Spliced Display Panel Cover Plate Layout to Prevent Wire Breakage

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Solution Overview

Problem

Conventional display panel splicing techniques face issues with wire-breakage and chromatic aberration due to direct abutting between flexible substrates and rigid bases, leading to poor splicing and displaying effects.

Innovation Solution

A display panel design featuring flexible substrates with a transparent cover plate and light shielding layer, where the bending region's orthographic projection falls within the light shielding layer, allowing the transparent cover plates of neighboring base plates to partially contact and abut, preventing chromatic aberration and eliminating the need for a rigid base.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid base is provided at the bottom to support displaying base plates, then structural support is achieved, but wire-breakage occurs due to direct abutting between the flexible substrate and the rigid base corner

Engineering Contradiction:

Improvestructural supportVSAvoidwire-breakage

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

A buffer layer is introduced as an intermediary between the flexible substrate and the rigid base. This buffer layer acts as a mediator that absorbs mechanical stress and prevents direct contact between the flexible substrate's wire and the rigid base's sharp corner, thereby eliminating wire-breakage while maintaining structural support functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the rigid base with a flexible substrate that has bending capability. The flexible substrate itself acts as both the structural support and the bending element, eliminating the need for a separate rigid base and preventing wire-breakage caused by rigid-flexible interface contact.

Inventive Principle:

Principle #30Flexible shells and thin films

2Adaptability or versatility

If the rigid base is cut at the bending region to enable bending, then bending capability is achieved, but wire-breakage imperfect is caused by direct abutting

Engineering Contradiction:

Improvebending capabilityVSAvoidwire-breakage imperfect

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent employs a flexible substrate with inherent bending capability that does not require cutting. The flexible substrate can be bent continuously without creating sharp edges or exposed corners that would cause wire-breakage, thereby achieving both bending capability and manufacturing precision.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The buffer layer serves as a protective intermediary that covers the bending region and prevents any potential wire exposure during bending operations, ensuring manufacturing precision is maintained even when bending capability is exercised.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the packaging layer is provided at the top of the displaying base plate, then device protection is achieved, but warping occurs after solidification affecting splicing effect

Engineering Contradiction:

Improvedevice protectionVSAvoidwarping

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent replaces the rigid packaging layer with a transparent cover plate that has flexible or semi-flexible properties. This cover plate can accommodate dimensional changes and stress relief without warping, maintaining stable composition for splicing while still providing device protection and a flat splicing surface.

Inventive Principle:

Principle #30Flexible shells and thin films

4Ease of manufacture

If the bending region is left unblackened, then manufacturing simplicity is maintained, but chromatic aberration occurs at the gap between spliced base plates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidchromatic aberration

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The transparent cover plate acts as a visual intermediary that covers the bending region gaps between spliced base plates. It blocks the view of any unblackened regions and their associated chromatic aberration, while allowing the manufacturing process to remain simple without requiring blackening of the bending region.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The transparent cover plate optically masks the bending region by creating a uniform visual interface. Even if the bending region underneath has color variations or is unblackened, the cover plate presents a consistent optical surface that eliminates visible chromatic aberration at spliced gaps.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS20240154074A1Display panel, method for fabricating display panel and displaying device

Publication Date: 2024.05.09 BOE TECHNOLOGY GROUP CO LTD

AI summary

The present application provides a display panel, a method for fabricating a display panel and a displaying device. The display panel particularly includes at least two neighboring displaying base plates; each of the them includes a flexible substrate and a transparent cover plate that are provided in stack; the flexible substrate is delimited into a displaying region, a bending region and a bonding region, the displaying region and the bonding region are connected by the bending region, the displaying region and the bonding region are parallel, and the bonding region is located on one side of the displaying region that is away from the transparent cover plate; the transparent cover plate is provided with a light shielding layer on one side that is closer to the flexible substrate, and an orthographic projection of the bending region on the transparent cover plate is within an area of the light shielding layer.