55 results about "Optical bonding" patented technology

A display device may include a display layer including a light emitting element including a first electrode, a second electrode, and a light emitting layer electrically connected to the first electrode and the second electrode, and a sensor layer on the display layer, the sensor layer including a conductive pattern layer, a protective layer at least partially on the conductive pattern layer, and an optical adhesive layer on the protective layer, the optical adhesive layer forming an interface with the protective layer and including an optical adhesive material. The protective layer may include a first protective layer covering the conductive pattern layer and a second protective layer spaced from the first protective layer and at least partially overlapping the light emitting layer in a plan view, and the second protective layer may include an edge portion which does not overlap the light emitting layer in a plan view.

The water-peelable optical adhesive sheet according to the present invention has an adhesive force (Fw1) of 0.5 N / 10 mm or less in a prescribed water-peelable test, and an adhesive force (Fz) of 1.0 N / 10 mm or more in a prescribed high-temperature and high-humidity peelable test.

This invention provides a directly coupled stacked structure for improved image quality in optical devices. [Solution] Optical surfaces are planarized and plasma activated to laminate them together, and then a direct bond is formed between the two surfaces without adhesive or an adhesive layer. This process provides an improved optical element with higher image brightness, lower light scattering, better resolution, and higher image fidelity. Direct bonding also provides a heat-resistant interface that can withstand much higher temperatures than conventional optical adhesives. Exemplary processes can be used to manufacture many types of improved optical components such as improved laminated lenses, mirrors, beam splitters, collimators, prism systems, optical conduits, and specular waveguides for smart glasses and head-up displays (HUDs), which provide better image quality and elimination of dark lines of sight that are apparent to the human observer when conventional adhesives are used in conventional lamination.

This application relates to a touch display module integrating biosensing functionality, belonging to the technical field of smart wearable devices. The touch display module includes an integrated driver and, from top to bottom, a glass cover, an optical adhesive layer, a biosensing layer, a light-transmitting touch layer, a light-emitting display layer, and a flexible substrate. The biosensing layer includes a transparent substrate film disposed on the light-transmitting touch layer, and a conductive wiring network is disposed on the transparent substrate film. A sensing island is disposed on the side of the transparent substrate film facing the optical adhesive layer. The sensing island includes an encapsulation substrate, which is attached to the transparent substrate film. A light emitter group and a light receiver group are disposed on the encapsulation substrate. This application improves the layer structure of the touch display module to embed biosensing functionality inside the touch display module, thereby further reducing the overall thickness of the smart wearable device, thus enabling the smart wearable device to further develop towards thinner and lighter designs.

An edge-lit waveguide illumination system with a thin, flexible layer of optically transmissive material designed for guiding light through optical transmission and total internal reflection. The system features a randomized two-dimensional pattern of discrete cavities formed on its back surface, and an array of linear cylindrical lenses on its front surface. Light is emitted by a plurality of LEDs positioned along a light input edge. A sheet of reflective material is positioned coextensively on the back surface. At least one cavity features a curved wall with a specific angle. Additional components may include a photoresponsive layer, a heat-dissipating metallic substrate with side-emitting LEDs, and optical adhesives or encapsulants. The system may also incorporate luminescent centers and / or a light-diffusing layer for altering light characteristics.

We provide optical adhesive sheets suitable for flexible device applications. [Solution] The adhesive sheet 10 is an optical adhesive sheet and has a shear storage modulus of 80 kPa or less at 25°C. The adhesive sheet 10 is used to determine the shear adhesive strength F1 (N / cm²) in a first shear test in which the first and second glass plates are pulled on opposite sides in a direction perpendicular to the thickness direction H under predetermined conditions after a predetermined heat treatment of the joint in which the first and second glass plates are joined in the thickness direction H via the adhesive sheet 10. 2 The adhesive sheet 10 has a tensile adhesive strength B1 (N / cm²) in a first tensile test in which the third and fourth glass plates are pulled in opposite directions in the thickness direction H under predetermined conditions after heat treatment of the joint in which the third and fourth glass plates are joined in the thickness direction H via the adhesive sheet 10 under predetermined conditions. 2 It has the following properties: The product of the shear adhesive strength F1 and the tensile adhesive strength B1 is 10,000 or more.

