CN111785742A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN111785742A CN111785742A CN202010864238.4A CN202010864238A CN111785742A CN 111785742 A CN111785742 A CN 111785742A CN 202010864238 A CN202010864238 A CN 202010864238A CN 111785742 A CN111785742 A CN 111785742A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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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
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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
- H10K50/85—Arrangements for extracting light from the devices
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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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention provides a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display. The invention arranges an electrode connecting layer, a flat layer, an anode layer, a pixel defining layer, an organic functional layer and a cathode layer on a substrate of a functional display area in sequence, wherein the electrode connecting layer comprises a plurality of anode connecting wires and cathode connecting wires which are insulated from each other, the anode layer comprises a plurality of anodes which are spaced from each other, two adjacent anodes are connected with the anode connecting wires through first via holes which penetrate through the flat layer, the cathode layer comprises a plurality of cathodes which are spaced from each other, and two adjacent cathodes are connected with the cathode connecting wires through second via holes which penetrate through the pixel defining layer and the flat layer. The film number of the functional display area is less, so that the transmittance of light can be improved, the wiring number of the functional display area is less, and the anode and the cathode are distributed at intervals, so that the light transmission area of the functional display area can be increased, the diffraction coherent superposition phenomenon is reduced, the normal use of functional devices is ensured, and full-screen display is realized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
With the continuous development of display technology, in order to enable users to have better visual experience, the overall screen design of a display device has become a trend, and is favored by more users.
Among the present display device, owing to need set up functional device such as camera, sensor, often need cut in display device and form the holding tank to place functional device, design such as bang screen, water droplet screen among the current display device.
However, the current display device needs to form a receiving groove for placing the functional device, and the receiving groove occupies a part of the screen, so that the screen occupation ratio of the current display device cannot reach 100%, and a full screen cannot be realized in a true sense.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof and a display device, and aims to solve the problem that a full screen cannot be truly realized due to the fact that an accommodating groove is required to be formed in the conventional display device for accommodating functional devices.
In order to solve the above problems, the present invention discloses a display panel including:
a substrate; the substrate is divided into an effective display area and a functional display area where a functional device is located;
an electrode connection layer disposed on the substrate of the functional display region; the electrode connecting layer comprises a plurality of anode connecting wires and a plurality of cathode connecting wires which are insulated from each other, the anode connecting wires are distributed along a first direction, and the cathode connecting wires are distributed along a second direction;
a planarization layer covering the substrate and the electrode connection layer;
an anode layer disposed on the flat layer of the functional display region; the anode layer comprises a plurality of anodes which are spaced from each other, and along the first direction, two adjacent anodes are connected with the anode connecting line through first via holes which penetrate through the flat layer;
a pixel defining layer and an organic functional layer disposed on the anode layer;
a cathode layer disposed in the functional display region and covering the organic functional layer; the cathode layer comprises a plurality of cathodes which are spaced from each other, and along the second direction, two adjacent cathodes are connected with the cathode connecting line through a second via hole which penetrates through the pixel defining layer and the flat layer.
Optionally, the orthographic projection of the cathode on the substrate covers the orthographic projection of the anode on the substrate.
Optionally, the electrode connection layer is made of a transparent conductive material, and the thickness of the electrode connection layer is
To
Optionally, the display panel further includes an encapsulation layer covering the cathode layer and the pixel defining layer, and a color film layer disposed on the encapsulation layer;
the color film layer comprises color film units corresponding to the anodes, and each color film unit comprises a color resistance unit and a black matrix surrounding the color resistance unit.
Optionally, the pixel defining layer has a plurality of pixel openings, and an orthographic projection of the color resistance unit on the substrate covers an orthographic projection of the organic functional layer on the substrate in the corresponding pixel opening;
wherein each color resistance unit allows light to pass through the same color as the color of the light emitted by the organic functional layer in the corresponding pixel opening.
Optionally, the orthographic projection of the color film unit on the substrate covers the orthographic projection of the cathode on the substrate, and an overlapping region exists between the orthographic projection of the black matrix on the substrate and the orthographic projection of the cathode on the substrate.
Optionally, the display panel further includes a protective layer covering the encapsulation layer and the color film layer.
In order to solve the above problem, the present invention also discloses a method for manufacturing a display panel, comprising:
providing a substrate; the substrate is divided into an effective display area and a functional display area where a functional device is located;
forming an electrode connection layer on the substrate of the functional display region; the electrode connecting layer comprises a plurality of anode connecting wires and a plurality of cathode connecting wires which are insulated from each other, the anode connecting wires are distributed along a first direction, and the cathode connecting wires are distributed along a second direction;
forming a planarization layer covering the substrate and the electrode connection layer;
forming an anode layer on the planarization layer of the functional display region; the anode layer comprises a plurality of anodes which are spaced from each other, and along the first direction, two adjacent anodes are connected with the anode connecting line through first via holes which penetrate through the flat layer;
forming a pixel defining layer and an organic functional layer on the anode layer, respectively;
forming a cathode layer covering the organic functional layer in the functional display region; the cathode layer comprises a plurality of cathodes which are spaced from each other, and along the second direction, two adjacent cathodes are connected with the cathode connecting line through a second via hole which penetrates through the pixel defining layer and the flat layer.
Optionally, after the step of forming a cathode layer covering the organic functional layer in the functional display area, the method further includes:
forming an encapsulation layer covering the cathode layer and the pixel defining layer;
forming a color film layer on the packaging layer;
the color film layer comprises color film units corresponding to the anodes, and each color film unit comprises a color resistance unit and a black matrix surrounding the color resistance unit.
Optionally, after the step of forming the color film layer on the encapsulation layer, the method further includes:
and forming a protective layer covering the packaging layer and the color film layer.
