AAGIP Scan Line Layout for Large OLED Crosstalk Reduction

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Solution Overview

Problem

Existing OLED display devices experience crosstalk and smear due to data signal fluctuations, particularly in large-area displays, which affect image quality and efficiency.

Innovation Solution

The implementation of Active Area Gate-In-Panel (AAGIP) units between adjacent pixel blocks, where scan lines are connected and operated independently on a block basis to reduce the influence of data signal variations, minimizing crosstalk and smear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If AAGIP units are disposed between adjacent pixel blocks to reduce crosstalk and smear, then image quality is improved, but device complexity increases

Engineering Contradiction:
Improveimage qualityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The display panel is divided into multiple pixel blocks with AAGIP units positioned between adjacent blocks. Each AAGIP unit independently controls scan lines for its adjacent pixel blocks, segmenting the scan signal distribution to prevent crosstalk and smear while maintaining overall system functionality.

Inventive Principle:
Principle #1Segmentation

2Reliability

If scan lines are connected and operated independently on a block basis, then crosstalk and smear are reduced, but manufacturing complexity increases

Engineering Contradiction:
Improvecrosstalk reductionVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The scan line structure is segmented into multiple independent segments, each serving a specific pixel block. AAGIP units are positioned at boundaries between blocks to independently control scan lines, enabling block-based operation that reduces crosstalk while following standard manufacturing processes.

Inventive Principle:
Principle #1Segmentation

3Area of stationary object

If large-area display is implemented to meet size requirements, then display area is improved, but RC delay increases

Engineering Contradiction:
Improvedisplay areaVSAvoidRC delay
Core Design Contradiction:
Area of stationary objectVSLoss of time

Solution Approach 1:

The large display area is divided into multiple pixel blocks with AAGIP units positioned between them. This segmentation allows scan lines to be operated independently in each block, reducing the effective signal transmission distance and minimizing RC delay while maintaining the overall large display area.

Inventive Principle:
Principle #1Segmentation

4Reliability

If data signal fluctuations are reduced to minimize crosstalk, then image quality is improved, but signal stability requirements increase

Engineering Contradiction:
Improveimage qualityVSAvoidsignal stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The scan line system is segmented into independent blocks controlled by AAGIP units. This segmentation isolates signal fluctuations in one block from other blocks, reducing the propagation of crosstalk and smear while maintaining signal stability requirements for each independent block.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20260020465A1Display panel having each active area gate-in-panel (AAGIP) unit disposed between adjacent ones of the plurality of pixel blocks and display device including the same
Publication Date: 2026.01.15 LG DISPLAY CO LTD
  • US20260020465A1 patent drawing
  • US20260020465A1 patent drawing
  • US20260020465A1 patent drawing

AI summary

Disclosed are a display panel having a large area, high resolution, a narrow bezel, low power consumption, and having reduced Resistance Capacitance (RC) delay, and a display device including the same. The display panel includes an Active Area Gate-In-Panel (AAGIP) disposed between adjacent pixel blocks, wherein the AAGIP unit is configured to: connect an n scan line disposed in and along sub-pixels of an n-th row of the pixel block on one side of the AAGIP unit and an n scan line disposed in and along sub-pixels of an (n+1)-th row of the pixel block on the other side thereof to each other; and connect an n+1 scan line disposed in and along sub-pixels of an (n+1)-th row of the pixel block on one side thereof and an n+1 scan line disposed in and along sub-pixels of an n-th row of the pixel block on the other side thereof to each other. Thus, defect such as crosstalk or smear caused by data line transition is reduced.