WO2016165291A1

WO2016165291A1 - Array substrate, display panel and display device

Info

Publication number: WO2016165291A1
Application number: PCT/CN2015/091005
Authority: WO
Inventors: 朱亚文; 莫再隆; 樊浩原; 胡伟; 周全国
Original assignee: 京东方科技集团股份有限公司; 成都京东方光电科技有限公司
Priority date: 2015-04-17
Filing date: 2015-09-29
Publication date: 2016-10-20
Also published as: CN104730779A

Abstract

Provided are an array substrate (10), a display panel and a display device. The display panel comprises an array substrate (10) and a colored film substrate (20) which are arranged in a box corresponding way, and a spacer (30) located between the array substrate (10) and the colored film substrate (20), the array substrate (10) comprising a thin-film transistor (1) arranged on a base substrate (100); and by means of arranging a projection of the thin-film transistor (1) on the base substrate (100) to completely fall into a projection of the spacer (30) on the base substrate (100), the spacer (30) can protect the thin-film transistor (1) from being irradiated by light reflected by the colored film substrate (20).

Description

Array substrate, display panel and display device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 20151018491, filed on Jan. 17, 2015 in

Technical field

The present disclosure relates to the field of display technologies, and in particular, to an array substrate, a display panel, and a display device.

Background technique

Thin Film Transistor-Liquid Crystal Display (TFT-LCD) has the characteristics of small size, low power consumption, no radiation, etc. It has been rapidly developed in recent years and is dominant in the current flat panel display market.

However, the thin film transistor included in the thin film transistor liquid crystal display is a semiconductor element, and its performance is easily affected by light, thereby generating a light leakage phenomenon, resulting in picture defects such as crosstalk and flicker.

Summary of the invention

The present disclosure provides an array substrate, a display panel, and a display device for solving the problem that light reflected by the color filter substrate affects the performance of the thin film transistor.

In order to solve the above technical problem, an array substrate is provided in an embodiment of the present disclosure, including a thin film transistor disposed on a substrate and a spacer disposed on the thin film transistor. The projection of the thin film transistor on the substrate substrate completely falls into the projection of the spacer on the substrate.

In the array substrate as described above, optionally, the spacer wraps the thin film transistor.

The array substrate as described above, optionally, the spacer is made of an opaque material.

A display panel further includes an array substrate and a color filter substrate disposed opposite to each other, and a spacer between the array substrate and the color filter substrate. The array substrate includes a thin film transistor disposed on a base substrate, and a projection of the thin film transistor on the base substrate completely falls into a projection of the spacer on the base substrate such that the The spacer is capable of blocking light reflected by the color filter substrate from being incident on the thin film transistor.

In the display panel as described above, optionally, the spacer surrounds the thin film transistor.

The display panel as described above, optionally, the spacer is disposed on the array substrate, The spacer is disposed on the color filter substrate.

In the display panel as described above, optionally, a black matrix is disposed on the color filter substrate, and a projection of the spacer on the color filter substrate is completely covered by the black matrix.

As the display panel as described above, optionally, the spacer is made of an opaque material.

In the display panel as described above, optionally, the spacer has a trapezoidal shape in a longitudinal section.

A display device including the display panel as described above is also provided in the embodiment of the present disclosure.

The beneficial effects of the above technical solutions of the present disclosure are as follows:

In the above technical solution, the liquid crystal panel includes an array substrate and a color filter substrate of the pair of boxes, and a spacer between the array substrate and the color filter substrate. The array substrate includes a thin film transistor disposed on a base substrate. By setting the projection of the thin film transistor on the substrate to completely fall into the projection of the spacer on the substrate, so that the spacer can protect the thin film transistor from being reflected by the light reflected by the color filter substrate, Further, the performance of the thin film transistor is improved, and the picture display quality of the display device is improved.

DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present disclosure, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural view of a liquid crystal panel in the related art;

2 is a schematic structural view 1 of an array substrate in an embodiment of the present disclosure;

3 is a schematic structural view 2 of an array substrate in an embodiment of the present disclosure;

4 is a schematic structural view 1 of a liquid crystal panel in an embodiment of the present disclosure;

FIG. 5 is a second structural diagram of a liquid crystal panel according to an embodiment of the present disclosure;

6 is a schematic structural view 3 of a liquid crystal panel according to an embodiment of the present disclosure;

FIG. 7 is a schematic view showing the structure of a liquid crystal panel according to an embodiment of the present disclosure.

detailed description

The technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It is apparent that the described embodiments are part of the embodiments of the present disclosure, and not all of the embodiments. Based on the description All other embodiments obtained by those skilled in the art, which are described in the embodiments of the present disclosure, are within the scope of the disclosure.

