CN111834401B - Display panel and display terminal - Google Patents
Display panel and display terminal Download PDFInfo
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- CN111834401B CN111834401B CN202010130363.2A CN202010130363A CN111834401B CN 111834401 B CN111834401 B CN 111834401B CN 202010130363 A CN202010130363 A CN 202010130363A CN 111834401 B CN111834401 B CN 111834401B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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Abstract
The invention relates to the technical field of display, and discloses a display panel and a terminal, wherein the display panel comprises: a transparent display area and a non-transparent display area; the transparent display region includes a first support layer disposed on a substrate; the non-transparent display area comprises a source drain electrode metal layer and a second supporting layer which are stacked on the substrate; the thickness of the first support layer is greater than the thickness of the second support layer. Compared with the prior art, the display panel and the terminal provided by the embodiment of the invention have the advantage of reducing the generation of Newton rings.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a terminal.
Background
The full-screen technology and the full-screen terminal are one of the most popular technologies at present and are popular and sought after by the majority of users. The full screen technology is a relatively broad definition of the ultra-high screen ratio terminal design in the display industry. The explanation is that the front of the terminal is completely provided with a screen, the display interface of the terminal is completely covered by the screen, and the four frame positions of the terminal are designed without frames, so that the ultrahigh screen ratio close to 100% is pursued. Since the full-face screen occupies the entire front face of the terminal, in the prior art, photosensitive elements such as a front camera are generally arranged under the screen, that is, a camera under the screen. In order to ensure the normal work of the camera under the screen, when the terminal shoots, the display area covering the camera under the screen can be changed into a transparent state, so that the incidence of light rays is ensured.
However, the inventor of the present invention finds that newton's rings exist in the display panel in the prior art, which affects the normal operation of the display panel and the under-screen camera.
Disclosure of Invention
An object of embodiments of the present invention is to provide a display panel and a terminal, which can effectively reduce the generation of newton rings.
To solve the above technical problem, an embodiment of the present invention provides a display panel including: a transparent display area and a non-transparent display area; the transparent display region includes a first support layer disposed on a substrate; the non-transparent display area comprises a source drain electrode metal layer and a second supporting layer which are stacked on the substrate; the thickness of the first support layer is greater than the thickness of the second support layer.
Embodiments of the present invention also provide a terminal, including the display panel as described above, and a photosensitive element disposed under the transparent display area.
Compared with the prior art, the embodiment of the invention has the advantages that the thickness of the first supporting layer is larger than that of the second supporting layer, and the height difference caused by the source drain metal layer below the second supporting layer is offset, so that the generation of Newton rings is reduced, and the normal work of the display panel and the terminal is ensured.
Preferably, the source and drain metal layer includes an embedding portion embedded in the substrate and a protruding portion connected to the embedding portion and protruding from the substrate, and a thickness difference between the first support layer and the second support layer is smaller than a thickness of the protruding portion. The phenomenon that the height difference caused by the source drain metal layer is offset due to the fact that the thickness difference between the first supporting layer and the second supporting layer is too large, namely the height of the top end of the first supporting layer is higher than that of the top end of the second supporting layer is avoided, and therefore generation of Newton rings is effectively reduced.
Preferably, the source and drain metal layer includes an embedding portion embedded in the substrate and a protruding portion connected to the embedding portion and protruding from the substrate, and a thickness difference between the first support layer and the second support layer is equal to a thickness of the protruding portion. The thickness difference caused by the source drain metal layer can be effectively eliminated, so that the generation condition of the Newton ring is thoroughly eliminated, the generation of the Newton ring is avoided, and the normal work of the display panel is further ensured.
Preferably, the method further comprises the following steps: the pixel definition layer is arranged on the substrate and covers the source drain metal layer; the first support layer and the second support layer are disposed on the pixel defining layer.
Preferably, the method further comprises the following steps: the anode layer is arranged between the pixel defining layer and the source drain metal layer; and the source drain metal layer is connected with the anode layer.
Preferably, the first support layer, the second support layer and the pixel defining layer are integrally formed. The first supporting layer, the second supporting layer and the pixel definition layer are integrally formed, so that the preparation process of the display panel can be effectively simplified, and the preparation efficiency is improved.
Preferably, the first support layer includes a plurality of first support pillars spaced apart from each other, and a thickening layer disposed between the first support pillars and the substrate; the second supporting layer comprises a plurality of second supporting columns which are arranged at intervals; the height of the first support column is equal to the height of the second support column. The height of the first supporting column is equal to that of the second supporting column, the first supporting column and the second supporting column can be simultaneously prepared, and the placing process is effectively simplified.
