CN111863909A - Display substrate, manufacturing method thereof and display device - Google Patents
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- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
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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
- H10K59/17—Passive-matrix OLED displays
- H10K59/179—Interconnections, e.g. wiring lines or terminals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The invention discloses a display substrate, a manufacturing method thereof and a display device, comprising the following steps: the conductive layer is positioned on the substrate base plate; wherein, the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module; the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the reflective anodes in a one-to-one correspondence manner; the wiring in the first display area is transmission type wiring. When the light-taking module is a camera module, the transmission type wiring is set as the wiring of the transmission type through the wiring in the first display area corresponding to the light-taking module, the shielding of the wiring to the light is avoided, the transmittance of the light is improved, and therefore a better imaging effect is achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate, a manufacturing method thereof and a display device.
Background
With the rapid development of display technology, the requirements of Organic Light-emitting diode (OLED) displays on the appearance are gradually increased in addition to the functions of traditional information display, and the larger screen occupation ratio is the trend of the future market. Through setting up camera etc. at the back of display, can save camera etc. at the positive occupation space of display, promoted the screen by a wide margin and occupied than, therefore the technique of making a video recording is prepared in consumer's favor under the screen.
Disclosure of Invention
Embodiments of the present invention provide a display substrate, a method for manufacturing the same, and a display device, so as to improve an imaging effect by increasing a light transmittance.
Therefore, an embodiment of the present invention provides a display substrate, including: the conductive layer is positioned on the substrate base plate; wherein,
the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module;
the conductive layer includes: the reflective anodes are arranged on the substrate, and the routing lines are positioned at the gaps among the reflective anodes and electrically connected with the reflective anodes in a one-to-one correspondence manner; wherein the trace in the first display region is a transmissive trace.
Optionally, in the display substrate provided in an embodiment of the present invention, the reflective anode includes: the first light-transmitting layer, the reflective layer, and the second light-transmitting layer are provided in a stacked manner.
Optionally, in the display substrate provided in the embodiment of the present invention, the first light-transmitting layer extends to the gap to be multiplexed as the transmission-type trace.
Optionally, in the display substrate provided in an embodiment of the present invention, a ratio of the thickness of the first light-transmitting layer to the thickness of the second light-transmitting layer is greater than or equal to 3 and less than or equal to 5.
Optionally, in the display substrate provided in an embodiment of the present invention, the display substrate further includes: a second display area surrounding the first display area, the traces in the second display area being reflective traces;
the first light-transmitting layer, the reflecting layer and the second light-transmitting layer all extend to the gap to be multiplexed as the reflection-type wiring.
Optionally, in the display substrate provided in an embodiment of the present invention, the display substrate further includes: the pixel defining layer is positioned on one side, away from the substrate, of the conductive layer;
the pixel defining layer comprises a plurality of pixel openings, the reflective anodes are arranged in the pixel openings in a one-to-one correspondence mode, and the orthographic projection of the routing lines on the substrate base plate is overlapped with the orthographic projection edge of the pixel defining layer.
Optionally, in the display substrate provided in the embodiment of the present invention, a refractive index of the pixel defining layer is greater than or equal to 1.6 and less than or equal to 1.7.
Based on the same inventive concept, an embodiment of the present invention further provides a manufacturing method of the display substrate, including:
providing a substrate base plate; the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module;
forming a conductive layer on the substrate base plate; the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the wiring lines in a one-to-one correspondence manner; wherein the trace in the first display region is a transmissive trace.
Optionally, in the manufacturing method provided in the embodiment of the present invention, forming a conductive layer on the substrate specifically includes:
sequentially forming a first light-transmitting layer, a reflecting layer and a second light-transmitting layer in the first display area and the second display area of the substrate; wherein the second display area surrounds the first display area;
forming a plurality of reflection type anodes formed by the first light-transmitting layer, the reflection layer and the second light-transmitting layer and a plurality of corresponding reflection type wires in the first display area and the second display area by adopting a first mask plate;
and etching the reflection-type wire in the first display area by adopting a second mask plate to form a transmission-type wire consisting of the first light-transmitting layer.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display substrate and the light-taking module; the light extraction module is positioned on one side of the first display area, which is deviated from the display surface.
