A display panel

Abstract

This application provides a display panel. The display panel includes a light-emitting device layer and a pressure-sensitive control layer. The light-emitting device layer includes light-emitting pixels, and the pressure-sensitive control layer includes a light-controlling pattern corresponding to the light-emitting pixels. The pressure-sensitive control layer includes a light-controlling area and an opening area. A pressure-sensitive material is disposed in the light-controlling area. In privacy mode, the light emitted from the light-emitting pixels can pass through the opening area and be transmitted outwards. In display mode, the light emitted from the light-emitting pixels can pass through both the opening area and the light-controlling area. By adjusting the light transmission in different areas of the pressure-sensitive control layer, the normal display and privacy effects of the display panel are achieved, effectively reducing power consumption during privacy mode and improving the overall performance of the panel.

Description

Technical Field

[0001] This invention relates to the field of display panel manufacturing technology, and more particularly to a display panel. Background Technology

[0002] With the continuous development and improvement of display technology, people have put forward higher requirements for the display quality and effect of display panels in order to enhance the user experience.

[0003] Display panels are becoming increasingly diverse in function, such as privacy display panels, which are gaining popularity due to their privacy protection effect. In normal display mode, a privacy display panel is no different from a regular display panel. However, when the privacy function is activated, it can adjust the light emission angle of the display panel to achieve the purpose of privacy protection. However, in existing technologies, the privacy structure within the manufactured privacy display panel is usually a louver structure. By setting the privacy film as multiple tiny louvers, these louvers further form a grating structure. When emitted light passes through the grating structure, the grating structure can change the emission angle of the emitted light, thereby achieving the privacy effect. However, the above-mentioned privacy panels have high power consumption and a complex privacy structure in privacy mode. Furthermore, the pixel brightness decreases during privacy protection, resulting in an unsatisfactory privacy protection effect and hindering further improvements in the performance of privacy display panels.

[0004] In conclusion, existing privacy display panels do not provide ideal privacy protection in privacy mode, which is not conducive to further improving the overall performance of the display panel. Summary of the Invention

[0005] This invention provides a display panel that effectively improves the privacy protection effect of the display panel and enhances its overall performance.

[0006] To address the aforementioned technical problems, a first aspect of this invention provides a display panel, comprising:

[0007] Array substrate;

[0008] A light-emitting device layer is disposed on the array substrate, the light-emitting device layer comprising an array of light-emitting pixels; and...

[0009] A pressure-sensitive control layer is disposed on the light-emitting side of the light-emitting device layer. The pressure-sensitive control layer includes a patterned light-control pattern, which is aligned with the light-emitting pixel.

[0010] The light-controlling pattern includes a light-controlling area and an opening area, and a pressure-sensitive material is disposed in the light-controlling area; the light-controlling area has electro-variable transparency characteristics.

[0011] According to one embodiment of the present invention, the pressure-sensitive material includes any one of iologen derivatives, polypyrrole, polythiophene, polyaniline and its derivatives.

[0012] According to an embodiment of the present invention, the display panel further includes an encapsulation layer and a piezoelectric driving layer. The encapsulation layer is disposed on the light-emitting device layer, the pressure-sensitive control layer is disposed on the encapsulation layer, and the piezoelectric driving layer is disposed on the pressure-sensitive control layer and electrically connected to the pressure-sensitive control layer.

[0013] In the privacy mode, the piezoelectric driving layer provides a driving voltage to the pressure-sensitive control layer and causes the pressure-sensitive control layer to deform.

[0014] According to one embodiment of the present invention, the driving voltage value provided by the piezoelectric driving layer increases or decreases linearly.

[0015] According to one embodiment of the present invention, the display panel further includes a barrier wall, which is disposed around the light control area of ​​the pressure-sensitive control layer.

[0016] According to one embodiment of the present invention, the opening area of ​​the pressure-sensitive control layer is correspondingly disposed in the middle of the light-emitting pixel area, and the barrier and the light-controlling area are both disposed around the opening area.

[0017] According to one embodiment of the present invention, the opening area is configured as a hexagonal structure, the hexagonal structure including a first light-transmitting sub-region and a second light-transmitting sub-region;

[0018] Wherein, the area of ​​the first phototransparent region is greater than or equal to the area of ​​the second phototransparent region.

