Display Sub-Pixel Switching Circuit for Compact Wearable Devices
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Solution Overview
Problem
Existing electronic devices with displays face challenges in efficiently utilizing space for providing light to the user's eye, particularly in wearable devices where compactness is crucial.
Innovation Solution
The electronic device includes a display panel with a matrix arrangement of pixels, a switching circuit that selectively connects main gate and source lines to sub-pixels, and a display driving circuit that controls the switching circuit to drive the sub-pixels based on pixel data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional display structure with fixed pixel connections is used, then the display can provide stable image output, but the space utilization efficiency is poor and the device size increases
Solution Approach 1:
The display panel is divided into multiple sub-pixels (first sub-pixel, second sub-pixel, third sub-pixel, fourth sub-pixel) within each pixel unit. Each sub-pixel can be independently controlled through selective connection to main gate lines and main source lines, allowing the display to activate only the necessary sub-pixels for current display content, thereby improving space utilization efficiency while maintaining stable image output
Solution Approach 2:
The patent implements dynamic connection switching between sub-pixels through switching circuits. The connection between main gate lines/main source lines and sub-pixels is not fixed but can be dynamically reconfigured based on display requirements. This dynamic switching capability allows the same physical display area to serve multiple functional purposes, reducing the overall device size while maintaining display stability
2Volume of moving object
If wearable device compactness is prioritized, then space utilization improves, but the ability to provide sufficient light to user's eye deteriorates
Solution Approach 1:
Multiple sub-pixels are merged within each pixel unit, allowing them to share common main gate lines and main source lines. This merging approach reduces the total number of independent connection lines needed, enabling compact wiring layout that fits within small wearable device volumes while collectively providing sufficient light output through the coordinated operation of multiple sub-pixels
Solution Approach 2:
The main gate lines and main source lines are designed to serve multiple sub-pixels simultaneously. Each main gate line can connect to multiple sub-pixels through the switching circuit, and each main source line can supply data to multiple sub-pixels. This multi-functional design reduces the overall number of connection lines, shrinking device volume while maintaining adequate light output capability through the combined emission of multiple sub-pixels
Data Source
AI summary
An electronic device may include: a display panel in which a plurality of pixels arranged in a matrix; a first main gate line extending in a first direction and configured to be electrically connectible to a first pixel among the plurality of pixels; a second main gate line extending in the first direction and configured to be electrically connectible to a second pixel among the plurality of pixels, the second pixel being adjacent to the first pixel along a second direction intersecting the first direction; a first main source line extending in the second direction and configured to be electrically connectible to the first pixel; and a second main source line extending in the second direction and configured to be electrically connectible to a third pixel among the plurality of pixels, the third pixel being adjacent to the first pixel along the first direction.