Display Panel Scanning Procedure for Viewing Angle Control
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Solution Overview
Problem
Conventional display panels with privacy protecting designs face inconvenience in switching between wide and narrow viewing angle modes, affecting user privacy and usability.
Innovation Solution
A display panel with a pixel array that includes scan lines, data lines, first, and second pixel units, where the scanning procedure is reversed between modes to toggle between wide and narrow viewing angle modes, allowing easy switching between privacy protecting and normal display modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an optical film is added to achieve privacy protecting design, then privacy protection is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent extracts the privacy protection function from a separate optical film and integrates it into the pixel structure itself through sub-pixel electrodes and selective scanning. This eliminates the need for additional optical films while maintaining privacy protection capability.
Solution Approach 2:
The pixel units are designed to perform multiple functions: normal display and privacy protection. By using sub-pixel electrodes and alternative scanning procedures, the same pixel structure achieves both wide viewing angle display and privacy protection modes without requiring separate components.
2Object-affected harmful factors
If an optical film is added to achieve privacy protecting design, then privacy protection is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements dynamic switching between normal and privacy protection modes through alternative scanning procedures. The display can be switched between wide viewing angle mode and privacy protection mode by changing the scanning sequence, allowing users to easily adjust privacy levels without physical adjustments.
3Adaptability or versatility
If alternative scanning procedures are implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent uses inverted scanning procedures to achieve privacy protection. Instead of scanning from the first scan line to the Nth scan line in normal mode, the privacy protection mode scans from the Nth scan line to the first scan line, utilizing the same hardware infrastructure with a reversed control sequence.
Data Source
AI summary
A driving method of a display panel is described. A display panel including a pixel array is provided. The pixel array includes N scan lines, M data lines, and a plurality of first pixel units and a plurality of second pixel units electrically connected to the scan lines and the data lines. When an image is displayed with a wide-viewing angle mode, a first scanning procedure is performed to sequentially scan the first scan line of the scan lines to the Nth scan line of the scan lines in order. When the image is displayed with a narrow-viewing angle mode, the second scanning procedure is performed to sequentially scan the Nth scan line of the scan lines to the first scan line of the scan lines in order.