Multifunctional display panel, display device and driving method

Abstract

The invention discloses a multifunctional display panel, a display device and a driving method.The multifunctional display panel comprises a dimming box, an electronic ink screen and a color display screen which are sequentially arranged in a stacked mode; the electronic ink screen comprises an opposed substrate, a first array substrate and an ink capsule, a first pixel electrode is arranged on the first array substrate, a first common electrode matched with the first pixel electrode is arranged on the opposed substrate, a first side electrode and a second side electrode which are parallel to each other are arranged between the opposed substrate and the first array substrate, and the ink capsule is arranged between the first side electrode and the second side electrode. The first side electrodes and the second side electrodes are alternately arranged, and the ink capsules are located between the adjacent first side electrodes and second side electrodes. The display panel not only can realize wide and narrow view angle switching, but also can realize switching between reflection display of a black-and-white picture and transmission display of a color picture, can also realize a high-contrast display mode, and is wide in function so as to be suitable for more use scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of displays, and in particular to a multifunctional display panel, a display device and a driving method. Background Art

[0002] With the continuous advancement of LCD technology, the viewing angle of displays has been widened from approximately 120° to over 160°. While people enjoy the visual experience brought by a wide viewing angle, they also want to effectively protect business secrets and personal privacy to avoid commercial losses or embarrassment caused by the leakage of screen information. Therefore, in addition to the demand for a wide viewing angle, many situations also require display devices to be able to switch between wide and narrow viewing angles.

[0003] Currently, the main method used is to attach a louver film to the display screen to achieve wide and narrow viewing angle switching. When privacy protection is needed, the screen can be covered with the louver film to narrow the viewing angle. However, this method requires additional louver film, which causes great inconvenience to the user. Moreover, a piece of louver film can only achieve one viewing angle. Once the louver film is attached, the viewing angle is fixed in the narrow viewing angle mode, making it impossible to switch freely between the wide and narrow viewing angle modes. In addition, the privacy film will reduce the brightness and affect the display effect.

[0004] Existing display screens require a backlight module to provide backlight. In bright ambient light, the images displayed on the display screen are difficult to see clearly, and the backlight module consumes a lot of power. Therefore, electronic paper displays have become a popular display that meets public demand. Electronic paper displays can use external light sources to display images, unlike LCD displays that require an additional backlight. Therefore, even in strong outdoor sunlight, the information on the electronic paper can still be clearly seen without viewing angle issues. Due to their advantages such as power saving, high reflectivity and contrast ratio, electronic paper displays are now widely used in e-readers (such as e-books and e-newspapers) and other electronic components (such as price tags). However, electronic paper displays do not function properly in low ambient light.

[0005] Display screens rely solely on backlight modules for backlighting, while electronic paper displays rely solely on ambient light for illumination. Furthermore, after production, both displays can only display color or black and white. Consequently, conventional displays cannot freely switch between displaying color via a transmitted backlight and displaying black and white via reflected ambient light. Furthermore, both transmissive and reflective displays exhibit relatively low contrast, making high-contrast displays impossible. Summary of the Invention

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a multifunctional display panel, a display device and a driving method to solve the problem in the prior art that the display device cannot simultaneously realize arbitrary switching between displaying a color image by transmitting a backlight source and displaying a black and white image by reflecting ambient light, freely switching between a wide viewing angle mode and a narrow viewing angle mode, and switching between a high contrast display and a low contrast display.

[0007] The purpose of the present invention is achieved through the following technical solutions: The present invention provides a multifunctional display panel, comprising a dimming box, an electronic ink screen, and a color display screen, which are stacked in sequence. The dimming box is arranged on the light-emitting side of the electronic ink screen, and the electronic ink screen is arranged on the light-emitting side of the color display screen. The dimming box includes a first substrate, a second substrate disposed opposite to the first substrate, and a polymer dispersed liquid crystal layer located between the first substrate and the second substrate, wherein the first substrate is provided with a first control electrode, and the second substrate is provided with a second control electrode cooperating with the first control electrode; The electronic ink screen includes an opposing substrate, a first array substrate arranged opposite to the opposing substrate, and ink capsules located between the opposing substrate and the first array substrate. All of the ink capsules contain black ink particles and white ink particles of opposite polarities. The first array substrate is provided with a first pixel electrode, and the opposing substrate is provided with a first common electrode that cooperates with the first pixel electrode. First and second side electrodes, which are parallel to each other, are provided between the opposing substrate and the first array substrate. The first and second side electrodes are alternately arranged, and the ink capsules are located between adjacent first and second side electrodes.

