Fujitsu Corporation

Sharp Kabushiki Kaisha Corporation

Fujitsu Display Technologies Corporation

Fujitsu Kasei Limited

Takeshi Gotoh

Tetsuya Kobayashi

Toshihiro Suzuki

Tetsuya Hamada

Keiji Hayashi

Mari Sugawara

Hisashi Yamaguchi

Seiji Tanuma

Makoto Ohashi

Hidefumi Yoshida

Kazutaka Hanaoka

Hirokazu Aritake

Takatoshi Mayama

Junji Tomita

Noriyuki Ohashi

Yuichi Inoue

Toshiaki Suzuki

Koichi Katagawa

Katsunori Tanaka

Seiji Hachisuka

Akio Sotokawa

Yoshio Koike

Yasutoshi Tasaka

Yohei Nakanishi

Kazuhiro Takahara

Motohiko Fukuhara

Yukio Iigahama

Koji Yoshioka

Katsufumi Ohmuro

Arihiro Takeda

Kunihiro Tashiro

Takashi Sasabayashi

Norio Sugiura

Kimiaki Nakamura

Fumiaki Yamada

Seiji Hayashimoto

Koshu Yonemura

Masaru Ishiwa

Hiroyoshi Takahashi

Kazumasa Kaiwa

A liquid crystal display device includes 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 controlling the panel. The liquid crystal panel is divided into first pixel regions and second pixel regions adjacent to the first pixel regions. The control circuit carries out impulse driving in which the control signals transmitted to each of the scanning lines are activated two times in one frame period for displaying an image. The control circuit writes the display data in either one of the pixel regions and writes reset data in the other pixel regions when the control signals are activated once of the two times. By writing the reset data in the pixel regions, the display data written in an immediately preceding frame are reset. In consecutive frames, the display data written in the pixel regions are always reset in one frame period. Therefore, blurring in a moving image can be alleviated. Since writing the display data and the reset data is carried out separately in the first pixel regions and in the second pixel regions, flicker is prevented from occurring in a display screen.

Apparatus and method to improve quality of moving image displayed on liquid crystal display device

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 at a first position in the discharge tube, and the backlight is assembled so that the heat conduction member or other cooling device is located at the first position. Also, the display device includes an optical sheet having a diffusion portion having projections containing scattering material particles.

Backlight having a polarization separating element

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 reflects the light having been emitted by the cold-cathode tubes in the direction nearly perpendicular to the wall of each tube, and only in a direction in which the light reflected does not re-enter the cold-cathode tubes. In another embodiment, the lighting unit may include a second optical waveguide disposed in the space between the cold-cathode tube and the reflector, wherein a space is formed between the cold-cathode tube and the second optical waveguide.

Lighting unit

Backlight having discharge tube, reflector and heat conduction member contacting discharge tube

Method of producing a backlight having a discharge tube containing mercury

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 where light emitted from an LED falls, a light reflection surface formed facing the light incidence surface and reflects light from the light incidence surface, a light outgoing surface arranged between the light incidence surface and the light reflection surface, and has a circularly polarizing plate intimately adhered onto the surface thereof, and an opposing surface formed facing the light outgoing surface and in which there are alternately arranged first opposing surfaces for guiding the incident light to the light outgoing surface as well as to the light reflection surface, and second opposing surfaces for emitting the light reflected by the light reflection surface through the light outgoing surface.

Light guide plate, light source device equipped therewith and display device

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 discharge tubes and a heat conductive member that is brought into contact with the neighboring area of the electrodes of the discharge tubes so as to locally cool down the neighboring area of the electrodes. In the light source device, a low heat conductivity member having lower heat conductivity than the heat conductive member is interposed between the heat conductive member and the discharge tubes. With such a structure, the luminance in the entire light source device can be increased and made uniform, and the reliability of the light source device can be increased accordingly.

Light source device, method of producing the same, and display apparatus

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 the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.

Reflection type liquid crystal display device and manufacturing method thereof

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 disposed on a side surface of the light guiding plate. Light emitted from the light source propagates through the light guiding plate and has a primary direction. A smaller one of two angles between a projection of the primary direction onto the reflective liquid-crystal panel and an absorption axis of the light guiding plate is at least 50&#xb0;. This resultantly improves performance of the liquid-crystal display.

Liquid-crystal display and a lighting apparatus

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 first direction. A length of a peripheral region of the respective pixel encircling the plurality of color dots, measured in the first direction, is longer than a length of the condenser element of the periodical structural body, measured in the first direction. In addition, combinations of the pixels in the square, delta or mosaic arrangement with the condenser elements in the square, delta or mosaic arrangement are disclosed.

Display device with condenser elements

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 it is filled with a liquid of which the refractive index is nearly the same as that of the glass material that forms the outer wall of the cold-cathode tubes. The backlight unit comprises a housing which houses cold-cathode tubes therein and of which the inner surface is coated with a light reflector a transparent liquid filled in the housing and an optical waveguide made of a transparent substance and having a light-emitting surface S. The reflective surface of the light reflector has a cross-section profile of X-T-U-V-W-Y, on which the light emitted by the cold-cathode tubes is reflected, and the thus-reflected light is led to the light-emitting surface S of the optical waveguide at an incident angle not smaller than the critical angle to the surface S.

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 liquid crystal panel has a plurality of picture elements and each picture element includes a plurality of color display dots. The color display dots in each picture element are arranged in the vertical relationship and in the order of wavelength of the light. A green light component of diffracted light of the first order is made incident normal to the liquid crystal panel, and the diffracted light of the zeroth order passes through the liquid crystal panel at a greater angle relative to the normal to the liquid crystal panel.

Display device having diffraction grating

Growing community of inventors

Kawasaki, Japan

Takeshi Gotoh