CN111834396A - Light-transmitting display panel, display panel and display device - Google Patents
Light-transmitting display panel, display panel and display device Download PDFInfo
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Abstract
The embodiment of the invention provides a light-transmitting display panel, a display panel and a display device. The light-transmitting display panel includes: an array substrate; the pixel definition layer is arranged on the array substrate and comprises isolation columns and an opening area formed by the isolation columns in a surrounding mode; and the second electrode is arranged on the pixel defining layer and comprises a main electrode and an auxiliary electrode, the auxiliary electrode is positioned on one side of the main electrode, which is far away from the pixel defining layer, the main electrode covers the isolating column and the opening area, and the auxiliary electrode covers at least part of the surface of the isolating column. When the light-transmitting display panel is applied to the display panel, at least partial area of the display panel can be light-transmitting and can display, and the light-transmitting display panel is convenient for under-screen integration of the photosensitive assembly.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a light-transmitting display panel, a display panel and a display device.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
Conventional electronic devices such as mobile phones, tablet computers, etc. need to integrate components such as front-facing cameras, earphones, infrared sensing elements, etc. In the prior art, a groove (Notch) or an opening may be formed in the display screen, and external light may enter the photosensitive element located below the screen through the groove or the opening. However, these electronic devices are not all full-screen in the true sense, and cannot display in each area of the whole screen, for example, the corresponding area of the front camera cannot display the picture.
Disclosure of Invention
The embodiment of the invention provides a light-transmitting display panel, a display panel and a display device, which can realize light transmission and display of at least partial area of the display panel and facilitate the under-screen integration of a photosensitive assembly.
In one aspect, an embodiment of the present invention provides a light-transmissive display panel, including: an array substrate; the pixel definition layer is arranged on the array substrate and comprises isolation columns and an opening area formed by the isolation columns in a surrounding mode; and the second electrode is arranged on the pixel defining layer and comprises a main electrode and an auxiliary electrode, the auxiliary electrode is positioned on one side of the main electrode, which is far away from the pixel defining layer, the main electrode covers the isolating column and the opening area, and the auxiliary electrode covers at least part of the surface of the isolating column.
According to an embodiment of an aspect of the present invention, the isolation pillar includes a top surface disposed opposite to the array substrate, and a side surface facing the opening region, and the auxiliary electrode covers the top surface and at least a portion of the side surface connected to the top surface;
preferably; the auxiliary electrode is arranged to cover the top surface and the side surface.
According to an aspect of the present invention, in any of the preceding embodiments, further comprising: the first electrode is arranged on the array substrate; the pixel defining layer is disposed on the first electrode, and the opening region exposes the first electrode.
According to one aspect of the present invention in any one of the preceding embodiments, the pixel defining layer includes a plurality of opening regions arranged in an array along a first direction and a second direction intersecting;
the auxiliary electrode is formed to extend along the first direction and/or the second direction corresponding to the space between two adjacent opening regions.
According to one aspect of the present invention, in any one of the embodiments, two or more auxiliary electrodes are spaced apart from each other in the extending direction of the auxiliary electrodes, and the extending length of a single auxiliary electrode in the extending direction of the auxiliary electrode is less than or equal to 90 mm.
According to an aspect of the invention in any one of the preceding embodiments, the auxiliary electrode has a thickness of 50nm to 100 nm.
According to one aspect of the invention in any one of the preceding embodiments, the material of the master electrode comprises a magnesium silver alloy;
and/or the material of the auxiliary electrode comprises one or more of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide and silver-doped indium zinc oxide.
According to one aspect of the present invention in any of the preceding embodiments, the light transmittance of the auxiliary electrode is greater than or equal to 60%, and preferably, the light transmittance of the auxiliary electrode is greater than or equal to 80%.
On the other hand, an embodiment of the present invention further provides a display panel, where the display panel has a first display area and a second display area, a light transmittance of the first display area is greater than a light transmittance of the second display area, and the first display area of the display panel is configured as the light-transmitting display panel.
In another aspect, an embodiment of the present invention further provides a display device, including the above light-transmitting display panel.
