CN111025815A

CN111025815A - Display panel and display device

Info

Publication number: CN111025815A
Application number: CN202010003232.8A
Authority: CN
Inventors: 许文钦; 秦锋; 刘金娥; 孔祥建; 席克瑞; 曾程
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-04-17
Anticipated expiration: 2040-01-02
Also published as: CN111025815B

Abstract

The invention discloses a display panel and a display device. The display panel includes: a first substrate; a second substrate; display plasma, and an isolation assembly located between the first substrate and the second substrate and separating the display plasma into a plurality of plasma units corresponding to the plurality of pixel electrodes, respectively, the isolation assembly including: a first retaining wall unit extending in a first direction; and a second retaining wall unit extending along a second direction, the second direction intersecting the first direction, wherein one of the first retaining wall unit and the second retaining wall unit is disposed on the first substrate, the other one is disposed on the second substrate, a meeting region is provided between the first retaining wall unit and the second retaining wall unit, and at least one meeting region is provided with a first breaking portion allowing the second retaining wall unit to pass through. According to the display panel provided by the embodiment of the invention, abnormal bulges in the meeting area of the display panel in the manufacturing process can be avoided, and the assembly effect of the display panel is improved.

Description

Display panel and display device

Technical Field

The invention relates to the field of display, in particular to a display panel and a display device.

Background

With the development of electronic technology and the increase of environmental protection pressure, people desire a display medium integrating the advantages of traditional paper and modern digital display technology, and the electronic paper is produced at the same time.

An electronic paper, i.e. an electrophoretic display panel, generally includes a first substrate, a second substrate and a display plasma (or electrophoretic fluid) between the first substrate and the second substrate. The display plasma needs to be divided into a plurality of regions corresponding to the pixels by the barrier structures.

In the prior art, the thickness of the barrier structures for separating the plasma display is greatly different between the intersection position and other regions, and the thickness of the intersection position of the barrier structures is usually greater than the thickness of other barrier regions, so that the distance between the first substrate and the second substrate needs to be increased, which affects the assembly effect.

Disclosure of Invention

The invention provides a display panel and a display device, which can reduce the thickness of the cross position of retaining walls and improve the assembly effect of the display panel.

In a first aspect, an embodiment of the present invention provides a display panel, which includes: a first substrate including a plurality of pixel electrodes arranged in an array; a second substrate disposed opposite to the first substrate, the second substrate including a common electrode; display plasma located between the first substrate and the second substrate, and an isolation component located between the first substrate and the second substrate and dividing the display plasma into a plurality of plasma units corresponding to the plurality of pixel electrodes, respectively, the isolation component comprising: a plurality of first retaining wall units, each extending in a first direction; and a plurality of second retaining wall units, each second retaining wall unit extends along a second direction, the second direction is crossed with the first direction, wherein one of the first retaining wall unit and the second retaining wall unit is arranged on the first substrate, the other one is arranged on the second substrate, a meeting area is arranged between the first retaining wall unit and the second retaining wall unit, and the first retaining wall unit is provided with a first breaking part allowing the second retaining wall unit to pass through at least one meeting area.

In a second aspect, an embodiment of the present invention provides a display device, which includes the display panel according to any one of the foregoing embodiments.

According to the display panel of the embodiment of the invention, the isolation assembly comprises a first retaining wall unit extending along the first direction and a second retaining wall unit extending along the second direction. The first retaining wall unit and the second retaining wall unit are arranged on the first substrate, the other retaining wall unit is arranged on the second substrate, and in at least one meeting area, the first retaining wall unit is provided with a first breaking part allowing the second retaining wall unit to pass through, so that the entity cross structure between the first retaining wall unit and the second retaining wall unit is reduced, abnormal bulges generated in the meeting area of the display panel in the manufacturing process are avoided, the distance between the first substrate and the second substrate does not need to be adjusted, and the assembling effect of the display panel is improved.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

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

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is a schematic top view of a portion of an isolation assembly in a display panel according to an embodiment of the invention;

FIG. 4 is a schematic top view of a portion of an isolation assembly in a display panel according to another embodiment of the invention;

FIG. 5 is a schematic top view of a portion of an isolation assembly in a display panel according to another embodiment of the invention;

FIG. 6 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to an embodiment of the invention;

FIG. 7 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to another embodiment of the present invention;

FIG. 8 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the present invention;

