474 results about "OLED" patented technology

Sub-pixel circuits and methods of forming sub-pixel circuits that may be utilized in an organic light-emitting diode (OLED) display are described herein. The adjacent metal-containing overhang structures defining each sub-pixel of the sub-pixel circuit of the display provide for formation of the sub-pixel circuit using evaporation deposition and provide for the metal-containing overhang structures to remain in place after the sub-pixel circuit is formed (e.g., utilizing the methods of the fifth, sixth, or seventh exemplary embodiments). Evaporation deposition may be utilized for deposition of an OLED material and cathode. The metal-containing overhang structures define deposition angles, i.e., provide for a shadowing effect during evaporation deposition. The encapsulation layer of a respective sub-pixel is disposed over the cathode with the encapsulation layer extending under at least a portion of each of the adjacent metal-containing overhang structures and along a sidewall of each of the adjacent metal-containing overhang structures.

The present disclosure provides for an organic electroluminescent device (OLED) including an anode; a cathode; and an emissive layer, disposed between the anode and the cathode. The emissive layer includes a phosphorescent dopant, a first host, and a second host, wherein the first host transports holes, the second host transports electrons, and the first host is fully or partially deuterated. Consumer products that include the OLED are also provided.

The invention relates to the technical field of acrylate adhesives, in particular to a strong acid corrosion resistant high-viscosity UV visbreaking protective film and a preparation method thereof. The protective film provided by the invention is prepared from the following raw materials in parts by mass: 50 to 75 parts of high-Tg acrylic UV resin, 25 to 50 parts of low-Tg acrylic UV resin, 1 to 3 parts of photoinitiator, 10 to 20 parts of trifunctional UV active monomer PETA, 50 to 100 parts of solvent and 1 to 3 parts of cross-linking agent. The acid-resistant time of the prepared protective film in a 20wt% HF solution at the temperature of 50 DEG C exceeds 4 h, the adhesive force before UV reaches 1600-1900g / 25mm, the adhesive force after UV is reduced to 0-15g / 25mm, no adhesive residue exists, reliable protection and lossless stripping in a precise element strong acid process can be achieved, the requirements of high-end manufacturing industries such as semiconductors and OLEDs can be met, and meanwhile the protective film has the advantages of being stable in process, environmentally friendly and compliant.

Voltage regulating devices for organic light emitting diodes (OLED) are provided. The voltage regulating device includes an operational amplifier and a voltage output circuit. The operational amplifier generates an output voltage. The voltage output circuit is coupled to the operational amplifier. The voltage output circuit is controlled by a selection signal to generate a control voltage selectively using a first operating voltage interval or a second operating voltage interval. A voltage value of the control voltage is related to a reference voltage of the OLED, and the selection signal is correspondingly generated according to the reference voltage of the OLED.

Provided is a compound including a metal complex having a metal M with a coordination number of four with four coordinating atoms, Z1, Z2, Z3, and Z4, coordinated to the metal M. In the compound, each of Z1, Z2, Z3, and Z4 is independently selected from O, S, Se, N, P, C, Si, or B; at least one of Z1, Z2, Z3, or Z4 is S* or Se*, where S* and Se* represent S or Se, respectively, that form a dative bond with M; and the metal M is selected from Pt, Pd, Cu, Ag, Au, or Zn, Formulations, OLEDs, and consumer products containing the compound are also provided.

The present disclosure relates to a display apparatus, and the display apparatus includes a display panel on which a plurality of sub-pixels are disposed, the plurality of sub-pixels each including an organic light-emitting diode, a base voltage node connected to a cathode electrode of the organic light-emitting diode, a plurality of driving voltage lines disposed on the display panel and configured to supply a driving voltage of the organic light-emitting diode to the plurality of sub-pixels, a controller configured to control a gate driving circuit and a data driving circuit, and a defect detection circuit configured to determine whether a defect occurs in the driving voltage line based on a voltage sensed at the base voltage node, wherein, based on a defect signal output from the defect detection circuit, an output of at least one of the controller, the gate driving circuit, and the data driving circuit is controlled.

