Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel includes: a substrate; the light-emitting element layer is located on one side of the substrate, and the light-emitting element layer comprises a plurality of light-emitting elements; the color film layer is located on the side, away from the substrate, of the light-emitting element layer, the color film layer comprises a plurality of color resistance structures corresponding to the light-emitting elements and a plurality of shading structures located on the peripheries of the color resistance structures, the color film layer further comprises a plurality of peep-proof structures, each peep-proof structure has a first form and a second form, and the first form is different from the second form; the display panel comprises a shared display mode and a peep-proof display mode, the peep-proof structure is in a first form in the shared display mode, and the peep-proof structure is in a second form in the peep-proof display mode; the display panel and the display device with the shared display and peep-proof display switching function are simple in structure and better in switching effect.

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] With the development of display technology, display devices such as mobile phones and tablet computers have more and more extensive applications. Usually, the display device has a large viewing angle, and users at different viewing angles can share the displayed information. However, in some special scenarios, the user hopes that the information displayed by the display device is not shared with users at other viewing angles around him, that is, he hopes that the display device has an anti-peeping function. In the related technology, the anti-peeping display technical solution based on the double-layer display screen architecture can realize the shared display and anti-peeping display switching functions. However, the technical principles involved in this type of technical solution are complex, not only difficult to implement, but also the switching effect is not good. Summary of the invention

[0003] Based on this, it is necessary to provide a display panel and a display device with a simple structure and better switching effect and a shared display and an anti-peeping display switching function in order to solve the above technical problems.

[0004] In a first aspect, the present application provides a display panel, the display panel comprising:

[0005] substrate;

[0006] A light-emitting element layer, located on one side of the substrate, the light-emitting element layer comprising a plurality of light-emitting elements;

[0007] a color filter layer, located on a side of the light-emitting element layer away from the substrate, the color filter layer comprising a plurality of color-resistance structures arranged corresponding to the plurality of light-emitting elements and a plurality of light-shielding structures located around the plurality of color-resistance structures, the color filter layer further comprising a plurality of privacy-preventing structures, the privacy-preventing structures having a first form and a second form, the first form being different from the second form;

[0008] The display panel includes a shared display mode and an anti-peeping display mode. In the shared display mode, the anti-peeping structure is in a first state, and in the anti-peeping display mode, the anti-peeping structure is in a second state.

[0009] In a second aspect, the present application further provides a display device, comprising the display panel as described in the first aspect.

[0010] The above-mentioned display panel and display device, wherein the display panel includes a substrate, a light-emitting element layer and a color filter layer. The light-emitting element layer is located on one side of the substrate; the light-emitting element layer includes a plurality of light-emitting elements. The color filter layer is located on a side of the light-emitting element layer away from the substrate; the color filter layer includes a plurality of color-resistance structures arranged corresponding to the plurality of light-emitting elements and a plurality of light-shielding structures located around the plurality of color-resistance structures. The color filter layer also includes a plurality of anti-peeping structures, the anti-peeping structures having a first form and a second form, the first form and the second form being different.

[0011] The technical solution of the embodiment of the present application is to set an anti-peeping structure in the color film layer based on the CFOT (Color Filter On TFE) technology. When the anti-peeping structure is in the first form, the display panel is in the shared display mode. When the anti-peeping structure is in the second form, the display panel is in the anti-peeping display mode. By switching the anti-peeping structure between the first form and the second form, the switching function of the display panel between the shared display and the anti-peeping display can be realized. Not only is the structure simple, but the switching is also easy to achieve, and the switching effect is also better. Among them, the CFOT technology is a technology that deposits a color film after thin film encapsulation (TFE), and the color film replaces the polarizer for filtering, thereby reducing the thickness of the screen and achieving bendability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] FIG1 is a schematic top view of a display panel in one embodiment;

[0014] Figure 2 A cross-sectional view of the display panel along line CC' in FIG. 1 ;

[0015] Figure 3A is a schematic top view of a color-resistance structure in one embodiment;

[0016] Figure 3B for Figure 3A A schematic diagram of a first form of the anti-peep structure in the middle color blocking structure;

[0017] Figure 3C for Figure 3A A schematic diagram of the anti-peep structure in the middle color blocking structure having a second form;

[0018] FIG4A is a schematic diagram showing a first form of an anti-peeping structure in one embodiment;

[0019] FIG4B is a schematic diagram showing a second form of the anti-peeping structure in one embodiment;

[0020] Figure 5A is one of the schematic diagrams of the contact between the anti-peeping structure and the first electrode layer in one embodiment;

[0021] Figure 5B The second schematic diagram of the contact between the anti-peeping structure and the first electrode layer in one embodiment;

[0022] Fig. 6A This is one of the schematic diagrams of the color resistance structure in one embodiment;

[0023] Figure 6B The second schematic diagram of an embodiment of the anti-peeping structure having a second form;