FIG. 9 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the present invention;

FIG. 10 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the present invention;

FIG. 11 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the present invention;

FIG. 12 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the present invention;

FIG. 13 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

Embodiments of the present invention provide a display panel for performing display using display plasma, and the following description will discuss various embodiments of the display panel in detail.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a cross-sectional view taken along direction B-B in fig. 1. The display panel 100 has a display area AA and a non-display area NA surrounding at least a portion of the periphery of the display area AA. The display panel includes a plurality of pixels PX arranged in the display area AA, the plurality of pixels PX being arranged in a plurality of rows and columns, for example, in an array, each row of pixels PX including a plurality of pixels PX arranged in the first direction X, and each column of pixels PX including a plurality of pixels PX arranged in the second direction Y.

The display panel 100 may include a gate driving circuit 101 and a data driving circuit 102 disposed in the non-display area NA. Each row of pixels PX is electrically connected to the gate driving circuit 101 through a corresponding gate line GL to receive a scanning signal of the gate driving circuit 101. Each column of pixels PX is electrically connected to the data driving circuit 102 through a corresponding data line SL to receive a data signal of the data driving circuit 102.

The display panel 100 includes a first substrate 110, a second substrate 120, a display plasma 130, and an isolation element 140. The first substrate 110 includes a plurality of pixel electrodes 111 arranged in an array. The second substrate 120 is disposed opposite to the first substrate 110, and the second substrate 120 includes a common electrode 121. The plasma 130 is shown between the first substrate 110 and the second substrate 120. The isolation member 140 is disposed between the first substrate 110 and the second substrate 120, and separates the display plasma 130 into a plurality of plasma units PU corresponding to the plurality of pixel electrodes 111, respectively.

One pixel electrode 111 is provided for each pixel PX. The size of the pixel electrode 111 can be adjusted according to the design requirements of the display panel 100. In some embodiments, the edge of the pixel electrode 111 may overlap with the orthogonal projection of the isolation element 140 on the plane of the pixel electrode 111, so that the plasma unit PU can also be subjected to the action of the electric field with a larger intensity in the edge area close to the isolation element 140, thereby avoiding the problem of poor display caused by the smaller electric field intensity at the edge of the plasma unit PU.

In some embodiments, the first substrate 110 includes a first substrate 112 and a device layer 113 located on a side of the first substrate 112 facing the second substrate 120, and a thin film transistor T1 is formed in the device layer 113. One thin film transistor T1 is provided for each pixel PX. Taking the thin film transistor T1 as an example of a bottom gate structure, the thin film transistor T1 of the embodiment of the present invention is not limited to the bottom gate structure, and may also be a top gate structure, the thin film transistor T1 includes a gate electrode on the first substrate 112, a gate insulating layer on the gate electrode, a semiconductor layer on the gate insulating layer, and a source electrode and a drain electrode that are in contact with the semiconductor layer at both sides of the gate electrode, respectively, the semiconductor layer of the embodiment of the present invention may be amorphous silicon, an oxide semiconductor, or the like, and is not limited herein.

For each pixel PX, one of a source and a drain of the thin-film transistor T1 is connected to the pixel electrode 111, the other is connected to the data line SL, and a gate of the thin-film transistor T1 is connected to the gate line GL.

The second substrate 120 includes a second substrate 122, and the common electrode 121 is disposed on a side of the second substrate 122 facing the first substrate 110.

The first substrate 110 and the second substrate 120 are disposed opposite to each other and connected to each other by a connecting member. Wherein the connecting member is disposed around the periphery of the display area AA. The connecting piece can be made of frame glue or other non-light-transmitting glue layers.

The first substrate 112 and the second substrate 122 may be transparent substrates, and are made of glass or Polyimide (PI), for example. The pixel electrode 111 and the common electrode 121 are both transparent electrodes, and are formed of a transparent conductive material such as Indium Tin Oxide (ITO).

As used herein, display plasma refers to a slurry containing electrically conductive particles for display. The display plasma 130 includes at least two types of electrophoretic particles with photoelectric properties, and the colors of the electrophoretic particles include, but are not limited to, white, black, red, green, blue, yellow, and so on, so as to correspondingly realize display modes such as black-and-white display, single-color display, dual-color display, multi-color display, true-color display, and so on. The display plasma 130 may include a fluorescent material, such as an inorganic fluorescent material, such as a rare earth fluorescent material or a metal sulfide, or an organic fluorescent material, such as a small molecule fluorescent material or a polymer fluorescent material.

