Method for manufacturing display panel, display panel and display device

Abstract

This invention provides a method for fabricating a display panel, as well as the display panel and display device. The method includes the following steps: providing a substrate, the substrate including pixel opening regions and separation regions located between the pixel opening regions; forming a plurality of light-emitting devices on the substrate, each light-emitting device corresponding to a pixel opening region; forming a first conductive layer on the side of the light-emitting devices away from the substrate; forming a patterned barrier layer on the side of the first conductive layer away from the substrate, the barrier layer including a plurality of first patterns, each first pattern corresponding to a pixel opening region; forming an electrochromic layer on the side of the first conductive layer away from the substrate, a first portion of the electrochromic layer corresponding to a separation region, and a second portion of the electrochromic layer covering the barrier layer; removing the second portion of the electrochromic layer and the barrier layer using a peeling process; and forming a second conductive layer on the side of the electrochromic layer away from the substrate. The display panel obtained using the fabrication method of this invention has high luminous efficiency.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically to a method for manufacturing a display panel, the display panel itself, and a display device. Background Technology

[0002] With the development of display technology, electronic devices with displays, such as mobile phones and computers, are becoming increasingly widely used. In situations with wide viewing angles, users want the information displayed on their electronic devices to be private and not visible to others in the vicinity; in other words, they want their electronic devices to have a privacy feature.

[0003] In existing technology, privacy films are applied to the screens of electronic devices. These films filter out light from the device at wide viewing angles, thus preventing others from accessing the information displayed on the screen. However, the privacy film affects the light emission efficiency of the electronic device, and this issue needs to be addressed. Summary of the Invention

[0004] In view of the problems in the prior art, the purpose of this invention is to provide a method for manufacturing a display panel, a display panel and a display device, and to improve the light emission efficiency of a privacy display panel.

[0005] This invention provides a method for manufacturing a display panel, the method comprising the following steps:

[0006] A substrate is provided, the substrate including a pixel opening area and a partition area located between the pixel opening areas, and a plurality of light-emitting devices are formed on the substrate, the light-emitting devices corresponding one-to-one with the pixel opening areas;

[0007] A first conductive layer is formed on the side of the light-emitting device away from the substrate;

[0008] A patterned blocking layer is formed, the blocking layer including a plurality of first patterns, each of which corresponds to a pixel opening area;

[0009] An electrochromic layer is formed on the side of the first conductive layer away from the substrate. The first part of the electrochromic layer corresponds one-to-one with the separation area, and the second part of the electrochromic layer covers the barrier layer.

[0010] The second portion of the electrochromic layer and the barrier layer are removed using a stripping process;

[0011] A second conductive layer is formed on the side of the electrochromic layer away from the substrate.

[0012] In some embodiments, prior to forming the patterned barrier layer, the step further includes:

[0013] The first conductive layer is patterned to form multiple second patterns, each of which corresponds to one of the separation regions.

[0014] In some embodiments, the electrochromic layer covers the edge of the second pattern.

[0015] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the step of:

[0016] The second conductive layer is patterned to form a plurality of third patterns, each of which corresponds one-to-one with the second pattern.

[0017] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the step of:

[0018] The first conductive layer and the second conductive layer are patterned, the first conductive layer forms a plurality of second patterns, and the second conductive layer forms a plurality of third patterns, with each of the second patterns and the third patterns corresponding to the separation area.

[0019] In some embodiments, the electrochromic layer is formed using a coating process.

[0020] In some embodiments, after forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the step of:

[0021] A planarization layer is formed on the side of the second conductive layer away from the substrate;

[0022] A touch layer is formed on the side of the flat layer away from the substrate.

[0023] In some embodiments, before forming the first conductive layer on the side of the light-emitting device away from the substrate, the method further includes the step of:

[0024] An encapsulation layer is formed on the side of the light-emitting device away from the substrate.

[0025] This invention also provides a display panel, comprising:

[0026] The substrate includes pixel opening regions and partition regions located between the pixel opening regions;

[0027] Multiple light-emitting devices are disposed on one side of the substrate and correspond one-to-one with the pixel opening area;

[0028] The first conductive layer is located on the side of the light-emitting device away from the substrate;

[0029] A patterned electrochromic layer is located on the side of the first conductive layer away from the substrate, and corresponds one-to-one with the separation area;

[0030] The second conductive layer is located on the side of the electrochromic layer away from the substrate.

