Display Pixel Circuit Wiring Multiplexing for Complexity Reduction
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Solution Overview
Problem
Display devices face challenges in achieving higher definition and reducing power consumption while incorporating touch panel and imaging functions, with existing technologies struggling to efficiently manage multiple functionalities and reduce wiring complexity.
Innovation Solution
A display device design incorporating a pixel circuit with multiple transistors, capacitors, and light-emitting elements, where the second wiring supplies both data and reset potentials in different periods, allowing for reduced wiring complexity and enhanced functionality, including touch panel and imaging capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate wirings are used for data potential and reset potential, then the control precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines the data potential wiring and reset potential wiring into a single shared wiring structure. The second wiring supplies both the data potential (during the data period) and the reset potential (during the reset period) to the second transistor, eliminating the need for separate wirings while maintaining precise control through time-multiplexed signal delivery.
Solution Approach 2:
The patent employs periodic action by dividing the operation into distinct time periods: a data period where the second wiring supplies the data potential, and a reset period where the same wiring supplies the reset potential. This time-multiplexed approach allows a single wiring to perform multiple functions sequentially, reducing wiring complexity while preserving control precision.
2Adaptability or versatility
If more wirings are added for touch panel and imaging functions, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent implements multi-functionality by designing the second wiring to serve multiple purposes: it supplies data potential to the second transistor during the data period, supplies reset potential during the reset period, and supports touch panel and imaging functions. This universal wiring structure reduces the need for dedicated wirings for each function, thereby reducing overall device complexity while enhancing adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables higher definition displays with reduced power consumption and simplified wiring, effectively integrating touch panel and imaging functions, thereby improving display quality and efficiency.
Implementation Method 1
Light-emitting elements utilizing electroluminescence (hereinafter referred to as EL elements)
Data Source
AI summary
A display device that can easily achieve higher definition is provided The display device includes a pixel, a first wiring, and a second wiring. The pixel includes first to fourth transistors, a first capacitor, and a light-emitting element. One of a source and a drain of the first transistor is connected to the first wiring, and the other of the source and the drain of the first transistor is connected to a gate of the second transistor and to the first capacitor. The light-emitting element is connected to one of a source and a drain of the second transistor. The first wiring is supplied with a first data potential. The second wiring is supplied with a second data potential and a reset potential in different periods. The third transistor supplies the second data potential to the first capacitor. The fourth transistor supplies the reset potential to the light-emitting element.