Embodiments described herein relate to a device comprising a substrate, a plurality of protruding structures, and a plurality of subpixels. The plurality of protruding structures include a first structure, a second structure disposed on the upper surface of the first structure, an adjacent first protrusion, a third structure disposed on the second structure, and an adjacent second protrusion. Each first protrusion is defined by a first protrusion extension of the second structure that extends laterally past the upper surface of the first structure. Each subpixel includes an anode, an organic light-emitting diode (OLED) material disposed on the anode, and a cathode disposed on the OLED material.

The present invention relates to novel materials and electronic devices, in particular organic electronic devices such as OLEDs (organic light emitting diodes) containing these materials, for example as hole injection materials, hole transport materials or electron blocking materials. The invention also relates to mixtures that contain these novel materials.

The application relates to the technical field of distributed data processing, in particular to a data collection and storage method and system, an organic light-emitting diode inkjet printing equipment and a storage medium. The method comprises the following steps: a collection client obtains a collection task of the organic light-emitting diode inkjet printing equipment; based on a preset data type classification rule, the collection task is split into multiple independent subtasks, wherein the number of the independent subtasks is adapted to the number of the collection clients; each collection client collects original data of the organic light-emitting diode inkjet printing equipment in parallel according to each independent subtask, and sends the original data to a master node of a distributed cache cluster; each master node receives original data of a corresponding type, divides a storage partition according to a type corresponding to the preset data type classification rule, and directly writes the original data into a local memory to complete real-time storage, so that the data storage delay of the organic light-emitting diode inkjet printing equipment multi-type data collection is low.

A pixel driving circuit and a driving method thereof, a display panel and a display device, the pixel driving circuit being used for driving a light emitting unit (OLED), the pixel driving circuit comprising: a driving circuit (1), a compensation circuit (2), a control circuit (3), and a data writing circuit (4), the driving circuit (1) being connected with a first node (N1), a second node (N2), and a third node (N3), and being used for inputting a driving current to the third node (N3) through the second node (N2) according to a voltage signal of the first node (N1); the compensation circuit (2) being connected with the first node (N1), the third node (N3), and a gate driving signal end (Gate), and being used for connecting the first node (N1) and the third node (N3) in response to a signal of the gate driving signal end (Gate); the control circuit (3) being connected with the second node (N2), a first power supply end (VDD), the third node (N3), a first electrode of the light emitting unit (OLED), and a first enable signal end (EM1), and being used for connecting the first power supply end (VDD) and the second node (N2) in response to a signal of the first enable signal end (EM1), and being used for connecting the third node (N3) and the first electrode of the light emitting unit (OLED) in response to the signal of the first enable signal end (EM1); and the data writing circuit (4) being connected with the second node (N2), a data signal end (Da), and a second enable signal end (EM2), and being used for transmitting a signal of the data signal end (Da) to the second node (N2) in response to a signal of the second enable signal end (EM2). In at least part of a period in which the gate driving signal end (Gate) outputs an invalid level, the first enable signal end (EM1) alternately outputs a valid level and an invalid level, the second enable signal end (EM2) alternately outputs the valid level and the invalid level, and a valid level period of the second enable signal end (EM2) is located in an invalid level period of the first enable signal end (EM1), and a valid level period of the first enable signal end (EM1) is located in an invalid level period of the second enable signal end (EM2).

The present disclosure provides a multilingual keyboard comprising a first set of keys with Organic Light-Emitting Diode (OLED) displays and matte-finished key caps, produced through a blending process for clear visibility and aesthetic appeal. The multilingual keyboard includes at least two sets of keys: the first set with OLED displays for dynamic character updates based on the selected language, and a second set with fixed functions for a familiar typing experience. The multilingual keyboard incorporates a language switching system that enables seamless transitions between multiple languages with real-time updates on the OLED displays of the first set of keys. Designed to replace multiple keyboards and complex software mappings, the multilingual keyboard offers a versatile typing solution.