In order to solve the above problems, the present invention also discloses a display device, comprising a functional device and the above display panel;
the functional device is arranged on one side of the substrate, which is far away from the electrode connecting layer, and the functional device is positioned in the functional display area.
Compared with the prior art, the invention has the following advantages:
in the embodiment of the invention, an electrode connecting layer, a flat layer, an anode layer, a pixel defining layer, an organic functional layer and a cathode layer are sequentially arranged on a substrate of a functional display area, wherein the electrode connecting layer comprises a plurality of anode connecting lines and cathode connecting lines which are insulated from each other, the anode connecting lines are distributed along a first direction, the cathode connecting lines are distributed along a second direction, the anode layer comprises a plurality of anodes which are spaced from each other, two adjacent anodes are connected with the anode connecting lines through first through holes penetrating through the flat layer along the first direction, the cathode layer comprises a plurality of cathodes which are spaced from each other, and two adjacent cathodes are connected with the cathode connecting lines through second through holes penetrating through the pixel defining layer and the flat layer along the second direction. The normal display function of the display panel of the functional display area is realized by sequentially arranging an electrode connecting layer, a flat layer, an anode layer, a pixel defining layer, an organic functional layer and a cathode layer in the functional display area of the functional device; simultaneously, because the rete number in function display area is less, then can improve the transmissivity of light, because the line quantity of walking in function display area is less, and positive pole and the equal interval distribution of negative pole, then can increase the effective light-transmitting area in function display area to reduce the coherent stack phenomenon of diffraction, with the normal performance of guaranteeing the function device, consequently, need not to set up the holding tank and place the function device, just can realize real comprehensive screen display when guaranteeing the normal use of function device.
Drawings
FIG. 1 shows a schematic diagram of a display panel of an embodiment of the invention;
fig. 2 is a plan view showing a functional display area in the display panel according to the embodiment of the present invention;
FIG. 3 shows a cross-sectional view of the display panel shown in FIG. 2 along section A-A';
FIG. 4 shows a cross-sectional view of the display panel shown in FIG. 2 along section B-B';
FIG. 5 shows a cross-sectional view of another display panel of an embodiment of the invention;
FIG. 6 is a flow chart of a method of fabricating a display panel according to an embodiment of the invention;
FIG. 7 is a plan view showing a structure of an electrode connection layer formed on a substrate according to an embodiment of the present invention;
FIG. 8 is a plan view of an embodiment of the present invention after forming an anode layer and an organic functional layer;
fig. 9 is a plan view of the package layer and the color film layer after the package layer and the color film layer are formed according to the embodiment of the 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.
In the correlation technique, can directly set up the functional device in the opposite side of the light-emitting side of display panel, and need not cut display panel and form the holding tank in order to place the functional device to realize full screen display.
However, the existing display panel is an AMOLED (Active Matrix Organic Light emitting diode) display panel, a pixel driving circuit is disposed in a functional display area where a functional device is located, the pixel driving circuit generally needs to include a gate layer and a source/drain electrode layer, and in addition, a flat layer, an anode layer, a pixel defining layer, an Organic functional layer, a cathode layer, and other film layers are also needed to be disposed in the display panel, and the number of the film layers is large, which results in a low transmittance of Light in the functional display area where the functional device is located; and, because pixel drive circuit's the line quantity of walking is more, the grid layer includes grid line, reset signal line and luminous control signal line etc. promptly, and source drain electrode layer includes data line and VDD signal line etc. can lead to the effective light-transmitting area in the function display area at function device place less, then when outside light passes from the display panel who is located function display area, it can take place the diffraction phenomenon easily, and each diffraction light after the diffraction can take place coherent stack more easily and produce the light that has light and dark stripe. Because the transmittance of the light in the functional display area is low, the light intensity of the external light which passes through the display panel and enters the functional device is also low, and the generated light with the light and dark stripes can enter the functional device, so that the functional device can not be normally used.
For example, if the functional device is a camera, the light intensity of the external light entering the camera through the display panel is low, and the generated light with light and dark stripes also enters the camera, so that the imaging quality of the camera is poor, and the normal use of the user is affected.
In the embodiment of the present invention, the electrode connection layer, the planarization layer, the anode layer, the pixel defining layer, the organic functional layer and the cathode layer are sequentially disposed on the substrate of the functional display area, that is, a PMOLED (Passive organic Light Emitting Diode) display panel is formed in the functional display area, and it is not necessary to dispose a pixel driving circuit, and only one electrode connection layer needs to be added, so that the number of film layers is small, and the transmittance of Light in the functional display area where the functional device is located can be improved; and, only set up the line of walking of electrode connecting layer in the display panel of function display area for the line quantity of walking of function display area is less, and positive pole and the equal interval distribution of negative pole, then can increase the effective printing opacity area in function display area, and external light is difficult to take place the diffraction phenomenon when passing from the display panel who is located function display area, and then has weakened the coherent stack of each diffraction light, has alleviateed the light and shade stripe that the coherent stack of diffraction produced. Because the transmittance of the light in the functional display area is high, the light intensity of the external light which passes through the display panel and enters the functional device is also high, and after the light with weak light and dark stripes generated by diffraction coherent superposition enters the functional device, the normal use of the functional device is not influenced too much. Therefore, the embodiment of the invention can realize real comprehensive screen display while ensuring the normal use of the functional device.
Example one
Referring to fig. 1, a schematic diagram of a display panel according to an embodiment of the present invention is shown, fig. 2 is a plan view of a functional display region in the display panel according to the embodiment of the present invention, fig. 3 is a cross-sectional view of the display panel shown in fig. 2 taken along a section a-a ', and fig. 4 is a cross-sectional view of the display panel shown in fig. 2 taken along a section B-B'.
