Alternating White and Color Pixels for Display Light Efficiency
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Solution Overview
Problem
Conventional liquid crystal displays face a trade-off between achieving high true color and high light efficiency, as thick color filter layers required for true color result in lower light transmittance.
Innovation Solution
A display panel with alternately arranged primary color and white pixels, connected to different gate lines, is used in conjunction with a field sequential driven backlight source, allowing light to be transmitted directly through white pixels and maintaining high true color, while reducing the number of data lines needed for the same resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thick color filter layer is used to achieve high true color, then color display quality is improved, but light transmittance deteriorates
Solution Approach 1:
The display panel is divided into different pixel types (white pixels and colored pixels) with distinct functions. White pixels are dedicated to displaying white color and transmitting light, while colored pixels display other colors. This segmentation allows the removal of thick color filter layers from white pixels, thereby improving light transmittance while maintaining color accuracy through the colored pixels.
Solution Approach 2:
The patent introduces a new dimension to the pixel arrangement by incorporating white pixels alongside colored pixels in a multi-subpixel configuration. This dimensional expansion in pixel structure enables the system to achieve both high light transmittance (through white pixels without thick color filters) and high color accuracy (through colored pixels with appropriate color filters).
2Device complexity
If the number of data lines is reduced, then device complexity is lowered, but achieving the same resolution becomes more difficult
Solution Approach 1:
The patent merges the functionality of multiple data lines by using a shared data line structure where one data line serves multiple pixel types (white pixels and colored pixels). This merging reduces the total number of data lines required while maintaining the ability to independently control different pixel types through the gate line structure, thereby reducing device complexity without sacrificing display resolution.
Solution Approach 2:
The gate line structure is designed with multi-functionality, where gate lines are configured to selectively control different types of pixels (white pixels and colored pixels) in different rows. This universal gate line structure enables the system to achieve high resolution control with fewer dedicated control lines, reducing overall device complexity while maintaining display quality.
Data Source
AI summary
The disclosure provides a display panel, a liquid crystal display and a driving method therefor. In the display panel, each of rows and columns of pixels includes primary color pixels and white pixels arranged alternately; primary color pixels and white pixels in each row are electrically connected with different gate lines; primary color pixels in each odd-numbered row have third color, primary color pixels in each even-numbered row are arranged to alternate the first and second colors, and in any two adjacent even-numbered rows, colors of two primary color pixels located in one same column are different from each other; or, primary color pixels in each even-numbered row have third color, primary color pixels in each odd-numbered row are arranged to alternate the first and second colors, and in any two adjacent odd-numbered rows, colors of two primary color pixels located in one same column are different from each other.