CN112635384A - Micro LED array method based on ultrasonic vibration type mechanical arm - Google Patents
Micro LED array method based on ultrasonic vibration type mechanical arm Download PDFInfo
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- CN112635384A CN112635384A CN202011493942.XA CN202011493942A CN112635384A CN 112635384 A CN112635384 A CN 112635384A CN 202011493942 A CN202011493942 A CN 202011493942A CN 112635384 A CN112635384 A CN 112635384A
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
- B65G47/92—Devices for picking-up and depositing articles or materials incorporating electrostatic or magnetic grippers
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- H01L21/6831—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using electrostatic chucks
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Abstract
The invention discloses a Micro LED array method based on an ultrasonic vibration type mechanical arm, which comprises a bottom plate, a top plate connected with one end of the bottom plate through four support columns, a sliding grabbing mechanism arranged on the bottom surface of the top plate, a material tray arranged on the bottom plate and positioned below the top plate, an optical yield detection mechanism arranged at the other end of the bottom plate and a drying vibration mechanism arranged on the bottom plate and positioned between the material tray and the optical yield detection mechanism; and the Micro LEDs are vibrated in the vertical direction to perform electrostatic adsorption arrangement between the Micro LEDs and are vibrated in the horizontal direction to perform Micro LED transmission under the work of the controllable ultrasonic vibrator, and then the arrangement yield of the Micro LED array is ensured by utilizing an optical yield detection mechanism, so that the high-yield directional arrangement of the micron-sized Micro elements is realized.
Description
Technical Field
The invention relates to a Micro LED array method based on an ultrasonic vibration type mechanical arm.
Background
Micro LED (Micro light emitting diode) is designed to be thin-film, Micro-sized and arrayed, the size of the Micro LED is only about 1-10 mu m, and the Micro LED has the advantages of good stability and service life, low power consumption, high color saturation, strong contrast, high reaction speed and the like, and is widely applied to the field of display.
At present, the bottleneck limiting the development of the Micro LED display technology mainly comprises a mass transfer technology, and the mass transfer technology is an important technology for mass production of Micro-LED products, namely how to transfer a large number of Micro LEDs with a Micro scale to a large-size transfer plate.
Before the transfer of the Mirco LED monomers, the Mirco LED monomers need to be subjected to directional uniform arrangement, and an effective means for directionally arranging the micro-components with the size order and ensuring the arrangement yield does not exist at present.
Therefore, it is desirable to provide a device capable of aligning the micro devices with such dimensions and ensuring the yield of the alignment.
Disclosure of Invention
The invention aims to overcome the defects and provide a Micro LED array method based on an ultrasonic vibration type mechanical arm.
In order to achieve the purpose, the invention adopts the following specific scheme:
a Micro LED array method based on an ultrasonic vibration type mechanical arm comprises a bottom plate, a top plate connected to one end of the bottom plate through four support columns, a sliding and grabbing mechanism arranged on the bottom surface of the top plate, a material tray arranged on the bottom plate and located below the top plate, an optical yield detection mechanism arranged at the other end of the bottom plate and a drying and vibrating mechanism arranged on the bottom plate and located between the material tray and the optical yield detection mechanism;
the sliding and grabbing mechanism comprises a linear sliding component arranged on the bottom surface of the top plate, a vertical displacement component arranged on the output end of the linear sliding component and an ultrasonic magnetic grabbing head arranged on the output end of the vertical displacement component, wherein the linear sliding component is used for driving the ultrasonic magnetic grabbing head to move along the horizontal direction, the vertical displacement component is used for driving the ultrasonic magnetic grabbing head to move along the vertical direction, the ultrasonic magnetic grabbing head is connected to the vertical displacement component through a cantilever, one end of the cantilever is connected to the output end of the vertical displacement component, and the other end of the cantilever is connected to the ultrasonic magnetic grabbing head;
