Display Substrate Segmentation for Transparent AMOLED Spot Reduction
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Solution Overview
Problem
Transparent display apparatuses using AMOLED technology face issues with dark or bright spots due to thin film transistor failures, which degrade display quality, and the limited space in the display region for pixel driving circuits complicates circuit wiring.
Innovation Solution
A display substrate design with a base substrate and display units that include a display region and non-light-emitting regions, featuring a connection structure and transfer electrodes across layers, allowing for efficient electrical connections and minimizing the risk of short circuits through strategic cuttable portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the pixel driving circuit is placed in the display region to achieve image display, then the light-emitting function is improved, but the circuit wiring complexity increases and short circuit risk rises
Solution Approach 1:
The display panel is divided into display region and non-light-emitting region, with the pixel driving circuit placed in the non-light-emitting region. This segmentation separates the light-emitting function from the circuit wiring, allowing the electrode to extend from the non-light-emitting region into the display region to connect with the light-emitting element, thereby reducing circuit wiring complexity while maintaining light-emitting function.
2Adaptability or versatility
If the pixel driving circuit is placed in the display region, then the display functionality is maintained, but the occurrence of dark or bright spots increases due to thin film transistor failures
Solution Approach 1:
The pixel driving circuit is extracted from the display region and placed in the non-light-emitting region. This extraction removes the potential failure sources (thin film transistors) from the display region, thereby reducing the occurrence of dark or bright spots while maintaining display functionality through the extended electrode connection.
3Measurement precision
If the electrode is divided into spaced apart portions in the display region, then the transparency is improved, but the electrical connection reliability deteriorates
Solution Approach 1:
The non-light-emitting region serves as an intermediary space that houses the connection structure between the electrode portions. The electrode extends from the non-light-emitting region into the display region to connect with the light-emitting element, providing a reliable electrical connection path while maintaining transparency in the display region through the spaced apart portions.
Data Source
AI summary
A display substrate, a method for operating the same, and a display device are provided. The display substrate includes a base substrate and a display unit. In the sub-pixel of the display substrate, the light emitting device includes a first electrode including a first portion and a second portion spaced apart from each other; the display unit further includes a connection structure and a first transfer electrode, the connection structure is electrically connected with the first portion of the first electrode and the second portion of the first electrode, and includes a connection portion located in the non-light-emitting region; the first transfer electrode is electrically connected with the first pole of the driving transistor and includes a portion located in the non-light-emitting region, and the connection portion is electrically connected with the portion of the first transfer electrode located in the non-light-emitting region.