In the light-transmitting display panel implemented by the invention, the light-transmitting display panel comprises an array substrate, a pixel defining layer and a second electrode. A main electrode of the second electrode covers the opening region of the pixel defining layer and the isolation pillar, and an auxiliary electrode of the second electrode is disposed corresponding to at least a portion of a surface of the isolation pillar. Namely, the main electrode and the auxiliary electrode are sequentially covered on the isolation column, the structural strength of the second electrode can be improved through the auxiliary electrode, and the second electrode is prevented from being broken at the position corresponding to the isolation column. Therefore, the main electrode of the light-transmitting display panel can be arranged to be thinner, so that the light transmittance of the light-transmitting display panel is increased.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic plan view illustrating a light-transmissive display panel according to an embodiment of the invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;
fig. 5 is a schematic plan view illustrating a light-transmissive display panel according to another embodiment of the present invention;
fig. 6 is a schematic plan view illustrating a light-transmissive display panel according to another embodiment of the present invention;
FIG. 7 is a cross-sectional view taken at C-C of FIG. 6;
FIG. 8 is a cross-sectional view taken at D-D of FIG. 6;
fig. 9 is a schematic plan view illustrating a light-transmissive display panel according to still another embodiment of the present invention;
fig. 10 is a schematic plan view illustrating a light-transmissive display panel according to still another embodiment of the present invention;
FIG. 11 is a cross-sectional view taken at E-E of FIG. 10;
FIG. 12 is a cross-sectional view at F-F of FIG. 10;
fig. 13 is a schematic plan view illustrating a light-transmissive display panel according to still another embodiment of the present invention;
fig. 14 is a graph comparing light transmittance test results of a light-transmissive display panel according to an embodiment of the invention.
Description of reference numerals:
100. an array substrate; 110. a substrate; 120. a device layer;
200. a light emitting device layer; 210. a first electrode; 220. a pixel defining layer; 221. an isolation column; 221a, a top surface; 221b, side; 222. an open area; 223. a light emitting device; 230. a second electrode; 231. a main electrode; 232. an auxiliary electrode; 232a, a first auxiliary electrode; 232b and a second auxiliary electrode.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated for convenience in describing the invention and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The directional terms appearing in the following description are intended to be illustrative in all directions, and are not intended to limit the specific construction of embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For better understanding of the present invention, the light-transmitting display panel, the display panel and the display device according to the embodiments of the present invention are described in detail below with reference to fig. 1 to 14.
On electronic devices such as mobile phones and tablet computers, it is necessary to integrate a photosensitive component such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so that full-screen display of the electronic device is achieved under the condition that the photosensitive component is ensured to work normally.
In the light-transmitting display region, in order to have a high light transmittance, the material of the functional layer in the light-transmitting region of the display panel is usually a light-transmitting material. For example, the anode of the light-transmitting region is made of ITO (Indium Tin Oxide, Tin-doped Indium Oxide) material, or the cathode is made of ITO material. However, when the whole cathode is made of ITO material, the cathode needs to be formed by sputtering deposition. Plasma sputtering generated in the sputtering deposition process can damage functional layers formed by organic materials, such as light-emitting devices and the like below the cathode, and the performance of the light-emitting devices is seriously influenced. Or the functional layer taking the non-light-transmitting material as the main material is thinned to improve the light transmittance, for example, the cathode layer of the magnesium-silver alloy is thinned. However, thinning the cathode may reduce the structural strength of the cathode layer, and the cathode layer may break during use, which may affect the lifetime of the display panel.
In order to solve the above problems, embodiments of the present invention provide a light-transmitting display panel, a display panel, and a display device, and embodiments of the light-transmitting display panel, the display panel, and the display device will be described below with reference to the accompanying drawings.
The present invention first provides a display device, which includes a display panel, and the display device may be, but not limited to, an electronic device such as a mobile phone and a tablet computer.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. According to fig. 1, in some alternative embodiments, the display panel includes a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2, that is, the first display area AA1 is a light-transmissive display area.
The shape of the first display area AA1 is various, for example, the first display area AA1 is circular, rectangular or other irregular shape. The first display area AA1 may be disposed at various positions, such as a middle area of the first display area AA1 at the top of the display panel, or a corner area of the first display area AA1 near the display panel.