the ultrasonic magnetic grabbing head comprises a piezoelectric micro-motion piece, a first ultrasonic vibrator and a base body, wherein the piezoelectric micro-motion piece is arranged on a cantilever, the first ultrasonic vibrator is arranged on the piezoelectric micro-motion piece, the base body is arranged on the first ultrasonic vibrator, a plurality of micro-motion pieces are arranged at intervals along the length direction of the base body on the bottom surface of the base body, a linear magnetic electrode matched with the length of each micro-motion piece is fixed at the free end of each micro-motion piece, and the linear magnetic electrode is provided with an adsorption plane;
the drying and vibrating mechanism comprises a controllable ultrasonic vibrator, a trough, a U-shaped isolation cover and a static pressure nitrogen jet plate, wherein the controllable ultrasonic vibrator is arranged on a bottom plate, the trough is arranged on the controllable ultrasonic vibrator, the opening of the isolation cover faces downwards, two ends of the isolation cover are fixed on the controllable ultrasonic vibrator, and the static pressure nitrogen jet plate is fixed on the inner top surface of the isolation cover and is positioned above the trough;
the optical yield detection mechanism comprises a second ultrasonic vibrator, a light emitting source, an optical glass plate, a fluorescent plate support and a fluorescent receiving plate, wherein the second ultrasonic vibrator is arranged on the bottom plate and is attached to one end, away from the charging tray, of the controllable ultrasonic vibrator, the second ultrasonic vibrator is provided with a containing groove, the light emitting source is arranged in the containing groove, the optical glass plate is fixed on the containing groove and is located above the light emitting source, the fluorescent plate support is arranged on the second ultrasonic vibrator, and the fluorescent receiving plate is arranged on the surface, opposite to the optical glass plate, of the fluorescent plate support.
The cross section of the linear magnetic electrode is in a regular octagon shape, and the diameter of an external circle of the linear magnetic electrode is 2/3 of the distance between two pins of the Micro LED; the edges and corners of the linear magnetic electrode are provided with fillets, and the radius of each fillet is 1/8 of the diameter of the circumscribed circle of the linear magnetic electrode.
Wherein, the surface of silo is equipped with a layer of polytetrafluoroethylene coating.
Wherein the luminous source is an ultraviolet light source.
The optical yield detection mechanism further comprises a light splitting lens, and the light splitting lens is arranged between the light emitting source and the optical glass plate.
The invention has the beneficial effects that: according to the invention, the directional adsorption and grabbing of the Micro LEDs are realized by combining an ultrasonic Micro-vibration principle and an electromagnetic linear adsorption principle through a sliding grabbing mechanism, then the Micro LEDs are dried by using a static pressure nitrogen jet plate of a drying and vibrating mechanism, the Micro LEDs are vibrated in the vertical direction to perform electrostatic adsorption and arrangement among the Micro LEDs and are vibrated in the horizontal direction to perform Micro LED transmission under the work of a controllable ultrasonic vibrator, and then the arrangement yield of a Micro LED array is ensured by using an optical yield detection mechanism, so that the high yield directional arrangement of micron-sized Micro elements is realized.
Drawings
FIG. 1 is a schematic diagram of a Micro LED;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of the slip gripping mechanism of the present invention;
FIG. 4 is a schematic structural view of an ultrasonic magnetic gripper head of the present invention;
FIG. 5 is an enlarged partial schematic view at I of FIG. 4;
FIG. 6 is a schematic structural view of the dry vibration mechanism of the present invention;
FIG. 7 is a schematic structural diagram of an optical yield detection mechanism according to the present invention;
description of reference numerals: 1-a bottom plate; 2-a top plate; 3-a sliding grabbing mechanism; 31-a linear sliding component; 32-a vertical displacement member; 33-an ultrasonic magnetic gripper head; 331-piezoelectric micromotion piece; 332-a first ultrasonic vibrator; 333-base; 334-micro shaking pieces; 335-a linear magnetic electrode; 34-a cantilever; 4-material tray; 5-optical yield detection mechanism; 51-a second ultrasonic vibrator; 52-a light emitting source; 53-optical glass plate; 54-a fluorescent plate holder; 55-fluorescent receiver plate; 56-a beam splitting lens; 6-a drying vibration mechanism; 61-controllable ultrasonic vibrator; 62-material groove; 63-a shielding case; 64-static pressure nitrogen jet plate.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1, in order to facilitate the directional arrangement of the Micro LED, when the Micro LED is produced, a ferromagnetic material is deposited on the groove between the two leads to form a ferromagnetic deposition layer, so that the Micro LED is magnetic.
