WO2020249009A1 - Display panel and display device - Google Patents

Abstract

Provided is a display panel (100), including: an array substrate (110), wherein a common wiring is provided on the array substrate (110); a color filter substrate (130) arranged in a box with the array substrate (110), a common electrode corresponding to the common wiring is provided on the color filter substrate (130); a sealant (150) arranged between the array substrate (110) and the color filter substrate (130), enclosing a liquid crystal housing space (130) with the array substrate (110) and the color filter substrate (130); and a conductive rubber ball (170) embedded in the sealant (150) for conducting the common wiring of the array substrate (110) and the common electrode of the color filter substrate (130); a non-display area (02) of the array substrate (110) includes a transfer area (111) corresponding to the position of the conductive rubber ball (170) and a surrounding area (113) arranged around the transfer area (111); the surface of the array substrate (110) away from the color filter substrate (130) being as a reference, the height of the surrounding area (113) of the array substrate (110) is less than or equal to the maximum height of the transfer area (111) of the array substrate (110).

Description

Display panel and display device

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910494698X, and the invention title is "Display Panel and Display Device" on June 10, 2019, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the display field, and in particular to a display panel and a display device.

Background technique

The statements here only provide background information related to this application, and do not necessarily constitute prior art.

In a VA (Vertical Alignment, vertical alignment technology) type display panel, the liquid crystal is driven by an electric field loaded between the color filter substrate and the array substrate. Set up the transfer area at a suitable position on the array substrate. A first metal layer for transmitting common electrode signals and a transparent conductive layer electrically connected to the first metal layer are provided on the switching area. In the working process, the electrode signals on the common traces of the array substrate can be transmitted to the common electrodes of the color filter substrate through the transparent conductive layer on the transition area and the conductive glue balls arranged on the transition area.

However, during the manufacturing process of the display panel, it is easy to cause the position of the conductive glue ball to deviate from the transfer area, which leads to light leakage.

Summary of the invention

According to various embodiments of the present application, a display panel is provided.

A display panel including:

An array substrate, on which a common wiring is provided;

The color filter substrate is arranged in a box with the array substrate, and a common electrode corresponding to the common wiring is provided on the color filter substrate;

The sealant is arranged between the array substrate and the color filter substrate, and surrounds the array substrate and the color filter substrate to form a liquid crystal housing space; and

Conductive glue balls, embedded in the frame glue, used to connect the common wires of the array substrate and the common electrodes of the color filter substrate;

The non-display area of the array substrate includes a transition area corresponding to the position of the conductive glue ball and a surrounding area provided around the transition area; taking the surface of the array substrate away from the color filter substrate as a reference, The height of the surrounding area of the array substrate is less than or equal to the maximum height of the transfer area of the array substrate.

In the above display panel, the height of the surrounding area of the array substrate is less than or equal to the maximum height of the transfer area of the array substrate, so even if the conductive glue ball deviates from the transfer area, it will not increase the distance between the array substrate and the color filter substrate, thereby Avoid light leakage.

The application also provides a display device including the above-mentioned display panel.

In the above display device, the height of the surrounding area of the array substrate is less than or equal to the height of the transfer area of the array substrate, so even if the conductive glue ball deviates from the transfer area, it will not increase the distance between the array substrate and the color filter substrate, thereby avoiding Light leakage phenomenon.

Description of the drawings

FIG. 1 is a top view of a display panel provided by an embodiment.

Fig. 2 is a partial enlarged cross-sectional view taken along the line M-M in Fig. 1.

FIG. 3 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

FIG. 4 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

FIG. 5 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

FIG. 6 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

FIG. 7 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

FIG. 8 is a partial enlarged cross-sectional view of a display panel provided by another embodiment.

Detailed ways

In order to make the above objectives, features and advantages of the present application more obvious and understandable, the specific implementation of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are explained in order to fully understand this application. However, this application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or a central element may also exist. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the description of the application herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

As shown in FIG. 1 and FIG. 2, the display panel 100 provided in an embodiment includes an array substrate 110, a color filter substrate 130 arranged in a box with the array substrate 110, a sealant 150 and a conductive rubber ball 170.

The array substrate 110 is provided with a common wiring, and the color filter substrate 130 is provided with a common electrode corresponding to the common wiring. The sealant 150 is provided between the array substrate 110 and the color filter substrate 130. The sealant 150, the array substrate 110 and the color filter substrate 130 enclose the liquid crystal accommodating space 120. The conductive rubber ball 170 is embedded in the sealant 150 to connect the common wiring of the array substrate 110 and the common electrode of the color filter substrate 130.