Unless otherwise defined, technical terms or scientific terms used herein shall be taken to mean the ordinary meaning of the ordinary skill in the art to which the invention pertains. The words "first", "second" and similar terms used in the specification and claims of the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the words "a" or "an" and the like do not denote a quantity limitation, but mean that there is at least one. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate the relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship is also changed accordingly.

The main structure of the liquid crystal display is a liquid crystal panel. As shown in FIG. 1, the liquid crystal panel includes an array substrate 10 and a color filter substrate 20 provided to the cartridge, and a liquid crystal layer 40 filled between the array substrate 10 and the color filter substrate 20. The cell thickness of the liquid crystal panel is mainly controlled by a spacer (Post Spacer, PS) 30' formed between the array substrate 10 and the color filter substrate 20. The array substrate 10 is formed with data lines and gate lines (not shown) for defining a plurality of pixel units, each of which includes a thin film transistor 1 and a pixel electrode 6. The pixel voltage transmitted on the data line is transmitted to the pixel electrode 6 through the thin film transistor 1 for forming an electric field for driving the deflection of the liquid crystal molecules to realize display.

The thin film transistor 1 is a semiconductor element whose performance is easily affected by light. Materials in the prior art inevitably have a reflective effect on light. Therefore, in the TFT-LCD, the light reflected by the material film on the color filter substrate 20 is irradiated onto the thin film transistor 1 on the array substrate 10, causing a light leakage phenomenon, affecting the performance of the thin film transistor 1, resulting in poor picture such as crosstalk and flicker. .

The present disclosure provides a liquid crystal panel including a color film substrate and an array substrate disposed opposite to each other, and a spacer between the color film substrate and the array substrate, wherein the spacer is used to support the panel and The cell thickness is determined, and liquid crystal molecules are filled in a sealed space between the color filter substrate and the array substrate.

The array substrate includes a thin film transistor disposed on a substrate, and the projection of the thin film transistor on the substrate is completely dropped into a projection of the spacer on the substrate, so that the spacer The light that can block the reflection of the color filter substrate is irradiated to the thin film transistor, which can improve the performance of the thin film transistor and improve the picture display quality of the display device.

The spacer may be disposed on the color filter substrate or on the array substrate.

In order to improve the supporting force of the spacer, the longitudinal section of the spacer is set to be trapezoidal in the actual manufacturing process (as shown in FIG. 1-7), that is, the bottom of the spacer is large and small at the top. When the spacer is disposed on the color filter substrate, the end of the spacer in fixed contact with the color filter substrate is the bottom, and the opposite end is the top. When the spacer is disposed on the array substrate, the end of the spacer in fixed contact with the array substrate is the bottom, and the opposite end is the top.

Specific embodiments of the present disclosure will be further described in detail below with reference to the drawings and embodiments. The following examples are intended to illustrate the disclosure, but are not intended to limit the scope of the disclosure.

As shown in FIG. 2 and FIG. 3, an array substrate 10, specifically a thin film transistor array substrate, is provided in the embodiment of the present disclosure. The array substrate 10 includes a first base substrate 100, a thin film transistor 1 disposed on the first base substrate 100, and a spacer 30 disposed on the thin film transistor 1, and the thin film transistor 1 is on the first base substrate 100. The projection completely falls into the projection of the spacer 30 on the first base substrate 100, so that the spacer 30 can block the light incident from the display side from being incident on the thin film transistor 1, preventing the thin film transistor 1 from generating light leakage, and improving Characteristics of the thin film transistor 1.

Alternatively, the spacer 30 encloses the thin film transistor 1 so that the spacer 30 blocks the light incident from the display side to illuminate the thin film transistor 1 better, as shown in FIG. Specifically, the spacer 30 may be disposed on the thin film transistor 1 with the thin film transistor 1 wrapped at the bottom.

