Touch peep-proof assembly, preparation method of touch peep-proof assembly and display module

Abstract

The embodiment of the invention provides a touch peep-proof assembly, a preparation method of the touch peep-proof assembly and a display module, the touch peep-proof assembly comprises a touch layer and a peep-proof layer, the touch layer is used for achieving the touch function of the display module, and the touch layer comprises a bridging electrode touch layer used for achieving touch display. The peep-proof layer is used for switching light-emitting visual angles according to different application scenes, and the peep-proof layer comprises a third electrode, an electrochromic layer and a fourth electrode which are sequentially arranged in a stacked mode. The electrochromic layer is used for achieving switching of the light-emitting visual angles by changing the light transmittance. The third electrode and the bridging electrode layer are arranged in the same layer and are mutually independent, so that the third electrode and the bridging electrode can be prepared in the same process, and the process steps are saved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a touch-screen anti-peeping component, a method for preparing the touch-screen anti-peeping component, and a display module. Background Art

[0002] Organic Light-Emitting Diode (OLED) is an active light-emitting device. Compared with the traditional liquid crystal display (LCD) display method, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer and a glass substrate. When an electric current passes through, the organic material will emit light. Therefore, OLED display panels can significantly save electricity, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a larger viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCD, and are one of the most popular technologies in flat-panel display technology. Summary of the invention

[0003] The embodiments of the present application provide a touch anti-peeping component, a method for preparing the touch anti-peeping component, and a display module, aiming to simplify the process steps of the touch anti-peeping component.

[0004] An embodiment of the first aspect of the present application provides a touch anti-peeping component, which includes: a touch layer, including a bridging electrode; an anti-peeping layer, including a third electrode, an electrochromic layer and a fourth electrode stacked in sequence, and the third electrode and the bridging electrode are in the same layer and are independently arranged.

[0005] According to the implementation of the first aspect of the present application, the touch layer also includes a first touch electrode, a second touch electrode and an insulating layer, the first touch electrode is located on the side of the insulating layer away from the bridging electrode, and the first touch electrode and the second touch electrode are in the same layer and are independently arranged.

[0006] According to any of the aforementioned embodiments of the first aspect of the present application, the third electrode is located between the electrochromic layer and the insulating layer.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the spacing between the bridging electrode and the third electrode is not less than 5 μm.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the spacing between the bridging electrode and the third electrode is not less than 10 μm.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, in the stacking direction, a spacing between the third electrode and the first touch electrode is not less than 2 μm.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the orthographic projection of the third electrode on the electrochromic layer does not overlap with the orthographic projection of the first touch electrode on the electrochromic layer.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the electrochromic layer includes a transparent portion and an electrochromic portion, and the orthographic projection of the third electrode on the insulating layer, the orthographic projection of the electrochromic portion on the insulating layer, and the orthographic projection of the fourth electrode on the insulating layer at least partially overlap.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the electrochromic portion is annular and encloses a hollow area, a plurality of electrochromic portions are arranged at intervals, gaps are provided between adjacent portions, and the touch control is located in the gaps.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the transparent portion includes a first transparent portion and a second transparent portion, the electrochromic portion is arranged around the first transparent portion, and the second transparent portion is spaced apart from the first transparent portion through the electrochromic portion.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the electrochromic portion and the transparent portion are an integrally formed structure, the third electrode and / or the fourth electrode is an annular layer having a first grid hole exposing the first transparent portion, and the fourth electrode has a second grid hole exposing the first transparent portion.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth electrode further has a third grid hole that exposes the second transparent portion.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the transparent portion has an opening disposed between the first transparent portion and the second transparent portion, and the electrochromic portion fills the opening.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the third electrode includes a third electrode, an orthographic projection of the third electrode on the electrochromic layer at least partially overlaps with the electrochromic portion, and the third electrode also satisfies one of the following conditions: the orthographic projection of the third electrode on the electrochromic layer does not overlap with the first transparent portion and the second transparent portion; the third electrode is a transparent electrode, and the orthographic projection of the third electrode on the electrochromic layer also at least partially overlaps with the first transparent portion and / or the second transparent portion; the third electrode is a metal electrode, and the orthographic projection of the third electrode on the electrochromic layer also at least partially overlaps with the second transparent portion, and the orthographic projection of the third electrode on the electrochromic layer does not overlap with the first transparent portion.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the third electrode has a first grid hole that exposes the first transparent portion.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the transparent part includes insulating material.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the transparent part includes a transparent material.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth electrode includes a fourth electrode, an orthographic projection of the fourth electrode on the electrochromic layer at least partially overlaps with the electrochromic portion, and the fourth electrode also satisfies one of the following conditions: the orthographic projection of the fourth electrode on the electrochromic layer does not overlap with the first transparent portion and the second transparent portion; the fourth electrode is a transparent electrode, and the orthographic projection of the fourth electrode on the electrochromic layer also at least partially overlaps with the first transparent portion and / or the second transparent portion; the fourth electrode is a metal electrode, and the orthographic projection of the fourth electrode on the electrochromic layer also at least partially overlaps with the second transparent portion, and the orthographic projection of the fourth electrode on the electrochromic layer does not overlap with the first transparent portion.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth electrode has a second grid of holes that expose the first transparent portion.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the fourth electrode has a third grid hole that exposes the second transparent portion.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the touch-screen privacy protection component further includes a buffer layer, and the fourth electrode layer is stacked between the electrochromic layer and the buffer layer; and / or, the touch-screen privacy protection component further includes a protective layer, and the first touch electrode is stacked between the insulating layer and the protective layer.

[0025] According to the implementation manner of the second aspect of the present application, there is also a method for preparing a touch-screen anti-peeping component, comprising the following steps: forming a buffer layer; forming a fourth electrode on one side of the buffer layer; forming an electrochromic layer on a side of the fourth electrode away from the buffer layer; forming a third electrode and a bridging electrode on a side of the electrochromic layer away from the fourth electrode, wherein the third electrode and the bridging electrode are in the same layer and are independently arranged.

