Array substrate and display panel

The present invention provides an array substrate and a display panel, wherein the first protrusion and the second protrusion are provided in the filter unit of the color filter layer, and the second gap between the data line and the drain is covered with the first protrusion and/or the second protrusion, to solve the problem that a residue of the ITO exists in the second gap, which causes short circuit between the pixel electrode and the DBS electrode, such that the product yield is elevated, and the display effect is improved, thus enhancing customer experience.

BACKGROUND OF INVENTION

The present application claims priority to Chinese patent application no. 202010068728.3 submitted to Chinese Patent Office on Jan. 21, 2020, entitled “array substrate and display panel”, the entire contents of which are incorporated herein by reference.

Field of Invention

The present invention relates to a field of display technology, and in particular, to an array substrate and a display panel.

Description of Prior Art

A display device can transform the computer's data into various characters, numbers, symbols, or intuitive images for display, and an input tool such as a keyboard can be used to input commands or data into the computer, and system hardware and software are employed to add, delete, and change the display content whenever necessary. Display devices are classified into plasma, liquid crystal, light emitting diode, and cathode ray tube types according to display devices used.

A liquid crystal display (LCD) uses liquid crystal material as the basic component, wherein a liquid crystal material is filled between two parallel plates, and an arrangement of molecules inside the liquid crystal material is changed by voltage to achieve the purpose of light shading and light transmission to display regularly distributed images with different shades, and as long as a color filter layer of three primary colors is added between the two plates, a color image can be displayed.

Multi-domain alignment liquid crystal displays (MVA LCDs) have been widely used in large-size liquid crystal displays and TV applications with their advantages of high contrast and wide viewing angles. With evolution towards a large-size screen, the design of 8-domain pixels has been valued in large-size displays due to its excellent viewing angle performance. However, the refinement in pixel size and the increase in a number of domains have seriously led to a reduction in transmittance of the panel. The emergence of demand-based switching (DBS) technology has improved the transmittance, DBS technology is to flexibly adjust the operating frequency and voltage of a CPU according to the load of the CPU.

When the pixel has a small size, the color filter layer has a half-opened opening, so that two structures of a pixel electrode and a DBS electrode are present simultaneously in the opening. Before ITO etching, a photoresist layer is first applied for photo-lithography to form the desired pattern. Because the color filter layer is relatively thick, it is easy to cause accumulation of the photoresist layer on a bottom side of the color filter layer and it cannot be removed, such that the ITO at this position will not be etched away during etching, which may easily cause the ITO to remain, and short-circuit phenomenon of the pixel electrode and the DBS electrode occurs. Therefore, there is an urgent need to improve the opening design of the color filter layer to avoid the above phenomenon.

SUMMARY OF INVENTION

An object of the present invention is to provide an array substrate, which can solve the problem that a residue of the ITO remains in the opening of the color filter layer in the existing array substrate, which causes short circuit between the pixel electrode and the DBS electrode, such that the product yield is elevated, and the display effect is improved, thus enhancing customer experience.

In order to solve the above problem, the present invention provides an array substrate including a color filter layer including at least one filter unit, wherein the filter unit includes: a filter body; an opening extending from one side of the filter body to a middle portion of the filter body, wherein the opening is defined and surrounded by a first side, a second side, and a third side connected end to end, and the first side is disposed opposite to the third side; a first protrusion protruding from the first side of the opening; and a second protrusion protruding from the third side of the opening and disposed opposite to the first protrusion.

Further, the filter unit further includes: a first gap formed between the first protrusion and the second protrusion.

Further, the array substrate further includes: a first substrate; a gate disposed on the first substrate; a drain disposed on the gate; and a data line disposed on the first substrate, wherein a second gap is formed between the data line and the drain, wherein the color filter layer is disposed on the first substrate and extends to cover surfaces of the data line and the drain, the drain is disposed in the opening, and the second gap is covered by the first protrusion and/or the second protrusion.

