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

VSEngineering 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

Engineering Contradiction:
Improveluminous brightnessVSAvoiddisplay structure complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If the display brightness is increased, then the luminous brightness improves, but light crosstalk increases

Engineering Contradiction:
Improvedisplay brightnessVSAvoidlight crosstalk
Core Design Contradiction:
Illumination intensityVSObject-generated harmful factors

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.

Inventive Principle:
Principle #24Intermediary (Mediator)

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.

Inventive Principle:
Principle #35Parameter changes

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

Methodology Applied
Scientific EffectLight convergence: Lens

Implementation Method 2

a refractive index of the first planarization layer is less than a refractive index of the micro-lens layer

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 3

the color film layer includes a plurality of filter portions

Methodology Applied
Scientific EffectLight filtering: Filter (optical)

Implementation Method 4

reduces light crosstalk

Methodology Applied
Scientific EffectLight crosstalk reduction: Absorption (EM radiation)

Data Source

PatentUS12550597B2Display module and display device
Publication Date: 2026.02.10 KUNMING BOE DISPLAY TECH CO LTD
  • US12550597B2 patent drawing
  • US12550597B2 patent drawing
  • US12550597B2 patent drawing

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.