[0019] According to one embodiment of the present invention, the opening area is configured as a symmetrical hexagonal structure, and the symmetrical hexagonal structure includes a first side disposed on both sides of its axis of symmetry and a second side connected to the first side.

[0020] The angle formed by the first side and the second side is 120° to 170°.

[0021] According to one embodiment of the present invention, the ratio between the area of ​​the opening region of the pressure-sensitive control layer and the area of ​​the light-controlling region is 1 to 3.

[0022] According to one embodiment of the present invention, at least a portion of the light-controlling area is projected onto the light-emitting device layer within the light-emitting pixel region.

[0023] The beneficial effects of this invention are as follows: Compared with the prior art, this application provides a display panel. The display panel includes a light-emitting device layer and a pressure-sensitive control layer. The light-emitting device layer includes light-emitting pixels, and the pressure-sensitive control layer includes a light-controlling pattern corresponding to the light-emitting pixels. The pressure-sensitive control layer includes a light-controlling area and an opening area. A pressure-sensitive material is disposed in the light-controlling area. In privacy mode, the light emitted from the light-emitting pixels can pass through the opening area and be transmitted outwards. In display mode, the light emitted from the light-emitting pixels can pass through both the opening area and the light-controlling area. By adjusting the light transmission in different areas of the pressure-sensitive control layer, normal display and privacy effects of the display panel are achieved, effectively reducing power consumption during privacy mode and improving the overall performance of the panel. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a top view of the display panel provided in the embodiments of this application and a magnified schematic diagram of its pixel structure;

[0026] Figure 2 This is a schematic diagram of the film layer structure of the display panel provided in the embodiments of this application;

[0027] Figure 3 This is a top view of the pressure-sensitive control layer 202 provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram illustrating the display state of the display panel provided in the embodiments of this application in display mode and privacy mode;

[0029] Figures 5-12 This is a schematic diagram of the corresponding film layers during the fabrication of the display panel in the embodiments of this application. Detailed Implementation

[0030] In the following detailed description, only certain embodiments of the invention are shown and described by way of simple illustration. As will be understood by those skilled in the art, the embodiments described herein can be modified in various ways without departing from the spirit or scope of the invention.

[0031] In the accompanying drawings, the thicknesses of layers, films, plates, regions, etc., may be enlarged for clarity, better understanding, and ease of description. It should be understood that when an element such as a layer, film, region, or substrate is referred to as "on another element," it may be located directly on the other element or there may be inserted elements.

[0032] Furthermore, unless explicitly stated otherwise, the word "including" and its variations such as "comprising" or "containing" will be understood to imply the inclusion of the discussed element, but not necessarily the exclusion of other elements. Further, in the specification, the phrase "on" means placed above or below the object part, and not necessarily on the upper side of the object part based on the direction of gravity.

[0033] It will be understood that although the terms “first,” “second,” etc., may be used in this document to describe various components, these components should not be limited by these terms. These components are used only to distinguish one component from another.

[0034] As used in this article, the singular forms “one,” “a,” and “the” are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It will also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the said feature or component, but do not exclude the presence or addition of one or more other features or components.

[0036] It will be understood that when a layer, region, or component is referred to as being "formed on" another layer, region, or component, it can be formed directly or indirectly on that other layer, region, or component. For example, intermediate layers, regions, or components may exist.

[0037] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other.

[0038] This application provides a display panel that effectively addresses the issues of high power consumption and unsatisfactory privacy protection when using a display panel for privacy purposes. This results in a significant improvement in the panel's privacy protection effect and overall performance.

[0039] like Figure 1 As shown, Figure 1 This is a top view of the display panel provided in the embodiments of this application and a magnified schematic diagram of its pixel structure.

[0040] When setting the display panel 10, the display panel 10 may include a display area 141 and a non-display area 142. In the following embodiments, the non-display area 142 may be set around the display area 141, such as the non-display area 142 being set as the four-sided border of the display panel. Furthermore, a plurality of light-emitting pixels 14 are also provided within the display area 141. The plurality of light-emitting pixels 14 are arranged in an array to form the entire display area.

