Reflective display panel, manufacturing method and display device

Abstract

The application discloses a reflective display panel, a manufacturing method and a display device. The reflective display panel of one embodiment comprises a first substrate and a second substrate arranged oppositely, a barrier layer comprising a plurality of opening regions arranged between the first substrate and the second substrate, and a sub-pixel in each opening region; wherein the sub-pixel comprises ink material; the barrier layer comprises a first barrier part formed on the first substrate and a second barrier part corresponding to the first barrier part formed on the second substrate; the surface of the first barrier part towards the second substrate and the surface of the second barrier part towards the first substrate are adhered to make the adjacent sub-pixels arranged independently. The reflective display panel of the embodiment of the application can prevent the black ink particles in the sub-pixel from moving between different sub-pixels, thereby improving the display uniformity of the reflective display panel and improving the display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display. More particularly, it relates to a reflective display panel, a manufacturing method and a display device. BACKGROUND

[0002] At present, according to the type of light source (including: backlight or ambient light) used by the display device, the display device can be divided into three types: transmissive, reflective and semi-transmissive. Among them, the reflective display panel realizes display by reflecting the ambient light incident into the reflective display panel. Since the reflective display panel does not need to additionally set up a backlight module to provide backlight for its display, the reflective display panel has been widely concerned and applied. However, the reflective display panel in some technologies has the problem of poor display uniformity in bright state display, resulting in poor display effect. SUMMARY

[0003] The present application aims to provide a display panel and a manufacturing method thereof, and a display device, to solve at least one of the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The first aspect of the present application provides a reflective display panel, comprising:

[0006] Oppositely arranged first substrate and second substrate, a barrier layer comprising a plurality of opening regions arranged between the first substrate and the second substrate, and a sub-pixel located in each of the opening regions;

[0007] The sub-pixel comprises ink material.

[0008] The barrier layer comprises:

[0009] A first barrier portion formed on the first substrate; and

[0010] A second barrier portion corresponding to the first barrier portion formed on the second substrate;

[0011] The surface of the first barrier portion facing the second substrate and the surface of the second barrier portion facing the first substrate are attached to make the adjacent sub-pixels independently arranged.

[0012] Further, the display panel further comprises a light filtering layer formed on the side surface of the second substrate facing the first substrate, and the light filtering layer comprises:

[0013] An opaque layer arranged corresponding to the barrier layer; and

[0014] A color filter arranged corresponding to the sub-pixel.

[0015] The projection of the light-shielding layer on the first substrate covers the projection of the first blocking part on the first substrate and covers the projection of the second blocking part on the first substrate.

[0016] Further, the display panel further comprises a lens array formed on a side surface of the light-filter layer facing the first substrate, the lens array comprises a plurality of curved lenses, a curved surface of the curved lens faces the first substrate, and the second blocking part is formed on the curved surface.

[0017] Further, the material of the first blocking part is thermoplastic material.

[0018] The material of the second blocking part is wave-absorbing material.

[0019] The first substrate is a driving circuit substrate, and the second substrate is a color filter substrate.

[0020] The second aspect of the present application provides a method for manufacturing the reflective display panel of the first aspect of the present application, the method comprising:

[0021] forming the first blocking part of the blocking layer on the first substrate;

[0022] forming the second blocking part of the blocking layer corresponding to the second blocking part on the second substrate;

[0023] forming an ink material layer of a sub-pixel on the first substrate or the second substrate;

[0024] assembling the first substrate and the second substrate to form a blocking layer comprising a plurality of opening regions and a sub-pixel in each of the opening regions, wherein the surface of the first blocking part facing the second substrate and the surface of the second blocking part facing the first substrate are attached to make adjacent sub-pixels independently arranged.

[0025] Further, the forming the first blocking part of the blocking layer on the first substrate comprises:

[0026] forming a first blocking material layer on the first substrate, wherein the material of the first blocking part is wave-absorbing material; and patterning the first blocking material layer to form the first blocking part.

[0027] Further, the material of the second blocking part is thermoplastic material.

[0028] Further, the display panel further comprises a light-filter layer arranged on a side surface of the second substrate facing the first substrate.

[0029] Before the forming the second barrier part of the barrier layer corresponding to the second barrier part on the second substrate, the method further comprises:

[0030] forming a filter layer on the side surface of the second substrate facing the first substrate, wherein the filter layer comprises a light shielding layer arranged corresponding to the barrier layer and color filters arranged corresponding to the sub-pixels, and a projection of the light shielding layer on the first substrate covers a projection of the first barrier part on the first substrate and a projection of the second barrier part on the first substrate.

