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Class 349/75 - For compensation of birefringence effects


Subclass of Class 349 - Liquid crystal cells, elements and systems
Definition: Subject matter wherein one or more of the plural cells compensates
No. of patents: 102
Last issue date: 01/17/2012


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NumberTitleIssue Date
8098350Display and view angle control element employed therein
There are provided a display that can block light so that a display on an image display device is invisible from a wide range of view angles in an oblique direction, and a view angle control element employed therein. In a narrow view angle state, a view angle contro...
01/17/2012
8064009Liquid crystal cell and liquid crystal display apparatus
A novel liquid crystal display apparatus is disclosed. The apparatus comprises a liquid crystal cell comprising a pair of substrates which are provided in mutually opposed manner and which has an electrode in at least either thereof, and a liquid crystal material su...
11/22/2011
8054411Volume photo-aligned retarder
This invention relates to a birefringent layer, wherein the direction of the optical axis varies along the thickness direction of the layer, comprising I) (i) a liquid crystal monomer or pre-polymer having polymerisa...
11/08/2011
8045098Liquid crystal display device
A LCD device includes first and second LCD panels stacked one on another. Each of the first and second LCD panels includes a pair of transparent substrates, a liquid crystal layer sandwiched therebetween, and a pair of polarizing films sandwiching therebetween the p...
10/25/2011
8018552Transmissive liquid crystal display device
The present invention provides a transmissive liquid crystal display device which is less in display characteristics fluctuations, bright in display images, high in contrast and less in viewing angle dependency and comprises a backlight, a polarizer, a second optica...
09/13/2011
7965352Liquid crystal display device to control viewing angle
A view angle controlling LCD comprises a first panel part that has a first group of electrodes and a first liquid crystal layer driven by a first vertical electric field. The first group of electrodes includes a pixel electrode and a common electrode to generate the...
06/21/2011
7961273Optical member with retardation control function and liquid crystal display
The invention provides a retardation-controlling optical member that includes a retardation layer obtained by aligning and fixing crosslinkable liquid crystal molecules and columnar structures disposed on the retardation layer. When a liquid crystal cell is formed b...
06/14/2011
7956956Liquid crystal display device
An ECB-mode liquid crystal display device having a pair of substrates 9 and 12, a liquid crystal layer 11, a pair of polarizing plates (1,3,5) (16,18,20) and at least one optically anisotropic layer 7 and/or 14, where...
06/07/2011
7777836Liquid crystal panel and liquid crystal display apparatus
There is provided a liquid crystal display apparatus having a high contrast ratio in an oblique direction and small color change depending upon a viewing angle. A liquid crystal panel according to an embodiment of the present invention includes: a liquid crys...
08/17/2010
7760292Liquid crystal display device to control viewing angle
A view angle controlling LCD comprises a first panel part that has a first group of electrodes and a first liquid crystal layer driven by a first vertical electric field. The first group of electrodes includes a pixel electrode and a common electrode to generate the...
07/20/2010
7705933Liquid crystal display apparatus and electronic apparatus
A liquid crystal display apparatus includes a viewing-angle controlling liquid crystal layer that, when in a horizontal alignment state, exhibits a slow axis that is parallel to a polarized-light transmitting or absorbing axis of a polarizing layer that is disposed ...
04/27/2010
7518674Optical compensator element and liquid crystal display using the same
Disclosed are an optical compensator element, which can realize switching between a wide angle of visibility and a narrow angle of visibility through a simple operation, and a liquid crystal display using the same. An optical compensation layer 4B′ comprisi...
04/14/2009
7426003Pixel structure and liquid crystal display panel having particular transition electrode
A pixel structure for being driven by a scan line and a data line is provided. The pixel structure includes an active device, a pixel electrode, an insulating layer, and a transition electrode. The active device is electrically connected to the scan line and the dat...
09/16/2008
7408600Liquid crystal display device
This invention offers a liquid crystal display device with which each of a plurality of observers can visually recognize each of two different images displayed on a single liquid crystal display panel respectively. The liquid crystal display device of this invention...
08/05/2008
7405785Transverse electric field active matrix liquid crystal display panel having particular optical compensation layer
A color filter substrate C includes an orientation film 56 provided on one surface of another glass substrate 10 and an optical compensation layer 35 provided on the other surface of the glass substrate 10 and formed from a plastic film. ...
07/29/2008
7400367Viewing angle control element, display device, and electronic apparatus
The invention provides a viewing angle control element capable of realizing high information concealment without damaging brightness of transmitted light and dynamically changing a viewing angle in accordance with need or no need of information concealment. The view...
07/15/2008
7372523Display apparatuses having layered liquid crystal displays
Display apparatuses are provided that includes a light source, a first liquid crystal display on the light source, and a second liquid crystal display on the first liquid crystal display. The first liquid crystal display is configured to allow a variable amount of l...
05/13/2008
7327345Interlaced MLA LCD STN driver
Liquid crystal display (LCD) systems and related methods to achieve reduced resistance of the connections between the display controller device and MLA common sub-groups or groups of signal lines of the display unit avoiding differences of contrast between adjacent ...
02/05/2008
7283114Systems and method for displaying images with reduced power consumption
A method and a system for displaying images are provided. In the method, a pixel is provided that includes a layer of ferroelectric material and a layer of liquid crystal material. A first electric field is momentarily applied to the pixel to electrically polarize t...
10/16/2007
7267849Compensator for liquid crystal display
A compensator element for a liquid crystal display is provided comprising at least one layer of negative biaxial burefringement material formed by at least one polycyclic organic compound. ...