The invention relates to a metal mask supported by a glass substrate for manufacturing an organic light emitting diode display. The mask includes a glass substrate located only outside the display area, an open-cell metal layer for providing structural stability, and forming apertures for material deposition in the display area. The perforated metal layer can be formed by methods such as electroforming, sputtering, chemical vapor deposition, evaporation or atomic layer deposition, and the used metal comprises a material with a low thermal expansion coefficient, such as invar steel, super invar steel, kovar alloy, 42 alloy, nickel, tungsten, molybdenum, tantalum or rhenium. The mask supports two structural forms: a fine metal mask and an open metal mask which are respectively used for evaporation of red, green and blue sub-pixels and a common layer. The method can be used for batch processing of a plurality of micro organic light-emitting diode display substrates, and can also be used for full-coverage processing of a single active matrix organic light-emitting diode display substrate.

Provided are organometallic compounds of of Formula I:Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

The invention provides a carbazole compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. The carbazole compound provided by the invention has excellent triplet state energy level characteristics, efficient carrier transport capability, good film-forming stability and structural durability when being applied to a light-emitting layer in a device. The luminous efficiency of the device can be greatly improved, the driving voltage is effectively reduced, and the service life of the device is prolonged. The organic electroluminescence display panel is suitable for a traditional organic electroluminescence display panel, can also be widely applied to the fields of organic light-emitting diode illumination, flexible display modules and the like, and has remarkable technical practicability and wide industrialization prospects.

A display device may include a display panel including a plurality of subpixels, a mode control circuit configured to control a driving mode by determining a state of a user, a compensation control circuit configured to control compensation for at least one of a driving voltage and a data signal according to the user's state, a data driving circuit configured to supply a compensated data signal to the display panel according to control of the compensation control circuit, and a power management circuit configured to supply a compensated driving voltage to the display panel according to control of the compensation control circuit.

An organic light emitting diode display includes a substrate, a scan line on the substrate for transferring a scan signal, a data line crossing the scan line and for transferring a data signal, a driving voltage line crossing the scan line and for transferring a driving voltage, a switching thin film transistor coupled to the scan line and the data line, a driving thin film transistor coupled to a switching drain electrode of the switching thin film transistor, and an organic light emitting diode (OLED) coupled to a driving drain electrode of the driving thin film transistor, wherein a driving semiconductor layer of the driving thin film transistor is bent and in a plane substantially parallel to the substrate.

An organic light emitting diode display device includes a substrate having a plurality of subpixels. The device includes an overcoat layer on the substrate. The device includes a light emitting diode in each of the plurality of on the overcoat layer. In some embodiments, a top surface of the overcoat layer in adjacent two of the plurality of subpixels includes a plurality of microlenses having different rotation angles. The top surface of the overcoat layer between the adjacent two of the plurality of subpixels includes a slit pattern corresponding to the rotation angles of the plurality of microlenses.

The invention discloses an organic light emitting diode with a visible-infrared multispectral band free switching function. The organic light emitting diode sequentially comprises an anode, a hole injection / transmission layer, an infrared light emitting unit, a charge generation layer, a visible light emitting unit, an electron injection / transmission layer and a cathode, the charge generation layer sequentially comprises a P-type semiconductor layer, a transparent conductive layer, a buffer layer and an N-type semiconductor layer, the P-type semiconductor layer is arranged adjacent to the visible light emitting unit, and the N-type semiconductor layer is arranged adjacent to the infrared light emitting unit. The infrared light-emitting unit is prepared by thermally activating the delayed fluorescent material, so that the internal quantum efficiency of the organic light-emitting diode is effectively improved. In addition, the charge generation layer with high conductivity is designed to be connected in series with the light-emitting units, so that an organic lighting source with a visible-infrared multispectral band free switching function can be constructed.

An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.

The application provides an OLED display panel and a control method thereof, and relates to the technical field of flat panel display with components specially suitable for light emission, such as organic light emitting diode, the application forms temperature-decay closed-loop compensation: temperature data and light emission efficiency decay amount are obtained through sensing detection, a temperature-decay kinetic model predicts future decay trend, driving adjustment dynamically changes parameters according to the prediction result, and the adjusted effect is verified in the next round of sensing detection, so that closed-loop control of continuous optimization is realized; the temperature-decay closed-loop compensation control method systematically associates light emission efficiency decay sensing and temperature sensing in time and space, realizes the change from passive compensation to active prediction through the establishment of the temperature-decay kinetic model, can take protective measures of reducing driving current in advance before temperature causes decay acceleration, and effectively prolongs the service life of the OLED display panel.