[0026] According to an implementation of the second aspect of the present application, the step of forming a third electrode and a bridging electrode on the side of the electrochromic layer away from the fourth electrode includes: forming an electrode blank layer on the side of the electrochromic layer away from the fourth electrode; and patterning the electrode blank layer to form a bridging electrode and a third electrode.

[0027] According to any of the aforementioned embodiments of the second aspect of the present application, the electrochromic layer includes a transparent portion and an electrochromic portion.

[0028] According to any of the aforementioned embodiments of the second aspect of the present application, a third electrode and a bridging electrode are formed on a side of the electrochromic layer away from the fourth electrode, and the step of the third electrode and the bridging electrode being in the same layer and independently arranged includes: forming an insulating layer on a side of the third electrode and the bridging electrode away from the electrochromic layer, the orthographic projection of the third electrode on the insulating layer, the orthographic projection of the electrochromic portion on the insulating layer, and the orthographic projection of the fourth electrode on the insulating layer at least partially overlap; forming a first touch electrode and a second touch electrode on a side of the insulating layer away from the third electrode.

[0029] According to any of the aforementioned embodiments of the second aspect of the present application, after the step of forming the first touch electrode and the second touch electrode on the side of the insulating layer away from the third electrode, the step further includes: forming a protective layer on the side of the first touch electrode away from the insulating layer.

[0030] According to an implementation scheme of the third aspect of the present application, a display module includes: a display panel, having a display surface, the display surface having a non-pixel area and a plurality of pixel areas; a touch anti-peeping component, arranged on the display surface; wherein the touch anti-peeping component is the touch anti-peeping component as described above, the electrochromic layer includes a transparent portion and an electrochromic portion, and a fourth electrode layer is stacked between the display surface and the electrochromic layer, an orthographic projection of the electrochromic portion on the display surface at least partially overlaps with the non-pixel area, and an orthographic projection of the transparent portion on the display surface at least partially overlaps with both the pixel area and the non-pixel area.

[0031] In the touch anti-peeping component, the preparation method of the touch anti-peeping component and the display module of the present application, the touch anti-peeping component includes a touch layer and an anti-peeping layer. The touch layer is used to realize the touch function of the display module, and the touch layer includes a bridging electrode touch layer for realizing touch display. The anti-peeping layer is used to switch the light output angle according to different application scenarios. The anti-peeping layer includes a third electrode, an electrochromic layer and a fourth electrode electrochromic layer stacked in sequence, which is used to realize the switching of the light output angle by changing the transmittance. The third electrode and the bridging electrode layer are in the same layer and are independently arranged, so that the third electrode and the bridging electrode can be prepared in the same process, saving process steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0033] Figure 1 is a top view of a display module provided in an embodiment of the present application;

[0034] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0035] Figure 3It is a structural schematic diagram of a touch-screen anti-peeping component provided by an embodiment of the first aspect of the present application;

[0036] Figure 4 It is a structural schematic diagram of another touch-screen anti-peeping component provided by an embodiment of the first aspect of the present application;

[0037] Figure 5 It is one of the top views of a touch-screen privacy protection component provided by the embodiment of the first aspect of the present application;

[0038] Figure 6 This is a second top view of a touch-screen privacy protection component provided by an embodiment of the first aspect of the present application;

[0039] Figure 7 yes Figure 5 Sectional view at the middle BB;

[0040] Figure 8 This is a third top view of a touch-screen anti-peeping component provided by an embodiment of the first aspect of the present application;

[0041] Fig. 9 yes Figure 8 Sectional view at CC;

[0042] Fig.10 It is a structural schematic diagram of another touch-screen anti-peeping component provided by the embodiment of the first aspect of the present application;

[0043] Fig.11 This is a fourth top view of a touch-screen privacy protection component provided by an embodiment of the first aspect of the present application;

[0044] Fig.12 This is a fifth top view of a touch-screen privacy protection component provided by an embodiment of the first aspect of the present application;

[0045] Fig.13 Fig.12 Sectional view at DD in the middle;

[0046] Fig.14 This is a sixth top view of a touch-screen anti-peeping component provided by an embodiment of the first aspect of the present application;

[0047] Fig.15 It is one of the flow charts of a method for preparing a touch-screen anti-peeping component provided in an embodiment of the second aspect of the present application;

[0048] Fig.16 It is one of the structural schematic diagrams of a touch-screen anti-peeping component provided in the second aspect of the present application;

[0049] Fig.17 This is a second structural diagram of a touch-screen anti-peeping component provided by an embodiment of the second aspect of the present application;

[0050] Fig.18 This is a third structural diagram of a touch-screen anti-peeping component provided by an embodiment of the second aspect of the present application;

[0051] Fig.19 This is a second flow chart of a method for preparing a touch-screen anti-peeping component provided in an embodiment of the second aspect of the present application;

[0052] Fig. 20 It is a third flow chart of a method for preparing a touch-screen anti-peeping component provided in an embodiment of the second aspect of the present application;

[0053] Fig.21 This is a fourth flow chart of a method for preparing a touch-screen anti-peeping component provided in an embodiment of the second aspect of the present application;

[0054] Fig. 22 is a top view of a display module provided by an embodiment of the third aspect of the present application;

[0055] Fig.23 yes Fig. 22 Cross-sectional view at EE in the middle.

