CN111682055A - Display substrate, preparation method thereof, display panel and display device - Google Patents
Display substrate, preparation method thereof, display panel and display device Download PDFInfo
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- CN111682055A CN111682055A CN202010590183.2A CN202010590183A CN111682055A CN 111682055 A CN111682055 A CN 111682055A CN 202010590183 A CN202010590183 A CN 202010590183A CN 111682055 A CN111682055 A CN 111682055A
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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
- H10K59/131—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
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
Abstract
The invention provides a display substrate and a preparation method thereof, a display panel and a display device, wherein a first wiring area, a second wiring area and a camera area under a screen are arranged in a display area of the display substrate, the camera area under the screen is positioned between the first wiring area and the second wiring area, a transparent cathode layer is arranged in the camera area under the screen, the transparent cathode layer is formed on a substrate of the display substrate, and the transparent cathode layer is electrically connected with a first power supply wiring of the first wiring area and a first power supply wiring of the second wiring area respectively. The invention ensures that the power supply signal of the display substrate can directly pass through the camera area under the screen without winding the power supply wiring at the edge of the camera area under the screen, can ensure the wiring line width of the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area and the line spacing between the first power supply wiring and other wiring lines, realizes the reduction of the voltage drop of the power supply wiring, the problem of open circuit, the problem of short circuit and the problem of cross talk between the wires, and has small power supply voltage difference between the first wiring area and the second wiring area.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate, a display panel, a display device and a preparation method of the display substrate.
Background
Along with the popularization of the full-face screen, the camera arranged under the screen of the display area gradually becomes a mainstream, wherein the display area corresponding to the camera under the screen is dug to form the camera area under the screen to become a mainstream design, the camera area under the screen reserves the luminescent material layer and the transparent cathode layer, the product form of the full-face screen is shown in figure 1, 1 'is the camera area under the screen, 2' is the display area, 3 'is the connecting area, and 4' is the full-face screen.
As shown in fig. 2, the gate driving control traces 11 ', the data traces 12' and the power traces 13 'are usually disposed around the edge of the under-screen camera area 1' in the prior art. The edge metal winding of the camera area 1 'under the screen can reduce the light transmittance of the camera area 1' under the screen, and a black frame is formed.
However, the edge metal winding of the prior art under-screen camera area 1' has the following defects: because the whole screen 4 ' only has a metal level that can be used for data to walk line 12 ' and power and walk line 13 ', along with the reduction of black frame and the promotion of resolution ratio lead to the increase of data to walk line 12 ' quantity, can be used to walk the line 13 ' in the screen in the metal level and the edge wire-wound space of camera area 1 ' reduces under the screen reduces, make the line width and the line spacing of power to walk line 13 ' reduce, the line width of power is walked line 13 ' and is reduced and can increase the line resistance, and then increase the pressure drop and arouse that the edge in camera area 1 ' shows unevenly under the screen, and the line width reduces and can increase the power and walk the problem of opening a way, in addition, line spacing reduces then can lead to the line to.
Disclosure of Invention
In view of the foregoing problems, an embodiment of the present invention provides a display substrate, a display panel, a display device, and a method for manufacturing the display substrate, so as to solve the problem in the prior art that the line width and the line pitch of the power traces are small in the edge metal routing of the under-screen camera area.
In order to solve the above problems, an embodiment of the present invention discloses a display substrate, where a display area of the display substrate is provided with a first wire routing area, a second wire routing area, and a camera area under a screen, the camera area under the screen is located between the first wire routing area and the second wire routing area, a transparent cathode layer is provided in the camera area under the screen, the transparent cathode layer is formed on a substrate of the display substrate, and the transparent cathode layer is electrically connected to a first power supply wire of the first wire routing area and a first power supply wire of the second wire routing area, respectively.
In order to solve the above problem, an embodiment of the present invention further discloses a display panel including the display substrate.
In order to solve the above problem, an embodiment of the present invention further discloses a display device, including the display panel.