As shown in fig. 2 to 7, the Micro LED array method based on the ultrasonic vibration type manipulator according to the present embodiment includes a bottom plate 1, a top plate 2 connected to one end of the bottom plate 1 through four support columns, a sliding grabbing mechanism 3 disposed on the bottom surface of the top plate 2, a tray 4 disposed on the bottom plate 1 and below the top plate 2, an optical yield detection mechanism 5 disposed on the other end of the bottom plate 1, and a drying vibration mechanism 6 disposed on the bottom plate 1 and between the tray 4 and the optical yield detection mechanism 5;
the sliding and grabbing mechanism 3 comprises a linear sliding component 31 arranged on the bottom surface of the top plate 2, a vertical displacement component 32 arranged on the output end of the linear sliding component 31, and an ultrasonic magnetic grabbing head 33 arranged on the output end of the vertical displacement component 32, wherein the linear sliding component 31 is used for driving the ultrasonic magnetic grabbing head 33 to move along the horizontal direction, the vertical displacement component 32 is used for driving the ultrasonic magnetic grabbing head 33 to move along the vertical direction, the ultrasonic magnetic grabbing head 33 is connected to the vertical displacement component 32 through a cantilever 34, one end of the cantilever 34 is connected to the output end of the vertical displacement component 32, and the other end of the cantilever 34 is connected to the ultrasonic magnetic grabbing head 33;
the ultrasonic magnetic grabbing head 33 comprises a piezoelectric micromotor blade 331, a first ultrasonic vibrator 332 and a base body 333, wherein the piezoelectric micromotor blade 331 is arranged on the cantilever 34, the first ultrasonic vibrator 332 is arranged on the piezoelectric micromotor blade 331, the base body 333 is arranged on the first ultrasonic vibrator 332, a plurality of micro-vibrator blades 334 are arranged at intervals along the length direction of the base body 333 on the bottom surface of the base body 333, a linear magnetic electrode 335 matched with the length of each micro-vibrator blade 334 is fixed at the free end of each micro-vibrator blade 334, and the linear magnetic electrode 335 has an adsorption plane;
the drying vibration mechanism 6 comprises a controllable ultrasonic vibrator 61, a trough 62, a U-shaped isolation cover 63 and a static pressure nitrogen spray plate 64, wherein the controllable ultrasonic vibrator 61 is arranged on the bottom plate 1, the trough 62 is arranged on the controllable ultrasonic vibrator 61, the opening of the isolation cover 63 faces downwards, two ends of the isolation cover 63 are fixed on the controllable ultrasonic vibrator 61, and the static pressure nitrogen spray plate 64 is fixed on the inner top surface of the isolation cover 63 and is positioned above the trough 62;
the optical yield detection mechanism 5 comprises a second ultrasonic vibrator 51, a light emitting source 52, an optical glass plate 53, a fluorescent plate support 54 and a fluorescent receiving plate 55, wherein the second ultrasonic vibrator 51 is arranged on the bottom plate 1 and is attached to one end, away from the tray 4, of the controllable ultrasonic vibrator 61, the second ultrasonic vibrator 51 is provided with a containing groove, the light emitting source 52 is arranged in the containing groove, the optical glass plate 53 is fixed on the containing groove and is positioned above the light emitting source 52, the fluorescent plate support 54 is arranged on the second ultrasonic vibrator 51, and the fluorescent receiving plate 55 is arranged on the surface, opposite to the optical glass plate 53, of the fluorescent plate support 54.
In this embodiment, the linear sliding component 31 is a linear displacement motor, and drives the ultrasonic magnetic grasping head 33 to generate linear displacement in the horizontal direction, the vertical displacement component 32 includes a zigzag connecting plate, an electromagnetic push rod and a lifting plate, one end of the connecting plate is fixed on the output end of the linear displacement motor, the electromagnetic push rod is fixed on the other end of the connecting plate, the push rod of the electromagnetic push rod passes through the connecting plate and then is connected with the lifting plate, one end of the cantilever 34 is fixed on the lifting plate, the push rod of the electromagnetic push rod drives the lifting plate to move up and down in the vertical direction, and the lifting plate drives the ultrasonic magnetic grasping head 33 to generate displacement in the vertical direction through the cantilever 34; preferably, the lifting plate is provided with two guide posts, and free ends of the two guide posts respectively and movably penetrate through the connecting plate, so that the lifting plate can move more stably.
