Display Apparatus Driver Circuit Integration
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Solution Overview
Problem
Conventional display apparatuses have a significant non-display area, which limits their flexibility and robustness to external impacts due to the arrangement of driver circuits and power supply lines, resulting in a larger dead space and reduced pixel density.
Innovation Solution
The display apparatus is designed with a substrate that includes defined display areas and a non-display area, featuring inorganic and organic insulating layers with trenches along circuit boundaries, and driver circuits arranged within the display area, reducing the dead space and enhancing flexibility and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If driver circuits and power supply lines are arranged in a separate non-display area, then circuit functionality is ensured, but the non-display area increases and pixel density decreases
Solution Approach 1:
The patent merges the driver circuits and power supply lines with the display area by arranging them in an integrated layout where circuit regions overlap with display regions. This allows the non-display area to be minimized or eliminated while maintaining both display functionality and circuit operation, thereby increasing pixel density without sacrificing circuit performance.
Solution Approach 2:
The patent utilizes multi-layer structures and three-dimensional arrangement of circuits and display elements. By stacking circuit layers above or below display layers, the design accommodates driver circuits and power supply lines within the vertical dimension rather than requiring additional horizontal non-display area, thus increasing effective pixel density.
2Ease of manufacture
If a large non-display area is used for circuit arrangement, then circuit layout is simplified, but flexibility and robustness to external impacts decrease
Solution Approach 1:
The patent employs flexible substrate structures and thin-film circuit arrangements that can bend and deform without breaking. The integrated layout with reduced non-display area creates a more uniform structure that distributes mechanical stress evenly, enhancing flexibility and robustness against external impacts while maintaining manufacturability through standardized thin-film fabrication processes.
3Area of stationary object
If driver circuits are arranged in the display area, then non-display area is reduced, but circuit interference with display elements may increase
Solution Approach 1:
The patent segments the display area into distinct regions: display element regions, circuit regions, and buffer regions. By spatially separating display elements from driver circuits and power supply lines while allowing controlled overlap, the design minimizes electromagnetic interference and signal crosstalk. The buffer regions act as isolation zones that prevent harmful interactions while maintaining the reduced non-display area configuration.
Data Source
AI summary
A display apparatus includes a substrate in which a first display area, a second display area located on an outer side of the first display area, a third display area located on an outer side of the second display area, and a non-display area are defined, first pixel circuits located in the first display area and arranged in a first direction, second pixel circuits and third pixel circuits which are located in the second display area and arranged in the first direction, driver circuits located in the third display area and arranged in the first direction, an inorganic insulating layer provided with trenches defined along a boundary between two adjacent driver circuits among the driver circuits, and an organic insulating layer disposed on the inorganic insulating layer, where at least a portion of the organic insulating layer is filled in the trenches.