Display panel, display apparatus, method of preventing electro-magnetic interference in display panel, and method of fabricating display panel

A method of preventing electro-magnetic interference in a display panel;

• wherein the display panel comprises a display part and a fanout part;
• wherein the display part comprises a plurality of pixel driving circuits;
• the fanout part comprises a bendable portion and a multiplexer;
• wherein the display panel comprises a plurality of first signal lines extending through the bendable portion, and connecting the plurality of pixel driving circuits to the multiplexer;
• and
• a direct current supply line extending through the bendable portion and electrically connected to the plurality of pixel driving circuits;
• wherein a portion of the direct current supply line is between the multiplexer and the bendable portion and crosses over the plurality of first signal lines;
• wherein the fanout part comprises:
• a first fanout sub-part abutting the display part;
• the bendable portion connected to the first fanout sub-part and spaced apart from the display part by the first fanout sub-part;
• a second fanout sub-part connected to the bendable portion and spaced apart from the first fanout sub-part by the bendable portion;
• and
• the multiplexer connected to the second fanout sub-part and spaced apart from the bendable portion by the second fanout sub-part;
• wherein the display panel further comprises a driving integrated circuit;
• wherein the fanout part further comprises:
• a third fanout sub-part connected to the multiplexer and spaced apart from the second fanout sub-part by the multiplexer;
• and
• wherein the display panel comprises a plurality of second signal lines extending through the third fanout sub-part, and connecting the multiplexer to the driving integrated circuit;
• wherein the direct current supply line comprises a first portion, a second portion, and a third portion;
• the first portion crosses over the plurality of first signal lines;
• the second portion extends from the first portion through the bendable portion to electrically connect to the plurality of pixel driving circuits;
• and
• the third portion connects the first portion to a flexible printed circuit;
• wherein the display panel further comprises:
• a plurality of driving thin film transistor respectively in a plurality of subpixels in the display part;
• and
• a plurality of capacitors respectively in the plurality of subpixels in the display part;
• wherein a respective one of the plurality of driving thin film transistors comprises a driving active layer, a driving source electrode, a driving drain electrode, and a driving gate electrode;
• and
• the driving source electrode, the driving drain electrode, the first portion, the second portion, and the third portion are in a same layer and comprise a same material;
• wherein a respective one of the plurality of capacitors comprises a first capacitor electrode, a second capacitor electrode, and an insulating layer insulating the first capacitor electrode from the second capacitor electrode;
• wherein the plurality of first signal lines comprises a plurality of first type first signal lines and a plurality of second type first signal lines;
• orthographic projections of the plurality of first type first signal lines on a base substrate and orthographic projections of the plurality of second type first signal lines on the base substrate are alternately arranged;
• the first capacitor electrode, the driving gate electrode, and the plurality of first type first signal lines are in a same layer and comprise a same material;
• and
• the second capacitor electrode, and the plurality of second type first signal lines are in a same layer and comprise a same material;
• wherein the method of preventing electro-magnetic interference comprises providing a direct current signal to the direct current supply line to prevent electromagnetic radiation signals emitted from the multiplexer from transmitting to the bendable portion.

A method of fabricating a display panel, comprising:

• forming a plurality of pixel driving circuits in a display part;
• forming a bendable portion in a fanout part;
• forming a multiplexer in the fanout part;
• forming a plurality of first signal lines extending through the bendable portion, and connecting the plurality of pixel driving circuits to the multiplexer;
• and
• forming a direct current supply line extending through the bendable portion and be electrically connected to the plurality of pixel driving circuits;
• wherein a portion of the direct current supply line is formed between the multiplexer and the bendable portion and crossing over the plurality of first signal lines;
• wherein forming the fanout part comprises:
• forming a first fanout sub-part abutting the display part;
• forming the bendable portion connected to the first fanout sub-part and spaced apart from the display part by the first fanout sub-part;
• forming a second fanout sub-part connected to the bendable portion and spaced apart from the first fanout sub-part by the bendable portion;
• and
• forming the multiplexer connected to the second fanout sub-part and spaced apart from the bendable portion by the second fanout sub-part;
• wherein the method further comprises forming a driving integrated circuit;
• wherein forming the fanout part further comprises:
• forming a third fanout sub-part connected to the multiplexer and spaced apart from the second fanout sub-part by the multiplexer;
• and
• wherein the method comprises forming a plurality of second signal lines extending through the third fanout sub-part, and connecting the multiplexer to the driving integrated circuit;
• wherein forming the direct current supply line comprises forming a first portion, forming a second portion, and forming a third portion;
• the first portion crosses over the plurality of first signal lines;
• the second portion extends from the first portion through the bendable portion to electrically connect to the plurality of pixel driving circuits;
• and
• the third portion connects the first portion to a flexible printed circuit;
• wherein the method further comprises:
• forming a plurality of driving thin film transistor respectively in a plurality of subpixels in the display part;
• and
• forming a plurality of capacitors respectively in the plurality of subpixels in the display part;
• wherein forming a respective one of the plurality of driving thin film transistors comprises forming a driving active layer, forming a driving source electrode, forming a driving drain electrode, and forming a driving gate electrode;
• and
• the driving source electrode, the driving drain electrode, the first portion, the second portion, and the third portion are formed in a same layer and comprise a same material;
• wherein forming a respective one of the plurality of capacitors comprises forming a first capacitor electrode, forming a second capacitor electrode, and forming an insulating layer insulating the first capacitor electrode from the second capacitor electrode;
• wherein forming the plurality of first signal lines comprises forming a plurality of first type first signal lines and forming a plurality of second type first signal lines;
• orthographic projections of the plurality of first type first signal lines on a base substrate and orthographic projections of the plurality of second type first signal lines on the base substrate are alternately arranged;
• the first capacitor electrode, the driving gate electrode, and the plurality of first type first signal lines are formed in a same layer and comprise a same material;
• and
• the second capacitor electrode, and the plurality of second type first signal lines are formed in a same layer and comprise a same material.