LED Display Layout With Integrated Touch Electrodes and Bank Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices with LEDs lack integrated touch functionality, requiring separate components and complex structures that complicate the integration of light-emitting diodes (LEDs) and touch sensors, affecting efficiency and user experience.
Innovation Solution
A display device design that incorporates a display substrate with sub-pixel areas, where LEDs and touch sensor electrodes are arranged in adjacent areas, separated by banks, with the touch sensor electrodes operating in self-capacitance or mutual-capacitance methods, and embedded in a filling layer to enable seamless touch functionality and light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate components are used for LEDs and touch sensors, then device functionality is achieved, but device complexity increases
Solution Approach 1:
The patent combines LED light-emitting structures and touch sensor electrodes into a single integrated display device. The LED is positioned in a first area while the touch sensor electrode is positioned in a second area, both within the same display structure, eliminating the need for separate components and reducing overall device complexity while maintaining full functionality.
2Device complexity
If LEDs and touch sensors are integrated in the same area, then device complexity is reduced, but interference between components increases
Solution Approach 1:
The patent divides the display area into distinct first and second areas. The LED is disposed in the first area while the touch sensor electrode is disposed in the second area, with both areas being adjacent but spatially separated. This segmentation prevents electrical and optical interference between the LED and touch sensor while maintaining a simplified integrated structure.
Solution Approach 2:
Different regions of the display are assigned different functions: the first area is optimized for light emission with the LED, while the second area is optimized for touch sensing with the electrode. This local differentiation allows each component to operate independently without interference while contributing to the overall integrated device functionality.
3Productivity
If compact integration is achieved, then manufacturing efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
By dividing the display into distinct first and second areas with clear boundaries, the patent simplifies the manufacturing process. Each area can be fabricated and positioned independently, reducing the overall precision requirements compared to integrating components in overlapping or intermixed configurations, while still achieving compact integration.
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 design enhances touch sensitivity and reduces interference by integrating LEDs and touch sensors in a compact, efficient manner, improving user interaction and device performance.
Implementation Method 1
A light-emitting diode ("LED") is one type of a semiconductor element, that is, a p-n junction diode, in which holes and electrons are injected when a forward bias is applied thereto and energy generated by recombination of the holes and electrons is transformed into light.
Implementation Method 2
the touch sensor electrode may include an electrode operating in a self-capacitance method and sense a capacitance change of a single touch electrode, and touch sensor wirings may respectively and electrically connected to the touch sensor electrode and reciprocally exchange electrical signals of the touch sensor electrodes with an external device
Data Source
AI summary
A display device includes a display substrate in which a plurality of sub-pixel areas is defined, a light-emitting diode (“LED”) on the display substrate, a touch sensor electrode on the display substrate and including at least one touch electrode, and a bank separating the plurality of the sub-pixel areas, where each of the plurality of the sub-pixel areas may include a first area in which the LED is disposed and a second area in which the touch sensor electrode is disposed.