Flexible OLED Module Buffer Layer Impact Protection

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Solution Overview

Problem

Flexible OLED displays in mobile devices have poor impact resistance due to the use of thin, flexible cover plates, which are not suitable for withstanding impacts like falling balls, unlike traditional LCDs or rigid OLEDs.

Innovation Solution

A flexible OLED mobile phone module design featuring a mid-frame, a flexible OLED panel attached to it, a back cover connected to the mid-frame, and a buffer layer between the mid-frame and the back cover, where the buffer layer, typically a rubber gasket, absorbs impact forces to prevent sharp impacts between the mid-frame and back cover.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a thin flexible cover plate is used to enable bending, then flexibility is improved, but impact resistance deteriorates

Engineering Contradiction:

ImproveflexibilityVSAvoidimpact resistance

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

A buffer layer is disposed between the mid-frame and the back cover to absorb impact forces before they reach the flexible OLED panel. This pre-positioned cushioning layer protects the display from direct impact, resolving the contradiction between using thin flexible cover plates for bending capability and maintaining impact resistance.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If a buffer layer is added to absorb impact, then impact resistance is improved, but device complexity increases

Engineering Contradiction:

Improveimpact resistanceVSAvoidstructure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The buffer layer is implemented as a thin film or flexible gasket material that can be easily integrated between the mid-frame and back cover. This approach provides effective impact absorption while maintaining a simple, thin-profile structure that does not significantly increase device complexity.

Inventive Principle:

Principle #30Flexible shells and thin films

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 buffer layer effectively absorbs impact energy, enhancing the impact resistance of the flexible OLED mobile phone module by reducing stress on the OLED panel and preventing sharp impacts, thus protecting the display.

Implementation Method 1

the buffer layer is configured to absorb an impact force exerted on the flexible OLED panel

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11394816B2Flexible organic light-emitting diode mobile phone module

Publication Date: 2022.07.19 WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD

AI summary

A flexible organic light-emitting diode (OLED) mobile phone module of the present disclosure is provided, including a mid-frame, a flexible OLED panel attached to the mid-frame, a back cover connected to the mid-frame, and a buffer layer disposed between the mid-frame and the back cover. The buffer layer is configured to absorb an impact force exerted on the flexible OLED panel. When the flexible OLED panel is impacted by a steel ball or the like, the impact force can be transmitted to the buffer layer through the mid-frame, and the buffer layer can absorb most of energy, so that no sharp impact occurs between the mid-frame and the back cover, thereby protecting the flexible OLED panel and improving impact resistance of the flexible OLED mobile phone module.