Display-Sensing Circuit With Shared Lines for Higher Pixel Aperture
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Solution Overview
Problem
Conventional electronic devices with both displaying and sensing functions face a reduction in pixel aperture ratio due to the need for increased signal lines or traces in the display region, affecting display quality.
Innovation Solution
The electronic device integrates a first diode, first transistor, second transistor, second diode, third transistor, fourth transistor, first signal line, and power line, with the power line disposed between the semiconductors of the first and third transistors, reducing the number of power and signal lines by sharing them between sensing and pixel circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing circuits are disposed in the display region, then sensing function is achieved, but pixel aperture ratio is significantly reduced
Solution Approach 1:
The patent moves the sensing circuit from the display region (2D plane) to the peripheral region, utilizing spatial reorganization. The sensing circuit is disposed in a peripheral region adjacent to the display region, allowing the display region to maintain high aperture ratio while the peripheral region houses the sensing functionality.
Solution Approach 2:
The device is divided into distinct functional regions: a display region for pixel circuits and a peripheral region for sensing circuits. This segmentation allows each region to be optimized independently, with the display region maximizing aperture ratio and the peripheral region accommodating sensing components.
2Measurement precision
If the number of signal lines is increased to control optical sensors, then sensing capability is improved, but pixel aperture ratio is reduced
Solution Approach 1:
The patent combines multiple signal lines into shared signal lines that serve both pixel circuits and sensing circuits. The first and second signal lines are shared between the pixel circuit and sensing circuit, reducing the total number of signal lines required and minimizing the impact on pixel aperture ratio.
Solution Approach 2:
The signal lines are designed to perform multiple functions: they control both the pixel circuits in the display region and the sensing circuits in the peripheral region. This multi-functionality reduces the overall signal line count while maintaining full sensing capability.
Data Source
AI summary
An electronic device including a first diode, a first transistor, a second transistor, a second diode, a third transistor, a fourth transistor, a first signal line, and a power line is provided. The first transistor is coupled to the first diode and includes a semiconductor. The second transistor is coupled to the first transistor. The third transistor is coupled to the second diode and includes a semiconductor. The fourth transistor is coupled to the third transistor. The first signal line is coupled to the second transistor and the fourth transistor. The power line is coupled to the first transistor and the third transistor, wherein the power line is disposed between the semiconductor of the first transistor and the semiconductor of the third transistor.