Flexible Display Curvature Control Using Gear-Driven Slider Racks
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Solution Overview
Problem
Existing flexible display devices face challenges in maintaining a constant curvature from the center to both sides of the display panel and quickly changing the curvature to various user-desired shapes, due to limitations in their curvature-changing mechanisms.
Innovation Solution
A flexible display device with a plate bracket, large-diameter and small-diameter gears, slider racks, and arm plates that allow for the display panel to change curvature from flat to curved shapes with low power, using a mechanism involving interworking gears and slider racks to slide arm plates for precise curvature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curvature-changing mechanism is coupled to the back of the display panel, then the display panel can change curvature, but it is difficult to realize a constant curvature from the center to both sides of the display panel
Solution Approach 1:
The curvature-changing mechanism is divided into multiple independent curvature adjustment units, each corresponding to different regions of the display panel. Each unit includes a drive gear, slider rack, and arm plate that can be independently controlled to adjust curvature in specific zones, enabling precise and uniform curvature control across the entire panel from center to both sides.
2Adaptability or versatility
If a curvature-changing mechanism is used, then the display panel can change shape, but it is difficult to quickly change the curvature to various curvatures desired by the user while continuously maintaining the changed curvature
Solution Approach 1:
The mechanism employs multiple independently controllable curvature adjustment units with drive gears and slider racks that can be dynamically activated. When curvature change is needed, only the relevant units are actuated, enabling quick transitions to desired curvatures. The system can continuously maintain changed curvature by holding the position of each adjustment unit, providing both fast response and stable maintenance.
3Adaptability or versatility
If a complex curvature-changing mechanism is used to achieve precise curvature control, then various user needs can be accommodated, but the power consumption increases
Solution Approach 1:
The curvature-adjusting mechanism uses multiple independent adjustment units that can be selectively activated. Only the minimum necessary number of units are operated to achieve the desired curvature, rather than actuating all units. This partial action approach maintains precise curvature control capability while significantly reducing power consumption by keeping most units in a low-power stationary state.
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
Enables users to easily adjust the display panel's curvature from the center to both sides, accommodating various needs with low power consumption and environmental friendliness, regardless of device size.
Implementation Method 1
a large-diameter gear rotatably coupled to the plate bracket and having a first guide slot and a second guide slot formed on the upper and lower sides in an arc shape about a center axis of rotation, a small-diameter gear coupled to a central portion of the large-diameter gear to rotate with the large-diameter gear in an interworking manner
Implementation Method 2
a first slider rack intermeshing with the small-diameter gear on the upper side to slide in two side directions of the back cover along with rotation of the large-diameter gear
Data Source
AI summary
A flexible display device includes a plate bracket coupled to a rear surface of a back cover supporting a display panel, a large-diameter gear rotatably coupled to the plate bracket, a small-diameter gear coupled to a central portion of the large-diameter gear to rotate with the large-diameter gear in an interworking manner, first and second slider racks intermeshing with the small-diameter gear on the upper and lower sides to slide in two side directions of the back cover along with rotation of the large-diameter gear, a first arm plate coupled to the first slider rack to slide in an interworking manner with the first slider rack, and a second arm plate coupled to the second slider rack to slide in an interworking manner with the second slider rack.