[0031] In some embodiments, the first conductive layer includes a plurality of second patterns, each of which corresponds to one of the separation regions.

[0032] In some embodiments, the second conductive layer includes a plurality of third patterns, each corresponding to one of the second patterns.

[0033] In some embodiments, the electrochromic layer covers the edge of the second pattern.

[0034] This invention also provides a display device, including the display panel described above.

[0035] The method for manufacturing the display panel, the display panel, and the display device provided by this invention have the following advantages:

[0036] The electrochromic layer obtained by the preparation method provided by the present invention has a uniform thickness and high positioning accuracy on the panel, which can improve the luminous efficiency of the display panel when it emits light. Furthermore, the present invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers above the light-emitting device, thereby improving the luminous efficiency of the light-emitting device and increasing the luminous brightness of the display panel. Attached Figure Description

[0037] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of the structure of a display panel in the prior art;

[0039] Figure 2 This is a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention;

[0040] Figures 3 to 8 This is a schematic diagram of the structure during the manufacturing process of the display panel in Embodiment 1 of the present invention;

[0041] Figure 9 This is a schematic diagram of the structure of the display panel provided in Embodiment 1 of the present invention;

[0042] Figures 10 to 14 This is a schematic diagram of the structure during the manufacturing process of the display panel in Embodiment 2 of the present invention;

[0043] Figure 15 This is a schematic diagram of the display panel structure according to Embodiment 2 of the present invention;

[0044] Figures 16 to 20 This is a schematic diagram of the structure during the manufacturing process of the display panel in Embodiment 3 of the present invention;

[0045] Figure 21 This is a schematic diagram of the structure of the display panel provided in Embodiment 3 of the present invention;

[0046] Figure 22 This is a schematic diagram of a display device provided in an embodiment of the present invention.

[0047] Figure label:

[0048] 50' Transparent enclosure portion 51 First pattern in the prior art

[0049] 60' Electrochromic section 60 Electrochromic layer in the prior art

[0050] 100 Display panel 61 First part electrochromic layer

[0051] 10 Substrate 62 Second part electrochromic layer

[0052] 11 pixel aperture area 70 second conductive layer

[0053] 12 Divider 71 Third Pattern

[0054] 20 Light-emitting devices 80 Planarization layer

[0055] 30 Encapsulation layer 81 First planarization layer

[0056] 40 First conductive layer 82 Second planarization layer

[0057] 41 Second Pattern 90 Touch Layer

[0058] 50 barrier layers 1000 display device Detailed Implementation

[0059] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0060] Figure 1 A schematic diagram of the structure of a display panel in the prior art is shown. For example... Figure 1As shown, a prior art display panel 100' with privacy protection includes a substrate 10' and, sequentially stacked on one side of the substrate 10', a light-emitting function 20', an encapsulation layer 30', a first conductive layer 40', an electrochromic layer, and a second conductive layer 70'. The electrochromic layer includes a transparent barrier portion 50' and an electrochromic portion 60'. The transparent barrier portion 50' has a hollow area, and the electrochromic portion 60' fills the hollow area. When different driving voltages are applied to the first conductive layer 40' and the second conductive layer 70', the voltage difference creates an electric field between the first conductive layer 40' and the second conductive layer 70'. Under the action of the electric field, the electrochromic portion 60' can change from a transparent state to a colored state. When the electrochromic portion 60' is in the colored state, it can absorb light, and the light only exits from the transparent barrier portion 50', thereby reducing the light emission angle of the display panel and enabling the display screen to be in a privacy protection state. Currently, when filling the hollow area of ​​the transparent enclosure 50' with the electrochromic part 60', inkjet printing is used to prepare it. However, the thickness accuracy of the electrochromic part 60' prepared by printing is low, and a small amount of electrochromic part material will flow into the transparent enclosure 50' area, affecting the light emission efficiency of the display panel.