An embodiment of the present invention provides a display panel, including: a substrate 21, the substrate 21 being divided into an effective display area 10 and a functional display area 20 in which a functional device 30 is located; an electrode connection layer 22 disposed on the substrate 21 of the functional display region 20, the electrode connection layer 22 including a plurality of anode connection lines 221 and cathode connection lines 222 insulated from each other, the anode connection lines 221 being distributed along a first direction, and the cathode connection lines 222 being distributed along a second direction; a planarization layer 23 covering the substrate 21 and the electrode connection layer 22; an anode layer 24 disposed on the flat layer 23 of the functional display area 20, wherein the anode layer 24 includes a plurality of anodes 241 spaced apart from each other, and along a first direction, two adjacent anodes 241 are connected to the anode connection line 221 through a first via hole penetrating the flat layer 23; a pixel defining layer 25 and an organic functional layer 26 disposed on the anode layer 24; a cathode layer 27 disposed on the functional display region 20 and covered with the functional layer 26, the cathode layer 27 including a plurality of cathodes 271 spaced apart from each other, and along the second direction, two adjacent cathodes 271 are connected to the cathode connection line 222 through a second via penetrating the pixel defining layer 25 and the flat layer 23.
Specifically, the substrate 21 is divided into the effective display area 10 and the functional display area 20, and the area provided with the functional device 30 is the functional display area 20, and the area not provided with the functional device 30 is the effective display area 10.
In an actual product, the substrate 21 located in the functional display area 20 includes a substrate 211 and an inorganic film layer 212 disposed on the substrate 211, where the inorganic film layer 212 includes an interlayer dielectric layer and a passivation layer; the substrate 21 located in the effective display area 10 actually includes a base plate 211 and a driving function layer provided on the base plate 211, the driving function layer being a pixel driving circuit that drives the light emitting device located in the effective display area 10. The pixel driving circuit comprises an active layer arranged on a substrate 211, a gate insulating layer covering the substrate 211 and the active layer, a gate layer arranged on the gate insulating layer, an interlayer dielectric layer covering the gate layer and the gate insulating layer, and a source drain electrode layer arranged on the interlayer dielectric layer, wherein the source drain electrode layer is connected with the active layer through a via hole structure penetrating through the interlayer dielectric layer and the gate insulating layer. Therefore, when forming the driving function layer of the effective display region 10, the interlayer dielectric layer and the passivation layer extend to the functional display region 20, that is, all regions of the substrate 21 are provided with the interlayer dielectric layer and the passivation layer, and only the effective display region 10 of the substrate 21 is provided with the active layer, the gate insulating layer, the gate layer and the source/drain electrode layer.
An electrode connection layer 22, a planarization layer 23, an anode layer 24, a pixel defining layer 25, an organic functional layer 26, and a cathode layer 27 are sequentially disposed on a substrate 21 located in the functional display region 20.
The electrode connection layer 22 includes a plurality of anode connection lines 221 distributed along the first direction and a plurality of cathode connection lines 222 distributed along the second direction, that is, the anode connection lines 221 and the cathode connection lines 222 are disposed on the same layer on the substrate 21, and there is no overlapping area between the orthographic projection of the anode connection lines 221 on the substrate 21 and the orthographic projection of the cathode connection lines 222 on the substrate 21, so that each anode connection line 221 and each cathode connection line 222 are insulated from each other.
It should be noted that each cathode connection line 222 distributed along the second direction is a whole complete trace, the middle of which is not interrupted, and each anode connection line 221 distributed along the first direction is disconnected at the position of each cathode connection line 222, that is, each anode connection line 221 can be regarded as being divided into a plurality of anode connection portions, two adjacent anode connection portions are disconnected, and the position between two adjacent anode connection portions is the position of the cathode connection line 222.
As shown in fig. 2, the first direction is a column direction of the display panel, and the second direction is a row direction of the display panel; of course, the first direction may be a row direction of the display panel, and the second direction may be a column direction of the display panel.
The display panel further includes a planarization layer 23 covering the substrate 21 and the electrode connection layer 22. The planarization layer 23 may cover only the substrate 21 and the electrode connection layer 22 located in the functional display region 20, in which case the planarization layer 23 is located only in the functional display region 20; the planarization layer 23 may also cover the electrode connection layer 22 and the substrate 21 located in the effective display region 10 and the functional display region 20, in which case the planarization layer 23 is located in the effective display region 10 and the functional display region 20. The material of the planarization layer 23 may be an organic material, such as resin or the like.
The display panel further includes an anode layer 24 disposed on the flat layer 23 of the functional display area 20, and the anode layer 24 includes a plurality of anodes 241 spaced apart from each other and arranged in an array, that is, two adjacent anodes 241 are spaced apart by a certain distance. And, along the first direction, two adjacent anodes 241 are connected with the anode connecting lines 221 through the first via holes penetrating the planarization layer 23, that is, when the first direction is a column direction of the display panel, the anodes 241 of one column may be connected together by each anode connecting line 221, and when the first direction is a row direction of the display panel, the anodes 241 of one row may be connected together by each anode connecting line 221.
The anode 241 may have a stacked structure of ITO (Indium Tin oxide)/Ag (silver)/ITO, and the shape of the anode 241 may be a closed shape such as a rectangle, a trapezoid, or a diamond, which is not limited in the present invention.
In forming the anode layer 24 in the functional display region 20, the anode layer in the active display region 10 may be formed simultaneously by the same patterning process.
