Color Conversion Panel Structure for Uniform Spacing and Light Control

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Solution Overview

Problem

Existing color conversion panels in display devices suffer from light loss and display quality issues due to inconsistent spacing between the color conversion panel and the display panel, which can lead to brightness variations and light leakage around spacers with increased height.

Innovation Solution

A color conversion panel design that maintains a constant distance by incorporating a partition wall with specific openings and layers, including a transmission layer, color conversion layers, and spacers, to prevent unnecessary height increases and ensure uniform spacing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the height of the spacer is increased to maintain distance between panels, then the spacing consistency is improved, but light leakage occurs around the spacer

Engineering Contradiction:
Improvespacing consistencyVSAvoidlight leakage
Core Design Contradiction:
Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The partition wall is divided into multiple segments with different heights corresponding to different openings (first, second, third openings). Each segment is optimized for its specific function: taller segments provide spacing support while shorter segments prevent light leakage. This segmentation allows the structure to simultaneously achieve spacing consistency and light leakage prevention without requiring uniformly increased spacer height throughout.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the interval between color conversion panel and display panel is not constant, then manufacturing flexibility is improved, but display quality deteriorates due to brightness changes

Engineering Contradiction:
Improvemanufacturing flexibilityVSAvoiddisplay quality
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The partition wall structure implements local quality by providing different heights at different locations (openings). The first, second, and third openings have specifically designed heights tailored to their local requirements. This allows the overall structure to maintain constant spacing where needed while providing manufacturing flexibility in other areas, as each local region is optimized for its specific function rather than requiring uniform dimensions throughout.

Inventive Principle:
Principle #3Local quality

3Device complexity

If a simple spacer structure is used, then device complexity is reduced, but spacing control precision is insufficient

Engineering Contradiction:
Improvestructure simplicityVSAvoidspacing control precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The partition wall structure transitions from a simple one-dimensional spacer to a multi-dimensional structure with varying heights across different openings. By introducing vertical dimensionality variations (different heights for first, second, third openings), the structure achieves precise spacing control for multiple functions simultaneously. This dimensional complexity is localized to where needed rather than uniformly applied, maintaining overall structural simplicity while providing the necessary precision.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 design enhances light efficiency and display quality by preventing light leakage and maintaining consistent brightness across the display, while allowing for efficient manufacturing of the color conversion layer.

Implementation Method 1

the transmission layer may be configured to transmit light of a first wavelength

Methodology Applied
Scientific EffectLight transmission: Light

Implementation Method 2

the first color conversion layer may be configured to convert the light of the first wavelength to light of a second wavelength; the second color conversion layer may be configured to convert the light of the first wavelength to light of a third wavelength

Methodology Applied
Scientific EffectLight wavelength conversion: Photoluminescence

Data Source

PatentUS12507565B2Color conversion panel and display device including the same, and manufacturing method thereof
Publication Date: 2025.12.23 SAMSUNG DISPLAY CO LTD
  • US12507565B2 patent drawing
  • US12507565B2 patent drawing
  • US12507565B2 patent drawing

AI summary

A color conversion panel includes: a substrate; a plurality of color filters on the substrate; a partition wall on the substrate, and including a first opening, a second opening, a third opening, and a sub-opening; a first color conversion layer disposed in the first opening of the partition wall; a second color conversion layer disposed in the second opening of the partition wall; a transmission layer disposed in the third opening of the partition wall; an additional layer disposed in the sub-opening of the partition wall; and a spacer on the additional layer.