Bezel-less Display Module with Shielded Bonding Section
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Solution Overview
Problem
Existing display devices with high screen-to-body ratios cannot achieve a four-sided bezel-less design due to the presence of bonding areas and stepped sub-areas, which require bezels for protection, obstructing the aesthetic and visual experience.
Innovation Solution
A display module design that includes a display panel with a first substrate and a second substrate, a liquid crystal layer, and a polarizer with an extension section and a black shielding layer. The black shielding layer covers the bonding section in the stepped sub-area, eliminating the need for a bezel and achieving a bezel-less design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bonding area and stepped sub-area are provided on the display panel, then the bonding section can be located and secured, but a bezel must be added to cover the stepped sub-area, preventing four-sided bezel-less design
Solution Approach 1:
The polarizer is extended into the stepped sub-area along the thickness dimension, and a black shielding layer is added to cover the bonding section from the light-exiting side. This dimensional approach allows the bonding section to remain functional while being visually concealed, eliminating the need for a front bezel and achieving four-sided bezel-less design.
2Reliability
If a bezel is added to cover the stepped sub-area, then the bonding section is protected, but the screen-to-body ratio decreases and visual experience is reduced
Solution Approach 1:
The black shielding layer acts as an intermediary element that visually conceals the bonding section and stepped sub-area from the front, while the polarizer extension provides structural support. This allows the bonding section to be protected without adding a front bezel, maintaining the screen-to-body ratio and achieving four-sided bezel-less design.
3Shape
If the polarizer is extended into the stepped sub-area, then the bonding section can be covered, but the polarizer structure becomes more complex
Solution Approach 1:
The polarizer is segmented into a display area portion and an extension section. The extension section specifically covers the stepped sub-area, while the display area portion maintains normal structure. This segmentation allows the polarizer to fulfill both display and concealment functions without requiring complete structural redesign.
Data Source
AI summary
The present application discloses a display module, a manufacturing method thereof, and a display device. The display module includes a display panel and a polarizer, and the display panel includes a first substrate, a second substrate, and a liquid crystal layer; wherein the first substrate includes a bonding section located in a stepped sub-area of the display module, a black shielding layer is provided on one side of the extension section of the polarizer, and an orthographic projection of the black shielding layer on the first substrate at least covers the bonding section.