LED display panel and manufacturing method thereof
View Patent ↗A light-emitting diode (LED) display panel and a manufacturing method thereof are provided. The LED display panel includes a substrate, an LED array, and conductive members. The LED array includes a plurality of LED chips disposed on the substrate in an array. The conductive members are disposed between the LED chips and the substrate. The LED chips are fixed onto and electrically connected to the substrate by the conductive members, and the conductive members have adhesion, and the adhesion is adjustable.
1 . A light-emitting diode (LED) display panel, comprising:
a substrate;
an LED array comprising a plurality of LED chips disposed on the substrate in an array; and
a plurality of conductive members disposed between the LED chips and the substrate, wherein the LED chips are fixed onto and electrically connected to the substrate by the conductive members, the conductive members comprise a photocuring conductive adhesive, and the photocuring conductive adhesive is changed from a liquid state to a solid state under a visible light condition;
wherein the conductive members have adhesion, and the adhesion is adjustable;
wherein each of the LED chips comprises a light-emitting part and an electrode part electrically connected to the light-emitting part, the electrode part comprises at least one transparent electrode, the substrate is provided with a plurality of positioning grooves disposed in an array; and each of the conductive members is disposed in a corresponding one of the positioning grooves;
wherein a bottom of the conductive member is adhered and flattened on a bottom of the positioning groove, and a bottom of the transparent electrode is adhered on a top of the conductive member to electrically connect the transparent electrode to the substrate.
2 . The LED display panel according to claim 1 , further comprising a light-shielding wall disposed between two adjacent LED chips.
3 . The LED display panel according to claim 2 , wherein a distance from a side surface of the light-shielding wall away from the substrate to the substrate is greater than or equal to a distance from a side surface of the LED chips away from the substrate to the substrate.
4 . The LED display panel according to claim 2 , wherein
in a light-emitting direction of the LED display panel, a depth of the positioning grooves is greater than or equal to a thickness of the conductive members, and the depth of the positioning grooves is less than or equal to a sum of thicknesses of the conductive members and the at least one transparent electrode.
5 . The LED display panel according to claim 2 , wherein the substrate is provided with a plurality of barrier members disposed in an array, and the barrier members are defined with positioning grooves corresponding to the LED chips; and
the conductive members are disposed in the positioning grooves, in a light-emitting direction of the LED display panel, a depth of the positioning grooves is greater than or equal to a thickness of the conductive members, and the depth of the positioning grooves is less than or equal to a sum of thicknesses of the conductive members and the at least one transparent electrode.
6 . The LED display panel according to claim 1 , wherein an orthographic projection of the at least one transparent electrode on the conductive members is located in the conductive members.
7 . The LED display panel according to claim 1 , wherein the electrode part of each of the LED chips comprises a first transparent electrode and a second transparent electrode insulated from each other, and each of the conductive members comprises a first conductive part electrically connected to the first transparent electrode and a second conductive part electrically connected to the second transparent electrode; and
the first conductive part is insulated from the second conductive part.
8 . The LED display panel according to claim 7 , wherein the first conductive part and the second conductive part are arranged separately, and in a first direction, a spacing between the first conductive part and the second conductive part is less than or equal to a spacing between the first transparent electrode and the second transparent electrode; and
the first direction is parallel to a connecting direction of the first transparent electrode and the second transparent electrode.
9 . The LED display panel according to claim 7 , wherein each of the LED chips further comprises an insulating part disposed between the first transparent electrode and the second transparent electrode; and
in a light-emitting direction of the LED display panel, a thickness of the insulating part is equal to a sum of a thickness of the first transparent electrode or the second transparent electrode and a thickness of the conductive members.