Light Emitting Display Panel Viewing Angle Switching
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Solution Overview
Problem
Existing light emitting display apparatuses mounted on vehicle dashboards have fixed viewing angles, causing discomfort for drivers and passengers when watching videos.
Innovation Solution
A light emitting display panel with viewing angle switching units in the non-display area, allowing each subpixel to switch between two different viewing angles by controlling the first and second light emitting units with respective transistors and lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed viewing angle is used in the display apparatus, then the device structure is simple, but the viewing comfort for drivers and passengers deteriorates
Solution Approach 1:
The display area is divided into multiple light emitting areas, and each light emitting area is further divided into multiple subpixels. Each subpixel contains separate first and second light emitting units with different viewing angles, allowing independent control of viewing angles for different content regions
Solution Approach 2:
The patent implements dynamic viewing angle switching by using control transistors to selectively activate either the first light emitting unit or the second light emitting unit in each subpixel, allowing the viewing angle to be adjusted in real-time based on the displayed content and user position
2Adaptability or versatility
If viewing angle switching units are added to enable flexible viewing angles, then viewing comfort is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple light emitting units within each subpixel structure, sharing common electrodes and control circuits. The first and second light emitting units are integrated into the same subpixel with shared transistor control, reducing the need for completely separate control systems
Solution Approach 2:
The control transistors serve multiple functions: they control both the first and second light emitting units through selective activation, and can operate in different modes (first mode for first viewing angle, second mode for second viewing angle), reducing the need for dedicated control circuits for each viewing angle
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 flexible viewing angle adjustment in each light emitting area, improving the viewing experience for both drivers and passengers by allowing different viewing angles for different image content.
Implementation Method 1
the first light emitting unit including a first lens having a first shape; and a second light emitting unit including a second lens having a second shape that is different from the first shape of the first lens
Data Source
AI summary
A light emitting display panel is disclosed that comprises a display area including light emitting areas, each of the light emitting areas including subpixels in the light emitting area. Viewing angle switching units are in a non-display area and each viewing angle switching unit is connected to the subpixels included in a corresponding light emitting area. Each subpixel includes a first light emitting unit driven by a first viewing angle control transistor that is controlled by the viewing angle switching unit that is connected to the subpixel where the first light unit includes a first lens having a first shape, and a second light emitting unit driven by a second viewing angle control transistor that is controlled by the viewing angle switching unit that is connected to the subpixel where the second light emitting unit includes a second lens having a second shape.