[0056] Description of reference numerals:

[0057] 000, touch anti-peeping component;

[0058] 100, touch layer; 110, first touch electrode; 120, insulating layer; 130, second touch electrode; 140, bridge electrode;

[0059] 200, anti-peeping layer; 210, third electrode; 212, first mesh hole; 220, electrochromic layer; 221, electrochromic portion; 221a, hollow area; 221b, gap; 222, transparent portion; 222a, first transparent portion; 222b, second transparent portion; 222c, opening; 222d, through hole; 230, fourth electrode; 232, second mesh hole; 233, third mesh hole;

[0060] 310, buffer layer; 320, protective layer;

[0061] 400, display module; 410, display panel; 420, display surface; 421, pixel area; 422, non-pixel area;

[0062] 500, substrate; 510, array layer;

[0063] 600, luminous layer;

[0064] 700, encapsulation layer;

[0065] 800, polarizer; 810, optical adhesive;

[0066] 900. Cover plate. DETAILED DESCRIPTION

[0067] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0068] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0070] Organic electroluminescent devices are currently the mainstream display products used in smart display terminals because of their many advantages such as self-luminescence, high brightness, high contrast, high color gamut, fast response speed, wide viewing angle, low power consumption and flexible display.

[0071] With the popularity of portable devices such as smartphones and tablets, people are paying more and more attention to personal privacy and security while enjoying the convenient life brought by technology. Therefore, in order to prevent information leakage, the development of OLED display screens with anti-peeping functions has become a research hotspot in recent years. Since OLED display products need to have screen sharing display state / anti-peeping display state at the same time, but existing OLED display products with anti-peeping functions usually only have anti-peeping display state (static anti-peeping), it is impossible to dynamically switch between the shared display state / anti-peeping display state in real time according to different application scenarios (dynamic anti-peeping). In order to solve the above technical problems, the present application is proposed. In order to better understand the present application, the following is a summary of the present application. Figures 1 to 21 A touch-screen privacy protection component and a method for preparing the touch-screen privacy protection component according to an embodiment of the present application are described in detail.

[0072] Please also read Figures 1 to 7 The embodiment of the first aspect of the present application provides a touch anti-peeping component 000, which includes a touch layer 100 and an anti-peeping layer 200. The touch layer 100 includes a bridging electrode 140. The anti-peeping layer 200 includes a third electrode 210, an electrochromic layer 220, and a fourth electrode 230 stacked in sequence, and the third electrode 210 and the bridging electrode 140 are in the same layer and are independently arranged.

[0073] In the touch anti-peeping component 000 provided in the first aspect of the present application, the touch anti-peeping component 000 includes a touch layer 100 and an anti-peeping layer 200. The touch layer 100 is used to realize the touch function of the display module 400, and the touch layer 100 includes a bridging electrode 140. The anti-peeping layer 200 is used to switch the light output angle according to different application scenarios. The anti-peeping layer 200 includes a third electrode 210, an electrochromic layer 220 and a fourth electrode 230 stacked in sequence. The third electrode 210 and the bridging electrode 140 are in the same layer and are independently arranged, so that the third electrode 210 and the bridging electrode 140 can be prepared in the same process, saving process steps.

[0074] In some optional embodiments, the touch layer 100 further includes a first touch electrode 110, a second touch electrode 130 and an insulating layer 120, the first touch electrode 110 is located on a side of the insulating layer 120 away from the bridging electrode 140, and the first touch electrode 110 and the bridging electrode 140 are in the same layer and are independently arranged.

[0075] In these optional embodiments, the bridge electrode 140 is used to connect two adjacent first touch electrodes 110 to improve the problem of signal crosstalk.

[0076] Optionally, the spacing between the bridging electrode 140 and the third electrode 210 is not less than 5 μm. In the extension direction of the touch anti-peeping component 000, the distance between the bridging electrode 140 and the third electrode 210 can be 5 μm, 6 μm, 8 μm, 9 μm, or 10 μm, which can improve the problem of signal crosstalk caused by the small spacing between the bridging electrode 140 and the third electrode 210.

[0077] Optionally, the spacing between the bridging electrode 140 and the third electrode 210 is not less than 10 μm, and the spacing between the bridging electrode 140 and the third electrode 210 can be 10 μm, 11 μm, 12 μm, 13 μm, or 14 μm, which can further improve the problem of signal crosstalk caused by the small spacing between the bridging electrode 140 and the third electrode 210.

[0078] Optionally, in the stacking direction, the spacing between the third electrode 210 and the first touch electrode 110 is not less than 2 μm, and the spacing between the third electrode 210 and the first touch electrode 110 can be 2 μm, 3 μm, 4 μm, 5 μm, or 6 μm, which can improve the problem of signal crosstalk caused by the small distance between the third electrode 210 and the first touch electrode 110.

[0079] Optionally, the orthographic projection of the third electrode 210 on the electrochromic layer 220 does not overlap with the orthographic projection of the first touch electrode 110 on the electrochromic layer 220, thereby reducing the possibility of crosstalk between the first touch electrode 110 and the third electrode 210, affecting the transmittance change of the electrochromic portion 221 and thus affecting the anti-peeping effect.

[0080] In some optional embodiments, the electrochromic layer 220 includes a transparent portion 222 and an electrochromic portion 221, and the orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic portion 221 on the insulating layer 120, and the orthographic projection of the fourth electrode 230 on the insulating layer 120 at least partially overlap.

[0081] In these optional embodiments, the electrochromic layer 220 includes a transparent portion 222 and an electrochromic portion 221, the transparent portion 222 is used to emit light, and the electrochromic portion 221 is used to switch the light output angle by changing the transmittance. The orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic portion 221 on the insulating layer 120, and the orthographic projection of the fourth electrode 230 on the insulating layer 120 at least partially overlap, and the overlapping portion of the third electrode 210 and the fourth electrode 230 can form an electric field, and the transmittance of the electrochromic portion 221 can be changed by controlling the voltage difference between the third electrode 210 and the fourth electrode 230. For example, when the third electrode 210 and the fourth electrode 230 are energized, the transmittance of the electrochromic portion 221 can be reduced, which can block the light from continuing to propagate, thereby reducing the light output angle and achieving active peeping protection. When the third electrode 210 and the fourth electrode 230 are not powered, the light transmittance of the electrochromic portion 221 can be increased, thereby increasing the light output angle. The embodiment of the present application can dynamically switch the light output angle in real time according to the application scenario, so that the display panel 410 can be switched between the shared display state / the anti-peeping display state. In the anti-peeping display state, the electrochromic layer 220 blocks light at a larger angle, thereby improving the anti-peeping effect.

