Display Power Line Segmentation for Heat Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The minimization of the non-display area in display devices leads to increased electrical resistance in power lines, causing heat generation and potential degradation of adjacent pixels.
Innovation Solution
The display device incorporates a substrate with a main region for the display area and a sub-region with a bending area, featuring a first power line with multiple power path portions. The first power path portion is closer to the edge of the sub-region, reducing the current concentration area and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the non-display area is minimized to enlarge the display area, then the display area is increased, but the electrical resistance in the power line increases and heat generation occurs
Solution Approach 1:
The power line is divided into multiple segments (first power line segment, second power line segment, third power line segment) arranged in parallel between the same two nodes. This segmentation increases the total cross-sectional area of the power line, thereby reducing electrical resistance and heat generation while maintaining the minimized non-display area design
Solution Approach 2:
Multiple power line segments are combined in parallel configuration to form a composite power transmission path. The parallel arrangement of multiple segments with different routing patterns (straight, bent, zigzag) effectively increases the total conductive area and reduces overall resistance
2Area of stationary object
If the non-display area is minimized, then the display area is enlarged, but the power line width is reduced causing current concentration and heat generation
Solution Approach 1:
The power line is segmented into multiple parallel paths (first, second, and third power line segments) that distribute the electrical current. This segmentation prevents current concentration in a single narrow path, reducing resistive heating and protecting adjacent pixels from thermal damage
Solution Approach 2:
The power transmission is transitioned from a single-dimensional narrow path to a multi-dimensional parallel structure. By utilizing vertical stacking of multiple power line segments at different positions, the effective cross-sectional area for current flow is increased without expanding the horizontal footprint
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 reduces heat generation in the power line, minimizing pixel degradation and enhancing the overall performance of the display device.
Implementation Method 1
a first power line in the non-display area and the first area of the substrate and to which a first power voltage is applied
Implementation Method 2
since electrical resistance in the power line increases and an electric current is concentrated in a bottle-neck portion of the power line, heat may be generated in the power line
Data Source
AI summary
An electronic device includes a display panel, where the display panel includes a display area having a pixel, a non-display area, and a non-display sub-region including a first area and a bending area, along a first direction, and a first power line which is in the non-display area and the first area, transmits a power voltage to the pixel, and includes a first and a second power connection portion spaced apart from each other in the first direction, and first and second power path portions which are spaced apart from each other along a second direction and connect the first and second power connection portions to each other. The length of the non-display sub-region is smaller than the length of the non-display area, and the first power path portion is closer to the outer edge of the non-display sub-region than the second power path portion.