Under-Screen LCD With Segmented Micro LED Region
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Solution Overview
Problem
Current liquid crystal display (LCD) technologies face challenges in achieving full-screen designs with under-screen sensing capabilities due to high manufacturing costs and low technical maturity, especially with micro LED technologies, while OLEDs have advantages but require better solutions based on existing LCD technologies.
Innovation Solution
An LCD device with a micro LED module using a transparent substrate and RGB colors for display, allowing light to pass through areas without chips, enabling seamless integration with liquid crystal modules for full-screen designs and under-screen sensing applications like fingerprint recognition and camera functionality without display interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If micro LED technologies are used for under-screen sensing, then full-screen design capabilities are improved, but manufacturing cost increases and technical maturity decreases
Solution Approach 1:
The display screen is segmented into two distinct functional regions: a liquid crystal display region for normal display operations and a micro LED region for under-screen sensing applications. This segmentation allows each technology to operate in its optimal performance zone while avoiding the need to implement micro LED across the entire screen, thereby reducing manufacturing complexity and cost.
Solution Approach 2:
Different display technologies are applied to different locations on the screen based on functional requirements. The liquid crystal module provides cost-effective display for the majority of the screen area, while micro LED modules are strategically placed in specific regions where under-screen sensing capabilities are needed, optimizing both performance and manufacturing feasibility.
2Reliability
If OLED technologies are used for under-screen sensing, then compatibility with optical fingerprint modules is improved, but cost advantages of LCD are lost
Solution Approach 1:
The display is divided into regions using different technologies: LCD for cost-sensitive areas and micro LED for regions requiring optical sensor compatibility. This segmentation preserves the cost advantage of LCD while achieving OLED-level sensor compatibility in specific functional zones.
Solution Approach 2:
Micro LED modules serve as an intermediary technology that bridges the gap between LCD and OLED. They provide the active light emission characteristics needed for optical sensor compatibility while maintaining better cost and manufacturing characteristics than full OLED implementation.
3Adaptability or versatility
If digging schemes are used in LCD for under-screen camera, then under-screen sensing is enabled, but display continuity is interrupted creating notches or holes
Solution Approach 1:
The micro LED display region is seamlessly merged with the liquid crystal display region, creating a unified full-screen display without visible boundaries, notches, or holes. The adjacent positioning and matching of display characteristics between the two regions ensures visual continuity while enabling under-screen sensing capabilities.
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 solution enables transparent displays and seamless under-screen sensing capabilities, reducing manufacturing costs and improving technical maturity by utilizing micro LEDs for full-screen designs with high brightness and long life, while avoiding display interruptions and discontinuous boundaries.
Implementation Method 1
micro light emitting diode (LED) modules with small areas based on a transparent substrate for display in a stacking direction. the micro LED module utilizes red, green, and blue (RGB) three-color for display
Implementation Method 2
The LCDs are passive light emitting technologies, and a light and dark control of light is realized by illuminating liquid crystal cells through an entire backlight structure
Implementation Method 3
a coverage area of each of chips is smaller than an area of each of sub-pixels. In the area where there is no chip inside the sub-pixel, light can pass normally
Data Source
AI summary
The present invention provides a liquid crystal display (LCD) device for an under-screen identification scheme. The LCD device for the under-screen identification scheme comprises a liquid crystal module, a backlight module, an under-screen sensor, and a micro light emitting diode (LED) module. The liquid crystal module defines a liquid crystal module operable region and a digging region adjacent to the liquid crystal module operable region. Therefore, there is no display interruption and discontinuous boundaries in the vision, and can achieve a complete full-screen design.