Abstract: The present invention relates to the field of color filters, in particular, to a non-absorbing polarization color filters and to high-brightness color liquid crystal display panel with improved image contrast employing non-absorbing polarization color filters and light recycling among neighboring subpixels. The disclosed invention represents a non-absorbing polarization color filter comprising the following elements: a rear broadband multilayer lossless polarizer, a front broadband multilayer lossless polarizer, and a color polarization rotator. The rear broadband multilayer lossless polarizer has a predefined-oriented transmission axis AB. Said front broadband multilayer lossless polarizer is located approximately in parallel with the rear broadband multilayer lossless polarizer, and has a transmission axis approximately parallel or approximately orthogonal with respect to transmission axis AB.

Abstract: A color liquid crystal display is provided comprising a front panel including at least one polarizer, a rear panel including at least one polarizer, liquid crystal placed between the front and rear panels, a reflective layer on the rear panel, and a matrix of color filters. The polarizer on the rear panel is an internal polarizer and placed before the matrix of color filters or between said matrix and the reflective layer. The combined thickness of all layers positioned between the matrix of color filters and the rear polarizer does not exceed 10 microns.

Abstract: A liquid crystal display with a touch panel is described. The liquid crystal display includes a front panel including an internal front polarizer, a liquid crystal layer, and a rear panel including a rear polarizer. A touch transparent panel is secured to the front surface of the liquid crystal display.

Abstract: A color-correcting polarizer is provided comprising a polarizer layer and at least one discotic film layer. The discotic film layer is optically transparent within the range of visible wavelength. The discotic film layer works as a polarizer in the wavelength ranges at least from 380 to 500 nm and/or from 600 to 780 nm. A liquid crystal cell comprising the color correcting polarizer is also disclosed.

Abstract: A simple, reliable and cost-effective super-twisted nematic liquid crystal display is disclosed. The liquid crystal display is suitable for application in all portable electronic devices due to the reliable and simple design employing a thin crystal film polarizer and is particularly suitable for outdoor display applications due to its increased environmental robustness. The thin crystal film polarizer also increases the viewing characteristics of the liquid crystal display and provides additional advantages. The disclosed liquid crystal display includes a front and rear polarizer and a super-twisted nematic liquid crystal layer, wherein the liquid crystal layer has a twist angle from about 230° to about 250°. The front and rear transmission axes of the polarizers are angularly displaced by about 70° to about 86° relative to each other.

Abstract: A liquid crystal display is provided which comprises a front panel comprising a front alignment layer having an alignment direction, a rear panel comprising a rear alignment layer having an alignment direction, and a liquid crystal layer between the front and rear alignment layers. The liquid crystal layer has a rotational twist angle of about 90° and a pre-tilt angle of not more then 2°. The alignment, material and thickness of the liquid crystal layer are such that at the mid-point of the rotational twist, the direction of liquid crystal directors coincide with an off-normal viewing direction of the liquid crystal display.

Abstract: A color-correcting polarizer is provided comprising a polarizer layer and at least one discotic film layer. The discotic film layer is optically transparent within the range of visible wavelength. The discotic film layer works as a polarizer in the wavelength ranges at least from 380 to 500 nm and/or from 600 to 780 nm. A liquid crystal cell comprising the color correcting polarizer is also disclosed.

Abstract: A color liquid crystal display is provided comprising a front panel including at least one polarizer, a rear panel including at least one polarizer, liquid crystal placed between the front and rear panels, a reflective layer on the rear panel, and a matrix of color filters. The polarizer on the rear panel is an internal polarizer and placed before the matrix of color filters or between said matrix and the reflective layer. The combined thickness of all layers positioned between the matrix of color filters and the rear polarizer does not exceed 10 microns.

Abstract: A liquid crystal display with a touch panel is described. The liquid crystal display includes a front panel including an internal front polarizer, a liquid crystal layer, and a rear panel including a rear polarizer. A touch transparent panel is secured to the front surface of the liquid crystal display.

Abstract: A liquid crystal shutter is provided comprising at least two liquid crystal cells and at least three polarizers. Each of the liquid crystal cells contains a plurality of layers between two substrates and is disposed between two adjacent polarizers. The adjacent two liquid crystal cells have substantially equal absolute values and opposite directions of twist angles. The liquid crystal shutter of the invention substantially increases the viewing angle and the contrast ratio at large viewing angles, provides a symmetrical dependence of the contrast ratio on the viewing angle, and decreases the switching time as well as the driving voltages. The shutter provides substantially improved angular characteristics, high contrast ratio, good transparency in the light state, and a fast switching time.

Abstract: A non-polarizing, Bragg-reflecting liquid crystal display is provided including a first and second substrate, liquid crystal material located between the first substrate and the second substrate. A fiber-optic faceplate may function as a first surface. Alternatively, a fiber-optic faceplate may be located on the side of the first substrate opposite from the liquid crystal layer. The fiber-optic faceplate may include optical fibers that extend between a front face and a rear face and fiber cladding materials located between the optical fibers. The fiber cladding material may be further opaquely masked on the front face.

