Image Display System White Green Light Sources Subpixel Segmentation
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Solution Overview
Problem
Active matrix liquid crystal display (LCD) systems face challenges in enhancing the NTSC ratio and image quality due to the inability to produce pure green color, leading to reduced image brightness and quality.
Innovation Solution
Incorporating a white-light source and a green-light source, with each pixel comprising red, blue, and white sub-pixels, where white light passes through all sub-pixels while green light only passes through the white sub-pixel, allowing for higher NTSC ratio and improved brightness without increasing filter layer thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the thickness of the filter layer is increased to increase the NTSC ratio, then the color purity is improved, but the image brightness is lowered
Solution Approach 1:
The pixel structure is segmented into multiple sub-pixels (red, green, blue, and white sub-pixels) instead of using a single filter layer. This segmentation allows each sub-pixel to be optimized independently, with white sub-pixels providing high brightness and colored sub-pixels providing color purity, thereby resolving the contradiction between NTSC ratio and image brightness.
Solution Approach 2:
The invention uses a composite pixel structure combining multiple types of sub-pixels (red, green, blue, and white) within a single pixel unit. This composite approach allows the system to simultaneously achieve high color purity (through colored sub-pixels with optimized filter layers) and high brightness (through white sub-pixels that transmit more light), thus resolving the technical contradiction.
2Manufacturing precision
If the filter layer thickness is increased to achieve pure color, then the NTSC ratio is enhanced, but the image quality cannot be effectively enhanced due to reduced brightness
Solution Approach 1:
By segmenting the pixel into multiple specialized sub-pixels, the invention allows colored sub-pixels to use thicker filter layers for pure color (high NTSC ratio) while white sub-pixels compensate for brightness. This segmentation enables both color purity and overall image quality to be enhanced simultaneously.
Solution Approach 2:
The invention changes the structural parameters of the pixel by introducing white sub-pixels alongside colored sub-pixels. This parameter change allows the system to maintain thick filter layers in colored sub-pixels for color purity while the white sub-pixels provide additional light transmission, thereby enhancing both NTSC ratio and overall image quality.
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 enhances the NTSC ratio and image brightness, resulting in better color representation and display quality by compensating for the insufficient purity of green light, thereby improving the overall image display effect.
Implementation Method 1
The white light passes through a polarizer on the TFT substrate, the liquid crystal layer having the liquid crystals controlled to rotate, various color filter layers with different colors
Implementation Method 2
generating green light passing through the white sub-pixel of the pixels to form an image during the frame time
Implementation Method 3
The liquid crystal layer having the liquid crystals controlled to rotate
Data Source
AI summary
An image display system includes a white-light source, a green-light source and a plurality of pixels. The white-light source generates white light during a frame time, and the green-light source generates green light during the frame time. Each pixel has a red sub-pixel, a blue sub-pixel and a white sub-pixel.