[0061] To address the issue of low precision in electrochromic parts produced by existing printing techniques, which affects the light extraction efficiency of display panels, this invention provides a method for fabricating a display panel. Figure 2 A flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention is shown. Figure 2 As shown, the method for manufacturing a display panel includes the following steps:

[0062] S100: A substrate is provided, the substrate includes a pixel opening area and a separation area located between the pixel opening areas, and a plurality of light-emitting devices are formed on the substrate, the light-emitting devices corresponding one-to-one with the pixel opening areas;

[0063] S200: A first conductive layer is formed on the side of the light-emitting device away from the substrate;

[0064] S300: Forming a patterned barrier layer, the barrier layer includes multiple first patterns, each of which corresponds to a pixel opening area;

[0065] S400: An electrochromic layer is formed. The first part of the electrochromic layer corresponds to the separation area, and the second part of the electrochromic layer covers the barrier layer.

[0066] S500: The second part of the electrochromic layer and the barrier layer are removed using a stripping process;

[0067] S600: A second conductive layer is formed on the side of the electrochromic layer away from the substrate.

[0068] The display panel obtained by the above preparation method has a uniform thickness of electrochromic layer and high positioning accuracy on the panel, which can improve the luminous efficiency of the display panel when it emits light. In addition, the present invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers above the light-emitting device, thereby improving the luminous efficiency of the light-emitting device and increasing the luminous brightness of the display panel.

[0069] Furthermore, the present invention also provides a display panel fabricated using the above-described display panel fabrication method, which achieves all the technical effects of the above-described fabrication method. The display panel includes: a substrate, comprising pixel opening regions and partition regions located between the pixel opening regions;

[0070] Multiple light-emitting devices are disposed on one side of the substrate and correspond one-to-one with the pixel opening area;

[0071] The first conductive layer is located on the side of the light-emitting device away from the substrate;

[0072] A patterned electrochromic layer is located on the side of the first conductive layer away from the substrate, and corresponds one-to-one with the separation area;

[0073] The second conductive layer is located on the side of the electrochromic layer away from the substrate.

[0074] The display panel can be a flexible or rigid display. For example, the display can be an organic light-emitting diode (OLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, a liquid crystal display (LCD), etc.

[0075] Furthermore, embodiments of the present invention also provide a display device, including the display panel described above, so that the display device can achieve all the technical effects of the aforementioned display panel.

[0076] Specifically, the display device 1000 can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether it contains text or images. More specifically, the embodiments described are intended to be implemented in or associated with a variety of electronic devices. These various electronic devices include, but are not limited to, mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, car displays, electronic photographs, electronic billboards or signs, projectors, building structures, packaging and aesthetic structures, etc.

[0077] The following will further illustrate the method for preparing the display panel, as well as the display panel and display device of the present invention, with reference to the accompanying drawings and specific embodiments.

[0078] Example 1

[0079] Figures 3 to 7 A schematic diagram of the structure during the fabrication process of a display panel according to an embodiment of the present invention is shown. (In conjunction with...) Figures 2 to 7 Therefore, the method for manufacturing the display panel in this embodiment includes the following steps:

[0080] Step S100: A substrate 10 is provided, the substrate 10 including pixel opening regions 11 and separation regions 12 located between the pixel opening regions 11. A plurality of light-emitting devices 20 are formed on the substrate 10, and the light-emitting devices 20 correspond one-to-one with the pixel opening regions 11, resulting in the following... Figure 3 The structural diagram shown is illustrated. The light-emitting device 20 in this application is explained as an OLED light-emitting device.

[0081] Step S200: A first conductive layer 40 is formed on the side of the light-emitting device 20 away from the substrate 10, resulting in... Figure 4 The structural diagram shown.

[0082] Step S300: A patterned blocking layer 50 is formed. The blocking layer 50 includes multiple first patterns 51, and each first pattern 51 corresponds one-to-one with a pixel opening region 11, resulting in the following... Figure 5 The diagram shows the structure. To fabricate the patterned barrier layer 50, a coating process is first used to prepare the barrier layer 50 on the front side of the panel. Then, photolithography and etching techniques are used to form multiple first patterns 51 on the barrier layer 50. The first patterns 51 obtained using photolithography and etching techniques have high positional accuracy on the panel. Correspondingly, the accuracy of other positions not filled with the first patterns 51 is also high.