An LCoS-based compact single-layer full-color AR optical waveguide, comprising an LCoS optical engine (1), a parallel plate (2), a coupling-in graded-period polarization volume lens (3) and a two-dimensional coupling-out polarization volume grating (4), wherein the LCoS optical engine (1) is connected to the parallel plate (2) by means of optical bonding; the coupling-in graded-period polarization volume lens (3) achieves the effects of light collimation and light defection and coupling, and undergoes graded-period processing to extend the wavelength bandwidth thereof to a visible light range; and the two-dimensional coupling-out polarization volume grating (4) is used for expanding light in two directions, thereby achieving a pupil expansion effect. The full-color AR optical waveguide solves the problem of an LCoS optical engine being excessively large due to the reliance on a projection lens, thereby enabling the implementation of a compact single-layer full-color AR optical waveguide.

Liquid crystal displays (LCDs) and methods of making LCDs are provided where a layered stack of components is secured with at least one piece of tape, such as black mylar tape. The layered stack is bonded to a cover glass and optionally a touch panel / sensor with an optically clear adhesive (OCA). Methods and apparatuses include at least one piece of tape secured to a front side of the layered stack such that the at least one piece of tape folds over the perimeter of the layered stack and is secured to a rear side of the layered stack.

The adhesive sheet (10) is an optical adhesive sheet having a shear storage modulus of 70 kPa or less at-20 DEG C, and a ratio of a first shear loss modulus of the optical adhesive sheet at-30 DEG C to a second shear loss modulus of the optical adhesive sheet at 60 DEG C is 14 or less.

A method of making a readout mirror for a ring laser gyroscope comprises forming an optical substrate component that includes a lower surface, a first upper surface portion substantially parallel to the lower surface, and a second upper surface portion angled with respect to the lower surface; performing a coarse polish of the second upper surface portion; forming an optical part having a first surface; performing a super polish of the first surface of the optical part; applying a first beam splitter layer to the super polished first surface of the optical part, to produce a beam splitter side of the optical part; and bonding the beam splitter side of the optical part, using an optical adhesive, to the coarse polished second upper surface portion of the substrate component, to produce a reflector member. The reflector member is configured to reduce external cavity light scattering in the ring laser gyroscope.

An object of the present invention is to provide a material that has small absorption (low light absorption loss) in the near-infrared region used in optical communication, has excellent heat resistance, and, in addition, can produce a cured article having excellent productivity (UV curability) and also to provide an optical waveguide and an optical adhesive made from the material. Specifically, provided is a curable resin composition containing components (A) to (C) as essential components: (A) a polysiloxane resin having one or more reactive groups selected from the group consisting of a (meth)acryloyl group and a styryl group; (B) a (meth)acrylic acid derivative having a structure represented by General Formula (1); and (C) a radical polymerization initiator.

The present invention provides an active energy ray curable composition that yields a cured product having a high refractive index and sufficient light transmittance and tackiness. [Solution] An active energy ray curable composition comprising inorganic oxide particles (A), a dispersant (B), an acrylic resin (C), and a (meth)acrylate monomer (D), wherein the dispersant (B) is a phosphate ester compound having a number average molecular weight (Mn) of 1500 or less, the acrylic resin (C) has a tolerance value of 160 or more, and the refractive index of the cured product of the active energy ray curable composition is 1.58 or more.

The present invention relates to a method for replicating a hologram into a light-sensitive composite web, comprising the steps of: providing a master element comprising a substrate body and at least one master hologram; optionally providing an input coupling element; providing a tacky composite web comprising a light-sensitive composite web and an optical adhesive film; applying the tacky composite web to a surface of the master element or to a surface of the optional input coupling element; exposing the master element to replicate the at least one master hologram into the light-sensitive composite web, the optical adhesive film establishing optical contact between the light-sensitive composite web and the master element or between the light-sensitive composite web and the input coupling element, wherein the optional input coupling element is used for the exposure; and separating the tacky composite web from the master element or the input coupling element.

This adhesive sheet (10) contains a base polymer, a polyfunctional monomer, and a photopolymerization initiator. The base polymer is a photopolymer containing polymerizable components of a monofunctional monomer and a photopolymerizable polyfunctional compound. The polyfunctional monomer includes a polyfunctional monomer having a cyclic structure.

