Quantum Rod Polarized Light Source for LCD Panel Thickness Reduction
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Solution Overview
Problem
Current liquid crystal display panels have low light utilization due to the limited transmittance of polarization sheets, which requires thickening the panel with additional components like quantum rod layers and backlight sources, and suffer from poor polarization light transformation efficiency.
Innovation Solution
A liquid crystal display panel with a polarized light source structure comprising a first and second electrode layer and a quantum rod contained layer, where the quantum rods emit linearly polarized light parallel to the absorption axis of the polarization sheet, reducing the need for a backlight source and enhancing light utilization by directly emitting polarization light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a quantum rod contained layer is added to the polarization sheet to increase light penetration, then light utilization rate of the backlight source is improved, but the display panel thickness increases
Solution Approach 1:
The patent merges the polarization sheet and quantum rod contained layer into a single integrated structure. The quantum rod layer is positioned between the polarization sheet and the backlight source, allowing the same component to perform both polarization and light wavelength transformation functions, thereby eliminating the need for separate layers and reducing overall panel thickness while maintaining improved light utilization.
Solution Approach 2:
The polarization sheet is enhanced with multi-functionality by incorporating quantum rods that can transform incident light wavelengths. This allows the polarization sheet to simultaneously perform its traditional polarization function and the additional function of wavelength transformation, reducing the need for separate functional layers and components.
2Use of energy by moving object
If a quantum rod contained layer is added to the polarization sheet to transform non-polarization light to polarization light, then light utilization rate is improved, but the transformation efficiency remains poor
Solution Approach 1:
The patent introduces an orientation layer as an intermediary component between the quantum rod contained layer and the polarization sheet. This orientation layer ensures proper alignment of the quantum rods with the absorption axis of the polarization sheet, optimizing the transformation efficiency of polarization light and improving the overall productivity of the system.
Solution Approach 2:
The patent optimizes the orientation and alignment parameters of the quantum rods within the contained layer. By controlling the orientation of quantum rods to be parallel to the absorption axis of the polarization sheet, the transformation efficiency of polarization light is significantly improved, addressing the productivity issue.
3Ease of manufacture
If the polarization sheet is designed to absorb light parallel to its absorption axis, then polarization function is achieved, but transmittance is limited to 50% causing energy waste
Solution Approach 1:
The patent recovers the light energy that would otherwise be wasted by the traditional polarization sheet. The quantum rod contained layer captures the absorbed light and re-emits it at a different wavelength, allowing this previously lost energy to be recovered and utilized, thereby reducing energy waste while maintaining the polarization function.
Solution Approach 2:
The patent converts the harmful effect of light absorption (which causes energy loss in traditional polarization sheets) into a beneficial effect. The quantum rods absorb incident light and transform it into polarized light at a different wavelength, turning the previously harmful absorption into a useful polarization and wavelength transformation mechanism.
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 configuration increases light utilization by omitting the need for a backlight source and polarization sheet, while improving light transformation efficiency, thereby reducing panel thickness and enhancing display performance.
Implementation Method 1
a quantum rod contained layer between the first electrode layer and the second electrode layer; the quantum rod contained layer is configured to emit the linearly polarized light when a voltage is applied
Implementation Method 2
When light emitted by a backlight source passes through this polarization sheet, a component of the light whose polarization direction is parallel to an absorption axis of the polarization sheet will be absorbed
Data Source
AI summary
Embodiments of the present invention relate to a liquid crystal display panel and a method of manufacturing the same, and a display device. The liquid crystal display panel includes: an array substrate and an opposite substrate, a polarized light source structure disposed on a side of the array substrate and capable of emitting linearly polarized light; and a polarization sheet disposed on the opposite substrate; wherein the polarized light source structure includes a first electrode layer, a second electrode layer and a quantum rod contained layer therebetween; the quantum rod contained layer may emit linearly polarized light a polarization direction parallel to an absorption axis of the polarization sheet.