Display Screen PPI Adjustment for Camera Area Brightness
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Solution Overview
Problem
The extension of display areas in mobile terminals to achieve a full-screen effect is hindered by components like front cameras, which block light from the backlight source, causing uneven brightness due to interference with the light emitted by the backlight module.
Innovation Solution
A display screen design that includes a backlight module with an accommodation space for functional elements, where the pixels per inch (PPI) in the first display area are lower than in the second area, allowing for improved light transmittance and uniformity by adjusting PPI and light density distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display area is extended to include the area where components (such as a front camera) are set, then the comprehensive screen effect is achieved, but the components block light from the backlight source causing uneven brightness
Solution Approach 1:
The patent applies local quality by differentiating the display panel into multiple regions with different PPI values. The first display area (where components are located) has a first PPI value, while the second display area has a second PPI value that is higher than the first. This local differentiation allows the component area to have lower pixel density (improving light transmittance) while other areas maintain high pixel density for display quality.
Solution Approach 2:
The patent changes the PPI parameter across different regions of the display panel. By setting different PPI values in different areas, the patent optimizes the balance between component integration and display quality. The first display area has lower PPI to allow component placement and light transmission, while the second display area has higher PPI for superior display performance.
2Area of stationary object
If components are placed in the display area to achieve full-screen effect, then the screen coverage is improved, but light transmittance is reduced causing brightness unevenness
Solution Approach 1:
The patent implements local quality by creating distinct display regions with different characteristics. The first display area is optimized for component integration with lower PPI and higher light transmittance, while the second display area is optimized for visual display with higher PPI. This spatial differentiation resolves the conflict between screen coverage and light transmittance.
Solution Approach 2:
The patent segments the display panel into multiple functional zones: the first display area for component placement and the second display area for high-quality display. This segmentation allows each zone to be optimized for its specific function, with the first area accommodating components and the second area providing superior visual output.
Data Source
AI summary
The embodiments of the disclosure provide a display screen and a mobile terminal, and relate to mobile terminals. The display screen may include a display panel and a backlight module. The backlight module may include a backlight panel and a backlight source placed on one side of the backlight panel. The display screen may define an accommodation space at least penetrating the backlight module and used to accommodate functional elements. The display panel may include a non-display area corresponding to the accommodation space in the backlight module, a first display area being set on one side of the non-display area, which is further away from the backlight source than the other side of the non-display area, and a second display area surrounding the non-display area and the first display area. The pixels per inch (PPI) of the first display area are smaller than PPI of the second display area.