Display panel, control method, control device, equipment and storage medium thereof

Abstract

The present disclosure relates to a display panel, a control method, a control device, a device and a storage medium. The display panel comprises a first display module and a second display module stacked on the light-out side of the first display module. The first display module comprises a pixel array and a protective layer located on the side of the pixel array close to the second display module. The pixel array comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a plurality of sub-pixel units. The second display module comprises a light-blocking layer and display particles. The light-blocking layer is located on the side of the protective layer away from the pixel array. The light-blocking layer comprises a plurality of light-blocking units. The light-blocking units are opposite to the areas between adjacent sub-pixel units. The display particles are located in the areas between adjacent light-blocking units. The first display module and the second display module are used for displaying images. The display panel can solve the problem of glare.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display panel, a control method and device thereof, an apparatus, and a storage medium. BACKGROUND

[0002] New display technologies include electronic paper displays, liquid crystal displays (LCD), active organic light-emitting diode (OLED) displays, etc. The electronic paper display simulates the display principle of traditional paper and realizes gray scale display by reflecting ambient light, so that the user's viewing comfort is higher. The LCD and OLED displays can display high color gamut color images, enriching the colors of the displayed images.

[0003] In the prior art, an electronic paper display and an OLED display are combined to display high color gamut color images and save energy when displaying gray scale images. However, in the above technical solution, when the OLED display is used for display, the internal OLED display is prone to reflecting external ambient light, thereby interfering with the normal display light beam emitted from the OLED, resulting in glare problems. SUMMARY

[0004] The present disclosure provides a display panel, a control method and device thereof, an apparatus, and a storage medium, which can solve the glare problem.

[0005] In a first aspect, the present disclosure provides a display panel, comprising: a first display module, and a second display module stacked on the light-emitting side of the first display module.

[0006] The first display module comprises: a pixel array and a protective layer located on the side of the pixel array close to the second display module, the pixel array comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a plurality of sub-pixel units.

[0007] The second display module comprises: a light shielding layer and display particles, the light shielding layer is located on the side of the protective layer away from the pixel array; the light shielding layer comprises: a plurality of light shielding units, the light shielding units are opposite to the regions between adjacent sub-pixel units, and the display particles are located in the regions between adjacent light shielding units.

[0008] The first display module and the second display module are configured to display images.

[0009] Optionally, the first display module is configured to display images in a first working mode and provide backlight to the second display module in a second working mode.

[0010] The second display module is configured to display images in the second working mode and the third working mode.

[0011] Optionally, the light shielding unit comprises a first surface, a second surface and a third surface, wherein the first surface is a surface of the light shielding unit close to the protective layer, the second surface is opposite to the first surface, and the third surface connects the first surface and the second surface and faces the region between the adjacent sub-pixel units.

[0012] The vertical projection of the first surface on the protective layer is located in the vertical projection of the second surface on the protective layer.

[0013] The second display module further comprises an electrode covering the third surface.

[0014] The electrode is configured to adsorb the display particles to make the second display module transparent in the first working mode, and drive the display particles to display images in the second working mode and the third working mode.

[0015] Optionally, the light shielding layer comprises a plurality of light shielding strips extending along a first direction and arranged along a second direction, and a plurality of light shielding strips extending along the second direction and arranged along the first direction, wherein the first direction and the second direction are a row direction and a column direction of the pixel array, respectively.

[0016] In a plane perpendicular to the extension direction of the light shielding strips, the vertical projection of the light shielding strips is at least one of an inverted trapezoidal shape, an inverted triangular shape and a T shape.

[0017] Optionally, the vertical projection of the second surface on the plane where the pixel array is located is located in the region between the adjacent sub-pixel units.

[0018] Optionally, the second display module further comprises a transparent substrate.

[0019] The transparent substrate is located between the protective layer and the light shielding layer.

[0020] Optionally, the second display module is an electronic paper display screen, and the first display module comprises one of a liquid crystal display (LCD) screen, an organic light-emitting diode (OLED) display screen and a micro light-emitting diode (Micro LED) display screen.

[0021] In a second aspect, the present disclosure provides a control method of a display panel, which is applied to any one of the display panels provided in the first aspect.

[0022] The method comprises:

[0023] determining a working mode of the display panel.

[0024] In the first working mode, the first display module is controlled to display an image;

[0025] In the second working mode, the first display module is controlled to provide backlight for a second display module, and the second display module displays an image;

[0026] In the third working mode, the second display module is controlled to display an image.

[0027] Optionally, in the first working mode, the first display module is controlled to display an image, including:

[0028] According to the first working mode instruction, the electrode is controlled to adsorb display particles, so that the second display module transmits light;

[0029] The first display module is controlled to display an image.

[0030] Optionally, in the second working mode, the first display module is controlled to provide backlight for the second display module, and the second display module displays an image, including:

[0031] According to the second working mode instruction, the first display module is controlled to emit light, and the electrode is controlled to drive display particles to display an image.

[0032] Optionally, in the third working mode, the second display module is controlled to display an image, including:

[0033] According to the third working mode instruction, the first display module is controlled to be turned off, and the electrode is controlled to drive display particles to display an image.

