Bendable Display Layer Structure for UV-Safe Laser Cutting
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Solution Overview
Problem
Existing display apparatus manufacturing processes are prone to damage during the production of bendable displays, particularly due to laser cutting processes that can harm internal components.
Innovation Solution
Incorporating a light-absorbing layer between the upper protective and bending protective layers in the display panel, composed of carbon black particles with a diameter of 150 nanometers or less, to absorb UV wavelengths and minimize damage from laser cutting, along with a structured cover layer formed by laser cutting to overlap with the light-absorbing layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser cutting process is used to form the cover layer, then precise cutting and manufacturing efficiency are improved, but internal components may be damaged by UV light transmission
Solution Approach 1:
A light-absorbing layer is introduced as an intermediary component between the laser cutting source and the internal components of the display apparatus. This layer absorbs UV light during the laser cutting process, preventing the harmful radiation from reaching and damaging internal components while allowing the laser cutting process to proceed efficiently.
Solution Approach 2:
The patent converts the harmful UV light radiation from the laser cutting process into a beneficial effect by using light-absorbing materials that convert the UV energy into heat, which is then dissipated safely. The light-absorbing layer transforms the harmful UV radiation into a controlled thermal effect that protects internal components rather than damaging them.
2Object-affected harmful factors
If the light-absorbing layer is made thicker to absorb more UV light, then protection of internal components is improved, but the overall device thickness and complexity increase
Solution Approach 1:
The patent optimizes the thickness parameter of the light-absorbing layer to achieve the minimum required protection level. By carefully selecting and adjusting the thickness parameter, the design achieves adequate UV absorption while minimizing the increase in overall device thickness and structural complexity.
Solution Approach 2:
The light-absorbing layer is integrated into the existing multi-layer structure of the display apparatus as a composite material component. This integration allows the protective function to be achieved without significantly increasing device complexity, as the light-absorbing layer becomes part of the overall layered architecture rather than a separate additive component.
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 solution effectively reduces damage to internal components by absorbing UV light, ensuring the integrity and functionality of the display apparatus, particularly in bendable areas, while allowing precise laser cutting.
Implementation Method 1
a light-absorbing layer disposed on the display panel between the upper protective layer and the bending protective layer, overlapping with one edge of the cover layer in a plan view, and including a plurality of light-absorbing agents
Data Source
AI summary
A display apparatus in which damage during the manufacturing process is minimized includes a display panel divided into a display area, where an image is displayed, and a peripheral area surrounding the display area, wherein the peripheral area includes a bending area bendable around a bending axis, an upper protective layer disposed on the display panel in the display area, a cover layer disposed on the upper protective layer and overlapping with the display area in a plan view, a bending protective layer disposed on the display panel in the bending area and a light-absorbing layer disposed on the display panel between the upper protective layer and the bending protective layer, overlapping with one edge of the cover layer in a plan view, and including a plurality of light-absorbing agents.