The working mode of the embodiment is as follows: when the Micro LED picking device works, a batch of Micro LEDs are flatly laid on a charging tray 4, then a linear displacement motor drives a vertical displacement component 32 and an ultrasonic magnetic grabbing head 33 to move right above the charging tray 4, then an electromagnetic push rod of the vertical displacement component 32 works to drive the ultrasonic magnetic grabbing head 33 to probe downwards, meanwhile, each linear magnetic electrode 335 is electrified and generates a magnetic field, when the Micro LEDs in the charging tray 4 are close to, a piezoelectric Micro-moving sheet 331 of the ultrasonic magnetic grabbing head 33 works to enable the linear magnetic electrode 335 to slowly contact the Micro LEDs on the charging tray 4, the situation that the Micro LEDs are damaged by pressure to cause poor functionality after being placed is prevented, the Micro LEDs are irregularly adsorbed at the moment, then a first ultrasonic vibrator 332 of the ultrasonic magnetic grabbing head 33 works to drive each Micro-vibrating sheet 334 to vibrate the linear magnetic electrode 335, so that an adsorption plane of the linear magnetic electrode 335 is contacted with and adsorbed by ferromagnetic deposited layers in grooves of the Micro LEDs, the grabbing of the Micro LEDs is completed, and the magnetism of the linear magnetic electrode 335 can only grab the Micro LEDs when the adsorption plane of the linear magnetic electrode 335 is contacted with the ferromagnetic deposition layer of the Micro LEDs by arranging the adsorption plane, so that the Micro LEDs can only be adsorbed directionally, and the directional adsorption grabbing of the Micro LEDs is completed;
after the Micro LEDs are directionally adsorbed and grabbed, the electromagnetic push rod drives the ultrasonic magnetic grabbing head 33 to ascend, meanwhile, the linear displacement motor drives the ultrasonic magnetic grabbing head 33 to move towards the drying and vibrating mechanism 6, the ultrasonic magnetic grabbing head 33 extends into the isolation cover 63, then the electromagnetic push rod drives the ultrasonic magnetic grabbing head 33 to downwards probe again, then each linear magnetic electrode 335 of the ultrasonic magnetic grabbing head 33 is powered off, the adsorbed Micro LEDs are placed at one end, close to the material tray 4, of the material tank 62, at the moment, the static pressure nitrogen spraying plate 64 sprays dry nitrogen to dry the Micro LEDs, the surfaces of the Micro LEDs can be cleaned, meanwhile, the controllable ultrasonic vibrator 61 drives the Micro LEDs on the material tank 62 to vibrate up and down, in a dry environment, vertical surfaces between the Micro LEDs and the Micro LEDs rub against each other to generate static electricity, the Micro LEDs are adsorbed to each other, and the phenomenon that gap parts between the Micro LEDs are reduced in product arrangement yield is avoided, then the controllable ultrasonic vibrator 61 drives the Micro LEDs on the trough 62 to vibrate horizontally, so that the Micro LEDs arranged together move towards the optical yield detection mechanism 5 and move to the optical glass plate 53 of the optical yield detection mechanism 5;
after the arranged Micro LEDs move to the optical glass plate 53, the second ultrasonic vibrator 51 works to enable the Micro LEDs to be closely arranged together, then the light emitting source 52 emits light to irradiate the optical glass plate 53, at the moment, if the effective area of the optical glass plate 53 is covered by the Micro LEDs, the light emitted by the light emitting source 52 cannot penetrate through the optical glass plate 53, and the fluorescence receiving plate 55 above the optical glass plate 53 cannot emit light; if the Micro LEDs are absent in some areas or not arranged tightly, light rays penetrate through the optical glass plate 53 to irradiate the fluorescence receiving plate 55, the fluorescence receiving plate 55 is excited to emit light, the absent positions are marked, and the number, the area and the positions of the defects can be visually observed by naked eyes; therefore, whether the arrangement of the Micro LED arrays is good or not can be detected, and the arrangement yield of the produced Micro LED arrays is ensured.