[0024] Figure 6C One of the schematic diagrams of connecting the anti-peeping structure to the first electrode layer in one embodiment;

[0025] Fig. 7A The second schematic diagram of an anti-peeping structure having a first form in an embodiment;

[0026] Figure 7B The third schematic diagram of an embodiment of the anti-peeping structure having a second form;

[0027] Figure 8 The third schematic diagram of the contact between the anti-peeping structure and the first electrode layer in one embodiment;

[0028] Fig. 9A This is a second schematic diagram of a color-resistance structure in an embodiment;

[0029] Fig. 9B A fourth schematic diagram of an embodiment of the anti-peeping structure having a second form;

[0030] Fig. 9C The second schematic diagram of the connection between the anti-peeping structure and the first electrode layer in one embodiment;

[0031] Fig. 10A The third schematic diagram of an anti-peeping structure having a first form in an embodiment;

[0032] Fig. 10B Schematic diagram 5 of an embodiment of the anti-peeping structure having a second form;

[0033] Fig. 10C FIG. 3 is a schematic diagram of the connection between the anti-peeping structure and the first electrode layer in an embodiment.

[0034] Description of reference numerals:

[0035] 110 - substrate, 120 - pixel definition layer, 121 - light emitting element, 130 - thin film encapsulation layer, 140 - color filter layer, 141 - light shielding structure, 142 - color resistance structure, 1421 - groove, 143 - light shielding structure, 150 - first electrode layer, 151 - through hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] 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.

[0038] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0039] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0040] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0041] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0042] The display panel provided in the embodiment of the present application may be, but is not limited to, an OLED (Organic Light Emitting Diode) display panel or an LCD (Liquid Crystal Display) display panel.

[0043] In an exemplary embodiment, referring to FIG1 , a display panel is provided, wherein the display modes of the display panel include a shared display mode and an anti-peeping display mode; wherein the shared display mode means that the display panel has a larger viewing angle, and a user at a larger viewing angle can share information displayed by the display panel with a user at a smaller viewing angle, which can be understood as both a user at a larger viewing angle and a user at a smaller viewing angle can see the information displayed by the display panel; the anti-peeping display mode means that the display panel has a smaller viewing angle, and a user at a larger viewing angle cannot share the information displayed by the display panel with a user at a smaller viewing angle, which can be understood as only a user at a smaller viewing angle can see the information displayed by the display panel.

[0044] Combined with Figure 1 Figure 2 The display panel includes a substrate 110, a light-emitting element layer and a color filter layer 140. The substrate 110 is used to support the film layers, devices, etc. thereon; the substrate 110 can be a rigid substrate 110 or a flexible substrate 110; the substrate 110 can also be an array substrate, the array substrate has a plurality of pixel circuits arranged in an array, the pixel circuits are used to drive the connected light-emitting elements 121 to emit light, and the pixel circuits can correspond to the light-emitting elements 121 one by one. The display panel can also include a pixel definition layer 120, the pixel definition layer 120 includes a plurality of pixel openings arranged in an array, each pixel opening is used to set a light-emitting element 121, and the pixel openings can correspond to the light-emitting elements 121 one by one. The light-emitting element layer is located on one side of the substrate 110, and the light-emitting element layer includes a plurality of light-emitting elements 121 arranged in an array; for example, the light-emitting element 121 can be an organic light-emitting diode. The display panel can also include a thin film encapsulation layer 130, which is located on the side of the light-emitting element layer away from the substrate 110 and is used to encapsulate the light-emitting element layer.

[0045] The color filter layer 140 is located on the side of the light-emitting element layer away from the substrate 110; for example, the color filter layer 140 can be located on the side of the thin film encapsulation layer 130 away from the light-emitting element layer, so as to replace the traditional polarizer to filter the light emitted by the light-emitting element 121. The color filter layer 140 includes a plurality of color resist structures 142 arranged in an array and arranged corresponding to the plurality of light-emitting elements 121 arranged in an array. The color resist structures 142 can correspond to the light-emitting elements 121 one by one, wherein the light-emitting elements 121 can include red light-emitting elements, green light-emitting elements and blue light-emitting elements, and the corresponding color resist structures 142 can include red color resist structures, green color resist structures and blue color resist structures. In the direction perpendicular to the plane where the substrate 110 is located, the red color resist structure is arranged opposite to the red light-emitting element, the green color resist structure is arranged opposite to the green light-emitting element, and the blue color resist structure is arranged opposite to the blue light-emitting element. The color filter layer 140 further includes a plurality of light shielding structures 141 located around the plurality of color resist structures 142 . The plurality of light shielding structures 141 constitute a black matrix in the color filter layer 140 .

