Display Device Touch Sensing via LED Capacitors
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Solution Overview
Problem
Existing display devices face challenges in appropriately integrating capacitors for touch sensing functions, which affects the efficiency and design of these devices.
Innovation Solution
The integration of light-emitting diodes arranged in a matrix, control switches, monitor lines, and power lines, where capacitors are formed between monitor lines and power lines via light-emitting diodes to enable touch sensing operations without the need for additional capacitor placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a capacitor is added to enable touch sensing function, then the touch sensing capability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the capacitor function with existing display device components by forming capacitors between monitor lines and power lines, eliminating the need for separate capacitor components and reducing device complexity while maintaining touch sensing capability
Solution Approach 2:
The patent makes existing components (monitor lines and power lines) serve dual purposes: their original functions plus serving as capacitor electrodes for touch sensing, thereby adding functionality without increasing component count
2Adaptability or versatility
If a capacitor is added to enable touch sensing function, then the touch sensing capability is improved, but the manufacturing process becomes more difficult
Solution Approach 1:
The capacitor structure is merged with the existing line structures during the display device manufacturing process, allowing capacitors to be formed using the same fabrication steps as the monitor lines and power lines, thereby simplifying the overall manufacturing process
3Adaptability or versatility
If additional capacitor components are placed in the display device, then the touch sensing function is achieved, but the display area and design flexibility are reduced
Solution Approach 1:
The patent makes existing functional components (monitor lines and power lines) serve dual purposes by forming capacitors between them, eliminating the need for additional capacitor components and preserving maximum display area and design flexibility
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 allows for effective touch sensing capabilities within display devices, enhancing their functionality and design by utilizing existing components to form capacitors for sensing purposes.
Implementation Method 1
forming a plurality of capacitors between a plurality of monitor lines of a display device and a plurality of power lines of the display device via a plurality of light-emitting diodes
Data Source
AI summary
An operating method of a display device includes: forming a plurality of capacitors between a plurality of monitor lines of a display device and a plurality of power lines of the display device via a plurality of light-emitting diodes; and performing touch sensing by using the capacitors. The light-emitting diodes are arranged in a matrix. A plurality of control switches of the display device is arranged in the matrix, and is electrically coupled to a plurality of first terminals of the light-emitting diodes, respectively. The monitor lines are electrically coupled to the first terminals of the light-emitting diodes, respectively. The power lines are electrically coupled to a plurality of second terminals of the light-emitting diodes, respectively.