CN111580695A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN111580695A CN111580695A CN202010356931.0A CN202010356931A CN111580695A CN 111580695 A CN111580695 A CN 111580695A CN 202010356931 A CN202010356931 A CN 202010356931A CN 111580695 A CN111580695 A CN 111580695A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention discloses a display panel, a manufacturing method thereof and a display device, relating to the technical field of display and comprising the following steps: a substrate base plate; an array layer located on one side of the substrate base plate; the light-emitting element is positioned on one side of the array layer, which is far away from the substrate base plate; the first transparent electrode layer is positioned on the surface of one side of the light-emitting element, which is far away from the substrate base plate; the insulating layer is positioned on one side, far away from the substrate base plate, of the first transparent electrode layer and comprises a plurality of first through holes, and the first through holes penetrate through the insulating layer along the direction vertical to the substrate base plate and expose at least part of the first transparent electrode layer; and the touch electrodes are positioned on one side of the first transparent electrode layer, which is far away from the substrate base plate, and at least two touch electrodes are electrically connected with the same first transparent electrode layer through the first through holes. Therefore, the first transparent electrode layer positioned on the surface of the light-emitting element far away from the substrate is used as the bridge-crossing connecting layer of the touch electrode, so that the film layer structure of the display panel is simplified, and the thickness of the display panel is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
With the development of display technology, display panels integrated with touch control functions become a hot point and a mainstream technical trend of research. In recent years, touch screen technology has gradually become a mainstream technology of mobile terminals and the like instead of key technology. The touch screen technology is a technology in which when a finger, a pen, or the like touches a touch screen mounted on the front end of a display, the touched position is detected and sent to a CPU, thereby determining input information. At present, the application range of the touch screen is very wide, and the main products include touch mobile phones, notebook computers and other mobile terminals, and human-computer display interfaces in the industrial automation industry.
The touch screen can be divided into: an Add On Mode Touch Panel (Add On Touch Panel), an overlay surface Touch Panel (On Cell Touch Panel), and an In Cell Touch Panel (In Cell Touch Panel). Wherein, embedded touch-sensitive screen is the inside that sets up display panel with the touch-control electrode of touch-sensitive screen, compares outer hanging touch-sensitive screen and cover surface formula touch-sensitive screen, can attenuate the holistic thickness of module, the cost of manufacture that again can greatly reduced touch-sensitive screen. In the existing embedded touch screen, although the touch electrode is integrated inside the display panel, the film structure is complex, so that the thickness of the display panel is difficult to further reduce.
Disclosure of Invention
In view of this, the present invention provides a display panel and a display device, in which the first transparent electrode layer located on the surface of the light emitting element away from the substrate is used as a bridge-crossing connection layer of the touch electrode, which is beneficial to simplifying the film structure of the display panel and reducing the thickness of the display panel.
In a first aspect, the present application provides a display panel comprising:
a substrate base plate;
the array layer is positioned on one side of the substrate base plate;
the light-emitting element is positioned on one side of the array layer, which is far away from the substrate base plate;
the first transparent electrode layer is positioned on the surface of one side of the light-emitting element, which is far away from the substrate base plate;
the insulating layer is positioned on one side, far away from the substrate base plate, of the first transparent electrode layer and comprises a plurality of first through holes, and the first through holes penetrate through the insulating layer along the direction perpendicular to the substrate base plate and expose at least part of the first transparent electrode layer;
and the touch electrodes are positioned on one side of the insulating layer, which is far away from the substrate base plate, and at least two touch electrodes are electrically connected with the same first transparent electrode layer through the first through holes.
In a second aspect, the present application provides a method for manufacturing a display panel, including:
providing a substrate base plate;
forming an array layer on one side of the substrate base plate;
arranging a light-emitting element on one side of the array layer far away from the substrate base plate;
forming a first transparent electrode layer on the surface of one side of the light-emitting element, which is far away from the substrate;
forming an insulating layer on one side of the first transparent electrode layer, which is far away from the substrate base plate;
forming a plurality of first via holes on the insulating layer, wherein the first via holes penetrate through the insulating layer along a direction perpendicular to the substrate and expose at least part of the first transparent electrode layer;
and forming a plurality of touch electrodes on one side of the first transparent electrode layer, which is far away from the substrate base plate, so that at least two touch electrodes are electrically connected with the same first transparent electrode layer through the first through hole.
In a third aspect, the present application further provides a display device including the display panel provided in the present application.
Compared with the prior art, the display panel, the manufacturing method thereof and the display device provided by the invention at least realize the following beneficial effects:
in the display panel, the manufacturing method thereof and the display device provided by the invention, the first transparent electrode layer is introduced on the surface of one side of the light-emitting element, which is far away from the substrate base plate, and the insulating layer, which is arranged on one side of the first transparent electrode layer, which is far away from the substrate base plate, is provided with a plurality of first through holes, and the first through holes penetrate through the insulating layer along the direction vertical to the substrate base plate and expose at least part of the first electrode layer. The surface of the light-emitting element far from the substrate is not provided with the insulating filling layer, but is directly provided with the first transparent electrode layer, the touch electrodes are separated from the first transparent electrode layer by the insulating layer, at least two touch electrodes in the invention are electrically connected with the same first transparent electrode layer through the first via hole, which is equivalent to the mode that the first transparent electrode layer arranged on the surface of one side of the light-emitting element far from the substrate is used as a bridge-crossing connecting layer of the touch electrodes, compared with the mode that the insulating filling layer is firstly arranged on one side of the light-emitting element far from the substrate, and then the touch layer is manufactured on one side of the insulating filling layer far from the light-emitting element, the application omits the insulating filling layer with larger thickness between the touch layer and the light-emitting element in the prior art, greatly simplifies the film layer structure of the touch electrodes introduced into the display panel, thereby being beneficial to further, the requirement of thinning the display panel is met.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a cross-sectional view of a prior art display panel;
fig. 2 is a top view of a display panel according to an embodiment of the present disclosure;
FIG. 3 is an AA' cross-sectional view of the display panel of FIG. 2;
fig. 4 is a top view of a touch electrode in a display panel according to an embodiment of the present disclosure;
FIG. 5 is an AA' cross-sectional view of the display panel of FIG. 2;
fig. 6 is a top view of a first transparent electrode layer and a first via hole in a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a light emitting element in a display panel according to an embodiment of the present disclosure;
FIG. 8 is a cross-sectional view of a BB' of the display panel of FIG. 2;
FIG. 9 is a cross-sectional view of the display panel of FIG. 2, taken along line CC';
FIG. 10 is a diagram illustrating a relative position of the light emitting device and the auxiliary via;
fig. 11 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present disclosure;
fig. 12 is a schematic view of a display device according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a cross-sectional view of a display panel 300 in the prior art, where the display panel 300 is a touch display panel, the touch display panel includes a substrate 301, a light emitting device 303 and a touch layer 304, a first insulating filling layer 308 is disposed on a side of the light emitting device 303 away from the substrate 301, a surface of the first insulating filling layer 308 away from the light emitting device 303 forms a planarized surface, and the touch layer 304 is disposed on a surface of the first insulating filling layer 308 away from the substrate 301. The touch layer 304 includes a first electrode layer 305, a second electrode layer 307, and a second insulating filling layer 306 located between the first electrode layer 305 and the second electrode layer 307, wherein the first electrode layer 305 is located on a side of the second insulating filling layer 306 away from the substrate base 301. It can be seen that, when the touch layer 304 is integrated in the display panel 300 in the prior art, two insulating filling layers need to be formed between the first electrode layer 305 and the light emitting element 303, and since the first insulating filling layer 308 needs to form a planarized surface on the side of the light emitting element 303 away from the substrate base 301, the thickness of the first insulating filling layer 308 needs to be greater than that of the light emitting element 303 in the direction perpendicular to the substrate base 301, and therefore, after the touch layer 304 is introduced, the overall thickness of the display panel 300 is difficult to be further reduced.
