CN112289777B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112289777B CN112289777B CN202011170213.0A CN202011170213A CN112289777B CN 112289777 B CN112289777 B CN 112289777B CN 202011170213 A CN202011170213 A CN 202011170213A CN 112289777 B CN112289777 B CN 112289777B
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- detection terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
- H01L22/32—Additional lead-in metallisation on a device or substrate, e.g. additional pads or pad portions, lines in the scribe line, sacrificed conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1218—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or structure of the substrate
Abstract
The embodiment of the application discloses display panel and display device, wherein, this display panel includes: 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. According to the display panel and the display device, the product yield can be improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
The flexible display panel has the advantages of light weight, flexibility, folding and the like, the proportion of the flexible display panel in electronic equipment is higher in recent years, the array area of the display panel is basically designed by adopting 7T1C, and the requirement on the electrical property of a product is higher because of the compensation circuit; the equipment for monitoring the electrical properties on the production line basically adopts test element groups (Test Element Group, TEG).
When the TEG equipment measures the electrical property of a product, two identification procedures are needed, wherein the identification procedures are to grasp the image of the detection terminal through the image identification equipment to determine the position of the detection terminal, and then connect a probe of the TEG on the detection terminal. However, in the last recognition procedure, the interference of other film layers is easy, so that the image of the terminal to be detected cannot be accurately acquired, a probe cannot be accessed, further, measurement cannot be performed, and the product yield of the display panel is reduced.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can improve the product yield of the display panel.
The embodiment of the application provides a display panel, which comprises: 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.
The invention also provides a display device which comprises the display panel.
The display panel and the display device of the embodiment of the application comprise a detection area, and the display panel further comprises: 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; the spacer is arranged on the limiting layer; the height of the detection terminal is larger than that of the limiting layer, so that the height difference between the detection terminal and the spacer is reduced, interference from the spacer is avoided, images of the terminal to be detected can be accurately acquired, the probe and measurement are convenient to access, and the product yield of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
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 according to an embodiment of the disclosure.
Fig. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the disclosure.
Fig. 5 is a schematic cross-sectional view of a display panel according to another embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1, the conventional display panel includes: the display device comprises a first detection area and a display area, wherein the first detection area comprises a substrate base plate 11, a first insulating layer 12, a second insulating layer 13 and a first detection terminal 14, and the first detection terminal 14 is arranged on the same layer as a source electrode and a drain electrode in the display area. The periphery of the first detection terminal 14 is free from interference of other film layers, so the image recognition apparatus can grasp an image of the first detection terminal.
As shown in fig. 2, the display panel further includes: the second detection area comprises a substrate base plate 11, a first insulating layer 12, a second insulating layer 13, a second detection terminal 15, a limiting layer 16 and a spacer 17, wherein the second detection terminal 15 is arranged on the same layer as an anode in the display area, the limiting layer 16 is provided with an opening area, and the opening area corresponds 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, the film layer where the spacer 17 is located is focused first, and a height difference of approximately 3um exists between the spacer 17 and the second detection terminal 15, so that the aggregation effect of the image recognition device on the second detection terminal 15 is affected, and further image recognition failure is caused, access probe failure is caused, and further measurement cannot be performed.
Referring to fig. 3, fig. 3 is a schematic partial cross-sectional view of a display panel according to an embodiment of the disclosure.
As shown in fig. 3, the display panel of the present embodiment includes a detection area 101 and a display area 102, and further includes: a substrate 21, an anode layer 26 and a confinement layer 27.
The substrate 21 includes a first sub-portion 211, and a position of the first sub-portion 211 corresponds to a position of the detection region 101; referring to fig. 4, the substrate 21 includes a second sub-portion 212, and the position of the second sub-portion 212 corresponds to the position of the display area 102.
The anode layer 26 includes a detection terminal 261, and the detection terminal 261 is provided on the first sub-portion 211. Referring to fig. 4, anode layer 26 may also include an anode 262.
A limiting layer 27 disposed on the first sub-portion 211, wherein an opening area (not shown) is disposed on the limiting layer 27, and the position of the opening area corresponds to the position of the detection terminal 261; the height h2 of the detection terminal 261 is at least greater than the height h1 of the defining layer 27;
spacers 28 are provided on the confinement layer 27.
The height of the detection terminal is larger than that of the limiting layer, so that the height difference between the detection terminal and the spacer is reduced, interference from the spacer is avoided, images of the terminal to be detected can be accurately acquired, the probe and measurement are convenient to access, and the product yield of the display panel is improved.
