Display Panel Transfer Hole Layout for Narrow-Bezel Sealing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The increasing demand for narrow border display devices exacerbates the risk of exposing transfer holes due to poor coating accuracy of sealant layers, leading to water vapor corrosion and short-circuiting between electrostatic rings and grounding parts, compromising the reliability of display panels.

Innovation Solution

The display panel design includes first signal lines with specific straight and bending sections, transfer lines connected through transfer holes, and a sealant layer covering these holes, aligning their arrangement with the coating trajectory to ensure complete coverage and prevent exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the border width is reduced to achieve narrow border design, then the display area is increased, but the risk of transfer hole exposure increases due to poor sealant coating accuracy

Engineering Contradiction:

Improvedisplay areaVSAvoidtransfer hole exposure risk

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-positioning the electrostatic ring and transfer lines in specific locations before the sealing process. The electrostatic ring is placed in the non-display area at a predetermined position, and transfer lines are routed through transfer holes at specific locations. This preliminary arrangement ensures that when sealant is applied, the transfer holes are already in optimal positions for complete coverage, preventing exposure even when border width is reduced.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses the electrostatic ring as an intermediary element between the display area and the border edge. This electrostatic ring serves multiple functions: it provides electrostatic discharge protection, acts as a reference structure for positioning transfer holes, and creates a buffer zone that ensures sealant coverage reaches adequate distances. The intermediary structure allows narrow border design while maintaining reliable sealing of transfer holes.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If transfer holes are positioned closer to the edge to reduce border width, then the display area is maximized, but the sealant layer may not completely cover the transfer holes

Engineering Contradiction:

Improvedisplay areaVSAvoidsealant coating accuracy

Core Design Contradiction:

Area of stationary objectVSManufacturing precision

Solution Approach 1:

The transfer holes are pre-positioned at predetermined locations that are optimized for sealant coverage. The electrostatic ring is first positioned, and then transfer holes are placed at predetermined distances from the electrostatic ring and from the border edge. This preliminary positioning ensures that the sealant application process can achieve complete coverage without requiring extremely high coating precision, as the holes are already in the most favorable positions for sealing.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies local quality by creating different spatial zones with different sealing requirements. The electrostatic ring creates a reference zone, and transfer holes are positioned in specific local areas where sealant coverage is most critical. By locally optimizing the position of each transfer hole relative to the electrostatic ring and border edge, the design ensures adequate sealing without requiring uniform high-precision coating across the entire border area.

Inventive Principle:

Principle #3Local quality

3Ease of manufacture

If the sealant layer coating accuracy is poor, then manufacturing cost is reduced, but transfer holes may be exposed leading to water vapor corrosion and short-circuiting

Engineering Contradiction:

Improvesealant coating processVSAvoidprotection against water vapor and short-circuiting

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The electrostatic ring and transfer line positions are predetermined and established before sealant application. This preliminary structuring creates a robust framework that is tolerant of variations in sealant coating accuracy. The transfer holes are positioned at predetermined locations that maximize the likelihood of complete coverage even when coating precision varies, thereby maintaining reliability without requiring expensive high-precision coating processes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The electrostatic ring serves as a cushioning reference structure that compensates for poor sealant coating accuracy. By positioning the electrostatic ring first and then placing transfer holes at predetermined distances from it, the design creates a buffer zone that absorbs variations in coating precision. This beforehand cushioning ensures that even with poor coating accuracy, the sealant is likely to completely cover the transfer holes, preventing water vapor intrusion and short-circuiting.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12517402B2Display panel and display device

Publication Date: 2026.01.06 HEFEI BOE OPTOELECTRONIC TECH CO LTD

AI summary

The present disclosure relates to a display panel and a display device. In the display panel, multiple transfer lines are arranged in a layer different from a layer in which first signal lines are located, and the transfer lines are connected to parts of the first signal lines close to bending sections through transfer holes. Multiple transfer holes are close to an edge of a non-display area along a first direction in sequence and are away from the edge of the non-display area along a second direction in sequence.