Linear resistive element and preparation method

A method for preparing a linear resistive element, comprising:

• providing a via (12) in a substrate layer (11), and filling the via (12) with a conductive member (13);
• alternately depositing first dielectric layers (21) and resistive layers (22) on the substrate layer (11) to form a function unit (2), a number of the resistive layers (22) being at least two;
• depositing a first electrode (31) and a second electrode (32) on the substrate layer (11), the function unit (2) being connected between the first electrode (31) and the second electrode (32), the second electrode (32) being further connected with the conductive member (13) by means of contact;
• depositing a second dielectric layer (4) on the function unit (2), and providing a wire (5) in the second dielectric layer (4), the wire (5) being electrically connected with the first electrode (31);
• and
• applying a voltage to the first electrode (31) and the second electrode (32) through the conductive member (13) and the wire (5) such that a conductive filament (23) connecting the first electrode (31) and the second electrode (32) is formed in each of the resistive layers (22) in the function unit (2);
• wherein the first electrode (31) and the second electrode (32) are vertically arranged on the substrate layer (11), and the resistive layers (22) and the first dielectric layers (21) are alternately stacked between the first electrode (31) and the second electrode (32) that are arranged vertically.