Mass transfer roller transfer printing transfer technology
A roller, a huge amount of technology, applied in the field of transfer printing, can solve problems such as no longer applicable, and achieve the effect of improving quality and improving transfer yield
Inactive Publication Date: 2021-12-07
广西软视科技股份有限公司
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Problems solved by technology
[0003] In the packaging process of traditional LEDs, vacuum suction is mainly used for transfer, but because the vacuum tube can only reach about 80 μm under the physical limit, and the size of Micro LED is basically less than 50 μm, so the vacuum suction method is no longer applicable in the era of Micro LED
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] see Figure 1-2 , the present invention provides a technical solution for mass transfer roller transfer technology:
[0030] according to figure 1 shown, including the following steps:
[0031] S1: Control the contact between the PDMS pressure roller and the device to be transferred through the roll transfer system, and feed back the alignment in real time through the microscope installed on the side of the substrate and the receiver;
[0032] S2: Co...
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The invention discloses a mass transfer roller transfer printing transfer technology. The mass transfer roller transfer printing transfer technology comprises the following steps: S1, controlling a PDMS pressing roller to make contact with a to-be-transferred device through a roll transfer system, and feeding the alignment degree back in real time through a microscope and a receiver which are installed on the side face of a substrate; S2, controlling a PDMS compression roller to move on the Micro LED on the donor substrate, and accurately transferring the Micro LED to the surface of the PDMS compression roller by optimizing the clamping force between the donor substrate and the PDMS compression roller; and S3, transferring the PDMS compression roller with the Micro LED to a position corresponding to the TFT on the receiver substrate, and determining that the TFT is accurately aligned with the Micro LED through a microscope on the side surface of the substrate. According to the invention, the PDMS compression roller is controlled by the roll transfer system to adsorb the Micro LED on the donor substrate, then the Micro LED is transferred to the receiver substrate, and the adsorbed Micro LED is adhered to the corresponding position of the TFT on the receiver substrate by controlling the pressure of the PDMS compression roller and the receiver substrate, so that the transfer yield of the Micro LED is effectively improved, and the product quality is improved.
Description
technical field [0001] The invention relates to a printing transfer technology, in particular to a transfer printing transfer technology of a mass transfer roller, which belongs to the technical field of LEDs. Background technique [0002] Micro-LED was first invented in 2000 by Professor Hong Xing of Kansas State University and Professor Jingyu Lin of Texas Tech University. [0003] In the packaging process of traditional LEDs, vacuum suction is mainly used for transfer, but because the vacuum tube can only reach about 80 μm under the physical limit, and the size of Micro LED is basically less than 50 μm, so the vacuum suction method is no longer applicable in the era of Micro LED. Contents of the invention [0004] The purpose of the present invention is to provide a mass transfer roller transfer technology to solve the traditional LED packaging process proposed in the above background technology, which mainly uses vacuum suction for transfer. However, since the vacuum ...
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Login to View More IPC IPC(8): H01L33/00H01L21/67H01L21/68H01L21/683H01L25/075
CPCH01L33/005H01L21/681H01L21/683H01L25/0753H01L21/67144H01L2933/0008
Inventor 李志
Owner 广西软视科技股份有限公司