Display panel and display device

Abstract

The invention discloses a display panel and display equipment. The display panel comprises a first substrate, a second substrate and a retaining wall, the retaining wall is arranged between the first substrate and the second substrate, a concave part facing the second substrate is formed in the side, close to the first substrate, of the retaining wall, a first containing space is formed in the concave part, first shading particles are contained in the first containing space, and the first shading particles are arranged between the first substrate and the second substrate. And under the action of the electric field, the first shading particles move towards the first substrate and are attached to the first substrate to form a particle wall. According to the display panel, the first containing space is formed in the end, close to the first substrate, of the retaining wall, and the electrophoretic liquid containing the first shading particles is contained in the first containing space, so that the first shading particles can be attached to the first substrate to form a particle wall under the action of an electric field. Even if the first substrate and the retaining wall are not tightly attached, the gap between the first substrate and the retaining wall can be filled through the particle wall, and particles between adjacent pixels are prevented from overflowing.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a display panel and a display device. Background Art

[0002] The reflective display device is a device structure that uses natural light for display. It can display clearly in strong light or weak light by using ambient light. It has the advantages of low driving voltage, energy saving and little damage to the eyes. The reflective display device structure sets a retaining wall for each pixel to form a cavity with the upper and lower substrates. A colloidal electrophoretic liquid is set in the cavity. Under the action of the electric field, the charged particles in the colloidal electrophoretic liquid undergo electrophoretic migration to realize graphic display.

[0003] In the related art, when the upper substrate and the lower substrate are not tightly attached, there may be a gap between the barrier wall and the upper substrate. When the display states of adjacent pixels are different, the charged particles are affected by the electric field in the adjacent pixels and overflow through the gap, which affects the display effect of the pixels. Summary of the invention

[0004] Embodiments of the present application provide a display panel and a display device.

[0005] An embodiment of the present application provides a display panel, the display panel comprising:

[0006] a first substrate and a second substrate;

[0007] A retaining wall is arranged between the first substrate and the second substrate, and a recessed portion facing the second substrate is formed on the side of the retaining wall close to the first substrate, and the recessed portion forms a first accommodating space. First light-shielding particles are accommodated in the first accommodating space. Under the action of the electric field, the first light-shielding particles move toward the direction of the first substrate and adhere to the first substrate to form a particle wall.

[0008] Thus, in the display panel and display device of the embodiment of the present application, by setting a first accommodation space at one end of the baffle wall close to the first substrate, and placing an electrophoretic liquid with first light-shielding particles in the first accommodation space, the first light-shielding particles can adhere to the first substrate to form a particle wall under the action of the electric field. Even if the first substrate and the baffle wall are not closely attached, the gap between the first substrate and the baffle wall can be filled by the particle wall to prevent the overflow of particles between adjacent pixels.

[0009] In some embodiments, the retaining wall includes a plurality of first retaining walls arranged along a first direction and a plurality of second retaining walls arranged along a second direction, the first direction and the second direction intersect, two adjacent first retaining walls, two adjacent second retaining walls, the first substrate and the second substrate form a second accommodating space, second light-shading particles are accommodated in the second accommodating space, and the particle wall is used to prevent the second light-shading particles from overflowing from the current second accommodating space.

[0010] Thus, by setting an electric field to make the first light-shielding particles move toward the first substrate and adhere to the first substrate to form a particle wall, the second light-shielding particles can be blocked from overflowing from the current second accommodation space to the adjacent second accommodation space, thereby preventing the second light-shielding particles from overflowing and affecting the display effect.

[0011] In certain embodiments, under the action of an electric field, the state of the light-shading particles includes a first state and a second state. When in the first state, the light-shading particles adhere to the first substrate, and the light-shading particles include the first light-shading particles and the second light-shading particles; when in the second state, the second light-shading particles adhere to the second substrate, and the first light-shading particles adhere to a side of the first accommodating space close to the second substrate.

[0012] In this way, under the action of the electric field, the first light-shielding particles and the second light-shielding particles can be attached to the first substrate or to the second substrate to achieve different display effects.

[0013] In some embodiments, the display panel includes a plurality of pixels arranged in an array, the pixels correspond to the second accommodating spaces one by one, and two adjacent pixels include a first pixel and a second pixel;

[0014] When the first pixel is in the first working state and the second pixel is in the second working state, the second light-shading particles in the second accommodating space corresponding to the first pixel are in the first state, the second light-shading particles in the second accommodating space corresponding to the second pixel are in the first state, and the first light-shading particles in the blocking wall shared by the first pixel and the second pixel are in the first state to form the particle wall, which is used for shading, and the brightness of the pixel when it is in the first working state is lower than the brightness of the pixel when it is in the second working state.

[0015] In this way, when the working states of two adjacent pixels are different, the first light-shielding particles in the shared barrier wall are controlled to be in the first state to form a particle wall, thereby preventing the second light-shielding particles of the two adjacent pixels from overflowing and affecting the display effect.

