Display panel and display device

Abstract

The application belongs to the display field and particularly relates to a display panel and a display device. The display panel comprises a first substrate, a second substrate, a barrier wall, a first display medium and a second display medium. The second substrate is arranged on one side of the first substrate. The barrier wall is arranged between the first substrate and the second substrate. The barrier wall is arranged around each pixel area. The first display medium is arranged between the first substrate and the second substrate. Each first display medium is arranged in the pixel area one by one. The first display medium comprises electronic ink or cholesteric liquid crystal. The second display medium is arranged on any side of the second substrate. The second display medium comprises nematic liquid crystal, electronic ink or cholesteric liquid crystal. The second display medium is arranged in the area of the barrier wall. The highest brightness of the screen and the pixel aperture ratio can be improved, and the contrast of the display panel is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] Electronic paper (ePaper) is a reflective display panel with unique advantages such as paper-like display, low power consumption, and eye protection. It can be used in e-book readers, electronic tags, electronic whiteboards, and commercial billboards.

[0003] The electronic paper includes a substrate and a counter substrate arranged opposite each other. Both the substrate and the counter substrate include sub-pixel regions arranged in an array along the row and column directions. A barrier and electronic ink are disposed between the substrate and the counter substrate. The barrier surrounds each sub-pixel region, and the electronic ink is disposed in each sub-pixel region.

[0004] The barrier itself does not contain e-ink. The wider the barrier, the smaller the effective display area, resulting in a decrease in the screen's maximum brightness and pixel aperture ratio, which in turn reduces contrast. In addition, the mixing of different particles at the edges of the sub-pixel area and the tendency for the electric field to distort near the barrier's sidewalls cause the pixel edges to appear grayish, further reducing overall contrast. Summary of the Invention

[0005] The purpose of this application is to provide a display panel and display device to improve the pixel aperture ratio and contrast of the display panel.

[0006] To achieve the above objectives, this application provides a display panel, including a first substrate, and the display panel further includes:

[0007] The second substrate is disposed on one side of the first substrate. One of the first substrate and the second substrate is an array substrate and the other is a counter substrate. Both the first substrate and the second substrate include multiple pixel areas arrayed along the row direction and the column direction. A barrier is disposed between the first substrate and the second substrate, the barrier surrounding each pixel region; A first display medium is disposed between the first substrate and the second substrate, and each of the first display media is disposed in a pixel area in a one-to-one correspondence. The first display medium includes electronic ink or cholesteric liquid crystal. A second display medium is disposed on one side of the second substrate. The orthographic projection of the second display medium on the first substrate is located within the orthographic projection of the barrier on the first substrate. The second display medium includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal.

[0008] Optionally, the barrier wall has a first receiving hole on the side near the second substrate. The first receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent first receiving holes are spaced apart or connected. The second display medium is disposed in the first receiving hole.

[0009] Optionally, the materials of the first display medium and the second display medium are the same. The first substrate is an array substrate. The first substrate includes a first substrate, a driving circuit layer, a planarization layer, a first pixel electrode, and a second pixel electrode. The driving circuit layer is formed on the side of the first substrate close to the second substrate. The planarization layer is formed on the side of the driving circuit layer away from the first substrate. The first pixel electrode and the second pixel electrode are both formed on the side of the planarization layer close to the second substrate. The orthographic projection of the pixel region on the first substrate coincides with the orthographic projection of the first pixel electrode on the first substrate. The orthographic projection of the first accommodating hole on the row direction and / or column direction side of each pixel region on the first substrate is located within the orthographic projection of the second pixel electrode on the first substrate. The first pixel electrode and the second pixel electrode corresponding to each pixel region are connected. One of the first pixel electrode and the second pixel electrode is connected to the driving circuit layer.

