Display Pixel Initialization Voltage for Black Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices struggle to achieve desired black luminance in areas with lower resolution due to overlapping camera and sensor components, which affect transmittance and pixel initialization.
Innovation Solution
The display device employs different initialization power sources for first and second pixel areas with varying resolutions, ensuring that the first pixel area with lower resolution receives a lower initialization voltage to achieve the desired black luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the resolution in the overlapping area is designed to be smaller to improve transmittance, then the transmittance is improved, but the desired black luminance cannot be implemented
Solution Approach 1:
The patent applies different initialization voltages to different pixel areas based on their resolution characteristics. Low-resolution pixels (first pixel area) receive a first initialization voltage, while high-resolution pixels (second pixel area) receive a second initialization voltage. This local differentiation allows each area to be optimized for its specific function: high transmittance for low-res areas and proper black luminance for high-res areas.
Solution Approach 2:
The patent changes the initialization voltage parameter based on pixel resolution. By setting the first initialization voltage differently from the second initialization voltage, the system achieves desired black luminance in low-resolution areas while maintaining proper display quality in high-resolution areas. This parameter adjustment resolves the contradiction between transmittance optimization and black luminance requirement.
2Reliability
If different initialization voltages are supplied to different pixel areas, then the desired black luminance is achieved, but the device complexity increases
Solution Approach 1:
The patent segments the pixel array into two distinct areas: a first pixel area with low resolution and a second pixel area with high resolution. Each area is assigned a dedicated initialization voltage from separate initialization power sources. This segmentation allows independent optimization of each area's initialization characteristics, achieving desired black luminance while maintaining manageable system complexity through clear functional division.
Data Source
AI summary
A display device includes a plurality of first pixels disposed in a first pixel area and initialized by a voltage of a first initialization power source, a plurality of second pixels disposed in a second pixel area and initialized by a voltage of a second initialization power source different from the first initialization power source, a data driver that supplies a data signal to a plurality of data lines connected to the first pixels and the second pixels, and a scan driver that supplies a scan signal to a plurality of scan lines connected to the first pixels and the second pixels. A black data signal supplied from the data driver to the first pixels and a black data signal supplied from the data driver to the second pixels are set to the same voltage.