[0041] See details Figure 1 The top view and enlarged view in the figure show that when setting the light-emitting pixel 14 provided in the embodiments of this application, the light-emitting pixel 14 may include a variety of light-emitting sub-pixels of different colors. In the following embodiments, the light-emitting sub-pixels are red light-emitting sub-pixels 144, blue light-emitting sub-pixels 145, and green light-emitting sub-pixels 146. Specifically, when arranging the above-mentioned light-emitting sub-pixels of different colors, light-emitting sub-pixels of the same color are arranged in the same row. Optionally, red light-emitting sub-pixels 144 are arranged in the first row, blue light-emitting sub-pixels 145 are arranged in the second row, and green light-emitting sub-pixels 146 are arranged in the third row, and the corresponding light-emitting sub-pixels in other rows are arranged according to the arrangement rules of the first, second, and third rows. This forms the pixel structure provided in the embodiments of this application. Furthermore, the above-mentioned light-emitting sub-pixels can also be set according to other arrangement methods, which will not be elaborated here.

[0042] like Figure 2 As shown, Figure 2 This is a schematic diagram of the film layer structure of the display panel provided in the embodiments of this application. (In conjunction with...) Figure 1 The top view structure in the middle, Figure 2 Taking the film layer structure corresponding to the red light-emitting sub-pixel 144 as an example, the structure of other light-emitting pixel areas is similar to that in the display panel. Figure 2 The structure is the same as in [the previous text], so I will not repeat it here.

[0043] Specifically, the display panel provided in this embodiment may include a light-emitting device layer 01, an encapsulation layer 108, a pressure-sensitive control layer 202, and a cover plate 109. The encapsulation layer 108 is disposed on the light-emitting side of the light-emitting device layer 01 and seals the light-emitting device layer 01. Meanwhile, the pressure-sensitive control layer 202 is disposed on the side of the encapsulation layer 108 away from the light-emitting device layer 01, and the cover plate 109 is disposed on the side of the pressure-sensitive control layer 202 away from the light-emitting device layer 01, thereby forming the display panel provided in this embodiment.

[0044] When setting the device structure in the embodiments of this application, the light-emitting device layer 01 is correspondingly disposed on the array substrate 02. Specifically, the array substrate 02 includes a substrate 101, a buffer layer 102, and a thin-film transistor device 204, and the light-emitting device layer 01 may include a first auxiliary functional layer 103, a light-emitting layer 105, a second auxiliary functional layer 106, and a cathode layer 107.

[0045] Specifically, during setup, the buffer layer 102 is disposed on the substrate 101, and the thin-film transistor device 204 is disposed on the buffer layer 102 or on the side of the buffer layer 102 away from the substrate 101. The thin-film transistor device 204 may include an active layer, a source, a drain, a gate layer, and an interlayer dielectric or insulating layer disposed between these layers. Figure 2 The specific film structure of the thin-film transistor device 204 is not shown. When setting the thin-film transistor device 204, the film structure can be set according to the conventional thin-film transistor to ensure the normal operation of the thin-film transistor.

[0046] Furthermore, a protrusion 104 is also provided on the light-emitting side of the light-emitting device layer 01. In this embodiment, the protrusion 104 may be a pixel definition layer. During fabrication, the pixel definition layer is patterned and etched to form the protrusion 104 and the pixel opening 1041 between adjacent protrusions 104 in this embodiment. The thin-film transistor device 204 may be disposed in the region corresponding to the pixel opening 1041.

[0047] Furthermore, in this embodiment, the first auxiliary functional layer 103 is disposed on the thin-film transistor device 204 and electrically connected to the thin-film transistor device 204, such as the first auxiliary functional layer 103 being electrically connected to the source or drain of the thin-film transistor device 204. In this embodiment, the first auxiliary functional layer 103 is at least correspondingly disposed within the pixel opening 1041 and is planarized within the pixel opening 1041. The first auxiliary functional layer 103 may include a stacked hole transport layer and a hole injection layer, thereby ensuring the normal operation of the light-emitting layer.

[0048] In this embodiment, the light-emitting layer 105 is disposed on the first auxiliary functional layer 103, and the light-emitting layer 105 is disposed at least in the area corresponding to the pixel opening 1041. When the display panel is working normally, the light-emitting layer disposed in the area of ​​the pixel opening 1041 can emit light, thereby enabling the panel to display the image.

