrate, wherein the first color resistance layer comprises a plurality of first color sub-resistors, and the second color resistance layer comprises a plurality of second color sub-resistors which are respectively arranged corresponding to the plurality of first color sub-resistors in the first color resistance layer in color and position. When the polymer network liquid crystal is in a scattering mode, the absorption effect of the color films with different colors in the adjacent sub-pixels on scattered light of the adjacent sub-pixels is utilized, the dark state light leakage degree is reduced, and therefore the contrast ratio is improved.