[0031] Further, the display panel further comprises a lens array arranged on the side surface of the filter layer facing the first substrate.

[0032] Before the forming the second barrier part of the barrier layer corresponding to the second barrier part on the second substrate, the method further comprises:

[0033] forming a lens array on the side surface of the filter layer facing the first substrate, wherein the lens array comprises a plurality of curved lenses, and a curved surface of the curved lens faces the first substrate, and the second barrier part is formed on the curved surface.

[0034] Further, the assembling the first substrate and the second substrate to form the barrier layer comprising a plurality of opening regions and the sub-pixels in each of the opening regions further comprises:

[0035] forming a sealant on the second substrate or the first substrate;

[0036] assembling the first substrate and the second substrate;

[0037] heating the assembled first substrate and second substrate, and the first barrier part facing the surface of the second substrate and the second barrier part facing the surface of the first substrate are adhered to form the barrier layer, and the sub-pixels are formed in the plurality of opening regions of the barrier layer respectively.

[0038] A third aspect of the present application provides a display device comprising the reflective display panel provided by the first aspect of the present application.

[0039] The present application has the following advantages:

[0040] The technical scheme of the present application sets the barrier layer as a first barrier part and a second barrier part formed on two substrates respectively, and forms the barrier layer through the first barrier part and the second barrier part, effectively improves the problem of different barrier layer heights caused by process errors, makes the formed opening area in a closed state, further makes the sub-pixels formed in each opening area independent of each other, effectively prevents the black ink particles in the sub-pixels from moving between different sub-pixels, thereby improving the display uniformity of the reflective display panel, improving the display effect, and having a wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0041] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0042] Figure 1a A structure schematic diagram of an E-Ink reflective display panel in a bright state display of the prior art is shown.

[0043] Figure 1b A structure schematic diagram of an E-Ink reflective display panel in a dark state display of the prior art is shown.

[0044] Figure 2a A structure schematic diagram of a CID reflective display panel of the prior art is shown.

[0045] Figure 2b A top view structure schematic diagram of a CID reflective display panel of the prior art is shown.

[0046] Figure 3 A structure schematic diagram of a reflective display panel of an embodiment of the present application is shown.

[0047] Figure 4 A flow chart of a method for manufacturing a reflective display panel of another embodiment of the present application is shown.

[0048] Figures 5a to 5e A process flow chart for manufacturing a reflective display panel of an embodiment of the present application is shown. Figure 3 A process flow chart for manufacturing a reflective display panel of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0049] It is also to be noted that, as used in the description herein, the terms "first", "second", etc. are typically used only to distinguish one element from another, and do not necessarily have an ordinal or chronological significance. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0050] Reflective display panels are device structures that display using natural ambient light, and can achieve clear display using ambient light in strong light or weak light, and have the advantages of small driving voltage, energy saving, and less damage to the eyes. Currently, reflective display panels can include: electronic ink (E-Ink) reflective display devices and Clear-Ink (CID) reflective display devices.

[0051] The working principle of the E-Ink reflective display panel in the prior art is as follows: when a voltage is applied to the electrodes in the reflective display panel, the white particles in the ink will move to the surface of the dielectric layer on the display side, and the black particles in the ink will move to the side opposite to the display side, at which time the light will be reflected to achieve bright state display; when a voltage is applied to the electrodes in the reflective display, the white particles in the ink will move to the side opposite to the display side, and the black particles in the ink will move to the surface of the dielectric layer on the display side, at which time the light will be directly absorbed to achieve dark state display.