In view of this, the present invention provides a display panel and a display device, in which the first transparent electrode layer located on the surface of the light emitting element away from the substrate is used as a bridge-crossing connection layer of the touch electrode, which is beneficial to simplifying the film structure of the display panel and reducing the thickness of the display panel.
The invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 2 is a top view of a display panel according to an embodiment of the present invention, fig. 3 is an AA' cross-sectional view of the display panel in fig. 2, please refer to fig. 2 and fig. 3, a display panel 100 according to the present invention includes:
a base substrate 10;
an array layer 20 located at one side of the substrate base plate 10;
a light emitting element 30 located on a side of the array layer 20 away from the substrate base plate 10;
a first transparent electrode layer 41 on a surface of the light emitting element 30 on a side away from the base substrate 10;
the insulating layer 50 is positioned on one side, away from the substrate base plate 10, of the first transparent electrode layer 41, the insulating layer 50 comprises a plurality of first through holes 61, and the first through holes 61 penetrate through the insulating layer 50 in a direction perpendicular to the substrate base plate 10 and expose at least part of the first transparent electrode layer 41;
the plurality of touch electrodes 51 are located on one side of the first transparent electrode layer 41 away from the substrate 10, and at least two touch electrodes 51 are electrically connected with the same first transparent electrode layer 41 through the first via holes 61.
It should be noted that fig. 2 only schematically illustrates one shape of the display panel 100, and in some other embodiments of the present application, the display panel 100 may be embodied as a circle, an ellipse, or another irregular structure besides a rectangle, and the present application does not specifically limit the shape of the display panel 100. The light-emitting elements 30 shown on the display panel in fig. 2 are also only schematic, and do not represent actual sizes, numbers, and shapes. It should be noted that, in order to clearly embody the present invention, only the light emitting element 30 and the substrate board 10 are shown in the top view of fig. 2, and other components are not shown. The cross-sectional view shown in fig. 3 is also only schematic for the film layers relevant to the present invention, and does not represent the actual structure of each film layer, for example, the array layer 20 may include a plurality of metal film layers arranged in different layers, which is not shown in detail herein. Fig. 3 also merely illustrates the relative positional relationship between the film layers, and does not represent actual dimensions.
Specifically, with continued reference to fig. 2 and fig. 3, in the display panel 100 provided by the present invention, the first transparent electrode layer 41 is introduced on the surface of the light emitting element 30 on the side away from the substrate 10, and a plurality of first via holes 61 are disposed on the insulating layer 50 disposed on the side of the first transparent electrode layer 41 away from the substrate 10, where the first via holes 61 penetrate through the insulating layer 50 in the direction perpendicular to the substrate 10 and expose at least a portion of the first transparent electrode layer 41. In the present application, an insulating filling layer is not disposed on the surface of the light emitting element 30 away from the substrate 10, but the first transparent electrode layer 41 is directly disposed, and the touch electrodes 51 are separated from the first transparent electrode layer 41 by the insulating layer 50, at least two touch electrodes 51 in the present invention are electrically connected to the same first transparent electrode layer 41 through the first via holes 61, which is equivalent to using the first transparent electrode layer 41 disposed on the surface of the light emitting element 30 away from the substrate 10 as a bridge-crossing connection layer of the touch electrodes 51, compared with a method of disposing the insulating filling layer on the side of the light emitting element 30 away from the substrate 10 and then fabricating the touch layer on the side of the insulating filling layer away from the light emitting element 30, the present application omits an insulating filling layer with a larger thickness between the touch layer and the light emitting element in the prior art, and greatly simplifies the film structure of the display panel 100 after introducing the touch electrodes 51, therefore, the thickness of the display panel 100 can be further reduced, and the requirement for thinning the display panel 100 can be satisfied.
Fig. 4 is a top view of a touch electrode in the display panel 100 according to an embodiment of the present disclosure, please refer to fig. 4, alternatively, the display panel 100 includes a plurality of first touch units 70 and a plurality of second touch units 80 disposed on the same layer, and the first touch units 70 and the second touch units 80 are insulated from each other; the first touch unit 70 includes a plurality of first touch electrodes 71, and each first touch electrode 71 in the same first touch unit 70 is arranged along a first direction; the second touch unit 80 includes a plurality of second touch electrodes 81, each second touch electrode 81 in the same second touch unit 80 is arranged along a second direction, and the first direction and the second direction are crossed;
the touch electrode 51 mentioned in the present application includes the first touch electrode 71 and the second touch electrode 81; in the same first touch unit 70, two first touch electrodes 71 adjacent to each other in the first direction are electrically connected to the same first transparent electrode layer 41 through the first via hole 61; in the same second touch unit 80, two second touch electrodes 81 adjacent to each other in the second direction are electrically connected by a connection portion 82, and the connection portion 82 and the second touch electrode 81 are disposed on the same layer.
