Naked Eye Dual Vision Display via Segmented Light Guide Plate
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Solution Overview
Problem
Current dual vision display technologies require viewers to wear different glasses to distinguish between two different information contents displayed on the same device, limiting the ability to achieve naked eye dual vision.
Innovation Solution
A display device incorporating a light guide plate with alternating first and second reflection structures, paired with LED light sources and a dual vision display refraction film, allows light from each source to be directed to specific pixel units on a display panel, enabling alternating frames to be displayed to different viewers without the need for glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional dual vision display technology is used, then two different information contents can be displayed on the same device, but viewers must wear different glasses to distinguish between the contents
Solution Approach 1:
The display panel is divided into first pixel units and second pixel units that are alternately arranged. The light guide plate is segmented with first reflection structures corresponding to first pixel units and second reflection structures corresponding to second pixel units. This segmentation allows different light paths for different viewers without requiring glasses, as each reflection structure directs light to its corresponding pixel units independently.
2Adaptability or versatility
If alternating frames are displayed to different viewers, then dual vision is achieved, but cross-talk between viewers occurs
Solution Approach 1:
The light guide plate is designed with local reflection properties: first reflection structures with first reflection coefficients and second reflection structures with second reflection coefficients. These local quality differences ensure that light from the first light source is primarily reflected to first pixel units and light from the second light source is primarily reflected to second pixel units, minimizing cross-talk while enabling simultaneous dual vision display.
3Manufacturing precision
If reflection structures are added to direct light to specific pixel units, then display resolution is enhanced, but device complexity increases
Solution Approach 1:
The first reflection structures and second reflection structures are integrated into a single light guide plate component, merging the light directing functions for both viewers into one element. This merging approach enhances display resolution by precisely directing light to specific pixel units while avoiding the need for separate complex light directing components for each viewer.
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
Enables naked eye dual vision by controlling light sources and reflection structures to direct content to appropriate viewers, enhancing display resolution and reducing cross-talk, thus allowing simultaneous viewing of different information without dedicated glasses.
Implementation Method 1
the light guide plate has a first reflection structure and a second reflection structure; the first reflection structure directs light emitted from the first light source to the pixel units of the display panel
Implementation Method 2
a dual vision display refraction film located between the light guide plate and the display panel; the light reflected by each of the first reflection face is introduced into the corresponding pixel unit by being refracted by the arc-shaped protrusions
Data Source
AI summary
A display device includes a display panel, a light guide plate, a first light source and a second light source. The display panel is provided with a plurality of pixel units arranged in an array, the light guide plate includes a first reflection structure and a second reflection structure. The first reflection structure reflects light emitted from the first light source to the pixel units of the display unit and the light is guided to a first view side after passing through the display panel. The second reflection structure reflects light emitted from the second light source to the pixel units of the display panel and the light is guided to a second view side after passing through the display panel. The above display panel is capable of achieving naked eye dual vision display without wearing dedicated glasses.