The invention has the following beneficial effects:
the embodiment of the invention provides a display substrate, a manufacturing method thereof and a display device, wherein the display substrate comprises the following components: the conductive layer is positioned on the substrate base plate; wherein, the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module; the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the reflective anodes in a one-to-one correspondence manner; the wiring in the first display area is transmission type wiring. The transmission type wiring is arranged on the wiring in the first display area where the light-taking module (such as a camera module) is located, so that the shielding of the wiring on light is avoided, the transmittance of the light is improved, and a better imaging effect is realized.
Drawings
FIG. 1 is a schematic structural diagram of a sub-pixel in a first display area according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a sub-pixel in a second display area according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display substrate provided in an embodiment of the invention in a manufacturing process;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present invention. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "inner", "outer", "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The display provided with the camera under the screen in the related art realizes photographing or video recording in the following way: the diffuse reflection light of the object in front of the display irradiates to the camera under the screen through the gaps among the sub-pixels in the display, so that the object is shot. However, in the related art, the trace is disposed at the edge region of the gap to load the driving signal for the sub-pixel through the trace, and the trace reduces the transmittance of the diffuse reflection light to a certain extent, resulting in a poor imaging effect.
In view of the above technical problems in the related art, an embodiment of the present invention provides a display substrate, as shown in fig. 1, including: a substrate base plate 1, and a conductive layer 2 positioned on the substrate base plate 1; wherein,
the base substrate 1 includes: a first display area AA1, a side of the first display area AA1 facing away from the display surface is configured to be provided with a light-extracting module (not shown in the figure);
the conductive layer 2 includes: a plurality of reflective anodes 201, and traces 202 located at gaps between the reflective anodes 201 and electrically connected to the reflective anodes 201 in a one-to-one correspondence; the trace 202 in the first display area AA1 is a transmission type trace 2021.
In the display substrate provided by the embodiment of the invention, the light-extracting module can be a camera module, an optical fingerprint identification module and the like. When the light-extracting module is a camera module, the transmission-type wiring 2021 is arranged on the wiring 202 in the first display area AA1 corresponding to the light-extracting module, so that the shielding of the wiring 202 on light is avoided, the transmittance of the light is improved, and a better imaging effect is realized.
Alternatively, in the above display substrate provided in an embodiment of the present invention, as shown in fig. 1, the reflective anode 201 includes: first light-transmitting layer 2011, reflective layer 2012, and second light-transmitting layer 2013 are provided in a stacked arrangement. Specifically, the first light-transmitting layer 2011 and the second light-transmitting layer 2013 may be made of a conductive material with good light transmittance, such as ITO or IZO, and the reflective layer is made of a material with good reflectivity, such as Ag or Al.
Alternatively, in the display substrate provided in the embodiment of the invention, as shown in fig. 1, the first transparent layer 2011 extends to a gap between the reflective anodes 201 to be multiplexed as the transmissive trace 2021. In specific implementation, a first transparent layer 2011, a reflective layer 2012 and a second transparent layer 2013 which are stacked are formed in a region where the reflective anode 201 is located and a region where the trace 202 is located through a one-time patterning process, and then the reflective layer 2012 and the second transparent layer 2013 in the region where the trace 202 is located are etched away through one-time patterning, so that the transmissive trace 2021 is obtained.
Optionally, in the display substrate provided in the embodiment of the invention, in order to avoid that the first transparent layer 2011 may be etched away in the process of etching away the reflective layer 2012 and the second transparent layer 2013 in the region where the trace 202 is located, a thicker first transparent layer 2011 may be provided, for example, a ratio of the thickness of the first transparent layer 2011 to the thickness of the second transparent layer 2012 is set to be greater than or equal to 3 and less than or equal to 5, which may be set according to an actual etching condition, and is not limited herein. In addition, it should be noted that "thickness" in the present invention specifically means a thickness in a direction perpendicular to the base substrate 1.