In the embodiment, the directional adsorption and grabbing of the Micro LEDs are realized by combining the ultrasonic Micro-vibration principle and the electromagnetic linear adsorption principle of the grabbing mechanism 3 through sliding, then the static pressure nitrogen jet plate 64 of the drying and vibrating mechanism 6 is used for drying the Micro LEDs, the Micro LEDs are vibrated in the vertical direction to perform electrostatic adsorption and arrangement between the Micro LEDs and vibrate in the horizontal direction to perform Micro LED transmission under the work of the controllable ultrasonic vibrator 61, then the arrangement yield of the Micro LED array is ensured by the optical yield detection mechanism 5, and the high-yield directional arrangement of micron-grade Micro elements is realized.
Based on the above embodiment, further, the cross section of the linear magnetic electrode 335 is a regular octagon, and the diameter of its circumscribed circle is 2/3 of the pitch between two pins of the Micro LED; by the arrangement, the adsorption plane of the linear magnetic electrode 335 can be conveniently contacted with the ferromagnetic deposition layer of the Micro LED, so that the directional adsorption and grabbing of the Micro LED are completed; a fillet is arranged at the edge of the linear magnetic electrode 335, and the radius of the fillet is 1/8 of the diameter of the circumscribed circle of the linear magnetic electrode 335; so set up, be convenient for protect Micro LED, do benefit to Micro LED's directional absorption simultaneously.
Based on the above embodiment, further, the surface of the trough 62 is provided with a teflon coating. So set up, can reduce wearing and tearing and vibration pay-off resistance.
Based on the above embodiment, further, the light emitting source 52 is an ultraviolet light source. The ultraviolet light source is adopted, the wavelength is short, the diffraction line shape is not easy to occur, and the positioning precision is improved.
Based on the above embodiment, the optical yield detection mechanism 5 further includes a beam splitter lens 56, and the beam splitter lens 56 is disposed between the light source 52 and the optical glass plate 53. The beam of light irradiated onto the optical glass plate 53 is made more parallel by the spectroscope lens 56, and the detection is more reliable.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (5)
1. A Micro LED array method based on an ultrasonic vibration type mechanical arm is characterized by comprising a bottom plate (1), a top plate (2) connected to one end of the bottom plate (1) through four support columns, a sliding grabbing mechanism (3) arranged on the bottom surface of the top plate (2), a material tray (4) arranged on the bottom plate (1) and located below the top plate (2), an optical yield detection mechanism (5) arranged at the other end of the bottom plate (1) and a drying vibration mechanism (6) arranged on the bottom plate (1) and located between the material tray (4) and the optical yield detection mechanism (5);
the sliding and grabbing mechanism (3) comprises a linear sliding component (31) arranged on the bottom surface of the top plate (2), a vertical displacement component (32) arranged on the output end of the linear sliding component (31), and an ultrasonic magnetic grabbing head (33) arranged on the output end of the vertical displacement component (32), wherein the linear sliding component (31) is used for driving the ultrasonic magnetic grabbing head (33) to move along the horizontal direction, the vertical displacement component (32) is used for driving the ultrasonic magnetic grabbing head (33) to move along the vertical direction, the ultrasonic magnetic grabbing head (33) is connected to the vertical displacement component (32) through a cantilever (34), one end of the cantilever (34) is connected to the output end of the vertical displacement component (32), and the other end of the cantilever (34) is connected to the ultrasonic magnetic grabbing head (33);
the ultrasonic magnetic grabbing head (33) comprises a piezoelectric micromotor piece (331), a first ultrasonic vibrator (332) and a base body (333), the piezoelectric micromotor piece (331) is arranged on the cantilever (34), the first ultrasonic vibrator (332) is arranged on the piezoelectric micromotor piece (331), the base body (333) is arranged on the first ultrasonic vibrator (332), a plurality of micro-vibrator pieces (334) are arranged on the bottom surface of the base body (333) at intervals along the length direction of the base body, a linear magnetic electrode (335) matched with the length of each micro-vibrator piece (334) is fixed at the free end of each micro-vibrator piece (334), and each linear magnetic electrode (335) is provided with an adsorption plane;
the drying vibration mechanism (6) comprises a controllable ultrasonic vibrator (61), a trough (62), a U-shaped isolation cover (63) and a static pressure nitrogen spray plate (64), wherein the controllable ultrasonic vibrator (61) is arranged on the bottom plate (1), the trough (62) is arranged on the controllable ultrasonic vibrator (61), an opening of the isolation cover (63) faces downwards, two ends of the isolation cover (63) are fixed on the controllable ultrasonic vibrator (61), and the static pressure nitrogen spray plate (64) is fixed on the inner top surface of the isolation cover (63) and is positioned above the trough (62);
