CN-122002981-A - Method for manufacturing display panel

CN122002981ACN 122002981 ACN122002981 ACN 122002981ACN-122002981-A

Abstract

The application relates to a preparation method of a display panel, which comprises the steps of providing a substrate, preparing and forming a plurality of binding terminals on a first surface of the substrate, arranging the binding terminals side by side, arranging at least two binding terminals at intervals, forming a gap, coating the first surface of the substrate, forming a filling body in the gap, wherein the filling body is configured to be used for blocking plating metal from entering the gap, attaching a first protective film to the first surface of the substrate, and attaching the first protective film to the first surface of the substrate, wherein the first protective film comprises a covering part which is covered above the binding terminals, and the covering part is attached to the first surface of the substrate through the filling body. When the metal coating is carried out subsequently, the coated metal cannot enter the gap due to the blocking effect of the filling body, so that metal residues cannot be formed in the gap, the problem that the metal pad of two adjacent binding terminals is short-circuited due to the residual metal can be effectively solved, and the manufacturing yield of the display panel and the display performance of the display device are ensured.

Inventors

LI HAO
XI WENYUAN

Assignees

海信视像科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (10)

1. The preparation method of the display panel is characterized by comprising the following steps: providing a substrate, preparing and forming a plurality of binding terminals on a first plate surface of the substrate, arranging the binding terminals side by side, and forming a gap by at least two binding terminals at intervals; Coating the first plate surface of the substrate to form a filling body in the gap, wherein the filling body is configured to block the plating metal from entering the gap; the first protection film is attached to the first plate surface of the substrate, and comprises a covering part which is arranged above the binding terminal in a covering mode, and the covering part is attached to the first plate surface of the substrate through the filling body.
2. The method of manufacturing a display panel according to claim 1, wherein the step of forming the filler in the space by coating the first surface of the substrate comprises the steps of: PR coating processing is carried out on the first plate surface of the substrate; exposing, developing and cleaning the formed PR layer to form PR filling bodies in gaps between any two adjacent binding terminals; the height of the PR filling body is equal to the depth of the gap, and the top surface of the PR filling body, which is far away from the first plate surface of the substrate, is flush with the top surface of the binding terminal.
3. The method for manufacturing a display panel according to claim 1, wherein in the step of providing a substrate, and manufacturing a plurality of binding terminals on a first surface of the substrate, the plurality of binding terminals are arranged side by side, specifically: And preparing and forming a plurality of connecting terminals on a second plate surface of the substrate, wherein the connecting terminals are arranged side by side, and the connecting terminals and the binding terminals are arranged in one-to-one correspondence in a first direction of the substrate, and the first direction is specifically the thickness direction of the substrate.
4. The method of manufacturing a display panel according to claim 3, wherein in the step of attaching the first protective film to the first surface of the substrate, specifically: And attaching a second protection film to the second surface of the substrate, wherein the second protection film is configured to protect the metal layer of the second surface of the substrate.
5. The method of manufacturing a display panel according to claim 4, further comprising, after the step of attaching a first protective film to the first surface of the substrate and attaching a second protective film to the second surface of the substrate, the steps of: The substrate further comprises a side surface, the side surface is located between the first plate surface and the second plate surface, the side surface is close to the binding terminal and the connecting terminal, and the side surface is processed to form a chamfer.
6. The method of manufacturing a display panel according to claim 5, further comprising, after the step of machining the side surface to form a chamfer, the step of: and forming a side wiring metal layer on the substrate by adopting a metal coating process, wherein the side wiring metal layer is connected with the binding terminal and the connecting terminal, and the side wiring metal layer covers the side surface.
7. The method of manufacturing a display panel according to claim 6, further comprising, after the step of forming the side-wiring metal layer on the substrate using a metal plating process, the steps of: and cutting the first protective film to expose the part of the binding terminal close to the first protective film.
8. The method of manufacturing a display panel according to claim 7, further comprising, after the step of cutting the first protective film to expose a portion of the binding terminals, the step of: And carrying out laser processing on the side wiring metal layer to obtain a plurality of side wiring lines, wherein the side wiring lines are arranged in one-to-one correspondence with the binding terminals and the connecting terminals, and are electrically connected with the binding terminals and the connecting terminals which are correspondingly arranged.
9. The method for manufacturing a display panel according to claim 8, wherein after the step of performing laser processing on the side wiring metal layer to obtain a plurality of side wiring lines, the side wiring lines are disposed in one-to-one correspondence with the binding terminals and the connection terminals, and the side wiring lines are electrically connected with the binding terminals and the connection terminals disposed in correspondence therewith, further comprising the steps of: And cleaning the filling body so as to peel the filling body from the gaps.
10. The method of manufacturing a display panel according to claim 9, further comprising, before or after the step of cleaning the filler to peel the filler from the void, the step of: And removing the first protective film and the second protective film.

