Sharp Kabushiki Kaisha Corporation

Takeshi Masuda

Hisashi Watanabe

Yuhsaku Ajichi

Yukihiro Sumida

Hirotoshi Yasunaga

Youzou Kyoukane

Mitsuhiro Murata

Takeshi Ishida

Ryuzo Yuki

Shinya Kadowaki

Tsuyoshi Ebi

Yukihide Kohtoku

Atsuyuki Tanaka

Hiroyuki Furukawa

Yutaka Sawayama

Shugo Yagi

Yuuichi Kanbayashi

Tomoki Kubo

Masahiro Adachi

Tokihiko Shinomiya

Masafumi Ueno

Hiroshi Nakanishi

Nobuyoshi Nagashima

Tetsuya Ueno

Kazuyoshi Yoshiyama

Yoji Noguchi

Satoshi Tsubooka

Yukio Matsuura

Takuji Yamatani

Toshiyuki Makii

A lighting device includes a plurality of light sources arranged side by side in a plane and a wavelength conversion sheet arranged to face a light emitting surface of each of the light sources and converting a wavelength of light from the light sources, in which the wavelength conversion sheet includes a base material having transparency, and a wavelength conversion layer in which a plurality of protrusions containing a wavelength conversion material and having a spherical surface are arranged side by side without gaps on a principal surface of the base material opposite to the light sources.

Lighting device using wavelength conversion sheet, and display device using the same

A lighting device includes a circuit substrate that includes a wiring circuit, LEDs that are mounted on the circuit substrate and that emit primary light, a phosphor sheet that faces a light emission surface of each of the LEDs and that has a function of converting part of the primary light into secondary light in another wavelength range that differs from the wavelength range, and a selective reflection layer that is composed of dielectric multilayer film, that is disposed between the phosphor sheet and the LEDs, that covers the light emission surface of each of the LEDs, that allows the part of the primary light to be transmitted therethrough, and that reflects part of the secondary light. The selective reflection layer is disposed so as to have convex shapes projecting in a direction opposite a direction toward the circuit substrate in regions that overlap the LEDs.

Lighting device and method of producing light source substrate

A lighting device includes light sources arranged in an arrangement direction, a first light guide plate, and a second light guide plate on the first light guide plate. The first light guide plate includes a first light entering surface, a first light exit surface, and a first light diffusion portion adding a diffusion action to light to be refracted and travel in a crossing direction crossing the arrangement direction. The second light guide plate includes a second light entering surface, a second light exit surface, and a second light diffusion portion adding a diffusion action to light to be refracted and travel in the arrangement direction seen from the normal direction of the second light exit surface. The second light diffusion portion includes first lenses that include ridgelines extending in the crossing direction and inclined portions inclined at an angle from 35&#xb0; to 55&#xb0; inclusive relative to the normal direction.

Lighting device and display device

A light-emitting-element-equipped substrate includes: a circuit substrate including a main surface; a light-emitting element mounted on the main surface and electrically connected to the circuit substrate; a silicone-based white resist layer covering the main surface and including: a first opening surrounding the light-emitting element; and a second opening different from the first opening; and a transparent protective layer covering the light-emitting element, the silicone-based white resist layer, and the second opening.

Light-emitting-element-equipped substrate and backlight

An LED light-source substrate includes a first bonding sheet covering the LED, a second bonding sheet formed on the first bonding sheet, and a reflective layer formed on the second bonding sheet to suppress light from the LED. The second bonding sheet is bonded peelably from the first bonding sheet.

LED light-source substrate and illumination device

A lighting device includes light sources arranged in a row in an arrangement direction, alight guide plate disposed to cover the light sources and including a plate surface facing the light sources and an opposite plate surface opposite from the plate surface, and a light diffusion portion. A portion of the plate surface is a light entering surface and the opposite plate surface is a light exit surface. The light diffusion portion extends in the arrangement direction of the light sources and on the light exit surface such that a portion of the light diffusion portion overlaps the light sources. The light diffusion portion applies a diffusion effect to light that is within the light guide plate so as to travel in a direction crossing the arrangement direction and to be away from the light sources seen from a normal direction of the light exit surface.

Lighting device including light guide plate and display device including the lighting device

A lighting device includes a mounting substrate comprising a first pair of conductive pads and a second pair of conductive pads arranged along a first direction on the mounting substrate. The first pair of conductive pads is offset from the second pair of conductive pads in the first direction and a second direction intersecting the first direction with respect to a plane parallel to the mounting substrate. A first light emitting device is coupled to the first pair of conductive pads, and configured to emit lights toward a first side within a space formed between the mounting substrate and a diffusion plate. A second light emitting device is coupled to the second pair of conductive pads, and configured to emit lights toward a second side opposite of the first side within the space formed between the substrate and the diffusion plate.

