Liquid Crystal Handwriting Panel Touch Electrode Positioning
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Solution Overview
Problem
Existing liquid crystal handwriting panels with integrated infrared positioning devices suffer from increased thickness and reduced screen-to-body ratio, compromising their functionality and user experience.
Innovation Solution
The proposed liquid crystal handwriting panel eliminates the need for an infrared positioning device by incorporating a touch electrode layer on the first substrate, which determines the position of external objects, allowing for effective writing and erasing modes without increasing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an infrared positioning device is integrated into the liquid crystal handwriting panel, then positioning functionality is improved, but the panel thickness increases and screen-to-body ratio decreases
Solution Approach 1:
The patent merges the positioning function with the existing touch electrode layer by using the same electrode structure for both touch detection and positioning purposes. The touch electrode layer is configured to detect both touch events and positioning information, eliminating the need for a separate infrared positioning device and thereby reducing panel thickness while maintaining positioning functionality.
Solution Approach 2:
The touch electrode layer is designed to serve multiple functions: it acts as both a touch detection electrode and a positioning electrode. By making the touch electrode layer multi-functional, the patent eliminates the need for separate positioning hardware, thus reducing panel thickness and improving screen-to-body ratio while maintaining positioning capabilities.
2Measurement precision
If an infrared positioning device is integrated into the liquid crystal handwriting panel, then positioning functionality is improved, but the screen-to-body ratio decreases
Solution Approach 1:
The patent merges the positioning function with the existing touch electrode layer by using the same electrode structure for both touch detection and positioning purposes. The touch electrode layer is configured to detect both touch events and positioning information, eliminating the need for a separate infrared positioning device and thereby reducing panel thickness and improving screen-to-body ratio while maintaining positioning functionality.
Solution Approach 2:
The touch electrode layer is designed to serve multiple functions: it acts as both a touch detection electrode and a positioning electrode. By making the touch electrode layer multi-functional, the patent eliminates the need for separate positioning hardware, thus reducing panel thickness and improving screen-to-body ratio while maintaining positioning capabilities.
3Measurement precision
If a touch electrode layer is added to the first substrate, then positioning capability is improved and infrared device is eliminated, but device complexity increases
Solution Approach 1:
The patent merges the positioning function with the existing touch electrode layer by using the same electrode structure for both touch detection and positioning purposes. This integration approach actually reduces device complexity compared to adding a separate infrared positioning system, as it utilizes existing structural elements for multiple functions.
Solution Approach 2:
The touch electrode layer is designed to serve multiple functions: it acts as both a touch detection electrode and a positioning electrode. By making the touch electrode layer multi-functional, the patent eliminates the need for separate positioning hardware, thus reducing overall device complexity while maintaining positioning capabilities.
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 reduces the thickness of the liquid crystal handwriting panel and improves the screen-to-body ratio, enhancing the panel's functionality and user experience while maintaining the ability to save and erase handwriting.
Implementation Method 1
a liquid crystal layer between the first substrate and the second substrate
Implementation Method 2
a touch electrode layer on a side, close to the second substrate, of the first base substrate, wherein the touch electrode layer is used for determining a position of an external object
Data Source
AI summary
Provided is a liquid crystal handwriting panel. The liquid crystal handwriting panel includes: a first substrate and a second substrate that are opposite to each other, and a liquid crystal layer between the first substrate and the second substrate; wherein the first substrate includes: a first base substrate, a touch electrode layer on a side of the first base substrate, and a first drive electrode layer on a side of the first base substrate; the second substrate includes: a second base substrate, a second drive electrode layer on a side of the second base substrate, and a shielding layer on a side of the second base substrate.