| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 349102000 | With particular non-zero angle between polarization axis and compensator optical axis | 29 |
| 20090033839 | RETARDATION FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING IT - Provided is a retardation film comprising a polymer film, and, disposed thereon, an optically-anisotropic layer, of which thickness is equal to or less than 5 μm, of which in-plane retardation at a wavelength of 550 nm, Re(550), is from 0 to 10 nm, and of which thickness-direction retardation at the same wavelength, Rth(550), is from 250 to 450 nm; and satisfying the following formula: 1.00≦Rth(450)/Rth(550)≦1.07 or 1.04≦Rth(450)/Rth(550)≦1.09. | 02-05-2009 |
| 20100026940 | METHOD FOR PRODUCING OPTICAL FILM, OPTICAL FILM, POLARIZER, OPTICAL COMPENSATORY FILM, ANTIREFLECTION FILM AND LIQUID CRYSTAL DISPLAY DEVICE - A method for producing an optical film comprising leading a melt of a composition containing a thermoplastic resin to pass between a first nip-pressing surface and a second nip-pressing surface of a nip-pressing unit whereby the melt is continuously nippressed therebetween to form a film, wherein the nip-pressing unit applies a pressure of from 20 to 500 MPa to the melt, and the first nip-pressing surface moves at a higher speed than the second nip-pressing surface. | 02-04-2010 |
| 20100033656 | LIQUID CRYSTAL DISPLAY - The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of −10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (dΔn) of 0.24-0.27 μm, the phase compensation film has a phase compensation function of λ/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line. | 02-11-2010 |
| 20100053511 | LIQUID CRYSTAL DISPLAY DEVICE - The invention relates to a liquid crystal display device comprising a retardation layer wherein an in-plane slow axis of the retardation layer is within the direction of 90±40 degrees relative to to an absorption axis of the polarizing layer disposed at a closer position to the retardation layer; Re(550) meets following relation, 25 nm≦Re(550)≦230 nm; R[40°] of the retardation layer which is measured for incident light in a direction tilted by 40 degrees toward the tilt direction of the retardation layer relative to the normal line of the retardation layer meets following relation, 0 nm≦R[40°]≦300 nm; and R[+40°] of the retardation layer and retardation R[−40°] of the retardation layer meet following relation, 1| 03-04-2010 | |
| 20100149461 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device uses a first quarter-wave retardation film and a hybrid aligned nematic film to reduce light leakage in dark state for reaching high contrast ratio, and uses multiple-gamma IC to provide different gamma-curve signals for pixels of different colors to solve color shift problem. In addition, the liquid crystal display device may use a second quarter-wave retardation film to reduce light leakage when viewed in a wide angle so as to further provide higher contrast ratio. | 06-17-2010 |
| 20100149462 | DISPLAY APPARATUS - A display apparatus includes a liquid crystal element that has a liquid crystal layer sealed in a space between a first substrate and a second substrate arranged face to face, a protective plate that is disposed so that the first substrate intervenes between the protective plate and the second substrate, a first polarizing plate that is disposed between the protective plate and the first substrate to be in close contact with the protective plate, and a first quarter-wavelength retardation plate that is disposed between the first substrate and the first polarizing plate to be in close contact with the first polarizing plate. The protective plate is greater in area than the first substrate. The first polarizing plate has an absorption axis and the first quarter-wavelength retardation plate has a slow axis in a direction intersecting with the absorption axis of the first polarizing plate at an angle of 45°. | 06-17-2010 |
| 20100157209 | LIQUID CRYSTAL DISPLAY HAVING IMPROVED RETARDATION FILM - A liquid crystal display having improved retardation plate is described. In the liquid crystal display, at least one of two panel plates has a polarizer placed on an outer side which is opposite to a liquid crystal layer and a quarter wavelength retardation plate between a substrate glass and the polarizer. The quarter wavelength retardation plate is composed of two retardation films including a half wavelength and a quarter wavelength retardation film. A slow axis of a half λ film which is adjacent to the polarizer makes an angle of Θ1 with a transmissive axis of the polarizer and that of a quarter λ film which is adjacent to the substrate glass makes an angle of Θ2 where Θ2=2×Θ1±45 degree. The retardation films are single-axial films. The specific angle Θ1 is one of degree values (15, 75, 105, and 165). In a transmissive type liquid crystal display, a structure of the other panel plate is similar to that of one panel plate and combination to the values (Θ1, Θ2, Θ3, Θ4) is one selected from the group consisting of combinations (15, 75, 165, 105), (75, 15, 105, 165), (105, 165, 75, 15), and (165, 105, 15, 75). | 06-24-2010 |