Specifically, fig. 4 shows an embodiment of providing a mutual capacitive touch electrode 51 in the display panel 100, optionally, the first touch unit 70 is used as a touch driving unit, the second touch unit 80 is used as a touch sensing unit, and in a touch stage of the display panel 100, when a touch subject touches the display panel 100, a coupling capacitance is formed between the touch subject and the touch sensing unit and the touch driving unit, resulting in a reduction in a coupling capacitance between the touch driving unit and the touch sensing unit, and a touch position can be known according to a change in the coupling capacitance between the touch sensing unit and the touch driving unit. In the present invention, the first touch unit 70 and the second touch unit 80 are disposed on the same layer, and are embodied as a film layer on which the touch electrode 51 is disposed in fig. 3. The first touch unit 70 includes a plurality of first touch electrodes 71 electrically connected to each other, and the second touch unit 80 includes a plurality of second touch electrodes 81 electrically connected to each other. Referring to fig. 3 and 4, in the same first touch unit 70, two first touch electrodes 71 adjacent to each other along the first direction are electrically connected to the same first transparent electrode layer 41 through first vias 61; in the same second touch unit 80, two second touch electrodes 81 adjacent to each other in the second direction are electrically connected by a connection portion 82, and the connection portion 82 is disposed on the same layer as the first touch electrode 71 and the second touch electrode 72. Referring to fig. 3 and 4, an orthogonal projection of the connection portion 82 on the plane of the substrate 10 intersects an orthogonal projection of the first transparent electrode layer 41 on the plane of the substrate 10. According to the application, the first transparent electrode layer 41 is used as a bridge-crossing connection layer of the first touch electrode 71 in the first touch unit 70, so that the possibility that the touch function cannot be normally realized due to the electric connection formed between the first touch unit 70 and the second touch unit 80 when the first touch unit 70 and the second touch unit 80 are arranged on the same layer is effectively avoided, and moreover, the touch performance of the display panel 100 can be ensured by arranging the first touch unit 70 and the second touch unit 80 on the same layer, and the production yield of products can be improved.
In an alternative embodiment of the present invention, fig. 5 is an AA' cross-sectional view of the display panel 100 in fig. 2, the display panel 100 further includes a second transparent electrode layer 42, the second transparent electrode layer 42 is located on the surface of the array layer 20 away from the substrate 10, and an orthogonal projection of the second transparent electrode layer 42 on the substrate 10 is located between orthogonal projections of two adjacent light-emitting elements 30 on the plane of the substrate 10; the second transparent electrode layer 42 is insulated from the first transparent electrode layer 41.
Referring to fig. 5, in the surface of the array substrate on the side away from the substrate 10, the second transparent electrode layer 42 is introduced to the portion where no light-emitting element 30 is disposed, and from the cross-sectional structure shown in fig. 5, the second transparent electrode layer 42 is located between the orthographic projections of two adjacent light-emitting elements 30 on the plane of the substrate 10, and the first transparent electrode layer 41 and the second transparent electrode layer 42 are disconnected, and the introduction of the second transparent electrode layer 42 does not affect the bridge-crossing connection between the two touch electrodes 51. In addition, the second transparent electrode layer 42 is introduced on the surface of the array layer 20 away from the substrate 10, and the second transparent electrode layer 42 can also play a certain role in protecting the array layer 20.
In an alternative embodiment of the present invention, with continued reference to fig. 5, the second transparent electrode layer 42 on the surface of the array layer 20 on the side away from the substrate base plate 10 is connected to a fixed potential to form a shielding layer.
Generally, a transistor and a signal trace structure are disposed in the array layer 20 of the display panel 100, and during a display process of the display panel 100, an electrical signal exists on the transistor and the signal trace; during the touch process of the display panel 100, an electrical signal is also present on the touch electrode 51. When the second transparent electrode layer 42 on the surface of the array layer 20 away from the substrate base plate 10 is connected to a fixed potential, the second transparent electrode layer 42 forms a shielding layer, and in the direction perpendicular to the plane of the substrate base plate 10, the shielding layer isolates the touch electrode 51 from the array layer 20, so that mutual interference between the electric signal of the array layer 20 and the electric signal on the touch electrode 51 is avoided, and therefore, the touch reliability of the display panel 100 in the touch stage is improved, and the display reliability of the display panel 100 in the display stage is also improved.
In an alternative embodiment of the present invention, with continued reference to fig. 5, the second transparent electrode layer 42 and the first transparent electrode layer 41 are disposed in the same layer and the same material.
Specifically, in the present application, the second transparent electrode layer 42 and the first transparent electrode layer 41 are disposed in the same layer, which means that the two are formed in the same production process at the same time, and do not mean that the two are located at the same height, in the present application, since the surface of the array layer 20 on the side away from the substrate 10 is a planar structure, when the light emitting element 30 is disposed on the surface of the array layer 20 on the side away from the substrate 10, the surface of the light emitting element 30 away from the substrate 10 and the surface of the array layer 20 on the side away from the substrate 10 have a height difference, that is, in the viewing angle shown in fig. 5, the surface of the light emitting element 30 away from the substrate 10 is higher than the surface of the array layer 20 away from the substrate 10, and when the first transparent electrode layer 41 and the second transparent electrode layer 42 are formed in the same production process at the same time, the first transparent electrode layer 41 and the second transparent electrode layer 42 formed in the same layer will be located on the surface of the light emitting element 30 away from Away from the surface of the substrate 10. When the first transparent electrode layer 41 and the second transparent electrode layer are arranged on the same layer and made of the same material, independent manufacturing processes do not need to be respectively introduced into the first transparent electrode layer 41 and the second transparent electrode layer 42, and the first transparent electrode layer 41 and the second transparent electrode layer 42 can be manufactured and formed simultaneously in the same production process, so that the second transparent electrode layer 42 is introduced as a shielding layer to improve the display reliability and the touch reliability of the display panel 100, the production process of the display panel 100 is facilitated to be simplified, and the production efficiency of the display panel 100 is improved.