Preferably, the source and drain metal layer includes an embedding portion embedded in the substrate and a protruding portion connected to the embedding portion and protruding from the substrate, and the thickening layer has a thickness equal to that of the protruding portion. The thickness difference caused by the source drain metal layer can be offset through the thickening layer, so that Newton rings are thoroughly avoided, and the normal work of the display panel is ensured.
Preferably, the thickening layer comprises a plurality of thickening tables arranged at intervals, and the first support columns are arranged on the thickening tables. Because the area of thickening platform is less, also less to the influence of transmissivity to the effectual transmissivity that promotes transparent display area promotes the photosensitive element's that sets up under the transparent display area work efficiency.
Preferably, the liquid crystal display device further includes a cathode layer covering the first and second support layers, and an encapsulation layer covering the cathode layer.
Compared with the prior art, the embodiment of the invention has the advantages that the thickness of the first supporting layer is larger than that of the second supporting layer, and the height difference caused by the source drain metal layer below the second supporting layer is offset, so that the generation of Newton rings is reduced, and the normal work of the display panel and the terminal is ensured.
Drawings
Fig. 1 is a schematic cross-sectional view of a display panel according to a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a display panel according to a second embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a display panel according to a third embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the present invention;
FIG. 5 is a flow chart of a process for manufacturing a display panel according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
In prior art full screen designs, the inventors of the present invention found that the design of the transparent display area is different from the design of the non-transparent display area. In the transparent display area, in order to ensure the transparency of the transparent display area, a source/drain metal layer is generally not involved below a support layer, but is arranged below the support layer of the transparent display area, and due to the existence of the source/drain metal layer, a height difference exists between the support layer of the transparent display area and the support layer of the non-transparent display area, and the height difference causes the scattering of incident light to form a newton ring. If the source/drain metal layer is directly added and arranged below the supporting layer of the transparent display area, the transmittance of the transparent display area is reduced, and the light collection effect of photosensitive elements such as a camera is poor. In order to solve this technical problem, the inventors of the present invention provide the following technical solutions.
A first embodiment of the present invention relates to a display panel, as shown in fig. 1, including: a transparent display area 100 and a non-transparent display area 200. Wherein the transparent display area 100 includes a first support layer 101 disposed on a substrate 300; the non-transparent display region 200 includes a source-drain metal layer 201 and a second support layer 202 stacked on the substrate 300. The thickness of the first support layer 101 is greater than the thickness of the second support layer 202.
Compared with the prior art, the thickness of the first supporting layer 101 arranged in the display panel provided in the first embodiment of the present invention is greater than the thickness of the second supporting layer 202, so that the height difference between the transparent display area 100 and the non-transparent display area 200 caused at least in part by the source/drain metal layer 201 is offset, the generation of newton rings is reduced, and the influence of the newton rings on the operation of the display panel is reduced.
Further, in this embodiment, the source-drain metal layer 201 includes an embedding portion 2011 of the embedding substrate 300 and a protrusion 2012 connected to the embedding portion 2011 and protruding from the embedding substrate 300, and a difference in thickness between the first support layer 101 and the second support layer 202 is smaller than a thickness of the protrusion 2012. By setting the thickness difference between the first support layer 101 and the second support layer 202 to be smaller than the thickness of the protrusion 2012, it can be avoided that a new height difference is generated after the height difference caused by the source/drain metal layer 201 is offset due to an excessively large thickness difference between the first support layer 101 and the second support layer 202, that is, the height of the top end of the first support layer 101 is higher than the height of the top end of the second support layer 202, so that the generation of newton rings is effectively reduced.
It is understood that the difference between the thicknesses of the first support layer 101 and the second support layer 202 is smaller than the thickness of the protrusion 2012, which is only a specific application example in this embodiment and is not a limitation, and in other embodiments of the present invention, other situations may also occur, for example, the difference between the thicknesses of the first support layer 101 and the second support layer 202 is equal to the thickness of the protrusion 2012. The thickness difference between the first support layer 101 and the second support layer 202 is equal to the thickness of the protrusion 2012, so that the height difference caused by the source/drain metal layer 201 can be completely offset, thereby avoiding the generation of newton rings and avoiding the influence of the newton rings on the operation of the display panel.
Further, in this embodiment, the liquid crystal display device further includes a pixel defining layer 400 disposed on the substrate 300, and the pixel defining layer 400 is disposed to cover the source/drain metal layer 201. The first support layer 101 and the second support layer 202 are both disposed on the pixel defining layer 400.
In addition, an anode layer 500 is disposed between the pixel defining layer 400 and the source and drain metal layers 201, and the anode layer 500 is connected to the source and drain metal layers 201.
Specifically, in the present embodiment, the liquid crystal display device further includes a cathode layer 600 covering the first support layer 101 and the second support layer 202, and an encapsulation layer 700 covering the cathode layer 600.