[0010] Optionally, the materials of the first display medium and the second display medium are different. The first substrate is an array substrate. The first substrate includes a first substrate, a driving circuit layer, a planarization layer, a first pixel electrode, and a second pixel electrode. The driving circuit layer is formed on the side of the first substrate near the second substrate. The planarization layer is formed on the side of the driving circuit layer away from the first substrate. A recessed groove is provided on the side of the planarization layer near the second substrate. The first pixel electrode is formed on the side of the planarization layer near the second substrate and located outside the recessed groove. The second pixel electrode is located on the bottom surface of the recessed groove. The baffle portion is embedded in the recessed groove. The first pixel electrode and the second pixel electrode are respectively connected to the driving circuit layer.

[0011] Optionally, the second substrate includes a second substrate, and the second substrate has a second receiving hole on the side away from the first substrate. The second receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent second receiving holes are spaced apart or connected. The second display medium is disposed in the second receiving hole. The display panel also includes a third substrate, which is disposed on the side of the second substrate away from the first substrate.

[0012] Optionally, the second substrate is an array substrate, and the second substrate further includes a driving circuit layer, a first pixel electrode, and a second pixel electrode. The second pixel electrode is formed on the side of the second substrate close to the first substrate, the driving circuit layer is formed on the side of the second pixel electrode away from the second substrate, and the first pixel electrode is formed on the side of the driving circuit layer away from the second substrate. The orthographic projection of the pixel region on the second substrate coincides with the orthographic projection of the first pixel electrode on the second substrate. The orthographic projection of the second accommodating hole on the row direction and / or column direction side of each pixel region on the second substrate is located within the orthographic projection of the second pixel electrode on the second substrate. The first pixel electrode and the second pixel electrode are respectively connected to the driving circuit layer.

[0013] Optionally, the second display medium includes a nematic liquid crystal, and the display panel further includes a third substrate and a fourth substrate, one of which is an array substrate and the other is an opposing substrate. The third substrate is located on the side of the fourth substrate closer to the second substrate. The third substrate is provided with a third receiving hole on the side of the third substrate closer to the fourth substrate, or the fourth substrate is provided with a third receiving hole on the side of the fourth substrate closer to the third substrate. The third receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent third receiving holes are spaced apart or connected, and the second display medium is disposed in the third receiving hole.

[0014] Optionally, the fourth substrate has a third receiving hole on the side near the third substrate. The third substrate is an array substrate. The third substrate includes a third substrate and an electrode layer. The electrode layer is formed on the side of the third substrate near the fourth substrate. The electrode layer includes second pixel electrodes and second common electrodes that are spaced apart. The fourth substrate includes a fourth substrate. The third receiving hole is located on the side of the fourth substrate near the third substrate.

[0015] Optionally, when the second display medium is a nematic liquid crystal or a cholesteric liquid crystal, a dichroic dye is added to the nematic liquid crystal or the cholesteric liquid crystal.

[0016] This application also provides a display device, including: The display panel; The motherboard is connected to the display panel.

[0017] The display panel and display device disclosed in this application have the following beneficial effects: In this application, the display panel includes a first substrate, a second substrate, a barrier, a first display medium, and a second display medium. The second substrate is disposed on one side of the first substrate, and the barrier is disposed between the first and second substrates, surrounding each pixel area. The first display medium is disposed between the first and second substrates, with each first display medium corresponding to a pixel area. The first display medium includes electronic ink or cholesteric liquid crystal. The second display medium is disposed on either side of the second substrate, and the second display medium includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal. The placement of the second display medium in the area where the barrier is located can increase the maximum brightness and pixel aperture ratio of the screen, thereby improving the contrast ratio of the display panel.

[0018] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the display panel in the dark state in Embodiment 1 of this application.

[0022] Figure 2 This is a schematic diagram of the display panel in the bright state in Embodiment 1 of this application.

[0023] Figure 3 This is a schematic diagram of the display panel in the dark state in Embodiment 2 of this application.