[0034] Optionally, according to the second working mode instruction, the first display module is controlled to emit light, including:

[0035] According to the second working mode instruction, a luminance value and / or a color gamut value are generated;

[0036] According to the luminance value and / or the color gamut value, the first display module is controlled to emit light.

[0037] In a third aspect, the present disclosure provides a control device of a display panel, which is applied to any one of the display panels provided in the first aspect;

[0038] The control device comprises:

[0039] A determination module is configured to determine a working mode of the display panel.

[0040] The control module is configured to control the first display module to display an image in a first working mode, control the first display module to provide backlight for a second display module in a second working mode, and control the second display module to display an image in a third working mode.

[0041] In a fourth aspect, the present disclosure provides an electronic device including any of the display panels provided in the first aspect.

[0042] In a fifth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, and the computer program, when executed by a processor, implements the steps of any of the methods provided in the second aspect.

[0043] In the technical solutions provided by the present disclosure, the display panel includes a first display module and a second display module stacked on the light exit side of the first display module. The first display module includes a pixel array and a protective layer located on the side of the pixel array close to the second display module. The pixel array includes a plurality of pixel units arranged in an array, and each pixel unit includes a plurality of sub-pixel units. The second display module includes a light shielding layer and display particles. The light shielding layer is located on the side of the protective layer away from the pixel array. The light shielding layer includes a plurality of light shielding units, and each light shielding unit is opposite to the area between adjacent sub-pixel units. The display particles are located in the area between adjacent light shielding units. The first display module and the second display module can both display images. In this way, the light shielding layer does not block the light beams emitted by the sub-pixel units, thereby avoiding affecting the display quality of the first display module. In addition, the light shielding layer can shield part of the ambient light, thereby reducing the intensity of the ambient light incident into the first display module. That is, the intensity of the ambient light emitted by the first display module can be reduced. The light shielding units can also shield the ambient light reflected by the metal traces in the first display module, thereby further reducing the intensity of the ambient light emitted by the first display module. As a result, the glare problem can be solved, and the eyes of the user can be protected. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0046] Figure 1 A structural schematic diagram of a display panel provided by the present disclosure is shown in the figure.

[0047] Figure 2 Another structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 9;

[0048] Figure 3 Another structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 9;

[0049] Figure 4 A top view structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 10;

[0050] Figure 5 Another top view structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 11;

[0051] Figure 6 Another structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 9;

[0052] Figure 7 A flowchart of a control method of a display panel provided by the present disclosure is shown in FIG. 12;

[0053] Figure 8 A flowchart of a control method of a display panel provided by the present disclosure is shown in FIG. 12;

[0054] Figure 9 A flowchart of a control method of a display panel provided by the present disclosure is shown in FIG. 12;

[0055] Figure 10 A flowchart of a control method of a display panel provided by the present disclosure is shown in FIG. 12;

[0056] Figure 11 A flowchart of a control method of a display panel provided by the present disclosure is shown in FIG. 12;

[0057] Figure 12 A structural schematic diagram of a control device of a display panel provided by the present disclosure is shown in FIG. 13. DETAILED DESCRIPTION

[0058] In order to enable a person skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the schemes of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0059] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, not all the embodiments.

[0060] Figure 1 A structural schematic diagram of a display panel provided by the present disclosure is shown in FIG. 9; Figure 1As shown, the display panel 10 comprises a first display module 100 and a second display module 200 stacked on the light exit side of the first display module 100.

[0061] The first display module 100 comprises a pixel array 110 and a protective layer 120 located on the side of the pixel array 110 close to the second display module 200. The pixel array 110 comprises a plurality of pixel units 111 arranged in an array. Each pixel unit 111 comprises a plurality of sub-pixel units 111a.

[0062] The second display module 200 comprises a light shielding layer 210 and display particles 220. The light shielding layer 210 is located on the side of the protective layer 120 away from the pixel array 110. The light shielding layer 210 comprises a plurality of light shielding units 211. Each light shielding unit 211 is opposite to the region between adjacent sub-pixel units. The display particles 220 are located in the region between adjacent light shielding units 211.

[0063] The first display module 100 and the second display module 200 are configured to display an image.

[0064] The pixel array 110 comprises a plurality of pixel units 111 arranged in an array along the X direction and the Y direction. Figure 1 As shown, each pixel unit 111 can comprise three sub-pixel units 111a, which are a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit, respectively. The first display module 100 can display a color image through the red sub-pixel unit, the green sub-pixel unit and the blue sub-pixel unit. In other embodiments, each pixel unit 111 can comprise four sub-pixel units 111a, which are a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit and a white sub-pixel unit, respectively. In this embodiment, the types of sub-pixel units are not specifically limited.

[0065] For example, the preparation process of the first display module 100 can comprise the following steps: providing a substrate 130, arranging a driving array layer 140 on one side of the substrate 130, the driving array layer 140 comprising a plurality of driving units arranged in an array, the driving units being configured to drive corresponding sub-pixel units 111a to emit light. The pixel array 110 and the protective layer 120 are arranged in sequence on the side of the driving array layer 140 away from the substrate 130. The protective layer 120 can block the inside of the first display module 100 from the outside air, protect the internal structure of the first display module 100 from the moisture in the air, and buffer the external stress received by the first display module 100, thereby playing a protective role. This embodiment only exemplarily demonstrates the process of the first display module, and does not specifically limit the process of the first display module.

