Display Substrate Heat Dissipation Holes for Brightness Uniformity
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Solution Overview
Problem
The integration of a gate driving circuit onto a base substrate in display products leads to heat dissipation issues, causing display brightness uniformity problems due to heat affecting sub-pixels.
Innovation Solution
A display substrate design that includes a heat dissipation hole structure between the gate driving circuit and sub-pixels, allowing for effective heat dissipation through the structure, which includes a cathode layer and a heat conduction pattern in contact with the base substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a gate driving circuit is integrated onto a base substrate in display products, then the frame can be narrowed and the process can be simplified, but heat dissipation issues occur causing display brightness uniformity problems
Solution Approach 1:
The patent divides the base substrate into distinct functional regions: a display area containing sub-pixels and a non-display area containing the gate driving circuit. This spatial segmentation isolates the heat-generating circuit from the heat-sensitive display region, allowing independent optimization of each area without mutual interference.
Solution Approach 2:
The patent extracts the gate driving circuit from the display area and relocates it to the non-display area of the base substrate. By removing the heat source from proximity to the sub-pixels, the circuit can be integrated onto the substrate without causing brightness uniformity issues in the display region.
2Device complexity
If the gate driving circuit is placed close to sub-pixels for integration, then device complexity is reduced, but heat from the circuit affects sub-pixel brightness uniformity
Solution Approach 1:
The patent segments the substrate into a display area and a non-display area, with the gate driving circuit positioned in the non-display area. This spatial separation eliminates the harmful thermal influence on sub-pixels while maintaining circuit integration benefits.
Solution Approach 2:
The patent introduces a voltage adjustment circuit as an intermediary component between the gate driving circuit and the sub-pixels. This intermediary compensates for voltage changes caused by thermal effects, thereby maintaining display brightness uniformity even when the circuit is integrated nearby.
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
The proposed solution ensures uniform display brightness by effectively dissipating heat generated by the gate driving circuit, preventing heat from influencing sub-pixels and improving the overall heat dissipation capacity.
Implementation Method 1
a heat conduction pattern, the heat conduction pattern is located in the heat dissipation hole structure, the heat conduction pattern is located between the cathode layer and the base substrate, and the heat conduction pattern is in contact with the cathode layer and the base substrate
Data Source
AI summary
A display substrate and a display device. The display substrate comprises: a base substrate, and a gate driving circuit and a plurality of sub-pixels arranged on the base substrate; the display substrate further comprises a heat dissipation hole structure, and at least part of an orthographic projection of the heat dissipation hole structure onto the base substrate is located between an orthographic projection of the gate driving circuit onto the base substrate and an orthographic projection of the sub-pixels onto the base substrate.