Display panel and display device

Abstract

The embodiment of the present application provides a display panel with better display effect and safety. The display panel includes a plurality of sub-pixels arranged on a substrate, and the plurality of sub-pixels are used to emit light of different colors to perform image display. The display panel also includes a plurality of dimming parts, the number of dimming parts is less than the number of sub-pixels, and a dimming part covers the surface of a sub-pixel in the light emitting direction. When the display panel is in a first display mode, the sub-pixel provided with the dimming part emits light through the dimming part to display an image, and when the display panel is in a second display mode, the dimming part adjusts the direction of the light emitted by the sub-pixel to control the overlap of the light of the sub-pixel with the adjacent sub-pixel in a preset direction. The embodiment of the present application also provides a display device including the aforementioned display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) display devices have many advantages such as self-luminescence, low driving current, high luminous efficiency, short response time, high clarity and contrast, nearly 180° viewing angle, wide operating temperature range, flexible display and large-area full-color display, etc., and are considered by the industry to be the display device with the most development potential.

[0003] At present, in daily office work, more and more users have greater demands for the brightness of light on display screens in different directions. However, when current display screens adjust the direction of pixel light, the pixel aperture ratio is usually reduced, thereby reducing the display effect. Therefore, how to ensure the pixel aperture ratio while adjusting the pixel light output direction to improve the image display safety of the display panel is an urgent problem that needs to be solved. Summary of the invention

[0004] In view of the aforementioned technical problems, the present application provides a display panel and a display device with better safety and display effect.

[0005] An embodiment of the present application discloses a display panel, comprising a plurality of sub-pixels arranged on a substrate, wherein the plurality of sub-pixels are used to emit light of different colors to display an image; characterized in that the display panel also includes a plurality of dimming sections, wherein the number of the dimming sections is less than the number of the sub-pixels, and one of the dimming sections covers a surface of a sub-pixel in a light emitting direction, and when the display panel is in a first display mode, the sub-pixel provided with the dimming section emits light through the dimming section to display an image, and when the display panel is in a second display mode, the dimming section adjusts the direction of the light emitted by the sub-pixel to control the light overlap between the sub-pixel and an adjacent sub-pixel in a preset direction.

[0006] In one embodiment, the plurality of sub-pixels include a first color sub-pixel emitting a first color light, a second color sub-pixel emitting a second color light, and a third color sub-pixel emitting a third color light, and at least one of the first color sub-pixel, at least one of the second color sub-pixel, and at least one of the third color sub-pixel are adjacently arranged and constitute a pixel unit, and in each of the pixel units, the dimming part is arranged corresponding to the first color sub-pixel, the second color sub-pixel, and / or the third color sub-pixel, wherein an area of ​​an orthographic projection of the dimming part on the surface of the substrate is smaller than an area of ​​an orthographic projection of the sub-pixel on the surface of the substrate, and the orthographic projection of the dimming part on the surface of the substrate overlaps with the orthographic projection of the sub-pixel on the surface of the substrate.

[0007] In one embodiment, the sub-pixels corresponding to the dimming unit in each of the pixel units emit light of the same color.

[0008] In one embodiment, the sub-pixels corresponding to the dimming parts in any two adjacent pixel units emit light of different colors.

[0009] In one embodiment, the dimming unit is correspondingly disposed to at least two sub-pixels in each of the pixel units.

[0010] In one embodiment, the plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel, a third color sub-pixel and a dimming sub-pixel, and at least one of the first color sub-pixel, at least one of the second color sub-pixel, at least one of the third color sub-pixel and at least one of the dimming sub-pixel are arranged adjacent to each other and constitute a pixel unit. In each of the pixel units, the dimming section is arranged corresponding to the dimming sub-pixel, wherein the area of ​​the orthographic projection of the dimming section on the substrate surface is equal to the area of ​​the orthographic projection of the dimming sub-pixel on the substrate surface, and the orthographic projection of the dimming section on the substrate surface overlaps with the orthographic projection of the dimming sub-pixel on the substrate surface.

[0011] In one embodiment, the surface of the substrate includes a driving circuit layer, a light-emitting element layer and an insulating packaging layer which are stacked in sequence, the light-emitting element layer corresponds to a plurality of sub-pixels including a plurality of light-emitting elements arranged in a matrix, the light-emitting elements include a first display electrode, a light-emitting layer and a second display electrode which are stacked, and the dimming unit is arranged on the surface of the insulating packaging layer and directly opposite to the light-emitting elements.

[0012] In one embodiment, the surface of the substrate includes a driving circuit layer, a light-emitting element layer and an insulating packaging layer which are stacked in sequence, the light-emitting element layer corresponding to the plurality of sub-pixels includes a plurality of light-emitting elements arranged in a matrix, the light-emitting elements include a first display electrode, a light-emitting layer and a second display electrode which are stacked, and any adjacent light-emitting elements also include a pixel definition layer; the dimming unit is arranged in the insulating packaging layer, connected to the pixel definition layer and correspondingly covers all light emitting directions of the dimming sub-pixels.

[0013] In one embodiment, the dimming section is in the shape of a curved shell that is convex away from the light-emitting element, and the inner and outer edges of the dimming section are connected to the surface of the pixel definition layer, including a first electrode, a color-changing layer, a second electrode and a third electrode, the color-changing layer is sandwiched between the first electrode, the second electrode and the third electrode, the first electrode and the second electrode are loaded with a voltage to form an electric field for adjusting the transmittance of the color-changing layer, and the first electrode and the third electrode are loaded with a voltage to form an electric field for adjusting the transmittance of the color-changing layer, wherein the first electrode is arranged on the inner surface adjacent to the light-emitting element, the second electrode and the second electrode are arranged on the outer surface away from the light-emitting element, the second electrode and the second electrode are arranged in sequence in a direction away from the light-emitting element in a manner of being spaced by a preset distance, and the second electrode and the third electrode are both ring-shaped. The display panel is in the first display mode, the first electrode, the second electrode and the third electrode are all loaded with a preset voltage, and the dimming section is in a transparent state to control the light emitted by the light-emitting element to be emitted from the dimming section. The display mode is in the second display mode, and voltages are selectively applied to the first electrode, the second electrode, and the third electrode to adjust the light emitting direction and the light emitting angle of the dimming sub-pixel.

