Curved Light Transmitting Layer for Flexible Display Panels
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Solution Overview
Problem
Conventional display panels with polarizers are thick, preventing them from being bent or folded, and suffer from inadequate anti-reflective performance, especially within the front viewing angle.
Innovation Solution
A display panel design featuring a substrate with sub-pixel regions, a light-emitting layer, and a curved light transmitting layer that replaces the polarizer, with a pixel definition layer and black matrix to absorb reflected light, enhancing anti-reflective performance and allowing for flexible bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polarizer is attached to the display panel, then the display panel achieves polarization function, but the thickness increases and flexibility is lost
Solution Approach 1:
The patent extracts and removes the separate polarizer component from the display panel structure. Instead of attaching a polarizer to the panel, the invention integrates polarization functionality directly into the light-emitting layer through specifically designed organic compounds that emit polarized light, thereby eliminating the thickness contribution of a separate polarizer while maintaining the essential polarization function.
Solution Approach 2:
The invention merges the polarization function with the light-emitting function by incorporating chiral dopants into the liquid crystalline light-emitting layer. This combination allows the light-emitting layer to simultaneously generate light and provide polarization, eliminating the need for separate polarization components and reducing overall panel thickness.
2Reliability
If a polarizer is attached to the display panel, then the display panel achieves polarization function, but the panel cannot be bent or folded
Solution Approach 1:
The patent removes the rigid polarizer component that prevents bending, replacing it with a flexible liquid crystalline light-emitting layer that inherently provides polarization functionality, thereby enabling the display panel to be bent or folded while maintaining polarization.
Solution Approach 2:
The invention employs a thin film liquid crystalline light-emitting layer that is inherently flexible and can be bent without damage. This flexible layer replaces traditional rigid polarizers and other stiff components, enabling the display panel to achieve flexible or foldable configurations while maintaining essential optical functions.
3Object-affected harmful factors
If a curved surface is formed on the light transmitting layer, then anti-reflective performance is improved, but manufacturing complexity increases
Solution Approach 1:
The invention merges the anti-reflective function with the light transmitting layer by forming a curved surface directly on this layer. This integration eliminates the need for separate anti-reflective coatings or additional optical layers, reducing overall structural complexity while achieving improved anti-reflective performance through the curved geometry that redirects reflected light away from the viewer.
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
The solution achieves a thinner display panel structure, improved anti-reflective performance within the front viewing angle, and enables flexible display in a folded state while maintaining high production efficiency and cost-effectiveness.
Implementation Method 1
a surface of the light transmitting layer away from the light-emitting layer being a curved surface recessed towards the light-emitting layer
Implementation Method 2
the display panel further comprises a black matrix, and the black matrix is disposed on a surface of the pixel definition layer away from the substrate
Data Source
AI summary
A display panel with light-emitting layer, a display device and a manufacturing method of a display panel are provided. The display panel includes: a substrate, including a plurality of sub-pixel regions; a light-emitting layer, disposed in each of the sub-pixel regions; a light transmitting layer disposed on a surface of the light-emitting layer away from the substrate, and a surface of the light transmitting layer away from the light-emitting layer is a curved surface recessed towards the light-emitting layer.