Integrated Window Panel for Flexible OLED Displays

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Solution Overview

Problem

The challenge in manufacturing organic light emitting display devices is the increased thickness and radius of curvature due to multiple adhesive layers, which limits their flexibility and thin-type design.

Innovation Solution

The solution involves a window panel with a light absorption layer, touch sensor, and edge layer stacked on a window substrate without additional adhesives, reducing the number of adhesive layers and manufacturing processes, and incorporating a décor layer between the edge layer and the window substrate in the non-display area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If multiple adhesive layers are used to assemble the window panel components, then the components can be separately manufactured and assembled, but the thickness of the organic light emitting display device increases

Engineering Contradiction:

Improveease of manufactureVSAvoidthickness

Core Design Contradiction:

Ease of manufactureVSLength of stationary object

Solution Approach 1:

The patent merges multiple separate components (lower film, touch sensor, polarizing film) into a single integrated window panel structure that is manufactured as one piece rather than being assembled from separate components requiring multiple adhesive layers

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent removes the adhesive layers from the structure by integrating all functional layers directly onto the window substrate without requiring separate bonding operations

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of manufacture

If multiple adhesive layers are used to assemble the window panel components, then the components can be separately manufactured and assembled, but the radius of curvature increases

Engineering Contradiction:

Improveease of manufactureVSAvoidradius of curvature

Core Design Contradiction:

Ease of manufactureVSShape

Solution Approach 1:

The patent combines all window panel components into a single integrated structure with reduced overall thickness, enabling smaller radius of curvature and improved flexibility

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated window panel structure with reduced thickness allows the display device to achieve flexible forms with small radius of curvature

Inventive Principle:

Principle #30Flexible shells and thin films

3Ease of manufacture

If additional adhesive layers are required for assembling window panel components, then separate manufacturing of components is enabled, but the device complexity increases

Engineering Contradiction:

Improveease of manufactureVSAvoiddevice complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent consolidates multiple manufacturing processes and components into a single integrated window panel manufacturing process, reducing the number of assembly steps and adhesive applications required

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9991317B2Organic light emitting display device and manufacturing method thereof

Publication Date: 2018.06.05 SAMSUNG DISPLAY CO LTD

AI summary

An organic light emitting display device includes: a display panel configured to display an image; and a window panel on the display panel, the window panel having a display area for transmitting an image displayed on the display panel and a non-display area surrounding the display area. The window panel may include: a window substrate; a light absorption layer on the window substrate; a touch sensor in the display area; and an edge layer in the non-display area.