The adhesive sheet (10) is an optical adhesive sheet having a shear storage modulus at 25 DEG C and a frequency of 1000 Hz of 200 kPa or less, and a loss tangent (tan [delta]) at 25 DEG C of 0.2 or more in a frequency range of 1 Hz to 100 Hz.

The embodiment of the application provides a glass bonding interface rainbow stripe elimination method and device, and relates to the technical field of glass bonding. The glass bonding interface rainbow stripe elimination method comprises the following steps: bonding glass; identifying a first distribution area of a rainbow stripe appearing on a glass bonding interface; calculating a first rainbow stripe area of the first distribution area; applying a first preset pressure to the first distribution area according to the first rainbow stripe area and maintaining the first preset pressure for a first preset time length; detecting whether the rainbow stripe disappears; and if the rainbow stripe disappears, canceling the pressure applied to the glass. The glass bonding interface rainbow stripe elimination method can effectively eliminate the rainbow stripe generated on the bonding interface of two pieces of glass, so as to meet the glass optical bonding requirement required by laser fusion, thereby improving the optical performance and quality of products.

An optical engine device includes an integrated circuit chip having a top surface orthogonal to a vertical direction, a light-emitting device on the top surface of the integrated circuit chip and coupled with the integrated circuit chip, a first optical adhesive layer including a protrusion and configured to seal the light-emitting device, and an optical fiber plate including a cavity facing the first optical adhesive layer. The protrusion of the first optical adhesive layer is coupled with the optical fiber plate within the cavity.

The invention discloses a low-modulus hot-melt optical adhesive film for a touch screen and a preparation method of the low-modulus hot-melt optical adhesive film, and belongs to the technical field of touch screen fitting and packaging. The hot-melt optical adhesive film is prepared from the following raw materials in parts by weight: 100 parts of macromolecular resin, 1 to 15 parts of acrylate monomer, 5 to 50 parts of functional resin, 0.2 to 5 parts of photoinitiator, 0.05 to 1.5 parts of light stabilizer, 0.05 to 1.5 parts of antioxidant and 0.1 to 3 parts of coupling agent, the functional resin is a 1-octylene oligomer. The hot-melt optical adhesive film has excellent electrical insulating property, water vapor barrier property and bonding strength, has lower elastic modulus, and can be applied to optical lamination of a liquid crystal display screen and a flexible touch screen.

A display substrate includes a base substrate, a light-emitting structure layer located on the base substrate, an encapsulation structure layer located on the light-emitting structure layer, a reflection layer located on the encapsulation structure layer, a hydrophilic material layer located on the reflection layer, and an optical adhesive layer located on the hydrophilic material layer.

Provided is a photocurable adhesive composition comprising at least one photo initiator, at least one (meth) acrylate monomer, at least one poly (meth) acrylate oligomer with reactive unsaturated bond, wherein the poly (meth) acrylate oligomer having a weight-average molecular weight of greater than 300,000 Da. The photocurable adhesive composition could be used as optical bonding adhesive, for example, in display panel assembly, which provides very good bonding strength, good optical performance, longer aging resistance, good surface curing, high refractive index and good processability.

A LED structure includes a first color light-emitting unit, a second color light-emitting unit, a third color light-emitting unit and an optical bonding layer. The first color light-emitting unit and the second color light-emitting unit are located in the same layer and on a light emission side of the third color light-emitting unit. The optical bonding layer is located between the first color light-emitting unit and the third color light-emitting unit and between the second color light-emitting unit and the third color light-emitting unit and is configured to bond the first color light-emitting unit to the third color light-emitting unit and bond the second color light-emitting unit to the third color light-emitting unit. The optical bonding layer is configured to transmit light from the third color light-emitting unit and reflect light from the first color light-emitting unit and the second color light-emitting unit to the light emission side.

The adhesive sheet (10) is an optical adhesive sheet having a thickness of 45 [mu] m or more and a moisture permeability of 400 g / m2 * 24 h or less as measured under conditions of 40 DEG C and a relative humidity of 92%. The adhesive sheet (10) has a shear storage modulus G1 of 70 kPa or less at-20 DEG C. The adhesive sheet (10) has a shear storage modulus G2 at-30 DEG C, and the ratio of the shear storage modulus G2 to the shear storage modulus G1 is 2.0 or less.

