152 results about "Electroluminescent display" patented technology

An electroluminescent display device according to an example embodiment of the present disclosure may include a substrate having an active area and a non-active area, an oxide thin film transistor disposed on the substrate, an inorganic layer disposed on the oxide thin film transistor, an organic layer disposed on the inorganic layer, at least one hole disposed in the organic layer of the non-active area, a hydrogen blocking layer disposed on the organic layer and an inner surface of the hole and a light emitting element disposed on the organic layer and including an anode, a light emitting unit, and a cathode. As a result, characteristics and reliability of the thin film transistor can be improved by preventing hydrogen from flowing into the oxide thin film transistor.

An electroluminescent display device includes a substrate having a display area surrounding a through-hole, and a non-display area disposed between the display area and the through-hole, a thin-film transistor disposed on an upper portion of the display area and a light-emitting element connected to the thin-film transistor, a plurality of insulating layers disposed between the substrate and the thin-film transistor, a planarization layer disposed between the thin-film transistor and the light-emitting element, and at least one anti-connection part disposed in the non-display area and including the plurality of insulating layers and the planarization layer, in which the planarization layer and the plurality of insulating layers, which constitute the anti-connection part, and each of the planarization layer and the plurality of insulating layers has an undercut shape in which a bottom surface is narrower than a top surface, so that the light-emitting part of the light-emitting element is disconnected in the through-hole by the anti-connection part, thereby penetration of moisture through the light-emitting part may be inhibited.

Disclosed is an electroluminescent display device using a variable refresh rate (VRR) mode. The purpose of the present disclosure is to reduce the occurrence of a difference in luminance at a time point of a refresh rate change, thereby preventing viewers from perceiving the variation of the refresh rate.

An electroluminescence display having a repair structure comprises: a pixel comprising a thin film transistor and a light emitting diode, the thin film transistor including a semiconductor layer, a gate electrode, a source electrode, and a drain electrode, and the light emitting diode including an anode electrode that is connected to the thin film transistor; a repair element having a welding part that is configured to be connected to the thin film transistor; a planarization layer on the repair element and including a depression that overlaps the welding part of the repair element; and an organic material in the depression, wherein the anode electrode includes a first anode electrode layer and a second anode electrode layer, the first anode electrode layer including a portion that is disposed in the depression, and the second anode electrode layer being on the first anode electrode layer and the organic material.

The utility model relates to the field of organic light-emitting diodes, in particular to an anti-peeping organic light-emitting display device, a preparation method thereof and electronic equipment with an OLED display screen. The organic electroluminescence display device comprises a back plate, an electroluminescence pixel layer, a thin film packaging layer, an R cholesteric phase film layer, a G cholesteric phase film layer, a B cholesteric phase film layer, a polaroid and a covering film layer which are stacked in sequence. A red light pixel region, a green light pixel region and a blue light pixel region which are positioned at intervals by PDL are respectively arranged in the electroluminescent pixel layer; each cholesteric membrane layer is composed of a cholesteric region and a transparent region; according to the design scheme of the patterned R, G and B-CLC laminated brightness enhancement film and the design of the side-by-side and uniform pitch structure of the R, G and B-CLC Planar State region, an OLED device with low power consumption and peep-proof characteristics can be constructed.

The invention relates to the technical field of organic electroluminescence display, in particular to an efficient OLED display device and a preparation method thereof. According to the preparation method of the efficient OLED display device, the carrier mobility of the prepared OLED display device is improved by 12.4 times compared with that of a traditional device through fluorine hydroxylation modification of polyimide, bifunctional liquid crystal molecules and a synergistic process, the highest current efficiency is 92 cd / A, the service life reaches 13200 h, and the modified polyimide is good in solubility, is suitable for solution processing, and can be applied to the field of organic light emitting diode display devices, such as organic light emitting diode display devices, organic light emitting diode display devices, organic light emitting diode display devices, organic light emitting diode display devices, organic light emitting diode display devices and organic light emitting diode display devices. Equipment transformation is not needed, and the industrialization value is high.