Lighting device with offset land patterns

A reflection sheet stacked on a mounting surface of a light source substrate on which light sources are mounted includes an insulating sheet and a reflection layer. The insulating sheet is made of an insulating material. The reflection layer includes a metal thin film stacked on the insulating sheet. Holes are drilled through the reflection layer and the insulating sheet in a stacking direction in which the reflection layer is stacked on the insulating sheet so that the light sources are exposed therethrough. The reflection layer is divided into divided reflection areas by slits. The holes are formed in the divided reflection areas, respectively.

Reflection sheet, lighting device and display device

A backlight device (illumination device) is provided with LEDs (light sources) and a light-controlling sheet (light-controlling member) that is arranged at the exit side of the outgoing-light path of the LEDs. The light-controlling sheet has a light-transmitting layer that transmits light, first light-shielding sections that are arranged at the LED side of the light-transmitting layer, and a second light-shielding section that is arranged at the opposite side to the first light-shielding section side of the light-transmitting layer. The first light-shielding sections and the second light-shielding section are repeatedly arranged side-by-side in an alternating manner.

Illumination device and display device

[Object] To provide an illumination device that suppresses degradation of display quality by preventing damage of light source elements, a reflection sheet, and an optical sheet; and a display. [Solution] A backlight deviceincludes: an LED substrate; a plurality of LEDsdisposed adjacent to each other on the LED substrate; an optical memberdisposed to face the LEDs; a reflection sheetdisposed on the LED substrateand having a plurality of openings at which the LEDsare disposed; and a support bodyformed at least in a gap between the reflection sheetand the LEDs, at at least one of the plurality of openings, the support bodyprojecting further than the LEDson a side opposite to the LED substrateand supporting the optical member

Illumination device and display using light reflector

A lighting device includes a light source, a light reflecting unit, and a light diffusing unit. The light reflecting unit is arranged on an exit side of a light exit path with respect to the light source to reflect at least a part of a light emitted from the light source and transmit a part of the light. The light reflecting unit has an angle selecting property such that a reflectance of a light having a small incident angle becomes higher than a reflectance of a light having a large incident angle. The light diffusing unit is arranged between the light source and the light reflecting unit in the light exit path to diffuse the light.

A lighting device includes light sources, a light source substrate, and a reflection sheet. The light source substrate includes a plate-shaped base including a mounting surface on which mounting portions are formed. The light sources are mounted on the mounting portions with solders. The reflection sheet includes an insulating sheet, a reflection layer, and holes. The reflection layer includes a metal thin film stacked on the insulating sheet. The holes are drilled through the reflection layer and the insulating sheet at positions corresponding to the light sources so that the light sources are exposed through the holes. The light source substrate and the reflection sheet are bonded together with an adhesive layer. The insulating sheet is made of a material having a heat resistance higher than a melting temperature of the solders and an elastic modulus lower than that of the base of the light source substrate.

Lighting device, display device, and method of producing lighting device

A lighting device includes a light source having a light exit surface, an optical member covering the light exit surface and applying an optical action to light exiting the light source, and a prism sheet coveting the optical member from an opposite side from the light source, and the prism sheet includes prism portions and a light reflecting portion that covers a part of a surface of the prism portions opposite from the optical member.

A lighting device includes a substrate and light sources that are top-emitting light sources. The substrate includes a first plate surface and a second plate surface. The light sources include first electrodes and second electrodes. A reflection layer made of metal, an insulating layer, and a first conductive pattern are formed on the first plate surface in this sequence from a lower layer side. A second conductive pattern is formed on the second plate surface. The light sources are disposed on the first plate surface with the first electrodes and the second electrodes electrically connected to the first conductive pattern and at least the first electrodes or the second electrodes electrically connected to the second conductive pattern via holes in the substrate. The reflection layer is divided into divided reflection areas by slits. The holes are formed in the divided reflection areas, respectively.

[Object] To provide a lighting device and a display device that can prevent contact between a reflective sheet having a metal film and solder firmly fixed to terminal areas of LEDs that are disposed in LED openings of the reflective sheet. [Solution] A lighting deviceincludes: a plurality of LEDsserving as backlight light sources; an LED substratemounted with the plurality of LEDs; a reflective sheethaving a plurality of LED openingsin which the plurality of LEDsare disposed, respectively, and having a metal film on a surface of the reflective sheetopposite to a surface of the reflective sheetthat faces the LED substrate; and a supportthat supports the reflective sheetat a higher position than a height of solderfirmly fixed to terminal areas of the LEDsthat face the LED substrate

Growing community of inventors

Sakai, Japan

Takeshi Masuda