[0046] On this basis, the color film layer 140 further includes a plurality of anti-peep structures 143 (FIG. 1 and FIG. 2 ). Figure 2 The anti-peeping structure 143 is not shown in the figure, and reference may be made to the anti-peeping structure 143 shown in Figures 3 to 10 . The anti-peeping structure 143 has a first form and a second form, and the first form is different from the second form, wherein the form of the anti-peeping structure 143 may include but is not limited to the shape of the anti-peeping structure 143 and / or the color state of the anti-peeping structure 143; in the color film layer 140, different forms of the anti-peeping structure 143 correspond to different degrees of shielding of the light emitted by the light-emitting element 121 by the anti-peeping structure 143.

[0047] When the display panel is in the shared display mode, the anti-peeping structure 143 is in the first form, and when the display panel is in the anti-peeping display mode, the anti-peeping structure 143 is in the second form. That is, when the anti-peeping structure 143 is in the first form, the anti-peeping structure 143 does not block the light of the light emitting element layer at a larger viewing angle or blocks the light of the light emitting element layer at a larger viewing angle to a very small extent, and at this time, the user at a larger viewing angle can share the displayed information with the user at a smaller viewing angle, so that the display mode of the display panel is the shared display mode; and when the anti-peeping structure 143 is in the second form, the anti-peeping structure 143 blocks the light of the light emitting element layer at a larger viewing angle, so that the user at a larger viewing angle cannot share the displayed information with the user at a smaller viewing angle, so that the display mode of the display panel is the anti-peeping display mode.

[0048] The technical solution of the embodiment of the present application is to set an anti-peeping structure 143 in the color film layer 140 based on CFOT (Color Filter On TFE) technology. When the anti-peeping structure 143 is in a first form, the display panel is in a shared display mode. When the anti-peeping structure 143 is in a second form, the display panel is in an anti-peeping display mode. By switching the anti-peeping structure 143 between the first form and the second form, the switching function of the shared display and the anti-peeping display of the display panel can be realized. Not only is the structure simple, but the switching is also easy to realize and the switching effect is also better.

[0049] In the technical solution of the embodiment of the present application, in the color filter layer 140, there are many structures and settings of the anti-peep structure 143. Only a few of them are described below as examples, but they are not used as specific limitations on the technical solution of the present application.

[0050] In an exemplary embodiment, the anti-peeping structure 143 includes an electrodeformable material. For example, when a first voltage is applied to the anti-peeping structure 143, a first deformation is generated and the anti-peeping structure 143 is in a first state. At this time, the anti-peeping structure 143 does not block the light of the light emitting element layer at a larger viewing angle or blocks the light of the light emitting element layer at a larger viewing angle to a very small extent. Users at a larger viewing angle can share their displayed information with users at a smaller viewing angle, so that the display mode of the display panel is a shared display mode; and when a second voltage is applied to the anti-peeping structure 143, a second deformation is generated and the anti-peeping structure 143 is in a second state. At this time, the anti-peeping structure 143 blocks the light of the light emitting element layer at a larger viewing angle, which can be blocked to a greater extent, so that users at a larger viewing angle cannot share their displayed information with users at a smaller viewing angle, so that the display mode of the display panel is an anti-peeping display mode.

[0051] Exemplarily, the material of the anti-peeping structure 143 includes an electroactive polymer material, so that the anti-peeping structure 143 can not only realize the anti-peeping function, but also makes the anti-peeping structure 143 easy to realize and low in cost.

[0052] Exemplarily, the first voltage may be zero, the first deformation may be a deformation of zero, the second voltage may be a non-zero voltage, and the second deformation may be a non-zero deformation. For example, in the anti-peeping display mode, the anti-peeping structure 143 is connected to a preset voltage, the preset voltage is a non-zero voltage, and in the shared display mode, the voltage of the anti-peeping structure 143 is zero.

[0053] In the embodiment of the present application, the switching function between shared display and anti-peeping display of the display panel is realized through the electro-deformation of the anti-peeping structure 143. Not only is the structure simple, but the switching is also easy to realize and the switching effect is better.

[0054] In an exemplary embodiment, in combination FIG. 3A to FIG. 3CThe color-resistance structure 142 includes at least one groove 1421, the notch of the groove 1421 is located on the surface of the color-resistance structure 142 away from the substrate 110, and the bottom of the groove 1421 is located inside the color-resistance structure 142; the anti-peeping structure 143 is at least partially located in the groove 1421, and the anti-peeping structure 143 includes a first surface facing the substrate 110, and the first surface can be understood as the bottom surface of the anti-peeping structure 143, and can also be understood as the bottom surface of the anti-peeping structure 143; refer to Figure 3B , in shared display mode, the area of ​​the first surface is s1, reference Figure 3C , the area of ​​the first surface is s2 in the anti-peeping display mode.

