Display Pixel Layout With Same-Color Data-Line Sharing to Reduce IC Heating
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Solution Overview
Problem
Organic light emitting display devices face issues with drive IC heating and reduced lifespan due to inverted sub-pixel structures causing voltage variations and parasitic capacitance deviations, leading to image quality degradation and increased power consumption.
Innovation Solution
A display device design where sub-pixels emitting the same color share a data line through a share connection line, reducing the number of drive ICs and eliminating voltage variations, thereby preventing IC heating and extending lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If two sub-pixels for emitting different colors share one data line to reduce manufacturing costs, then the number of drive ICs is reduced, but the drive IC heats up and its lifespan is reduced due to voltage variations and data swings
Solution Approach 1:
The invention segments the data lines by color, creating separate data lines for red, green, and blue sub-pixels instead of sharing data lines across different colors. This segmentation eliminates the voltage variations and data swings that occur when different colored sub-pixels share a data line, thereby preventing drive IC heating and extending its lifespan while still reducing the overall number of drive ICs needed
Solution Approach 2:
The invention introduces a new dimensional approach by organizing sub-pixels in inverted rows where adjacent sub-pixels emit the same color. This spatial reorganization allows same-color sub-pixels to share data lines without causing voltage variations, as they operate at the same potential level, thus resolving the heating issue while maintaining cost efficiency
2Device complexity
If the circuit area of sub-pixels has an inverted structure to connect to one data line, then the number of drive ICs is reduced, but image quality is reduced due to distance deviation and parasitic cap deviation
Solution Approach 1:
The invention applies local quality by making the circuit area structure dependent on the sub-pixel's position and color. Specifically, sub-pixels in inverted rows have their circuit areas configured to face the same direction, while sub-pixels in non-inverted rows maintain traditional configurations. This localized structural adaptation ensures consistent electrical characteristics and parasitic capacitance values across different positions, maintaining image quality while enabling data line sharing
Solution Approach 2:
The invention introduces a new spatial dimension by creating inverted rows where adjacent sub-pixels emit the same color. This reorganization changes the geometric arrangement from the traditional grid to an alternating inverted pattern, which allows same-color sub-pixels to share data lines with consistent distance and parasitic capacitance characteristics, thereby maintaining image quality while reducing drive IC count
Data Source
AI summary
A display apparatus according to an embodiment of the present disclosure comprising: a first pixel comprising a first sub-pixel including a first circuit area and a first light emission area, and disposed in a first direction; a second pixel disposed adjacent to the first pixel in the first direction, and comprising another first sub-pixel including a second circuit area and a second light emission area and emitting light with the same color as the first sub-pixel; a first data line disposed on one side of the first circuit area in a second direction; and a first share connection line connecting the first data line to each of the first circuit area and the second circuit area.