Display Panel Transmission Structure for UV Protection and Bezel Reduction
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Solution Overview
Problem
Display devices with integrated electronic devices such as cameras and sensors face challenges with increased bezel size and design restrictions due to the need for these components to receive light from the front, leading to potential image quality deterioration and gas release when exposed to ultraviolet rays.
Innovation Solution
A display device design that includes a substrate with a display area and a transmission area, featuring a light transmission structure that allows electronic devices to receive light without exposure to the front, utilizing a second organic layer and patterning layer to form a UV barrier, reducing bezel size and preventing gas release and pixel shrinkage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic devices are installed to be exposed to the front for receiving light, then the electronic device can receive light normally, but the bezel size increases and design freedom is restricted
Solution Approach 1:
The electronic device is nested within the display panel structure, specifically positioned in the lower bezel area behind the display surface. The light transmission structure creates a pathway that allows light to pass through the display panel to reach the embedded electronic device, enabling the device to be hidden while still receiving light for normal operation.
2Reliability
If electronic devices are installed in a notch or physical hole in the display area, then the electronic device can receive light from the front, but the display area is reduced and design freedom is restricted
Solution Approach 1:
The electronic device is nested within the display panel structure, specifically positioned in the lower bezel area behind the display surface. The light transmission structure creates a pathway that allows light to pass through the display panel to reach the embedded electronic device, enabling the device to be hidden while still receiving light for normal operation.
3Ease of manufacture
If the display panel structure is simplified without UV barrier, then manufacturing costs are reduced, but gas release and pixel shrinkage occur under UV exposure
Solution Approach 1:
The existing inorganic encapsulation layers (first and second inorganic layers) that are already part of the display panel structure are made to serve a dual function: protecting the organic layer during manufacturing and operation, and acting as a UV barrier to prevent gas release and pixel shrinkage. This eliminates the need for a separate UV barrier layer, maintaining manufacturing simplicity while ensuring UV resistance.
4Reliability
If a separate UV barrier layer is added to prevent gas release and pixel shrinkage, then reliability under UV exposure is improved, but manufacturing complexity and costs increase
Solution Approach 1:
The existing inorganic encapsulation layers (first and second inorganic layers) that are already part of the display panel structure are made to serve a dual function: protecting the organic layer during manufacturing and operation, and acting as a UV barrier to prevent gas release and pixel shrinkage. This eliminates the need for a separate UV barrier layer, maintaining manufacturing simplicity while ensuring UV resistance.
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 design maintains image quality and prevents gas release and pixel shrinkage even under UV exposure, while optimizing manufacturing costs through process optimization and reducing bezel size for enhanced design freedom.
Implementation Method 1
a first inorganic layer... a second inorganic layer... an ultraviolet barrier structure in a transmission area
Implementation Method 2
a light transmission structure which allows an electronic device located below a display panel to normally receive light
Data Source
AI summary
A display device may include a substrate including a display area capable of displaying an image, and an insulating layer on the substrate. The display area may include a first display area with a plurality of emission areas and a transmission area, and a second display area located outside the first display area and with a plurality of emission areas. Each of the plurality of emission areas may include a pixel electrode on the insulating layer, a first organic layer located on the pixel electrode and including an emission layer, and a common electrode on the first organic layer. The transmission area may include a second organic layer on the insulating layer, a patterning layer on the second organic layer, and a residual film located on the patterning layer.