The display panel further comprises a pixel defining layer 25 and an organic functional layer 26 disposed on the anode layer 24 of the functional display area 20. Specifically, the pixel defining layer 25 is disposed in the functional display region 20 and covers the planarization layer 23 and a portion of the anode layer 24, and the pixel defining layer 25 has a plurality of pixel openings; an organic functional layer 26 is disposed on the pixel defining layer 25 and within the pixel opening.
The organic functional layer 26 may include only a light emitting layer, and the organic functional layer 26 may also include film layers such as a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
In an actual product, the number of the organic functional layer 26 is large, and a part of the organic functional layer is only disposed in the pixel opening, and another part of the organic functional layer is not only disposed in the pixel opening but also disposed on the pixel defining layer 25.
It should be noted that, when the pixel defining layer 25 located in the functional display region 20 is formed, the same process may be used to simultaneously form the pixel defining layer located in the effective display region 10; when the organic functional layer 26 located in the functional display region 20 is formed, the organic functional layer located in the effective display region 10 may be simultaneously formed by the same process.
The display panel further includes a cathode layer 27 disposed in the functional display region 20 and covered with the functional layer 26, wherein the cathode layer 27 includes a plurality of cathodes 271 spaced apart from each other and arranged in an array, that is, two adjacent cathodes 271 are spaced apart by a certain distance. And, along the second direction, two adjacent cathodes 271 are connected with the cathode connecting line 222 through a second via hole penetrating the pixel defining layer 25 and the planarization layer 23, that is, when the second direction is a row direction of the display panel, the cathodes 271 of one row may be connected together by each cathode connecting line 222, and when the second direction is a column direction of the display panel, the cathodes 271 of one column may be connected together by each cathode connecting line 222.
The material of the cathode 271 may be at least one of Mg (magnesium), Ag and Al (aluminum), and the shape of the cathode 271 may be a closed shape such as a rectangle, a trapezoid, a rhombus, etc., which is not limited in the present invention.
When the cathode layer 27 is formed in the functional display region 20, the cathode layer in the effective display region 10 may be formed at the same time.
In the actual driving process, for the display panel located in the functional display area 20 as shown in fig. 2, the anode connecting lines 221 are distributed along the column direction of the display panel, the cathode connecting lines 222 are distributed along the row direction of the display panel, if it is required to drive the sub-pixels of the mth row and the nth column therein to emit light, the first voltage signal is input to the anode connecting line 221 of the nth column, and the second voltage signal is input to the cathode connecting line 222 of the mth row, all the anodes 241 of the nth column can receive the first voltage signal, all the cathodes 271 of the mth row can receive the second voltage signal, therefore, only the organic functional layer 26 located between the anode 241 and the cathode 271 located at the nth column position of the mth row can receive the first voltage signal and the second voltage signal at the same time, and under the control of the first voltage signal and the second voltage signal, the organic functional layer 26 located at the nth column position of the mth row can be controlled to emit light, that is, the sub-pixels in the mth row and the nth column are driven to emit light, and the organic functional layers 26 at the rest positions only receive the first voltage signal or the second voltage signal, or do not receive any voltage signal, so that the organic functional layers 26 at the rest positions cannot emit light. Based on the above principle, by inputting different voltage signals to the corresponding anode connection line 221 and cathode connection line 222, each sub-pixel in the display panel of the functional display area 20 can be controlled to emit light, thereby implementing the normal display function of the display panel where the functional display area 20 is located. Wherein M and N are both positive integers greater than 0.
In summary, the display panel located in the functional display area 20 includes: the organic light-emitting diode comprises a substrate 211, an inorganic film layer 212, an electrode connecting layer 22, a flat layer 23, an anode layer 24, a pixel defining layer 25, an organic functional layer 26 and a cathode layer 27, wherein the inorganic film layer 212 comprises an interlayer dielectric layer and a passivation layer; and the display panel positioned in the effective display area 10 includes: the organic light-emitting diode comprises a substrate 211, a driving functional layer, a flat layer, an anode layer, a pixel defining layer, an organic functional layer and a cathode layer, wherein the driving functional layer comprises an active layer, a gate insulating layer, a gate layer, an interlayer dielectric layer, a source drain electrode layer and a passivation layer.
For the substrate 21 located in the functional display area 20, the electrode connection layer 22, the flat layer 23, the anode layer 24, the pixel defining layer 25, the organic functional layer 26 and the cathode layer 27 are sequentially arranged on the substrate 21, and the substrate 21, the electrode connection layer 22, the flat layer 23, the anode layer 24, the pixel defining layer 25, the organic functional layer 26 and the cathode layer 27 are sequentially arranged in the functional display area 20 where the functional device 30 is located, so that the normal display function of the display panel where the functional display area 20 is located is realized.
Meanwhile, since the number of the film layers in the functional display area 20 is small, that is, only the substrate 211, the interlayer dielectric layer, the passivation layer, the electrode connection layer 22, the planarization layer 23, the anode layer 24, the pixel defining layer 25, the organic functional layer 26 and the cathode layer 27 are provided, the transmittance of light can be improved; since the number of the traces in the functional display area 20 is small, that is, only the anode connecting line 221 and the cathode connecting line 222 included in the electrode connecting layer 22 are provided, and the anode 241 and the cathode 271 are both distributed at intervals, the effective light-transmitting area of the functional display area 20 can be increased, so as to reduce the diffraction coherent superposition phenomenon, and ensure the normal use performance of the functional device 30. Therefore, the functional device 30 is placed without arranging an accommodating groove, and the real comprehensive screen display can be realized while the normal use of the functional device 30 is ensured.