In order to solve the above problem, an embodiment of the present invention further discloses a method for manufacturing a display substrate, including:
providing a substrate corresponding to a display area, wherein the substrate comprises a first wiring area, a second wiring area and a camera area under a screen, and the camera area under the screen is positioned between the first wiring area and the second wiring area;
forming an inorganic layer and a first power line on both the first wiring region and the second wiring region of the substrate;
forming the inorganic layer and a first flat layer on an under-screen camera area of the substrate close to the first wiring area and the second wiring area, and forming a second flat layer on the first power supply line;
forming a lap joint layer on the first power supply line between the first and second flat layers;
forming a transparent cathode layer on the lapping layer of the under-screen camera area and the first flat layer; the lapping layer is electrically connected with the transparent cathode layer and the first power line respectively;
and forming a pixel defining layer on the lapping layer of the first wiring area and the second flat layer.
The embodiment of the invention has the following advantages: the first power routing is arranged in the first routing area and the second routing area respectively, the transparent cathode layer in the camera area under the screen is electrically connected with the first power routing in the first routing area and the first power routing in the second routing area, so that a power signal of the display substrate can directly penetrate through the camera area under the screen, the edge of the camera area under the screen is not required to be wound for realization, and the line width and the line distance of the power routing in the first routing area and the power routing in the second routing area and the area of the transparent cathode layer in the camera area under the screen are not influenced even if the number of the data routing is increased. Therefore, the wiring line width of the first power supply wiring in the first wiring area and the wiring line width of the first power supply wiring in the second wiring area and the line distance between the first power supply wiring in the second wiring area and other wiring lines can be ensured, the voltage drop of the power supply wiring, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem are reduced, the pressure difference between the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area is only the pressure difference caused by the under-screen camera area, the width of the under-screen camera area is far larger than the line width of the power supply wiring, and the pressure difference caused by the under-screen camera area is far smaller than the pressure difference caused by the edge winding of the power supply wiring in the under-screen camera area, so that the power supply pressure difference between the first wiring area and the second wiring area is ensured to be small, and the display uniformity of a display panel using the.
Drawings
FIG. 1 is a schematic view of the construction of a full panel;
FIG. 2 is a schematic diagram of the edge routing of an under-screen camera area in the prior art;
FIG. 3 is a schematic structural diagram of an embodiment of a display substrate according to the present invention;
FIG. 4 is a schematic structural view of section A-A of FIG. 3;
FIG. 5 is a schematic structural view of section B-B of FIG. 3;
FIG. 6 is a flowchart illustrating a method of fabricating a display substrate according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 3, which shows a schematic structural diagram of an embodiment of a display substrate 1 according to the present invention, a first wiring area 11, a second wiring area 12, and an under-screen camera area 13 are disposed in a display area 10 of the display substrate 1, the under-screen camera area 13 is located between the first wiring area 11 and the second wiring area 12, a transparent cathode layer 131 is disposed in the under-screen camera area 13, the transparent cathode layer 131 is formed on a substrate of the display substrate 1, and the transparent cathode layer 131 is electrically connected to a first power trace 14 of the first wiring area 11 and a first power trace 14 of the second wiring area 12 respectively. The first power trace 14 of the first routing area 11 may be used to provide a power source for the first routing area 11, and the first power trace 14 of the second routing area 12 may be used to provide a power source for the second routing area 12. As shown in fig. 3, the display area 10 further includes a pixel area 15, in fig. 3, 16 is a data trace, and 17 is a gate driving control trace.
Because the under-screen camera area 13 is formed by digging holes for the display area 10 in the prior art, the under-screen camera area 13 has no metal layer for power supply wiring, so that the power supply wiring of the display substrate 1 cannot directly penetrate through the under-screen camera area 13, and the wiring must be wound at the edge of the under-screen camera area 13. In the embodiment of the present invention, the first power traces 14 are respectively disposed in the first wire routing region 11 and the second wire routing region 12, and are electrically connected to the first power traces 14 of the first wire routing region 11 and the first power traces 14 of the second wire routing region 12 through the transparent cathode layer 131 in the under-screen camera region 13, so that the power signal of the display substrate 1 can directly pass through the under-screen camera region 13 without being implemented by winding the power traces around the edge of the under-screen camera region 13, and in this case, the increase in the number of the data traces of the display substrate 1 has no influence on the power trace line width and line spacing of the power traces in the first wire routing region 11 and the second wire routing region 12 and the area of the transparent cathode layer 131 in the under-screen camera region 13.