In the present embodiment, the non-transparent display area 200 includes a transition area 203 adjacent to the transparent display area 100. A source-drain metal layer for supporting light emission of the light emitting pixel unit in the transparent display region 100 is disposed in the transition region and is electrically connected to the anode disposed in the transparent display region 100 through a conductive line 800. By the arrangement, structures such as a source drain metal layer and the like can be prevented from being arranged in the transparent display area 100, so that the transmittance of the transparent display area 100 is effectively improved.
Further, the substrate 300 sequentially includes a substrate 301, a blocking layer 302 formed above the substrate 301, a buffer layer 303 formed above the blocking layer 302, a channel 304 formed above the buffer layer 303, a first gate insulating layer 305 covering the channel 304, a gate 306 disposed on the first gate insulating layer 305, a source-drain metal layer 201 penetrating through the first gate insulating layer 305, a second gate insulating layer 307 located above the first gate insulating layer 305 and covering the gate 306, and an intermediate insulating layer 308 covering the second gate insulating layer 307.
Preferably, in the present embodiment, the first support layer 101 and the second support layer 202 are prepared in the same layer. The preparation of the first supporting layer 101 and the second supporting layer 202 on the same layer can effectively simplify the preparation process and improve the preparation efficiency.
Specifically, in the present embodiment, when the first support layer 101 and the second support layer 202 are prepared on the same layer, the first support layer 101 and the second support layer 202 having different thicknesses are prepared by setting mask plates having different transmittances. Thereby effectively simplifying the preparation process and improving the preparation efficiency.
A second embodiment of the present invention relates to a display panel. The second embodiment is substantially the same as the first embodiment, and includes the structures of the transparent display area 100, the non-transparent display area 200, the substrate 300, and the like, and the main differences are that: in the first embodiment, the first support layer 101 is a single layer structure. In the second embodiment of the present invention, as shown in fig. 2, the first support layer 101 includes a plurality of first support columns 1011 spaced apart from each other, and a thickening layer 1012 disposed between the first support columns 1011 and the substrate 100.
In addition, the second support layer 202 includes a plurality of second support columns 2021 disposed at intervals, and the heights of the first support columns 1011 and the second support columns 2021 are equal.
Compared with the prior art, in the display panel provided by the second embodiment of the present invention, the thickening layer 1012 is disposed below the first support column 1011, and the height difference caused by part of the source/drain metal layer 201 is offset by the thickening layer 1012, so as to reduce the generation of newton rings and ensure the normal operation of the display panel. In addition, the first support column 1011 and the second support column 2021 are arranged to have the same height, so that the first support column 1011 and the second support column 2021 can be prepared simultaneously in the preparation process, and the preparation process flow is simplified.
It is understood that in this embodiment, thickening layer 1012 is a transparent structure. The thickening layer 1012 is arranged to be a transparent structure, so that the transmittance of the transparent display area is not affected, and the normal operation of the display panel is ensured.
Preferably, in the present embodiment, the thickness of the thickening layer 1012 is equal to the thickness of the protrusion 2012. With the arrangement, the height difference caused by the source/drain metal layer 201 can be offset by the thickening layer 1012, so that Newton rings are completely eliminated, and the normal operation of the display panel is ensured.
It is understood that, the foregoing thickness of the thickening layer 1012 being equal to the thickness of the source protrusion 2012 is only a specific example in this embodiment, and is not limited thereto, and in other embodiments of the present invention, the thickness of the thickening layer 1012 may be smaller or larger than the thickness of the protrusion 2012, and in the case that the thickness difference between the thicknesses of the thickening layer 1012 and the protrusion 2012 is smaller than the thickness of the protrusion 2012, the generation of newton rings may be effectively reduced, and the display quality of the display panel is improved.
A third embodiment of the present invention relates to a display panel. The third embodiment is substantially the same as the second embodiment, and includes the structures of the transparent display area 100, the non-transparent display area 200, the substrate 300, and the like, and the main differences are that: in the second embodiment, the thickening layer 1012 is a single layer structure. In the third embodiment of the present invention, as shown in fig. 3, the thickening layer 1012 includes a plurality of thickening stages 1012a disposed at intervals from each other, and the first support columns 1011 are disposed on the thickening stages 1012 a.
Compared with the prior art, the display panel provided by the third embodiment of the invention retains all technical effects of the first embodiment, and has a small area of the thickening table 1012a and a small influence on the transmittance, so that the transmittance of the transparent display area is effectively improved, and the working efficiency of the photosensitive elements such as the camera and/or the fingerprint recognition device arranged below the transparent display area is improved.
