Dual-View Display Color Filter Segmentation for Brightness
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Solution Overview
Problem
Dual-view displays face challenges in maintaining screen brightness without increasing power consumption, as existing solutions rely on increasing the output of the backlight, which leads to higher power consumption.
Innovation Solution
The display apparatus incorporates a color filter with white (W) added to primary colors, allowing for alternating light distribution and image signal correction to ensure brightness is maintained without increasing backlight output, using a parallax barrier and liquid crystal layer to alternate image display between users in different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the output of the backlight is increased to secure screen brightness, then the brightness of the screen is improved, but the power consumption is increased
Solution Approach 1:
The color filter is divided into first and second areas with different color component configurations. The first area includes color components of three primary colors (R, G, B), while the second area includes color components of three primary colors plus white color. This segmentation allows different regions to optimize for different viewing directions, improving overall brightness distribution without increasing backlight power consumption.
Solution Approach 2:
Different regions of the color filter are assigned different color component compositions tailored to specific viewing directions. The first area is optimized for one viewing direction while the second area is optimized for another viewing direction. This local optimization ensures that each region delivers appropriate brightness and color quality for its intended viewing angle without requiring increased overall backlight output.
2Adaptability or versatility
If a dual-view display structure with parallax barrier is used to display different images to different users, then the functionality for multiple users is improved, but the transmittance of irradiation light is reduced
Solution Approach 1:
The color filter is segmented into first and second areas that correspond to different viewing directions. Each area is configured with specific color components optimized for its designated viewing direction. This segmentation enables the display to maintain dual-view functionality while improving light transmittance in each specific direction, as each region efficiently utilizes the backlight for its intended purpose without competing for light in other directions.
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
This approach secures the brightness of the screen for users in different directions while minimizing power consumption and preventing image quality deterioration, suitable for applications like car navigation systems.
Implementation Method 1
a liquid crystal layer alternately displaying the first image and the second image in response to application of a voltage
Implementation Method 2
a parallax barrier distributing the irradiation light to the first direction and the second direction
Implementation Method 3
a color filter including a first area for the first image and a second area for the second image, through which the irradiation light transmitted through the liquid crystal layer is transmitted
Data Source
AI summary
A display apparatus is configured to allow a user positioned in a first direction to visually recognize a first image and to allow a user positioned in a second direction different from the first direction to visually recognize a second image. The display apparatus includes a display unit that alternately displays the first and second images; an irradiation unit that provides irradiation light; a color filter that respectively includes first and second areas for the first and second images, through which the irradiation light is transmitted; and a distribution unit that distributes the irradiation light transmitted through the first area of the color filter to the first direction and through the second area of the color filter to the second direction. The color filter includes color components of three primary colors and a white color.