Abstract: A reflective display comprises a pair of substrates and a holographic polymer dispersed cholesteric liquid crystal (HPDCLC) material formed between the substrates. The holographic polymer dispersed cholesteric liquid crystal material comprises a holographic polymer dispersed liquid crystal material and a cholesteric liquid crystal material. These two materials reflect one or more different intrinsic colors such that individual cells of the display can reflect one or more different intrinsic colors. The cells can comprise more than two layers, with each layer being reflective of a different intrinsic color. The cells in such embodiments can reflect three different intrinsic peak wavelengths and one or more intrinsic colors, enabling the display to reflect all colors.

Abstract: A full-color image capture system includes a color separation element and a single image sensor array. The color separation element can be operated in either a light reflective (mirror) mode in which selected intrinsic colors are reflected onto the image sensor array, or a light transmissive (filter) mode in which selected colors are transmitted to produce subtractive primary color images. The color separation element can be formed of holographic polymer dispersed liquid crystal materials that reflect light of selected intrinsic colors. The color separation element can include three holographic polymer dispersed liquid crystal material layers so that three different intrinsic colors can be selectively reflected or transmitted onto the image sensor to provide a full-color image.

Abstract: A holographically formed reflective display includes first and second substrates, a liquid crystal material located between the first and second substrates and a plurality of anisotropic polymer sheets separating the liquid crystal material into a plurality of liquid crystal material regions. The anisotropic polymer sheets reduce haze in the display and operates in the reverse mode when viewed from various viewing angles. The holographically formed reflective display may be used to form a color liquid crystal display and a color projection system.

Abstract: A paper-white reflective display that has improved photopic white reflectance, a high contrast, a lack of haze or opaqueness when viewed from various viewing angles and lower drive voltages. The paper-white reflective display includes first and second substrates, a plurality of groups of liquid crystal and polymer layers located between the first and second substrates, each of the plurality of groups of liquid crystal and polymer layers being reflective of different wavelengths of light and a voltage source connected between the first and second substrates that selectively applies a voltage to all of the liquid crystal and polymer layers.

Abstract: A compensating layer for an active matrix liquid crystal display where the compensating layer has optical axis oriented according to the orientation of the liquid crystal cell directors at a particular state. The compensating layer results in a very large usable viewing volume without sacrificing display efficiency when compared to other wide angle viewing techniques.

Abstract: A transmissive, backlit color twisted-nematic or super-twisted-nematic liquid crystal display employing a front fiber-optic faceplate or optical equivalent as a front retaining element of a liquid crystal cell that increases viewing angle between the display and a viewer while minimizing or eliminating undesirable variations in luminance, contrast ratio and chromaticity is described. In particular, the fiber-optic faceplate or optical equivalent includes cylindrical optical features and interstitial cladding material. The interstitial cladding material may include an opaque mask blocking layer to prevent the interstitial apertures from diffracting off-axis light into an observer's viewing cone. Further, the interstitial cladding material may be opaque.

Abstract: Methods for making plates which have columnar features approximately in the direction of light propagation which are capable of total internal reflection, a controllable numeric aperture (NA) at input and output surfaces, rotational azimuthal averaging and translation of the object plane from a back surface of the plate to a front surface of the plate and are optical equivalent of a FOFP. These plates are made from a range of materials including a variety of monomer or polymer networks. The resultant plates contain adjacent areas with differing refractive indices which result in a substrate containing a plurality of cylindrical features whose boundaries are defined by a discontinuity of refractive indices wherein the index of refraction within the cylindrical features is greater than the index of refraction at the boundaries and external to the cylindrical features.

Abstract: A broadband reflective display has improved reflectivity as well as a lack of haze or opaqueness when viewed from various viewing angles, a reduced drive voltage compared to conventional devices and an improved peak photopic reflectance. The broadband reflective display includes a plurality of pairs of substrates, a plurality of groups of alternating liquid crystal and polymer layers formed between each of the pairs of substrates, each of the groups of liquid crystal and polymer layers being reflective of different wavelengths of light.

Abstract: A transmissive, backlit color twisted-nematic or super-twisted-nematic liquid crystal display employing a front fiber-optic faceplate or optical equivalent as a front retaining element of a liquid crystal cell that increases viewing angle between the display and a viewer while minimizing or eliminating undesirable variations in luminance, contrast ratio and chromaticity is described. The fiber-optic faceplate or optical equivalent includes cylindrical optical features and interstitial cladding material of greater optical index than the cylindrical optical features. The interstitial cladding material may include an opaque mask blocking layer to prevent the interstitial apertures from diffracting off-axis light into an observer's viewing cone.