[0066] There is a certain gap between adjacent sub-pixel units 111a. Metal traces are provided in the area corresponding to the gaps. These metal traces are used to electrically connect the corresponding sub-pixel units 111a and the driving circuit, so that the driving circuit can control the sub-pixel units 111a to emit light. The sub-pixel units 111a are located within the display area of ​​the first display module 100. That is to say, the metal traces are located within the display area. When ambient light shines into the interior of the first display module 100, the metal traces inside the first display module 100 will reflect the ambient light. The reflected ambient light will be emitted through the light-emitting surface of the first display module 100, resulting in a high intensity of ambient light emitted by the first display module 100. When the user views the image displayed by the first display module 100, glare will occur.

[0067] For example, a black organic adhesive is coated on the side of the protective layer 120 away from the pixel array 110, the black organic adhesive layer is etched and cured to form a plurality of light-shielding units 211, and the light-shielding units 211 face the area between adjacent sub-pixels 111a. The light-shielding units 211 may be light-shielding strips extending in the X direction and arranged in the Y direction, and / or light-shielding strips extending in the Y direction and arranged in the X direction, or light-shielding blocks arranged in the X and Y directions. This embodiment does not specifically limit the specific shape of the light-shielding units or the color of the light-shielding blocks.

[0068] Based on the above embodiment, the area between adjacent light-shielding units 211 is filled with display particles 220. The display particles 220 include white display particles and black display particles. The white display particles can reflect the light beam, thus displaying white, while the black display particles can absorb the light beam, thus displaying black. In this way, the second display module 200 can display a black and white image through the white and black display particles.

[0069] Metal traces are provided between adjacent sub-pixel units 111a, and the light-shielding unit 211 can cover the metal traces within the first display module 100. When the first display module 100 displays an image, the light beam emitted by the sub-pixel unit 111a exits through the area between adjacent light-shielding units 211, such as... Figure 1 As shown (solid arrows indicate the light beam emitted by sub-pixel unit 111a for displaying images), the light-blocking unit 211 will not block the light beam emitted by sub-pixel unit 111a, thus avoiding any impact on the display effect of the first display module 100.

[0070] While the sub-pixel 111a within the first display module 100 emits a light beam to display an image, ambient light also illuminates the interior of the first display module 100. Since the light-shielding unit 211 is located on the light-emitting side of the first display module 100, it blocks some of the ambient light before it reaches the first display module 100.Figure 1 The light blocking unit 211 can block part of the ambient light from being emitted from the light emitting surface of the first display module 100, thereby further reducing the intensity of the ambient light emitted from the first display module 100. In this way, the problem of glare of the display panel 10 is solved, and the eyes of the user are protected.

[0071] In this embodiment, the display panel includes a first display module and a second display module stacked on the light emitting side of the first display module. The first display module includes a pixel array and a protective layer located on the side of the pixel array close to the second display module. The pixel array includes a plurality of pixel units arranged in an array, and each pixel unit includes a plurality of sub-pixel units. The second display module includes a light blocking layer and display particles. The light blocking layer is located on the side of the protective layer away from the pixel array. The light blocking layer includes a plurality of light blocking units. The light blocking units are opposite the regions between adjacent sub-pixel units. The display particles are located in the regions between adjacent light blocking units. The first display module and the second display module can both display images. In this way, the light blocking layer does not block the light beams emitted by the sub-pixel units, thereby avoiding affecting the display quality of the first display module. In addition, the light blocking layer can block part of the ambient light, thereby reducing the intensity of the ambient light incident into the first display module. That is, the intensity of the ambient light emitted from the first display module can be reduced. The light blocking units can also block the ambient light reflected by the metal traces in the first display module, thereby further reducing the intensity of the ambient light emitted from the first display module. In this way, the problem of glare is solved, and the eyes of the user are protected.

[0072] Optionally, the first display module 100 is configured to display images in a first working mode and provide backlight for the second display module 200 in a second working mode. The second display module 200 is configured to display images in the second working mode and a third working mode.

[0073] When the display panel 10 is in the first working mode, the light beams emitted by the sub-pixel units 111a in the first display module 100 pass through the regions between adjacent light blocking units 211 in the second display module 200 and are emitted from the light emitting surface of the second display module 200. In this way, the first display module 100 can display color images.

[0074] When the display panel 10 is in the third working mode, the first display module 100 can be turned off, and the display particles 220 in the second display module 200 are distributed in the regions between the adjacent light shielding units 211. Some of the display particles 220 can absorb ambient light, and the other display particles 220 can reflect ambient light. In this way, the second display module 200 can display black and white images under the irradiation of ambient light.

[0075] When the display panel 10 is in the second working mode, the display particles 220 are distributed in the regions between the adjacent light shielding units 211, and the light beams emitted by the sub-pixel units 111a in the first display module 100 irradiate the display particles 220 located in the regions between the adjacent light shielding units 211. Some of the display particles 220 can absorb the light beams emitted by the sub-pixel units 111a, and the other display particles 220 can reflect the light beams emitted by the sub-pixel units 111a. In this way, the second display module 200 can display black and white images in a dark environment by using the light beams emitted by the first display module 100 as backlight.