[0049] Furthermore, when setting the light-emitting layer 105, the light-emitting layer 105 can be set as an organic light-emitting layer, and the normal display of the display panel is realized through the light emission of the organic light-emitting layer. Furthermore, in this embodiment of the application, a second auxiliary functional layer 106 is also provided on the light-emitting layer 105, wherein the second auxiliary functional layer 106 can be correspondingly disposed on the protrusion 104 and the light-emitting layer 105, and is attached to the light-emitting layer 105.

[0050] Specifically, when setting the second auxiliary function layer 106, the second auxiliary function layer 106 may include an electron transport layer and an electron injection layer stacked together. In this way, when the display panel is working normally, the first auxiliary function layer 103, the light-emitting layer 105, and the second auxiliary function layer 106 cooperate with each other to ensure the normal light emission and display of the light-emitting layer 105.

[0051] In this embodiment, the cathode layer 107 of the light-emitting device layer 01 is disposed above the second auxiliary function layer 106. The cathode layer 107 is disposed to ensure the transmission of control signals in the light-emitting layer and the auxiliary function layer, and to realize the light-emitting display of the panel.

[0052] Furthermore, in this embodiment, the encapsulation layer 108 is disposed on the side of the cathode layer 107 away from the light-emitting layer, and the light-emitting device layer is sealed by the encapsulation layer 108 to prevent external moisture and other substances from entering the interior of the light-emitting device layer and damaging the panel. The encapsulation layer 108 can be constructed by stacking organic and inorganic film layers to improve the encapsulation effect.

[0053] Furthermore, a pressure-sensitive control layer 202 is also provided on the side of the encapsulation layer 108 away from the light-emitting device layer 01. In this embodiment, the projection of the pressure-sensitive control layer 202 on the substrate at least partially overlaps with the projection of the pixel opening 1041 on the substrate. To ensure the control effect of the pressure-sensitive control layer 202, the projection of the pressure-sensitive control layer 202 can be completely located within the light-emitting pixel area corresponding to the pixel opening 1041.

[0054] Specifically, when setting the pressure-sensitive control layer 202 provided in the embodiments of this application, the pressure-sensitive control layer 202 is patterned on the encapsulation layer 108 and corresponds to the light-emitting pixels in the light-emitting device layer 01.

[0055] Specifically, the pressure-sensitive control layer 202 includes a patterned light-control pattern 2021. The light-control pattern 2021 is configured corresponding to the light-emitting pixels.

[0056] like Figure 3 As shown, Figure 3 This is a top view of the pressure-sensitive control layer 202 provided in the embodiments of this application. (Combined with...) Figure 2In the film structure of this application embodiment, when the pressure-sensitive control layer 202 is provided, the pressure-sensitive control layer 202 includes at least an opening region 32 and a light-controlling region 31. The light-controlling region 31 is provided with the light-controlling pattern 2021 provided in this application embodiment.

[0057] In this embodiment, a filling material is disposed within the light-controlling area 31. The filling material includes pressure-sensitive material or functional material; in the following example, pressure-sensitive material is used as an example to illustrate the light-controlling area 31.

[0058] In this embodiment, when the display panel is in two different functional states, display mode and privacy mode, the pressure-sensitive material in the light control area 31 can have different effects on the light. Specifically, when the display panel is in normal display mode, the light-emitting pixels 14 in the light-emitting pixel area emit light normally, and the light emitted by the light-emitting pixels 14 can pass through the light control area 31 and the opening area 32. At this time, the filling material in the light control area 31 will not block the light, thereby ensuring the emission of the emitted light and realizing the normal display of the panel.

[0059] When the display panel switches to privacy mode, the light-controlling area has electrovariable transparency. The pressure-sensitive material within the light-controlling area 31 can be controlled and turned dark, preventing the emitted light from the light-emitting pixel 14 from escaping from the light-controlling area 31 and allowing it to pass through the opening area 32, thus effectively ensuring the privacy purpose of the display panel. Furthermore, in this embodiment, in privacy mode, the area of ​​the opening area is smaller than the area of ​​the corresponding pixel opening area during display. This effectively reduces the power consumption of the display panel in privacy mode, thereby improving the overall performance of the panel.