[0055] For example, Figure 3B The length of the bottom surface of the middle privacy protection structure 143 along the circumferential direction of the color blocking structure 142 is Figure 3C The "length" of the bottom surface of the middle privacy protection structure 143 along the circumferential direction of the color blocking structure 142 is equal. Figure 3B The “width” of the bottom surface of the middle anti-peep structure 143 along the direction from the color blocking structure 142 to the light shielding structure 141 is less than Figure 3C The width of the bottom surface of the middle privacy protection structure 143 along the direction from the color blocking structure 142 to the light shielding structure 141 is equal to Figure 3B The length of the bottom surface of the middle anti-peep structure 143 is Figure 3B The product of the bottom "width" of the middle privacy protection structure 143, s2 is equal to Figure 3C The length of the bottom surface of the middle anti-peep structure 143 is Figure 3C The product of the "width" of the bottom surface of the anti-peeping structure 143, so s1<s2.

[0056] Continue to combine FIG. 3A to FIG. 3C The groove 1421 can be arranged at the edge of the color-resistance structure 142 to block the light of the light-emitting element layer with a larger viewing angle, thereby realizing anti-peeping display. Along the direction of the color-resistance structure 142 pointing to the substrate 110, the area of ​​the cross section of the groove 1421 parallel to the substrate 110 gradually increases, so as to provide sufficient space for the bottom of the anti-peeping structure 143 to deform in the groove 1421.

[0057] In the shared display mode, the first voltage is applied to the anti-peeping structure 143, referring to Figure 3B , the area of ​​the first surface at the bottom of the groove 1421 is s1. At this time, the degree of shielding of the light of the light-emitting element layer at a larger viewing angle by the anti-peeping structure 143 is very small, and the user at a larger viewing angle can share the displayed information with the user at a smaller viewing angle. In the anti-peeping display mode, the anti-peeping structure 143 is applied with a second voltage, referring to Figure 3CThe area of ​​the first surface at the bottom of the groove 1421 is s2. At this time, the anti-peeping structure 143 blocks the light of the light-emitting element layer at a larger viewing angle to a large extent, and the user at a larger viewing angle cannot share the displayed information with the user at a smaller viewing angle.

[0058] In this embodiment, a groove 1421 is formed on the color resist structure 142, and the anti-peeping structure 143 is at least partially disposed in the groove 1421. By switching the deformation size of the bottom of the anti-peeping structure 143 in the groove 1421, not only the switching function of the shared display and the anti-peeping display of the display panel is realized, but also there is no restriction on the density of the light-emitting elements in the display panel (i.e., the pixel density), thereby ensuring that the display panel has a higher pixel density.

[0059] In an exemplary embodiment, in combination with Figures 4A and 4B, a light-shielding structure 141 is arranged around a corresponding color-resistance structure 142, the light-shielding structure 141 may correspond one-to-one with the color-resistance structure 142, and the anti-peep structure 143 may correspond one-to-one with the color-resistance structure 142; each anti-peep structure 143 is located between a corresponding light-shielding structure 141 and a color-resistance structure 142, and the anti-peep structure 143 is in contact with the light-shielding structure 141 along a direction parallel to the plane where the substrate 110 is located.

[0060] In the shared display mode, referring to FIG. 4A , along the direction parallel to the plane where the substrate 110 is located, there is a gap between the privacy protection structure 143 and the color-resistance structure 142. At this time, the degree of electro-deformation of the privacy protection structure 143 is very small, and the degree of shielding of the light of the light-emitting element layer at a larger viewing angle by the privacy protection structure 143 is very small. Users at a larger viewing angle can share their displayed information with users at a smaller viewing angle, and the gap can provide sufficient space for the privacy protection structure 143 to produce a large deformation along the direction parallel to the plane where the substrate 110 is located. In the privacy display mode, referring to FIG. 4B , along the direction parallel to the plane where the substrate 110 is located, the privacy protection structure 143 is electro-deformed along the direction parallel to the plane where the substrate 110 is located until it is still in contact with the color-resistance structure 142. At this time, the privacy protection structure 143 is greatly deformed along the direction parallel to the plane where the substrate 110 is located, and the degree of shielding of the light of the light-emitting element layer at a larger viewing angle by the privacy protection structure 143 is very large. Users at a larger viewing angle cannot share their displayed information with users at a smaller viewing angle.

[0061] In this embodiment, an anti-peeping structure 143 is arranged between the light shading structure 141 and the color blocking structure 142. By switching the deformation size of the anti-peeping structure 143 between the light shading structure 141 and the color blocking structure 142, not only the switching function of the shared display and the anti-peeping display of the display panel is realized, but also there is no restriction on the density of the light-emitting elements in the display panel (i.e., the pixel density), thereby ensuring that the display panel has a higher pixel density.