It should be noted that the drawings of the present invention only illustrate the array layer 20, and do not represent the actual film structure of the array layer, and in fact, the array layer 20 may include a plurality of metal film layers and insulating layers, and the metal film layers may include, for example, a first metal layer and a second metal layer which are arranged in an insulating manner. The array layer 20 is typically provided with a plurality of thin film transistors, and optionally, gates of the thin film transistors are located on a first metal layer, and sources and drains of the thin film transistors are located on a second metal layer, the second metal layer being located on a side of the first metal layer away from the substrate. Optionally, the array layer further includes a passivation layer or a planarization layer, the passivation layer or the planarization layer is located on the side of the second metal layer away from the substrate, and the surface of the array layer 20 away from the substrate 10 mentioned in this application refers to the surface of the passivation layer or the planarization layer away from the substrate in the array layer.
In an alternative embodiment of the present invention, the first transparent electrode layer 41 comprises indium tin oxide. Indium Tin Oxide (ITO) is a nano indium Tin metalOxide having excellent conductivity and light transmittance, and optionally, the first transparent electrode layer 41 and the second transparent electrode layer 42 In this application may be formed of In doped with Sn2O3The film has light transmittance of over 90% and excellent conductivity. Therefore, when the first transparent electrode layer 41 with better conductivity is introduced, the reliability of the electrical connection between the touch electrodes 51 is improved, and the light transmittance of the first transparent electrode layer 41 and the light transmittance of the second transparent electrode layer 42 are both high, so that the overall transmittance of the display panel 100 in the present application is improved.
In an alternative embodiment of the present invention, with continued reference to fig. 5, in a direction perpendicular to the base substrate 10, the first transparent electrode layer 41 has a thickness D0,
specifically, the present application sets the thickness of the first transparent electrode layer 41 to be
When the particle size is larger than or equal to 0.1 μm, D0 is smaller than or equal to 0.2 μm. The height of the light emitting element 30 in the direction perpendicular to the base substrate 10 is generally about 10 μm, that is, in the direction perpendicular to the base substrate 10, the thickness of the first transparent electrode layer 41 and the second transparent electrode layer 42 will be much smaller than the height of the light emitting element 30, when the first transparent electrode layer 41 and the second transparent electrode layer 42 are simultaneously formed by the same production process, since the height difference between the surface of the light emitting element 30 far from the substrate base plate 10 and the surface of the array layer 20 far from the substrate base plate 10 is much larger than the thickness of the first transparent electrode layer 41 and the second transparent electrode layer 42, the first transparent electrode layer 41 on the surface of the light emitting element 30 far from the substrate base plate 10 and the second transparent electrode layer 42 on the surface of the array layer 20 far from the substrate base plate 10 are inevitably disconnected, and no electrical connection is formed, so that it is beneficial to ensure that the introduction of the second transparent electrode layer 42 does not touch the first transparent electrode layer 41 as a bridge connection layer.The reliability of the electrical connection between the electrodes 51 is affected.
In addition, the thickness D0 of the first transparent electrode layer 41 is set to be equal to or greater than
In this case, it is beneficial to avoid the influence on the conductivity of the first transparent electrode layer 41 caused by the over-small thickness of the first transparent electrode layer 41, so as to facilitate the improvement of the reliability of the electrical connection between the touch electrodes 51 when the first transparent electrode layer 41 is used as the bridge-crossing connection layer. In addition, the thickness D0 of the first transparent electrode layer 41 is set to be equal to or less than
In the meantime, it is favorable to avoid that the light transmittance of the first transparent electrode layer 41 is reduced due to the excessively large thickness of the first transparent electrode layer 41 to affect the light transmittance of the display panel 100, so that the light transmittance when the first transparent electrode layer 41 and the second transparent electrode layer 42 are introduced into the display panel 100 is favorably improved.
In an alternative embodiment of the invention, fig. 6 is a top view of the first transparent electrode layer 41 and the first via 61 in the display panel 100 provided in the embodiment of the present application, and the light emitting element is not shown, and in fact, in the top view structure, the light emitting element overlaps the first transparent electrode layer 41. Referring to fig. 6, at least two first via holes 61 respectively expose two ends of the same first transparent electrode layer 41, and two touch electrodes 51 are respectively connected to two ends of the same first transparent electrode layer 41 through the first via holes 61.
Specifically, referring to fig. 5 and fig. 6, the orthographic projections of the two first vias 61 on the plane of the substrate 10 are located in the range defined by the orthographic projection of the same light emitting element 30 on the plane of the substrate 10 and located at two ends of the entire projection of the same light emitting element 30 on the plane of the substrate 10, that is, the first transparent electrode layer 41 on one light emitting element 30 corresponds to the two first vias 61. The two first via holes 61 respectively expose two ends of the same first transparent electrode layer 41, and the two touch electrodes 51 are respectively electrically connected with two ends of the same first transparent electrode layer 41 through the first via holes 61, so that the two touch electrodes 51 are electrically connected. Moreover, when the orthographic projections of the two first vias 61 on the substrate base plate 10 are arranged at the two ends of the whole projection of the same light-emitting element 30 on the plane of the substrate base plate 10, in the process of forming the first vias 61 on the insulating layer 50, the positions of the two first vias 61 can be determined by taking the edges of the two ends of the light-emitting element 30 as references, so that the accuracy of the position arrangement of the first vias 61 is improved.
In an alternative embodiment of the present invention, fig. 7 is a schematic structural diagram of a light emitting element 30 in a display panel 100 provided in the embodiment of the present application, please refer to fig. 7, in which the light emitting element 30 includes a light emitting body 33 and a first pole 31 and a second pole 32 electrically connected to the light emitting body 33, the first pole 31 and the second pole 32 are located on a side of the light emitting body 33 facing a substrate; referring to fig. 6, the orthographic projections of the first vias 61 corresponding to the same light emitting device 30 on the substrate 10 are arranged along the length direction of the light emitting device 30.
