Micro LED Backlight Display Module for High Contrast Low Power
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Solution Overview
Problem
Current thin-film transistor liquid crystal displays (TFT-LCDs) face challenges with low contrast due to limited design enhancements in double-layer panel configurations, which also increase power consumption.
Innovation Solution
A display module comprising a liquid crystal display panel bonded to a micro LED display panel, where the micro LED panel serves as a backlight, emitting white light and allowing precise control of brightness through sub-pixel adjustments, thereby eliminating the need for a traditional backlight module and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a double-layer panel design with two LCD panels is used to increase contrast, then contrast performance is improved to 100,000th level, but power consumption increases due to the additional backlight and panel layers
Solution Approach 1:
The patent merges the backlight function and display function into a single integrated structure where the micro-LED panel serves as both the light source and display element, eliminating the need for a separate backlight module in traditional LCD structures. This integration reduces power consumption while maintaining high contrast performance through precise local dimming control of the micro-LED sub-pixels.
Solution Approach 2:
The patent changes the light emission parameters by using micro-LED technology with independently controllable sub-pixels, enabling precise adjustment of backlight brightness for each pixel. This parameter control allows the system to achieve million-level contrast ratios by dynamically adjusting the intensity and timing of light emission from individual micro-LED sub-pixels.
2Illumination intensity
If a traditional backlight module is used in LCD panels, then uniform illumination is achieved, but power consumption increases and contrast ratio is limited
Solution Approach 1:
The patent segments the backlight into individual controllable micro-LED sub-pixels corresponding to each pixel location in the display panel. This segmentation allows independent control of light emission at each pixel, enabling precise local dimming that achieves uniform illumination where needed while consuming minimal power in dark regions, thereby achieving million-level contrast ratios.
3Adaptability or versatility
If micro LED display panel with multiple colors is used, then color display capability is improved, but manufacturing complexity and alignment precision requirements increase
Solution Approach 1:
The patent extracts the color display function from the backlight module itself by using micro-LED technology that can emit different colors directly. The micro-LED panel contains red, green, and blue sub-pixels that can be independently controlled to produce various colors, eliminating the need for color filters and complex color conversion layers in the LCD panel, thereby simplifying the overall structure while maintaining full-color display capability.
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 significantly enhances contrast to the millionth level by allowing precise brightness control, improving display performance while reducing power usage.
Implementation Method 1
a micro light-emitting diode (LED) display panel disposed under the liquid crystal display panel and bonded to the liquid crystal display panel, wherein the micro LED display panel only displays white color
Data Source
AI summary
The present application discloses a display module and a display device. The display module includes: a liquid crystal display panel; a micro light-emitting diode (LED) display panel disposed under the liquid crystal display panel and bonded to the liquid crystal display panel, wherein the micro LED display panel only displays white color; a first driving chip configured to drive the liquid crystal display panel to emit light and display; and a second driving chip configured to drive the micro LED display panel to emit light and display. Power consumption of the display module is reduced, and contrast of a double-layer display panel is significantly increased.