Light-Transmissive Display Panel Layout for Higher Pixel Density
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Solution Overview
Problem
The display effect of light-transmissive display regions in display devices is poor due to a limited number of connection lines and light-emitting devices, which affects the transmittance and overall display performance.
Innovation Solution
The display panel design includes a light-transmissive region surrounded by a conventional display region, with pixel drive circuits in the conventional region driving light-emitting devices in the light-transmissive region through multiple layers of connection lines and via holes, increasing the number of connection lines and light-emitting devices, and using light-transmissive conductive materials for improved transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If connection lines and light-emitting devices are increased in the light-transmissive display region, then display effect and transmittance are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extends connection lines from the conventional display region into the light-transmissive display region, utilizing the spatial dimension to increase the number of connection lines and light-emitting devices without adding lateral complexity. This dimensional extension allows more components to be arranged in the light-transmissive region while maintaining manufacturing feasibility.
Solution Approach 2:
The display region is divided into a conventional display region and a light-transmissive display region, with pixel drive circuits located in the conventional region and connection lines extending into the light-transmissive region. This segmentation allows independent optimization of each region, enabling increased component density in the light-transmissive area without compromising the overall device structure.
2Productivity
If connection lines extend into the light-transmissive display region, then the number of connection lines increases improving display performance, but transmittance may be reduced due to additional conductive materials
Solution Approach 1:
The patent applies different material properties to different regions: light-transmissive conductive materials are used specifically in the light-transmissive display region where transmittance is critical, while conventional conductive materials can be used in the conventional display region. This local quality differentiation allows connection lines to extend into the light-transmissive region without significantly compromising transmittance.
Solution Approach 2:
The patent employs composite material structures, particularly using light-transmissive conductive materials (such as transparent conductive oxides) for connection lines in the light-transmissive display region. These composite materials provide both electrical conductivity and optical transmittance, resolving the contradiction between increasing connection lines and maintaining transmittance.
Data Source
AI summary
Provided is a display panel, including: a substrate, a connection line, a first pixel drive circuit, a first insulative layer, and first light-emitting devices. The substrate includes a light-transmissive display region and a conventional display region at least partially surrounding the light-transmissive display region. The connection line and the first pixel drive circuit are disposed on the substrate. The connection line is electrically connected to the first pixel drive circuit. The first pixel drive circuit is disposed in the conventional display region. The first insulative layer is disposed on a side, distal from the substrate, of the connection line and is provided with first via holes arranged in arrays. The first light-emitting devices are disposed on a side, distal from the substrate, of the first insulative layer and arranged in arrays in the light-transmissive display region and electrically connected to the connection lines via the first via holes.