HMD Display Module Lens Layer Black Matrix Lattice
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Solution Overview
Problem
In head-mounted display (HMD) devices, the black matrix is often recognized as a lattice pattern by users, especially with high-resolution small display modules, leading to increased manufacturing costs without resolving the lattice recognition issue.
Innovation Solution
A display module design featuring a first substrate with pixels and a second substrate with an engraved pattern filled with a lens layer, where the lens layer comprises lenses corresponding to each pixel, effectively refracting light to prevent the black matrix from being perceived as a lattice by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the resolution of the display module is increased to reduce the area of the black matrix, then the black matrix lattice recognition problem is addressed, but the manufacturing cost of the HMD device increases
Solution Approach 1:
A lens layer is introduced as an intermediary component between the display module and the user's eye. This lens layer includes multiple lenses that refract light from the display module, effectively magnifying the displayed image while minimizing the visibility of the black matrix lattice structure. The lens layer acts as a mediator that transforms the optical path, allowing the use of lower resolution display modules without sacrificing visual quality.
Solution Approach 2:
The patent changes the optical parameters of the system by introducing a lens layer with specific refractive properties. The lenses in this layer have optimized curvature and refractive index values that allow light from the display module to be focused and magnified in a way that reduces the apparent size of the black matrix lattice, thereby eliminating the lattice recognition problem without requiring higher display resolution.
2Area of stationary object
If a small display module with high resolution is applied, then the black matrix area is reduced, but the manufacturing cost increases
Solution Approach 1:
The lens layer serves as an intermediary that optically magnifies the image from a smaller, lower-resolution display module. This allows the system to use a display module with larger black matrix area (lower resolution) while still achieving the visual effect of high resolution through optical magnification, thereby reducing manufacturing costs.
Solution Approach 2:
The patent introduces an additional dimensional element - the lens layer with its three-dimensional lens structures. This adds an optical dimension to the system, allowing image magnification and black matrix minimization through optical pathways rather than relying solely on increasing the two-dimensional pixel density of the display module.
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 design enhances user experience by eliminating the lattice pattern recognition of the black matrix without increasing the display module's resolution, thereby reducing manufacturing costs and improving visual quality.
Implementation Method 1
a lens layer filled into the engraved pattern of the second substrate. The lens layer comprises a plurality of lenses respectively corresponding to the plurality of pixels
Data Source
AI summary
A display module and an HMD device including the same are discussed in which a black matrix is not recognized as a lattice type by a user without an increase in resolution of the display module. The display module according to an embodiment includes a first substrate on which a plurality of pixels are provided, a second substrate including one surface on which an engraved pattern is provided, and a lens layer filled into the engraved pattern of the second substrate. The lens layer comprises a plurality of lenses respectively corresponding to the plurality of pixels.