Optionally, in the display substrate provided in an embodiment of the present invention, as shown in fig. 2, the display substrate further includes: the second display area AA2 surrounds the first display area AA1, and the trace 202 in the second display area AA2 is a reflective trace 2022;
the first transparent layer 2011, the reflective layer 2012 and the second transparent layer 2013 all extend to the gap between the reflective anodes 201 to be multiplexed as a reflective trace 2022.
Since the camera module is disposed on the opposite side of the display surface of the first display area AA1, only the trace 202 in the first display area AA1 affects the transmittance, and thus affects the imaging effect. Therefore, only the trace 202 in the first display area AA1 can be set as the light-transmissive trace 2021, and the trace 202 in the second display area AA2 does not need to be set as the light-transmissive trace 2021, so as to improve the production efficiency. Of course, in a specific implementation, the traces 202 in the first display area AA1 and the second display area AA2 may be set as the light-transmissive trace 2021, which is not limited herein.
Optionally, in the display substrate provided in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the display substrate further includes: a pixel defining layer 3 on a side of the conductive layer 2 facing away from the substrate 1;
the pixel defining layer 3 includes a plurality of pixel openings, the reflective anodes 201 are disposed in the pixel openings in a one-to-one correspondence, and an orthographic projection of the trace 202 on the substrate 1 overlaps with an orthographic projection edge of the pixel defining layer 3.
By arranging the orthographic projection of the wiring 202 on the substrate base plate 1 and the orthographic projection edge overlapping of the pixel definition layer 3, the adjacent wiring 202 can be insulated through the middle area (namely the area which is not overlapped with the wiring 202) of the pixel definition layer 3, and the signal crosstalk on the adjacent wiring 202 is avoided. In addition, since the reflective trace 2022 is regularly arranged in the edge region of the pixel defining layer 3 in the related art, and accordingly the pixel defining layer 3 which is not overlapped with the reflective trace 2022 serves as a light transmission hole, when light is irradiated to the camera module through the pixel defining layer 3, small hole diffraction occurs in the pixel defining layer 3, which causes image blurring. In the present disclosure, by setting the reflective trace 2022 in the first display area AA1 corresponding to the camera module as the transmissive trace 2021 made of ITO, IZO, etc., the area of the transparent hole is increased, thereby reducing the probability of diffraction to a certain extent and improving the imaging effect.
Optionally, in the display substrate provided in the embodiment of the present invention, the refractive index of the pixel defining layer 3 is greater than or equal to 1.6 and less than or equal to 1.7.
Since the refractive index of the transmissive trace 2021 made of ITO, IZO, or the like is greater than or equal to 1.8 and less than or equal to 2.0, the refractive index of the pixel defining layer 3 is set to be greater than or equal to 1.6 and less than or equal to 1.7, so that the refractive indexes of the transmissive trace 2021 and the pixel defining layer 3 are close to each other, and thus, the light does not undergo an obvious refraction phenomenon at the interface between the pixel defining layer 3 and the transmissive trace 2021, thereby reducing the energy loss caused by refraction and improving the imaging effect.
Optionally, in the display substrate provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the display substrate may further include: the light-emitting diode comprises a light-emitting functional layer 4, a transistor 5, a flat layer 6, a passivation layer 7, an interlayer dielectric layer 8, a gate insulating layer 9, a buffer layer 10 and a PI layer 11; the light-emitting functional layer 4 includes, but is not limited to, a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting material layer, a hole blocking layer, an electron transport layer, and an electron injection layer; the transistor 5 may be a top gate transistor or a bottom gate transistor, and specifically may include: the active layer 501, the gate electrode 502, the source electrode 503 and the drain electrode 504, and optionally, the material of the active layer 501 is amorphous silicon, polysilicon or oxide.
Based on the same inventive concept, embodiments of the present invention provide a method for manufacturing a display substrate, and because the principle of the method for solving the problem is similar to the principle of the method for solving the problem of the display substrate, the implementation of the method for manufacturing the display substrate provided by embodiments of the present invention can refer to the implementation of the display substrate provided by embodiments of the present invention, and repeated details are not repeated.