An electroluminescent display device includes a substrate having an emission region and a bezel region, a bank layer that extends from the emission region to the bezel region, a plurality of signal lines which are disposed on different layers on the substrate, a first metal layer that overlaps the plurality of signal lines and has a step, a second metal layer that is disposed on the first metal layer, and an intermediate layer between the first and second metal layer. A step or curvature above the first electrode may be offset by the first intermediate layer so that incident from the outside is inwardly reflected. Therefore, a failure that a user at the outside recognizes the reflected light may be solved.

An organic electroluminescence display device includes a substrate including a first surface, a first area arranged on the first surface and including one or more first spacers and a plurality of pixels each including a light-emitting layer, a third area arranged on the first surface, surrounding the first area, and not including spacers, and a second area arranged on the first surface, surrounding the third area, and including one or more second spacers. The plurality of pixels each including the light-emitting layer is arranged along a first direction and a second direction intersecting the first direction, and a length of the third area in the second direction is a total length of pitches for at least two pixels.

Provided is a composition with which an optically anisotropic film exhibits reverse wavelength dispersibility and shows nx>nz>ny can be formed, an optically anisotropic film, an optical film, a circularly polarizing plate, and an organic EL display device. The composition includes a compound represented by Formula (1); and a rod-like compound, in which the compound represented by Formula (1) has a maximal absorption wavelength in a wavelength range of 300 nm or less, and the rod-like compound has a maximal absorption wavelength in a wavelength range of 330 nm or more.

The present invention relates to an electroluminescent display device comprising an array of electroluminescent pixels consisting of a plurality of pixels deposited on a substrate (210), each pixel being formed by at least three elementary light-emitting regions, each elementary light-emitting region belonging to a different elementary light-emitting region group, each elementary light-emitting region comprising an electroluminescent stack (205) of organic layers, referred to as an "OLED stack", and a transparent upper electrode (207) placed between the control electrode (202) and the transparent upper electrode (207), the electroluminescent display device being characterized in that: two adjacent control electrodes (202a, 202b; 202b, 202c, 202c; 202c, 202a) are separated by a space (211) forming a trench, which covers at least the vertical sides of adjacent electrodes and electrically insulates them from each other, and two adjacent control electrodes (202a, 202a; the electrodes (202a, 202b, 2024, 202c) are separated by a space (211) forming the trench, which space is filled by a filling element (203) such that adjacent electrodes are electrically insulated from each other and fill the natural space between the two electrodes. In each group of basic light emitting regions, the entire OLED stack and its respective upper electrodes (205a and 207a, 205b and 207b, 205c and 207c) are separated from adjacent components belonging to the other group by an encapsulation layer (290) that protects the upper surface and sides of the OLED stack from ambient air.

The utility model discloses a patterned optical film which comprises a patterned alignment layer, a liquid crystal filling layer and a polarizing layer. The patterned alignment layer is provided with a first surface and a second surface which are opposite to each other, the first surface is provided with a plurality of strip-shaped flat areas extending in the direction parallel to the film surface and a plurality of strip-shaped reflection slope areas extending in the direction parallel to the film surface, and each strip-shaped reflection slope area is arranged between the adjacent strip-shaped flat areas. The liquid crystal filling and leveling layer is formed on the first surface of the patterned alignment layer, covers the plurality of strip-shaped flat areas of the patterned alignment layer and fills and levels the plurality of strip-shaped reflection slope areas. The polarizing layer is arranged on the side, away from the pattern alignment layer, of the liquid crystal filling layer. When the patterned optical film provided by the utility model is used on the surface of a self-luminous electroluminescent display, the image contrast can be improved and the patterned optical film has metal reflection gloss when image light is displayed in a bright state.

The application discloses an equivalent sub-threshold swing regulation method of a single-gate transistor and a pixel circuit. The method comprises the following steps: obtaining a coupling control voltage based on a preset linear function relationship and a data voltage; coupling the coupling control voltage and the data voltage to obtain a coupling result; and providing the coupling result to a gate node of the single-gate transistor. The preset linear function relationship comprises a gain coefficient, and the gain coefficient is configured to program and regulate the equivalent sub-threshold swing of the single-gate transistor. Through the design of the preset linear function relationship between the data voltage and the coupling control voltage and the synergistic effect of circuit compensation, the high-precision uniformity control of the current under the low gray scale condition and the improvement of the high-resolution electroluminescent display quality are realized.

