Anti-peeping display module, display panel and electronic equipment

Abstract

The invention provides a peep-proof display module, a display panel and electronic equipment, and relates to the technical field of display. In the peep-proof state, the control electrode controls the long axis of the dye liquid crystal in the set area of the hollow supporting column to be parallel to the first direction, equivalently, a light blocking layer in the side view angle direction is formed in the peep-proof display module, and therefore the peep-proof effect in the side view angle direction is achieved. The thickness of the peep-proof display module can be guaranteed to be small, the light and thin design trend of the display panel is met, the phenomenon that the peep-proof film blocks light transmission and sacrifices the brightness of the positive visual angle can be avoided, and the high brightness of the peep-proof display module is guaranteed. Meanwhile, the peep-proof display module provided by the invention can realize switching control of the peep-proof state and the display state, and the display application scene of the peep-proof display module is expanded.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to an anti-peeping display module, a display panel, and an electronic device. Background Art

[0002] Current mobile phones, tablets, and other terminal devices generally use displays with wide viewing angles, providing a great viewing experience when reading or browsing content. However, while users enjoy the screen display, nearby people can also clearly see the screen content, posing a significant risk to personal privacy and confidentiality. Summary of the Invention

[0003] In view of this, the present application provides an anti-peeping display module, a display panel and an electronic device, which effectively solve the technical problems existing in the prior art. On the basis of realizing the anti-peeping function of the anti-peeping display module, the thickness of the anti-peeping display module is ensured to be relatively small; at the same time, the switching control of the anti-peeping state and the display state of the anti-peeping display module is realized, thereby expanding the display application scenarios of the anti-peeping display module.

[0004] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0005] An anti-peeping display module, comprising:

[0006] A color filter substrate and an array substrate arranged opposite to each other in a first direction;

[0007] A liquid crystal layer and a plurality of support columns are provided between the color filter substrate and the array substrate, wherein at least some of the support columns are hollow support columns, and the hollow support columns are filled with a dye liquid crystal layer;

[0008] A control electrode is arranged corresponding to the hollow support column, and the control electrode is used to control the long axis of the dye liquid crystal in the set area of ​​the hollow support column to be parallel to the first direction in the anti-peeping state, and to control the long axis of the dye liquid crystal in the hollow support column to be perpendicular to the first direction in the display state.

[0009] Optionally, the control electrode includes:

[0010] In the first direction, a first electrode is provided on a side of the hollow support column facing the color filter substrate, and a second electrode is provided on a side of the hollow support column facing the array substrate.

[0011] Optionally, the color film substrate includes a first substrate and a black matrix layer located on a side of the first substrate facing the array substrate, wherein the first electrode is located between the black matrix layer and the first substrate.

[0012] Optionally, on the surface of the first substrate facing the array substrate, the orthographic projection of the first electrode on the first substrate is located within the range of the orthographic projection of the surface of the hollow support column facing the array substrate on the first substrate.

[0013] Optionally, the color filter substrate includes a common electrode, and the array substrate includes a pixel electrode;

[0014] The first electrode and the common electrode are located in the same electrode layer, and / or the second electrode and the pixel electrode are located in the same electrode layer.

[0015] Optionally, the array substrate includes a pixel electrode and a common electrode, and the pixel electrode and the common electrode are located in the same electrode layer;

[0016] The second electrode, the pixel electrode and the common electrode are located in the same electrode layer.

[0017] Optionally, the array substrate includes a pixel electrode and a common electrode, and the pixel electrode and the common electrode are located in different electrode layers;

[0018] The second electrode and the pixel electrode are located in the same electrode layer, or the second electrode and the common electrode are located in the same electrode layer.

[0019] Optionally, the control electrode includes:

[0020] A third electrode and a fourth electrode are provided on opposite sides of the hollow support column in a second direction parallel to the plane where the color filter substrate is located;

[0021] The third electrode is arranged at the end of the hollow support column close to the color filter substrate, and the fourth electrode is arranged at the end of the hollow support column close to the array substrate, and the third electrode and the fourth electrode have no overlapping area in the second direction.

[0022] Optionally, the control electrode includes:

[0023] A fifth electrode and a sixth electrode are provided on opposite sides of the hollow support column in a second direction parallel to the plane where the color filter substrate is located;

[0024] The fifth electrode is arranged at the end of the hollow support column close to the color filter substrate, and the sixth electrode is arranged at the end of the hollow support column close to the array substrate, and the fifth electrode and the sixth electrode have at least a partial overlapping area in the second direction.

[0025] Optionally, the control electrode includes:

[0026] In the first direction, a seventh electrode is provided on a side of the hollow support column facing the color filter substrate, and an eighth electrode is provided on a side of the hollow support column facing the array substrate;

[0027] The seventh electrode also extends to the side wall of the hollow support column in the second direction, and / or the eighth electrode also extends to the side wall of the hollow support column in the second direction, and the extension portion of the seventh electrode and the extension portion of the eighth electrode are arranged on opposite sides of the hollow support column, and the second direction is parallel to the plane where the color film substrate is located.

[0028] Based on the same inventive concept, the present application also provides a display panel, which includes the above-mentioned anti-peeping display module;

[0029] And a backlight module arranged opposite to the anti-peeping display module.

