Pixel Circuit Switch Extraction for Display Reliability
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Solution Overview
Problem
Current display panels face challenges in achieving high convenience and reliability due to complex pixel circuits and inefficient signal control, leading to suboptimal display performance and increased manufacturing complexity.
Innovation Solution
A display panel design incorporating a pixel circuit with a first switch, a node, a capacitor, and a second switch that dynamically controls the potential of the node, allowing for efficient signal management and improved display element operation, along with a driving portion that supplies selection signals to control the switches, simplifying the manufacturing process and reducing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex pixel circuit with multiple switches and capacitors is used to control display performance, then display performance and reliability are improved, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent extracts the second switch from the traditional pixel circuit configuration and places it in the signal line outside the pixel. This separation reduces the complexity within the pixel circuit itself while maintaining the reliability benefits of having multiple switching elements for precise potential control.
Solution Approach 2:
The patent moves the second switch to a different spatial dimension - from inside the pixel to the signal line outside the pixel array. This dimensional reorganization allows the pixel circuit to maintain simple structure while still achieving reliable display control through the external switch.
2Productivity
If multiple switches and capacitors are integrated within each pixel to enable dynamic potential control, then display performance and response time are improved, but manufacturing complexity and component count increase
Solution Approach 1:
The second switch is extracted from the pixel interior and positioned in the signal line outside the pixel array. This reduces the number of components that need to be manufactured and integrated within each pixel, simplifying the manufacturing process while preserving the dynamic potential control capability.
Solution Approach 2:
The external second switch serves multiple functions: it controls the signal line for multiple pixels simultaneously, enables dynamic potential control, and can be used for both display operation and rewriting phases. This multi-functionality reduces the need for separate dedicated components within each pixel.
3Reliability
If a traditional pixel circuit with first and second gates is used to maintain potential differences, then display reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the second switching function from the pixel circuit and implements it externally in the signal line. This eliminates the need for a second gate structure within each pixel while maintaining the ability to maintain potential differences through the external switch controlled by selection signals.
Data Source
AI summary
A novel display panel that is highly convenient or reliable is provided. A pixel circuit includes a first switch, a node, a first capacitor, a second capacitor, and a second switch. The first switch includes a first terminal to which a first signal is supplied and a second terminal electrically connected to the node. The first capacitor includes a first terminal electrically connected to the node. The second capacitor includes a first terminal electrically connected to the node and a second terminal electrically connected to the second switch. The second switch includes a first terminal to which a second signal is supplied and a second terminal electrically connected to the second terminal of the second capacitor. In addition, the second switch has a function of changing from a non-conducting state to a conducting state when the first switch is in a non-conducting state and a function of changing from a conducting state to a non-conducting state when the first switch is in a non-conducting state. The display element performs display on the basis of a potential of the node.