The array substrate 110 includes a display area 01 and a non-display area 02 arranged around the display area 01. The non-display area 02 includes a transfer area 111 corresponding to the position of the conductive rubber ball 170 and a surrounding area 113 disposed around the transfer area 111. Taking the surface of the array substrate 110 away from the color filter substrate 130 as a reference, the height h of the surrounding area 113 of the array substrate 110 is less than or equal to the maximum height H of the transfer area 111 of the array substrate 110.

It can be understood that the display panel 100 shown in FIG. 1 has a rectangular shape. Of course, in other feasible embodiments, the display panel is not limited to a rectangular shape, and may also have a regular or irregular shape such as a circle.

It should be noted that the boundary between the transition area 111 and the surrounding area 113 cannot be directly seen through the top view angle shown in FIG. 1, and the boundary between the transition area 111 and the surrounding area 113 is schematically marked in the form of dotted lines in FIG. 1.

In addition, FIG. 1 only schematically shows the positions of a transit area 111 and a surrounding area 113. In the actual structure, the non-display area of the array substrate 110 is provided with a plurality of transfer areas 111 and a surrounding area 113 corresponding to each transfer area 111.

In this embodiment, the transfer area 111 schematically indicated in FIG. 1 is located in the middle position of the corresponding side of the array substrate 110. It can be understood that, in another feasible embodiment, the position of the transfer area 111 may be reasonably set according to the size of the display panel and the number of conductive glue balls required.

In the display panel 100, the height h of the surrounding area 113 of the array substrate 110 is less than or equal to the maximum height H of the transfer area 111 of the array substrate 110, so even if the conductive glue ball 170 deviates from the transfer area 111, the array substrate 110 will not be enlarged. The distance from the color filter substrate 130 to avoid light leakage.

It is understandable that the liquid crystal accommodating space 120 is provided with liquid crystals, which can be set by conventional means in the art, and will not be repeated here.

Specifically, referring to FIG. 2, in this embodiment, the transfer region 111 of the array substrate 110 includes a substrate 112, a first metal layer 114 provided on the substrate 112, and a first metal layer 114 provided on a partial surface of the first metal layer 114. An inorganic film layer, and a transparent metal layer 119 disposed on the remaining surface of the first metal layer 114 and the first inorganic film layer.

The transparent metal layer 119 is electrically connected to the first metal layer 114. As shown in FIG. 2, the method for electrically connecting the transparent metal layer 119 and the first metal layer 114 in this embodiment is as follows: a via hole 1111 is provided on the first inorganic film layer as deep as the first metal layer 114, and then the transparent The metal layer 119 is deposited or attached in the via hole 1111.

It should be noted that a plurality of via holes 1111 are provided on the transfer area 111 of each array substrate 110, so as to better realize the electrical connection between the first metal layer 114 and the transparent metal layer 119. Only three via holes 1111 are schematically indicated in FIG. 2.

In this embodiment, the conductive glue ball 170 may be a silver glue ball or a gold glue ball. It can be understood that the conductive rubber ball 170 is a mixture of elastic colloidal material and conductive metal such as gold or silver, and the conductive rubber ball 170 has certain elasticity. Therefore, when the conductive glue ball 170 is placed on the transfer area 111, the conductive glue ball 170 can be in surface contact with the transfer area 111 of the array substrate 110. At the same time, it can be understood that the contact area between the transfer area 111 and the conductive glue ball 170 corresponds to a plurality of via holes 1111.

In addition, since the conductive glue ball 170 has elasticity, its height along the direction perpendicular to the display panel 100 is slightly larger than the distance between the array substrate 110 and the color filter substrate 130 in the corresponding area, so the conductive adhesive between the array substrate 110 and the color filter substrate 130 The glue ball 170 is in a compressed state, so that the conductive glue ball 170 can be more firmly arranged between the array substrate 110 and the color filter substrate 130.

Since the conductive glue ball 170 between the array substrate 110 and the color filter substrate 130 is in a compressed state, even if the position of the conductive glue ball 170 deviates from the transition area 111, both ends of the conductive glue ball 170 can be connected to the common area of the array substrate 110. The wiring is in contact with the common electrode of the color filter substrate 130, so that the electrode signal on the common wiring of the array substrate 110 can be transmitted to the common electrode of the color filter substrate 130.

It can be understood that the parts located on both sides of the transition area 111 in FIG. 2 are the surrounding area 113. In this embodiment, the surrounding area 113 includes a substrate 112, a first metal layer 114 provided on the substrate 112, and a second inorganic film layer provided on the first metal layer 114.