[0014] In one embodiment, the dimming portion is in the shape of a curved shell convex in a direction away from the light-emitting element, and the inner surface edge and the outer surface edge of the dimming portion are both connected to the surface of the pixel definition layer, the inner surface of the dimming portion includes a first electrode, and the outer surface of the dimming portion includes a second electrode to an nth electrode, wherein n is an integer greater than 2, and the color-changing layer is sandwiched between the first electrode and the second electrode to the nth electrode, and a voltage is applied to the first electrode and the second electrode to the nth electrode to form an electric field for adjusting the transmittance of the color-changing layer, wherein, starting from the pixel definition layer adjacent to the pixel definition layer, the second electrode to the nth electrode are sequentially arranged in a manner of being spaced by a preset distance in a direction away from the light-emitting element, and the second electrode to the nth electrode are each in a ring shape.

[0015] In one embodiment, the display panel is in the first display mode, the first electrode, the second electrode and the third electrode are all loaded with a preset voltage, the dimming portion is in a transparent state to control the light emitted by the light-emitting element to be emitted from the dimming portion; the display mode is in the second display mode, the first electrode is loaded with a preset voltage, the second electrode to the nth electrode are selectively loaded with a voltage, and a slit grating is formed between the first electrode and the second electrode to the nth electrode.

[0016] An embodiment of the present application further discloses a display device, comprising a power supply module and the aforementioned display panel, wherein the power supply module is used to provide driving power for the display panel to perform image display.

[0017] Compared with the prior art, the dimming unit can flexibly adjust the angle of the light emitted by the corresponding sub-pixel, so that the display panel can switch between different display modes. In the first display mode, the sub-pixel provided with the dimming unit emits light through the dimming unit to display an image. When the display panel is in the second display mode, the dimming unit adjusts the direction of the light emitted by the sub-pixel to control the overlap of light between the sub-pixel and the adjacent sub-pixel in a preset direction, so that the display panel displays different images at the front viewing angle and the side viewing angle, thereby ensuring the accuracy and aperture ratio of the front viewing angle image display. At the same time, the image displayed within the side viewing angle range produces color deviation due to the color mixing of the light, thereby preventing image information from being leaked within the side viewing angle range, and ensuring the security of image display on the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a display device provided in one embodiment of the present application;

[0020] Figure 2 for Figure 1 The cross-sectional structure diagram of the display panel along II is shown;

[0021] Figure 3 for Figure 2 A schematic diagram of the planar layout structure of the display panel shown;

[0022] Figure 4 In the first embodiment of this application, Figure 3 A top view of a portion of pixel units in the display panel shown;

[0023] Figure 5 for Figure 4 An equivalent circuit diagram of any sub-pixel in the display panel shown;

[0024] Figure 6 for Figure 3 A schematic diagram of the cross-sectional structure of a pixel unit in the display panel along line II-II is shown;

[0025] Figure 7 for Figure 6 The light distribution diagram when the display panel is in the first display mode;

[0026] Figure 8 for Figure 6 The light distribution diagram when the display panel is in the second display mode;

[0027] Figure 9-13 For the present application, the following changes are made in the embodiment: Figure 3 A top view of a portion of pixel units in the display panel shown;

[0028] Fig.14 In the second embodiment of this application, Figure 3 A top view of a portion of pixel units in the display panel shown;

[0029] Fig.15 for Fig.14 A schematic diagram of the cross-sectional structure of a pixel unit in the display panel along line II-II is shown;

[0030] Fig.16 for Fig.15 Light distribution diagram when the display panel is in the first display mode;

[0031] Fig.17 for Fig.15 A light path diagram when the display panel is in the second display mode;

[0032] Fig.18 In the third embodiment of the present application, Fig.14 A schematic diagram of the cross-sectional structure of a pixel unit in the display panel along line II-II is shown;

[0033] Fig.19 for Fig.18 A top view of the dimming unit shown;

[0034] Figure 20-22 for Fig.18 The light output schematic diagram of the dimming unit is shown;

[0035] Fig.23 In the fourth embodiment of the present application, Fig.14 A schematic diagram of the cross-sectional structure of a pixel unit in the display panel along line II-II is shown;

[0036] Fig.24 for Fig.23 An enlarged schematic diagram of the structure along line V is shown;

[0037] Fig.25 In the fifth embodiment of the present application, Fig.23 An enlarged schematic diagram of the structure along line V is shown.

[0038] Description of reference numerals:

[0039] Display device-100; display panel-10; power module-20; display area-10a; non-display area-10b; array substrate-10c; opposite substrate-10d; display medium layer-10e; m data lines-D1~Dm; n scanning lines-G1~Gn; first direction-F1; second direction-F2; timing control circuit-11; data driving circuit-12; scanning driving circuit-13; pixel unit-P; i-th scanning line-Gi; j-th data line-Dj; driving transistor-T1; control transistor-T2; storage capacitor C1; power supply terminal-VDD; low voltage terminal-VSS; light-emitting element-OLED; node-N1; substrate- 110; driving circuit layer-120; light-emitting element layer-130; first display electrode-131; second display electrode-132; light-emitting layer 133; pixel definition layer 134; insulating packaging layer-140; dimming unit LA; red sub-pixel-R; green sub-pixel-G; blue sub-pixel-B; pixel unit-P, Pij, Pij+1, Pij+2, Pij+3, Pij+4; dimming sub-pixel-Pa; first electrode-E1; second electrode-E2; third electrode-E3; fourth electrode-E4; nth electrode-En; annular electrode-E1c; first adjustment viewing angle-EA1; second adjustment viewing angle-EA2; third adjustment viewing angle-EA3. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0041] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0042] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification, claims, and drawings of the present application are used to distinguish different objects, rather than to describe a specific order.

[0043] In addition, the terms "include", "may include", "contain", or "may include" used in the present application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "include" or "contain" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions. In addition, when describing the embodiments of the present application, "may" is used to indicate "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0045] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of a display device 100 provided in this embodiment. Figure 1 As shown, the display device 100 includes a display panel 10 and a power module 20 . The power module 20 is used to provide a power voltage for driving the display panel 10 to perform image display.

[0046] Please also read Figure 1-Figure 2 , Figure 2 for Figure 1 The cross-sectional structure diagram of the display panel 10 along II is shown. Figure 2 As shown, the display panel 10 includes an image display area 10a and a non-display area 10b. The display area 10a is used to perform image display, and the non-display area 10b is arranged around the display area 10a to arrange other auxiliary components or modules. Specifically, the display panel 10 includes an array substrate 10c and an opposite substrate 10d, and a display medium layer 10e sandwiched between the array substrate 10c and the opposite substrate 10d. In this embodiment, the display medium in the display medium layer 10e is an organic light-emitting material.