[0082] Optionally, the third electrode 210 is located between the electrochromic layer 220 and the insulating layer 120, which can increase the distance from the electrochromic layer 220 to the display panel 410. In the anti-peeping display state, the electrochromic layer 220 has a larger viewing angle for blocking light and a better anti-peeping effect.

[0083] Optionally, the display panel 410 includes a shared display state and an anti-peeping display state. In the shared display state, the voltage difference between the third electrode 210 and the fourth electrode 230 can be 0, the light transmittance of the electrochromic portion 221 is maximum, and the light can be emitted through the electrochromic portion 221 without being blocked. In the anti-peeping display state, the third electrode 210 and the fourth electrode 230 are energized, and the light transmittance of the electrochromic portion 221 is reduced, thereby blocking the side light of the display panel 410 from continuing to propagate, so that the display panel 410 is in a narrow viewing angle mode for anti-peeping.

[0084] Optionally, the touch anti-peeping component 000 also includes a controller, and the user can adjust the voltage between the third electrode 210 and the fourth electrode 230 through the controller as needed to switch the light output viewing angle, thereby switching the display panel 410 between the shared display state and the anti-peeping display state.

[0085] Optional, such as Figure 2 As shown, the electrochromic portion 221 is ring-shaped and encloses a hollow area 221a, which can increase the light-transmitting area and improve the display effect under the shared display effect. The multiple electrochromic portions 221 are arranged at intervals to increase the anti-peeping effect in the anti-peeping state and ensure the consistency of the display.

[0086] Optionally, the second touch electrode 130 is located in the gap 221b between adjacent electrochromic parts 221, and the second touch electrode 130 and the third electrode 210 are arranged in the same layer, which can reduce the thickness of the touch anti-peeping component 000 and improve its lightness and thinness. Among them, "the second touch electrode 130 is located in the gap 221b between adjacent electrochromic parts 221" means that along the thickness direction of the touch anti-peeping component 000, the second touch electrode 130 is located between adjacent electrochromic parts 221.

[0087] Optional, such as Figure 1 and Figure 2 As shown, the transparent portion 222 may include a first transparent portion 222a and a second transparent portion 222b, the electrochromic portion 221 is disposed around the first transparent portion 222a, and the second transparent portion 222b is disposed at a distance from the first transparent portion 222a through the electrochromic portion 221. This allows light to better pass through the transparent portion 222, thereby increasing light transmittance.

[0088] In some optional embodiments, such as Figures 4 to 6 As shown, the electrochromic portion 221 and the transparent portion 222 are an integrally formed structure, and the third electrode 210 and / or the fourth electrode 230 are ring-shaped.

[0089] In these optional embodiments, the electrochromic portion 221 and the transparent portion 222 are integrally formed, which simplifies the manufacturing process. The third electrode 210 and / or the fourth electrode 230 are ring-shaped, which can increase the light transmission area, improve the shielding and reflection of the third electrode 210 and / or the fourth electrode 230 on the light, and improve the light transmittance.

[0090] In some optional embodiments, such as Figure 2 As shown, the transparent portion 222 has an opening 222 c disposed between the first transparent portion 222 a and the second transparent portion 222 b , and the electrochromic portion 221 is located in the opening 222 c .

[0091] In these optional embodiments, the electrochromic portion 221 and the transparent portion 222 can be manufactured separately, and the transparent portion 222 has an opening 222c arranged between the first transparent portion 222a and the second transparent portion 222b, and the electrochromic portion 221 is located at the opening 222c. The area of ​​the electrochromic portion 221 can be controlled by the size of the opening 222c, thereby controlling the shading area in the anti-peeping mode.

[0092] Optionally, the material of the first transparent portion 222a and the second transparent portion 222b may be the same. Optionally, the material of the transparent portion 222 may be the material of the pixel definition layer, such as at least one of silicon oxide, silicon nitride, metal oxide, and organic material. The above material is simple, and can be patterned by exposure and development, and then the opening 222c is made by dry etching process, and the electrochromic portion 221 is set in the opening 222c, and the size of the electrochromic portion 221 is controlled by controlling the size of the opening 222c.

[0093] Optionally, the material of the transparent portion 222 includes an insulating material. Optionally, the material of the transparent portion 222 includes a transparent material. Figure 7 As shown, the material of the transparent portion 222 may include at least one of silicon nitride, silicon oxide and metal oxide. It may be patterned by exposure and development, and then a through hole 222d may be made by a dry etching process. The electrochromic portion 221 may be arranged in the through hole 222d, and the size of the electrochromic portion 221 may be controlled by controlling the size of the through hole 222d.

[0094] Optional, such as Figure 4 and Figure 7 As shown, the orthographic projection of the third electrode 210 on the electrochromic layer 220 does not overlap with the first transparent portion 222a and the second transparent portion 222b, and the third electrode 210 does not block the first transparent portion 222a and the second transparent portion 222b, thereby improving the light transmittance of the touch anti-peeping component 000. This structure does not limit the material of the third electrode 210. For example, the third electrode 210 can be a transparent electrode or a metal electrode, and the third electrode 210 does not block the first transparent portion 222a and the second transparent portion 222b.

