Active Device Substrate Shared Data Line Architecture
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Solution Overview
Problem
Current display panel technologies for augmented and virtual reality applications suffer from insufficient screen resolution, hindering the development and immersion of these technologies in various fields.
Innovation Solution
An active device substrate is designed with a substrate, scan lines, data lines, first and second active devices, and pixel electrodes, where the first and second semiconductor channel layers are connected to allow both active devices to be driven by the same data line, reducing the number of data lines and enhancing the aperture ratio and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each active device is connected to a separate data line, then each device can be independently controlled, but the number of data lines increases, reducing the aperture ratio and resolution
Solution Approach 1:
The patent merges the control of multiple active devices into a single data line by implementing a shared data line architecture. The first and second active devices share a common data line, allowing both devices to be controlled through the same signal path. This merging approach reduces the total number of data lines required, thereby increasing the aperture ratio without sacrificing the ability to independently control each active device through selective gating mechanisms.
2Ease of operation
If each active device is connected to a separate data line, then device control is simplified, but the design space is reduced and resolution is limited
Solution Approach 1:
The patent combines multiple data lines into a shared data line structure where the first and second active devices share a common data line. This merging reduces the overall complexity of the data line network while maintaining simplified device control through the use of scan lines and gate structures that enable selective addressing of each active device despite sharing the data line.
Solution Approach 2:
The patent segments the control function into separate scan lines for row selection and a shared data line for column data transmission. By dividing the control mechanism into segmented scan lines that can independently address different rows of active devices, the system maintains ease of control while reducing the total number of data lines required, thus improving resolution and design space.
3Manufacturing precision
If more data lines are used, then each pixel can be addressed individually, but the aperture ratio and design space are reduced
Solution Approach 1:
The patent segments the addressing mechanism into two independent dimensions: scan lines for row selection and a shared data line for column data. This segmentation allows individual pixel addressing through the combination of row and column signals without requiring a separate dedicated data line for each pixel. The segmented approach maintains precise pixel addressing capability while significantly reducing the number of data lines, thereby preserving design space and aperture ratio.
Data Source
AI summary
An active device substrate and a manufacturing method thereof are provided. The active device substrate includes a substrate, first and second scan lines, a data line, first and second active devices and first and second pixel electrodes. The first active device includes a first semiconductor channel layer, a first gate, a first source and a first drain. The first gate is electrically connected to the first scan line. The first pixel electrode is electrically connected to the first drain. The second active device includes a second semiconductor channel layer, a second gate and a second drain. The first semiconductor channel layer is connected to a source region of the second semiconductor channel layer. The first semiconductor channel layer and the second semiconductor channel layer belong to same layer. The second gate is electrically connected to the second scan line. The second pixel electrode is electrically connected to the second drain.