[0052] Figure 1a FIG. 1 is a structural schematic diagram of an E-Ink reflective display panel in a bright state display according to the prior art, Figure 1b FIG. 2 is a structural schematic diagram of the E-Ink reflective display panel in a dark state display according to the prior art. As Figure 1a and Figure 1bAs shown, the reflective display panel may include: a first substrate 111 and a second substrate 121 arranged opposite to each other, a first electrode 112 arranged on a side of the first substrate 111 close to the second substrate 121, a second electrode 122 arranged on a side of the second substrate 121 close to the first substrate 111, and a microcapsule 13 arranged between the first electrode 112 and the second electrode 122. The microcapsule 13 may include: ink 14 containing white particles 141 (also known as white ink particles or white microsphere particles) and black particles 142 (also known as black ink particles or black microsphere particles), wherein the black particles 142 and the white particles 141 carry different charges. For example, when the first electrode 112 and the second electrode 122 are not powered, the black particles 142 carry a negative charge and the white particles 141 carry a positive charge, and the entire microcapsule 13 is in an electrically balanced state. For example, as Figure 1a As shown in FIG. 1 , when a positive voltage is applied to the first electrode 112, the black particles 142 approach the first electrode 112, and the white particles 141 are distributed above the microcapsules 13. The ambient light incident from the second substrate 121 is reflected at the white particles 141 in the microcapsules 13. At this time, the display device can present a bright display. For example, Figure 1b As shown, when a negative voltage is applied to the first electrode 112, the white particles 141 approach the first electrode 112, and the black particles 142 are distributed above the microcapsule 13. The ambient light incident from the second substrate 121 is absorbed by the black particles 142 in the microcapsule 13. At this time, the display device can present a dark state display.

[0053] The working principle of another CID reflective display panel in the prior art is: when a voltage is applied to the electrodes in the reflective display panel, the black ink particles in the sub-pixels will move to the side opposite to the display side. At this time, the high refractive index of the dielectric layer and the low refractive index of the electronic ink are used to achieve total reflection to realize bright state display; when a voltage is applied to the electrodes in the reflective display panel, the black ink particles in the sub-pixels will move to the surface of the dielectric layer on the display side, so that the light will be directly absorbed to realize dark state display.

[0054] Compared to E-ink reflective display panels, CID reflective display panels offer advantages such as low driving voltage, low energy consumption, and the ability to achieve color display. However, existing CID reflective display panels suffer from poor display uniformity. After extensive research and testing, the inventors discovered that the main causes of this problem are:

[0055] like Figure 2a As shown, the existing CID reflective display panel uses a retaining wall structure 23' disposed between a first substrate 21' and a second substrate 22' to form an opening area, and a sub-pixel 24' is disposed in the opening area to form a Figure 2bA structural schematic diagram in a top view state is shown as Figure 2b As shown, the barrier wall structure 23' and the frame sealant 25' located in the boundary area form a plurality of array-arranged opening areas, and the sub-pixel 24' is arranged in each opening area. The CID reflective display panel requires that each barrier wall structure 23' is completely closed to form a closed space, otherwise the black ink particles in the sub-pixel 24' will shuttle between adjacent sub-pixels, the black ink particles in part of the sub-pixels are reduced, and the uniformity in the display state is poor.

[0056] However, in the actual process of making the barrier wall structure, due to process fluctuation, it is impossible to completely ensure that the heights of the barrier wall structures around the sub-pixel are the same, as shown in Figure 2a The heights of two adjacent barrier wall structures 23' are not the same. Even if there is a height difference of 0.μm, the nano-level black ink particles will shuttle between adjacent sub-pixels, thereby causing poor display.

[0057] Based on the above problems and research, the present application proposes a reflective display panel, a manufacturing method and a display device to solve the above problems.

[0058] The first embodiment of the present application proposes a reflective display panel, as shown in Figure 3 The reflective display panel comprises:

[0059] a first substrate 31 and a second substrate 32 arranged oppositely, a barrier layer 33 comprising a plurality of opening areas arranged between the first substrate 31 and the second substrate 32, and a sub-pixel 34 located in each opening area;

[0060] The sub-pixel comprises ink material.

[0061] The barrier layer 33 comprises:

[0062] a first barrier part 331 formed on the first substrate 31; and

[0063] a second barrier part 332 formed on the second substrate 32 and corresponding to the first barrier part 331;

[0064] The surface of the first barrier part 331 towards the second substrate 32 and the surface of the second barrier part 332 towards the first substrate 31 are attached to make the adjacent sub-pixels 34 arranged independently.

[0065] The reflective display panel of the embodiment of the present application sets the blocking layer as the first blocking part and the second blocking part formed on the two substrates respectively, and forms the blocking layer through the first blocking part and the second blocking part, effectively improves the problem of different heights of the blocking layer caused by process errors, makes the formed opening area in a closed state, further makes the sub-pixels formed in each opening area independent of each other, effectively prevents the black ink particles in the sub-pixels from moving between different sub-pixels, thereby improving the display uniformity of the reflective display panel and improving the display effect.