[0095] Optional, such as Figures 8 to 10 As shown, the third electrode 210 may be a transparent electrode, and the orthographic projection of the third electrode 210 on the electrochromic layer 220 at least partially overlaps with the first transparent portion 222a and / or the second transparent portion 222b. Figure 8 and Fig. 9 As shown, the third electrode 210 can completely cover the first transparent portion 222a and partially cover the second transparent portion 222b, so as to reduce the difficulty of preparation without affecting light transmission. Figure 2 and Fig.10 As shown, the third electrode 210 may cover a portion of the first transparent portion 222a and a portion of the second transparent portion 222b.

[0096] Optionally, the third electrode 210 may also be a metal electrode, such as Figure 4 and Figure 7As shown, the orthographic projection of the third electrode 210 on the electrochromic layer 220 at least partially overlaps with the second transparent portion 222b, and the orthographic projection of the third electrode 210 on the electrochromic layer 220 does not overlap with the first transparent portion 222a, so as to reduce the shielding of the third electrode 210 on the light passing through the first transparent portion 222a and improve the transmittance of the shared display state.

[0097] Optional, such as Figure 2 and Figure 5 As shown, the third electrode 210 is provided with a first mesh hole 212 that exposes the first transparent portion 222a, which can improve light transmittance. For example, when the third electrode 210 is a metal electrode, light can be emitted through the first mesh hole 212 without being blocked. Or, as Fig.10 As shown, when the third electrode 210 can be a transparent electrode, the third electrode 210 can also be provided with a first grid hole 212 when covering part of the first transparent portion 222a, so as to reduce the reflectivity of the third electrode 210 to light and further improve the light transmittance. Optionally, the configuration of the third electrode 210 is not limited, and is specifically determined according to the material and process flow of the third electrode 210.

[0098] In some optional embodiments, such as Figure 6 and Figure 7 As shown, the orthographic projection of the fourth electrode 230 on the electrochromic layer 220 does not overlap with the first transparent portion 222a and the second transparent portion 222b.

[0099] In these optional embodiments, the fourth electrode 230 will not block the light passing through the first transparent portion 222a and the second transparent portion 222b, thereby affecting the light transmittance. This structure does not limit the material of the fourth electrode 230. For example, the fourth electrode 230 can be a transparent electrode or a metal electrode. The fourth electrode 230 will not block the light passing through the first transparent portion 222a and the second transparent portion 222b, thereby improving the light transmittance of the touch anti-peeping component 000.

[0100] Optionally, the fourth electrode 230 may be a transparent electrode, and the orthographic projection of the fourth electrode 230 on the electrochromic layer 220 also at least partially overlaps with the first transparent portion 222a and / or the second transparent portion 222b. Fig. 9 and Fig.11 As shown, the fourth electrode 230 can completely cover the first transparent portion 222a and partially cover the second transparent portion 222b, so as to reduce the difficulty of manufacturing without affecting light transmission. Fig.10 As shown, the fourth electrode 230 may cover a portion of the first transparent portion 222a and a portion of the second transparent portion 222b. Fig.12 and Fig.13As shown, the fourth electrode 230 can be provided as a whole layer, and the fourth electrode 230 can cover the entire first transparent portion 222a and the second transparent portion 222b, thereby ensuring light transmittance and simplifying the process steps.

[0101] Optionally, the fourth electrode 230 may be a metal electrode, such as Figure 6 and Figure 7 As shown, the orthographic projection of the fourth electrode 230 on the electrochromic layer 220 also at least partially overlaps with the second transparent portion 222b, and the orthographic projection of the fourth electrode 230 on the electrochromic layer 220 does not overlap with the first transparent portion 222a, so as to reduce the shielding of the fourth electrode 230 on the light passing through the first transparent portion 222a and improve the transmittance of the shared display state.

[0102] Optional, such as Figure 2 and Fig.14 As shown, the fourth electrode 230 has a second grid hole 232 that exposes the first transparent portion 222a, which can improve the light transmittance. For example, when the fourth electrode 230 is a metal electrode, the fourth electrode 230 can be in a grid shape, and light can be emitted through the second grid hole 232 without being blocked. Alternatively, when the fourth electrode 230 can be a transparent electrode, the second grid hole 232 can also be provided when the fourth electrode 230 covers a portion of the first transparent portion 222a, so as to reduce the reflectivity of the fourth electrode 230 to light and further improve the light transmittance.

[0103] Optionally, the fourth electrode 230 has a third grid hole 233 that exposes the second transparent portion 222 b , and light can be emitted through the third grid hole 233 without being blocked, thereby further improving the light transmittance of the touch-screen anti-peeping component 000 .

[0104] Optionally, the configuration of the fourth electrode 230 is not limited, and specifically depends on the material and process flow of the fourth electrode 230 .

[0105] Optionally, the material of the third electrode 210 and / or the fourth electrode 230 includes at least one of copper, aluminum, molybdenum, titanium, silver, gold, nickel, chromium, iron, indium, gallium, TiAlTi, ITO / Ag / ITO, CuNi, and MoAlMo, and the above materials are easy to obtain and have good conductivity.

[0106] In some optional embodiments, such as Figure 2 As shown, the touch-screen privacy protection component 000 further includes a buffer layer 310 , the fourth electrode 230 is stacked between the electrochromic layer 220 and the buffer layer 310 , and / or the touch-screen privacy protection component 000 further includes a protective layer 320 , the first touch electrode 110 is stacked between the insulating layer 120 and the protective layer 320 .

[0107] In these optional embodiments, both the buffer layer 310 and the protective layer 320 can protect the touch-control anti-peeping component 000 .

[0108] Optionally, the material of the insulating layer 120 and / or the protective layer 320 includes at least one of SiNx, SiOx, and an organic material, and the above materials are easily available and convenient to prepare.

[0109] Optionally, the insulating layer 120 and the protective layer 320 may be made of the same material, so that the insulating layer 120 and the protective layer 320 can be prepared using the same equipment, thereby simplifying the preparation process.

[0110] Optionally, the material of the buffer layer 310 includes at least one of silicon nitride, silicon oxide, a-Si, and organic material. The above materials are easy to obtain and convenient to prepare.