[0083] Step S400: Form an electrochromic layer 60, wherein the first part of the electrochromic layer 61 corresponds one-to-one with the separating region 12, and the second part of the electrochromic layer 62 covers the barrier layer 50, resulting in the following: Figure 6 The diagram shows the structure. The electrochromic layer 60 can be formed using a coating process. In some embodiments, the electrochromic layer 60 can be prepared using a coating process, which provides high thickness accuracy and thus improves the thickness uniformity of the electrochromic layer on the display panel.

[0084] Step S500: Remove the second electrochromic layer 62 and the barrier layer 50 using a stripping process to obtain the following... Figure 7 The structure diagram is shown. First, an electrochromic layer 60 is formed over the entire surface. The first part of the electrochromic layer 60, the electrochromic layer 61, fills the gap between adjacent first patterns 51. Then, the unwanted second part of the electrochromic layer 62 and the barrier layer 50 are removed using a peeling process. The resulting first part of the electrochromic layer 61 in the substrate 10 has a uniform thickness and is positioned with high precision, preventing it from flowing to the pixel opening area 11 and affecting the luminous efficiency of the light-emitting device 20.

[0085] Step S600: A second conductive layer 70 is formed on the side of the electrochromic layer 60 away from the substrate 10, resulting in... Figure 8 The diagram shows the structure. The first conductive layer 40 and the second conductive layer 70 can be transparent electrodes. It should be noted that since the first conductive layer 40 and the second conductive layer 70 cannot be electrically connected, the second conductive layer 70 is patterned here to form multiple third patterns 71. The third patterns 71 are located on the side of the electrochromic layer 60 away from the substrate 10.

[0086] The first conductive layer 40 and the second conductive layer 70 are respectively disposed at both ends of the second electrochromic layer 62. When different driving voltages are applied to the first conductive layer 40 and the second conductive layer 70, the voltage difference creates an electric field between the first conductive layer 40 and the second conductive layer 70. Under the action of the electric field, the first electrochromic layer 61 can change from a transparent state to a colored state. When the first electrochromic layer 61 is in the colored state, it can absorb light, and the light is only emitted from the small-angle area where the first electrochromic layer 61 is not disposed, thereby reducing the light emission angle of the display panel and enabling the display screen to be in a privacy mode.

[0087] The display panel obtained by the above preparation method has a uniform thickness of electrochromic layer 60 and high positional accuracy on the panel, which can improve the luminous efficiency of the display panel when it emits light. Furthermore, the invention eliminates the transparent material layer originally located between two adjacent first patterns of electrochromic layer 60, which can reduce the number of thin film layers above the light-emitting device 20, thereby improving the luminous efficiency of the light-emitting device and increasing the luminous brightness of the display panel.

[0088] Furthermore, such as Figure 3As shown, before forming the first conductive layer 40 on the side of the light-emitting device 20 away from the substrate 10, the following steps are also included:

[0089] An encapsulation layer 30 is formed on the side of the light-emitting device 20 away from the substrate 10.

[0090] The encapsulation layer 30 is used to isolate moisture and oxygen, providing a good encapsulation effect for the light-emitting device 20 and improving the service life of the light-emitting device 20.

[0091] Furthermore, such as Figure 9 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the process further includes the following steps:

[0092] A planarization layer 80 is formed on the side of the second conductive layer 70 away from the substrate 10;

[0093] A touch layer 90 is formed on the side of the planarization layer 80 away from the substrate 10.

[0094] The planarization layer 80 provides flatness to the surface of the display panel, thereby improving display quality and user experience. In this embodiment, the planarization layer 80 includes a first planarization layer 81 and a second planarization layer 82. In other embodiments, the planarization layer 80 may also be a single layer; no specific limitation is made here. The planarization layer 80 can be formed by inkjet printing.

[0095] The touch layer 90 is used to detect the touch position of a finger on the display panel and convert this position information into electrical signals to perform corresponding operations.

