Display Panel Topography-Matching Layer for Uniform Sealing
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Solution Overview
Problem
Traditional large-size display panels with splicing gaps result in image distortion due to uneven topography heights caused by micro light-emitting diodes, making it difficult to seal liquid crystal uniformly.
Innovation Solution
A display panel design featuring a topography imitating layer with structures mimicking the height of light-emitting diodes, surrounded by a sealing glue layer, which includes optical barriers to maintain uniformity and stability during the sealing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If micro light-emitting diodes are installed at the borders of LCD screens to achieve continuous images, then image continuity is improved, but topography height uniformity deteriorates
Solution Approach 1:
The patent uses a topography imitating layer that copies the height profile of micro light-emitting diodes at the border regions. This layer replicates the elevated topography caused by μLEDs without requiring actual μLEDs, thereby maintaining image continuity appearance while achieving uniform topography height for consistent liquid crystal sealing.
2Area of stationary object
If multiple LCD screens are spliced together to achieve large-size display, then display area is improved, but splicing gaps cause image distortion
Solution Approach 1:
The topography imitating layer acts as an intermediary structure between the first and second substrates at the border regions. By creating a height-matched transition zone, it eliminates splicing gaps and prevents image distortion, enabling seamless large-size display through screen splicing.
3Adaptability or versatility
If different topography heights exist at edges with and without micro light-emitting diodes, then device flexibility is improved, but sealing process complexity increases
Solution Approach 1:
The topography imitating layer is applied locally only to the border regions where micro light-emitting diodes are present. This localized application creates uniform topography height specifically at the sealing-critical border areas while maintaining the original device structure and flexibility in the central display regions.
Data Source
AI summary
A display panel includes a first substrate, a second substrate, a topography imitating layer, a sealing glue layer and a liquid crystal layer. The first substrate has a first display area and a second display area, in which a plurality of light-emitting diodes (LED) are disposed in the second display area. The second substrate is located on the first substrate. The topography imitating layer is located between the first substrate and the second substrate and has a first portion, in which the first portion of the topography imitating layer is located in the second display area. A height of the topography imitating layer is substantially the same as a height of the LEDs, and the first portion of the topography imitating layer is at least adjacent to a first edge of the first substrate. The sealing glue layer covers the topography imitating layer and the LEDs.