Therefore, the routing line width of the first power supply line 14 in the first routing area 11 and the first power supply line 14 in the second routing area 12 and the line distance between the first power supply line 14 and other routing lines can be ensured, the power supply line voltage drop, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem can be reduced, the voltage difference between the first power supply line 14 in the first routing area 11 and the first power supply line 14 in the second routing area 12 is only the voltage difference caused by the under-screen camera area 13, because the width of the under-screen camera area 13 is far greater than the line width of the power supply line, the voltage difference caused by the under-screen camera area 13 is far smaller than the voltage difference caused by the edge winding of the power supply line in the under-screen camera area 13, that is, the voltage difference between the first routing area 11 and the second routing area 12 is ensured to be small, and the display uniformity of the display panel using the display substrate 1 of the embodiment of the invention can be improved.
In addition, power routing does not need to be wound around the edge of the under-screen camera area 13, and only the gate drive control routing and the data routing are wound around the edge of the under-screen camera area 13, so that the black frame at the edge of the under-screen camera area 13 is further reduced, the light transmittance of the under-screen camera area 13 is improved, or the number of the data routing is increased to improve the resolution of the display panel to which the display substrate 1 is applied.
Optionally, the first power traces 14 of the first routing area 11 may be multiple, and the first power traces 14 of the second routing area 12 may be multiple, for example, as shown in fig. 3, the first routing area 11 includes two first power traces 14, and the second routing area 12 includes two first power traces 14.
Alternatively, as shown in fig. 4 and 5, the base may include the substrate 132, or the base may include the substrate 132 and other layers disposed on the substrate 132. Specifically, the substrate 132 may be a PI (Polyimide) substrate, a glass substrate, or a substrate formed of other transparent materials.
Optionally, a bonding layer may be disposed between the transparent cathode layer 131 and the first power trace 14, and the bonding layer is electrically connected to the transparent cathode layer 131 and the first power trace 14. Thereby realizing that the transparent cathode layer 131 is electrically connected with the first power trace 14, and the electrical signal in the first power trace 14 is transmitted through the transparent cathode layer 131.
Alternatively, as shown in fig. 4, the substrate near the first routing area 11 and the second routing area 12 in the under-screen camera area 13 may include: a substrate 132, an inorganic layer 133 and a first planarization layer 134 which are stacked on the substrate 132, the first planarization layer 134 being located between the inorganic layer 133 and the transparent cathode layer 131; as shown in fig. 4, the display substrate 1 of each of the first routing area 11 and the second routing area 12 may include: a substrate 132, an inorganic layer 133, a first power trace 14, a second planarization layer 135, and a pixel defining layer 136, which are stacked on the substrate 132; the bonding layer is a first anode layer 137 disposed between the first power trace 14 and the transparent cathode layer 131. Therefore, the first anode layer 137 is electrically connected with the transparent cathode layer 131 in the off-screen camera area 13 and the first power trace 14 of the first wiring area 11, and the first anode layer 137 is electrically connected with the transparent cathode layer 131 in the off-screen camera area 13 and the first power trace 14 of the second wiring area 12, that is, the power signal transmission paths of the first power trace 14 of the first wiring area 11, the first anode layer 137, the transparent cathode layer 131, the first anode layer 137 and the first power trace 14 of the second wiring area 12 are realized. Wherein the first planar layer 134 may be implemented to support the transparent cathode layer 131 in the sub-screen camera area 13. The pixel defining layer 136 and the first power trace 14 can implement a fixed first anode layer 137. The inorganic layer 133 may be an inorganic layer formed of a SiNx (silicon nitride) layer or a SiOx (silicon oxide) layer or other materials.
Optionally, as shown in fig. 4, in the under-screen camera area 13, the first power trace 14 extends into the under-screen camera area 13 toward the first flat layer 134, one end of the first anode layer 137 is located between the transparent cathode layer 131 and the first power trace 14, one end of the first anode layer 137 is electrically connected to the first power trace 14, and one end of the first anode layer 137 extends in a direction perpendicular to the substrate 132 and overlaps between the transparent cathode layer 131 and the first flat layer 134. Specifically, one end of the first anode layer 137 is overlapped on the first flat layer 134, and the transparent cathode layer 131 is located on the first flat layer 134 and the first anode layer 137. By overlapping one end of the first anode layer 137 on the first flat layer 134, the flatness of the first anode layer 137 can be ensured, and one end of the first anode layer 137 is reliably overlapped with the transparent cathode layer 131.
