Array Substrate with Integrated UV Absorbing Layer

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional display devices fail to effectively absorb ultraviolet light, which can cause eye damage and result in vision degradation, and the addition of a separate ultraviolet absorbing layer increases the device's thickness, making it less conducive to thinning and lighting.

Innovation Solution

An array substrate with a pattern of an active layer in the thin film transistor region and a transparent ultraviolet absorbing layer in an open region, both formed in the same layer, positioned in the light outgoing direction of the organic light-emitting layer, made of materials like indium gallium zinc oxide, to absorb ultraviolet light and reduce device thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a separate ultraviolet absorbing layer is added to the display device, then the ultraviolet light absorption capability is improved, but the device thickness increases

Engineering Contradiction:

Improveultraviolet light absorptionVSAvoiddevice thickness

Core Design Contradiction:

Object-affected harmful factorsVSLength of stationary object

Solution Approach 1:

The patent combines the ultraviolet absorbing layer with the color filter layer into a single integrated structure. The color filter layer is configured to include both color filtering functionality and ultraviolet absorption functionality, eliminating the need for a separate ultraviolet absorbing layer and thereby reducing device thickness while maintaining effective UV protection

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The color filter layer is designed to perform multiple functions simultaneously: it filters visible light to produce the desired display colors and absorbs ultraviolet light to protect against eye damage. This multi-functional design allows one layer to replace what would traditionally require separate layers, reducing overall device thickness

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If a separate ultraviolet absorbing layer is added to the display device, then the ultraviolet light absorption capability is improved, but the fabrication process becomes more complex

Engineering Contradiction:

Improveultraviolet light absorptionVSAvoidfabrication process complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the ultraviolet absorbing layer and color filter layer into a single integrated layer structure, which simplifies the fabrication process by reducing the number of deposition and patterning steps required. Instead of fabricating separate layers for UV absorption and color filtering, the integrated design allows for a more streamlined manufacturing process

Inventive Principle:

Principle #5Merging (Combining)

3Object-affected harmful factors

If a separate ultraviolet absorbing layer is added to the display device, then the ultraviolet light absorption capability is improved, but the device weight increases

Engineering Contradiction:

Improveultraviolet light absorptionVSAvoiddevice weight

Core Design Contradiction:

Object-affected harmful factorsVSWeight of stationary object

Solution Approach 1:

The patent combines the ultraviolet absorbing layer with the color filter layer into a single integrated structure, eliminating the need for additional materials and layers that would increase device weight. The integrated design uses the same or overlapping material compositions to achieve both color filtering and UV absorption functions

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration effectively reduces eye damage from ultraviolet light while minimizing the overall thickness of the display device, simplifying the fabrication process and eliminating the need for a separate color filter substrate, thus enhancing the device's thinness and manufacturing ease.

Implementation Method 1

the pattern of the absorbing layer is located in a light outgoing direction of the pattern of the organic light-emitting layer, and is made of a transparent material having an ultraviolet absorbing function

Methodology Applied

Scientific EffectUltraviolet absorption: Absorption (EM radiation)

Data Source

PatentUS9437663B2Array substrate and fabrication method thereof, and display device

Publication Date: 2016.09.06 BOE TECHNOLOGY GROUP CO LTD

AI summary

An array substrate and a fabrication method thereof, and a display device are provided. The array substrate comprises: a pattern of an organic light-emitting layer (11); a pattern of an active layer (4a) located in a thin film transistor region and a pattern of an absorbing layer (4b) located in an open region, which are arranged in a same layer, wherein, the pattern of the absorbing layer (4b) is located in a light outgoing direction of the pattern of the organic light-emitting layer (11), and is made of a transparent material having an ultraviolet absorbing function. In this way, the pattern of the absorbing layer located in the open region can absorb ultraviolet light from outgoing light, so that damage to eyes caused by the outgoing light can be reduced; and the pattern of the active layer and the pattern of the absorbing layer are arranged in a same layer, which, as compared with a manner of separately arranging a layer of an ultraviolet absorbing layer in the array substrate, can reduce a thickness of the array substrate, which is conducive to lighting and thinning a display device.