[0096] This invention also provides a display panel fabricated using the preparation method of this invention. For example... Figure 9 As shown, the display panel 100 includes:

[0097] The substrate 10 includes a pixel opening region 11 and a partition region 12 located between the pixel opening regions 11;

[0098] Multiple light-emitting devices 20 are disposed on one side of the substrate 10 and correspond one-to-one with the pixel opening area 11;

[0099] It is located away from the first conductive layer 40 and on the side of the light-emitting device 20 away from the substrate 10;

[0100] The patterned electrochromic layer 60 is located on the side of the first conductive layer 40 away from the substrate 10, and corresponds one-to-one with the separation region 12.

[0101] The second conductive layer 70 and the electrochromic layer 60 are located on the side away from the substrate 10.

[0102] The second conductive layer 70 includes a plurality of third patterns 71, each of which corresponds to a separation region 12.

[0103] Furthermore, the display panel 100 in this embodiment also includes: an encapsulation layer 30 located on the side of the light-emitting device 20 away from the substrate 10 and a filling separation area 12; a planarization layer 80 and a touch layer 90 located on the side of the second conductive layer 70 away from the substrate 10.

[0104] The display panel prepared using the preparation method provided in this embodiment can achieve all the technical effects of the preparation method, which will not be elaborated here.

[0105] Example 2

[0106] Figures 10 to 14 A schematic diagram of the structure during the fabrication process of a display panel according to another embodiment of the present invention is shown. Compared with the fabrication method of the display panel in Embodiment 1, steps S100 and S200 of the fabrication method in this embodiment are the same as those in Embodiment 1, and will not be repeated here. The difference is that, before forming the patterned barrier layer 50 on the side of the first conductive layer 40 away from the substrate 10 in step S300 of Embodiment 1, the following step is also included:

[0107] The first conductive layer 40 is patterned to form multiple second patterns 41, each of which corresponds one-to-one with a separating region 12, resulting in the following: Figure 10 The structure shown.

[0108] Since there is no patterned first conductive layer 40 in Example 1, the structural diagrams obtained in subsequent steps of the display panel fabrication process are different. The following is a detailed explanation. Figures 11 to 14 The steps shown will further explain the preparation method of this embodiment.

[0109] Furthermore, the preparation method provided in this embodiment of the invention further includes step S300: forming a patterned barrier layer 50, the barrier layer 50 including a plurality of first patterns 51, the first patterns 51 corresponding one-to-one with the pixel opening regions 11, to obtain as shown in the figure. Figure 11 The structure shown is different from that in Embodiment 1. Since the first conductive layer 40 includes a plurality of second patterns 41 and there is a gap between two adjacent second patterns 41, the first pattern 51 of the blocking layer 50 is disposed in the gap, instead of the first pattern 51 being disposed on the side of the first conductive layer 40 away from the substrate 10 in Embodiment 1. This is equivalent to the top of the light-emitting device 20 having one less thin film, which can improve the luminous efficiency of the light-emitting device 20 and the luminous brightness of the light-emitting device 20 to a certain extent.

[0110] Step S400: An electrochromic layer 60 is formed on the side of the first conductive layer 40 and the barrier layer 50 away from the substrate 10. The first portion of the electrochromic layer 61 corresponds one-to-one with the separating region 12, and the second portion of the electrochromic layer 62 covers the barrier layer 50, resulting in the following: Figure 12The structural diagram shown.

[0111] Step S500: Remove the second electrochromic layer 62 and the barrier layer 50 using a stripping process to obtain the following... Figure 13 The structural diagram shown.

[0112] Step S600: A second conductive layer 70 is formed on the side of the electrochromic layer 60 away from the substrate 10, and the second conductive layer 70 is patterned to form a plurality of third patterns 71, wherein the third patterns 71 correspond one-to-one with the second patterns 41, resulting in the following... Figure 14 The structure shown.

[0113] Compared to Embodiment 1, in this embodiment, the first conductive layer 40 and the second conductive layer 70 are both patterned graphics. The first conductive layer 40 and the second conductive layer 70 are only located on both sides of the second pattern 51 of the barrier layer 50. That is, the first conductive layer 40 and the second conductive layer 70 correspond one-to-one with the separation area 12. The pixel opening area 11 does not have the first conductive layer 40 and the second conductive layer 70. The number of film layers provided on the pixel opening area 11 is reduced, which will correspondingly increase the transmittance of the light-emitting device 20 when emitting light and increase the brightness of the display panel when emitting light.