Taking the example of the display plasma 130 containing white particles and black particles as an example, the white particles and the black particles have different electrical properties. The different electrical property can be that the white particles and the black particles have different polarities, such as positive polarity and negative polarity, respectively; the white particles and the black particles may have the same polarity, but the white particles and the black particles have different sensitivity to the electric field, and the white particles and the black particles move according to the magnitude and direction of the electric field under the condition of changing the electric field strength, so as to realize display. Therefore, when the electric field applied between the pixel electrode 111 and the common electrode 121 is changed, the white particles and the black particles move under the action of the electric field, so that the corresponding pixel PX appears white or black on the display surface, and black and white display of the display panel 100 is realized.

In other embodiments, color display can be achieved in a manner similar to black and white display described above by disposing colored electrophoretic particles in the display plasma 130. In addition, the display panel 100 according to the embodiment of the present invention may implement color display in other ways. For example, in some embodiments, the second substrate 120 further includes a plurality of color filter units corresponding to the plurality of pixel electrodes 111, respectively. The plurality of color filter units include, for example, a red filter unit, a green filter unit, and a blue filter unit. The display plasma 130 is configured with white particles and black particles, wherein the white particles can reflect the ambient light and display the corresponding color when passing through the color filter unit.

In some embodiments, the isolation component 140 is made of a thermosetting material, such as a polymer resin material, such as acrylic resin.

FIG. 3 is a schematic top view of a portion of an isolation assembly in a display panel according to an embodiment of the invention. The isolation assembly 140 includes a plurality of first wall units 141 and a plurality of second wall units 142. Each first retaining wall unit 141 extends in the first direction X. Each of the second blocking wall units 142 extends along a second direction Y, which intersects the first direction X. In some embodiments, the first direction X is a row direction in which the plurality of pixels PX are arranged, and the second direction Y is a column direction in which the plurality of pixels PX are arranged. The first direction X and the second direction Y may be perpendicular to each other. The first direction X and the second direction Y are not limited to the above examples, and may be other extending directions intersecting each other. The first direction X and the second direction Y can be exchanged with each other, and accordingly, the first retaining wall unit 141 and the second retaining wall unit 142 can be exchanged with each other.

In this embodiment, the extending direction of the first bank unit 141 is the same as the extending direction of the gate line GL, and the extending direction of the second bank unit 142 is the same as the extending direction of the data line SL. In some embodiments, an orthographic projection of each gate line GL on the first substrate 112 overlaps with an orthographic projection of a corresponding one of the first dam units 141 on the first substrate 112; the orthographic projection of each data line SL on the first substrate 112 overlaps with the orthographic projection of a corresponding second barrier wall unit 142 on the first substrate 112, so that the occupied areas of the gate line GL, the data line SL and the isolation element 140 on a plane parallel to the first substrate 112 are reduced, and the aperture ratio of the display panel 100 can be improved.

In some embodiments, one of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, and the other is disposed on the second substrate 120. For example, in the embodiment, the first wall unit 141 is disposed on the second substrate 120, and the second wall unit 142 is disposed on the first substrate 110, wherein the first wall unit 141 is located on the side of the second substrate 120 facing the first substrate 110, and the second wall unit 142 is located on the side of the first substrate 110 facing the first substrate 110. It is understood that in other embodiments, the first retaining wall unit 141 may be disposed on the first substrate 110, and the second retaining wall unit 142 may be disposed on the second substrate 120.

A meeting region 143 is formed between the first retaining wall unit 141 and the second retaining wall unit 142. Herein, the meeting region 143 between the first wall unit 141 and the second wall unit 142 refers to a region where the extending axis of the first wall unit 141 and the extending axis of the second wall unit 142 cross, and the meeting region 143 has an intersection of the extending axes, not necessarily an intersection of the solid structures of the first wall unit 141 and the second wall unit 142.

In at least one meeting area 143, the first wall unit 141 is provided with a first breaking portion 1411 allowing the second wall unit 142 to pass therethrough.