[0047] See also Figure 3 , Figure 3 for Figure 2 A schematic diagram of the planar layout structure of the display panel 10 is shown.

[0048] like Figure 3 As shown, the display area 10 a of the display panel 10 includes a plurality of m*n pixel units P arranged in a matrix, m data lines D1 -Dm, and n scan lines G1 -Gn, where m and n are natural numbers greater than 1.

[0049] The n scan lines G1-Gn extend along the first direction F1 and are insulated and arranged in parallel along the second direction F2. The m data lines D1-Dm extend along the second direction F2 and are insulated and arranged in parallel along the first direction F1. The first direction F1 is perpendicular to the second direction F2.

[0050] Corresponding to the non-display area 10 b of the display panel 10 , the display device 100 further includes a timing control circuit 11 for driving the pixel unit to display an image, a data driving circuit 12 , and a scan driving circuit 13 disposed in the display panel 10 .

[0051] Among them, the timing control circuit 11 is electrically connected to the data driving circuit 12 and the scan driving circuit 13, and is used to control the working timing of the data driving circuit 12 and the scan driving circuit 13, that is, outputting corresponding timing control signals to the data driving circuit 12 to the scan driving circuit 13 to control when to output corresponding scan signals and data signals.

[0052] The data driving circuit 12 is electrically connected to the m data lines D1 -Dm, and is used to transmit the data signals (Data) to be displayed to the plurality of pixel units P in the form of data voltages through the m data lines D1 -Dm.

[0053] The scan driving circuit 13 is used to be electrically connected to the n scan lines G1-Gn, and is used to output scan signals through the n scan lines G1-Gn for controlling when the pixel unit P receives the data signal. The scan driving circuit 13 outputs scan signals from the n scan lines G1-Gn in sequence according to the scan period.

[0054] See also Figure 4 , which is as in the first embodiment of the present application Figure 3 FIG. 1 is a top view of a portion of pixel units in the display panel 10. Figure 4 As shown, each pixel unit P includes a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B.

[0055] A dimming unit LA is disposed on the surface of a sub-pixel portion in each pixel unit P. The dimming unit LA is used to adjust the direction and brightness of the light emitted from the sub-pixel, thereby adjusting the direction of the light emitted from the entire display panel 10 .

[0056] For example, in the pixel unit Pij, some blue sub-pixels B are provided with a dimming unit LA; in the pixel unit Pij+1, some red sub-pixels R are provided with a dimming unit LA; in the pixel unit Pij+2, some red sub-pixels R are provided with a dimming unit LA; in the pixel unit Pij+3, some green sub-pixels G are provided with a dimming unit LA; in the pixel unit Pij+4, some red sub-pixels R are provided with a dimming unit LA. Wherein, i and j are integers less than or equal to m and n, respectively. It can be understood that the other pixel units P are also the same, and this embodiment will not be repeated.

[0057] In the present embodiment, at least one sub-pixel in each pixel unit is partially covered by the dimming unit LA. When the display panel 10 normally displays the image in the first display mode, the dimming unit LA is in a transparent state, and the light emitted by each sub-pixel normally displays the image. When the display panel 10 is in the second display mode, the dimming unit LA can adjust the number and direction of the light emitted by the covered sub-pixels, so that the brightness of the mixed light image of the sub-pixel light emitted by the display panel 10 at different angles is different, thereby preventing the brightness and clarity of the image displayed at some angles from being different from those at other angles, thereby preventing the image information displayed by the display panel 10 from being unexpectedly leaked, and improving the security of the image display of the display panel 10.

[0058] In this embodiment, Figure 4As shown, a dimming unit LA is randomly set in a sub-pixel in each pixel unit P, that is, the sub-pixels in which the dimming unit LA is set in each pixel unit P are not regular but randomly set. In addition, it should be noted that in each pixel unit P, the arrangement direction and arrangement order of the red sub-pixel R, the blue sub-pixel B and the green sub-pixel G can be adjusted according to actual needs and are not limited to Figure 4 The arrangement layout shown in the figure, and the number of sub-pixels in the pixel unit P can also be adjusted according to actual needs and Figure 5 The figure is limited, for example, the pixel unit P can also be a white sub-pixel W.

[0059] See also Figure 5 , Figure 5 for Figure 4 The equivalent circuit diagram of any sub-pixel in the display panel 10 is shown in FIG. Figure 5 As shown, each sub-pixel includes a driving transistor T1, a control transistor T2, a storage capacitor C1 and a light-emitting element OLED. The driving transistor T1, the control transistor T2 and the storage capacitor C1 constitute a driving circuit for driving the light-emitting element OLED to emit light. The gate of the control transistor T2 is connected to the i-th scan line Gi, the source of the control transistor T2 is connected to the j-th data line Dj, and the drain of the control transistor T2 is connected to the node N1, wherein the storage capacitor C1 is electrically connected to the node N1 and the power supply terminal VDD. The control transistor T2 is used to receive a data signal from the j-th data line Dj under the control of the i-th scan signal and transmit it to the storage capacitor C1 for storage.

[0060] The gate of the driving transistor T1 is connected to the node N1, the source of the driving transistor T1 is connected to the power supply terminal VDD, and the drain of the driving transistor T1 is connected to the anode (not shown) of the light-emitting element OLED, and is used to be turned on under the control of the data signal stored in the storage capacitor C1 to control the driving current provided by the power supply terminal VDD to be transmitted to the light-emitting element OLED to drive the light-emitting element OLED to emit light.

[0061] It can be understood that in the present embodiment, the driving circuit in each pixel unit Pi is a 2T1C driving architecture. The number of components and the connection method of the driving circuit can be adjusted according to actual needs, such as 3T1C, 5T1C, 6T1C, 7T1C, 7T2C and other different driving architectures, and are not limited to the aforementioned implementation methods.

[0062] like Figure 6 As shown, Figure 3 The cross-sectional structure diagram of the pixel unit Pij in the display panel 10 along the II-II line is shown.

[0063] The display panel 10 includes a substrate 110, a driving circuit layer 120, a light emitting element layer 130 and an insulating packaging layer 140 which are stacked in sequence from bottom to top. The substrate 110 may be made of glass, and the driving circuit layer 120 may be arranged as follows: Figure 5 The various components of the driving circuit in the sub-pixel are shown.

