Display panel
阅读说明：本技术 一种显示面板 (Display panel ) 是由 周阳 蔡在秉 于 2019-10-12 设计创作，主要内容包括：本发明涉及一种显示面板,一方面,本发明通过在所述弯折区的源漏极层对应于所述金属走线的位置处设有凹槽,所述凹槽内填充有导电材料。通过导电材料连接金属走线,从而可以使弯折区域的金属走线不用考虑应力平衡问题,从而降低弯折半径,降低边框宽度,提高屏占比,最终给客户带来更好的视觉体验；另一方面,本发明还通过设置垫板,并在所述垫板对应于所述凹槽的位置间隔设有导电桥,通过导电桥能够更好的连接金属走线,防止金属走线厚度太低导致导电材料无法连通金属走线的现象发生。(On one hand, the source drain layer of the bending area is provided with a groove at a position corresponding to the metal wiring, and the groove is filled with a conductive material. The metal wires are connected through the conductive material, so that the stress balance problem of the metal wires in the bending area is not considered, the bending radius is reduced, the frame width is reduced, the screen occupation ratio is improved, and better visual experience is brought to a client finally; on the other hand, the base plate is arranged, the conductive bridges are arranged at the positions, corresponding to the grooves, of the base plate at intervals, the metal wires can be better connected through the conductive bridges, and the phenomenon that the conductive materials cannot be communicated with the metal wires due to too low thickness of the metal wires is avoided.)
1. A display panel is defined with a bending area and a non-bending area, and is characterized by comprising:
a substrate;
an insulating layer disposed on the substrate;
the source drain layer is arranged on the insulating layer;
the source drain layer of the non-bending region comprises a plurality of metal wires which are arranged at intervals;
and a groove is arranged at the position, corresponding to the metal wire, of the source drain layer of the bending area, and a conductive material is filled in the groove.
2. The display panel according to claim 1, further comprising: a semiconductor device layer disposed on the substrate;
the semiconductor device layer includes:
an active layer disposed on the substrate;
a gate insulating layer disposed on the active layer;
a gate electrode layer disposed on the gate insulating layer;
wherein the insulating layer is disposed on the gate layer.
3. The display panel according to claim 1, further comprising:
the flat layer is arranged on the source drain electrode layer; and
a pixel defining layer disposed on the planarization layer;
the groove penetrates through the pixel defining layer and the flat layer to the source drain layer.
4. The display panel according to claim 3, further comprising a pad disposed on a side of the substrate away from the source and drain layers.
5. The display panel according to claim 4, wherein the pad plate is provided with conductive bridges at intervals corresponding to the grooves, and the grooves penetrate through the pixel defining layer, the planarization layer, the source drain layer and the insulating layer until penetrating through the substrate.
6. The display panel according to claim 5, wherein the conductive bridge is formed by one or more of 3D printing technology and electroplating.
7. The display panel according to claim 4, wherein a side shape of a contact surface of the pad plate and the substrate after bending comprises an arc shape or a rectangular shape.
8. The display panel according to claim 1, wherein the groove is formed by one or more of laser, wet etching, and dry etching.
9. The display panel of claim 1, wherein the conductive material comprises one or more of a conductive ink, a graphene dispersion, and a polyaniline solution.
10. The display panel of claim 1, wherein the conductive material fills the grooves by electro-hydraulic ink-jet technology using negative voltage printing.
Technical Field
The invention relates to the technical field of display, in particular to a display panel.
Background
Organic Light-Emitting display devices (also called Organic Light-Emitting diodes, abbreviated as OLEDs) are also called Organic electroluminescent display devices and Organic Light-Emitting semiconductors. The working principle of the OLED is as follows: when power is supplied to a proper voltage, positive holes and cathode charges are combined in the light-emitting layer and are recombined to form excitons (electron-hole pairs) in an excited state at a certain probability under the action of coulomb force, the excited state is unstable in a normal environment, the excitons in the excited state are recombined and transfer energy to the light-emitting material, so that the light-emitting material is transited from a ground state energy level to the excited state, the excited state energy generates photons through a radiation relaxation process, light energy is released, brightness is generated, and three primary colors of red, green and blue RGB are generated according to different formulas to form basic colors.
The OLED has the advantages of low voltage requirement, high power saving efficiency, fast response, light weight, thin thickness, simple structure, low cost, wide viewing angle, almost infinite contrast, low power consumption, extremely high response speed, and the like, and has become one of the most important display technologies today.
With the development of display technology, the narrow bezel and high screen ratio of the display panel has become a great trend. The screen occupation ratio is the ratio of the screen area to the whole machine area, and higher screen occupation ratio can bring better visual experience to users. In order to realize the narrow frame and high screen ratio of the display panel, the non-display area of the display panel needs to be bent towards the side opposite to the light-emitting surface. In the prior art, when the bending area is bent, the bending radius is not controllable, which easily causes the metal wiring in the bending area to be broken, and reduces the reliability of the display panel. Therefore, a new display panel is required to solve the above problems.
