CN211207024U - Array substrate, display panel and display device - Google Patents

Abstract

The utility model discloses an array substrate, a display panel and a display device. The array substrate comprises a substrate, a buffer layer, a driving circuit layer and a device layer which are sequentially stacked and formed on the substrate, and the array substrate further comprises At least one blind hole penetrating through the device layer and the driving circuit layer, the orthographic projection of the blind hole on the substrate covers the functional device on the substrate on the side of the array substrate away from the device layer The orthographic projection of the blind hole; the refractive index of the buffer layer corresponding to the orthographic projection of the blind hole is equal to the refractive index of the substrate. The embodiment of the present invention solves the problem of color shift caused by the transmission of outgoing light in different refractive index film layers by unifying the refractive indices of the buffer layer and the substrate corresponding to the orthographic projection of the blind hole, thereby effectively improving the array substrate. display effect, improve user experience.

Description

Array substrate, display panel and display device

Technical Field

The utility model relates to a show technical field, especially relate to an array substrate, display panel and display device.

Background

At present, with the development of display technology, the requirements of consumers on screen ratio are higher and higher. In the prior art, an opening is usually adopted in a screen to improve the screen occupation ratio of a mobile phone, however, due to the design of a film layer at the opening, the transmittance of visible light wave band light is different, color cast exists, the display effect is seriously affected, and the problem to be solved by the technical staff in the field is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, a first aspect of the present invention provides an array substrate, comprising a substrate, a buffer layer, a driving circuit layer and a device layer sequentially stacked on the substrate,

the array substrate further comprises at least one blind hole penetrating through the device layer and the driving circuit layer, and the orthographic projection of the blind hole on the substrate covers the orthographic projection of a functional device on one side, far away from the device layer, of the array substrate on the substrate;

the refractive index of the buffer layer corresponding to the blind hole orthographic projection is equal to that of the substrate.

Further, the buffer layer is composed of a first buffer layer, and the refractive index of the first buffer layer is equal to that of the substrate.

Further, the first buffer layer is silicon oxide.

Further, the buffer layer is composed of a second buffer layer and a first buffer layer which are sequentially stacked and formed on the substrate far away from the functional device, wherein the second buffer layer and the first buffer layer are sequentially stacked and formed on the substrate far away from the functional device

The refractive index of the first buffer layer is the same as that of the substrate;

the second buffer layer comprises a first portion corresponding to the orthographic projection of the blind hole and a second portion except the first portion, and the refractive index of the first portion is the same as that of the substrate.

Further, the first buffer layer is silicon oxide, the first portion of the second buffer layer is silicon oxide, and the second portion of the second buffer layer is silicon nitride.

Further, the functional device is a camera or a sensor.

Further, the device layer is a liquid crystal layer.

Further, the device layer is an electroluminescent layer.

A second aspect of the present invention provides a display panel, including the first aspect.

A third aspect of the present invention provides a display device, including the array substrate of the first aspect, or including the display panel of the second aspect.

The utility model has the advantages as follows:

the utility model discloses to present problem, formulate an array substrate, display panel and display device, through unify the buffer layer that blind hole orthographic projection corresponds and the refracting index of substrate to solve the colour cast problem that leads to because of the transmission of emergent light in different refracting index retes, thereby compensatied the problem among the prior art, effectively improved array substrate's display effect, improve user and use experience, had extensive application prospect.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an array substrate according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an array substrate according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of an array substrate according to still another embodiment of the present invention.

Detailed Description

In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

It is noted that references herein to "on … …", "formed on … …" and "disposed on … …" can mean that one layer is formed or disposed directly on another layer or that one layer is formed or disposed indirectly on another layer, i.e., there is another layer between the two layers. As used herein, unless otherwise specified, the term "on the same layer" means that two layers, components, members, elements or portions can be formed by the same patterning process, and the two layers, components, members, elements or portions are generally formed of the same material. Herein, unless otherwise specified, the expression "patterning process" generally includes the steps of coating of photoresist, exposure, development, etching, stripping of photoresist, and the like. The expression "one-time patterning process" means a process of forming a patterned layer, member, or the like using one mask plate.