More specifically, in this embodiment, the first metal layer 114 is a gate layer. The common wiring of the array substrate 110 is a gate metal wiring. Generally, in order to facilitate the curing of the sealant 150 and the conductive rubber ball 170, the common wiring is hollow.

2, in this embodiment, the first inorganic film layer includes a dielectric layer 116 (GI layer) provided on the first metal layer 114 and a passivation layer 118 (PV layer) provided on the dielectric layer 116. The second inorganic film layer includes a dielectric layer 116. The height h of the surrounding area 113 of the array substrate 110 is smaller than the maximum height H of the transfer area 111 of the array substrate 110. As shown in FIG. 2, the maximum height H of the transit region 111 = (the thickness of the substrate 112 + the thickness of the first metal layer 114 + the thickness of the dielectric layer 116 + the thickness of the passivation layer 118 + the thickness of the transparent metal layer 119) .

It can be understood that the dielectric layer 116 corresponds to the inorganic film layer between the gate and the source/drain layer in the display area 01 of the display panel 100. The passivation layer 118 corresponds to the inorganic film layer located in the source/drain layer away from the gate layer in the display area 01 of the display panel 100.

Compared with the transfer area 111 of the array substrate 110, the surrounding area 113 of the array substrate 110 lacks the passivation layer 118 and the transparent metal layer 119, so the height h of the surrounding area 113 of the array substrate 110 is smaller than the transfer area of the array substrate 110 The maximum height H of 111.

Referring to FIG. 3, the display panel 200 provided in another embodiment is substantially the same as the display panel 100, except that the second inorganic film layer includes a passivation layer 218. The first inorganic film layer still includes a dielectric layer 216 and a passivation layer 218.

Compared with the transfer area 211 of the array substrate, the surrounding area of the array substrate has less dielectric layer 216 and transparent metal layer 219, so the height h of the surrounding area of the array substrate is smaller than the maximum height H of the transfer area 211 of the array substrate.

Referring to FIG. 4, a display panel 300 provided in another embodiment is substantially the same as the display panel 100, except that the second inorganic film layer includes a dielectric layer 316 and a passivation layer 318. The first inorganic film layer still includes the dielectric layer 316 and the passivation layer 318.

Compared with the transfer area 311 of the array substrate, the surrounding area of the array substrate has less transparent metal layer 319, so the height h of the surrounding area of the array substrate is smaller than the maximum height H of the transfer area 311 of the array substrate.

Referring to FIG. 5, a display panel 400 provided by another embodiment is substantially the same as the display panel 100, except that the first inorganic film layer includes a dielectric layer 416. The second inorganic film layer still includes the dielectric layer 416.

Compared with the transfer area 411 of the array substrate, the surrounding area of the array substrate has less transparent metal layer 419, so the height h of the surrounding area of the array substrate is smaller than the maximum height H of the transfer area 411 of the array substrate.

Similarly, in another embodiment, it may be further provided that the first inorganic film layer includes a passivation layer, and the second inorganic film layer includes a passivation layer. Or, the first inorganic film layer includes a dielectric layer, and the second inorganic film layer includes a passivation layer. Or, the first inorganic film layer includes a drain insulating layer, and the second inorganic film layer includes a dielectric layer. In this way, the height of the surrounding area of the array substrate can be smaller than the maximum height of the transfer area of the array substrate.

Referring to FIG. 6, the display panel 500 provided in another embodiment is substantially the same as the display panel 300, except that the surrounding area of the array substrate further includes a transparent metal layer 519 provided on the second inorganic film layer.

The height h of the surrounding area of the array substrate is equal to the maximum height H of the transfer area of the array substrate. Therefore, even if the position of the conductive glue ball 570 deviates, the distance between the array substrate and the color filter substrate will not be increased, thereby avoiding light leakage. At the same time, the force between the two ends of the conductive glue ball 570 and the array substrate and the color filter substrate will not change, and the conductive glue ball 570 will not be deformed, so the two ends of the conductive glue ball 570 and the array substrate will not be reduced. The electrical connection performance of the common wiring and the common electrode of the color filter substrate.

Furthermore, the transparent metal layer 519 is electrically connected to the first metal layer, thereby reducing the current in the first metal layer, reducing the large-area static electricity accumulation phenomenon caused by friction, and preventing electrostatic breakdown.

Referring to FIG. 7, the display panel 600 provided by another embodiment is substantially the same as the display panel. The difference 400 is that the surrounding area of the array substrate further includes a transparent metal layer 619 provided on the second inorganic film layer.

