Patent application number | Description | Published |
20110199561 | Liquid Crystal Display Device - The present invention provides a liquid crystal display device which can ensure visibility and decrease coloring regardless of the direction of the screen, even if the screen is viewed through an optical member having a polarization function, such as polarized sunglasses. In at least one embodiment, a liquid crystal display device includes: a liquid crystal cell; and a first polarizing element disposed at an observation surface side of the liquid crystal cell, and the liquid crystal display device further includes a second polarizing element disposed at the observation surface side of the first polarizing element. It is preferable that the liquid crystal display device further includes a protective plate disposed between the first polarizing element and the second polarizing element. | 08-18-2011 |
20120200811 | LIQUID-CRYSTAL DISPLAY DEVICE - The present invention provides a liquid-crystal display device that can achieve high contrast ratios in a wide range of viewing angles and reduce coloration during black display. The liquid-crystal display device according to the present invention includes a polarizer, a first quarter-wave plate adapted to satisfy nx>ny≧nz, a vertically aligned liquid crystal cell, a second quarter-wave plate provided with substantially the same Nz factor as the first quarter-wave plate and adapted to satisfy nx>ny≧nz, a birefringent layer adapted to satisfy nx08-09-2012 | |
20120206665 | THREE-DIMENSIONAL VIDEO RECOGNITION SYSTEM, VIDEO DISPLAY DEVICE AND ACTIVE SHUTTER GLASSES - The present invention is to provide a three-dimensional video recognition system, a video display device, and active shutter glasses (AS) in which, even when the observer's visual point and the inclination of the observer's face are changed, the reduction in the brightness of the screen can be suppressed, and in which a sufficient shutter effect can be obtained. The present invention provides a three-dimensional video recognition system that is featured by including a display device, a front plate, and AS glasses, and is featured in that each of the AS glasses includes a first λ/4 plate, a first linear polarizing element, a liquid crystal cell, and a second linear polarizing element in this order from the outer surface side, in that the display device includes a third linear polarizing element on an observation surface side of the display device, in that the front plate has a second λ/4 plate, and in that, when an angle formed between a transmission axis of the first linear polarizing element and an in-plane slow axis of the first λ/4 plate is defined as φ1, and when an angle formed between a transmission axis of the third linear polarizing element and an in-plane slow axis of the second λ/4 plate is defined as φ2, expressions of 40°≦φ1≦50° and of 40°≦φ2≦50°, or expressions of 130°≦φ1≦140° and of 130°≦φ2≦140° are satisfied, where φ1 and φ2 are measured as viewed from the side of the λ/4 plate and are measured in the counterclockwise direction taken as the positive direction with reference to the transmission axis of the linear polarizing element. | 08-16-2012 |
20130063670 | ACTIVE SHUTTER GLASSES AND A STEREOSCOPIC IMAGE PROJECTION SYSTEM - The present invention provides active shutter glasses and a stereoscopic image projection system that allow a stereoscopic image of excellent display quality to be viewed. The present invention provides active shutter glasses for a stereoscopic image projection system in which the active shutter glasses include a shutter section for the right eye and a shutter section for the left eye, the shutter section for the right eye and the shutter section for the left eye each include a liquid crystal cell, and when the glasses are worn, viewing angles of the shutter section for the right eye and the shutter section for the left eye each are wider on the right and left sides than on the upper and lower sides. | 03-14-2013 |
20130076997 | ACTIVE SHUTTER GLASSES, PASSIVE GLASSES, AND STEREOSCOPIC IMAGE PROJECTION SYSTEM - The present invention provides active shutter glasses, passive glasses, and a stereoscopic image projection system, with which a viewer wearing polarizing sunglasses can enjoy improved visibility. The active shutter glasses comprises: a shutter for a right eye; and a shutter for a left eye, wherein the shutters for a right eye and for a left eye each have a liquid crystal cell and a linearly polarizing element, the linearly polarizing element is provided in each shutter on an inner side than the liquid crystal cell is, the linearly polarizing element has a transmission axis direction set in the vertical direction when the glasses are worn. | 03-28-2013 |
20130083261 | ACTIVE SHUTTER GLASSES AND A STEREOSCOPIC IMAGE PROJECTION SYSTEM - The present invention provides active shutter glasses including shutters in which orientations of their components are freely determined, and provides a stereoscopic image projection system. The present invention provides active shutter glasses for a stereoscopic image projection system, the active shutter glasses comprising: a right-eye shutter; and a left-eye shutter, wherein the right-eye shutter and the left-eye shutter each include a liquid crystal layer and a linear polarizing element, at least one of the right-eye shutter and the left-eye shutter includes a layer adopted to change a vibration direction of polarized light, the linear polarizing element is provided at the outer side of the liquid crystal layer, and the layer adapted to change a vibration direction of polarized light is provided at the outer side of the linear polarizing element. | 04-04-2013 |
