Array Substrate Layout With Multiplexed Anode Routing
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Solution Overview
Problem
The limited number of pixel light emitting units in the light-transmitting display area of display panels due to space occupation by anode leads restricts the screen-to-body ratio and display performance.
Innovation Solution
An array substrate design with a light-transmitting display area and a non-display area, where pixel anodes are in the light-transmitting area and driving circuits are outside, using multiplex distribution units connected by fewer leads that overlap with pixel anodes, allowing more pixel anodes to be driven with fewer leads exceeding the anode area, thereby increasing the number of pixel light emitting units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If anode leads are used to connect pixel anodes with driving circuits, then the pixel light emitting units can be driven, but the leads occupy space in the light-transmitting display area and limit the number of pixel light emitting units
Solution Approach 1:
The multiplex distribution unit integrates multiple signal distribution functions into a single component. Multiple pixel anodes share common leads through the multiplex distribution unit, which switches and distributes signals dynamically. This merging approach reduces the total number of leads required compared to dedicated one-to-one connections, thereby freeing up display area.
Solution Approach 2:
The multiplex distribution unit performs multiple functions: it acts as a signal distributor, a switch matrix, and a space-saving intermediary between pixel anodes and driving circuits. By making this component multi-functional, the patent eliminates the need for separate dedicated leads for each pixel, reducing overall lead count and occupied space.
2Illumination intensity
If driving circuits are arranged outside the light-transmitting display area, then the light-transmitting performance is ensured, but the connection leads must extend through the display area
Solution Approach 1:
The multiplex distribution unit serves as an intermediary component positioned within the display area that mediates between the pixel anodes and the driving circuits located outside the light-transmitting area. It receives signals from driving circuits through first leads and distributes them to multiple pixel anodes through second leads, reducing the need for long direct connections.
Solution Approach 2:
The patent transitions from a two-dimensional planar layout where each pixel requires its own lead path to a three-dimensional hierarchical structure. The multiplex distribution unit creates vertical signal distribution layers, allowing multiple pixels to share common lead paths in the horizontal dimension while maintaining individual connections through the vertical switching dimension.
3Measurement precision
If more pixel anodes are connected to driving circuits, then the display resolution improves, but the number of required leads increases
Solution Approach 1:
The multiplex distribution unit introduces dynamic signal routing capability. Instead of static one-to-one lead connections, the system dynamically switches and multiplexes signals to serve multiple pixel anodes. This dynamic approach allows the same physical leads to serve different pixels at different times, enabling higher resolution displays with fewer physical leads.
Solution Approach 2:
The multiplex distribution unit operates using periodic switching cycles, where signals are distributed to different groups of pixel anodes in alternating time periods. This periodic multiplexing allows the system to achieve high-resolution display capabilities by sequentially serving multiple pixels through shared leads, rather than requiring simultaneous dedicated connections for all pixels.
Data Source
AI summary
An array substrate, a display panel, and a display apparatus. The array substrate includes: pixel anodes located in the first display area and corresponding to a plurality of pixel light emitting units arranged in the first display area; driving circuits located in the second display area and configured to drive the pixel light emitting units to emit light; multiplex distribution units located in the first display area and arranged corresponding to a part of the pixel anodes, a projection of the multiplex distribution unit on the array substrate overlapping a projection of a corresponding one of the pixel anodes on the array substrate; first leads, the multiplex distribution unit being connected with the driving circuits through the first lead; and second leads, one multiplex distribution unit being electrically connected with N groups of the pixel anodes through N second leads.