Seiko Epson Corporation

Akio Fukase

Takeshi Koshihara

Ryoichi Nozawa

Shinichi Iwata

Atsushi Amano

Hidetoshi Yamamoto

Masatoshi Yonekubo

Kunihiko Yano

Mitsutaka Ide

Toshiyuki Noguchi

Takashi Takeda

Yuki Hanamura

Koya Shiratori

Hirokazu Yanagihara

Hiroyuki Tatsugi

Shunji Tomioka

A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.

Light-emitting device and electronic apparatus

The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.

Cross dichroic prism, image display module, and image display device

A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.

Head-mounted display apparatus

An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.

Image display device

A display module of the present disclosure includes a display module main body and a housing. The display module main body includes a first, a second display element, and a prism. The housing includes a first, and a second frame. The first frame holds the first display element in a state in which the prism is positioned between a first and a second plate portion, and in which a third plate portion is in contact with the first display element and faces a first surface, and the second frame holds the second display element in a state in which the prism is positioned between a fourth and a fifth plate portion, and in which a sixth plate portion is in contact with the second display element and faces a second surface.

Display module and display device

An optical device combines light emitted from first and second display panels. The first display panel emits first color light from a plurality of pixels. The second display panel emits second color light having a different wavelength range from the first color light from a plurality of pixels and emits third color light having a different wavelength range from the second color light from a plurality of pixels.

Optical device and display apparatus

Provided is a light emitting device configured to suppress deterioration in a balance of white light emission and increase a service life. The light emitting device includes a red light emitting layer, a blue light emitting layer, a green light emitting layer, a first intermediate layer configured to adjust a transfer of holes and electrons between the red light emitting layer and the blue light emitting layer, and a second intermediate layer configured to adjust the transfer of holes and electrons between the blue light emitting layer and the green light emitting layer. The intermediate layers and the blue light emitting layer each contain an assist dopant material, a concentration of the assist dopant material in the intermediate layers being greater than a concentration of the assist dopant material in the blue light emitting layer.

Growing community of inventors

Chino, Japan

Akio Fukase