CN114613827A - Display panel and display device thereof - Google Patents
Display panel and display device thereof Download PDFInfo
- Publication number
- CN114613827A CN114613827A CN202210246139.9A CN202210246139A CN114613827A CN 114613827 A CN114613827 A CN 114613827A CN 202210246139 A CN202210246139 A CN 202210246139A CN 114613827 A CN114613827 A CN 114613827A
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- display panel
- layer
- substrate
- circuit board
- emitting device
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The application discloses display panel and display device thereof includes: the light-emitting device comprises a substrate, a light-emitting component and a light-emitting component, wherein the substrate is provided with a substrate A side and a substrate B side which are opposite to each other; the circuit board and the auxiliary conducting layer are arranged on the B surface of the substrate, and the circuit board is electrically connected with the light-emitting device through the auxiliary conducting layer; the display panel further includes a driving element electrically connected to the circuit board. The driving element and the circuit board electrically connected with the driving element are arranged on the B surface of the substrate, so that the space area occupied by the driving element and the circuit board on the A surface of the substrate is reduced, namely, the area of a non-display area is reduced and the area occupation ratio of an effective display area is improved by optimizing the positions of the driving element and the flexible circuit board.
Description
Technical Field
The invention relates to the field of display, in particular to a display panel and a display device thereof.
Background
The rapid development of science and technology makes people have stronger and stronger dependence on electronic products, and accordingly, the experience feeling of electronic equipment is required to be higher and higher, and improving the effective display area of the display panel element in the electronic products and reducing the thickness of the display panel are important directions for improving the experience feeling.
The display panel comprises an effective display area and a non-display area, the non-display area is usually provided with signal lines and elements, the market of the signal lines and the elements in the non-display area is optimized, the area of the non-display area is reduced, the effective display area of the display panel can be increased, and the experience of a user is further improved.
Disclosure of Invention
The invention provides a display panel and a display device thereof, which are used for improving the effective display area ratio of the display panel, thereby improving the user experience of electronic products.
In order to achieve the technical purpose, the invention provides the following technical scheme:
a display panel: the device comprises a substrate, wherein the substrate is provided with a substrate A side and a substrate B side which are opposite; a light emitting device disposed on the substrate A side; the circuit board and the auxiliary conducting layer are arranged on the B surface of the substrate, and the circuit board is electrically connected with the light-emitting device through the auxiliary conducting layer; the driving element is electrically connected with the circuit board.
According to the technical scheme, the light-emitting device is arranged on the surface A of the substrate, namely the surface A of the substrate comprises the effective display area and the non-display area, the driving element and the circuit board electrically connected with the driving element are arranged on the surface B of the substrate, the space area occupied by the driving element and the circuit board on the surface A of the substrate is reduced, and meanwhile, the circuit board is electrically connected with the light-emitting device through the auxiliary conducting layer arranged on the surface B of the substrate. That is, by optimizing the positions of the driving element and the circuit board, the area of the non-display region is reduced, and the area ratio of the effective display region is increased.
Further, as described above, the display panel includes a display area and a non-display area on the substrate a, wherein a conducting structure is disposed in the non-display area on the substrate, the conducting structure includes a connecting hole, and the connecting hole and a conductive connecting body disposed in the connecting hole: wherein the further conductive connection electrically connects the auxiliary conductive layer and the light emitting device. By utilizing the existing structure, the thickness of a film layer does not need to be additionally increased outside the existing structure, and a conduction result is additionally arranged to realize electric connection.
Further, the conductive connector material is a metal.
Preferably, as in the display panel described above, the surface of the auxiliary conductive layer is further provided with a protective layer. The protective layer has the function of blocking water vapor to a certain extent, and prevents external water vapor from corroding the electrode sub-layer, so that the reliability of the display panel is improved, and the service life of the display panel is prolonged.
Preferably, the display panel as described above, wherein the circuit board and the protection layer are disposed on the same layer, and the thickness of the circuit board is not greater than that of the protection layer, and the circuit board is bonded to the auxiliary conductive layer. The circuit board is bound on the auxiliary conducting layer, the circuit board and the auxiliary conducting layer are guaranteed to have enough binding areas, so that the electric connection performance is guaranteed to be in a better state, the thickness of the circuit board is not larger than that of the protective layer, and the thickness of the panel is not additionally increased.
