| Patent Number |
Title Of Patent |
Date Issued |
| 7541723 |
Backlight having a polarization separating element |
June 2, 2009 |
| A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the discharge tube is locally cooled by the heat conduction member. Liquid mercury is collected a |
| 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 |
| 7342561 |
Driving method and drive control circuit of liquid crystal display device, and liquid crystal di |
March 11, 2008 |
| A drive control circuit supplies a gate voltage so that display quality is not degraded even in a case where a vertical scanning frequency or a horizontal scanning frequency is changed. The circuit includes a timing controller for detecting a change of a horizontal scanning frequency, a |
| 7312782 |
Liquid crystal display device |
December 25, 2007 |
| A backlight driving circuit is controlled by a timing controller and executes on/off control of the backlights. The timing controller detects, using a synchronous signal, a change in a blank period which is of one frame period for display of one screen, during which the image signal is |
| 7309146 |
Backlight having discharge tube, reflector and heat conduction member contacting discharge tube |
December 18, 2007 |
| A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the discharge tube is locally cooled by the heat conduction member. Liquid mercury is collected a |
| 7277079 |
Illumination device and liquid crystal display device using the same |
October 2, 2007 |
| An illumination device is provided which can reduce a movement blur and a tailing phenomenon on a motion picture display while a drop in display brightness is suppressed, and which can suppress power consumption, can be made small and light, and can prolong the lifetime, and a liquid |
| 7169005 |
Method of producing a backlight having a discharge tube containing mercury |
January 30, 2007 |
| A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the discharge tube is locally cooled by the heat conduction member. Liquid mercury is collected a |
| 7164224 |
Backlight having discharge tube, reflector and heat conduction member contacting discharge tube |
January 16, 2007 |
| A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the discharge tube is locally cooled by the heat conduction member. Liquid mercury is collected a |
| 7163331 |
Lighting unit and display device |
January 16, 2007 |
| A lighting unit and a liquid crystal display device which can improve the efficiency of usable light. The lighting unit includes a light source, a light guide plate, and a truncated pyramid located between the light guide plate and the light source. The truncated pyramid has a base, a to |
| 7122946 |
Light source device having high limit-emitting efficiency |
October 17, 2006 |
| There is provided a light source device, used in a display device and the like, having a high light emitting efficiency. The light source device has an electric discharge tube containing mercury and electrodes at both ends. A heat conducting member is attached to and is in contact with a |
| 7073933 |
Light guide plate, light source device equipped therewith and display device |
July 11, 2006 |
| A display device used for a display unit of portable electronic equipment, a light source device therefor and a light guide plate, suppressing dispersion in the brightness and featuring a high contrast and a good display quality. The constitution includes a light incidence surface on |
| 7015632 |
Light source device, method of producing the same, and display apparatus |
March 21, 2006 |
| The present invention relates to a light source device including discharge tubes that emit light by discharging in a thin atmosphere, a method of producing the light source device, and a display apparatus in which the light source device is employed. This light source device includes |
| 6882388 |
Reflection type liquid crystal display device and manufacturing method thereof |
April 19, 2005 |
| The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in |
| 6847424 |
Liquid-crystal display and a lighting apparatus |
January 25, 2005 |
| A liquid-crystal display includes a reflective liquid-crystal panel, a light guiding plate disposed on the reflective liquid-crystal panel, a polarizer arranged between a liquid-crystal layer of the reflective liquid-crystal panel and the light guiding plate, and a light source dispo |
| 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 |
| 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 |
| 6513936 |
Projector |
February 4, 2003 |
| A projector includes a first housing, a second housing, and a sound insulating member. The first housing is provided with first heat-generating elements used for generating an image, first fans producing cooling airflows towards each one of the first heat-generating elements, and ven |
| 6501524 |
Liquid crystal display device |
December 31, 2002 |
| A homeotropic alignment type liquid crystal display device is provided with first and second substrates confronting each other, first and second bus lines arranged in mutually perpendicular directions on the second substrate, liquid crystals provided between the first and second subs |
| 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 |
| 6396470 |
Liquid crystal display apparatus |
May 28, 2002 |
| A liquid crystal display apparatus has a display section formed on a first substrate. The display section including a plurality of pixels disposed in a matrix pattern, a plurality of scan lines extending in a row direction and a plurality of signal lines extending in a column direction. |
| 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 |
| 6322218 |
Projection type display |
November 27, 2001 |
| The present invention relates to a projection type display using a transmission type liquid crystal light valve and its object is to provide a projection type display which does not reduce the reliability due to the change of the working environment.A projection type display of the prese |
| 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 |
| 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 |
| 6101286 |
Image processing apparatus and method having improved color-boundary mixing |
August 8, 2000 |
| It is an object of this invention to provide an image processing apparatus which, when nonmagnetic mono-component development is performed, prevents the formation of white gaps in pattern boundaries between different colors and thereby prevents degradation in the image quality of the for |
| 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 |
| 5930570 |
Oriented foamed rotary member, and developing device using same |
July 27, 1999 |