Herein, the light transmittance of the first display area AA1 is 15% or more. In order to ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the light transmittance of each functional film layer in the first display area AA1 is greater than 80%, or even at least a portion of the functional film layers is greater than 90%.
According to the first display area AA1 of the embodiment of the present invention, the light transmittance of the first display area AA1 is greater than 15%, so that the photosensitive component can be integrated on the back of the first display area AA1, and the under-screen integration of the photosensitive component, such as a camera, is realized, and at the same time, the first display area AA1 can also display a picture, and can realize a full-screen design of a display panel or a display device.
It will be appreciated that the photosensitive component may not be limited to an image capture device, for example, in some embodiments, the photosensitive component may also be an infrared sensor, a proximity sensor, an infrared lens, a flood sensing element, an ambient light sensor, and a light sensor such as a dot matrix projector. In addition, the display device may further integrate other components, such as a handset, a speaker, etc., on the lower surface of the display panel.
In other alternative embodiments, the display panel is a full-surface light-transmissive display panel, that is, the display panel includes the first display area AA1, but the display panel does not include the second display area AA 2. I.e. the display panel comprises only a light transmissive display panel and not a non-light transmissive display panel.
Referring to fig. 2 to 4, fig. 2 is a schematic plan view of a light-transmitting display panel according to an embodiment of the invention. Fig. 3 is a sectional view taken at a-a in fig. 2, and fig. 4 is a sectional view taken at B-B in fig. 2.
As shown in fig. 2 to fig. 2, in some alternative embodiments, the light-transmissive display panel includes an array substrate 100 and a light-emitting device layer 200 disposed on the array substrate 100, the light-emitting device layer 200 includes: the pixel definition layer 220 is disposed on the array substrate 100, and the pixel definition layer 220 includes an isolation pillar 221 and an opening area 222 surrounded by the isolation pillar 221; the second electrode 230 is disposed on the pixel defining layer 220, the second electrode 230 includes a main electrode 231 and an auxiliary electrode 232, the auxiliary electrode 232 is disposed on a side of the main electrode 231 away from the pixel defining layer 220, the main electrode 231 covers the isolation pillar 221 and the opening region 222, and the auxiliary electrode 232 covers at least a portion of a surface of the isolation pillar 221.
In the light-transmitting display panel implemented by the present invention, the light-transmitting display panel includes an array substrate 100 and a light-emitting device layer 200, a second electrode 230 in the light-emitting device layer 200 is disposed in two layers, and the second electrode 230 includes a main electrode 231 and an auxiliary electrode 232. The main electrode 231 of the second electrode 230 covers the pillars 221 and the opening regions 222, and the auxiliary electrode 232 of the second electrode 230 is disposed corresponding to at least a portion of the surface of the pillars 221. That is, the main electrode 231 and the auxiliary electrode 232 are sequentially covered on the isolation pillars 221, and the structural strength of the second electrode 230 can be improved by the auxiliary electrode 232, thereby preventing the second electrode 230 from being broken at the portions corresponding to the isolation pillars 221. Therefore, the main electrode 231 of the light-transmitting display panel can be arranged to be thin, so that the light transmittance of the light-transmitting display panel is increased, when the light-transmitting display panel is applied to the display panel, at least part of the area of the display panel can be light-transmitting and can display, and the light-sensing assembly can be conveniently integrated under a screen.
The main electrode 231 covering the isolation pillar 221 and the opening region 222 means: the orthographic projection area of the isolation pillars 221 and the opening areas 222 on the array substrate 100 is located within the orthographic projection area of the main electrode 231 on the array substrate 100.
In some alternative embodiments, the main electrode 231 has a continuous full-surface structure, so that the current can flow over the entire surface of the main electrode 231.
The auxiliary electrode 232 covers at least a part of the surface of the isolation pillar 221: the orthographic projection area of at least part of the isolation pillars 221 on the array substrate 100 is located within the orthographic projection area of the auxiliary electrode 232 on the array substrate 100.
