Display Panel Light Layout for Switchable Privacy and Sharing Modes
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Solution Overview
Problem
Existing display panels with anti-peeping functions can only operate in a single mode, causing inconvenience when multiple users need to view the screen simultaneously, affecting user experience.
Innovation Solution
A display panel design incorporating a primary light-emitting element and an auxiliary light-emitting element, with a light-shielding layer featuring a first opening, allows for switching between a sharing mode and an anti-peeping mode by controlling the emission states of these elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a grating structure is set in the display panel to form an anti-peeping film, then the anti-peeping function is improved by narrowing the viewing angle, but the display mode becomes fixed and cannot support multiple users viewing simultaneously
Solution Approach 1:
The light-emitting element is divided into a primary light-emitting element and an auxiliary light-emitting element. The primary element emits light directly through the first opening for normal viewing, while the auxiliary element emits light at oblique angles. By selectively controlling which elements emit light, the display can switch between anti-peeping mode (only primary element active) and sharing mode (both elements active), thus resolving the contradiction between privacy protection and multi-user viewing capability
Solution Approach 2:
The display panel dynamically adjusts its viewing angle characteristics by controlling the emission state of the auxiliary light-emitting element. When the auxiliary element is turned off, the viewing angle is narrowed for privacy protection. When the auxiliary element is turned on, the viewing angle is widened to allow multiple users to view simultaneously. This dynamic adjustment enables the display to adapt to different usage scenarios, resolving the fixed-mode limitation
2Object-affected harmful factors
If the display panel operates in anti-peeping mode with a narrow viewing angle, then privacy protection is improved, but the viewing range is reduced making it unsuitable for shared viewing
Solution Approach 1:
The light emission function is segmented between primary and auxiliary light-emitting elements. The primary element provides light for the frontal viewing direction, while the auxiliary element provides light for oblique viewing directions. This segmentation allows independent control of light emission in different angular ranges, enabling the display to expand or contract its effective viewing angle based on the operational mode required
Solution Approach 2:
Different regions of the display have different light emission characteristics. The primary light-emitting element is positioned to emit light primarily in the frontal direction through the first opening, while the auxiliary light-emitting element is positioned at the periphery to emit light at oblique angles. This local differentiation of light emission quality enables mode switching between narrow and wide viewing angles
3Adaptability or versatility
If the display panel operates in sharing mode with a wide viewing angle, then multi-user viewing capability is improved, but privacy protection is reduced allowing peeping from oblique angles
Solution Approach 1:
The display dynamically controls the emission state of the auxiliary light-emitting element to adapt to different viewing requirements. When multiple users need to view the screen, the auxiliary element is activated to provide oblique viewing capability. When privacy protection is needed, the auxiliary element is deactivated, automatically narrowing the effective viewing angle and blocking oblique peeping, thus dynamically balancing sharing capability and privacy security
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
The solution enables flexible mode control, providing a larger viewing angle for shared viewing and a narrow viewing angle for privacy protection, enhancing user experience and privacy security.
Implementation Method 1
a light-shielding layer... located at a side of the light-emitting element facing away from the substrate
Implementation Method 2
driving both the primary light-emitting element and the auxiliary light-emitting element to emit light
Implementation Method 3
the light emitted by the auxiliary light-emitting element exits through the first opening obliquely above the auxiliary light emitting element
Data Source
AI summary
A display panel including a substrate; a light-emitting element; and a light-shielding layer. The light-emitting element is located at a side of the substrate and includes a primary light-emitting element and an auxiliary light-emitting element. The light-shielding layer is located at a side of the light-emitting element facing away from the substrate and includes a first opening corresponding to the primary light-emitting element. The auxiliary light-emitting element is arranged at a periphery of the primary light-emitting element.