Rear Light Transmitting Module Prism Misalignment
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Solution Overview
Problem
Existing display devices face issues with uneven light compensation and glare, leading to eye discomfort, as the light compensation effect is not effective in covering the entire field of view due to inefficient light use.
Innovation Solution
A display device with a rear light transmitting module comprising a first and second transmitting layer with prisms, where the prisms are misaligned to increase the light emission towards a preset direction, enhancing the compensation light range and improving light utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light compensation apparatus is placed on the rear side of the display device, then ambient light compensation is provided, but the light compensation effect is insufficient and cannot cover the entire field of view
Solution Approach 1:
The patent introduces a rear light transmitting module with prisms that redirect light in multiple directions (upward and sideways) rather than only backward. This dimensional expansion of light propagation paths enables the compensation light to cover a wider area including the user's field of view, resolving the contradiction between providing ambient light compensation and achieving sufficient light coverage.
Solution Approach 2:
The patent uses prisms as intermediary optical elements to redirect and distribute light from the rear light source. The prisms act as mediators that transform the light direction, sending it toward the user's eye position and expanding the effective coverage area, thereby solving the problem of insufficient light distribution.
2Area of stationary object
If light is emitted in multiple directions for compensation, then coverage is improved, but light use efficiency decreases
Solution Approach 1:
The patent employs prisms with specific geometric characteristics (local quality) to selectively redirect light toward particular regions where it is needed. By optimizing the prism angles and positions, the system concentrates light energy into the user's field of view rather than uniformly distributing it, thereby expanding coverage while maintaining light use efficiency.
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 increases the compensation light range and improves ambient lighting, reducing eye discomfort by ensuring better light coverage and utilization, particularly at viewing angles of 40 degrees.
Implementation Method 1
The first transmitting layer has a plurality of first prisms arranged side by side and respectively protruding and facing the first light emitting surface... The second transmitting layer... has a plurality of second prisms arranged side by side and respectively protruding toward the first transmitting layer
Data Source
AI summary
A display device of the present invention includes a light source apparatus and a rear light transmitting module disposed opposite a first light emitting surface of the light source apparatus. The rear light transmitting module includes a first transmitting layer and a second transmitting layer. The first transmitting layer has a plurality of first prisms arranged side by side and respectively protruding toward the first light emitting surface. The second transmitting layer is overlapped with the first transmitting layer on one side thereof opposite the first light emitting surface, and has a plurality of second prisms arranged side by side and respectively protruding toward the first transmitting layer. A vertical projection range of the first prisms on the first light emitting surface is misaligned with a vertical projection range of the second prisms on the first light emitting surface.