[0076] In summary, in the embodiment, the display panel can display color images through the first display module, display black and white images through the second display module, and display black and white images through the second display module by using the light beams emitted by the first display module as backlight in a dark environment. Therefore, the display panel can be applied to various display scenarios, improve the display diversity of the display panel, and reduce the energy consumption of the display panel.

[0077] Optionally, Figure 2 FIG. 2 shows a structural schematic diagram of another display panel provided by the present disclosure, Figure 3 FIG. 3 shows a structural schematic diagram of yet another display panel provided by the present disclosure, which is combined with Figure 2 and Figure 3 As shown in FIG. 1, the light shielding unit 211 includes a first surface 211a, a second surface 211b, and a third surface 211c. The first surface 211a is a surface of the light shielding unit 211 close to the protective layer 120, the second surface 211b is opposite to the first surface 211a, and the third surface 211c connects the first surface 211a and the second surface 211b and faces the region between the adjacent sub-pixel units 111a.

[0078] The vertical projection of the first surface 211a on the protective layer 120 is located in the vertical projection of the second surface 211b on the protective layer 120.

[0079] In combination with Figure 2 and Figure 3As shown, the second display module 200 further comprises an electrode 230 covering the third surface 211c. The electrode 230 is configured to adsorb the display particles 220 to make the second display module 200 transparent in the first working mode, and drive the display particles 220 to display images in the second working mode and the third working mode.

[0080] Specifically, as shown in Figure 2 and Figure 3 , the surface of the light shielding unit 211 away from the protective layer 120 is the second surface 211b, and the surface of the light shielding unit 211 close to the protective layer 120 is the first surface 211a. The second surface 211b can cover the first surface 211a. Exemplarily, the vertical projection of the light shielding unit 211 in the XZ plane is an inverted trapezoid, as shown in Figure 2 and Figure 3 , the vertical projection of the second surface 211b in the XZ plane is the long side of the inverted trapezoid, the vertical projection of the first surface 211a in the XZ plane is the short side of the inverted trapezoid, and the vertical projection of the third surface 211c in the XZ plane is the two waists of the inverted trapezoid.

[0081] After forming the light shielding layer 210, electrode evaporation is performed on the third surface 211c to form the electrode 230 covering the third surface 211c. Based on the above embodiment, the vertical projection of the electrode 230 in the XZ plane covers the waist of the inverted trapezoid, as shown in Figure 2 and Figure 3 . The electrode 230 is electrically connected to the driving circuit and can generate a corresponding electric field according to the electric signal provided by the driving circuit to drive the display particles 220 to move.

[0082] If the display panel 10 is in the first working mode, the electrode 230 generates a first electric field according to the received first electric signal. Under the action of the first electric field, the display particles 220 move to the area where the electrode 230 is located, so that the display particles are adsorbed on the electrode 230, as shown in Figure 2 , the area between the adjacent light shielding units 211 is in a transparent state. In this way, the light beam emitted by the first display module 100 can pass through the area between the adjacent light shielding units 211, that is, it can pass through the second display module 200, thereby ensuring that the display panel 10 can display color images through the first display module 100. In addition, since the second surface 211b can cover the first surface 211a, the first surface 211a can also cover the display particles 220, so that when the first display module 100 displays images, the display particles 220 can be prevented from affecting the display effect.

[0083] If the display panel 10 is in the second working mode, the first display module 100 can emit light beams, and the electrode 230 generates a second electric field according to the received second electric signal. Under the action of the second electric field, the display particles 220 are distributed in the area between the adjacent light shielding units 211, as shown in Figure 3 Since the area between the adjacent light shielding units 211 is filled with display particles 220, the light beams emitted by the first display module 100 will not pass through the area between the adjacent light shielding units 211, but will be reflected and absorbed by the display particles 220, thereby ensuring that the display panel 10 can display black and white images through the second display module 200 in a dark environment with the light beams emitted by the first display module 100 as backlight.

[0084] If the display panel 10 is in the third working mode, the first display module is in the off state, and the electrode 230 generates a third electric field according to the received third electric signal. Under the action of the third electric field, the display particles 220 are distributed in the area between the adjacent light shielding units 211, and reflect and absorb external ambient light, thereby ensuring that the display panel 10 can display black and white images through the second display module 200 in a bright environment.

[0085] Optionally, Figure 4 A top view structural schematic diagram of a display panel provided by the present disclosure is shown in Figure 4 The light shielding layer 210 includes a plurality of light shielding strips 212 extending along a first direction and arranged along a second direction, and a plurality of light shielding strips 212 extending along the second direction and arranged along the first direction. The first direction and the second direction are the row direction and the column direction of the pixel array 110, respectively.

[0086] In the plane perpendicular to the extension direction of the light shielding strip 212, the vertical projection of the light shielding strip 212 is at least one of an inverted trapezoidal shape, an inverted triangular shape, and a T shape.