[0064] The light emitting element layer 130 includes a plurality of light emitting elements OLED arranged in a matrix, wherein each light emitting element OLED includes a first display electrode 131, a light emitting layer 133 and a second display electrode 132 stacked in sequence on the surface of the driving circuit layer 120. In this embodiment, the light emitting layer 133 is an organic electroluminescent material. In this embodiment, one light emitting element OLED corresponds to one Figure 4 The sub-pixels shown, for example, one light-emitting element OLED corresponds to one red sub-pixel R, one light-emitting element OLED corresponds to one blue sub-pixel B, and one light-emitting element OLED corresponds to one green sub-pixel G.

[0065] The two adjacent light-emitting elements OLED also include a pixel definition layer 134. It can be understood that the pixel definition layer 134 is used to insulate and separate the light-emitting elements OLED from each other to form sub-pixels that emit light of different colors. That is, the pixel definition layer 134 is used to divide each sub-pixel, and is also used to accommodate the organic light-emitting material of the light-emitting layer 133. Specifically, the pixel definition layer 134 divides the display area of ​​the display panel 10 into a plurality of array-arranged pixel units P and sub-pixels R, G, and B. Among them, the height (thickness) of the pixel definition layer 134 relative to the driving circuit layer 120 is greater than the height (thickness) of the light-emitting element OLED relative to the driving circuit layer 120, thereby preventing the light emitted by the adjacent light-emitting elements OLED from mixing, and also preventing the leakage of current between the second display electrodes 132 of the adjacent light-emitting elements OLED and the occurrence of mixed light color deviation.

[0066] The insulating encapsulation layer 140 covers the surface of the light-emitting element layer 130. In the present embodiment, a dimming unit LA is also provided on a portion of the surface of the insulating encapsulation layer 140. In the present embodiment, the dimming unit LA is provided on the surface of the blue sub-pixel B. The area of ​​the orthographic projection of the dimming unit LA on the surface of the substrate 110 is smaller than the area of ​​the orthographic projection of the light-emitting element OLED in the blue sub-pixel B on the surface of the substrate 110, and the orthographic projection of the dimming unit LA on the surface of the substrate 110 overlaps with the orthographic projection of the light-emitting element OLED on the surface of the substrate 110. The transmittance of the dimming unit LA can be adjusted as required. When the dimming unit LA is in a transparent state, the light-emitting element OLED is completely emitted outside the display panel 10; when the dimming unit LA is in a non-transparent state, the light of the light-emitting element OLED that is blocked will be blocked by the dimming unit LA and cannot be emitted outside the display panel 10.

[0067] In this embodiment, the dimming unit LA may be a structure including a first electrode (not shown), a color-changing layer (not shown) and a second electrode (not shown), wherein the color-changing layer material may be an electroluminescent material, and when the intensity of the electric field formed by the voltage applied to the first electrode and the second electrode is adjusted, the transparency of the electroluminescent material can be adjusted, thereby adjusting the intensity of the light passing through the entire dimming unit LA. The first electrode and the second electrode are transparent electrodes. The first electrode and the second electrode may be connected to the timing control circuit 11, the data driving circuit 12 or the scanning driving circuit 13 through corresponding signal lines, or a control circuit independent of the aforementioned driving circuit, so as to selectively receive or not receive voltage from the aforementioned circuit.

[0068] See also Figure 7 , which is Figure 6 The light distribution diagram when the display panel 10 is in the first display mode is shown. The electrodes in the dimming section LA receive voltage and form an electric field to control the color-changing layer to be transparent, thereby making the dimming section LA transparent as a whole, and all the light emitted by the light-emitting element OLED in the blue sub-pixel B provided with the dimming section LA passes through the dimming section LA, so that the blue sub-pixel B provided with the dimming section LA can emit the light of the light-emitting element OLED corresponding to the data signal, so that the display panel 10 can display a consistent image at all angles.

[0069] See also Figure 8 , which is Figure 6 The light distribution diagram when the display panel 10 is in the second display mode is shown. Figure 8 As shown, when the display panel 10 is in the second display mode, the dimming unit LA can adjust the number and direction of the sub-pixel emitted light covered, so that the mixed light image brightness of the sub-pixel emitted light viewed at different angles of the display panel 10 is different, thereby preventing the brightness and clarity of the image displayed at some angles from being different from those at other angles, thereby preventing the image information displayed by the display panel 10 from being leaked unexpectedly, and improving the security of the image display of the display panel 10.

[0070] Specifically, in the blue sub-pixel B provided with the dimming part LA, the light along the direction perpendicular to the display panel 10 (main viewing angle) is blocked by the dimming part LA, so the dimming part LA will not interfere with the picture effect within the main viewing angle. However, part of the light emitted by the light-emitting element OLED will be emitted obliquely from the edge position of the dimming part LA (side viewing angle) and mixed with the light emitted from the part of the blue sub-pixel B where the dimming part LA is not provided, thereby causing the image color of the display panel 10 to be shifted within the side viewing angle range, and thus the picture displayed within the side viewing angle range cannot be clearly displayed and viewed due to the color shift.

[0071] In the present embodiment, corresponding to the sub-pixel provided with the dimming unit LA, when the display panel 10 is in the second display mode, the timing control circuit 11 will increase the adjustment amount in the corresponding data signal loaded to the sub-pixel, so that the brightness of the sub-pixel provided with the dimming unit increases accordingly, thereby compensating for the light brightness lost due to the occlusion of the dimming unit LA, and at the same time, enhancing the light intensity within the side viewing angle range, making the color mixing effect within the side viewing angle range stronger, resulting in enhanced image color deviation within the side viewing angle range, further reducing the risk of image information leakage in the side viewing angle range, and improving the security of image information in the side viewing angle range.

[0072] It can be understood that when the display panel 10 is in the first display mode, the sub-pixel Pi where the dimming part LA is located is in a fully transparent state, and the brightness and quantity of light in the side viewing angle and the main viewing angle are the same. Then, the image color displayed by the side viewing angle and the main viewing angle is the same, that is, the dimming part LA will not interfere with the image display in the side viewing area, and the same clear image information can be viewed in the side viewing angle range and the main viewing angle range.