[0062] In an exemplary embodiment, in combination Figure 5A and Figure 5B The display panel further includes a first electrode layer 150, which is located on a side of the color filter layer 140 away from the light-emitting element layer, wherein the first electrode layer 150 may be a transparent electrode layer to avoid affecting the light emission of the light-emitting element layer, and the anti-peeping structure 143 is in electrical contact with the first electrode layer 150 in a direction perpendicular to the plane where the substrate 110 is located; the display panel further includes a touch layer (not shown in the figure), which may be located between the color filter layer 140 and the light-emitting element layer, for example, between the color filter layer 140 and the thin film encapsulation layer 130, and the anti-peeping structure 143 is electrically connected to a touch metal layer in the touch layer through a corresponding through hole 151. The touch layer generally includes two touch metal layers and an insulating layer located between the two touch metal layers, wherein the two touch metal layers include a first touch metal layer closer to the light-emitting element layer and a second touch metal layer farther from the light-emitting element layer, wherein the second touch metal layer generally includes a touch electrode, and the first touch metal layer includes a bridge structure for connecting two adjacent touch electrodes. For example, the anti-peeping structure 143 is electrically connected to the second touch metal layer in the touch layer through the corresponding through hole 151. In this way, the first voltage and the second voltage can be applied to the anti-peeping structure 143 through the first electrode layer 150 and the touch metal layer to achieve the electro-induced deformation of the anti-peeping structure 143, that is, to achieve the first form and the second form of the anti-peeping structure 143.

[0063] In this embodiment, the existing touch metal layer in the touch display panel is used as an electrode layer of the anti-peeping structure 143, which can reduce the additional configuration of the electrode layer of the anti-peeping structure 143, thereby reducing the cost of the display panel.

[0064] In an exemplary embodiment, in combination FIG. 6A to FIG. 6B , along a direction perpendicular to the plane where the substrate 110 is located, the color-resistance structure 142 at least partially covers the anti-peeping structure 143. In this way, when the electro-induced deformation of the anti-peeping structure 143 is very small or zero, that is, when the display panel is in the shared display mode, the setting of the anti-peeping structure 143 will not affect the filtering of the color-resistance structure 142 for light with a larger viewing angle, thereby ensuring a good display effect of the display panel in the shared display mode.

[0065] refer to Figure 6CThe display panel also includes a first electrode layer 150, which is located on a side of the color filter layer 140 away from the light-emitting element layer, wherein the anti-peeping structure 143 is connected to the first electrode layer 150 through a corresponding first through hole 151 along a direction perpendicular to the plane where the substrate 110 is located; the display panel also includes a touch layer, which is located between the color filter layer 140 and the light-emitting element layer, and the anti-peeping structure 143 is electrically connected to a touch metal layer in the touch layer through a corresponding second through hole. The touch layer generally includes two touch metal layers and an insulating layer located between the two touch metal layers, the two touch metal layers include a first touch metal layer closer to the light-emitting element layer and a second touch metal layer farther from the light-emitting element layer, the second touch metal layer generally includes a touch electrode, and the first touch metal layer includes a bridge structure for connecting two adjacent touch electrodes. Exemplarily, the anti-peeping structure 143 is electrically connected to the second touch metal layer in the touch layer through a corresponding second through hole. In this way, the first voltage and the second voltage can be applied to the anti-peeping structure 143 through the first electrode layer 150 and the touch metal layer to achieve electro-deformation of the anti-peeping structure 143 , that is, to achieve the first form and the second form of the anti-peeping structure 143 .

[0066] In an exemplary embodiment, the privacy protection structure 143 includes an electrochromic material. For example, the privacy protection structure 143 has a first color state when a third voltage is applied, at which time the privacy protection structure 143 does not block the light of the light emitting element layer at a larger viewing angle or blocks the light of the light emitting element layer at a larger viewing angle to a very small extent, and a user at a larger viewing angle can share the displayed information with a user at a smaller viewing angle, so that the display mode of the display panel is a shared display mode; and the privacy protection structure 143 has a second color state when a fourth voltage is applied, at which time the privacy protection structure 143 blocks the light of the light emitting element layer at a larger viewing angle to a greater extent, so that a user at a larger viewing angle cannot share the displayed information with a user at a smaller viewing angle, so that the display mode of the display panel is a privacy protection display mode.

[0067] Exemplarily, the third voltage may be a non-zero voltage, the first color state is a transparent or approximately transparent state, the fourth voltage may be zero, and the second color state is a dark gray or black state. For example, in the anti-peeping display mode, the voltage of the anti-peeping structure 143 is zero, and in the shared display mode, the anti-peeping structure 143 is connected to a preset voltage, and the preset voltage is a non-zero voltage.

