Pixel Structure Reducing Peripheral Wiring for Slim Frames
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Solution Overview
Problem
In wearable devices like smart watches and bracelets, the increased number of wiring around pixels due to multiple data lines makes it difficult to achieve a slim frame design, as it complicates the reduction of the frame width in packaged displays.
Innovation Solution
A pixel structure with data lines and scan lines oriented in different directions, where pixel units are periodically disposed, and a driving method that uses time-division-multiplexed scan to drive three switch elements with a single data line, reducing the number of data lines and wiring on the periphery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple data lines are used to drive pixel units, then the display resolution and color quality are improved, but the number of wiring on the periphery portion is increased, making it difficult to achieve a slim frame design
Solution Approach 1:
The patent applies periodic action by using time-division multiplexing to sequentially activate different groups of pixel units across multiple frames. Each data line drives multiple pixel units at different time intervals, allowing the same physical wiring to serve multiple functions over time. This reduces the total number of data lines needed while maintaining the ability to drive all pixel units with high quality.
Solution Approach 2:
The patent introduces a third dimension (time) to the traditional two-dimensional pixel array addressing scheme. By adding the time dimension through frame-based sequential scanning, the system can address more pixel units than the number of physical data lines, effectively reducing wiring complexity while maintaining display quality.
2Adaptability or versatility
If multiple data lines are routed to the periphery portion of pixels, then more pixel units can be driven, but the frame width of the packaged display cannot be reduced
Solution Approach 1:
The patent uses periodic frame-based scanning to sequentially activate different groups of pixel units. Instead of requiring all data lines to be simultaneously available at the periphery, the system activates pixel units in groups across multiple frames, allowing the same data lines to serve different pixel groups at different times. This reduces the perimeter wiring requirement while maintaining the ability to drive all pixel units.
Solution Approach 2:
The patent implements dynamic scanning where the active pixel group changes over time. Different groups of pixel units are activated in different frames, allowing the system to flexibly utilize the same wiring infrastructure for different portions of the display at different times, thereby reducing the static wiring requirements at the periphery.
3Ease of operation
If three switch elements are driven by separate data lines, then each pixel unit can be independently controlled, but the number of data lines and peripheral wiring is increased
Solution Approach 1:
The patent applies periodic action by organizing pixel units into groups that are sequentially activated across different frames. Within each frame, a specific group of pixel units (including multiple switch elements) is activated together using a single data line. This temporal separation allows independent control of different pixel groups at different times, reducing the total number of data lines needed while maintaining independent controllability.
Solution Approach 2:
The patent merges the control of multiple switch elements under a single data line by activating them simultaneously within the same frame. Instead of dedicating separate data lines to each switch element, the system combines their control into a single time-synchronized operation, reducing wiring complexity while preserving functional independence through temporal separation of different groups.
Data Source
AI summary
A pixel structure includes data lines disposed along a first direction, scan lines disposed along a second direction and pixel units periodically disposed along the first and the second directions. In a first pixel unit, a first switch element is coupled to a first scan line and a first data line, the second switch element is coupled to the first scan line, and a third switch element is coupled to the first scan line. In a second pixel unit, a fourth switch element is coupled to a second scan line, the first data line and the second switch element, and a fifth switch element is electrically coupled to the second scan line and the third switch element. In a third pixel unit, a sixth switch element is coupled to a third scan line, the first data line and the fifth switch element.