Display panel and display device

Abstract

The application provides a display panel and a display device, wherein the privacy area of the display panel comprises a first area and a second area, the first area comprises a first light shielding part of a light shielding layer and a first electrode, and the second area comprises a first opening of the light shielding layer and a second electrode; in a privacy mode, the first electrode drives the liquid crystal of the first area to deflect to a first direction, and the second electrode drives the liquid crystal of the second area to deflect to a second direction, the first direction is different from the second direction, and the second direction is parallel to the absorption axis of a first polarizer; at this time, the liquid crystal of the first area is in a light transmission state, and the liquid crystal of the second area is in a light shielding state; and the boundary position of the liquid crystal of the second area in the privacy mode can be accurately controlled through a post-program debugging, so that the problems of normal view light leakage and unsymmetrical left and right white state privacy effect when the white state privacy is realized by the first light shielding part are avoided.

Description

Technical Field

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

[0002] With the continuous development of science and technology, thin film transistor liquid crystal displays (TFT-LCDs) have the characteristics of small size, low power consumption, and no radiation. In recent years, they have developed rapidly and occupy a dominant position in the current flat panel display market.

[0003] However, with social development and improved material conditions, while display devices provide people with many conveniences, privacy leaks are inevitable. In existing technologies, the two types of privacy protection technologies commonly used include white-state privacy protection and black-state privacy protection. Among them, the white-state privacy protection technology currently has complex display panel manufacturing processes, high costs, and poor visual effects. Summary of the Invention

[0004] In view of this, in order to solve the above problems, the present invention provides a display panel and a display device, the technical solution of which is as follows:

[0005] A display panel includes a plurality of sub-pixel regions, each sub-pixel region including a display area and a privacy area.

[0006] The display panel includes a first polarizer, a light-shielding layer, and a liquid crystal layer;

[0007] The first polarizer and the light-shielding layer are located on the side of the liquid crystal layer closer to the light-emitting surface of the display panel;

[0008] The privacy shielding area includes a first light-shielding part and a first opening, and the privacy shielding area includes a first electrode and a second electrode;

[0009] The privacy protection area includes a first area and a second area. The first area includes the first light-blocking part and the first electrode, and the second area includes the first opening and the second electrode.

[0010] The display panel has a display mode and a privacy mode;

[0011] In the privacy mode, the first electrode drives the liquid crystal in the first region to deflect in a first direction, and the second electrode drives the liquid crystal in the second region to deflect in a second direction, wherein the first direction is different from the second direction, and the second direction is parallel to the absorption axis of the first polarizer.

[0012] A display device comprising the display panel described in any of the preceding claims.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0014] The present invention provides a privacy screen in a display panel comprising a first region and a second region. The first region includes a first light-shielding part of a light-shielding layer and a first electrode. The second region includes a first opening of a light-shielding layer and a second electrode. In privacy mode, the first electrode drives the liquid crystal in the first region to deflect in a first direction, and the second electrode drives the liquid crystal in the second region to deflect in a second direction. The first direction and the second direction are different, and the second direction is parallel to the absorption axis of the first polarizer. At this time, the liquid crystal in the first region is in a light-transmitting state, and the liquid crystal in the second region is in a light-shielding state. That is to say, compared with the prior art, this display panel does not need to set two light-shielding layers. Instead, it achieves a dark liquid crystal area by controlling the deflection of the liquid crystal in the second region based on the second electrode. This dark liquid crystal area is equivalent to a light-shielding layer. Obviously, based on this dark liquid crystal area and the light-shielding layer, the white-state privacy of the display panel can be achieved. Furthermore, the boundary position of the dark liquid crystal area in privacy mode can be precisely controlled through subsequent program debugging to ensure that there is no problem of light leakage when viewed directly or asymmetry of the white-state privacy effect when achieving white-state privacy with the first light-shielding part. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a cross-section of a display panel used in existing white-state privacy protection technology;

[0017] Figure 2 For based on Figure 1 The diagram shows the privacy protection effect of the display panel in white mode.