[0073] In this embodiment, the dimming unit LA is directly arranged on a part of the surface of the sub-pixel that normally displays the image. The dimming unit LA can flexibly adjust the angle of the light emitted by the corresponding sub-pixel, so that the display panel 10 can switch between different display modes. In the first display mode, the sub-pixel provided with the dimming unit LA emits light through the dimming unit LA to display the image. When the display panel 10 is in the second display mode, the dimming unit LA adjusts the direction of the light emitted by the sub-pixel to control the overlap of the light of the sub-pixel and the adjacent sub-pixel in a preset direction, so that the display panel 10 displays different images at the front viewing angle and the side viewing angle, ensuring the accuracy and aperture ratio of the image display at the front viewing angle, and at the same time, the image displayed in the side viewing angle range is color-shifted due to the color mixing of the light, preventing the leakage of image information in the side viewing angle range, and ensuring the security of the image information displayed by the display panel 10.

[0074] Alternatively, the number and position of the sub-pixels provided with the light modulating unit LA in each pixel unit P may also be adjusted. Figure 9-13 , which is a modification of the embodiment of the present application as Figure 3 FIG. 1 is a top view of a portion of pixel units in a display panel. Figure 9-11 As shown, a dimming unit LA may be provided on a partial surface of a red sub-pixel R, a blue sub-pixel B or a green sub-pixel G in each pixel unit P. As a result, the image in the corresponding side viewing angle range is biased towards red, blue or green due to the addition of mixed colors of red light, blue light or green light.

[0075] In one embodiment, if Fig.12As shown, the sub-pixels of the dimming section LA in any two adjacent pixel units P are different, and thus the image in the corresponding side viewing angle range can evenly increase the color mixing of red light, blue light and green light, making the color mixing of the image in the corresponding side viewing angle range more uniform, thereby making the image in the side viewing angle range more blurred.

[0076] In one embodiment, if Fig.13 As shown, each pixel unit P includes two sub-pixels to set the dimming unit LA. As a result, the range of light brightness that can be adjusted in each pixel unit is increased, and the ability to adjust the color deviation of the image displayed in the corresponding side viewing angle range is also increased accordingly, thereby effectively increasing the prevention of information leakage.

[0077] See also Fig.14 , which is as in the second embodiment of the present application Figure 3 FIG. 1 is a top view of a portion of pixel units in the display panel 10. Fig.14 As shown, each pixel unit includes a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B and a dimming sub-pixel Pa.

[0078] The dimming sub-pixel Pa is covered by the dimming unit LA. When the display panel 10 is in the first display mode in which the image is normally displayed, the dimming unit LA is in a transparent state, and the light emitted by the dimming sub-pixel Pa and other sub-pixels normally displays the image. When the display panel 10 is in the second display mode, the dimming unit LA can adjust the number and direction of the light emitted by the dimming sub-pixel Pa, so that the brightness of the mixed light image of the sub-pixel light emitted by the display panel 10 at different angles is different, thereby preventing the brightness and clarity of the image displayed at some angles from being different from other angles, thereby preventing the image information displayed by the display panel 10 from being leaked unexpectedly, and improving the security of the image display of the display panel 10.

[0079] like Fig.15 As shown, Fig.14 The cross-sectional structure diagram of the pixel unit in the display panel 10 along the II-II line is shown.

[0080] The display panel 10 includes a substrate 110, a driving circuit layer 120, a light emitting element layer 130 and an insulating packaging layer 140 which are stacked in sequence from bottom to top. The substrate 110 may be made of glass, and the driving circuit layer 120 may be arranged as follows: Figure 5 The various components of the driving circuit in the sub-pixel are shown.

[0081] The light emitting element layer 130 includes a plurality of light emitting elements OLED arranged in a matrix, wherein each light emitting element OLED includes a first display electrode 131 , a light emitting layer 133 and a second display electrode 132 which are sequentially stacked on the surface of the driving circuit layer 120 .

[0082] The two adjacent light-emitting elements OLED also include a pixel definition layer 134. It can be understood that the pixel definition layer 134 is used to insulate and separate the light-emitting elements OLED from each other to form sub-pixels that emit light of different colors. That is, the pixel definition layer 134 is used to divide each sub-pixel, and is also used to accommodate the organic light-emitting material of the light-emitting layer 133. Specifically, the pixel definition layer 134 divides the display area of ​​the display panel 10 into a plurality of array-arranged pixel units P and sub-pixels. Among them, the height (thickness) of the pixel definition layer 134 relative to the driving circuit layer 120 is greater than the height (thickness) of the light-emitting element OLED relative to the driving circuit layer 120, thereby preventing the light emitted by the adjacent light-emitting elements OLED from mixing, and also preventing the leakage of current between the second display electrodes 132 of the adjacent light-emitting elements OLED and the occurrence of mixed light color deviation.

[0083] The insulating encapsulation layer 140 covers the surface of the light-emitting element layer 130, and a dimming unit LA is also provided on the surface of the insulating encapsulation layer 140 corresponding to the position of the dimming sub-pixel Pa. Among them, corresponding to the dimming sub-pixel Pa, the area of ​​the orthographic projection of the dimming unit LA on the surface of the substrate 110 is equal to the area of ​​the orthographic projection of the light-emitting element OLED on the surface of the substrate 110, and the orthographic projection of the dimming unit LA on the surface of the substrate 110 overlaps with the orthographic projection of the light-emitting element OLED on the surface of the substrate 110. The transmittance of the dimming unit LA can be adjusted according to demand. When the dimming unit LA is in a transparent state, the light-emitting element OLED is completely emitted outside the display panel 10; when the dimming unit LA is in a non-transparent state, the light of the light-emitting element OLED that is blocked will be blocked by the dimming unit LA and cannot be emitted outside the display panel 10.

[0084] See also Fig.16 , which is Fig.15 Light distribution diagram when the display panel 10 is in the first display mode. The dimming unit LA is in a transparent state, and the light emitted by the light-emitting element OLED in the red sub-pixel R, the blue sub-pixel B, the green sub-pixel G and the dimming sub-pixel Pa in the pixel unit Pij all passes through the dimming unit LA, so that the dimming sub-pixel Pa provided with the dimming unit LA can emit the light of the light-emitting element OLED corresponding to the data signal, so that the display panel 10 can display a consistent image at all angles.

