Display Panel Light-Shielding Layout to Prevent Material Overflow
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Solution Overview
Problem
Current display panel technologies face challenges in effectively reducing reflectivity and improving light-shielding due to immature light-shielding material preparation techniques, which affect the performance of light-emitting elements and lead to issues like halo and crosstalk.
Innovation Solution
A display panel design that includes a light-shielding layer in the display region and a bank in the non-display region, where the bank is formed before the light-shielding material is filled, preventing overflow and ensuring the light-shielding material is confined to the display region, and using a light-transmissive material for the bank to enhance light transmittance and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If light-shielding material is provided in the display region to reduce reflectivity, then light-shielding effect is improved, but material overflow occurs during preparation
Solution Approach 1:
The bank structure is formed in advance before the light-shielding material is deposited. This preliminary action creates physical boundaries that confine the material during subsequent preparation processes, preventing overflow while allowing the light-shielding layer to be effectively formed in the display region
Solution Approach 2:
The bank acts as an intermediary structure between the display region and non-display region. It provides a physical barrier that mediates the material deposition process, enabling controlled confinement of light-shielding material without directly affecting the optical properties of the display region
2Adaptability or versatility
If multiple routings are used for light-shielding material preparation, then flexibility is improved, but preparation effect deteriorates
Solution Approach 1:
The preparation process is segmented into distinct stages: first forming the bank structure, then depositing the light-shielding material. This segmentation allows different preparation routings to be used for each stage independently, maintaining flexibility while ensuring the overall preparation effect is improved by the confining bank structure
3Object-affected harmful factors
If light-shielding material covers bottom circuits, then light-shielding is improved, but cutting process becomes difficult
Solution Approach 1:
The bank structure is formed before light-shielding material deposition, creating predetermined boundaries. This preliminary action ensures that material overflow is confined to specific regions between banks, leaving cutting edges accessible and maintaining ease of subsequent cutting processes while still achieving effective light-shielding in the display region
Data Source
AI summary
Provided are a display panel, a manufacturing method thereof, and a display device. The display panel includes a display region and a non-display region. The display panel includes a light-shielding layer and a bank. The light-shielding layer includes a part located in the display region. The bank is located in the non-display region and in contact with the light-shielding layer.