[0024] Figure 4 This is a schematic diagram of the display panel in the bright state in Embodiment 2 of this application.

[0025] Figure 5 This is a schematic diagram of the display panel in the dark state in Embodiment 3 of this application.

[0026] Figure 6 This is a schematic diagram of the display panel in the bright state in Embodiment 3 of this application.

[0027] Figure 7 This is a schematic diagram of the display device in Embodiment 4 of this application.

[0028] Explanation of reference numerals in the attached figures: 100, First substrate; 110, First substrate; 120, Driving circuit layer; 130, Planarization layer; 141, First pixel electrode; 142, Second pixel electrode; 200, Second substrate; 210, Second substrate; 211, Second accommodating hole; 220, First common electrode; 300. Retaining wall; 301. First receiving hole; 400, First display medium; 500, Second display medium; 600, Third substrate; 601, Electrode layer; 610, Third substrate; 620, Second common electrode; 700, Fourth substrate; 710, Third receiving hole; 10. Display panel; 20. Motherboard. Detailed Implementation

[0029] 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 examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0030] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0031] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0032] Example 1 See Figure 1 and Figure 2As shown, in this embodiment, the display panel 10 includes a first substrate 100, a second substrate 200, a barrier 300, a first display medium 400, and a second display medium 500. The second substrate 200 is disposed on one side of the first substrate 100. One of the first substrate 100 and the second substrate 200 is an array substrate and the other is an opposing substrate. Both the first substrate 100 and the second substrate 200 include a plurality of pixel areas arrayed along the row direction and the column direction.

[0033] A barrier 300 is disposed between the first substrate 100 and the second substrate 200, surrounding each pixel area. The barrier 300 may be made of a black or transparent organic material. A first display medium 400 is disposed between the first substrate 100 and the second substrate 200, with each first display medium 400 corresponding to a pixel area. The barrier 300 surrounds each pixel area to form a plurality of microcavity structures arranged in a row and column direction array, and the first display medium 400 is specifically disposed within the microcavity structure. The first display medium 400 includes electronic ink or cholesteric liquid crystal.

[0034] The second display medium 500 is disposed on either side of the second substrate 200, and the orthographic projection of the second display medium 500 on the first substrate 100 is located within the orthographic projection of the barrier 300 on the first substrate 100. The second display medium 500 includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal.

[0035] It should be noted that the first display medium 400 and the second display medium 500 may be the same or different. When the first display medium 400 is electronic ink, the second display medium 500 may be one of nematic liquid crystal, electronic ink and cholesteric liquid crystal. When the first display medium 400 is cholesteric liquid crystal, the second display medium 500 may be one of nematic liquid crystal, electronic ink and cholesteric liquid crystal.

[0036] When the first display medium 400 uses electronic ink, the electronic ink may include black charged particles and white charged particles. The black and white charged particles have different charge polarities, that is, one of the black and white charged particles is positively charged and the other is negatively charged. If color display is required, a color filter layer may be provided on the second substrate 200. It should be understood that when the first display medium 400 uses electronic ink, color charged particles can also be used to achieve color display, and the second substrate 200 does not need to be provided with a color filter layer.

[0037] When the second display medium 500 is a nematic liquid crystal, the barrier 300 needs to be made of a transparent organic material. Furthermore, if the display panel 10 needs to achieve color display, when the second display medium 500 is a nematic liquid crystal, the first display medium 400 can be electronic ink, which may include black charged particles and white charged particles, while the second substrate 200 is provided with a color filter layer.

[0038] In related technologies, the barrier 300 itself does not contain a display medium. The larger the width of the barrier 300, the smaller the effective display area, resulting in a decrease in the screen's maximum brightness and pixel aperture ratio, which in turn reduces contrast. In addition, different particles are mixed at the edges of the sub-pixel area, and the electric field near the side wall of the barrier 300 is prone to distortion, causing the pixel edges to appear grayish and reducing the overall contrast.

