CN108039358B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN108039358B CN108039358B CN201711257892.3A CN201711257892A CN108039358B CN 108039358 B CN108039358 B CN 108039358B CN 201711257892 A CN201711257892 A CN 201711257892A CN 108039358 B CN108039358 B CN 108039358B
- Authority
- CN
- China
- Prior art keywords
- electrode
- layer
- display panel
- display
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device, which are used for solving the problem that the design difficulty of each layer of mask in a special-shaped display area is higher in the prior art. The display panel comprises a display area, a peripheral area, and at least one middle area between the display area and the peripheral area; wherein the edge of the middle area away from the display area comprises a first round corner with a first curvature radius; the edge of the middle area close to the display area comprises a first circular arc with a second curvature radius and a second circular arc with a third curvature radius; the display area and the middle area respectively comprise light-emitting units and pixel definition layers which are arranged in an array; the light emitting unit includes: the light-emitting diode comprises a first electrode, a light-emitting layer and a second electrode which are arranged in a stacked mode, wherein the light-emitting layer is located between the first electrode and the second electrode; in the display area, the pixel defining layer is used for defining a light emitting unit; the pixel defining layer covers the first electrode of the light emitting unit in the middle area.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
An OLED (Organic Light-Emitting Diode) display device has the advantages of low driving voltage, high Light-Emitting brightness, high Light-Emitting efficiency, wide Light-Emitting viewing angle, high response speed, ultra-thin property, Light weight, compatibility with a flexible substrate, and the like, and occupies an important position in the display field.
With the development of display technology, the demand of people for display devices is more and more diversified, the shape of a display panel is not limited to regular shapes such as a rectangle, and a special-shaped display panel gradually appears in the visual field of people. The shaped display panel is typically designed in a shape other than a regular rectangle, such as a convex polygon, a concave polygon, a circle, a ring, and so on. In order to match with the appearance touch of a user and improve the aesthetic feeling of a product, the display area of the special-shaped display panel is designed into the special-shaped display area. In order to realize full-screen display, the shapes of each layer of mask plate of the special-shaped display area are required to be consistent with those of the special-shaped display area, and the design difficulty of each layer of mask plate of the special-shaped display area is high.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for solving the problem that the design difficulty of each layer of mask in a special-shaped display area is higher in the prior art.
In view of the above problems, embodiments of the present invention provide a display panel including a display region, a peripheral region, and at least one intermediate region between the display region and the peripheral region;
wherein the edge of the middle area away from the display area comprises a first round corner with a first curvature radius; the edge of the middle area close to the display area comprises a first circular arc with a second curvature radius and a second circular arc with a third curvature radius;
the display area and the middle area respectively comprise light-emitting units and pixel definition layers which are arranged in an array; the light emitting unit includes: the light-emitting diode comprises a first electrode, a light-emitting layer and a second electrode which are arranged in a stacked mode, wherein the light-emitting layer is located between the first electrode and the second electrode;
in the display area, the pixel defining layer is used for defining a light emitting unit;
in the middle region, the pixel defining layer covers the first electrode of the light emitting unit.
On the other hand, the embodiment of the invention also provides a display device, which comprises the display panel provided by the embodiment of the invention.
The invention has the following beneficial effects:
in the display panel provided in the embodiment of the present invention, when two arcs are located at least one position of the edge of the display area, the display panel is provided with a middle area, the edge of the middle area, which is far away from the display area, is provided with a round angle, and the display area and the middle area both include light emitting units and pixel defining layers arranged in an array, because the pixel defining layers cover the first electrode of the middle area, the light emitting units of the middle area cannot normally display images, and in the using process of the display panel, the area actually displaying the images is the display area; when the mask of each layer of preparation display panel, the region that constitutes display area and middle zone jointly is as a whole to carry out the design of pixel to it, when the edge of display area has first circular arc and second circular arc, need not carry out the pixel according to two circular arcs and arrange, but carry out the pixel according to the first fillet on the edge of middle zone and arrange, radian and curvature radius through inputing first fillet, can realize arranging automatically of pixel, thereby reduce the design degree of difficulty of mask.
