Display panel and method for manufacturing same
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsXing Ming, Caiqin Chen, Yiyi Wang
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Abstract
The present disclosure provides a display panel and a method for manufacturing the same. The method includes providing a substrate including a display area and a non-display area. A chip on film (COF) and a testing structure are disposed in the non-display area. A testing circuit includes a signal trace including a non-metal trace and a metal trace connecting to each other. A cutting line is disposed on the signal trace. The method further includes testing the display area of the substrate by the testing structure, and removing a test pad.
Claims19
A method for manufacturing a display panel, comprising:
- a step S10 of providing a substrate, wherein the substrate comprises a display area and a non-display area surrounding the display area, and a chip on film (COF) and a testing structure are disposed in the non-display area;
- wherein the testing structure comprises:
- a test pad disposed at a side of the COF remote from the display area;
- and
- a testing circuit positioned between the test pad and the COF and including a signal trace connecting the COF and the test pad, wherein the signal trace comprises a non-metal trace and a metal trace connected to each other, and a cutting line is disposed on the signal trace;
- a step S20 of testing the display area of the substrate by the testing structure;
- and
- a step S30 of removing the test pad along the cutting line, so as to form the display panel.
A display panel comprising a display area and a non-display area surrounding the display area;
- wherein the display area comprises:
- a baseplate;
- a polysilicon layer disposed on the baseplate and comprising a non-metal trace;
- a buffer layer disposed on the polysilicon layer and including a through-hole;
- a planarization layer disposed on the buffer layer and including a recess;
- and
- a metal layer disposed on the buffer layer and comprising a metal trace, wherein the metal trace is electrically connected to the non-metal trace via the through-hole, and the metal trace is disposed in the recess;
- wherein the non-display area comprises a chip on film (COF) and the non-metal trace configured to prevent the metal trace from erosion, and the COF is electrically connected to one of the non-metal trace and the metal trace.
A method for manufacturing a display panel, comprising:
- a step S10 of providing a substrate, wherein the substrate comprises a display area and a non-display area surrounding the display area, and a chip on film (COF) and a testing structure are disposed in the non-display area;
- wherein the testing structure comprises:
- a test pad disposed at a side of the COF remote from the display area, wherein the test pads are disposed to correspond to the COFs one by one;
- and
- a testing circuit positioned between the test pad and the COF and including a signal trace connecting the COF and the test pad, wherein the signal trace comprises a non-metal trace and a metal trace connected to each other, and a cutting line is disposed on the signal trace;
- a step S20 of testing the display area of the substrate by the testing structure;
- and
- a step S30 of removing the test pad along the cutting line, so as to form the display panel.
Dependencies are inferred from the claim text.