[0060] Specifically, when setting the pressure-sensitive control layer 202, the display panel also includes a barrier 201. See details. Figure 2 as well as Figure 3 In the structure described above, a barrier 201 is disposed on the encapsulation layer 108, and the barrier 201 surrounds the light-controlling area 31 of the pressure-sensitive control layer 202. Thus, during installation, the barrier 201 is first coated on the encapsulation layer 108 to define the light-controlling area 31 in this application. Then, the pressure-sensitive material is disposed within the area enclosed by the barrier 201, ultimately forming the light-controlling area 31 in this embodiment.

[0061] In this embodiment, when setting the baffle 201, the baffle 201 may include an inner baffle 2012 and an outer baffle 2011. Thus, the inner baffle 2012 and the outer baffle 2011 respectively surround the inner and outer contour surfaces of the pressure-sensitive material, thereby defining the light-controlling pattern 2021 structure corresponding to the light-controlling area 31. Since the inner baffle 2012 is located in the area near the center, the width of the inner baffle 2012 can be less than or equal to the width of the outer baffle 2011, thereby preventing the inner baffle 2012 from blocking light.

[0062] Meanwhile, when setting the inner ring barrier 2012, the shape of the inner ring barrier 2012 is the same as the shape of the opening area 32, and the shape of the outer ring barrier 2011 can be the same as the shape of the pixel opening.

[0063] See details Figure 3 In the structure described in this embodiment, when the pressure-sensitive control layer 202 is patterned, the opening area 32 formed by the pressure-sensitive control layer 202 can be set to a regular shape. For example, the opening area 32 can be set to a triangle, quadrilateral, hexagon, or other polygonal shape, or a circle, etc., thereby ensuring the privacy protection effect of the display panel in privacy mode.

[0064] When the human eye observes a privacy-protected display panel, its field of vision is roughly a cone-shaped space with the eye as the apex. Within this cone-shaped space, the content displayed on the screen can be observed. However, when the view deviates from the central axis of this cone-shaped space, especially when observing at a large angle, the human eye cannot properly observe the image display, thus achieving the purpose of privacy protection. Based on the above observation effect of the human eye's perspective and privacy-protecting characteristics, in this embodiment of the application, to maximize the privacy-protecting effect, the opening area 32 formed by the pressure-sensitive control layer 202 is set as a hexagonal structure, corresponding to... Figure 3 The hexagon in the diagram is abcdef.

[0065] See details Figure 3 In the planar structure, the opening region 32 can be correspondingly disposed in the middle of the red sub-pixel 144 of the pixel opening 1041, and the hexagonal structure corresponding to the opening region 32 may include a first light-transmitting sub-region 311 and a second light-transmitting sub-region 312. Among them, the opening region 32 and the light-controlling region 31 have an axis BB', which extends from one side of the pressure-sensitive control layer 202 to the opposite side and coincides with the line connecting the two opposite corners be of the hexagon.

[0066] In this embodiment, the two sides intersecting the axis BB' are recessed inwards towards the interior of the hexagonal structure, that is, adjacent sides ab and bc in the hexagonal structure are recessed inwards. Furthermore, in this embodiment, the first light-transmitting sub-region 311 and the second light-transmitting sub-region 312 are disposed on both sides of the axis BB', and the area of ​​the first light-transmitting sub-region 311 is greater than or equal to the area of ​​the second light-transmitting sub-region 312.

[0067] When the area of ​​the first light-transmitting sub-region 311 is larger than the area of ​​the second light-transmitting sub-region 312, the amount of light passing through the two sub-regions is different, thereby creating different display or privacy effects. In the following embodiment, the first light-transmitting sub-region 311 and the second light-transmitting sub-region 312 are set to have the same area for illustration.

[0068] Specifically, in setting the hexagonal abcdef provided in this embodiment, the opposite sides of the hexagon are parallel and equal, and symmetrically arranged with respect to the axis BB'. For example, side ab is parallel and equal to side ef, side cd is parallel and equal to side af, and side bc is parallel and equal to side de. Simultaneously, the lengths of side af and side cd are greater than and equal to the lengths of side ef and side ed, and the length of side ef is the same as the length of side de, thus forming the hexagonal abcdef structure provided in this embodiment. This ensures that the pressure-sensitive control layer has optimal control effect during human observation in privacy mode.