Drawings
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a light emitting unit of a display area according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light emitting unit in an intermediate region according to an embodiment of the present invention;
fig. 5, fig. 6, fig. 7 and fig. 8 are schematic structural diagrams of a display panel according to an embodiment of the present invention;
fig. 9 and fig. 10 are schematic structural diagrams of a light emitting unit according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a display area according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a middle region provided in an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are only for illustrating the relative positional relationship, the layer thicknesses of some parts are exaggerated in a drawing manner for easy understanding, and the layer thicknesses in the drawings do not represent the proportional relationship of the actual layer thicknesses.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may be present.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a display panel provided in the prior art, and includes a display area 01 and a peripheral area 02; four corners of the display area 01 are all designed into circular arcs, and each corner consists of two circular arcs; taking the upper right corner of the display area as an example, the edge of the display area has a circular arc 101 and a circular arc 102. Before the display panel shown in fig. 1 is manufactured, masks for respective layers, including but not limited to an anode layer mask, a light emitting layer mask, a cathode layer mask, and a pixel definition layer mask, are manufactured according to the shape of a display region. In order to ensure that the area of the actual display picture is consistent with the display area 01 when the manufactured display panel normally displays, when the anode layer mask, the light emitting layer mask, the cathode layer mask and the pixel definition layer mask are manufactured, the positions corresponding to four corners of the display area need to be designed according to two arcs, and the design difficulty is increased.
In addition, in the prior art, when an arc (or referred to as an R angle) is formed at the edge of the display area, when the masks of each layer are manufactured, the curvature radius and the radian of the arc are input, and the graphic arrangement in the corresponding mask can be automatically generated; and when the corner in display area comprises two circular arcs, because the pitch arc that two circular arcs are constituteed does not have definite radius of curvature and radian, can't the automatic generation, needs the designer to design manually to increase the design degree of difficulty, under the great condition of the number of pixels of waiting to arrange, this problem is especially outstanding.
In view of the above, the present invention provides a display panel and a display device to solve the problem that the mask design is difficult when two arcs are formed at the corner of the display area.
Optionally, an embodiment of the present invention provides a display panel, where the display panel is an organic light emitting display panel. As shown in fig. 2, fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, where the display panel according to the embodiment of the present invention includes a display area 01, a peripheral area 02, and at least one middle area 03 located between the display area 01 and the peripheral area 02;
wherein the edge of the middle area 03 remote from the display area 01 comprises a first rounded corner 10 having a first radius of curvature; the edge of the middle area 03 near the display area 01 includes a first circular arc 11 having a second radius of curvature and a second circular arc 12 having a third radius of curvature.
Specifically, in the display panel provided in the embodiment of the present invention, the display region 01 and the middle region 03 each include the light emitting units 20 and the pixel defining layer 21 arranged in an array.
Fig. 3 is a schematic structural diagram of a light emitting unit in a display area according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of a light emitting unit in a middle area according to an embodiment of the present invention, as shown in fig. 3 and 4, a light emitting unit 20 includes: a first electrode 201, a light-emitting layer 202, and a second electrode 203 are stacked, and the light-emitting layer 202 is located between the first electrode 201 and the second electrode 203.
Also, as shown in fig. 3, in the display region 01, the pixel defining layer 21 is used to define the light emitting unit 20; specifically, in the display region 01, the pixel defining layer 21 forms a plurality of openings, the light emitting units 20 are located in the openings, and the area defined by the openings is the light emitting area of each light emitting unit 20, considering that there is an error factor in the process, in order to make the light emitting units 20 located in the openings emit light, the area of the first electrode 201 is generally larger than the area of the corresponding opening, and the pixel defining layer 21 covers the edge of the first electrode 201. As shown in fig. 4, in the middle area 03, the pixel defining layer 21 covers the first electrode 201 of the light emitting unit 20, and since the pixel defining layer covers the first electrode of the light emitting unit with the pixel defining layer therebetween, and the pixel defining layer insulates the first electrode and the second electrode from each other, the light emitting unit located in the middle area cannot emit light.
In the display panel provided by the embodiment of the invention, when at least one position of the edge of the display area is provided with two circular arcs, the middle area is arranged on the display panel, the edge of the middle area far away from the display area is provided with a round angle, and the display area and the middle area both comprise light-emitting units and pixel definition layers which are arranged in an array, when the mask of each layer of the display panel is manufactured, the area formed by the display area and the middle area is taken as a whole, and the pixel design is carried out on the area, as shown in figure 2, when the edge of the display area has the first circular arc 11 and the second circular arc 12, there is no need to arrange pixels according to the two circular arcs, but carry out the pixel according to the first fillet on the edge of middle zone and arrange, radian and the curvature radius through inputing first fillet, can realize arranging automatically of pixel to reduce the design degree of difficulty of mask. On the other hand, a middle area is added at the edge of the display area with two arcs, the light emitting unit arrangement area is expanded to the area formed by the display area and the middle area together from the original display area, the increased area is formed by expanding the edges corresponding to the two arcs to the edges corresponding to the round angle, the edges are integrally arc-shaped, the area of the increased middle area is very limited, and therefore the design difficulty is reduced while the design of other areas is not influenced.
Optionally, the pixel defining layer 21 in the middle area 03 has a full-surface structure.
