LED Chip Display Device Removing Imaging Layers for High Contrast
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Solution Overview
Problem
Conventional display devices face challenges in achieving high contrast values and fast switching times, particularly due to the presence of additional imaging elements like LCD panels that hinder image refresh rates and increase thickness and absorption losses.
Innovation Solution
A display device comprising a matrix of pixels with individually driven light-emitting diode chips directly fixed and connected to a connection carrier, which omits further imaging elements, allowing for true black generation and rapid switching, enabling high contrast and efficient image refresh rates, and a thin, flat design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If additional imaging elements like LCD panels are used, then image generation capability is provided, but image refresh rate decreases and switching time increases
Solution Approach 1:
The patent removes additional imaging elements (such as LCD panels) from the display device, retaining only the light-emitting diode chips as imaging elements. This extraction eliminates the bottleneck that limited image refresh rates and switching times, directly resolving the technical contradiction by reducing device complexity to improve speed performance.
2Length of stationary object
If additional imaging elements are included, then image generation is enabled, but device thickness increases
Solution Approach 1:
By extracting and removing additional imaging elements from the display structure, the patent significantly reduces device thickness. The connection carrier with directly mounted LED chips replaces multi-layer imaging stacks, achieving a thin-profile display device while maintaining full imaging functionality.
3Loss of energy
If additional imaging elements are used, then image generation capability is provided, but light absorption losses increase
Solution Approach 1:
The patent eliminates additional imaging elements that cause light absorption losses. By using only light-emitting diode chips on the connection carrier, the system avoids the cumulative absorption losses that occur when light passes through multiple imaging layers, thereby improving energy efficiency and reducing loss.
4Manufacturing precision
If light-emitting diode chips are closely packed, then resolution increases, but manufacturing difficulty increases
Solution Approach 1:
The patent combines multiple functions into the connection carrier: it serves as the mechanical mounting substrate, the electrical connection board, and the driving circuit carrier. By integrating these functions, the system enables close packing of LED chips with precise electrical connections without requiring complex separate assembly processes, thus achieving high pixel density while maintaining ease of manufacture.
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 achieves high contrast values and fast image refresh rates, enabling suitable applications for three-dimensional representations and small, high-resolution displays with a very thin and efficient design by eliminating additional imaging elements and allowing close packing of light-emitting diode chips.
Implementation Method 1
the display device comprises a multiplicity of light-emitting diode chips. The light-emitting diode chips are, for example, colored light-emitting diode chips which generate colored light during operation
Implementation Method 2
it is possible for a light-emitting diode chip of the display device to generate UV radiation or blue light which is converted to light having a different color by a converter element assigned to the light-emitting diode chip
Data Source
AI summary
A display device is disclosed. In an embodiment a display device includes at least one connection carrier comprising a multiplicity of switches and a multiplicity of light-emitting diode chips, wherein each light-emitting diode chip is mechanically fixed and electrically connected to the connection carrier, wherein each switch is designed for driving at least one light-emitting diode chip, and wherein the light-emitting diode chips are imaging elements of the display device.