Display Sensor Mounting Opening Sealing Structure
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Solution Overview
Problem
The challenge of mounting sensors in the active area of a display panel without exposing light emitting elements and circuits to oxygen or moisture, which are vulnerable to damage.
Innovation Solution
A display design that includes a sensor mounting part with an opening through the organic light emitting layer, thin film transistor array layer, and display substrate layer, sealed by a sealing member to prevent exposure, and a thin film encapsulation layer to protect against moisture and oxygen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a hole is formed in the display panel to mount a sensor in the active area, then the sensor can be integrated in the active area expanding display visibility, but light emitting elements and circuits become exposed to oxygen or moisture causing vulnerability to damage
Solution Approach 1:
The patent implements a multi-layer nested structure where the opening passes through multiple layers (substrate, TFT array layer, organic light emitting layer) and each layer provides sequential protection. The sealing member is nested within the opening to seal the exposed portions, creating a protected cavity that houses the sensor while maintaining display functionality.
Solution Approach 2:
The patent uses thin film encapsulation layers and sealing members to create a protective barrier over the exposed light emitting elements and circuits. These thin film structures conform to the opening geometry and provide moisture and oxygen protection while allowing the sensor to function in the active area.
2Area of stationary object
If the entire front side is utilized as display area by eliminating bezel area, then user visibility is maximized, but sensor mounting becomes more difficult as sensors must be placed in active area requiring holes through display layers
Solution Approach 1:
The patent divides the display panel into distinct functional layers (substrate layer, TFT array layer, organic light emitting layer) and creates a segmented opening that passes through these layers. This segmentation allows the sensor to be mounted in the active area while maintaining the integrity and functionality of each display layer separately.
Solution Approach 2:
The patent introduces a sealing member as an intermediary element that fills the opening and seals the exposed portions of the light emitting elements and circuits. This sealing member acts as a mediator between the sensor mounting requirement and the protection requirement, enabling sensor integration without compromising display manufacturing feasibility.
3Adaptability or versatility
If openings are formed through multiple display layers to mount sensor, then sensor integration is achieved, but manufacturing complexity increases due to multiple layers requiring penetration and sealing
Solution Approach 1:
The patent combines the sensor mounting function with the display structure by integrating the opening and sealing mechanisms directly into the existing display layers. The sealing member is formed as part of the display assembly process, merging the sensor integration requirement with the display manufacturing process rather than adding separate complex systems.
Solution Approach 2:
The opening structure and sealing member serve multiple functions: they enable sensor mounting in the active area, protect exposed light emitting elements from moisture and oxygen, and maintain the structural integrity of the display panel. This multi-functionality reduces the need for additional separate components and simplifies the overall device complexity.
Data Source
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AI summary
A display is provided. The display includes a display substrate layer, an organic light emitting layer that is formed over the display substrate layer and that includes a plurality of pixels, a thin film transistor array layer that is disposed between the display substrate layer and the organic light emitting layer and that includes a plurality of thin film transistors electrically connected with the pixels, a thin film encapsulation layer formed on at least part of the organic light emitting layer, a sensor mounting part including an opening formed through the organic light emitting layer, the thin film transistor array layer, and the display substrate layer and a sensor disposed in the opening, and a sealing member formed in the opening to prevent the organic light emitting layer and the thin film transistor array layer from being exposed to the outside through an inner sidewall of the opening. The opening includes a first portion formed in the display substrate layer and a second portion formed in the remainder, and the sealing member is formed in the second portion and at least part of the first portion.