Specifically, with continued reference to fig. 7, the light emitting element 30 includes a light emitting body 33 and a first electrode 31 and a second electrode 32 electrically connected to the light emitting body 33, and optionally, the light emitting body 33 includes a P-type semiconductor layer electrically connected to the first electrode 31, an N-type semiconductor layer electrically connected to the N-type semiconductor layer, and a light emitting layer (not shown in the figure) located between the P-type semiconductor layer and the N-type semiconductor layer, wherein the P-type semiconductor layer and the N-type semiconductor layer of the light emitting body 33 are driven by the first electrode 31 and the second electrode 32 to provide a voltage signal to the P-type semiconductor layer and the N-type semiconductor layer, and the P-type semiconductor layer and the N-type semiconductor layer are driven by the voltage signal to cause the light emitting layer. Referring to fig. 6 and 7, alternatively, the orthographic projection of the light emitting element 30 on the plane of the substrate 10 is a rectangular structure, and the first pole 31 and the second pole 32 in the light emitting element 30 are arranged in the length direction of the rectangular structure. Particularly, in the present application, when the orthographic projection of the first and second electrodes on the substrate 10 of the first via hole 61 corresponding to the light emitting element 30 is arranged along the length direction of the light emitting element 30, the space in the length direction of the light emitting element 30 is larger than the space in the width direction, so that when the first via holes 61 are arranged along the length direction of the light emitting element 30, the first via holes 61 corresponding to the same light emitting element 30 have more arrangement spaces in the arrangement direction, and the problem that the size of the first via hole 61 is smaller due to the smaller arrangement space, which affects the reliability of the electrical connection between the touch electrode 51 and the first transparent electrode layer 41, is avoided. Therefore, such a layout mode can provide a larger space for the arrangement of the first via hole 61, thereby being beneficial to increasing the size of the first via hole 61, being beneficial to improving the reliability of the electrical connection between the touch electrode 51 and the first transparent electrode layer 41, and being beneficial to improving the touch reliability of the touch electrode 51.
In an alternative embodiment of the present invention, referring to FIG. 6, the minimum aperture of the first via 61 is D1, D1 ≧ 5 μm. Considering that the aperture of the first via 61 may not be fixed, for example, in fig. 5, the aperture of the first via 61 is gradually changed, the aperture of the first via 61 is gradually increased from a side close to the first transparent electrode layer 41 to a side far from the first transparent electrode layer 41, and a portion of the first via 61 corresponding to the minimum aperture is in contact with the first transparent electrode layer 41, and therefore, the size of the minimum aperture is closely related to the reliability of the electrical connection between the electrode layer and the first transparent electrode layer 41.
Specifically, the minimum aperture of the first via hole 61 corresponding to the light emitting element 30 is set to be greater than or equal to 5 μm, which is beneficial to avoiding that the reliability of the electrical connection between the touch electrode 51 and the first transparent electrode layer 41 is weakened due to the undersize aperture of the first via hole 61. In addition, when the orthogonal projection of the light emitting element 30 to the base substrate 10 is square, the length of the individual light emitting element 30 is set to 25 μm or more and the width thereof is set to 10 μm or more. When the minimum aperture of the first via hole 61 is set to be 5 μm or more, the arrangement space of the two first via holes 61 in the width direction of the light emitting element 30 is insufficient, and only the aperture of the first via hole can be compressed; however, the two first via holes 61 have sufficient arrangement space in the length direction of the light emitting element, and therefore, the first via holes are arranged along the length direction of the light emitting element, which not only meets the arrangement requirement of at least two first via holes 61 on the same first transparent electrode layer 41, and is beneficial to realizing reliable electrical connection between the touch electrode 51 and the first transparent electrode layer 41, thereby improving the touch reliability of the display panel 100.
In an alternative embodiment of the present invention, fig. 8 is a BB' cross-sectional view of the display panel 100 shown in fig. 2, please refer to fig. 8, in which the insulating layer 50 further includes a plurality of second vias 62, the second vias 62 penetrate the insulating layer 50 in a direction perpendicular to the substrate 10 and expose at least a portion of the first transparent electrode layer 41; the orthographic projection of each second via hole 62 corresponding to the same transparent electrode layer on the substrate 10 is located within the orthographic projection range of the same touch electrode 51 on the substrate 10.
Specifically, fig. 8 shows a case where a second via 62 is disposed on the insulating layer 50, where the second via 62 is different from the first via 61 in that an orthogonal projection of the second via 62 on the substrate 10 is located within an orthogonal projection range of the same touch electrode 51 on the substrate 10, and orthogonal projections of two first vias 61 corresponding to the same light emitting element 30 on the substrate 10 are respectively located within orthogonal projection ranges of different touch electrodes 51 on the substrate 10 (see fig. 5), that is, the first vias 61 are used for electrically connecting the two different touch electrodes 51 with the same first transparent electrode layer 41, and the second vias 62 are only used for connecting the same touch electrode 51. Assuming that only the first via 61 is disposed on the insulating layer 50, and the first via 61 is used to electrically connect the two touch electrodes 51 and the first transparent electrode layer 41, there is a case that the corresponding position of a part of the light emitting elements 30 does not include a via. When the first via hole 61 is correspondingly disposed above a part of the light emitting elements 30 (on a side away from the substrate 10), and the first via hole 61 is not disposed above a part of the light emitting elements 30, when the display panel 100 emits light, the light transmittance between the light emitting elements 30 disposed with the first via hole 61 and the light emitting elements 30 not disposed with the via holes will be different, and thus the phenomenon of uneven brightness may occur on the display panel 100. In the present application, when the second via hole 62 is introduced above a part of the light emitting element 30, it is beneficial to improve the phenomenon of uneven brightness of the display panel 100 when the light emitting element 30 emits light, so as to be beneficial to improving the display effect of the display panel 100. In addition, the second via hole 62 is introduced above a part of the light emitting element 30, so that when the part of the touch electrode 51 is electrically connected to the first transparent electrode layer 41 through the second via hole 62, the touch electrode 51 is connected to the first transparent electrode layer 41 in parallel, which is favorable for reducing the impedance of the touch electrode 51 and improving the touch sensitivity of the touch electrode 51.
