A ceiling light apparatus includes a fixing bracket, a main housing and a light source. The fixing bracket is firstly fixed on a ceiling. The fixing bracket has a first end, a main part and a second end. The main housing includes a back cover. The back cover has a first connector and a second connector. When the main housing is to be attached to the fixing bracket, the first end is firstly attached to the first connector and then the first end is rotated with respect to the first connector to move the second end to approach to the second connector for elastically locking the second end to the second connector. The light source is enclosed by the main housing for emitting a light via a light opening of the main housing.

A light guide module includes a light guide element and a light source. The light guide element includes a first light guide layer and a second light guide layer. The second light guide layer is disposed on the first light guide layer. The refractive index of the first light guide layer is greater than the refractive index of the second light guide layer. The light source is disposed in the first light guide layer.

An electronic device includes a substrate film having a first side and a second side, and a number of light sources configured to emit light. A plastic lightguide layer is molded onto the first side of the substrate film. The plastic lightguide layer being of optically at least translucent material to transmit light. The device also includes a masking layer provided on the outer surface of the plastic lightguide layer. The masking layer defines a window for letting the light emitted by the embedded light sources to pass through the masking layer towards the environment.

A backlight assembly, a backlight unit, and a display panel are provided. The backlight assembly includes a back plate, a light source plate, at least one buffer member, and at least one heat dissipation component. The back plate is on a side of the light source plate distal to a light exit side thereof, both the at least one buffer member and the at least one heat dissipation component is between the back plate and the light source plate, the heat dissipation component extends from a side of the buffer member proximal to the light source plate to a side of the buffer member proximal to the back plate, and the surfaces, which are in contact with each other, of two ones of each heat dissipation member, each buffer member, the back plate and the light source plate, are fixed to each other.

A display device according to the present disclosure can include a display panel, a backlight assembly providing light toward the display panel, a set cover including a rear cover part and a side cover part, wherein the rear cover part covers a rear surface of the backlight assembly and the side cover part extending from the rear cover part covers a side surface of the backlight assembly, and a guide panel coupled to the set cover and supporting edges of the display panel. The set cover can be composed of plastic, and the rear cover part and the side cover part can have an integrally formed shape and can be exposed to outside.

A backlight module includes a glass substrate, a light-outputting sheet, a light guide plate, and a reflective sheet. The light-outputting sheet is disposed under the glass substrate and has a light-outputting region and a light-shielding region. The light-outputting region is disposed corresponding to the glass substrate. The light-shielding region is disposed corresponding to an outer periphery of the glass substrate. The light guide plate is disposed under the light-outputting sheet and has a light guide region and a light mixing region. The light guide region is disposed corresponding to the light-outputting region. The light mixing region is configured to receive light of a light-emitting element and guide the light to the light guide region. The light leaves the light guide region and then sequentially propagates through the light-outputting region and the glass substrate. The reflective sheet is disposed under the light guide plate.

A display which thickness is allowed to be reduced is provided. A display includes: a display panel; and a back-face member having rigidity and provided on a back face of the display panel, the back-face member covering the back face, or the back face and other part of the display panel.

A personal display device for displaying virtual images to a wearer. The personal display device includes a frame having a right temple section, a left temple section, a right rear section, a left rear section, a right eye see-through section, and a left eye see-through section; a projection display device connected to the frame for projecting an image to the wearer; at least one waveguide stack module connected to the frame for propagating image-bearing light beams along a length of the at least one waveguide stack module, the at least one waveguide stack module being configured to receive the image from the projection display device and detected touch motions of the wearer sensed by the touchpad including sensing directions of the touch motions of the wearer.

A panel light apparatus includes an optical guiding unit, a light source, a support base and a stop unit. The light source emits a original light passing through the optical guiding unit via an entrance side of the optical guiding unit. The stop unit keeps at least a first distance between the entrance side of the optical guiding unit and the light source when the optical guiding unit has a thermal expansion so that the entrance side of the optical guiding unit expands toward the light source.

A joint layout is provided for the firm bonding of components by means of a light-activated joining agent. A light guide element is arranged at least in sections in a joint gap between the components. The light guide element is embedded into the joining agent in the joint gap, and light for activating the joining agent can be outcoupled from the light guide element in the joint gap. In this context, at least one spacer is arranged in the joint gap between the light guide element and at least one of the components.