Bidirectional Scan Control for Wearable Display Panels
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Solution Overview
Problem
Electroluminescent displays, such as OLEDs, face challenges in performing both forward and backward scanning efficiently, leading to improper wear and user experience degradation when not provided with an ear, as they tend to be worn incorrectly due to a black screen state, especially if backward scanning is not possible.
Innovation Solution
A display panel with a shift register group and a switch circuit that enables both forward and backward scanning by transmitting scan signals to gate lines, reducing the number of shift registers needed and minimizing the bezel area, allowing for efficient scanning in both directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only forward scanning is implemented in electroluminescent displays, then the device structure is simple, but the display cannot function properly when worn incorrectly (black screen state)
Solution Approach 1:
The patent implements backward scanning capability in addition to forward scanning, allowing the display to function correctly regardless of wearing orientation. The shift register group can scan gate lines in reverse direction, transforming the display from a unidirectional to bidirectional scanning system, which resolves the black screen issue when worn incorrectly.
Solution Approach 2:
The shift register group is designed to perform multiple functions: forward scanning, backward scanning, and selective activation based on wearing condition. This multi-functionality allows the same hardware to adapt to different wearing scenarios (correct and incorrect orientation) without requiring separate display systems.
2Adaptability or versatility
If backward scanning is added to enable proper display when worn incorrectly, then adaptability improves, but the number of shift registers and bezel area increase
Solution Approach 1:
The patent merges the forward and backward scanning capabilities into a single shift register group rather than using separate shift registers for each direction. The switch circuit dynamically connects the shift register group to gate lines in different configurations, allowing one shift register group to serve dual scanning purposes and reducing overall component count.
Solution Approach 2:
The switch circuit introduces dynamic reconfiguration capability, allowing the connection between shift registers and gate lines to change based on scanning direction. This dynamic switching enables the same physical components to be rearranged logically, achieving bidirectional scanning without permanently duplicating hardware components.
3Adaptability or versatility
If a switch circuit is introduced to enable bidirectional scanning, then scanning flexibility improves, but the device complexity increases
Solution Approach 1:
The switch circuit acts as an intermediary component between the shift register group and gate lines, managing the complexity of bidirectional scanning control. Rather than making the shift registers themselves complex, the switch circuit handles the directional routing, isolating the scanning logic from the connection management complexity.
Data Source
AI summary
The disclosure relates to the field of display technologies, and discloses a display panel, a method for driving the same, and a display device. In embodiments of the disclosure, a switch circuit is between a group of shift registers and respective gate lines to transmit a scan signal output by the corresponding shift register group to the respective gate lines, wherein the shift register group performs forward or backward scanning on the respective gate lines, that is, the display device can perform both forward scanning and backward scanning so that an application field of the display device can be greatly extended.