LEDInside's latest report "2018 Micro LED Next Generation Display Technology Market Report - 3Q18 Micro LED Transfer, Driver, Backplane and Application Requirements" discusses various display specifications and massive transfer, drive and back The corresponding relationship between boards and other technologies. Since the product characteristics and specifications of the display are not the same, whether it is a huge amount of transfer, movement, or backplane, it is necessary to correspond to the application characteristics of different display products. Therefore, for different display products in different fields, it may be that different technology manufacturers will lead the future development direction.

Micro LED giant transfer trend

Due to the current huge amount of transfer technology and the different technical characteristics, there may be a relatively suitable solution for different display products. At this stage, it can be roughly classified into several items, including Stamp Pick & Place; Laser Release; Roll to Plate; Fluidic Transfer, wafer bonding. These transfer techniques are different for the various specifications of the panel. For example, the size of the panel is related to whether the technology of massive transfer is suitable for expansion. The level of PPI is related to the precision of the massive transfer. In addition, Resolution is about the productivity of a huge amount of transfer technology. The size of the chip is related to the size limit of the transfer technology for the transfer target. Therefore, in the future, for different display products, there may be a relatively large amount of transfer technology to correspond.

Micro LED backplane application trends

The line-width line-to-line limit is from PCB to FPC > Glass > Si CMOS, so it varies with the limit of the line width of the backplane and is used to match the size of the display. Such as large-size display (Digital Display) and TV, because the display area is large and the pixel spacing is also large, there will be PCB and Glass options in the choice of backplane. In the medium-sized car display, the PCB with a large line width and a large line spacing is not used, and the line width limit is slightly smaller than the PCB's Glass and FPC. Small-sized mobile phones and watches are mainly used for glass and FPC backplanes for small and medium-sized display needs. The back-panel display requirements for micro-projection and display of augmented reality/virtual reality will be reduced to less than 30μm, so it will be based on Si CMOS backplanes with micro-linewidth and line-width semiconductor processing. The need for optical transmission of glasses will also have the application requirements of optical FPC.

Micro LED drive application trends

Due to the continuous improvement of display technology, the characteristics of Micro LED driver ICs are also different. The display of Micro LED driver ICs can achieve true 16-bit gray scale performance at high refresh rate, if used with HDR brightness enhancement technology. The Lighthouse controller clearly shows that the 16-bit picture has a smoother gradation change, a brighter light, and a darker darker effect.

Due to the large number of light sources, Micro LED displays can save PCB layout space and the number of driver ICs if a dedicated driver IC with integrated multi-channel design can be used.

When the Micro LED is turned on, its power supply can only be driven by 10nA. However, at this low current, there is an unstable low-gray state performance, which will cause the Micro LED to receive some of the same current and some light and slight The bright condition occurs and the design goal cannot be achieved. This is one of the important directions that the Micro LED driver IC must overcome.

2018 Micro LED Next Generation Display Technology Market Report - 3Q18 Micro LED Transfer, Drive, Backplane and Application Requirements

Key Technology Analysis of Micro LED

? Micro LED key technology

? Micro LED transfer patent development trend

? Micro LED backplane application trend

? Micro LED drive application trends

Micro LED Transfer Technology Analysis

? Three major transfer technology classifications

? Micro LED film transfer technology classification

? Pick and place transfer technology analysis

? Electrostatic adsorption V.S magnetic adsorption

? Phase change V.S Van der Waals

? Adhesive force and reaction force V.S Electrostatic adsorption force and reaction force

? Chip transfer and flipping V.S solid transfer

? Analysis of fluid assembly transfer technology

? Fluid dispersion transfer V.S fluid assembly

? Laser transfer technology analysis

? Laser ablation V.S laser stripping

? Laser beam multi-chip transfer V.S multi-beam transfer

? Analysis of roller transfer technology

? Roller transfer technology Rohinni V.S KIMM

? Micro LED product application specifications

? Selective comparison of Micro LED transfer technology

? Transfer application analysis - display

? Application Analysis of Transfer - TV

? Application analysis of transfer - vehicle display

? Application analysis of transfer - mobile phone

? Application Analysis of Transfer - Watch

? Application Analysis of Transfer - Augmented Reality / Virtual Reality

Micro LED backplane technology analysis

? Classification of backboard materials

? Hard backplane - Principle of operation of glass

? Hard backplane - Glass material properties

? Hard back panel - Comparison of glass material properties

? Hard backplane - printed circuit board

? Hard backplane - CMOS on Si

? Flexible backplane - non-optical FPC

? Flexible backplane - optical FPC

Key technologies of Micro LED

? LED driver solution - Basic introduction of LED driver power supply

? LED driver solution - why LED driver IC is required

? LED drive solution - LED voltage, current and luminous flux relationship

? LED drive solution - comparison of linear drive and switch drive

? LED drive solution - Switching power supply control technology classification

? LED driver scheme - The effect of switching power supply control PWM technology on LED color gradation

? Display drive solution - Comparison of active and passive drives

? Display drive scheme - scan mode and screen update rate

? Display drive solution - Small-pitch display problem point analysis

? TFT driver scheme - drive structure of thin film transistor

? TFT driver scheme - Analysis of interference factors affecting display quality

? OLED driver solution - passive drive (Passive Matrix / PMOLED)

? OLED driver solution - active drive (Active Matrix / AMOLED)

? Micro LED drive solution - Passive Matrix

? Micro LED drive solution - Active drive (Active Matrix)

? Micro LED driver solution - Micro LED driver IC features