An electroluminescent display apparatus may include a first semiconductor pattern including a first channel region and a first conductive region which is a region other than the first channel region, a first gate electrode overlapping the first channel region of the first semiconductor pattern with a first gate insulation layer therebetween, a first interlayer insulation layer covering the first semiconductor pattern, and the first gate electrode, a second semiconductor pattern disposed on the first interlayer insulation layer, the second semiconductor pattern including a second channel region and a second conductive region which is a region other than the second channel region, and a second gate electrode overlapping the second channel region of the second semiconductor pattern with a second gate insulation layer therebetween. The first conductive region of the first semiconductor pattern partially overlaps the second conductive region of the second semiconductor pattern with the first interlayer insulation layer therebetween.

An electroluminescent display device includes a substrate on which a plurality of sub-pixels are defined; a first electrode in each sub-pixel on the substrate; a first hole transporting layer on the first electrode; a second hole transporting layer on the first hole transporting layer; a third hole transporting layer on the second hole transporting layer; a light-emitting material layer on the third hole transporting layer; an electron transporting layer on the light-emitting material layer; and a second electrode on the electron transporting layer, wherein the first hole transporting layer includes a P-type dopant and a first hole transporting material, the second hole transporting layer includes the first hole transporting material, and the third hole transporting layer includes a second hole transporting material, and wherein a total thickness of the first and second hole transporting layers is equal to or greater than a thickness of the third hole transporting layer.

The present disclosure provides a display apparatus. According to the present disclosure, a complex refractive layer is disposed on a side of the polarizer facing away from the electroluminescent display panel, and configured to convert the linearly polarized light into the circularly polarized light, so that the linearly polarized light in different polarization states having passed through the glass enters the complex refractive layer before entering the polarizer, the complex refractive layer converts the linearly polarized light into the circularly polarized light, and when the included angle between the film-forming stretching direction of the complex refractive layer and the first direction is an acute angle, almost all of the circularly polarized light can pass through the polarizer, thus eliminating the Mura phenomenon.

An electroluminescent display device includes a substrate including an emission region and a non-emission region surrounding the emission region, a planarization layer formed over the substrate, a light emitting device disposed over the planarization layer, overlapping the emission region and including an anode electrode, and a separation layer disposed spaced apart from the anode electrode over the planarization layer and disposed in at least a portion of the non-emission region between one emission region and another emission region adjacent to the one emission region in parallel with a first direction or a second direction, wherein the planarization layer is formed to overlap at least a portion of the non-emission region and includes a trench portion formed by removing at least a portion of the planarization layer, the trench portion at least partially overlaps an end portion of each of the anode electrode and the separation layer in the non-emission region, the light emitting device further includes a light emitting layer and a cathode electrode formed in sequence over the anode electrode, and the light emitting layer and the cathode electrode are discontinuously formed in the trench portion.

An electroluminescent display device can include a substrate divided into a plurality of sub-pixels having an opening area and a non-opening area, a planarization layer disposed on the substrate, an anode disposed on the planarization layer, and a bank disposed on the anode and the planarization layer, the bank having an opening exposing a portion of the anode in the opening area. The electroluminescent display device has a light emitting unit disposed on the portion of the anode; a cathode disposed on the light emitting unit and the bank. A deposition blocking layer is disposed on the cathode in a portion of the non-opening area and the opening area, and a reflective layer disposed on the cathode in another portion of the non-opening area, in which the reflective layer does not overlap with the deposition blocking layer.

The present application relates to phenolic resin and its application in the field of liquid crystal and organic electroluminescent display technology, specifically relates to a kind of fluorine-containing phenolic resin and its preparation method and the photoresist composition using it.The present application provides a kind of fluorine-containing phenolic resin, the molecular weight of the fluorine-containing phenolic resin is 3000-15000, the fluorine-containing phenolic resin has the structure as shown in structural formula (A), and at least one fluorine substituent group is carried in any position on non-hydroxyl group in formula (A).The fluorine-containing phenolic resin of the present application has high alkali dissolution rate, the existence of C-F bond improves the rigidity of molecular chain while having certain hydrophobicity, so that the photoresist comprising the present fluorine-containing phenolic resin is enhanced in non-exposed area dissolution inhibition, beneficial to improve residual film rate and image resolution.