[0068] In an exemplary embodiment, in combination Fig. 7A and Figure 7BA light-shielding structure 141 is disposed around a corresponding color-resistance structure 142. The light-shielding structure 141 may correspond to the color-resistance structure 142 one-to-one, and the privacy-prevention structure 143 may correspond to the color-resistance structure 142 one-to-one. Each privacy-prevention structure 143 is located between a corresponding light-shielding structure 141 and a color-resistance structure 142. Along a direction parallel to the plane where the substrate 110 is located, the privacy-prevention structure 143 is in contact with both the light-shielding structure 141 and the color-resistance structure 142.

[0069] In shared display mode, refer to Fig. 7A The anti-peeping structure 143 is applied with a third voltage and has a first color state. At this time, the light transmittance of the anti-peeping structure 143 is the first transmittance. The anti-peeping structure 143 does not block the light of the light-emitting element layer with a larger viewing angle or the degree of blocking of the light of the light-emitting element layer with a larger viewing angle is very small. Users at a larger viewing angle can share the displayed information with users at a smaller viewing angle.

[0070] In privacy display mode, refer to Figure 7B The anti-peeping structure 143 is applied with a fourth voltage and has a second color state. At this time, the light transmittance of the anti-peeping structure 143 is the second transmittance, and the second transmittance is less than the first transmittance. The anti-peeping structure 143 blocks the light at a larger viewing angle of the light-emitting element layer to a large extent, and users at a larger viewing angle cannot share the displayed information with users at a smaller viewing angle.

[0071] In this embodiment, an anti-peeping structure 143 is provided between the light shading structure 141 and the color blocking structure 142. By switching the color state of the anti-peeping structure 143 between the light shading structure 141 and the color blocking structure 142, not only the switching function between the shared display and the anti-peeping display of the display panel is realized, but also there is no restriction on the density of the light emitting elements in the display panel (i.e., the pixel density), thereby ensuring that the display panel has a higher pixel density.

[0072] In an exemplary embodiment, referring to Figure 8The display panel also includes a first electrode layer 150, which is located on a side of the color filter layer 140 away from the light-emitting element layer, wherein the anti-peeping structure 143 is in electrical contact with the first electrode layer 150 along a direction perpendicular to the plane where the substrate 110 is located; the display panel also includes a touch layer, which is located between the color filter layer 140 and the light-emitting element layer, and the anti-peeping structure 143 is electrically connected to a touch metal layer in the touch layer through a corresponding through hole 151. The touch layer generally includes two touch metal layers and an insulating layer located between the two touch metal layers, the two touch metal layers include a first touch metal layer closer to the light-emitting element layer and a second touch metal layer farther from the light-emitting element layer, the second touch metal layer generally includes a touch electrode, and the first touch metal layer includes a bridge structure for connecting two adjacent touch electrodes. Exemplarily, the anti-peeping structure 143 is electrically connected to the second touch metal layer in the touch layer through a corresponding through hole 151. In this way, the third voltage and the fourth voltage can be applied to the anti-peeping structure 143 through the first electrode layer 150 and the touch metal layer to achieve electrochromism of the anti-peeping structure 143 , that is, to achieve the first form and the second form of the anti-peeping structure 143 .

[0073] In an exemplary embodiment, in combination 9A to 9C , along a direction perpendicular to the plane where the substrate 110 is located, the color-resistance structure 142 at least partially covers the anti-peeping structure 143. In this way, when the electro-induced deformation of the anti-peeping structure 143 is very small or zero, that is, when the display panel is in the shared display mode, the setting of the anti-peeping structure 143 will not affect the filtering of the color-resistance structure 142 for light with a larger viewing angle, thereby ensuring a good display effect of the display panel in the shared display mode.

[0074] refer to Fig. 9CThe display panel also includes a first electrode layer 150, which is located on a side of the color filter layer 140 away from the light-emitting element layer, wherein the anti-peeping structure 143 is connected to the first electrode layer 150 through a corresponding first through hole 151 along a direction perpendicular to the plane where the substrate 110 is located; the display panel also includes a touch layer, which is located between the color filter layer 140 and the light-emitting element layer, and the anti-peeping structure 143 is electrically connected to a touch metal layer in the touch layer through a corresponding second through hole. The touch layer generally includes two touch metal layers and an insulating layer located between the two touch metal layers, the two touch metal layers include a first touch metal layer closer to the light-emitting element layer and a second touch metal layer farther from the light-emitting element layer, the second touch metal layer generally includes a touch electrode, and the first touch metal layer includes a bridge structure for connecting two adjacent touch electrodes. Exemplarily, the anti-peeping structure 143 is electrically connected to the second touch metal layer in the touch layer through a corresponding second through hole. In this way, the third voltage and the fourth voltage can be applied to the anti-peeping structure 143 through the first electrode layer 150 and the touch metal layer to achieve electrochromism of the anti-peeping structure 143 , that is, to achieve the first form and the second form of the anti-peeping structure 143 .