In the embodiment of the present invention, the material of the electrode connecting layer 22 is a transparent conductive material, and specifically may be ITO or IZO (Indium Zinc Oxide), and the thickness of the electrode connecting layer 22 is as follows
To
By adopting the transparent conductive material to manufacture the electrode connecting layer 22, the transmittance of the electrode connecting layer 22 is relatively high, so that the external light passes through the electrode connecting layer 22 of the functional display area 20, the light intensity of the external light is not excessively influenced by the electrode connecting layer 22, and the transmittance of the light of the display panel where the functional display area 20 is located is further improved.
In an actual product, when forming the source-drain electrode layer located in the effective display area 10, in addition to the routing required for manufacturing the pixel driving circuit, first SD connecting lines and second SD connecting lines need to be additionally manufactured, the number of the first SD connecting lines is equal to that of the anode connecting lines 221, the number of the second SD connecting lines is equal to that of the cathode connecting lines 222, and the first SD connecting lines and the second SD connecting lines are both used for being connected with a subsequent bound driving chip. The anode connection line 221 is connected to the first SD connection line through a first connection hole penetrating the passivation layer to be connected to the driving chip through the first SD connection line, and the cathode connection line 222 needs to be connected to the second SD connection line through a second connection hole penetrating the passivation layer to be connected to the driving chip through the second SD connection line, so that the driving chip can provide a first voltage signal to the anode connection line 221 through the first SD connection line and provide a second voltage signal to the cathode connection line 222 through the second SD connection line to control each sub-pixel in the display panel where the functional display region 20 is located to emit light.
The materials of the first SD connecting line and the second SD connecting line are the same as those of the source/drain electrode layer, and both adopt a Ti/Al/Ti laminated structure, while the materials of the anode connecting line 221 and the cathode connecting line 222 are ITO or IZO. When the anode connection line 221 and the cathode connection line 222 are made of ITO or IZO, the wiring resistance is larger, and the wiring resistance of the first SD connection line and the second SD connection line is smaller. Therefore, the anode connecting line 221 is connected to the driving chip through the first SD connecting line, and the cathode connecting line 222 is connected to the driving chip through the second SD connecting line, so that the wiring resistance can be reduced.
In the implementation of the present invention, the orthographic projection of the cathode 271 on the substrate 21 covers the orthographic projection of the anode 241 on the substrate 21 for the display panel on which the functional display area 20 is located.
By covering the orthographic projection of the cathode 271 on the substrate 21 with the orthographic projection of the anode 241 on the substrate 21, it is ensured that two adjacent cathodes 271 can be connected with the cathode connection line 222 through the second via hole penetrating the pixel defining layer 25 and the flat layer 23, and the occupied area of the anode 241 and the cathode 271 in the functional display area 20 can be reduced, thereby increasing the effective light transmission area of the functional display area 20.
In addition, in an actual manufacturing process, a PPI (pixel density) of the display panel where the functional display region 20 is located may be designed to be smaller than that of the display panel where the effective display region 10 is located, so as to further increase an effective light-transmitting area of the functional display region 20.
In the embodiment of the present invention, as shown in fig. 5, the display panel further includes an encapsulation layer 28 covering the cathode layer 27 and the pixel defining layer 25, and a color film layer 29 disposed on the encapsulation layer 28; the color film layer 29 includes color film units 291 corresponding to the anodes 241, and each color film unit 291 includes a color resistor unit 2911 and a black matrix 2912 surrounding the color resistor unit 2911.
The encapsulation layer 28 includes a first inorganic encapsulation layer 281, an organic encapsulation layer 282, and a second inorganic encapsulation layer 283, wherein the first inorganic encapsulation layer 281 covers the cathode layer 27 and the pixel defining layer 25, the organic encapsulation layer 282 is disposed on the first inorganic encapsulation layer 281, and the second inorganic encapsulation layer 283 is disposed on the organic encapsulation layer 282. Of course, the encapsulation layer 28 may also include only an organic encapsulation layer or an inorganic encapsulation layer, and the specific number of the organic encapsulation layer and the inorganic encapsulation layer may be one layer or multiple layers, which is not limited in this embodiment of the present invention.
In addition, a color film layer 29 is further disposed on one side of the encapsulation layer 28, which is away from the cathode layer 27, the color film layer 29 includes a color film unit 291 corresponding to each anode 241, that is, each anode 241 and each cathode 271 correspond to one color film unit 291, and two adjacent color film units 291 are disposed at intervals; each color film unit 291 includes a color resistance unit 2911 and a black matrix 2912 surrounding the color resistance unit 2911.
The encapsulating layer 28 covers not only the cathode layer 27 and the pixel defining layer 25 in the functional display region 20 but also film layers such as a cathode layer in the effective display region 10; the color film layer 29 may be provided only in the functional display area 20, or the color film layer 29 may be provided in both the functional display area 20 and the effective display area 10.
In an existing display panel, a polarizer is usually disposed on an encapsulation layer to improve a color gamut of the display panel, but the thickness of the polarizer is large, which results in an increase in the thickness of the entire display panel, and the color gamut improvement effect of the polarizer is poor. In the embodiment of the invention, the color film layer 29 is arranged on the side of the packaging layer 28 away from the cathode layer 27, and the color film layer 29 is used to replace the polarizer, so that the color gamut improving effect of the color film layer 29 is better, because the thickness of the color film layer 29 is smaller than that of the polarizer, the thickness of the whole display panel can be reduced, and when the thickness of the display panel is reduced, the transmittance of the display panel can be improved, thereby improving the brightness of the display panel during display.
Further, the pixel defining layer 25 has a plurality of pixel openings, and the orthographic projection of the color resistance unit 2911 on the substrate 21 covers the orthographic projection of the organic functional layer 26 in the corresponding pixel opening on the substrate 21; the color of light allowed to pass through each color resistance unit 2911 is the same as the color of light emitted from the organic functional layer 26 in the corresponding pixel opening.