[0039] In this embodiment, the display panel 10 includes a first substrate 100, a second substrate 200, a barrier 300, a first display medium 400, and a second display medium 500. The second substrate 200 is disposed on one side of the first substrate 100, and the barrier 300 is disposed between the first substrate 100 and the second substrate 200, surrounding each pixel area. The first display medium 400 is disposed between the first substrate 100 and the second substrate 200, with each first display medium 400 corresponding to a pixel area. The first display medium 400 includes electronic ink or cholesteric liquid crystal. The second display medium 500 is disposed on any side of the second substrate 200, and the second display medium 500 includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal. The placement of the second display medium 500 in the area where the barrier 300 is located can improve the maximum brightness of the screen and the pixel aperture ratio, thereby improving the contrast of the display panel 10.

[0040] In some embodiments, when the second display medium 500 is a nematic liquid crystal or a cholesteric liquid crystal, a dichroic dye is added to the nematic liquid crystal or the cholesteric liquid crystal.

[0041] Dichroic dyes exhibit directional absorption of light; absorption is strong when the polarization direction of light is parallel to the long axis of the dye molecules, and weak when the polarization direction is perpendicular to the long axis of the dye molecules. The liquid crystal molecules themselves are rod-shaped and can change their alignment under an electric field. The dye molecules rotate synchronously with the liquid crystal molecules, forming a host-guest liquid crystal system. This reduces the dark-state brightness of the second display medium 500, which helps improve the contrast of the display panel 10.

[0042] In some embodiments, the barrier 300 has a first receiving hole 301 on the side near the second substrate 200. The first receiving hole 301 is located at least on one side of each pixel area in the row direction and / or column direction, for example, the first receiving hole 301 is provided on the right side in the row direction and the lower side in the column direction of each pixel area. Adjacent first receiving holes 301 are spaced apart or connected, and the second display medium 500 is disposed in the first receiving hole 301. When all the first receiving holes 301 are connected, all the first receiving holes 301 form a groove structure with the same shape as the outer contour of the barrier 300.

[0043] The second display medium 500 is disposed in the retaining wall 300 without increasing the thickness of the display panel 10. When the display panel 10 is used in a display device, the display device can be made thinner and lighter.

[0044] In some embodiments, the materials of the first display medium 400 and the second display medium 500 are the same. The first substrate 100 is an array substrate, and includes a first substrate 110, a driving circuit layer 120, a planarization layer 130, a first pixel electrode 141, and a second pixel electrode 142. The driving circuit layer 120 is formed on the side of the first substrate 110 near the second substrate 200, and the planarization layer 130 is formed on the side of the driving circuit layer 120 away from the first substrate 110. Both the first pixel electrode 141 and the second pixel electrode 142 are formed on the side of the planarization layer 130 near the second substrate 200.

[0045] The orthographic projection of the pixel region on the first substrate 110 coincides with the orthographic projection of the first pixel electrode 141 on the first substrate 110. The orthographic projection of the first receiving hole 301 on one side of the row direction and / or column direction of each pixel region on the first substrate 110 is located within the orthographic projection of the second pixel electrode 142 on the first substrate 110. The first pixel electrode 141 and the second pixel electrode 142 corresponding to each pixel region are connected. One of the first pixel electrode 141 and the second pixel electrode 142 is connected to the driving circuit layer 120.

[0046] It should be noted that when a first receiving hole 301 is provided on one side of each pixel area in both the row and column directions, the first receiving holes 301 belonging to the same sub-pixel can be connected. Each sub-pixel includes a first display medium 400 corresponding to each pixel area and a second display medium 500 within the first receiving hole 301 corresponding to the pixel area.

[0047] The materials of the first display medium 400 and the second display medium 500 are the same, and the first display medium 400 and the second display medium 500 belonging to the same sub-pixel can be driven by the same voltage.

