Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic light emitting device and manufacturing method thereof

A technology for organic light-emitting devices and pixel electrode layers, which is applied in the manufacturing of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of uneven luminous brightness and uneven film surface of pixel layer 93

Active Publication Date: 2021-02-26
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because the pixel ink 92 of inkjet printing is in the drying film-forming process, the volatilization and drying speed of the edge part of the pixel ink 92 is faster than the middle part of the pixel ink 92, thereby causing the two sides of the film surface to be high and the middle to be low, causing the pixel layer 93 film surface to be uneven. Uniformity, known as the coffee-ring effect (coffee-ring effect), will result in uneven final luminous brightness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic light emitting device and manufacturing method thereof
  • Organic light emitting device and manufacturing method thereof
  • Organic light emitting device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an organic light-emitting device and a manufacturing method thereof. The organic light emitting device includes a thin film transistor substrate, a pixel electrode layer, a pixel defining layer and a pixel layer in order from bottom to top. Wherein, the pixel layer is formed by spraying pixel ink on the pixel electrode layer in the pixel defining groove by inkjet printing and drying to form a film, and the pixel ink contains a hydrophobic solvent to be hydrophobic. The manufacturing method of the organic light-emitting device includes the steps of: providing a thin film transistor substrate, manufacturing a pixel electrode layer, manufacturing a pixel definition layer, and manufacturing a pixel layer. In the present invention, adding a hydrophobic solvent to the pixel ink to make it hydrophobic can solve the coffee ring effect in the inkjet printing process, make the film surface of the pixel layer uniform, and thereby improve the luminous performance.

Description

technical field [0001] The invention relates to the display field, in particular to an organic light-emitting device and a manufacturing method thereof. Background technique [0002] Organic light emitting devices (Organic Light Emitting Diode, OLED) have been widely used in the fields of display, lighting, and smart wear due to their good self-luminous characteristics, high contrast, and fast response. [0003] At present, there are two key factors restricting the mass production of inkjet printing (IJP) organic light-emitting devices. One is the performance of the device, that is, the difficult problem of uniformity of light emission. Another is the lifetime of the organic light emitting device. Among them, the uniformity of light emission is determined by the film-forming characteristics of the pixel layer between the retaining wall structure (Bank). The film surface is uniform and the film layers are in good contact, so the light is uniform and the brightness performanc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/56H01L21/77C09D11/033
CPCC09D11/033H10K71/135H10K59/122H10K59/1201
Inventor 毕研亮
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com