Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Wuhan China Star Optoelectronics Technology Co., Ltd.

Other

Semiconductor Display Technology Co., Ltd.

Wuhan China Star Optoelectronics

Yu Gu

Jiajia Luo

Jinchang Huang

Xianjie Li

Lin Y Yang

Yamei Bai

Hsianglun Hsu

Xu Wang

Hsiang-lun Hsu

Ke Ding

Zeyi Tu

An OLED display panel and an OLED display device are disclosed. In the OLED display panel, a ratio of a width of a side of a first pixel opening adjacent to a pixel electrode layer to a length of a lateral surface of the first pixel opening is greater than a ratio of a width of a side of a second pixel opening adjacent to the pixel electrode layer to a length of a lateral surface of the second pixel opening, such that the nonuniform brightness between a first display area and a second display area is improved or even eliminated.

OLED display panel and OLED display device

The present application provides a display panel including a substrate, a thin film transistor layer, an electrode layer, a pixel definition layer, and a light-emitting function layer. layer. An orthographic projection area of the electrode on the substrate is D, an orthographic projection area of an area connecting the light-emitting function portion and the electrode on the substrate is P, and a reflection compensation parameter of the pixel is D/P. A display area comprises a first display area and a second display area. The reflection compensation parameter of the pixel in the first display area is less than the reflection compensation parameter of the pixel in the second display area.

Display panel

The present disclosure relates to the field of organic light-emitting materials, and more particularly, to a thermally activated delayed fluorescence material having red, green, or blue color, a synthesis method thereof, and application thereof. The thermally activated delayed fluorescence material having red, green, or blue color has the following structural formula: 

Thermally activated delayed fluorescence material having red, green, or blue color, synthesis method thereof, and application thereof

A dithiazine-based hole transport material, preparing method thereof and an organic light-emitting device are provided; a molecular structural formula of the hole transport material is as following: wherein Rand Rare each an electron-donating group.

Dithiazine-based hole transport material, preparing method thereof, and organic light-emitting device

An efficient blue-green to orange-red thermally activated delayed fluorescence material, a manufacture method, and an application thereof are provided. This disclosure solves the technical problems in the art by cleverly synthesizing a series of thermally activated delayed fluorescence materials, which have lower singlet-triplet energy difference, high luminous efficiency, and fast reverse intersystem crossing constant, and simultaneously fine-tuning the structure to cover the spectrum from blue-green light to orange-red light. Further, their structures are confirmed by nuclear magnetic resonance and mass spectroscopy, and their photophysical properties are also determined. Therefore, these luminescent thermally activated delayed fluorescence (TADF) materials are applied to light-emitting layer for manufacturing a series of organic light-emitting diodes (OLEDs) having high performance, which have great application prospects and economic value.

Efficient blue-green to orange-red thermally activated delayed fluorescence material, manufacture method, and application thereof

An acridine derivative including a structure of formula (I) is provided. The acridine derivative can be used as a fluorescent material, in particular, it is included in an organic light-emitting layer as a dark blue thermally-activated delayed fluorescent material, thereby a series of high-performance electrothermally activated delayed fluorescent devices are produced.

Acridine derivatives and organic electroluminescent device

A thermally activated delayed fluorescence (TADF) material including a compound represented by formula (I). The TADF material can be applied to an organic light-emitting layer, thereby realizing a series of high-performance TADF electronic devices.

Thermally activated delayed fluorescence material, organic electroluminescent device, and display panel

The present invention provides a green light thermal activation delayed fluorescent material, a synthesizing method thereof, and an electroluminescent device. The green light thermal activation delayed fluorescent material is a target compound having a molecular structure of D-A and synthesized by a reaction of an electron donor and an electron acceptor, wherein the electron acceptor being a planar electron acceptor in an ultra-low triplet energy state, and a triplet energy state of the target compound ranging from 2.0 to 3.0 eV. The method for synthesizing a green light thermal activation delayed fluorescent material includes the following steps: a reaction solution preparation step; a target compound synthesis step; an extraction step; and a target compound purification step. The electroluminescent device includes: a substrate layer; a hole transporting and injecting layer; a light emitting layer; an electron transporting layer; and a cathode layer.

