Pixel Unit Circuit Shared Signal Lines for High PPI
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Solution Overview
Problem
Existing display technologies require a large number of wires and circuit elements to achieve normal displaying, limiting their ability to achieve high Pixel Per Inch (PPI) performance.
Innovation Solution
A pixel unit circuit design that includes sub-pixel and pixel compensation sub-unit circuits, utilizing shared signal lines and terminals, and a multiplexer sub-circuit to reduce the number of wires and circuit elements, allowing for efficient data voltage adjustment and high PPI performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pixel compensation circuits are used to achieve normal displaying, then displaying function is maintained, but the quantity of leading wires and circuit elements increases
Solution Approach 1:
The patent merges the display signal transmission function and compensation signal transmission function into a single shared signal line. The same signal line carries display signals during normal operation and compensation signals during compensation mode, thereby reducing the total quantity of leading wires and circuit elements while maintaining both displaying and compensation functions
Solution Approach 2:
The signal line is designed to serve multiple functions: it acts as a display signal line during normal displaying and as a compensation signal line during compensation mode. This multi-functionality eliminates the need for separate dedicated compensation signal lines, reducing device complexity while preserving reliability
2Reliability
If more leading wires and circuit elements are used to achieve normal displaying, then displaying capability is maintained, but PPI (Pixel Per Inch) performance decreases
Solution Approach 1:
By combining display and compensation signal transmission into a single shared line, the patent reduces the number of wires required per pixel. This reduction in wire density allows for higher pixel density arrangements, thereby improving PPI performance while maintaining full displaying capability
Solution Approach 2:
The universal signal line that performs both display and compensation functions reduces the overall wire count in the display panel. This enables closer pixel spacing and higher pixel density, directly improving PPI performance without sacrificing displaying capability
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
The design reduces the quantity of leading wires and circuit elements while maintaining normal displaying capabilities, facilitating the production of high PPI products by reusing signal lines and terminals and optimizing the pixel unit circuit design.
Implementation Method 1
a photosensitive sub-circuit configured to convert light emitted from the light emitting element to an electric signal
Data Source
AI summary
A pixel unit circuit, a driving method of the pixel unit circuit, and a pixel circuit are provided. The pixel unit circuit includes at least one sub-pixel sub-unit circuit connected to display signal lines and display signal terminals; and pixel compensation sub-unit circuit connected to two compensation signal lines and at least one compensation signal terminal, wherein one of the display signal lines and one of the compensation signal lines are a same signal line, and/or one of the display signal terminals and one of the at least one compensation signal terminal are a same signal terminal, and/or the pixel unit circuit further includes a multiplexer sub-circuit, one of the display signal lines is connected to a first terminal of the multiplexer sub-circuit, one of the compensation signal lines is connected to a second terminal of the multiplexer sub-circuit.