AMOLED Display Panel With Shared Sub-Pixel Driving
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Solution Overview
Problem
The pixel density of active matrix organic light-emitting diode (AMOLED) display panels is difficult to improve due to the need for each sub-pixel unit to be electrically connected through driving wiring, limiting the number of sub-pixel driving circuits and wirings.
Innovation Solution
The display panel incorporates a novel arrangement where second sub-pixel units, lacking a sub-pixel driving circuit, are positioned between adjacent first sub-pixel units, sharing driving circuits and wirings, reducing the number of driving circuits and wirings while maintaining functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each sub-pixel unit includes a sub-pixel driving circuit and is electrically connected through driving wiring, then the display panel can be driven properly, but the pixel density is difficult to improve
Solution Approach 1:
The patent merges the driving circuit functionality by making second sub-pixel units share the driving circuits of adjacent first sub-pixel units. Specifically, the driving transistor and driving wiring of first sub-pixel units are used to drive both the first driving light-emitting units and the second driving light-emitting units, thereby reducing the total number of driving circuits and wirings while maintaining proper display functionality.
Solution Approach 2:
The driving circuits of first sub-pixel units are designed to serve multiple functions: they drive the first driving light-emitting units directly and also drive the second driving light-emitting units through electrical connection. This multi-functionality allows the same driving circuit to control multiple light-emitting units, reducing the overall number of driving circuits needed and enabling higher pixel density.
2Quantity of substance
If the number of driving circuits and wirings is reduced to improve pixel density, then pixel density increases, but the display quality and brightness transition may be affected
Solution Approach 1:
The patent applies local quality by making the brightness of second sub-pixel units transition between the brightness levels of adjacent first sub-pixel units. The second driving light-emitting units are electrically connected to the driving circuits of adjacent first sub-pixel units, allowing their brightness to be modulated locally based on the brightness levels of neighboring pixels, thereby maintaining display quality while reducing the number of driving circuits.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a plurality of driving wirings, a plurality of first sub-pixel units, and a plurality of second sub-pixel units. The plurality of driving wirings are configured to transmit data driving signals. Each of the plurality of first sub-pixel units includes a sub-pixel driving circuit and a first driving light-emitting unit, an input end of the sub-pixel driving circuit is electrically connected to a corresponding one of the plurality of driving wirings, and an output end of the sub-pixel driving circuit is electrically connected to a corresponding first driving light-emitting unit. In at least some of the plurality of first sub-pixel units, each of the plurality of second sub-pixel unit is disposed between adjacent first sub-pixel units. Each of the plurality of second sub-pixel units only includes a second driving light-emitting unit.