[0069] Furthermore, when setting the opening area 32, if edge de is set as the first side and edge ef as the second side, and the first side and the second side are adjacent, then an angle α is formed between the first side and the second side. In this embodiment, the angle α is set to 120° to 170°. Optionally, the angle α is set to 130° or 150°. This ensures that the display panel can still maintain a good privacy protection effect in the maximum line field of view when in privacy mode.

[0070] Meanwhile, the distance between vertices b and c of the opening area 32 can be set to 10um to 60um, and the distance between edge cd and edge af can be set to 15um to 80um, or can be set according to the size of the pixel opening 1041 corresponding to different products, which will not be elaborated here.

[0071] In this embodiment, to ensure the privacy protection effect of the display panel, the ratio between the area of ​​the light-controlling area 31 and the cutout area of ​​the opening area 32 in the pressure-sensitive control layer is set to 1 to 3. Optionally, the area ratio of the light-controlling area 31 to the opening area 32 is set to 1.5 or 2.5. Thus, by adjusting the size of the opening area and the light-controlling area, the panel can be guaranteed to have both good display performance and high privacy protection.

[0072] For further details, please see Figure 2 In the film structure of this application embodiment, the projection of the outer ring barrier 2011 onto the substrate is at least partially located within the projection area corresponding to the pixel opening 1041. Furthermore, the height of the barrier 201 is greater than or equal to the height of the pressure-sensitive material within the light-control area. This avoids the barrier's influence on the pressure-sensitive material, thereby ensuring the privacy performance of the panel.

[0073] In this embodiment, the height of the barrier 201 is set to 0.5µm to 1.5µm, and the width of the barrier 201 can be set to 3µm to 30µm. Optionally, the height of the barrier is set to 1µm, the outer barrier 2011 is set to 20µm, and the inner barrier 2012 is set to 10µm, thereby ensuring the barrier's purpose of limiting the pressure-sensitive material.

[0074] Furthermore, such as Figure 4 As shown, Figure 4 This is a schematic diagram illustrating the display state of the display panel provided in the embodiments of this application in display mode and privacy mode. Figure a shows the normal display mode, and Figure b shows the privacy mode. (Combined with...) Figure 2 In the film layer structure of the panel, in this embodiment of the application, the display panel further includes a piezoelectric driving layer 203.

[0075] Specifically, the piezoelectric driving layer 203 is disposed on the light-controlling pattern and the barrier wall, and is also disposed on the side of the cover plate 109 near the light-emitting device layer 01. In this embodiment, the piezoelectric driving layer 203 is electrically connected to the pressure-sensitive control layer. When the display panel is switched to privacy mode, the piezoelectric driving layer 203 provides a driving signal to the pressure-sensitive control layer 202 to drive the pressure-sensitive material to work and achieve the privacy effect.

[0076] In this embodiment of the application, under normal display mode, the piezoelectric driving layer 203 does not provide a driving signal to the pressure-sensitive control layer 202. At this time, the pressure-sensitive material will not deform or undergo other changes such as electro-induced changes. Therefore, the light emitted by the red light-emitting sub-pixel 144 corresponding to the light-emitting pixel can be completely transmitted through the pressure-sensitive material, so that the display panel has the best display effect.

[0077] When the display panel switches to privacy mode, the piezoelectric driving layer 203 provides a driving signal to the pressure-sensitive control layer. Under the influence of the driving voltage, the pressure-sensitive control layer undergoes electrostriction, or macroscopic or microscopic deformation. For example, during macroscopic deformation, the surface film layer of the pressure-sensitive material is recessed downwards, or the pressure-sensitive material on the bottom surface of the pressure-sensitive control layer is recessed inwards. Due to the deformation of the pressure-sensitive material, the propagation path of light can be altered. When the pressure-sensitive control layer undergoes electrostriction, under the influence of voltage, the charges inside the pressure-sensitive material move directionally, thereby changing the optical properties of the pressure-sensitive material. At this time, the emitted light from the light-emitting pixels cannot pass through the light-controlling area of ​​the pressure-sensitive control layer, and the pressure-sensitive control layer within the light-controlling area becomes dark. Light can only pass through the opening area, thus achieving the privacy function of the panel.

