Display Panel Visual-Angle Switching for Anti-Peep Viewing
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Solution Overview
Problem
Self-luminous display panels lack the ability to switch between an anti-peep mode and a normal display mode, making it difficult to ensure information security in public or specific places.
Innovation Solution
A display panel design that includes a driving array, first light-emitting devices, and second light-emitting devices, where the driving array controls the states of both types of devices to switch between an anti-peep mode and a normal display mode by adjusting the visual angle, with the second light-emitting devices emitting most light from side surfaces in anti-peep mode and minimizing front surface emission to allow clear viewing within a preset angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an optical film is attached to achieve permanent anti-peep, then information security is improved, but the thickness of the product increases and brightness is reduced
Solution Approach 1:
The patent divides the light-emitting function into two separate sets of light-emitting devices: first light-emitting devices for normal display and second light-emitting devices for anti-peep function. This segmentation allows each component to be optimized independently, eliminating the need for additional optical films and reducing overall product thickness while maintaining both functions.
Solution Approach 2:
The second light-emitting devices serve multiple purposes: they provide anti-peep functionality by emitting light at large view angles while simultaneously serving as part of the overall display structure. This multi-functionality eliminates the need for separate anti-peep films, reducing thickness and maintaining brightness.
2Reliability
If an optical film is attached to achieve permanent anti-peep, then information security is improved, but the brightness of the product is reduced
Solution Approach 1:
By segmenting the light-emitting function into first and second light-emitting devices, the patent eliminates the need for anti-peep optical films that would otherwise block and reduce brightness. The second light-emitting devices directly provide anti-peep functionality without requiring additional optical layers, thus maintaining high brightness levels.
3Ease of manufacture
If a conventional display panel is used, then manufacturing simplicity is maintained, but the ability to switch between anti-peep mode and normal display mode is lost
Solution Approach 1:
The patent segments the light-emitting devices into two independently controllable groups (first and second light-emitting devices), each connected to the driving array. This segmentation enables independent control of normal display and anti-peep functions while maintaining a relatively simple driving structure, achieving both manufacturing feasibility and mode switching capability.
Solution Approach 2:
The patent implements dynamic switching between normal display mode and anti-peep mode by controlling the working states of the first and second light-emitting devices through the driving array. This dynamic control allows the display panel to adapt to different viewing requirements while maintaining a unified structure that is relatively easy to manufacture.
4Reliability
If the second light-emitting devices emit light with high intensity in anti-peep mode, then anti-peep effectiveness is improved, but the visual angle in normal display mode may be affected
Solution Approach 1:
By segmenting the light-emitting function into first and second light-emitting devices, the patent allows the second devices to emit high-intensity light for anti-peep without affecting the normal display visual angle. The first light-emitting devices maintain their original emission characteristics for wide viewing angles, while the second devices provide targeted anti-peep illumination at large angles.
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 the display panel to effectively switch between anti-peep and normal display modes, ensuring information security by distorting the display at large view angles while allowing clear reading at front-facing angles, thus addressing the lack of mode switching in existing self-luminous devices.
Implementation Method 1
In the first mode, most of the light emitted by the second light-emitting devices is emitted from side surfaces of the second light-emitting devices
Data Source
AI summary
The present disclosure relates to a display panel and an electronic device. The display panel includes a driving array; first light-emitting deices electrically connected with the driving array; and second light-emitting devices located between at least two of the first light-emitting devices and electrically connected with the driving array. In a case where the first light-emitting devices are in a working state and the second light-emitting devices are in a first state, the display panel is in a first mode; and in a case where the first light-emitting devices are in a working state and the second light-emitting devices are in a second state, the display panel is in a second mode, wherein a visual angle of the display panel in the first mode is greater than 0 and smaller than a visual angle of the display panel in the second mode.