[0066] In an optional embodiment, the first substrate is a driving TFT substrate, and the driving TFT substrate is provided with driving TFT transistors and a driving circuit. In a specific example, as shown in FIG. 1, the first substrate 31 is provided with an insulating layer 35 to ensure the normal operation of the driving circuit. Exemplarily, the material of the insulating layer 35 can be a layer of silicon oxide or silicon nitride, and a person skilled in the art can set it according to the actual application, which will not be described here. Figure 3

[0067] In an optional embodiment, the material of the first blocking part is a wave-absorbing material, and the material of the first blocking part includes one or more of carbon nanotubes, ferrite or nano-absorbing agent. In the embodiment, the first blocking part 331 is not only used to adhere to the corresponding second blocking part 332 to form the blocking layer 33 to achieve the purpose of blocking the sub-pixel 34, but also can play a role in absorbing electromagnetic waves on the basis, thereby improving the service life of the reflective display panel.

[0068] In an optional embodiment, the second substrate is a color film substrate. As shown in FIG. 1, the display panel further includes a filter layer 36 formed on the surface of the second substrate 32 facing the first substrate 31. Figure 3

[0069] The light shielding layer 361 is arranged corresponding to the blocking layer 33; and

[0070] The color filter 362 is arranged corresponding to the sub-pixel 34.

[0071] In the embodiment, the light shielding layer 361 is arranged between adjacent color filters 362 to prevent crosstalk between light lines of different colors.

[0072] ​​To avoid the blocking layer 33 from affecting the light emitting effect, the blocking layer 33 in the embodiment is arranged at the position of the light shielding layer 361, the projection of the light shielding layer 361 on the first substrate 31 covers the projection of the first blocking part 331 on the first substrate 31 and the projection of the second blocking part 332 on the first substrate 31, so that the first blocking part 331 and the second blocking part 332 are completely arranged at the position of the light shielding layer 361 and do not affect the light emitting effect of the reflective display panel.

[0073] In an optional embodiment, as shown in Figure 3 The display panel further includes a lens array 37 formed on the side surface of the light filtering layer 36 facing the first substrate 31, the lens array 37 includes a plurality of curved lenses, the curved surface of the curved lens faces the first substrate 31, and the second blocking part 332 is formed on the curved surface.

[0074] In a specific embodiment, the curved lens can be transparent, which can make the light transmittance of the reflective display panel higher. As shown in the figure, the surface of the curved lens close to the first substrate 31 (the driving TFT substrate) is a curved surface protruding towards the first substrate 31, for example, the curved surface can be prepared by nano-imprinting process or photolithography process, etc. For example, the curved surface can be part of a spherical surface (for example, a spherical surface or an ellipsoidal surface). Of course, the curved surface of the curved lens can also be other shapes, which can be set according to the design parameters of the reflective display panel, and the embodiments of the present application are not limited thereto.

[0075] In an optional embodiment, the material of the second blocking part is a thermoplastic material, for example: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), ABS (acrylonitrile-butadiene-styrene terpolymer), polyoxymethylene (POM), polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), polysulfone, polyphenylene ether, chlorinated polyether, etc.

[0076] In the embodiment, by using the characteristics of the wave-absorbing material to absorb and heat and by using the characteristics of the thermoplastic material to change shape under heat, the first blocking part 331 can generate a relatively high temperature after absorbing electromagnetic waves, and under the heat of the electromagnetic waves and the heat of the first blocking part 331, the second blocking part 332 can deform and adhere to the first blocking part 331, thereby forming a complete blocking layer 33 to achieve good blocking performance, blocking the area between the first substrate 31 and the second substrate 32 into a plurality of independent opening areas, further enabling the sub-pixels formed in the opening areas to be independent of each other, ensuring that the black ink ions in the sub-pixels do not shuttle to different sub-pixels, thereby improving the display uniformity.

[0077] In a specific example, a sealing glue 38 for encapsulating the sub-pixels 34 is further provided in the boundary region between the first substrate 31 and the second substrate 32 of this embodiment, thereby forming an encapsulated and fixed reflective display panel.

[0078] Corresponding to the above-mentioned reflective display panel, another embodiment of the present invention provides a method for preparing a reflective display panel, such as Figure 4 As shown, the method includes:

[0079] S1, forming a first barrier portion 331 of the barrier layer 33 on the first substrate 31;

[0080] S4, forming a second blocking portion 332 of the blocking layer 33 corresponding to the second blocking portion 332 on the second substrate 32;

[0081] S5, forming an ink material layer of the sub-pixel 34 on the first substrate 31 or the second substrate 32;

[0082] S6. Align the first substrate 31 and the second substrate 32 to form a blocking layer 33 including a plurality of opening areas and a sub-pixel 34 located in each of the opening areas, wherein the surface of the first blocking portion 331 facing the second substrate 32 and the surface of the second blocking portion 332 facing the first substrate 31 are adhered to allow adjacent sub-pixels 34 to be independently arranged.

