Alternating Width Mask Plate Assembly for OLED Sub-Pixel Formation
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Solution Overview
Problem
Conventional OLED display panel manufacturing methods using mask plates face challenges in achieving high resolution due to deformation of grids and sub-pixels, as the narrow openings required for dense sub-pixel distribution lead to adverse effects on the shape and performance of the display.
Innovation Solution
A mask plate assembly with alternating openings of different widths, where the first and second openings are twice as wide as the third openings, arranged alternately, effectively prevents deformation by increasing the grid and opening widths, allowing for more stable sub-pixel formation and improved display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the width of openings in mask plates is reduced to increase sub-pixel density, then displaying resolution is improved, but the grids between openings deform and adversely affect the shapes of sub-pixels
Solution Approach 1:
The mask plate assembly is divided into multiple mask plates (first, second, and third mask plates), each responsible for forming different color sub-pixels. This segmentation allows each mask plate to have optimized opening widths suitable for its specific function, preventing grid deformation while maintaining high sub-pixel density. The first and second mask plates have openings of one width, while the third mask plate has openings of a different width, enabling differentiated design for each color channel.
Solution Approach 2:
Different mask plates are designed with different opening widths according to their specific requirements. The first and second mask plates have openings of a first width, while the third mask plate has openings of a second width. This local quality differentiation allows each mask plate to be optimized for its specific color sub-pixel formation, preventing grid deformation in areas where it would otherwise occur while maintaining high overall resolution.
2Manufacturing precision
If the width of openings in mask plates is reduced to form smaller sub-pixels, then displaying resolution is improved, but the shape of sub-pixels is adversely affected
Solution Approach 1:
The mask plate assembly is divided into multiple mask plates (first, second, and third mask plates), each responsible for forming different color sub-pixels. This segmentation allows each mask plate to have optimized opening widths suitable for its specific function, preventing grid deformation while maintaining high sub-pixel density. The first and second mask plates have openings of one width, while the third mask plate has openings of a different width, enabling differentiated design for each color channel.
Solution Approach 2:
Different mask plates are designed with different opening widths according to their specific requirements. The first and second mask plates have openings of a first width, while the third mask plate has openings of a second width. This local quality differentiation allows each mask plate to be optimized for its specific color sub-pixel formation, preventing grid deformation in areas where it would otherwise occur while maintaining high overall resolution.
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 allows for the fabrication of high-resolution OLED display panels with stable sub-pixel arrays, enhancing the display's brightness and reducing the adverse effects of grid and opening deformation, resulting in improved display quality.
Implementation Method 1
form sub-pixels for respective colors by evaporating electroluminescent materials for different primary colors using high precision mask plates
Data Source
AI summary
The disclosure provides a mask plate assembly, a method for fabricating an electroluminescent layer, a display panel and a method for driving the same. The mask plate assembly includes a first color mask plate, a second color mask plate, and a third color mask plate each having a plurality of rectangular openings. First openings of the first color mask plate and second openings of the second color mask plate are of a length in a row direction, which is substantially twice as that of third openings of the third color mask plate in the row direction. When the respective mask plates are aligned with one another, the first openings, the second openings, and the third openings are arranged alternately in an order of a first opening, a third opening, a second opening, and another third opening.