[0048] In some embodiments, the materials of the first display medium 400 and the second display medium 500 are different. The first substrate 100 is an array substrate, comprising a first substrate 110, a driving circuit layer 120, a planarization layer 130, a first pixel electrode 141, and a second pixel electrode 142. The driving circuit layer 120 is formed on the side of the first substrate 110 near the second substrate 200, and the planarization layer 130 is formed on the side of the driving circuit layer 120 away from the first substrate 110. A recessed groove is provided on the side of the planarization layer 130 near the second substrate 200. The recessed groove may penetrate the planarization layer 130 or may not penetrate it. The first pixel electrode 141 is formed on the side of the planarization layer 130 near the second substrate 200 and located outside the recessed groove. The second pixel electrode 142 is located on the bottom surface of the recessed groove. A retaining wall 300 is partially embedded in the recessed groove. The first pixel electrode 141 and the second pixel electrode 142 are respectively connected to the driving circuit layer 120.

[0049] The materials of the first display medium 400 and the second display medium 500 are different, and the materials of the first display medium 400 and the second display medium 500 are driven by different pixel electrodes provided with driving voltages.

[0050] In this embodiment, the second substrate 200 may include a second substrate 210 and a first common electrode 220, with the first common electrode 220 formed on the side of the second substrate 210 near the first substrate 100. When the second display medium 500 is a nematic liquid crystal, the first substrate 100, the second display medium 500, and the second substrate 200 can form a vertical alignment (VA) liquid crystal cell or a twisted nematic (TN) liquid crystal cell. It should be understood that the first common electrode 220 may also be disposed on one side of the first substrate 100, and the first substrate 100, the second display medium 500, and the second substrate 200 can form an in-plane switching (IPS) liquid crystal cell.

[0051] The method for manufacturing the display panel 10 disclosed in this embodiment may include the following steps: S1: A driving circuit layer 120 and a planarization layer 130 are sequentially formed on the first substrate 110, and a sinkhole is formed on the planarization layer 130. S2: A first pixel electrode 141 and a second pixel electrode 142 are formed on the driving circuit layer 120; S3: A barrier 300 is formed on the side of the second pixel electrode 142 near the second substrate 200, and the first receiving hole 301 on the barrier 300 is exposed and developed by photolithography. S4: Drop the first display medium 400 into the microcavity structure of the barrier 300, and drop the second display medium 500 into the first receiving hole 301; S5: Fabricate a second substrate 200, and assemble and bond the second substrate 200 with the first substrate 100 to form a display panel 10.

[0052] Example 2 The main difference between Embodiment 2 and Embodiment 1 is that the position of the second display medium 500 is different.

[0053] See Figure 3 and Figure 4 As shown, the second substrate 200 includes a second substrate 210. A second receiving hole 211 is provided on the side of the second substrate 210 away from the first substrate 100. The second receiving hole 211 is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent second receiving holes 211 are spaced apart or connected. The second display medium 500 is disposed in the second receiving hole 211. The display panel 10 also includes a third substrate 600, which is disposed on the side of the second substrate 200 away from the first substrate 100.

[0054] It should be noted that the third substrate 600 can be an array substrate, and pixel electrodes and common electrodes for driving the second display medium 500 can be disposed on the third substrate 600. The second substrate 200, the second display medium 500, and the third substrate 600 can form a planar conversion type liquid crystal cell. Since the second display medium 500 is disposed in the second receiving hole 211 of the second substrate 210, the first receiving hole 301 does not need to be disposed on the barrier 300.

[0055] A second receiving hole 211 is formed in the second substrate 210, and the second display medium 500 is disposed in the second receiving hole 211. This does not change the structure of the barrier 300, but can improve the maximum brightness of the screen and the pixel aperture ratio, thereby improving the contrast of the display panel 10.

