Micro-LED Display Layout for Precise Brightness Control
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Solution Overview
Problem
Existing display technologies, such as TFT-LCD and OLEDs, suffer from high power consumption and inefficient brightness regulation, with OLEDs facing issues like increased power consumption, response speed deterioration, and high manufacturing costs.
Innovation Solution
A display apparatus utilizing micro-light emitting diodes (LEDs) with a TFT panel unit, where LEDs are arranged on a substrate and connected via an anisotropic conductive film, allowing for precise brightness control and reduced power consumption, using nitride semiconductors for high efficiency and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If TFT-LCD uses one LED as light source for many pixels, then device complexity is reduced, but power consumption increases and brightness regulation precision deteriorates
Solution Approach 1:
The invention divides the display into multiple sub-pixels (red, green, blue) with individual LED light sources for each sub-pixel. This segmentation allows independent control of each sub-pixel's brightness, enabling precise brightness regulation and reduced power consumption by activating only necessary pixels, while maintaining manageable device complexity through modular architecture.
2Use of energy by moving object
If OLED divides screen into several regions for brightness control, then power consumption is reduced, but brightness regulation precision deteriorates
Solution Approach 1:
The invention segments the display into fine-grained sub-pixels (red, green, blue) rather than coarse regions, enabling precise brightness control at the pixel level. Each sub-pixel has its own LED and can be independently controlled, achieving both low power consumption and high brightness regulation precision simultaneously.
3Measurement precision
If OLED uses high current driving through PWM, then brightness control is improved, but response speed deteriorates and lifespan decreases
Solution Approach 1:
The invention employs PWM (pulse width modulation) with optimized duty cycles to control LED brightness. By using periodic on-off switching at high frequencies, precise brightness control is achieved without requiring high current continuous driving, thereby maintaining fast response speed and extending device lifespan while achieving accurate brightness regulation.
4Measurement precision
If AM OLED connects TFTs for each pixel, then brightness control precision is improved, but manufacturing cost increases and uniformity deteriorates
Solution Approach 1:
The invention segments the display into sub-pixels with individual LED sources and simplified driving circuits. By using inorganic LED technology with fewer process steps compared to OLED, manufacturing complexity and costs are reduced while maintaining precise brightness control through independent sub-pixel addressing.
Solution Approach 2:
The invention changes the material parameters from organic OLED materials to inorganic LED materials, which have superior uniformity and stability. This parameter change enables better manufacturing uniformity and lower costs while maintaining precise brightness control through the segmented sub-pixel architecture.
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 display apparatus achieves low power consumption, high resolution, and efficient brightness regulation, suitable for wearable devices and smartphones, while reducing manufacturing complexity.
Implementation Method 1
A light emitting diode refers to an inorganic semiconductor device configured to emit light through recombination of electrons and holes
Implementation Method 2
emit light through recombination of electrons and holes
Implementation Method 3
connected via an anisotropic conductive film
Data Source
AI summary
A display apparatus includes a support substrate, a plurality of light emitting structures regularly arranged on the support substrate, and a wavelength conversion part disposed on the plurality of light emitting structures. The wavelength conversion part includes light transmitting portions and blocking portions, the light transmitting portions being disposed on the light emitting structures, respectively, and each of the light transmitting portions including a phosphor for converting a wavelength of light emitted from the corresponding light emitting structure. The support substrate includes a plurality of conductive patterns electrically connected to the light emitting structures, and the light emitting structures are coupled to the plurality of conductive patterns.