In an alternative embodiment of the present invention, the insulating layer 50 further includes a plurality of third vias 63, the third vias 63 penetrating the insulating layer 50 in a direction perpendicular to the substrate base plate 10 and exposing at least a portion of the first transparent electrode layer 41; the orthographic projection of each third via 63 on the substrate base 10 does not overlap the orthographic projection of the touch electrode 51 on the substrate base 10.
Specifically, fig. 9 is a CC' cross-sectional view of the display panel 100 in fig. 2, in this embodiment, a third via 63 is introduced into the insulating layer 50, and the difference between the third via 63 and the first via 61 and the second via 62 is that an orthographic projection of the third via 63 on the substrate 10 does not overlap with the touch electrode 51, and an orthographic projection of the first via 61 and the orthographic projection of the second via 62 on the substrate 10 overlap. Considering that when the touch electrode 51 is introduced on the display panel 100, the orthographic projection of the touch electrode 51 on the substrate 10 does not necessarily cover the orthographic projection of all the light-emitting elements 30 on the substrate 10, that is, when a part of the light-emitting elements 30 is not provided with the touch electrode 51, for example, the light-emitting elements 30 shown in fig. 9 are not provided with the touch electrode, when no via hole is provided above the part of the light-emitting elements 30, the luminance displayed on the display panel 100 is different from that displayed on the display panel 100 when the part of the light-emitting elements 30 emit light and the light-emitting elements 30 provided with the via holes emit light, and therefore, the display panel 100 may have uneven display luminance, and therefore, when the third via hole 63 is also introduced above the part of the light-emitting elements 30, the present application is also beneficial to improving the uneven luminance of the display panel 100 when the light-emitting elements 30 emit light, thereby being beneficial to improving the display effect of the display panel 100.
In an alternative embodiment of the invention, please refer to fig. 5, fig. 8, fig. 9 and fig. 10, wherein fig. 10 shows a relative position relationship diagram of the light emitting element 30 and the auxiliary via 60, it should be noted that, in order to clearly show the relationship of the light emitting element 30 of the auxiliary via 60, the first transparent electrode layer on the light emitting element 30 is not shown in fig. 10. The insulating layer 50 includes a plurality of auxiliary vias 60, the auxiliary vias 60 include the first via 61, the second via 62, and the third via 63, and the auxiliary vias are disposed on the surfaces of the first transparent electrode layers 41 corresponding to the light emitting elements 30, which are away from the substrate board 10.
Specifically, the first via hole 61, the second via hole 62, and the third via hole 63 are collectively referred to as auxiliary via holes, and when the auxiliary via holes 60 are disposed on the sides of the first transparent electrode layer 41 corresponding to each light emitting element 30 away from the substrate 10, light emitted by each light emitting element 30 passes through the auxiliary via holes 60 when the light emitting element 30 emits light, so that the luminance of the display panel 100 in the region corresponding to each light emitting element 30 is balanced, and the uniformity of the display luminance of the display panel 100 is improved.
In an alternative embodiment of the present invention, please continue to refer to fig. 10, the number of the auxiliary vias 60 corresponding to each light emitting element 30 is the same. Specifically, when the same number of auxiliary via holes 60 are disposed above each light emitting element 30, corresponding to fig. 10, each light emitting element 30 corresponds to two auxiliary via holes, and light emitted by each light emitting element 30 passes through the same number of auxiliary via holes and then is emitted, so that the luminance of the display panel 100 in the region corresponding to each light emitting element 30 is further balanced, and further, the uniformity of the display luminance of the display panel 100 is further improved, and the display effect of the display panel 100 is improved.
It should be noted that, the embodiment shown in fig. 10 shows a case where two auxiliary vias are provided for each light emitting element 30, and two auxiliary vias corresponding to the same light emitting element 30 are respectively provided at two ends of the light emitting element 30 along the length direction thereof, in some other embodiments of the present application, the number of the auxiliary vias corresponding to the same light emitting element 30 may also be 3 or more, which is not specifically limited in the present application. When more than two first via holes 61 are formed above the same light emitting element 30, the reliability of the electrical connection between the touch electrode 51 and the same first transparent electrode layer is improved; when more than two second via holes 62 are disposed above the same light emitting element 30, the impedance of the touch electrode is further reduced, and the touch sensitivity of the touch electrode is improved.
In an alternative embodiment of the present invention, with continued reference to fig. 10, the shape and area of the orthographic projection of the auxiliary via 60 on the substrate base plate 10 are the same. The quantity, the shape, the area of the supplementary via hole 60 that sets up above the light emitting component 30 all set up to be the same for the rete structure that is located each light emitting component 30 top is the same, thereby be favorable to avoiding the rete differentiation design of light emitting component 30 top and lead to the display panel to appear showing the inhomogeneous phenomenon of luminance in different light emitting component 30 corresponding regions, therefore be favorable to further promoting display panel's the demonstration luminance homogeneity, promote display panel's display effect.
In an alternative embodiment of the present invention, the light emitting element 30 is a Micro LED, a Mini LED or a composite LED. The composite type LED in the present application refers to a composite structure of at least two LEDs, and the LEDs herein may be Micro LEDs or Mini LEDs, for example. When the composite LED is disposed on the array layer 20, one side of each LED located in the same composite LED away from the array layer 20 is coplanar, so that the area of the surface of the composite LED away from the array layer 20 is larger than that of a single LED, and therefore, an enough space is provided above the composite LED to dispose the auxiliary via hole, which is beneficial to improving the reliability of the electrical connection between the two touch electrodes 51 and the first transparent electrode layer 41, and is also beneficial to reducing the impedance of the touch electrodes 51, and improving the touch sensitivity of the touch electrodes 51. In addition, the Micro LED and the Mini LED have the characteristics of high display brightness, good light emitting efficiency and low power consumption, so when the Micro LED and the Mini LED are applied to the display panel 100, the display brightness and the light emitting efficiency of the display panel 100 are improved, and the power consumption of the display panel 100 is reduced.