In another embodiment, as shown in fig. 3 and 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, and the detection terminal 261 is disposed above the first metal portion 221, where the detection terminal 261 partially covers the first metal portion 221, or an area of an orthographic projection of the first metal portion 221 on the first sub-portion 211 is greater than or equal to an area of an orthographic projection of the detection terminal 261 on the first sub-portion 211. The first metal part is added below the detection terminal, so that the height of the detection terminal is increased, the height difference between the detection terminal and the spacer is reduced, and interference by the spacer is avoided.
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, the gate 222 being located within the display region 102; the thickness of the first metal part 221 is greater than the thickness of the gate electrode 222. Of course, in other embodiments, the thickness of the first metal portion 221 may be equal to the thickness of the gate electrode 222.
In another embodiment, as shown in fig. 3 and 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 provided directly above the first metal portion 221. That is, the second metal portion 241 is provided between the first metal portion 221 and the detection terminal 261. The second metal part is added below the detection terminal, so that the height of the detection terminal is further increased, the height difference between the detection terminal and the spacer is further reduced, and interference by the spacer is avoided.
In an embodiment, the second metal layer 24 may further include: an electrode portion 242, wherein the electrode portion 242 is provided on the gate electrode 222 and corresponds to the position of the gate electrode 222; the thickness of the second metal portion 241 is greater than the thickness of the electrode portion 242. Of course, in other embodiments, the thickness of the second metal portion 241 may be equal to the thickness of the electrode portion 242.
In another embodiment, as shown in fig. 5, the display panel further includes: a third metal layer 29.
A third metal layer 29 is disposed between the second metal layer 24 and the anode layer 26, the third metal layer 29 including 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. The third metal part is added below the detection terminal, so that the height of the detection terminal is further increased, the height difference between the detection terminal and the spacer is further reduced, and interference by the spacer is avoided.
In one embodiment, to further increase the height of the detection terminal, the third metal layer 29 further includes: and a source/drain electrode 292 disposed on the electrode portion 242, wherein an orthographic projection of the source/drain electrode 292 on the substrate 21 does not overlap with an orthographic projection of the electrode portion 242 on the substrate 21, and a thickness of the third metal portion 291 is greater than a thickness of the source/drain electrode 292. In other embodiments, the thickness of the third metal portion 291 may be equal to the thickness of the source/drain 292.
The display panel may further include a first insulating layer 23 and/or a second insulating layer 25, the first insulating layer 23 being disposed between the first metal layer 22 and the second metal layer 24, and the second insulating layer 25 being 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 embodiments, the height of the detection terminal 261 may be equal to the height of the spacer 28.
It is understood that in other embodiments, the display panel may include one or two of the first metal layer, the second metal layer, and the third metal layer. In other embodiments, the height of the detection terminal may be increased by other means, such as increasing the height of a certain insulating layer below the detection terminal, or in other embodiments, the height of the detection terminal may be increased by increasing the thickness of the detection terminal, and the specific manner is not limited thereto.
The embodiment of the application also provides a display device, which comprises any one of the display panels.
Although not shown, the display device may further include a camera, a bluetooth module, etc., which will not be described herein.
The display device includes, but is not limited to, a mobile phone, a tablet computer, a computer display, a game console, a display screen, a television, a wearable device, other household appliances or household appliances with display function, and the like.
The display panel and the display device of the embodiment of the application comprise a detection area, and the display panel further comprises: 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; the spacer is arranged on the limiting layer; the height of the detection terminal is larger than that of the limiting layer, so that the height difference between the detection terminal and the spacer is reduced, interference from the spacer is avoided, images of the terminal to be detected can be accurately acquired, the probe and measurement are convenient to access, and the product yield of the display panel is improved.
The display panel and the display device provided in the embodiments of the present application have been described in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the above examples is only for aiding in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170213.0A CN112289777B (en) | 2020-10-28 | 2020-10-28 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170213.0A CN112289777B (en) | 2020-10-28 | 2020-10-28 | Display panel and display device |
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| CN112289777A CN112289777A (en) | 2021-01-29 |
| CN112289777B true CN112289777B (en) | 2023-07-25 |
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| CN202011170213.0A Active CN112289777B (en) | 2020-10-28 | 2020-10-28 | Display panel and display device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114296278B (en) * | 2021-11-30 | 2023-04-25 | 滁州惠科光电科技有限公司 | Array substrate, display panel and display device |
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| CN112289777A (en) | 2021-01-29 |
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