Display Panel Transmission Area Black Lines Dummy Pixels
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Solution Overview
Problem
Display devices face challenges in integrating additional functions and components, such as cameras and sensors, within their structure while maintaining optimal light transmission and display performance.
Innovation Solution
A display panel design featuring a transmission area surrounded by a display area with strategically placed black lines and dummy pixels that do not emit light, allowing for the integration of electronic components like cameras and sensors, while maintaining high light transmittance and efficient pixel arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transmission area is added to the display panel to integrate cameras and sensors, then the functionality and versatility of the display device are improved, but the light transmission performance and display quality may deteriorate due to the interruption of the display area
Solution Approach 1:
The display area is segmented into multiple regions: a first display region adjacent to the transmission area where dummy pixels are arranged, and a second display region where normal pixels are arranged. This segmentation allows the transmission area to be integrated without compromising the overall display performance, as the dummy pixels create a transition zone that maintains light transmission while the normal pixels preserve display quality.
Solution Approach 2:
Different regions of the display panel are assigned different functions and structures. The transmission area allows light to pass through for camera and sensor integration, while the normal pixel regions maintain full display functionality. The dummy pixel region serves as a transition zone with specific optical properties. This local differentiation resolves the contradiction by allowing each region to optimize for its specific purpose.
2Manufacturing precision
If black lines are extended from the transmission area to the edges of the display area to improve manufacturing alignment, then the manufacturing precision is improved, but the display area and pixel arrangement may be restricted
Solution Approach 1:
Instead of extending black lines to all four edges of the display area, the patent applies black lines selectively only to two opposite sides (first and second sides). This partial application provides sufficient alignment reference for the transmission area during manufacturing while minimizing the impact on the display area. The black lines are positioned within the dummy pixel region, ensuring they do not encroach on the normal pixel display regions.
3Illumination intensity
If dummy pixels are arranged around the transmission area to maintain display uniformity, then the display quality is improved, but the pixel density and effective display area are reduced
Solution Approach 1:
Dummy pixels are arranged only in the first display region adjacent to the transmission area, while the second display region contains normal functional pixels. This localized arrangement of dummy pixels maintains display uniformity in the transition zone without reducing the overall pixel density in the main display area. The dummy pixels serve their purpose of creating a gradual transition for light transmission while the normal pixels maximize the effective display area.
Data Source
AI summary
A display panel includes a substrate including a display area and a transmission area arranged in the display area which is surrounded by a first side extending in a first direction, a second side extending in a second direction crossing the first direction, a third side facing the first side, and a fourth side facing the second side, pixels arranged in the display area, a first black line extending from the transmission area to the first side in a third direction different from the second direction and arranged with dummy pixels which do not emit light, and a second black line extending from the transmission area to the second side in a fourth direction different from the first direction and arranged with the dummy pixels which do not emit light, wherein the transmission area is arranged closer to the first and second sides than the third and fourth sides.