Transparent Conductive Layer Touch Electrodes in Display Panels
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Solution Overview
Problem
The manufacturing process for touch layers in display panels is complex and costly, leading to inefficiencies in production.
Innovation Solution
A display panel design that incorporates a light-transmitting function display area with touch electrodes formed from a transparent conductive layer, allowing for touch functionality without additional masks, thus simplifying the manufacturing process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a touch function layer is manufactured using an additional mask, then touch functionality is achieved, but manufacturing cost increases and production efficiency decreases
Solution Approach 1:
The patent merges the touch electrode function with the transparent conductive layer that is already part of the display panel structure. By forming the touch electrode directly on the transparent conductive layer without requiring an additional mask, the invention combines multiple functions into existing layers, thereby achieving touch functionality while avoiding increased manufacturing complexity and cost
2Reliability
If a touch function layer is manufactured using an additional mask, then touch functionality is achieved, but production efficiency decreases
Solution Approach 1:
The invention integrates the touch electrode formation process into the existing manufacturing workflow by utilizing the transparent conductive layer already present in the display panel. This merging eliminates the need for separate mask-based touch layer fabrication, thereby maintaining touch functionality while improving production efficiency through process integration
3Reliability
If touch electrodes are formed in the light-transmitting function display area, then touch performance is improved, but light transmittance may be affected
Solution Approach 1:
The patent applies local quality by forming touch electrodes specifically in the light-transmitting function display area where touch interaction is needed, while utilizing the transparent conductive layer's inherent optical properties. The touch electrodes are positioned and designed to maintain high light transmittance in this specific region, achieving both touch performance and optical quality through localized structural optimization
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 enables a touch function to be realized in the light-transmitting function display area without affecting light transmittance, ensuring good touch performance while simplifying the manufacturing process and reducing costs.
Implementation Method 1
A capacitive touch technology is widely used in various display devices, and its basic principle is to use tools such as fingers or stylus to generate capacitance with a touch screen. Electrical signals formed by capacitance changes before and after touch operations are used to determine whether the panel is touched and determine touch coordinates.
Data Source
AI summary
A display panel and a mobile terminal are provided. The display panel includes an array driving layer, a first electrode layer, a light-emitting layer, and a second electrode layer. The array driving layer includes a thin film transistor layer and a transparent conductive layer. The light-emitting layer includes a first pixel arranged on a normal display area and a second pixel arranged on a light-transmitting function display area. A via hole is formed in the light-transmitting function display area and between two adjacent second pixels. The transparent conductive layer includes a plurality of touch electrodes corresponding to the via hole.