Display Panel With Segmented Cathodes For Local Light Transmittance
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Solution Overview
Problem
Existing display panels face challenges in achieving improved overall display quality, particularly in areas where electronic modules are located, due to limitations in light transmittance and pixel density.
Innovation Solution
A display panel design that includes a display area with a first area having a specific light transmittance and a second area adjacent to it with a higher light transmittance. This design features first and second pixels with different cathodes and power supply voltages, along with a cathode insulation layer and power auxiliary lines, to optimize light emission and transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform light transmittance is used across the entire display area, then the manufacturing process is simple, but the display quality in areas with electronic modules is insufficient
Solution Approach 1:
The patent applies local quality by dividing the display area into a first area and a second area with different light transmittance values. The first area has a lower light transmittance while the second area has a higher light transmittance, allowing each region to be optimized for its specific function. This resolves the contradiction by enabling improved display quality in the second area where electronic modules are located without compromising the simplicity of the overall manufacturing process.
2Use of energy by moving object
If the same cathode structure is used across all pixels, then the manufacturing process is simplified, but the power consumption cannot be optimized for different display areas
Solution Approach 1:
The patent implements local quality by providing different cathode structures for first pixels and second pixels. The first pixels have a first cathode while the second pixels have a second cathode with different electrical characteristics. This allows optimization of power consumption for each display area, with the second cathode being specifically designed for the second area with higher light transmittance, while increasing structural complexity only where necessary.
Solution Approach 2:
The patent applies segmentation by dividing the cathode structure into separate first cathodes and second cathodes corresponding to different pixel types and display areas. This segmentation enables independent optimization of power consumption for each area while maintaining overall system functionality, resolving the contradiction between energy efficiency and structural simplicity.
3Adaptability or versatility
If electronic modules are located in the display area, then the device functionality is enhanced, but the light transmittance and display quality are compromised
Solution Approach 1:
The patent resolves this contradiction by applying local quality through differentiated light transmittance values in different display areas. The second area, which accommodates electronic modules, has a higher light transmittance value optimized for both module functionality and display quality. This allows electronic modules to be integrated without compromising overall display performance, as each area is optimized for its specific requirements.
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 proposed solution enhances the display quality by improving the sharpness difference between the first and second display areas, leading to better overall display performance and reduced power consumption.
Implementation Method 1
A first light emitting element LD1 located in the first display area DA1 and having a first anode electrode AE1 and a first cathode electrode CCE1, and a second light emitting element LD2 located in the second display area DA2 and having a second anode electrode AE2 and a second cathode electrode CCE2. The first light emitting element LD1 emits light in response to a first voltage difference between the first anode electrode AE1 and the first cathode electrode CCE1, and the second light emitting element LD2 emits light in response to a second voltage difference between the second anode electrode AE2 and the second cathode electrode CCE2.
Data Source
AI summary
A display panel includes: a display area comprising a first area having a first light transmittance, and a second area having a second light transmittance higher than the first light transmittance; a plurality of first pixels, each of which is configured to provide the first area with light and comprises a first cathode; a plurality of second pixels configured to provide the second area with light, and including a second cathode overlapping the first cathode in a plan view and electrically insulated from the first cathode; a first power part connected to the first cathode and configured to supply a first power voltage to the first cathode; a second power part connected to the second cathode and configured to supply a second power voltage different from the first power voltage to the second cathode; and a cathode insulation layer between the first cathode and the second cathode.