142 results about "OLED" patented technology

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 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 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.

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.

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

This application relates to organic electroluminescent materials and devices. Organic metal compounds are provided. Formulations comprising these organic metal compounds are also provided. OLEDs and related consumer products utilizing the disclosed compounds and Pt complex compounds are additionally provided.

The present invention relates to an organic compound employed as a material for a light efficiency improvement layer (capping layer) provided in an organic light-emitting diode. The employment of the compound according to the present invention in a light efficiency improvement layer can implement a high-efficiency and long-lifespan organic light-emitting diode having enhanced low-voltage driving characteristics as well as improved luminous efficiency, color purity, lifespan characteristics, and the like, so that the compound can be industrially useful for various lighting and display devices.

This invention relates to a novel organic compound represented by chemical formula 1 and an organic light-emitting diode (OLED) containing the same. According to an embodiment of the invention, the OLED includes: a first electrode; a second electrode disposed opposite to the first electrode; one or more organic layers located inside the first electrode and the second electrode; and a capping layer located outside one or more of the first and second electrodes, the capping layer containing the novel organic compound represented by chemical formula 1.

The present invention relates to OLED devices and stacks for OLED devices that include a symmetric emissive-layer architecture. In one embodiment, the present invention relates to an emissive stack having three layers, wherein the top and bottom layers emit light in the same or similar color region while the middle layer emits light in a different color region than the other two layers. In such an embodiment, the three layers are in contact with each other with no other layers in between. The symmetric emissive-layer architecture of the present invention can be used to improve the color stability of OLED devices.

An in-cell touch display device is presented herein in which an in-cell touch sensor technology can be implemented in an organic light emitting diode display panel. The in-cell touch display device may include a substrate, a transistor formation layer on the substrate, the transistor formation layer including a semiconductor, a source electrode connected to the semiconductor, a drain electrode connected to the semiconductor, a gate electrode that overlaps the semiconductor, and a plurality of touch lines, and a light emitting element layer on the transistor formation layer, the light emitting element layer including an anode electrode, an emission layer on the anode electrode, a cathode electrode on the emission layer, and a bank layer on a portion of the anode electrode. The cathode electrode is connected to the plurality of touch lines, and the touch lines are closer to the cathode electrode than to the source and drain electrodes.

This invention provides a metal mask for high-pixel OLEDs and its manufacturing method, relating to the technical field of mask production. The metal mask for high-pixel OLEDs includes a metal mask body, upper etched holes, and lower etched holes. The upper etched holes are formed on one side of the metal mask body, and the lower etched holes are formed on the other side, with the upper and lower etched holes corresponding to each other. Adjacent lower etched holes are interconnected, and the ratio of the distance H2 from the connection point of two lower etched holes to the upper side of the metal mask body to the thickness H1 of the metal mask body is between 1 / 4 and 3 / 4. The manufacturing method of the metal mask for high-pixel OLEDs includes the following steps: steel strip feeding, low-temperature pre-etching to achieve reagent filling; main etching, followed by multiple acid pickling; water washing after acid pickling, and then drying and unloading. This achieves the technical effect of improving the production quality of the metal mask.

The application discloses a display panel and a compensation method. The compensation method establishes a matrix relationship between a whole-surface resistance network parameter and a light-emitting current and a whole-surface distribution voltage matrix of a negative terminal of a power supply based on the whole-surface resistance network parameter of the negative terminal of the power supply. The light-emitting current flowing through a driving transistor and an organic light-emitting diode is obtained according to a characteristic curve of the driving transistor. The voltage across the organic light-emitting diode and the whole-surface distribution voltage matrix of the negative terminal of the power supply are determined according to the light-emitting current. The compensation value of a data signal is obtained based on the voltage across the organic light-emitting diode and the whole-surface distribution voltage matrix of the negative terminal of the power supply. The superposition result of the data signal and the compensation value is input to the gate of the driving transistor. The voltage drop of the corresponding negative terminal of the power supply can be offset by the compensation value of the data signal. The brightness uniformity of each pixel circuit is improved, and the light-emitting brightness of each pixel circuit is improved as a whole.

An organic light emitting diode display device and a driving method thereof are provided. The organic light emitting diode display device includes a plurality of pixels arranged in a matrix of a plurality of rows and a plurality of columns, a plurality of gate 1 lines in contact with the plurality of pixels and providing gate 1 voltages to the plurality of pixels, a plurality of gate 2 lines in contact with the plurality of pixels of a portion of the plurality of columns and providing gate 2 voltages to the plurality of pixels of the portion of the plurality of columns, a plurality of gate 3 lines in contact with the plurality of pixels of another portion of the plurality of columns and providing gate 3 voltages to the plurality of pixels of the other portion of the plurality of columns, and a plurality of left data lines and a plurality of right data lines respectively positioned at both sides of the plurality of pixels of the plurality of columns. Accordingly, variation (ripple) of a high level voltage is reduced and distortion of a data voltage is minimized. Furthermore, degradation such as crosstalk is reduced.

An organic light emitting display device is disclosed. The organic light emitting display device includes a display panel, a display panel driver, and a power supply. The display panel includes a plurality of pixels. Each of the plurality of pixels includes a driving transistor including a gate electrode and an organic light emitting diode configured to emit light based on a first power voltage and a second power voltage in an emission period. The display panel driver is configured to apply a scan signal, an emission control signal, and a data signal to the plurality of pixels. The power supply is configured to generate the first power voltage, the second power voltage, and a third power voltage applied to the plurality of pixels in a non-emission period, and adjust a voltage level of the second power voltage and a voltage level of the third power voltage based on a display brightness of the display panel, wherein the third power voltage is supplied to an anode of the organic light emitting diode without passing through the driving transistor, and the second power voltage is supplied to a cathode of the organic light emitting diode.

