Multi-view Display Panel Light Block and Lens Assembly
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Solution Overview
Problem
Conventional multi-view display panels suffer from degraded display characteristics due to light bleeding between viewing zones and are difficult to assemble, particularly with optical lens panels.
Innovation Solution
The use of a flat panel display with a light block featuring etched grooves or a baffle layer to prevent light from one pixel from entering neighboring zones, combined with a diffuser and layered lenses to create unique beamlets for each viewer, along with a bezel alignment to minimize bezel appearance when panels are tiled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional MV display panels display different content in respective viewing zones, then multiple viewers can simultaneously perceive different messages, but light bleeding occurs between viewing zones causing degraded display characteristics
Solution Approach 1:
The patent extracts and removes the harmful light bleeding between viewing zones by introducing light blocking structures (black matrix, light blocking layers) that selectively block stray light while preserving the desired light transmission for each viewing zone. This extraction of harmful light paths resolves the contradiction by maintaining multi-view capability while eliminating the degradation of display characteristics.
Solution Approach 2:
The patent introduces intermediary light controlling elements (diffusers, light blocking layers, optical films) between the display panel and viewers. These intermediaries selectively guide light to appropriate viewing zones and block light from entering incorrect zones, thereby preventing light bleeding while maintaining the multi-view functionality and display quality.
2Adaptability or versatility
If optical lens panels are assembled in conventional MV display panels, then multi-view functionality is achieved, but assembly becomes difficult
Solution Approach 1:
The patent merges the optical lens panel assembly with the display panel structure by integrating lenses directly into the display stack. This consolidation reduces the number of separate components and simplifies the assembly process, making it easier to manufacture while maintaining multi-view functionality.
Solution Approach 2:
The patent transitions from conventional planar display architecture to a three-dimensional stacked architecture where lenses are positioned in layers above the display panel. This dimensional change allows for more compact integration and simplifies assembly by enabling lens panels to be stacked directly onto the display without complex alignment mechanisms.
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 configuration enhances display quality by reducing light bleeding and simplifies assembly, resulting in improved display characteristics and easier assembly of multi-view display panels.
Implementation Method 1
a diffuser arranged between the FPD and the plurality of lenses
Implementation Method 2
The grooves may be filled with an opaque material to absorb stray light
Implementation Method 3
a plurality of lenses configured to image the FPD. Each of the plurality of FPD pixels, when imaged through one of the plurality of lenses, forms a beamlet that is emitted in a direction unique from other beamlets
Implementation Method 4
A coefficient of thermal expansion of the cover layer of the FPD may be configured to correspond to a coefficient of thermal expansion of an internal layer of the FPD to mitigate misalignment of the grooves relative to the FPD pixels due to thermal expansion or contraction
Data Source
AI summary
A multi-view (MV) display panel includes a flat panel display (FPD) having FPD pixels, and lenses configured to image the FPD. Each of the FPD pixels, when imaged through one of the lenses, forms a beamlet that is emitted in a direction unique from other beamlets formed by other FPD pixels through the lens. The lens and the FPD pixels which, when imaged through the lens, form beamlets emitted in different directions collectively configure an MV pixel. Each of the FPD pixels includes multiple sub-pixels. The MV display panel also includes a diffuser arranged between the FPD and the lenses, and a light block configured to isolate a diffusion of the multiple sub-pixels of each FPD pixel from its neighboring FPD pixels. The FPD may be backlit using custom lighting and optics. Lens elements may be staggered in a manner that facilitates assembly of the lenses.