Touch-Sensing LCD Panel with Electrodes on Polarization Plate

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Solution Overview

Problem

The existing touch-sensing liquid crystal display panels are limited by the thickness and weight of individual components, leading to increased manufacturing costs due to the need for separate assembly and the use of transparent substrates for patterned sensing electrodes.

Innovation Solution

Directly forming patterned sensing electrode layers on the surface of a polarization plate, which serves as a substrate, eliminating the need for additional transparent substrates and reducing the overall thickness and weight of the touch-sensing liquid crystal display panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If patterned sensing electrode layers are formed on separate transparent substrates and then assembled with the liquid crystal display panel, then the touch sensing function is achieved, but the thickness and weight of the final product increase

Engineering Contradiction:

Improvetouch sensing functionVSAvoidthickness of display panel

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the touch-sensing panel and liquid crystal display panel into a single integrated structure. The sensing electrode layers are formed directly on the polarization plate that is already part of the LCD panel, eliminating the need for separate assembly of two distinct panels. This integration maintains touch sensing functionality while reducing overall thickness by removing redundant substrate layers and adhesive materials.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The polarization plate serves multiple functions: it acts as both the polarization element for the liquid crystal display and as the substrate for forming the sensing electrode layers. This multi-functionality eliminates the need for a separate transparent substrate specifically for the touch-sensing panel, thereby reducing thickness and weight while maintaining both display and touch sensing capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Strength

If separate transparent substrates are used for the patterned sensing electrode layer, then the sensing electrodes are properly supported, but the weight of the display panel increases

Engineering Contradiction:

Improvestructural support for sensing electrodesVSAvoidweight of display panel

Core Design Contradiction:

StrengthVSWeight of stationary object

Solution Approach 1:

The patent combines the substrate function with the polarization plate, which is already a necessary component of the liquid crystal display panel. By forming sensing electrodes directly on the polarization plate, the structure eliminates redundant substrate layers, thereby reducing weight while maintaining structural support for the sensing electrodes through the polarization plate itself.

Inventive Principle:

Principle #5Merging (Combining)

3Strength

If separate transparent substrates are used for the patterned sensing electrode layer, then the sensing electrodes are properly supported, but the manufacturing cost increases

Engineering Contradiction:

Improvestructural support for sensing electrodesVSAvoidmanufacturing cost

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent merges the substrate and polarization plate into a single component, eliminating the need for separate manufacturing and assembly processes for distinct substrates. This integration reduces the number of manufacturing steps, materials required, and assembly operations, thereby decreasing manufacturing cost while maintaining proper structural support for sensing electrodes.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the substrate function from a separate component and integrates it into the polarization plate. This eliminates the need for a dedicated transparent substrate for the touch-sensing panel, reducing material costs and simplifying the manufacturing process while still providing necessary structural support for the sensing electrodes.

Inventive Principle:

Principle #2Taking out (Extraction)

4Reliability

If multiple separate components are assembled to form the touch-sensing liquid crystal display panel, then the functional requirements are met, but the device complexity increases

Engineering Contradiction:

Improvefunctional requirementsVSAvoidassembly structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the touch-sensing panel and liquid crystal display panel into a single integrated structure, reducing the number of separate components that need to be assembled. The sensing electrode layers are formed directly on the polarization plate within the LCD panel structure, eliminating the need for separate assembly of distinct panels and reducing overall device complexity while maintaining all necessary functional requirements.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9921674B2Touch-sensing liquid crystal display panel

Publication Date: 2018.03.20 HANNSTOUCH SOLUTION

AI summary

The present invention provides a touch-sensing panel including a polarization plate and a patterned sensing electrode layer. The polarization plate has a first surface and a second surface, and the first surface and the second surface are disposed opposite to each other. The first patterned sensing electrode layer is disposed on the first surface, and the first patterned sensing electrode layer is directly attached on the first surface of the polarization plate.