Multi-Area Display Panel Viewing Angle and LED Mode Control
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Solution Overview
Problem
Display devices in vehicles face challenges in controlling the viewing angle to prevent distraction to drivers while providing information to passengers, and existing technologies do not efficiently manage the luminance and lifespan of light emitting diodes based on driving modes.
Innovation Solution
A display device with a display panel divided into areas, each containing first and second light emitting diodes and optical members, controlled by a mode controller and selector to adjust the driving mode, allowing separate and synchronized operation of diodes based on the driving mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light emitting diodes are operated simultaneously in all areas, then the display brightness and visibility are improved, but the luminous efficiency and lifespan of the light emitting diodes deteriorate due to continuous operation
Solution Approach 1:
The patent implements periodic action by alternately operating first and second light emitting diodes in different areas based on driving modes. In the first driving mode, first LEDs are activated in the first area while second LEDs remain off, and vice versa in the second driving mode. This periodic activation pattern reduces continuous operation stress on individual LED groups, thereby extending lifespan while maintaining display brightness through sequential illumination.
Solution Approach 2:
The patent applies local quality by dividing the display panel into distinct areas (first area with first LEDs, second area with second LEDs) and controlling each area's LED operation independently based on driving mode. This allows different regions to have different operational states, optimizing both brightness distribution and LED lifespan management across the display surface.
2Reliability
If different driving modes are implemented for different areas, then the luminous efficiency and lifespan management are improved, but the operational complexity and synchronization control deteriorate
Solution Approach 1:
The patent segments the display panel into multiple independent areas, each with its own LED group (first LEDs in first area, second LEDs in second area). This segmentation allows independent control of each area's LED operation based on driving modes, simplifying the management of luminous efficiency and lifespan while maintaining synchronization through unified mode selection signals that coordinate the operational states across segmented areas.
3Object-affected harmful factors
If viewing angle control is implemented to prevent driver distraction, then the driving safety is improved, but the information visibility to passengers deteriorates
Solution Approach 1:
The patent applies local quality by controlling different areas of the display with different driving modes to achieve localized viewing angle management. Areas visible to the driver can be restricted to necessary information with controlled emission, while areas visible to passengers can display additional content with different brightness characteristics, thereby preventing driver distraction while maintaining passenger visibility.
Data Source
AI summary
A display device may include a display panel having a first area, a second area adjacent to the first area in a first direction, and a third area adjacent to the second area in the first direction, and including first light emitting diodes, second light emitting diodes, first optical members, and second optical members. The display device may further include a mode controller configured to generate a mode selection signal corresponding to a driving mode of the display panel, and a mode selector configured to generate a selection signal based on the mode selection signal, and to supply the selection signal to the display panel. The first and second light emitting diodes and the first optical members may be disposed in each of the first, second, and third areas. The second optical members may be disposed in each of the second and third areas.