It is understood that the auxiliary electrode 232 may cover at least a portion of the surface of a portion of the isolation pillar 221, or the auxiliary electrode 232 may cover at least a portion of the surface of the entire isolation pillar 221.
In some optional embodiments, the light emitting device layer 200 further includes a first electrode 210 disposed on the array substrate 100, a pixel defining layer 220 disposed on the first electrode 210, and the open region exposes the first electrode.
The array substrate 100 includes a substrate 110 and a device layer 120 on the substrate 110. The substrate 110 may be made of a light-transmitting material such as glass or Polyimide (PI). The device layer 120 may include pixel circuitry for driving the display of the individual subpixels.
In some alternative embodiments, a light emitting device 223 formed by evaporating an organic light emitting material is further disposed in the opening region 222, and the main electrode 231 covers the light emitting device 223.
The first electrode 210 is disposed on the device layer 120. In some embodiments, the first electrodes 210 are arranged in an array. The light emitting device 223 is positioned on the first electrode 210, and the main electrode 231 of the second electrode 230 is positioned on the light emitting device 223. Each first electrode 210 forms one sub-pixel with the light emitting device 223 and the corresponding main electrode 231, and the first electrode 210 may be connected with a corresponding pixel circuit in the device layer 120, so that the pixel circuit drives the sub-pixel to display.
One of the first electrode 210 and the second electrode 230 is an anode, and the other is a cathode. Here, the first electrode 210 is an anode, and the second electrode layer group 230 is a cathode.
The shape of the first electrodes 210 is not limited, and in some alternative embodiments, the orthographic projection of each first electrode 210 on the substrate is composed of one second pattern unit or is composed of a concatenation of two or more second pattern units, and the second pattern units comprise at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
In some alternative embodiments, the first electrode 210 is a light transmissive electrode. In some embodiments, the first electrode 210 includes an Indium Tin Oxide (ITO) layer or an Indium zinc Oxide (izo) layer. In some embodiments, the first electrode 210 is a reflective electrode, including a first light-transmissive conductive layer, a reflective layer on the first light-transmissive conductive layer, and a second light-transmissive conductive layer on the reflective layer. The first and second transparent conductive layers may be ITO, indium zinc oxide, etc., and the reflective layer may be a metal layer, such as made of silver.
The shape of the opening area 222 is not limited, and in some alternative embodiments, the orthographic projection of each opening area 222 on the array substrate 100 is composed of one first graphic unit or is composed of two or more first graphic units which are spliced, and the first graphic unit includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
The light Emitting device 223 may include an Emitting Layer (EML), and the formed sub-pixels may be classified into various types according to colors according to the colors emitted by the EML. In one example, the sub-pixels include a red light emitting sub-pixel, a green light emitting sub-pixel, and a blue light emitting sub-pixel, although not limited thereto in other examples. The light emitting device 223 may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Injection Layer (EIL), or an Electron Transport Layer (ETL) according to design requirements of the light emitting device 223.
In some alternative embodiments, the material of the main electrode 231 includes, for example, ytterbium or magnesium-silver alloy, so that the sheet resistance of the main electrode 231 is small, and the second electrode 230 has good conductivity, which facilitates cathode electron injection. The layer structure between the main electrode 231 and the first electrode 210 can form a suitable microcavity effect, thereby improving the display effect of the formed sub-pixel.
The thickness of the main electrode 231 is, for example, 6nm to 10nm to ensure a high transmittance of the second electrode 230.
The material of the auxiliary electrode 232 includes, but is not limited to, one or more of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide, which can ensure that the second electrode 230 has a high transmittance. And because the auxiliary electrode 232 is arranged corresponding to the isolation column 221, the auxiliary electrode 232 does not cover the opening region 222, and when the auxiliary electrode 232 is formed by using a sputtering deposition method, the light emitting device 223 in the opening region 222 is not damaged.
The thickness of the auxiliary electrode 232 is, for example, 50nm to 100 nm. The structural strength of the second electrode 230 cannot be ensured by preventing the thickness of the auxiliary electrode 232 from being too small, and meanwhile, the transmittance of the light-transmitting display panel is prevented from being influenced by the too large thickness of the auxiliary electrode 232.