[0030] Based on the same inventive concept, the present application also provides an electronic device, which includes the above-mentioned display panel.

[0031] Compared with the existing technology, the technical solution provided by this application has at least the following advantages:

[0032] The present application provides an anti-peeping display module, a display panel and an electronic device, wherein the anti-peeping display module includes: a color filter substrate and an array substrate arranged relative to each other in a first direction; a liquid crystal layer and a plurality of support columns arranged between the color filter substrate and the array substrate, wherein at least some of the support columns are hollow support columns, and the hollow support columns are filled with a dye liquid crystal layer; a control electrode arranged corresponding to the hollow support column, the control electrode being used to control the long axis of the dye liquid crystal in a set area of ​​the hollow support column to meet a parallel condition with the first direction in the anti-peeping state, and to control the long axis of the dye liquid crystal in the hollow support column to meet a perpendicular condition with the first direction in the display state.

[0033] As can be seen from the above, the technical solution provided by this application, in the anti-peeping state, controls the long axis of the dye liquid crystal in the set area of ​​the hollow support column by controlling the electrodes to meet the parallel condition with the first direction. This is equivalent to forming a light-blocking layer in the side viewing direction in the anti-peeping display module, thereby achieving an anti-peeping effect in the side viewing direction. This application does not require the attachment of an anti-peeping film to the display module. This not only ensures the thickness of the anti-peeping display module is small, meeting the trend of lightweight and thin display panel design, but also avoids the anti-peeping film blocking light transmission and sacrificing the brightness at the front viewing angle, ensuring high brightness of the anti-peeping display module. At the same time, the anti-peeping display module provided by this application can realize the switching control between the anti-peeping state and the display state, expanding the display application scenarios of the anti-peeping display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0035] Figure 1 A partial top view of an anti-peeping display module provided in an embodiment of the present application;

[0036] Figure 2 for Figure 1 A cross-sectional view along the AA' direction;

[0037] Figure 3 A schematic diagram of the light-blocking principle of a dye liquid crystal layer in an anti-peeping state of an anti-peeping display module provided by an embodiment of the present application;

[0038] Figure 4 for Figure 1 Another cross-sectional view along the AA' direction;

[0039] Figure 5 A schematic diagram of the light transmission principle of a dye liquid crystal layer in a display state of an anti-peeping display module provided in an embodiment of the present application;

[0040] Figure 6 A partial top view of another anti-peeping display module provided in an embodiment of the present application;

[0041] Figure 7 for Figure 1 Another cross-sectional view along the AA' direction;

[0042] Figure 8 for Figure 1 Another cross-sectional view along the AA' direction;

[0043] Figure 9 A schematic diagram of a partial stacked structure of an anti-peeping display module provided in an embodiment of the present application;

[0044] Figure 10 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0045] Figure 11 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0046] Figure 12 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0047] Figure 13A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0048] Figure 14 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0049] Figure 15 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0050] Figure 16 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0051] Figure 17 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0052] Figure 18 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0053] Figure 19 A schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application;

[0054] Figure 20 A schematic diagram of a partial stacked structure of a display panel provided in an embodiment of the present application;

[0055] Figure 21 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0056] Reference numerals:

[0057] 1-display panel; 10-anti-peeping display module; 100-color filter substrate; 110-first substrate; 120-black matrix layer; 130-color resist layer; 140-alignment layer; 150, 240-common electrodes; 200-array substrate; 210-pixel electrode; 220-second substrate; 230-transistor array layer; 300-liquid crystal layer; 400-support column; 500-dye liquid crystal layer; 600-control electrode; 610-first electrode; 620-second electrode; 630-third electrode; 640-fourth electrode; 650-fifth electrode; 660-sixth electrode; 670-seventh electrode; 680-eighth electrode; 1000-electronic device; Pi-pixel unit; Y-first direction; X-second direction. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0059] As mentioned in the background, current mobile phones, tablets, and other terminal devices generally use displays with wide viewing angles, providing a great viewing experience when reading or browsing content at these wide viewing angles. However, while users enjoy the screen display, nearby people can also clearly see the screen content, posing a significant risk to personal privacy and confidentiality.

[0060] The current solution on the market to reduce the viewing angle of the display screens of mobile phones, tablets, and other terminal devices is to attach a privacy film. This film acts like a Venetian blind, controlling the direction of light passing through, thereby achieving the need for privacy protection at specific viewing angles. For example, most ATMs (Automated Teller Machines) also have a privacy film attached to the screen surface, reducing the viewing angle of the display screen so that only the operator can clearly see the displayed content, thus achieving the purpose of protecting privacy. Although attaching a privacy film can achieve the purpose of privacy protection for the display screen, it will sacrifice the brightness of the display at the normal viewing angle and increase the thickness of the display screen. To increase the brightness of a display screen with a privacy film at the normal viewing angle, the corresponding backlight drive current is generally increased or the number of corresponding backlight LEDs is increased, which will cause the power consumption of the display screen to increase sharply.

