OLED Display Module Touch Electrode Integration

Solution Overview

Problem

Current OLED display products require improved performance in terms of image quality, power efficiency, and thickness.

Innovation Solution

A display module that integrates a light-emitting unit with a first electrode, a second electrode, and a light-emitting portion, along with a pixel definition layer, allowing for touch control functionality without additional electrode layers, thereby enhancing performance and reducing thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If additional electrode layers are added for touch control functionality, then touch control performance is improved, but device thickness and structural complexity increase

Engineering Contradiction:

Improvetouch control functionalityVSAvoiddisplay module thickness

Core Design Contradiction:

Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The patent applies multi-functionality by enabling the first and second electrodes of the light-emitting unit to serve dual purposes: displaying images and performing touch control operations. The first electrode receives touch driving signals and the second electrode outputs touch sensing signals, eliminating the need for separate touch control electrode layers while maintaining both display and touch functionality

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the display electrode structure with the touch control electrode structure. The first electrode layer and second electrode layer are integrated into the same structural framework, combining the functions of image display and touch sensing into a unified electrode system, thereby reducing overall device thickness

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If additional electrode layers are added for touch control functionality, then touch control performance is improved, but device structural complexity increases

Engineering Contradiction:

Improvetouch control functionalityVSAvoidelectrode layer structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies multi-functionality by enabling the first and second electrodes of the light-emitting unit to serve dual purposes: displaying images and performing touch control operations. The first electrode receives touch driving signals and the second electrode outputs touch sensing signals, eliminating the need for separate touch control electrode layers while maintaining both display and touch functionality

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the display electrode structure with the touch control electrode structure. The first electrode layer and second electrode layer are integrated into the same structural framework, combining the functions of image display and touch sensing into a unified electrode system, thereby reducing overall device complexity

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250130664A1Display module, display apparatus, driving method for display module, and pixel circuit

Publication Date: 2025.04.24 HEFEI VISIONOX TECH CO LTD

AI summary

A display module, a display apparatus, a driving method for a display module, and a pixel circuit. The display module includes: an array base plate; a light-emitting unit arranged at a side of the array base plate and including a first electrode, a second electrode, and a light-emitting portion; a pixel definition layer arranged at a side of the array base plate, the pixel definition layer including a pixel definition portion and a pixel opening defined by the pixel definition portion, and at least a portion of the first electrode being exposed from the pixel opening, in which one of the first electrode and the second electrode is configured to receive a touch driving signal, and the other one of the first electrode and the second electrode is configured to output a touch sensing signal.