As shown in fig. 4, the isolation pillars 221 include a top surface 221a disposed to face away from the array substrate 100 and a side surface 221b facing the opening region 222. The top surfaces 221a of the spacers 221, which are disposed away from the array substrate 100, are top surfaces 221a of the spacers 221 and the array substrate 100, which are disposed at intervals in a thickness direction (Z direction in fig. 3) of the light-transmissive display panel. A side surface 221b facing the opening area 222, i.e., a side surface 221b extended from the top surface 221a toward the array substrate 100.
There are various methods in which the auxiliary electrode 232 is disposed corresponding to at least a portion of the surface of the isolation pillar 221. For example, the auxiliary electrode 232 is disposed corresponding to the top surface 221a of the isolation pillar 221. Alternatively, in some preferred embodiments, the auxiliary electrode 232 covers the top surface 221a and at least a portion of the side surface 221b connected to the top surface 221 a. The auxiliary electrode 232 covering the top surface 221a means that: the orthographic projection of the top surface 221a on the array substrate 100 is located within the orthographic projection area of the auxiliary electrode 232 on the array substrate 100.
In these embodiments, the auxiliary electrode 232 covers the top surface 221a and at least a portion of the side surface 221b connected to the top surface 221a, i.e., the auxiliary electrode 232 covers the top surface 221a and the connection portion between the top surface 221a and the side surface 221 b. In the second electrode 230, since the connection portion between the top surface 221a and the side surface 221b has a corner shape, the connection portion between the main electrode 231 and the top surface 221a and the side surface 221b is easily broken. The auxiliary electrode 232 covers the top surface 221a and the connection portion between the top surface 221a and the side surface 221b, so that the structural strength of the second electrode 230 can be effectively improved, and the main electrode 231 can be prevented from being broken.
In other alternative embodiments, the auxiliary electrode 232 covers the top surface 221a and the side surface 221 b. That is, the auxiliary electrode 232 completely covers the surface of the isolation pillar 221, so that the structural strength of the second electrode 230 can be further improved, the main electrode 231 can be prevented from being broken, and the service life of the light-transmitting display panel can be prolonged.
The pixel defining layer 220 includes a plurality of opening regions 222, and the plurality of opening regions 222 are distributed in an array along a first direction (X direction in fig. 2) and a second direction (Y direction in fig. 2) according to a predetermined arrangement rule. The auxiliary electrode 232 corresponds to the surface of the isolation pillar 221, that is, the auxiliary electrode 232 is disposed between the adjacent two opening regions 222.
The auxiliary electrode 232 may be disposed in various ways, as shown in fig. 2 to 4, in some alternative embodiments, the auxiliary electrode 232 covers at least a portion of the surface of the isolation pillar 221, and the auxiliary electrode 232 is formed to extend along the first direction. Further, a plurality of auxiliary electrodes 232 are disposed at intervals in the second direction.
Referring to fig. 5, in some alternative embodiments, the auxiliary electrodes 232 extend along a first direction, and a plurality of auxiliary electrodes 232 are disposed at intervals along the extending direction of the auxiliary electrodes 232. The problem that the auxiliary electrode 232 is easily broken at the connection portion between the top surface 221a and the side surface 221b to affect the structural strength of the second electrode 230 due to the excessively long extension length of the auxiliary electrode 232 in the extension direction of the auxiliary electrode 232 is avoided. Meanwhile, the deformation of the mask for preparing the auxiliary electrode 232 can be avoided.
Referring to fig. 6 to 8, fig. 6 is a schematic plan view illustrating a transparent display panel according to another embodiment of the present invention, fig. 7 is a cross-sectional view taken along line C-C in fig. 6, and fig. 8 is a cross-sectional view taken along line D-D in fig. 6.
The auxiliary electrode 232 covers at least a portion of the surface of the isolation pillar 221, which is different from the above embodiment in that the auxiliary electrode 232 is formed to extend along the second direction. Further, the plurality of auxiliary electrodes 232 are disposed at intervals in the first direction.