[0016] In some embodiments, the first substrate does not include a light shielding layer.

[0017] In this way, the particle wall plays a role in blocking light, and the light shielding layer in the first substrate can be omitted, thereby simplifying the structure of the first substrate.

[0018] In some embodiments, two adjacent pixels include a first pixel and a second pixel. When the working states of the first pixel and the second pixel are the same, the state of the first light-shading particles in the baffle wall shared by the first pixel and the second pixel, the state of the second light-shading particles in the second accommodating space corresponding to the first pixel, and the state of the second light-shading particles in the second accommodating space corresponding to the second pixel are all the same.

[0019] Thus, when the working states of two adjacent pixels are the same, the states of the second shading particles corresponding to the two pixels and the state of the first shading particles in the baffle shared by the two pixels are the same, so as to improve the display effect in the corresponding working state.

[0020] In some embodiments, the first substrate includes a first electrode layer, the electrode layer includes a plurality of first barrier wall electrodes spaced apart from each other, a second barrier wall electrode is provided on the barrier wall, the first barrier wall electrode and the second barrier wall electrode are used to generate a first electric field, and under the action of the first electric field, the first light-shielding particles are used to adhere to the first substrate.

[0021] In this way, by arranging a plurality of first barrier electrodes in the first electrode layer and arranging a second barrier electrode on the barrier, a first battery can be formed to drive the first light-shielding particles to migrate.

[0022] In some embodiments, an orthographic projection of the first barrier wall electrode on the second substrate overlaps with an orthographic projection of the barrier wall on the second substrate.

[0023] Thus, by arranging the first barrier electrode directly above the barrier, the first electric field generated by the first barrier electrode and the second barrier electrode on the barrier can drive the first light-shielding particles to move toward the first substrate or the second substrate.

[0024] In some embodiments, the retaining wall, the first substrate and the second substrate form a plurality of second accommodation spaces arranged in an array, a second electrophoretic liquid is accommodated in the second accommodation spaces, and second light-shielding particles are arranged in the second electrophoretic liquid;

[0025] The first electrode layer also includes a plurality of first pixel electrodes spaced apart from each other, the first pixel electrodes and the first barrier wall electrodes are spaced apart from each other, the second substrate includes a second electrode layer, the second electrode layer includes a plurality of second pixel electrodes, the first pixel electrodes and the second pixel electrodes are used to generate a second electric field, and the second battery is used to drive the second light-shielding particles to move.

[0026] Thus, by providing the first pixel electrode and the second pixel electrode, a second electric field can be generated to drive the second light shielding particles to migrate. The first pixel electrode and the first barrier electrode are provided in the same electrode layer, which simplifies the panel structure and facilitates the thinning of the panel.

[0027] In some embodiments, an orthographic projection of the first pixel electrode on the second substrate overlaps with an orthographic projection of the second pixel electrode on the second substrate.

[0028] In this way, by arranging the first pixel electrode directly above the second pixel electrode, the second electric field generated by the first pixel electrode and the second pixel electrode can drive the second light-shielding particles to move toward the first substrate or the second substrate.

[0029] In some embodiments, when the first light-shielding particles form the particle wall, the intensity of the first electric field is greater than the intensity of the second electric field.

[0030] In this way, by setting the intensity of the first electric field to be greater than the intensity of the second electric field, the first light-shielding particles can be prevented from overflowing into the second accommodating space due to the influence of the second electric field, thereby ensuring the blocking effect of the particle wall.

[0031] An embodiment of the present application provides a display device, which includes a display panel as described in any of the above embodiments.

[0032] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 is one of the schematic diagrams of a display panel according to some embodiments of the present application;

[0035] Figure 2 is a second schematic diagram of a display panel according to some embodiments of the present application;

[0036] Figure 3is a third schematic diagram of a display panel according to some embodiments of the present application;

[0037] Figure 4 This is a fourth schematic diagram of a display panel according to some embodiments of the present application;

[0038] Figure 5 This is the fifth schematic diagram of a display panel of certain embodiments of the present application. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0040] The reflective display device is a device structure that uses natural light for display. It can display clearly in strong light or weak light by using ambient light. It has the advantages of low driving voltage, energy saving and little damage to the eyes. The reflective display device structure sets a retaining wall for each pixel to form a cavity with the upper and lower substrates. A colloidal electrophoretic liquid is set in the cavity. Under the action of the electric field, the charged particles in the colloidal electrophoretic liquid undergo electrophoretic migration to realize graphic display.

[0041] In the related art, when the upper substrate and the lower substrate are not tightly attached, there may be a gap between the barrier wall and the upper substrate. When the display states of adjacent pixels are different, the charged particles are affected by the electric field in the adjacent pixels and overflow through the gap, which affects the display effect of the pixels.