[0018] Figure 3 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0019] Figure 4 A cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention;

[0020] Figure 5 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0021] Figure 6 A schematic diagram of light emission in which the width of the first light-shielding part is too wide in the second direction is provided in an embodiment of the present invention;

[0022] Figure 7 A schematic diagram of light emission in a second direction where the width of the first light-shielding part is too narrow, provided as an embodiment of the present invention;

[0023] Figure 8 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0024] Figure 9 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0025] Figure 10 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0026] Figure 11 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Based on the content recorded in the background art, refer to Figure 1 , Figure 1 This is a schematic diagram of a cross-section of a display panel for privacy protection in the prior art, for reference. Figure 2 , Figure 2 For based on Figure 1 The diagram shown illustrates the privacy protection effect of the display panel in white mode. Figure 1 As shown, white-state privacy protection is achieved by setting two staggered light-shielding layers (BM1 and BM2) on the light-emitting side of the display panel. However, this white-state privacy protection technology requires extremely high positional accuracy for the two staggered light-shielding layers; otherwise, as... Figure 1 and Figure 2 This will result in issues such as light leakage when viewed directly and asymmetry in the privacy protection effect on the left and right sides, affecting the normal display of the display panel.

[0030] Furthermore, the design of the light-shielding layer, which requires extremely high positioning accuracy, will greatly increase the manufacturing difficulty of the display panel, thereby increasing the production cost of the display panel.

[0031] Based on this, the present invention provides a novel display panel structure. Compared with the prior art, it does not require two light-shielding layers. Instead, it achieves a dark area of ​​liquid crystal (i.e., the liquid crystal is in a light-shielding state) by controlling the deflection of liquid crystal with electrodes. This dark area of ​​liquid crystal is equivalent to a light-shielding layer. Obviously, the white-state privacy protection of the display panel can be achieved based on this dark area of ​​liquid crystal and a light-shielding layer. Furthermore, the boundary position of the dark area of ​​liquid crystal in the privacy protection mode can be precisely controlled through subsequent program debugging, ensuring that there is no problem of light leakage when looking directly or asymmetry of the white-state privacy protection effect when achieving white-state privacy protection with the light-shielding layer.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. The display panel 100 includes a plurality of sub-pixel regions 10. Each sub-pixel region 10 includes a display area 11 and a privacy area 12. Sub-pixels are formed in the display area 11. In order to achieve full-color display of the display panel, the plurality of sub-pixels may optionally include sub-pixels for emitting green light, sub-pixels for emitting blue light, and sub-pixels for emitting red light.

[0034] refer to Figure 4 , Figure 4 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of the present invention. It should be noted that... Figure 4 For based on Figure 3 A cross-sectional schematic diagram along the BB' direction shows that the display panel 100 includes: a first polarizer 13, a light-shielding layer 14, and a liquid crystal layer 15.

[0035] The first polarizer 13 and the light-shielding layer 14 are located on the side of the liquid crystal layer 15 near the light-emitting surface of the display panel 100.

[0036] The light-shielding layer 14 of the privacy area 12 includes a first light-shielding part 141 and a first opening 142. The privacy area 12 includes a first electrode 16 and a second electrode 17. There is a first opening 142 between two adjacent first light-shielding parts 141. The first opening 142 is located above the liquid crystal area of ​​the second region 122 to achieve white-state privacy.

[0037] The privacy protection area 12 includes a first area 121 and a second area 122. The first area 121 includes the first light-shielding part 141 and the first electrode 16. The second area 122 includes the first opening 142 and the second electrode 17.

[0038] The display panel 100 has a display mode and a privacy mode.

[0039] In the privacy mode, the first electrode 16 drives the liquid crystal in the first region 121 to deflect in a first direction, and the second electrode 17 drives the liquid crystal in the second region 122 to deflect in a second direction, wherein the first direction is different from the second direction, and the second direction is parallel to the absorption axis of the first polarizer 13.

[0040] Specifically, in another embodiment of the present invention, the first polarizer 13 is located on the side of the light-shielding layer 14 opposite to the liquid crystal layer 15, such as... Figure 4 The display panel 100 shown also includes an array layer 18 located on the side of the liquid crystal layer 15 away from the first polarizer 13. The array layer 18 is provided with thin-film transistors, and the circuit formed by the thin-film transistors is used to provide corresponding signals to the first electrode 16 and the second electrode 17 to achieve different functions.