[0085] See also Fig.17 , which is Fig.15 The light path diagram when the display panel 10 is in the second display mode is shown. Fig.17As shown, when the display panel 10 is in the second display mode, the dimming unit LA can adjust the number and direction of the emitted light of the covered dimming sub-image Pa, so that the mixed light image brightness of the sub-pixel emitted light viewed at different angles of the display panel 10 is different, thereby preventing the brightness and clarity of the image displayed at some angles from being different from those at other angles, thereby preventing the image information displayed by the display panel 10 from being leaked unexpectedly, and improving the security of the image display of the display panel 10.

[0086] Specifically, in the dimming sub-pixel Pa provided with the dimming part LA, the light along the direction perpendicular to the display panel 10 is blocked by the dimming part LA, so the dimming part LA will not interfere with the picture effect within the narrow viewing angle range, but part of the light emitted by the light-emitting element OLED will be emitted at an angle from the edge of the dimming part LA, and will be mixed with the light emitted by the blue sub-pixel B and the green sub-pixel G of the adjacent dimming sub-pixel Pa, that is, in the wide viewing angle range, there is cross-color mixing between the light emitted by the dimming sub-pixel Pa and other adjacent sub-pixels, so the image displayed by the display panel 10 within the wide viewing angle range will have color abnormalities, thereby interfering with the picture effect within the wide viewing angle range, making it impossible for observers within the wide viewing angle range to clearly view the image information.

[0087] like Fig.18 As shown in the third embodiment of the present application Fig.14 The cross-sectional structure diagram of the pixel unit in the display panel 10 along the II-II line is shown.

[0088] The display panel 10 includes a substrate 110, a driving circuit layer 120, a light emitting element layer 130 and an insulating packaging layer 140 which are stacked in sequence from bottom to top. The substrate 110 may be made of glass, and the driving circuit layer 120 may be arranged as follows: Figure 5 The various components of the driving circuit in the sub-pixel are shown.

[0089] The light emitting element layer 130 includes a plurality of light emitting elements OLED arranged in a matrix, wherein each light emitting element OLED includes a first display electrode 131 , a light emitting layer 133 and a second display electrode 132 which are sequentially stacked on the surface of the driving circuit layer 120 .

[0090] The two adjacent light-emitting elements OLED also include a pixel definition layer 134. It can be understood that the pixel definition layer 134 is used to insulate and separate the light-emitting elements OLED from each other to form sub-pixels that emit light of different colors. That is, the pixel definition layer 134 is used to divide each sub-pixel, and is also used to accommodate the organic light-emitting material of the light-emitting layer 133. Specifically, the pixel definition layer 134 divides the display area of ​​the display panel 10 into a plurality of array-arranged pixel units P and sub-pixels. Among them, the height (thickness) of the pixel definition layer 134 relative to the driving circuit layer 120 is greater than the height (thickness) of the light-emitting element OLED relative to the driving circuit layer 120, thereby preventing the light emitted by the adjacent light-emitting elements OLED from mixing, and also preventing the leakage of current between the second display electrodes 132 of the adjacent light-emitting elements OLED and causing false triggering.

[0091] The insulating encapsulation layer 140 covers the surface of the light emitting element layer 130, and a dimming unit LA is further provided in the insulating encapsulation layer 140 corresponding to the position of the dimming sub-pixel Pa, that is, the dimming unit LA is provided in the insulating encapsulation layer 140. The orthographic projection area of ​​the dimming unit LA on the surface of the substrate 110 is equal to the orthographic projection area of ​​the light emitting element OLED on the surface of the substrate 110, and the orthographic projection of the dimming unit LA on the surface of the substrate 110 overlaps with the orthographic projection of the light emitting element OLED on the surface of the substrate 110.

[0092] In the present embodiment, the dimming portion LA is in the shape of a spherical shell as a whole and covers all light emitting directions of the dimming sub-pixel Pa. In other words, the dimming portion LA is in the shape of a curved shell that is protruding away from the light-emitting element OLED, and the inner surface (not marked) edge and the outer surface (not marked) edge of the dimming portion LA are both connected to the surface of the pixel definition layer 134.

[0093] For details, please refer to Figure 18-19 , Fig.19 for Fig.18 FIG. 4 is a top view of the dimming unit LA. Figure 18-19 As shown, the dimming unit LA includes a first electrode E1, a second electrode E2, a third electrode E3, and a fourth electrode E4, wherein the first electrode E1, the second electrode E2, the third electrode E3, and the fourth electrode E4 are all transparent electrodes.

[0094] The first electrode E1 is disposed adjacent to the light emitting element OLED, that is, the first electrode E1 is disposed on the inner surface of the dimming portion LA. The second electrode E2, the third electrode E3, and the fourth electrode E4 are disposed on the outer surface of the dimming portion LA, that is, the second electrode E2, the third electrode E3, and the fourth electrode E4 are sequentially disposed in a direction away from the light emitting element OLED in a manner of being spaced apart by a preset distance, and the second electrode E2, the third electrode E3, and the fourth electrode E4 are respectively in a ring shape, that is, the diameters of the second electrode E2, the third electrode E3, and the fourth electrode E4 are sequentially reduced.

[0095] A color-changing layer LL is sandwiched between the first electrode E1 and the second electrode E2, the third electrode E3, and the fourth electrode E4. In this embodiment, the color-changing layer is made of an electrochromic material. When the second electrode E2, the third electrode E3, and the fourth electrode E4 are selectively applied with voltage or not applied with voltage, the color-changing layer LL at different positions has different light transmittance, thereby adjusting the light output direction and light output amount of the light modulating unit LA.

[0096] Specifically, see Figure 20-22 , which is Fig.18 FIG. 1 is a schematic diagram of light output of the dimming unit LA. Fig. 20 As shown, when the display panel 10 is in the second display mode, when the first electrode E1 and the second electrode E2, the third electrode E3, and the fourth electrode E4 are all loaded with voltage, the second electrode E2, the third electrode E3, and the fourth electrode E4 respectively form an electric field with the first electrode E1, so that light can be emitted in the range where the second electrode E2, the third electrode E3, and the fourth electrode E4 are located, so that the display panel 10 has a first adjustment viewing angle EA1 in the side viewing angle range.

[0097] like Fig.21 As shown, when the display panel 10 is in the second display mode, when the first electrode E1 and the second electrode E2 and the third electrode E3 are loaded with voltage, and the fourth electrode E4 is not loaded with voltage, only the second electrode E2 and the third electrode E3 respectively form an electric field with the first electrode E1, then light can be emitted in the range where the second electrode E2 and the third electrode E3 are located, so that the display panel 10 has a second adjustment viewing angle EA2 in the side viewing angle range.

