Shared Sub-Pixel Layout for Higher-Resolution OLED Displays
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Solution Overview
Problem
Existing display apparatuses face challenges in improving resolution due to limitations in process level and manufacturing costs, making it difficult to reduce pixel pitch or inter-pixel distance.
Innovation Solution
A pixel structure for organic light-emitting display panels that allows sub-pixels to be shared by multiple groups, using a fine metal mask to form pixel units with alternating sub-pixel columns and groups, optimizing sub-pixel distances and widths, and employing sub-pixel rendering technology to enhance display resolution and color accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel pitch or inter-pixel distance is reduced to improve resolution, then display resolution is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent merges the functionality of multiple sub-pixels by allowing a first sub-pixel to be shared by two second sub-pixel groups. Specifically, the first sub-pixel serves as a common sub-pixel for both the second sub-pixel group (containing second sub-pixel) and the third sub-pixel group (containing third sub-pixel), thereby reducing the total number of sub-pixels needed while maintaining display resolution
Solution Approach 2:
The first sub-pixel is designed with multi-functionality to serve multiple purposes simultaneously. It acts as a sub-pixel for both second sub-pixel groups, enabling a single physical sub-pixel to contribute to the display output of multiple adjacent pixel units, thus reducing the overall sub-pixel count without sacrificing resolution
2Ease of manufacture
If the number of sub-pixels is reduced to lower manufacturing cost, then manufacturing cost is reduced, but display resolution deteriorates
Solution Approach 1:
The patent combines the serving roles of multiple sub-pixels by allowing one first sub-pixel to serve two second sub-pixel groups. This merging approach reduces the total number of sub-pixels that need to be manufactured and deposited, lowering manufacturing cost while the shared sub-pixel rendering maintains adequate display resolution through coordinated control
Solution Approach 2:
The patent changes the functional parameters of existing sub-pixels by enabling a first sub-pixel to serve multiple pixel units simultaneously. This parameter change allows the system to achieve the same or better display resolution with fewer sub-pixels, thereby reducing manufacturing cost without sacrificing quality
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 improves display resolution and color accuracy while reducing manufacturing complexity and costs, enhancing the space utilization rate of the display substrate.
Implementation Method 1
Sub-pixels on a substrate of an organic light-emitting display panel are usually formed through evaporation process. During evaporation, organic light-emitting materials with different luminous characteristics are deposited onto corresponding sub-pixel positions of the substrate by a fine metal mask (FMM).
Data Source
AI summary
Provided are a pixel structure, a fine metal mask, a display apparatus and a control method. The pixel structure includes: a plurality of first sub-pixel columns, where the first sub-pixel column includes a plurality of first sub-pixels arranged along a first direction, and two adjacent first sub-pixel columns are separated by a second sub-pixel column. The second sub-pixel column includes a plurality of second sub-pixel groups, the second sub-pixel group includes a second sub-pixel and a third sub-pixel, and along the first direction, the second sub-pixels and the third sub-pixels in the second sub-pixel column are arranged alternately, and the first sub-pixel is configured to form a pixel unit with two second sub-pixel groups for displaying.