VR Display Panel with Light Transmission Adjusting Layer
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Solution Overview
Problem
Existing display apparatuses for virtual reality head-mounted displays struggle to effectively conceal non-pixel areas, leading to potential visual recognition of these areas by users, which detracts from the immersive experience.
Innovation Solution
A display apparatus comprising a first panel with pixel areas and a non-pixel area, a lens unit for image enlargement, and a second panel with non-active and active areas, utilizing a light transmission adjusting layer, such as a liquid crystal layer, between substrates with polarizers to control light transmission and prevent visual recognition of non-pixel areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a lens unit is used to enlarge the image generated by the first panel, then the display image is enlarged to provide virtual reality, but the non-pixel area is also enlarged and becomes visually recognizable to the user
Solution Approach 1:
The second panel is divided into non-active areas (corresponding to pixel areas) and active areas (corresponding to non-pixel areas). The active areas are specifically designed to control and mask the enlarged non-pixel areas, while non-active areas maintain image transmission. This segmentation allows differential treatment of different regions to solve the visibility problem.
Solution Approach 2:
Different regions of the second panel have different optical properties: non-active areas have high light transmission to display the image, while active areas have controllable light transmission to mask the non-pixel areas. This local quality differentiation ensures that only the necessary regions mask the harmful visual information.
2Object-affected harmful factors
If a light transmission adjusting layer is added to control light transmission in the active area, then the visibility of non-pixel areas is reduced, but the device complexity increases
Solution Approach 1:
The light transmission adjusting layer serves multiple functions: it masks the non-pixel areas in the active regions, and simultaneously acts as part of the overall display structure. The polarizers and liquid crystal layer work together as an integrated system that provides both image display and masking functions, reducing the need for separate masking components.
Solution Approach 2:
The light transmission adjusting layer acts as an intermediary between the first panel (image source) and the user's eye. It selectively controls light transmission based on the region (active vs. non-active), allowing the image to pass through non-active areas while blocking light from non-pixel areas in active regions, thereby solving the visibility problem without direct mechanical masking.
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 enlarges images while minimizing the visibility of non-pixel areas, enhancing the user's immersive experience by adjusting light transmissivity based on image brightness, thereby reducing the likelihood of non-pixel areas being recognized.
Implementation Method 1
the light transmission adjusting layer may include a liquid crystal layer
Implementation Method 2
the liquid crystal layer may adjust a light transmissivity in the active area according to a voltage difference between a first voltage applied to the first electrode and a second voltage applied to the second electrode
Implementation Method 3
a first polarizer at (e.g., on) a first surface of the first substrate, a plurality of first open units overlapping with the plurality of non-active areas being defined in the first polarizer, the first polarizer having a first polarization axis; and a second polarizer at (e.g., on) a second surface of the second substrate
Data Source
AI summary
A display apparatus includes a first panel including a plurality of pixel areas configured to provide an image, and a non-pixel area around the plurality of pixel areas, a lens unit on the first panel and configured to enlarge the image by a magnitude of N to generate a display image, a second panel on the lens unit, the second panel being larger than the first panel by a magnitude of N, and including a plurality of non-active areas corresponding to the plurality of pixel areas, and an active area around the plurality of non-active areas, and corresponding to the non-pixel area, a first substrate including a first electrode at the active area, a second substrate including a second electrode facing the first electrode, and a light transmission adjusting layer between the first substrate and the second substrate, wherein N is a rational number greater than 1.