Preferably, the light emitting device includes a first electrode layer, a light emitting layer, and a second electrode layer, which are sequentially stacked, wherein a thickness of the first electrode layer is greater than a thickness of the auxiliary electrode layer. The first electrode layer has certain thickness in the range allowed by the device structure and can ensure the sufficient luminous efficiency of the light-emitting device, and the auxiliary conducting layer does not need to provide light-emitting of the light-emitting device and only needs to ensure certain conducting performance. Therefore, the thickness of the first electrode layer is greater than the thickness of the auxiliary electrode layer.
Preferably, the light emitting device includes a first electrode layer, a light emitting layer, and a second electrode layer, which are stacked, wherein the first electrode layer and the auxiliary conductive layer are made of the same material, and the materials are the same and can be prepared in the same process, so that the process flow can be simplified.
Furthermore, the material is ITO.
The display panel as described above, wherein the second electrode is a transparent electrode, and the display panel is top emission. The second electrode layer arranged on the surface A of the substrate is a transparent electrode, so that the light emitted by the display panel is emitted from the direction of the second electrode, top light emission is adopted, the light extraction path is shortened, the light loss is reduced, the light emitting efficiency is integrally improved, the reliability of the display surface is improved, and the service life of the display surface is prolonged.
A display device comprising a display panel as described in any one of the above.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only schematic diagrams of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of an organic light emitting display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic cross-sectional structure of an organic light emitting display panel according to another embodiment of the present disclosure.
Fig. 3 is a schematic cross-sectional structure diagram of an organic light emitting display panel according to still another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present invention without creative efforts belong to the protection scope of the present invention.
As background art, in the display panel of the prior art, the non-display area is disposed with a trace and element structure, wherein the area of the non-display area occupied by the driving element and the circuit board is larger, and therefore, optimizing the positions of the driving element and the circuit board becomes an important direction for reducing the area of the non-display area and increasing the area ratio of the effective display area.
After many researches, the inventor finds out how to ensure the stability of the electric connection between the driving element and the light emitting device becomes a crucial factor in optimizing the positions of the driving element and the circuit board. The position positions of the driving element and the circuit board are optimized, and meanwhile, the stability of electric connection with the light-emitting device is guaranteed, so that the display area panel ratio can be effectively improved.
For the above reasons, the present application provides a display panel, and referring to fig. 1, fig. 1 is a schematic cross-sectional structural diagram of the display panel, where the display panel includes;
the substrate comprises a substrate 10, wherein the substrate 10 is provided with a substrate A side 101 and a substrate B side 102 which are oppositely arranged; the substrate a-side 101 includes a display area and a non-display area: the display panel comprises a light-emitting device 11 arranged on the substrate A surface 101, a circuit board 12 arranged on the substrate B surface 102 and an auxiliary conductive layer 13, wherein the circuit board 12 is electrically connected with the light-emitting device 11 through the auxiliary conductive layer 13, and the display panel further comprises a driving element 14 electrically connected with the circuit board 12.
Specifically, the light emitting device 11 includes a first electrode layer 111, a light emitting layer 112, and a second electrode layer 113.
In order to meet the structural requirement of the display panel, the display surface machine further includes a driving layer (not shown) for driving the light emitting device 11, where the driving layer is similar to the prior art, and is not described again in this embodiment.
The driving element 14 may be disposed on the circuit board 12 and electrically connected to the auxiliary conductive layer 13, or the driving element 14 may be disposed on the substrate B surface 102 and electrically connected to the circuit board 12 and the auxiliary conductive layer 13.
Further, the circuit board 12 may be a flexible circuit board, and the driving element 14 may be a driving chip.
In the embodiment of the application, the light emitting device 11 is arranged on the substrate a surface 101, the circuit board 12 is arranged on the substrate B surface 102, and the circuit board 12 is electrically connected with the light emitting device 11 through the auxiliary conductive layer arranged on the substrate B surface 102, so that the circuit board 12 does not occupy the non-display area of the light emitting device 11, the non-display area of the light emitting device 11 can be reduced, and the display area ratio is provided.
