Manufacturing method for display panel and display panel

A manufacturing method for a display panel, comprising a manufacture procedure of forming an array substrate, wherein the manufacture procedure of forming the array substrate comprises the following steps:

• forming a molybdenum buffer layer or a molybdenum alloy buffer layer with a preset pattern on a glass substrate;
• placing a glass substrate with a molybdenum buffer layer or a molybdenum alloy buffer layer formed thereon as well as a counter electrode which jointly form a current loop into electrochemical deposition solution containing copper ions and chromium ions, and applying a pulse voltage by a scanning line through a short-circuit strip to enable the counter electrode and the molybdenum buffer layer or the molybdenum alloy buffer layer to form the current loop;
• applying pulse voltage with the potential of 0.3419 V for 40-80 seconds to enable the counter electrode and the molybdenum buffer layer or the molybdenum alloy buffer layer to form the current loop, and promoting cupric ions in the electrochemical deposition solution to perform a reduction reaction to generate elemental copper;
• then applying a pulse voltage with the potential of −0.740 V for 5 to 10 seconds to form the current loop between the counter electrode and the molybdenum buffer layer or the molybdenum alloy buffer layer, and promoting chromate in the electrochemical deposition solution to perform a reduction reaction to generate elemental chromium to obtain a copper alloy metal layer;
• heating the copper alloy metal layer at the temperature of 300-500° C. for 30-120 minutes to diffuse chromium to the surface and forming a passivation protection layer on the surface of the copper alloy metal layer, and the formed buffer layer and the copper alloy metal layer being a gate electrode metal layer and/or a scanning line metal layer;
• and
• sequentially forming an insulating layer, an active layer, a source-drain electrode metal layer and/or a data line metal layer, a passivation layer and a transparent electrode layer on the gate electrode metal layer and/or the scanning line metal layer.

A display panel, comprising an array substrate and a color filter substrate disposed opposite to the array substrate,

• wherein the array substrate comprises:
• a glass substrate,
• a buffer layer formed on the glass substrate;
• a first metal layer formed by placing the glass substrate with the buffer layer formed thereon into an electrochemical deposition device, and performing electrochemical deposition to form a copper alloy metal layer corresponding to the buffer layer, and heating and annealing the copper alloy metal layer;
• an insulating layer formed on the first metal layer;
• an active layer formed on the insulating layer;
• a second metal layer formed on the active layer;
• a passivation layer formed on the second metal layer;
• a transparent electrode layer formed on the passivation layer;
• wherein the first metal layer comprises a buffer layer and a copper alloy metal layer.