[0042] Based on the above possible problems, please refer to Figure 1 The embodiment of the present application provides a display panel 1000, which includes a first substrate 100, a second substrate 300 and a retaining wall 500. The retaining wall 500 is arranged between the first substrate and the second substrate. A recessed portion 51 facing the second substrate 300 is formed on the side of the retaining wall 500 close to the first substrate 100. The recessed portion 51 forms a first accommodating space 910. First light-shielding particles 911 are accommodated in the first accommodating space 910. Under the action of the electric field, the first light-shielding particles 911 move toward the first substrate 100 and adhere to the first substrate 100 to form a particle wall 9111.

[0043] Specifically, the first substrate 100 and the second substrate 300 can both be a multilayer structure stacked. Exemplarily, the first substrate 100 may include a stacked glass layer (Glass), an electrode layer (PVX1), and an overcoater (OC layer). The second substrate 300 may include an electrode layer (PVX2), an insulating layer (PVX3), an Ag layer, and a glass layer (Glass). The first substrate 100 and the second substrate 300 are arranged in a box. The side of the second accommodating space 930 on the most side is sealed by a sealant.

[0044] The retaining wall 500 and the first substrate 100 and the second substrate 300 form a plurality of second accommodating spaces 930, and the plurality of second accommodating spaces 930 correspond one to one to the plurality of pixels 700 of the display panel 1000. Two adjacent second accommodating spaces 930 are divided by a common retaining wall 500. The longitudinal section of the retaining wall 500 is as follows: Figure 1 As shown, the retaining wall 500 may be a structure that is narrow at the top and wide at the bottom, so as to increase the opening ratio of the second accommodating space 930 and improve the brightness in the bright state.

[0045] The second electrophoretic liquid is contained in the second accommodation space 930, and the second electrophoretic liquid includes second light-shielding particles 931. The second light-shielding particles 931 are charged and can migrate under the action of the electric field. When the working states of two adjacent pixels 700 are different, the second light-shielding particles 931 in the two corresponding second accommodation spaces 930 are in different states. For example, when the first pixel 71 is in a white state and the second pixel 73 is in a black state, the second light-shielding particles 931 in the second accommodation space 930 corresponding to the first pixel 71 are attached to the second substrate 300, and the second light-shielding particles 931 in the second accommodation space 930 corresponding to the second pixel 73 are attached to the first substrate 100.

[0046] However, when the first substrate 100 and the second substrate 300 are not closely attached, the blocking wall 500 shared by the two adjacent second accommodating spaces 930 is not attached to the first substrate 100, resulting in a gap. The second light-shielding particles 931 corresponding to the first pixel 71 may be affected by the electric field of the second pixel 73, adhere to the first substrate 100, or even overflow from the gap into the second accommodating space 930 corresponding to the second pixel 73, thereby affecting the display effect of the pixel 700.

[0047] In the embodiment of the present application, in the process scheme, a downward depression is set at the center of the contact surface between the retaining wall 500 and the first substrate 100, that is, a depression 51 is formed on the side of the retaining wall 500 close to the first substrate 100 toward the second substrate 300, and the depression 51 can form a first accommodation space 910, and the first accommodation space 910 contains a first electrophoretic liquid, and the first electrophoretic liquid includes first light-shielding particles 911, and the first light-shielding particles 911 are charged and can migrate in the first electrophoretic liquid under the action of the electric field. Among them, the first light-shielding particles 911 and the second light-shielding particles 931 can be black balls.

[0048] In one embodiment, the first light-shielding particles 911 move toward the first substrate 100 under the action of the electric field, and adhere to the first substrate 100 to form a particle wall 9111. In the case where there is a gap between the first substrate 100 and the upper part of the retaining wall 500, the first light-shielding particles 911 can be controlled by the electric field to form a particle wall 9111, thereby filling the gap between the first substrate 100 and the retaining wall 500, and preventing the second light-shielding particles 931 in the two adjacent second accommodating spaces 930 from overflowing.

[0049] Thus, in the display panel 1000 and the display device of the embodiment of the present application, by setting the first accommodation space 910 at one end of the retaining wall 500 close to the first substrate 100, and placing the electrophoretic liquid provided with the first light-shielding particles 911 in the first accommodation space 910, the first light-shielding particles 911 can be attached to the first substrate 100 under the action of the electric field to form the particle wall 9111. Even if the first substrate 100 and the retaining wall 500 are not tightly attached, the gap between the first substrate 100 and the retaining wall 500 can be filled by the particle wall 9111 to prevent the overflow of particles between adjacent pixels 700.

[0050] See also Figure 1 In some embodiments, the retaining wall 500 includes a plurality of first retaining walls 500 arranged along a first direction and a plurality of second retaining walls 500 arranged along a second direction, the first direction and the second direction intersect, two adjacent first retaining walls 500, two adjacent second retaining walls 500, the first substrate 100 and the second substrate 300 form a second accommodating space 930, and second light-shielding particles 931 are accommodated in the second accommodating space 930, and the particle wall 9111 is used to prevent the second light-shielding particles 931 from overflowing from the current second accommodating space 930.