In the above technical solution, the projection of the thin film transistor on the array substrate on the substrate substrate completely falls into the projection of the spacer on the substrate, so that the spacer can block the light incident from the display side. The thin film transistor prevents the thin film transistor from generating light leakage and improves the characteristics of the thin film transistor.

Among them, the spacer 30 is preferably made of an opaque material and has an absorption effect on light. The barrier efficiency against light can be further improved with respect to the spacer 30 made of a light-transmitting material.

In order to protect the thin film transistor 1, a protective layer 102 is usually disposed between the thin film transistor 1 and the spacer 30, that is, the spacer 30 is disposed on the protective layer 102. The protective layer 102 is an insulating material such as silicon nitride, silicon oxide or silicon oxynitride, and may have a single layer, a double layer or a multilayer structure. Specifically, the material of the protective layer 102 may be SiNx, SiOx or Si(ON)x.

In a specific embodiment, the protective layer 102 is provided to have a thin thickness and only serves to protect the thin film transistor 1. The spacer 30 is disposed on the protective layer 102, and the spacer 30 wraps the film Transistor 1, as shown in Figure 3.

In another specific embodiment, the protective layer 102 is provided to be thicker, not only to protect the thin film transistor 1, but also to provide a flat surface. The spacer 30 is disposed on the protective layer 102, and the projection of the thin film transistor 1 on the first substrate 100 completely falls into the projection of the spacer 30 on the first substrate 100 as shown in FIG. Since the protective layer 102 is thicker, the height of the spacer 30 can be reduced in a case of a certain thickness, as shown in FIGS. 2 and 3.

In the above two embodiments, the spacer 30 is provided of an opaque material.

In the embodiment of the present disclosure, the longitudinal cross-sectional shape of the spacer 30 is trapezoidal, that is, the bottom of the spacer 30 is large at the top.

As shown in FIG. 3, the bottom substrate type thin film transistor array substrate is taken as an example, and the array substrate in the embodiment of the present disclosure specifically includes:

The first base substrate 100 is a transparent substrate such as a glass substrate, a quartz substrate, or an organic resin substrate;

a plurality of gate lines and a plurality of data lines (not shown) disposed on the first base substrate 100 for defining a plurality of pixel regions;

Each pixel area includes:

a thin film transistor 1 disposed on the first base substrate 100, the thin film transistor 1 including a gate electrode 2, an active layer 3, a source electrode 4, and a drain electrode 5, and a gate insulating layer is disposed between the gate electrode 2 and the active layer 3. For the layer 101, the material of the gate insulating layer 101 may be an oxide, a nitride or an oxynitride, and may be a single layer, a double layer or a multilayer structure. Specifically, the material of the gate insulating layer 101 may be SiNx, SiOx or Si(ON)x. The source electrode 4 and the drain electrode 5 are overlapped on the active layer 3;

a pixel electrode 6, one end of the pixel electrode 6 is located between the active layer 3 and the drain electrode 5;

Covering the protective layer 102 of the thin film transistor 1 and the pixel electrode 6, the thickness of the protective layer 102 is thin;

a spacer 30 disposed on the protective layer 102, the bottom of the spacer 30 wraps the thin film transistor 1;

The common electrode 7 disposed on the protective layer 102 has a position corresponding to the position of the pixel electrode 6, and the common electrode 7 has a plurality of slits for cooperating with the pixel electrode 6 to form a driving electric field.

Of course, the array substrate 10 may not include the common electrode 7 , and the pixel electrode 6 is disposed on the protective layer 102 and is in electrical contact with the drain electrode 5 through the via hole in the protective layer 102 .

The thin film transistor 1 in the embodiment of the present disclosure is not limited to the bottom gate type thin film transistor, and may also be It is a top gate thin film transistor or a coplanar thin film transistor.

Based on the same inventive concept, as shown in FIG. 4 to FIG. 7 , a display panel including an opposite array substrate 10 and a color filter substrate 20 and between the array substrate 10 and the color filter substrate 20 is further provided in the embodiment of the present disclosure. The spacer 30 has a liquid crystal molecular layer 40 filled in a sealed space between the array substrate 10 and the color filter substrate 20. The color film substrate 20 is located on one side of the display screen.