[0083] The reflective display panel formed by the method of this embodiment is formed in two process steps, with the first blocking part and the second blocking part respectively formed. The first blocking part and the second blocking part are used to form a blocking layer together, which effectively improves the problem of different blocking layer heights caused by process errors, so that the formed opening area is in a closed state, and further makes the sub-pixels formed in each opening area independent of each other, effectively preventing the black ink particles in the sub-pixels from moving between different sub-pixels, thereby improving the display uniformity of the reflective display panel and enhancing the display effect.

[0084] Now producing Figure 3The manufacturing process of the method is described by taking the reflective display panel shown as an example. The "patterning process" in the embodiment of the present application includes deposition of a film layer, coating of photoresist, mask exposure, development, etching, stripping of photoresist, and other processes, which are mature preparation processes known in the art. Deposition can be performed by using known processes such as sputtering, evaporation, and chemical vapor deposition, coating can be performed by using known coating processes, and etching can be performed by using known methods, which are not limited herein. In the description of the embodiment of the present disclosure, "thin film" refers to a thin film of a certain material prepared on a substrate by using a deposition or coating process. If the "thin film" does not need a patterning process or a photolithography process during the entire manufacturing process, the "thin film" can also be referred to as a "layer". If the "thin film" still needs a patterning process or a photolithography process during the entire manufacturing process, it is referred to as a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process or the photolithography process contains at least one "pattern".

[0085] S1, forming a first barrier portion 331 of the barrier layer 33 on the first substrate 31.

[0086] For example, the display panel of the embodiment of the present application further includes an insulating layer 35 for insulation, such as Figure 5a As shown, before forming the first barrier portion 331, the insulating layer 35 is formed on the first substrate 31 (the driving TFT substrate). In one specific example, the material of the insulating layer can be silicon oxide or silicon nitride.

[0087] In an optional embodiment, the step S1 "forming a first barrier portion of the barrier layer on the first substrate" includes:

[0088] S11, forming a first barrier material layer on the first substrate 31.

[0089] In an optional embodiment, the material of the first barrier portion includes one or more of carbon nanotubes, ferrite, or nano-absorbing agent. For example, the first barrier material is formed by mixing ferrite and resin glue, and a first barrier material layer is formed on the insulating layer 35 of the first substrate 31. Figure 5a

[0090] S12, patterning the first barrier material layer to form the first barrier portion 331.

[0091] For example, the first barrier material layer is patterned by an exposure and etching process, as shown in Figure 5b As shown, the first barrier portion 331 of the embodiment is formed. On the basis of playing a role in blocking the flow of black ink particles in the sub-pixel 34, the second barrier portion formed by using the above-mentioned material can also play a role in absorbing electromagnetic waves, thereby improving the service life of the reflective display panel.​

[0092] In an optional embodiment, the second substrate is a color filter substrate, and before forming the second barrier portion 332 of the barrier layer 33 on the second substrate 32 corresponding to the second barrier portion 332, the method further comprises:

[0093] S2, forming a filter layer 36 on a side surface of the second substrate 32 facing the first substrate 31. As shown in Figure 3 , the filter layer 36 comprises a light shielding layer 361 arranged corresponding to the barrier layer 33 and a color filter 362 arranged corresponding to the sub-pixel 34, and a projection of the light shielding layer 361 on the first substrate 31 covers a projection of the first barrier portion 331 on the first substrate 31 and a projection of the second barrier portion 332 on the first substrate 31.

[0094] Therefore, for example, the step S2 of "forming a filter layer on a side surface of the second substrate facing the first substrate" can further comprise:

[0095] S21, forming a patterned light shielding layer 361 on the second substrate 32.

[0096] In order to prevent the first barrier portion 331 from affecting the light emission effect, in the present embodiment, the light shielding layer 361 is arranged corresponding to the first barrier portion 331, and a projection of the light shielding layer 361 on the second substrate 32 covers a projection of the first barrier portion 331 on the first substrate 31, so as to ensure that the light shielding layer 361 can not only block the crosstalk between light rays of different colors, but also shield the first barrier portion 331, ensuring the light emission effect and the display performance of the reflective display panel.