An organic electroluminescent display device includes a circular polarization plate and an organic electroluminescent display element. The circular polarization plate includes an optically anisotropic layer and a polarizer from an organic electroluminescent display element side. When a ratio of brightness of P-polarized to S-polarized light during white display in a direction in which a polar angle with respect to a normal direction of the display is 60° is determined at each azimuthal angle rotated by 45° with reference to a direction parallel to a transmission axis of the polarizer, an arithmetic mean value of the ratios of the brightness of the P-polarized to the S-polarized light at the azimuthal angles is defined as x and a ratio of in-plane retardation at wavelengths of 600 nm to 440 nm in the optically anisotropic layer is defined as y, x and y satisfy a predetermined relationship.

An organic EL display device has a picture-frame region provided with: dam walls extending along an outer periphery of a display region to block an organic sealing layer; and a second lead wire running from toward the display region, crossing the dam walls, and extending out of the picture-frame region. The picture-frame region includes a spacer wall extending along the dam wall and provided to an outer periphery of a portion, of the dam wall, intersecting at least with the second lead wire. The spacer wall has an upper portion provided with a plurality of protruding portions at intervals along the spacer wall. The second lead wire extends to cross a portion of, the spacer wall, away from the protruding portions.

An electroluminescence display can include a pixel on a substrate, and a light emitting element in the pixel. The light emitting element can include a first electrode, an emission layer on the first electrode, and a second electrode on the emission layer. The electroluminescence display can further include a light shield layer under the emission layer with a planarization layer there-between, where the light shield layer overlaps a first portion of the emission layer. A first distance is formed between the first electrode and the second electrode at the first portion of the emission layer. A second distance is formed between the first electrode and the second electrode at a second portion of the emission layer different from the first portion, and the first distance is smaller than the second distance.

An electroluminescent display device comprising: a substrate (100) which includes an active area (AA) where a plurality of pixels (P) is provided, wherein the plurality of pixels (P) includes a red pixel, a green pixel and a blue pixel; a circuit element layer (200) arranged on the substrate (100); a first electrode (310) arranged on the circuit element layer (200) in each of the red pixel, the green pixel and the blue pixel; an auxiliary electrode (320) which is arranged on the circuit element layer (200) and is spaced apart from the first electrode (310); a first light-emitting layer (510) arranged in each of the red pixel, the green pixel and the blue pixel on the first electrode (310), wherein the first light-emitting layer (510) comprises a hole injection layer (HIL), a hole transport layer (HTL) and a light-emitting material layer (EML) and wherein the light-emitting material layer (EML) in the blue pixel is a blue light-emitting material layer (EML(B)); a buffer layer (520) arranged on the first light-emitting layer (510) in the blue pixel, wherein the buffer layer (520) is an electron transport layer (ETL), wherein the buffer layer (520) is formed using an inkjet process, wherein the buffer layer (520) is arranged on the blue light-emitting material layer (EML(B)) and wherein the buffer layer (520) is not arranged on the auxiliary electrode (320); a second light-emitting layer (530), wherein the second light-emitting layer (530) is an electron injection layer (EIL); and a second electrode (600) which is arranged on the second light-emitting layer (530), wherein the second light-emitting layer (530) is arranged in the red pixel and the green pixel on the first light-emitting layer (510), in the blue pixel is arranged on the buffer layer (520) and is arranged on the auxiliary electrode (320).

Electroluminescent display device comprising the following: a substrate (SUB) comprising a display area (AA) and a non-display area (IA) located near the display area (AA); a light-emitting diode (ED) in the display area (AA), wherein the light-emitting diode (ED) comprises a phosphor layer (EL); an encapsulation layer (130) on the light-emitting diode (ED), wherein the encapsulation layer (130) comprises a first inorganic encapsulation layer (PAS1), a second inorganic encapsulation layer (PAS2) and an organic encapsulation layer (PCL) arranged between the first inorganic encapsulation layer (PAS1) and the second inorganic encapsulation layer (PAS2); an upper passivation film (PAS) that is arranged on top of the second inorganic encapsulation layer (PAS2); a through-hole (TH) located within the display area (AA) to penetrate the substrate (SUB); an inner dam (DMI) surrounding the through hole (TH); a trench (TR) arranged between the inner dam (DMI) and the through hole (TH); a buffer film (BUF) on which a thin-film transistor (T) is arranged; wherein the buffer film (BUF) is arranged on an upper surface of the substrate (SUB) and extends below the inner dam (DMI) and trench (TR); a thin film layer comprising the first inorganic encapsulation layer (PAS1) and the second inorganic encapsulation layer (PAS2) and completely covering the inner dam (DMI) and trench (TR) in the display area (AA); wherein the trench (TR) has a recessed section which is recessed in such a way that it reaches an upper surface of the buffer film (BUF) between the through hole (TH) and the inner dam (DMI); and the luminescent layer (EL) is interrupted at the trench (TR).