It should be noted that the substrate 10 may be a plastic substrate, a glass substrate or a quartz substrate, and the invention is not limited to the specific type of the substrate 10, which is determined according to the actual situation.
On the basis of the above embodiment, in another embodiment of the present application, referring to fig. 2, fig. 2 is a schematic cross-sectional structure diagram of the display panel, where the display panel includes:
a substrate 10 having a substrate a side 101 and a substrate B side 102 disposed opposite to each other, a light emitting device 11 disposed on the substrate a side; a circuit board 12 and an auxiliary conductive layer 13 disposed on the substrate B side, wherein the circuit board 12 is electrically connected to the light emitting device 11 through the auxiliary conductive layer 13: the display panel further includes a driving element 14 electrically connected to the circuit board 12. Specifically, the light-emitting device 11 includes a first electrode layer 111, a light-emitting layer 112, and a second electrode layer 113.
Further, the substrate a-side 101 includes a display region and a non-display region, a conductive structure 15 is disposed in the non-display region, the conductive structure includes a connection hole 151 and a conductive connection body 152 disposed in the connection hole, wherein the conductive connection body 152 electrically connects the auxiliary conductive layer 13 and the light emitting device 11, and the connection hole 151 penetrates through the substrate 10.
In this embodiment, the existing structure is utilized, and the conducting structure is added without additionally increasing the thickness of the film layer outside the existing structure, so as to realize the electrical connection.
Preferably, the conductive connection body 152 may be plated as a conductive film in the connection hole 151 by chemical vapor deposition, sputtering, or the like.
Specifically, the conductive connection body 152 is made of metal, such as silver, aluminum, copper, or silver.
In order to meet the structural requirements of the display panel, the display panel further includes an encapsulation structure 17 covering the light emitting device 11, and the encapsulation structure 17 may be a glass encapsulation, a film encapsulation, or other encapsulation structures. The package structure is similar to the prior art, and the description of this embodiment is omitted.
On the basis of the above embodiment, in a further embodiment of the present application, referring to fig. 3, wherein a protective layer 16 is further disposed on a surface of the auxiliary conductive layer, further, the circuit board 13 and the protective layer are disposed on the same 16 layers and a thickness of the circuit board is not greater than a thickness of the protective layer, and the circuit board 12 is bonded to the auxiliary conductive layer 13.
The protective layer has the effect of blocking water vapor to a certain extent, so that the corrosion of external water vapor to the auxiliary conductive layer is avoided, and the reliability and the service life of the display panel are further improved. Meanwhile, the circuit board 12 and the protection layer 16 are arranged on the same layer, and the thickness of the circuit board is not greater than that of the protection layer, that is, the thickness of the panel is not additionally increased. The circuit board 12 is bonded on the auxiliary conductive layer 13, so that the circuit board 13 and the auxiliary layer 13 have sufficient contact area, which enables the circuit board 13 to have stable signals during the electrical connection process,
further, the driving element 14 may be bonded to the circuit board 12, or the driving element 14 may be disposed on the substrate 10, whatever arrangement is, as long as the driving element 14 can be electrically connected to the auxiliary conducting voltage 13 through the circuit board 12.
Further, the light emitting device 11 includes a first electrode layer 111, a light emitting layer 112, and a second electrode layer 113 stacked in this order, wherein the thickness of the first electrode layer 111 is greater than the thickness of the auxiliary electrode layer 13.
In this embodiment, the first electrode 111 functions as an electrode of the light emitting device 11, and the thickness of the first electrode 111 is increased within the allowable range of the cost, the process and the overall thickness of the display panel, so as to be beneficial for providing sufficient current and further improving the light emitting efficiency, and the auxiliary conductive layer 13 mainly functions as a wire, and the current required to flow through the wire is not as large as the current of the first electrode 111, so that the thickness of the first electrode layer 111 is larger than the thickness of the auxiliary electrode layer 13 in consideration of the overall thickness of the display panel and the cost of the process. Thus, the first electrode 111 can further ensure the light emitting efficiency of the light emitting layer 112, and the auxiliary conductive layer 13 can ensure a certain conductivity.
The material of the first electrode 111 is the same as that of the auxiliary conductive layer 13, and may further be ITO.