[0097] S22, forming a color filter 362 between adjacent light shielding layers 361.

[0098] For example, the color filter 362 comprises a red filter, a blue filter and a green filter. For example, the layer structure formed is as shown in Figure 5c .

[0099] In an optional embodiment, before forming the second barrier portion 332 of the barrier layer 33 on the second substrate 32 corresponding to the second barrier portion 332, the method further comprises:

[0100] S3, forming a lens array 37 on a side surface of the filter layer 36 facing the first substrate 31.

[0101] As shown in Figure 5d , the lens array 37 comprises a plurality of curved lenses, a curved surface of the curved lens faces the first substrate 31, and the second barrier portion is formed on the curved surface.

[0102] In a specific embodiment, the curved lens can be made of a transparent material, which can make the reflective display panel have a higher light transmittance. Figure 3 As shown, the surface of the curved lens near the first substrate 31 (driving TFT substrate) is a curved surface that is convex toward the first substrate 31. For example, the curved surface can be produced using a nanoimprint process or a photolithography process. For example, the curved surface can be a portion of a spherical surface (e.g., a spherical surface or an ellipsoidal surface). Of course, the curved surface of the curved lens can also have other shapes, which can be set according to the design parameters of the reflective display panel, and this embodiment of the present invention is not limited to this.

[0103] S4. Forming a second blocking portion 332 of the blocking layer 33 on the second substrate 32 corresponding to the second blocking portion 332 .

[0104] like Figure 5e As shown, a thermoplastic adhesive is used to form the second blocking portion 332 of this embodiment on the curved surface of the curved lens. For example, the height of the second blocking portion can be 3 to 10 μm. Due to process fluctuations, the film formation uniformity of the second blocking portion is ±5%. Taking the height of the second blocking portion as 5 μm as an example, the height difference between different second blocking portions is 0.25 μm, and the black ink particles in the sub-pixel 34 are nanometer-sized. Therefore, under the process fluctuations, the black ink particles can still flow from the gap formed by the second blocking portion 332 and the first substrate 31 to other sub-pixels 34, which is also the main reason for the poor display uniformity of the reflective display panel.

[0105] In an optional embodiment, the material of the second blocking portion is a thermoplastic material, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), ABS (acrylonitrile-butadiene-styrene terpolymer), polyoxymethylene (POM), polycarbonate (PC), polyamide (PA), polymethyl methacrylate (PMMA), polysulfone, polyphenylene ether, chlorinated polyether and the like. Therefore, this embodiment utilizes the characteristic of thermoplastic materials that their shape changes when heated. During the manufacturing process, the second blocking portion 332 is deformed and adheres to the first blocking portion 331, thereby forming a complete blocking layer 33 to achieve good blocking performance, and the area between the first substrate 31 and the second substrate 32 is separated into multiple independent opening areas, further enabling the sub-pixels 34 formed in the opening areas to be independent of each other, ensuring that the black ink ions in the sub-pixels 34 do not shuttle to different sub-pixels 34, thereby improving display uniformity.

[0106] Further, to prevent the second blocking part from affecting the light-out effect, in the embodiment, the light-shielding layer is arranged corresponding to the second blocking part, and the projection of the light-shielding layer on the second substrate covers the projection of the second blocking part on the first substrate, so as to ensure that the light-shielding layer can not only block the crosstalk between light rays of different colors, but also shield the first blocking part, ensure the light-out effect, and guarantee the display performance of the reflective display panel.

[0107] S5, forming an ink material layer of the sub-pixel 34 on the first substrate 31 or the second substrate 32.

[0108] For example, the ink material layer of the sub-pixel 34 is formed on the first substrate 31.

[0109] S6, assembling the first substrate 31 and the second substrate 32 to form a blocking layer 33 including a plurality of opening regions and a sub-pixel 34 in each of the opening regions.

[0110] In an optional embodiment, the step S6 of “assembling the first substrate and the second substrate to form a blocking layer including a plurality of opening regions and a sub-pixel in each of the opening regions” further includes:

[0111] S61, forming a sealant 38 on the second substrate 32 or the first substrate 31.

[0112] For example, the ink material layer of the sub-pixel 34 is formed on the first substrate 31 in the step S5, and in the embodiment, the sealant 38 is formed on the boundary region of the other substrate, i.e., the second substrate 32, to perform the subsequent assembling process.