09/11/2007
7257269Digital polarization filter
A method for simulating in a digital image the effect of a physical polarization filter is described, the digital image having a plurality of pixels (50) with color, by darkening (54) each of the plurality of pixels (52) having a cool color and ...
08/14/2007
7208194Method and machine for producing optical compensation sheet
A film sheet which has a polymer layer formed of a coating solution is drawn from a balk roll and transported toward a rubbing apparatus. Thereby, first and second blowers sequentially disposed respectively apply to the polymer layer an air of temperature 45±2° C....
04/24/2007
7180558DSTN display with electromagnetic shielding
The invention relates to a DSTN display with electromagnetic protection, comprising an active cell (1) and a passive cell (2), whereby the active cell (1) comprises electrodes (12, 13) and the passive cell (2) faces an observer of ...
02/20/2007
7166321Process for the preparation of an optical compensatory sheet comprising cellulose ester film, orientation layer, and optically anisotropic layer formed of liquid crystal molecules having a fixed alignment
An optical compensatory sheet comprises a cellulose ester film, an orientation layer and an optically anisotropic layer formed of liquid crystal molecules in this order. Alignment of the liquid crystal molecules is fixed. An alkaline solution is coated on a surface ...
01/23/2007
7165843Optical system with angular compensator
An electro-optical projection system includes a polarizer, a reflective light modulator, an analyzer, and a compensation element. The polarizer polarizes an illumination beam to form a polarized illumination beam. The reflective light modulator receives the polarize...
01/23/2007
7148934Easy-maintain rear projection television
A rear projection television includes a casing with a space therein and a plurality of modular units. A plurality of maintenance holes are formed through the casing to communicate with the space. The modular units are positioned in the space to correspond to the mai...
12/12/2006
7145611Seamless tiled display system
A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each section is configured to display a sectional image. One of the lens ...
12/05/2006
7139054Active matrix liquid crystal display panel having particular optical compensation layer
An active matrix liquid crystal display panel by which a good display characteristic can be obtained without suffering from gradation reversal over a wide visibility angle range. A liquid crystal layer 4 is formed such that the thickness thereof varies in acc...
11/21/2006
7110055Reflective type ferroelectric liquid crystal display and driving method thereof
The present invention discloses a reflective type ferroelectric liquid crystal display and a driving method thereof. The reflective type ferroelectric liquid crystal display comprises a display panel which is disposed between a polarization beam splitter and a mirro...
09/19/2006
7097306Projection device and liquid crystal panel unit for use in the projection device
A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plat...
08/29/2006
7088410Liquid crystal display device incorporating a phase difference plate capable of improving viewing angle dependence
A liquid crystal display device incorporates two phase difference plates stacked together and disposed between a liquid crystal display element and a pair of polarizers, the liquid crystal display element being formed by sandwiching a liquid crystal layer between a ...
08/08/2006
7029124Distortion control for a seamless tile display system
A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each section is configured to display a sectional image. One of the lens ...
04/18/2006
7027224Wave plate mounting
A compact mounting for a wave plate permits convenient rotational adjustment of the wave plate through an angle of at least one-half revolution to exploit asymmetry in the optical characteristics of the wave plate. ...
04/11/2006
7019804Liquid crystal cell with twist angle from 180 to 270 degrees and twisted optical compensating element
A liquid crystal display device has a liquid crystal cell, a liquid crystalline substance layer, a pair of polarizers, and an optical compensation element. The twist angle of the liquid crystal cell is set to 180 to 270 degrees. The optical compensation element has ...
03/28/2006
6937309LIQUID CRYSTAL DISPLAY/OPTICAL RETARDATION COMPENSATOR COMBINATION IN WHICH VARIATIONS IN THE DISPERSION OF LIGHT IN THE LIQUID CRYSTAL AND/OR IN THE COMPENSATOR MATERIALS MINIMIZE UNDESIRED SCREEN COLORATION
The liquid crystal display device is composed of at least one optical retardation compensator plate 2 (and 3) inserted between a liquid crystal display element 1 and polarizer plates 4 and 5. The liquid crystal display element 1...
08/30/2005
6933999Liquid crystal display device
In a normally black double cell, grey scale enhancement is obtained by dividing pixels in the driving cell into sub-pixels which are rotated preferably through 180° with respect to each other. ...
08/23/2005
6914647Electro-optical light modulator
An electrically drivable light modulator having liquid crystal layers, which are disposed one behind the other and are enclosed between transparent plates having a surface anisotropy that orients the molecules of the liquid crystals and having electrodes for generat...
07/05/2005
6912030Optical compensator and liquid crystal display I
The invention relates to an optical compensator for liquid crystal displays comprising: at least one O plate retarder (3, 3′), and at least one twisted A plate retarder (6, 6′) with a twist angle φ of more than 90°, and further relates to a liqui...
06/28/2005
6906763Liquid crystal display device and inspection method for a transparent substrate
A liquid display device of D-STN mode capable of suppressing a line-shaped ununiformity of brightness in displaying a dark appearance is presented. A displaying cell 1 and a compensation cell 21 are formed so that there is a difference of thickness of ...
06/14/2005
6903784Display assembly with contrast inversion including two superposed display devices
A second device (24) is mounted on a first device (22) formed of a liquid crystal (27) display cell (26) at the front of which is arranged a first linear polarizer (40), of a liquid crystal (29) optical valve (28) at ...
06/07/2005
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