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.

