Display Panel Light Blocking Layer Segmentation for Transmission Area Integration
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Solution Overview
Problem
As display panels become larger and thinner, integrating multiple electronic functions into the display panel while maintaining image quality and resolution is a challenge, particularly in ensuring that transmission areas do not degrade the performance of adjacent emission areas.
Innovation Solution
The display panel incorporates a design with emission areas in a first and second display area, where the second area is partially surrounded by the first, and includes a transmission area between adjacent emission areas. This design features an encapsulation layer, an input sensing layer with touch electrodes, and a reflection prevention layer with a light blocking layer and color filters, ensuring optimal light management and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transmission areas are added between adjacent emission areas to enable multiple electronic functions, then device functionality is improved, but light transmission quality and image quality of adjacent emission areas deteriorate
Solution Approach 1:
The light blocking layer is divided into multiple opening portions, each corresponding to different emission areas. The transmission area is positioned between these opening portions, allowing selective light transmission only in specific regions while blocking light in other areas. This segmentation enables the transmission area to function independently without degrading the light transmission quality of adjacent emission areas.
Solution Approach 2:
Different regions of the light blocking layer have different properties: some regions have opening portions that allow light transmission for emission areas, while other regions block light for the transmission area. This local differentiation of light blocking and transmission properties allows the same layer to simultaneously support both emission area functionality and transmission area functionality without mutual interference.
2Area of stationary object
If display panel size is increased to provide larger screen area, then display area is improved, but manufacturing complexity and integration difficulty worsen
Solution Approach 1:
The transmission area is nested within the second display area, which itself is surrounded by the first display area. This nested arrangement allows multiple functional zones to be integrated within a single display panel structure, enabling larger overall display area while managing complexity through hierarchical organization of functional regions.
Solution Approach 2:
The light blocking layer serves multiple functions: it blocks light for emission areas, allows light transmission for the transmission area, and can be integrated with touch electrodes and color filters. This multi-functionality reduces the need for separate components, thereby reducing manufacturing complexity despite the increased display area and integrated functionality.
3Adaptability or versatility
If multiple electronic functions are integrated into the display panel, then device versatility is improved, but image quality and resolution worsen
Solution Approach 1:
The light blocking layer is segmented into multiple opening portions, each precisely positioned to correspond with specific emission areas. This precise segmentation allows the transmission area to be clearly defined while maintaining sharp boundaries that preserve image quality and resolution in the emission areas, even with multiple electronic functions integrated.
Solution Approach 2:
The light blocking layer acts as an intermediary between the emission areas and the transmission area. It selectively blocks light from reaching the transmission area while allowing light to pass through to the emission areas, thereby mediating the interaction between different functional zones and preventing degradation of image quality despite functional integration.
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
This design allows for the integration of multiple electronic functions within the display panel without compromising image quality or resolution, effectively managing light transmission and reflection to enhance display performance.
Implementation Method 1
The light blocking layer includes a plurality of opening portions overlapping the plurality of emission areas
Implementation Method 2
a reflection prevention layer disposed on the input sensing layer and including a light blocking layer and a plurality of color filters
Data Source
AI summary
A display panel includes a plurality of emission areas disposed in a first display area and a second display area at least partially surrounded by the first display area. A transmission area is disposed between two adjacent emission areas in the second display area. An encapsulation layer is disposed on the emission areas. An input sensing layer is disposed on the encapsulation layer and includes touch electrodes. A reflection prevention layer is disposed on the input sensing layer and includes a light blocking layer and a plurality of color filters. The light blocking layer has a plurality of opening portions overlapping the emission areas. The plurality of color filters overlaps the emission areas. Each touch electrode includes a conductive mesh pattern having a plurality of mesh holes, and a particular emission area in the second display area and the transmission area are disposed in a same mesh hole.