Mine Definition & Scope Intro

1. What is Minled?

LEDs are semiconductive diodes that can convert electrical energy into light energy in the field of opoelectronics, including gallium arseniure LED (red light), gallium phosphide (green light), gallium nitride led (blue light), etc. Minile refers to a size of 50-200 microns.LED chipsBetween a small height LED and a microled.

As the type of LED technology, the mini LED can be considerably improvedLCDThe performance of the panel is characterized by high resolution, high light, high contrast, a range of wide colors and are thinner and more economical. Currently, minled technology products have been used on the market to cover large and high -end televisionsmonitorlaptops and tablets.

2. Mine technology principle

TraditionLCD screenThe structure of (LCD) mainly includes two parts: LCD panel and backlight module.to showThe principle is that the light of backlighting emits a light, then the polarizer, the liquid crystal material and the filter are treated to obtain pixel points of different colors and brightness and obscurity, thus fulfilling the display function of the image. Traditional LCD screens will be equippedLED backlightBut the backlight of the screen often only supports the unified adjustment and cannot adjust the light and darkness of a certain area separately. Even a small number of LCD screens that support the backlight partition adjustments have large limits in the number of backlight partitions.

LCD structure diagram

Mine backlighting technology can be considered an improved version of traditional LCD screens. The LED backlighting beads can be made very small, so that more backlight beads can be integrated on the same screen, dividing them into thinner backlighting partitions. This is also an important difference between Minille backlighting technology and traditional LCD screens.

Milé enlightenment backlighting diagram

Mine development trend table

3. Minest applications

From the point of view of the application scenarios, the mini LEDs are mainly divided into two ways: direct display and backlight.

Direct minile display: uses the LED module with RGB three -color to reach the display effect of primary colors in three RGB colors. The concept of design consists in using the Minled chip directly as a display pixel point to provide the imagery unit of imaging to obtain the image display. It has advantages such as high brightness, a range of wide colors, high contrast, high -speed response, low energy consumption and a long lifespan, but due to factors such as high mass production technologies and immature mass production products, minile direct display products are currently mainly used in office meeting screens, internal trade displays and other screen markets Sizes of more than 100 inches, and it is difficult to popularize in the short term civilian market.

Mine direct display intention

Mini Backlight LED: It can be considered an improved version of traditional LCD screens. It uses Mini LED as a backlight module to match LCD screens for fine partitioning, and combines regional gradation technology (local gradation), quantum points technology, etc. To improve the display quality of LCD screens and gradually apply it to high -end screens, large 4K / 8K TVs, laptops and tablets. The use of the Minille + LCD backlight module is the consumer solution for the main products of panel manufacturers.

4. Specifications of products from the backlight chip a thousand

The main technical parameters of the Minled chip include:

Packaging method: formal, returned. Different packaging methods have a great impact on heat dissipation, so the current requirements are also different.

Different sizes have a certain impact on the requirements of devices for packaging and tests, production efficiency, etc.

Material structure: substrate structure, epitaxial structure

Optoelectronic performance: main wavelength, direct voltage, light intensity, etc. Milé work current is low, only a few milliamps

5. Application scenarios of the Source table

Judging by the entire minimum production process, the main application scenarios of the source table are in the LED device packaging process, as a minled electrical characteristics test module, integrated into the mini led package chip triage machine, and the testing machine of the backlight module.

The main electrical performance test indicators involved are:

Activate tension

Forward voltage

Inverted voltage

Leakage current, etc.