Reflective Display Panel Layout for Mirror Function and High Contrast

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Solution Overview

Problem

Existing display technologies struggle to integrate mirror and display functions effectively, particularly in applications requiring high contrast and reduced light reflection in active areas.

Innovation Solution

A display panel design featuring a reflective layer with alternating filter and reflective portions, positioned on the light exit side of the display substrate, which corresponds to light-emitting and non-light-emitting regions respectively, to manage ambient light reflection and enhance display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a reflective layer is added to achieve mirror functionality, then mirror function is improved, but light reflection in active areas increases causing reduced display contrast

Engineering Contradiction:

Improvemirror functionVSAvoiddisplay contrast

Core Design Contradiction:

Adaptability or versatilityVSIllumination intensity

Solution Approach 1:

The reflective layer is segmented into multiple independent reflective units arranged in an array, where each unit corresponds to a non-light-emitting region. This segmentation allows selective reflection only in specific areas (non-light-emitting regions) while maintaining display quality in light-emitting regions, thus resolving the contradiction between mirror function and display contrast.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The reflective layer is designed with spatially varying properties: reflective portions are positioned only in non-light-emitting regions to provide mirror functionality, while light-emitting regions maintain their original display characteristics. This local differentiation enables the display panel to simultaneously achieve mirror function in specific areas and maintain high contrast in display areas.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If a reflective layer is added to achieve mirror functionality, then mirror function is improved, but device structure becomes more complex

Engineering Contradiction:

Improvemirror functionVSAvoidlayer structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The reflective layer is merged with the existing encapsulation structure of the display panel. The reflective units are integrated into the encapsulation layers, combining the protective encapsulation function with the mirror reflection function in a single integrated structure, thereby reducing overall device complexity while achieving dual functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The encapsulation layers serve dual purposes: they provide the necessary protective encapsulation for the display elements and simultaneously function as the reflective layer for mirror functionality. This multi-functionality reduces the need for separate dedicated components, simplifying the overall device structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Illumination intensity

If filter portions are added to the reflective layer to correspond to light-emitting regions, then display contrast is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvedisplay contrastVSAvoidpattern alignment

Core Design Contradiction:

Illumination intensityVSManufacturing precision

Solution Approach 1:

The reflective units and filter portions are positioned during the encapsulation process, which occurs early in the manufacturing sequence before final assembly steps. This preliminary positioning establishes the spatial relationship between reflective and filter elements early on, allowing subsequent manufacturing steps to align to this established pattern, thereby reducing the cumulative precision requirements.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The reflective units and filter portions are designed with matching geometries and spatial relationships that create a self-aligning structure. The periodic arrangement and corresponding positions of reflective units with filter portions create an equipotential pattern that naturally aligns during manufacturing, reducing the need for high-precision active alignment procedures.

Inventive Principle:

Principle #12Equipotentiality

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 solution achieves a balance between mirror functionality and display quality by reducing ambient light reflection in active areas, increasing contrast, and improving overall display performance.

Implementation Method 1

the reflective layer is located on a light exit side of the display substrate... the reflective portions correspond to the non-light-emitting region

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

the filter portions correspond to the light-emitting regions... reducing ambient light reflection in active areas

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Data Source

PatentUS12219806B2Display panel and method of manufacturing the same, and display apparatus

Publication Date: 2025.02.04 CHENGDU BOE OPTOELECTRONICS TECH CO LTD

AI summary

A display panel includes a display substrate and a reflective layer. The display substrate includes light-emitting regions and a non-light-emitting region. The reflective layer is located on a light exit side of the display substrate and includes a plurality of filter portions and reflective portions arranged between every two adjacent filter portions. The reflective portions correspond to the non-light-emitting region, and the filter portions correspond to the light-emitting regions.