[0061] Based on this, the embodiments of the present application provide an anti-peeping display module, a display panel and an electronic device, which effectively solve the technical problems existing in the prior art. On the basis of realizing the anti-peeping function of the anti-peeping display module, the thickness of the anti-peeping display module is ensured to be relatively small; at the same time, the switching control of the anti-peeping state and the display state of the anti-peeping display module is realized, thereby expanding the display application scenarios of the anti-peeping display module.

[0062] To achieve the above purpose, the technical solutions provided in the embodiments of the present application are as follows, specifically combined with Figures 1 to 21 The technical solutions provided in the embodiments of the present application are described in detail.

[0063] Combine Figures 1 to 5 As shown, Figure 1 A partial top view of an anti-peeping display module provided in an embodiment of the present application. Figure 2 and Figure 4 for Figure 1 The cross-sectional view along the AA' direction, Figure 3 This is a schematic diagram of the light-blocking principle of the dye liquid crystal layer in the anti-peeping state. Figure 5The figure is a schematic diagram illustrating the light transmission principle of the dye liquid crystal layer in the display state. The figure uses four pixel units Pi (pixel units Pi include a pixel electrode 210) of an anti-peeping display module 10 as an example. The anti-peeping display module 10 provided in this embodiment of the present application includes a color filter substrate 100 and an array substrate 200 disposed opposite each other in a first direction Y. A liquid crystal layer 300 and a plurality of support pillars 400 are disposed between the color filter substrate 100 and the array substrate 200. At least some of the support pillars 400 are hollow support pillars 410, each filled with a dye liquid crystal layer 500. Control electrodes 600 are disposed corresponding to the hollow support pillars 410. These control electrodes 600 are used to control the long axis of the dye liquid crystal in a set region of the hollow support pillars 410 to be parallel to the first direction Y in the anti-peeping state, and to control the long axis of the dye liquid crystal in the hollow support pillars 410 to be perpendicular to the first direction Y in the display state.

[0064] Continue as Figure 2 and Figure 3 As shown, Figure 2 and Figure 3The diagram illustrates the twisted state of the dye liquid crystal when the privacy-preventing display module 10 is in the privacy-preventing state. Specifically, in the privacy-preventing state, the electric field generated by the control electrode 600 controls the long axis of the dye liquid crystal to be parallel to the first direction Y. In other words, in the privacy-preventing state, the electric field generated by the control electrode 600 controls the angle between the long axis of the dye liquid crystal and the first direction Y, satisfying the light-blocking and light-absorbing conditions of the dye liquid crystal layer 500 for side-viewing angles. The parallel condition enables the dye liquid crystal layer 500 to block and absorb at least a portion of light directed toward a predetermined region of the hollow support column 410. This parallel condition includes the long axis of the dye liquid crystal being completely parallel to the first direction Y and a first deflection angle between the long axis of the dye liquid crystal and the first direction Y, with the first deflection angle enabling the dye liquid crystal layer 500 to block and absorb at least a portion of light directed toward the predetermined region of the hollow support column 410. When the anti-peeping display module 10 is in the anti-peeping state, the front-viewing light G1 can directly pass through the anti-peeping display module 10 and be emitted directly, allowing the user to clearly observe the display screen of the anti-peeping display module 10 from the front-viewing direction. When the anti-peeping display module 10 is in the anti-peeping state, the side-viewing light G2 and G3 are emitted toward the hollow support column 410, but are blocked and absorbed by the dye liquid crystal layer 500, whose long axis is parallel to the first direction Y. Consequently, the blocked side-viewing light G2 and G3 result in insufficient contrast, preventing the user from observing the display screen from the side-viewing direction, thus achieving the anti-peeping effect of the anti-peeping display module 10. Specifically, taking the side viewing angle light G2 as an example, the side viewing angle light G2 can be decomposed into a light ray G22 in a first direction Y and a light ray G21 in a second direction X. The first direction Y is a direction perpendicular to the plane where the anti-peeping display module 10 is located, and the second direction X is a direction parallel to the plane where the anti-peeping display module 10 is located. The light ray G21 is blocked and absorbed by the dye liquid crystal layer 500, while the light ray G22 can pass through the anti-peeping display module 10 and be emitted. Therefore, on the basis of achieving the anti-peeping effect of the anti-peeping display module 10, the brightness of the anti-peeping display module 10 at a front viewing angle in the anti-peeping state is also improved.