[0056] In some embodiments, the second substrate 200 is an array substrate, and the second substrate 200 further includes a driving circuit layer 120, a first pixel electrode 141, and a second pixel electrode 142. The second pixel electrode 142 is formed on the side of the second substrate 210 close to the first substrate 100, the driving circuit layer 120 is formed on the side of the second pixel electrode 142 away from the second substrate 210, and the first pixel electrode 141 is formed on the side of the driving circuit layer 120 away from the second substrate 210. The orthographic projection of the pixel region on the second substrate 210 coincides with the orthographic projection of the first pixel electrode 141 on the second substrate 210. The orthographic projection of the second receiving hole 211 on one side of the row direction and / or column direction of each pixel region on the second substrate 210 is located within the orthographic projection of the second pixel electrode 142 on the second substrate 210. The first pixel electrode 141 and the second pixel electrode 142 are respectively connected to the driving circuit layer 120.

[0057] The second pixel electrode 142 is used to drive the second display medium 500. The second pixel electrode 142 is disposed between the driving circuit layer 120 and the second substrate 210, and is closer to the second display medium 500, so the voltage required to drive the second display medium 500 is lower.

[0058] It should be noted that the first substrate 100 may be a counter substrate. The first substrate 100 may include a first substrate 110 and a first common electrode 220 disposed on the side of the first substrate 110 near the second substrate 200. The first pixel electrode 141 and the first common electrode 220 form a vertical electric field to drive the first display medium 400. The third substrate 600 may include a third substrate 610 and a second common electrode 620. The second common electrode 620 is formed on the side of the third substrate 610 near the second substrate 200. The second pixel electrode 142 and the second common electrode 620 can form a vertical electric field to drive the second display medium 500. The second substrate 200, the second display medium 500 and the third substrate 600 can form a vertically aligned liquid crystal cell or a twisted nematic liquid crystal cell. It should be understood that the second common electrode 620 can also be disposed between the driving circuit layer 120 and the second substrate 210. The second pixel electrode 142 and the second common electrode 620 are disposed at intervals to form a horizontal electric field to drive the second display medium 500. The second substrate 200, the second display medium 500 and the third substrate 600 can form a planar conversion type liquid crystal cell.

[0059] Example 3 The main difference between Embodiment 3 and Embodiment 1 is that the position of the second display medium 500 is different.

[0060] See Figure 5 and Figure 6As shown, the second display medium 500 includes a nematic liquid crystal. The display panel 10 includes a first substrate 100, a second substrate 200, and a first display medium 400, with a specific structure as shown in Embodiment 1. The display panel 10 also includes a third substrate 600 and a fourth substrate 700, one of which is an array substrate and the other is an opposing substrate. The third substrate 600 is located on the side of the fourth substrate 700 near the second substrate 200. A third receiving hole 710 is provided on the side of the third substrate 600 near the fourth substrate 700, or a third receiving hole 710 is provided on the side of the fourth substrate 700 near the third substrate 600. The third receiving hole 710 is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent third receiving holes 710 are spaced apart or connected, and the second display medium 500 is disposed in the third receiving hole 710.

[0061] The second display medium 500 is disposed on the third substrate 600 and the fourth substrate 700. The liquid crystal cell formed by the third substrate 600, the second display medium 500 and the fourth substrate 700 can be fabricated separately from the structure formed by the first substrate 100, the first display medium 400 and the second substrate 200.

[0062] In some embodiments, a third receiving hole 710 is provided on the side of the fourth substrate 700 near the third substrate 600. The third substrate 600 is an array substrate, and includes a third substrate 610 and an electrode layer 601, which is formed on the side of the third substrate 610 near the fourth substrate 700. The electrode layer 601 includes second pixel electrodes 142 and second common electrodes 620 disposed at intervals. The fourth substrate 700 includes a fourth substrate, which may be a transparent substrate such as a glass substrate or a polyimide substrate. The third receiving hole 710 is located on the side of the fourth substrate near the third substrate 600.

