Single Scan Line for Display Panel Light Control
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Solution Overview
Problem
The high costs of scan lines and driving circuit design in display panels with light control functions, as they require separate scan lines for light control and display devices, leading to increased expenses and complexity.
Innovation Solution
Electrical connection of a single scan line to both the light control device and the display device, allowing them to operate simultaneously, with multiplexing electrodes functioning as common or touch electrodes during different time periods to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate scan lines are used for light control device and display device, then each device can be controlled independently, but the costs of lines and driving circuit design increase sharply
Solution Approach 1:
The patent combines the control of light control device and display device into a single scan line. The scan line sequentially controls both devices by timing their operation periods differently, merging what were previously two separate control paths into one, thereby reducing line count and driving circuit complexity while maintaining independent control capability through temporal separation
Solution Approach 2:
The scan line is designed to serve multiple functions: it acts as both the scan line for the light control device and the scan line for the display device. This multi-functional design allows a single scan line to replace what would traditionally require two separate scan lines, reducing overall system complexity while maintaining full control capability
2Reliability
If separate scan lines are adopted for light control and display devices, then each device operates independently, but manufacturing costs increase
Solution Approach 1:
By merging the scan line resources for light control and display devices into a single shared scan line, the patent reduces the total number of scan lines required. This reduction directly lowers manufacturing costs associated with line fabrication and driving circuit implementation, while independent operation is preserved through temporal separation of control signals
3Productivity
If multiple scan lines are used for light control and display, then simultaneous operation is possible, but line costs and circuit design costs increase
Solution Approach 1:
The patent implements periodic action by dividing the scan line operation into distinct time periods: a first time period for controlling the light control device and a second time period for controlling the display device. This periodic temporal separation allows both devices to operate effectively with a single scan line, achieving simultaneous operation capability without requiring multiple physical scan lines
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
This approach reduces the costs of scan lines and driving circuit design while improving the refresh and reporting rates of the display panel by eliminating the need for additional scan lines and simplifying the manufacturing process.
Implementation Method 1
the light control device comprises a photosensitive thin film transistor
Data Source
AI summary
The present disclosure provides a display panel and a driving method thereof. The display panel includes a substrate and a scan line, a light control device, and a display device on the substrate. The scan line is electrically connected to the light control device and the display panel, so that the light control device and the display device operate simultaneously.