Touch Display Panel Reflection-Reducing Layer for Thin Foldable OLEDs
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Solution Overview
Problem
The existing organic light emitting display technology requires a circular polarizer and a touch screen bonded with glue, resulting in a thick display module that affects the foldability of flexible screens.
Innovation Solution
A touch display panel design incorporating a base substrate, display structure layer, touch structure layer, and reflection reducing structure layer with a first and second insulation layer and a first light absorption layer, which replaces the circular polarizer to reduce reflection and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a circular polarizer and touch screen are bonded with glue to form a display module, then reflection reduction and touch functionality are achieved, but the overall thickness increases affecting foldability
Solution Approach 1:
The patent merges the reflection reducing structure layer with the touch structure layer into a single integrated layer, eliminating the need for separate circular polarizer and touch screen components that would require glue bonding. This integration maintains reflection reduction functionality while significantly reducing overall thickness to enable foldability
Solution Approach 2:
The patent extracts and eliminates the circular polarizer component from the traditional display module structure, replacing it with an integrated reflection reducing structure layer that combines reflection reduction and touch functionality, thereby removing the thickness-contributing element
2Object-affected harmful factors
If a circular polarizer is used to reduce reflection, then contrast is improved, but the display module thickness increases
Solution Approach 1:
The reflection reducing structure layer is merged with the touch structure layer, combining two previously separate functions into one integrated component. This eliminates the need for a separate circular polarizer while maintaining reflection reduction capability and reducing overall thickness
3Object-affected harmful factors
If multiple layers (insulation layers and light absorption layer) are laminated to reduce reflection, then reflectivity is reduced, but structural complexity increases
Solution Approach 1:
Multiple functional layers (insulation layers and light absorption layer) are merged into a single integrated reflection reducing structure layer. This consolidation maintains the optical functionality of reducing reflectivity while simplifying the overall structure by eliminating the need for separate laminated layers
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 design achieves reduced reflectivity and thickness, improving foldability while maintaining touch functionality and optical performance.
Implementation Method 1
a first light absorption layer and a second insulation layer that are laminated, wherein the first light absorption layer includes a plurality of first light absorption patterns
Data Source
AI summary
The present disclosure provides a touch display panel and a display device. The touch display panel includes: a base substrate; a display structure layer arranged at a side of the base substrate, and having a plurality of pixels; a touch structure layer arranged at a side of the display structure layer away from the base substrate, and comprising a plurality of touch openings exposing the plurality of pixels; and a reflection reducing structure layer arranged at a side of the touch structure layer away from the display structure layer, and comprising a first insulation layer, a first light absorption layer and a second insulation layer that are laminated; the first light absorption layer comprises a plurality of first light absorption patterns corresponding to the touch openings, and orthographic projections of the touch openings on the base substrate cover orthographic projections of the first light absorption patterns on the base substrate.