[0063] It should be noted that since the second display medium 500 is disposed in the third receiving hole 710 of the fourth substrate 700, the first receiving hole 301 does not need to be disposed on the barrier 300; the second pixel electrode 142 for driving the second display medium 500 does not need to be fabricated on the first substrate 100 or the second substrate 200.

[0064] The second pixel electrode 142 and the second common electrode 620 driving the second display medium 500 are disposed on the same layer. The third substrate 600, the second display medium 500 and the fourth substrate 700 can form a planar conversion type liquid crystal cell. This liquid crystal cell only requires one electrode layer 601, and the structure of the liquid crystal cell is simpler.

[0065] The method for manufacturing the display panel 10 disclosed in this embodiment may include the following steps: S1: First substrate 100 and second substrate 200 are fabricated respectively. A barrier 300 is fabricated on the first substrate 100. Then, the first display medium 400 is dropped into the microcavity structure of the barrier 300. The second substrate 200 and the first substrate 100 are then assembled and bonded together. S2: A third receiving hole 710 is formed on the fourth substrate 700, and a second display medium 500 is dropped into the third receiving hole 710; S3: Fabricate the third substrate 600 and assemble and bond the third substrate 600 with the fourth substrate 700; S4: The second substrate 200 and the third substrate 600 are bonded together to form a display panel 10.

[0066] Example 4 See Figure 7 As shown, in this embodiment, the display device includes a display panel 10 and a main board 20 as disclosed in one of embodiments one to three, and the main board 20 is connected to the display panel 10. When the second display medium 500 of the display panel 10 is a nematic liquid crystal, the display device may also include a backlight module, and the display panel 10 is disposed on the light-emitting side of the backlight module.

[0067] In this embodiment, the display device includes a display panel 10. The display panel 10 includes a first substrate 100, a second substrate 200, a barrier 300, a first display medium 400, and a second display medium 500. The second substrate 200 is disposed on one side of the first substrate 100, and the barrier 300 is disposed between the first substrate 100 and the second substrate 200, surrounding each pixel area. The first display medium 400 is disposed between the first substrate 100 and the second substrate 200, with each first display medium 400 corresponding to a pixel area. The first display medium 400 includes electronic ink or cholesteric liquid crystal. The second display medium 500 is disposed on any side of the second substrate 200, and the second display medium 500 includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal. The placement of the second display medium 500 in the area where the barrier 300 is located can improve the maximum brightness of the screen and the pixel aperture ratio, thereby improving the contrast of the display panel 10.

[0068] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display panel, comprising a first substrate, characterized in that, The display panel also includes: The second substrate is disposed on one side of the first substrate. One of the first substrate and the second substrate is an array substrate and the other is a counter substrate. Both the first substrate and the second substrate include multiple pixel areas arrayed along the row direction and the column direction. A barrier is disposed between the first substrate and the second substrate, the barrier surrounding each pixel region; A first display medium is disposed between the first substrate and the second substrate, and each of the first display media is disposed in a pixel area in a one-to-one correspondence. The first display medium includes electronic ink or cholesteric liquid crystal. A second display medium is disposed on one side of the second substrate. The orthographic projection of the second display medium on the first substrate is located within the orthographic projection of the barrier on the first substrate. The second display medium includes nematic liquid crystal, electronic ink, or cholesteric liquid crystal.

2. The display panel according to claim 1, characterized in that, The barrier wall has a first receiving hole on the side near the second substrate. The first receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent first receiving holes are spaced apart or connected. The second display medium is disposed in the first receiving hole.

