Display Frame Wiring Layout for Bend-Induced Signal Line Breaks

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Solution Overview

Problem

Existing display devices with bending regions in the frame region are prone to signal line disconnections, leading to unrecoverable failures like high-luminance display, heat generation, and smoke generation due to floating signal lines when bent.

Innovation Solution

Incorporating a high-potential-side power supply voltage wiring line in the frame region connected to data signal lines via a pull-up resistor, ensuring electrical continuity even when disconnections occur across the bending portion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If a bending region is provided in the frame region to achieve frame narrowing, then the frame width can be reduced without reducing the display region width, but disconnection may occur in the signal line extending across the bending region

Engineering Contradiction:

Improveframe widthVSAvoidsignal line connectivity

Core Design Contradiction:

Length of stationary objectVSReliability

Solution Approach 1:

The patent applies preliminary action by providing a pull-up resistor connected to the data signal line before the bending region. This resistor pre-establishes a safe electrical state that prevents floating voltage conditions. When the video wiring line disconnects at the bending portion, the pull-up resistor has already been in place to maintain proper voltage levels and prevent unrecoverable failures such as high-luminance display, heat generation, and smoke generation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The pull-up resistor serves as a cushioning measure against potential disconnection failures. By introducing this protective component in advance, the patent creates a safety mechanism that absorbs the harmful effects of signal line disconnection. The resistor cushions the electrical system from the adverse effects of floating signal lines, preventing catastrophic failures while allowing the bending region to achieve frame narrowing.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Shape

If the video wiring line extends across the bending portion to maintain electrical connection, then frame narrowing is achieved, but disconnection may occur leading to unrecoverable failures

Engineering Contradiction:

Improveframe configurationVSAvoidhigh-luminance display, heat generation, smoke generation

Core Design Contradiction:

ShapeVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by using the pull-up resistor to counteract the harmful effects of potential disconnection before they occur. When the video wiring line disconnects at the bending portion, the pull-up resistor immediately prevents floating voltage conditions that would otherwise cause high-luminance display, heat generation, and smoke generation. This anti-action is built into the circuit design to neutralize the harmful effects of disconnection.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The patent converts the potential harm of disconnection into a beneficial outcome. By incorporating the pull-up resistor, the system is designed so that even when disconnection occurs at the bending portion, the floating signal line is transformed into a controlled high-impedance state with a defined voltage level. This converts what would be a catastrophic failure into a safe, recoverable condition that allows for normal driving after repair.

Inventive Principle:

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

3Reliability

If the data signal line is electrically connected to the high-potential-side power supply voltage wiring line via a pull-up resistor, then unrecoverable failures are prevented, but additional wiring is required in the frame region

Engineering Contradiction:

Improvefailure preventionVSAvoidwiring structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The high-potential-side power supply voltage wiring line serves multiple functions: it provides power supply voltage to the pixel circuit and simultaneously serves as a reference for the pull-up resistor to prevent floating voltage conditions on the data signal line. This multi-functionality reduces the need for separate protective wiring, as the power supply line itself is utilized to provide both power and voltage reference functions, thereby limiting the increase in wiring complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12471368B2Display device

Publication Date: 2025.11.11 SHARP DISPLAY TECHNOLOGY CORP

AI summary

A display device includes a display region including a data signal line and a frame region surrounding the display region, and a high-potential-side power supply voltage wiring line provided at least in the frame region, the frame region includes a bending portion provided intersecting with an extending direction of the data signal line and a video wiring line electrically connected to the data signal line and extending across the bending portion, and the data signal line is electrically connected to the high-potential-side power supply voltage wiring line via a pull-up resistor.