Mini LED display

Mini LED solution

Mini LED显示器

TFT-LCD display composition

Mini LED显示器
Mini LED显示器
Mini LED显示器

First of all, let's make it clear. LED and IPS are not things in the same field. LED is a backlight technology. IPS and VA are panel technology. The composition of the display can be simply understood as backlight+panel (LCD glass)+drive board = display. The panel mainly determines the basic characteristics, such as whether it can reach 4K and whether it can reach 240Hz. The driver board is generally matched with the panel, and the manufacturer is tuned to make the panel achieve the best effect. For example, the monitors of the same panel can reach 240Hz, and the drive board is determined by the drive board. Backlight is to determine the display effect. When used, the screen is comfortable, bright, etc., and the biggest influencing factor is backlight.



OLED is called 'Organic Light-Emitting Diode'. The biggest difference between OLED and LCD is that it emitted in the auto. LCD requires LED backplanes and filters, while OLED can emit light.

In terms of an easy -to -understand metaphor, the principle of OLED seems to be 'electrical punishment' for organic materials. When the anode of the cathode, the organic material is 'emitted by electricity.' Because the red -green and blue three -primary color points in each pixel can be controlled by separate voltage, it does not require a large area of backlight as the 'bright source' of the screen, so this technology is also called self -luminous technology.

Although OLED is bright, low power consumption, and can bend, organic materials will oxidize, so the life span is relatively short, and color branding problems will occur. In addition, high cost and high technical content. At present, most of them are applicable to small screens, like mobile phones, like mobile phones, like mobile phones, like mobile phones, like mobile phones Screen.

Disadvantages: organic matter loss and short life. PMW lights cause screen flash.

Mini LED显示器

Micro LED

Mini LED显示器


Micro LED is LED's miniaturization and matrix technology. In short, the LED backlight sources are made of thin -film, tiny, and matrixized, which can make the LED unit less than 100 microns. Drive light (self -emitted) alone. Due to the stability of LED inorganic objects, no matter how much it is used, it can maintain consistency and stability, which is unmatched by OLED. At the same time, Micro LED also takes into account the characteristics of pure black, and it is a pixel -level pure black. This is more direct and pure than the partition backlight control of the MINI LED.

The advantage of Micro LED is that it comes from the Micro -level micron LED, and the difficulty also appears on it. At present, Micro LED mainly has three technical difficulties and problems. The quantum efficiency DROOP effect (limited valid light surface, low red LED efficiency), driving capacity matching problem (requires high current, low power -consuming driving materials), huge transfer problems (High process requirements, high accuracy requirements, high cost). The most important issue appears on the problem of huge transfer.

Mini LED

Mini LED显示器
Mini LED显示器


MINI LED is also known as the 'Asian MM Everbright Diode'. It uses a 100 ~ 200 micron -level LED crystal, which is a improved version of traditional LED backlight.

MINI LED technology is considered to be a transition technology between traditional LED and Micro LED. It can produce a display screen of 0.5-1.2 mm pixels with MINI LED, which is greatly better than the traditional LED screen. Common MINI LEDs can basically pass the certification of HDR1000, which can achieve the maximum brightness above 2000 Nit. MINILED currently refers to the MINILED LCD display module.

LED pixel spacing is aggressive at [0.1mm, 2.5mm] is generally called Mini-LED

Among them, LED pixel spacing [1.0mm, 2.5mm], also known as small spacing LED

MINI-LED backlight+LCD introduction: Principle introduction

Mini LED显示器
Mini LED显示器
Mini LED显示器

     MINI-LED LCD shows that it can achieve OLED-like pure black display, and can also support ultra-high brightness, ultra-high dynamic contrast, and realize HDR

Mini LED comparison ordinary LCD

Compared with OLED: higher brightness, higher reliability, longer life, better integrated black effect

Compared with traditional LCD: pure black display, OLED -like display effect, no Mura

PS: The following is the 12.3 -inch comparison platform in the two groups, the same signal source input

Mini LED显示器

Mini LED显示器

Mini-LED Backlight+LCD Introduction: Technical Challenge

Mini LED显示器
Mini LED显示器


MINI-LED LCD shown challenges: the uniformity of halo and white screen

It can be reduced through the algorithm, but it cannot be completely solved

Our technical advantage

Mini LED显示器

Factors affecting the PQ effect of the whole machine:

Hardware factors: 1. Fog/OC glass, 2. QD membrane and other membrane materials, 3. LED light board, 4.LED Driver IC

Software factor: 4. LD algorithm 5. Scaler/SOC image quality level

External conditions: 6. Special optical testing equipment 7.PQ expert training

Technical advantages:

Total solution, the algorithm has its own, you can customize development and debugging according to customer requirements and actual conditions

1. Halmon can be adjusted (but affect the contrast)

2. The number of partitions can be adjusted with the backlight module factory

3. Debug many common LED DRIVER ICs, rich experience

4. Scaler IC professional picture quality debugging

5. Combat use of the upper machine software (required for the device)

6. Total power limit, extend life, reduce calories

Lcoal Dimming

Scheme 1 (FHD and below)

· The entire set of solution agents, and realize the production faster

· Rich input interface, output interface LVDS up to 1080p60Hz

· LED lamp bead refresh rate is high and not flickering (can be refresh rate of about 1kHz)

· Self -run algorithm, no light

· Optional domestic/non -national production plan

Mini LED显示器

SCALER IC function

1. Conventional high -definition video input signal to turn into a dot -screen signal LVDS for our dedicated chip

2. Video signal resolution processing (Scaler up/Scaler down)

3. Color analysis processing (HDR, Gamma, etc.)

The role of LED driver IC

1. Receive MCU Send SPI control data

2. Convert the control data to drive LED lamps current to achieve brightness control

Lcoal Dimming

Scheme 2 (4K level)

▪ Comparison scheme 1 is the difference in the screen that can point higher than 1080P; comparison uses more expensive FPGAs, and the cost is more saved.

Mini LED显示器

Our professional chip function

1. Receive the LVDS signal of Scaler IC

2. Analyze the color brightness of the image, and analyze the brightness data of the corresponding LED lamp bead passed through the algorithm to send it to the MCU through the SPI

The role of MCU

1. Receive the SPI control data sent by our dedicated chip

2. Convert SPI control data to drive LED lamp bead current data to achieve brightness control

3. Map the corresponding partition


Mini LED显示器

Let us suppose

The red box is the first channel control of LED DRIVE IC.

The yellow frame is the third channel control of LED DRIVE IC in the second part.

The green frame is the second channel control of the LED DRIVE IC in the third part.

Because the brightness data passed by FPGA is the LED DRIVE IC 1-100 channel corresponding to the 1-100 region, the MCU needs to change the data of the LED DRIVE IC channel 2 and 3, which we need to refer to the mapping. So why not change the hardware of 2 and 3 channels, because the lamp board has to adjust the order for the wiring.


Mini LED灯板及模组

Mini LED显示器
Mini LED显示器