WO2020248750A1 - 一种微型led的转移方法和显示面板 - Google Patents
一种微型led的转移方法和显示面板 Download PDFInfo
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- WO2020248750A1 WO2020248750A1 PCT/CN2020/089373 CN2020089373W WO2020248750A1 WO 2020248750 A1 WO2020248750 A1 WO 2020248750A1 CN 2020089373 W CN2020089373 W CN 2020089373W WO 2020248750 A1 WO2020248750 A1 WO 2020248750A1
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
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- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
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Definitions
- the embodiment of the present disclosure relates to a method for transferring micro LEDs and a display panel.
- Micro-Light-Emitting Diode (Micro-LED) display has the advantages of independent pixel control, self-luminescence, high brightness, wide color gamut, stable material performance and long life, so it has become the most promising next generation. New display technology.
- the embodiments of the present disclosure provide a method for transferring Micro-LEDs and a display panel, which can realize the transfer of LED dies while reducing or eliminating the gap between the LED dies and the target substrate.
- the bottom plate includes a plurality of through holes, and the hot melt adhesive film covers the through holes.
- the moving the adhesive substrate above the donor substrate, and moving the adhesive substrate in a direction close to the donor substrate, using The sticking of the sticking substrate to the plurality of LED dies on the carrier substrate includes: moving the sticking substrate to the top of the donor substrate, and performing alignment, so that one of the plurality of LED dies The die is directly opposite to one of the through holes on the bottom plate, and the sticking substrate is moved in a direction close to the donor substrate, and the sticking substrate is used to stick the plurality of LED dies on the carrier substrate.
- the moving the adhesive substrate above the donor substrate includes: moving the adhesive substrate above the donor substrate, And the bottom plate is closer to the plurality of LED dies than the hot melt adhesive film.
- forming a transparent protective film on the side of the plurality of LED dies far away from the target substrate includes: using an atomizing spray process on the plurality of The transparent protective film is formed on the side of the LED die away from the target substrate.
- the size of the protective film in a direction perpendicular to the target substrate is smaller than that of the hot melt adhesive film in a direction perpendicular to the target substrate. size.
- the hot melt adhesive film is an insulating material film.
- the target substrate is a circuit substrate.
