CN112289777B - Display panel and display device - Google Patents

Abstract

The embodiment of the present application discloses a display panel and a display device, wherein the display panel includes: a detection area, and the display panel further includes: a base substrate, including a first sub-section, the position of the first sub-section corresponds to the position of the detection area; an anode layer, including a detection terminal, the detection terminal is arranged on the first sub-section; a limiting layer is arranged on the first sub-section, and an opening area is provided on the limiting layer, and the position of the opening area corresponds to the position of the detection terminal; the height of the detection terminal is at least greater than the height of the limiting layer; layer. The display panel and the display device of the embodiments of the present application can improve product yield.

Description

Display panel and display device

technical field

The present application relates to the field of display technology, in particular to a display panel and a display device.

Background technique

Due to its advantages of being light and thin, flexible and foldable, flexible display panels have taken up an increasing proportion of electronic equipment in recent years. At present, the array area of the display panel basically adopts the 7T1C design, which involves compensation circuits, so the requirements for the electrical properties of the product are relatively high; and the electrical monitoring equipment on the production line basically uses the Test Element Group (TEG).

When TEG equipment measures the electrical properties of products, two recognition processes are required. The recognition process is to capture the image of the detection terminal through the image recognition device to determine the position of the detection terminal, and then connect the TEG probe to the detection terminal. However, in the final identification process, it is easily interfered by other film layers, which leads to the inability to accurately obtain the image of the terminal to be detected, so that the probe cannot be connected, and measurement cannot be performed, which reduces the product yield of the display panel.

Contents of the invention

Embodiments of the present application provide a display panel and a display device, which can improve the product yield of the display panel.

An embodiment of the present application provides a display panel, which includes: a detection area, and the display panel further includes:

The base substrate includes a first subsection, the position of the first subsection corresponds to the position of the detection area;

an anode layer, including a detection terminal, the detection terminal is provided on the first sub-part;

A defined layer is provided on the first sub-section, and an opening area is provided on the defined layer, and the position of the opened area corresponds to the position of the detection terminal; the height of the detection terminal is at least greater than the height of the defined layer;

The spacers are arranged on the limiting layer.

The present invention also provides a display device, which includes the above-mentioned display panel.

The display panel and the display device in the embodiment of the present application include a detection area, and the display panel further includes: a substrate substrate, including a first sub-section, the position of the first sub-section corresponds to the position of the detection area; an anode layer, including a detection terminal, and the detection terminal is provided on the first sub-section; a defined layer is provided on the first sub-section, and the defined layer is provided with an opening area, and the position of the opening area corresponds to the position of the detection terminal; the height of the detection terminal is at least greater than the height of the defined layer; It is greater than the height of the limiting layer, so the height difference between the detection terminal and the spacer is reduced, thereby avoiding the interference of the spacer, and then the image of the terminal to be detected can be accurately acquired, which is convenient for probe access and measurement, and improves the product yield of the display panel.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative work.

FIG. 1 is a schematic cross-sectional view of a first detection area in a conventional display panel.

FIG. 2 is a schematic cross-sectional view of a second detection area in a conventional display panel.

FIG. 3 is a schematic partial cross-sectional view of a display panel provided by an embodiment of the present application.

FIG. 4 is a schematic cross-sectional view of a display panel provided by an embodiment of the present application.

FIG. 5 is a schematic cross-sectional view of a display panel provided by another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

As shown in FIG. 1 , the existing display panel includes: a first detection area and a display area. The first detection area includes a base substrate 11, a first insulating layer 12, a second insulating layer 13, and a first detection terminal 14. The first detection terminal 14 is arranged on the same layer as the source and drain electrodes in the display area. There is no interference from other film layers around the first detection terminal 14 , so the image recognition device can capture the image of the first detection terminal.

As shown in FIG. 2 , the display panel further includes: a second detection area, the second detection area includes a base substrate 11, a first insulating layer 12, a second insulating layer 13, a second detection terminal 15, a defined layer 16, and a spacer 17, the second detection terminal 15 is arranged on the same layer as the anode in the display area, and the defined layer 16 is provided with an opening area corresponding to the position of the second detection terminal 15, so as to expose the second detection terminal outside.

