Infrared Light Source Unit for Selective Pixel Luminance Control
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Solution Overview
Problem
Display devices face challenges in efficiently displaying specific information, such as notifications, without disrupting the normal image display, leading to potential delays and image quality deterioration when using screen division or image switching methods.
Innovation Solution
A display device with a light source unit that irradiates infrared light to specific regions of the display panel, allowing for the display of specific symbols or information without altering the normal image display, by generating a leakage current in transistors and adjusting pixel luminance, and optionally using an optical member to distribute light uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If screen division is used to display notification information, then notification information can be displayed, but image quality deteriorates
Solution Approach 1:
The patent applies local quality by using infrared light to selectively modify only specific pixel regions (e.g., notification area) without affecting other display regions. The infrared light source unit targets predetermined pixel groups to generate leakage current locally, creating visual changes only where needed while preserving overall image quality in other areas.
2Loss of information
If image switching is used to display notification information, then notification information can be displayed, but user experience deteriorates due to temporary video interruption
Solution Approach 1:
The patent uses infrared light as an intermediary to convey notification information without interrupting the video content. The infrared light modulates pixel luminance in specific regions, allowing notification display as an overlay rather than requiring full image switching, thus maintaining continuous video playback and improving user experience.
3Loss of information
If signal processing algorithm is used to display notification on screen, then notification information can be displayed, but display delay occurs
Solution Approach 1:
The patent replaces complex signal processing algorithms with a direct optical control mechanism. Instead of using software-based image processing and rendering, the system uses infrared light sources to directly modulate pixel luminance through optical control, significantly reducing processing time and achieving faster notification display response.
4Loss of information
If light source unit irradiates infrared light to change pixel luminance, then specific information can be displayed without switching image, but device complexity increases
Solution Approach 1:
The patent achieves multi-functionality by using the infrared light source unit for multiple purposes: displaying notification information, maintaining image quality, and enabling rapid response without requiring separate hardware components for each function. The same infrared light sources that control pixel luminance also serve as the notification display mechanism, reducing overall device complexity despite the advanced functionality.
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 prompt and unobtrusive display of specific information on the screen without changing the normal image display, reducing delays and maintaining image quality by adjusting pixel luminance and using infrared light sources strategically.
Implementation Method 1
the infrared light may be irradiated to the transistor to generate a leakage current of the transistor
Data Source
AI summary
A display device including a display panel having a display area in which a plurality of pixels are arranged, and a light source unit overlapping the display panel and including at least one light source. The light source unit irradiates infrared light to a predetermined region within the display area when displaying an image on the display area to change the luminance of pixels disposed in the predetermined region.