Referring to fig. 9, in some alternative embodiments, the auxiliary electrodes 232 extend along the second direction, and a plurality of auxiliary electrodes 232 are disposed at intervals along the extending direction of the auxiliary electrodes 232. The problem that the auxiliary electrode 232 is easily broken at the connection portion between the top surface 221a and the side surface 221b to affect the structural strength of the second electrode 230 due to the excessively long extension length of the auxiliary electrode 232 in the extension direction of the auxiliary electrode 232 is avoided. Meanwhile, the deformation of the mask for preparing the auxiliary electrode 232 can be avoided.
Referring to fig. 10 to 12, fig. 10 is a schematic plan view of a light-transmitting display panel according to another embodiment of the present invention, fig. 11 is a cross-sectional view taken along line E-E in fig. 2, and fig. 12 is a cross-sectional view taken along line F-F in fig. 6.
The plurality of auxiliary electrodes 232 include a first auxiliary electrode 232a extending in a first direction and a second auxiliary electrode 232b extending in a second direction. So that the auxiliary electrode 232 can cover the isolation pillars 221 between two openings 222 adjacent in the first direction and the isolation pillars 221 between two openings 222 adjacent in the second direction.
Further, the plurality of first auxiliary electrodes 232a are spaced apart in the second direction; the plurality of second auxiliary electrodes 232 are spaced apart in the first direction.
Referring to fig. 13, in some alternative embodiments, the auxiliary electrodes 232 include first auxiliary electrodes 232a extending along a first direction and second auxiliary electrodes 232b extending along a second direction, two or more first auxiliary electrodes 232a are spaced apart from each other in the extending direction, and two or more second auxiliary electrodes 232b are spaced apart from each other in the extending direction. The problem that the auxiliary electrode 232 is easily broken at the connection portion between the top surface 221a and the side surface 221b to affect the structural strength of the second electrode 230 due to the excessively long extension length of the auxiliary electrode 232 in the extension direction of the auxiliary electrode 232 is avoided. Meanwhile, the deformation of the mask for preparing the auxiliary electrode 232 can be avoided.
The extension length of the auxiliary electrode 232 is, for example, less than or equal to 90mm, so that the auxiliary electrode 232 is prevented from being easily broken due to the overlong auxiliary electrode 232. And further, the deformation of the mask for preparing the auxiliary electrode 232 can be prevented.
In order to ensure that the light-transmitting display panel has high transmittance, the transmittance of the auxiliary electrode 232 is greater than or equal to 60%. Preferably, the light transmittance of the auxiliary electrode 232 is greater than or equal to 80%. Therefore, the second electrode 230 can have a higher transmittance, and the transmittance of the light-transmitting display panel can be improved.
Examples
The present disclosure is more particularly described in the following examples that are intended as illustrations only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art.
Example 1
The light-transmitting display panel includes an array substrate 100 and a light emitting device layer 200 disposed on the array substrate 100, the light emitting device layer 200 including: a first electrode 210 disposed on the array substrate 100; the pixel definition layer 220 is arranged on the side, opposite to the array substrate 100, of the first electrode 210, and the pixel definition layer 220 includes an isolation pillar 221 and an opening area 222 formed by the isolation pillar 221 in a surrounding manner; the second electrode 230 is disposed on the side of the pixel defining layer 220 facing away from the array substrate 100, the second electrode 230 includes a main electrode 231 and an auxiliary electrode 232, the main electrode 231 is disposed to cover the pixel defining layer 220, and the auxiliary electrode 232 is disposed to cover the top surface 221a and the side surface 221b of the isolation pillar 221 on the side of the main electrode 231 facing away from the pixel defining layer 220.
Wherein the thickness of the main electrode 231 is
The material is magnesium-silver alloy, and a Common Metal Mask (CMM) is adopted as an evaporation process Mask for manufacturing and molding. The auxiliary electrode 232 has a thickness of
The material is ITO material, and a Fine Metal Mask (FMM) is used as an evaporation process Mask for manufacturing and forming.
Comparative example 1
Unlike embodiment 1, the second electrode 230 in comparative example 1 includes only the thickness prepared by the CMM process using the magnesium silver alloy material selected on the pixel defining layer 220 as follows
And is a main electrode 231 laid in a whole layer.