| 20100201924 | LIQUID CRYSTAL DISPLAY - A normally-black mode liquid crystal display includes a first and a second transparent substrate facing to each other, a liquid crystal layer, a first and a second polarizer, a first and a second half wave plate, and a first and a second positive C plate. The liquid crystal layer is interposed between the first and the second transparent substrate. The first polarizer is disposed on a side of the first transparent substrate opposite the liquid crystal layer, while the second polarizer is disposed on a side of the second transparent substrate opposite the liquid crystal layer. The first half wave plate is provided between the first transparent substrate and the first polarizer, and the second half wave plate is provided between the second transparent substrate and the second polarizer. The first positive C plate is disposed between the first half wave plate and the first transparent substrate, and the second positive C plate is disposed between the second half wave plate and the second transparent substrate. | 08-12-2010 |
| 20100208177 | LAMINATED OPTICAL FILM, LIQUID CRYSTAL PANEL, AND LIQUID CRYSTAL DISPLAY APPARATUS - The present invention provides a laminated optical film capable of contributing to thinning of each of a liquid crystal panel and a liquid crystal display apparatus and of simplifying its manufacturing steps, and a method of manufacturing the laminated optical film. The laminated optical film is used in a liquid crystal display apparatus and arranged on a viewer side of a liquid crystal cell. The laminated optical film includes: a polarizer; and a retardation layer which is arranged on one side of the polarizer, has a refractive index ellipsoid showing a relationship of nx>ny=nz, and has an in-plane retardation value Re[590] of 90 to 190 nm. An angle formed between an absorption axis of the polarizer and a slow axis of the retardation layer is 5 to 85°. The retardation layer is formed of a liquid crystal material, and the retardation layer is arranged to be closer to the viewer side than the polarizer is. | 08-19-2010 |
| 20100277676 | OPTICAL FILM AND LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY USING THE SAME - An optical film for a multi-domain VA mode liquid crystal cell, capable of improving a luminance of white display at a low cost without reducing a display quality. The optical film | 11-04-2010 |
| 20110001908 | LIQUID-CRYSTAL DISPLAY DEVICE - A liquid-crystal display device comprising a liquid-crystal cell, a first polarizing element and a second polarizing element disposed on either side of the liquid-crystal cell respectively, a first retardation layer between the first polarizing element and the liquid-crystal cell, and a second retardation layer between the second polarizing element and the liquid-crystal cell, wherein a transmission axis of the first polarizing element is perpendicular to the slow axis of the first retardation layer; and a transmission axis of the second polarizing element is parallel to the slow axis of the second retardation layer; and the first retardation layer and the second retardation layer satisfy the formula (1) 0 nm<ΔRe | 01-06-2011 |
| 20120188492 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device that has a higher contrast ratio in a wide viewing angle and that can be easily produced at low cost. The liquid crystal display device may include polarizers and multiple birefringent layers. A first birefringent layer (I) can have an in-plane slow axis forming an angle of about 45° with an absorption axis of the first polarizer; the second birefringent layer (I) can have an in-plane slow axis substantially orthogonal to the in-plane slow axis of the first birefringent layer (I). | 07-26-2012 |
| 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 nx| 08-09-2012 | |
| 20120327336 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - Disclosed is an organic light emitting display device to prevent deterioration of visibility caused by reflection of incident light and color transition at high viewing angle, and improve transmittance, the organic light emitting display device includes an organic light emitting display panel, and an antireflective member adhered to an outer surface of the organic light emitting display panel, the antireflective member including a reactive liquid crystal layer and a polarizer film which are laminated in this order, wherein the reactive liquid crystal layer has a λ/4 retardation with respect to a transmitted light of the polarizer film. | 12-27-2012 |
| 20130107177 | SELF-FOCUSING LIQUID CRYSTAL CELL AND CORRESPONDING LCD | 05-02-2013 |
