Polarizing Plate Base Film for Seamless Display Bezel Reduction
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Solution Overview
Problem
Existing display devices face challenges in reducing the bezel size, particularly due to the difficulty in integrating gate driver ICs and case members, which obstruct the seamless connection of the front surface and sides, leading to visible bezels and potential damage or light leakage from polarizing plates.
Innovation Solution
The use of a polarizing plate with a base film that connects the display panel's front surface to the case member, where the base film is stretched and designed to extend beyond the polarizer, reducing the bezel size by attaching to both surfaces of the polarizer and guiding the polarizing plate's extension to prevent damage and light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If case members are installed at the edge of the display panel to wrap and protect it, then the structural integrity and protection are improved, but the bezel size increases and the seamless connection between front surface and sides is obstructed
Solution Approach 1:
The patent merges the case member and polarizing plate into a single integrated component. The polarizing plate is extended to wrap around the side of the display panel and is directly attached to the case member, eliminating the need for separate case members at the edges. This integration reduces the overall bezel size while maintaining structural integrity through the unified design.
Solution Approach 2:
The polarizing plate serves multiple functions: it provides optical polarization for the display, extends to the side edges to replace the traditional case member wrapping function, and creates a seamless transition between front and side surfaces. This multi-functionality allows the polarizing plate to both protect the panel edges and reduce bezel visibility.
2Length of moving object
If the polarizing plate is extended to connect the front surface and sides seamlessly, then the bezel size is reduced and design continuity is improved, but the polarizing plate may be damaged or cause light leakage
Solution Approach 1:
The patent introduces an intermediary adhesive layer between the extended polarizing plate and the case member/display panel. This adhesive mediator allows the polarizing plate to be securely attached at the edges without direct stress concentration that would cause damage or light leakage, while maintaining the seamless visual connection.
Solution Approach 2:
The design anticipates potential damage to the extended polarizing plate by providing protective attachment to the case member through the adhesive layer. This beforehand cushioning prevents edge damage and light leakage by ensuring secure, stress-distributed attachment before any potential failure occurs.
3Length of moving object
If the polarizing plate is stretched to extend beyond the polarizer area, then the connection between front surface and sides is achieved, but the manufacturing complexity and precision requirements increase
Solution Approach 1:
The patent segments the polarizing plate into distinct functional zones: the polarizer region for optical function, the base film region for structural support, and the extended wrapping region for connection. This segmentation allows each zone to be manufactured and attached with appropriate precision requirements, reducing overall manufacturing complexity.
Solution Approach 2:
The patent changes the physical parameters of the polarizing plate by stretching the base film to extend it beyond the polarizer area. This parameter change allows the plate to reach the side edges for seamless connection while maintaining the optical properties of the polarizer region. The stretching is controlled to achieve the required extension without compromising manufacturing feasibility.
Data Source
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AI summary
A display device, of which a front surface and sides are connected to each other using the same material, is disclosed. The display device includes a display panel (100), a case member (200) wrapping the side of the display panel (100), and a polarizing plate (110), which is attached to a front surface of the display panel (100) and connects the display panel (100) with the case member(200). The polarizing plate (110) includes a polarizer (111) defined at the front surface of the display panel (100) and a base film (112), which is attached to the polarizer (111) and connects the front surface of the display panel (100) with the case member (200).