Embedded Touch LED Panel Layout for Thin Low-Noise Displays
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Solution Overview
Problem
Existing display technologies face challenges in integrating touch sensors with light emitting diode (LED) displays, leading to increased bezel areas, manufacturing complexity, and noise interference, while also lacking efficient power management.
Innovation Solution
A touch sensor embedded LED display device with a vertical structure that incorporates a touch sensor electrode and routing lines within the display circuit area, utilizing a reflective relay electrode and shared conductive materials to reduce bezel area and noise, and optimizing power consumption through LED usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch sensor is integrated with LED display using conventional structures, then touch sensing function is achieved, but bezel area increases and device thickness increases
Solution Approach 1:
The patent merges the touch sensor electrode with the pixel electrode by using the same conductive material layer for both functions. The pixel electrode serves dual purposes: driving the LED and sensing touch input, thereby eliminating the need for separate touch sensor electrodes and reducing bezel area.
Solution Approach 2:
The patent implements multi-functionality by designing the pixel electrode to simultaneously perform LED driving and touch sensing functions. This universal approach allows a single structure to fulfill multiple roles, reducing overall device complexity and bezel area.
2Adaptability or versatility
If separate touch sensor electrodes and routing lines are added, then touch sensing is enabled, but manufacturing complexity increases
Solution Approach 1:
The patent combines touch sensor routing lines with existing display routing lines by using the same conductive material layers. This integration eliminates the need for separate routing line deposition processes, thereby reducing manufacturing complexity.
Solution Approach 2:
The patent creates universal routing lines that serve both display signal transmission and touch sensor signal transmission functions. This multi-functional design reduces the total number of routing line layers needed, simplifying the manufacturing process.
3Adaptability or versatility
If additional touch sensor layers are incorporated, then touch sensing capability is achieved, but device thickness and weight increase
Solution Approach 1:
The patent merges the touch sensor electrode layer with the pixel electrode layer by using the same conductive material. This integration eliminates additional thickness that would result from separate touch sensor layers, maintaining a thin device profile.
Solution Approach 2:
The patent implements a multi-functional electrode structure that provides both display and touch sensing capabilities within a single layer, avoiding the need for additional thickness-consuming layers.
4Adaptability or versatility
If more conductive material layers are used for touch routing, then touch signal transmission is improved, but noise interference increases
Solution Approach 1:
The patent combines touch sensor routing lines with display routing lines using the same conductive material layers. This merging reduces the total number of conductive layers, thereby minimizing noise interference from multiple adjacent conductive structures.
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
The solution results in a thinner, lighter, and more manufacturable display device with reduced bezel area and noise interference, while enabling efficient power usage and simplified manufacturing processes.
Implementation Method 1
a light emitting diode disposed over the display substrate and including a first electrode and a second electrode
Implementation Method 2
The relay electrode may be located under the light emitting diode, overlap the light emitting diode, and include a reflective electrode material
Data Source
AI summary
The present disclosure provides a touch sensor embedded light emitting diode display device and a touch display panel. The device includes a substrate, a light emitting diode (LED) disposed over the substrate. The LED includes a first electrode and a second electrode. The device includes a pixel electrode electrically connected to the first electrode and a common electrode electrically connected to the second electrode. The device includes a driving transistor disposed over the substrate. The transistor includes an active layer, a source electrode, a drain electrode, and a gate electrode. The device includes a relay electrode electrically connecting the source electrode or drain electrode to the pixel electrode. The device includes a first touch sensor electrode disposed spaced apart from the light emitting diode and including the same conductive material as the pixel electrode.