OLED Subpixel Signal Line Layout for Through-Hole Disturbance Control
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Solution Overview
Problem
High-resolution OLED display panels face challenges in optimizing pixel structures to prevent signal disturbances due to small layout spaces and potential signal disturbances from mistakenly drilling through holes during the manufacturing process, which can lead to reduced yield and operational stability.
Innovation Solution
The display panel includes a design with initialization signal lines having a protruding portion and a protruding portion that the initialization signal line protruding away from the reset signal line, and a conductive connecting part with a structure that allows for a larger distance between coupling points to avoid signal disturbances during manufacturing, enhancing yield and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the layout space is reduced to achieve higher resolution, then the quantity of pixel structures increases, but the risk of signal disturbance during manufacturing increases
Solution Approach 1:
The initialization signal line is segmented into multiple sections with different widths. The first section has a first width, the second section has a second width greater than the first width, and the third section has a third width. This segmentation allows the signal line to provide enhanced shielding in the second section while maintaining compact overall dimensions, thus preventing signal disturbance between adjacent pixel structures despite reduced layout space.
Solution Approach 2:
Different sections of the initialization signal line have different local properties (different widths). The second section is locally enlarged to provide enhanced electromagnetic shielding and prevent signal disturbance, while other sections maintain smaller dimensions. This local quality variation allows the structure to prevent signal interference without uniformly increasing the overall layout space, enabling higher pixel density.
2Area of moving object
If the pixel structure is compacted to achieve smaller pixel size, then the screen-to-body ratio increases, but the manufacturing precision required increases to avoid mistakes
Solution Approach 1:
The initialization signal line is designed with a pre-enlarged second section before the through hole formation process. This preliminary structural preparation ensures that even if manufacturing variations occur during through hole drilling, the enlarged section provides sufficient margin to prevent signal disturbance, thereby reducing the strictness of manufacturing precision requirements while maintaining compact pixel size.
Solution Approach 2:
The enlarged second section of the initialization signal line acts as a cushioning structure that compensates for potential manufacturing errors. By providing extra width in advance, it creates a buffer zone that prevents signal disturbance even when through hole positioning has minor deviations, thus protecting against manufacturing precision issues while maintaining small pixel dimensions.
3Quantity of substance
If the distance between signal lines is reduced to increase pixel density, then the resolution increases, but signal interference between lines increases
Solution Approach 1:
The enlarged second section of the initialization signal line acts as an intermediary shielding structure between adjacent pixel structures. This intermediate section with greater width provides enhanced electromagnetic shielding, preventing signal interference between closely spaced signal lines while allowing the overall pixel density to increase due to the compact design of other portions.
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 design effectively prevents signal disturbances during manufacturing, ensuring higher yield and improved operational stability of high-resolution OLED display panels.
Implementation Method 1
a pixel electrode and a common electrode, thereby driving the liquid crystal display panel
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A display panel, a manufacture method thereof and a display device are provided. The display panel includes multiple subpixel zones and a reset signal line pattern, an initialization signal line pattern and a conductive connecting part pattern in each of the subpixel zones. The initialization signal line pattern includes a first body portion and a first protruding portion coupled to each other. The orthographic projection of the first body portion onto the base is between the orthographic projection of the first protruding portion onto the base and the orthographic projection of the reset signal line pattern onto the base. The orthographic projection of a first end portion of the conductive connecting part pattern onto the base and the orthographic projection of the first protruding portion onto the base have a first overlapped region. In the first overlapped region, the first end portion is coupled to the first protruding portion, a second end portion of the conductive connecting part pattern is coupled to a target coupling part, and the orthographic projection of the reset signal line pattern onto the base is between the orthographic projection of the target coupling part onto the base and the orthographic projection of the initialization signal line pattern onto the base.