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US 11,079,093 B2Granted
Light emitting device, display device, and lighting device
AssigneeSaturn Licensing LLC
InventorsTakeshi Yamamoto, Tomoyuki Yoshimatsu, Soya Araki, Naoki Tanaka
Life of this patent
Estimating the term…
Abstract
A light emitting device includes: a light emitting element; a reflection wall that surrounds the light emitting element; and a diffusion reflection sheet that includes a plurality of particles and permits entrance of emitted light from the light emitting element and reflected light from the reflection wall.
Claims16
A light emitting device, comprising:
- a light emitting element comprising an LED (Light Emitting Diode);
- a light source substrate having a surface on which the light emitting element is disposed;
- a covering material that covers the light emitting element, the covering material having a refractive index between a refractive index of the light emitting element and a refractive index of air;
- a reflection wall that surrounds the light emitting element and is in contact with the surface of the light source substrate;
- a wavelength conversion sheet that faces the light source substrate;
- a diffusion reflection sheet that is in contact with the reflection wall and includes a plurality of particles and permits entrance of emitted light from the light emitting element and reflected light from the reflection wall, wherein the diffusion reflection sheet is formed as a single resin sheet printed with ink including the plurality of particles, and wherein the diffusion reflection sheet is disposed between the wavelength conversion sheet and the light source substrate;
- and
- an optical sheet provided between the diffusion reflection sheet and the wavelength conversion sheet.
5 more elements
A display device provided with a display panel and a light emitting device that illuminates the display panel,
- the light emitting device comprising:
- a light emitting element comprising an LED (Light Emitting Diode);
- a light source substrate having a surface on which the light emitting element is disposed;
- a covering material that covers the light emitting element, the covering material having a refractive index between a refractive index of the light emitting element and a refractive index of air;
- a reflection wall that surrounds the light emitting element and is in contact with the surface of the light source substrate;
- a wavelength conversion sheet that faces the light source substrate;
- a diffusion reflection sheet that is in contact with the reflection wall and includes a plurality of particles and permits entrance of emitted light from the light emitting element and reflected light from the reflection wall, wherein the diffusion reflection sheet is formed as a single resin sheet printed with ink including the plurality of particles, and wherein the diffusion reflection sheet is disposed between the wavelength conversion sheet and the light source substrate;
- and
- an optical sheet provided between the diffusion reflection sheet and the wavelength conversion sheet.
6 more elements
A lighting device provided with a light emitting device,
- the light emitting device comprising:
- a light emitting element comprising an LED (Light Emitting Diode);
- a light source substrate having a surface on which the light emitting element is disposed;
- a covering material that covers the light emitting element, the covering material having a refractive index between a refractive index of the light emitting element and a refractive index of air;
- a reflection wall that surrounds the light emitting element and is in contact with the surface of the light source substrate;
- a wavelength conversion sheet that faces the light source substrate;
- a diffusion reflection sheet that is in contact with the reflection wall and includes a plurality of particles and permits entrance of emitted light from the light emitting element and reflected light from the reflection wall, wherein the diffusion reflection sheet is formed as a single resin sheet printed with ink including the plurality of particles, and wherein the diffusion reflection sheet is disposed between the wavelength conversion sheet and the light source substrate;
- and
- an optical sheet provided between the diffusion reflection sheet and the wavelength conversion sheet.
6 more elements
Dependencies are inferred from the claim text.