The array substrate 10 includes the thin film transistor 1 disposed on the first substrate 100, and the projection of the thin film transistor 1 on the first substrate 100 completely falls into the projection of the spacer 30 on the first substrate 100. Therefore, the spacer 30 can block the light reflected by the color filter substrate 20 from being incident on the thin film transistor 1, preventing the thin film transistor 1 from generating a light leakage phenomenon, and improving the characteristics of the thin film transistor 1.

A black matrix 8 is disposed on the color filter substrate 20, and the projection of the spacer 30 on the color filter substrate 20 is completely covered by the black matrix.

The light reflected by the color filter substrate 20 is specifically the second substrate 200 of the color filter substrate 20, and the light reflected by the black matrix 8, the filter layer 9, and the flat layer 201 formed on the second substrate 200.

In the above technical solution, the projection of the thin film transistor on the array substrate completely falls into the projection of the spacer on the array substrate, so that the spacer can block the light reflected by the color filter substrate from being irradiated to the thin film transistor, thereby preventing the thin film transistor from being generated. The light leakage phenomenon improves the characteristics of the thin film transistor and improves the display quality of the picture.

Alternatively, the spacer 30 encloses the thin film transistor 1 so that the spacer 30 blocks the light reflected by the color filter substrate 20 from illuminating the thin film transistor 1 better, as shown in FIGS. 4 and 5. Specifically, when the spacer 30 is disposed on the array substrate 10, the bottom of the spacer 30 encloses the thin film transistor 1, as shown in FIG. 4, wherein the bottom of the spacer 30 is the spacer 30 and the array substrate. 10 fixed contact ends. When the spacer 30 is disposed on the color filter substrate 20, the top of the spacer 30 encloses the thin film transistor 1, as shown in FIG. 5, wherein the top of the spacer 30 is the spacer 30 away from the color filter substrate 20. The end.

Among them, the spacer 30 is preferably made of an opaque material and has an absorption effect on light. The barrier efficiency against light is improved relative to the spacer 30 made of a light transmissive material.

In order to protect the thin film transistor 1, a protective layer 102 is usually disposed between the thin film transistor 1 and the spacer 30, that is, the spacer 30 is disposed on the protective layer 102. The protective layer 102 is an insulating material such as nitrogen. Silicon, silicon oxide or silicon oxynitride may be a single layer, a double layer or a multilayer structure. Specifically, the material of the protective layer 102 may be SiNx, SiOx or Si(ON)x.

In a specific embodiment, the protective layer 102 is provided to have a thin thickness and only serves to protect the thin film transistor 1. The spacer 30 is made of an opaque material, is disposed on the protective layer 102 of the array substrate 10, and the bottom of the spacer 30 encloses the thin film transistor 1, as shown in FIG.

In this embodiment, the spacer 30 may also be disposed on the color filter substrate 20, and the top of the spacer 30 encloses the thin film transistor 1, as shown in FIG.

In another specific embodiment, the protective layer 102 is provided to be thicker, not only to protect the thin film transistor 1, but also to provide a flat surface. The spacer 30 is made of an opaque material and is disposed on the protective layer 102 of the array substrate 10. The projection of the thin film transistor 1 on the first substrate 100 completely falls into the spacer 30 on the first substrate 100. In the above projection, as shown in Figure 6. Since the thickness of the protective layer 102 is thick, the height of the spacer 30 can be reduced with a certain thickness of the case, as shown in Fig. 4 and Fig. 6.

In this embodiment, the spacers 30 may also be disposed on the color filter substrate 20, and the projection of the thin film transistor 1 on the first substrate substrate 100 completely falls on the spacers 30 on the first substrate substrate 100. In the projection, as shown in Figure 7. A person skilled in the art can make a meaningless introduction. In this case, in order to better realize that the spacer 30 blocks the light reflected by the color filter substrate 20 from being incident on the thin film transistor 1, it is necessary to provide the thin film transistor 1 on the first base substrate 100. The projection completely falls into the projection of the spacer 30 away from the top of the color filter substrate 20 on the first base substrate 100, as shown in FIG.

Since the protective layer 102 provides a flat surface, the top of the spacer 30 may be flattened to simplify the manufacturing process of the spacer 30.