[0041] The display panel 100 has a display mode and a privacy mode. In the display mode, the display area 11 is used for normal illumination, and the privacy area 12 can be illuminated or not. In the privacy mode, the display area 11 is used for normal illumination, and the privacy area 12 does not illuminate at small viewing angles, but illuminates at large viewing angles.

[0042] Furthermore, such as Figure 4 As shown, in the privacy mode, the first electrode 16 drives the liquid crystal in the first region 121 to deflect in a first direction, and the second electrode 17 drives the liquid crystal in the second region 122 to deflect in a second direction. The first direction and the second direction are different, and the second direction is parallel to the absorption axis of the first polarizer 13. That is, the liquid crystal in the first region 121 is in a light-transmitting state, while the liquid crystal in the second region 122 is in a light-blocking state. At this time, the liquid crystal in the second region 122 acts as a light-blocking layer, thus blocking the light emitted by the backlight module in the display panel 100. The light can only travel from the liquid crystal in the first area 121 to the light-emitting side of the display panel 100. Due to the setting of the first light-shielding part 141, the light emitted from the liquid crystal in the first area 121 is blocked by the first light-shielding part 141. Only a portion of the light with a wide viewing angle is emitted from the first opening to the light-emitting surface of the display panel 100. In this way, only viewers within a wide viewing angle range can feel the light emitted from the privacy area, while viewers at other viewing angles will not feel the light emitted from the privacy area. Thus, the normal display of the display panel 100 will not be affected in privacy mode, thereby achieving white-state privacy protection of the display panel 100.

[0043] Furthermore, the display panel structure provided in this embodiment of the invention does not require two light-shielding layers compared to existing technical solutions. Instead, it achieves a liquid crystal dark area by controlling the deflection of the liquid crystal in the second region 122 based on the second electrode 17. This liquid crystal dark area is equivalent to a light-shielding layer, thereby reducing the need for one light-shielding layer. Obviously, based on this liquid crystal dark area and only one light-shielding layer, the white-state privacy protection of the display panel 100 can be achieved. Moreover, the boundary position of the liquid crystal dark area in the privacy protection mode can be precisely controlled through subsequent program debugging, ensuring that there is no problem of light leakage when viewed directly or asymmetry in the white-state privacy protection effect when achieving white-state privacy protection with the first light-shielding part 141.

[0044] Furthermore, since the setting of a light-shielding layer is reduced in the embodiment of the present invention, a corresponding color resist layer can also be set in the second region 122 to increase the effective display area of ​​the display panel 100 in the display mode. In other words, the opening area can also be increased to improve the light output brightness, thereby improving the display uniformity.

[0045] Optionally, in another embodiment of the invention, in the privacy mode, the first direction is perpendicular to the absorption axis of the first polarizer.

[0046] Specifically, in this embodiment of the invention, since the light emitted by the backlight module in the privacy mode needs to be emitted outward through the liquid crystal of the first region 121 to achieve privacy, in this embodiment of the invention, the deflection direction of the liquid crystal of the first region 121 is perpendicular to the absorption axis of the first polarizer 13 in the privacy mode, ensuring that the liquid crystal of the first region 121 is in a fully transparent state, so as to minimize its influence on the transmitted light, thereby maximizing the white-state privacy effect of the display panel 100 in the privacy mode.

[0047] Optionally, in another embodiment of the present invention, the first electrode 16 is connected to the first integrated circuit, and the second electrode 17 is connected to the second integrated circuit.

[0048] In the privacy mode, the first electrode 16 receives a first voltage from the first integrated circuit, and the second electrode 17 receives a second voltage from the second integrated circuit. The first voltage is different from the second voltage; the first voltage is a white state voltage, and the second voltage is a black state voltage.

[0049] Specifically, in this embodiment of the invention, at least a portion of the circuit structure of the first integrated circuit includes thin-film transistors in the array layer 18, and at least a portion of the circuit structure of the second integrated circuit includes thin-film transistors in the array layer 18. The first integrated circuit is used to send a voltage signal to the first electrode 16, and the second integrated circuit is used to send a voltage signal to the second electrode 17. That is, by using two independent integrated circuits to send their respective required voltage signals to the first electrode 16 and the second electrode 17, interference between signals is avoided, and the accuracy of the voltage signals received by the first electrode 16 and the second electrode 17 is improved, thereby improving the white-state privacy protection effect of the display panel 100 in privacy protection mode.