Comparative example 2
Unlike embodiment 1, the second electrode 230 includes a thickness of the pixel defining layer 220 prepared by the CMM process using a magnesium silver alloy material
The main electrode 231 and the auxiliary electrode 232 are made of magnesium-silver alloy, that is, the position on the main electrode 231 corresponding to the surface of the isolating column 221 is made of magnesium-silver alloy through an FMM process, and the thickness of the magnesium-silver alloy is as thick as
The auxiliary electrode 232.
The sheet resistance and the transmittance of light of different wavelengths were measured in the above-described examples 1 and comparative examples 1 to 2, and the results were as follows:
the% transmittance (@460nm) means the transmittance of light having a wavelength of 460 nm. As shown in the above table, the second electrode in example 1 had a sheet resistance of 15.81. omega./sq, a transmittance of light having a wavelength of 460nm of 69.87%, a transmittance of light having a wavelength of 530nm of 78.13%, and a transmittance of light having a wavelength of 620nm of 83.73%.
The sheet resistance can be measured by various methods, for example, the sheet resistance is measured by a sheet resistance meter four-probe method. The light transmittance may be measured by various methods, for example, a reflectance measuring instrument (TF-TMS) of Korean Korea.
As can be seen from the table, the second electrode in example 1 has a small sheet resistance and a high light transmittance.
Referring to fig. 14, fig. 14 is a graph showing a comparison of the transmittance of each of the second electrodes for different wavelengths of light in example 1, comparative example 1, and comparative example 2. As can be seen from the transmittance verification results, the transmittance of the second electrode in example 1 is much higher than that of the auxiliary electrode made of the metal material in comparative example 2. And the auxiliary electrode made of ITO material has the function of light extraction, and the transmittance of the second electrode in the embodiment 1 is higher than that of the second electrode formed by thinning the common magnesium-silver alloy without the auxiliary electrode in the comparative example 1 within the range of 470-800 nm of visible light wavelength.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.
Claims (10)
1. A light-transmissive display panel, comprising:
an array substrate;
the pixel definition layer is arranged on the array substrate and comprises an isolation column and an opening area formed by the isolation column in a surrounding mode;
the second electrode is arranged on the pixel defining layer and comprises a main electrode and an auxiliary electrode, the auxiliary electrode is positioned on one side, away from the pixel defining layer, of the main electrode, the main electrode covers the isolation column and the opening area, and the auxiliary electrode covers at least part of the surface of the isolation column.
2. The light-transmissive display panel according to claim 1, wherein the spacers include a top surface facing away from the array substrate and a side surface facing the opening area, and wherein the auxiliary electrode covers the top surface and at least a portion of the side surface connected to the top surface;
preferably, the auxiliary electrode is disposed to cover the top surface and the side surface.
3. A light-transmissive display panel according to claim 1, further comprising:
the first electrode is arranged on the array substrate;
the pixel defining layer is disposed on the first electrode, and the opening region exposes the first electrode.
4. The transmissive display panel according to claim 1, wherein the pixel defining layer comprises a plurality of the opening regions arranged in an array along a first direction and a second direction intersecting;
the auxiliary electrode is positioned between two adjacent opening areas and is formed in an extending mode along the first direction and/or the second direction.
5. The light-transmissive display panel according to claim 4, wherein two or more of the auxiliary electrodes are spaced apart in a direction in which the auxiliary electrodes extend, and an extension length of a single auxiliary electrode in the direction in which the auxiliary electrode extends is 90mm or less.
6. A light-transmissive display panel in accordance with claim 1, wherein the auxiliary electrode has a thickness of 50nm to 100 nm.
7. A light-transmissive display panel in accordance with claim 1,
the material of the main electrode comprises magnesium-silver alloy;
and/or the material of the auxiliary electrode comprises one or more of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide and silver-doped indium zinc oxide.
8. The light-transmissive display panel according to claim 1, wherein a light transmittance of the auxiliary electrode is greater than or equal to 60%;
preferably, the auxiliary electrode has a light transmittance of 80% or more.
9. A display panel, wherein the display panel has a first display region and a second display region, the light transmittance of the first display region is greater than that of the second display region, and the first display region of the display panel is configured as the light-transmissive display panel according to any one of claims 1 to 8.