Disclosure of Invention
An object of the present invention is to provide a display panel, which can solve the problems that when a bending region is bent by a conventional display panel, the bending radius is not controllable, metal traces in the bending region are easily broken, and the reliability of the display panel is reduced.
In order to solve the above problem, an embodiment of the present invention provides a display panel defined with a bending region and a non-bending region, including: base plate, insulating layer, source drain layer. Wherein the insulating layer is disposed on the substrate; the source drain layer is arranged on the insulating layer; the source drain layer of the non-bending region comprises a plurality of metal wires which are arranged at intervals; and a groove is formed in the source drain layer of the bending region at a position corresponding to the metal wiring, and a conductive material is filled in the groove.
Further, the display panel further comprises a semiconductor device layer, and the semiconductor device layer is arranged on the substrate. Wherein the semiconductor device layer comprises: an active layer, a gate insulating layer, and a gate layer. Wherein the active layer is disposed on the substrate; the gate insulating layer is arranged on the active layer; the gate layer is arranged on the gate insulating layer; wherein the insulating layer is disposed on the gate layer.
Further, the display panel further comprises: the flat layer is arranged on the source drain electrode layer; and a pixel defining layer disposed on the planarization layer. The groove penetrates through the pixel defining layer and the flat layer to the source drain layer.
Further, the display panel further comprises a backing plate, and the backing plate is arranged on one side, far away from the source drain layer, of the substrate.
Further, the base plate is provided with conductive bridges at intervals corresponding to the grooves, and the grooves penetrate through the pixel defining layer, the flat layer, the source drain layer and the insulating layer until penetrating through the substrate.
Further, the conductive bridge is formed by one or more of 3D printing technology and electroplating.
Further, the side shape of the contact surface of the base plate and the bent base plate comprises an arc shape or a rectangular shape.
Further, the groove is formed by one or more of laser, wet etching and dry etching.
Further wherein the conductive material comprises one or more of a conductive ink, a graphene dispersion, a polyaniline solution.
Further wherein the conductive material fills the grooves by electro-hydraulic ink-jet technology using negative voltage printing.
The invention has the advantages that: on one hand, the source drain layer of the bending area is provided with a groove at a position corresponding to the metal wiring, and the groove is filled with a conductive material. The metal wires are connected through the conductive material, so that the stress balance problem of the metal wires in the bending area is not considered, the bending radius is reduced, the frame width is reduced, the screen occupation ratio is improved, and better visual experience is brought to a client finally; on the other hand, the base plate is arranged, the conductive bridges are arranged at the positions, corresponding to the grooves, of the base plate at intervals, the metal wires can be better connected through the conductive bridges, and the phenomenon that the conductive materials cannot be communicated with the metal wires due to too low thickness of the metal wires is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to embodiment 1 of the present invention.
Fig. 2 is a sectional view taken along line a-a of the display panel structure of embodiment 1 of the present invention.
Fig. 3 is a schematic plan view of the source and drain layers of the present invention.
Fig. 4 is a schematic structural diagram of a display panel according to
Fig. 5 is a B-B cross-sectional view of a display panel structure schematic diagram of
Fig. 6 is a schematic view of the structure of a backing plate of
Fig. 7 is a C-C cross-sectional view of a display panel structure schematic diagram of
Fig. 8 is a schematic structural diagram of a display panel according to embodiment 3 of the present invention.
Fig. 9 is a D-D cross-sectional view of a display panel structure schematic diagram of embodiment 3 of the present invention.
Fig. 10 is a schematic view of the structure of a backing plate of embodiment 3 of the present invention.
The components in the figure are identified as follows:
100.
102. Non-bending zone
1.
3.
5.
7.
9.
11.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to make and use the present invention in a complete manner, and is provided for illustration of the technical disclosure of the present invention so that the technical disclosure of the present invention will be more clearly understood and appreciated by those skilled in the art how to implement the present invention. The present invention may, however, be embodied in many different forms of embodiment, and the scope of the present invention should not be construed as limited to the embodiment set forth herein, but rather construed as being limited only by the following description of the embodiment.
The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are used for explaining and explaining the present invention, but not for limiting the scope of the present invention.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. In addition, the size and thickness of each component shown in the drawings are arbitrarily illustrated for convenience of understanding and description, and the present invention is not limited to the size and thickness of each component.
When certain components are described as being "on" another component, the component can be directly on the other component; there may also be an intermediate component disposed on the intermediate component and the intermediate component disposed on another component. When an element is referred to as being "mounted to" or "connected to" another element, they are directly "mounted to" or "connected to" the other element or "mounted to" or "connected to" the other element through an intermediate element.
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