[0113] In another specific example, the ink material layer of the sub-pixel 34 can also be formed on the second substrate 32 in the step S5, and correspondingly, the sealant 38 is also formed on the first substrate 31 in the step S61, which is not limited in the embodiment.

[0114] S62, assembling the first substrate 31 and the second substrate 32.

[0115] On the basis of the foregoing steps, the first substrate 31 on which the ink material layer is formed and the second substrate 32 on which the sealant 38 is formed are assembled, so as to form Figure 5e The structure schematic diagram is shown.

[0116] As Figure 4 and Figure 5eAs shown, due to process fluctuation error, the height of the second barrier portion 332 is not the same, so that the second barrier portion 332 and the first barrier portion 331 are not in contact from the gap, so that the black ink particles in the sub-pixel 34 can move to different sub-pixels 34, thereby causing the problem of poor display uniformity in the prior art.

[0117] S63, heat the first substrate 31 and the second substrate 32 after lamination, the first barrier portion 331 and the second barrier portion 332 are in close contact with the surface of the second substrate 32 and the surface of the first substrate 31 to form the barrier layer 33, and the plurality of opening regions of the barrier layer 33 respectively form the sub-pixel 34.

[0118] In this step, the second barrier portion 332 formed after lamination is heated. Figure 5e As shown, the lamination structure is heated, for example, using microwaves (for example, 2400-2500 MHZ). Since the first barrier portion 331 is made of a wave-absorbing material, the temperature of the first barrier portion 331 will rise during this process. The second barrier portion 332 is made of a thermoplastic material, and when the higher second barrier portion 332 is in contact with the surface of the first barrier portion 331, the end of the second barrier portion 332 towards the first substrate 31 will become soft (as shown by the dashed box position of the second barrier portion 332). Figure 5e As shown, the lamination structure is heated, for example, using microwaves (for example, 2400-2500 MHZ). Since the first barrier portion 331 is made of a wave-absorbing material, the temperature of the first barrier portion 331 will rise during this process. The second barrier portion 332 is made of a thermoplastic material, and when the higher second barrier portion 332 is in contact with the surface of the first barrier portion 331, the end of the second barrier portion 332 towards the first substrate 31 will become soft (as shown by the dashed box position of the second barrier portion 332).

[0119] As shown, the lamination structure is heated, for example, using microwaves (for example, 2400-2500 MHZ). Since the first barrier portion 331 is made of a wave-absorbing material, the temperature of the first barrier portion 331 will rise during this process. The second barrier portion 332 is made of a thermoplastic material, and when the higher second barrier portion 332 is in contact with the surface of the first barrier portion 331, the end of the second barrier portion 332 towards the first substrate 31 will become soft (as shown by the dashed box position of the second barrier portion 332). Figure 3 As shown, the lamination structure is heated, for example, using microwaves (for example, 2400-2500 MHZ). Since the first barrier portion 331 is made of a wave-absorbing material, the temperature of the first barrier portion 331 will rise during this process. The second barrier portion 332 is made of a thermoplastic material, and when the higher second barrier portion 332 is in contact with the surface of the first barrier portion 331, the end of the second barrier portion 332 towards the first substrate 31 will become soft (as shown by the dashed box position of the second barrier portion 332).

[0120] The reflective display panel formed by the method of the embodiment can effectively improve the problem of different heights of the barrier layer caused by process error by forming the first barrier portion and the second barrier portion in two process steps and forming the barrier layer by the first barrier portion and the second barrier portion, so that the opening region formed is in a closed state, and the sub-pixel formed in each opening region is in a mutually independent state, effectively preventing the black ink particles in the sub-pixel from moving between different sub-pixels, thereby improving the display uniformity of the reflective display panel and improving the display effect.

[0121] It is worth mentioning that the present application does not limit the display panel of the present application to the above-mentioned manufacturing method as the only way, i.e., the display panel formed by other methods is also within the protection scope of the present application. Figure 3 The display panel shown in the figure is also within the protection scope of the present application.

[0122] Since the display panel manufacturing method provided by the present application corresponds to the display panel provided by the above-mentioned several embodiments, the display panel manufacturing method provided by the present application is also applicable to the above-mentioned embodiments, which will not be described in detail in the present embodiment. It should be known by those skilled in the art that the above-mentioned embodiments and the beneficial effects brought by them are also applicable to the present embodiment, therefore, the same parts will not be described again.

[0123] Another embodiment of the present application provides a display device comprising the display panel as described in the above-mentioned embodiments. Exemplarily, the display device can be any product or component requiring display function, such as mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, vehicle-mounted central control file handle, etc., which is not limited by the present application.

