OLED Pixel Arrangement Structure for High Resolution
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Solution Overview
Problem
The development of high-resolution OLED display panels is hindered by the difficulty in fabricating precision metal masks due to increased sub-pixel resolution, leading to color mixing and reduced aperture ratio, which affects brightness and service life, and limits mass production.
Innovation Solution
A pixel arrangement structure featuring alternately arranged first and second sub-pixels forming virtual triangles with third sub-pixels, increasing pixel area and reducing fabrication complexity by sharing sub-pixels, thereby improving resolution and display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of OLED display panel is increased, then the display quality is improved, but the fabrication difficulty of precision metal mask increases
Solution Approach 1:
The display panel is divided into different types of sub-pixels (first sub-pixels, second sub-pixels, and third sub-pixels) arranged in alternating patterns. This segmentation allows the precision metal mask to be designed with simpler, more manufacturable opening regions while still achieving high display resolution through the coordinated arrangement of different sub-pixel types.
2Measurement precision
If the resolution of OLED display panel is increased, then the display quality is improved, but color mixing phenomenon becomes more serious
Solution Approach 1:
Different regions of the display panel have different sub-pixel compositions. First pixel rows contain both first and second sub-pixels, while second pixel rows contain only third sub-pixels. This local variation in sub-pixel quality and arrangement allows for better color isolation in critical areas while maintaining high overall resolution, thereby reducing color mixing phenomena.
3Object-generated harmful factors
If the opening region of precision metal mask is reduced to control linearity, then color mixing is reduced, but the aperture ratio is greatly reduced
Solution Approach 1:
The patent combines multiple sub-pixel types (first, second, and third sub-pixels) in a coordinated arrangement where third sub-pixels are positioned at vertices of virtual triangles formed by first and second sub-pixels. This merging of different sub-pixel functions allows the precision metal mask to have larger opening regions without causing color mixing, as the different sub-pixel types work together to maintain color isolation while increasing the effective aperture ratio.
4Measurement precision
If the sub-pixel arrangement density is increased to improve resolution, then the sensory resolution is improved, but the pixel area is reduced
Solution Approach 1:
The patent transitions from conventional linear sub-pixel arrangements to a two-dimensional triangular lattice arrangement where third sub-pixels are positioned at vertices of virtual triangles. This dimensional change in the arrangement pattern allows for higher sensory resolution through better spatial distribution of sub-pixels while maintaining larger individual pixel areas, as the triangular configuration optimizes space utilization more efficiently than traditional linear arrangements.
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 arrangement enhances the resolution, reduces manufacturing difficulties, increases pixel area, and improves the brightness and lifespan of OLED display panels, allowing for higher sensory resolution with lower sub-pixel density.
Implementation Method 1
The illumination principle of the OLED device is that the semiconductor material and organic light-emitting material are driven by an electric field, causing illumination by carrier injection and recombination
Implementation Method 2
Under a certain voltage, electrons and holes are injected respectively from the cathode and the anode to the electron transport layer and the hole transport layer
Implementation Method 3
The electrons and holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer
Implementation Method 4
The electrons and holes meet in the light-emitting layer to form excitons and excite the light-emitting molecules
Implementation Method 5
the latter emits visible light through radiation relaxation
Data Source
AI summary
A pixel arrangement structure is disclosed. The structure includes multiple first pixel rows and multiple second pixel rows arranged alternately. Wherein each of the first pixel rows includes multiple first sub-pixels and multiple second sub-pixels disposed alternately and at intervals, and each of the second pixel rows includes multiple third sub-pixels disposed at intervals. Wherein the first sub-pixel and the second sub-pixel adjacent to the third sub-pixel form a virtual triangle, the third sub-pixel is disposed in the virtual triangle formed by the first sub-pixel and the second sub-pixel adjacent to the third sub-pixel. Applying the pixel arrangement structure to an OLED display panel can improve the resolution, reduce the fabrication difficulty, increase the pixel area, and improve the brightness and life of the OLED display panel.