Further, the filter unit further includes: a pixel electrode disposed on the drain and extending from the opening to a surface of the color filter layer; and a DBS electrode disposed on the color filter layer and disposed opposite to the data line.

Further, the filter unit further includes: a first insulating layer disposed between the gate and the drain.

Further, the filter unit further includes: a second insulating layer disposed between the drain and the pixel electrode, and extending to cover the color filter layer.

Further, the pixel electrode and the DBS electrode are spaced apart from each other.

An object of the present invention is to provide a display panel, which can solve the problem that a residue of the exists in the opening of the color filter layer in the existing array substrate, which causes short circuit between the pixel electrode and the DBS electrode, such that the product yield is elevated, and the display effect is improved, thus enhancing customer experience.

In order to solve the above problems, the present invention provides a display panel including the array substrate according to the present invention.

Further, the display panel further includes: a color filter substrate disposed above the array substrate correspondingly; a liquid crystal layer disposed between the array substrate and the color filter substrate; and a backlight module disposed on a side of the array substrate away from the color filter substrate.

Further, the color filter substrate includes: a second substrate; and a black matrix layer disposed on a side surface of the second substrate facing the array substrate.

The present invention provides an array substrate and a display panel, wherein the first protrusion and the second protrusion are provided in the filter unit of the color filter layer, and the second gap between the data line and the drain is covered with the first protrusion and/or the second protrusion, to solve the problem that a residue of the ITO exists in the second gap, which causes short circuit between the pixel electrode and the DBS electrode, such that the product yield is elevated, and the display effect is improved, thus enhancing customer experience.

Elements in the drawings are designated by reference numerals listed below:

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, in which FIG. Those skilled in the art will more readily understand how to implement the present invention. The present invention may, however, be embodied in many different forms and embodiments, and the scope of the present invention is not limited to the embodiments described herein.

The following description of the various embodiments is provided to illustrate the specific embodiments of the present invention. The spatially relative directional terms mentioned in the present invention, such as “upper”, “lower”, “before”, “after”, “left”, “right”, “inside”, “outside”, “side”, etc., and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures which are merely references.

In the drawings, the spatially relative terms are intended to encompass different orientations in addition to the orientation as depicted in the figures. Moreover, the size and thickness of each component shown in the drawings are arbitrarily shown for ease of understanding and description, and the present invention does not limit the size and thickness of each component.

When a component is described as “on” another component, the components are formed in direct contact, and may also include embodiments in which additional features may be formed interposing the first and second features, such that the first and second features may not be in direct contact. When a component is described as “installed to” or “connected to” another component, it can be understood that a component is “directly installed” or “directly connected” to another component, or a component is “installed to” or “connected with” another component through an intermediate component.

EXAMPLES

As shown inFIG. 1, this embodiment provides a display panel100including an array substrate1, a color filter substrate2, a liquid crystal layer3, and a backlight module4.

As shown inFIG. 2, the array substrate1includes a first substrate11, a gate electrode12, a first insulating layer13, a drain14, a data line15, a color filter layer16, a second insulating layer17, a pixel electrode18, and a DBS electrode19.

The first substrate11is made of a material including one or more of glass, silicon dioxide, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene terephthalate, polyimide, and polyurethane, to provide the first substrate11with good functions of blocking water and oxygen and protecting the panel.

As shown inFIG. 2, the gate electrode12is disposed on the first substrate11; material of the gate layer12includes copper or molybdenum.

As shown inFIG. 2, the first insulating layer13is provided on the gate12to prevent short circuit between the gate12and the drain14through their contact. Material of the first insulating layer13includes one or more of SiO2 and SiNx.

As shown inFIG. 2, the drain14is disposed on the first insulating layer13; material of the drain14includes copper or molybdenum. The data line15is disposed on the first insulating layer13, and a second gap is formed between the data line15and the drain14.