the optical yield detection mechanism (5) comprises a second ultrasonic vibrator (51), a light emitting source (52), an optical glass plate (53), a fluorescent plate support (54) and a fluorescent receiving plate (55), the second ultrasonic vibrator (51) is arranged on the bottom plate (1) and is attached to one end, away from the material tray (4), of the controllable ultrasonic vibrator (61), the second ultrasonic vibrator (51) is provided with an accommodating groove, the light emitting source (52) is arranged in the accommodating groove, the optical glass plate (53) is fixed on the accommodating groove and is positioned above the light emitting source (52), the fluorescent plate support (54) is arranged on the second ultrasonic vibrator (51), and the fluorescent receiving plate (55) is arranged on the surface, opposite to the optical glass plate (53), of the fluorescent plate support (54);
when the Micro LED picking device works, a batch of Micro LEDs are flatly laid on a charging tray 4, then a linear displacement motor drives a vertical displacement component 32 and an ultrasonic magnetic grabbing head 33 to move right above the charging tray 4, then an electromagnetic push rod of the vertical displacement component 32 works to drive the ultrasonic magnetic grabbing head 33 to probe downwards, meanwhile, each linear magnetic electrode 335 is electrified and generates a magnetic field, when the Micro LEDs in the charging tray 4 are close to, a piezoelectric Micro-moving sheet 331 of the ultrasonic magnetic grabbing head 33 works to enable the linear magnetic electrode 335 to slowly contact the Micro LEDs on the charging tray 4, the situation that the Micro LEDs are damaged by pressure to cause poor functionality after being placed is prevented, the Micro LEDs are irregularly adsorbed at the moment, then a first ultrasonic vibrator 332 of the ultrasonic magnetic grabbing head 33 works to drive each Micro-vibrating sheet 334 to vibrate the linear magnetic electrode 335, so that an adsorption plane of the linear magnetic electrode 335 is contacted with and adsorbed by ferromagnetic deposited layers in grooves of the Micro LEDs, the grabbing of the Micro LEDs is completed, and the magnetism of the linear magnetic electrode 335 can only grab the Micro LEDs when the adsorption plane of the linear magnetic electrode 335 is contacted with the ferromagnetic deposition layer of the Micro LEDs by arranging the adsorption plane, so that the Micro LEDs can only be adsorbed directionally, and the directional adsorption grabbing of the Micro LEDs is completed;
after the Micro LEDs are directionally adsorbed and grabbed, the electromagnetic push rod drives the ultrasonic magnetic grabbing head 33 to ascend, meanwhile, the linear displacement motor drives the ultrasonic magnetic grabbing head 33 to move towards the drying and vibrating mechanism 6, the ultrasonic magnetic grabbing head 33 extends into the isolation cover 63, then the electromagnetic push rod drives the ultrasonic magnetic grabbing head 33 to downwards probe again, then each linear magnetic electrode 335 of the ultrasonic magnetic grabbing head 33 is powered off, the adsorbed Micro LEDs are placed at one end, close to the material tray 4, of the material tank 62, at the moment, the static pressure nitrogen spraying plate 64 sprays dry nitrogen to dry the Micro LEDs, the surfaces of the Micro LEDs can be cleaned, meanwhile, the controllable ultrasonic vibrator 61 drives the Micro LEDs on the material tank 62 to vibrate up and down, in a dry environment, vertical surfaces between the Micro LEDs and the Micro LEDs rub against each other to generate static electricity, the Micro LEDs are adsorbed to each other, and the phenomenon that gap parts between the Micro LEDs are reduced in product arrangement yield is avoided, then the controllable ultrasonic vibrator 61 drives the Micro LEDs on the trough 62 to vibrate horizontally, so that the Micro LEDs arranged together move towards the optical yield detection mechanism 5 and move to the optical glass plate 53 of the optical yield detection mechanism 5;
after the arranged Micro LEDs move to the optical glass plate 53, the second ultrasonic vibrator 51 works to enable the Micro LEDs to be closely arranged together, then the light emitting source 52 emits light to irradiate the optical glass plate 53, at the moment, if the effective area of the optical glass plate 53 is covered by the Micro LEDs, the light emitted by the light emitting source 52 cannot penetrate through the optical glass plate 53, and the fluorescence receiving plate 55 above the optical glass plate 53 cannot emit light; if the Micro LEDs are absent in some areas or not arranged tightly, light rays penetrate through the optical glass plate 53 to irradiate the fluorescence receiving plate 55, the fluorescence receiving plate 55 is excited to emit light, the absent positions are marked, and the number, the area and the positions of the defects can be visually observed by naked eyes; therefore, whether the arrangement of the Micro LED arrays is good or not can be detected, and the arrangement yield of the produced Micro LED arrays is ensured.