[0087] For example, as shown in Figure 4 The row direction of the pixel array 110 is the X direction, and the column direction is the Y direction, that is, the plurality of sub-pixel units 111a in the pixel array 110 are arrayed in the X direction and the Y direction. The light shielding layer 210 includes a plurality of first light shielding strips 212a and a plurality of second light shielding strips 212b, wherein the first light shielding strips 212a extend along the X direction and are arranged along the Y direction, and the second light shielding strips 212b extend along the Y direction and are arranged along the X direction. The light shielding strip 212 can cover as much as possible the area between the adjacent sub-pixel units 110a, block more external ambient light, and also block more external ambient light reflected in the first display module from being emitted from the first display module, thereby reducing the intensity of the external ambient light emitted from the first display module, and making the display panel have better anti-glare effect.

[0088] In other embodiments, the light shielding layer 210 can include a plurality of light shielding strips extending along the X direction and arranged along the Y direction, or include a plurality of light shielding strips extending along the Y direction and arranged along the X direction, and the embodiments are not limited in this regard.

[0089] The vertical projection of the first light shielding strip 212a on the YZ plane can be an inverted trapezoid, and the vertical projection of the second light shielding strip 212b on the XZ plane can be an inverted trapezoid, as shown in Figure 2 When the first display module displays an image, the light beams reflected by the display particles in the second display module are blocked by the light shielding strips, so as not to affect the display effect of the first display module. In addition, the light shielding strips 212 with an inverted trapezoidal shape can be prepared by using the existing etching process, which is simple to implement and has strong operability.

[0090] In other embodiments, the vertical projection of the first light shielding strip 212a on the YZ plane and the vertical projection of the second light shielding strip 212b on the XZ plane can also be an inverted triangle or a T shape; or can be two of the inverted trapezoid, the inverted triangle and the T shape; or can be the inverted trapezoid, the inverted triangle and the T shape, and the embodiments are not limited in this regard.

[0091] It should be noted that the embodiments only exemplarily show that the row direction of the pixel array 110 is the X direction and the column direction of the pixel array 110 is the Y direction, and are not limited to the row direction and the column direction of the pixel array 110.

[0092] Optionally, Figure 5 Another top view structural schematic diagram of a display panel provided by the present disclosure is shown in Figure 5 The vertical projection of the second surface 211b on the plane where the pixel array 110 is located is located in the region between the adjacent sub-pixel units 111a.

[0093] Exemplarily, as shown in Figure 5 The vertical projection of the second surface 211b on the plane where the pixel array 110 is located is located in the region between the adjacent sub-pixel units 111a, so that the light shielding unit 211 blocks the light beams emitted by the sub-pixel unit 111a as small as possible, and the light shielding unit 211 can avoid blocking the image displayed by the first display module.

[0094] Optionally, Figure 6 Another structural schematic diagram of a display panel provided by the present disclosure is shown in Figure 6 The second display module 200 further includes a transparent substrate 240.

[0095] The transparent substrate 240 is located between the protective layer 120 and the light shielding layer 210.

[0096] The preparation process of the second display module 200 includes: providing a transparent substrate 240, forming the light shielding layer 210 by coating black organic glue on the transparent substrate 240 and etching and curing the organic glue layer, forming the electrodes on the surface opposite to the adjacent light shielding units 211, filling the display particles 220 in the area between the adjacent light shielding units 211, and forming the encapsulation protective layer on the side of the light shielding layer 210 away from the transparent substrate 240 to encapsulate the second display module 200.

[0097] Based on the above embodiment, the prepared second display module 200 can be stacked on the side surface of the first display module 100 close to the protective layer 120, and the transparent substrate 240 in the second display module 200 is opposite to the protective layer 120. The second display module 200 is aligned with the first display module 100, so that the light shielding units 211 in the second display module 200 are opposite to the area between the adjacent sub-pixels 111a in the first display module 100. After alignment, the second display module 200 is fixed on the side of the first display module 100 close to the protective layer 120, and a display panel as shown in Figure 6 is formed.

[0098] In this embodiment, the first display module and the second display module can be prepared respectively, that is, the first display module and the second display module can be prepared at the same time, which can shorten the process time of the display panel and improve the delivery quantity of the display panel.

[0099] In other embodiments, black organic glue can be directly coated on the surface of the protective layer 120 away from the pixel array 110, the organic glue layer is etched and cured to form the light shielding layer 210, and a display panel 10 as shown in Figure 1 is prepared. In this embodiment, the transparent substrate is not required, which can reduce the thickness of the display panel and facilitate the development of the light and thin display panel.

[0100] Based on the above embodiment, the second display module 200 is an electronic paper display screen, and the first display module 100 includes one of a liquid crystal display (LCD), an organic light-emitting diode (OLED) display screen, and a micro light-emitting diode (Micro LED) display screen.

[0101] The second display module 200 is an electronic paper display screen, and energy can be saved when displaying images by using the second display module 200. The first display module 100 can be an LCD, which can display high color gamut color images. Therefore, the display panel 10 can display high color gamut color images in a color display scene, and can display images while saving energy in a black and white image display scene.

[0102] It should be noted that the first display module 100 can also be an OLED display screen or a Micro LED (Micro Light-Emitting Diode) display screen, and the present embodiment does not make specific limitations thereto.

[0103] The present disclosure also provides a control method of a display panel, which is applied to the display panel 10 provided in any of the above embodiments. Figure 7 A flowchart of the control method of the display panel provided by the present disclosure is shown in FIG. 10, which includes the following steps. Figure 7

[0104] S101, determining a working mode of the display panel.

