Slim LCD Light Supplying Sheet Eliminates Backlight Unit
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Solution Overview
Problem
The existing manufacturing processes for liquid crystal displays (LCDs) are costly and do not easily accommodate slim form factors, as they require a separate backlight unit which complicates the manufacturing process.
Innovation Solution
A slim liquid crystal display apparatus is created by integrating a light supplying sheet with a support member, transparent conductive layer, and light emitting devices, along with a reflective layer, which eliminates the need for a separate backlight unit by directly attaching the light supplying sheet to the display panel, using a flexible substrate and attaching unit like silicon adhesive or tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a separate backlight unit is used to supply light to the liquid crystal panel, then the light supply function is achieved, but the device thickness increases and manufacturing complexity increases
Solution Approach 1:
The patent combines the backlight unit and light supplying sheet into a single integrated structure. The light supplying sheet serves both as a support member and as the light distribution component, eliminating the need for a separate backlight unit and reducing overall device thickness while maintaining effective light supply to the liquid crystal panel
Solution Approach 2:
The light supplying sheet is designed to perform multiple functions simultaneously: it acts as a support structure, a light distribution medium, and a mounting platform for light emitting devices. This multi-functionality replaces what would traditionally require separate components, reducing thickness and simplifying the overall structure
2Illumination intensity
If a separate backlight unit is used, then light supply is achieved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
By integrating the light supplying sheet with the support member and light emitting devices into a single assembly that attaches directly to the liquid crystal panel, the patent reduces the number of separate manufacturing steps. The integrated structure eliminates the need for separate backlight unit installation and alignment processes
Solution Approach 2:
The patent segments the light supply system into discrete functional elements (light emitting devices, transparent conductive layer, light supplying sheet) that can be manufactured independently and then assembled into a single integrated unit, simplifying both manufacturing and assembly processes
3Illumination intensity
If traditional backlight units are used, then adequate light supply is provided, but the device cannot achieve slim form factor
Solution Approach 1:
The patent employs thin film structures including a transparent conductive layer and a thin light supplying sheet that can be directly attached to the liquid crystal panel. These thin film components enable the device to achieve a slim form factor (0.5mm or less thickness) while still providing adequate light supply through the integrated light emitting devices
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 reduces manufacturing costs and achieves a slim size for LCDs by eliminating the need for a separate backlight unit, allowing for direct attachment and efficient light distribution to the display panel, resulting in a thickness of 0.5 mm or less.
Implementation Method 1
a transparent conductive layer on the support member
Implementation Method 2
a reflective layer under the light supplying sheet
Data Source
AI summary
Disclosed are an image display apparatus and a method of manufacturing the same. The image display apparatus includes a display panel displaying an image, a light supplying sheet provided under the display panel and supplying light to the display panel, an attaching unit attaching the light supplying sheet on the display panel, and a reflective layer under the light supplying sheet. The light supplying sheet includes a support member, a transparent conductive layer on the support member, and a plurality of light emitting devices on the transparent conductive layer.