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A kind of oled display substrate and its manufacturing method, display device

A technology for display substrates and manufacturing methods, applied in semiconductor/solid-state device manufacturing, organic light-emitting device manufacturing/processing, electric solid-state devices, etc., capable of solving problems such as light leakage, display color mixing, and color mixing

Active Publication Date: 2021-04-06
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are multiple sub-pixels separated by the pixel-defining layer formed on the OLED display substrate. Different sub-pixels can produce monochromatic light of different colors. There will be problems of light leakage and color mixing between adjacent sub-pixels, such as red sub-pixels. When the light-emitting unit emits light, due to the isotropy of light emission, light will be emitted from the adjacent green sub-pixel area, causing color mixing on the display and affecting the display effect

Method used

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  • A kind of oled display substrate and its manufacturing method, display device
  • A kind of oled display substrate and its manufacturing method, display device
  • A kind of oled display substrate and its manufacturing method, display device

Examples

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Effect test

Embodiment 1

[0054] This embodiment provides an OLED display substrate, including:

[0055] substrate substrate;

[0056] a thin film transistor array located on the base substrate;

[0057] a planarization layer covering the thin film transistor array;

[0058] a transparent first electrode on the flat layer;

[0059] a pixel-defining layer made of a light-shielding material on the first electrode, the pixel-defining layer defining a plurality of sub-pixel regions;

[0060] a light-emitting layer and a second electrode located in the sub-pixel region;

[0061] The flat layer includes grooves corresponding to gaps between adjacent sub-pixels, and the pixel defining layer completely fills the grooves.

[0062] In this embodiment, a groove is formed on the flat layer at the gap between adjacent sub-pixels, and the pixel defining layer made of a light-shielding material completely fills the groove, so that when the light-emitting unit of the sub-pixel emits light, the emission Light to a...

Embodiment 2

[0074] This embodiment provides a display device including the OLED display substrate as described above. The display device can be any product or component with a display function, such as a TV, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

Embodiment 3

[0076] This embodiment provides a method for fabricating an OLED display substrate, including:

[0077] forming a thin film transistor array on a base substrate;

[0078] forming a planarization layer covering the thin film transistor array;

[0079] forming a transparent first electrode on the flat layer;

[0080] forming a pixel defining layer using a light-shielding material, the pixel defining layer defining a plurality of sub-pixel regions;

[0081] forming a light-emitting layer and a second electrode in the sub-pixel area;

[0082] Forming the flat layer specifically includes:

[0083] forming a flat layer with grooves corresponding to the gaps between adjacent sub-pixels;

[0084] Forming the pixel defining layer specifically includes:

[0085] A pixel defining layer is formed that completely fills the grooves.

[0086] In this embodiment, a groove is formed on the flat layer at the gap between adjacent sub-pixels, and the pixel defining layer made of a light-shi...

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Abstract

The invention provides an OLED display substrate, a manufacturing method thereof, and a display device, belonging to the field of display technology. Wherein, the OLED display substrate includes: a base substrate; a thin film transistor array located on the base substrate; a planar layer covering the thin film transistor array; a first electrode located on the planar layer; A pixel defining layer made of a light-shielding material on the electrode, the pixel defining layer defines a plurality of sub-pixel regions; a light-emitting layer and a second electrode located in the sub-pixel regions; the planar layer includes corresponding adjacent sub-pixels gaps between grooves, the pixel defining layer completely filling the grooves. The technical solution of the present invention can avoid the problems of light leakage and color mixing existing in adjacent sub-pixels.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an OLED display substrate, a manufacturing method thereof, and a display device. Background technique [0002] Flat panel display includes LCD display (liquid crystal display), OLED (organic light emitting diode) display, electronic ink display and so on. [0003] Organic Light Emitting Diode (OLED) displays are recognized by the industry as the second largest after Liquid Crystal Displays (LCDs) due to their thinness, active light emission, fast response speed, wide viewing angle, rich colors, high brightness, low power consumption, high and low temperature resistance and many other advantages. The third-generation display technology can be widely used in smart phones, tablet computers, TVs and other terminal products. [0004] A plurality of sub-pixels separated by a pixel defining layer are formed on the OLED display substrate. Different sub-pixels can generate monoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/1213H10K59/122H10K50/80H10K71/00Y02E10/549H10K59/38H10K59/124H10K59/126H10K50/865H10K59/351H10K59/12H10K77/10
Inventor 刘凤娟宋泳锡
Owner BOE TECH GRP CO LTD