Optionally, as shown in fig. 4, in the first routing area 11, the first anode layer 137 and the second flat layer 135 are disposed on the same layer, the other end of the first anode layer 137 is located between the pixel defining layer 136 and the first power routing 14, and the other end of the first anode layer 137 extends in a direction perpendicular to the substrate 132 and overlaps between the pixel defining layer 136 and the second flat layer 135. By overlapping the other end of the first anode layer 137 between the pixel defining layer 136 and the second flat layer 135, it can be realized that the pixel defining layer 136 and the second flat layer 135 fix the other end of the first anode layer 137 in the process of producing the display substrate 1, and the first anode layer 137 is prevented from falling off in the process of producing the display substrate 1.
Optionally, the transparent cathode layer 131 of the sub-screen camera area 13 and the transparent cathode layer 131 outside the sub-screen camera area 13 are disposed on the same layer and have a distance greater than a preset safety distance, that is, the transparent cathode layer 131 of the sub-screen camera area 13 and the transparent cathode layer 131 outside the sub-screen camera area 13 have no connection relationship. Because the transparent cathode layer 131 of camera district 13 is walked 14 with first power and is connected under the screen, the transparent cathode layer 131 transmission power signal of camera district 13 under the screen, with the transparent cathode layer 131 of camera district 13 under the screen and the transparent cathode layer 131 outside camera district 13 under the screen with the layer setting and the interval be greater than predetermineeing safe interval, can make the transparent cathode layer 131 outside camera district 13 under the screen need not to transmit power signal, improve display substrate 1's security performance. Wherein, predetermine safe interval and can set up according to the minimum interval that can transmit the signal of telecommunication between the transparent cathode layer 131 of camera district 13 under the screen and the transparent cathode layer 131 outside camera district 13 under the screen. The preset safety distance is larger than the minimum distance.
Alternatively, as shown in fig. 4, the base of the under-screen camera area 13 away from the first and second routing areas 11 and 12 may include a substrate 132, and the transparent cathode layer 131 is formed on the substrate 132. Since the transparent cathode layer 131 in the sub-screen camera area 13 is formed on the substrate 132, the light transmittance of the sub-screen camera area 13 can be improved.
Specifically, since a safety space is provided between the transparent cathode layer 131 of the sub-screen camera area 13 and the transparent cathode layer of the pixel area 15, so as to achieve the insulation of the transparent cathode layer of the pixel area 15, the transparent cathode layer 131 of the sub-screen camera area 13 and the transparent cathode layer of the pixel area 15 are disposed on the same layer. As shown in fig. 5, 18 is a spacing region between the transparent cathode layer 131 of the under-screen camera area 13 and the transparent cathode layer of the pixel area 15, 138 is a second anode layer, the spacing region 18 may include the gate driving control trace 17 and the data trace 16, and the second anode layer 138 is disposed between the pixel defining layer 136 and the second flat layer 135. The second anode layer 138 is disposed on the same layer as the first anode layer 137.
The display substrate of the embodiment of the invention has the following advantages: and the first power supply wiring is arranged in the first wiring area and the second wiring area respectively and is electrically connected with the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area through a transparent cathode layer in the camera area under the screen. The power signal of the display substrate can directly penetrate through the camera area under the screen, the edge of the camera area under the screen is not required to be wound around a power line to achieve the purpose, and under the condition, the increase of the data line quantity of the display substrate has no influence on the power line width and the line distance of the power line in the first line area and the power line in the second line area and the area of the transparent cathode layer in the camera area under the screen. Therefore, the wiring line width of the first power supply wiring in the first wiring area and the wiring line width of the first power supply wiring in the second wiring area and the line distance between the first power supply wiring in the second wiring area and other wiring lines can be ensured, the voltage drop of the power supply wiring, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem are reduced, the pressure difference between the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area is only the pressure difference caused by the under-screen camera area, the width of the under-screen camera area is far larger than the line width of the power supply wiring, and the pressure difference caused by the under-screen camera area is far smaller than the pressure difference caused by the edge winding of the power supply wiring in the under-screen camera area, so that the power supply pressure difference between the first wiring area and the second wiring area is ensured to be small, and the display uniformity of a display panel using the. Because the power wiring does not need to be wound at the edge of the lower camera area of the screen, and only the grid drive control wiring and the data wiring are wound at the edge of the lower camera area of the screen, the black frame at the edge of the lower camera area of the screen is favorably further reduced, so that the light transmittance of the lower camera area of the screen is improved, or the number of the data wirings is increased to improve the resolution of the display panel applying the display substrate provided by the embodiment of the invention.
