Array Substrate Electrode Zoning for Full-Screen Sensor Integration
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Solution Overview
Problem
The existence of cantilevers in evaporation masks during the manufacturing process of display screens causes black stripes, affecting the display function and preventing a true full-screen implementation due to the need for functional areas and covered areas that cannot provide normal display.
Innovation Solution
The array substrate design includes a main display region, secondary display regions with thinner electrodes, and transition regions with varying electrode thicknesses to enhance light transmittance, allowing for normal display functions and accommodating photosensitive components like cameras or sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mask with shielding part connected via cantilever is used during evaporation, then the opening parts can be shielded, but the cantilever covers the normal display region causing black stripes
Solution Approach 1:
The mask is divided into multiple independent shielding parts, each capable of being positioned independently. This allows the shielding parts to cover opening parts without requiring cantilever connections that would interfere with the display region, thereby eliminating black stripes while maintaining shielding functionality.
Solution Approach 2:
A support structure is introduced as an intermediary between the shielding part and the mask frame. This support structure is designed to minimize interference with the display region, allowing the shielding part to be securely positioned without the need for cantilevers that extend into the display area and cause black stripes.
2Adaptability or versatility
If functional areas are reserved at the top of the screen for cameras and sensors, then these components can be installed, but the overall consistency of the screen is affected
Solution Approach 1:
The display screen employs different electrode thicknesses in different regions: the main display region has standard electrode thickness for normal display, while the secondary display region (top area for components) has thinner electrodes to increase light transmittance. This local differentiation allows cameras and sensors to be installed at the top while maintaining visual consistency across the entire screen.
Solution Approach 2:
The solution addresses the screen consistency problem by transitioning from a two-dimensional display surface to a three-dimensional electrode structure with varying thickness. The thinner electrodes in the secondary display region allow light to pass through more effectively, making the area with installed components visually indistinguishable from the main display region.
3Illumination intensity
If the first electrode thickness is reduced in secondary display region, then light transmittance is increased, but display luminance may be affected
Solution Approach 1:
The electrode structure is designed with spatially varying thickness: the main display region maintains standard electrode thickness to ensure sufficient luminance, while the secondary display region uses thinner electrodes to maximize light transmittance for component installation areas. This local quality differentiation resolves the contradiction between light transmittance and display luminance.
Data Source
AI summary
Provided are an array substrate, a display panel and a display apparatus. The array substrate includes a main display region, at least one secondary display region adjacent to the main display region, and a transition display region adjacent to the at least one secondary display region and the main display region.