The invention relates to the technical field of data processing, in particular to an electroluminescent display illuminant packaging structure optimization system which comprises an in-situ quantum sensing module, a cross-scale topological evolution module, an adversarial optimization decision module and a self-verification laser execution module. The in-situ quantum sensing module obtains packaging interface atom displacement data through the quantum dot sensor array and corrects environmental errors; the cross-scale topological evolution module fuses molecular dynamics and a phase field model to generate a stress topological cloud picture to identify a strain mismatch area; the adversarial optimization decision module restrains gradient distribution by a physical loss function, verifies a microcrack probability threshold, and outputs a fractal configuration and nano lamination scheme; and the self-verification laser execution module synchronizes photon detection and femtosecond laser correction energy distribution to reconstruct a bonding interface. All the modules form a closed-loop data flow, and the technical problem that thermal expansion mismatch in flexible display induces interface microcracks to form a moisture permeation channel is solved.

The present invention relates to an optical device (100) for a display device comprising: i) a substrate (110); ii) one or more of gratings (120) placed onto the substrate; and iii) one or more of recessed grooves (130) at least partly filled by a material (140). The optical device may be made by using an advanced material or by using a high-performance material. The optical device may be used to make display device application, for example, a Liquid crystal display (LCD), Light emitting diode display (LED display), organic light emitting display (OLED), micro-LED display, quantum dot display (QLED), Augmented Reality (AR) hardware, Virtual Reality (VR) hardware, Mixed Reality (MR) hardware, plasma (PDP) display and an electroluminescent (ELD) display.

Disclosed is a curable composition for use in sealing of an organic electroluminescent element part. The curable composition contains one or more compounds A that are represented by general formula (1) and have a point group of Cs or C2v, and a (meth)acrylic acid ester compound that has a molecular weight of 500 or less. At least one of the compounds A is a compound in which at least one of Ra to Rh is a (meth)acryloyl thioxy group. Also disclosed are: a cured product which is obtained from this composition; an OLED display element; and a method for sealing an OLED element part. In the formula, Ra to Rh each represent a hydrogen atom, an alkylsulfanyl group having 1 to 10 carbon atoms, or a (meth)acryloyl thioxy group.

The present application provides a kind of laminated body and organic electroluminescence display device, the laminated body includes wavelength selective absorption layer and the gas barrier layer directly configured on at least one side of the wavelength selective absorption layer, the wavelength selective absorption layer contains resin, dye comprising at least one of four specific dyes A-D, and the anti-fading agent of dye;Above-mentioned gas barrier layer contains crystalline resin, the thickness of layer is 0.1 μm-10 μm, and the oxygen permeability of layer is 60 cc / m 2 ·day·atm below.

There are provided a light absorption filter including a wavelength selective absorption layer containing a resin A having an acid group, and a dye, and an adjacent layer directly disposed on at least one surface of the wavelength selective absorption layer, in which the adjacent layer contains a resin having a basic group, an optical filter using the light absorption filter, a manufacturing method for the optical filter, and an OLED display device, an inorganic EL display device, and a liquid crystal display device, each of which includes the optical filter.

An electroluminescent display device according to an example embodiment of the present disclosure may include a substrate including an active area having an emission area and a non-active area, a planarization layer disposed on the substrate, a light emitting element disposed on the planarization layer, a buffer layer disposed on the light emitting element and having a plurality of holes in a surface thereof and a hydrogen trap layer disposed on the buffer layer. As a result, by preventing hydrogen inflow into an oxide thin film transistor, characteristics and reliability of the thin film transistor can be improved.