Based on the same inventive concept, the present application further provides a manufacturing method of the display panel 100 in any of the above embodiments, please refer to fig. 11 and fig. 3, wherein fig. 11 is a flowchart of the manufacturing method of the display panel 100 provided in the embodiment of the present application, and the manufacturing method includes:
s1, providing a substrate 10;
s2, forming an array layer 20 on one side of the base substrate 10;
s3, disposing the light emitting element 30 on the side of the array layer 20 away from the substrate 10;
s4, forming a first transparent electrode layer 41 on the surface of the light-emitting element 30 on the side away from the base substrate 10;
s5, forming an insulating layer 50 on the side of the first transparent electrode layer 41 away from the base substrate 10;
s6, forming a plurality of first via holes 61 on the insulating layer 50, the first via holes 61 penetrating the insulating layer 50 in a direction perpendicular to the substrate base plate 10 and exposing at least a portion of the first transparent electrode layer 41;
s7, forming a plurality of touch electrodes 51 on the side of the first transparent electrode layer 41 away from the substrate 10, so that at least two touch electrodes 51 are electrically connected to the same first transparent electrode layer 41 through the first vias 61.
Specifically, referring to fig. 3 and 11, in the manufacturing method of the display panel 100 provided in the present application, after the light emitting element 30 is disposed on the side of the array layer 20 away from the substrate 10, the first transparent electrode layer 41 is directly disposed instead of disposing the insulating filling layer on the surface of the light emitting element 30 away from the array layer 20, and the touch electrodes 51 are separated from the first transparent electrode layer 41 by the insulating layer 50, at least two touch electrodes 51 in the present invention are electrically connected to the same first transparent electrode layer 41 through the first via holes 61, which is equivalent to a method of using the first transparent electrode layer 41 disposed on the side of the light emitting element 30 away from the substrate 10 as a bridge-crossing connection layer of the touch electrodes 51, in which compared with a method of disposing the insulating filling layer on the side of the light emitting element away from the substrate and then fabricating the touch layer on the side of the insulating filling layer away from the light emitting element, the application omits the insulating filling layer with larger thickness between the touch layer and the light-emitting element in the prior art, greatly simplifies the film structure for introducing the touch electrode 51 into the display panel 100, thereby being beneficial to further thinning the thickness of the display panel 100 and meeting the thinning requirement of the display panel 100.
Optionally, in the step S3, referring to fig. 3, when the light emitting element 30 is disposed on the side of the array layer 20 away from the substrate 10, a height difference is formed between the surface of the light emitting element 30 away from the substrate 10 and the surface of the array layer 20 away from the substrate 10 along a direction perpendicular to the substrate 10;
in step S4, a first transparent electrode layer 41 is formed on the surface of the light emitting element 30 on the side away from the base substrate 10, specifically:
a transparent electrode layer is formed on the surfaces of the light emitting element 30 and the array layer 20 away from the substrate 10, and the transparent electrode layer is divided into a first transparent electrode layer 41 and a second transparent electrode layer 42 by a height difference, wherein the first transparent electrode layer 41 is located on the surface of the light emitting element 30 on the side away from the substrate 10, and the second transparent electrode layer 42 is located on the surface of the array layer 20 on the side away from the substrate 10.
Specifically, since the surface of the array layer 20 on the side away from the substrate base plate 10 is a planar structure, when the light emitting element 30 is disposed on the surface of the array layer 20 on the side away from the substrate base plate 10, the surface of the light emitting element 30 away from the array base plate and the surface of the array layer 20 on the side away from the substrate base plate 10 have a height difference, when the transparent electrode layer is formed on the surfaces of the light emitting element 30 and the array layer 20 away from the substrate base plate 10, the height difference between the light emitting element 30 and the array layer 20 divides the transparent electrode layer into two parts insulated from each other, one part of the surface is on the side of the light emitting element 30 away from the substrate base plate 10, and the first transparent electrode layer 41 is formed; the other part is located on the surface of the array layer 20 away from the substrate 10 to form the second transparent electrode layer 42, so that the first transparent electrode layer 41 and the second transparent electrode layer 42 are simultaneously manufactured in the same process, and the first transparent electrode layer 41 and the second transparent electrode layer 42 can be manufactured and formed in the same production process without introducing the manufacturing process into the first transparent electrode layer 41 and the second transparent electrode layer 42 respectively, thereby facilitating the simplification of the production process of the display panel 100 and improving the production efficiency of the display panel 100.
Based on the same inventive concept, the present application further provides a display device 200, and fig. 12 is a schematic diagram of the display device 200 provided in the embodiment of the present application, where the display device 200 includes the display panel 100 provided in any of the above embodiments of the present application. It should be noted that, for the embodiments of the display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the display panel 100, and repeated descriptions are omitted. The display device 200 provided by the present application may be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
In summary, the display panel, the manufacturing method thereof and the display device provided by the invention at least achieve the following beneficial effects:
in the display panel, the manufacturing method thereof and the display device provided by the invention, the first transparent electrode layer is introduced on the surface of one side of the light-emitting element, which is far away from the substrate base plate, and the insulating layer, which is arranged on one side of the first transparent electrode layer, which is far away from the substrate base plate, is provided with a plurality of first through holes, and the first through holes penetrate through the insulating layer along the direction vertical to the substrate base plate and expose at least part of the first electrode layer. The surface of the light-emitting element far from the substrate is not provided with the insulating filling layer, but is directly provided with the first transparent electrode layer, the touch electrodes are separated from the first transparent electrode layer by the insulating layer, at least two touch electrodes in the invention are electrically connected with the same first transparent electrode layer through the first via hole, which is equivalent to the mode that the first transparent electrode layer arranged on the surface of one side of the light-emitting element far from the substrate is used as a bridge-crossing connecting layer of the touch electrodes, compared with the mode that the insulating filling layer is firstly arranged on one side of the light-emitting element far from the substrate, and then the touch layer is manufactured on one side of the insulating filling layer far from the light-emitting element, the application omits the insulating filling layer with larger thickness between the touch layer and the light-emitting element in the prior art, greatly simplifies the film layer structure of the touch electrodes introduced into the display panel, thereby being beneficial to further, the requirement of thinning the display panel is met.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (19)
1. A display panel, comprising:
a substrate base plate;
the array layer is positioned on one side of the substrate base plate;
the light-emitting element is positioned on one side of the array layer, which is far away from the substrate base plate;
the first transparent electrode layer is positioned on the surface of one side of the light-emitting element, which is far away from the substrate base plate;
the insulating layer is positioned on one side, far away from the substrate base plate, of the first transparent electrode layer and comprises a plurality of first through holes, and the first through holes penetrate through the insulating layer along the direction perpendicular to the substrate base plate and expose at least part of the first transparent electrode layer;
and the touch electrodes are positioned on one side of the insulating layer, which is far away from the substrate base plate, and at least two touch electrodes are electrically connected with the same first transparent electrode layer through the first through holes.
