Single-Substrate Display Partitioning for Seamless Images and ESD Protection

Solution Overview

Problem

Tiled display devices suffer from discontinuous images due to non-display areas between panels and are prone to electrostatic discharge, which can damage components.

Innovation Solution

A display device design with interlaced scan lines and separate driving circuits for different areas, allowing independent operation of display units within each area, and electrostatic discharge protection structures to prevent damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple display panels are tiled and assembled to display different images, then the display device can show multiple images simultaneously, but discontinuous images occur due to non-display areas between panels

Engineering Contradiction:

Improveability to display multiple imagesVSAvoidimage continuity

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The display device is divided into multiple independent display areas (first display area and second display area) on a single substrate, with each area having its own driving circuit. This segmentation allows independent control of each area while eliminating the need for physical panel tiling, thus avoiding the non-display gaps that cause image discontinuity.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple display panels are tiled and assembled, then the display device can display different images, but the device becomes prone to electrostatic discharge that damages components

Engineering Contradiction:

Improveability to display different imagesVSAvoidelectrostatic discharge protection

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The display device is divided into multiple independent display areas (first display area and second display area) on a single substrate, with each area having its own driving circuit. This segmentation allows independent control of each area while eliminating the need for physical panel tiling, thus avoiding the non-display gaps that cause image discontinuity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A third scan line is introduced as an intermediary component between the first and second display areas. This third scan line is electrically connected to both driving circuits and positioned between the other scan lines, providing an additional electrical pathway that helps distribute and dissipate electrostatic charges, thereby protecting the components from electrostatic discharge damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Shape

If a single display panel is used with separate driving circuits for different areas, then seamless display is achieved without non-display areas, but the device complexity increases due to multiple scan lines and driving circuits

Engineering Contradiction:

Improvedisplay continuityVSAvoidnumber of scan lines and driving circuits

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

The display device is divided into multiple independent display areas (first display area and second display area) on a single substrate, with each area having its own driving circuit. This segmentation allows independent control of each area while eliminating the need for physical panel tiling, thus avoiding the non-display gaps that cause image discontinuity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the display device are assigned different functions: the first display area and second display area are controlled by separate driving circuits, while the third scan line provides intermediary functionality between them. This local differentiation allows seamless display across areas while managing complexity through functional specialization.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250228000A1Display device

Publication Date: 2025.07.10 INNOLUX CORP

AI summary

A display device includes: a substrate having an active area including a first area and a second area; a first driving circuit disposed adjacent to the first area; a second driving circuit disposed adjacent to the second area; first scan lines electrically connected to the first driving circuit; second scan lines electrically connected to the second driving circuit, wherein the first scan lines and the second scan lines extend along a first direction; first display units disposed in the first area and respectively electrically connected to the first scan lines and electrically separated from the second scan lines; and second display units disposed in the second area and respectively electrically connected to the second scan lines and electrically separated from the first scan lines. The active area is disposed between the first driving circuit and the second driving circuit in the first direction.