[0105] The working mode of the display panel can be determined based on user selection, for example, if the user needs to display a color image, the first working mode can be selected, if the user needs to display a black-and-white image in a dark environment, the second working mode can be selected, and if the user needs to display a black-and-white image in a bright environment, the third working mode can be selected. The working mode of the display panel can also be determined based on user selection and external environment, for example, if the user needs to display a black-and-white image, the black-and-white image working mode can be selected, and the second working mode or the third working mode can be determined based on the brightness of the external environment.

[0106] S102, in the first working mode, controlling the first display module to display an image.

[0107] If the display panel is in the first working mode, the light beams emitted by the sub-pixel units in the first display module pass through the regions between the adjacent light-shielding units in the second display module and exit from the light exit surface of the second display module. In this way, the color image can be displayed by the first display module.

[0108] S103, in the second working mode, controlling the first display module to provide backlight to the second display module, and the second display module displays an image.

[0109] If the display panel is in the second working mode, the display particles are distributed in the regions between the adjacent light-shielding units, and the light beams emitted by the sub-pixel units in the first display module irradiate the display particles located in the regions between the adjacent light-shielding units. Part of the display particles can absorb the light beams emitted by the sub-pixel units, and part of the display particles can reflect the light beams emitted by the sub-pixel units. In this way, the second display module can display a black-and-white image in a relatively dark environment by using the light beams emitted by the first display module as backlight.

[0110] S104, in the third working mode, controlling the second display module to display an image.

[0111] ​If the display panel is in the third working mode, the first display module is turned off, and the display particles are distributed in the area between adjacent light-shielding units. Some display particles can absorb ambient light, while others can reflect ambient light. In this way, the second display module can display a black and white image under the illumination of ambient light.

[0112] In this embodiment, the operating modes of the display panel are determined. In the first operating mode, the first display module is controlled to display an image. In the second operating mode, the first display module is controlled to provide backlight to the second display module, and the second display module displays an image. In the third operating mode, the second display module is controlled to display an image. The display panel can display color images through the first display module, black and white images through the second display module, and can also display black and white images through the second display module in a dark environment using the light beam emitted by the first display module as backlight. This makes the display panel suitable for various display scenarios, improves the diversity of display, and reduces the energy consumption of the display panel.

[0113] Figure 8 This is a flowchart illustrating another method for controlling a display panel provided in this disclosure. Figure 8 for Figure 7 Based on the illustrated embodiment, a specific description of a possible implementation of S102 is as follows:

[0114] S1021, according to the first working mode instruction, control the electrode to adsorb display particles so that the second display module can transmit light.

[0115] For example, such as Figure 2 As shown, the light-shielding unit 211 includes a first surface 211a, a second surface 211b, and a third surface 211c. The first surface 211a is the surface of the light-shielding unit 211 closest to the protective layer 120. The second surface 211b is opposite to the first surface 211a. The third surface 211c connects the first surface 211a and the second surface 211b, and the third surface 211c is the area directly opposite to adjacent sub-pixel units 111a. The electrode 230 covers the third surface 211c. The electrode 230 is electrically connected to the driving circuit and can generate a corresponding electric field according to the electrical signal provided by the driving circuit to drive the display particles 220 to move.

[0116] If the display panel is in the first working mode, a first working mode command is generated. The driving circuit generates a first electrical signal according to the first working mode command. The electrode generates a first electric field according to the first electrical signal. Under the action of the first electric field, the display particles move towards the area where the electrode is located so that the display particles are adsorbed into the area where the electrode is located. At this time, the area between adjacent light-shielding units is in a light-transmitting state.

[0117] S1022, control the first display module to display an image.

[0118] According to the first working mode instruction, the first display module emits a light beam, and the light beam emitted by the first display module is used to display an image. At this time, the light beam emitted by the first display module can pass through the area between the adjacent light shielding units, that is, the second display module can display a color image.

[0119] In this embodiment, by controlling the electrode to adsorb the display particles according to the first working mode instruction, the second display module is controlled to be transparent; and the first display module is controlled to display an image, so that the display panel can display a color image through the first display module.

[0120] Figure 9 A flowchart of another control method of a display panel provided by the present disclosure is shown in FIG. 10, Figure 9 A flowchart of another control method of a display panel provided by the present disclosure is shown in FIG. 10, Figure 7 Based on the embodiments shown in the foregoing, a specific description of one possible implementation manner of performing S103 is as follows:

[0121] S103', according to the second working mode instruction, control the first display module to emit light, and control the electrode to drive the display particles to display an image.

[0122] If the display panel is in the second working mode, a second working mode instruction is generated, the first display module can emit a light beam, the driving circuit generates a second electric signal according to the second working mode instruction, and the electrode generates a second electric field according to the received second electric signal. Under the action of the second electric field, the display particles are distributed in the area between the adjacent light shielding units. Since the area between the adjacent light shielding units is full of display particles, the light beam emitted by the first display module will not pass through the area between the adjacent light shielding units, but will be reflected and absorbed by the display particles, thereby ensuring that the display panel can display a black and white image through the second display module with the light beam emitted by the first display module as a backlight in a relatively dark environment.

