Integrated Pixel Electrode Touch Sensing for Display Thickness Reduction
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Solution Overview
Problem
The existing manufacturing processes for display devices with integrated touch panels are time-consuming and costly, and result in increased thickness due to the need for a separate touch panel, which complicates the manufacturing process.
Innovation Solution
Incorporating a touch sensor into the display device's pixel structure, where the driving electrodes function as touch sensing electrodes, eliminating the need for a separate touch panel and reducing manufacturing complexity and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate touch panel is attached to the display device using an on-cell technique, then touch sensing functionality is achieved, but manufacturing time and manufacturing cost increase
Solution Approach 1:
The patent merges the display electrode and touch sensing electrode into a single integrated structure. The pixel electrode serves dual functions as both the display driving electrode and the touch sensing electrode, eliminating the need for a separate touch panel layer. This integration directly resolves the technical contradiction by achieving touch sensing functionality without adding separate manufacturing processes for an independent touch panel.
Solution Approach 2:
The pixel electrode is designed to perform multiple functions simultaneously: it acts as the display electrode for image rendering and as the touch sensing electrode for detecting touch inputs. This multi-functionality approach allows the display device to incorporate touch sensing capabilities without requiring additional dedicated components or manufacturing steps, thereby reducing manufacturing time while maintaining adaptability.
2Adaptability or versatility
If a separate touch panel is attached to the display device using an on-cell technique, then touch sensing functionality is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges the display electrode and touch sensing electrode into a single integrated structure. The pixel electrode serves dual functions as both the display driving electrode and the touch sensing electrode, eliminating the need for a separate touch panel layer. This integration directly resolves the technical contradiction by achieving touch sensing functionality without adding separate manufacturing processes for an independent touch panel.
Solution Approach 2:
The pixel electrode is designed to perform multiple functions simultaneously: it acts as the display electrode for image rendering and as the touch sensing electrode for detecting touch inputs. This multi-functionality approach allows the display device to incorporate touch sensing capabilities without requiring additional dedicated components or manufacturing steps, thereby reducing manufacturing cost.
3Adaptability or versatility
If a separate touch panel is attached to the display device, then touch sensing functionality is achieved, but the thickness of the display device increases
Solution Approach 1:
The patent merges the display electrode and touch sensing electrode into a single integrated structure. The pixel electrode serves dual functions as both the display driving electrode and the touch sensing electrode, eliminating the need for a separate touch panel layer. This integration directly resolves the technical contradiction by achieving touch sensing functionality without adding separate manufacturing processes for an independent touch panel.
4Adaptability or versatility
If a separate touch panel is attached to the display device, then touch sensing functionality is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent merges the display electrode and touch sensing electrode into a single integrated structure. The pixel electrode serves dual functions as both the display driving electrode and the touch sensing electrode, eliminating the need for a separate touch panel layer. This integration directly resolves the technical contradiction by achieving touch sensing functionality without adding separate manufacturing processes for an independent touch panel.
Solution Approach 2:
The pixel electrode is designed to perform multiple functions simultaneously: it acts as the display electrode for image rendering and as the touch sensing electrode for detecting touch inputs. This multi-functionality approach allows the display device to incorporate touch sensing capabilities without requiring additional dedicated components or manufacturing steps, thereby reducing manufacturing process complexity.
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 approach reduces manufacturing time and cost while maintaining the ability to detect touch inputs, achieving a thinner display device by integrating touch sensing functionality directly into the display panel.
Implementation Method 1
the third power voltage may be smoothed by the first capacitance
Implementation Method 2
the first electrode may form touch capacitance between a touch input object and the first electrode
Data Source
AI summary
A display device includes a pixel including a first electrode and a second electrode and having first capacitance formed between the first electrode and the second electrode; a power supply to provide the first electrode with a third power voltage including an alternating wave form and to provide the second electrode with a second power voltage; and a sensor to sense a touch current flowing between the first electrode and the second electrode in response to the touch driving signal.