By covering the orthographic projection of the color resistance unit 2911 on the substrate 21 with the orthographic projection of the organic functional layer 26 in the corresponding pixel opening on the substrate 21, all light rays emitted by the organic functional layer 26 in each pixel opening can be filtered by the color resistance unit 2911; moreover, when the color of light allowed to pass through each color resistance unit 2911 is the same as the color of light emitted by the organic functional layer 26 in the corresponding pixel opening, the color resistance units 2911 may filter the light emitted by the organic functional layer 26 in each pixel opening, thereby improving the color gamut of the display panel and improving the display effect of the display panel.
For example, in three pixel openings adjacent to each other in the first direction or the second direction, the materials of the organic functional layer 26 in the pixel openings respectively include a red light emitting material, a green light emitting material, and a blue light emitting material, and the colors of the light emitted correspondingly are red, green, and blue, respectively, the color resistance unit 2911 corresponding to the organic functional layer 26 including the red light emitting material is a red color resistance unit, the color resistance unit 2911 corresponding to the organic functional layer 26 including the green light emitting material is a green color resistance unit, the color resistance unit 2911 corresponding to the organic functional layer 26 including the blue light emitting material is a blue color resistance unit, the red color resistance unit allows only red light, the green color resistance unit allows only green light, and the blue color resistance unit allows only blue light.
Further, the orthographic projection of the color film unit 291 on the substrate 21 covers the orthographic projection of the cathode 271 on the substrate 21, and there is an overlapping region between the orthographic projection of the black matrix 2912 on the substrate 21 and the orthographic projection of the cathode 271 on the substrate 21.
That is, the black matrix 2912 covers the edge of each cathode 271, and the black matrix 2912 covers the edge of the cathode 271, so as to prevent light from being irradiated onto the cathode 271 to generate reflection, that is, the reflectivity of the display panel can be reduced by the black matrix 2912; in addition, since the black matrix 2912 surrounds the color resistance unit 2911, that is, the black matrix 2912 is provided only once around the color resistance unit 2911, and the area occupied by the black matrix 2912 is small, the reflectance of the black matrix 2912 is reduced, and the transmittance of the display panel is not affected.
In the embodiment of the present invention, as shown in fig. 5, the display panel further includes a protective layer 31 covering the encapsulation layer 28 and the color film layer 29.
The material of the protective layer 31 may be an organic material, and is used to protect a film structure under the protective layer 31, that is, to protect the package layer 28, the color film layer 29, the cathode layer 27, the organic functional layer 26, and other film layers.
The protective layer 31 may be located only in the functional display region 20, or may be located in the functional display region 20 and the effective display region 10.
In the embodiment of the invention, the electrode connecting layer, the flat layer, the anode layer, the pixel defining layer, the organic functional layer and the cathode layer are sequentially arranged in the functional display area where the functional device is positioned, so that the normal display function of the display panel where the functional display area is positioned is realized; simultaneously, because the rete number in function display area is less, then can improve the transmissivity of light, because the line quantity of walking in function display area is less, and positive pole and the equal interval distribution of negative pole, then can increase the effective light-transmitting area in function display area to reduce the coherent stack phenomenon of diffraction, with the normal performance of guaranteeing the function device, consequently, need not to set up the holding tank and place the function device, just can realize real comprehensive screen display when guaranteeing the normal use of function device.
Example two
Referring to fig. 6, a flowchart illustrating a manufacturing method of a display panel according to an embodiment of the present invention is shown, which may specifically include the following steps:
In the embodiment of the present invention, first, a substrate 21 is manufactured, and the substrate 21 is divided into an effective display area 10 and a functional display area 20 where a functional device 30 is located.
Specifically, an active layer, a gate insulating layer and a gate electrode layer are respectively formed on the effective display region 10 of the substrate 211, then interlayer dielectric layers are formed on the effective display region 10 and the functional display region 20, then a source drain electrode layer is formed on the interlayer dielectric layer of the effective display region 10, the source drain electrode layer is connected with the active layer through a via hole structure penetrating through the interlayer dielectric layers and the gate insulating layer, and finally, passivation layers are formed on the effective display region 10 and the functional display region 20, so that the substrate 21 is obtained.
Accordingly, the substrate 21 of the effective display region 10 includes the base plate 211, the active layer, the gate insulating layer, the gate layer, the interlayer dielectric layer, the source and drain electrode layers, and the passivation layer, and the substrate 21 of the functional display region 20 includes the base plate 211, the interlayer dielectric layer, and the passivation layer.
In the embodiment of the present invention, as shown in fig. 7, after the substrate 21 is fabricated, the electrode connection layer 22 is formed on the substrate 21 of the functional display region 20. Specifically, a layer of electrode connection layer thin film is deposited on the substrate 21, photoresist is coated on the electrode connection layer thin film, the photoresist is exposed by using a mask plate, development is performed after exposure to obtain a photoresist removal region and a photoresist retention region, the electrode connection layer thin film at the photoresist removal region is etched, and finally the remaining photoresist at the photoresist retention region is removed, so that the electrode connection layer 22 is formed.
The electrode connection layer 22 includes a plurality of anode connection lines 221 distributed along a first direction and a plurality of cathode connection lines 222 distributed along a second direction, and each anode connection line 221 and each cathode connection line 222 are insulated from each other. The electrode connecting layer 22 is made of transparent conductive material, specifically ITO or IZO, and the thickness of the electrode connecting layer 22 is
To
In the embodiment of the present invention, after the electrode connection layer 22 is formed on the substrate 21 of the functional display region 20, the planarization layer 23 covering the substrate 21 and the electrode connection layer 22 needs to be formed. The planarization layer 23 may be located only in the functional display area 20, or may be located in the effective display area 10 and the functional display area 20.
