Chromic Protective Layer for Display Light Blocking and Impact Resistance
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Solution Overview
Problem
Existing display devices lack effective protection against external impacts and light leakage, with traditional solutions often increasing device thickness and weight due to the use of light-shielding sheets and complex protective structures.
Innovation Solution
A display device incorporating a protective layer with chromic materials, such as photochromic, thermochromic, or electrochromic materials, and a latent pigment with a phase change material, which changes color or phase in response to light, heat, or current, providing both impact protection and light shielding without the need for a light-shielding sheet, combined with a flexible printed circuit board and a method of manufacturing that includes screen printing and UV curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional protective structures and light-shielding sheets are used, then protection against external impacts and light leakage is improved, but device thickness and weight increase
Solution Approach 1:
The patent combines the protective layer and light-shielding function into a single integrated structure. The protective layer includes a lower layer and an upper layer with light-shielding particles, merging mechanical protection and light blocking functions that were previously separate components, thereby reducing overall device weight while maintaining both protective functions
Solution Approach 2:
The protective layer uses composite material structure with light-shielding particles dispersed in a transparent resin matrix. This composite approach allows the material to simultaneously provide mechanical strength for impact protection and optical properties for light leakage prevention, eliminating the need for separate light-shielding sheets
2Reliability
If traditional protective structures and light-shielding sheets are used, then protection against external impacts and light leakage is improved, but device thickness increases
Solution Approach 1:
The patent combines the protective layer and light-shielding function into a single integrated structure. The protective layer includes a lower layer and an upper layer with light-shielding particles, merging mechanical protection and light blocking functions that were previously separate components, thereby reducing overall device thickness while maintaining both protective functions
Solution Approach 2:
The protective layer is designed as a thin film structure with specific layer configurations. The lower layer and upper layer are formulated to provide adequate protection while maintaining thin profile, eliminating the need for thick separate protective components and light-shielding sheets
3Reliability
If chromic materials and latent pigments are integrated into the protective layer, then protective functions are improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs chromic materials that change optical properties in response to external stimuli (light, heat, electricity) and latent pigments with phase change capabilities. These parameter-based solutions provide adaptive protective functions without requiring complex active control systems, maintaining manufacturing simplicity while enhancing protective performance
Solution Approach 2:
The chromic materials and latent pigments provide automatic response to environmental conditions without external control. The materials self-adjust their properties (color, phase) in response to stimuli, eliminating the need for complex control systems and sensors, thereby reducing manufacturing complexity while improving protective functions
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 enhances the display device's robustness against external impacts, improves heat dissipation, and reduces thickness and weight by integrating protective functions within the chromic material layer, while ensuring effective light blocking and mechanical stability.
Implementation Method 1
The chromic material may be a photochromic material that is discolored in response to light being applied thereto
Implementation Method 2
The latent pigment may include a phase change material and a polymer surrounding the phase change material
Implementation Method 3
The chromic material may be a thermochromic material that is discolored at a temperature within a predetermined temperature range
Implementation Method 4
The chromic material may be an electrochromic material that is discolored in response to a current with a predetermined level being applied thereto
Implementation Method 5
Coupling the second substrate and the cover window together may include applying ultraviolet (UV) light to an adhesive layer, which is interposed between the second substrate and the cover window
Data Source
AI summary
A display device, including a display panel displaying an image; a cover receiving the display panel therein; and a protective layer between the display panel and the cover and including a chromic material.