Compensation Layer Display Structure for Under-Panel Components
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Solution Overview
Problem
There is a need for a display apparatus that can expand its display area to accommodate components such as sensors and cameras while maintaining image display capabilities, particularly in areas where traditional display structures are limited.
Innovation Solution
The display apparatus features a substrate with a first area for component placement and a second area for image display, including a pixel circuit unit, pixel electrodes, and a metal pattern layer. The metal pattern layer is arranged between the substrate and the pixel electrodes, with a constant voltage applied, and includes slit patterns to enhance light transmittance and surface planarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components such as sensors or cameras are arranged inside the display area, then the functionality of the display apparatus is enhanced, but the display area is reduced
Solution Approach 1:
The display area is segmented into a first area for component arrangement and a second area for image display. The pixel electrode is divided into a first portion overlapping the pixel circuit unit and a second portion not overlapping the pixel circuit unit, allowing independent optimization of each region for its specific function.
Solution Approach 2:
The patent utilizes the vertical dimension by arranging the metal pattern layer between the substrate and the pixel electrode, creating a multi-layer structure. This allows components to be arranged in the first area while maintaining display functionality in the second area, effectively expanding the display area without compromising functionality.
2Ease of manufacture
If the pixel electrode completely overlaps the pixel circuit unit, then the manufacturing process is simplified, but the light transmittance is reduced
Solution Approach 1:
The pixel electrode is designed with different portions having different functions: the first portion overlaps the pixel circuit unit for electrical connection, while the second portion does not overlap to maximize light transmittance. This local differentiation allows each part to optimize its specific function without compromising the other.
Solution Approach 2:
The pixel electrode is segmented into multiple portions with different overlapping characteristics relative to the pixel circuit unit. This segmentation enables the electrode to simultaneously achieve good electrical connection in some areas and high light transmittance in other areas.
3Manufacturing precision
If the metal pattern layer is added to improve surface planarity, then the manufacturing precision is improved, but the device complexity is increased
Solution Approach 1:
The metal pattern layer serves multiple functions simultaneously: it improves surface planarity for better manufacturing precision, enhances light transmittance through its slit pattern design, and provides electrical connection. This multi-functionality reduces the need for additional separate components, thereby not significantly increasing device complexity.
Solution Approach 2:
The patent merges the functions of surface planarization, light transmittance enhancement, and electrical connection into a single metal pattern layer. By combining these functions, the overall device complexity is minimized while achieving multiple performance improvements.
Data Source
AI summary
A display apparatus in which a display area is expanded so that an image may be displayed even in an area where components are arranged is provided. The display apparatus includes a substrate including a first area in which a transmissive portion is located and a second area adjacent to the first area, a pixel circuit unit arranged in the first area and including a pixel circuit, a first pixel electrode arranged in the first area and electrically connected to the pixel circuit, the first pixel electrode having a first portion overlapping the pixel circuit unit and a second portion not overlapping the pixel circuit unit, and a metal pattern layer arranged between the substrate and the first pixel electrode and corresponding to the second portion.