[0065] Continue as Figure 4 and Figure 5 As shown, Figure 4 and Figure 5The figure illustrates the twisted state of the dye liquid crystal when the privacy-preventing display module 10 is in the display state (the display state is the normal display state without privacy protection). Specifically, in the privacy-preventing state, the electric field generated by the control electrode 600 controls the long axis of the dye liquid crystal to be perpendicular to the first direction Y. In other words, in the display state, the electric field generated by the control electrode 600 controls the angle between the long axis of the dye liquid crystal and the first direction Y, satisfying the condition for the dye liquid crystal layer 500 to transmit light from a side viewing angle. The perpendicular condition enables the dye liquid crystal layer 500 to transmit at least a portion of light directed toward a predetermined region of the hollow support column 410. This perpendicular condition includes the long axis of the dye liquid crystal being completely perpendicular to the first direction Y, and the short axis of the dye liquid crystal having a certain deflection angle with the first direction Y, wherein the second deflection angle enables the dye liquid crystal layer 500 to transmit at least a portion of light directed toward the predetermined region of the hollow support column 410. When the anti-peeping display module 10 is in the display state, the front-viewing light ray G1 can directly pass through the anti-peeping display module 10 and exit directly, allowing the user to clearly observe the display screen of the anti-peeping display module 10 from the front-viewing direction. When the anti-peeping display module 10 is in the display state, the side-viewing light rays G2 and G3 are directed toward the hollow support column 410 and can also pass through the dye liquid crystal layer 500 and exit, allowing the user to observe the display screen from the side-viewing direction, thereby achieving the normal display effect of the anti-peeping display module 10 in the non-peeping state. Taking the side-viewing light ray G2 as an example, the side-viewing light ray G2 can be decomposed into a light ray G22 in the first direction Y and a light ray G21 in the second direction X. Light ray G21 can pass through the dye liquid crystal layer 500 and exit, while light ray G22 passes through the anti-peeping display module 10, thereby achieving the normal display effect of the anti-peeping display module 10 in the non-peeping state.

[0066] It can be understood that the technical solution provided by the embodiment of the present application, in the anti-peeping state, controls the long axis of the dye liquid crystal in the set area of ​​the hollow support column 410 by controlling the electrode 600 to meet the parallel condition with the first direction Y, which is equivalent to forming a light-blocking layer in the side viewing direction in the anti-peeping display module 10, thereby achieving an anti-peeping effect in the side viewing direction. The embodiment of the present application does not require the attachment of an anti-peeping film to the display module. This not only ensures the thickness of the anti-peeping display module 10 is relatively small, meeting the trend of lightweight and thin display panel design, but also avoids the anti-peeping film blocking light transmission and sacrificing brightness at the front viewing angle, ensuring high brightness of the anti-peeping display module 10. At the same time, the anti-peeping display module 10 provided by the embodiment of the present application can realize the switching control between the anti-peeping state and the display state, expanding the display application scenarios of the anti-peeping display module 10.

[0067] In some embodiments, the support column 400 provided in the embodiment of the present application is located in the gap area between the pixel units Pi, so as to avoid the support column 400 affecting the pixel aperture ratio of the anti-peeping display module 10 and improve the display brightness of the anti-peeping display module 10. Optionally, the support column 400 (hollow support column 410) provided in the embodiment of the present application can be set as a columnar structure, such as Figure 1 The support column 400 is located in the gap area between the pixel units Pi and has a columnar structure. Figure 6 As shown in FIG. 1 , a partial top view of another anti-peeping display module provided by an embodiment of the present application is shown. The support column 400 provided by the embodiment of the present application can also be a strip-shaped retaining wall structure located in the gap area between the pixel units Pi, and this application does not make specific restrictions on this. In addition, the support column 400 provided by the embodiment of the present application can be as follows on the cross section in the first direction Y: Figure 2 wherein the hollow shape of the hollow support column 410 may be the same as the rectangular shape of the support column 400. Or as Figure 7 Indicated Figure 1 In another cross-sectional view along the AA' direction, the support column 400 can be in a trapezoidal shape in the cross-sectional view along the first direction Y, and the short side of the trapezoidal shape is located on the side facing the array substrate 200; wherein the hollow shape of the hollow support column 410 can be the same as the trapezoidal shape of the support column 400. Or as Figure 8 Indicated Figure 1 In another cross-sectional view along the AA' direction, the support column 400 can be a trapezoidal shape on the cross-sectional view in the first direction Y, and the short side of the trapezoidal shape is located on the side facing the color film substrate 100; the hollow shape of the hollow support column 410 can be a rectangular shape, which is different from the trapezoidal shape of the support column 400, and this application does not make any specific restrictions on this.

[0068] The dye liquid crystal in the dye liquid crystal layer 500 provided in the embodiment of the present application is controlled by the electric field generated by the control electrode 600. The dye liquid crystal can be a positive dye liquid crystal or a negative dye liquid crystal, and it needs to be selected according to the electric field generated by the control electrode 600. If the dye liquid crystal is a positive dye liquid crystal, the long axis direction of the dye liquid crystal is consistent with the direction of the electric field; and when the dye liquid crystal is a negative dye liquid crystal, the short axis direction of the dye liquid crystal is consistent with the direction of the electric field. Regardless of whether the dye liquid crystal is a positive or negative dye liquid crystal, it is sufficient as long as the control electrode 600 controls the long axis of the dye liquid crystal to be parallel to the first direction Y when in the anti-peeping state, and controls the long axis of the dye liquid crystal to be perpendicular to the first direction Y when in the display state. In some embodiments, the control electrode 600 provided in the embodiment of the present application may include a portion provided on the color film substrate 100 side of the hollow support column 410, and a portion provided on the array substrate 200 side of the hollow support column 410. For specific reference Figure 9FIG. 1 is a schematic diagram of a partial stacked structure of an anti-peeping display module provided in an embodiment of the present application. The control electrode 600 provided in this embodiment of the present application includes: a first electrode 610 disposed on the side of the hollow support column 410 facing the color filter substrate 100 in the first direction Y, and a second electrode 620 disposed on the side of the hollow support column 410 facing the array substrate 200. When a driving voltage is applied to the first and second electrodes 610 and 620, an electric field parallel to the first direction Y is generated between the first and second electrodes 610 and 620. Therefore, the dye liquid crystal provided in this embodiment of the present application is a positive dye liquid crystal. That is, when the anti-peeping display module 10 is in the anti-peeping state, the electric field parallel to the first direction Y generated between the first and second electrodes 610 and 620 controls the long axis of the positive dye liquid crystal to align with the direction of the electric field, thereby controlling the long axis of the dye liquid crystal to be parallel to the first direction Y, thereby achieving the anti-peeping effect of the anti-peeping display module 10.

