Display Panel Interwoven Metal Lines for Uniform Heating
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Solution Overview
Problem
Existing display panels face challenges in achieving uniform heating without increasing thickness or complexity, as traditional methods require additional indium tin oxide layers and complex processes, which are costly and inefficient, especially in low-temperature environments where liquid crystal response speed is affected.
Innovation Solution
The display panel incorporates a base material with interwoven first and second metal layers, including third metal lines that extend in different directions and are connected to a heating control assembly, allowing for uniform heating without additional film layers, reducing thickness, and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If transparent conductive materials such as indium tin oxide are used to make heating wires in the display panel, then heating function is achieved, but the thickness of the panel increases due to additional film layers
Solution Approach 1:
The heating function is merged with the existing common electrode or pixel electrode by forming a heating film layer that shares the same transparent conductive material layer. This integration eliminates the need for separate heating wire structures, thereby avoiding additional thickness while achieving the heating function.
Solution Approach 2:
The transparent conductive material layer serves multiple functions: it acts as both the common electrode/pixel electrode for display function and as the heating film layer for temperature control. This multi-functionality allows the panel to achieve heating without adding dedicated heating structures that would increase thickness.
2Reliability
If additional indium tin oxide layer and insulating layer are disposed to avoid short circuit, then electrical insulation is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The heating film layer is merged with the existing electrode structure by using the same transparent conductive material layer for both electrode and heating functions. The patterned design allows this single layer to serve dual purposes without requiring separate insulating layers between heating wires and electrodes, thereby reducing manufacturing complexity.
Solution Approach 2:
The transparent conductive material layer is selectively patterned to have different regions: some regions form the electrode structure while other regions form the heating film. This local differentiation within a single layer achieves both electrical function and heating function without requiring additional insulating layers, simplifying the manufacturing process.
3Temperature
If individual indium tin oxide film layer is made and patterned for uniform heating, then heating uniformity is improved, but the manufacturing cost and process complexity increase due to additional mask and exposure procedures
Solution Approach 1:
The heating film layer pattern is merged with the electrode pattern by using the same transparent conductive material layer and the same photomask for both. This integration allows the heating pattern to be formed simultaneously with the electrode pattern during the standard manufacturing process, eliminating the need for additional masks and exposure procedures while ensuring uniform heating distribution.
Solution Approach 2:
The photomask serves a dual function: it patterns both the electrode structure and the heating film layer in a single exposure step. This universal use of the existing mask and exposure process achieves uniform heating distribution without adding dedicated heating layer patterning steps, thereby reducing manufacturing complexity and cost.
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 solution enables efficient and uniform heating of the display panel, improving liquid crystal response speed and reducing costs by eliminating the need for extra film layers and complex processes, while maintaining the panel's thickness and display quality.
Implementation Method 1
the third metal lines are electrically connected to the heating control assembly
Data Source
AI summary
Provided are a display panel and a manufacturing method thereof. The display panel includes a base material and a first metal layer and a second metal layer which are laminated on the base material in a thickness direction of the display panel. The first metal layer includes first metal lines, the second metal layer includes second metal lines, the first metal lines extend in a first direction, and the second metal lines extend in a second direction, the first direction intersects the second direction. The first metal layer or the second metal layer includes third metal lines, a third metal line includes at least two first segments extending in the first direction and at least two second segments extending in the second direction, and two adjacent first segments are connected by one second segment. The display panel further includes a heating control assembly electrically connected to the third metal lines.