[0098] like Fig. 22 As shown, when the display panel 10 is in the second display mode, when the first electrode E1 and the second electrode E2 are loaded with voltage, and the third electrode E3 and the fourth electrode E4 are not loaded with voltage, only the second electrode E2 and the first electrode E1 form an electric field, so that light can be emitted in the range where the second electrode E2 is located, so that the display panel 10 has a third adjustment viewing angle EA3 within the side viewing angle range. Among them, the first adjustment viewing angle EA1, the second adjustment viewing angle EA2 and the third adjustment viewing angle EA3 decrease in sequence.

[0099] It can be seen that by adjusting whether the voltage is selectively loaded on the first electrode E1 and the second electrode E2, the third electrode E3, and the fourth electrode E4, thereby adjusting the position where the electric field is formed, the side viewing angle corresponding to the viewing angle range can be flexibly adjusted, which is convenient for users to use according to different environments and usage conditions.

[0100] Although the present embodiment illustrates that in the dimming part TA of the dimming sub-pixel Pa, in addition to the first electrode E1 adjacent to the light-emitting element OLED, the electrodes away from the light-emitting element OLED are the second electrode E2, the third electrode E3, and the fourth electrode E4, other numbers may be provided according to actual needs, such as only the second electrode E2, or only the second electrode E2 and the third electrode E3, or four or five electrodes may be provided, and the present invention is not limited to the examples of this embodiment.

[0101] In one embodiment of the present application, when the display panel 10 is in the second display mode, the voltage applied to the first electrode E1 to the fourth electrode E4 can be adjusted according to the ambient light, thereby adjusting the transparency of the dimming unit LA to adjust the angle and brightness of the light transmitted in the side viewing angle and the main viewing angle range.

[0102] It should be noted that when the display panel 10 is in the first display mode, the voltage formed by the first electrode E1 to the fourth electrode E4 makes the dimming part LA completely transparent, or in other words, the transparency of the dimming part LA is greater than the threshold value, so that the light emitted by the light-emitting element OLED in the dimming sub-pixel Pa all comes from the dimming part Pa, and does not block the light emitted by the light-emitting element OLED, so that the same light is emitted in the main viewing angle and the test angle range to display an image of the same color and brightness, thereby ensuring that the image displayed by the display panel 10 in the main viewing angle and the side viewing angle range is the same without the problems of color mixing and color deviation, so that the display effect is better.

[0103] See also Fig.23 , which is as shown in the fourth embodiment of the present application Fig.14 The cross-sectional structure diagram of the pixel unit in the display panel 10 along the II-II line is shown. Fig.18 The structures of the display panels 10 shown are basically the same, and the only difference is the specific structure of the dimming unit LA.

[0104] Please also Fig.23 and Fig.24 , Fig.24 for Fig.23 The enlarged structural diagram along line V is shown. The inner surface of the dimming part LA includes a first electrode E1, and the outer surface of the dimming part further includes a second electrode E2 to an nth electrode En, where n is an integer greater than 2.

[0105] The second electrode E2, the third electrode E3, ..., and the nth electrode En are arranged in sequence in a direction away from the light-emitting element OLED at a preset distance, and the second electrode E2, the third electrode E3, ..., and the nth electrode En are all ring-shaped, that is, the diameters of the second electrode E2, the third electrode E3, ..., and the nth electrode En decrease in sequence.

[0106] By setting the width of the preset distance, the second electrode E2, the third electrode E3, ..., and the nth electrode En within the viewing angle range are adjusted to form a slit grating pattern. By adjusting whether the second electrode E2, the third electrode E3, ..., and the nth electrode En are applied with voltage, alternating transparent and opaque areas are formed, thereby forming a grid structure to constitute a diffraction grating for diffracting the light emitted by the dimming sub-pixel Pa. The light emitted by the dimming sub-pixel Pa is diffracted into light of multiple colors, thereby enhancing the color mixing of the light of adjacent sub-pixels in a preset direction, and further causing color deviation of adjacent sub-pixels in the preset direction, so that the clarity of the image displayed within the adjustment viewing angle range in the side viewing angle is limited, thereby preventing information from being leaked within the side viewing angle range and improving the security of image display on the display panel 10.

[0107] See also Fig.25 , which is as shown in the fifth embodiment of the present application Fig.23 The enlarged structure schematic diagram along line V is shown. In this embodiment, Fig.24 The second electrode E2 to the nth electrode En are substantially the same, except that the first electrode E1 includes a plurality of annular electrodes spaced at a preset distance within the side viewing angle range.

[0108] Specifically, the second electrode E2, the third electrode E3, ..., and the nth electrode En are arranged in sequence in a direction away from the light-emitting element OLED at a preset distance, and the second electrode E2, the third electrode E3, ..., and the nth electrode En are all ring-shaped, that is, the diameters of the second electrode E2, the third electrode E3, ..., and the nth electrode En decrease in sequence.

[0109] At the same time, corresponding to the second electrode E2, the third electrode E3, ..., and the nth electrode En, the first electrode E1 includes a plurality of annular electrodes E1c spaced at preset distances within the adjustment viewing angle range, and the plurality of annular electrodes E1c correspond to the second electrode E2, the third electrode E3, ..., and the nth electrode En in a one-to-one correspondence.

[0110] By setting the width of the preset distance, the second electrode E2, the third electrode E3, ..., the nth electrode En and the multiple annular electrodes E1c within the adjustment viewing angle range are loaded with voltages at intervals to form an electric field to form a slit grating pattern, that is, alternating transparent and opaque areas are formed within the adjustment viewing angle range, thereby forming a grid structure to constitute a diffraction grating for diffracting the light emitted by the dimming sub-pixel Pa. The light emitted by the dimming sub-pixel Pa is diffracted into light of multiple colors, thereby enhancing the color mixing of the light of adjacent sub-pixels in a preset direction, and then causing color deviation of adjacent sub-pixels in the preset direction, so that the clarity of the image displayed within the adjustment viewing angle range in the side viewing angle is limited, thereby preventing information from being leaked within the side viewing angle range and improving the security of image display on the display panel 10.

[0111] By respectively arranging a plurality of electrodes, the dimming unit LA can perform different display modes under different ambient light intensities, thereby effectively improving the dimming effect of the display panel while ensuring the visibility of the main viewing angle.