Description

Method for manufacturing display panel Technical Field The application relates to the technical field of display devices, in particular to a preparation method of a display panel. Background Mini-LED display devices and Micro-LED display devices are widely used because of their advantages of self-luminescence, high brightness, high contrast, high resolution, high color saturation, long life, fast response speed, low power consumption, etc. The glass-based Mini-LED and Micro-LED are mainly applied to large-size display equipment in a splicing mode, as shown in fig. 1, in order to realize seamless splicing, a back binding technology is generally adopted to reduce the width of a splicing gap. At present, glass-based Mini-LEDs and Micro-LEDs frameless spliced screens mainly adopt a side wiring mode to electrically connect binding terminals on the front surface of a substrate with connecting terminals on the back surface of the substrate. When the side coating process is performed to manufacture the side wiring, the display area needs to be coated for protection, but as the binding terminals protrude out of the front surface of the substrate by a certain height, when the protective film is attached, the protective film part close to one side of the binding terminals cannot be completely attached to the substrate, as shown in fig. 5 and 6, a gap is formed between the metal pads of two adjacent binding terminals, and then when the metal coating is performed, metal can enter the gap, metal can remain between the gaps, short circuit is generated between the adjacent metal pads, and the display performance of the display device and the manufacturing yield of the display panel are affected. Disclosure of Invention Based on the above, it is necessary to provide a method for manufacturing a display panel, which aims at the problems of short circuit caused by metal residues, and influence on the display performance and the manufacturing yield of the display device. The application provides a preparation method of a display panel, which comprises the following steps: providing a substrate, preparing and forming a plurality of binding terminals on a first plate surface of the substrate, arranging the binding terminals side by side, and forming a gap by at least two binding terminals at intervals; Coating the first plate surface of the substrate to form a filling body in the gap, wherein the filling body is configured to block the plating metal from entering the gap; the first protection film is attached to the first plate surface of the substrate, and comprises a covering part which is arranged above the binding terminal in a covering mode, and the covering part is attached to the first plate surface of the substrate through the filling body. When the preparation method of the display panel is used for preparing the display panel, a filling body can be formed in a gap between at least two binding terminals by adopting a coating process, the filling body can tightly fill the gap, then a first protective film is attached to the first plate surface of the substrate, the first protective film is provided with a covering part which is covered above the binding terminals, at the moment, the covering part is tightly contacted with the filling body, the covering part can be indirectly and completely attached to the first plate surface of the substrate through the filling body, namely, a matching gap does not exist between the first protective film and the first plate surface of the substrate, on the basis, when metal coating is carried out subsequently, coating metal cannot enter the gap due to the blocking effect of the filling body, so that metal residues cannot be formed in the gap, the problem that metal pad of two adjacent binding terminals is short-circuited due to residual metal can be effectively solved, and the manufacturing yield of the display panel and the display performance of display equipment are ensured. The technical scheme of the application is further described as follows: In one embodiment, in the step of coating the first surface of the substrate to form the filler in the gap, the specific steps are as follows: PR coating processing is carried out on the first plate surface of the substrate; exposing, developing and cleaning the formed PR layer to form PR filling bodies in gaps between any two adjacent binding terminals; the height of the PR filling body is equal to the depth of the gap, and the top surface of the PR filling body, which is far away from the first plate surface of the substrate, is flush with the top surface of the binding terminal. In one embodiment, in the step of providing a substrate, preparing a first board surface of the substrate to form a plurality of binding terminals, where a plurality of binding terminals are arranged side by side, specifically: And preparing and forming a plurality of connecting terminals on a second plate surface of the substrate, wherein the connecting terminals