Specifically, as shown in fig. 4, in the intermediate region 03, the pixel defining layer 21 covers the first electrode 201 and the edge of the first electrode 201, and the pixel defining layer 21 in the intermediate region 03 has a full-surface structure. In the layout design process of the pixel definition layer, the design of the part positioned in the middle area can be realized through whole surface coverage, and the design process is simple. In the process of manufacturing the display panel, the pixel defining layer portion located in the middle region 03 and the pixel defining layer portion located in the display region can be manufactured by using one pixel defining layer mask in one process, so that the manufacturing process is simplified.
Optionally, the intermediate region is adjacent to at least one corner position of the display region.
Fig. 5, fig. 6, fig. 7 and fig. 8 are schematic structural diagrams of a display panel according to an embodiment of the present invention.
As shown in fig. 5, the display panel includes a display area 01, a peripheral area 02 and a middle area 03, and four corner positions of the display area 01 are all arcs formed by two arcs, such as four middle areas 03 in fig. 5, which are all adjacent to the corner positions of the display area.
Alternatively, the arrangement rule of the light emitting units 20 in the middle area 03 and the display area 01 is the same.
The display panel provided by the embodiment of the invention comprises a middle area 03 and a display area 01, wherein the arrangement rules of the light-emitting units 20 in the middle area 03 and the display area 01 are the same, and when the mask of each layer of the display panel is manufactured, the mask of each layer in the middle area 03 and the display area 01 can be manufactured by one-step process because the arrangement rules of the light-emitting units in the middle area 03 and the display area 33 are the same, so that the manufacturing process of the mask is simplified; and design the mask according to the edge in the region that middle zone 03 and display area 01 constitute, because the edge that middle zone 30 is located to keep away from display area 32 includes a first arc angle, when designing each layer mask of display panel, can carry out the pixel according to first fillet and arrange, under the radian and the curvature radius's of known first fillet condition, can realize arranging automatically of pixel to reduce the design degree of difficulty of mask. It should be noted that, since the shape of the first rounded corner is a regular shape, the radian and the curvature radius thereof are easily known to those skilled in the art.
Optionally, the radian of the first rounded corner ranges from less than or equal to pi/2 rad.
The following implementation manner may be adopted for the first rounded corner 10 of the middle area 03 of the display panel away from the edge of the display area 01 according to the embodiment of the present invention.
In one possible embodiment, the first rounded corner 10 has a radian of π/2 rad; and the edge of the middle area 03 further comprises a first line segment 13 and a second line segment 14 connected with the first fillet 10, and the first fillet 10 is tangent to the first line segment 13 and the second line segment 14.
As shown in fig. 5, the display panel includes a display area 01, and a right upper corner of the display area 01 is composed of two arcs, namely a first arc 11 and a second arc 12; the edge of the display area 01 further comprises a third line segment 15 connected with the first circular arc 11, and the edge of the display area 01 further comprises a fourth line segment 16 connected with the second circular arc 12, and the edge between the third line segment 15 and the fourth line segment 16 is the first circular arc 11 and the second circular arc 12;
the display panel comprises a middle area 03, wherein the edge of the middle area 03 consists of a first circular arc 11, a second circular arc 12, a first line segment 13, a second line segment 14 and a first round angle 10 which are positioned at the edge of the display area 01; wherein the first line segment 13 is connected with the third line segment 15, the second line segment 14 is connected with the fourth line segment 16, and the first fillet 10 is tangent to the first line segment 13, and the first fillet 10 is tangent to the second line segment 14; in the first fillet implementation shown in FIG. 5, the first fillet 10 has a radian of π/2 rad.
In the above-described preferred embodiment, the radius of curvature of the first fillet 10 is smaller than the radius of curvature of the first circular arc 11, and the radius of curvature of the first fillet 10 is smaller than the radius of curvature of the second circular arc 12.
In practice, the curvature radius of the first rounded corner 10 may be set according to the shapes of the first circular arc 11 and the second circular arc 12 at the edge of the display area 01.
According to the implementation mode of the first fillet provided by the embodiment of the invention, the radian of the first fillet 10 is pi/2 rad, the first fillet 10 is tangent to the adjacent first line segment 13 and second line segment 14, the first fillet 10 is an R corner, when each layer of mask of the display panel is manufactured, the design is carried out according to the first fillet 10, after the radian and the curvature radius of the first fillet are input, the automatic arrangement of pixels can be realized, and the manual pixel arrangement according to the first arc 11 and the second arc 12 is not needed, so that the design difficulty of the mask is reduced.