| There are disclosed a foamed rotary member having a surface of a foam, and a large number of cells provided in the foam and each having a prolate spheroid shape, wherein the major axis direction of the cell is along the rotation axis direction, and also a developing device using the foam |
| 5873010 |
Image forming apparatus for performing correction control, based on density of toner image |
February 16, 1999 |
| A color image forming apparatus having a plurality of developers is disclosed. The apparatus includes a photosensitive drum, a density sensor for detecting a developed control toner image, CPU and RAM. The apparatus performs a first control for image formation based on a density of a |
| 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 |
| 5826960 |
Protection type display device with polarized light reflecting mirror and polarized light source |
October 27, 1998 |
| A display device includes a reflective type polarizer, a light valve, an analyzer, a mirror, and a polarization rotating film. The polarizer allows a first polarized light to pass therethrough and a second polarized light to be reflected thereby. The second polarized light is then reflec |
| 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 |
| 5689783 |
Elastic blade and developing device using the same |
November 18, 1997 |
| An elastic blade is provided with a rubber layer and a surface resin layer provided on the rubber layer, the surface resin layer satisfying the following condition:whereE: elastic modulus of the surface resin layer (Kg/cm.sup.2);t: thickness of the surface resin layer (cm). |
| 5678130 |
Developing apparatus including a control function for applied periodic developing bias field |
October 14, 1997 |
| A developing apparatus includes a developer carrying member, disposed opposed to an image bearing member, for carrying a developer; a developing bias voltage applying source for applying a developing bias voltage having an oscillating component to the developer carrying member to develop |
| 5666597 |
Image forming apparatus with delayed discharge by discharge means |
September 9, 1997 |
| An image forming apparatus includes an image bearing member for bearing an image, the image bearing member being rotatable at a first speed and a second speed which is different from the first speed, wherein during image formation on the image bearing member, the first speed is selected, |
| 5666588 |
Image forming apparatus for performing image density control |
September 9, 1997 |
| By altering a developing bias, a plurality of patch images are formed on a photoconductor, and a density of each patch image is measured, thereby judging whether or not a target density value is within a range of the plurality of measured density values. If the target density value is |
| 5596393 |
Image forming apparatus having charging member supplied with oscillating voltage |
January 21, 1997 |
| An image forming apparatus includes image bearing member or members for bearing an image; charging member for sequentially charging a surface of the image bearing member or members to form an image thereon; a voltage source for applying an oscillating voltage to the charging member, the |
| 5559591 |
Image forming apparatus with function of requesting exchange of fixing unit |
September 24, 1996 |
| An image forming apparatus including image forming unit for forming an unfixed image on a recording medium, a pair of fixing rotary members for fixing the unfixed image on the recording medium, a cleaning member for cleaning surfaces of the fixing rotary members, the fixing rotary member |
| 5548381 |
Developing apparatus forming alternating electric field between image bearing member and toner c |
August 20, 1996 |
| A developing apparatus includes a toner carrying member, disposed opposite an image bearing member for bearing an electrostatic image, for carrying toner to the image bearing member; an electric field forming device for forming an alternating electric field between the image bearing memb |
| 5543900 |
Image forming apparatus which reduces toner fusion on an image bearing member |
August 6, 1996 |
| An image forming apparatus includes an image bearing member for bearing an image of toner and a charging member contactable to the image bearing member to charge the image bearing member. The charging member is adapted to receive a voltage and the toner has a melt index of not less than |
| 5523829 |
Image forming apparatus having recording material carrying member |
June 4, 1996 |
| An image recording apparatus includes an image bearing member; a recording material carrying member for carrying a recording material to a transfer position for transfer of an image; a moving device for imparting relative movement between the image bearing member and the recording materi |
| 5508796 |
Image forming apparatus with select relation among distances in recording material conveyance pa |
April 16, 1996 |
| The present invention provides an image forming apparatus with an image bearing member capable of rotating while bearing a toner image thereon, a transfer device for transferring the toner image from the image bearing member to a recording material at a transfer position, recording mater |
| 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 |
| 5457487 |
Color image forming apparatus which times release of each of plural color image signals |
October 10, 1995 |
| A color image forming apparatus forms a color image by superposing images of plural colors in plane-sequential manner. In the color image forming apparatus, the amount of aberration between the detection signal for the recording medium for the first color and the horizontal synchronizati |
| 5402218 |
System for reducing a surface potential of an image bearing member in an image forming apparatus |
March 28, 1995 |
| An image forming apparatus includes an image bearing member, a latent image forming device for forming a latent image having a high potential portion and a low potential portion before a toner image is formed on the image bearing member, a transfer material bearing member for bearing and |
| 5369478 |
Developing apparatus |
November 29, 1994 |
| A developing apparatus includes a rotatable developer carrying member for carrying one component developer to a developing zone for developing an electrostatic latent image for an image bearing member; a regulating member for regulating a thickness of a layer of the developer to be c |
| 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 |
| 5307127 |
Developing apparatus using one component toner with improved flowability |
April 26, 1994 |
| A developing apparatus includes a developer carrying member for supplying a developer to an image bearing member, wherein the developer is a one component developer, and has a flowability index of 5-30%. A developing bias voltage application device applies a developing bias to the develo |