According to the display panel 100 of the embodiment of the invention, the isolation assembly 140 includes a first barrier unit 141 extending along the first direction X and a second barrier unit 142 extending along the second direction Y. One of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, the other is disposed on the second substrate 120, and in at least one meeting area 143, the first retaining wall unit 141 is provided with a first breaking portion 1411 allowing the second retaining wall unit 142 to pass through, so that the solid structure of the first retaining wall unit 141 and the solid structure of the second retaining wall unit 142 can be mutually avoided, and the solid cross structure between the first retaining wall unit 141 and the second retaining wall unit 142 is reduced, thereby preventing the meeting area 143 of the display panel 100 from generating abnormal protrusions in the manufacturing process, and improving the assembling effect of the display panel 100 without adjusting the distance between the first substrate 110 and the second substrate 120. In the foregoing abnormal protrusion, for example, in the display panel of the prior art, when the material forming the isolation assembly is baked, the collapse degree of the first retaining wall unit and the second retaining wall unit is greater than the collapse degree of the solid cross structure between the first retaining wall unit and the second retaining wall unit, because if the pattern density of the retaining wall is higher at the solid cross position, the retaining wall is less likely to collapse during baking.

In the above embodiment, the first retaining wall unit 141 is provided with the first breaking portion 1411 that allows the second retaining wall unit 142 to pass through, but the manner of providing the breaking portion on the retaining wall unit may not be limited thereto.

Fig. 4 is a schematic top view of a portion of an isolation assembly in a display panel according to another embodiment of the invention. The isolation assembly 140 includes a plurality of first wall units 141 and a plurality of second wall units 142. Each first retaining wall unit 141 extends in the first direction X. Each of the second blocking wall units 142 extends along a second direction Y, which intersects the first direction X. One of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, and the other is disposed on the second substrate 120.

In the embodiment, in at least one meeting area 143, the second retaining wall unit 142 is provided with a second breaking portion 1421 allowing the first retaining wall unit 141 to pass through, so that the solid structure of the second retaining wall unit 142 and the solid structure of the first retaining wall unit 141 can be mutually avoided, and the solid cross structure between the first retaining wall unit 141 and the second retaining wall unit 142 can also be reduced, thereby preventing the meeting area 143 of the display panel 100 from generating an abnormal protrusion in the manufacturing process, eliminating the need to adjust the distance between the first substrate 110 and the second substrate 120, and improving the assembling effect of the display panel 100.

In addition, in the case of no conflict, the embodiments of the present invention may be combined according to actual needs. For example, in fig. 4, in a part of the meeting area 143, the first wall unit 141 is provided with a first breaking portion 1411 for allowing the second wall unit 142 to pass through, and in another part of the meeting area 143, the second wall unit 142 is provided with a second breaking portion 1421 for allowing the first wall unit 141 to pass through.

FIG. 5 is a schematic top view of a portion of an isolation assembly in a display panel according to another embodiment of the invention. The isolation assembly 140 includes a plurality of first wall units 141 and a plurality of second wall units 142. Each first retaining wall unit 141 extends in the first direction X. Each of the second blocking wall units 142 extends along a second direction Y, which intersects the first direction X. One of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, and the other is disposed on the second substrate 120.

In this embodiment, in at least one meeting area 143, the first retaining wall unit 141 is provided with a first breaking portion 1411 for allowing the second retaining wall unit 142 to pass through, and the second retaining wall unit 142 is provided with a second breaking portion 1421 for allowing the first retaining wall unit 141 to pass through.

In fig. 5, in a part of the meeting area 143, the first retaining wall unit 141 is provided with a first breaking portion 1411 for allowing the second retaining wall unit 142 to pass through, and the second retaining wall unit 142 is not provided with a second breaking portion 1421; in a part of the meeting region 143, the second retaining wall unit 142 is provided with a second breaking portion 1421 allowing the first retaining wall unit 141 to pass through, and the first retaining wall unit 141 is not provided with the first breaking portion 1411; in a part of the meeting area 143, the first wall unit 141 is provided with a first breaking portion 1411 for allowing the second wall unit 142 to pass through, and the second wall unit 142 is provided with a second breaking portion 1421 for allowing the first wall unit 141 to pass through, i.e., the meeting area 143 is provided with both the first breaking portion 1411 and the second breaking portion 1421.

The above is only a part of the example of the barrier assembly 140 in the display panel 100 according to the embodiment of the present invention, however, the barrier assembly 140 may have various types of structures in the meeting area 143 thereof, and the barrier assembly 140 according to various alternative embodiments of the display panel 100 will be described with reference to a partially enlarged view of the meeting area.