In one possible embodiment, the radian of the first rounded corner 10 is less than pi/2 rad; and the edge of the middle area 03 further comprises a first line segment 13 and a second line segment 14 connected with the first fillet 10, wherein the curvature circle of the first fillet 10 intersects with the extension line of the first line segment 13, and the curvature circle of the first fillet 10 intersects with the extension line of the second line segment 14.
As shown in fig. 7, the display panel includes a display area 01, and a right upper corner of the display area 01 is composed of two arcs, namely a first arc 11 and a second arc 12; the edge of the display area 01 further comprises a third line segment 15 connected with the first circular arc 11, and the edge of the display area 01 further comprises a fourth line segment 16 connected with the second circular arc 12, and the edge between the third line segment 15 and the fourth line segment 16 is the first circular arc 11 and the second circular arc 12;
the display panel comprises a middle area 03, wherein the edge of the middle area 03 consists of a first circular arc 11, a second circular arc 12, a first line segment 13, a second line segment 14 and a first round angle 10 which are positioned at the edge of the display area 01; the first line segment 13 is connected with the third line segment 15, and the second line segment 14 is connected with the fourth line segment 16; as shown in fig. 8, a curvature circle 324 where the first fillet 10 is located intersects with an extension line of the first line segment 13, and a curvature circle 324 where the first fillet 10 is located intersects with an extension line of the second line segment 14. In the first fillet implementation shown in FIG. 7, the first fillet 10 has a radian less than π/2 rad.
In the above-described preferred embodiment, the radius of curvature of the first fillet 10 is smaller than the radius of curvature of the first circular arc 11, and the radius of curvature of the first fillet 10 is smaller than the radius of curvature of the second circular arc 12.
In practice, the curvature radius of the first rounded corner 10 may be set according to the shapes of the first circular arc 11 and the second circular arc 12 at the edge of the display area 01.
According to the first implementation manner of the first fillet provided by the embodiment of the invention, the radian of the first fillet 10 is pi/2 rad, the first fillet 10 is tangent to the adjacent first line segment 13 and second line segment 14, the first fillet 10 is an R corner, when each layer of mask of the display panel is manufactured, the design is performed according to the first fillet 10, after the radian and the curvature radius of the first fillet are input, the automatic arrangement of pixels can be realized, and the manual pixel arrangement according to the first arc 11 and the second arc 12 is not needed, so that the design difficulty of the mask is reduced.
In an implementation manner, in the display panel provided in the embodiment of the present invention, as shown in fig. 9, fig. 9 is a schematic structural diagram of the light emitting unit provided in the embodiment of the present invention, the display panel further includes a hole injection layer 204 and a hole transport layer 205 disposed between the first electrode 201 and the light emitting layer 202, and an electron transport layer 336 and an electron injection layer 207 disposed between the light emitting layer 202 and the second electrode 203;
wherein the edges of the hole injection layer 204 and the hole transport layer 205 each comprise a second fillet having a fourth radius of curvature; the edges of the electron transport layer 336 and the electron injection layer 207 each include a third rounded corner having a fifth radius of curvature;
specifically, an orthographic projection of a circle on the display panel, the second rounded corner of the edge of the hole injection layer 204 and the hole transport layer 205, an orthographic projection of a circle on the display panel, the third rounded corner of the edge of the electron transport layer 336 and the electron injection layer 207, and an orthographic projection of a circle on the display panel, the first rounded corner of the edge of the middle area are concentric circles.
When the hole injection layer 204, the hole transport layer 205, the electron transport layer 336, and the electron injection layer 207 are fabricated in the above manner, the display region 01 and the intermediate region 03 of the display panel each include the hole injection layer 204, the hole transport layer 205, the electron transport layer 336, and the electron injection layer 207, and the hole injection layer 204, the hole transport layer 205, the electron transport layer 336, and the electron injection layer 207 are of a full-face structure.
Since the edge of the display area includes an arc formed by two arcs, in the prior art, when the mask for the hole injection layer 204, the hole transport layer 205, the electron transport layer 336 and the electron injection layer 207 is manufactured, the inner edge of the mask needs to be correspondingly designed to have two arcs, the recognition and operability of the device for manufacturing the mask to the edge with the irregular arc are not high, and there is a difficulty in forming the corresponding edge of the mask. The display panel of the embodiment of the invention also comprises a middle area with a first round angle, and when mask plates of the hole injection layer 204, the hole transport layer 205, the electron transport layer 206 and the electron injection layer 207 are manufactured, the manufacturing difficulty is reduced because the edges of the mask plates are regular arcs; the design according to the first rounded corner also reduces the difficulty of designing the masks of the hole injection layer 204, the hole transport layer 205, the electron transport layer 206 and the electron injection layer 207.