[0050] In the privacy mode, the first electrode 16 drives the liquid crystal of the first region 121 to deflect in a first direction based on the received white state voltage, so that the liquid crystal of the first region 121 is in a light-transmitting state; in the privacy mode, the second electrode 17 drives the liquid crystal of the second region 122 to deflect in a second direction based on the received black state voltage, so that the liquid crystal of the second region 122 is in a light-blocking state.

[0051] Optionally, the first voltage is 5V and the second voltage is 0V.

[0052] Optionally, in another embodiment of the invention, such as Figure 4 As shown, the first region 121 has the second region 122 on both sides along the second direction.

[0053] Specifically, in this embodiment of the invention, a second region 122 is provided on each side of the first region 121 to ensure the symmetry of the structure, thereby ensuring that the light output effect of the display panel 100 in the wide viewing angle is consistent on both sides in the privacy mode, and ensuring that the privacy effect of the display panel 100 in the white state is symmetrical, so as to comprehensively improve the privacy effect of the display panel 100 in the white state.

[0054] Optionally, in another embodiment of the invention, reference is made to... Figure 5 , Figure 5 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0055] In a direction perpendicular to the plane of the liquid crystal layer 15, the distance H between the first light-shielding portion 141 and the liquid crystal layer 15 is:

[0056]

[0057] The width of the first light-shielding part 141 is D, and the thickness of the liquid crystal layer 15 is d.

[0058] Specifically, in this embodiment of the invention, when the display panel 100 is in privacy mode, it is used to ensure that the privacy area 12 does not emit light at small viewing angles but emits light at large viewing angles. Therefore, in this embodiment of the invention, the film layer of the display panel 100 is designed based on the above formula to achieve light emission at a large viewing angle of 60° or greater.

[0059] It should be noted that if the large viewing angle of the display panel 100 in privacy mode is less than 60°, the light emitted at this angle will tend to be emitted towards the side of the normal viewing angle, which will affect the normal display of the display panel 100. Therefore, through multiple actual tests in this embodiment of the invention, it has been determined that the large viewing angle of the display panel 100 at a large viewing angle of greater than or equal to 60° can ensure the privacy effect of the large viewing angle white state without affecting the normal display of the display panel 100.

[0060] Furthermore, if Figure 1 To achieve a wide viewing angle of 60° or more, the existing technical solutions require adjusting the height of the two BM layers in the vertical direction to adjust the light emission angle, which results in a thicker color filter. By comparison, it can be seen that the display panel structure provided by the present invention does not require complicated processes. It can achieve a wide viewing angle of 60° or more in the privacy mode for white privacy protection by using a single BM layer. At the same time, the thickness of the color filter substrate can be made thin.

[0061] Optionally, in another embodiment of the present invention, the area of ​​the first light-shielding portion 141 projected onto the plane where the first electrode is located is a first area, and the area of ​​the liquid crystal in the second region 122 projected onto the plane where the second electrode is located is a second area.

[0062] The ratio of the second area to the first area is in the range of 1:0.5 to 1:2.

[0063] Specifically, in this embodiment of the invention, a ratio of 1:1 between the first area and the second area is preferred for explanation. This is mainly to prevent the width of the liquid crystal in the first light-shielding part 141 and the second area 122 from being too wide in the second direction, so as to prevent excessive blocking of light and thus prevent the light used for privacy from being emitted properly.

[0064] For details, please refer to Figure 6 , Figure 6 This is a schematic diagram of light emission from a first light-shielding portion that is too wide in the second direction, provided as an embodiment of the present invention; see reference. Figure 7 , Figure 7 This is a schematic diagram illustrating the light emission of a first light-shielding portion that is too narrow in the second direction, as provided in an embodiment of the present invention; for example... Figure 6As shown, when the width of the first light-shielding part 141 in the second direction is too wide, the light used for privacy will obviously be blocked by the first light-shielding part 141 and cannot be emitted, thus failing to achieve good privacy in the white state; as Figure 7 As shown, when the width of the first light-shielding part 141 in the second direction is too narrow, the width of the liquid crystal in the second region 122 in the second direction will be correspondingly large. Obviously, the light used for privacy protection will be blocked by the liquid crystal in the second region 122 and cannot be emitted, thus failing to achieve good white-state privacy protection.