Wherein the planarization layer 23 has a first via hole therethrough. Specifically, first, a flat layer 23 covering the substrate 21 and the electrode connection layer 22 is formed by a coating process, and then, the flat layer 23 is exposed by a mask plate and developed after exposure to form a first via hole penetrating the flat layer 23.
In the embodiment of the present invention, as shown in fig. 8, after the planarization layer 23 covering the substrate 21 and the electrode connection layer 22 is formed, the anode layer 24 is formed on the planarization layer 23 of the functional display region 20 by using a patterning process. The composition process specifically comprises the processes of film deposition, photoresist coating, exposure, development, etching, photoresist removal and the like.
The anode layer 24 includes a plurality of anodes 241 spaced apart from each other and arranged in an array, and along the first direction, two adjacent anodes 241 are connected to the anode connection line 221 through first via holes penetrating through the planarization layer 23.
At step 605, a pixel defining layer and an organic functional layer are formed on the anode layer, respectively.
In the embodiment of the present invention, after the anode layer 24 is formed on the flat layer 23 of the functional display area 20, the pixel defining layer 25 covering the flat layer 23 and a part of the anode layer 24 is formed in the functional display area 20, the pixel defining layer 25 has a plurality of pixel openings, and then, as shown in fig. 8, the organic functional layer 26 is formed on the pixel defining layer 25 and in the pixel openings of the functional display area 20, and the organic functional layer 26 may be formed by an evaporation process or a printing process.
The organic functional layer 26 may include only a light emitting layer, and the organic functional layer 26 may also include film layers such as a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
In the embodiment of the present invention, after the pixel defining layer 25 and the organic functional layer 26 are formed on the anode layer 24, a laser drilling process is required to form a second via hole penetrating through the pixel defining layer 25 and the planarization layer 23, and the second via hole exposes the cathode connection line 222.
Moreover, since a part of the film layer of the organic functional layer 26 is disposed on the pixel defining layer 25, when the second via hole penetrating through the pixel defining layer 25 and the planarization layer 23 is formed by using the laser drilling process, the part of the film layer on the pixel defining layer 25 can be cut off by laser, that is, the organic functional layer 26 on the pixel defining layer 25 corresponding to any two adjacent sub-pixels is cut off, so that a water and oxygen ingress path is blocked, and when the organic functional layer 26 on the pixel defining layer 25 is not cut off, water and oxygen can enter the display panel along the organic functional layer 26.
Then, as shown in fig. 2, an FMM (Fine Metal Mask) is used to evaporate a cathode layer 27 at the functional display area 20, the cathode layer 27 covers the organic functional layer 26, the cathode layer 27 includes a plurality of cathodes 271 spaced apart from each other and arranged in an array, and along the second direction, two adjacent cathodes 271 are connected to the cathode connection line 222 through a second via hole penetrating through the pixel defining layer 25 and the flat layer 23.
Specifically, the material of the cathode layer 27 is evaporated and the evaporated material is deposited on the organic functional layer 26 through the openings in the FMM.
Further, after step 606, the method further includes: forming an encapsulation layer covering the cathode layer and the pixel defining layer; and forming a color film layer on the packaging layer.
As shown in fig. 9, after the cathode layer 27 covering the organic functional layer 26 is formed in the functional display region 20, the encapsulation layer 28 covering the cathode layer 27 and the pixel defining layer 25 is formed, and the encapsulation layer 28 includes a first inorganic encapsulation layer 281, an organic encapsulation layer 282, and a second inorganic encapsulation layer 283.
Then, a color film layer 29 is formed on the encapsulation layer 28, where the color film layer 29 includes color film units 291 corresponding to the anodes 241, and each color film unit 291 includes a color resistor unit 2911 and a black matrix 2912 surrounding the color resistor unit 2911.
Wherein, the orthographic projection of the color resistance unit 2911 on the substrate 21 covers the orthographic projection of the organic functional layer 26 in the corresponding pixel opening on the substrate 21; the color of light allowed to pass through each color resistance unit 2911 is the same as the color of light emitted from the organic functional layer 26 in the corresponding pixel opening.
The orthographic projection of the color filter unit 291 on the substrate 21 covers the orthographic projection of the cathode 271 on the substrate 21, and the orthographic projection of the black matrix 2912 on the substrate 21 and the orthographic projection of the cathode 271 on the substrate 21 overlap each other.
Further, after forming the color film layer 29 on the encapsulation layer 28, the method further includes: a protective layer 31 is formed to cover the encapsulation layer 28 and the color film layer 29, and the protective layer 31 may be formed by a coating process.
In the embodiment of the invention, the electrode connecting layer, the flat layer, the anode layer, the pixel defining layer, the organic functional layer and the cathode layer are sequentially arranged in the functional display area where the functional device is positioned, so that the normal display function of the display panel where the functional display area is positioned is realized; simultaneously, because the rete number in function display area is less, then can improve the transmissivity of light, because the line quantity of walking in function display area is less, and positive pole and the equal interval distribution of negative pole, then can increase the effective light-transmitting area in function display area to reduce the coherent stack phenomenon of diffraction, with the normal performance of guaranteeing the function device, consequently, need not to set up the holding tank and place the function device, just can realize real comprehensive screen display when guaranteeing the normal use of function device.
EXAMPLE III
The embodiment of the invention provides a display device, which comprises a functional device 30 and the display panel; the functional device 30 is arranged on the side of the substrate 21 remote from the electrode connection layer 22, and the functional device 30 is located in the functional display area 20.