[0111] The second aspect of the present application provides a method for preparing a touch-screen anti-peeping component 000, such as Fig.15 As shown, the following steps are included:

[0112] Step S100: Fig.16 As shown, a buffer layer 310 is formed.

[0113] Step S200 : forming a fourth electrode 2300 on one side of the buffer layer 310 .

[0114] Step S300: Fig.17 As shown, the electrochromic layer 220 is formed on the side of the fourth electrode 230 facing away from the buffer layer 310 .

[0115] Step S400: Fig.18 As shown, the third electrode 210 and the bridging electrode 140 are formed on the side of the electrochromic layer 220 away from the fourth electrode 230 , and the third electrode 210 and the bridging electrode 140 are in the same layer and are independently arranged.

[0116] In these optional embodiments, the buffer layer 310 is formed by step S100, the fourth electrode 230 is formed by step S200, the electrochromic layer 220 is formed by step S300, and the third electrode 210 and the bridging electrode 140 are formed in the same layer and independently of each other by step S400. In the touch-screen anti-peeping component 000 manufactured by the steps of the embodiment of the present application, the third electrode and the bridging electrode are in the same layer and independently of each other, so that the third electrode and the bridging electrode can be prepared in the same process, saving process steps.

[0117] In some optional embodiments, such as Fig.19 As shown, step S400 also includes:

[0118] Step S410 : forming an electrode blank layer on a side of the electrochromic layer 220 away from the fourth electrode 230 .

[0119] Step S420: Fig.18 As shown, the electrode green layer is patterned to form the bridge electrode 140 and the third electrode 210 .

[0120] In these optional embodiments, through step S410 and step S420, the third electrode 210 and the bridging electrode 140 can be prepared in the same process, saving process steps.

[0121] Optionally, the electrochromic layer 220 includes a transparent portion 222 and an electrochromic portion 221 .

[0122] Optional, such as Fig. 20 As shown, after step S400, the following steps are also included:

[0123] Step S500: forming an insulating layer 120 on the side of the third electrode 210 and the bridging electrode 140 facing away from the electrochromic layer 220, wherein the orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic portion 221 on the insulating layer 120 and the orthographic projection of the fourth electrode 230 on the insulating layer 120 at least partially overlap.

[0124] Step S600: Figure 2 As shown, the first touch electrode 110 and the second touch electrode 130 are formed on a side of the insulating layer 120 away from the third electrode 210 .

[0125] Through step S500, the orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic part 221 on the insulating layer 120, and the orthographic projection of the fourth electrode 230 on the insulating layer 120 are at least partially overlapped. Through step S600, the first touch electrode 110 and the second touch electrode 130 are formed. In the touch anti-peeping component 000 manufactured by the steps of the embodiment of the present application, the orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic part 221 on the insulating layer 120, and the orthographic projection of the fourth electrode 230 on the insulating layer 120 are at least partially overlapped, and the overlapping part of the third electrode 210 and the fourth electrode 230 can form an electric field, and the transmittance of the electrochromic part 221 can be changed by controlling the voltage difference between the third electrode 210 and the fourth electrode 230. The light emission viewing angle can be switched dynamically in real time according to the application scenario, so that the display module 400 can be switched between the shared display state / anti-peeping display state, thereby improving the anti-peeping effect.

[0126] Optional, such as Fig.21 As shown, after step S600, step S610 is also included: Figure 2As shown, a protection layer 320 is formed on a side of the first touch electrode 110 away from the insulating layer 120 , and the protection layer 320 can provide protection for the touch anti-peeping component 000 .

[0127] The third aspect of the present application also provides a display module 400, such as Figure 2 and Fig. 22 As shown, the display module 400 includes a display panel 410 and a touch peephole component 000. The display panel 410 has a display surface 420, and the display surface 420 has a non-pixel area 422 and a plurality of pixel areas 421. The touch peephole component 000 is disposed on the display surface 420. Among them, the touch peephole component 000 is any touch peephole component 000 in the plurality of embodiments described above, the electrochromic layer 220 includes a transparent portion 222 and an electrochromic portion 221, and the fourth electrode 230 is stacked between the display surface 420 and the electrochromic layer 220, the orthographic projection of the electrochromic portion 221 on the display surface 420 at least partially overlaps with the non-pixel area 422, and the orthographic projection of the transparent portion 222 on the display surface 420 at least partially overlaps with both the pixel area 421 and the non-pixel area 422.

[0128] In the display module 400 provided in the third aspect of the present application, the display module 400 includes a display panel 410 and a touch anti-peeping component 000. The display panel 410 has a display surface 420, the display surface 420 has a non-pixel area 422 and a plurality of pixel areas 421 and is used to realize the display function of the display panel 410, and the touch anti-peeping component 000 is arranged on the display surface 420. The touch anti-peeping component 000 is used in the display module 400 and includes a touch layer 100 and an anti-peeping layer 200, the touch layer 100 is used to realize the touch function of the display module 400, and the touch layer 100 includes a bridging electrode 140. The anti-peeping layer 200 is used to switch the light output angle according to different application scenarios. The anti-peeping layer 200 includes a third electrode 210, an electrochromic layer 220 and a fourth electrode 230 which are stacked in sequence. The third electrode 210 and the bridging electrode 140 are in the same layer and are independently arranged, so that the third electrode 210 and the bridging electrode 140 can be prepared in the same process, saving process steps. The electrochromic layer 200 includes a transparent portion 222 and an electrochromic portion 221. The transparent portion 222 is used to emit light, and the electrochromic portion 221 is used to switch the light output angle by changing the transmittance. And the fourth electrode 230 is stacked between the display surface 420 and the electrochromic layer 220. The orthographic projection of the electrochromic portion 221 on the display surface 420 overlaps at least partially with the non-pixel area 422, and the orthographic projection of the transparent portion 222 on the display surface 420 overlaps at least partially with both the pixel area 421 and the non-pixel area 422. The orthographic projection of the third electrode 210 on the insulating layer 120, the orthographic projection of the electrochromic portion 221 on the insulating layer 120, and the orthographic projection of the fourth electrode 230 on the insulating layer 120 at least partially overlap. The embodiment of the present application can dynamically switch the light emission angle in real time according to the application scenario, so that the display panel 410 can be switched between the shared display state / the anti-peeping display state. In the anti-peeping display state, the electrochromic layer 220 blocks a larger angle of light, thereby improving the anti-peeping effect.