However, when the image recognition device focuses, it will first focus on the film layer where the spacer 17 is located, and there is a height difference of nearly 3um between the spacer 17 and the second detection terminal 15, which affects the image recognition device. The gathering effect of the second detection terminal 15 leads to the failure of image recognition, the failure of the access probe, and the failure of measurement.

Please refer to FIG. 3 . FIG. 3 is a schematic partial cross-sectional view of a display panel provided by an embodiment of the present application.

As shown in FIG. 3 , the display panel of this embodiment includes a detection area 101 and a display area 102 , and the display panel further includes: a base substrate 21 , an anode layer 26 and a limiting layer 27 .

The base substrate 21 includes a first subsection 211, the position of the first subsection 211 corresponds to the position of the detection area 101; referring to FIG.

The anode layer 26 includes a detection terminal 261 disposed on the first sub-section 211 . Referring to FIG. 4 , the anode layer 26 may further include an anode 262 .

The limiting layer 27 is arranged on the first sub-section 211, and the limiting layer 27 is provided with an opening area (not shown in the figure), and the position of the opening area corresponds to the position of the detection terminal 261; the height h2 of the detecting terminal 261 is at least greater than the height h1 of the limiting layer 27;

The spacers 28 are disposed on the limiting layer 27 .

Since the height of the detection terminal is greater than the height of the limiting layer, the height difference between the detection terminal and the spacer is reduced, thereby avoiding the interference of the spacer, and the image of the terminal to be detected can be accurately obtained, which is convenient for connecting probes and measurement, and improves the product yield of the display panel.

In another embodiment, as shown in FIG. 3 and FIG. 4 , the display panel further includes: a first metal layer 22 .

The first metal layer 22 includes a first metal portion 221, the first metal portion 221 is disposed between the first sub-portion 211 and the detection terminal 261, the detection terminal 261 is disposed above the first metal portion 221, wherein the detection terminal 261 partially covers the first metal portion 221, or the area of the orthographic projection of the first metal portion 221 on the first sub-portion 211 is greater than or equal to the area of the orthographic projection of the detection terminal 261 on the first sub-portion 211. Since the first metal part is added below the detection terminal, the height of the detection terminal is increased, and the height difference between the detection terminal and the spacer is reduced, thereby avoiding interference by the spacer.

In one embodiment, as shown in FIG. 4 , in order to further increase the height of the detection terminal, the first metal layer 22 further includes: a gate 222 located in the display region 102 ; the thickness of the first metal part 221 is greater than the thickness of the gate 222 . Certainly, in other implementation manners, the thickness of the first metal portion 221 may also be equal to the thickness of the gate 222 .

In another embodiment, as shown in FIG. 3 and FIG. 4 , the display panel further includes: a second metal layer 24 disposed between the first metal layer 22 and the anode layer 26, the second metal layer 24 including a second metal portion 241; the second metal portion 241 is disposed directly above the first metal portion 221. That is, the second metal part 241 is disposed between the first metal part 221 and the detection terminal 261 . Since the second metal part is added below the detection terminal, the height of the detection terminal is further increased, and the height difference between the detection terminal and the spacer is further reduced, thereby avoiding interference by the spacer.

In one embodiment, the second metal layer 24 may further include: an electrode portion 242 disposed on the gate 222 and corresponding to the position of the gate 222 ; the thickness of the second metal portion 241 is greater than the thickness of the electrode portion 242 . Certainly, in other implementation manners, the thickness of the second metal part 241 may also be equal to the thickness of the electrode part 242 .

In another embodiment, as shown in FIG. 5 , the display panel further includes: a third metal layer 29 .

The third metal layer 29 is disposed between the second metal layer 24 and the anode layer 26, and the third metal layer 29 includes a third metal portion 291; the third metal portion 291 is disposed directly above the second metal portion 241, that is, the third metal portion 291 is disposed between the second metal portion 241 and the detection terminal 261. Since the third metal part is added below the detection terminal, the height of the detection terminal is further increased, and the height difference between the detection terminal and the spacer is further reduced, thereby avoiding interference by the spacer.

In one embodiment, in order to further increase the height of the detection terminal, the third metal layer 29 further includes: a source and drain 292 disposed on the electrode portion 242 , the orthographic projection of the source and drain 292 on the base substrate 21 does not overlap with the orthographic projection of the electrode portion 242 on the base substrate 21 , and the thickness of the third metal portion 291 is greater than the thickness of the source and drain 292 . In other implementations, the thickness of the third metal portion 291 may also be equal to the thickness of the source and drain electrodes 292 .