In another embodiment, in the display panel provided in the embodiment of the present invention, as shown in fig. 10, fig. 10 is a schematic structural diagram of the light emitting unit provided in the embodiment of the present invention, the display panel further includes a hole injection layer 204 and a hole transport layer 205 disposed between the first electrode 201 and the light emitting layer 202, and an electron transport layer 206 disposed between the light emitting layer 202 and the second electrode 203;
wherein the edges of the hole injection layer 204 and the hole transport layer 205 each comprise a second fillet having a fourth radius of curvature; the edges of the electron transport layer 206 each include a third rounded corner having a fifth radius of curvature;
specifically, the orthographic projection of the circle with the second round corner of the edge of the hole injection layer 204 and the hole transport layer 205 on the display panel, the orthographic projection of the circle with the third round corner of the edge of the electron transport layer 206 on the display panel, and the orthographic projection of the circle with the first round corner of the edge of the middle area on the display panel are concentric circles.
When the hole injection layer 204, the hole transport layer 205, and the electron transport layer 206 are fabricated in the above manner, the display region 01 and the intermediate region 03 of the display panel each include the hole injection layer 204, the hole transport layer 205, and the electron transport layer 206, and the hole injection layer 204, the hole transport layer 205, and the electron transport layer 206 are of a full-face structure.
Because the hole injection layer, the hole transport layer, the electron transport layer and the electron injection layer can be of a whole-surface structure, the mask plates corresponding to the four film layers can be annular, the hollow part in the middle of the annular corresponds to the display area, in the prior art, when the edge of the display area comprises an arc line formed by two arc lines, the inner edges (annular inner edges) of the mask plates of the hole injection layer 204, the hole transport layer 205, the electron transport layer 336 and the electron injection layer 207 also need to be correspondingly designed to be provided with the two arc lines, the recognition degree and the operability of the equipment for manufacturing the mask plates to the edges with irregular arc lines are not high, and the difficulty exists in forming the corresponding edges of the mask plates. The display panel of the embodiment of the invention further comprises a middle area with a first round angle, and the inner edges of the mask plates of the hole injection layer 204, the hole transport layer 205, the electron transport layer 206 and the electron injection layer 207 are regular arcs, so that the manufacturing difficulty is reduced; the inner edges of the mask plates of the hole injection layer 204, the hole transport layer 205, the electron transport layer 206 and the electron injection layer 207 are designed to be provided with first round corners, the first round corners are regular arcs, design is easy, and design difficulty of the mask plates is reduced. On the other hand, the inner edges of the masks of the hole injection layer 204, the hole transport layer 205, the electron transport layer 206 and the electron injection layer 207 are designed to have first round corners, compared with a mask with two arcs forming corners at the inner edges, the mask is more universal and can be shared with a mask corresponding to an effective display area with a round rectangular shape, and the process cost is saved. It should be noted that, in addition to the above two embodiments, in the above display panel provided in this embodiment of the present invention, only a hole transport layer may be included between the first electrode and the light emitting layer, or only a hole injection layer may be included between the first electrode and the light emitting layer.
Optionally, the middle region 03 further includes a thin film transistor electrically connected to the light emitting unit 20; the intermediate region further includes a signal line electrically connected to the thin film transistor.
It should be noted that the display panel provided in the embodiment of the present invention includes the display region 01, and since the display region 01 is an effective display region, the display region 01 also includes a thin film transistor electrically connected to the light emitting unit 20 and a signal line electrically connected to the thin film transistor.
Fig. 11 is a schematic structural diagram of a display area according to an embodiment of the present invention, where the display area shown in fig. 11 includes a substrate 04 and thin film transistors 22 sequentially disposed on the substrate 04, and the thin film transistors 22 sequentially move away from an upper surface of the substrate 04, and include: a semiconductor active layer 221, wherein the semiconductor active layer 221 includes a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions, and a channel region between the source region and the drain region, which is not doped with impurities; a gate insulating layer 222, a gate electrode 211, an interlayer insulating layer 224, a source electrode 225, and a drain electrode 211 over the semiconductor active layer 221, the source electrode 225 and the drain electrode 211 electrically connecting a source region and a drain region in the semiconductor active layer 221 through contact holes in the interlayer insulating layer 224 and the gate insulating layer 222, respectively.
In the embodiment of the invention, the thin film transistors and the signal lines electrically connected with the thin film transistors are simultaneously arranged in the middle area, so that the load difference between the signal lines and between the pixel units can be balanced, and the uniformity of the display effect is realized.
The light emitting unit 20 of the display region is formed on the thin film transistor 22, and the light emitting unit 20 sequentially includes in a direction away from the base substrate 01: a first electrode 201, a light emitting layer 202, and a second electrode 203.