[0078] In this embodiment, the driving voltage provided by the piezoelectric driving layer 203 to the pressure-sensitive control layer is adjustable. Specifically, the driving voltage provided to the pressure-sensitive control layer can be gradually increased or gradually decreased. For example, the voltage value of the driving voltage provided by the piezoelectric driving layer 203 can be linearly increased or linearly decreased. During the linear change, the pressure-sensitive material deforms uniformly, thereby ensuring the privacy protection effect of the panel.

[0079] Specifically, as shown in Figure a, when the display panel is in normal display mode, that is, the emitted light emitted by the red light-emitting sub-pixel 144 in the light-emitting pixel area of ​​the display panel can all be emitted from the pixel opening 1041. At this time, the emitted light corresponding to the red light-emitting sub-pixel 144 is light ray M. Light ray M can pass through the light control area 31 and the opening area 32, thereby making the panel have the maximum light output rate when displaying and ensuring its display effect.

[0080] When the display panel switches to privacy mode (see Figure b), the piezoelectric driving layer provides a driving voltage to the pressure-sensitive control layer, causing the pressure-sensitive material in the light-controlling area to deform. At this time, the emitted light from the red light-emitting sub-pixel 144 can only pass through the opening area 32, but not through the light-controlling area 31. Therefore, by controlling the light transmission in different areas, the privacy effect of the panel is achieved. Furthermore, the light intensity in the opening area is not affected during privacy mode, ensuring that the opening area still has high brightness and display effect. Simultaneously, the pressure-sensitive control layer blocks the light in the light-controlling area during privacy mode, effectively reducing the overall power consumption of the display panel.

[0081] Furthermore, this application also provides a method for manufacturing a display panel. For example... Figures 5-11 As shown, Figures 5-12 This is a schematic diagram of the corresponding film layers during the fabrication of the display panel in the embodiments of this application.

[0082] See details Figure 5 In the fabrication of the display panel provided in this embodiment, a cover plate 109 may be provided first. The cover plate 109 is cleaned, and the piezoelectric driving layer 203 of this embodiment is prepared on one side of the cover plate 109. For example, metal sputtering is performed on the cover plate by vapor deposition process to form the piezoelectric driving layer 203 and the corresponding pressure-sensitive switch described in this application.

[0083] After the piezoelectric driving layer 203 is fabricated, a barrier 201 is coated at the position corresponding to the piezoelectric driving layer 203. This barrier 201 defines the light-controlling region 31 of the pressure-sensitive control layer. See details. Figure 6 After the baffle 201 is prepared, a pressure-sensitive control layer 202 is set in the light-controlling area 31. Specifically, a pressure-sensitive material can be directly coated in the light-controlling area 31. In this embodiment, the pressure-sensitive material includes violet derivatives, such as monomers of methyl violet cationic free radicals, polypyrrole, polythiophene, polyaniline, and their derivatives. In this embodiment, the thickness of the pressure-sensitive material can be set to 0.2 μm to 1 μm, and the corresponding height of the baffle can be set to 0.5 μm to 1 μm.

[0084] Furthermore, when setting the pressure-sensitive control layer 202, the pressure-sensitive material can be directly transferred or attached to the light-controlling area 31, thus eliminating the need for the barrier wall 201 and further simplifying the preparation process.

[0085] See details Figure 7 In the next step, a substrate 101 is provided, and a buffer layer 102 is formed on the substrate 101. Simultaneously, a thin-film transistor device 204 is formed on the side of the buffer layer 102 away from the substrate. The formation of the aforementioned film layer can be carried out according to conventional film layer structures, which will not be elaborated here.

[0086] See details Figure 8 In the process, a pixel definition layer is then formed on the light-emitting side of the thin-film transistor device 204, and the pixel definition layer is etched to form a pixel opening 1041 and a corresponding protrusion 104.

[0087] After the pixel aperture 1041 is fabricated, the first auxiliary functional layer 103 and the light-emitting layer 105 are sequentially disposed on one side of the thin film transistor device 204.

