Display Panel Light-Blocking and Polarizing Layers for External Light
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Solution Overview
Problem
External light passing through the back surface of a display device deteriorates the image quality displayed on the front surface.
Innovation Solution
A display device design incorporating a light-blocking film layer and a polarizing layer, where the upper surface of the light-blocking film layer directly contacts the lower surface of the display panel, and the polarizing layer's lower surface matches the display panel's upper surface, effectively blocking external light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional display panel structure is used, then the device is simple and easy to manufacture, but external light passes through the back surface and deteriorates image quality
Solution Approach 1:
The light-blocking function is segmented into multiple layers: a first light-blocking film layer directly on the back surface of the display panel, and a second light-blocking film layer on the front surface. This segmentation allows each layer to address specific aspects of light blocking, effectively preventing external light from reaching the display area while maintaining manufacturing feasibility through standardized layering processes.
Solution Approach 2:
The solution extends light-blocking protection to both the front and back surfaces of the display panel, adding dimensional coverage. By placing light-blocking film layers on opposite surfaces (front and back), the patent creates a three-dimensional light-blocking architecture that comprehensively prevents external light interference without significantly increasing manufacturing complexity.
2Object-affected harmful factors
If the light-blocking film layer area is increased to cover more surface, then external light blocking is improved, but the amount of material and manufacturing complexity increases
Solution Approach 1:
The light-blocking film layers are strategically positioned to cover only the necessary areas: the first light-blocking film layer is applied to the back surface in regions where external light would otherwise penetrate to the display area, and the second light-blocking film layer is applied to the front surface in corresponding regions. This localized application ensures effective light blocking while minimizing material consumption by avoiding unnecessary coverage of areas already protected by the display panel structure.
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
Enhances display quality by preventing external light from being recognized, thereby improving the visibility of the displayed image.
Implementation Method 1
a light-blocking film layer disposed under the display panel... effectively blocking external light
Implementation Method 2
a polarizing layer disposed on the display panel... enhancing display quality by preventing external light from being recognized
Data Source
AI summary
A display device includes a display panel including a display area in which a plurality of pixels is disposed and a bending area bent from the display area, a polarizing layer disposed on the display panel and a light-blocking film layer disposed under the display panel, where an entirety of an upper surface of the light-blocking film layer directly contacts a lower surface of the display panel in the display area, and an area of a lower surface of the light-blocking film layer is smaller than an area of the upper surface of the light-blocking film layer.