FIG. 6 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to an embodiment of the invention. The first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. The distance D1 between the end of the first sub-retaining wall 1412 and the second retaining wall unit 142 in the first direction X is 3 to 4.5 micrometers. By limiting the distance D1 between the end of the first sub-retaining wall 1412 and the second retaining wall unit 142 in the first direction X, the problem of mutual leakage between adjacent plasma units PU due to the excessive distance D1 is alleviated while ensuring good clearance between the first retaining wall unit 141 and the second retaining wall unit 142. In addition, the distance D1 reserved between the end of the first sub-retaining wall 1412 and the second retaining wall unit 142 in the first direction X can improve the fault tolerance of the bonding alignment between the first substrate 110 and the second substrate 120, and improve the yield of products.

FIG. 7 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to another embodiment of the invention. The first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. The second blocking wall unit 142 is provided with a first blocking structure 1423 extending from at least one side surface of the second blocking wall unit 142 to the first direction X. The first shielding structure 1423 is located on at least one side of the first breaking portion 1411 in the second direction Y. Through setting up first sheltering from structure 1423, can alleviate the problem of revealing each other between adjacent electric thick liquid unit PU to a certain extent.

As shown in fig. 7, the second barrier wall unit 142 includes a first side S1 and a second side S2 opposite to each other. Here, the position of the first shielding structure 1423 disposed on the first side surface S1 in the second direction Y does not overlap with the position of the first shielding structure 1423 disposed on the second side surface S2 in the second direction Y.

In some embodiments, the length D2 of each first shielding structure 1423 in the first direction X is greater than or equal to 3 times the distance D1 between the end of the first sub-retaining wall 1412 and the second retaining wall unit 142 in the first direction X.

In some embodiments, the number of the first shielding structures 1423 in the meeting area 143 is two. Of the two first shielding structures 1423, one first shielding structure 1423 is located on the first side surface S1 and on one side of the first broken portion 1411 in the second direction Y, and the other first shielding structure 1423 is located on the second side surface S2 and on the other side of the first broken portion 1411 in the second direction Y. By dispersedly disposing the first shielding structures 1423, the leakage between the adjacent plasma units PU is further reduced, and the sealing capability of the isolation component 140 is improved.

FIG. 8 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention. The first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. The second blocking wall unit 142 is provided with a first blocking structure 1423 extending from at least one side surface of the second blocking wall unit 142 to the first direction X. The first shielding structure 1423 is located on at least one side of the first breaking portion 1411 in the second direction Y.

The second blocking wall unit 142 includes opposite first and second sides S1 and S2. The number of the first shielding structures 1423 is two. Of the two first shielding structures 1423, one first shielding structure 1423 is located on the first side surface S1 and on one side of the first broken portion 1411 in the second direction Y, and the other first shielding structure 1423 is located on the second side surface S2 and on the other side of the first broken portion 1411 in the second direction Y.

As shown in fig. 8, in the meeting area 143, the second retaining wall unit 142 is provided with a second breaking portion 1421 allowing the first retaining wall unit 141 to pass through. The second breaking portion 1421 is disposed between the two first shielding structures 1423. The second retaining wall unit 142 includes second sub-retaining walls 1422 partitioned by a plurality of second breaks 1421.

FIG. 9 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention. Most of the structure of the embodiment related to fig. 9 is similar to that of the embodiment related to fig. 8, and will not be described in detail.

Unlike the embodiment of fig. 8, in this embodiment, the isolation assembly 140 further includes a center post 144. The central pillar 144 is disposed at the center of the first breaking portion 1411 and the second breaking portion 1421 in the meeting region 143, and the central pillar 144 is disposed at an interval with the first retaining wall unit 141 and the second retaining wall unit 142. In the meeting region 143 having the first and

second breaking portions

1411 and 1421, the central column 144 is provided to fill a predetermined area of the breaking region, thereby further reducing the mutual leakage between the adjacent plasma units PU.

FIG. 10 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention. Most of the structure of the embodiment related to fig. 10 is similar to that of the embodiment related to fig. 9, and will not be described in detail.