[0069] like Figure 10 FIG. 1 is a schematic diagram of a partial stacked structure of another anti-peeping display module provided in an embodiment of the present application. The color filter substrate 100 provided in this embodiment of the present application includes a first substrate 110 and a black matrix layer 120 located on the side of the first substrate 110 facing the array substrate 200. The black matrix layer 120 includes openings at the pixel units Pi, and the color filter substrate 100 includes a color resist layer 130 disposed corresponding to the openings, and an alignment layer 140 located on the side of the color resist layer 130 facing away from the first substrate 110. The first electrode 610 provided in this embodiment of the present application can be located between the black matrix layer 120 and the first substrate 110. The black matrix layer 120 has a weak electric field shielding effect. Thus, without affecting the electric field generated between the first electrode 610 and the second electrode 620, it can, to a certain extent, reduce the effect of the electric field generated by the first electrode 610 and the second electrode 620 on the liquid crystal molecules in the liquid crystal layer 300, thereby ensuring a high display quality of the anti-peeping display module 10. Optionally, on the surface of the first substrate 110 facing the array substrate 200, the orthographic projection of the first electrode 610 on the first substrate 110 is located within the range of the orthographic projection of the surface of the hollow support column 410 facing the array substrate 200 on the first substrate 110, so as to optimize the occupied area of ​​the first electrode 610, avoid the problem that the area of ​​the first electrode 610 is too large, resulting in an excessively large electric field range, which ultimately affects the twisting of the liquid crystal molecules in the liquid crystal layer 300, and further ensure the high display effect of the anti-peeping display module 10.

[0070] In some embodiments, the anti-peeping display module 10 provided in the embodiment of the present application may be a TN (Twisted Nematic) liquid crystal display module, or a VA (Vertical Alignment) liquid crystal display module, or an IPS (In-Plane Switching) liquid crystal display module, or an FFS (Fringe Field Switching) liquid crystal display module, etc., and the present application does not impose any specific restrictions on this. At least one of the first electrode 610 and the second electrode 620 may be an electrode formed by a separately prepared conductive layer. Or at least one of the first electrode 610 and the second electrode 620 may also be an electrode formed by the original conductive layer in the reused liquid crystal display module; that is, the color film substrate 100 includes a common electrode 150, and the array substrate 200 includes a pixel electrode 210; wherein the first electrode 610 and the common electrode 150 are located in the same electrode layer, and / or the second electrode 620 and the pixel electrode 210 are located in the same electrode layer. For specific reference Figure 11 As shown, it is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application. The color film substrate 100 provided in the embodiment of the present application includes a common electrode 150, and the common electrode 150 can be located between the black matrix layer 120 and the first substrate 110, wherein the first electrode 610 and the common electrode 150 are located in the same electrode layer, and the first electrode 610 is prepared by reusing the electrode layer where the common electrode 150 is located, thereby reducing the number of film layers when preparing the anti-peeping display module 10, simplifying the preparation process and reducing the preparation cost.

[0071] refer to Figure 12 As shown, it is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application. The array substrate 200 provided in the embodiment of the present application includes a second substrate 220, a transistor array layer 230 located on the side of the second substrate 220 facing the color filter substrate 100, and a pixel electrode 210 located on the side of the transistor array layer 230 facing away from the second substrate 220. The second electrode 620 and the pixel electrode 210 are located in the same electrode layer, and the second electrode 620 is prepared by reusing the electrode layer where the pixel electrode 210 is located, thereby reducing the number of film layers in the preparation of the anti-peeping display module 10, simplifying the preparation process and reducing the preparation cost. Figure 11 It shows that the first electrode 610 is prepared by reusing the electrode layer where the common electrode 150 is located, and Figure 12 The second electrode 620 is shown to be prepared by reusing the electrode layer where the pixel electrode 210 is located. In addition, in the anti-peeping display module 10 provided in the embodiment of the present application, the first electrode 610 can be prepared by reusing the electrode layer where the common electrode 150 is located, and the second electrode 620 can be prepared by reusing the electrode layer where the pixel electrode 210 is located, as shown in FIG. Figure 13 Schematic diagram of the partial stacked layers of the anti-peeping display module 10. It should be noted that the first substrate 110, black matrix layer 120, color resist layer 130, alignment layer 140, second substrate 220, and transistor array layer 230 provided in the embodiment of the present application are the same as those in the prior art, so no redundant description is given. In addition, in some other embodiments, the common electrode 150 can also be located on the side of the color resist layer 130 away from the first substrate 110. In this case, the first electrode 610 can also be formed from the same electrode layer as the common electrode 150. This needs to be analyzed specifically according to the actual application. It is sufficient that the first electrode 610 is made of the same electrode layer as the common electrode 150.