[0114] The process steps for preparing the barrier layer 50 and the electrochromic layer 60 and the corresponding technical effects obtained can be referred to the explanation in Example 1, and will not be repeated here.

[0115] Furthermore, such as Figure 10 As shown, before forming the first conductive layer 40 on the side of the light-emitting device 20 away from the substrate 10, the following steps are also included:

[0116] An encapsulation layer 30 is formed on the side of the light-emitting device 20 away from the substrate 10.

[0117] The encapsulation layer 30 is used to isolate moisture and oxygen, providing a good encapsulation effect for the light-emitting display device.

[0118] Furthermore, such as Figure 15 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the process further includes the following steps:

[0119] A planarization layer 80 is formed on the side of the second conductive layer 70 away from the substrate 10;

[0120] A touch layer 90 is formed on the side of the planarization layer 80 away from the substrate 10.

[0121] The planarization layer 80 provides flatness to the surface of the display panel, thereby improving display quality and user experience. In this embodiment, the planarization layer 80 includes a first planarization layer 81 and a second planarization layer 82. In other embodiments, the planarization layer 80 may also be a single layer; no specific limitation is made here. The planarization layer 80 can be formed by inkjet printing.

[0122] The touch layer 90 is used to detect the touch position of a finger on the display panel and convert this position information into electrical signals to perform corresponding operations.

[0123] Furthermore, the formation of the patterned first conductive layer 40 and second conductive layer 70 in this embodiment can also include the following steps after step S600 in Embodiment 1, where the second conductive layer 70 is formed on the side of the electrochromic layer 60 away from the substrate 10:

[0124] The first conductive layer 40 and the second conductive layer 70 are patterned. The first conductive layer 40 forms a plurality of second patterns 41, and the second conductive layer 70 forms a plurality of third patterns 71. The second patterns 41 and the third patterns 71 correspond one-to-one with the separation area 12.

[0125] Patterning the first conductive layer 40 and the second conductive layer 70 in the same step can simplify the panel fabrication process and improve the panel fabrication efficiency.

[0126] This invention also provides a display panel fabricated using the preparation method of this invention. For example... Figure 15 As shown, the display panel 100 includes:

[0127] The substrate 10 includes a pixel opening region 11 and a partition region 12 located between the pixel opening regions 11;

[0128] Multiple light-emitting devices 20 are disposed on one side of the substrate 10 and correspond one-to-one with the pixel opening area 11;

[0129] The first conductive layer 40 is located on the side of the light-emitting device 20 away from the substrate 10; the first conductive layer 40 includes a plurality of second patterns 41, and the second patterns 41 correspond one-to-one with the separation area 12.

[0130] The patterned electrochromic layer 60 is located on the side of the first conductive layer 40 away from the substrate 10, and corresponds one-to-one with the separation region 12.

[0131] The second conductive layer 70 is located on the side of the electrochromic layer 60 away from the substrate 10; the second conductive layer 70 includes a plurality of third patterns 71, and the third patterns 71 correspond one-to-one with the second patterns 41.

[0132] Furthermore, the display panel 100 in this embodiment also includes: an encapsulation layer 30 located on the side of the light-emitting device 20 away from the substrate 10 and a filling separation area 12; a planarization layer 80 and a touch layer 90 located on the side of the second conductive layer 70 away from the substrate 10.

[0133] The display panel prepared using the preparation method provided in this embodiment can achieve all the technical effects of the preparation method, which will not be elaborated here.

[0134] Example 3

[0135] Figures 16 to 20 This is a schematic diagram illustrating the structural process of fabricating a display panel according to another embodiment of the present invention. Compared with the display panel fabrication method in Embodiment 2, the patterned first conductive layer 40 (e.g., ...) is obtained in this embodiment. Figure 16 The steps before (as shown) are the same and will not be repeated here. The difference is that in step S300, a patterned barrier layer 50 is formed. The barrier layer 50 includes a plurality of first patterns 51, each of which corresponds one-to-one with a pixel opening region 11. A gap is provided between each first pattern 51 and its adjacent patterned first conductive layer 40, resulting in the following... Figure 17 The structure shown.