Wherein the first electrode 201 serves as an anode, and is electrically connected to the source and drain regions in the semiconductor active layer 221 through the contact hole; the first electrode 201 may be formed of various conductive materials. For example, the first electrode 201 may be formed as a transparent electrode or a reflective electrode according to its use;
when the first electrode is formed as a transparent electrode, the first electrode may include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), or the like; when the first electrode is formed as a reflective electrode, the reflective layer may be formed of silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or a mixture thereof, and ITO, IZO, ZnO, In2O3, or the like may be formed on the reflective layer.
The pixel defining layer 21 is on the planarization layer to cover the edge of the first electrode 201 for defining the light emitting unit 20. In an alternative embodiment, the pixel defining layer around the edge of the first electrode defines the emission area of each sub-pixel. The pixel defining layer may be formed of an organic material such as Polyimide (PI), polyamide, benzocyclobutene (BCB), acryl resin, or phenol resin.
The light emitting layer 202 is positioned on the first electrode 201, and the portion of the first electrode 201 on which the light emitting layer is disposed is not covered by the pixel defining layer 21 and is exposed. The light emitting layer 202 may be formed through a vapor deposition process, and the light emitting layer is patterned to correspond to each sub-pixel, i.e., to the patterned first electrode, and may be formed of a low molecular weight organic material or a high molecular weight organic material.
A second electrode 203 serving as a cathode on the light-emitting layer 202; like the first electrode 201, the second electrode 203 may be formed as a transparent electrode or a reflective electrode;
when the second electrode 203 is formed as a transparent electrode, a compound having a small work function such as lithium (Li), calcium (Ca), lithium fluoride/calcium (LiF/Ca), lithium fluoride/aluminum (LiF/Al), aluminum (Al), magnesium (Mg), or a combination thereof may be initially deposited on the light emitting layer by evaporation, and a transparent electrode forming material such as ITO, IZO, ZnO, or In2O3 may be deposited on the compound;
when the second electrode 203 is formed as a reflective electrode, the second electrode may be formed by evaporating Li, Ca, LiF/Al, Mg, or a mixture thereof over the entire surface of the flexible substrate;
the first electrode 201 and the second electrode 203 are insulated from each other by the light emitting layer 202, and if a voltage is applied between the first electrode 201 and the second electrode 203, the light emitting layer 202 emits visible light, thereby realizing an image that can be recognized by a user.
Fig. 12 is a schematic structural diagram of an intermediate region according to an embodiment of the present invention, and the display region shown in fig. 12 includes a substrate 01 and thin film transistors 22 sequentially disposed on the substrate 01, where the thin film transistors 22 sequentially move away from an upper surface of the substrate 01, and include: a semiconductor active layer 221, wherein the semiconductor active layer 221 includes a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions, and a channel region between the source region and the drain region, which is not doped with impurities; a gate insulating layer 222, a gate electrode 211, an interlayer insulating layer 224, a source electrode 225, and a drain electrode 211 over the semiconductor active layer 221, the source electrode 225 and the drain electrode 211 electrically connecting a source region and a drain region in the semiconductor active layer 221 through contact holes in the interlayer insulating layer 224 and the gate insulating layer 222, respectively.
In the embodiment of the invention, the thin film transistors and the signal lines electrically connected with the thin film transistors are simultaneously arranged in the middle area, so that the load difference between the signal lines and between the pixel units can be balanced, and the uniformity of the display effect is realized. It should be noted that, the pixel unit may include a light emitting unit and a pixel circuit electrically connected to the light emitting unit, and the pixel circuit is formed by a thin film transistor, and although the light emitting unit located in the middle region does not emit light, a signal may still be transmitted to the pixel circuit corresponding to the light emitting unit, and still a load difference between the signal lines and between the pixel units may be balanced.
The light emitting unit 20 of the display region is formed on the thin film transistor 22, and the light emitting unit 20 sequentially includes in a direction away from the base substrate 01: a first electrode 201, a light emitting layer 202, and a second electrode 203.
Wherein the first electrode 201 serves as an anode, and is electrically connected to the source and drain regions in the semiconductor active layer 221 through the contact hole; the first electrode 201 may be formed of various conductive materials. For example, the first electrode 201 may be formed as a transparent electrode or a reflective electrode according to its use;
when the first electrode is formed as a transparent electrode, the first electrode may include ITO, IZO, ZnO, or In2O3, or the like; when the first electrode is formed as a reflective electrode, the reflective layer may be formed of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, or a mixture thereof, and ITO, IZO, ZnO, In2O3, or the like may be formed on the reflective layer.
