A transparent display apparatus is provided that is constructed to transmit or block a light of images selectively according to a supply of electric power to a conventional transparent organic light emitting diode. The transparent display apparatus includes a transparent organic light emitting diode having a glass substrate, a transparent anode, a hole transport layer, an emitting layer, an electron transport layer and a transparent cathode. The transparent display apparatus includes an insulating layer stacked on the transparent cathode, and first and second transparent ITOs stacked on the insulating layer to deliver electromotive force onto an entire surface and to transmit or block the light of images according to the on/off state of a power source. The transparent display apparatus also includes an electro chromic layer provided between the first and the second transparent ITOs and including transparent and colorless chemicals. The electro chromic layer forms a color through oxidation-reduction reaction of the chemicals according to the on/off state of the power source to absorb or block the light of images. The transparent display apparatus further includes a substrate stacked on the second transparent ITO.

It is an object to achieve downsizing and a thin shape of a display module and an electronic device provided with the display module. The display module includes a first display panel in which a first display screen is formed on one main side; and a second display panel that is smaller than and overlapped with the first display panel, in which a second display screen is formed on an opposite side of the one main side. The display module includes, over a sealing substrate of the first display panel and/or the second display panel, at least one integrated circuit, which is connected to input terminals of the first display panel and the second display panel and controls operation of the both panels, arranged in a peripheral portion of the second display panel, which is a surface on an opposite side of a display surface of the first display panel.

A display panel is disclosed. The display panel includes a substrate, a plurality of first unit pixel and a plurality of second unit pixel. The substrate includes a first region and a second region extending in a first direction. The plurality of first unit pixels is disposed in the first region of the substrate. The first unit pixel has a first area. The plurality of second unit pixel is disposed in the second region of the substrate. The second unit pixel has a second area which is smaller than the first area.

Disclosed are a light emitting diode display device and a multi-screen display device using the same, which include a reduced or minimized bezel area. The light emitting diode display device includes a substrate including a first display area and a second display area outside of the first display area, a plurality of first unit pixels in the first display area, the plurality of first unit pixels each including a plurality of subpixels each including a micro light emitting device, and a plurality of second unit pixels in the second display area adjacent an edge of the substrate. A distance between the second unit pixel and an outer surface of the substrate is equal to or less than half of a reference pixel pitch at which the plurality of first unit pixels are arranged.

Provided is a display device including: a bottom member; a display panel on the bottom member, the display panel configured to emit light; a top member on the display panel; a touch screen panel on the top member; and a groove region formed by removing at least a portion of at least one of the top member and the bottom member at a bent portion of the display device.

An OLED display panel, a method of forming a display panel and a display device are provided. An OLED display panel, including a transparent base and a plurality of pixel repeating units arranged on the transparent base in an array distribution, where at least one of the pixel repeating units includes: a display function layer and a specular function layer between the display function layer and the transparent base; where the specular function layer includes a specular reflection area and a light-transmitting area; the display function layer includes a first pixel area and a second pixel area, the first pixel area is provided with a first OLED light-emitting unit, and the first OLED light-emitting unit is configured to emit light in a direction away from the transparent base; the second pixel area is provided with a second OLED light-emitting unit, the second OLED light-emitting unit is configured to emit light toward the transparent base, and the emitted light is able to pass through the light-transmitting area.

A display device includes a substrate on which a display area including a plurality of pixels and a non-display area surrounding the display area are defined, a first voltage line disposed on the substrate in the non-display area, where the first voltage line provides a first voltage to the pixels, a second voltage line disposed on the substrate in the non-display area, where the second voltage line provides a second voltage to the pixels, and a first demux circuit area and a second demux circuit area disposed on the substrate in the non-display area, where the first demux circuit area and the second demux circuit area transmit data signals to the pixels. The first voltage line passes an area between the first demux circuit area and the second demux circuit area.

An electronic device may have a display overlapped by a cover layer. Portions of the surface of the display and cover layer may have curved profiles. The display may include a flexible substrate and may have bent edge portions protruding from a central region. Gaps may be formed between regions of pixels on a common substrate or between separate display panels. An image transport layer formed from a coherent fiber bundle or a layer of Anderson localization material configured to exhibit two-dimensional transverse Anderson localization of light may have an input surface that receives an image from adjacent display pixels and an output surface on which the image is displayed. The output surface may have a curved profile and may exhibit compound curvature. The input surface may have a profile with curved portions or other shapes. Image transport layers can be used to cover gaps between sets of pixels.

A full-screen image display and an optical assembly thereof are provided. The full-screen image display includes a first display module and a second display module. The first display module is an organic LED display, a liquid crystal display or an LED display for providing a first image, and the second display module is an LED display for providing a second image. The first display module and the second display module are adjacent or connected to each other, and the first image and the second image are combined to form a continuous image. The second display module includes a circuit substrate, an image display unit disposed on the circuit substrate, and a plurality of electronic units disposed on the circuit substrate. The image display unit includes a plurality of LED chips disposed on the circuit substrate, and the second image is provided by the LED chips.

A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.