Liquid Crystal Display Module White Sub-Pixel Light Transmittance
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Solution Overview
Problem
Existing liquid crystal display modules suffer from low light transmittance and luminance due to significant light loss through polarizing plates and color filter layers, leading to decreased picture quality and increased manufacturing costs when attempting to improve luminance by adding additional light sources.
Innovation Solution
Incorporating a liquid crystal panel with unit pixels featuring red, green, blue, and white sub-pixels, along with a light-guiding plate and a polarizing plate that includes holes corresponding to these sub-pixels to enhance light transmittance and luminance without the need for additional light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If additional light sources are added to improve luminance, then luminance of the liquid crystal panel is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent extracts and removes the lower polarizing plate from the display structure, eliminating the light loss it causes. By taking out this problematic component, the system achieves higher light transmittance and luminance without adding more light sources, thereby avoiding increased device complexity and manufacturing cost.
Solution Approach 2:
The patent changes the optical parameters of the remaining components, specifically making the polarizing plate and color filter layers have higher light transmittance properties. This parameter change allows more light to pass through the display stack, improving luminance without requiring additional light sources.
2Illumination intensity
If additional light sources are added to improve luminance, then luminance of the liquid crystal panel is improved, but manufacturing cost increases
Solution Approach 1:
By removing the lower polarizing plate, the patent eliminates a component that causes light loss. This simplifies the manufacturing process and reduces material costs while simultaneously improving luminance, as fewer components need to be assembled and aligned.
Solution Approach 2:
The patent modifies the light transmittance parameters of the polarizing plate and color filter layers to higher values. These parameter changes enable the existing components to transmit more light effectively, improving luminance without requiring additional expensive light sources or complex manufacturing processes.
3Illumination intensity
If additional light sources are added to improve luminance, then luminance of the liquid crystal panel is improved, but power consumption increases
Solution Approach 1:
By extracting and removing the lower polarizing plate, the patent eliminates a major source of light loss. This allows the existing backlight to deliver higher luminance without requiring increased power input, as the optical path efficiency is improved by removing the obstructive component.
Solution Approach 2:
The patent changes the optical parameters of the polarizing plate and color filter layers to achieve higher light transmittance. This parameter optimization allows the existing light source to produce higher luminance output with the same power consumption, effectively improving energy efficiency.
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 transmittance by 36% to 70% compared to traditional modules, improving picture quality while reducing manufacturing costs and power consumption.
Implementation Method 1
a light-guiding plate for changing a horizontal direction of incident light from the light source into a vertical direction
Implementation Method 2
a polarizing plate including a polarization area for polarizing the light outgoing from the liquid crystal panel
Data Source
AI summary
A liquid crystal display module is disclosed, which facilitates to improve luminance of a liquid crystal panel by enhancing a light transmittance, the liquid crystal display module comprising a liquid crystal panel with plural unit pixels, wherein each unit pixel includes red(R), green(G), blue(B), and white(W) sub-pixels, for converting incident light into colored light; a light source for supplying light to the liquid crystal panel; a light-guiding plate for changing a horizontal direction of incident light from the light source into a vertical direction; and a polarizing plate including a polarization area for polarizing the light outgoing from the liquid crystal panel, and a hole for transmitting the light therethrough.