[0072] Figures 11 to 13 The common electrode 150 is located on one side of the color filter substrate 100, and the pixel electrode 210 is located on one side of the array substrate 200. In other embodiments, the common electrode 240 and the pixel electrode 210 provided in the embodiment of the present application can also be located on one side of the array substrate 200. Figure 14 As shown, it is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application. The array substrate 200 provided in the embodiment of the present application includes a pixel electrode 210 and a common electrode 240, and the pixel electrode 210 and the common electrode 240 are located in the same electrode layer; wherein, the second electrode 620 is located in the same electrode layer as the pixel electrode 210 and the common electrode 240, and the second electrode 620 is prepared by reusing the electrode layer where the common electrode 240 and the pixel electrode 210 are located, thereby reducing the number of film layers when preparing the anti-peeping display module 10.

[0073] Or as Figure 15 As shown, it is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application. The array substrate 200 provided in the embodiment of the present application includes a pixel electrode 210 and a common electrode 240, and the pixel electrode 210 and the common electrode 240 are located in different electrode layers; an insulating layer 250 is included between the pixel electrode 210 and the common electrode 240, wherein the pixel electrode 210 can be located on the side of the common electrode 240 away from the second substrate 220, wherein the second electrode 620 can be located in the same electrode layer as the pixel electrode 210. It should be noted that the pixel electrode 210 provided in the embodiment of the present application can not only be located on the side of the common electrode 240 away from the second substrate 220, but in some other embodiments, the common electrode 240 can also be located on the side of the pixel electrode 210 away from the second substrate 220. In this case, the common electrode 240 has a hollow corresponding to the pixel electrode 210, so that an electric field is formed between the pixel electrode 210 and the common electrode 220, which can be as follows Figure 16The schematic diagram of the stacked structure of the anti-peeping display module 10 is shown. In addition, the second electrode 620 provided in the embodiment of the present application can not only be located in the same electrode layer as the pixel electrode 210, but in some other embodiments, the second electrode 620 can also be located in the same electrode layer as the common electrode 240. This needs to be specifically designed according to the actual application.

[0074] The above diagram illustrates the related structure of the control electrode 600 including the first electrode 610 and the second electrode 620 located on the two end surface sides of the hollow support column 410 in the first direction Y. On the basis that the control electrode 600 includes the first electrode 610 and the second electrode 620, or on the basis that the control electrode 600 does not include the first electrode 610 and the second electrode 620, the control electrode 600 may also include corresponding electrodes (the electrodes are light-transmitting electrodes, such as electrodes made of materials such as indium tin oxide) arranged on the two side walls of the hollow support column 410 in the second direction X, which can also control the twisting of the dye liquid crystal, thereby realizing the switching of the anti-peeping state and the display state of the anti-peeping display module 10. The following description is made by taking the control electrode 600 that does not include the first electrode 610 and the second electrode 620 as an example. For specific reference Figure 17 , which is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application, the control electrode 600 includes: a third electrode 630 and a fourth electrode 640 arranged on opposite sides of the hollow support column 410 in a second direction X parallel to the plane where the color filter substrate 100 is located; the third electrode 630 is arranged at the end of the hollow support column 410 close to the color filter substrate 100, and the fourth electrode 640 is arranged at the end of the hollow support column 410 close to the array substrate 200, and the third electrode 630 and the fourth electrode 640 have no overlapping area in the second direction X. When a driving voltage is applied to the third and fourth electrodes 630 and 640, an electric field is generated between the third and fourth electrodes 630 and 640, parallel to the second direction X and primarily located in the region S1 between the third and fourth electrodes 630 and 640 in the first direction Y (i.e., the predetermined region of the hollow support pillar 410). Therefore, the dye liquid crystals controlled by the third and fourth electrodes 630 and 640 in the present embodiment are negative dye liquid crystals. That is, when the anti-privacy display module 10 is in the anti-privacy state, the electric field generated between the third and fourth electrodes 630 and 640, parallel to the second direction X, controls the minor axis of the negative dye liquid crystals to align with the direction of the electric field (i.e., the second direction X), while the major axis of the dye liquid crystals aligns with the first direction Y. This ensures that the major axis of the dye liquid crystals is parallel to the first direction Y, thereby achieving the anti-privacy effect of the anti-privacy display module 10.