Alternatively, as shown in FIG. 4, the spacer 30 is disposed on the array substrate 10, and the bottom of the spacer 30 is disposed to wrap the thin film transistor. Since the surface of the color filter substrate 20 is flat, the supporting force of the spacer 30 can be effectively improved, the stability of the panel thickness can be improved, the unevenness of the screen unevenness can be reduced, and the display quality of the screen can be improved. At the same time, since the bottom of the spacer 30 is the largest, it is possible to better protect the thin film transistor 1 from being irradiated by the light reflected by the color filter substrate 20.

As shown in FIG. 4, the display panel in the embodiment of the present disclosure specifically includes:

The opposite arrangement of the array substrate 10 and the color filter substrate 20, the sealed space between the array substrate 10 and the color filter substrate 20 is filled with a liquid crystal molecular layer 40;

The array substrate 10 includes:

a plurality of gate lines and a plurality of data lines (not shown) disposed on the first base substrate 100 to define a plurality of pixel regions;

Each pixel area includes:

The spacer 30 disposed on the protective layer 102 is located between the array substrate 10 and the color filter substrate 20, the bottom of the spacer 30 wraps the thin film transistor 1;

The common electrode 7 disposed on the protective layer 102 corresponds to the position of the pixel electrode 6, and the common electrode 7 has a plurality of slits for cooperating with the pixel electrode 6 to form a driving electric field;

The color filter substrate 20 includes:

The second base substrate 200 is a transparent substrate such as a glass substrate, a quartz substrate, or an organic resin substrate;

The black matrix 8 disposed on the second substrate 200 corresponds to the gate lines and the data line positions on the array substrate 10 for defining a plurality of pixel regions;

a filter layer 9 located in the pixel region, such as a red filter layer, a green filter layer or a blue filter layer;

The flat layer 201 covering the black matrix 8 and the filter layer 9 is covered.

The common electrode 6 may also be disposed on the color film substrate 20, and may be specifically disposed on the flat layer 201. The pixel electrode 6 is disposed on the protective layer 102, and is electrically contacted with the drain electrode 5 through the via hole in the protective layer 102.

A display device, including a display panel in an embodiment of the present disclosure, is further provided in an embodiment of the present disclosure. Thereby improving the quality of the product and the quality of the picture display.

The display device further includes a backlight. The display panel includes an array substrate and a color filter substrate. The backlight is disposed on a side of the array substrate opposite to the color filter substrate, and the color filter substrate is located on one side of the display screen.

The display device may be any product or component having a display function, such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

In the above technical solution, the liquid crystal panel includes an array substrate and a color filter substrate disposed opposite to each other, and a spacer between the array substrate and the color filter substrate, and the array substrate includes a thin film transistor disposed on the base substrate. By setting the projection of the thin film transistor on the substrate to completely fall into the projection of the spacer on the substrate, so that the spacer can protect the thin film transistor from being reflected by the light reflected by the color filter substrate, Improve the performance of thin film transistors and improve the display quality of display devices.

The above is only an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can make several improvements and substitutions without departing from the principles of the disclosed technology. Substitutions are also considered to be the scope of protection of the present disclosure.

Claims

An array substrate, including

a thin film transistor disposed on a base substrate, and

a spacer disposed on the thin film transistor,

Wherein the projection of the thin film transistor on the substrate substrate completely falls into the projection of the spacer on the substrate.
The array substrate according to claim 1, wherein the spacer wraps the thin film transistor.
The array substrate according to claim 1 or 2, wherein the spacer is made of an opaque material.
a display panel, including

Relatively disposed array substrate and color film substrate, and

a spacer located between the array substrate and the color filter substrate,

Wherein the array substrate comprises a thin film transistor disposed on the substrate, the projection of the thin film transistor on the substrate completely falls into a projection of the spacer on the substrate, such that The spacer is capable of blocking light reflected by the color filter substrate from being incident on the thin film transistor.
The display panel according to claim 4, wherein the spacer wraps the thin film transistor.
The display panel according to claim 5, wherein the spacer is disposed on the array substrate or the color filter substrate.
The display panel according to claim 4, wherein a black matrix is disposed on the color filter substrate, and a projection of the spacer on the color filter substrate is completely covered by the black matrix.
The display panel according to any one of claims 4 to 7, wherein the spacer is made of an opaque material.
The display panel according to any one of claims 4 to 7, wherein the spacer has a longitudinal sectional shape of a trapezoid.
A display device comprising the display panel of any of claims 4-9.