[0136] Since there is no gap between the patterned first conductive layer 40 and the patterned barrier layer 50 in Example 2, the structural diagram of the display panel fabrication process obtained in subsequent steps is different. The following is a detailed explanation. Figures 18 to 20 The steps shown will further explain the preparation method of this embodiment.

[0137] Furthermore, the method for manufacturing the display panel provided in this embodiment of the invention further includes the following steps:

[0138] Step 400: An electrochromic layer 60 is formed on the side of the first conductive layer 40 away from the substrate 10. A first portion of the electrochromic layer 61 corresponds one-to-one with the separating region 12, and the first portion of the electrochromic layer 61 covers the edge of the second pattern 41. A second portion of the electrochromic layer 62 covers the barrier layer 50, resulting in... Figure 18 The structural diagram shown. The electrochromic layer 60 covers the first conductive layer 40, further improving the privacy angle.

[0139] Step S500: Remove the second electrochromic layer 62 and the barrier layer 50 using a stripping process to obtain the following... Figure 19 The structural diagram shown.

[0140] Step S600: A second conductive layer 70 is formed on the side of the electrochromic layer 60 away from the substrate 10, resulting in... Figure 20 The structure shown.

[0141] The process steps for preparing the barrier layer 50 and the electrochromic layer 60 and the corresponding technical effects obtained can be referred to the explanation in Example 1, and will not be repeated here.

[0142] Furthermore, before forming the first conductive layer 40 on the side of the light-emitting device 20 away from the substrate 10, the method further includes the following steps:

[0143] An encapsulation layer 30 is formed on the side of the light-emitting device 20 away from the substrate 10, resulting in... Figure 16 The structural diagram shown.

[0144] The encapsulation layer 30 is used to isolate moisture and oxygen, providing a good encapsulation effect for the light-emitting display device.

[0145] Furthermore, such as Figure 21 As shown, after forming the second conductive layer 70 on the side of the electrochromic layer 60 away from the substrate 10, the process further includes the following steps:

[0146] A planarization layer 80 is formed on the side of the second conductive layer 70 away from the substrate 10;

[0147] A touch layer 90 is formed on the side of the planarization layer 80 away from the substrate 10.

[0148] The planarization layer 80 provides flatness to the surface of the display panel, thereby improving display quality and user experience. In this embodiment, the planarization layer 80 includes a first planarization layer 81 and a second planarization layer 82. In other embodiments, the planarization layer 80 may also be a single layer; no specific limitation is made here. The planarization layer 80 can be formed by inkjet printing.

[0149] The touch layer 90 is used to detect the touch position of a finger on the display panel and convert this position information into electrical signals to perform corresponding operations.

[0150] This invention also provides a display panel fabricated using the preparation method of this invention. For example... Figure 21 As shown, the display panel 100 includes:

[0151] The substrate 10 includes a pixel opening region 11 and a partition region 12 located between the pixel opening regions 11;

[0152] Multiple light-emitting devices 20 are disposed on one side of the substrate 10 and correspond one-to-one with the pixel opening area 11;

[0153] The first conductive layer 40 is located on the side of the light-emitting device 20 away from the substrate 10; the first conductive layer 40 includes a plurality of second patterns 41, and the second patterns 41 correspond one-to-one with the separation area 12.

[0154] The patterned electrochromic layer 60 is located on the side of the first conductive layer 40 away from the substrate 10 and corresponds one-to-one with the separation region 12; the electrochromic layer 60 covers the edge of the second pattern 41.

[0155] The second conductive layer 70 and the electrochromic layer 60 are located on the side away from the substrate 10.

[0156] Furthermore, the display panel 100 in this embodiment also includes: an encapsulation layer 30 located on the side of the light-emitting device 20 away from the substrate 10 and a filling separation area 12; a planarization layer 80 and a touch layer 90 located on the side of the second conductive layer 70 away from the substrate 10.

[0157] The display panel prepared using the preparation method provided in this embodiment can achieve all the technical effects of the preparation method, which will not be elaborated here.

