Display Substrate Light-Transmitting Region Spacer Design
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Solution Overview
Problem
Existing OLED display substrates face challenges in achieving high light transmittance, particularly when attempting to hide front cameras beneath the screen, leading to issues like ghost images due to light diffraction.
Innovation Solution
The display substrate incorporates a light-transmitting region with a specific arrangement of effective sub-pixel sets and main spacers, where sub-spacers are arranged along both column and row directions with varying widths, optimizing light transmission and reducing diffraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the front camera is hidden below the screen to increase screen occupation ratio, then the screen occupation ratio is improved, but light diffraction occurs causing ghost images
Solution Approach 1:
The patent divides the light-transmitting region into multiple sub-regions separated by main spacers, which are further divided into multiple sub-spacers. This segmentation approach reduces the overall diffraction effect by breaking up the continuous light path, thereby minimizing ghost images while maintaining high screen occupation ratio
Solution Approach 2:
The patent applies different spacer configurations to different regions of the display substrate. The light-transmitting region contains main spacers with multiple sub-spacers, while the normal display region has different spacer arrangements. This local differentiation optimizes light transmission properties in the camera region while maintaining display quality elsewhere
2Illumination intensity
If traditional spacer arrangements are used, then manufacturing is simpler, but light transmittance is insufficient and diffraction is pronounced
Solution Approach 1:
The patent segments each main spacer into multiple sub-spacers arranged in series along the light transmission path. This multi-stage segmentation increases light transmittance by reducing diffraction at each interface while the modular structure maintains reasonable manufacturing complexity
Solution Approach 2:
The patent introduces a new dimension of spacer architecture by arranging sub-spacers in series along the light transmission direction rather than using a single continuous spacer. This dimensional change from one-level to multi-level spacer structure optimizes optical performance
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 enhances light transmittance and improves imaging effects by minimizing diffraction, resulting in clearer camera images and better display quality.
Implementation Method 1
leading to issues like ghost images due to light diffraction
Data Source
AI summary
A display substrate and a display device are disclosed. The display substrate includes a light-transmitting region, wherein the light-transmitting region includes a plurality of rows of effective sub-pixel sets and a plurality of main spacers, each row of the plurality of rows of effective sub-pixel sets includes a plurality of effective sub-pixel sets, each of the plurality of effective sub-pixel sets includes a plurality of effective sub-pixels, any two adjacent effective sub-pixel sets in a same row are spaced apart from each other by one main spacer, the main spacer includes at least two sub-spacers arranged along a column direction. At least two sub-spacers arranged along a row direction have different widths; and/or at least two sub-spacers of a same main sub-spacer have different widths.