Display Panel Adhesive-Integrated Vibration Module for Slim Audio

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Solution Overview

Problem

Conventional display apparatuses face challenges with space occupation and design limitations due to separate speakers, which can make them thicker and complicate the attachment process of vibration generating modules, leading to potential damage and reduced yield rates.

Innovation Solution

A display panel with a vibration generating module integrated into the adhesive member on a cover substrate, allowing the module to vibrate and output sound or haptic feedback, while being protected and preventing damage during the manufacturing process, thus simplifying the assembly and enhancing the slim and aesthetic design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a separate speaker is installed in a display apparatus, then sound output function is provided, but the speaker occupies space and limits design and spatial disposition

Engineering Contradiction:
Improvesound output functionVSAvoidspace occupation
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent combines the vibration generating module (speaker) with the adhesive member that bonds the cover substrate to the display substrate. The vibration generating module is integrated into the adhesive member, allowing the speaker function to be provided without occupying additional space in the display apparatus, as the adhesive member itself becomes part of the sound generation system.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If an actuator including magnet and coil is applied for speaker function, then sound output is achieved, but the display apparatus becomes relatively thick

Engineering Contradiction:
Improvesound output functionVSAvoidthickness
Core Design Contradiction:
Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The vibration generating module is merged with the adhesive member, eliminating the need for separate thick speaker components. The adhesive member serves dual purposes: bonding the substrates and housing the vibration generating module, thereby reducing the overall thickness of the display apparatus while maintaining sound output functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The vibration generating module is nested within the adhesive member, which itself is positioned between the cover substrate and display substrate. This nested arrangement allows the speaker components to be housed within the existing structural layers without adding external thickness to the display apparatus.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Adaptability or versatility

If vibration generating module is attached on outer portion of display panel after manufacturing, then sound output function is added, but the module may be damaged and process yield rate is reduced

Engineering Contradiction:
Improvesound output functionVSAvoidprocess yield rate
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The vibration generating module is pre-integrated into the adhesive member during the manufacturing process, before the cover substrate is bonded to the display substrate. This preliminary integration ensures the module is protected during assembly and prevents damage that would occur if the module were attached separately after manufacturing is completed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

By merging the vibration generating module with the adhesive member, the module becomes part of the bonding structure itself. This integration eliminates the need for separate attachment steps that expose the module to damage risks, thereby improving process yield rate and reliability.

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If vibration generating module is attached separately after manufacturing, then sound function is added, but the attachment process is complicated

Engineering Contradiction:
Improvesound output functionVSAvoidattachment process
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The vibration generating module is merged with the adhesive member, transforming a multi-step attachment process into a single integrated bonding operation. The adhesive member simultaneously performs its bonding function and houses the vibration generating module, eliminating separate attachment steps and simplifying the overall manufacturing process.

Inventive Principle:
Principle #5Merging (Combining)

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 integration of the vibration generating module into the adhesive member on the cover substrate enables efficient sound output and haptic feedback, improves the design by reducing thickness, and enhances the assembly process by preventing module damage, resulting in a more reliable and efficient display apparatus.

Implementation Method 1

a vibration generating module within the adhesive member to overlap the display portion, the vibration generating module being surrounded by the second substrate and the adhesive member

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS11910143B2Display panel and display apparatus including the same
Publication Date: 2024.02.20 LG DISPLAY CO LTD
  • US11910143B2 patent drawing
  • US11910143B2 patent drawing
  • US11910143B2 patent drawing

AI summary

Display panel and display apparatus including the same. A display panel includes a first substrate including a display portion configured to display an image, a second substrate attached to the first substrate by an adhesive member, and a vibration generating module within the adhesive member to overlap the display portion. The vibration generating module is surrounded by the second substrate and the adhesive member.