Light Blocking Layer for Display Edge Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices, particularly OLED devices, face exposure issues of internal layers due to oblique external light transmission, leading to exposure of dummy emission layers and other components at the edges of the window, compromising protection and functionality.
Innovation Solution
A display device design incorporating a substrate with distinct regions, where a light blocking layer is applied to the side surfaces of the polarizer, touch panel, and window, as well as the top surface of the dummy emission layer on the outer periphery region, to prevent external light from exposing internal components. This design includes a manufacturing method involving the formation of an emission layer, polarizer, touch panel, and window, followed by the application of a light blocking layer to cover these areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the window is made transparent to allow light transmission, then the display device achieves good visual display quality, but internal layers such as the dummy emission layer become exposed to external light from the sides
Solution Approach 1:
The patent divides the protective structure into multiple segments: a first light blocking layer applied to the side surface of the window, a second light blocking layer applied to the outer peripheral surface of the emission layer, and a third light blocking layer applied to the inner peripheral surface of the touch panel. This segmented approach allows each layer to specifically block light from different directions, preventing exposure of internal layers while maintaining the transparency and light transmission quality of the window.
2Object-affected harmful factors
If a light blocking layer is added to prevent exposure of internal layers, then protection against external light is improved, but the device structure becomes more complex
Solution Approach 1:
The patent merges the light blocking function with the existing structural components of the display device. The first light blocking layer is integrated with the side surface of the window, the second light blocking layer is combined with the outer peripheral surface of the emission layer, and the third light blocking layer is merged with the inner peripheral surface of the touch panel. This integration allows the light blocking function to be achieved without adding separate, complex protective structures.
Solution Approach 2:
The light blocking layers serve multiple functions: they block external light from exposing internal layers, provides structural reinforcement to the device edges, and maintain the overall integrity of the stacked components. This multi-functionality reduces the need for additional specialized protective components, thereby simplifying the overall device 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
Effectively prevents exposure of internal layers to external light, enhancing protection and maintaining the integrity of the display device by blocking oblique light transmission and ensuring the dummy emission layer remains concealed.
Implementation Method 1
a light blocking layer covering side surfaces of the polarizer and the touch panel, and covering a top surface of a portion of the emission layer disposed on the second region of the substrate
Data Source
AI summary
A display device including: a substrate configured to include a first region and a second region formed at an outer periphery of the first region; an emission layer disposed on the first region and the second region of the substrate; a polarizer disposed on the emission layer; a touch panel disposed on the polarizer; a window disposed on the touch panel; and a light blocking layer covering side surfaces of the polarizer and the touch panel and a top surface of the emission layer disposed on the second region of the substrate. The polarizer and the touch panel cover the first region of the substrate and expose the second region of the substrate.