Specifically, the method for manufacturing the display substrate according to the embodiment of the present invention may specifically include the following steps:
providing a substrate base plate; the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module;
forming a conductive layer on a base substrate; the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the wiring lines in a one-to-one correspondence manner; wherein, the trace in the first display region is a transmission type trace 2021.
Optionally, in the manufacturing method provided in the embodiment of the present invention, as shown in fig. 3, forming the conductive layer on the substrate may specifically be implemented by the following steps:
a first light-transmitting layer 2011, a reflective layer 2012, and a second light-transmitting layer 2013 are sequentially formed in the first display area AA1 and the second display area AA2 of the base substrate 1.
Forming a plurality of reflective anodes 201 consisting of a first euphotic layer 2011, a reflective layer 2012 and a second euphotic layer 2013 and a plurality of corresponding reflective tracks 2022 in a first display area AA1 and a second display area AA2 by using a first mask; wherein the second display area AA2 surrounds the first display area AA 1; at this point, the fabrication of the reflective anode 201 and the reflective trace 2022 in the second display area AA2 is completed.
The reflective trace 2022 in the first display area AA1 is etched using the second mask to form a transmissive trace 2021 including a first transparent layer 2011. Specifically, the photoresist 12 may be coated on the layer where the reflective anode 201 and the reflective trace 2022 are located; then, after exposing and developing the photoresist 12 by using the second mask plate as a mask, the photoresist 12 above the reflective anode 201 in the first display area AA1 and in the second display area AA2 are retained to expose the reflective trace 2022 in the first display area AA 1; the exposed reflective layer 2012 and the second transparent layer 2013 in the first display area AA1 are etched by using the photoresist 12 above the reflective anode 201 in the first display area AA1 as a mask, and the first transparent layer 2011 is remained, so that the reflective trace 2022 in the first display area AA1 is changed into the transmissive trace 2021 formed by the first transparent layer 2011. At this point, the fabrication of the reflective anode 201 and the transmissive trace 2021 in the first display area AA1 is completed.
It should be noted that the fabrication of the light emitting functional layer 4, the transistor 5, the planarization layer 6, the passivation layer 7, the interlayer dielectric layer 8, the gate insulating layer 9, the buffer layer 10, the PI layer 11, the cathode, and the like is the same as that of the related art, and details are not repeated herein. In addition, the composition process related to the production of each film structure may include not only some or all of the processes of deposition, photoresist coating, mask masking, exposure, development, etching, photoresist stripping, etc., but also other processes, and is not limited herein, particularly, based on the pattern to be formed in the actual production process. For example, post-baking, printing, ink-jetting, or other processes for forming a predetermined pattern. The deposition process may be a chemical vapor deposition method, a plasma enhanced chemical vapor deposition method, or a physical vapor deposition method, which is not limited herein; the mask used in the mask process can be a half-tone mask, a single-slit diffraction mask or a gray-tone mask, which is not limited herein; the etching may be dry etching or wet etching, and is not limited herein.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the display substrate and the light-taking module, wherein the display substrate is provided by the embodiment of the invention; wherein, get the optical module and be located one side that first display area deviates from the display surface, get optical module and can be for making a video recording module, optics fingerprint identification module etc.. Alternatively, as shown in fig. 4, the display device may be a full screen display product, such as any product or component with a display function, for example, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a smart watch, a fitness wristband, a personal digital assistant, and the like. Other essential components of the display device should be understood by those skilled in the art, and are not described herein nor should they be construed as limiting the present invention. In addition, because the principle of solving the problems of the display device is similar to that of solving the problems of the display substrate, the implementation of the display device can be referred to the embodiment of the substrate, and repeated details are not repeated.