Unlike the embodiment of fig. 9, in the present embodiment, in the meeting area 143, at least one first sub-retaining wall 1412 is provided with a second shielding structure 1413 extending from at least one side surface of the first sub-retaining wall 1412 to the second direction Y. By arranging the second shielding structure 1413, the problem of mutual leakage between the adjacent plasma units PU can be alleviated to a certain extent.

As shown in fig. 10, the first retaining wall unit 141 includes a third side surface S3 and a fourth side surface S4, which are opposite to each other, wherein a position of the second shielding structure 1413 provided on the third side surface S3 in the first direction X does not overlap a position of the second shielding structure 1413 provided on the fourth side surface S4 in the first direction X.

Referring to fig. 10, in the meeting area 143, the number of the second shielding structures 1413 is two. Of the two second shielding structures 1413, one second shielding structure 1413 is located on the third side S3 and on one side of the second disconnection portion 1421 in the first direction X, and the other second shielding structure 1413 is located on the fourth side S4 and on the other side of the second disconnection portion 1421 in the first direction X. By the distributed arrangement of the second shielding structures 1413, the leakage between the adjacent plasma units PU is further reduced, and the sealing capability of the isolation component 140 is improved.

In the above embodiment, the first blocking structure 1423 linearly extends from the side surface of the second wall unit 142 in the first direction X, and the second blocking structure 1413 linearly extends from the side surface of the first sub-wall 1412 in the second direction Y. However, the extending shape of the first and

second shielding structures

1423 and 1413 may not be limited thereto.

FIG. 11 is a schematic top view illustrating a meeting area of a portion of an isolation device in a display panel according to another embodiment of the invention. Fig. 11 relates to an embodiment in which the first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. The second blocking wall unit 142 is provided with a first blocking structure 1423 extending from at least one side surface of the second blocking wall unit 142 to the first direction X. The second blocking wall unit 142 includes opposite first and second sides S1 and S2. In the meeting area 143, the number of the first shielding structures 1423 is two. Of the two first shielding structures 1423, one first shielding structure 1423 is located on the first side surface S1 and on one side of the first broken portion 1411 in the second direction Y, and the other first shielding structure 1423 is located on the second side surface S2 and on the other side of the first broken portion 1411 in the second direction Y.

In the meeting region 143, at least one first sub-retaining wall 1412 is provided with a second shielding structure 1413 extending from at least one side surface of the first sub-retaining wall 1412 in the second direction Y. The first wall unit 141 includes opposite third and fourth sides S3 and S4. In the meeting area 143, the number of the second shielding structures 1413 is two. Of the two second shielding structures 1413, one second shielding structure 1413 is located on the third side S3 and on one side of the second disconnection portion 1421 in the first direction X, and the other second shielding structure 1413 is located on the fourth side S4 and on the other side of the second disconnection portion 1421 in the first direction X.

The second shielding structure 1413 and the first shielding structure 1423 are spaced apart from each other. In the embodiment, the first shielding structure 1423 extends around the second shielding structure 1413. In other embodiments, the second shielding structure 1413 may be disposed to extend around the first shielding structure 1423. By extending the first shielding structure 1423 around the second shielding structure 1413, or extending the second shielding structure 1413 around the first shielding structure 1423, the flow path of the display plasma 130 between the adjacent plasma units PU is extended, the leakage of the display plasma 130 between the adjacent plasma units PU can be reduced, and the sealing capability of the isolation component 140 is improved.

In this embodiment, the second blocking structure 1413 extends linearly from the side surface of the first sub-retaining wall 1412 to the second direction Y. In other embodiments, the second blocking structure 1413 may also extend from the side surface of the first sub-retaining wall 1412 to the second direction Y in a zigzag manner. The first shielding structure 1423 extends from the side of the second retaining wall unit 142 to the first direction X in a zigzag manner, and is disposed to extend around a part of the first shielding structure 1423.

FIG. 12 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention. Fig. 12 relates to an embodiment in which the first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. Unlike the previous embodiments, in the meeting area 143 of the present embodiment, the isolation assembly 140 further includes a plurality of third shielding structures 145. The plurality of third shielding structures 145 are commonly disposed around the first breaking portion 1411, and an extending direction of each third shielding structure 145 intersects both the first direction X and the second direction Y. The third shielding structures 145 surround the first opening 1411 together, so as to reduce the fluidity of the plasma 130 between the adjacent plasma units PU and improve the sealing capability of the isolation component 140.