The pixel defining layer 21 is on the planarization layer covering the edge of the first electrode 201, and the pixel defining layer 21 covers the first electrode 201. In an alternative embodiment, the pixel defining layer around the edge of the first electrode defines the emission area of each sub-pixel. The pixel defining layer may be formed of an organic material such as Polyimide (PI), polyamide, benzocyclobutene (BCB), acryl resin, or phenol resin.
The light emitting layer 202 is positioned on the pixel defining layer 21, the light emitting layer 202 may be formed through a vapor deposition process, the light emitting layer is patterned to correspond to each sub-pixel, that is, to correspond to the patterned first electrode, and the light emitting layer may be formed of a low molecular weight organic material or a high molecular weight organic material.
A second electrode 203 serving as a cathode on the light-emitting layer 202; like the first electrode 201, the second electrode 203 may be formed as a transparent electrode or a reflective electrode;
when the second electrode 203 is formed as a transparent electrode, a compound having a small work function such as Li, Ca, LiF/Al, Mg, or a combination thereof may be initially deposited on the light emitting layer by evaporation, and a transparent electrode forming material such as ITO, IZO, ZnO, or In2O3 may be deposited on the compound;
when the second electrode 203 is formed as a reflective electrode, the second electrode may be formed by evaporating Li, Ca, LiF/Al, Mg, or a mixture thereof over the entire surface of the flexible substrate;
since the first electrode 201 is covered with the pixel defining layer 21, since the pixel defining layer 21 covers the first electrode 201 of the light emitting unit 20, and the pixel defining layer is provided between the first electrode 201 and the second electrode 203, the pixel defining layer insulates the first electrode 201 and the second electrode 203 from each other, the light emitting unit located in the middle region cannot emit light, and thus cannot normally display an image.
Optionally, the edge of the middle area far from the display area may also be two sides forming a right angle, and the area formed by the middle area and the display area together is rectangular. The arrangement of the rectangular regions can further balance the load between the signal lines and between the pixels.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, and fig. 13 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and as shown in fig. 13, the display device includes the display panel provided in the embodiment of the present invention. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The implementation of the display device can be referred to the above embodiments of the organic light emitting display panel, and repeated descriptions are omitted.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display panel comprising a display area, a peripheral area, and at least one intermediate area between the display area and the peripheral area;
wherein an edge of the middle region away from the display region includes a first rounded corner having a first radius of curvature; the edge of the middle area close to the display area comprises a first circular arc with a second curvature radius and a second circular arc with a third curvature radius;
the display area and the middle area both comprise light emitting units and pixel defining layers which are arranged in an array; the light emitting unit includes: the light-emitting diode comprises a first electrode, a light-emitting layer and a second electrode which are arranged in a stacked mode, wherein the light-emitting layer is located between the first electrode and the second electrode;
in the display region, the pixel defining layer is used to define the light emitting unit;
the pixel defining layer covers the first electrode of the light emitting unit in the middle region;
the arrangement rule of the light emitting units in the middle area and the display area is the same.
2. The display panel according to claim 1, wherein the pixel defining layer of the middle region is a full-face structure.
3. The display panel of claim 1, wherein the first rounded corner has a radian in a range of less than or equal to pi/2 rad;
the edge of the intermediate region further comprises a first line segment and a second line segment connected with the first rounded corner, and the first rounded corner is tangent to the first line segment and the second line segment.
4. The display panel of claim 1, wherein the first radius of curvature is less than the second radius of curvature and the first radius of curvature is less than the third radius of curvature.
5. The display panel according to claim 1, further comprising a hole injection layer and a hole transport layer disposed between the first electrode and the light emitting layer;
wherein edges of the hole injection layer and the hole transport layer include a second fillet having a fourth radius of curvature;
the orthographic projection of the circle where the first round angle is located on the display panel and the orthographic projection of the circle where the second round angle is located on the display panel are concentric circles.
6. The display panel according to claim 1, further comprising at least one of an electron transport layer and an electron injection layer provided between the light emitting layer and the second electrode;
wherein an edge of the electron transport layer and/or the electron injection layer comprises a third fillet having a fifth radius of curvature;
the orthographic projection of the circle where the first round angle is located on the display panel and the orthographic projection of the circle where the third round angle is located on the display panel are concentric circles.
7. The display panel of claim 1, wherein the middle region is adjacent to at least one corner location of the display region.
8. The display panel according to claim 1, wherein the middle region further includes a thin film transistor electrically connected to the light emitting cell.
