Mini LED
01 Basic Concepts
Mini LED refers to LED chips with a size on the order of 100 μm, which is between small-pitch LEDs and Micro LEDs, and is the result of further refinement of small-pitch LEDs. Among them, small-pitch LED refers to LED backlight or display products with the pitch of adjacent lamp beads below 2.5 mm.
Compared with the current mainstream display technology LCD. The mini LED has a better display effect, the response speed has been improved by an order of magnitude, the screen can be thinner, and the power consumption is greatly reduced.
Can extend battery life. Compared with OLED display, mini LED has faster response speed and higher high temperature reliability while maintaining excellent display effect and flexibility.
02 Mini LED application introduction
1. Backlight Mini LED products
2. Direct display Mini LED products
3. Plant lighting Mini LED products
03 Process comparison
1. Technical comparison
2. Equipment Capability - Product Compatibility
3. Mini LED welding effect
4. Equipment capacity - welding capacity
5. Device lighting effect
The traditional process cannot guarantee the consistency and flatness of the chip surface, resulting in the phenomenon of mura and edge measurement
The mass transfer technology of Keyi Technology adopts the press-fit single-point welding process to effectively ensure the consistency and flatness of the product
surface
. material
Pasting and tearing film process:
05 Slit type spraying device
Main actions: feeding → flux spraying → discharging
06 Chip arrangement and transfer device
Main actions: feeding→CCD identification→chip arrangement→discharging
Chip Transfer Calibration Process
Schematic Diagram of Transfer Arrangement
07 Chip laser batch welding device
Main actions:
feeding → CCD alignment → pressing → laser welding → discharging
Chip laser batch welding process
08 Test the AOI device.
Main actions: feeding → CCD alignment → optical detection
Electrical testing AOI inspection process:
09 Chip removal device
Main actions: feeding → CCD alignment → laser decrystallization → discharging
Chip Removal Process
10 Crystal Replenishment Rework Device
Main Actions:
Material Feeding → CCD Alignment → Dispensing and Tin Replenishment → Swing Arm Crystal Replenishment → Laser Welding → Discharging
Crystal rework process:
11 Automatic transmission device for the whole line
12 Solution overview
1. Mini LED mass transfer whole line solution
2. Advantages of line layout
Keyi Technology MiniLED mass transfer line
UPH 720K
covers an area of 65㎡
and total energy consumption is 100KWH
13 Main parameters