As shown inFIG. 2, the color filter layer16is disposed on the first insulating layer13and extends to cover the surfaces of the data lines15and the drains14.

As shown inFIGS. 2 and 3, the color filter layer16includes at least one filter unit. The filter unit includes a filter body161, an opening162, a first protrusion163, and a second protrusion164. The opening162extends from one side of the filter body161to a middle portion of the filter body161. The opening162is defined and surrounded by a first side1621, a second side1622, and a third side1623connected end to end. The first side1621is disposed opposite to the third side1623. The first protrusion163protrudes from the first side1621of the opening162; the second protrusion164protrudes from the third side1623of the opening162and is disposed opposite to the first protrusion163; the first protrusion163protrudes from an end of the first side1621of the opening162away from the second side1622; the first protrusion163protrudes toward the third side1623, and similarly, the second protrusion164protrudes toward the first side1621.

As shown inFIGS. 2 and 3, the drain14is located in the opening162; the second gap is covered by the first protrusion163and/or the second protrusion164. The second gap is covered by the first protrusion163and/or the second protrusion164, so as to prevent the photoresist layer from accumulating at the opening162. Therefore, when the ITO is etched, the ITO at the opening162is also etched away, thus avoiding occurrence of the residue of ITO at the opening16, such that the problem of short circuit occurs between the pixel electrode18and the DBS electrode19is solved, the product yield is elevated, the display effect is improved, and thus the customer experience is improved.

The filter unit further includes a first gap formed between the first protrusion163and the second protrusion164. Since lengths of the first protrusion163and the second protrusion164perpendicular to the second side is less than 10 μm, the first gap is mainly to prevent the first protrusion163and the second protrusion164from being connected together, and to avoid fracture to occur between the first protrusion163and the second protrusion164.

As shown inFIG. 2, the second insulating layer17is disposed between the drain16and the pixel electrode18and extends to cover the surface of the color filter layer16. The pixel electrode18penetrates the second insulating layer17at a position of the opening162and is connected onto the drain16.

The pixel electrode18is disposed on the drain16and extends from the opening162to the surface of the second insulating layer17. Material of the pixel electrode18includes one or more of ITO and IGZO.

The DBS electrode19is disposed on the second insulating layer17and is opposite to the data line15. Material of the DBS electrode19includes one or more of ITO and IGZO. A signal line of the DBS electrode19is used to replace the black matrix layer, so as to achieve the effect of light shielding on the data line15.

The pixel electrode18and the DBS electrode19are spaced apart from each other, mainly to prevent the pixel electrode18and the DBS electrode19from a short circuit due to contact with each other.

As shown inFIG. 1, the color filter substrate2is correspondingly disposed above the array substrate1. The color filter substrate2includes a second substrate21and a black matrix layer22. The black matrix layer22is disposed on a surface of the second substrate21facing the array substrate1, and is mainly used to prevent light leakage or color mixing.

As shown inFIG. 1, a liquid crystal layer3is disposed between the array substrate1and the color filter substrate2. A backlight module4is disposed on a side of the array substrate1away from the color filter substrate2. The backlight module4mainly provides the array substrate1, the liquid crystal layer3, and the color filter substrate2thereon with incident light to realize the light emission of the display panel100. The backlight module can be divided into a direct-lit backlight and an edge-lit backlight according to the position of the light source in the backlight module.

The array substrate and the display panel provided in the embodiments of the present application have been described in detail above. Specific examples are used in this document to explain the principles and implementation of the present invention. The descriptions of the above embodiments are only for understanding the method of the present invention and its core ideas, to help understand the technical solution of the present application and its core ideas, and a person of ordinary skill in the art should understand that it can still modify the technical solution described in the foregoing embodiments, or equivalently replace some of the technical features. Such modifications or replacements do not depart the spirit of the corresponding technical solutions beyond the scope of the technical solutions of the embodiments of the present application.