| 20130258256 | DISPLAY APPARATUS - A display apparatus according to an exemplary embodiment of the present invention includes first and second polarization plates, first and second phase delay films, and a liquid crystal display panel. A first polarization plate has a first polarization axis. A second polarization plate faces the first polarization plate and has a second polarization axis forming an angle about 85 degrees to 95 degrees with respect to the first polarization axis. A first phase delay film is disposed between the first and second polarization films and has a third polarization axis forming an angle about 40 degrees to 50 degrees with respect to the second polarization plate. A second phase delay film is disposed between the second polarization plate and the first phase delay film, and has a fourth polarization axis forming an angle about −5 degrees to 5 degree with respect to the third polarization axis. | 10-03-2013 |
| 20140092349 | TN-MODE LIQUID CRYSTAL DISPLAY DEVICE - A TN-mode liquid crystal display device, which exhibits reduced grayscale inversion and improved white luminance, including: in sequence, a first polarizer, a first retardation film, a first liquid crystal cell substrate, a TN-mode liquid crystal layer, a second liquid crystal cell substrate, a second retardation film, and a second polarizer, wherein the absorption axis of the first polarizer is orthogonal to the absorption axis of the second polarizer, the slow axis of the first retardation film tilts by about 45° from the absorption axis of the first polarizer, the slow axis of the second retardation film tilts by about 135° from the absorption axis of the second polarizer, the slow axis of the first retardation film is orthogonal to the slow axis of the second retardation film, the first retardation film and the second retardation film have the same Re(550), and the first retardation film has a Re(550) of 5≦Re(550)≦55. | 04-03-2014 |
| 20140139790 | Compensation system and liquid crystal display apparatus for liquid crystal panel - The present invention discloses a compensation system and a liquid crystal display apparatus used for a liquid crystal panel. The compensation system comprises a first biaxial retardation film and a second biaxial retardation film respectively disposed on either side of the liquid crystal panel. An in-plane retardation value of the first biaxial retardation film at a wavelength of 550 nm is Ro | 05-22-2014 |
| 20140160407 | DISPLAY PANEL AND DISPLAY APPARATUS HAVING THE DISPLAY PANEL - The present application discloses a display panel, comprising: a first substrate, a second substrate, and a blue phase liquid crystal layer interposed between the first substrate and the second substrate. The first substrate and the second substrate are adapted to generate an electric field in a first direction perpendicular to the display panel. An optical path diverting device is provided between the first substrate and the second substrate, the optical path diverting device is configured so that a light entering the blue phase liquid crystal layer in the first direction from the first substrate is diverted to propagate in the blue phase liquid crystal layer in a second direction parallel to the display panel, and then the light propagating in the second direction is diverted to pass through the blue phase liquid crystal layer and exit from the second substrate in the first direction. According to the present invention, by providing an optical path diverting device in the liquid crystal cell, the display panel can perform normal display even under a vertical electric field, and thus solves the problem that the driving voltage is too large by using a lateral electric field. | 06-12-2014 |
| 20140176882 | DISPLAY DEVICE - A display device comprises a VA liquid crystal display unit as well as a front side polarizer and a rear side polarizer arranged respectively at both side of the VA liquid crystal display unit; wherein the VA liquid crystal display unit has an optical path difference Δnd of 324.3 nm to 305.8 nm at the wavelength of 550 nm; the front side polarizer is arranged at a side in the light-exiting direction of the VA liquid crystal unit; one of the front side polarizer and the rear side polarizer includes the biaxial compensation film, which has an in-plane delay Ro of 50.4-78 nm at the wavelength of 550 nm and a thickness direction delay Rth-b of 168-260 nm at the wavelength of 550 nm. The amount of light leakage is significantly reduced with the contrast close to the horizontal viewing angle obviously increased and the display effect further improved. | 06-26-2014 |
| 20140192300 | Compensation System for Liquid Crystal Panel and Liquid Crystal Display Device - The present invention provides a compensation system for liquid crystal panel and liquid crystal display device. The compensation system includes first biaxial compensation film and second biaxial compensation film, disposed on two sides of liquid crystal panel respectively, first biaxial compensation film having planar compensation value Ro1 for incident light of 550 nm wavelength and compensation value Rth1 along thickness direction, second biaxial compensation film having planar compensation value Ro2 for incident light of 550 nm wavelength and compensation value Rth2 along thickness direction; wherein 15 nm≦Ro1≦94 nm; 35 nm≦Rth1≦214 nm; 35 nm≦Rth1≦214 nm; 14 nm≦Ro2≦101 nm; Y1≦Rth2≦Y2; Y1=0.004302×Rth1 | 07-10-2014 |