3. The display panel according to claim 2, characterized in that, The first display medium and the second display medium are made of the same material. The first substrate is an array substrate. The first substrate includes a first substrate, a driving circuit layer, a planarization layer, a first pixel electrode, and a second pixel electrode. The driving circuit layer is formed on the side of the first substrate close to the second substrate. The planarization layer is formed on the side of the driving circuit layer away from the first substrate. The first pixel electrode and the second pixel electrode are both formed on the side of the planarization layer close to the second substrate. The orthographic projection of the pixel region on the first substrate coincides with the orthographic projection of the first pixel electrode on the first substrate. The orthographic projection of the first accommodating hole on the row direction and / or column direction side of each pixel region on the first substrate is located within the orthographic projection of the second pixel electrode on the first substrate. The first pixel electrode and the second pixel electrode corresponding to each pixel region are connected. One of the first pixel electrode and the second pixel electrode is connected to the driving circuit layer.

4. The display panel according to claim 2, characterized in that, The materials of the first display medium and the second display medium are different. The first substrate is an array substrate. The first substrate includes a first substrate, a driving circuit layer, a planarization layer, a first pixel electrode, and a second pixel electrode. The driving circuit layer is formed on the side of the first substrate close to the second substrate. The planarization layer is formed on the side of the driving circuit layer away from the first substrate. A recessed groove is provided on the side of the planarization layer close to the second substrate. The first pixel electrode is formed on the side of the planarization layer close to the second substrate and located outside the recessed groove. The second pixel electrode is located on the bottom surface of the recessed groove. The baffle portion is embedded in the recessed groove. The first pixel electrode and the second pixel electrode are respectively connected to the driving circuit layer.

5. The display panel according to claim 1, characterized in that, The second substrate includes a second substrate, and a second receiving hole is provided on the side of the second substrate away from the first substrate. The second receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent second receiving holes are spaced apart or connected. The second display medium is disposed in the second receiving hole. The display panel also includes a third substrate, which is disposed on the side of the second substrate away from the first substrate.

6. The display panel according to claim 5, characterized in that, The second substrate is an array substrate. The second substrate further includes a driving circuit layer, a first pixel electrode, and a second pixel electrode. The second pixel electrode is formed on the side of the second substrate close to the first substrate. The driving circuit layer is formed on the side of the second pixel electrode away from the second substrate. The first pixel electrode is formed on the side of the driving circuit layer away from the second substrate. The orthographic projection of the pixel region on the second substrate coincides with the orthographic projection of the first pixel electrode on the second substrate. The orthographic projection of the second accommodating hole on the row direction and / or column direction side of each pixel region on the second substrate is located within the orthographic projection of the second pixel electrode on the second substrate. The first pixel electrode and the second pixel electrode are respectively connected to the driving circuit layer.

7. The display panel according to claim 1, characterized in that, The second display medium includes a nematic liquid crystal, and the display panel further includes a third substrate and a fourth substrate. One of the third substrate and the fourth substrate is an array substrate and the other is an opposing substrate. The third substrate is located on the side of the fourth substrate closer to the second substrate. The third substrate is provided with a third receiving hole on the side of the third substrate closer to the fourth substrate, or the fourth substrate is provided with a third receiving hole on the side of the fourth substrate closer to the third substrate. The third receiving hole is located at least on one side of the pixel area in the row direction and / or column direction. Adjacent third receiving holes are spaced apart or connected. The second display medium is disposed in the third receiving hole.

8. The display panel according to claim 7, characterized in that, The fourth substrate has a third receiving hole on the side near the third substrate. The third substrate is an array substrate. The third substrate includes a third substrate and an electrode layer. The electrode layer is formed on the side of the third substrate near the fourth substrate. The electrode layer includes second pixel electrodes and second common electrodes that are spaced apart. The fourth substrate includes a fourth substrate. The third receiving hole is located on the side of the fourth substrate near the third substrate.

9. The display panel according to any one of claims 1 to 8, characterized in that, When the second display medium is a nematic liquid crystal or a cholesteric liquid crystal, a dichroic dye is added to the nematic liquid crystal or the cholesteric liquid crystal.

10. A display device, characterized in that, include: The display panel as described in any one of claims 1 to 9; The motherboard is connected to the display panel.

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