Sharp Display Technology Corporation

Satoshi Tsubooka

Shugo Yagi

Yuuichi Kanbayashi

Junichi Masuda

An illumination device is provided with a first light source, a first light guide plate including a second main surface, a second light source, a second light guide plate including a fourth main surface, a third light source, an optical member, and a first sheet. The main surfaces of the first light guide plate and the second light guide plate overlap each other and the first light guide plate and the second light guide plate are disposed on the opposite side of the first sheet from the optical member. The first sheet includes two first light blocking portions and a first light-transmitting portion. The first light reflection portion is selectively provided in a first region in the first opposite main surface, and the second light reflection portion is provided at least in a fourth region in the second opposite main surface.

Illumination device including a sheet having light blocking portions and light transmitting portions and display device including the same

An illumination device that includes a light source, a light guide plate featuring a first end face, a first main surface, a second main surface, and a first prism sheet is provided. The first prism sheet includes a third main surface, facing the second main surface of the light guide plate, and a fourth main surface. The second main surface of the light guide plate is provided with a first inclined surface that has an inclination rising from a side opposite the light source side toward the light source side in a first direction. The fourth main surface of the first prism sheet is provided with multiple first prisms extending along the first direction and disposed along a second direction. Each first prism includes a first base parallel to the second direction, and a pair of first oblique sides rising from both ends of the first base.

Illumination device including third prism sheet and display device including the same

An illumination device includes a plurality of light sources arranged in a row, a light guide plate having a plate shape and including a first end face at an outer peripheral end face of the light guide plate and a first main surface included in a pair of main surfaces of the light guide plate, the first end face facing the plurality of light sources and being configured to receive incident light, the first main surface being configured to emit light, and a plurality of first lenses disposed at the first main surface, arranged along a first direction, and extending along a second direction, the first direction being an arrangement direction of the plurality of light sources, the second direction intersecting the first direction and extending along the first main surface.

Illumination device and display device

According to an aspect of the disclosure, an illumination device includes: a first light source; a first light guide plate including at least a part of an outer circumferential end face as a first end face configured to face the first light source and receive incident light, a first main surface, and a second main surface; a first sheet including one main surface as a third main surface configured to face the first main surface and a fourth main surface; a second light source; and a second light guide plate including at least a part of an outer circumferential end face as a second end face configured to face the second light source, a fifth main surface, and a sixth main surface configured to face the fourth main surface.

According to an aspect of the disclosure, an illumination device includes: a first sheet including a first light entering main surface, a first light emission main surface, two first light blocking portions disposed at an interval in a first direction, and a first light-transmitting portion disposed between the two first light blocking portions; a second sheet including a second light entering main surface facing the first light emission main surface, a second light emission main surface, and a first lens; and a third sheet including a third light entering main surface facing the second light emission main surface, a third light emission main surface, two second light blocking portions disposed at an interval in the first direction, and a second light-transmitting portion disposed between the two second light blocking portions.

Illumination device including first to third sheets and display device including the same

A display device includes a display panel, an illumination device, and a control unit, in which, when performing display in a first display mode, the control unit corrects an image signal to generate a correction signal, writes a first image based on the correction signal in the display panel, leaves a second light source unlit, and selectively turns on a plurality of first light sources based on the correction signal, and when performing display in a second display mode, the control unit generates a correction signal, writes a first image in the display panel, leaves the second light source unlit, and selectively turns on the plurality of first light sources based on the correction signal, in a first display period, and writes a second image based on the image signal in the display panel and turns on at least the second light source, in a second display period.

Display device

A backlight device includes at least a plurality of LEDs arranged in a row, a light guide plate including at least a light entering end face having a plate shape, and a light refracting portion configured with a plurality of unit light refracting portions arranged side by side on the light entering end face along an alignment direction of the plurality of LEDs, wherein in the light refracting portion, an occupancy rate occupied by the unit light refracting portion in an end side portion of the light entering end face in the alignment direction is made lower than an occupancy rate occupied by the unit light refracting portion in a central side portion of the light entering end face in the alignment direction.

Growing community of inventors

Kameyama, Japan

Satoshi Tsubooka