Display Panel Electrode Layout for Switchable Peek-Proof Viewing
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Solution Overview
Problem
Existing white-state peek prevention methods in display panels compromise light brightness and increase power consumption due to the need for light control structures, which are costly and complex to manufacture, and result in reduced viewing angles.
Innovation Solution
A display panel design incorporating pixel electrodes and peek-proof electrodes with a light-shielding structural layer that includes a light-shielding structure and hollow-out portion, allowing for switching between narrow and wide viewing angle modes by controlling the voltage applied to the peek-proof electrodes, thereby optimizing light transmission and preventing peeking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light control structure is used for white-state peek prevention, then peeking is prevented, but brightness is reduced and power consumption increases
Solution Approach 1:
The invention divides the electrode structure into pixel electrodes and peek-proof electrodes, with the peek-proof electrodes specifically positioned to prevent peeking from side angles. This segmentation allows the light control function to be separated from the main pixel structure, enabling peek prevention without requiring a complete light control structure across the entire display, thus maintaining brightness while preventing peeking.
Solution Approach 2:
The peek-proof electrodes are positioned only in specific regions where peeking prevention is needed (at the edges of pixel electrodes), rather than implementing a uniform light control structure across the entire display panel. This local implementation reduces the overall impact on light transmission and brightness while providing effective peek prevention where required.
2Object-affected harmful factors
If a light control structure is used for white-state peek prevention, then peeking is prevented, but manufacturing complexity and cost increase
Solution Approach 1:
The invention merges the peek-proof electrodes with the existing pixel electrode structure, forming them as an integrated electrode pattern on the same substrate. This combination eliminates the need for separate light control structures and reduces manufacturing complexity by using a unified electrode fabrication process that leverages existing display manufacturing capabilities.
Solution Approach 2:
The electrode structure serves multiple functions: pixel electrodes for normal display operation and peek-proof electrodes for preventing peeking. This multi-functionality eliminates the need for dedicated light control structures, simplifying the overall device design and reducing manufacturing complexity while achieving peek prevention.
3Object-affected harmful factors
If a light control structure is used for white-state peek prevention, then peeking is prevented, but display panel thickness increases
Solution Approach 1:
The invention extracts the light control function from traditional bulky light control structures and implements it through thin electrode patterns formed on the substrate. By taking out the light control function and implementing it through planar electrodes rather than three-dimensional light control layers, the display panel thickness is significantly reduced while maintaining peek prevention capability.
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
This solution enhances the display panel's peek-proof functionality while maintaining brightness and reducing power consumption by allowing flexible switching between viewing modes, improving both visual experience and manufacturing efficiency.
Implementation Method 1
a light-shielding structural layer including a light-shielding structure and a hollow-out portion
Implementation Method 2
a display dielectric layer located at a side of the first substrate; pixel electrodes and peek-proof electrodes, all of the pixel electrodes and the peek-proof electrodes being arranged between the first substrate and the display dielectric layer
Data Source
AI summary
A display panel, a method for driving the display panel, and a display device are provided. In an embodiment, the display panel includes: a first substrate; a display dielectric layer located at a side of the first substrate; pixel electrodes and peek-proof electrodes, all of the pixel electrodes and the peek-proof electrodes being arranged between the first substrate and the display dielectric layer; and a light-shielding structural layer including a light-shielding structure and a hollow-out portion. In an embodiment, along a direction perpendicular to a plane of the display panel, the peek-proof electrodes overlap with the light-shielding structure, and the pixel electrodes overlap with the hollow-out portion; and the light-shielding structural layer is located at a side of the peek-proof electrodes adjacent to a light exit surface of the display panel.