Display Panel Protective Layer Layout for Crosstalk Isolation
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Solution Overview
Problem
Existing display panel manufacturing methods face challenges in providing a convenient, useful, and reliable display panel due to issues such as damage during manufacturing, crosstalk between light-emitting devices, and inefficiencies in forming gaps and layers.
Innovation Solution
The display panel incorporates a first and second light-emitting device protected by protective layers, with specific materials and gaps to prevent damage and crosstalk, and uses hard masks for precise layer removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective layers are added to protect light-emitting devices during manufacturing, then reliability is improved, but device complexity increases
Solution Approach 1:
Protective layers are formed over the light-emitting devices before subsequent manufacturing steps are performed. This preliminary protection prevents damage during handling and processing, allowing the devices to be protected in advance before any potential harmful actions occur.
Solution Approach 2:
The protective layers act as intermediary structures between the light-emitting devices and the external environment or subsequent processing steps. These layers mediate the interaction by providing a barrier that prevents direct contact between potentially damaging elements and the sensitive light-emitting devices.
2Object-generated harmful factors
If gaps are formed between light-emitting devices to prevent crosstalk, then crosstalk is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The continuous protective layer is segmented into discrete protective layers for each light-emitting device by forming gaps between them. This segmentation is achieved through selective removal of the protective layer material in the regions between devices, creating isolated protective structures that prevent crosstalk while maintaining manufacturing feasibility.
Solution Approach 2:
Material is selectively removed from the protective layer in the regions between light-emitting devices to create gaps. This extraction of material from specific locations achieves the desired separation without requiring precise formation of gaps from scratch, reducing manufacturing precision requirements.
3Reliability
If multiple layers are formed to provide comprehensive protection, then reliability is improved, but ease of manufacture decreases
Solution Approach 1:
Multiple protective layers are formed in a single deposition step, combining what would otherwise be separate manufacturing operations into one unified process. This merging of operations maintains comprehensive protection while improving ease of manufacture by reducing the number of discrete steps required.
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 design results in a highly convenient, useful, and reliable display panel with improved protection against physical and chemical loads, reduced crosstalk, and efficient layer formation.
Implementation Method 1
The first layer includes a first material having a hole-transport property
Implementation Method 2
a first substance having an electron-accepting property
Implementation Method 3
improved protection against physical and chemical loads
Implementation Method 4
The second layer includes a first gap between the second layer and the first layer. The second protective layer includes a second gap between the second protective layer and the first protective layer
Data Source
AI summary
A novel display panel that is highly convenient, useful, or reliable is provided. The display panel includes a first light-emitting device, a second light-emitting device, a partition, a first protective layer, and a second protective layer. The first light-emitting device includes a first electrode, a second electrode, and a first layer, and the first layer is interposed between the electrodes. The first layer includes a first material having a hole-transport property and a first substance having an electron-accepting property, and the first protective layer is in contact with the second electrode. The second light-emitting device includes a third electrode, a fourth electrode, and a second layer, and the second layer is interposed between the electrodes. The second layer includes the first material having a hole-transport property and the first substance having an electron-accepting property, and the second layer includes a first gap between the second layer and the first layer. The second protective layer includes a second gap between the second protective layer and the first protective layer. The second gap overlaps with the first gap, and the second protective layer is in contact with the fourth electrode. The partition overlaps with the first gap and the second gap.