[0065] Therefore, in this embodiment of the invention, the ratio between the area of ​​the first light-shielding part 141 projected onto the plane where the first electrode is located and the area of ​​the liquid crystal of the second region 122 projected onto the plane where the second electrode is located is reasonably set, so that the ratio of the second area to the first area is in the range of 1:0.5 to 1:2, so as to ensure that the light used for privacy protection is not blocked by the first light-shielding part 141 and / or the liquid crystal of the second region 122, thereby improving the white-state privacy protection effect of the display panel 100.

[0066] Optionally, in another embodiment of the invention, reference is made to... Figure 8 , Figure 8 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0067] The privacy protection zone 122 includes a color blocking layer 19.

[0068] In the display mode, the second electrode 17 drives the liquid crystal of the second region 122 to deflect to a third direction, and the angle between the third direction and the absorption axis of the first polarizer 13 is α, where 0° < α < 180°.

[0069] Specifically, in this embodiment of the invention, under normal circumstances, the display area 11 of the display panel 100 emits light normally in display mode, while the privacy area 12 does not emit light. However, in this embodiment of the invention, since the privacy area 12 does not perform privacy protection in display mode, it is not effectively utilized. Therefore, a color resist layer 19 can be provided in the privacy area 12, allowing it to display normally in display mode. Furthermore, the color resist layer 19 does not affect the privacy protection effect of the privacy area 12 in privacy mode. Compared to the prior art's two-layer light-shielding design, this embodiment of the invention reduces the number of light-shielding layers. Therefore, a corresponding color resist layer 19 can be provided in the second region 122 to increase the effective display area of ​​the display panel 100 in display mode. In other words, it also increases the opening area, improves the light output brightness, and thus enhances display uniformity. Optionally, in another embodiment of the invention, referring to... Figure 9 , Figure 9 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0070] Within the privacy protection zone 12, the number of the second electrodes 17 is b, where b > 1.

[0071] Specifically, in the embodiments of the present invention, such as Figure 7 The structure shown is that the second electrode 17 located in the privacy area 12 is configured as multiple second electrodes 17, that is, the privacy area 12 is a refined multi-zone electrode design. The more the second electrode 17 is divided, the higher its control precision. Obviously, the better the improvement effect of the left and right white state privacy imbalance and / or the light leakage when looking directly at the screen in the privacy mode of the display panel 100 will be.

[0072] Furthermore, the multiple second electrodes 17 that have been divided are electrically connected to each other, which can effectively reduce resistance. On the other hand, by electrically connecting some of the second electrodes 17, the electrically connected second electrodes 17 can receive the same voltage signal synchronously, thereby enabling some of the second electrodes 17 to be turned on or off synchronously, thus effectively achieving one-button privacy protection and simplifying the control of the second electrodes 17.

[0073] Optionally, in another embodiment of the invention, reference is made to... Figure 10 , Figure 10 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0074] Multiple second electrodes 17 are arranged along the second direction.

[0075] The nth second electrode 17 is located in the first film layer 20, and the (n+1)th second electrode 18 is located in the second film layer 21.

[0076] The first film layer 20 and the second film layer 21 are film layers with different layers.

[0077] Specifically, in the embodiments of the present invention, multiple second electrodes 17 are arranged alternately in the upper and lower film layers, which can set more second electrodes 17 in the effective area, maximize the number of second electrodes 17, make the control precision higher, and greatly improve the white state privacy protection effect of the display panel 100 in privacy protection mode.

[0078] Optionally, in another embodiment of the invention, reference is made to... Figure 11 , Figure 11 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention.

[0079] In a direction perpendicular to the plane of the liquid crystal layer 15, the orth projection of the nth second electrode 17 overlaps with the (n+1)th second electrode 17.

[0080] Specifically, in this embodiment of the invention, in the direction perpendicular to the plane where the liquid crystal layer 15 is located, the orthographic projection of the nth second electrode 17 overlaps with the (n+1)th second electrode 17, that is, the orthographic projections of two adjacent second electrodes 17 overlap, ensuring that the liquid crystal between two adjacent second electrodes 17 can also be effectively driven, preventing the situation where some liquid crystal in the second region 122 cannot be effectively driven, thereby preventing light leakage in the second region 122 in the privacy mode, thereby improving the white-state privacy effect of the display panel 100.