The height h of the surrounding area of the array substrate is equal to the maximum height H of the transfer area 611 of the array substrate.

It should be noted that, in another feasible embodiment, the first metal layer is not limited to the gate layer. For example, the first metal layer is a source/drain layer. Correspondingly, the first inorganic film layer is a passivation layer, and the second inorganic film layer is a passivation layer. Of course, the transfer area of the array substrate also includes a transparent metal layer provided on the first inorganic film layer. The second inorganic film layer in the surrounding area of the array substrate may or may not be provided with a transparent metal layer.

If a transparent metal layer is provided on the second inorganic film layer in the surrounding area of the array substrate, the structural schematic diagram of the display panel is the same as the schematic diagram of the display panel 600 shown in FIG. 7, but the first metal layer in the display panel needs to be changed. For the source/drain layer, change the dielectric layer to a passivation layer. At this time, the height h of the surrounding area of the array substrate is equal to the maximum height H of the transfer area of the array substrate.

If the transparent metal layer is not provided on the second inorganic film layer in the surrounding area of the array substrate, the structural diagram of the display panel is the same as that of the display panel 400 shown in FIG. 5, but the first metal layer in the display panel Change to source/drain layer, and change the dielectric layer to a passivation layer. At this time, the height h of the surrounding area of the array substrate is smaller than the maximum height H of the transfer area of the array substrate.

Referring to FIG. 8, the display panel 700 provided by another embodiment is substantially the same as the display panel 100, except that the transfer area 711 and the surrounding area of the array substrate 710 both have two metal layers.

Specifically, the transfer area 711 of the array substrate 710 includes a substrate 712, a first metal layer 714 provided on the substrate 712, a first inorganic film layer provided on a part of the surface of the first metal layer 714, The second metal layer 717 on the inorganic film layer, the third inorganic film layer on the second metal layer 717, and the transparent metal layer 719 on the remaining surface of the first metal layer 714 and the third inorganic film layer. The transparent metal layer 719 is electrically connected to the first metal layer 714 and the second metal layer 717. The first inorganic film layer, the second metal layer 717, and the third inorganic film layer are provided with a plurality of via holes (not labeled) as deep as the first metal layer 714, so that the transparent metal layer 719 and the first metal layer 714 and The second metal layer 717 is electrically connected.

The surrounding area of the array substrate 710 includes a substrate 712, a first metal layer 714 disposed on the substrate 712, a second inorganic film layer disposed on the first metal layer 714, and a second inorganic film layer disposed on the second inorganic film layer. The metal layer 717 and the fourth inorganic film layer disposed on the second metal layer 717.

More specifically, in this embodiment, the first metal layer 714 is a gate layer, and the second metal layer 716 is a source/drain layer. Both the first inorganic film layer and the second inorganic film layer are dielectric layers 716, and the third inorganic film layer and the fourth inorganic film layer are both passivation layers 718.

Compared with the transfer area 711 of the array substrate 710, the surrounding area of the array substrate has less transparent metal layer 719, so the height h of the surrounding area of the array substrate 710 is smaller than the maximum height H of the transfer area 711 of the array substrate 710.

Further, in another embodiment, a transparent metal layer may be provided on the fourth inorganic film layer in the surrounding area of the array substrate 710, so that the height of the surrounding area 713 of the array substrate 710 is equal to the transition area of the array substrate 710 The maximum height of 711.

It should be noted that, in another embodiment, the first metal layer 714 is not limited to the gate layer, and the second metal layer 716 is not limited to the source/drain layer, and only two metal layers are arranged in sequence. Correspondingly, the first inorganic film layer, the second inorganic film layer, the third inorganic film layer, and the fourth inorganic film layer can be adjusted accordingly to meet the requirement that the height of the surrounding area 713 of the array substrate 710 is less than or equal to the transition of the array substrate 710 The maximum height of area 711 is sufficient.

It can be understood that the structure of the display panel 100 is not limited to the above-mentioned structure, and the height of the surrounding area 113 of the array substrate 110 is less than or equal to the maximum height of the transfer area 111 of the array substrate 110.

In one embodiment, the surrounding area 113 of the array substrate 110 is an area of the non-display area 02 of the array substrate 110 excluding the transfer area 111. In this way, the structure of the non-display area 02 of the array substrate 110 can be made simpler, and the manufacturing process of the array substrate can be made simpler.

The application also provides a display device, which includes the above-mentioned display panel.