In addition, a transparent cathode layer in the camera area under the screen, a first power supply wire in the first wire area and a first power supply wire in the second wire area are arranged and are electrically connected through a first anode layer, one end of the first anode layer is overlapped between the transparent cathode layer and the first flat layer, and the other end of the first anode layer is overlapped between the pixel defining layer and the second flat layer. The power signal transmission path of the first power supply wiring in the first wiring area, the first anode layer, the transparent cathode layer, the first anode layer and the first power supply wiring in the second wiring area can be realized, so that the power signal can directly penetrate through the camera area under the screen, and the reliable lap joint of the first anode layer can be ensured.
In addition, the transparent cathode layer is formed on the substrate in the area where the under-screen camera is disposed, so that light transmittance of the under-screen camera can be improved.
The embodiment of the invention also discloses a display panel which comprises the display substrate.
The display panel according to an embodiment of the present invention may include an OLED (Organic Light-Emitting semiconductor) display panel or other display panels.
The display panel of the embodiment of the invention has the following advantages: and the first power supply wiring is arranged in the first wiring area and the second wiring area respectively and is electrically connected with the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area through a transparent cathode layer in the camera area under the screen. The power signal of the display substrate can directly penetrate through the camera area under the screen, the edge of the camera area under the screen is not required to be wound around a power line to achieve the purpose, and under the condition, the increase of the data line quantity of the display substrate has no influence on the power line width and the line distance of the power line in the first line area and the power line in the second line area and the area of the transparent cathode layer in the camera area under the screen. Therefore, the wiring line width of the first power supply wiring in the first wiring area and the wiring line width of the first power supply wiring in the second wiring area and the line distance between the first power supply wiring in the second wiring area and other wiring lines can be ensured, the voltage drop of the power supply wiring, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem are reduced, the pressure difference between the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area is only the pressure difference caused by the under-screen camera area, the width of the under-screen camera area is far larger than the line width of the power supply wiring, and the pressure difference caused by the under-screen camera area is far smaller than the pressure difference caused by the edge winding of the power supply wiring in the under-screen camera area, so that the power supply pressure difference between the first wiring area and the second wiring area is ensured to be small, and the display uniformity of a display panel using the. Because the power wiring does not need to be wound at the edge of the lower camera area of the screen, and only the grid drive control wiring and the data wiring are wound at the edge of the lower camera area of the screen, the black frame at the edge of the lower camera area of the screen is favorably further reduced, so that the light transmittance of the lower camera area of the screen is improved, or the number of the data wirings is increased to improve the resolution of the display panel applying the display substrate provided by the embodiment of the invention.
In addition, a transparent cathode layer in the camera area under the screen, a first power supply wire in the first wire area and a first power supply wire in the second wire area are arranged and are electrically connected through a first anode layer, one end of the first anode layer is overlapped between the transparent cathode layer and the first flat layer, and the other end of the first anode layer is overlapped between the pixel defining layer and the second flat layer. The power signal transmission path of the first power supply wiring in the first wiring area, the first anode layer, the transparent cathode layer, the first anode layer and the first power supply wiring in the second wiring area can be realized, so that the power signal can directly penetrate through the camera area under the screen, and the reliable lap joint of the first anode layer can be ensured.
In addition, the transparent cathode layer is formed on the substrate in the area where the under-screen camera is disposed, so that light transmittance of the under-screen camera can be improved.
The embodiment of the invention also discloses a display device which comprises the display panel.
The display device of the embodiment of the invention can be a television, a tablet computer, a notebook computer, a mobile phone and the like.
The display device of the embodiment of the invention has the following advantages: and the first power supply wiring is arranged in the first wiring area and the second wiring area respectively and is electrically connected with the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area through a transparent cathode layer in the camera area under the screen. The power signal of the display substrate can directly penetrate through the camera area under the screen, the edge of the camera area under the screen is not required to be wound around a power line to achieve the purpose, and under the condition, the increase of the data line quantity of the display substrate has no influence on the power line width and the line distance of the power line in the first line area and the power line in the second line area and the area of the transparent cathode layer in the camera area under the screen. Therefore, the wiring line width of the first power supply wiring in the first wiring area and the wiring line width of the first power supply wiring in the second wiring area and the line distance between the first power supply wiring in the second wiring area and other wiring lines can be ensured, the voltage drop of the power supply wiring, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem are reduced, the pressure difference between the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area is only the pressure difference caused by the under-screen camera area, the width of the under-screen camera area is far larger than the line width of the power supply wiring, and the pressure difference caused by the under-screen camera area is far smaller than the pressure difference caused by the edge winding of the power supply wiring in the under-screen camera area, so that the power supply pressure difference between the first wiring area and the second wiring area is ensured to be small, and the display uniformity of a display panel using the. Because the power wiring does not need to be wound at the edge of the lower camera area of the screen, and only the grid drive control wiring and the data wiring are wound at the edge of the lower camera area of the screen, the black frame at the edge of the lower camera area of the screen is favorably further reduced, so that the light transmittance of the lower camera area of the screen is improved, or the number of the data wirings is increased to improve the resolution of the display panel applying the display substrate provided by the embodiment of the invention.