A fourth embodiment of the present invention relates to a display panel. The fourth embodiment is substantially the same as the first embodiment, and includes the structures of the transparent display area 100, the non-transparent display area 200, the substrate 300, and the like, and the main differences are that: in the second embodiment, the first support layer 101 and the second support layer 202 are prepared in the same layer and are prepared separately from the pixel defining layer 400. In the third embodiment of the present invention, as shown in fig. 4, the first supporting layer 101, the second supporting layer 202 and the pixel defining layer 400 are integrally formed. The specific preparation steps are shown in fig. 5 and comprise:
step S101: a substrate 300 is formed.
Step S102: an anode layer 500 is formed on the substrate 300.
Step S103: a pixel defining layer 400 is formed on the anode layer 500.
Step S104: the pixel defining layer 400 is exposed through a mask plate to form a first supporting layer and a second supporting layer having different thicknesses.
Specifically, in this embodiment, the mask includes a transparent exposure region corresponding to the transparent display region and a non-transparent exposure region corresponding to the non-transparent display region. Wherein, the transparent exposure area and the non-transparent exposure area have different transmittances, and the first support layer 101 and the second support layer 202 having different thicknesses are formed, thereby reducing the generation of Newton's rings.
Step S405: forming a cathode layer 600 and an encapsulation layer 700.
Compared with the prior art, the display panel provided by the fourth embodiment of the invention, while maintaining all technical effects of the first embodiment, prepares the first supporting layer 101, the second supporting layer 202 and the pixel defining layer 400 in the same layer, and can further simplify the preparation process and improve the preparation efficiency of the display panel.
A fifth embodiment of the present invention relates to a terminal, as shown in fig. 6, including the display panel provided in the previous embodiments, the display panel including a transparent display area 100 and a non-transparent display area 200, and a photosensitive element 10 disposed under the transparent display area 100.
Compared with the prior art, the terminal provided by the fifth embodiment of the present invention includes the display panel provided by the foregoing embodiments, and therefore, the terminal provided by the fifth embodiment of the present invention has the same technical effects as those of the foregoing embodiments, and further description thereof is omitted.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of practicing the invention, and that various changes in form and detail may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A display panel, comprising:
a transparent display area and a non-transparent display area;
the transparent display region includes a first support layer disposed on a substrate;
the non-transparent display area comprises a source drain electrode metal layer and a second supporting layer which are stacked on the substrate;
the thickness of the first supporting layer is greater than that of the second supporting layer;
the source and drain electrode metal layer comprises an embedding part embedded into the substrate and a protruding part connected with the embedding part and protruding out of the substrate, and the thickness difference between the first supporting layer and the second supporting layer is smaller than or equal to the thickness of the protruding part of the source and drain electrode metal layer.
2. The display panel according to claim 1, characterized by further comprising:
the pixel definition layer is arranged on the substrate and covers the source drain metal layer;
the first support layer and the second support layer are disposed on the pixel defining layer.
3. The display panel according to claim 2, characterized by further comprising:
the anode layer is arranged between the pixel defining layer and the source drain metal layer;
and the source drain metal layer is connected with the anode layer.
4. The display panel of claim 2, wherein the first support layer, the second support layer, and the pixel defining layer are integrally formed.
5. The display panel according to claim 1, wherein the first support layer comprises a plurality of first support pillars disposed at intervals from each other, and a thickening layer disposed between the first support pillars and the substrate;
the second supporting layer comprises a plurality of second supporting columns which are arranged at intervals;
the height of the first support column is equal to the height of the second support column.
6. The display panel according to claim 5, wherein the source/drain metal layer includes an embedded portion embedded in the substrate and a protruding portion connected to the embedded portion and protruding from the substrate, and a thickness of the thickening layer is equal to a thickness of the protruding portion.
7. The display panel according to claim 5, wherein the thickening layer comprises a plurality of thickening stages disposed at intervals from each other, and the first support column is disposed on the thickening stages.
8. A terminal comprising the display panel according to any one of claims 1 to 7, and a photosensitive element disposed under the transparent display region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010130363.2A CN111834401B (en) | 2020-02-28 | 2020-02-28 | Display panel and display terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010130363.2A CN111834401B (en) | 2020-02-28 | 2020-02-28 | Display panel and display terminal |
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| Publication Number | Publication Date |
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| CN111834401A CN111834401A (en) | 2020-10-27 |
| CN111834401B true CN111834401B (en) | 2022-10-25 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113113456B (en) * | 2021-03-31 | 2022-11-08 | 武汉华星光电半导体显示技术有限公司 | OLED display panel, preparation method thereof and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360840A (en) * | 2018-09-28 | 2019-02-19 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN110047880A (en) * | 2019-03-28 | 2019-07-23 | 武汉华星光电半导体显示技术有限公司 | Display panel |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360840A (en) * | 2018-09-28 | 2019-02-19 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN110047880A (en) * | 2019-03-28 | 2019-07-23 | 武汉华星光电半导体显示技术有限公司 | Display panel |
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