In the above embodiments, the plurality of first sub-retaining walls 1412 of each first retaining wall unit 141 are located on the same extension axis. In other embodiments, the arrangement of the plurality of first sub-retaining walls 1412 may be in other cases.

FIG. 13 is a schematic top view of a meeting area of a portion of an isolation device in a display panel according to yet another embodiment of the invention. In the embodiment shown in fig. 13, the isolation assembly 140 includes a plurality of first wall units 141 and a plurality of second wall units 142. Each first retaining wall unit 141 extends in the first direction X. Each of the second blocking wall units 142 extends along a second direction Y, which intersects the first direction X. One of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, and the other is disposed on the second substrate 120. A meeting region 143 is formed between the first retaining wall unit 141 and the second retaining wall unit 142. In at least one meeting area 143, the first wall unit 141 is provided with a first breaking portion 1411 allowing the second wall unit 142 to pass therethrough.

In this embodiment, the first retaining wall unit 141 includes first sub-retaining walls 1412 partitioned by a plurality of first partitions 1411. In at least one meeting region 143, the adjacent first sub-retaining walls 1412 are staggered from each other in the second direction Y, and the second retaining wall unit 142 passes through the first breaking portion 1411 in a zigzag shape.

The embodiment of the present invention further provides a display device, which may include the display panel 100 of any one of the foregoing embodiments. The display device may be an electronic book or a terminal device such as a mobile phone. The display panel 100 of the display device includes a first substrate 110, a second substrate 120, a display plasma 130, and an isolation member 140. The first substrate 110 includes a plurality of pixel electrodes 111 arranged in an array. The second substrate 120 is disposed opposite to the first substrate 110, and the second substrate 120 includes a common electrode 121. The plasma 130 is shown between the first substrate 110 and the second substrate 120. The isolation member 140 is disposed between the first substrate 110 and the second substrate 120, and separates the display plasma 130 into a plurality of plasma units PU corresponding to the plurality of pixel electrodes 111, respectively.

The isolation assembly 140 includes a plurality of first wall units 141 and a plurality of second wall units 142. Each first retaining wall unit 141 extends in the first direction X. Each of the second blocking wall units 142 extends along a second direction Y, which intersects the first direction X. One of the first retaining wall unit 141 and the second retaining wall unit 142 is disposed on the first substrate 110, and the other is disposed on the second substrate 120. A meeting region 143 is formed between the first retaining wall unit 141 and the second retaining wall unit 142. In at least one meeting area 143, the first wall unit 141 is provided with a first breaking portion 1411 allowing the second wall unit 142 to pass therethrough.

According to the display device of the embodiment of the invention, the first retaining wall unit 141 is provided with the first breaking portion 1411 allowing the second retaining wall unit 142 to pass through, so that a solid cross structure between the first retaining wall unit 141 and the second retaining wall unit 142 is reduced, thereby preventing the meeting region 143 of the display panel 100 from generating abnormal protrusions (for example, abnormal protrusions formed in a baking process of an isolation component) in a manufacturing process, and improving an assembling effect of the display panel 100 without adjusting a distance between the first substrate 110 and the second substrate 120.

According to the display device of the embodiment of the invention, the display panel 100 utilizes the display plasma 130 to display, the required driving voltage is low (about +/-8V), so that the corresponding speed is high, and the display can be kept for a long time. In addition, the electrophoretic particles in the display plasma 130 have a smaller particle size and thus a higher contrast ratio than conventional electrophoretic display devices.

In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, comprising:

a first substrate including a plurality of pixel electrodes arranged in an array;

a second substrate disposed opposite to the first substrate, the second substrate including a common electrode;

a display plasma between the first substrate and the second substrate, an

An isolation assembly positioned between the first substrate and the second substrate and separating the display plasma into a plurality of plasma cells corresponding to the plurality of pixel electrodes, respectively, the isolation assembly comprising:

a plurality of first retaining wall units, each of which extends in a first direction; and

a plurality of second blocking wall units, each of the second blocking wall units extending in a second direction, the second direction crossing the first direction,

one of the first retaining wall unit and the second retaining wall unit is arranged on the first substrate, the other one of the first retaining wall unit and the second retaining wall unit is arranged on the second substrate, a meeting area is arranged between the first retaining wall unit and the second retaining wall unit, and in at least one meeting area, the first retaining wall unit is provided with a first disconnection portion allowing the second retaining wall unit to pass through.