[0123] In this embodiment, by controlling the first display module to emit light according to the second working mode instruction, and controlling the electrode to drive the display particles to display an image, it can be ensured that the display panel can display a black and white image through the second display module with the light beam emitted by the first display module as a backlight in a relatively dark environment.

[0124] Figure 10 A flowchart of another control method of a display panel provided by the present disclosure is shown in FIG. 10, Figure 10 A flowchart of another control method of a display panel provided by the present disclosure is shown in FIG. 10, Figure 9 Based on the embodiments shown in the foregoing, a specific description of one possible implementation manner of performing S103 is as follows:

[0125] S1031, according to the second working mode instruction, generate a brightness value and / or a color gamut value.

[0126] The display panel includes a plurality of second working modes. Different second working mode instructions can be generated in different second working modes. The driving circuit can generate different second electrical signals according to different second working mode instructions. Different brightness values can be generated under the action of different second electrical signals. The user can select a corresponding second working mode according to actual needs. The corresponding second working mode instruction is generated according to the second working mode selected by the user, so as to generate a corresponding brightness value. For example, the brightness value corresponding to the second working mode selected in the weak light environment is L1, the brightness value corresponding to the second working mode selected in the completely dark environment is L2, and L2 < L1, that is, the brighter the environment, the smaller the brightness value generated.

[0127] It should be noted that the present embodiment only exemplarily illustrates that different brightness values are generated according to different second working mode instructions. In other embodiments, different gamut values can also be generated according to different second working mode instructions, or different brightness values and gamut values can also be generated according to different second working mode instructions.

[0128] S1032, controlling the first display module to emit light according to the brightness value and / or the gamut value.

[0129] According to the generated brightness value, the first display module emits a light beam with a corresponding brightness, that is, the brightness value of the light beam emitted by the first display module is approximately equal to the generated brightness value, so that the first display module can emit light beams with different brightness. For example, based on the above embodiment, the brighter the environment, the smaller the brightness of the light beam emitted by the first display module, so that the contrast between the brightness of the first display module and the brightness of the external environment is smaller, thereby achieving the purpose of protecting the user's eyes.

[0130] In other embodiments, the first display module can also emit a light beam with a corresponding color according to the generated gamut value, that is, the gamut value of the light beam emitted by the first display module is approximately equal to the generated gamut value; or the first display module can also emit a light beam with a corresponding brightness and a corresponding color according to the generated brightness value and the gamut value.

[0131] In the present embodiment, by adjusting the brightness value and / or the gamut value of the first display module according to the second working mode instruction, the first display module is controlled to emit light, so that the brightness and color of the light emitted by the first display module can be adjusted according to the actual external environment, the user's display diversity needs are met, and the purpose of protecting the user's eyes is achieved.

[0132] Figure 11 A flowchart of another display panel control method provided by the present disclosure is shown in FIG. 8, Figure 11 A flowchart of another display panel control method provided by the present disclosure is shown in FIG. 8, Figure 7Based on the embodiment shown, a possible implementation of S104 is described as follows:

[0133] S104', according to the third working mode instruction, control the first display module to be closed, and control the electrode to drive the display particle to display an image.

[0134] If the display panel is in the third working mode, the third working mode instruction is generated, the first display module is in the closed state, the driving circuit generates the third electric signal according to the third working mode instruction, and under the action of the third electric field, the display particle is distributed in the area between the adjacent light shielding units, reflecting and absorbing the external environment light, thereby ensuring that the display panel can display black and white images through the second display module in a bright environment.

[0135] In this embodiment, by controlling the first display module to be closed according to the third working mode instruction, and controlling the electrode to drive the display particle to display an image, it can be ensured that the display panel can display black and white images through the second display module in a bright environment.

[0136] The present disclosure also provides a control device of a display panel. Figure 12 A structural schematic diagram of a control device of a display panel provided by the present disclosure is shown as Figure 12 As shown, the control device comprises:

[0137] The determining module 310 is configured to determine the working mode of the display panel.

[0138] The control module 320 is configured to control the first display module to display an image in the first working mode, control the first display module to provide backlight for the second display module in the second working mode, and control the second display module to display an image in the third working mode.

[0139] Optionally, the control module 320 is further configured to control the electrode to adsorb the display particle according to the first working mode instruction, so that the second display module is transparent, and control the first display module to display an image.

[0140] Optionally, the control module 320 is further configured to control the first display module to emit light according to the second working mode instruction, and control the electrode to drive the display particle to display an image.

[0141] Optionally, the control module 320 is further configured to control the first display module to be closed according to the third working mode instruction, and control the electrode to drive the display particle to display an image.

[0142] Optionally, the control module 320 is further configured to generate a brightness value and / or a color gamut value according to the second working mode instruction, and control the first display module to emit light according to the brightness value and / or the color gamut value.

[0143] The device of the embodiment corresponds to the technical solutions used to execute the above-mentioned method embodiments, and has similar implementation principles and technical effects, which will not be described here again.

[0144] The present disclosure also provides an electronic device including the display panel provided in any of the above embodiments.