In addition, a transparent cathode layer in the camera area under the screen, a first power supply wire in the first wire area and a first power supply wire in the second wire area are arranged and are electrically connected through a first anode layer, one end of the first anode layer is overlapped between the transparent cathode layer and the first flat layer, and the other end of the first anode layer is overlapped between the pixel defining layer and the second flat layer. The power signal transmission path of the first power supply wiring in the first wiring area, the first anode layer, the transparent cathode layer, the first anode layer and the first power supply wiring in the second wiring area can be realized, so that the power signal can directly penetrate through the camera area under the screen, and the reliable lap joint of the first anode layer can be ensured.
In addition, the transparent cathode layer is formed on the substrate in the area where the under-screen camera is disposed, so that light transmittance of the under-screen camera can be improved.
Referring to fig. 6, an embodiment of the present invention further discloses a method for manufacturing a display substrate, including:
In step 650, a pixel defining layer is formed on the overlapping layer of the first routing area and the second planarization layer.
In step 660, a transparent cathode layer may be formed on the overlapping layer and the first flat layer of the under-screen camera area by using a patterned mask evaporation process or an isolation pillar process. And the distance between the transparent cathode layer of the camera area under the screen and the transparent cathode layer outside the camera area under the screen is larger than the preset safety distance.
Through steps 610 to 660, the display substrate shown in fig. 4 may be formed.
Optionally, the landing layer may be a first anode layer disposed between the first power trace and the transparent cathode layer. Optionally, one end of the first anode layer is overlapped between the transparent cathode layer and the first flat layer, and the other end of the first anode layer is overlapped between the pixel defining layer and the second flat layer.
The preparation method of the display substrate provided by the embodiment of the invention has the following advantages: and the first power supply wiring is arranged in the first wiring area and the second wiring area respectively and is electrically connected with the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area through a transparent cathode layer in the camera area under the screen. The power signal of the display substrate can directly penetrate through the camera area under the screen, the edge of the camera area under the screen is not required to be wound around a power line to achieve the purpose, and under the condition, the increase of the data line quantity of the display substrate has no influence on the power line width and the line distance of the power line in the first line area and the power line in the second line area and the area of the transparent cathode layer in the camera area under the screen. Therefore, the wiring line width of the first power supply wiring in the first wiring area and the wiring line width of the first power supply wiring in the second wiring area and the line distance between the first power supply wiring in the second wiring area and other wiring lines can be ensured, the voltage drop of the power supply wiring, the open circuit problem, the short circuit problem and the line-to-line crosstalk problem are reduced, the pressure difference between the first power supply wiring in the first wiring area and the first power supply wiring in the second wiring area is only the pressure difference caused by the under-screen camera area, the width of the under-screen camera area is far larger than the line width of the power supply wiring, and the pressure difference caused by the under-screen camera area is far smaller than the pressure difference caused by the edge winding of the power supply wiring in the under-screen camera area, so that the power supply pressure difference between the first wiring area and the second wiring area is ensured to be small, and the display uniformity of a display panel using the. Because the power wiring does not need to be wound at the edge of the lower camera area of the screen, and only the grid drive control wiring and the data wiring are wound at the edge of the lower camera area of the screen, the black frame at the edge of the lower camera area of the screen is favorably further reduced, so that the light transmittance of the lower camera area of the screen is improved, or the number of the data wirings is increased to improve the resolution of the display panel applying the display substrate provided by the embodiment of the invention.