| 20140204318 | LCD DEVICE AND METHOD FOR ARRANGING POLARIZERS OF THE LCD DEVICE - A liquid crystal display (LCD) device includes an LCD panel, a first polarizer arranged on a first side of the LCD panel, a second polarizer arranged on a second side of the LCD panel, and a λ/2 wave plate arranged between the first polarizer and the second polarizer. | 07-24-2014 |
| 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 |
| 20140218669 | DISPLAY PANEL AND DISPLAY DEVICE - A display panel and a display device are disclosed. The display panel comprises a lower substrate, an upper substrate and a liquid crystal layer disposed between the upper substrate and the lower substrate, a lower polarizer is disposed at a light incident side of the lower substrate, an upper polarizer is disposed at a light exiting side of the upper substrate. The display panel further comprises a compensation layer disposed between the upper substrate and the liquid crystal layer and configured for converting a polarization direction of light exiting the upper substrate to the same as the polarization direction of light before incident on the lower substrate. | 08-07-2014 |
| 20140327863 | LIQUID CRYSTAL DISPLAY DEVICE - A VA-mode LCD device of four domains or less includes a first polarizing film; a first retardation layer; a second retardation layer; a liquid crystal layer; a third retardation layer; and a second polarizing film, wherein the first retardation layer has Re (550) of 190 to 260 nm, and Rth (550) of 80 to 130 nm, a slow axis of the first retardation layer and the absorption axis of the first polarizing film define an angle of 45°, the absolute value of a Re (550) of the second retardation layer is not larger than 10 nm, while a Rth (550) of the second retardation layer is 150 to 350 nm, a Re (550) of the third retardation layer is 190 to 260 nm, while a Rth (550) of the third retardation layer is −80 to −130 nm, and a Δnd of the liquid crystal layer is 250 to 450 nm. | 11-06-2014 |
| 20140340619 | DISPLAY DEVICE - A display device including a display panel, a first polarizer, a second polarizer, a first phase compensation film, and a second phase compensation film is provided. The first polarizer and the second polarizer are disposed on two sides of the display panel. The first polarizer has a first light-absorption axis, and the second polarizer has a second light-absorption axis. The first phase compensation film and the second phase compensation film are disposed between the first polarizer and the second polarizer. The second phase compensation film obeys a first formula: | 11-20-2014 |
| 20150146142 | OPTICAL COMPENSATION FILM FOR LIQUID CRYSTAL DISPLAY AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - The present invention relates to liquid crystal display technology, and provides an optical compensation film for a liquid crystal display, including a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel respectively, and an A-plate and a C-plate arranged between the liquid crystal panel and the first polarizer or between the liquid crystal panel and the second polarizer, wherein the in-plane compensation value for optical path difference of the A-plate Ro | 05-28-2015 |
| 20160062167 | LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY - A liquid crystal panel and a liquid crystal display are disclosed. The liquid crystal display includes a liquid crystal cell having a light incident side and a light emitting side, a first polarizer arranged on the light incident side of the liquid crystal panel, a second polarizer arranged on the light emitting side of the liquid crystal panel, and a half wave plate arranged between the first polarizer and the liquid crystal cell. An absorbing axis of the first polarizer is parallel to the absorbing axis of the second polarizer, and an angle between a slow axis of the half wave plate and the absorbing axis of the first polarizer is 45 or 135 degrees. In this way, the liquid crystal display with the two polarizers parallel to each other can be in all-black state when no voltage is applied. In addition, the contrast is greatly enhanced. | 03-03-2016 |
| 20160070129 | Liquid Crystal Display and Optical Compensation Method Therefor - A liquid crystal display and an optical compensation method therefor are provided specifically for adjusting compensation values of an uniaxial positive birefringence A-compensation film (A-Plate) and an uniaxial negative birefringence C-compensation film (C-Plate) and particularly for controlling a valuing range of a compensation value (R | 03-10-2016 |