[0088] See details Figure 11 After the light-emitting layer 105 is set, a second auxiliary functional layer 106 is set on the light-emitting layer 105, and a cathode layer 107 is set on the second auxiliary functional layer 106. This ensures the normal light emission and driving of the light-emitting layer 105.

[0089] Furthermore, it is sealed: an encapsulation layer 108 is provided on the second cathode layer 107 to prevent external moisture and other substances from entering the device.

[0090] See details Figure 12 In the middle, Figure 6 The pressure-sensitive control layer formed in the preparation and the Figure 11 The film layers formed in the process are combined. Specifically, the pressure-sensitive control layer 202 is attached to the encapsulation layer 108 and tightly bonded to form the display panel provided in the embodiment of this application.

[0091] Furthermore, in this application embodiment, a display device is also provided, which includes the display panel in this application embodiment. By setting a pressure-sensitive control layer in the display panel, the panel has a high display effect when it is displaying normally, and at the same time, the panel also has high privacy performance and low power consumption in privacy mode, thereby effectively improving the overall performance of the panel.

[0092] The display panel and the corresponding display device can be any product or component with privacy protection or other functions, such as mobile phones, computers, electronic paper, monitors, and wearable devices, and there are no specific restrictions on their specific types.

[0093] In summary, the above description provides a detailed overview of a display panel provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core ideas of the present invention. Although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. A display panel, characterized in that, include: Array substrate; A light-emitting device layer is disposed on the array substrate, and the light-emitting device layer includes light-emitting pixels arranged in an array; as well as, A pressure-sensitive control layer is disposed on the light-emitting side of the light-emitting device layer. The pressure-sensitive control layer includes a patterned light-control pattern, which is aligned with the light-emitting pixel. The light-controlling pattern includes a light-controlling area and an opening area, and a pressure-sensitive material is disposed in the light-controlling area; the light-controlling area has electro-variable transparency characteristics. When the display panel is in normal display mode, the light-emitting pixels in the light-emitting pixel area emit light normally, and the light emitted by the light-emitting pixels passes through the light control area and the opening area; when the display panel switches to privacy mode, the pressure-sensitive material in the light control area is regulated and turned into a dark state, and the light emitted by the light-emitting pixels passes through the opening area and cannot be emitted from the light control area.

2. The display panel according to claim 1, characterized in that, The pressure-sensitive material includes any one of violet derivatives, polypyrrole, polythiophene, polyaniline and its derivatives.

3. The display panel according to claim 1, characterized in that, The display panel further includes an encapsulation layer and a piezoelectric driving layer. The encapsulation layer is disposed on the light-emitting device layer, the pressure-sensitive control layer is disposed on the encapsulation layer, and the piezoelectric driving layer is disposed on the pressure-sensitive control layer and electrically connected to the pressure-sensitive control layer. In the privacy mode, the piezoelectric driving layer is used to provide a driving voltage to the pressure-sensitive control layer.

4. The display panel according to claim 3, characterized in that, The voltage value of the driving voltage provided by the piezoelectric driving layer is adjustable.

5. The display panel according to any one of claims 1-4, characterized in that, The display panel also includes a barrier wall, which is arranged around the light control area of ​​the pressure-sensitive control layer.

6. The display panel according to claim 5, characterized in that, The opening area of ​​the pressure-sensitive control layer is located in the middle of the light-emitting pixel area, and the barrier and the light control area are both arranged around the opening area.

7. The display panel according to claim 6, characterized in that, The opening area is configured as a hexagonal structure, which includes a first light-transmitting sub-region and a second light-transmitting sub-region; Wherein, the area of ​​the first phototransparent region is greater than or equal to the area of ​​the second phototransparent region.

8. The display panel according to claim 6, characterized in that, The opening area is configured as a symmetrical hexagonal structure, and the symmetrical hexagonal structure includes at least a first side disposed on both sides of its axis of symmetry and a second side connected to the first side. The angle formed by the first side and the second side is 120°~170°.

9. The display panel according to claim 1, characterized in that, The ratio between the area of ​​the opening region and the area of ​​the light-controlling region of the pressure-sensitive control layer is 1 to 3.

10. The display panel according to claim 1, characterized in that, At least a portion of the light-controlling area is projected onto the light-emitting device layer within the light-emitting pixel area.

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