Wherein the second electrode 113 is a transparent material, and the display panel type top emission light. By setting the material of the second electrode 113 to be a transparent material, the display panel adopts top emission, thereby solving the problem of large light loss of bottom emission and greatly improving the light extraction efficiency.
Furthermore, in order to prevent the light of the light emitting device from being emitted from the first electrode layer 111 and reducing the light emitting efficiency, a reflective layer (not shown) may be disposed on the first electrode layer 111, such that the light from the first electrode layer 111 is reflected to the second electrode layer 113 to continue to emit light, and the light extraction efficiency is improved.
To sum up, the present application provides a display panel and display whisker thereof, wherein, the display panel extremely includes: a substrate 10, the substrate 10 having a substrate a side 101 and a substrate B side 102 opposite to each other; the substrate A side 101 comprises a display area and a non-display area; the display panel comprises a light-emitting device 11 arranged on the substrate A surface 101, a circuit board 12 arranged on the substrate B surface 102 and an auxiliary conductive layer 13, wherein the circuit board 12 is electrically connected with the light-emitting device 11 through the auxiliary conductive layer 13, and the display panel further comprises a driving element 14 electrically connected with the circuit board 12.
This application will light emitting device sets up basement A face 101, is in circuit board 12 sets up basement B face 102, simultaneously, circuit board 12 is through setting up at basement B face 102 the supplementary conducting layer is connected with light emitting device 11 electricity, circuit board 12 does not occupy the non-display area of light emitting device 11, can reduce the non-display area of light emitting device 11, and then has improved the display area ratio. ,
the display panel of the present application may be a PMDLED panel, an AMDLED panel, a micro led panel, a quantum dot panel, etc.
The application provides a display device including above-mentioned display panel, and this display device can be cell-phone, wrist-watch, panel, computer, vehicle effect display screen isoelectron product. .
In the description, the embodiments of the various groups are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments of the various groups are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display panel, comprising:
a substrate having opposing substrate A and substrate B sides;
a light emitting device disposed on the substrate A side;
the circuit board and the auxiliary conducting layer are arranged on the B surface of the substrate, and the circuit board is electrically connected with the light-emitting device through the auxiliary conducting layer;
the display panel further includes a driving element electrically connected to the circuit board.
2. The display panel according to claim 1, wherein a display region and a non-display region are provided on the substrate a side, and a conductive structure is provided in the non-display region, the conductive structure including a connection hole and a conductive connector provided in the connection hole, wherein the conductive connector electrically connects the auxiliary conductive layer and the light emitting device.
3. The display panel of claim 2, wherein the conductive connector material is a metal.
4. The display panel according to claim 1, wherein a surface of the auxiliary conductive layer is further provided with a protective layer.
5. The display panel according to claim 4, wherein the circuit board is disposed on the same layer as the protection layer, and the thickness of the circuit board is not greater than that of the protection layer, and the circuit board is bonded to the auxiliary conductive layer.
6. The display panel according to claim 1, wherein the light-emitting device comprises a first electrode layer, a light-emitting layer, and a second electrode layer which are stacked in this order, wherein a thickness of the first electrode layer is larger than a thickness of the auxiliary conductive layer.
7. The display panel according to claim 1, wherein the light emitting device comprises a first electrode layer, a light emitting layer, and a second electrode layer stacked on each other, wherein the first electrode layer and the auxiliary conductive layer are made of the same material.
8. The display panel according to claim 7, wherein the material of the first electrode layer and the material of the auxiliary conductive layer are ITO.
9. The display panel according to claim 1, wherein the second electrode is a transparent electrode, and wherein the display panel is top emission.
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 |
|---|---|---|---|
| CN202210246139.9A CN114613827A (en) | 2022-03-14 | 2022-03-14 | Display panel and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210246139.9A CN114613827A (en) | 2022-03-14 | 2022-03-14 | Display panel and display device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114613827A true CN114613827A (en) | 2022-06-10 |
Family
ID=81863021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210246139.9A Pending CN114613827A (en) | 2022-03-14 | 2022-03-14 | Display panel and display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114613827A (en) |
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2022
- 2022-03-14 CN CN202210246139.9A patent/CN114613827A/en active Pending
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