Japan Display Inc.

Nec Corporation

Tdk Corporation

Toyota Jidosha Kabushiki Kaisha

Magnolia White Corporation

Takashi Ota

Nobuyuki Suzuki

Koji Shigemura

Michihide Shibata

Tomohisa Onishi

Toji Aoshima

Shiori Akamatsu

Atsushi Sato

Makoto Yoshida

Kenichi Yoshida

Hisayuki Abe

Masafumi Okada

Tohru Inoue

Miyuki Yanagida

Takaaki Domon

Katsunori Osanai

Masumi Kameda

Makoto Hasegawa

Shinichi Komura

Naoki Nishimura

Hironori Ito

Koichi Okuda

Hiroaki Kijima

Atsushi Hitomi

Kazuhiko Itoh

Teiichi Tanaka

Takashi Kajino

Masahiko Kurihara

Kouji Fujisawa

Hisanobu Inoue

Kana Yamashita

Kazutaka Nagaoka

Toshihiro Yajima

Toshiaki Nakazawa

A display device includes an image generation unit configured to generate a status image presented to a driver of the vehicle, the status image representing to a current status of the vehicle and surroundings of the vehicle; a map information acquisition unit configured to acquire the map information and recognize an acquisition status of the map information; a display mode setting unit configured to set a display mode; and a display control unit configured to display the status image on a display unit in the display mode. The acquisition status includes a first case, a second case, and a third case in which the map information is temporarily unavailable. The display mode setting unit sets the display mode so that the display mode of the first case, the second case and the third case are different from each other.

Display device

A display device includes: point light sources emitting light of different colors; light guides each of which includes an end face facing a corresponding one of the point light sources, a first surface connected to the end face, and a second surface diagonally facing the end face and the first surface, the light being incident on the end face and undergoing internal reflection, between the first and second surfaces, and linear pattern emission from the first surface; and a display panel including a side surface that faces the first surface and on which the light is incident, front and back surfaces, and a converter that changes a traveling direction of the light, for each pixel of the image, propagating away from the side surface internally between the front and back surfaces, to a direction toward the display surface.

A backlight includes: a light guide plate including a front surface and a back surface, the light guide plate including an end face that connects one edge of the front surface and one edge of the back surface, at least part of the end face being inclined at an angle other than a right angle relative to the front surface; and a light source that emits light, the light source being set in an arrangement enabling emission of the light parallel to the front surface towards the at least part of the end face of the light guide plate, wherein the light is incident on and refracted at the at least part of the end face, propagates inside a material of the light guide plate, is reflected off the back surface, and is surface-emitted from the front surface.

Backlight and display device

According to one embodiment, an illumination device comprises a plurality of light emitting elements that are disposed on a main surface of a wiring board, a light diffusion distance maintaining layer, a wavelength conversion layer, and a prism sheet, wherein the main surface of the wiring board is divided into a plurality of segment regions, n (n>1) light emitting elements are provided in each of the segment regions, the light emitting elements are independently driven in units of the segment regions, and a thickness of the light diffusion distance maintaining layer is ½ times or more a pitch of the segment regions adjacent to each other.

Illumination device and display device

An object of the present invention is to provide a high-definition and high-contrast display apparatus using accurate local dimming. In achieving the object of the invention, there is provided a display apparatus including a display panel and a backlight. The backlight has a light source and an optical sheet. The light source has a light source substrate and LEDs arranged on the light source substrate. The light source is divided into segments in planar view. The segments include at least one LED each. The light source substrate and the LEDs are covered with a transparent resin. The transparent resin is overlaid with a sheet having a honeycomb partition.

Display apparatus

A backlight includes: a light source capable of emitting light spreading in first and second directions perpendicular to each other, from an optical axis; a first cylindrical lens that refracts and brings the light closer along the first direction to the optical axis, the first cylindrical lens overlapping with the light source in a third direction perpendicular to the first and second directions; a second cylindrical lens that refracts and brings the light even closer along the first direction to the optical axis, the second cylindrical lens overlapping with the light source and the first cylindrical lens in the third direction; and a reflector that reflects and brings the light closer along the second direction to the optical axis, the reflector being positioned between the first cylindrical lens and the second cylindrical lens in the third direction, the reflector avoiding overlap with the light source.