The functional device 30 includes a camera, a sensor, and the like.
For specific description of the display panel, reference may be made to the description of the first embodiment and the second embodiment, which is not repeated herein.
In addition, the display device further includes a driving chip, a TCON (Timer Control Register), and the like.
In practical applications, the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a display, a notebook computer, a navigator and the like.
In the embodiment of the invention, the electrode connecting layer, the flat layer, the anode layer, the pixel defining layer, the organic functional layer and the cathode layer are sequentially arranged in the functional display area where the functional device is positioned, so that the normal display function of the display panel where the functional display area is positioned is realized; simultaneously, because the rete number in function display area is less, then can improve the transmissivity of light, because the line quantity of walking in function display area is less, and positive pole and the equal interval distribution of negative pole, then can increase the effective light-transmitting area in function display area to reduce the coherent stack phenomenon of diffraction, with the normal performance of guaranteeing the function device, consequently, need not to set up the holding tank and place the function device, just can realize real comprehensive screen display when guaranteeing the normal use of function device.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
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.
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 apparatus 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 apparatus. 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 apparatus that comprises the element.
The display panel, the manufacturing method thereof and the display device provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea 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 (11)
1. A display panel, comprising:
a substrate; the substrate is divided into an effective display area and a functional display area where a functional device is located;
an electrode connection layer disposed on the substrate of the functional display region; the electrode connecting layer comprises a plurality of anode connecting wires and a plurality of cathode connecting wires which are insulated from each other, the anode connecting wires are distributed along a first direction, and the cathode connecting wires are distributed along a second direction;
a planarization layer covering the substrate and the electrode connection layer;
an anode layer disposed on the flat layer of the functional display region; the anode layer comprises a plurality of anodes which are spaced from each other, and along the first direction, two adjacent anodes are connected with the anode connecting line through first via holes which penetrate through the flat layer;
a pixel defining layer and an organic functional layer disposed on the anode layer;
a cathode layer disposed in the functional display region and covering the organic functional layer; the cathode layer comprises a plurality of cathodes which are spaced from each other, and along the second direction, two adjacent cathodes are connected with the cathode connecting line through a second via hole which penetrates through the pixel defining layer and the flat layer.
2. The display panel of claim 1, wherein an orthographic projection of the cathode on the substrate covers an orthographic projection of the anode on the substrate.
3. The display panel according to claim 1, wherein the electrode connection layer is made of a transparent conductive material and has a thickness of
To
4. The display panel according to claim 1, further comprising an encapsulation layer covering the cathode layer and the pixel defining layer, and a color film layer disposed on the encapsulation layer;
the color film layer comprises color film units corresponding to the anodes, and each color film unit comprises a color resistance unit and a black matrix surrounding the color resistance unit.
5. The display panel according to claim 4, wherein the pixel defining layer has a plurality of pixel openings, and an orthogonal projection of the color resistance unit on the substrate covers an orthogonal projection of the organic functional layer in the corresponding pixel opening on the substrate;
wherein each color resistance unit allows light to pass through the same color as the color of the light emitted by the organic functional layer in the corresponding pixel opening.
6. The display panel according to claim 4, wherein an orthogonal projection of the color filter unit on the substrate covers an orthogonal projection of the cathode on the substrate, and there is an overlapping region between an orthogonal projection of the black matrix on the substrate and an orthogonal projection of the cathode on the substrate.
7. The display panel according to any one of claims 1 to 6, wherein the display panel further comprises a protective layer covering the encapsulation layer and the color film layer.
8. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a substrate; the substrate is divided into an effective display area and a functional display area where a functional device is located;
forming an electrode connection layer on the substrate of the functional display region; the electrode connecting layer comprises a plurality of anode connecting wires and a plurality of cathode connecting wires which are insulated from each other, the anode connecting wires are distributed along a first direction, and the cathode connecting wires are distributed along a second direction;
forming a planarization layer covering the substrate and the electrode connection layer;
forming an anode layer on the planarization layer of the functional display region; the anode layer comprises a plurality of anodes which are spaced from each other, and along the first direction, two adjacent anodes are connected with the anode connecting line through first via holes which penetrate through the flat layer;
forming a pixel defining layer and an organic functional layer on the anode layer, respectively;
forming a cathode layer covering the organic functional layer in the functional display region; the cathode layer comprises a plurality of cathodes which are spaced from each other, and along the second direction, two adjacent cathodes are connected with the cathode connecting line through a second via hole which penetrates through the pixel defining layer and the flat layer.
9. The method of claim 8, further comprising, after the step of forming a cathode layer overlying the organic functional layer in the functional display area:
forming an encapsulation layer covering the cathode layer and the pixel defining layer;
forming a color film layer on the packaging layer;
the color film layer comprises color film units corresponding to the anodes, and each color film unit comprises a color resistance unit and a black matrix surrounding the color resistance unit.
10. The method of claim 9, further comprising, after the step of forming a color film layer on the encapsulation layer:
and forming a protective layer covering the packaging layer and the color film layer.
11. A display device characterized by comprising a functional device and the display panel according to any one of claims 1 to 7;
the functional device is arranged on one side of the substrate, which is far away from the electrode connecting layer, and the functional device is positioned in the functional display area.
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| CN113629208A (en) * | 2021-07-20 | 2021-11-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2023000381A1 (en) * | 2021-07-20 | 2023-01-26 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
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| WO2023060645A1 (en) * | 2021-10-12 | 2023-04-20 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
| CN114188495A (en) * | 2021-12-10 | 2022-03-15 | 惠州华星光电显示有限公司 | Display panel and preparation method thereof |
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