[0008] Furthermore, the dimming box has a plurality of dimming areas distributed in an array, the second control electrodes are block electrodes corresponding to the dimming areas one by one, and the second control electrodes are insulated and spaced apart from each other and are independently controlled.

[0009] Furthermore, a plurality of first scan lines, a plurality of first data lines and a plurality of first thin film transistors are provided on the second substrate, the plurality of first scan lines and the plurality of first data lines are cross-insulated from each other and define a plurality of dimming areas, and the second control electrode is conductively connected to the first scan lines and the first data lines adjacent to the first thin film transistors through the first thin film transistors.

[0010] Furthermore, the dimming box has a plurality of first pixel units distributed in an array, and the first pixel units correspond to the dimming areas one by one; The color display screen has a plurality of second pixel units distributed in an array, and the second pixel units correspond to the first pixel units one by one.

[0011] Furthermore, the first array substrate is provided with a plurality of second scan lines, a plurality of second data lines, a plurality of second thin film transistors, and a plurality of third thin film transistors. The plurality of second scan lines and the plurality of second data lines are intersected and insulated from each other and define a plurality of first pixel units. The first pixel electrodes and the first side electrodes each correspond to the first pixel units one-to-one. The first pixel electrode is conductively connected to the second scan line and the second data line adjacent to the second thin film transistor through the second thin film transistor. The first side electrode is conductively connected to the second scan line and the second data line adjacent to the third thin film transistor through the third thin film transistor. Any of the first pixel electrodes and the first side electrodes are respectively connected to two different second scan lines and / or two different second data lines.

[0012] Furthermore, the first pixel electrode includes a first sub-pixel electrode block and a second sub-pixel electrode block that are independent of each other, and each of the first pixel units is provided with two second thin-film transistors, and the first sub-pixel electrode block and the second sub-pixel electrode block are each electrically connected to the corresponding second scanning line and the second data line through a second thin-film transistor.

[0013] Furthermore, the color display screen includes a color filter substrate, a second array substrate arranged opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the second array substrate, wherein the second array substrate is provided with a second pixel electrode and a second common electrode cooperating with the second pixel electrode; A first polarizer is provided on the color filter substrate, and a second polarizer is provided on the array substrate. Transmission axes of the first polarizer and the second polarizer are perpendicular to each other.

[0014] The present application also provides a display device, comprising the multifunctional display panel as described above.

[0015] The present application also provides a driving method for a multifunctional display panel, for driving the multifunctional display panel as described above, the driving method comprising: In the wide-viewing angle transmissive display mode, the color display screen is controlled to display an image, the polymer dispersed liquid crystal layer in the dimming box is in a foggy state, and at least the electronic ink screen corresponding to the bright state area is in a light-transmitting state; In the narrow viewing angle transmissive display mode, the color display screen is controlled to display an image, the polymer dispersed liquid crystal layer in the dimming box is in a transparent state, and at least the electronic ink screen corresponding to the bright state area is in a light-transmitting state; In the high-contrast transmissive display mode, the color display screen is controlled to display an image, the electronic ink screen corresponding to the dark state area is in a light-absorbing state, and the electronic ink screen corresponding to the bright state area is in a light-transmitting state; In the reflective display mode, the color display screen is controlled to be turned off, and the electronic ink screen is controlled to display a black and white image.