The purpose of the present invention is to realize a display device of high definition and high contrast by applying an accurate local dimming. The structure of the invention is as follows. A display device including: a display panel and a back light, in which the back light includes a light source and an optical sheet group, the light source includes a light source substrate and LEDs disposed on the light source substrate, the light source is divided into segments in a plan view, at least one of the LEDs is disposed in a segment, the light source substrate and the LEDs are covered by a transparent resin, and a groove like gap is formed in the transparent resin along a border between the segments.

A lighting device including a first unit and a second unit, the first unit including: a first funnel shaped reflector having a first neck, a first opening, a first reflecting surface and a first light axis, a first LED emitting a first color disposed on the first neck, a first liquid crystal lens disposed at the first opening, a second unit including: a second funnel shaped reflector having a second neck, a second opening, a second reflecting surface and a second light axis, a second LED emitting a second color disposed on the second neck, a second liquid crystal lens disposed at the second opening; a length hof the first funnel shaped reflector is same as a length of the second funnel shaped reflector, and a diameter dof the first opening is same as a diameter of the second opening, and h/dis two or more.

Lighting device

The purpose of the present invention is to realize a display device of high definition and high contrast by applying an accurate local dimming. The structure of the invention is as follows. A display device including: a display panel and a back light; in which the back light includes a light source and optical sheet group; the light source includes the light source substrate and LEDs disposed on the light source substrate; the light source is divided into segments in a plan view; at least one of the LEDs is disposed in a segment; the light source substrate, except the LEDs, is covered by a protective film; the segment is partitioned as by wall with the partition plate made of resin; the partition plate is disposed on the protective film.

According to an aspect, an illumination device includes: a plurality of light-emitting elements arrayed in a matrix along two directions; and a substrate on which the light-emitting elements are provided. The substrate has a plurality of partial regions. The light-emitting elements are arranged in the partial regions such that four light-emitting elements are arrayed in a two-by-two matrix along the two directions in each of the partial regions. Two light-emitting elements adjacent to each other in each of the partial regions are arranged at a first interval in one direction of the two directions. Two light-emitting elements adjacent to each other with a boundary of two partial regions adjacent to each other along the one direction interposed therebetween are arranged at a second interval in the one direction. The first interval is shorter than the second interval.

Illumination device

According to one embodiment, an illumination device comprises a plurality of light emitting elements that are disposed on a main surface of a wiring board, a light diffusion distance maintaining layer, a wavelength conversion layer, and a prism sheet, wherein the main surface of the wiring board is divided into a plurality of segment regions, n (n&#x3e;1) light emitting elements are provided in each of the segment regions, the light emitting elements are independently driven in units of the segment regions, and a thickness of the light diffusion distance maintaining layer is &#xbd; times or more a pitch of the segment regions adjacent to each other.

An illumination device is provided and includes a light guide; a light emitter facing the light guide; a wiring substrate provided on the light emitter and electrically connected to the light emitter; and a frame surrounding the light guide and the light emitter, wherein the wiring substrate has a first edge and a second edge which extend in a first direction, and a third edge which connects the first edge and the second edge, the frame has a fourth edge facing the third edge, the third edge and the fourth edge are spaced apart from each other and form a trench which communicates with an outside of the illumination device, and the trench has a curved portion in plan view.

According to one embodiment, an electronic device includes a liquid crystal panel and an illumination unit which illuminates the liquid crystal panel. The illumination unit includes a light guide comprising a first side surface, a main surface opposing the liquid crystal panel and an opening made by a notch or a through hole, a first light source opposing to the first side surface, and a second light source provided closer to the opening than to the first light source.

Electronic device

An illumination device is provided and includes a light guide; a light emitting unit facing the light guide; a wiring substrate provided on the light emitting unit; and a frame surrounding the light guide and the light emitting unit, wherein the wiring substrate has a first edge and a second edge which extend in the first direction, and a third edge which connects the first edge and the second edge, the frame has a fourth edge facing the third edge; the third edge and the fourth edge are spaced apart from each other and form a trench which communicates with an outside of the illumination device, and a length of the third edge and a length of the fourth edge along the trench are larger than a distance between the first edge and the second edge in a second direction intersecting the first direction.

According to one embodiment, an illumination device includes a light guide, a frame surrounding the light guide, a light emitting unit located between the light guide and the frame, and a wiring substrate electrically connected to the light emitting unit. The wiring substrate includes a convex portion projecting in a first direction as seen in plan view. The frame includes a concave portion facing the convex portion as seen in plan view. The concave portion is spaced apart from the convex portion.

Growing community of inventors

Tokyo, Japan

Takashi Ota