Free-form Prism Module for Borderless Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large-screen display systems that combine multiple LCDs often experience invalid display areas, particularly at edges and corners, due to differences in light path lengths, leading to compromised viewing quality and incomplete image display.
Innovation Solution
A prism module comprising a first prism located on the edge area of a display with free-form curved corner portions and a second prism on the frame area with conformally disposed corner portions, allowing light to be refracted and extended to cover the entire display area, including corners and edges, to achieve borderless display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If several LCDs are pieced together as a large display screen, then the display area is expanded, but invalid display areas exist among the display images leading to compromised viewing quality
Solution Approach 1:
A light guide plate is introduced as an intermediary component between multiple LCDs. The light guide plate redirects light from the display area to the frame area, enabling seamless image display across LCD boundaries and eliminating invalid display areas while maintaining viewing quality.
Solution Approach 2:
The invention utilizes the frame area, which was previously unused, by redirecting light into this spatial dimension. The light guide plate bends light paths to utilize the frame area for displaying images that would otherwise be lost at the edges and corners of individual LCDs.
2Device complexity
If the light path for corner display areas is made identical to edge display areas, then the structure is simplified, but corner areas cannot display images due to insufficient light path length
Solution Approach 1:
The light guide plate features different local structures: a first light guide portion with a first refractive index for edge areas, and a second light guide portion with a second refractive index for corner areas. This local differentiation enables corners to achieve sufficient light path length while maintaining overall structural integration.
Solution Approach 2:
The invention changes the refractive index parameter of the light guide plate material in different regions. By using materials with different refractive indices for different portions of the light guide plate, the light path length is optimized for both edge and corner display areas, enabling full-image display.
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 seamless image display across the entire screen, including previously invalid edge and corner areas, enhancing viewing quality by ensuring consistent light emission and coverage, thus achieving borderless display effects.
Implementation Method 1
A prism module comprising a first prism located on the edge area of a display area and a second prism on the frame area of the display
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
A display device includes a display and a prism module (100). The display has a display area and a frame area surrounding the display area. The display area has a plurality of corners. The prism module includes a first prism (110) and a second prism (120). The first prism is located on an edge area of the display area. The first prism includes a plurality of first corner portions (112). Each first corner portion is correspondingly arranged in a corner of the display area. Each first corner portion has a first free-form curved surface (112S1). The second prism is located on the frame area and is conformally disposed beside the first prism. The second prism includes a plurality of second corner portions (122). Each second corner portion has a second free-form curved surface (122S1). The second free-form curved surface faces the first free-form curved surface. A prism module is also provided.