10. A display device comprising the light-transmitting display panel according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582348A (en) * | 2020-12-10 | 2021-03-30 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN114883512A (en) * | 2022-05-31 | 2022-08-09 | 京东方科技集团股份有限公司 | Electroluminescent display panel, preparation method thereof and display device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009187737A (en) * | 2008-02-05 | 2009-08-20 | Seiko Epson Corp | LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE |
| US20130134449A1 (en) * | 2011-11-29 | 2013-05-30 | Peng-Yu Chen | Display panel and manufacturing method thereof |
| US20140145152A1 (en) * | 2012-11-26 | 2014-05-29 | C/O Samsung Display Co., Ltd. | Display device and organic light emitting display device |
| US20140239259A1 (en) * | 2013-02-28 | 2014-08-28 | Samsung Display Co., Ltd. | Organic light-emitting display apparatus |
| US20140346459A1 (en) * | 2013-05-21 | 2014-11-27 | Samsung Display Co., Ltd. | Organic light emitting display apparatus and method of manufacturing the same |
| US20160104859A1 (en) * | 2014-10-08 | 2016-04-14 | Samsung Display Co., Ltd. | Organic light emitting diode display |
| US20160211488A1 (en) * | 2013-09-02 | 2016-07-21 | Dai Nippon Printing Co., Ltd. | Top-emission organic electroluminescence display device and production method therefor |
| US20170141347A1 (en) * | 2015-05-04 | 2017-05-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Oled display device |
| CN107482044A (en) * | 2017-08-23 | 2017-12-15 | 京东方科技集团股份有限公司 | Color membrane substrates and OLED display for OLED display |
| US20180190741A1 (en) * | 2017-08-31 | 2018-07-05 | Shanghai Tianma Micro-electronics Co., Ltd. | Display panel and display device |
| US20190058020A1 (en) * | 2017-08-18 | 2019-02-21 | Industrial Technology Research Institute | Transparent display device |
-
2019
- 2019-12-13 CN CN201911281150.3A patent/CN111834396A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009187737A (en) * | 2008-02-05 | 2009-08-20 | Seiko Epson Corp | LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE |
| US20130134449A1 (en) * | 2011-11-29 | 2013-05-30 | Peng-Yu Chen | Display panel and manufacturing method thereof |
| US20140145152A1 (en) * | 2012-11-26 | 2014-05-29 | C/O Samsung Display Co., Ltd. | Display device and organic light emitting display device |
| US20140239259A1 (en) * | 2013-02-28 | 2014-08-28 | Samsung Display Co., Ltd. | Organic light-emitting display apparatus |
| US20140346459A1 (en) * | 2013-05-21 | 2014-11-27 | Samsung Display Co., Ltd. | Organic light emitting display apparatus and method of manufacturing the same |
| US20160211488A1 (en) * | 2013-09-02 | 2016-07-21 | Dai Nippon Printing Co., Ltd. | Top-emission organic electroluminescence display device and production method therefor |
| US20160104859A1 (en) * | 2014-10-08 | 2016-04-14 | Samsung Display Co., Ltd. | Organic light emitting diode display |
| US20170141347A1 (en) * | 2015-05-04 | 2017-05-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Oled display device |
| US20190058020A1 (en) * | 2017-08-18 | 2019-02-21 | Industrial Technology Research Institute | Transparent display device |
| CN107482044A (en) * | 2017-08-23 | 2017-12-15 | 京东方科技集团股份有限公司 | Color membrane substrates and OLED display for OLED display |
| US20180190741A1 (en) * | 2017-08-31 | 2018-07-05 | Shanghai Tianma Micro-electronics Co., Ltd. | Display panel and display device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582348A (en) * | 2020-12-10 | 2021-03-30 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN114883512A (en) * | 2022-05-31 | 2022-08-09 | 京东方科技集团股份有限公司 | Electroluminescent display panel, preparation method thereof and display device |
| CN114883512B (en) * | 2022-05-31 | 2024-07-12 | 京东方科技集团股份有限公司 | Electroluminescent display panel, preparation method thereof and display device |
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Application publication date: 20201027 |