2. An ultrasonic vibratory manipulator-based Micro LED array method as claimed in claim 1, wherein the linear magnetic electrode (335) is regular octagonal in cross-section with circumscribed circle diameter 2/3 of Micro LED two pin pitch; the edges and corners of linear magnetic electrode (335) are equipped with the fillet, the radius of fillet is 1/8 of the circumscribed circle diameter of linear magnetic electrode (335).
3. An ultrasonic vibratory manipulator-based Micro LED array method as set forth in claim 1, wherein the surface of the trough (62) is provided with a teflon coating.
4. An ultrasonic vibratory manipulator-based Micro LED array method as set forth in claim 1, wherein the light emitting source (52) is an ultraviolet light source.
5. The ultrasonic vibration manipulator-based Micro LED array method according to claim 1, wherein the optical yield detection mechanism (5) further comprises a beam splitting lens (56), and the beam splitting lens (56) is disposed between the light emitting source (52) and the optical glass plate (53).
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| CN202011493942.XA CN112635384A (en) | 2020-03-04 | 2020-03-04 | Micro LED array method based on ultrasonic vibration type mechanical arm |
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| CN202010142686.3A CN111098330B (en) | 2020-03-04 | 2020-03-04 | Micro LED array manipulator based on ultrasonic vibration formula |
| CN202011493942.XA CN112635384A (en) | 2020-03-04 | 2020-03-04 | Micro LED array method based on ultrasonic vibration type mechanical arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113044540A (en) * | 2021-04-27 | 2021-06-29 | 晋江市百达五金制品有限公司 | Automatic umbrella frame fitting inserting and hanging machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02215610A (en) * | 1989-02-14 | 1990-08-28 | Matsushita Electric Ind Co Ltd | Micro-chip supply device |
| JP3896516B2 (en) * | 1998-04-27 | 2007-03-22 | 澁谷工業株式会社 | Device for mounting solder balls on wafers |
| CN106229287B (en) * | 2016-09-30 | 2019-04-05 | 厦门市三安光电科技有限公司 | For shifting the transposition head of microcomponent and the transfer method of microcomponent |
| CN107910413B (en) * | 2017-11-21 | 2019-07-12 | 福州大学 | A kind of the flood tide transfer device and transfer method of MicroLED |
| CN208352324U (en) * | 2018-07-16 | 2019-01-08 | 江西兆驰半导体有限公司 | A kind of micro-led transfer system |
| CN109712928B (en) * | 2019-01-02 | 2020-08-25 | 广东省半导体产业技术研究院 | High-precision transfer printing equipment and system suitable for micro device |
| CN110233125A (en) * | 2019-07-03 | 2019-09-13 | 广东工业大学 | A kind of chip array system and aligning method based on two-dimensional ultrasound sound comb |
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| CN113044540A (en) * | 2021-04-27 | 2021-06-29 | 晋江市百达五金制品有限公司 | Automatic umbrella frame fitting inserting and hanging machine |
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| CN111098330B (en) | 2021-06-25 |
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