Foldable Display Device Bending Region Accommodation
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Solution Overview
Problem
Foldable flexible display screens driven by two driver ICs face limitations in folding direction and seamless full-screen display, particularly at the bending portion, where the bending area is difficult to be driven for display.
Innovation Solution
A foldable display device with a flexible panel divided into display regions supported by frames that can switch between overlapping and unfolded states, utilizing separate gate driving circuits and a locking mechanism to accommodate the bending region, allowing for seamless full-screen display and flexible folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two driver ICs are adopted to drive high-resolution foldable flexible display screen, then display resolution requirement is satisfied, but folding direction is limited and can only be performed along a direction perpendicular to the driver ICs
Solution Approach 1:
The display screen is divided into a first display region and a second display region, with each region driven by separate driver ICs. This segmentation allows independent driving of each region and enables flexible folding along multiple directions without being constrained by a single driver IC layout.
Solution Approach 2:
The patent introduces a bending region that extends in a direction parallel to the driver ICs, adding a new dimension to the folding capability. This allows the display screen to be folded not only perpendicular to the driver ICs but also along directions parallel to them, achieving multi-directional folding.
2Area of stationary object
If display screen is driven together by gate driving circuit of GOA on the display screen, then full-screen display is achieved, but bending portion is difficult to be driven and seamless display cannot be realized
Solution Approach 1:
The display screen is segmented into multiple regions (first display region, second display region, and bending region) with separate driver ICs for each region. This segmentation enables independent driving of each region, including the bending portion, allowing the bending region to be driven for display purposes and achieving seamless full-screen display.
Solution Approach 2:
The bending region acts as an intermediary structure that connects the first and second display regions. By equipping the bending region with driving capabilities and making it foldable, it serves as a mediator that enables both the display function and the folding function, resolving the conflict between full-screen display and bending portion drivability.
3Volume of moving object
If display screen is folded to improve portability, then smaller size is achieved, but display quality and seamless appearance are compromised
Solution Approach 1:
The display screen is divided into multiple regions with separate driver ICs, allowing the bending region to be independently controlled. This segmentation enables precise control of display quality in each region even when folded, maintaining seamless appearance while achieving compact size.
Solution Approach 2:
The patent introduces a dynamic locking mechanism that can lock the first and second panel supporting frames in different states (locked state for flat display, unlocked state for folded configuration). This dynamic locking enables the display device to maintain display quality and seamless appearance in the unfolded state while achieving compact size when folded.
Data Source
AI summary
A foldable display device is provided. The foldable display device includes a flexible display panel including a first display region, a second display region and a bending region and having a first state and a second state; and a first panel supporting frame and a second panel supporting frame configured to support the first display region and the second display region, respectively. In the first state, the first and the second panel supporting frames overlap with each other; and in the second state, the first and the second panel supporting frames are in a same plane and form an accommodation space in which the bending region is accommodated, and a first border of the first display region and a fifth border of the second display region abut against and are in contact with each other to form a structure of flat panel display.