Flexible Foldable Display Screen Substrate Peeling
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Solution Overview
Problem
Existing flexible display screens face issues where the display effect worsens due to damage of the screen circuit and driving chip during bending or peeling, and they fail to fully utilize the flexible screen body to improve display quality.
Innovation Solution
A method for manufacturing a flexible foldable display screen involves forming a pixel sparse area at the edge of the display area with reduced pixel unit density and larger pitch to accommodate signal lines, concentrating non-bendable components in a curing assembling area, and using a laser lift-off technique to peel off the glass substrate, ensuring reliable signal and power transmission without borders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid substrate is used to ensure structural stability, then the display screen maintains its shape well, but the display screen cannot be folded or rolled
Solution Approach 1:
The patent replaces the traditional rigid substrate with a flexible transparent film that has sufficient mechanical strength to support the display structure while enabling folding and rolling. This flexible film serves as the new substrate, allowing the display screen to be folded without compromising structural integrity or causing damage to internal components.
Solution Approach 2:
The patent employs composite material structures throughout the display screen, particularly in the flexible substrate composition and the stacked layer architecture. The flexible substrate itself is a composite structure, and the entire display uses multiple layers of different materials (transparent conductive oxide, organic light-emitting materials, hole transport layers, etc.) to achieve both flexibility and functional performance.
2Volume of moving object
If the display screen structure is made compact for portability, then the display screen can be folded, but the contact between layers may cause short circuits
Solution Approach 1:
The patent divides the display screen into distinct functional layers with clear boundaries and separation. Each layer (transparent conductive oxide layer, hole transport layer, light-emitting layer, electron transport layer, cathode, anode) is segmented and positioned at specific heights, preventing electrical contact between adjacent layers even when folded. The stacked architecture with defined spacing ensures insulation while maintaining compactness.
3Ease of manufacture
If traditional rigid substrate materials are used, then manufacturing processes are well-established, but the display screen cannot achieve flexible folding
Solution Approach 1:
The patent changes the fundamental parameter of substrate rigidity from rigid to flexible while maintaining manufacturing feasibility. The flexible transparent film substrate is designed with specific mechanical properties (flexibility, strength, transparency) that allow it to be processed using adapted manufacturing techniques while enabling folding functionality. This parameter change transforms the substrate from a rigid plate to a flexible component that can be folded without compromising manufacturability.
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 approach enhances the display quality by eliminating border effects, ensuring reliable transmission of control and power signals, and preventing damage to the screen circuit and driving chip during bending, thus fully utilizing the flexible screen body's characteristics.
Implementation Method 1
peeling off a part of the glass substrate corresponding to the display area
Data Source
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AI summary
The present disclosure provides a flexible foldable display screen and a manufacturing method thereof. The method includes: forming a flexible screen body on a glass substrate, wherein the flexible screen body includes a display area and a curing assembling area formed at an end of the flexible screen body; disposing a controlling IC in the curing assembling area; and peeling off a glass substrate corresponding to the display area. In the present disclosure, characteristics of the present flexible screen bodies may be fully utilized and existed display screen products may be fully utilized, to form a flexible display screen that meets the requirement of the market. By concentrating the components which are not easily bent or folded on the curing assembling area of the flexible screen body that does not need to be peeled off, technical problems that display effect becomes worse due to the screen circuit and the driving chip are damaged during bending or peeling process of the flexible screen body are solved.