The display substrate, the manufacturing method thereof and the display device provided by the embodiment of the invention comprise the following steps: the conductive layer is positioned on the substrate base plate; wherein, the substrate base plate includes: a first display area, wherein a side of the first display area facing away from the display surface is configured to be provided with a light-extracting module (not shown in the figure); the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the reflective anodes in a one-to-one correspondence manner; the wiring in the first display area is transmission type wiring. When the light-taking module is a camera module, the transmission type wiring is set as the wiring of the transmission type through the wiring in the first display area corresponding to the light-taking module, the shielding of the wiring to the light is avoided, the transmittance of the light is improved, and therefore a better imaging effect is achieved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display substrate, comprising: the conductive layer is positioned on the substrate base plate; wherein,
the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module;
the conductive layer includes: the reflective anodes are arranged on the substrate, and the routing lines are positioned at the gaps among the reflective anodes and electrically connected with the reflective anodes in a one-to-one correspondence manner; wherein the trace in the first display region is a transmissive trace.
2. The display substrate of claim 1, wherein the reflective anode comprises: the first light-transmitting layer, the reflective layer, and the second light-transmitting layer are provided in a stacked manner.
3. The display substrate of claim 2, wherein the first light-transmissive layer extends to the gap for multiplexing as the transmissive trace.
4. The display substrate according to claim 3, wherein a ratio of a thickness of the first light-transmitting layer to a thickness of the second light-transmitting layer is greater than or equal to 3 and less than or equal to 5.
5. The display substrate of claim 2, further comprising: a second display area surrounding the first display area, the traces in the second display area being reflective traces;
the first light-transmitting layer, the reflecting layer and the second light-transmitting layer all extend to the gap to be multiplexed as the reflection-type wiring.
6. The display substrate of any one of claims 1-5, further comprising: the pixel defining layer is positioned on one side, away from the substrate, of the conductive layer;
the pixel defining layer comprises a plurality of pixel openings, the reflective anodes are arranged in the pixel openings in a one-to-one correspondence mode, and the orthographic projection of the routing lines on the substrate base plate is overlapped with the orthographic projection edge of the pixel defining layer.
7. The display substrate of claim 6, wherein the pixel defining layer has a refractive index greater than or equal to 1.6 and less than or equal to 1.7.
8. A method of manufacturing a display substrate according to any one of claims 1 to 7, comprising:
providing a substrate base plate; the substrate base plate includes: the side, which is far away from the display surface, of the first display area is configured to be provided with a light-taking module;
forming a conductive layer on the substrate base plate; the conductive layer includes: the reflective anodes are arranged on the substrate, and the reflective anodes are electrically connected with the wiring lines in a one-to-one correspondence manner; wherein the trace in the first display region is a transmissive trace.
9. The method of claim 8, wherein forming a conductive layer on the substrate base plate specifically comprises:
sequentially forming a first light-transmitting layer, a reflecting layer and a second light-transmitting layer in the first display area and the second display area of the substrate;
forming a plurality of reflection type anodes formed by the first light-transmitting layer, the reflection layer and the second light-transmitting layer and a plurality of corresponding reflection type wires in the first display area and the second display area by adopting a first mask plate; wherein the second display area surrounds the first display area;
and etching the reflection-type wire in the first display area by adopting a second mask plate to form a transmission-type wire consisting of the first light-transmitting layer.
10. A display device comprising the display substrate according to any one of claims 1 to 7, and a light extraction module; the light extraction module is positioned on one side of the first display area, which is deviated from the display surface.
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| CN202010736544.XA CN111863909A (en) | 2020-07-28 | 2020-07-28 | Display substrate, manufacturing method thereof and display device |
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| CN202010736544.XA CN111863909A (en) | 2020-07-28 | 2020-07-28 | Display substrate, manufacturing method thereof and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599712A (en) * | 2020-12-15 | 2021-04-02 | 云谷（固安）科技有限公司 | Display device, display panel and preparation method thereof |
| US12080212B2 (en) | 2021-10-21 | 2024-09-03 | Hefei Visionox Technology Co., Ltd. | Array substrate and display panel |
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| CN110767717A (en) * | 2019-04-30 | 2020-02-07 | 昆山国显光电有限公司 | Array substrate, display panel and display device |
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