Flexible Touch Display Panel Manufacturing via Mother Substrate Adhesion

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Solution Overview

Problem

The existing manufacturing process for flexible touch display panels is complex and time-consuming, leading to increased manufacturing costs due to the need to adhere and cut multiple flexible touch and display panels separately before bonding them together.

Innovation Solution

A method where a display mother substrate and a flexible touch mother substrate are first adhered together with an adhesive layer, and then cut into separate units, simplifying the process by eliminating the need for repeated adherence of individual display panels to touch panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If flexible touch panels and display panels are manufactured separately and adhered one by one, then each panel can be individually quality-checked and assembled, but the process steps become complex and manufacturing time increases

Engineering Contradiction:

Improvequality check capabilityVSAvoidmanufacturing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent merges the manufacturing processes of display panels and touch panels by adhering their mother substrates together before cutting. This allows both panel types to be processed simultaneously in subsequent steps, reducing the number of separate adherence operations from N (for N panels) to just one operation for the entire batch, thereby significantly reducing manufacturing time while maintaining quality check capabilities.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent performs the adherence action preliminarily at the mother substrate level before the panels are cut into individual units. By adhering the entire display mother substrate to the entire touch mother substrate in advance, the process eliminates the need for repeated adherence operations after cutting, thus reducing manufacturing time and process complexity.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If multiple separate adherence operations are performed for each panel, then individual panel assembly is ensured, but manufacturing cost increases due to complex process steps

Engineering Contradiction:

Improveassembly reliabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple separate adherence operations into a single batch adherence process at the mother substrate level. This merging of operations reduces the total number of adherence steps from N individual operations to one collective operation, thereby reducing manufacturing cost and process complexity while ensuring assembly reliability through the unified adherence process.

Inventive Principle:

Principle #5Merging (Combining)

3Loss of time

If flexible touch mother substrate and display mother substrate are adhered first then cut, then the adherence process is simplified and manufacturing time is reduced, but the adhesive layer must be precisely positioned to avoid overlapping pad sets

Engineering Contradiction:

Improvemanufacturing timeVSAvoidadhesive layer positioning precision

Core Design Contradiction:

Loss of timeVSManufacturing precision

Solution Approach 1:

The patent performs the adherence action preliminarily at the mother substrate level before cutting, which simplifies the process and reduces manufacturing time. The adhesive layer is applied in advance to the entire surface, and subsequent cutting operations separate the panels while maintaining the pre-established adhesive bonds, thereby avoiding the need for precise adhesive positioning around each individual panel's pad sets.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent segments the manufacturing process into two distinct phases: first adhering the entire mother substrates together, then cutting them into individual panels. This segmentation allows the adherence operation to be performed once on large substrates rather than repeatedly on small individual panels, reducing manufacturing time while the cutting phase subsequently creates individual units with properly positioned adhesive layers that do not overlap pad sets.

Inventive Principle:

Principle #1Segmentation

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 approach reduces manufacturing time and costs by streamlining the process steps and eliminating the need for repeated adherence, while maintaining the flexibility and functionality of the touch and display panels.

Implementation Method 1

the flexible touch mother substrate is adhered to the display mother substrate by an adhesive layer

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS10521039B2Method for manufacturing flexible touch display panel

Publication Date: 2019.12.31 HANNSTOUCH SOLUTION

AI summary

A method for manufacturing a flexible touch display panel is provided. First, a display mother substrate including a plurality of first pad sets and a flexible touch mother substrate including a plurality of second pad sets are provided. Next, a plurality of first openings are formed in the display mother substrate, and a plurality of second openings are formed in the flexible touch mother substrate. Then, the flexible touch mother substrate is adhered to the display mother substrate by an adhesive layer, in which each first opening exposes one of the second pad sets respectively, and each second opening exposes one of the first pad sets respectively. Afterward, a cutting process is performed to form a plurality of touch display units.