Touch Display Panel Electrostatic Releasing Layer Design
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Solution Overview
Problem
Touch display devices are prone to insensitivity due to accumulated electrostatic charges, which can interfere with the display medium and affect control accuracy, as existing designs lack an effective electrostatic releasing mechanism.
Innovation Solution
A touch display panel with an electrostatic releasing layer having a sheet resistance of 109-1012Ω/□, integrated between substrates and electrically connected to a grounding unit, effectively releases accumulated electrostatic charges, preventing electric field interference and maintaining sensitivity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no electrostatic releasing design is implemented, then device structure remains simple, but electrostatic charges accumulate on touch panels causing insensitivity and control issues
Solution Approach 1:
An electrostatic releasing layer is introduced as an intermediary component between the touch panel layers. This layer has specific electrical properties (sheet resistance of 10^9-10^12Ω/□) that allow it to release accumulated electrostatic charges while maintaining electrical isolation from the sensing electrode layer, thus resolving the contradiction between reliability improvement and structural simplicity
Solution Approach 2:
The patent specifies a particular range for the sheet resistance parameter of the electrostatic releasing layer (10^9-10^12Ω/□). By controlling this electrical parameter within a specific range, the layer can effectively release electrostatic charges without interfering with the touch sensing function, thereby improving reliability without excessive structural complexity
2Reliability
If electrostatic releasing layer is added, then electrostatic charges can be released timely, but manufacturing process becomes more complex
Solution Approach 1:
The electrostatic releasing layer is integrated into the existing touch panel manufacturing process as an additional layer between the second substrate and the display medium layer. By merging this function into the standard multi-layer structure, the patent achieves electrostatic release capability without requiring separate manufacturing steps or complex assembly processes
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 electrostatic releasing layer ensures timely discharge of external charges, enhancing the sensitivity and accuracy of touch display devices by preventing electric field interference, thus improving product yield and control precision.
Implementation Method 1
an electrostatic releasing layer disposed on the second substrate and electrically connected to the grounding unit
Data Source
AI summary
The present disclosure provides a touch display panel, comprising: a first substrate; a second substrate disposed opposite to the first substrate; a display medium layer disposed between the first substrate and the second substrate; a sensing electrode layer disposed on the first substrate; and an electrostatic releasing layer disposed on the second substrate, and a sheet resistance of the electrostatic releasing layer is 109-1012Ω/□. The present disclosure also discloses a touch display device using the said touch display panel.