Liquid Crystal Lens Module for Full-Screen Display Devices
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Solution Overview
Problem
Conventional display devices face challenges in achieving a full screen effect due to the need for front cameras to be arranged in specific areas, which hinders the screen-to-body ratio.
Innovation Solution
A display device with a built-in lens module, comprising a light-emitting device layer, a main lens module with a liquid crystal layer and electrodes, and a control module that adjusts voltages to deflect liquid crystal molecules and form lens structures, allowing for improved focus and screen utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If front cameras are arranged in specific areas on conventional display devices, then image capture function is achieved, but screen-to-body ratio is reduced
Solution Approach 1:
The patent merges the camera lens function with the display screen by integrating a liquid crystal layer directly into the display structure. The liquid crystal layer serves dual purposes: as part of the display when inactive, and as a lens structure when activated by voltage, thereby eliminating the need for separate front camera modules and improving screen-to-body ratio.
Solution Approach 2:
The liquid crystal layer is designed to perform multiple functions: it acts as a display component during normal operation and transforms into a lens structure when voltage is applied. This multi-functionality allows the same component to serve both display and imaging purposes, reducing overall device complexity while maintaining full-screen appearance.
2Adaptability or versatility
If liquid crystal molecules are deflected to form lens structures, then focus adjustment capability is achieved, but device complexity increases
Solution Approach 1:
The liquid crystal molecules automatically align and form lens structures when voltage is applied, without requiring mechanical actuators or complex moving parts. The electric field itself serves as the actuation mechanism, simplifying the overall device structure while providing focus adjustment capability through voltage control.
Solution Approach 2:
The patent utilizes changes in voltage parameters to control the deflection of liquid crystal molecules, thereby adjusting the focal length of the lens structure. By varying the voltage applied to the liquid crystal layer, the system can dynamically adjust focus without mechanical movement, simplifying the control system while providing adaptability.
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 display device enhances the screen-to-body ratio by integrating the lens module, eliminating the need for front cameras to occupy specific areas and enabling better light management and image capture.
Implementation Method 1
electric fields generated between the plurality of first electrodes and electric fields generated between the plurality of second electrodes drive liquid crystal molecules in the first liquid crystal layer to be deflected and arranged as a first lens structure
Implementation Method 2
liquid crystal molecules in the first liquid crystal layer
Implementation Method 3
the control module controls the voltages of the plurality of first electrodes and the plurality of second electrodes to vary a focus of the first lens structure
Data Source
AI summary
A display device includes a first substrate, a light-emitting device layer, a main lens module, and a control module. The light-emitting device layer is formed on the first substrate and includes first electrodes. The main lens module is disposed above the light-emitting device layer. The main lens module includes a second substrate, second electrodes formed on a surface of the second substrate, and a first liquid crystal layer disposed above the second substrate. The control module is electrically connected to the first and second electrodes and is configured to control voltages of the first and second electrodes. Electric fields generated between the first electrodes and between the second electrodes drive liquid crystal molecules in the first liquid crystal layer to be deflected and arranged as a first lens structure. The control module controls the voltages of the first and second electrodes to vary a focus of the first lens structure.