Under-Display Optical Area Blocking Layers Against Light Interference
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Solution Overview
Problem
As the bezel of a display device is reduced, it becomes challenging to dispose an optical device in the bezel area without compromising the screen-to-body ratio and display quality, particularly due to light interference around the optical device.
Innovation Solution
The display device incorporates a substrate with a display area and a transmissive area, featuring a first blocking layer on one surface and a second blocking layer on the opposite surface, along with an insulation layer, transistor, and light emitting element, to prevent light interference and maintain display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel size is reduced to increase screen-to-body ratio, then the display area is increased, but the optical device cannot be properly disposed and light interference occurs
Solution Approach 1:
The patent introduces blocking layers at multiple dimensional levels: front blocking layers on the display surface, rear blocking layers on the opposite surface, and side blocking layers at the edges. This multi-dimensional blocking approach prevents light from entering the optical device from various directions, resolving the light interference problem while maintaining the reduced bezel design
Solution Approach 2:
The blocking structure is divided into multiple segmented layers: front blocking layers (first and second blocking layers), rear blocking layers (third and fourth blocking layers), and side blocking layers. Each segment addresses light interference from specific directions, collectively solving the overall light leakage problem around the optical device
2Productivity
If the optical device is disposed in the screen area, then the screen-to-body ratio is increased, but light incident around the optical device degrades display quality
Solution Approach 1:
The blocking layers are positioned in advance around the optical device to prevent light from reaching it. The front blocking layers are disposed before light can enter from the display surface, and rear blocking layers prevent light from the opposite surface, thereby preemptively blocking harmful light paths before interference can occur
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 configuration effectively prevents the degradation of display quality due to light introduced around the optical device, ensuring improved visibility and performance even with reduced bezel sizes.
Implementation Method 1
a first blocking layer that is disposed on the display area of the substrate... a second blocking layer that is disposed in the display area of the substrate... to prevent the visibility of the optical device from being lowered by light incident around the optical device
Data Source
AI summary
A display device includes a substrate that includes a display area and a transmissive area, a first blocking layer that is disposed on the display area of the substrate, and disposed on a first surface of the substrate, a second blocking layer that is disposed in the display area of the substrate, and disposed on a second surface of the substrate opposite to the first surface, an insulation layer that is disposed on the first blocking layer, a transistor that is disposed on the insulation layer, and a light emitting element that is connected to the transistor.