[0075] In an exemplary embodiment, in combination FIG. 10A to FIG. 10C A light-shielding structure 141 is arranged around a corresponding color-resistance structure 142, the light-shielding structure 141 can correspond to the color-resistance structure 142 one-to-one, and the anti-peeping structure 143 can correspond to the color-resistance structure 142 one-to-one; each anti-peeping structure 143 is at least located between a corresponding light-shielding structure 141 and a color-resistance structure 142; along a direction parallel to the plane where the substrate 110 is located, two adjacent anti-peeping structures 143 are connected; along a direction perpendicular to the plane where the substrate 110 is located, the anti-peeping structure 143 covers the light-shielding structure 141.

[0076] In this embodiment, two adjacent anti-peep structures 143 are connected, which is more convenient to provide voltage to the anti-peep structures 143 in the entire color filter layer 140, compared with the case where each anti-peep structure 143 in the entire color filter layer 140 is independent and dispersed, so that dynamic anti-peeping of the display panel is easier to achieve. In addition, a whole anti-peep layer can be first formed on the side of the light-shielding structure 141 away from the light-emitting element layer, and then a plurality of openings for accommodating the plurality of color-resistance structures 142 are formed on the anti-peep layer. After the color-resistance structures 142 are formed in each opening, the color filter layer 140 includes not only a plurality of light-shielding structures 141 and a plurality of color-resistance structures 142, but also a plurality of anti-peep structures 143, so that the manufacturing method of the anti-peep structure 143 is simpler.

[0077] refer to Fig. 10CThe display panel also includes a first electrode layer 150, which is located on a side of the color filter layer 140 away from the light-emitting element layer, wherein the anti-peeping structure 143 is in electrical contact with the first electrode layer 150 along a direction perpendicular to the plane where the substrate 110 is located; the display panel also includes a touch layer, which is located between the light-emitting element layer and the color filter layer 140, and the anti-peeping structure 143 is electrically connected to a touch metal layer in the touch layer through a corresponding through hole 151. The touch layer generally includes two touch metal layers and an insulating layer located between the two touch metal layers, the two touch metal layers include a first touch metal layer closer to the light-emitting element layer and a second touch metal layer farther from the light-emitting element layer, the second touch metal layer generally includes a touch electrode, and the first touch metal layer includes a bridge structure for connecting two adjacent touch electrodes. Exemplarily, the anti-peeping structure 143 is electrically connected to the second touch metal layer in the touch layer through a corresponding through hole 151. In this way, the third voltage and the fourth voltage can be applied to the anti-peeping structure 143 through the first electrode layer 150 and the touch metal layer to achieve electrochromism of the anti-peeping structure 143 , that is, to achieve the first form and the second form of the anti-peeping structure 143 .

[0078] In the embodiment of the present application, in the color film layer 140, there are many structures and setting positions of the anti-peeping structure 143. The above-mentioned structures are only used as examples and are not used as specific limitations. Any structure and setting position of the anti-peeping structure 143 that adopts the inventive concept of the present application and realizes dynamic anti-peeping of the display panel through the anti-peeping structure 143 are within the protection scope of the present application.

[0079] In an exemplary embodiment, a display device is also provided, which includes a display panel of any of the above embodiments. The display device may be, but is not limited to, an OLED display device or an LCD display device. The display device is, for example, but not limited to, a mobile phone, a tablet computer, a wearable device, etc.

[0080] The display device and display panel provided in the embodiments of the present application belong to the same inventive concept, can solve the same technical problem, and thus achieve the same technical effect, that is, an anti-peeping structure 143 is set in the color film layer 140 based on the CFOT (Color Filter On TFE) technology, and when the anti-peeping structure 143 is in the first form, the display panel is in a shared display mode, and when the anti-peeping structure 143 is in the second form, the display panel is in an anti-peeping display mode. By switching the anti-peeping structure 143 between the first form and the second form, the switching function of the shared display and the anti-peeping display of the display panel can be realized. Not only is the structure simple, but the switching is also easy to realize and the switching effect is better. The rest of the repeated content will not be repeated.

[0081] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0082] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: The display panel comprises: substrate; A light-emitting element layer, located on one side of the substrate, the light-emitting element layer comprising a plurality of light-emitting elements; a color filter layer, located on a side of the light-emitting element layer away from the substrate, the color filter layer comprising a plurality of color-resistance structures arranged corresponding to the plurality of light-emitting elements and a plurality of light-shielding structures located around the plurality of color-resistance structures, the color filter layer further comprising a plurality of privacy-preventing structures, the privacy-preventing structures having a first form and a second form, the first form being different from the second form; The display panel includes a shared display mode and an anti-peeping display mode. In the shared display mode, the anti-peeping structure is in a first state, and in the anti-peeping display mode, the anti-peeping structure is in a second state.

2. The display panel according to claim 1, characterized in that: The anti-peeping structure includes an electrodeformable material.