[0129] Optional, such as Figure 2 and Fig.23 As shown, the touch-screen anti-peeping component 000 may be integrated with the display device, and the touch-screen anti-peeping component 000 may be disposed on the display surface 420 of the display panel 410 .

[0130] Optionally, a polarizer 800 is further provided on the side of the touch-screen privacy protection component 000 facing away from the display panel 410 . The polarizer 800 can reduce the reflection of external light, increase the contrast, and enhance the display effect.

[0131] Optionally, a cover plate 900 is further provided on the side of the polarizer 800 away from the touch anti-peeping component 000, and the cover plate 900 is located at the outermost side of the display module 400 and directly contacts the user. The cover plate 900 can withstand a certain degree of external impact and reduce screen damage caused by falling or other unexpected situations.

[0132] Optionally, the polarizer 800 and the cover plate 900 may be bonded together by optical adhesive 810 to increase the adhesion between the polarizer 800 and the cover plate 900 .

[0133] Alternatively, the touch-screen peep-proof component 000 may not be integrated with the display device and may be used alone and attached to the transparent cover. Optionally, after being prepared on the substrate 500, the touch-screen peep-proof component 000 needs to be peeled off to obtain the touch-screen peep-proof component 000, and then the touch-screen peep-proof component 000 is attached to the display panel 410 or the transparent cover in the display module 400.

[0134] The display panel 410 includes a substrate 500 on the side of the buffer layer 310 away from the anti-peep layer 200, and the substrate 500 is used to provide support and bearing for the display panel 410. There are many ways to set the substrate 500, and the substrate 500 may include a substrate and an array layer 510 arranged on one side of the substrate. The array layer 510 includes a first conductive layer, a second conductive layer, and a third conductive layer arranged in a stacked manner. An insulating layer is arranged between adjacent conductive layers. Exemplarily, a pixel circuit is arranged on the array layer 510, and the pixel driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate can be located in the first conductive layer, the second plate can be located in the second conductive layer, and the source and drain can be located in the third conductive layer.

[0135] Optionally, the display panel 410 further includes a light emitting layer 600 located between the array layer 510 and the buffer layer 310, and the light emitting layer 600 includes light emitting units, and the light emitting colors of the light emitting units may be different to achieve a colored display of the display panel 410. For example, the upper light emitting unit includes a red light emitting unit for emitting red light, a green light emitting unit for emitting green light, and a blue light emitting unit for emitting blue light.

[0136] Optionally, the display panel 410 also includes an encapsulation layer 700 between the light-emitting layer 600 and the buffer layer 310, and the encapsulation layer 700 includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer arranged in sequence on the side away from the substrate 500 to encapsulate the display panel and ensure the effectiveness of the encapsulation.

[0137] Optionally, the first encapsulation layer is an inorganic encapsulation layer, and the inorganic encapsulation layer can be prepared by chemical vapor deposition, which can improve the compactness of the first encapsulation layer, thereby improving the encapsulation effect of the encapsulation layer 700 .

[0138] Optionally, the encapsulation layer 700 further includes a second encapsulation layer located on the side of the first encapsulation layer away from the substrate, and the material of the second encapsulation layer includes an organic material. That is, the second encapsulation layer is an organic encapsulation layer, and the organic encapsulation layer can be prepared by inkjet printing, so that the encapsulation layer 700 has a suitable thickness.

[0139] Optionally, the encapsulation layer 700 may further include a third encapsulation layer located on the side of the second encapsulation layer away from the substrate, and the material of the third encapsulation layer includes an inorganic material. That is, the third encapsulation layer is an inorganic encapsulation layer, and further adding an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer 700.

[0140] Optionally, the material of the first encapsulation layer is the same as the material of the third encapsulation layer, so that the first encapsulation layer and the third encapsulation layer can be prepared using the same equipment, which can simplify the preparation process of the display panel 410 .

[0141] The application can be implemented in other specific forms without departing from its spirit and essential characteristics. For example, the algorithm described in the specific embodiment can be modified, and the system architecture does not depart from the basic spirit of the application. Therefore, the current embodiment is regarded as exemplary and non-restrictive in all aspects, and the scope of the application is defined by the attached claims rather than the above description, and all changes falling within the meaning of the claims and the scope of equivalents are thereby included in the scope of the application.

Claims

1. A touch-screen anti-peeping component, characterized in that: The touch-screen anti-peeping component comprises: A touch layer including a bridging electrode; The anti-peeping layer includes a third electrode, an electrochromic layer and a fourth electrode which are stacked in sequence, and the third electrode and the bridging electrode are in the same layer and are independently arranged.

2. The touch-screen privacy protection component according to claim 1, characterized in that: The touch layer further includes a first touch electrode, a second touch electrode and an insulating layer, the first touch electrode is located on a side of the insulating layer away from the bridging electrode, and the first touch electrode and the second touch electrode are in the same layer and are independently arranged; Preferably, the third electrode is located between the electrochromic layer and the insulating layer; Preferably, the distance between the bridging electrode and the third electrode is not less than 5 μm; Preferably, the distance between the bridging electrode and the third electrode is not less than 10 μm; Preferably, in the stacking direction, the distance between the third electrode and the first touch electrode is not less than 2 μm; Preferably, an orthographic projection of the third electrode on the electrochromic layer does not overlap with an orthographic projection of the first touch electrode on the electrochromic layer.