[0051] Specifically, the first direction and the second direction intersect, the first retaining wall 500 is arranged along the first direction, and the second retaining wall 500 is arranged along the second direction, then the first retaining wall 500 and the second retaining wall 500 intersect. Two adjacent first retaining walls 500 and two adjacent second retaining walls 500 form a ring, and together with the first substrate 100 and the second substrate 300, form a second accommodating space 930. The retaining wall 500, the first substrate 100 and the second substrate 300 can form a plurality of second accommodating spaces 930 arranged in an array, and each second accommodating space 930 corresponds to one of the pixels 700 arranged in an array of the display panel 1000.

[0052] The second electrophoretic liquid is contained in the second containing space 930 , and the second electrophoretic liquid includes second light-shielding particles 931 . The second light-shielding particles 931 are charged and can migrate under the action of an electric field to adhere to the first substrate 100 or the second substrate 300 .

[0053] When the electric field states of two adjacent accommodating spaces are different, if the first substrate 100 and the second substrate 300 are not tightly attached, a gap will be formed between the retaining wall 500 and the first substrate 100, and the second light-shielding particles 931 may overflow under the influence of the adjacent electric field. By setting a particle wall 9111 at one end of the retaining wall 500 close to the first substrate 100, the second light-shielding particles 931 between the two adjacent second accommodating spaces 930 can be prevented from overflowing.

[0054] In one embodiment, there is a gap between the first substrate 100 and the blocking wall 500. The first light-shielding particles 911 adhere to the first substrate 100 under the action of the electric field to form a particle wall 9111. The particle wall 9111 fills the gap between the first substrate 100 and the blocking wall, so that the particle wall 9111 and the blocking wall 500 together block the second light-shielding particles 931 in the two adjacent second accommodating spaces 930.

[0055] In this way, by setting an electric field, the first light-shielding particles 911 move toward the first substrate 100 and adhere to the first substrate 100 to form a particle wall 9111, which can prevent the second light-shielding particles 931 from overflowing from the current second accommodating space 930 to the adjacent second accommodating space 930, thereby preventing the second light-shielding particles 931 from overflowing and affecting the display effect.

[0056] See also Figure 1 and Figure 2In some embodiments, under the action of the electric field, the state of the light-shielding particles includes a first state and a second state. When in the first state, the light-shielding particles adhere to the first substrate 100, and the light-shielding particles include first light-shielding particles 911 and second light-shielding particles 931; when in the second state, the first light-shielding particles 911 adhere to the side of the first accommodating space 910 close to the second substrate 300, and the second light-shielding particles 931 adhere to the second substrate 300.

[0057] Specifically, the light-shielding particles include first light-shielding particles 911 and second light-shielding particles 931. The light-shielding particles are charged and can move under the action of an electric field. The moving direction of the light-shielding particles can be controlled by controlling the direction of the electric field, thereby changing the state of the light-shielding particles.

[0058] The state of the light-shielding particles includes a first state and a second state. In the first state, the light-shielding particles move toward the first substrate 100 under the action of the electric field and adhere to the first substrate 100. In the second state, after moving toward the second substrate 300 under the action of the electric field, the first light-shielding particles 911 adhere to the side of the first accommodating space 910 close to the second substrate 300, and the second light-shielding particles 931 adhere to the second substrate 300.

[0059] Furthermore, the direction of the electric field that puts the light-shielding particles in the first state is different from the direction of the electric field that puts the light-shielding particles in the second state.

[0060] It should be noted that the first substrate 100 is made of transparent material so that external light can penetrate the first substrate 100 and enter the second accommodation space 930. By changing the state of the light-shielding particles, the absorption amount of the second light-shielding particles 931 and the first light-shielding particles 911 to the external incident light can be changed, thereby changing the display effect.

[0061] In this way, under the action of the electric field, the first light-shielding particles 911 and the second light-shielding particles 931 can be attached to the first substrate 100 or to the second substrate 300 to achieve different display effects.

[0062] See also Figure 3 and Figure 4In some embodiments, the display panel 1000 includes a plurality of pixels 700 arranged in an array, and the pixels 700 correspond one-to-one to the second accommodating spaces 930, and two adjacent pixels 700 include a first pixel 71 and a second pixel 73; when the first pixel 71 is in the first working state and the second pixel 73 is in the second working state, the second light-shielding particles 931 in the second accommodating space 930 corresponding to the first pixel 71 are in the first state, and the second light-shielding particles 931 in the second accommodating space 930 corresponding to the second pixel 73 are in the first state, and the first light-shielding particles 911 in the blocking wall 500 shared by the first pixel 71 and the second pixel 73 are in the first state, forming a particle wall 9111, and the particle wall 9111 is used for shading, and the brightness of the pixel 700 when it is in the first working state is less than the brightness of the pixel 700 when it is in the second working state.

[0063] Specifically, the position of the pixel 700 corresponds to the position of the second accommodation space 930. Two adjacent pixels 700 include a first pixel 71 and a second pixel 73, and the first pixel 71 and the second pixel 73 are separated by the barrier wall 500.

[0064] The working state of the pixel 700 includes a first working state and a second working state. When the pixel 700 is in the first working state, the brightness of the pixel 700 is relatively small, and when the pixel 700 is in the second working state, the brightness of the pixel 700 is relatively large. For example, the first working state is a black state, and the second working state is a white state.

[0065] The direction from the first substrate 100 to the second substrate 300 may be the direction of incident light. When the second light-shielding particles 931 are attached to the first substrate 100, the second light-shielding particles 931 absorb a large amount of light incident from the first substrate 100. At this time, the corresponding pixel 700 appears in a black state when viewed from the direction of the first substrate 100. When the second light-shielding particles 931 are attached to the second substrate 300, the second light-shielding particles 931 absorb a small amount of light incident from the first substrate 100. At this time, the corresponding pixel 700 appears in a white state when viewed from the direction of the first substrate 100.

[0066] Therefore, when the pixel 700 is in the black state, the second light-shielding particles 931 in the second accommodation space 930 corresponding to the first pixel 71 are in the first state and adhere to the first substrate 100. When the pixel 700 is in the white state, the second light-shielding particles 931 in the second accommodation space 930 corresponding to the first pixel 71 are in the first state and adhere to the second substrate 300.

[0067] That is, when the first pixel 71 is in the first working state and the second pixel 73 is in the second working state, the working states of the first pixel 71 and the second pixel 73 are different, and the states of the second light-shielding particles 931 in the corresponding second accommodating space 930 are also different.

[0068] At this time, in order to prevent the second light-shielding particles 931 corresponding to the first pixel 71 from being affected by the electric field of the second pixel 73 and moving toward the first substrate 100 or even overflowing into the second pixel 73, or to prevent the second light-shielding particles 931 in the second pixel 73 from overflowing into the first pixel 71 and affecting the display of the white state, the first light-shielding particles 911 in the retaining wall 500 between the first pixel 71 and the second pixel 73 must also be in the first state to fit the first substrate 100 to form a particle wall 9111, thereby blocking the second light-shielding particles 931 in the first pixel 71 and the second pixel 73.

[0069] Therefore, when the working states of two adjacent pixels 700 are different, the states of the second light-shielding particles 931 in the two corresponding second accommodating spaces 930 are different, and the first light-shielding particles 911 in the shared retaining wall 500 adhere to the first substrate 100 to form a particle wall 9111.

[0070] In this way, when the working states of two adjacent pixels 700 are different, the first light-shielding particles 911 in the shared barrier wall 500 are controlled to be in the first state to form a particle wall 9111, so as to prevent the second light-shielding particles 931 of the two adjacent pixels 700 from overflowing and affecting the display effect.

[0071] See also Figure 1 and Figure 2 In some embodiments, two adjacent pixels 700 include a first pixel 71 and a second pixel 73. When the working states of the first pixel 71 and the second pixel 73 are the same, the state of the first light-shielding particles 911 in the retaining wall 500 shared by the first pixel 71 and the second pixel 73, the state of the second light-shielding particles 931 in the second accommodating space 930 corresponding to the first pixel 71, and the state of the second light-shielding particles 931 in the second accommodating space 930 corresponding to the second pixel 73 are all the same.

[0072] Specifically, when the working states of the first pixel 71 and the second pixel 73 are the same, the second light-shielding particles 931 corresponding to the first pixel 71, the second light-shielding particles 931 corresponding to the second pixel 73, and the first light-shielding particles 911 in the retaining wall 500 shared by the first pixel 71 and the second pixel 73 are in the same state.

[0073] In one embodiment, the first pixel 71 and the second pixel 73 are in a black state. The second light-shielding particles 931 in the first pixel 71 adhere to the first substrate 100 under the action of the electric field, the second light-shielding particles 931 in the second pixel 73 adhere to the first substrate 100 under the action of the electric field, and the first light-shielding particles 911 in the retaining wall 500 shared by the first pixel 71 and the second pixel 73 also adhere to the first substrate 100 under the action of the electric field.

[0074] In one embodiment, the first pixel 71 and the second pixel 73 are in a white state. The second light-shielding particles 931 in the first pixel 71 adhere to the second substrate 300 under the action of the electric field, the second light-shielding particles 931 in the second pixel 73 adhere to the second substrate 300 under the action of the electric field, and the first light-shielding particles 911 in the retaining wall 500 shared by the first pixel 71 and the second pixel 73 adhere to the first accommodating space 910 under the action of the electric field.

[0075] In this way, when the working states of two adjacent pixels 700 are the same, the states of the second shading particles 931 corresponding to the two pixels 700 and the states of the first shading particles 911 in the retaining wall 500 shared by the two pixels 700 are the same, so as to improve the display effect in the corresponding working states.

[0076] In some embodiments, the first substrate 100 does not include a light shielding layer.

[0077] Specifically, in the related art, a black matrix (BM) layer is disposed in the first substrate 100 as a light shielding layer to prevent light crosstalk between adjacent pixels 700 .

[0078] In the embodiment of the present application, the first light-shielding particles 911 are arranged on the side of the barrier wall 500 close to the first substrate 100, and the first light-shielding particles 911 can adhere to the first substrate 100 under the action of the electric field to form a particle wall 9111. Since the first light-shielding particles 911 are made of opaque material, the particle wall 9111 can also be used to block the light between two adjacent pixels 700.

[0079] When two adjacent pixels 700 are in a black state, the first light-shielding particles 911 in their shared barrier wall 500 are in a first state, forming a particle wall 9111. When viewed from the first substrate 100 toward the second substrate 300, the position corresponding to the barrier wall 500 displays a darker brightness, thereby achieving a better display effect for the pixel 700 when in a black state.

[0080] When two adjacent pixels 700 are both in the white state, the first light-shielding particles 911 in the shared barrier wall 500 are in the second state. Since the light-shielding particles in the barrier wall 500 are in the second state, they are attached to the side of the first accommodating space 910 close to the second substrate 300, and the first substrate 100 does not include a light-shielding layer, and the first substrate 100 is all made of a light-transmitting material, when the first light-shielding particles 911 are in the second state, the position corresponding to the barrier wall 500 is also brighter during display, thereby further improving the display brightness when the two adjacent pixels 700 are both in the white state.

[0081] When the working states of two adjacent pixels 700 are different, the first light-shielding particles 911 in their shared barrier wall 500 are in the first state, forming a particle wall 9111, which blocks the light crosstalk between the first pixel 71 and the second pixel 73 and improves the display effect.

[0082] Furthermore, the material of the blocking wall 500 may be a light-proof material to further block the light between two adjacent pixels 700 .

[0083] In this way, the particle wall 9111 plays a role in blocking light, and the light shielding layer in the first substrate 100 can be omitted, thereby simplifying the structure of the first substrate 100.

[0084] See also Figure 5 In some embodiments, the first substrate 100 includes a first electrode layer 11, the first electrode layer 11 includes a plurality of first barrier wall electrodes 111 spaced apart from each other, a second barrier wall electrode 53 is provided on the barrier wall 500, the first barrier wall electrode 111 and the second barrier wall electrode 53 are used to generate a first electric field, and under the action of the first electric field, the first light-shielding particles 911 are used to adhere to the first substrate 100.

[0085] Specifically, in the related art, a complete Com ITO (Common Indium Tin Oxide) layer is provided in the first substrate 100 as an electrode layer, and a complete insulating layer PVX1 is provided between the Com ITO layer and the light shielding layer. The Com ITO layer is used to form an electric field with the electrode layer Slit ITO in the second substrate 300.

[0086] In the embodiment of the present application, first barrier wall electrodes 111 are respectively provided corresponding to different barrier walls 500 , and a plurality of first barrier wall electrodes 111 are arranged at intervals and isolated from each other by insulating materials.

[0087] In addition, an ITO electrode is provided on the retaining wall 500 as the second retaining wall electrode 53, and the ITO electrode can be energized by laying a slope. A first electric field can be generated between the first retaining wall electrode 111 and the corresponding second retaining wall electrode 53. The direction of the first electric field can be changed by changing the electrical properties of the first retaining wall electrode 111 and / or the electrical properties of the second retaining wall electrode 53. By changing the direction of the first electric field, the state of the first light-shielding particle 911 can be changed.

[0088] The relationship between the direction of the first electric field and the moving direction of the first light-shielding particles 911 is determined according to the charged properties of the first light-shielding particles 911 .

[0089] In one embodiment, the direction of the first electric field is from the first substrate 100 to the second substrate 300, and the first light-shielding particles 911 are positively charged. Then, the first light-shielding particles 911 move toward the second substrate 300 under the action of the first electric field and adhere to the side of the first accommodating space 910 close to the second substrate 300.

[0090] In another embodiment, the direction of the first electric field is from the first substrate 100 to the second substrate 300, and the first light-shielding particles 911 are negatively charged. The first light-shielding particles 911 move toward the first substrate 100 under the action of the first electric field, adhere to the first substrate 100, and form a particle wall 9111.

[0091] In this way, by disposing a plurality of first barrier electrodes 111 in the first electrode layer 11 and disposing a second barrier electrode 53 on the barrier 500 , a first battery can be formed to drive the first light-shielding particles 911 to migrate.

[0092] In some embodiments, the orthographic projection of the first barrier electrode 111 on the second substrate 300 overlaps with the orthographic projection of the barrier wall 500 on the second substrate 300 .

[0093] Specifically, the orthographic projection of the first barrier wall electrode 111 on the second substrate 300 overlaps with the orthographic projection of the barrier wall 500 on the second substrate 300, that is, in the direction from the first substrate 100 vertically to the second substrate 300, the first barrier wall electrode 111 is arranged above the barrier wall 500, so that the direction of the electric field formed by the first barrier wall electrode 111 and the second barrier wall electrode 53 can be along the direction vertically from the first substrate 100 to the second substrate 300, so that the first light-shielding particles 911 can migrate toward the first substrate 100 or the second substrate 300 under the action of the first electric field, thereby changing the state of the first light-shielding particles 911.

[0094] Thus, by setting the first barrier electrode 111 directly above the barrier 500 , the first electric field generated by the first barrier electrode 111 and the second barrier electrode 53 on the barrier 500 can drive the first light-shielding particles 911 to move toward the first substrate 100 or the second substrate 300 .

[0095] See also Figure 5In some embodiments, the retaining wall 500, the first substrate 100 and the second substrate 300 form a plurality of second accommodating spaces 930 arranged in an array, a second electrophoretic liquid is contained in the second accommodating space 930, and second light-shielding particles 931 are provided in the second electrophoretic liquid; the first electrode layer 11 also includes a plurality of first pixel electrodes 113 arranged at intervals, the first pixel electrodes 113 and the first retaining wall electrodes 111 are arranged at intervals, the second substrate 300 includes a second electrode layer 31, the second electrode layer 31 includes a plurality of second pixel electrodes 311, the first pixel electrodes 113 and the second pixel electrodes 311 are used to generate a second electric field, and the second battery is used to drive the second light-shielding particles 931 to move.

[0096] Specifically, the first electrode layer 11 also includes a plurality of first pixel electrodes 113 (Com ITO), the first pixel electrodes 113 and the first barrier electrodes 111 are alternately arranged at intervals, and are isolated from each other by insulating materials. A second electrode layer 31 is provided in the second substrate 300, and a plurality of second pixel electrodes 311 (Slit ITO) are provided in the second electrode layer 31 at intervals, the second pixel electrodes 311 and the first pixel electrodes 113 can form a second electric field, and the second light-shielding particles 931 can migrate under the action of the second electric field.

[0097] The direction of the second electric field can be changed by changing the electrical properties of the first pixel electrode 113 and / or the electrical properties of the second pixel electrode 311. Changing the direction of the second electric field can change the state of the second light-shielding particles 931.

[0098] The first pixel electrode 113 and the first barrier electrode 111 are arranged in the same electrode layer, which simplifies the panel structure. The first pixel electrode 113 and the first barrier electrode 111 are arranged with an insulating material to avoid mutual interference, thereby improving display accuracy.

[0099] Thus, by providing the first pixel electrode 113 and the second pixel electrode 311, a second electric field can be generated to drive the second light shielding particles 931 to migrate. The first pixel electrode 113 and the first barrier electrode 111 are provided in the same electrode layer, which simplifies the panel structure and facilitates the thinning of the panel.

[0100] In some embodiments, the orthographic projection of the first pixel electrode 113 on the second substrate 300 overlaps with the orthographic projection of the second pixel electrode 311 on the second substrate 300 .

[0101] Specifically, the orthographic projection of the first pixel electrode 113 on the second substrate 300 overlaps with the orthographic projection of the second pixel electrode 311 on the second substrate 300, that is, in the direction perpendicular to the first substrate 100 to the second substrate 300, the first pixel electrode 113 is arranged above the second pixel electrode 311, so that the direction of the second electric field formed by the first pixel electrode 113 and the second pixel electrode 311 can be in the direction perpendicular to the second substrate 300 along the first substrate 100, so that the second light-shielding particles 931 can migrate toward the first substrate 100 or the second substrate 300 under the action of the second electric field, thereby changing the state of the second light-shielding particles 931.

[0102] In this way, by arranging the first pixel electrode 113 directly above the second pixel electrode 311 , the second electric field generated by the first pixel electrode 113 and the second pixel electrode 311 can drive the second light-shielding particles 931 to move toward the first substrate 100 or the second substrate 300 .

[0103] In some embodiments, when the first light-shielding particles 911 form a particle wall 9111 , the intensity of the first electric field is greater than the intensity of the second electric field.

[0104] Specifically, the greater the electric field strength, the greater the pulling force on the light-shielding particles. Therefore, when the first light-shielding particles 911 adhere to the first substrate 100 under the action of the first electric field to form the particle wall 9111, setting the strength of the first electric field greater than the strength of the second electric field can prevent the first light-shielding particles 911 from overflowing into the second accommodation space 930 under the influence of the second electric field. In addition, the particle wall 9111 can block the second light-shielding particles 931 in two adjacent second accommodation spaces 930, preventing the second light-shielding particles 931 from overflowing, thereby improving the display effect.

[0105] Thus, setting the intensity of the first electric field greater than the intensity of the second electric field can prevent the first light-shielding particles 911 from overflowing into the second accommodating space 930 due to the influence of the second electric field, thereby ensuring the blocking effect of the particle wall 9111 .

[0106] An embodiment of the present application provides a display device, and the display device includes a display panel 1000 as described in any of the above embodiments.

[0107] Specifically, the display device may be a reflective display device, such as electronic paper.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0109] In addition, the term "connection" should be understood in a broad sense, for example, it can include fixed connection, detachable connection, or integral connection; it can include direct connection, indirect connection through an intermediate medium, and internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0110] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0111] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0112] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises: a first substrate and a second substrate; A retaining wall is arranged between the first substrate and the second substrate, and a recessed portion facing the second substrate is formed on the side of the retaining wall close to the first substrate, and the recessed portion forms a first accommodating space. First light-shielding particles are accommodated in the first accommodating space. Under the action of the electric field, the first light-shielding particles move toward the direction of the first substrate and adhere to the first substrate to form a particle wall.

2. The display panel according to claim 1, characterized in that: The retaining wall includes a plurality of first retaining walls arranged along a first direction and a plurality of second retaining walls arranged along a second direction, the first direction and the second direction intersect, two adjacent first retaining walls, two adjacent second retaining walls, the first substrate and the second substrate form a second accommodating space, second light-shielding particles are accommodated in the second accommodating space, and the particle wall is used to prevent the second light-shielding particles from overflowing from the current second accommodating space.

3. The display panel according to claim 2, characterized in that: Under the action of the electric field, the state of the light-shielding particles includes a first state and a second state. When in the first state, the light-shielding particles adhere to the first substrate, and the light-shielding particles include the first light-shielding particles and the second light-shielding particles; when in the second state, the second light-shielding particles adhere to the second substrate, and the first light-shielding particles adhere to the side of the first accommodating space close to the second substrate.

4. The display panel according to claim 3, characterized in that: The display panel includes a plurality of pixels arranged in an array, the pixels correspond to the second accommodating spaces one by one, and two adjacent pixels include a first pixel and a second pixel; When the first pixel is in the first working state and the second pixel is in the second working state, the second light-shading particles in the second accommodating space corresponding to the first pixel are in the first state, the second light-shading particles in the second accommodating space corresponding to the second pixel are in the first state, and the first light-shading particles in the blocking wall shared by the first pixel and the second pixel are in the first state to form the particle wall, which is used for shading, and the brightness of the pixel when it is in the first working state is lower than the brightness of the pixel when it is in the second working state.

5. The display panel according to claim 4, characterized in that: The two adjacent pixels include a first pixel and a second pixel. When the working states of the first pixel and the second pixel are the same, the state of the first light-shading particles in the blocking wall shared by the first pixel and the second pixel, the state of the second light-shading particles in the second accommodating space corresponding to the first pixel, and the state of the second light-shading particles in the second accommodating space corresponding to the second pixel are all the same.

6. The display panel according to claim 4, characterized in that: The first substrate does not include a light shielding layer.

7. The display panel according to claim 1, characterized in that: The first substrate includes a first electrode layer, the electrode layer includes a plurality of first barrier wall electrodes spaced apart from each other, a second barrier wall electrode is provided on the barrier wall, the first barrier wall electrode and the second barrier wall electrode are used to generate a first electric field, and under the action of the first electric field, the first light-shielding particles are used to adhere to the first substrate.

8. The display panel according to claim 7, characterized in that: The orthographic projection of the first barrier wall electrode on the second substrate overlaps with the orthographic projection of the barrier wall on the second substrate.

9. The display panel according to claim 7, characterized in that: The retaining wall, the first substrate and the second substrate form a plurality of second accommodating spaces arranged in an array, a second electrophoretic liquid is accommodated in the second accommodating spaces, and second light-shielding particles are arranged in the second electrophoretic liquid; The first electrode layer also includes a plurality of first pixel electrodes spaced apart from each other, the first pixel electrodes and the first barrier wall electrodes are spaced apart from each other, the second substrate includes a second electrode layer, the second electrode layer includes a plurality of second pixel electrodes, the first pixel electrodes and the second pixel electrodes are used to generate a second electric field, and the second battery is used to drive the second light-shielding particles to move.

10. The display panel according to claim 9, characterized in that: An orthographic projection of the first pixel electrode on the second substrate overlaps with an orthographic projection of the second pixel electrode on the second substrate.

11. The display panel according to claim 9, characterized in that: When the first light-shielding particles form the particle wall, the intensity of the first electric field is greater than the intensity of the second electric field.

12. A display device, characterized in that: The display device comprises a display panel as described in any one of claims 1-11.

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