20130114027 | LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device that can achieve sufficient front contrast ratio and front white brightness at the same time. The present invention is a liquid crystal display device including a front polarizing plate, a liquid crystal cell, a back polarizing plate, and an optical element having polarization characteristics, which are arranged in the stated order, wherein the back polarizing plate has a lower contrast than the front polarizing plate, and there is substantially no air layer between the back polarizing plate and the optical element having polarization characteristics. | 05-09-2013 |
20130148053 | LIQUID CRYSTAL DISPLAY PANEL - A liquid crystal display panel is capable of displaying in a normally black mode. The liquid crystal display panel includes: a liquid crystal cell which includes a liquid crystal layer and a pair of substrates; a first polarizing plate provided on a rear surface side of the liquid crystal cell; a second polarizing plate provided on a viewer side of the liquid crystal cell; and an antireflection layer provided on a viewer side of the second polarizing plate, the antireflection layer having a moth-eye structure, wherein a transmission axis of the first polarizing plate is parallel to a vertical direction in a display plane, and a transmission axis of the second polarizing plate is parallel to a horizontal direction in the display plane. According to an embodiment of the present invention, a pale black state in oblique viewing angles is prevented. | 06-13-2013 |
20140152945 | LCD PANEL, ELECTRONIC DEVICE, AND METHOD FOR PRODUCING LCD PANEL - A liquid crystal display panel ( | 06-05-2014 |
20140168581 | LCD PANEL, ELECTRONIC DEVICE, AND METHOD FOR PRODUCING LCD PANEL - A liquid crystal display panel ( | 06-19-2014 |
20140218668 | LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device which enables costs to be reduced, excels in productivity, and enables a high contrast ratio over a wide viewing angle range to be realized. The present invention is a liquid crystal display device including a first polarizer, a second-type (nxny≧nz), a liquid crystal cell, a second λ/4 plate having an Nz coefficient different from the first λ/4, and a second polarizer in this order, wherein an in-plane slow axis of the first λ/4 plate forms generally 45 degrees as to an absorption axis of the first polarizer, an in-plane slow axis of the second λ/4 plate is generally orthogonal to the in-plane slow axis of the first λ/4 plate, an absorption axis of the second polarizer is orthogonal to the absorption axis of the first polarizer, an in-plane fast axis of the second-type birefringent layer is generally orthogonal to the absorption axis of the first polarizer, and black display is performed by aligning liquid crystal molecules within a liquid crystal layer in a manner generally perpendicular to substrate faces. | 08-07-2014 |
20140253853 | LIQUID CRYSTAL DISPLAY - This liquid crystal display device ( | 09-11-2014 |
20140368771 | LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device which can achieve cost reduction, excellent productivity, and a high contrast ratio within a wide viewing angle range. The liquid crystal display device of the present invention includes, in the order set forth, a first polarizer, a first λ/4 plate, a liquid crystal cell, a second λ/4 plate, a third Type-I birefringent layer, a Type-IV birefringent layer, and a second polarizer. An in-plane slow axis of the first λ/4 plate forms an angle of about 45° with an absorption axis of the first polarizer. An in-plane slow axis of the second λ/4 plate is substantially perpendicular to the in-plane slow axis of the first λ/4 plate. An absorption axis of the second polarizer is substantially perpendicular to the absorption axis of the first polarizer. An in-plane slow axis of the third Type-I birefringent layer is substantially parallel with the absorption axis of the second polarizer. The liquid crystal display device displays a black screen by aligning liquid crystal molecules in the liquid crystal layer in the direction substantially vertical to the substrate surface. | 12-18-2014 |
20140368774 | LIQUID-CRYSTAL DISPLAY PANEL AND LIQUID-CRYSTAL DISPLAY DEVICE - A liquid crystal display panel ( | 12-18-2014 |
20150029437 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device that can prevent light leakage in black images, has an improved viewing angle of white images, and can avoid an increase in the thickness and additional costs. The liquid crystal display device includes: a collimating backlight unit; and a liquid crystal display panel. The liquid crystal display panel includes: a pair of substrates; and a liquid crystal layer disposed between the substrates, and the liquid crystal layer includes a polymer dispersed liquid crystal. | 01-29-2015 |