9. The display panel according to claim 8, wherein the middle region further includes a signal line electrically connected to the thin film transistor.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711257892.3A CN108039358B (en) | 2017-11-30 | 2017-11-30 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711257892.3A CN108039358B (en) | 2017-11-30 | 2017-11-30 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108039358A CN108039358A (en) | 2018-05-15 |
| CN108039358B true CN108039358B (en) | 2020-09-11 |
Family
ID=62094748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711257892.3A Active CN108039358B (en) | 2017-11-30 | 2017-11-30 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108039358B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550616B (en) * | 2018-06-12 | 2020-07-31 | 京东方科技集团股份有限公司 | O L ED display substrate, manufacturing method thereof and display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355097A (en) * | 2007-07-23 | 2009-01-28 | 精工爱普生株式会社 | Electrooptical device, electronic apparatus, and method for producing electrooptical device |
| CN105529348A (en) * | 2014-10-20 | 2016-04-27 | 乐金显示有限公司 | Display apparatus |
| CN205334901U (en) * | 2016-01-25 | 2016-06-22 | 成都京东方光电科技有限公司 | Dysmorphism display panel and display device |
| CN105788470A (en) * | 2014-12-25 | 2016-07-20 | 昆山维信诺科技有限公司 | Circular display screen and manufacturing method of circular display screen |
| CN105810710A (en) * | 2014-12-31 | 2016-07-27 | 昆山国显光电有限公司 | OLED device and preparing method thereof |
| CN105911744A (en) * | 2016-06-29 | 2016-08-31 | 上海天马微电子有限公司 | Display panel and display device |
| CN106409867A (en) * | 2015-07-29 | 2017-02-15 | 乐金显示有限公司 | Organic light emitting display device |
| CN106856204A (en) * | 2016-12-28 | 2017-06-16 | 上海天马有机发光显示技术有限公司 | A kind of OLED display panel, display device |
-
2017
- 2017-11-30 CN CN201711257892.3A patent/CN108039358B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355097A (en) * | 2007-07-23 | 2009-01-28 | 精工爱普生株式会社 | Electrooptical device, electronic apparatus, and method for producing electrooptical device |
| CN105529348A (en) * | 2014-10-20 | 2016-04-27 | 乐金显示有限公司 | Display apparatus |
| CN105788470A (en) * | 2014-12-25 | 2016-07-20 | 昆山维信诺科技有限公司 | Circular display screen and manufacturing method of circular display screen |
| CN105810710A (en) * | 2014-12-31 | 2016-07-27 | 昆山国显光电有限公司 | OLED device and preparing method thereof |
| CN106409867A (en) * | 2015-07-29 | 2017-02-15 | 乐金显示有限公司 | Organic light emitting display device |
| CN205334901U (en) * | 2016-01-25 | 2016-06-22 | 成都京东方光电科技有限公司 | Dysmorphism display panel and display device |
| CN105911744A (en) * | 2016-06-29 | 2016-08-31 | 上海天马微电子有限公司 | Display panel and display device |
| CN106856204A (en) * | 2016-12-28 | 2017-06-16 | 上海天马有机发光显示技术有限公司 | A kind of OLED display panel, display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108039358A (en) | 2018-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11637252B2 (en) | Display apparatus including a substrate having a hole | |
| US11737316B2 (en) | Display panels and manufacturing methods thereof | |
| US11296151B2 (en) | Display panel | |
| US20220029125A1 (en) | Light-transmitting display panel, display panel, and display device | |
| US10373985B2 (en) | Display device using micro light emitting diode | |
| KR102375275B1 (en) | Display device with integrated touch screen and method for manufacturing the same | |
| KR102631253B1 (en) | flexible display device | |
| EP2939286B1 (en) | Transparent organic light emitting display device and method for manufacturing the same | |
| US20210141304A1 (en) | Mask strips, array substrates and display screens | |
| KR20220162837A (en) | Display panel, manufacturing method of display panel, and display device | |
| CN112470287B (en) | Display substrate and related device | |
| KR20220162836A (en) | Light transmission display module, display panel and manufacturing method thereof | |
| KR20150087706A (en) | Display apparatus | |
| WO2018082328A1 (en) | Organic light-emitting diode display panel, fabrication method therefor and mask | |
| CN111293158A (en) | Display panel and display device | |
| CN116322204A (en) | Array substrate and display device | |
| KR20190073636A (en) | Organic light emitting display device | |
| CN110323257A (en) | Array substrate, display panel and display device | |
| US11335748B2 (en) | Transparent OLED substrate, display panel and OLED substrate | |
| CN110767826A (en) | Display panel and display terminal | |
| CN114039013A (en) | Display panel, preparation method thereof and display device | |
| US11974482B2 (en) | Display substrate and related devices | |
| CN108039358B (en) | Display panel and display device | |
| CN113097414A (en) | OLED display panel, preparation method thereof and display device | |
| CN114639713A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |