Display substrate and display panel

Abstract

The invention relates to the technical field of display, in particular to a display substrate and a display panel, the display substrate comprises a substrate and a planarization layer arranged on the substrate, the planarization layer comprises a transparent flat material part and specific transparent doped particles, and the surface, away from the substrate, of the transparent flat material part is a flat surface. The specific transparent doped particles are doped in the transparent flat material portion, and the specific transparent doped particles are configured to transmit light of a specific color. According to the display substrate, the specific transparent doping particles are doped in the transparent flat material part, the surface of the display substrate can be flattened through the transparent flat material part, the specific transparent doping particles are used for achieving image display of a specific color, meanwhile, film layers of the display substrate are reduced, and the display substrate is light and thin. In addition, compared with a color resistance layer with a specific color, the specific transparent doped particles can also improve the light transmittance, so that the display brightness of the display substrate can be improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display substrate and a display panel. Background Art

[0002] Currently, most display substrates on the market are black and white. In order to improve the performance of display substrates, people have designed color display substrates. However, existing color display substrates usually have problems such as thick film layers and low light output brightness, which in turn affects the display effect. Summary of the Invention

[0003] The purpose of the present application is to provide a display substrate and a display panel, which can achieve flatness of the display substrate and transmit light of a specific color while reducing film layers and improving light transmittance.

[0004] An embodiment of the present disclosure provides a display substrate, comprising: substrate; A planarization layer is arranged on the substrate, and the planarization layer includes a transparent flat material portion and specific transparent doped particles. The surface of the transparent flat material portion away from the substrate is a flat surface, and the specific transparent doped particles are doped in the transparent flat material portion. The specific transparent doped particles are configured to allow light of a specific color to pass through.

[0005] In an exemplary embodiment of the present disclosure, the specific transparent doping particles include: Central silver grain; At least two composite wrapping layers, the composite wrapping layers comprising a titanium dioxide wrapping layer and a silver wrapping layer that sequentially wrap the central silver particle from the inside out; The color of light transmitted by the specific transparent doped particles is changed by adjusting at least one of the size of the central silver particle, the titanium dioxide wrapping layer, the silver wrapping layer, and the number of layers of the composite wrapping layer.

[0006] In an exemplary embodiment of the present disclosure, the central silver particle is a spherical particle, and the titanium dioxide wrapping layer and the silver wrapping layer have uniform film thickness; The size of the central silver particle is the radius of the central silver particle, the size of the titanium dioxide wrapping layer is the film thickness of the titanium dioxide wrapping layer, and the size of the silver wrapping layer is the film thickness of the silver wrapping layer.

[0007] In an exemplary embodiment of the present disclosure, the specific transparent doped particles include two layers of the composite wrapping layers, wherein: When the radius of the central silver particle is 7 nm, the thickness of the two titanium dioxide wrapping layers is 4 nm, and the thickness of the two silver wrapping layers is 5 nm, the specific transparent doped particles are configured to allow blue light to pass through; or, When the radius of the central silver particle is 5 nm, the thickness of the two titanium dioxide wrapping layers is 4 nm, and the thickness of the two silver wrapping layers is 7 nm, the specific transparent doped particles are configured to allow green light to pass through; or, When the radius of the central silver particle is 5 nm, the film thickness of one of the two titanium dioxide wrapping layers closer to the central silver particle is 4 nm, the film thickness of the other titanium dioxide wrapping layer is 7 nm, the film thickness of one of the two silver wrapping layers closer to the central silver particle is 5 nm, and the film thickness of the other silver wrapping layer is 8 nm, the specific transparent doped particles are configured to allow red light to pass through.

[0008] In an exemplary embodiment of the present disclosure, the transparent flat material portion has a plurality of flat regions, and the structures of the specific transparent doping particles doped in at least two of the flat regions are different so as to be configured to transmit light of different colors.

[0009] In an exemplary embodiment of the present disclosure, the plurality of flat areas include a first flat area, a second flat area, and a third flat area, and the specific transparent doped particles doped in the first flat area, the second flat area, and the third flat area are configured to transmit red, green, and blue light, respectively.

[0010] The present disclosure provides a display panel, comprising a first substrate and a second substrate arranged in a cell, wherein at least one of the first substrate and the second substrate is any of the display substrates described above.

[0011] In an exemplary embodiment of the present disclosure, the first substrate and the second substrate are both the display substrates, and the display panel further includes a functional layer, which is arranged between the second substrate and the first substrate, and the functional layer includes a first side facing the first substrate and a second side facing the second substrate, and the first side and the second side are configured to reflect or absorb light.

[0012] In an exemplary embodiment of the present disclosure, the display panel includes a first light-transmitting electrode and a second light-transmitting electrode, the first light-transmitting electrode is located between the functional layer and the first substrate, and the second light-transmitting electrode is located between the functional layer and the second substrate; The functional layer includes an electronic ink unit corresponding to the transparent flat material portion, wherein light-absorbing particles and light-reflecting particles are provided in the electronic ink unit, and the light-absorbing particles and the light-reflecting particles have a first positional relationship and a second positional relationship under the action of an electric field formed by the first light-transmitting electrode and the second light-transmitting electrode, wherein: In the first positional relationship, the light-reflecting particles are configured to reflect light from the first side, and the light-absorbing particles are configured to absorb light from the second side; In the second positional relationship, the light-reflecting particles are configured to reflect light from the second side, and the light-absorbing particles are configured to absorb light from the first side.

[0013] In an exemplary embodiment of the present disclosure, the display panel includes a front light source and a rear light source, the front light source is arranged on a side of the first substrate facing away from the second substrate, and the rear light source is arranged on a side of the second substrate facing away from the display substrate; wherein, at least one of the front light source and the rear light source is turned on to achieve corresponding mode display.

[0014] The technical solution provided by the embodiments of the present disclosure has at least the following advantages: The embodiment of the present disclosure achieves flattening of the surface of the display substrate by doping specific transparent doped particles into the transparent flat material portion, thereby improving problems such as uneven thickness or easy cracking of the structural layer subsequently arranged on the substrate due to the uneven surface of the substrate. At the same time, specific transparent doped particles can be used to allow light of a specific color to pass through, thereby realizing a picture display of a specific color.

[0015] In addition, the planarization layer in the example of the present disclosure can replace the planarization layer and the color resist layer in the related art, thereby reducing the film layers of the display substrate to achieve a lighter and thinner display substrate.

[0016] The specific transparent doped particles in the embodiment of the present disclosure are transparent particles. Compared with the technical solution in the related art that uses color-blocking materials of specific colors to transmit light of specific colors, the specific transparent doped particles in the embodiment of the present disclosure can improve the transmittance of light, thereby improving the display brightness of the display substrate and saving energy consumption.

[0017] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 A schematic cross-sectional structure diagram of a display substrate in an embodiment of the present disclosure is shown.

[0021] Figure 2 A schematic diagram of the partial cross-sectional structure of a specific transparent doped particle in an embodiment of the present disclosure is shown.

[0022] Figure 3 Another cross-sectional structural schematic diagram of a display substrate in an embodiment of the present disclosure is shown.

[0023] Figure 4 A schematic structural diagram of a spray coating device coating a mixed material on a substrate in an embodiment of the present disclosure is shown.

[0024] Figure 5 A schematic structural diagram of loading three different mixed materials into three optical coating processing barrels in an embodiment of the present disclosure is shown.

[0025] Figure 6 A schematic top view of the structure when a transparent flat material portion is formed on a substrate in an embodiment of the present disclosure is shown.

[0026] Figure 7 Shown in Figure 6 Schematic diagram of a top view of the structure when another transparent flat material portion is formed on the basis.

[0027] Figure 8 Shown in Figure 7 A schematic diagram of a top view structure when another transparent flat material portion is formed on the basis of.

[0028] Figure 9 A schematic cross-sectional structure diagram of a display panel in an embodiment of the present disclosure is shown.

[0029] Figure 10 Another schematic cross-sectional structure diagram of a display panel in an embodiment of the present disclosure is shown.

[0030] Figure 11 A schematic cross-sectional structure diagram of a support column in an embodiment of the present disclosure is shown.

[0031] Figure 12 A schematic cross-sectional structure diagram of the cover plate in an embodiment of the present disclosure is shown.

[0032] Description of reference numerals: 1. Substrate; 2. Planarization layer; 22. Specific transparent doped particles; 221. Central silver particle; 222. Titanium dioxide coating layer; 223. Silver coating layer; 23. Flat area; 231. First flat area; 232. Second flat area; 233. Third flat area; 31. Light-absorbing particles; 32. Light-reflecting particles; 41. First light-transmitting electrode; 42. Second light-transmitting electrode; 5. Support column; 6. Cover plate; 7. Coating equipment; 8. Screen; 91. Front light source; 92. Rear light source; 100. Display substrate; 200. Display panel; 210. First substrate; 220. Second substrate. DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0034] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0035] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0036] like Figure 1 As shown, the present disclosure provides a display substrate 100, which may include a substrate 1 and a planarization layer 2, wherein the planarization layer 2 is disposed on the substrate 1. The planarization layer 2 may include a transparent flat material portion and specific transparent dopant particles 22. The surface of the transparent flat material portion away from the substrate 1 is a flat surface, and the specific transparent dopant particles 22 are doped in the transparent flat material portion. The specific transparent dopant particles 22 are configured to transmit light of a specific color.

[0037] The embodiment of the present disclosure can achieve flattening of the surface of the display substrate 100 film layer by doping specific transparent doping particles 22 into the transparent flat material portion, and can also utilize the specific transparent doping particles 22 to enable the display substrate 100 to display a specific color image and enhance the display brightness of the display panel 100.

[0038] In some embodiments, the substrate 1 is a light-transmitting substrate 1 .

[0039] For example, the substrate 1 may be light-transmitting glass.

[0040] In some embodiments, the preparation material of the transparent flat material portion may include a photoresist material. After the material is coated on the substrate 1, the side facing away from the substrate 1 can automatically form a flat surface, thereby facilitating the subsequent arrangement of other structural layers on the substrate 1 (for example, a circuit layer or a structural layer aligned with the display substrate 100, etc.), thereby improving the uneven thickness or easy cracking of the structural layers subsequently arranged on the substrate 1 due to the uneven surface of the substrate 1, thereby improving the preparation yield of the display substrate 100 and improving the display effect.

[0041] However, the present invention is not limited thereto. In addition to the photoresist material, other materials that can be planarized can also be used as the material for preparing the transparent planar material portion in the embodiment of the present disclosure.

[0042] In some embodiments, the specific transparent doped particle 22 may include a central silver particle 221 and at least two composite wrapping layers, wherein the composite wrapping layers may include a titanium dioxide wrapping layer 222 and a silver wrapping layer 223 that sequentially wrap the central silver particle 221 from the inside to the outside.

[0043] It should be noted that the above “from inside to outside” refers to the direction away from the center of the central silver particle 221. The multiple composite wrapping layers in the specific transparent doped particle 22 also wrap the central silver particle 221 in sequence along the direction away from the center of the central silver particle 221.

[0044] The color of light transmitted by the specific transparent doped particles 22 can be changed by adjusting at least one of the size of the central silver particle 221 , the size of the titanium dioxide wrapping layer 222 , the size of the silver wrapping layer 223 , and the number of composite wrapping layers.

[0045] By doping specific transparent doped particles 22 into the transparent flat material portion, the disclosed embodiment can change the color of light transmitted by the specific transparent doped particles 22 by adjusting at least one of the sizes of the central silver particle 221, the titanium dioxide wrapping layer 222, the silver wrapping layer 223, and the number of layers of the composite wrapping layer, thereby achieving full-color display of the display substrate 100.

[0046] Furthermore, compared to display substrates in the related art that employ a planarization layer for planarization and a separate color-resistance layer of a specific color to transmit light of a specific color, the disclosed embodiment, by doping the transparent planar material portion of the planarization layer 2 with specific transparent doping particles 22, can achieve a display of a specific color while also reducing the number of film layers in the display substrate 100, thereby reducing the overall thickness of the display substrate 100 and making the display substrate 100 thinner and lighter. By reducing the number of film layers in the display substrate 100, light loss when passing through the display substrate 100 can be reduced, thereby improving the display brightness of the display substrate 100.

[0047] In addition, the specific transparent doped particles 22 in the embodiment of the present disclosure are transparent particles. Compared with the related technology that uses a color resist layer of a specific color to pass light of a specific color, the specific transparent doped particles 22 in the embodiment of the present disclosure can improve the transmittance of light, thereby improving the display brightness of the display substrate 100 and reducing the energy consumption of the display substrate 100.

[0048] like Figure 2 As shown, in some embodiments, the central silver particle 221 can be a spherical particle, and the film thickness of the titanium dioxide coating layer 222 and the silver coating layer 223 is uniform.

[0049] At this time, the size of the above-mentioned central silver particle 221 refers to the radius of the central silver particle 221, the size of the titanium dioxide wrapping layer 222 refers to the film thickness of the titanium dioxide wrapping layer 222, and the size of the silver wrapping layer 223 refers to the film thickness of the silver wrapping layer 223.

[0050] For example, in the same titanium dioxide wrapping layer 222 , the inner diameter of the titanium dioxide wrapping layer 222 can be the same everywhere within the allowable error range, and the outer diameter thereof can also be the same everywhere within the allowable error range, thereby forming a titanium dioxide wrapping layer 222 with uniform thickness.

[0051] Likewise, in the same silver coating layer 223 , the inner diameter of the silver coating layer 223 can be uniform throughout within the allowable error range, and the outer diameter thereof can also be uniform throughout within the allowable error range, thereby forming a silver coating layer 223 with uniform thickness.

[0052] In the embodiment of the present disclosure, the central silver particle 221 is set as a spherical particle, and the titanium dioxide wrapping layer 222 and the silver wrapping layer 223 are made into annular film layers with uniform film thickness. The material thickness on each surface of the formed specific transparent doped particle 22 is consistent, and the effect on light is uniform, thereby improving the filtering effect of the specific transparent doped particle 22 on light.

[0053] However, the present invention is not limited to this. In other embodiments, the central silver particle 221 in the specific transparent doped particle 22 can also be set to other shapes besides a sphere, and the titanium dioxide wrapping layer 222 and the silver wrapping layer 223 can also be film layers with uneven film thickness, which can be set specifically according to actual conditions.

[0054] In some embodiments, the specific transparent doped particle 22 may include two composite wrapping layers, wherein: when the central silver particle 221 is a spherical particle, the film thicknesses of the titanium dioxide wrapping layer 222 and the silver wrapping layer 223 are uniform, and the radius of the central silver particle 221 is 7 nm, the film thicknesses of the two titanium dioxide wrapping layers 222 are both 4 nm, and the film thicknesses of the two silver wrapping layers 223 are both 5 nm, the specific transparent doped particle 22 is configured to allow blue light to pass through.

[0055] In some embodiments, the specific transparent doped particle 22 may include two composite wrapping layers, wherein: when the central silver particle 221 is a spherical particle, the film thicknesses of the titanium dioxide wrapping layer 222 and the silver wrapping layer 223 are uniform, and the radius of the central silver particle 221 is 5 nm, the film thicknesses of the two titanium dioxide wrapping layers 222 are both 4 nm, and the film thicknesses of the two silver wrapping layers 223 are both 7 nm, the specific transparent doped particle 22 is configured to allow green light to pass through.

[0056] In some embodiments, the specific transparent doped particle 22 may include two composite wrapping layers, wherein: when the central silver particle 221 is a spherical particle, the film thicknesses of the titanium dioxide wrapping layer 222 and the silver wrapping layer 223 are uniform, and the radius of the central silver particle 221 is 5 nm, the film thickness of the one of the two titanium dioxide wrapping layers 222 closer to the central silver particle 221 is 4 nm, and the film thickness of the other titanium dioxide wrapping layer 222 is 7 nm, and the film thickness of the one of the two silver wrapping layers 223 closer to the central silver particle 221 is 5 nm, and the film thickness of the other silver wrapping layer 223 is 8 nm, the specific transparent doped particle 22 is configured to allow red light to pass through.

[0057] In some embodiments, the transparent flat material portion may have multiple flat areas 23 , and the structures of the specific transparent doping particles 22 doped in at least two flat areas 23 are different so as to be configured to transmit light of different colors, so that the display substrate 100 can achieve color display.

[0058] It should be noted that the above-mentioned “different structures of specific transparent doped particles 22” means that at least one of the size of the central silver particle 221 in the specific transparent doped particle 22, the size of the titanium dioxide wrapping layer 222, the size of the silver wrapping layer 223, and the number of layers of the composite wrapping layer is different.

[0059] In some embodiments, the multiple flat areas 23 of the transparent flat material portion may include a first flat area 231, a second flat area 232 and a third flat area 233. The specific transparent doped particles doped in the first flat area 231, the second flat area 232 and the third flat area 233 are respectively configured to transmit red, green and blue light, so that the display substrate 100 can achieve color display.

[0060] For example, Figure 3 As shown, the first flat area 231 , the second flat area 232 and the third flat area 233 in the embodiment of the present disclosure can be evenly arranged in an array on the substrate 1 , so that the display substrate 100 can achieve color display.

[0061] However, the present invention is not limited thereto. The specific transparent doped particles 22 in the flat layer in the embodiment of the present disclosure may also be configured to transmit light of other colors besides red, green, and blue. The arrangement of the specific transparent doped particles 22 that transmit light of different colors on the substrate 1 may also be set according to actual conditions.

[0062] In the embodiment of the present disclosure, the method for preparing the planarization layer 2 may be as follows: providing a substrate 1, a transparent planar material, and specific transparent doping particles 22 that can transmit light of a specific color. The transparent planar material is mixed with the specific transparent doping particles 22 to obtain a mixed material that can transmit light of a specific color. The obtained mixed material can be placed in an optical coating treatment barrel (OC barrel). Figure 4 As shown, a coating device 7, such as a nozzle, is used to apply the mixed material to corresponding locations on substrate 1. A stencil 8 can be used to mask areas where the mixed material is not to be applied to prevent accidental or excessive application. After the mixed material is applied to substrate 1, it completely covers the surface of substrate 1. The mixed material on substrate 1 is then baked and cured to complete the preparation of planarization layer 2.

[0063] When the display substrate 100 includes multiple specific transparent doping particles 22 , the multiple specific transparent doping particles 22 can be mixed with transparent planar materials to obtain a mixed material that can transmit multiple specific color lights.

[0064] For example, when the planarization layer 2 includes a first planar region 231, a second planar region 232, and a third planar region 233 that can transmit red, green, and blue light, respectively, specific transparent doping particles 22 doped on different planar regions 23 can be prepared separately: the specific transparent doping particles 22 that transmit red light are mixed with a transparent planar material, the specific transparent doping particles 22 that transmit green light are mixed with a transparent planar material, and the specific transparent doping particles 22 that transmit blue light are mixed with a transparent planar material to obtain three different mixed materials, such as Figure 5As shown, the three mixed materials obtained can be placed in three OC barrels respectively.

[0065] When a plurality of different mixed materials are coated on the substrate 1 , the screen 8 may be placed corresponding to the areas where the different mixed materials are coated.

[0066] For example, when the planarization layer 2 includes a first planar area 231, a second planar area 232, and a third planar area 233 that can transmit red, green, and blue light, respectively, the area on the substrate 1 that does not need to be coated with the mixed material that transmits red light can be blocked by the screen 8. Then, the mixed material that can transmit red light can be coated on the area of ​​the substrate 1 that is not blocked by the screen 8 to form the first planar area 231. For details, please refer to Figure 6 The position of the screen 8 on the substrate 1 is changed to block the area on the substrate 1 where the mixed material that transmits green light is not required to be coated, and then the mixed material that transmits green light is coated on the area of ​​the substrate 1 not blocked by the screen 8 to form a second flat area 232. For details, please refer to Figure 7 The position of the stencil 8 on the substrate 1 is changed again to block the area on the substrate 1 where the mixed material that transmits blue light is not required to be coated. Then, the mixed material that transmits blue light is coated on the area on the substrate 1 that is not blocked by the stencil 8 to form a third flat area 233. For details, please refer to Figure 8 As shown, the coating of the mixed material on the substrate 1 is completed. After the mixed material is coated on the substrate 1, the different mixed materials can completely cover the surface of the substrate 1. The mixed material on the substrate 1 is baked and cured to complete the preparation of the planarization layer 2.

[0067] It should be noted that in the embodiment of the present disclosure, all mixed materials can be uniformly baked and cured after coating on the substrate 1, but it is not limited to this. When different mixed materials need to be coated on the substrate 1, baking and curing can be performed after coating of one mixed material, and then another mixed material can be coated to improve the problem of mixing between different mixed materials.

[0068] In the embodiment of the present disclosure, the sizes of the areas on the substrate 1 coated with different mixed materials can be the same, so that the same screen 8 can be moved according to different coating positions to block the areas of the substrate 1 that do not need to be coated with mixed materials.

[0069] like Figures 9 to 12 As shown, the present disclosure further provides a display panel 200 , which may include a first substrate 210 and a second substrate 220 arranged in a cell. At least one of the first substrate 210 and the second substrate 220 may be any of the display substrates 100 described above.

[0070] In the embodiment of the present disclosure, by making at least one of the first substrate 210 and the second substrate 220 in the display panel 200 the display substrate 100 described above, light of a specific color irradiated on the specific transparent doped particles 22 can be emitted through the specific transparent doped particles 22 and displayed, while light of other colors is absorbed by the specific transparent doped particles 22, thereby enabling the first substrate 210 and / or the second substrate 220 in the display panel 200 to display a specific color image. At the same time, the overall film thickness of the display panel 200 can be reduced to achieve a lighter and thinner display panel 200. Compared with related technologies that use a color resist layer of a specific color to transmit specific light, the display panel 200 in the present application uses the specific transparent doped particles 22 to improve the transmittance of light, thereby improving the display brightness of the display panel 200 and reducing display energy consumption.

[0071] In some embodiments, when the first substrate 210 and the second substrate 220 are both display substrates 100, the display panel 200 may further include a functional layer, which is arranged between the second substrate 220 and the first substrate 210. The functional layer may include a first side facing the first substrate 210 and a second side facing the second substrate 220. The first side and the second side may be configured to reflect or absorb light.

[0072] For example, when the first side is configured to reflect light, the light irradiated onto the first substrate 210 is filtered by the specific transparent doped particles 22, the light of non-specific color is absorbed by the specific transparent doped particles 22, and the light of specific color is irradiated onto the first side of the functional layer through the specific transparent doped particles 22, and is reflected to the external environment through the first side to achieve bright display of the corresponding area.

[0073] When the first side is configured to absorb light, light of non-specific color irradiated onto the first substrate 210 is absorbed by the specific transparent doped particles 22, and light of specific color that passes through the specific transparent doped particles 22 and irradiates the functional layer is absorbed by the first side to achieve dark state display in the corresponding area.

[0074] In some embodiments, the display panel 200 may further include a first light-transmitting electrode 41 and a second light-transmitting electrode 42. The first light-transmitting electrode 41 may be located between the functional layer and the first substrate 210, and the second light-transmitting electrode 42 may be located between the functional layer and the second substrate 220. The functional layer may include an electronic ink unit corresponding to the transparent flat material portion. The electronic ink unit includes light-absorbing particles 31 and light-reflecting particles 32. The light-absorbing particles 31 and the light-reflecting particles 32 have a first positional relationship and a second positional relationship under the influence of the electric field formed by the first light-transmitting electrode 41 and the second light-transmitting electrode 42.

[0075] In the first positional relationship, the light-reflecting particles 32 move to the side of the light-absorbing particles 31 that is close to the first light-transmitting electrode 41, and are configured to reflect light on the first side. The light-absorbing particles 31 move to the side of the light-reflecting particles 32 that is close to the second light-transmitting electrode 42, and are configured to absorb light on the second side.

[0076] In the second position relationship, the reflective particles 32 move to the side of the light-absorbing particles 31 close to the second light-transmitting electrode 42, and the reflective particles 32 are configured to reflect the light on the second side. The light-absorbing particles 31 move to the side of the reflective particles 32 close to the first light-transmitting electrode 41, and the light-absorbing particles 31 are configured to absorb the light on the first side.

[0077] It should be noted that when the planarization layer 2 in both the first substrate 210 and the second substrate 220 includes a plurality of transparent flat material portions, the transparent flat material portion on the first substrate 210 may correspond to the transparent flat material portion on the second substrate 220 in a one-to-one manner. Figure 10 As shown. A plurality of electronic ink units corresponding to the plurality of transparent flat material portions on the first substrate 210 may be provided in the functional layer. A plurality of first light-transmitting electrodes 41 and a plurality of second light-transmitting electrodes 42 may be provided. For example, when a plurality of first light-transmitting electrodes 41 are provided, the plurality of first light-transmitting electrodes 41 may correspond one-to-one to the plurality of transparent flat material portions on the first substrate 210. Thus, by controlling the voltage on each first light-transmitting electrode 41 and the voltage on the second light-transmitting electrode 42, the position of the light-absorbing particles 31 and the light-reflecting particles 32 in the corresponding electronic ink unit can be controlled, thereby controlling the bright or dark state display of each region corresponding to the electronic ink unit on the first substrate 210 and the second substrate 220.

[0078] In some embodiments, the display panel 200 may further include a front light source 91 and a rear light source 92. The front light source 91 may be arranged on the side of the first substrate 210 facing away from the second substrate 220, and the rear light source 92 may be arranged on the side of the second substrate 220 facing away from the display substrate 100. By controlling at least one of the front light source 91 and the rear light source 92 to turn on, the corresponding mode display may be achieved. At the same time, by setting the front light source 91 and the rear light source 92 in the display panel 200, the dependence of the display panel 200 on the external environment during display may be reduced, thereby improving the display brightness and the stability of the display effect.

[0079] For example, the embodiment of the present disclosure can turn on the front light source 91 and the rear light source 92 at the same time. When a frame of image signal is input, the reflective particles 32 and the light-absorbing particles 31 in the electronic ink unit at the corresponding position move under the action of the electric field. When the area corresponding to the first substrate 210 and the electronic ink unit needs to be displayed in a bright state, the reflective particles 32 in the electronic ink unit are moved to the first position. At the same time, the light-absorbing particles 31 in the electronic ink unit can absorb the light on the corresponding area of ​​the second substrate 220 to achieve a dark state display of the corresponding area of ​​the second substrate 220. When the area corresponding to the second substrate 220 and the electronic ink unit needs to be displayed in a bright state, the reflective particles 32 in the electronic ink unit are moved to the second position. At the same time, the light-absorbing particles 31 in the electronic ink unit can absorb the light on the corresponding area of ​​the first substrate 210 to achieve a dark state display of the corresponding area of ​​the first substrate 210.

[0080] In the embodiment of the present disclosure, the light from the front light source 91 and the rear light source 92 can display different patterns on the opposite sides of the display panel 200 after passing through specific transparent doped particles 22 and being absorbed by the light-absorbing particles 31 in the electronic ink unit or reflected by the reflective particles 32, thereby realizing a double-sided display mode.

[0081] However, the present invention is not limited thereto. In some embodiments, only one of the front light source 91 or the rear light source 92 may be turned on.

[0082] For example, the front light source 91 can be turned on and the rear light source 92 can be turned off. When a frame of image signal is input, the reflective particles 32 and the light-absorbing particles 31 in the electronic ink unit at the corresponding position move under the action of the electric field. The reflective particles 32 in the electronic ink unit are moved to the first position, and the area corresponding to the first substrate 210 and the electronic ink unit can achieve a bright state display. The reflective particles 32 in the electronic ink unit are moved to the second position, and the area corresponding to the first substrate 210 and the electronic ink unit can achieve a dark state display. The display panel 200 cannot display the image because there is no light source on the side of the second substrate 220, so the display panel 200 can achieve a single-sided display mode.

[0083] That is, the embodiment of the present disclosure controls one of the front light source 91 or the rear light source 92 to turn on, so that the display panel 200 can display on the side corresponding to the turned-on light source, thereby realizing a single-sided display mode.

[0084] In some embodiments, the display panel 200 may further include a support post (PS) 5 . The opposite ends of the support post 5 may be supported between the first substrate 210 and the second substrate 220 to form a space for accommodating the electronic ink unit.

[0085] For example, Figure 11As shown, opposite ends of the support column 5 can respectively abut against the first light-transmitting electrode 41 and the second light-transmitting electrode 42. The support column 5 can be disposed between two adjacent electronic ink units.

[0086] In some embodiments, a cover plate 6 may be provided on a side of the first substrate 210 facing away from the second substrate 220 in the display panel 200 to protect the surface of the first substrate 210 .

[0087] For example, Figure 12 As shown, the cover plate 6 can be disposed on a side of the front light source 91 facing away from the first substrate 210 , and the cover plate 6 can completely cover the side of the front light source 91 facing away from the first substrate 210 .

[0088] In the description of this specification, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0089] In addition, it should be noted that “upper”, “lower”, “left”, “right”, etc. are only used to distinguish for the convenience of description, and do not impose directional restrictions on the embodiments of the present invention. For example, the “upper” may actually be “lower”, “left”, “right”, etc. In the present disclosure, unless otherwise clearly specified and limited, the terms “assembly”, “connection”, etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0090] In the description of this specification, the reference terms "some embodiments", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example 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. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0091] 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. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent application.

Claims

1. A display substrate, characterized in that: include: substrate; A planarization layer is arranged on the substrate, and the planarization layer includes a transparent flat material portion and specific transparent doped particles. The surface of the transparent flat material portion away from the substrate is a flat surface, and the specific transparent doped particles are doped in the transparent flat material portion. The specific transparent doped particles are configured to allow light of a specific color to pass through.

2. The display substrate according to claim 1, wherein: The specific transparent doped particles include: Central silver grain; At least two composite wrapping layers, the composite wrapping layers comprising a titanium dioxide wrapping layer and a silver wrapping layer that sequentially wrap the central silver particle from the inside out; The color of light transmitted by the specific transparent doped particles is changed by adjusting at least one of the size of the central silver particle, the titanium dioxide wrapping layer, the silver wrapping layer, and the number of layers of the composite wrapping layer.

3. The display substrate according to claim 2, wherein: The central silver particle is a spherical particle, and the film thickness of the titanium dioxide wrapping layer and the silver wrapping layer is uniform; The size of the central silver particle is the radius of the central silver particle, the size of the titanium dioxide wrapping layer is the film thickness of the titanium dioxide wrapping layer, and the size of the silver wrapping layer is the film thickness of the silver wrapping layer.

4. The display substrate according to claim 3, wherein: The specific transparent doped particles include two layers of the composite wrapping layers, wherein: When the radius of the central silver particle is 7 nm, the thickness of the two titanium dioxide wrapping layers is 4 nm, and the thickness of the two silver wrapping layers is 5 nm, the specific transparent doped particles are configured to allow blue light to pass through; or, When the radius of the central silver particle is 5 nm, the thickness of the two titanium dioxide wrapping layers is 4 nm, and the thickness of the two silver wrapping layers is 7 nm, the specific transparent doped particles are configured to allow green light to pass through; or, When the radius of the central silver particle is 5 nm, the film thickness of one of the two titanium dioxide wrapping layers closer to the central silver particle is 4 nm, the film thickness of the other titanium dioxide wrapping layer is 7 nm, the film thickness of one of the two silver wrapping layers closer to the central silver particle is 5 nm, and the film thickness of the other silver wrapping layer is 8 nm, the specific transparent doped particles are configured to allow red light to pass through.

5. The display substrate according to claim 1, wherein The transparent flat material portion has a plurality of flat regions, and the structures of the specific transparent doping particles doped in at least two of the flat regions are different so as to be configured to transmit light of different colors.

6. The display substrate according to claim 5, wherein: The plurality of flat areas include a first flat area, a second flat area, and a third flat area. The specific transparent doping particles doped in the first flat area, the second flat area, and the third flat area are configured to transmit red, green, and blue light, respectively.

7. A display panel, characterized in that: The display device comprises a first substrate and a second substrate arranged in a cell, wherein at least one of the first substrate and the second substrate is the display substrate according to any one of claims 1 to 6.

8. The display panel according to claim 7, wherein: The first substrate and the second substrate are both display substrates. The display panel also includes a functional layer, which is arranged between the second substrate and the first substrate. The functional layer includes a first side facing the first substrate and a second side facing the second substrate. The first side and the second side are configured to reflect or absorb light.

9. The display panel according to claim 8, wherein: The display panel includes a first light-transmitting electrode and a second light-transmitting electrode, wherein the first light-transmitting electrode is located between the functional layer and the first substrate, and the second light-transmitting electrode is located between the functional layer and the second substrate; The functional layer includes an electronic ink unit corresponding to the transparent flat material portion, wherein light-absorbing particles and light-reflecting particles are provided in the electronic ink unit, and the light-absorbing particles and the light-reflecting particles have a first positional relationship and a second positional relationship under the action of an electric field formed by the first light-transmitting electrode and the second light-transmitting electrode, wherein: In the first positional relationship, the light-reflecting particles are configured to reflect light from the first side, and the light-absorbing particles are configured to absorb light from the second side; In the second positional relationship, the light-reflecting particles are configured to reflect light from the second side, and the light-absorbing particles are configured to absorb light from the first side.

10. The display panel according to claim 8, wherein The display panel includes a front light source and a rear light source, the front light source is arranged on the side of the first substrate facing away from the second substrate, and the rear light source is arranged on the side of the second substrate facing away from the display substrate; wherein, at least one of the front light source and the rear light source is turned on to achieve corresponding mode display.

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