[0124] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not the limitation of the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above-mentioned description, and it is impossible to enumerate all the embodiments here. Any changes or variations which are obvious to those skilled in the art and belong to the technical solution of the present application are still within the protection scope of the present application.

Claims

1. A reflective display panel, characterized in that: include: A first substrate and a second substrate disposed opposite to each other, a barrier layer disposed between the first substrate and the second substrate and comprising a plurality of opening regions, and a sub-pixel located in each of the opening regions; Wherein, the sub-pixel comprises ink material; The barrier layer comprises: a first barrier portion formed on the first substrate, wherein the material of the first barrier portion is a wave absorbing material; and a second barrier portion formed on the second substrate and corresponding to the first barrier portion, wherein the second barrier portion is made of thermoplastic material; The first barrier portion with increased temperature causes the height of the second barrier portion at the corresponding position to deform, so that the surface of the first barrier portion facing the second substrate and the surface of the second barrier portion facing the first substrate are aligned, so that the adjacent sub-pixels are independently arranged.

2. The display panel according to claim 1, wherein: The display panel further includes a filter layer formed on a surface of the second substrate facing the first substrate, the filter layer including: a light-shielding layer provided corresponding to the blocking layer; and Color filters arranged corresponding to the sub-pixels; The projection of the light shielding layer on the first substrate covers the projection of the first blocking portion on the first substrate and covers the projection of the second blocking portion on the first substrate.

3. The display panel according to claim 2, wherein: The display panel further includes a lens array formed on a surface of the filter layer facing the first substrate, the lens array including a plurality of curved lenses, the curved surfaces of the curved lenses facing the first substrate, and the second blocking portion formed on the curved surface.

4. The display panel according to any one of claims 1 to 3, wherein: The first substrate is a driving circuit substrate, and the second substrate is a color filter substrate.

5. A method for preparing a reflective display panel, characterized in that: include: forming a first barrier portion of a barrier layer on a first substrate, wherein the material of the first barrier portion is a wave absorbing material; forming a second barrier portion of the barrier layer corresponding to the first barrier portion on a second substrate, wherein the second barrier portion is made of a thermoplastic material; forming an ink material layer of a sub-pixel on the first substrate or the second substrate; The first substrate and the second substrate are aligning to form a barrier layer including a plurality of opening areas and sub-pixels located in each of the opening areas. The second barrier portion with an increased temperature causes the height of the first barrier portion at the corresponding position to deform so that the surface of the first barrier portion facing the second substrate and the surface of the second barrier portion facing the first substrate are adhered to each other so that adjacent sub-pixels are independently arranged.

6. The preparation method according to claim 5, characterized in that The first barrier portion forming the barrier layer on the first substrate includes: forming a first barrier material layer on the first substrate; The first barrier material layer is patterned to form the first barrier portion.

7. The preparation method according to claim 6, characterized in that The display panel further includes a filter layer provided on a surface of the second substrate facing the first substrate; Before forming a second barrier portion of the barrier layer corresponding to the first barrier portion on the second substrate, the method further includes: A filter layer is formed on a surface of the second substrate facing the first substrate, wherein the filter layer includes a light-shielding layer arranged corresponding to the blocking layer and a color filter arranged corresponding to the sub-pixel, and a projection of the light-shielding layer on the first substrate covers a projection of the first blocking portion on the first substrate and covers a projection of the second blocking portion on the first substrate.

8. The preparation method according to claim 7, characterized in that The display panel further includes a lens array arranged on a surface of the filter layer facing the first substrate; Before forming a second barrier portion of the barrier layer corresponding to the first barrier portion on the second substrate, the method further includes: A lens array is formed on a surface of the filter layer facing the first substrate, wherein the lens array includes a plurality of curved lenses, the curved surfaces of the curved lenses face the first substrate, and the second blocking portion is formed on the curved surface.

9. The preparation method according to claim 5, characterized in that The assembling of the first substrate and the second substrate to form a barrier layer including a plurality of opening regions and a sub-pixel located in each of the opening regions further comprises: forming a frame sealant on the second substrate or the first substrate; aligning the first substrate and the second substrate; After the first and second substrates are aligned, the surface of the first blocking portion facing the second substrate and the surface of the second blocking portion facing the first substrate are bonded to form the blocking layer, and the sub-pixels are respectively formed in the plurality of opening areas of the blocking layer.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 4.

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