Display Device Polarization Module Thickness Reduction
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Solution Overview
Problem
Existing OLED display devices have a thickness issue due to the integration of a separate polarizer component, which hinders flexibility and ultra-thinness.
Innovation Solution
A display device with a polarization module comprising a phase retardation layer and a linear polarization layer, where the display panel or touch panel is reused as the substrate, potentially omitting the bonding adhesive layer to reduce thickness, and incorporating an interlayer dielectric layer or bonding adhesive layer for integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate polarizer component is integrated with the display panel through an adhesive material, then the polarization function is achieved, but the thickness of the display device increases
Solution Approach 1:
The patent merges the polarizer component with the display panel by directly forming the phase retardation layer and linear polarization layer on the display panel substrate, eliminating the need for separate polarizer components and adhesive materials. This integration reduces the overall thickness while maintaining the polarization function through the combined optical layers.
Solution Approach 2:
The patent extracts and eliminates the adhesive material layer from the traditional polarizer integration structure. By directly forming the polarization layers on the display panel without adhesive intermediaries, the design removes unnecessary thickness-contributing elements while preserving the essential polarization functionality.
2Reliability
If a separate polarizer component is integrated with the display panel, then the polarization function is achieved, but flexibility is hindered
Solution Approach 1:
The patent combines the polarizer functionality directly into the display panel structure through deposited optical layers, creating a unified integrated component. This merging eliminates the need for separate polarizer films and adhesive layers that would restrict bending and flexibility, allowing the display to achieve ultra-thin and flexible form factors while maintaining polarization performance.
Solution Approach 2:
The patent employs thin film deposition techniques to create the phase retardation layer and linear polarization layer directly on the display panel, using thin film structures that are inherently more flexible and adaptable than traditional separate polarizer components. This approach enables the display to achieve flexible and wearable applications.
3Reliability
If multiple layers including bonding adhesive layers are used for integration, then the polarization module is properly assembled, but the manufacturing complexity increases
Solution Approach 1:
The patent merges multiple manufacturing steps into a single integrated process by directly forming the phase retardation layer and linear polarization layer on the display panel in sequence. This eliminates the need for separate assembly steps involving adhesive material application, alignment, and bonding, thereby reducing manufacturing complexity while ensuring proper assembly integrity through direct layer formation.
Solution Approach 2:
The patent performs preliminary formation of the polarization layers directly on the display panel during the manufacturing process, rather than assembling pre-formed separate components. This preliminary integration approach simplifies the overall manufacturing process by reducing the number of assembly steps and eliminating the need for adhesive materials, while ensuring proper layer alignment and integration.
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 reduces the overall thickness of the display device, enhancing flexibility and achieving ultra-thinness while simplifying the manufacturing process and improving product yield.
Implementation Method 1
a phase retardation layer and a linear polarization layer arranged in sequence along a direction away from the display panel
Implementation Method 2
a phase retardation layer and a linear polarization layer arranged in sequence along a direction away from the display panel
Data Source
AI summary
The present disclosure provides a display device and a manufacturing method thereof, falling within the field of display technology. The display device includes: a display panel; a polarization module located on a light-emitting side of the display panel, where the polarization module includes a phase retardation layer and a linear polarization layer arranged in sequence along a direction away from the display panel; the display panel is reused as a substrate of the polarization module, or a touch panel located between the display panel and the polarization module is reused as the substrate of the polarization module. The present disclosure can reduce the thickness of the display device.