In addition, a transparent cathode layer in the camera area under the screen, a first power supply wire in the first wire area and a first power supply wire in the second wire area are arranged and are electrically connected through a first anode layer, one end of the first anode layer is overlapped between the transparent cathode layer and the first flat layer, and the other end of the first anode layer is overlapped between the pixel defining layer and the second flat layer. The power signal transmission path of the first power supply wiring in the first wiring area, the first anode layer, the transparent cathode layer, the first anode layer and the first power supply wiring in the second wiring area can be realized, so that the power signal can directly penetrate through the camera area under the screen, and the reliable lap joint of the first anode layer can be ensured.
In addition, the transparent cathode layer is formed on the substrate in the area where the under-screen camera is disposed, so that light transmittance of the under-screen camera can be improved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
For the display panel and the display device embodiment, since the display panel and the display device include the display substrate, the description is relatively simple, and for the relevant points, reference may be made to part of the description of the display substrate embodiment.
For the embodiment of the preparation method of the display substrate, the description is relatively simple because the embodiment corresponds to the structure of the display substrate, and the relevant points can be referred to the partial description of the embodiment of the display substrate.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The display substrate, the display panel, the display device and the method for manufacturing the display substrate provided by the invention are described in detail, and specific examples are applied to illustrate the principles and embodiments of the invention, and the description of the examples is only used to help understanding the method and the core concept of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a display substrate, its characterized in that is provided with first routing district, second routing district and camera district under the screen in display area of display substrate, camera district is located under the screen first routing district with between the second routing district, be provided with transparent cathode layer in the camera district under the screen, transparent cathode layer forms on display substrate's basement, transparent cathode layer walks the line electricity with the first power in first routing district and walks the first power in line district and is connected with the second routing district respectively and walk the line electricity.
2. The display substrate of claim 1, wherein a bonding layer is disposed between the transparent cathode layer and the first power trace, and the bonding layer is electrically connected to the transparent cathode layer and the first power trace.
3. The display substrate according to claim 2, wherein the base in the under-screen camera area near the first routing area and the second routing area comprises: a substrate, an inorganic layer and a first flat layer which are stacked and arranged on the substrate, wherein the first flat layer is positioned between the inorganic layer and the transparent cathode layer;
the display substrates of the first wiring area and the second wiring area both include: the substrate, the inorganic layer, the first power trace, the second planarization layer and the pixel defining layer are stacked on the substrate;
the overlapping layer is a first anode layer arranged between the first power supply wire and the transparent cathode layer.
4. The display substrate of claim 3, wherein in the under-screen camera area, the first power trace extends into the under-screen camera area toward the first planar layer, one end of the first anode layer is located between the transparent cathode layer and the first power trace, one end of the first anode layer is electrically connected to the first power trace, and one end of the first anode layer extends in a direction perpendicular to the substrate and overlaps between the transparent cathode layer and the first planar layer.
5. The display substrate according to claim 3, wherein in the first routing region, the first anode layer and the second planar layer are disposed on the same layer, another end of the first anode layer is located between the pixel defining layer and the first power trace, and another end of the first anode layer extends in a direction perpendicular to the substrate and overlaps between the pixel defining layer and the second planar layer.
6. The display substrate of claim 1, wherein the transparent cathode layer of the under-screen camera area and the transparent cathode layer outside the under-screen camera area are disposed on the same layer and have a distance greater than a preset safety distance.
7. The display substrate according to claim 1, wherein the base in the under-screen camera area away from the first and second routing areas comprises a substrate on which the transparent cathode layer is formed.
8. A display panel comprising the display substrate according to any one of claims 1 to 7.
9. A display device characterized by comprising the display panel according to claim 8.
10. A method for preparing a display substrate is characterized by comprising the following steps:
providing a substrate corresponding to a display area, wherein the substrate comprises a first wiring area, a second wiring area and a camera area under a screen, and the camera area under the screen is positioned between the first wiring area and the second wiring area;
forming an inorganic layer and a first power line on both the first wiring region and the second wiring region of the substrate;
forming the inorganic layer and a first flat layer on an under-screen camera area of the substrate close to the first wiring area and the second wiring area, and forming a second flat layer on the first power supply line;
forming a lap joint layer on the first power supply line between the first and second flat layers;
forming a pixel defining layer on the lapping layer of the first routing area and the second flat layer;
forming a transparent cathode layer on the lapping layer of the under-screen camera area and the first flat layer; the overlapping layer is electrically connected with the transparent cathode layer and the first power line respectively.
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