Wire-Grid Touch Polarizer for Display Thickness Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional touch display devices face issues with light efficiency and thickness due to the independent structure of touch panels and polarizers, leading to suboptimal brightness and contrast.
Innovation Solution
An integrated touch display device design incorporating a wire-grid electrode layer and a touch circuit, which combines touch sensing and polarizing functions, reducing thickness and enhancing transmittance by using a metal polarizer module with a wire-grid electrode layer and a transparent electrode layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional polarizer is used, then light polarization is achieved, but light efficiency deteriorates due to blocking at least half of backlight
Solution Approach 1:
The patent merges the polarizer and touch panel into a single integrated structure where the wire-grid electrode layer of the touch panel serves dual functions as both the touch sensing electrode and the polarizing layer, eliminating the need for separate polarizer components and reducing overall light loss
Solution Approach 2:
The wire-grid electrode layer is designed to perform multiple functions simultaneously: it acts as the transparent electrode for touch sensing and as the polarizer for light control, allowing one component to fulfill multiple roles and improve overall system efficiency
2Illumination intensity
If a dual brightness enhancement film is added, then light efficiency is improved by reflecting and reusing backlight, but device thickness increases
Solution Approach 1:
The patent combines the polarizer and touch panel into a single integrated layer, eliminating the need for additional brightness enhancement films and other separate components, thereby reducing overall device thickness while maintaining light efficiency
Solution Approach 2:
The integrated wire-grid electrode layer performs multiple functions including touch sensing, polarization, and light management, replacing what would traditionally require multiple separate components and reducing the need for thickness-increasing enhancement films
3Ease of operation
If traditional polarizer structure is combined with touch display device, then touch functionality is achieved, but device thickness remains non-ideal
Solution Approach 1:
The patent merges the polarizer and touch panel into a single integrated structure where the wire-grid electrode layer serves both as the touch sensing element and the polarizing layer, eliminating the need for separate polarizer components and reducing overall device thickness
Solution Approach 2:
The wire-grid electrode layer is designed to perform multiple functions simultaneously: it acts as the transparent electrode for touch sensing and as the polarizer for light control, allowing one component to fulfill multiple roles and reduce device thickness
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 integrated design reduces the overall thickness of the touch display device while improving light transmittance and optical performance by allowing specific polarized light to pass through and reducing ambient light reflection.
Implementation Method 1
The wire-grid electrode layer includes a plurality of wires arranged parallel to each other and spaced to form a wire-grid... allows specific polarized light to pass through
Data Source
AI summary
A touch polarizer and a touch display device are provided. The touch polarizer includes a first substrate, a transparent electrode layer, a wire-grid electrode layer, and a touch circuit. The transparent electrode layer is disposed on the first substrate. The wire-grid electrode layer is disposed on one side of the transparent electrode layer and includes a plurality of wires arranged parallel to each other and spaced to form a wire-grid. The touch circuit respectively connects to the transparent electrode layer and the plurality of wires and generates a touch signal based on a feedback from the transparent electrode layer and the wire-grid electrode layer.