Optical Conversion Member for Notched Display Backlight
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Solution Overview
Problem
Conventional liquid crystal display panels with notching technology cannot display images at the notch position, resulting in an incomplete full-screen effect.
Innovation Solution
A display device with a reinforcing backlight structure including a sub-backlight module and an optical conversion member, where the optical conversion member separates infrared and visible light, allowing the sub-backlight module to provide a backlight source for a notched area without obstructing the infrared sensor's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screen notching technology is used to arrange sensors below notches, then the infrared sensor can be positioned, but the display panel cannot display images at the notch position, resulting in an incomplete full-screen effect
Solution Approach 1:
The display panel is divided into a first display area and a second display area, where the first display area at least partially surrounds the second display area. The main backlight module provides backlight for the first display area, while the sub-backlight module provides backlight for the second display area through the optical conversion member. This segmentation allows independent optimization of each display region.
Solution Approach 2:
An optical conversion member is introduced as an intermediary component between the sub-backlight module and the second display area. This optical conversion member converts the backlight from the sub-backlight module and transmits it through the display panel at the notch position, enabling image display in the second display area while allowing the infrared sensor to function through the same region.
2Area of stationary object
If a sub-backlight module is added to provide backlight for the notched area, then image display in the notched area is enabled, but the device structure becomes more complex
Solution Approach 1:
The main backlight module and sub-backlight module are combined into a unified backlight system. The optical conversion member integrates multiple functions: it converts backlight for the second display area, allows infrared light transmission for sensor operation, and manages the interaction between visible and infrared light paths. This merging reduces the need for separate components for each function.
Solution Approach 2:
The optical conversion member serves multiple functions simultaneously: it acts as a backlight conversion element for visible light, an infrared transmission window for the sensor, and a structural integrator for the combined backlight system. This multi-functionality reduces overall device complexity despite adding the sub-backlight module.
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 the display of images in the notched area while maintaining the infrared sensor's functionality, achieving a fully functional and aesthetically complete screen.
Implementation Method 1
The first reflective film transmits one of infrared light and visible light, and reflects the other
Implementation Method 2
The optical conversion member separates infrared and visible light, allowing the sub-backlight module to provide a backlight source for the notched area without obstructing the infrared sensor's functionality
Data Source
AI summary
A display device is provided. The display device includes: a display panel including a first display area and a second display area, wherein the first display area at least partially surrounds the second display area; a main backlight module disposed corresponding to the first display area and providing a backlight source for the first display area; and a reinforcing backlight structure including a sub-backlight module and an optical conversion member, the optical conversion member is disposed at least corresponding to the second display area, and the optical conversion member is disposed on a light-emitting side of the sub-backlight module, and light emitted from the sub-backlight module enters the second display area after passing through the optical conversion member.