As shown in fig. 1, an embodiment of the present invention provides an array substrate, including a substrate 10, a buffer layer 20, a driving circuit layer 30 and a device layer 40 sequentially stacked on the substrate, the array substrate further including at least one blind hole 50 penetrating through the device layer 40 and the driving circuit layer 30, an orthographic projection of the blind hole 50 on the substrate 10 covers an orthographic projection of a functional device on a side of the array substrate away from the device layer 40 on the substrate 10; the refractive index of the buffer layer 20 corresponding to the orthographic projection of the blind hole 50 is equal to that of the substrate 10.

In this embodiment, as shown in fig. 1, the display area of the array substrate includes at least one functional device region 60 corresponding to a functional device, wherein the functional device region 60 includes a blind hole 50, a buffer layer and a substrate corresponding to the orthographic projection of the blind hole 50, and the refractive index of the buffer layer in the functional device region 60 is set to be equal to the refractive index of the substrate 10, so as to solve the problem of color cast caused by transmission of emergent light in different refractive index films in the prior art, effectively improve the display effect of the array substrate, and improve the user experience.

Specifically, the functional device region 60 corresponds to a functional device disposed on a side of the array substrate away from the light emitting side, as shown in fig. 1, a width of an orthographic projection of the functional device region 60 on the substrate is d, and corresponds to the functional device, the functional device is at least one camera or sensor disposed below the array substrate, or the camera and the sensor, and the blind hole, the buffer layer and the substrate in the functional device region on the array substrate sense external light and reflect or transmit incident light. The functional device region 60 includes a blind hole 50, and the blind hole 50 penetrates through the device layer 40 and the driving circuit layer 30, that is, the device layer 40 and the driving circuit layer 30 in the functional device region 60 are etched away in the process of manufacturing the array substrate, so as to avoid affecting light entering and exiting the functional device region 60. On this basis, this embodiment is directed at the colour cast problem that the rete emergence that exists because of the emergent light is through different refracting indexes leads to among the prior art, sets up the refracting index of the buffer layer in the functional device region 60 to be equal with the refracting index of substrate in order to improve the colour cast problem among the prior art to effectively improve the display effect of array substrate, improve user's use and experience.

In an alternative embodiment, as shown in fig. 2, the buffer layer is composed of a first buffer layer having a refractive index equal to that of the substrate.

In this embodiment, the buffer layer 20 is only composed of the first buffer layer 21, the first buffer layer 21 is made of a silicon oxide material, the refractive index is 1.5, and the refractive index is the same as that of the glass used for the substrate in this embodiment, so that the refractive indexes of the buffer layer and the substrate are the same, and the emergent light is emitted through the glass substrate and the first buffer layer made of the silicon oxide material, which have the same refractive index, so as to effectively improve the color shift problem in the prior art.

In a specific example, the color shift test was performed on only a single glass layer, the array substrate in the related art, and the array substrate of the present embodiment, respectively. The specific test results are shown in table 1, wherein Wx and Wy are white point color coordinates of the test, and it can be seen from the data in table 1 that Wx of the white point color coordinates of the test using only single-layer glass is 0.302 and Wy is 0.311, Wx of the white point color coordinates of the test using the array substrate in the prior art is 0.319 and Wy is 0.303, and Wx of the white point color coordinates of the test using the array substrate in the present embodiment is 0.303 and Wy is 0.311. Therefore, the white point color coordinate of the array substrate in the prior art is obviously yellow, and color cast exists; the white point color coordinate of the array substrate of the embodiment is close to the test result of only using single-layer glass test, and color cast basically does not exist, so that the array substrate of the embodiment can effectively improve the color cast problem in the prior art, and has wide application prospect.

TABLE 1

Considering that the existing buffer layer generally adopts two buffer sub-layers formed by lamination, in an alternative embodiment, as shown in fig. 3, the buffer layer is composed of a second buffer layer 22 and a first buffer layer 21 which are sequentially laminated on the side of the substrate 10 away from the functional device, wherein the refractive index of the first buffer layer 21 is the same as that of the substrate 10; the second buffer layer 22 includes a first portion 221 corresponding to an orthographic projection of the blind via 50 and a second portion 222 other than the first portion, and a refractive index of the first portion 221 is the same as a refractive index of the substrate 10.

Considering that the buffer layer is composed of the second buffer layer 22 and the first buffer layer 21 sequentially stacked and formed on the substrate in a direction away from the substrate, the refractive index of the first buffer layer 21 is the same as that of the substrate 10, and the refractive index of the second buffer layer 11 is different from that of the first buffer layer 21, improvement of the color shift problem is achieved by improving the structure of the buffer layer in the functional device region, for example, setting the refractive index of the second buffer layer in the functional device region.

