Flexible Touch Display Module Polarizer Integration
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Solution Overview
Problem
Current flexible touch control display modules require an externally attached polarizer, increasing their thickness and production cost due to the need for a four-layer film structure.
Innovation Solution
A flexible touch control display module design that integrates a polarizing film layer with an adhesive, photo alignment, and protective layers directly on the touch control layer, eliminating the need for an external polarizer and reducing module thickness by forming the touch control, photo alignment, and protective layers on the thin film encapsulation layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external polarizer is attached to the display module, then the display performance is ensured, but the thickness of the flexible touch control display module is increased
Solution Approach 1:
The patent merges the polarizing film with the touch control layer into a single integrated structure. The polarizing film is formed directly on the touch control layer through photoalignment treatment, eliminating the need for a separate external polarizer attachment. This integration maintains display performance while reducing overall module thickness.
Solution Approach 2:
The touch control layer serves multiple functions: it provides touch control functionality and simultaneously acts as the substrate for the polarizing film. The photoalignment layer on the touch control layer provides both alignment guidance for liquid crystals and polarizing functionality, combining multiple roles into a single component.
2Reliability
If an external polarizer is attached to the display module, then the display performance is ensured, but the production cost is increased
Solution Approach 1:
The patent combines the polarizing film production with the touch control layer fabrication process. The photoalignment layer is formed on the touch control layer using standard photoalignment treatment, and the polarizing film is created in-situ, eliminating separate production steps and reducing manufacturing complexity and cost.
Solution Approach 2:
The patent extracts the polarizing function from the separate external polarizer component and integrates it into the touch control layer structure. This eliminates the need for additional polarizer materials and their associated production costs while maintaining the necessary display performance.
3Reliability
If a four-layer film structure polarizer is used, then the polarizing function is achieved, but the thickness is increased
Solution Approach 1:
The patent uses a thin photoalignment layer formed on the touch control layer to provide polarizing functionality. This thin film approach replaces the traditional thick four-layer film structure while maintaining the polarizing function, significantly reducing the overall thickness of the polarizer component.
Solution Approach 2:
The patent changes the structural parameters of the polarizer from a four-layer film structure to a single-layer photoalignment layer with photoalignment treatment. This parameter change reduces the number of layers and overall thickness while preserving the essential polarizing function through the photoalignment properties of the layer.
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 design reduces the overall thickness and production costs of flexible touch control display modules by integrating the polarizing components within the module, minimizing external components and fittings.
Implementation Method 1
The adhesive layer is disposed between the touch control layer and the photo alignment layer, such that the photo alignment layer is adhered to the touch control layer
Implementation Method 2
The photo alignment layer is disposed on the touch control layer
Implementation Method 3
an organic light emitting diode (OLED) light emitting layer
Implementation Method 4
a thin film encapsulation (TFE) layer instead of a package glass
Data Source
AI summary
A flexible touch control display module includes an array substrate, an organic light emitting diode (OLED) light emitting layer, a thin film encapsulation layer, a touch control layer, and a polarizing film layer. The polarizing film layer includes an adhesive layer, a photo alignment layer, and a protective layer. The photo alignment layer is disposed on the touch control layer, and the adhesive layer is disposed between the touch control layer and the photo alignment layer, such that the photo alignment layer is adhered to the touch control layer, and the protective layer is disposed on the photo alignment layer.