[0081] Optionally, based on all the above embodiments of the present invention, a display device is also provided in another embodiment of the present invention, with reference to... Figure 12 , Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention.

[0082] The display device 111 includes the display panel 100 described in the above embodiments.

[0083] Since the display device 111 provided in the embodiments of the present invention includes any of the display panels 100 provided in the above embodiments, the display device 111 has the same or corresponding technical effects as the display panels 100 provided in the above embodiments.

[0084] The display device 111 can specifically be a mobile phone, computer, or other electronic device.

[0085] The above provides a detailed description of the display panel and display device provided by 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 method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

[0086] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0087] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that elements inherent to a process, method, article, or apparatus that comprises a list of elements, or elements inherent to such processes, methods, articles, or apparatus, are also included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, The display panel includes multiple sub-pixel areas, each sub-pixel area comprising a display area and a privacy screen area. The display panel includes a first polarizer, a light-shielding layer, and a liquid crystal layer; The first polarizer and the light-shielding layer are located on the side of the liquid crystal layer closer to the light-emitting surface of the display panel; The privacy shielding area includes a first light-shielding part and a first opening, and the privacy shielding area includes a first electrode and a second electrode; The privacy protection area includes a first area and a second area. The first area includes the first light-blocking part and the first electrode, and the second area includes the first opening and the second electrode. The display panel has a display mode and a privacy mode; In the privacy mode, the first electrode drives the liquid crystal in the first region to deflect in a first direction based on the received white state voltage, so that the liquid crystal in the first region is in a light-transmitting state, and the second electrode drives the liquid crystal in the second region to deflect in a second direction based on the received black state voltage, so that the liquid crystal in the second region is in a light-blocking state, wherein the first direction and the second direction are different, and the second direction is parallel to the absorption axis of the first polarizer. In a direction perpendicular to the plane of the liquid crystal layer, the distance between the first light-shielding portion and the liquid crystal layer for: ； Wherein, the width of the first light-shielding part is D, and the thickness of the liquid crystal layer is d.

2. The display panel according to claim 1, characterized in that, In the privacy mode, the first direction is perpendicular to the absorption axis of the first polarizer.

3. The display panel according to claim 1, characterized in that, The first electrode is connected to the first integrated circuit, and the second electrode is connected to the second integrated circuit; In the privacy mode, the first electrode receives a first voltage from the first integrated circuit, and the second electrode receives a second voltage from the second integrated circuit, wherein the first voltage and the second voltage are different, the first voltage is a white state voltage, and the second voltage is a black state voltage.

4. The display panel according to claim 3, characterized in that, The first voltage is 5V, and the second voltage is 0V.

5. The display panel according to claim 1, characterized in that, The first region has the second region on both sides along the second direction.

6. The display panel according to claim 1, characterized in that, The area of ​​the first light-shielding portion projected onto the plane where the first electrode is located is the first area, and the area of ​​the second region liquid crystal projected onto the plane where the second electrode is located is the second area. The ratio of the second area to the first area is in the range of 1:0.5 to 1:

2.

7. The display panel according to claim 1, characterized in that, The privacy protection area includes a color blocking layer; In the display mode, the second electrode drives the liquid crystal in the second region to deflect in a third direction, and the angle between the third direction and the absorption axis of the first polarizer is α, where 0° < α < 180°.

8. The display panel according to claim 1, characterized in that, Within the privacy protection zone, the number of the second electrodes is b, where b > 1.

9. The display panel according to claim 1, characterized in that, Multiple second electrodes are arranged along the second direction; The nth second electrode is located in the first film layer, and the (n+1)th second electrode is located in the second film layer; The first film layer and the second film layer are film layers with different layers.

10. The display panel according to claim 9, characterized in that, In a direction perpendicular to the plane of the liquid crystal layer, the orth projection of the nth second electrode overlaps with the (n+1)th second electrode.

11. A display device, characterized in that, The display device includes the display panel as described in any one of claims 1-10.

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