The invention provides a multiplication type organic up-conversion imaging device with a tunable detection spectrum and a preparation method thereof. The device connects a multiplication type organic detector and an organic light-emitting diode in series, is formed by stacking multiple film layers, and comprises a transparent substrate, a bottom electrode, a photosensitive active layer, a middle transmission layer, a light-emitting layer and a top electrode from bottom to top. By switching the incident direction of the signal light, switching of a broadband infrared detection mode and a narrowband infrared detection mode can be realized in a single device. When light enters from the bottom electrode, the device has multiplication response capability to visible light-near-infrared wide-spectrum light; when light enters from the top electrode, the device is converted into a narrowband detection mode with a peak value in a near-infrared band. In addition, incident infrared photons are directly converted into visible photons through the up-conversion technology, the visible photons are displayed on the device, and efficient imaging of infrared light is achieved. The up-conversion imaging device has unique optical and electrical dual-signal readout and spectrum tunable characteristics, so that the up-conversion imaging device has higher adaptability to complex application scenes.

An OLED display panel includes: a display substrate including a display region and a non-display region surrounding the display region; a retaining wall which is located in the non-display region and surrounds the display region; a residual layer located between the retaining wall and the display region; a plurality of light-emitting structures in the display region; and a packaging structure which covers a plurality of light-emitting structures and is connected to the residual layer and the display substrate.

An organic light emitting diode display according to an exemplary embodiment includes: a substrate; a first buffer layer on the substrate; a first semiconductor layer on the first buffer layer; a first gate insulating layer on the first semiconductor layer; a first gate electrode and a blocking layer on the first gate insulating layer; a second buffer layer on the first gate electrode; a second semiconductor layer on the second buffer layer; a second gate insulating layer on the second semiconductor layer; and a second gate electrode on the second gate insulating layer.

A cyclic azine compound of formula (1) is provided. A material for an organic light emitting diode containing the cyclic azine compound of formula (1) is also provided. An organic light emitting diode containing the cyclic azine compound which exhibits both excellent driving voltage characteristics and excellent current efficiency characteristics is also provided.

The present disclosure provides devices and methods thereof. An inorganic layer is disposed on a substrate, in which the inorganic layer defines sub-pixels of the device. The inorganic layer includes a plurality of overhang structures. The device includes a plurality of sub-pixels, each sub-pixel including an anode, an organic light-emitting diode (OLED) material disposed over and in contact with the anode, a cathode disposed over and in contact with the OLED material, and an encapsulation layer disposed over the OLED material. A global passivation layer disposed over and in direct contact with a first overhang structure of the plurality of overhang structures, a second overhang structure of the plurality of overhang structures, and the encapsulation layer of each of the sub-pixels.

Transparent organic light-emitting diodes (OLEDs) can be used as luminescent pixels in near-eye displays for augmented reality applications. Light from these pixels can be switched and / or directed using tunable beam-guiding and focusing elements, also known as tunable microlenses. These tunable microlenses are arranged in an array and paired with the pixel array, for example, by being embedded in a spectacle lens. The tunable microlenses use rapidly switching half-wave plates to selectively focus and / or tilt the light from the pixels. By switching the light from the pixels between resolvable positions / angles at a rate faster than the flicker fusion threshold (e.g., 60 Hz), the tunable microlenses can efficiently double the apparent resolution of the near-eye display. And by switching between focused and unfocused states at the same rate, the tunable microlenses can efficiently overlay virtual images from the pixels onto a real-world image visible through the pixels.

A light emitting display can be formed from tiles mounted within a certain distance range with respect to each other and with an established blending region positioned towards the edges of the tiles. A tile can be a matrix of light emitting elements, such as LEDs, OLEDs, quantum dots, or other element that emits light. The tolerance of spacing between tiles can allow for less precision in alignment during installation in a theatre, thereby reducing display assembly cost but still maintaining a display for displaying an image at a high quality with reduced or eliminated appearance of visual artifacts between tiles.

A display device array substrate comprises a display area including a plurality of light-emitting elements such as OLEDs corresponding to a plurality of pixel areas PA. A sealing structure 130 dispose

The present invention is entitled: Naphthalene diimide derivatives incorporating piperidine as cathode interface materials for organic solar cells. This invention relates to the field of materials science, specifically to a compound and its applications, preparation methods, organic solar cell cathode interface materials, and organic solar cells. The structure of the compound is as follows: [structure omitted for brevity]. Wherein, n is a natural number between 0 and 6, and X1 and X2 are independently selected from [selections omitted for brevity]. This compound can be used as a cathode interface material for organic solar cells, achieving high photoelectric conversion efficiency. By incorporating piperidine, the photostability of the material is improved, exhibiting stronger photostability compared to commonly used tertiary amine side chain naphthalene diimide derivatives. This compound can also be applied to devices such as organic light-emitting diodes and perovskite solar cells.

An organic light-emitting diode (OLED) and a method of manufacturing the OLED are provided. The OLED includes: a first electrode and a second electrode facing each other; an organic emitting layer between the first electrode and the second electrode; and a hole injection layer between the first electrode and the organic emitting layer, wherein the hole injection layer includes a second metal compound layer and a second metal layer, the second metal compound layer being between the first electrode and the organic emitting layer, and the second metal layer being between the second metal compound layer and the organic emitting layer.