3. The touch-screen anti-peeping component according to claim 2, characterized in that: The electrochromic layer comprises a transparent portion and an electrochromic portion, and an orthographic projection of the third electrode on the insulating layer, an orthographic projection of the electrochromic portion on the insulating layer, and an orthographic projection of the fourth electrode on the insulating layer at least partially overlap; Preferably, the electrochromic portion is annular and encloses a hollow area, and a plurality of the electrochromic portions are arranged at intervals; Preferably, a gap is provided between adjacent electrochromic parts, and the second touch electrode is located in the gap; Preferably, the transparent portion includes a first transparent portion and a second transparent portion, the electrochromic portion is arranged around the first transparent portion, and the second transparent portion is spaced apart from the first transparent portion through the electrochromic portion.

4. The touch-screen anti-peeping component according to claim 3, characterized in that: The electrochromic portion and the transparent portion are an integrally formed structure, and the third electrode and / or the fourth electrode are ring-shaped.

5. The touch-screen privacy protection component according to claim 3, characterized in that: The transparent portion has an opening disposed between the first transparent portion and the second transparent portion, and the electrochromic portion is located in the opening; Preferably, the orthographic projection of the third electrode on the electrochromic layer does not overlap with the first transparent portion and the second transparent portion; Preferably, the third electrode is a transparent electrode, and the orthographic projection of the third electrode on the electrochromic layer at least partially overlaps with the first transparent portion and / or the second transparent portion; Preferably, the third electrode is a metal electrode, and the orthographic projection of the third electrode on the electrochromic layer at least partially overlaps with the second transparent portion, and the orthographic projection of the third electrode on the electrochromic layer does not overlap with the first transparent portion; Preferably, the third electrode is provided with a first grid hole for exposing the first transparent portion; Preferably, the material of the transparent portion includes insulating material; Preferably, the material of the transparent part includes transparent material.

6. The touch-screen privacy protection assembly according to claim 5, characterized in that: The orthographic projection of the fourth electrode on the electrochromic layer does not overlap with the first transparent portion and the second transparent portion; Preferably, the fourth electrode is a transparent electrode, and the orthographic projection of the fourth electrode on the electrochromic layer also at least partially overlaps with the first transparent portion and / or the second transparent portion; Preferably, the fourth electrode is a metal electrode, the orthographic projection of the fourth electrode on the electrochromic layer also overlaps at least partially with the second transparent portion, and the orthographic projection of the fourth electrode on the electrochromic layer does not overlap with the first transparent portion; Preferably, the fourth electrode is provided with a second grid hole for exposing the first transparent portion; Preferably, the fourth electrode is provided with a third grid hole for exposing the second transparent portion; Preferably, the material of the third electrode and / or the fourth electrode includes at least one of copper, aluminum, molybdenum, titanium, silver, gold, nickel, chromium, iron, indium, gallium, TiAlTi, ITO / Ag / ITO, CuNi, and MoAlMo.

7. The touch-screen privacy protection assembly according to claim 2, characterized in that: The touch-control anti-peeping component further includes a buffer layer, the fourth electrode layer is stacked between the electrochromic layer and the buffer layer, and / or, The touch-control anti-peeping component further includes a protective layer, and the first touch-control electrode is stacked between the insulating layer and the protective layer; Preferably, the material of the insulating layer and / or the protective layer includes at least one of silicon nitride, silicon oxide, and organic material; Preferably, the material of the buffer layer includes at least one of silicon nitride, silicon oxide, a-Si, and organic material.

8. A method for preparing a touch-screen anti-peeping component, characterized in that: The following steps are involved: forming a buffer layer; forming a fourth electrode on one side of the buffer layer; forming an electrochromic layer on a side of the fourth electrode away from the buffer layer; A third electrode and a bridging electrode are formed on a side of the electrochromic layer away from the fourth electrode. The third electrode and the bridging electrode are in the same layer and are independently arranged.

9. The method for preparing a touch-screen privacy protection component according to claim 8, characterized in that: The step of forming a third electrode and a bridging electrode on a side of the electrochromic layer away from the fourth electrode comprises: forming an electrode blank layer on a side of the electrochromic layer away from the fourth electrode; Patterning the electrode blank layer to form a bridge electrode and a third electrode; Preferably, the electrochromic layer comprises a transparent portion and an electrochromic portion; Preferably, a third electrode and a bridging electrode are formed on a side of the electrochromic layer away from the fourth electrode, and the third electrode and the bridging electrode are arranged in the same layer and independently of each other, and the steps further include: An insulating layer is formed on a side of the third electrode and the bridging electrode facing away from the electrochromic layer, and an orthographic projection of the third electrode on the insulating layer, an orthographic projection of the electrochromic portion on the insulating layer, and an orthographic projection of the fourth electrode on the insulating layer at least partially overlap; forming a first touch electrode and a second touch electrode on a side of the insulating layer away from the third electrode; Preferably, after the step of forming the first touch electrode and the second touch electrode on a side of the insulating layer away from the third electrode, the method further includes: A protection layer is formed on a side of the first touch electrode away from the insulating layer.

10. A display module, characterized in that: include: A display panel having a display surface, wherein the display surface has a non-pixel area and a plurality of pixel areas; A touch-screen anti-peeping component is disposed on the display surface; Wherein, the touch-screen anti-peeping component is a touch-screen anti-peeping component as described in any one of claims 1 to 7, the electrochromic layer includes a transparent portion and an electrochromic portion, the fourth electrode layer is stacked between the display surface and the electrochromic layer, the orthographic projection of the electrochromic portion on the display surface at least partially overlaps with the non-pixel area, and the orthographic projection of the transparent portion on the display surface at least partially overlaps with both the pixel area and the non-pixel area.

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