Prism-Based Optical Modulation for Display Privacy and Light Utilization
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Solution Overview
Problem
Existing display devices face challenges in effectively protecting privacy while maintaining high light utilization, as anti-peeping methods often result in reduced light energy utilization due to the absorption of light at large angles, leading to increased power consumption.
Innovation Solution
Incorporating optical modulation components with prisms on the light-emitting side of the display panel, which refract light to exit at a preset angle, thereby controlling the viewing angle and preventing information leakage while maximizing light utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If anti-peeping method is used to protect privacy, then privacy protection is improved, but light energy utilization is reduced
Solution Approach 1:
The patent converts light that would normally be wasted at large angles into useful light by using prism structures to refract and redirect these large-angle light rays into the visible viewing angle range. This transforms what was previously harmful waste light into beneficial illumination, achieving both privacy protection and high light utilization simultaneously
Solution Approach 2:
The patent changes the directional parameters of light propagation by introducing prism structures with specific refractive indices and geometric configurations. These prisms refract light at controlled angles, transforming the angular distribution of emitted light to concentrate it within the desired viewing cone while blocking peeping angles
2Object-affected harmful factors
If anti-peeping method is used to prevent information leakage, then security is improved, but power consumption increases
Solution Approach 1:
The patent reduces power consumption by converting previously wasted large-angle light into useful light through prism refraction. Since more of the emitted light reaches the viewer, the display device can operate at lower power levels to achieve the same perceived brightness, thereby reducing overall power consumption while maintaining security
Solution Approach 2:
The patent ensures continuous utilization of light across all emission angles by capturing and redirecting large-angle light rays that would otherwise be lost. This continuous redirection of light energy maintains effective illumination without requiring additional power input to compensate for wasted light
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 effectively narrows the viewing angle to prevent peeping while ensuring that light rays with large angles are received by the user, thereby improving light utilization and reducing power consumption.
Implementation Method 1
the prism is configured to refract light emitted by the corresponding pixel unit so that the refracted light exits at a preset angle
Data Source
AI summary
A display device and a manufacturing method thereof are provided. The display device includes a display panel and an optical modulation component on a light-emitting side of the display panel; the display panel includes multiple pixel units, the optical modulation component includes multiple optical modulation units in one-to-one correspondence with the multiple pixel units, and each optical modulation unit includes multiple prisms; and the prism is configured to refract light emitted from the corresponding pixel units so that the refracted light exits at a preset angle.