Display Window With Light Shielding Layer To Block Polarizer Edge Visibility
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Solution Overview
Problem
Display devices with polarizers suffer from visibility issues due to ambient light reflection, particularly at the boundary portions of the polarizer, which affects image clarity and user experience.
Innovation Solution
A window design for display devices featuring a light transmissive base with a light shielding layer and protrusions on the surface facing the polarizer, which extends towards and is spaced from the polarizer to prevent visibility of the polarizer's end portion, improving visual ratings by reducing ambient light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarizer is attached to the display panel to reduce ambient light reflection, then the contrast ratio is improved, but the end portion of the polarizer becomes visible which deteriorates the visual appearance
Solution Approach 1:
A light shielding layer is introduced as an intermediary element between the polarizer and the window. This layer extends beyond the polarizer's boundary and includes a light shielding pattern that selectively blocks light paths to the polarizer's end portion, thereby preventing its visibility without interfering with the polarizer's primary function of reducing ambient light reflection
Solution Approach 2:
The light shielding layer is segmented into different regions: a first light shielding layer that contacts the polarizer and a second light shielding layer that extends further outward. This segmentation allows different portions of the light shielding structure to perform different functions - one for direct contact and light blocking, and another for extending the shielding effect to prevent visibility of the polarizer edges
2Device complexity
If the light shielding layer extends close to the polarizer to prevent visibility, then the visual appearance is improved, but the adhesion between window and display panel may be compromised
Solution Approach 1:
The light shielding layer exhibits local quality variations through its segmented structure. The first light shielding layer has properties optimized for light blocking and contact with the polarizer, while the second light shielding layer extends outward with properties that maintain structural integrity and adhesion. This local differentiation allows the structure to simultaneously achieve visibility prevention and adhesion maintenance
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 window design effectively reduces or prevents the visibility of the polarizer's end portion, enhancing the display device's visual performance and user experience by minimizing ambient light reflection and maintaining luminance.
Implementation Method 1
a light shielding layer on the window base... visibility of an end portion of a polarizer attached to a display panel may be reduced or prevented
Data Source
AI summary
A display device includes a display panel, a polarizer on the display panel, an adhesion layer on the polarizer, and a window on the adhesion layer, the window including a light transmissive window base, a light shielding layer on the window base and a protrusion on the light shielding layer.