2. The display panel according to claim 1, further comprising a second transparent electrode layer, wherein the second transparent electrode layer is located on a surface of the array layer away from the substrate base plate, and an orthogonal projection of the second transparent electrode layer on the substrate base plate is located between orthogonal projections of two adjacent light-emitting elements on a plane where the substrate base plate is located;
the second transparent electrode layer and the first transparent electrode layer are insulated from each other.
3. The display panel according to claim 2, wherein the second transparent electrode layer is connected to a fixed potential to form a shielding layer.
4. The display panel according to claim 2, wherein the second transparent electrode layer and the first transparent electrode layer are disposed in the same layer of the same material.
5. The display panel according to claim 1, wherein the first transparent electrode layer comprises indium tin oxide.
6. The display panel according to claim 1, wherein the first transparent electrode layer has a thickness D0 in a direction perpendicular to the substrate base plate,
7. the display panel according to claim 1, wherein at least two of the first via holes expose two ends of the same first transparent electrode layer, and the two touch electrodes are connected to two ends of the same first transparent electrode layer through the first via holes, respectively.
8. The display panel according to claim 7, wherein the light-emitting element includes a light-emitting body and a first pole and a second pole electrically connected to the light-emitting body, the first pole and the second pole being located on a side of the light-emitting body facing the substrate;
the orthographic projection of the first through holes corresponding to the same light-emitting elements on the substrate base plate is arranged along the length direction of the light-emitting elements.
9. The display panel of claim 1, wherein the first via has a minimum aperture of D1, D1 ≧ 5 μm.
10. The display panel according to claim 1, wherein the insulating layer further comprises a plurality of second vias penetrating the insulating layer in a direction perpendicular to the substrate base plate and exposing at least a portion of the first transparent electrode layer; the orthographic projection of each second through hole corresponding to the same transparent electrode layer on the substrate base plate is located in the orthographic projection range of the same touch electrode on the substrate base plate.
11. The display panel according to claim 10, wherein the insulating layer further comprises a plurality of third vias that penetrate the insulating layer in a direction perpendicular to the substrate base plate and expose at least a portion of the first transparent electrode layer; the orthographic projection of each third via hole on the substrate base plate is not overlapped with the orthographic projection of the touch electrode on the substrate base plate.
12. The display panel according to claim 11, wherein the insulating layer includes a plurality of auxiliary vias, the auxiliary vias include the first via, the second via, and the third via, and the auxiliary vias are disposed on surfaces of the first transparent electrode layers corresponding to the light emitting elements, the surfaces being away from the substrate base plate.
13. The display panel according to claim 11,
the number of the auxiliary via holes corresponding to the light emitting elements is the same.
14. The display panel according to claim 11, wherein the shape and area of the orthographic projection of the auxiliary via hole on the substrate base plate are the same.
15. The display panel according to claim 1, wherein the light emitting elements are Micro LEDs, minileds, or composite LEDs.
16. The display panel according to claim 1, wherein the display panel comprises a plurality of first touch units and a plurality of second touch units arranged on the same layer, and the first touch units and the second touch units are insulated from each other; the first touch unit comprises a plurality of first touch electrodes, and the first touch electrodes in the same first touch unit are arranged along a first direction; the second touch unit comprises a plurality of second touch electrodes, and each second touch electrode in the same second touch unit is arranged along a second direction, wherein the first direction and the second direction are crossed;
the touch electrodes comprise the first touch electrode and the second touch electrode; in the same first touch unit, two first touch electrodes adjacent to each other along a first direction are electrically connected with the same first transparent electrode layer through the first via hole; in the same second touch unit, two second touch electrodes adjacent to each other in the second direction are electrically connected through a connecting portion, and the connecting portion and the second touch electrodes are arranged on the same layer.
17. A method for manufacturing a display panel according to any one of claims 1 to 16, comprising:
providing a substrate base plate;
forming an array layer on one side of the substrate base plate;
arranging a light-emitting element on one side of the array layer far away from the substrate base plate;
forming a first transparent electrode layer on the surface of one side of the light-emitting element, which is far away from the substrate;
forming an insulating layer on one side of the first transparent electrode layer, which is far away from the substrate base plate;
forming a plurality of first via holes on the insulating layer, wherein the first via holes penetrate through the insulating layer along a direction perpendicular to the substrate and expose at least part of the first transparent electrode layer;
and forming a plurality of touch electrodes on one side of the first transparent electrode layer, which is far away from the substrate base plate, so that at least two touch electrodes are electrically connected with the same first transparent electrode layer through the first through hole.
18. The method for manufacturing a display panel according to claim 17,
when the light-emitting element is arranged on one side of the array layer, which is far away from the substrate base plate, the surface of the light-emitting element, which is far away from the substrate base plate, and the surface of the array layer, which is far away from the substrate base plate, form a height difference along the direction vertical to the substrate base plate;
forming a first transparent electrode layer on the surface of the light-emitting element on the side far away from the substrate, specifically:
and forming a transparent electrode layer on the surfaces of the light-emitting element and the array layer, which are far away from the substrate base plate, wherein the transparent electrode layer is divided into a first transparent electrode layer and a second transparent electrode layer which are insulated from each other by the height difference, the first transparent electrode layer is positioned on the surface of the light-emitting element, which is far away from the substrate base plate, and the second transparent electrode layer is positioned on the surface of the array layer, which is far away from the substrate base plate.
19. A display device characterized by comprising the display panel according to any one of claims 1 to 16.
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| CN114035699A (en) * | 2021-03-10 | 2022-02-11 | 重庆康佳光电技术研究院有限公司 | LED touch chip, preparation method thereof and display device |
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| CN114185190B (en) * | 2021-12-06 | 2023-11-24 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN115117093A (en) * | 2022-06-14 | 2022-09-27 | 厦门天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN115513363A (en) * | 2022-10-09 | 2022-12-23 | 上海天马微电子有限公司 | Display module and display device |
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