In the above display device, the height of the surrounding area 113 of the array substrate 110 is less than or equal to the maximum height of the transfer area 111 of the array substrate 110, so even if the conductive glue ball 170 deviates from the transfer area 111, the array substrate 110 and the color film will not be enlarged. The distance between the substrates 130 so as to avoid light leakage.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express a few implementation modes of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims (19)

A display panel including: An array substrate, the array substrate is provided with a common wiring, the array substrate includes a display area and a non-display area surrounding the display area; The color filter substrate is arranged in a box with the array substrate, and a common electrode corresponding to the common wiring is provided on the color filter substrate; The sealant is arranged between the array substrate and the color filter substrate, and surrounds the array substrate and the color filter substrate to form a liquid crystal housing space; and A conductive glue ball is embedded in the frame glue for conducting the common trace and the common electrode. The non-display area of the array substrate includes a transfer area corresponding to the conductive glue ball and A surrounding area provided around the transfer area; Wherein, taking the surface of the array substrate away from the color filter substrate as a reference, the height of the surrounding area is less than or equal to the maximum height of the transition area. The display panel according to claim 1, wherein the transfer region comprises a substrate, a first metal layer provided on the substrate, and a first inorganic film layer provided on a part of the surface of the first metal layer , And a transparent metal layer provided on the remaining surface of the first metal layer and the first inorganic film layer, the transparent metal layer being electrically connected to the first metal layer; The surrounding area includes the substrate, the first metal layer provided on the substrate, and a second inorganic film layer provided on the first metal layer. 3. The display panel according to claim 2, wherein the first inorganic film layer includes a dielectric layer and a passivation layer provided on the dielectric layer; and the second inorganic film layer includes the dielectric layer. 3. The display panel according to claim 2, wherein the first inorganic film layer comprises a dielectric layer and a passivation layer provided on the dielectric layer; the second inorganic film layer is the passivation layer. The display panel according to claim 2, wherein the first inorganic film layer includes a dielectric layer and a passivation layer provided on the dielectric layer; the second inorganic film layer includes the dielectric layer and a passivation layer provided on the dielectric layer. The passivation layer on the dielectric layer. 8. The display panel of claim 5, wherein the surrounding area further comprises the transparent metal layer provided on the passivation layer, and the maximum height of the surrounding area is equal to the height of the transit area. 3. The display panel of claim 2, wherein the first inorganic film layer is a dielectric layer; and the second inorganic film layer is the dielectric layer. 8. The display panel according to claim 7, wherein the surrounding area further comprises the transparent metal layer provided on the dielectric layer, and the maximum height of the surrounding area is equal to the height of the transit area. 3. The display panel according to claim 2, wherein the first inorganic film layer is a passivation layer; and the second inorganic film layer is the passivation layer. 3. The display panel of claim 2, wherein the first inorganic film layer is a dielectric layer; and the second inorganic film layer is a passivation layer. 3. The display panel of claim 2, wherein the first inorganic film layer is a passivation layer; and the second inorganic film layer is a dielectric layer. 4. The display panel of claim 2, wherein the first inorganic film layer is a drain insulating layer, and the second inorganic film layer is a dielectric layer. 3. The display panel of claim 2, wherein the first metal layer is a gate layer. The display panel according to claim 2, wherein the first metal layer is a source/drain layer. The display panel according to claim 1, wherein the transfer region comprises a substrate, a first metal layer provided on the substrate, and a first inorganic film layer provided on a part of the surface of the first metal layer , The second metal layer provided on the first inorganic film layer, the third inorganic film layer provided on the second metal layer, and the remaining surface of the first metal layer and the third inorganic film layer A transparent metal layer on the film layer; the transparent metal layer is electrically connected to the first metal layer and the second metal layer; The surrounding area includes the substrate, the first metal layer provided on the substrate, the second inorganic film layer provided on the first metal layer, and the second inorganic film layer provided on the first metal layer. The second metal layer on the two inorganic film layers and the fourth inorganic film layer on the second metal layer. 15. The display panel according to claim 15, wherein the first inorganic film layer and the second inorganic film layer are both dielectric layers, and the third inorganic film layer and the fourth inorganic film layer are both passivation Floor. 15. The display panel of claim 15, wherein the surrounding area further comprises the transparent metal layer provided on the fourth inorganic film layer, and the maximum height of the surrounding area is equal to the height of the transition area. 3. The display panel according to claim 1, wherein the surrounding area of the array substrate is an area of the non-display area of the array substrate excluding the transfer area. A display device comprising the display panel according to claim 1.

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