The present disclosure relates to an organic light emitting display device, and an organic light emitting display device according to an exemplary embodiment of the present disclosure includes a filler filling a gap between a second substrate and an organic light emitting diode, and a dam structure disposed in a non-display area and surrounding the filler. At least one of the dam structure and the filler includes a getter. The getter of the present disclosure is composed of magnesium oxide particles whose surface is modified by a first surface modification part made of an amino silane-based compound and a second surface modification part bonded to the first surface modification part and made of a compound including an acrylate group and a methacrylate group. Accordingly, an organic light emitting display device having high transparency and whose lifespan and durability are improved by minimizing the penetration of water and oxygen can be provided.

A compound is described as having a triplet excited state and a singlet excited state; wherein the triplet excited state comprises a lowest energy triplet sublevel, a middle energy triplet sublevel, and a highest energy triplet sublevel; and wherein an energy separation between the highest energy triplet sublevel and the lowest energy triplet sublevel (ZFS) is greater than an energy separation between the singlet excited state and a the lowest energy triplet sublevel. Also described is a compound represented by the following Formula I. These compounds should find application as luminescent materials in organic light emitting diodes (OLEDs).

The present invention relates to a method for manufacturing an organic light emitting diode deposition mask, the method comprising: preparing a metal plate having a thickness of 30 μm or more that has been rolled and annealed; etching the metal plate to have a thickness in the range of 15 μm to 25 μm; and forming a plurality of through-holes on the metal plate, the through-holes including a plurality of small surface holes and a plurality of large surface holes, wherein the etching of the metal plate includes: etching one or both surfaces of the rolled and annealed metal plate such that each of an average center line average surface roughness in a longitudinal direction, an average center line average surface roughness in a lateral direction, and an average center line average surface roughness in a diagonal direction of the first surface or the second surface of the metal plate is 0.1 μm to 0.3 μm, wherein the longitudinal direction is a rolling direction of the metal plate, the lateral direction is a direction perpendicular to the rolling direction of the metal plate, and the diagonal direction is a +45 degree direction or a -45 degree direction between the longitudinal direction and the lateral direction.

The application belongs to the technical field of OLED, and specifically comprises an organic compound for a double light-emitting layer blue light device and application thereof.The structural general formula of the organic compound is shown in the following.The application can fully exert the double light-emitting layer mechanism by directly connecting a benzofuranphenanthrol group at the 7th position of a benzanthracene nucleus, improve the device efficiency, and further, when the benzanthracene nucleus directly connected position is a phenanthrene group fragment on the benzofuranphenanthrol group, the electron mobility can be further enhanced, so that the prepared device obtains lower voltage and higher efficiency.In summary, the application improves the voltage and efficiency of the double light-emitting layer device through special design of the substituent and substitution site on the benzanthracene nucleus.I

This invention discloses a functional coating for an ultra-tough, high-barrier integrated PI substrate for flexible OLEDs and its coating process. The coating includes a PI substrate layer, with the functional coating disposed on the upper surface of the PI substrate layer. The functional coating is an organic-inorganic hybrid gradient structure layer. This layer is formed by curing the same composition, with the content of inorganic nano-components increasing in a gradient and the content of organic polymer components decreasing in a gradient. The functional coating simultaneously provides water and oxygen barrier protection and stress buffering to the PI substrate layer. The beneficial effects of this invention are: by employing a single-layer gradient structure, the physical interface between traditional multilayer structures is eliminated, fundamentally avoiding interlayer delamination during bending; the bottom flexible region has a matching modulus, buffering bending stress; the top high-inorganic-content region forms a dense barrier layer, achieving high water and oxygen barrier protection; through molecular chain interpenetration or chemical bonding, the coating and substrate form an integrated structure, significantly improving bending lifespan.

