Transparent Display Waveguide Slope Pattern Segmentation
Solution Overview
Problem
Existing display apparatuses face challenges in minimizing image quality distortion and residual images, particularly in allowing users to recognize objects behind the display panel while maintaining image display functionality.
Innovation Solution
A display apparatus comprising a light source emitting blue light, a waveguide plate with a slope pattern to redirect light, a display panel with white, red, green, and blue sub-pixels, and a controller to control drive voltage and power for transparent mode operation, along with polarizing plates and color filters to enhance transparency and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional display panel is used to display images, then image display functionality is achieved, but transparency is reduced and users cannot recognize objects behind the display
Solution Approach 1:
The display panel is divided into different regions: a first region with color filters for normal image display and a second region without color filters for transparent display. This segmentation allows the display to show images in some areas while remaining transparent in others, resolving the contradiction between image display functionality and transparency.
Solution Approach 2:
Different regions of the display panel have different optical properties. The first region has color filters that absorb specific wavelengths for image display, while the second region lacks color filters to allow light transmission for transparency. This local differentiation enables both image display and transparency to coexist in different parts of the same display.
2Measurement precision
If image quality distortion is minimized using conventional methods, then image clarity is improved, but residual images remain and transparency is compromised
Solution Approach 1:
The display panel segments image display and transparent display into separate regions. The first region handles image display with color filters to ensure image quality, while the second region provides transparency without color filters, eliminating residual images and maintaining high transparency.
3Illumination intensity
If a waveguide plate with slope pattern is added to redirect light, then transparency is improved, but device complexity increases
Solution Approach 1:
The waveguide plate incorporates slope patterns in specific regions to redirect light at angles that enhance transparency. This localized modification of the waveguide plate structure achieves the transparency improvement without requiring complete structural redesign, thus limiting the increase in device complexity.
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
The solution effectively reduces image distortion, allows users to recognize objects behind the display, and improves the aesthetic appeal by enabling a transparent mode without compromising image display.
Implementation Method 1
a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source
Implementation Method 2
a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate
Implementation Method 3
a red color filter into which a first phosphor is injected to convert the blue light emitted from the light source into a red light and scatter the red light
Implementation Method 4
a green color filter into which a second phosphor is injected to convert the blue light emitted from the light source into a green light and scatter the green light
Implementation Method 5
a blue color filter into which scatter is injected to scatter the blue light emitted from the light source
Data Source
AI summary
A display apparatus and a method of controlling the same are disclosed. The display apparatus includes: a light source configured to emit light having a wavelength less than or equal to a predetermined level; a waveguide plate having a slope pattern that allows the light emitted from the light source to be output to a left side or a right side about a vertical direction of an optical axis of the light source; and a display panel comprising a plurality of pixels, each of the plurality of pixels comprising a white sub pixel configured to transmit the light output from the waveguide plate.