The present disclosure provides an optical adhesive layer, a stretchable display device and a preparing method for the optical adhesive layer. The optical adhesive layer includes: an edge region enclosing a hollow portion; a plurality of block regions distributed in the hollow portion along a first direction and a second direction; and connection ribs connecting the block regions to the edge region, wherein the connection ribs are distributed in the hollow portion in a net form, and the connection ribs include a plurality of first ribs, second ribs, and third ribs connecting the block regions with the first and second ribs.

A photoelectric conversion element comprises: a photoelectric conversion layer; a first compound layer including a first supporting member and a first compound, the first compound being supported by the first supporting member, being not in contact with the photoelectric conversion layer, and being liquid or gelatinous in an environment to use the element; and a second compound layer including a second supporting member and a second compound, the second compound being supported by the second supporting member, being not in contact with the photoelectric conversion layer and the first compound, and being liquid or gelatinous in the environment.

A solar cell system and a flexible solar panel are disclosed herein. The solar cell system includes a glass housing, a set of rows of solar cells each defining a front side and a rear side and arranged within the glass housing. The solar cell system can also include a reflective element disposed in the glass housing and facing the rear side of the set of rows of solar cells and a first terminal coupled to a first end of the set of rows of solar cells, traversing through and sealed against the first end of the glass housing. The solar cell system can be configured with other solar cell systems into the flexible solar panel that is deployable in a wide range of potential applications.

An inward foldable screen electronic device having a flexible display that includes an encapsulation layer, a light-emitting layer, a substrate, a base film, and a support sheet that are sequentially stacked. An interface exists between the encapsulation layer and the light-emitting layer, and the support sheet has a complete surface. The encapsulation layer and the light-emitting layer of the flexible display are not prone to lift off from each other.

An electronic device is disclosed. An electronic device may include: a foldable housing including a hinge, a first housing connected to the hinge and including a first surface oriented in a first direction and a second surface oriented in a second direction opposite the first direction, a second housing connected to the hinge and including a third surface oriented in a third direction and a fourth surface oriented in a fourth direction opposite the third direction, wherein the second housing is configured to be folded on the first housing about the hinge, and side surfaces surrounding at least a part of a space between the first surface and the second surface and at least a part of a space between the third surface and the fourth surface; and a display having ductility and extending from the first surface to the third surface to configure the first surface and the third surface, wherein the foldable housing is disposed along an edge of the display and includes bezels extending from respective side surfaces to an active area of the display, and wherein the bezels include, in an area configuring the first surface and the third surface of the foldable housing, extensions spaced apart from edge portions of the display, and support portions disposed between the edge of the display and the extensions to be in contact with the edge portions of the display.

A manufacturing method of an adhesive layer includes: providing a preliminary adhesive layer, attaching a mask to a first area portion of the preliminary adhesive layer, and thereby, provide a second area portion of the preliminary adhesive layer that is adjacent to the first area portion and to which the mask is not attached, to provide an adhesive layer that exhibits good folding reliability. In addition, a display device may exhibit good folding reliability characteristics by including the adhesive layer from which an adhesion force of a folding area is reduced between a supporting member and a display panel of the display device.

According to various embodiments of the disclosure, an electronic device may include: a housing, a display viewable to the outside of the electronic device, wherein the display includes a plurality of layers at least one of which includes an opening area, an optical sensor at least a portion of which is disposed in the opening area, and a printed pattern disposed to correspond to the opening area and having a ring shape, wherein the printed pattern may be disposed on a top surface or a bottom surface of a first layer that does not include the opening area among the plurality of layers, and wherein a portion of the ring shape may have a first height, and a remaining portion of the ring shape may have a second height higher than the first height.

An optical laminate includes two substrates each of which has a tensile modulus in a range from 2,000 MPa to 7,500 MPa, and an adhesive layer interposed between the substrates. A storage modulus at 25° C. of the adhesive layer is 100 kPa or less, and a storage modulus at −20° C. of the adhesive layer is equal to or less than three times the storage modulus at 25° C. of the adhesive layer. The optical laminate and an image display device including the optical laminate may have an improved flexible property at various temperature ranges and may be capable of minimizing cracks when being bent.

Provided is a display device or a display system capable of displaying images along a curved surface, a display device or a display system capable of displaying images seamlessly in the form of a ring, or a display device or a display system that is suitable for increasing in size. The display device includes a display panel. The display panel includes a first part and a second part and is flexible. The first part can display images. The second part can transmit visible light. The display panel is curved so that the second part and the first part overlap with each other.

A display device including: a plurality of unit portions repeatedly arranged in a first direction and a second direction, wherein the second direction is different from the first direction; a plurality of display units respectively arranged above the plurality of unit portions; and a plurality of encapsulation layers respectively encapsulating the plurality of display units, wherein each of the plurality of unit portions includes an island where a display unit and an encapsulation layer are located, and at least one connection unit connected to the island, and islands of two unit portions adjacent to each other are spaced apart from each other, and connection units of the two unit portions adjacent to each other are connected to each other.