Sub-Pixel Initialization Voltage Routing for Dense Display Layouts
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Solution Overview
Problem
The resolution of display devices is compromised due to the need for each sub-pixel to have two contact areas for receiving initialization voltages, leading to an increased sub-pixel size and reduced number of sub-pixels, which affects the overall display density and performance.
Innovation Solution
A display device design where power lines and transmission lines are alternately arranged in odd and even rows and columns, with each sub-pixel circuit area receiving initialization voltages through separate power lines, reducing the need for multiple contact areas and allowing for a more compact sub-pixel layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each sub-pixel is provided with two contact areas to receive first and second initialization voltages from separate power lines, then the initialization voltage supply is improved, but the sub-pixel size increases and the number of sub-pixels decreases
Solution Approach 1:
The power lines are segmented into first power lines for odd rows and second power lines for even rows. Transmission lines are similarly segmented into first transmission lines for odd columns and second transmission lines for even columns. This segmentation allows each sub-pixel to receive initialization voltages through the segmented transmission lines from the respective power lines, maintaining reliable voltage supply while reducing the number of contact areas needed per sub-pixel.
Solution Approach 2:
Different row configurations are applied locally: odd rows use first power lines and first transmission lines, while even rows use second power lines and second transmission lines. This local differentiation allows the display device to achieve compact sub-pixel design with reduced contact areas while maintaining proper initialization voltage supply to all sub-pixels through the locally appropriate line configuration.
2Reliability
If two power lines are disposed in each row to provide initialization voltages, then the voltage distribution is improved, but the display resolution decreases due to increased sub-pixel size
Solution Approach 1:
The power line configuration extends into the column dimension through transmission lines. First power lines in odd rows connect to first transmission lines in odd columns, and second power lines in even rows connect to second transmission lines in even columns. This two-dimensional extension allows voltage distribution across rows and columns, achieving comprehensive voltage coverage while maintaining compact sub-pixel design and high display resolution.
Data Source
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AI summary
A display device includes a substrate including sub-pixel circuit areas that are arranged in m rows and n columns, where m and n are positive integers, first gate lines extending in a row direction, data lines extending in a column direction, initialization power lines extending in the row direction, including first power lines disposed in sub-pixel circuit areas of odd rows and receiving a first initialization voltage and second power lines disposed in sub-pixel circuit areas of even rows and receiving a second initialization voltage, and transmission lines extending in the column direction, including first transmission lines disposed in sub-pixel circuit areas of odd columns and receiving the first initialization voltage from the first power lines and second transmission lines disposed in sub-pixel circuit areas of even columns and receiving the second initialization voltage from the second power lines.