A display device includes a backlight module and a display module. The backlight module includes a plurality of light emitting units, a base plate and at least one controller. The light emitting units are disposed on a first surface of the base plate, the controller is disposed on a second surface of the base plate, the second surface is opposite to the first surface, and at least one of the light emitting units is electrically connected to the controller. The display module is disposed on the first surface, and the light emitting units are disposed between the display module and the base plate. The backlight module includes a covering layer, an optical film, and a plurality of pins, the covering layer is disposed on the first surface of the base plate, and the pins are disposed between the covering layer and the optical film.

A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; first and second prism array layers stacked with each other; a dichroic layer positioned between the first and second prism array layers and the plurality of light sources; and a wavelength conversion layer positioned between the first and second prism array layers and the dichroic layer.

Ghost image formation due to reflections of image light by a display panel to an ocular lens may be suppressed by ensuring that the image light reflected by the lens does not get reflected by the display panel back towards the lens. To that end, the display panel may include a quarter-wave birefringent layer between the top polarizer of the display panel and a layer inside the display panel that the image light reflects from, such as a black grid layer or an active matrix layer.

Disclosed are a display panel and a display device. The display panel includes a panel body, the panel body including a display area and a non-display area around a periphery of the display area; and a decoration portion provided on the panel body and located in the display area.

Disclosed are a display panel and a display device. The display panel includes a panel body, the panel body including a display area and a non-display area around a periphery of the display area; and a decoration portion provided on the panel body and located in the display area.

According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region, and the central wavelength is different from an emission peak wavelength of the image display device by 5 nm or greater. The mirror with an image display function of the invention is capable of displaying a bright image.

Ghost image formation due to reflections of image light by a display panel to an ocular lens may be suppressed by ensuring that the image light reflected by the lens does not get reflected by the display panel back towards the lens. To that end, the display panel may include a quarter-wave birefringent layer between the top polarizer of the display panel and a layer inside the display panel that the image light reflects from, such as a black grid layer or an active matrix layer.

A controller for use in a wet environment such as an ablutionary setting includes a display for displaying information related to the operation of a fluid delivery system. The display includes a light source, a semi-transparent layer, and a touch interface configured to provide an input to the controller. The light source and the semi-transparent layer are configured such that the semi-transparent layer absorbs or reflects light transmitted towards the light source and allows light transmitted from the light source to be transmitted from the display, such that the light source appears hidden when light is not transmitted from the light source.

A switchable one-way mirror device dividing first and second spaces includes a switchable electro-optic layer facing the second space and configured to be electronically switchable between a transmissive state and one or more opaque states, and a partial reflector incorporated within or adjacent the switchable electro-optic layer and facing the first space and configured to partially reflect light. The switchable one-way mirror partially transmits a first light going from the first space to the second space, and a second light going from the second space to the first space. When the switchable electro-optic layer is in an opaque state, transmission of light through the device is reduced thereby changing the ratio between the transmission of the second light to the first space and the reflection of the first light by the partial reflector resulting in reduced visibility of the second space by a viewer in the first space.

A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; first and second prism array layers stacked with each other; a dichroic layer positioned between the first and second prism array layers and the plurality of light sources; and a wavelength conversion layer positioned between the first and second prism array layers and the dichroic layer.