Abstract: A display device includes a light source array including a plurality of light sources where at least one of the plurality of light sources is selectively driven, a spatial light modulator for modulating light from the light source array to form image light, a focusing optical system for focusing the image light formed by the spatial light modulator at a position in a predetermined eye box, a micro mirror array arranged in an optical path formed in the focusing optical system and including a plurality of mirror cells. The plurality of mirror cells are controlled to be in an ON state in that light is reflected in a direction toward an inside of the eye box or to be in an OFF state in that light is reflected in a direction toward an outside of the eye box.

Abstract: A display device including a meta surface is provided. The display device includes an image provider comprising a spatial light modulator configured to modulate light according to image information, wherein the image provider is configured to provide the light comprising the image information; an optical element configured to focus the light from the image provider; and a meta surface deflector positioned between the image provider and the optical element to deflect the light, and change a deflection direction of the light according to a polarization of the light so that a first position of the light of a first polarization focused by the optical element is different than a second position of the light of a second polarization orthogonal to the first polarization focused by the optical element.

Abstract: Provided is a method of generating a computer-generated hologram (CGH), the method including obtaining complex data including amplitude data of object data and phase data of the object data corresponding to a spatial light modulator (SLM) plane by propagating the object data from an image plane to the SLM plane, encoding the complex data into encoded amplitude data, and generating a CGH based on the object data including the encoded amplitude data.

Abstract: A glass stack structure includes: a carrier plate having a width in a first direction and a length in a second direction; a stack glass on the carrier plate and including mother glasses sequentially stacked therein; adhesive lines including a high viscous material and arranged at peripheral portions of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, and the adhesive lines includes wave lines extending in the second direction and spaced apart from each other in the first direction and linear lines extending in the first direction and spaced apart from each other in the second direction; and an adhesive layer including a low viscous material and covering a cell area of the carrier plate and the mother glasses to adhere the carrier plate to the mother glasses, where the cell area is defined by the wave lines and the linear lines.

Abstract: An image display device includes a main light source configured to emit a first light; a display panel configured to modulate the first light to add image information to the first light; a holographic optical element (HOE) configured to diffract the first light emitted from the display panel to make the first light travel to a first region to generate a main image; a first optical system provided on a traveling path of the first light between the main light source and the HOE, the first optical system being configured to change the traveling path of the first light to be incident on the HOE along a first path; an auxiliary light source configured to emit a second light; and a second optical system provided on a traveling path of the second light, the second optical system being configured to change a traveling path of the second light to be incident on the HOE along a second path different from the first path.

Abstract: Provided is a multi-image display apparatus including a light source configured to emit light, a spatial light modulator configured to modulate the light emitted by the light source and generate image light, a first optical system configured to deliver the image light through a first light path and a second light path that is not parallel with the first light path, and a second optical system configured to deliver external light and the image light delivered through the second light path to a pupil of a viewer, through a third light path that is not parallel with the second light path, wherein the second optical system includes a steering optical device provided at a crossing point of the second light path and the third light path and configured to be two-axis rotated

Abstract: A holographic display apparatus and a holographic display method are provided. The holographic display apparatus determines a representative depth from 3D image data; calculates a computer generated hologram (CGH) corresponding to the representative depth on the 3D image data; obtains the modulated CGH by modulating a phase of the CGH to increase an eye box; modulates a light according to the modulated CGH and generates a hologram image; and forms the generated hologram image at the representative depth.

Abstract: Disclosed are a method and a system for processing a computer-generated hologram (CGH). The system for processing a CGH includes a CGH generation apparatus and a display apparatus. The CGH generation apparatus repeatedly performs a process of propagating object data from a first depth layer to a second depth layer, changing amplitude data of the object data to second predefined amplitude data, back-propagating the object data from the second depth layer to the first depth layer, and changing the amplitude data of the object data to first predefined amplitude data, and generates a CGH by using the object data.

Abstract: A head-up display system includes an image generating apparatus configured to emit light having a first polarization and including image information; a polarization beam splitter provided on an optical path of the light having the first polarization and configured to transmit the light having the first polarization; a wave plate configured to transmit the light transmitted through the polarization beam splitter while changing a phase of the light; and a mirror configured to reflect the light sequentially transmitted through the polarization beam splitter and the wave plate back to the polarization beam splitter through the wave plate. The polarization beam splitter may reflect light having a second polarization that is different from the first polarization and obtained by transmitting the light reflected by the mirror back through the wave plate.

Abstract: Provided is a method for manufacturing an electronic device. The method includes providing a panel to a stage, providing a circuit board, aligning the circuit board so that first pads of the circuit board face a first pad area of the panel and second pads of the circuit board face a second pad area of the panel, and compressing a first portion of the circuit board on which the first pads are arranged to the first pad area of the panel. The aligning of the circuit board occurs via by external contact on one surface of the first portion of the circuit board and one surface of the second portion of the circuit board.

Abstract: Provided is a method for manufacturing an electronic device. The method includes providing a panel to a stage, providing a circuit board, aligning the circuit board so that first pads of the circuit board face a first pad area of the panel and second pads of the circuit board face a second pad area of the panel, and compressing a first portion of the circuit board on which the first pads are arranged to the first pad area of the panel. The aligning of the circuit board occurs via by external contact on one surface of the first portion of the circuit board and one surface of the second portion of the circuit board.

Abstract: A method of assembling a sub-frame of a vehicle with the front side member of the vehicle includes integrally forming a supporting end of a mounting nut that protrudes in a radial direction in a center of an external circumference of the mounting nut, forming a through hole in a lower surface of the front side member, forming a seat as a groove in an internal surface of the through hole, inserting a lower end of the mounting nut into the through hole so that the supporting end is supported by a circumference of the through hole, settling a head of the mounting nut in the seat, and welding the supporting end and the head along the circumference of the through hole and a side of the seat to assemble the sub-frame to the front side member.

Abstract: A mounting unit for a sub-frame of a vehicle is provided. The mounting unit is used for engaging a front side member with the vehicle's sub-frame. The mounting unit includes a welding seat that is formed as a groove on a lower side of the front side member. The mounting unit further includes a mounting nut assembled with the front side member, a welding flange integrated with an external circumference and a head of the mounting nut and inserted into the welding seat to be combined with the welding seat, and a member seat that is formed outside the welding flange and with which a fender upper connecting member is combined.

Abstract: A method of assembling a sub-frame of a vehicle with the front side member of the vehicle includes integrally forming a supporting end of a mounting nut that protrudes in a radial direction in a center of an external circumference of the mounting nut, forming a through hole in a lower surface of the front side member, forming a seat as a groove in an internal surface of the through hole, inserting a lower end of the mounting nut into the through hole so that the supporting end is supported by a circumference of the through hole, settling a head of the mounting nut in the seat, and welding the supporting end and the head along the circumference of the through hole and a side of the seat to assemble the sub-frame to the front side member.

Abstract: A mounting unit for a sub-frame of a vehicle is provided. The mounting unit is used for engaging a front side member with the vehicle's sub-frame. The mounting unit includes a welding seat that is formed as a groove on a lower side of the front side member. The mounting unit further includes a mounting nut assembled with the front side member, a welding flange integrated with an external circumference and a head of the mounting nut and inserted into the welding seat to be combined with the welding seat, and a member seat that is formed outside the welding flange and with which a fender upper connecting member is combined.