[0158] Example 4

[0159] The invention also provides a display device, including the display panel described above. Figure 22 A schematic diagram of a display device according to an embodiment of the present invention is shown. Figure 22 As shown, the display device includes the display panel 100 as described above, and thus all the technical effects of the display panel 100 can be obtained, which will not be repeated here.

[0160] The method for manufacturing the display panel, the display panel, and the display device provided by this invention have the following advantages:

[0161] This invention utilizes a combination of coating and stripping techniques to prepare an electrochromic layer. The resulting electrochromic layer has uniform thickness and high positional accuracy on the panel, which can improve the luminous efficiency of the display panel when it emits light. Furthermore, this invention eliminates the transparent material layer originally located between two adjacent first patterns of the electrochromic layer, which can reduce the number of thin film layers above the light-emitting device, thereby also improving the luminous efficiency of the light-emitting device and increasing the brightness of the display panel.

[0162] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a display panel, characterized in that, The preparation method includes the following steps: A substrate is provided, the substrate including a pixel opening area and a partition area located between the pixel opening areas, and a plurality of light-emitting devices are formed on the substrate, the light-emitting devices corresponding one-to-one with the pixel opening areas; A first conductive layer is formed on the side of the light-emitting device away from the substrate; The first conductive layer is patterned to form a plurality of second patterns, each of which corresponds to a separate region. A patterned blocking layer is formed, the blocking layer including a plurality of first patterns, each of which corresponds to a pixel opening area; An electrochromic layer is formed on the side of the first conductive layer away from the substrate. The first part of the electrochromic layer corresponds one-to-one with the separation area, and the second part of the electrochromic layer covers the barrier layer. The second portion of the electrochromic layer and the barrier layer are removed using a stripping process; A second conductive layer is formed on the side of the electrochromic layer away from the substrate.

2. The method for manufacturing a display panel according to claim 1, characterized in that, The electrochromic layer covers the edge of the second pattern.

3. The method for manufacturing a display panel according to claim 1 or 2, characterized in that, After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the following steps: The second conductive layer is patterned to form a plurality of third patterns, each of which corresponds one-to-one with the second pattern.

4. The method for manufacturing a display panel according to claim 1, characterized in that, After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the following steps: The first conductive layer and the second conductive layer are patterned, the first conductive layer forms a plurality of second patterns, and the second conductive layer forms a plurality of third patterns, with each of the second patterns and the third patterns corresponding to the separation area.

5. The method for manufacturing a display panel according to claim 1, characterized in that, The electrochromic layer is formed using a coating process.

6. The method for manufacturing a display panel according to claim 1, characterized in that, After forming the second conductive layer on the side of the electrochromic layer away from the substrate, the method further includes the following steps: A planarization layer is formed on the side of the second conductive layer away from the substrate; A touch layer is formed on the side of the flat layer away from the substrate.

7. The method for manufacturing a display panel according to claim 1, characterized in that, Before forming the first conductive layer on the side of the light-emitting device away from the substrate, the method further includes the following steps: An encapsulation layer is formed on the side of the light-emitting device away from the substrate.

8. A display panel, characterized in that, The display panel is manufactured using the manufacturing method of any one of claims 1 to 7, comprising: The substrate includes pixel opening regions and partition regions located between the pixel opening regions; Multiple light-emitting devices are disposed on one side of the substrate and correspond one-to-one with the pixel opening area; The first conductive layer is located on the side of the light-emitting device away from the substrate; A patterned electrochromic layer is located on the side of the first conductive layer away from the substrate, and corresponds one-to-one with the separation area; The second conductive layer is located on the side of the electrochromic layer away from the substrate.

9. The display panel according to claim 8, characterized in that, The first conductive layer includes a plurality of second patterns, each of which corresponds to one of the separation regions.

10. The display panel according to claim 9, characterized in that, The second conductive layer includes a plurality of third patterns, each of which corresponds to a second pattern.

11. The display panel according to claim 9, characterized in that, The electrochromic layer covers the edge of the second pattern.

12. A display device, characterized in that, Includes the display panel as described in any one of claims 8 to 11.

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