Mini-LED Backlight Eliminates Color Resist for Higher Transmittance
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Solution Overview
Problem
Liquid Crystal Display (LCD) devices using Mini-LED backlights have low transmittance due to color resists on the display panel, which deteriorates image quality.
Innovation Solution
A display device with a backlight module that directly emits red, green, and blue light, eliminating the need for a color resist layer on the display panel, and a driving method that controls the LEDs to emit these colors, improving light transmittance and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If color resists are arranged on the color film substrate to emit red light, green light and blue light, then the display device can display colors, but the transmittance becomes relatively low
Solution Approach 1:
The patent extracts and removes the color resist layer from the display panel structure. Instead of using color resists on the color film substrate, the invention uses a backlight module with red, green, and blue LED arrays that directly emit colored light, eliminating the need for color resists and thereby improving light transmittance while maintaining color display capability
Solution Approach 2:
The patent inverts the traditional LCD color generation approach. Instead of using a white backlight passing through color resists to generate colors, the invention uses colored backlights (red, green, blue LED arrays) that directly provide colors, reversing the conventional light path and color generation method to achieve higher transmittance
2Illumination intensity
If color resists are used on the display panel, then color display is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent removes the color resist layer and associated color film substrate structures, simplifying the display panel construction. The color display function is transferred to the backlight module, which uses red, green, and blue LED arrays, thereby reducing the number of layers and materials needed in the display panel and simplifying the overall manufacturing process
Solution Approach 2:
The patent segments the backlight module into separate red, green, and blue LED arrays, with each array independently controllable. This segmentation allows for modular manufacturing and assembly, where each color channel can be manufactured and tested separately before integration, potentially simplifying the overall manufacturing process compared to producing and assembling a complete color resist layer
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
The solution significantly increases light transmittance and achieves better image quality by allowing direct emission of colors from the backlight module, simplifying the manufacturing process and reducing production costs.
Implementation Method 1
A backlight module of the common Mini-LED adopts blue LED array chip
Implementation Method 2
the plurality of LEDs disposed on the substrate and configured to emit at least one color of red light, green light, and blue light
Data Source
AI summary
The present disclosure provides a display device, a driving method, and an electronic apparatus. The display device includes a backlight module including a substrate and a plurality of LEDs disposed on the substrate, and the plurality of LEDs being configured to emit light having at least one color of red, green, and blue; and a display panel, configured to display red light when the plurality of LEDs emits red light, to display green light when the plurality of LEDs emits green light, and to display blue light when the plurality of LEDs emits blue light. The display device does not require a color resist layer, thereby greatly improving the light transmittance of the display device.