Liquid Crystal Display Panel Touch Function Integration

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Solution Overview

Problem

Conventional liquid crystal display panels with touch functions require additional flexible printed circuit boards, increasing manufacturing time and cost, and occupying display area with fan-out lines.

Innovation Solution

Integration of connection units with conductive lines that directly connect readout lines to the signal processor, eliminating the need for additional flexible printed circuit boards and reducing the panel's weight and outline dimension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional flexible printed circuit boards are used to connect readout lines to the signal processor, then the touch function can be implemented, but the manufacturing time and cost increase

Engineering Contradiction:

Improvetouch functionVSAvoidmanufacturing time

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent merges the connection unit with the data driver and integrates conductive lines directly into the data driver structure. This allows readout lines to connect to the signal processor through the existing data driver connection unit, eliminating the need for separate flexible printed circuit boards and reducing manufacturing complexity while maintaining touch functionality

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If additional flexible printed circuit boards are used to connect readout lines to the signal processor, then the touch function can be implemented, but the manufacturing cost increases

Engineering Contradiction:

Improvetouch functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The connection unit is merged with the data driver, and conductive lines are integrated into the data driver structure. This consolidation eliminates the need for separate flexible printed circuit boards, reducing component count and manufacturing cost while preserving the touch detection function

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The data driver connection unit is designed to serve multiple functions: it connects data lines to the data driver and simultaneously provides a pathway for readout lines to reach the signal processor. This multi-functionality eliminates the need for dedicated flexible printed circuit boards, reducing overall manufacturing cost

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If fan-out lines are extended to connect readout lines to the signal processor, then the touch function is enabled, but the display area is reduced

Engineering Contradiction:

Improvetouch functionVSAvoiddisplay area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The connection unit is merged with the data driver, and conductive lines are integrated within the data driver structure. This allows readout lines to be routed through the existing connection infrastructure without requiring separate fan-out lines that would occupy additional display area

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent routes readout lines through the vertical dimension by integrating them into the data driver connection unit structure, rather than extending them horizontally across the display area. This dimensional reorganization allows touch functionality without sacrificing display real estate

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Reliability

If additional flexible printed circuit boards are used, then the connection between readout lines and signal processor is established, but the panel weight increases

Engineering Contradiction:

ImproveconnectionVSAvoidpanel weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The connection unit is merged with the data driver, eliminating the need for separate flexible printed circuit boards. This consolidation reduces the total material used and decreases panel weight while maintaining reliable electrical connection between readout lines and the signal processor

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8427622B2Liquid crystal display panel having a touch function

Publication Date: 2013.04.23 HANNSTAR DISPLAY CORP

AI summary

A liquid crystal display panel includes a lower substrate, a printed circuit board, at least one connection unit and a plurality of readout lines. The connection unit is adapted to connect the printed circuit board to a periphery region of the lower substrate, and has a driver. The readout lines are extended from the lower substrate to the printed circuit board through the connection unit having the driver.