Under-Display Screen Layout for Light Transmittance and Uniform Luminance
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Solution Overview
Problem
Existing full-screen mobile phones with under-display photosensitive elements, such as fingerprint sensors or cameras, face issues of reduced light transmittance due to lower pixel density, affecting overall display quality.
Innovation Solution
A display screen design incorporating first and second pixel units, where the first pixel units use micro LEDs with a smaller projection area and longer lifespan, and the second units use OLEDs, allowing for higher light transmittance and uniform luminance across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel density is reduced in the area corresponding to the photosensitive element, then light transmittance is improved, but overall display effect deteriorates
Solution Approach 1:
The patent applies local quality by using different light-emitting unit designs in different display areas. The first display area (with photosensitive element) uses light-emitting units with smaller projection areas to maximize light transmittance, while the second display area uses conventional light-emitting units for optimal display quality. This localized differentiation resolves the contradiction by allowing each area to be optimized for its specific function.
Solution Approach 2:
The display screen is segmented into multiple display areas with different characteristics. The patent divides the display screen into a first display area containing photosensitive elements and a second display area without photosensitive elements, allowing independent optimization of light transmittance and display quality in each segment.
2Illumination intensity
If light-emitting unit projection area is reduced, then light transmittance is improved, but display area coverage decreases
Solution Approach 1:
Different light-emitting unit projection areas are used in different display areas. The first light-emitting units have smaller projection areas optimized for light transmittance in the photosensitive element area, while the second light-emitting units have larger projection areas optimized for display coverage in the conventional display area.
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 design enhances light transmittance and maintains consistent luminance, improving imaging quality and display uniformity while ensuring a high screen-to-body ratio and extended lifespan of the display areas.
Implementation Method 1
Each of the multiple first pixel units includes a first light-emitting unit and a first driving circuit configured to drive the first light-emitting unit to emit light
Implementation Method 2
Each of the multiple second pixel units includes a second light-emitting unit... the second light-emitting unit includes an organic light-emitting diode
Data Source
AI summary
A display screen, an electronic device and a manufacturing method for a display screen are provided. The display screen includes a substrate, multiple first pixel units, multiple second pixel units, and a second driving circuit. Each first pixel unit includes a first light-emitting unit and a first driving circuit configured to drive the first light-emitting unit, the first light-emitting unit is disposed on the first driving circuit and arranged in a first area together of the substrate with the first driving circuit. Each second pixel unit includes a second light-emitting unit, and the second light-emitting unit is arranged in the second area of the substrate. The second driving circuit is configured to drive the second light-emitting unit to emit light. An area of a projection of the first light-emitting unit on the substrate is smaller than an area of a projection of the second light-emitting unit on the substrate.