The display panel may further include a first insulating layer 23 and/or a second insulating layer 25 , the first insulating layer 23 is disposed between the first metal layer 22 and the second metal layer 24 , and the second insulating layer 25 is disposed between the second metal layer 24 and the third metal layer 29 .

In another preferred embodiment, the height of the detection terminal 261 may also be greater than the height of the spacer 28 . Of course, in other implementation manners, the height of the detection terminal 261 may also be equal to the height of the spacer 28 .

It can be understood that, in other embodiments, the display panel may include one or both of the first metal layer, the second metal layer and the third metal layer. In other embodiments, the detection terminal can also be raised in other ways, such as increasing the height of an insulating layer under the detection terminal, or in other implementations, the height of the detection terminal can also be increased by increasing the thickness of the detection terminal, and the specific method is not limited thereto.

An embodiment of the present application further provides a display device, which includes any one of the above display panels.

Although not shown, the display device may also include a camera, a Bluetooth module, etc., which will not be repeated here.

The display devices include but are not limited to mobile phones, tablet computers, computer monitors, game consoles, display screens, televisions, wearable devices, and other living appliances or household appliances with display functions.

The display panel and the display device in the embodiment of the present application include a detection area, and the display panel further includes: a substrate substrate, including a first sub-section, the position of the first sub-section corresponds to the position of the detection area; an anode layer, including a detection terminal, and the detection terminal is provided on the first sub-section; a defined layer is provided on the first sub-section, and the defined layer is provided with an opening area, and the position of the opening area corresponds to the position of the detection terminal; the height of the detection terminal is at least greater than the height of the defined layer; It is greater than the height of the limiting layer, so the height difference between the detection terminal and the spacer is reduced, thereby avoiding the interference of the spacer, and then the image of the terminal to be detected can be accurately acquired, which is convenient for probe access and measurement, and improves the product yield of the display panel.

The display panel and the display device provided by the embodiments of the present application have been introduced in detail above. The principles and implementation methods of the present application are explained by using specific examples in this paper. The description of the above embodiments is only for helping the understanding of the present application. At the same time, for those skilled in the art, based on the idea of this application, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the application.

Claims (9)

1. A display panel, comprising: a detection area, the display panel further comprising:

the substrate comprises a first sub-part, and the position of the first sub-part corresponds to the position of the detection area;

the anode layer comprises a detection terminal, and the detection terminal is arranged on the first sub-part;

a limiting layer arranged on the first sub-part, wherein an opening area is arranged on the limiting layer, and the position of the opening area corresponds to the position of the detection terminal; the height of the detection terminal is at least greater than the height of the limiting layer;

and the spacer is arranged on the limiting layer, and the height of the detection terminal is larger than that of the spacer.

2. The display panel of claim 1, further comprising:

the first metal layer comprises a first metal part, the first metal part is arranged between the first sub-part and the detection terminal, the detection terminal is arranged above the first metal part, and the detection terminal covers part of the first metal part.

3. The display panel of claim 2, further comprising: a display area; the first metal layer further includes:

the grid electrode is positioned in the display area;

the thickness of the first metal part is greater than that of the grid electrode.

4. The display panel of claim 3, further comprising:

a second metal layer disposed between the first metal layer and the anode layer, the second metal layer including a second metal portion; the second metal part is arranged right above the first metal part.

5. The display panel of claim 4, wherein the second metal layer further comprises:

an electrode part arranged on the grid electrode and corresponding to the position of the grid electrode; the thickness of the electrode portion is smaller than that of the second metal portion.

6. The display panel of claim 5, further comprising:

a third metal layer disposed between the second metal layer and the anode layer, the third metal layer including a third metal portion; the third metal part is arranged right above the second metal part.

7. The display panel of claim 6, wherein the third metal layer further comprises:

the source and drain electrodes are arranged on the electrode parts, orthographic projection of the source and drain electrodes on the substrate is not overlapped with orthographic projection of the electrode parts on the substrate, and the thickness of the third metal part is larger than that of the source and drain electrodes.

8. The display panel of claim 6, further comprising:

and the second insulating layer is arranged between the second metal layer and the third metal layer.

9. A display device comprising the display panel according to any one of claims 1 to 8.