Transparent Connection Lines for Uniform Display Brightness

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Solution Overview

Problem

Full screen display apparatuses experience non-uniform display brightness due to the non-uniform distribution of driving circuits and connection lines, which affects image acquisition when an image acquisition unit is integrated into the display panel.

Innovation Solution

A display substrate with a setup region divided into an acquisition region and a transition region, where light emitting devices are provided in both regions, and driving circuits are located in the transition region, connected to light emitting devices in the acquisition region through uniformly distributed connection lines made of transparent conductive material, ensuring uniform distribution and minimizing light obstruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If driving circuits are concentrated in specific regions to simplify layout, then device complexity is reduced, but display brightness uniformity deteriorates

Engineering Contradiction:

Improvelayout complexityVSAvoiddisplay brightness uniformity

Core Design Contradiction:

Device complexityVSIllumination intensity

Solution Approach 1:

The patent applies local quality by creating different sub-transition regions with different functions: first sub-transition regions contain only connection lines, while second sub-transition regions contain both connection lines and light emitting devices. This localized differentiation allows the connection lines to be uniformly distributed for brightness uniformity while maintaining layout simplicity.

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If connection lines are uniformly distributed to improve brightness uniformity, then display quality is improved, but device complexity increases

Engineering Contradiction:

Improvedisplay brightness uniformityVSAvoidconnection line distribution complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The transition region is segmented into first and second sub-transition regions. The first sub-transition regions contain only connection lines extending from peripheral driving circuits, while the second sub-transition regions contain both connection lines and light emitting devices. This segmentation enables uniform distribution of connection lines across the setup region, improving brightness uniformity while organizing complexity into manageable segments.

Inventive Principle:

Principle #1Segmentation

3Productivity

If light emitting devices are densely packed to increase display area utilization, then productivity is improved, but image acquisition quality deteriorates

Engineering Contradiction:

Improvedisplay area utilizationVSAvoidimage acquisition quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by setting different light emitting device distribution densities in different regions: the setup region (including acquisition and transition regions) has a lower distribution density to allow light penetration for image acquisition, while the display region has a higher distribution density for full display utilization. This localized density differentiation resolves the contradiction between display area utilization and image acquisition quality.

Inventive Principle:

Principle #3Local quality

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 configuration achieves uniform display brightness across the setup region, enhancing display quality and allowing for effective image acquisition without compromising the display functionality.

Implementation Method 1

connection lines made of transparent conductive material, connected to the peripheral driving circuit in the transition region and extending into the acquisition region

Methodology Applied

Scientific EffectElectrical Conduction: Conduction (electrical)

Implementation Method 2

transparent conductive material connection lines... minimizing light obstruction

Methodology Applied

Scientific EffectLight Transmission: Refraction

Data Source

PatentUS12112696B2Light emitting display apparatus and substrate providing uniform brightness of different positions of setup region

Publication Date: 2024.10.08 CHENGDU BOE OPTOELECTRONICS TECH CO LTD

AI summary

A display substrate is provided with a setup region including an acquisition region and a transition region adjacent to the acquisition region. The display substrate includes: a base substrate; light emitting devices on the base substrate, at least a part of the light emitting devices are provided in each of the acquisition region and the transition region; and driving circuits on the base substrate, each of the driving circuits being configured to provide a driving signal to a corresponding light emitting device. A driving circuit corresponding to a light emitting device in the transition region is a first local driving circuit which is in the transition region. A driving circuit corresponding to a light emitting device in the acquisition region is a peripheral driving circuit which is in the transition region and is connected to the corresponding light emitting device in the acquisition region through a connection line.