Photovoltaic Cell Integration in LCD Backlight Modules
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Solution Overview
Problem
Current liquid crystal display (LCD) manufacturing techniques are inefficient in utilizing backlight module light energy, leading to significant waste, and existing photovoltaic cell integration methods are complex, costly, and prone to corrosion, shortening the photovoltaic cell's lifespan.
Innovation Solution
A method for manufacturing a liquid crystal display module with a photovoltaic cell involves forming a photovoltaic cell on a substrate with layers such as indium tin oxide, monocrystalline or polysilicon, and aluminum, and integrating it into the LCD panel using a simple process with sealant protection to harness backlight energy and reduce external power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If photovoltaic cells are integrated into the liquid crystal display panel using existing techniques, then photo energy utilization is improved, but manufacturing complexity increases and manufacture cycle is extended
Solution Approach 1:
The patent merges the photovoltaic cell manufacturing process with the liquid crystal display panel manufacturing process by forming the photovoltaic cell directly on the back surface of the TFT substrate during the array process. This integration eliminates the need for separate photovoltaic cell fabrication and assembly steps, thereby reducing manufacturing complexity while maintaining effective photo energy utilization.
Solution Approach 2:
The patent applies preliminary action by forming the photovoltaic cell structure on the TFT substrate before the cell assembly process. The photovoltaic cell is prepared in advance on the back surface of the TFT substrate, allowing it to be integrated into the display panel without extending the manufacture cycle.
2Loss of energy
If photovoltaic cells are integrated into the liquid crystal display panel using existing techniques, then photo energy utilization is improved, but manufacture cost is increased
Solution Approach 1:
The patent combines the photovoltaic cell fabrication with the existing LCD manufacturing process, eliminating the need for separate production lines and assembly steps. This integration reduces manufacturing costs by utilizing existing equipment and process infrastructure while achieving effective photo energy utilization.
3Device complexity
If photovoltaic cells are exposed to external environment, then manufacturing simplicity is maintained, but corrosion from humidity and oxygen shortens lifespan
Solution Approach 1:
The patent embeds the photovoltaic cell within the liquid crystal display panel structure by forming it on the back surface of the TFT substrate and sealing it with the backlight module. This nesting approach protects the photovoltaic cell from external humidity and oxygen while maintaining manufacturing simplicity through integration.
Solution Approach 2:
The patent uses the backlight module and sealant as intermediary protective layers between the photovoltaic cell and the external environment. These intermediaries prevent direct exposure to humidity and oxygen, extending the photovoltaic cell lifespan without complicating the manufacturing process.
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 effectively utilizes backlight energy, reduces external power consumption, and extends the photovoltaic cell's lifespan by protecting it from humidity and oxygen corrosion, thereby enhancing the overall efficiency and cost-effectiveness of the LCD module.
Implementation Method 1
A photovoltaic cell is a device that directly converts photo energy into electrical energy through photoelectrical effect or photochemical effect
Implementation Method 2
A photovoltaic cell is a device that directly converts photo energy into electrical energy through photoelectrical effect or photochemical effect
Implementation Method 3
the liquid crystal molecules are controlled to change direction by application of electricity to the glass substrates in order to refract light emitting from the backlight module
Implementation Method 4
The LED light bar emits light that enters a light guide plate (LGP) through a light incident face of the light guide plate and is projected out through a light emergence face of the light guide plate, after being reflected and diffused
Implementation Method 5
The LED light bar emits light that enters a light guide plate (LGP) through a light incident face of the light guide plate and is projected out through a light emergence face of the light guide plate, after being reflected and diffused
Data Source
AI summary
The present invention provides a method for manufacturing liquid crystal display module with photovoltaic cell, which includes: (1) providing a substrate and a liquid crystal display panel; (2) forming a transparent conductive layer on the substrate through sputtering; (3) forming a first matrix, which is arranged to stay away from a pixel aperture of the liquid crystal display panel and is located below the TFT arrays; (4) forming a photovoltaic layer on the transparent conductive layer through chemical vapor deposition; (5) forming a second matrix corresponding to the first matrix; (6) forming a metal layer on the photovoltaic layer through sputtering; (7) forming a third matrix corresponding to the second matrix so as to form a photovoltaic cell on the substrate; (8) applying sealant to the substrate around the photovoltaic cell; and (9) bonding the substrate and the liquid crystal display panel to each other and curing the sealant.