Rotating Display Module FPC Structure for Low-Torque Screen Switching
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Solution Overview
Problem
Existing display devices face challenges in efficiently switching between horizontal and vertical screen orientations without causing damage to the flexible printed circuit board during rotation, and there is a need for a more reliable and energy-efficient mechanism to facilitate this transition.
Innovation Solution
A display module with a flexible printed circuit board featuring stacked connecting bands and thinning grooves to enhance torsion resistance, coupled with a hollow rotation shaft, allows for seamless rotation and reduces the risk of damage while minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a liquid crystal display is used, then power consumption is reduced and viewing angles are improved, but response time becomes insufficient for high-speed moving images
Solution Approach 1:
The pixel electrode is divided into multiple segments (first pixel electrode and second pixel electrode) that are independently controlled by different selection lines. This segmentation allows selective activation of pixel regions, enabling faster response times for high-speed moving images while maintaining the energy efficiency of liquid crystal displays through precise control of active pixel areas.
2Adaptability or versatility
If a liquid crystal display is used, then viewing angles are improved, but response time becomes insufficient for high-speed moving images
Solution Approach 1:
The pixel electrode is divided into multiple segments (first pixel electrode and second pixel electrode) that are independently controlled by different selection lines. This segmentation allows selective activation of pixel regions, enabling faster response times for high-speed moving images while maintaining the energy efficiency of liquid crystal displays through precise control of active pixel areas.
3Stability of the object's composition
If transverse electric field type liquid crystal or twisted nematic liquid crystal is used, then liquid crystal molecules can be aligned, but response time is slow due to large torque from strong electric fields
Solution Approach 1:
Different regions of the pixel electrode apply different electric field strengths to the liquid crystal molecules. The first and second pixel electrodes create localized electric fields that provide sufficient torque for molecular alignment while avoiding the excessively strong fields that cause slow response. This local quality approach enables both proper alignment and faster response times.
Solution Approach 2:
The pixel electrode is divided into multiple segments (first pixel electrode and second pixel electrode) that are independently controlled by different selection lines. This segmentation allows selective activation of pixel regions, enabling faster response times for high-speed moving images while maintaining the energy efficiency of liquid crystal displays through precise control of active pixel areas.
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 provides a reliable and efficient mechanism for switching screen orientations by enhancing the flexibility and durability of the circuit board, reducing the risk of damage and energy consumption during rotations.
Implementation Method 1
liquid crystal molecules having a rod shape that can be aligned in the same direction by an electric field
Data Source
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Figure 3~4
AI summary
A display module (10) and a display device, relating to the technical field of display. The display module (10) is configured to be rotatably connected to a main unit (5), and comprises: a display panel (11), a first circuit board (21), and a flexible circuit board (30). The display panel (11) is electrically connected to the first circuit board (21). The flexible circuit board (30) comprises: a first connecting part (31), a second connecting part (32) and a flexible connecting structure (33). The flexible connecting structure (33) comprises a plurality of stacked connecting bands (33a). Two ends of the flexible connecting structure (33) are respectively connected to the first connecting part (31) and the second connecting part (32), the first connecting part (31) is connected to the first circuit board (21), and the second connecting part (32) is configured to be connected to the main unit (5). Thus, the display module (10) can be controlled to automatically rotate, use requirements can be met, and energy consumption during rotation can be reduced.