Vehicle Transparent Display With Switchable Opaque Light Shielding
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Solution Overview
Problem
Current transparent OLED display devices applied to vehicle glass suffer from poor image viewing effects, especially in low grayscales, and fail to shield external heat and ultraviolet rays, causing strong light stimulation to passengers.
Innovation Solution
A display device with a substrate and light-emitting devices for display areas, and an electrophoretic color changing layer for transparent areas that can transition between opaque and transparent states, improving image quality and blocking external radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent display devices are used in vehicle glass, then transparency and visibility of external environment are improved, but ambient light transmission degrades display quality and image viewing effect
Solution Approach 1:
The electrophoretic color changing layer is configured to dynamically switch between transparent and opaque states based on operational requirements. When the display device is active, the layer transitions to an opaque state to block ambient light and enhance display quality. When inactive, it returns to a transparent state to maintain visibility of the external environment, thus resolving the contradiction between transparency and display quality.
2Illumination intensity
If transparent display devices are used in vehicle glass, then visibility is improved, but shielding capability against external heat and ultraviolet rays deteriorates
Solution Approach 1:
The electrophoretic color changing layer utilizes color change properties to switch between transparent and opaque states. In the opaque state, the layer effectively blocks harmful ultraviolet rays and heat while maintaining visibility of the display content. This allows the system to provide both visibility and protection against harmful radiation, resolving the contradiction between visibility and shielding capability.
3Illumination intensity
If transparent regions are used for external observation, then visibility of external environment is improved, but strong light transmission causes light stimulation to passengers
Solution Approach 1:
The electrophoretic color changing layer dynamically adjusts its optical properties based on the operational state of the display device. When the display is active, the layer transitions to an opaque state that allows passengers to view the display content while blocking excessive ambient light that would cause light stimulation. When the display is inactive, the layer becomes transparent to allow external observation, thus resolving the contradiction between external visibility and light stimulation prevention.
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
Enhances display quality, especially in low grayscales, while preventing strong light stimulation by switching to opaque state during image display and maintaining high transmittance for external observation when not in use.
Implementation Method 1
the electrophoretic color changing devices can transition between a transparent state and an opaque state
Implementation Method 2
a display panel including a substrate and a plurality of light-emitting devices disposed on the substrate
Data Source
AI summary
A display device and a vehicle are disclosed. The display device includes a display panel and an electrophoretic color changing layer disposed on one side of the display panel. The electrophoretic color changing layer includes a plurality of electrophoretic color changing devices, the electrophoretic color changing devices are disposed corresponding to transparent sub areas, and the electrophoretic color changing devices can transition between transparent and opaque states.