Sensor Substrate Mesh Electrodes Static Electricity Protection
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Solution Overview
Problem
Touch display devices with liquid crystal display (LCD) panels face issues with static electricity damage and reduced light utilization efficiency due to light interference between the LCD panel and the touch screen panel.
Innovation Solution
A sensor substrate with a blocking pattern, electrodes, a color filter layer, and an overcoating layer is designed to prevent static electricity damage and enhance light utilization efficiency, featuring a mesh-type arrangement of lines and connection lines with transparent conductive layers to improve touch sensing sensitivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch screen panel is coupled with an LCD panel to perform both display and touch sensing functions, then functionality is improved, but the device becomes more complex and susceptible to static electricity damage
Solution Approach 1:
The patent combines the touch sensing function and display function into a single integrated sensor substrate structure. The sensor substrate includes a base substrate with electrodes, color filter layers, and protective layers that serve both as touch sensing elements and as part of the display assembly, eliminating the need for separate touch screen panels and reducing overall device complexity.
Solution Approach 2:
The sensor substrate is designed as a multi-functional component that simultaneously provides touch sensing capabilities and integrates with the LCD display structure. The same substrate serves as both the touch sensor and part of the display assembly, allowing one component to perform multiple functions that were previously requiring separate devices.
2Adaptability or versatility
If a touch screen panel is coupled with an LCD panel, then touch sensing function is added, but light utilization efficiency is reduced due to light interference
Solution Approach 1:
The patent addresses light interference by structuring the sensor substrate with layered arrangements where transparent conductive layers and color filter layers are positioned at different vertical dimensions. This dimensional arrangement allows light to pass through certain layers while blocking others, optimizing light transmission to the liquid crystal layer while maintaining touch sensing functionality.
3Measurement precision
If the sensor substrate uses transparent conductive layers and mesh-type line arrangements, then touch sensing sensitivity is improved, but manufacturing complexity increases
Solution Approach 1:
The sensor substrate is divided into multiple functional layers including a base substrate, transparent conductive layers, color filter layers, and protective layers. Each layer is manufactured separately using standard semiconductor fabrication processes, and then stacked together. This segmentation allows complex patterns like mesh-type line arrangements to be created in each layer independently, simplifying the overall manufacturing process.
Data Source
AI summary
A sensor substrate includes a blocking pattern disposed on a base substrate, a first electrode disposed on the base substrate and overlapping the blocking pattern, the first electrode including a plurality of first unit parts arranged in a first direction, each of the first unit parts including a plurality of lines connected to each other in a mesh-type arrangement, a color filter layer disposed on the base substrate, a plurality of contact holes defined in the color filter layer and exposing the first unit parts, and a bridge line between and connected to first unit parts adjacent to each other in the first direction, through the contact holes.