Display Pixel Gate Pattern for Reduced Circuit Area
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Solution Overview
Problem
Existing display devices face challenges in achieving high-resolution displays due to the large area occupied by pixel circuits, primarily due to the numerous scan lines required.
Innovation Solution
The display device design reduces the number of scan lines by employing a single gate pattern to supply scan signals to transistors in rows and columns, thereby minimizing the pixel circuit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple scan lines are used to supply scan signals to transistors in each row, then reliable signal delivery is ensured, but the number of scan lines increases, occupying more area in the pixel circuit
Solution Approach 1:
The patent merges the function of multiple scan lines into a single scan line by using one scan line to sequentially supply scan signals to multiple transistors (T2, T3) across different rows. This is achieved by timing the turn-on of transistors so that the single scan line can deliver signals to Row 1, then Row 2, and subsequent rows in sequence, eliminating the need for separate scan lines for each row and reducing the overall pixel circuit area.
Solution Approach 2:
The patent implements periodic action by using a single scan line to repeatedly supply scan signals to different rows in a cyclic manner. The scan line alternates between supplying signals to transistors in Row 1, Row 2, and other rows at different time periods, ensuring that each row receives its required scan signals periodically without requiring dedicated scan lines for each row.
2Manufacturing precision
If more scan lines are implemented to cover additional rows, then higher resolution displays are achieved, but the pixel circuit area increases due to more scan lines
Solution Approach 1:
The patent merges multiple scan line functions into a single scan line that serves multiple rows. By using one scan line to sequentially address transistors in Row 1, Row 2, and subsequent rows, the design achieves high-resolution coverage without proportionally increasing the number of scan lines, thus preventing pixel circuit area expansion while maintaining display resolution.
Solution Approach 2:
The patent introduces a time dimension to the scan signal delivery process. Instead of providing simultaneous scan signals to multiple rows through multiple scan lines (spatial approach), the system delivers scan signals sequentially over time using a single scan line. This temporal multiplexing allows high-resolution coverage without increasing the spatial footprint of scan lines in the pixel circuit.
Data Source
AI summary
A display device includes a first pixel disposed in a first row and a first column, a second pixel disposed in the first row and a second column next to the first column, a third pixel disposed in a second row next to the first row and the first column, a fourth pixel disposed in the second row and the second column, a first scan line extending in a first direction between the first row and the second row, and a first gate pattern connected to the first scan line. The first gate pattern includes a gate electrode of a transistor of each of the first to fourth pixels.


