The present disclosure is related to the field of panel manufacturing, and in particular to an array substrate, a manufacturing method and a display panel thereof.
Currently, as a one-dimensional nanomaterial, carbon nanotubes are light in weight and have a perfect hexagonal structure. Since the structure of carbon nanotubes is the same as the layer structure of graphite, the carbon nanotubes have good electrical properties. In the field of existing display panel manufacturing, a film made of randomly oriented carbon nanotube nets is often used as an active layer in an array substrate.
In addition, since an n-type carbon nanotube thin film transistor which has a carbon nanotube film used as an active layer generally has a high Ioff current, a semiconductor material with a high electron concentration is usually added between the source/drain electrode and the carbon nanotube thin film active layer, so as to reduce the hole current, thereby to achieve the reduction of loff. However, since the n-type carbon nanotube active layer is thin, it cannot be processed in a manner like that of the amorphous silicon thin film transistor device: the ohmic contact layer on the active layer is etched to have the ohmic contact layer be patterned.
Thus, a simple, low-cost manufacturing method for an n-type carbon nanotube TFT with ohmic contact layer materials is important.
An array substrate, a manufacturing method and a display panel thereof are provided, so as to simplify the preparing process of the array substrate in the prior art and reduce the cost.
In order to achieve the above objective, the technical solutions provided by the present disclosure are as follows:
A manufacturing method for array substrate, includes:
In the manufacturing method, the step S10, includes:
In the manufacturing method, the step S30, includes:
In the manufacturing method, the active layer is made by a printing method.
In the manufacturing method, the material of the active layer is carbon nanotube.
In the manufacturing method, the ohmic contact layer is made by a solution of the carbon nanotube doped with electrons.
In the manufacturing method, the carbon nanotube is a single-walled carbon nanotube, a double-walled carbon nanotube or a carbon nanotube bundle.
In the manufacturing method, the second metal layer is formed as a source/drain of the array substrate.
The present disclosure providing an array substrate, wherein the array substrate is made by the following methods, the manufacturing method includes:
In the array substrate of the present disclosure, the step S10 includes:
In the array substrate, the active layer is made by a printing method.
In the array substrate, the material of the active layer is carbon nanotube.
In the array substrate, the carbon nanotube is a single-walled carbon nanotube, a double-walled carbon nanotube or a carbon nanotube bundle.
In the array substrate of the present disclosure, the second metal layer is formed as a source/drain of the array substrate.
The present disclosure also providing a display panel, includes an array substrate, wherein the array substrate is made by a manufacturing method, which includes:
In the display panel, the active layer is made by a printing method.
In the display panel, the material of the active layer is carbon nanotube.
In the display panel, the carbon nanotube is a single-walled carbon nanotube, a double-walled carbon nanotube or a carbon nanotube bundle.
In the display panel, the second metal layer is formed as a source/drain of the array substrate.
Effective result: through forming a first photoresist layer which having a predetermined pattern on the active layer, and forming an ohmic contact layer and second metal layer on the first photoresist layer sequentially. Simultaneous stripping of the first photoresist layer and the useless ohmic contact layer and the second metal layer on the first photoresist layer by a stripping process, by a mask process, to cause the ohmic contact layer and the second metal layer to have the predetermined pattern. It simplifies the preparing process and reduces the cost.
In order to clearly illustrate the embodiments and technical solutions in the prior art, brief description of the drawings are used in the embodiments or the description of prior art will be given below. Obviously, the drawings in the following description are only some embodiments of the invention. In the case of without providing creative work, those of ordinary skill in the art can obtain other drawings according to these drawings.
The following description of each embodiment refers to the additional drawings, in order to illustrate the specific embodiments that may be implemented by the present disclosure. The directional terms mentioned in this invention, such as [upper], [lower], [front], [post], [left], [right], [inside], [outside], [side], etc., are only refers to the direction of the additional drawings. Therefore, the terms are used to illustrate and understand the present invention, not to limit the present invention. In the drawings, structurally similar elements are denoted by the same reference numerals.
The
First, base substrate 101 is provided. The raw material of the base substrate 101 may be one of a glass substrate, a quartz substrate, a resin substrate, etc.
As shown in
Second, a first photomask process is applied to the first metal layer 102. A second photoresist layer (not shown) is coated on the first metal layer 102, and then the second photoresist layer is exposed by using a mask (not shown). After the development and the patterning process of the first etching, the first metal layer 102 is formed into a gate 109 as shown in
In addition, the gate of the array substrate may also be formed by printing of other conductive materials that can be made into ink.
Step S20, form a gate insulating layer on the gate.
As shown in
Step S30, form an active layer on the gate insulating layer.
As shown in
It can be understood that the active layer 104 can be obtained by a more conventional process: first, an active layer 104 as shown in
Step S40, form a first photoresist layer having a predetermined pattern on the active layer; in this step, first of all, a first photoresist layer is formed on the active layer 104, and the first photoresist layer covers the active layer 104 and the gate insulating layer 103, and then the first photoresist layer is exposed by using a mask (not shown in the figures), and the first photoresist layer 105 as shown in
Step S50, form an ohmic contact layer and a second metal layer on the first photoresist layer sequentially.
As shown in
In addition, in the embodiment, the carbon nanotube used as the material of the active layer 104 and the ohmic contact layer 106 may be a single-walled carbon nanotube, a double-walled carbon nanotube or a carbon nanotube bundle. The nanotube carbon can be used in the preferred embodiment by dispersing it in a suitable organic solvent.
As shown in
Step S60, strip the first photoresist layer.
In this step, it mainly strips the first photoresist layer 105 on the base substrate 101 by a stripping process. When the first photoresist layer 105 is stripped, the ohmic contact layer 106 and the second metal layer 107 on the first photoresist layer 105 are stripped together, and the structures of ohmic contact layer 106 and the second metal layer 107 are obtained as shown in
Step S70, form a passivation layer on the second meatal layer.
As shown in
An array substrate is provided, wherein the array substrate is prepared by the above manufacturing method of the array substrate.
A display panel is provided, wherein the display panel includes the above array substrate.
An array substrate, a manufacturing method, and a display panel thereof are provided. The method includes, first of all, forming a gate layer, a gate insulating layer, an active layer on a base substrate, forming a first photoresist layer having a predetermined pattern on the active layer, and forming an ohmic contact layer and a second metal layer on the first photoresist layer sequentially, and simultaneously stripping the first photoresist layer and the ohmic contact layer and the second metal layer which are on the first photoresist layer. The ohmic contact layer and the second metal layer are formed into a predetermined pattern by a single photomask processing. The present disclosure simplifies the preparing process of the array substrate and reduces the cost.
In summary, although the present disclosure has been disclosed in the above embodiments, the above embodiments are not used to limit the present disclosure. A person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present disclosure, and the scope of protection of the present disclosure is defined by the claims.
Number | Date | Country | Kind |
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201810659928.9 | Jun 2018 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2018/103290 | 8/30/2018 | WO | 00 |