[0145] The electronic device provided in the embodiment has the beneficial effects of the display panel in the above embodiments, which will not be described here again. In specific implementation, the electronic device can be a mobile phone, a tablet computer, a notebook computer, or can be a television, a display area, a learning machine, a digital photo frame, a navigator, a smart wearable electronic device, or any product or component having a display function, which is not specially limited in the embodiment.

[0146] The present disclosure also provides a computer-readable storage medium having a computer program stored thereon, and the computer program is executed by a processor to implement the steps of the method provided in the above method embodiments.

[0147] The present disclosure also provides a computer program product, which, when executed on a computer, causes the computer to perform the steps of the method provided in the above method embodiments.

[0148] It should be noted that, in this document, relational terms such as“first” and“second”, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase“comprising a” does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0149] The foregoing is merely illustrative of the various implementations of the present disclosure and the general principles thereof. Numerous modifications can be made to these illustrations, and equivalents can be substituted therefor, without departing from the scope of the present disclosure. The specific embodiments commensurate with the specific application are intended to be illustrative only and not limiting of the scope of the application as set forth in the following claims.

Claims

1. A display panel, characterized by, The display panel comprises: a first display module and a second display module stacked on the light exit side of the first display module; the first display module comprises a pixel array and a protective layer located on the side of the pixel array close to the second display module, the pixel array comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a plurality of sub-pixel units; the second display module comprises a light shielding layer and display particles, the light shielding layer is located on the side of the protective layer away from the pixel array; the light shielding layer comprises a plurality of light shielding units, the light shielding units are opposite the regions between adjacent sub-pixel units, and the display particles are located in the regions between adjacent light shielding units, the display particles comprise white display particles and black display particles; the first display module and the second display module are configured to display an image.

2. The display panel of claim 1, wherein the first display module is configured to display an image in a first working mode and provide backlight for the second display module in a second working mode; the second display module is configured to display an image in the second working mode and a third working mode.

3. The display panel of claim 2, wherein, the light shielding unit comprises a first surface, a second surface and a third surface, wherein the first surface is the surface of the light shielding unit on the side close to the protective layer, the second surface is opposite to the first surface, and the third surface connects the first surface and the second surface and is opposite the region between the adjacent sub-pixel units; the vertical projection of the first surface on the protective layer is located within the vertical projection of the second surface on the protective layer; the second display module further comprises an electrode covering the third surface; the electrode is configured to adsorb the display particles to make the second display module transparent in the first working mode, and drive the display particles to display an image in the second working mode and the third working mode.

4. The display panel of any of claims 1-3, wherein, the light shielding layer comprises a plurality of light shielding strips extending along a first direction and arranged along a second direction, and a plurality of light shielding strips extending along the second direction and arranged along the first direction, the first direction and the second direction being the row direction and the column direction of the pixel array, respectively; in a plane perpendicular to the extension direction of the light shielding strips, the vertical projection of the light shielding strips is at least one of an inverted trapezoidal shape, an inverted triangular shape and a T shape.

5. The display panel of claim 3, wherein, the vertical projection of the second surface on the plane where the pixel array is located is located in the region between the adjacent sub-pixel units.

6. The display panel of any of claims 1-3, wherein, the second display module further comprises a transparent substrate; the transparent substrate is located between the protective layer and the light shielding layer.

7. The display panel of any of claims 1-3, wherein, the second display module is an electronic paper display screen, and the first display module comprises one of a liquid crystal display (LCD) screen, an organic light-emitting diode (OLED) display screen and a micro light-emitting diode (Micro LED) display screen.

8. A control method of a display panel, characterized by, application to the display panel of any one of claims 1-7; the method comprises: determining the working mode of the display panel; in the first working mode, controlling the first display module to display an image; In the second working mode, the first display module is controlled to provide backlight for the second display module, and the second display module displays an image. In the third working mode, the second display module is controlled to display an image.

9. The method of claim 8, wherein, The controlling the first display module to display an image in the first working mode comprises: controlling the electrode to adsorb the display particles so that the second display module is transparent; controlling the first display module to display an image.

10. The method of claim 8, wherein, The controlling the first display module to provide backlight for the second display module in the second working mode, and the second display module displays an image comprises: controlling the first display module to emit light according to the second working mode instruction, and controlling the electrode to drive the display particles to display an image.

11. The method of claim 8, wherein, The controlling the second display module to display an image in the third working mode comprises: controlling the first display module to be turned off according to the third working mode instruction, and controlling the electrode to drive the display particles to display an image.

12. The method of claim 10, wherein, The controlling the first display module to emit light according to the second working mode instruction comprises: generating a luminance value and / or a color gamut value according to the second working mode instruction; controlling the first display module to emit light according to the luminance value and / or the color gamut value.

13. A control device of a display panel, characterized by comprising: The display panel is applied to any one of claims 1-7. The control device comprises: a determination module configured to determine a working mode of the display panel; a control module configured to control the first display module to display an image in the first working mode, control the first display module to provide backlight for the second display module in the second working mode, and control the second display module to display an image in the third working mode.

14. An electronic device, comprising: The display panel is applied to any one of claims 1-7.

15. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by a processor to implement the steps of the method of any one of claims 8-12. The computer program is executed by a processor to implement the steps of the method of any one of claims 8-12.

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