[0075] refer to Figure 18, which is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application, the control electrode 600 includes: a fifth electrode 650 and a sixth electrode 660 arranged on opposite sides of the hollow support column 410 in a second direction X parallel to the plane where the color filter substrate 100 is located; the fifth electrode 650 is arranged at the end of the hollow support column 410 close to the color filter substrate 100, and the sixth electrode 660 is arranged at the end of the hollow support column 410 close to the array substrate 200, and the fifth electrode 650 and the sixth electrode 660 have at least a partial overlapping area in the second direction X. When a driving voltage is applied to the fifth and sixth electrodes 650 and 660, an electric field is generated between the fifth and sixth electrodes 650 and 660, parallel to the second direction X and primarily located in the overlapping region S2 of the fifth and sixth electrodes 650 and 660 in the second direction X (i.e., the predetermined region of the hollow support pillar 410). Therefore, the dye liquid crystals controlled by the fifth and sixth electrodes 650 and 660 in the present embodiment are negative dye liquid crystals. That is, when the anti-privacy display module 10 is in the anti-privacy state, the electric field generated between the fifth and sixth electrodes 650 and 660, parallel to the second direction X, controls the minor axis of the negative dye liquid crystals to align with the direction of the electric field (i.e., the second direction X), while the major axis of the dye liquid crystals aligns with the first direction Y. This ensures that the major axis of the dye liquid crystals is parallel to the first direction Y, thereby achieving the anti-privacy effect of the anti-privacy display module 10.

[0076] refer to Figure 19, which is a schematic diagram of a partial stacked layer of another anti-peeping display module provided in an embodiment of the present application. The control electrode 600 provided in the embodiment of the present application includes: in the first direction Y, a seventh electrode 670 is arranged on the side of the hollow support column 410 facing the color filter substrate 100, and an eighth electrode 680 is arranged on the side of the hollow support column 410 facing the array substrate 200; the seventh electrode 670 further extends to the side wall of the hollow support column 410 in the second direction X, and / or the eighth electrode 680 further extends to the side wall of the hollow support column 410 in the second direction X, and the extension portion of the seventh electrode 670 and the extension portion of the eighth electrode 680 are arranged on opposite sides of the hollow support column 410, the second direction X is parallel to the plane of the color filter substrate 100, and the second direction X is perpendicular to the first direction Y. Optionally, the extension of the seventh electrode 670 and the extension of the eighth electrode 680 provided in the embodiment of the present application may have no overlapping region in the second direction X, or the extension of the seventh electrode 670 and the extension of the eighth electrode 680 may include at least a partial overlapping region in the second direction X, and this is not specifically limited in this application. By optimizing the shape and area of ​​the seventh electrode 670 and the eighth electrode 680, the electric field generated when the seventh electrode 670 and the eighth electrode 680 apply a driving voltage, and in the anti-privacy state, the long axis of the dye liquid crystal is controlled to be consistent with the first direction Y, thereby controlling the long axis of the dye liquid crystal to be parallel to the first direction Y, thereby achieving the anti-privacy effect of the anti-privacy display module 10.

[0077] It should be noted that the control electrodes 600 illustrated above are only a few of all electrode types applicable to this application, and this application does not impose any specific restrictions on this. The electrode design needs to be based on actual applications. In addition, the two electrodes generating the electric field included in the control electrodes 600 provided in any of the embodiments illustrated above are both located on different sides of the hollow support column 410, such as the first electrode 610 and the second electrode 620 are located on different sides of the hollow support column 410 in the first direction Y, and the third electrode 630 and the fourth electrode 640 are located on different sides of the hollow support column 410 in the second direction X, etc. In some other embodiments, the two electrodes generating an electric field included in the control electrode 600 provided in the embodiment of the present application can also be located on the same side of the hollow support column 410, such as being located on the same side of the hollow support column 410 in the first direction Y. At this time, the two electrodes can generate an electric field parallel to the second direction X, thereby controlling the short axis of the negative dye liquid crystal to be consistent with the direction of the electric field (i.e., the second direction X) in the anti-peeping state, while the long axis of the dye liquid crystal is consistent with the first direction Y, thereby controlling the long axis of the dye liquid crystal to be parallel to the first direction Y, thereby achieving the anti-peeping effect of the anti-peeping display module 10.

[0078] Based on the same inventive concept, the present application also provides a display panel 1. Figure 20 FIG. 1 is a schematic diagram of a partial stacked structure of a display panel provided in an embodiment of the present application. The display panel 1 provided in an embodiment of the present application includes an anti-peeping display module 10 provided in any of the above embodiments; and a backlight module 20 disposed opposite the anti-peeping display module 10. The backlight module 20 provides light for the anti-peeping display module 10, enabling the display panel 1 to display images. The structure of the backlight module 20 is the same as that in the prior art, and therefore, this application will not provide a detailed description thereof.

[0079] Based on the same inventive concept, the present application also provides an electronic device 1000. Figure 21 , which is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, wherein the electronic device 1000 provided in an embodiment of the present application includes the display panel 1 provided in any of the above embodiments. In some embodiments, the electronic device 1000 provided in an embodiment of the present application can be a large or small device such as a mobile terminal, a notebook, a tablet computer, a computer, a wearable device, etc., and this application does not impose any specific restrictions on this.

[0080] In summary, the embodiments of the present application provide an anti-peeping display module, a display panel and an electronic device, wherein the anti-peeping display module includes: a color film substrate and an array substrate arranged relative to each other in a first direction; a liquid crystal layer and a plurality of support columns arranged between the color film substrate and the array substrate, wherein at least some of the support columns are hollow support columns, and the hollow support columns are filled with a dye liquid crystal layer; a control electrode arranged corresponding to the hollow support column, the control electrode being used to control the long axis of the dye liquid crystal in a set area of ​​the hollow support column to meet a parallel condition with the first direction in the anti-peeping state, and to control the long axis of the dye liquid crystal in the hollow support column to meet a perpendicular condition with the first direction in the display state.

