Micro-OLED Display Module With Dual Micro-Lens Crosstalk Control
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Solution Overview
Problem
Micro-OLED displays suffer from low luminous brightness, limiting their wide application in various fields.
Innovation Solution
A display module design incorporating a color film layer with filter portions and a micro-lens layer featuring first and second converging lenses, with specific geometric relationships and configurations to enhance light convergence and reduce light crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional Micro-OLED display structure is used, then the display has small volume, light weight, high contrast and fast response speed, but the luminous brightness is low
Solution Approach 1:
The micro-lens layer is segmented into two distinct types of lenses: first converging lenses positioned over pixel regions and second diverging lenses positioned in the gaps between pixels. This segmentation allows each lens type to perform its specific optical function independently, thereby increasing luminous brightness through focused light convergence while managing light crosstalk through the diverging lenses.
Solution Approach 2:
Different regions of the display are assigned different optical properties through the selective placement of first and second converging lenses. The first converging lenses are located specifically over pixel regions to enhance light output in those areas, while the second diverging lenses are positioned in the gaps to control light distribution. This local differentiation optimizes luminous brightness without requiring uniform structural changes across the entire display.
2Illumination intensity
If the display brightness is increased, then the luminous brightness improves, but light crosstalk increases
Solution Approach 1:
The second diverging lenses act as intermediary optical elements positioned in the gaps between pixels. These lenses mediate the light paths by diverging light that would otherwise cause crosstalk between adjacent pixels, while still contributing to overall light extraction. This intermediary structure enables brightness enhancement while actively managing and reducing light crosstalk through controlled light distribution.
Solution Approach 2:
The invention changes the optical parameters of the display system by introducing lenses with different focal lengths and optical powers at different locations. The first converging lenses have positive optical power to focus light and enhance brightness, while the second diverging lenses have negative optical power to spread light and reduce crosstalk. By adjusting these optical parameters spatially, the system achieves both brightness improvement and crosstalk reduction simultaneously.
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
Improves display brightness by 1.4 to 1.6 times within the effective viewing angle and reduces light crosstalk, enhancing the overall performance of Micro-OLED displays.
Implementation Method 1
the micro-lens layer includes a plurality of first converging lenses and a plurality of second converging lenses
Implementation Method 2
a refractive index of the first planarization layer is less than a refractive index of the micro-lens layer
Implementation Method 3
the color film layer includes a plurality of filter portions
Implementation Method 4
reduces light crosstalk
Data Source
AI summary
A display module, including: a display panel; and a color film layer and a micro-lens layer, provided on a light-emitting side of the display panel; where, the color film layer includes a plurality of filter portions, and the micro-lens layer includes a plurality of first converging lenses and a plurality of second converging lenses; a gap is provided between two adjacent first converging lenses, and an orthographic projection of a first converging lens on the display panel is located within an orthographic projection of a filter portion on the display panel; a second converging lens is provided in the gap between two adjacent first converging lenses, and a vertex of the second converging lens is located between a vertex of the first converging lens and a bottom surface of the first converging lens.


