| Patent Number |
Title Of Patent |
Date Issued |
| 7494259 |
Lighting unit |
February 24, 2009 |
| A lighting unit including a light-reflecting reflector, a plurality of cold cathode tubes disposed inside the reflector and an optical waveguide connected with an open end of the reflector to guide the light emitted by the cold-cathode tubes. The reflector has a reflective surface that |
| 7304703 |
Vertically-aligned (VA) liquid crystal display device |
December 4, 2007 |
| A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vert |
| 7227606 |
Vertically-alligned (VA) liquid crystal display device |
June 5, 2007 |
| A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to subst |
| 7224421 |
Vertically-aligned (VA) liquid crystal display device |
May 29, 2007 |
| A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost hor |
| 7167224 |
Vertically-aligned (VA) liquid crystal display device |
January 23, 2007 |
| A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vert |
| 7133015 |
Apparatus and method to improve quality of moving image displayed on liquid crystal display devi |
November 7, 2006 |
| A liquid crystal display device comprises a panel having pixel electrodes arranged at intersections of a plurality of signal lines via switching elements for transmitting display data and a plurality of scanning lines for transmitting control signals, and a control circuit for controllin |
| 6819366 |
Display device with condenser elements |
November 16, 2004 |
| The display device includes a spatial modulator having a plurality of pixels and a periodical structural body having condenser elements corresponding to the pixels of the spatial modulator. Each of the pixels of the spatial modulator includes a plurality of color dots arranged in a f |
| 6724452 |
Vertically aligned (VA) liquid crystal display device |
April 20, 2004 |
| A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to subst |
| 6661488 |
Vertically-alligned (VA) liquid crystal display device |
December 9, 2003 |
| A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical |
| 6655810 |
Lighting unit |
December 2, 2003 |
| The invention relates to a backlight unit for liquid crystal displays, etc.; and its object is to provide a backlight unit not involving the problem that the emitted light leaks out of the optical waveguide, even when the space around the cold-cathode tubes in the light source unit for |
| 6639642 |
Display device having diffraction grating |
October 28, 2003 |
| A display device including a diffraction grating from which a diffracted light of the zeroth order and a diffracted light of the first order having different color light components emerge to establish color separation. An array of micro-lenses is arranged on a liquid crystal panel. The l |
| 6559910 |
Display device with condenser elements |
May 6, 2003 |
| The display device includes a spatial modulator having a plurality of pixels and a periodical structural body having condenser elements corresponding to the pixels of the spatial modulator. Each of the pixels of the spatial modulator includes a plurality of color dots arranged in a f |
| 6552760 |
Luminaire with improved light utilization efficiency |
April 22, 2003 |
| A lens array 22C has convex lenses 221 and 221C arranged in alternate and staggering manner to one another. In combination with a condenser lens 23, the convex lenses 221 form images of respective convex lenses 211 of a lens array 21 on a plane 24 to be illuminated in overlapping so that |
| 6481854 |
Projection type display apparatus having air cooling arrangement |
November 19, 2002 |
| The projection type display apparatus has liquid crystal panels with polarizers, a light source, a power supply, and a ballast. A cooling device is arranged in the apparatus such that a first set of cooling fans blow cooling air to cool the liquid crystal panels and the polarizers, and |
| 6392726 |
Screen and production display apparatus using the same |
May 21, 2002 |
| A screen has a screen main body, a power supply and a voltage regulator. The screen main body has a Fresnel lens, a polymer dispersed liquid crystal unit and a lenticular lens. The liquid crystal unit includes a polymer dispersed liquid crystal and a pair of transparent electrodes wh |
| 6246506 |
Optical display device having a reflection-type polarizer |
June 12, 2001 |
| A polarization device includes a reflection-type polarization element disposed at a side to which an optical beam comes in and an absorption-type polarization element disposed behind the reflection-type polarization element, wherein the reflection-type polarization element and the ab |
| 6222515 |
Apparatus for controlling data voltage of liquid crystal display unit to achieve multiple gray-s |
April 24, 2001 |
| In a driving device of an active matrix type liquid crystal display unit including a liquid crystal display panel, a scan driver, and a data driver, a data voltage controlling apparatus is provided to achieve digital multiple gray-scale levels with little flickering. The data voltage |
| 6111700 |
Optical display device having a reflection-type polarizer |
August 29, 2000 |
| A polarization device includes a reflection-type polarization element disposed at a side to which an optical beam comes in and an absorption-type polarization element disposed behind the reflection-type polarization element, wherein the reflection-type polarization element and the ab |
| 5959704 |
Display device having diffraction grating |
September 28, 1999 |
| A display device including a diffraction grating from which a diffracted light of the zeroth order and a diffracted light of the first order having different color light components emerge to establish color separation. An array of micro-lenses is arranged on a liquid crystal panel. The l |
| 5861927 |
Liquid crystal display device with uniform characteristics over whole display area |
January 19, 1999 |
| A liquid crystal display device includes: a liquid crystal spatial modulating element holding a liquid crystal layer between a pair of parallel substrates, wherein transmission of light incident upon the liquid crystal layer along an incidence direction tilted to a predetermined dire |
| 5860719 |
Optical apparatus and cooling method thereof |
January 19, 1999 |
| A light source such as a metal halide lamp is effectively cooled in an optical apparatus such as a liquid crystal projector. In an optical apparatus which includes a concave mirror 11, a light emitting section 12 arranged in a concave portion of the concave mirror along the optical axis |
| 5764412 |
Polarization separation/conversion device for polarized lighting apparatus and projection displa |
June 9, 1998 |
| Columnar prisms 22 to 24, cross sections of which are parallelograms, are arranged symmetrically on both sides of a columnar prism 21 whose cross section is an isosceles right triangle. The prisms are bonded to their adjacent prisms at polarization separation films D1 to D3 which are |
| 5614780 |
Light source for projection type display device |
March 25, 1997 |
| A light source for use in a projection type liquid crystal display device. The light source includes an electrodeless light emitting member having a light emitting material sealed in a transparent tube to emit light upon the application of microwave electromagnetic energy. A concave mirr |
| 5506642 |
Projector with plastic mirror |
April 9, 1996 |
| A projector comprising liquid crystal display panels and a projection lens for projecting the modulated light to a screen. A back surface reflection mirror including a transparent plastic sheet and a reflecting film is arranged between the projection lens and the screen. The mirror is th |
| 5311227 |
Liquid crystal projection display device with mirror |
May 10, 1994 |
| A projection display device comprising three projection lenses arranged in a row in a side by side relationship and having respective optical axes extending toward a screen, and three liquid crystal display panels forming images of red, green and blue color lights, the liquid crystal dis |
| 4567470 |
Touch sensing device |
January 28, 1986 |
| A touch sensing device employing a new sensing method of the present invention is composed of the sensing portion which senses capacitance change of the touch sensing electrodes forming the touch panel, plurality of capacitance compensating capacitors which are used in common for the |