[0081] As can be seen from the above, the technical solution provided by the embodiment of the present application, in the anti-peeping state, controls the long axis of the dye liquid crystal in the set area of ​​the hollow support column by controlling the electrodes to meet the parallel condition with the first direction, which is equivalent to forming a light-blocking layer in the side viewing direction in the anti-peeping display module, thereby achieving an anti-peeping effect in the side viewing direction. The embodiment of the present application does not require the attachment of an anti-peeping film to the display module, which not only ensures the thickness of the anti-peeping display module is small, meeting the trend of lightweight and thin display panel design, but also avoids the anti-peeping film blocking light transmission and sacrificing the brightness at the front viewing angle, ensuring high brightness of the anti-peeping display module. At the same time, the anti-peeping display module provided by the embodiment of the present application can realize the switching control between the anti-peeping state and the display state, expanding the display application scenarios of the anti-peeping display module.

[0082] In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply 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 on the present application.

[0083] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise clearly specified.

[0084] In the embodiments of this application, unless otherwise specified or limited, terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections, indirect connections through an intermediate medium, and internal connections between two components or interactions between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0085] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0086] In the embodiments of the present application, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0087] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An anti-peeping display module, characterized in that: include: a color filter substrate and an array substrate arranged opposite to each other in a first direction; A liquid crystal layer and a plurality of support columns are provided between the color filter substrate and the array substrate, wherein at least some of the support columns are hollow support columns, and the hollow support columns are filled with a dye liquid crystal layer; A control electrode is arranged corresponding to the hollow support column, and the control electrode is used to control the long axis of the dye liquid crystal in the set area of ​​the hollow support column to be parallel to the first direction in the anti-peeping state, and to control the long axis of the dye liquid crystal in the hollow support column to be perpendicular to the first direction in the display state.

2. The anti-peeping display module according to claim 1, characterized in that: The control electrode comprises: In the first direction, a first electrode is provided on a side of the hollow support column facing the color filter substrate, and a second electrode is provided on a side of the hollow support column facing the array substrate.

3. The anti-peeping display module according to claim 2, characterized in that: The color filter substrate includes a first substrate and a black matrix layer located on a side of the first substrate facing the array substrate, wherein the first electrode is located between the black matrix layer and the first substrate.

4. The anti-peeping display module according to claim 3, characterized in that: On the surface of the first substrate facing the array substrate, the orthographic projection of the first electrode on the first substrate is located within the range of the orthographic projection of the surface of the hollow support column facing the array substrate on the first substrate.

5. The anti-peeping display module according to claim 2, wherein: The color filter substrate includes a common electrode, and the array substrate includes a pixel electrode; The first electrode and the common electrode are located in the same electrode layer, and / or the second electrode and the pixel electrode are located in the same electrode layer.

6. The anti-peeping display module according to claim 2, characterized in that: The array substrate includes a pixel electrode and a common electrode, and the pixel electrode and the common electrode are located in the same electrode layer; The second electrode, the pixel electrode and the common electrode are located in the same electrode layer.

7. The anti-peeping display module according to claim 2, characterized in that: The array substrate includes a pixel electrode and a common electrode, and the pixel electrode and the common electrode are located in different electrode layers; The second electrode and the pixel electrode are located in the same electrode layer, or the second electrode and the common electrode are located in the same electrode layer.

8. The anti-peeping display module according to any one of claims 1 to 7, characterized in that: The control electrode comprises: A third electrode and a fourth electrode are provided on opposite sides of the hollow support column in a second direction parallel to the plane where the color filter substrate is located; The third electrode is arranged at the end of the hollow support column close to the color filter substrate, and the fourth electrode is arranged at the end of the hollow support column close to the array substrate, and the third electrode and the fourth electrode have no overlapping area in the second direction.

9. The anti-peeping display module according to any one of claims 1 to 7, characterized in that: The control electrode comprises: A fifth electrode and a sixth electrode are provided on opposite sides of the hollow support column in a second direction parallel to the plane where the color filter substrate is located; The fifth electrode is arranged at the end of the hollow support column close to the color filter substrate, and the sixth electrode is arranged at the end of the hollow support column close to the array substrate, and the fifth electrode and the sixth electrode have at least a partial overlapping area in the second direction.

10. The anti-peeping display module according to claim 1, characterized in that: The control electrode comprises: In the first direction, a seventh electrode is provided on a side of the hollow support column facing the color filter substrate, and an eighth electrode is provided on a side of the hollow support column facing the array substrate; The seventh electrode also extends to the side wall of the hollow support column in the second direction, and / or the eighth electrode also extends to the side wall of the hollow support column in the second direction, and the extension portion of the seventh electrode and the extension portion of the eighth electrode are arranged on opposite sides of the hollow support column, and the second direction is parallel to the plane where the color film substrate is located.

11. A display panel, characterized in that: The display panel comprises the anti-peeping display module according to any one of claims 1 to 10; And a backlight module arranged opposite to the anti-peeping display module.

12. An electronic device, characterized in that: The electronic device includes the display panel according to claim 11.

Images