The present invention relates to the field of organic electroluminescent material preparation technology, and particularly, to a fluorenocarbazole tetradentate platinum(II) complex, an organic light-emitting diode material, a device, and an apparatus. By means of introducing a fluorene ring system at the 3,4-position of carbazole and introducing a substituent at the ortho-position of the benzene ring at the upper left, a novel tetradentate platinum(II) complex-based blue phosphorescent material is obtained. The proportion of components of the localized state (3LE) is increased in the excited triplet state of the cyclic tetradentate platinum(II) complex, thereby achieving a low shoulder peak, improved emission color purity of material molecules, and enhanced stability of materials. The provided materials all have good chemical stability and thermal stability, thereby facilitating the preparation of evaporation-type OLED devices. The organic electroluminescent device manufactured using the above-described compound as the light-emitting layer has a significant improvement in both the blue light index (BI) and service life, and can also reduce the turn-on voltage.

The invention discloses a Micro-OLED (Organic Light Emitting Diode) chip packaging structure, a Micro-OLED chip packaging method and a Micro-OLED display device. The packaging structure comprises a semiconductor wafer which is provided with a conductive through hole penetrating to a metal bonding pad on the front surface of the semiconductor wafer; the plurality of metal bumps are formed on the back surface of the semiconductor wafer and are electrically connected with the metal bonding pads on the front surface through the conductive through holes and the metal rewiring layer on the back surface; the Micro-OLED light emitting layer is formed on the front surface of the semiconductor wafer; and the transparent cover plate is bonded with the front surface of the semiconductor wafer through a supporting wall. According to the invention, the wafer-level chip size packaging process sequence of the Micro-OLED is optimized as follows: the through holes and the salient points are firstly manufactured on the back surface, and then the OLED is manufactured on the front surface. According to the method, the metal bonding pads are allowed to be led out from the two sides, three sides or four sides of the chip, and particularly, the large-current power supply / ground bonding pads are arranged at the four corners of the chip, so that the internal current distribution of the chip is remarkably optimized, the IR voltage drop is reduced, and thinner and smaller Micro-OLED wafer-level packaging with better electrical performance is realized.

The present invention relates to the use of transition metal-carbene complexes in organic light-emitting diodes (OLEDs), to a light-emitting layer, to a blocking layer for electrons or excitons, or to a blocking layer for holes, each comprising these transition metal-carbene complexes, to OLEDs comprising these transition metal-carbene complexes, to devices which comprise an inventive OLED, and to transition metal-carbene complexes.

This application belongs to the field of optical simulation technology, specifically disclosing an optical simulation method for organic light-emitting diode (OLED) devices containing microlens structures. The technical solution of this application first derives the light radiation and propagation characteristics of the nanoscale active stacked thin film structure in the OLED device, generating light source data for micrometer-scale simulation; then, based on the micrometer-scale microlens structure and encapsulation layer structure in the OLED device, it defines the optical transmission characteristics of each interface; next, combining the light source data, the optical transmission characteristics of each interface, and the curved surface structure of the microlens structure, it performs ray tracing on the OLED device including the curved surface structure; finally, it statistically analyzes and calculates the light emitted from the OLED device after ray tracing including the curved surface structure, obtaining the emission spectrum of the OLED device containing microlens structures. This application constructs an optical simulation method applicable to multi-scale microlens OLED devices containing complex three-dimensional curved surface structures.

The application belongs to the technical field of etching liquid, and particularly relates to a photoresist stripping liquid for OLED, a preparation method and application thereof. The photoresist stripping liquid comprises, with the total mass of the formula being 100%, 1-10% of organic alcohol amine, 2-5% of amidino compound, 0.1-3% of polyol, 0.01-0.2% of betaine type corrosion inhibitor, and the rest is organic solvent. The photoresist stripping liquid for OLED has excellent stripping performance and good protection effect on the Al layer. The photoresist stripping liquid is particularly suitable for stripping requirements of OLED devices containing Al, can safely strip the photoresist which is cross-linked and carbonized after solidification, and at the same time protects the Al process in the OLED device from being corroded, and has good application prospect.