Transflective Display Substrate Reflection Layer Segmentation

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Solution Overview

Problem

Mirror display devices in existing technologies suffer from poor display effects due to low transmittance and contrast, primarily caused by the influence of external reflected light in their transflective design.

Innovation Solution

A display substrate is designed with a base substrate featuring light emitting units and a reflection layer that includes patterns and openings corresponding to pixel display areas, allowing for improved light transmission and reflection functions, which enhances the display effect by minimizing light loss and interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a transflective design is used in mirror display devices, then both display and reflection functions are achieved, but the display effect deteriorates due to low transmittance and contrast caused by external reflected light interference

Engineering Contradiction:

Improvedual function (display and reflection)VSAvoiddisplay brightness and contrast

Core Design Contradiction:

Adaptability or versatilityVSIllumination intensity

Solution Approach 1:

The reflection layer is segmented into multiple patterns with openings between them, allowing different regions to serve different functions: patterns provide reflection while openings allow light transmission for display. This segmentation resolves the contradiction by spatially separating the reflection and display functions within the same layer structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the reflection layer are designed with different properties: the patterned regions provide high reflectivity for mirror function, while the opening regions provide high transmittance for display function. This local differentiation allows each region to optimize its specific function, resolving the contradiction between dual functionality and display quality.

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If a reflection layer is added to achieve mirror function, then reflection capability is improved, but display transmittance deteriorates due to light blocking by the reflection layer

Engineering Contradiction:

Improvereflection capabilityVSAvoidlight transmission loss

Core Design Contradiction:

Illumination intensityVSLoss of energy

Solution Approach 1:

The reflection layer is divided into discrete patterns with openings between them, so that light can pass through the opening regions without being blocked by the reflection layer. This segmentation reduces light transmission loss while maintaining reflection capability in the patterned regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The harmful blocking effect of the reflection layer is extracted and localized to only the patterned regions, while the opening regions are specifically designed to allow light transmission. This extraction separates the reflection function from the light-blocking effect, resolving the contradiction between reflection capability and light transmission.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If external reflected light is allowed to enter the display, then mirror reflection function is achieved, but display contrast deteriorates due to light interference

Engineering Contradiction:

Improvereflection functionVSAvoiddisplay contrast

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The reflection layer patterns are designed to reflect light in specific directions while the openings allow controlled light passage. This segmentation enables the system to distinguish between reflected light from the mirror function and ambient light that would interfere with display contrast, resolving the contradiction between reflection function and display quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The external reflected light that would normally interfere with display contrast is converted into a beneficial mirror reflection function by directing it through the patterned regions. The openings allow the display light to pass through while the patterns redirect external light for mirror function, transforming the harmful interference into a useful feature.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 improves the display brightness and contrast by ensuring light emitted from pixel areas can be transmitted effectively while maintaining the reflection function, thus enhancing the overall display effect.

Implementation Method 1

a reflection layer on the base substrate. The reflection layer includes a plurality of patterns and a plurality of openings defined between adjacent patterns of the plurality of patterns

Methodology Applied

Scientific EffectLight reflection: Reflection

Data Source

PatentUS11581513B2Display substrate and method for manufacturing the same, and display device

Publication Date: 2023.02.14 BEIJING BOE TECH DEV CO LTD

AI summary

The present disclosure provides a display substrate, a method for manufacturing the same, and a display device. The display substrate includes: a base substrate; a plurality of light emitting units on the base substrate, where the plurality of light emitting units include a plurality of pixel display areas; and a reflection layer on the base substrate. The reflection layer includes a plurality of patterns and a plurality of openings defined between adjacent patterns of the plurality of patterns, and positions of the plurality of openings are corresponding to positions of the plurality of pixel display areas.