In this embodiment, the buffer layer and the substrate in the functional device region have uniform refractive indexes by changing the manufacturing steps of the buffer layer of the array substrate, where the first buffer layer 21 is silicon oxide with a refractive index of 1.5, the second buffer layer 22 is silicon nitride with a refractive index of 2, and the substrate is glass with a refractive index of 1.5. The specific manufacturing steps are as follows:

a second buffer layer 22 is first formed on the substrate 10.

Then, etching is performed on the second buffer layer 22 at a position corresponding to the functional device region to form an opening penetrating through the second buffer layer 22, that is, the second buffer layer is divided into a first part 221 of the opening and a second part 222 except the first part 221.

Finally, a first buffer layer 21 is formed on the second buffer layer 22 and the exposed substrate 10, and the first portion 221 is filled with the material of the first buffer layer 21, that is, the first portion 221 of the second buffer layer is silicon oxide, and the second portion is silicon nitride. Therefore, the refractive index of the buffer layer in the functional device region is 1.5, the buffer layer comprises the first portion 221 and the first buffer layer corresponding to the orthographic projection of the first portion 221, and the refractive index of the buffer layer is equal to that of the substrate, so that the problem of color cast in the prior art is solved, and the display effect of the array substrate is improved.

The test result of the color shift test of the array substrate of this embodiment is similar to that of the array substrate of the above embodiment, and no color shift occurs, so that the array substrate of this embodiment can effectively improve the color shift problem existing in the prior art.

In an alternative embodiment, the device layer is a liquid crystal layer or an electroluminescent layer.

In this embodiment, on the basis of unifying the refractive indexes of the buffer layer and the substrate corresponding to the blind hole orthographic projection and improving the color shift of the emergent light on the emergent surface of the array substrate, the device layer may be a liquid crystal layer or a light-emitting layer of an electroluminescent device, that is, the array substrate may be an array substrate of a liquid crystal display or an array substrate of an electroluminescent device, for example, an array substrate of O L ED.

Based on the array substrate of the above embodiment, another embodiment of the present invention provides a display panel, including the above array substrate.

Meanwhile, another embodiment of the present application further provides a display device, where the display device includes the above display panel or the above array substrate, and the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.

The utility model discloses to present problem, formulate an array substrate, display panel and display device, through unify the refracting index of buffer layer and substrate in the functional device region to solve the colour cast problem that leads to because of the transmission of emergent light in different refracting index retes, thereby compensatied the problem among the prior art, effectively improved array substrate's display effect, improve user and use experience, have extensive application prospect.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims (10)

1. An array substrate, characterized in that, comprising a substrate, a buffer layer, a driving circuit layer and a device layer sequentially stacked on the substrate, The array substrate further includes at least one blind hole penetrating the device layer and the driving circuit layer, and the orthographic projection of the blind hole on the substrate covers the functional device on the side of the array substrate away from the device layer an orthographic projection on the substrate; The refractive index of the buffer layer corresponding to the orthographic projection of the blind hole is equal to the refractive index of the substrate. 2 . The array substrate according to claim 1 , wherein the buffer layer is composed of a first buffer layer, and the refractive index of the first buffer layer is equal to that of the substrate. 3 . 3. The array substrate of claim 2, wherein the first buffer layer is silicon oxide. 4 . The array substrate according to claim 1 , wherein the buffer layer is composed of a second buffer layer and a first buffer layer which are sequentially stacked and formed on the side of the substrate away from the functional device, wherein The refractive index of the first buffer layer is the same as the refractive index of the substrate; The second buffer layer includes a first portion corresponding to the orthographic projection of the blind hole and a second portion other than the first portion, the first portion having the same refractive index as the substrate. 5 . The array substrate of claim 4 , wherein the first buffer layer is silicon oxide, the first portion of the second buffer layer is silicon oxide, and the second portion of the second buffer layer is silicon oxide. 6 . is silicon nitride. 6 . The array substrate according to claim 1 , wherein the functional device is a camera and/or a sensor. 7 . 7. The array substrate according to claim 1, wherein the device layer is a liquid crystal layer. 8. The array substrate according to claim 7, wherein the device layer is an electroluminescence layer. 9. A display panel, comprising the array substrate according to any one of claims 1-8. 10 . A display device, comprising the array substrate according to any one of claims 1 to 8 , or the display panel according to claim 9 . 11 .

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