3. The display panel according to claim 2, characterized in that: The color resist structure comprises at least one groove, the notch of the groove is located on the surface of the color resist structure away from the substrate, the bottom of the groove is located inside the color resist structure, and the area of ​​the cross section of the groove parallel to the substrate gradually increases along the direction from the color resist structure to the substrate; The anti-peeping structure is at least partially located in the groove, and the anti-peeping structure includes a first surface facing the substrate. In the shared display mode, the area of ​​the first surface is s1, and in the anti-peeping display mode, the area of ​​the first surface is s2, wherein s1<s2.

4. The display panel according to claim 2, characterized in that: Each of the privacy-prevention structures is located between a corresponding light-shielding structure and a color-resistance structure, and the privacy-prevention structure is in contact with the light-shielding structure along a direction parallel to the plane where the substrate is located; In the shared display mode, there is a gap between the anti-peeping structure and the color-blocking structure along a direction parallel to the plane where the substrate is located; In the anti-peeping display mode, along a direction parallel to the plane where the substrate is located, the anti-peeping structure is electrically deformed until it is still in contact with the color-resistance structure.

5. The display panel according to any one of claims 3 or 4, characterized in that: The display panel further comprises a first electrode layer, the first electrode layer being located on a side of the color filter layer away from the light-emitting element layer, wherein the anti-peeping structure is in electrical contact with the first electrode layer along a direction perpendicular to the plane where the substrate is located; The display panel further includes a touch layer, which is located between the color filter layer and the light-emitting element layer. The anti-peeping structure is electrically connected to a touch metal layer in the touch layer through a corresponding through hole.

6. The display panel according to claim 4, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the color-resistance structure at least partially covers the anti-peeping structure; The display panel further includes a first electrode layer, which is located on a side of the color filter layer away from the light-emitting element layer, wherein the anti-peeping structure is connected to the first electrode layer through a corresponding first through hole along a direction perpendicular to the plane where the substrate is located; The display panel further includes a touch layer, which is located between the color filter layer and the light-emitting element layer. The anti-peeping structure is electrically connected to a touch metal layer in the touch layer through a corresponding second through hole.

7. The display panel according to any one of claims 2 to 4, characterized in that: In the anti-peeping display mode, the anti-peeping structure is connected to a preset voltage, and in the shared display mode, the voltage of the anti-peeping structure is zero.

8. The display panel according to claim 1, characterized in that: The anti-peeping structure includes an electrochromic material.

9. The display panel according to claim 8, characterized in that: Each of the privacy-prevention structures is located between a corresponding light-shielding structure and a corresponding color-resistance structure, and along a direction parallel to the plane where the substrate is located, the privacy-prevention structure is in contact with both the light-shielding structure and the color-resistance structure; In the shared display mode, the light transmittance of the anti-peeping structure is a first transmittance, and in the anti-peeping display mode, the light transmittance of the anti-peeping structure is a second transmittance, wherein the second transmittance is less than the first transmittance.

10. The display panel according to claim 9, characterized in that: The display panel further comprises a first electrode layer, the first electrode layer being located on a side of the color filter layer away from the light-emitting element layer, wherein the anti-peeping structure is in electrical contact with the first electrode layer along a direction perpendicular to the plane where the substrate is located; The display panel further includes a touch layer, which is located between the color filter layer and the light-emitting element layer. The anti-peeping structure is electrically connected to a touch metal layer in the touch layer through a corresponding through hole.

11. The display panel according to claim 9, characterized in that: Along a direction perpendicular to the plane where the substrate is located, the color-resistance structure at least partially covers the anti-peeping structure; The display panel further includes a first electrode layer, which is located on a side of the color filter layer away from the light-emitting element layer, wherein the anti-peeping structure is connected to the first electrode layer through a corresponding first through hole along a direction perpendicular to the plane where the substrate is located; The display panel further includes a touch layer, which is located between the color filter layer and the light-emitting element layer. The anti-peeping structure is electrically connected to a touch metal layer in the touch layer through a corresponding second through hole.

12. The display panel according to claim 8, characterized in that: Each of the privacy-prevention structures is at least located between a corresponding shading structure and a color-resistance structure; along a direction parallel to the plane where the substrate is located, two adjacent privacy-prevention structures are connected; along a direction perpendicular to the plane where the substrate is located, the privacy-prevention structure covers the shading structure.

13. The display panel according to claim 12, characterized in that: The display panel further comprises a first electrode layer, the first electrode layer being located on a side of the color filter layer away from the light-emitting element layer, wherein the anti-peeping structure is in electrical contact with the first electrode layer along a direction perpendicular to the plane where the substrate is located; The display panel further includes a touch layer, which is located between the light emitting element layer and the color filter layer. The anti-peeping structure is electrically connected to a touch metal layer in the touch layer through a corresponding through hole.

14. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-13.

Images