The application relates to the technical field of vehicle-mounted display, in particular to a vehicle-mounted display screen module and a preparation method thereof. The vehicle-mounted display screen module comprises, from bottom to top, a display panel assembly, an optical bonding layer and a cover plate assembly which are sequentially stacked. The optical bonding layer comprises a first optical adhesive layer and a second optical adhesive layer which are stacked, and the refractive index of the first optical adhesive layer is greater than that of the second optical adhesive layer. The display panel assembly comprises a TFT array substrate, a CF substrate group and a liquid crystal layer. A black matrix plating layer is arranged on the metal wiring of the TFT array substrate and used for absorbing visible light which is incident from the side of the cover plate assembly and irradiated to the TFT array substrate after passing through the CF substrate group and the liquid crystal layer. The vehicle-mounted display screen module can completely eliminate interface reflection as much as possible by adding the black matrix plating layer and selecting the double-layer optical adhesive layer, thereby effectively reducing the total reflectivity of the vehicle-mounted display screen module, and significantly improving the visual experience and driving safety.

A method is provided for fabricating lightguide components (32) with internal partially-reflecting surfaces ("facets") for use in near-eye displays. A stack (10) is formed by bonding a plurality of optical plates (12) using optical adhesive, with at least one surface at each adhesive interface carrying a partially reflective coating. The inter-plate spacing is controlled using spacer components, which may include transparent, index- matched solid inclusions (20) dispersed within the adhesive, or peripheral spacer elements (22, 24) positioned at the plate margins. The adhesive is cured to form a bonded stack, which is sliced along planes non-parallel to the plates to form lightguide components (32) containing internal facets at controlled orientations. These components may be combined into an assembled lightguide structure (34) including a coupling-in region (38), a redirection region (32) for in-plane propagation (36), and a coupling-out region (33) directing light toward a viewer (40), enabling two-dimensional aperture expansion.

The adhesive sheet (10) is an optical adhesive sheet in which the elongation L1 (%) and the strain stress S1 (N / cm < 2 >) at the breaking point and the strain stress S2 (N / cm < 2 >) at the elongation L2 (%) that is half the elongation L1 satisfy (S1-S2) / (L1-L2) < = 0.028 in a tensile test under the conditions of 25 DEG C and a pulling speed of 300 mm / min.

The problem to be solved is to provide a curable optical adhesive composition in which the cured product has high hardness with excellent temperature stability and excellent elongation, and can accurately maintain the position of in-vehicle optical components under the temperature and motion conditions in which automobiles are operated. The solution of the problem is a curable optical adhesive composition comprising a curable optical resin composition comprising a (meth)acryloyloxy group-containing (meth)acrylic polymer (A), a high glass transition temperature vinyl-based monomer (B), a hard filler (C) and a polymerization initiator (D), wherein a cured product of the curable optical resin composition is an optical resin having a glass transition temperature of 125°C or higher and an elongation rate at room temperature of 3% or more.

To provide a curable optical adhesive composition in which the cured product exhibits excellent hardness and elongation with superior temperature stability, enabling the precise maintenance of the position of in-vehicle optical components under the operating temperature and motion conditions of an automobile. [Solution] A curable optical adhesive composition comprising a curable optical resin composition containing a (meth)acryloyloxy group-containing (meth)acrylic polymer (A), a high glass transition temperature vinyl monomer (B), a rigid filler (C), and a polymerization initiator (D), wherein the cured product of the curable optical resin composition is an optical resin having a glass transition temperature of 125°C or higher and an elongation of 3% or higher at room temperature.

An optical ferrule assembly (100), the optical ferrule assembly comprising an optical ferrule (100), the optical ferrule comprising an attachment region (130), a light input surface (142), and a light output surface (141); an optical fiber (132) having an optical fiber end (133) wherein the light input surface and the optical fiber end define therebetween a gap (g) substantially filled therein with an adhesive (150) comprising nanoparticles (155) such that propagating along the optical fiber and having a lt; light (170) having a peak intensity I1 of = 1.5 GW / m2 exits the end of the optical fiber and enters the optical ferrule through the light input surface and exits the optical ferrule through the light output surface after passing through the gap through the adhesive. The emergent light has a first beam size (W1) such that any change in the first beam size due to photodegradation of the adhesive after aging of the optical ferrule assembly for at least 100 hours does not exceed about 10%.