Transparent Display Substrate Layout for Low-Reflection Light Transmission
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Solution Overview
Problem
Current transparent displays face challenges in achieving high light transmittance and display quality due to the reflection and light color mixing issues caused by the metal conductive layers and insulating layers, which affect the overall visibility and performance.
Innovation Solution
A display substrate design featuring a base substrate with sub-pixels that include a light transmittance region and a display region, where the insulating layers are strategically hollowed out in the light transmittance region, and anti-reflection layers are used to minimize reflection and enhance display quality, incorporating organic and inorganic insulating layers with controlled refractive index differences and anti-reflection layers to prevent light color mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal conductive layers and insulating layers are used in transparent displays, then device functionality and structural integrity are improved, but light reflection and color mixing increase, reducing visibility and display quality
Solution Approach 1:
The patent extracts and removes the harmful insulating layers from the light transmittance region while preserving them in the display region. This selective removal eliminates the harmful reflection and color mixing effects in the transparent area while maintaining the necessary insulating function in the display area where pixels are formed.
Solution Approach 2:
The patent applies different structural configurations to different regions of the substrate. The light transmittance region has hollowed-out insulating layers for maximum transparency, while the display region maintains complete insulating layers for proper pixel formation and electrical insulation. This local differentiation resolves the contradiction between transparency and functionality.
2Reliability
If insulating layers are present in the light transmittance region, then electrical insulation is maintained, but light transmittance is reduced due to reflection and interference
Solution Approach 1:
The patent segments the insulating layers into different configurations based on spatial location. In the light transmittance region, insulating layers are hollowed out or partially removed to allow light passage. In the display region, insulating layers remain complete to provide electrical insulation. This segmentation allows both light transmittance and electrical insulation to coexist in different areas of the same device.
3Stability of the object's composition
If multiple insulating layers are used to ensure proper device structure, then manufacturing robustness is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies partial action by selectively hollowing out only the necessary portions of the insulating layers in the light transmittance region, while maintaining the full multi-layer structure in the display region. This approach preserves structural integrity where needed while reducing complexity and improving transparency where required, avoiding the need to simplify the entire device structure.
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
The solution improves light transmittance and display quality by reducing reflection and light color mixing, allowing for clearer visibility through the display while maintaining high display performance, with the hollowed-out insulating layers and anti-reflection layers effectively addressing the existing issues.
Implementation Method 1
a first anti-reflection layer located on a side of the circuit structure layer close to the base substrate and a second anti-reflection layer located on a side of the circuit structure layer away from the base substrate
Implementation Method 2
an absolute value of a refractive index difference between adjacent insulating layers in the plurality of insulating layers is less than or equal to 0.5
Data Source
AI summary
A display substrate is provided, which includes a base substrate and a plurality of sub-pixels disposed on the base substrate. At least one sub-pixel includes a light transmittance region and a display region. The display region includes a circuit structure layer and a light-emitting element which are disposed on a base substrate, and the light-emitting element is connected with the circuit structure layer. The display substrate further includes a plurality of insulating layers disposed on the base substrate, and at least one insulating layer is hollowed in the light transmittance region.