Green light thermally activated delayed fluorescence (TADF) material and application thereof

An organic light-emitting diode (OLED) display panel and a manufacture method thereof are provided, which can enable the organic material encapsulated inside to have the function of removing water and oxygen, thereby further ensuring a reliable lifespan of the OLED display panel.

Organic light-emitting diode display panel and manufacture method thereof

A thermal active delay fluorescent material includes a structural formula in formula 1:  The application adopts a strong electron-withdrawing group of a large conjugate plane as an electron acceptor, and combines an electron acceptor with a strong electron donor to achieve a deep red light thermal active delay fluorescent material with a typical TADF characteristics and a low energy level. The thermal active delay fluorescent material of the application is a deep red light TADF material having a lower single triplet energy level difference, an ultrafast reverse intersystem crossing speed and a high luminous efficiency, and when it is used as a luminescent material for an organic light-emitting diode device, it can promote a luminous efficiency of the organic light-emitting diode device.

Thermal active delay fluorescent material, method for manufacturing same, and organic light-emitting diode device

The present invention provides a method of fabricating an organic light emitting diode display, including forming an exfoliation layer to be peeled off on the base substrate corresponding to two of the first predetermined area, the second predetermined area, and the third predetermined area; using a predetermined mask to form an organic light emitting layer on the exfoliation layer and the base substrate which is not covered by the exfoliation layer; and heating the base substrate to peel off the exfoliation layer and the organic light emitting layer on the exfoliation layer, while remaining the organic light emitting layer not covered by the exfoliation layer.

Method of fabricating organic light emitting diode display

An organic electroluminescent device is provided, including a substrate and a composite anode structure disposed thereon, wherein the composite anode structure includes a lower metal oxide layer, a metallic silver layer and an upper metal oxide layer, wherein metallic silver at portions of a surface of the metallic silver layer which are not covered by the upper metal oxide due to defects of the upper metal oxide layer includes silver oxide. During the preparation of the organic electroluminescent device, the substrate is stored in the atmosphere for a long time while maintaining the performance of the substrate substantially unchanged, thereby improving the performance and the yield of the device.

Organic electroluminescent device and method for preparing the same

An organic light-emitting device includes a substrate, a first electrode layer, a light-emitting layer, and a second electrode arranged in layers. The light-emitting layer includes primary pixels, each of which includes three or more subpixels. One of the subpixels is a white subpixel. The other subpixels includes a basic subpixel which has a light-emitting material necessary to synthesize the white light. The basic subpixels includes an original color zone and a synthesized color zone. The light-emitting material for the synthesized white light corresponding to the synthesized color zone of the basic subpixels and another kind of light-emitting material for the synthesized white light are layered or mixed to form the subpixel with the white light. The brightness and color of the image is enhanced, power consumes less, and the life span of the organic light-emitting device is extended.

Organic light-emitting device and method of manufacturing the same

An organic light-emitting device proposes a primary pixel including one or more first subpixel, second subpixel, and third subpixel. The first subpixel is a white subpixel. The second subpixel includes the first light-emitting material for synthesizing the white light. The third subpixel includes the second light-emitting material. The organic light-emitting device further includes a third light-emitting material. The material for the second subpixel includes an original color zone and a synthesized color zone. The first light-emitting material for synthesizing the white light corresponding to the synthesized color zone. The transmission distance of the excitons produced by the second light-emitting material is smaller than the thickness of the function layer with the second light-emitting material. By using the organic light-emitting device, the brightness and color saturation of an image is well improved, power consumes less, and the lifespan of the organic light-emitting device is prolonged.

Growing community of inventors

Wuhan, China

Yu Gu