2. The display panel according to claim 1, wherein in at least one of the meeting areas, the second wall unit is provided with a second breaking portion allowing the first wall unit to pass through.

3. The display panel according to claim 2, wherein in at least one of the meeting areas, the first dam unit is provided with a first breaking portion allowing the second dam unit to pass through, and the second dam unit is provided with a second breaking portion allowing the first dam unit to pass through.

4. The display panel according to claim 1, wherein the first retaining wall unit comprises a first sub-retaining wall partitioned by a plurality of first breaking portions, and a distance between an end of the first sub-retaining wall and the second retaining wall unit in the first direction is 3 micrometers to 4.5 micrometers.

5. The display panel according to claim 1, wherein the first barrier wall unit includes a first sub-barrier wall partitioned by a plurality of first breaking portions, the second barrier wall unit is provided with a first shielding structure extending from at least one side of the second barrier wall unit to the first direction, and the first shielding structure is located on at least one side of the first breaking portion in the second direction.

6. The display panel according to claim 5, wherein the second barrier wall unit comprises a first side surface and a second side surface which are opposite to each other, and wherein a position of the first shielding structure disposed on the first side surface in the second direction does not overlap with a position of the first shielding structure disposed on the second side surface in the second direction.

7. The display panel according to claim 5, wherein the second barrier wall unit includes a first side surface and a second side surface opposite to each other, and in the meeting area, the number of the first shielding structures is two, and one of the two first shielding structures is located on the first side surface and located on one side of the first breaking portion in the second direction, and the other first shielding structure is located on the second side surface and located on the other side of the first breaking portion in the second direction.

8. The display panel according to claim 7, wherein in the meeting area, the second dam unit has a second breaking portion allowing the first dam unit to pass through, and the second breaking portion is disposed between two of the first dam structures.

9. The display panel of claim 8, wherein the barrier assembly further comprises:

the center post is arranged in the center of the first disconnection portion and the center of the second disconnection portion in the meeting area, and the center post and the first retaining wall unit and the second retaining wall unit are arranged at intervals.

10. The display panel according to claim 5, wherein the length of each first blocking structure in the first direction is greater than or equal to 3 times the distance between the end of the first sub-wall and the second wall unit in the first direction.

11. The display panel according to claim 5, wherein in the meeting area, at least one of the first sub-barriers is provided with a second shielding structure extending from at least one side of the first sub-barrier to the second direction.

12. The display panel according to claim 11, wherein the first dam unit comprises a third side and a fourth side opposite to each other, wherein a position of the second barrier structure disposed on the third side in the first direction does not overlap with a position of the second barrier structure disposed on the fourth side in the first direction.

13. The display panel according to claim 11, wherein the first barrier wall unit includes a third side and a fourth side opposite to each other, and in the meeting area, the number of the second barrier structures is two, and of the two second barrier structures, one of the second barrier structures is located on the third side and located on one side of the second breaking portion in the first direction, and the other of the second barrier structures is located on the fourth side and located on the other side of the second breaking portion in the first direction.

14. The display panel of claim 11, wherein the second shielding structure and the first shielding structure are spaced apart from each other,

the second shielding structure extends around the first shielding structure, or the first shielding structure extends around the second shielding structure.

15. The display panel according to claim 11, wherein the second blocking structure extends linearly or in a zigzag shape from the side surface of the first sub-barrier to the second direction.

16. The display panel according to any one of claims 5 to 15, wherein the first shielding structure extends linearly or in a zigzag shape from a side surface of the second barrier unit toward the first direction.

17. The display panel according to any one of claims 5 to 15, wherein the plurality of first sub-retaining walls of each first retaining wall unit are located on the same extension axis.

18. The display panel according to claim 1, wherein in the meeting area, the barrier assembly further comprises a plurality of third shielding structures, the plurality of third shielding structures are commonly disposed around the first breaking portion, and an extending direction of each of the third shielding structures intersects with both the first direction and the second direction.

19. The display panel according to claim 1, wherein the first retaining wall unit includes a plurality of first sub-retaining walls separated by a plurality of first breaking portions, in at least one of the meeting regions, adjacent first sub-retaining walls are offset from each other in the second direction, and the second retaining wall unit passes through the first breaking portions in a zigzag shape.

20. A display device characterized by comprising the display panel according to any one of claims 1 to 19.