Transparent Display Sensor Electrode Integration

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Solution Overview

Problem

Conventional transparent displays face challenges in achieving both transparency and image quality while incorporating touch input functionality, often resulting in increased thickness due to the need for external touch panels.

Innovation Solution

The display device integrates light-transmitting parts with sensor electrodes between pixel elements, allowing for touch detection without external touch panels, thereby maintaining transparency and image quality while enabling touch input functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a touch panel is installed on the outside of the display panel to add touch input function, then touch input functionality is achieved, but thickness increases

Engineering Contradiction:

Improvetouch input functionalityVSAvoidthickness

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent combines the touch sensor electrode and the display electrode into a single integrated structure. The sensor electrode is formed in the light-transmitting part of the display panel, merging the touch sensing function with the display structure, thereby eliminating the need for a separate external touch panel and reducing overall thickness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display panel structure is designed to perform multiple functions: it serves as both the display medium and the touch sensing component. The light-transmitting part of the display panel simultaneously enables light transmission for display and houses the sensor electrode for touch detection, achieving multi-functionality in a single component.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If sensor electrodes are integrated into light-transmitting parts of the display panel, then touch functionality is achieved without external touch panels, but electromagnetic interference may increase

Engineering Contradiction:

Improvetouch input functionalityVSAvoidelectromagnetic interference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a shield electrode as an intermediary component positioned between the sensor electrode and the pixel circuit. This shield electrode acts as a mediator that blocks electromagnetic fields from the pixel circuit, preventing interference with the sensitive sensor electrode while allowing the integrated structure to function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the electromagnetic environment by introducing a shield electrode that creates separate zones: one for the sensor electrode and another for the pixel circuit. This segmentation isolates the sensor electrode from harmful electromagnetic fields generated by the pixel circuit, reducing interference.

Inventive Principle:

Principle #1Segmentation

3Reliability

If transparent display is implemented with both transparency and image quality, then display performance is improved, but adding touch function increases complexity

Engineering Contradiction:

Improvedisplay performanceVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the touch sensing function into the existing display structure by forming the sensor electrode in the light-transmitting part. This integration combines display and touch functions into a single unified structure, avoiding the need for separate external touch panels and reducing overall structural complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light-transmitting part of the display panel is designed to serve multiple purposes: it enables light transmission for transparent display and simultaneously houses the sensor electrode for touch detection. This multi-functionality reduces the need for additional components and simplifies the overall device structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enables thinner, lighter, and cost-effective transparent displays with integrated touch functionality without compromising image quality or transparency, allowing for touch input from both sides of the display.

Implementation Method 1

the light-transmitting part includes a sensor electrode for detecting electrostatic capacitance

Methodology Applied

Scientific EffectElectrostatic capacitance: Capacitance

Implementation Method 2

a shield electrode shielding the electromagnetic field

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS11360597B2Display device with input function

Publication Date: 2022.06.14 MAGNOLIA WHITE CORP

AI summary

A display device with an input function is provided having a plurality of pixel parts arranged at intervals in a first direction and a second direction intersecting the first direction, and a display region including a plurality of light-transmitting parts arranged in the gap portions of the pixel parts, the pixel parts include at least one pixel provided with light-emitting elements, the light-transmitting part includes a sensor electrode for detecting electrostatic capacitance.