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US 2021/0005643 A1Published application
Method for transferring light emitting elements, display panel, method for making display panel, and substrate
AssigneeCentury Technology (Shenzhen) Corporation Limited
InventorsPO-LIANG CHEN, YUNG-FU LIN
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Abstract
A method for transferring light emitting elements precisely during manufacture of display panels includes providing light emitting elements; providing a first electromagnetic plate defining magnetic adsorption positions; providing a receiving substrate defining receiving areas; providing a second electromagnetic plate; energizing the first electromagnetic plate to magnetically adsorb one light emitting element at one adsorption position; providing a second electromagnetic plate; and transferring the light emitting elements to one receiving area of the receiving substrate.
Claims20
A method for transferring light emitting elements, comprising:
- providing a plurality of light emitting elements, wherein a first magnetic material layer is on an end of each of the plurality of light emitting elements;
- providing a first electromagnetic plate, wherein the first electromagnetic plate defines a plurality of adsorption positions, each of the plurality of adsorption positions is capable of magnetically attracting one light emitting element on being energized;
- providing a receiving substrate, wherein providing the receiving substrate comprises providing a base layer, forming a second magnetic material layer on a side of the base layer, and forming a bonding layer on a side of the second magnetic material layer away from the base layer, wherein the bonding layer defines a plurality of receiving areas, each of the plurality of receiving areas is configured for receiving one of the plurality of light emitting elements;
- energizing the first electromagnetic plate to magnetically adsorbs one of the plurality of light emitting elements at each of the plurality of adsorption positions, wherein a surface of the first electromagnetic plate on which the plurality of light emitting elements are magnetically adsorbed is opposite to a surface of the receiving substrate defining the plurality of receiving areas, and the plurality of the light emitting elements are aligned one-to-one with the plurality of the receiving areas;
- providing a second electromagnetic plate on a side of the base layer away from the second magnetic material layer;
- wherein the second electromagnetic plate has magnetic properties after being energized;
- and
- powering on the second electromagnetic plate to form a magnetic field between the first magnetic material layer of each of the plurality of light emitting elements and the second magnetic material layer, and powering off the first electromagnetic plate so that each of the plurality of light emitting elements is detached from the first electromagnetic plate by the magnetic field and transferred to one corresponding receiving area of the receiving substrate.
5 more elements
A method for making a display panel, comprising:
- providing a plurality of light emitting elements, wherein a first magnetic material layer is on an end of each of the plurality of light emitting elements;
- providing a first electromagnetic plate, wherein the first electromagnetic plate defines a plurality of adsorption positions, each of the plurality of adsorption positions is capable of magnetically attracting one light emitting element on being energized;
- providing a receiving substrate, wherein providing the receiving substrate comprises providing a base layer, forming an second magnetic material layer on a side of the base layer, and forming a bonding layer on a side of the second magnetic material layer away from the base layer, wherein, the bonding layer defines a plurality of receiving areas, each of the plurality of receiving areas is configured for receiving one of the plurality of light emitting elements;
- energizing the first electromagnetic plate to magnetically adsorbs one of the plurality of light emitting elements at each of the plurality of adsorption positions, wherein a surface of the first electromagnetic plate on which the plurality of light emitting elements are magnetically adsorbed is opposite to a surface of the receiving substrate defining the plurality of receiving areas, and the plurality of the light emitting elements are aligned one-to-one with the plurality of the receiving areas;
- providing a second electromagnetic plate on a side of the base layer away from the second magnetic material layer, wherein the second electromagnetic plate has magnetic properties after being energized;
- and
- powering on the second electromagnetic plate to form a magnetic field between the first magnetic material layer of each of the plurality of light emitting elements and the second magnetic material layer, and powering off the first electromagnetic plate so that each of the plurality of light emitting elements is detached from the first electromagnetic plate by the magnetic field and transferred to one corresponding receiving area of the receiving substrate.
4 more elements
A substrate using in a display panel, comprising:
- a base layer;
- a magnetic material layer on a side of the base layer;
- and
- a thin film transistor (TFT) array layer on a side of the magnetic material layer away from the base layer.
1 more element
A display panel comprising a substrate and a plurality of light emitting elements on the substrate, wherein the substrate comprises:
- a base layer;
- a magnetic material layer on a side of the base layer;
- and
- a thin film transistor (TFT) array layer on a side of the magnetic material layer away from the base layer;
- wherein the plurality of light emitting elements are electrically connected to the TFT array layer.
2 more elements
Dependencies are inferred from the claim text.