[0112] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display panel, comprising a plurality of sub-pixels disposed on a substrate, wherein the plurality of sub-pixels are used to emit light of different colors to perform image display; characterized in that: The display panel also includes a plurality of dimming sections, wherein the number of the dimming sections is less than the number of the sub-pixels, and one of the dimming sections covers the surface of a light emitting direction of the sub-pixel, wherein the area of ​​the orthographic projection of the dimming section on the substrate surface is less than or equal to the area of ​​the orthographic projection of the sub-pixel on the substrate surface, and the orthographic projection of the dimming section on the substrate surface overlaps with the orthographic projection of the sub-pixel on the substrate surface, and when the display panel is in a first display mode, the sub-pixel provided with the dimming section displays an image through the light emitted by the dimming section, and when the display panel is in a second display mode, the dimming section adjusts the direction of the light emitted by the sub-pixel to control the light overlap between the sub-pixel and the adjacent sub-pixel in a preset direction.

2. The display panel according to claim 1, wherein: The multiple sub-pixels include a first color sub-pixel that emits a first color light, a second color sub-pixel that emits a second color light, and a third color sub-pixel that emits a third color light. At least one of the first color sub-pixel, at least one of the second color sub-pixel, and at least one of the third color sub-pixel are adjacently arranged and constitute a pixel unit. In each of the pixel units, the dimming part is arranged corresponding to the first color sub-pixel, the second color sub-pixel, and / or the third color sub-pixel, wherein the area of ​​the orthographic projection of the dimming part on the surface of the substrate is smaller than the area of ​​the orthographic projection of the sub-pixel on the surface of the substrate, and the orthographic projection of the dimming part on the surface of the substrate overlaps with the orthographic projection of the sub-pixel on the surface of the substrate.

3. The display panel according to claim 2, wherein: The sub-pixels corresponding to the dimming unit in each of the pixel units emit light of the same color; or, The sub-pixels corresponding to the dimming parts in any two adjacent pixel units emit light of different colors; or, The dimming unit is correspondingly arranged at least two sub-pixels in each of the pixel units.

4. The display panel according to claim 1, wherein: The plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel, a third color sub-pixel and a dimming sub-pixel, and at least one of the first color sub-pixel, at least one of the second color sub-pixel, at least one of the third color sub-pixel and at least one of the dimming sub-pixel are adjacently arranged to form a pixel unit; In each of the pixel units, the dimming part is arranged corresponding to the dimming sub-pixel, wherein the area of ​​the orthographic projection of the dimming part on the surface of the substrate is equal to the area of ​​the orthographic projection part of the dimming sub-pixel on the surface of the substrate, and the orthographic projection of the dimming part on the surface of the substrate overlaps with the orthographic projection of the dimming sub-pixel on the surface of the substrate.

5. The display panel according to claim 4, wherein: The surface of the substrate includes a driving circuit layer, a light-emitting element layer and an insulating packaging layer which are stacked in sequence. The light-emitting element layer corresponds to a plurality of sub-pixels including a plurality of light-emitting elements arranged in a matrix. The light-emitting elements include a first display electrode, a light-emitting layer and a second display electrode which are stacked. The dimming unit is arranged on the surface of the insulating packaging layer and faces the light-emitting elements.

6. The display panel according to claim 4, wherein: The substrate surface includes a driving circuit layer, a light-emitting element layer and an insulating packaging layer stacked in sequence, the light-emitting element layer corresponding to the plurality of sub-pixels includes a plurality of light-emitting elements arranged in a matrix, the light-emitting elements include a first display electrode, a light-emitting layer and a second display electrode stacked, and any adjacent light-emitting elements also include a pixel definition layer; The dimming unit is disposed in the insulating packaging layer, connected to the pixel definition layer and correspondingly covers all light emitting directions of the dimming sub-pixels.

7. The display panel according to claim 6, wherein: The dimming part is in the shape of a curved shell protruding away from the light-emitting element, and the inner surface edge and the outer surface edge of the dimming part are connected to the surface of the pixel definition layer, including a first electrode, a color-changing layer, a second electrode and a third electrode, the color-changing layer is sandwiched between the first electrode, the second electrode and the third electrode, the first electrode and the second electrode are loaded with a voltage to form an electric field for adjusting the transmittance of the color-changing layer, and the first electrode and the third electrode are loaded with a voltage to form an electric field for adjusting the transmittance of the color-changing layer, wherein the first electrode is arranged on the inner surface adjacent to the light-emitting element, the second electrode and the second electrode are arranged on the outer surface away from the light-emitting element, the second electrode and the second electrode are arranged in sequence in a direction away from the light-emitting element in a manner of being spaced by a preset distance, and the second electrode and the third electrode are both ring-shaped; The display panel is in the first display mode, the first electrode, the second electrode and the third electrode are all loaded with a preset voltage, and the dimming part is in a transparent state to control the light emitted by the light-emitting element to be emitted from the dimming part; the display mode is in the second display mode, the first electrode, the second electrode and the third electrode are selectively loaded with a voltage to adjust the light emitting direction and angle of the dimming sub-pixel.

8. The display panel according to claim 6, wherein: The dimming section is in the shape of a curved shell convex in a direction away from the light-emitting element, and the inner surface edge and the outer surface edge of the dimming section are both connected to the surface of the pixel definition layer, the inner surface of the dimming section includes a first electrode, and the outer surface of the dimming section includes a second electrode to an nth electrode, wherein n is an integer greater than 2, and the color-changing layer is sandwiched between the first electrode and the second electrode to the nth electrode, and a voltage is applied to the first electrode and the second electrode to the nth electrode to form an electric field for adjusting the transmittance of the color-changing layer, wherein, starting from the pixel definition layer adjacent to the pixel definition layer, the second electrode to the nth electrode are sequentially arranged in a manner of being spaced by a preset distance in a direction away from the light-emitting element, and the second electrode to the nth electrode are each in a ring shape.

9. The display panel according to claim 8, wherein: The display panel is in the first display mode, the first electrode, the second electrode to the nth electrode are all loaded with a preset voltage, and the dimming part is in a transparent state to control the light emitted by the light emitting element to be emitted from the dimming part; The display mode is in the second display mode, a preset voltage is applied to the first electrode, a voltage is selectively applied to the second electrode to the nth electrode, and a slit grating is formed between the first electrode and the second electrode to the nth electrode.

10. A display device, characterized in that: It comprises a power supply module and a display panel as described in any one of claims 1 to 9, wherein the power supply module is used to provide driving power for the display panel to perform image display.

Images