Display Pixel Power-Line Layout for Low-Consumption Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As display devices miniaturize, the increased resistance in pixel and pixel circuit lines leads to higher power consumption due to heat generation, necessitating a solution for reduced power consumption.
Innovation Solution
The display device incorporates a specific layout of power lines and data lines, including overlapping and connecting power lines between sub-pixels, with equal resistances, and a structured transistor configuration to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between lines in pixels and pixel circuits is narrowed to miniaturize display devices, then the display device size is reduced, but the resistance of lines increases and power consumption increases due to heat generation
Solution Approach 1:
The power lines are divided into multiple segments (first power line, second power line, third power line, fourth power line) that connect in series between adjacent sub-pixels. This segmentation allows each line segment to have lower individual resistance, and the series connection maintains voltage levels while reducing overall power consumption in miniaturized displays.
2Volume of moving object
If the distance between lines in pixels and pixel circuits is narrowed to miniaturize display devices, then the display device size is reduced, but heat generation increases
Solution Approach 1:
By segmenting power lines into multiple shorter segments connected in series, the current path is distributed across multiple low-resistance connections. This reduces I²R heating in each segment and overall heat generation in the miniaturized display structure.
3Stability of the object's composition
If power lines are configured to have equal resistance between adjacent sub-pixels, then power distribution uniformity is improved, but the complexity of line configuration increases
Solution Approach 1:
The power supply to each sub-pixel is achieved through segmented power lines with equal resistance values. The first sub-pixel receives power through the first and second power lines, while the second sub-pixel receives power through the third and fourth power lines, ensuring uniform power distribution across the display.
Solution Approach 2:
Multiple power lines are combined in series connection to achieve the desired voltage level and equal resistance distribution. The series connection of power lines allows uniform power distribution while maintaining a relatively simple overall structure that can be integrated into the display fabrication process.
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
This configuration allows the display device to operate with relatively low power consumption while maintaining effective pixel functionality.
Implementation Method 1
a (1_2)-th power line overlapping the first pixel circuit, and extending in a second direction crossing the first direction, a (2_2)-th power line overlapping the second pixel circuit, and extending in the second direction
Implementation Method 2
The light-emitting element may emit light in response to this driving current
Implementation Method 3
a resistance of the lines included in the plurality of pixels and the pixel circuits may increase, and thus power consumption may be increased due to heat generation
Data Source
AI summary
According to embodiments of the disclosure, a display device includes a first sub-pixel including a first pixel circuit, a second sub-pixel including a second pixel circuit, and extending in a first direction from the first sub-pixel, a (1_2)-th power line overlapping the first pixel circuit, and extending in a second direction crossing the first direction, a (2_2)-th power line overlapping the second pixel circuit, and extending in the second direction, a (1_1)-th power line connecting the (1_2)-th power line and the second sub-pixel, and extending in the first direction, and a (2_1)-th power line connecting the (2_2)-th power line and the first sub-pixel, and extending in the first direction.