- FIG. 5 is a schematic diagram of a structure of a bonded substrate provided by another embodiment of the present disclosure.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Led Device Packages (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Claims (21)
- 一种微型发光二极管(Light-Emitting Diode,LED)的转移方法,包括:提供供体基板,所述供体基板包括承载基板以及位于所述承载基板上阵列排布的多个LED晶粒;提供粘贴基板,所述粘贴基板包括底板以及设置在所述底板上的热熔胶膜;将所述粘贴基板移动至所述供体基板的上方,并向靠近所述供体基板的方向移动所述粘贴基板,利用所述粘贴基板粘贴所述承载基板上的所述多个LED晶粒,以使所述多个LED晶粒与所述承载基板分离;将粘贴有所述多个LED晶粒的所述粘贴基板移动至目标基板的上方,所述多个LED晶粒比所述粘贴基板更靠近所述目标基板,并进行对位使所述多个LED晶粒与所述目标基板上待设置所述多个LED晶粒的位置正对;将粘贴有所述多个LED晶粒的所述粘贴基板加热至第一温度,以使所述热熔胶膜熔化,所述多个LED晶粒与所述粘贴基板分离,所述多个LED晶粒转移至所述目标基板上,所述第一温度大于或等于所述热熔胶膜的熔化温度。
- 根据权利要求1所述的微型LED的转移方法,其中,所述底板包括多个通孔,所述热熔胶膜覆盖所述通孔。
- 根据权利要求2所述的微型LED的转移方法,其中,所述将所述粘贴基板移动至所述供体基板的上方,并向靠近所述供体基板的方向移动所述粘贴基板,利用所述粘贴基板粘贴所述承载基板上的所述多个LED晶粒,包括:将所述粘贴基板移动至所述供体基板的上方,并进行对位,以使所述多个LED晶粒与所述底板上的所述多个通孔分别正对,向靠近所述供体基板的方向移动所述粘贴基板,利用所述粘贴基板粘贴所述承载基板上的所述多个LED晶粒。
- 根据权利要求3所述的微型LED的转移方法,其中,所述通孔的在平行于所述承载基板的方向上的尺寸大于所述LED晶粒的在平行于所述承载基板的方向上的尺寸。
- 根据权利要求4所述的微型LED的转移方法,其中,所述将所述粘贴基板移动至所述供体基板的上方,包括:将所述粘贴基板移动至所述供体基板的上方,且所述底板比所述热熔胶膜更靠近所述多个LED晶粒。
- 根据权利要求5所述的微型LED的转移方法,其中,所述底板在垂直于所述承载基板的方向上的厚度小于所述LED晶粒在垂直于所述承载基板的方向上的厚度。
- 根据权利要求1-6任一项所述的微型LED的转移方法,其中,所述目标基板上待设置所述多个LED晶粒的位置处设置有导电胶;在所述多个LED晶粒与所述目标基板上待设置所述多个LED晶粒的位置正对之后,将粘贴有所述多个LED晶粒的所述粘贴基板加热至第一温度之前,所述微型LED的转移方法还包括:将粘贴有所述多个LED晶粒的所述粘贴基板与所述目标基板压合,以使所述多个LED晶粒的电极与所述目标基板上的所述导电胶连接。
- 根据权利要求7所述的微型LED的转移方法,其中,所述多个LED晶粒转移至所述目标基板上之后,所述微型LED的转移方法还包括:将所述目标基板加热至第二温度;所述第二温度大于或等于所述导电胶的熔化温度。
- 根据权利要求7或8所述的微型LED的转移方法,其中,所述第二温度大于所述第一温度。
- 根据权利要求7-9任一项所述的微型LED的转移方法,其中,所述导电胶包括锡膏。
- 根据权利要求8或9所述的微型LED的转移方法,其中,所述将所述目标基板加热至第二温度之后,所述微型LED的转移方法还包括:对所述目标基板进行降温,使流入到相邻LED晶粒之间的热熔胶固化。
- 根据权利要求1-11任一项所述的微型LED的转移方法,其中,所述多个LED晶粒转移至所述目标基板上之后,所述微型LED的转移方法还包括:在所述多个LED晶粒远离所述目标基板的一侧形成透明的保护膜。
- 根据权利要求12所述的微型LED的转移方法,其中,在所述多个LED晶粒远离所述目标基板的一侧形成透明的保护膜,包括:利用雾化喷射工艺在所述多个LED晶粒远离所述目标基板的一侧形成透明的所述保护膜。
- 根据权利要求12或13所述的微型LED的转移方法,其中,所述保护膜在垂直于所述目标基板的方向上的尺寸小于所述热熔胶膜在垂直于所述目标基板的方向上的尺寸。
- 根据权利要求12-14任一项所述的微型LED的转移方法,其中,所述LED晶粒在垂直于所述目标基板的方向上的尺寸大于或等于所述热熔胶膜在垂直于所述目标基板的方向上的尺寸。
- 根据权利要求1-15任一项所述的微型LED的转移方法,其中,所述热熔胶膜为绝缘材料膜。
- 根据权利要求1-16任一项所述的微型LED的转移方法,其中,所述目标基板为电路基板。
- 一种显示面板,包括:目标基板;以及多个微型LED晶粒,位于所述目标基板上,其中,相邻微型LED晶粒之间填充有热熔胶膜。
- 根据权利要求18所示的显示面板,其中,所述微型LED晶粒在垂直于所述目标基板的方向上的尺寸大于或等于所述热熔胶膜在垂直于所述目标基板的方向上的尺寸。
- 根据权利要求18或19所示的显示面板,其中,所述热熔胶膜为热塑性胶膜。
- 根据权利要求18-20任一项所示的显示面板,还包括在所述多个微型LED晶粒的远离所述目标基板的一侧设置保护膜,其中,所述保护膜在垂直于所述目标基板的方向上的尺寸小于所述热熔胶膜在垂直于所述目标基板的方向上的尺寸。
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US17/295,036 US12033882B2 (en) | 2019-06-10 | 2020-05-09 | Micro-LED transfer method and display panel |
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CN201910497258.XA CN110190014B (zh) | 2019-06-10 | 2019-06-10 | 一种Micro-LED的转移方法 |
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