In devices with flexible displays, multilayer adhesive stacks may be included. A multilayer adhesive may attach a flexible display panel to the display cover layer in an electronic device. Including multiple layers of adhesive in the adhesive stack (as opposed to a single layer) provides more degrees of freedom for the tuning and optimization of the properties of the adhesive stack. The multilayer adhesive stack therefore has better performance than if only a single layer of adhesive is used. The multilayer adhesive stack may include one or more layers of soft adhesive, hard adhesive, hard elastomer, hard polymer, and/or glass to optimize the mechanical and optical performance of the multilayer adhesive stack. Soft adhesive layers may be included to optimize lateral decoupling (e.g., during folding and unfolding) of the adhesive stack. Harder layers may be included to provide rigidity and prevent denting during impact events.

An object of the present invention is to provide an optical film which is excellent in the adhesiveness between a polymer support and a photo alignment film and in which a liquid crystal compound having reverse wavelength dispersibility is uniformly aligned. The optical film is obtained by laminating, in the following order: a polymer support containing an additive; a photo alignment film; and an optically anisotropic film, wherein the optically anisotropic film is formed of a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound having reverse wavelength dispersibility, and an amount of a component derived from the additive of the polymer support, which is contained in a boundary region with the optically anisotropic film in the photo alignment film is 0.10 to 0.50 mass % with respect to a total mass of the photo alignment film.

Embodiments of the present disclosure provide a display substrate motherboard and a manufacturing method and a cutting method thereof, a display substrate and a display device. The display substrate motherboard includes a preset cutting position, a back film and an adhesive layer disposed on the back film, the adhesive layer includes: a first adhesive layer corresponding to the preset cutting position; a second adhesive layer disposed on two sides of the first adhesive layer in a direction parallel to the back film; and a first light blocking layer disposed between the first adhesive layer and the second adhesive layer, wherein the first light blocking layer is configured to reduce light entering the second adhesive layer through the first light blocking layer after being incident from the first adhesive layer.

Embodiments of the present disclosure provide a display substrate motherboard and a manufacturing method and a cutting method thereof, a display substrate and a display device. The display substrate motherboard includes a preset cutting position, a back film and an adhesive layer disposed on the back film, the adhesive layer includes: a first adhesive layer corresponding to the preset cutting position; a second adhesive layer disposed on two sides of the first adhesive layer in a direction parallel to the back film; and a first light blocking layer disposed between the first adhesive layer and the second adhesive layer, wherein the first light blocking layer is configured to reduce light entering the second adhesive layer through the first light blocking layer after being incident from the first adhesive layer.

A multi-layer identification patch includes a reflective background layer comprising a front side to face away from a garment when the multi-layer identification patch is affixed to the garment, and a mask layer secured over the front side of the reflective background layer. The mask layer comprises (a) an opaque layer of flexible polyvinyl chloride (PVC) and (b) a void in the opaque layer of flexible PVC. The void has a shape that forms an identification symbol. The opaque layer of flexible PVC is secured over a first portion of the reflective background layer, thereby fixing the void that forms the identification symbol over a second portion of the reflective background layer, and thereby enabling the second portion of the reflective background layer to reflect light through the void in the shape of the identification symbol. Other embodiments are described and claimed.

A multi-layer identification patch includes a reflective background layer comprising a front side to face away from a garment when the multi-layer identification patch is affixed to the garment, and a mask layer secured over the front side of the reflective background layer. The mask layer comprises (a) an opaque layer of flexible polyvinyl chloride (PVC) and (b) a void in the opaque layer of flexible PVC. The void has a shape that forms an identification symbol. The opaque layer of flexible PVC is secured over a first portion of the reflective background layer, thereby fixing the void that forms the identification symbol over a second portion of the reflective background layer, and thereby enabling the second portion of the reflective background layer to reflect light through the void in the shape of the identification symbol. Other embodiments are described and claimed.

Provided is a composition with which a film that allows transmission of infrared light in a state where noise generated from visible light is small can be formed. In addition, provided are a film, a laminate, an infrared transmitting filter, a solid image pickup element, and an infrared sensor. This composition includes: a coloring material that allows transmission of infrared light and shields visible light; an infrared absorber; and a curable compound, in which the infrared absorber includes a material that shields light in a wavelength range of longer than 1000 nm and 1200 nm or shorter. In the composition, a ratio A/B of a minimum value A of an absorbance of the composition in a wavelength range of 400 to 1100 nm to a maximum value B of an absorbance of the composition in a wavelength range of 1400 to 1500 nm is 4.5 or higher.

Provided is a composition with which a film that allows transmission of infrared light in a state where noise generated from visible light is small can be formed. In addition, provided are a film, a laminate, an infrared transmitting filter, a solid image pickup element, and an infrared sensor. This composition includes: a coloring material that allows transmission of infrared light and shields visible light; an infrared absorber; and a curable compound, in which the infrared absorber includes a material that shields light in a wavelength range of longer than 1000 nm and 1200 nm or shorter. In the composition, a ratio A/B of a minimum value A of an absorbance of the composition in a wavelength range of 400 to 1100 nm to a maximum value B of an absorbance of the composition in a wavelength range of 1400 to 1500 nm is 4.5 or higher.

A color developing structure that exhibits good color development and ensures a desired transmittance while diffusing reflected light in multiple directions. A color developing structure includes a concave-convex layer in which a first surface has a concave-convex structure, and a reflective layer formed on the first surface to extend along the concave-convex structure. A convex surface of the concave-convex structure has a first pattern composed of a plurality of strip portions in plan view. The strip portion has a width in a first direction and a length in a second direction perpendicular to the first direction. The width is smaller than the wavelength of the incident light, and a standard deviation of the lengths of the plurality of strip portions is larger than a standard deviation of the widths.

A glass lamination film includes a tinted zone in which one or more colored layers are disposed and a clear zone. The tinted zone includes a colored zone with a fixed color and a color change zone disposed between the colored zone and the clear zone, and a color of the color change zone has a varying density. A fade off zone has relative transmittance (Rt, %) of 30 to 80%. The color change zone includes the fade off zone having a distance of 15 to 25 mm. The colored layer includes a first colored layer and a second colored layer disposed below the first colored layer. An amount of plasticizer in the second colored layer is larger than an amount of the plasticizer in the first colored layer.