[0016] Furthermore, the dimming box has a plurality of dimming areas distributed in an array and independently controlled, the dimming box has a plurality of first pixel units distributed in an array, the first pixel units correspond one-to-one to the dimming areas, and the driving method includes: In the diffuse reflection display mode, the dimming box corresponding to the dark state area is transparent, and the dimming box corresponding to the bright state area is foggy; In the regional anti-peep mode, the color display screen is controlled to display an image, the polymer dispersed liquid crystal layer in the dimming box corresponding to the wide viewing angle area is in a foggy state, the polymer dispersed liquid crystal layer in the dimming box corresponding to the narrow viewing angle area is in a transparent state, and at least the electronic ink screen corresponding to the bright state area is in a light-transmitting state.

[0017] The beneficial effects of the present invention are that the dimming box, the electronic ink screen and the color display screen are stacked in sequence, and the ink capsules are controlled to switch between the light-transmitting state, the light-absorbing state and the light-reflecting state through the first common electrode, the first pixel electrode, the first side electrode and the second side electrode, so that the multifunctional display panel can not only achieve wide and narrow viewing angle switching, but also switch between reflective display of black and white images and transmissive display of color images, and can also achieve high-contrast display mode, with a wide range of functions to be suitable for more usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 3 is a schematic structural diagram of the display device in the initial state in the first embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the planar structure of the second substrate in the first embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the planar structure of the first array substrate in the first embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the planar structure of the first side electrode and the second side electrode in the first embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the planar structure of the second array substrate in the first embodiment of the present invention.

[0023] Figure 63 is a schematic structural diagram of the display device in the first embodiment of the present invention in a wide viewing angle transmissive display mode.

[0024] Figure 7 3 is a schematic structural diagram of the display device in the narrow viewing angle transmissive display mode according to the first embodiment of the present invention.

[0025] Figure 8 2 is a schematic structural diagram of the display device in the area anti-peeping mode in the first embodiment of the present invention.

[0026] Figure 9 1 is a schematic structural diagram of the display device in the first embodiment of the present invention in a medium-contrast, wide-viewing-angle transmissive display mode.

[0027] Figure 10 1 is a schematic structural diagram of the display device in the first embodiment of the present invention in a medium-contrast, narrow-viewing-angle transmissive display mode.

[0028] Figure 11 3 is a schematic structural diagram of the display device in the first embodiment of the present invention in a high-contrast, wide-viewing-angle transmissive display mode.

[0029] Figure 12 1 is a schematic structural diagram of the display device in the first embodiment of the present invention in a high-contrast, narrow-viewing-angle transmissive display mode.

[0030] Figure 13 3 is a schematic structural diagram of the display device in the diffuse reflection display mode according to the first embodiment of the present invention.

[0031] Figure 14 3 is a schematic structural diagram of the display device in the ordinary reflective display mode in the first embodiment of the present invention.

[0032] Figure 15 It is a schematic structural diagram of the display device in the initial state in the second embodiment of the present invention.

[0033] Figure 16 It is a schematic structural diagram of the display device in the initial state in the third embodiment of the present invention.

[0034] Figure 17 It is a schematic diagram of the planar structure of the first array substrate in the third embodiment of the present invention.

[0035] Figure 18 This is one of the planar structural diagrams of the display device in the present invention.

[0036] Figure 19 This is the second schematic diagram of the planar structure of the display device in the present invention. DETAILED DESCRIPTION

[0037] To further illustrate the technical means and effects of the present invention to achieve the intended purpose, the following describes in detail the specific implementation, structure, features, and effects of the multifunctional display panel, display device, and driving method according to the present invention, in conjunction with the accompanying drawings and preferred embodiments. [Example 1] Figure 1 3 is a schematic structural diagram of the display device in the initial state in the first embodiment of the present invention. Figure 2 It is a schematic diagram of the planar structure of the second substrate in the first embodiment of the present invention. Figure 3 It is a schematic diagram of the planar structure of the first array substrate in the first embodiment of the present invention. Figure 4 Schematic diagram of the planar structure of the first side electrode and the second side electrode in the first embodiment of the present invention. Figure 5 It is a schematic diagram of the planar structure of the second array substrate in the first embodiment of the present invention.

[0038] like Figures 1 to 5 As shown, a multifunctional display panel provided by the first embodiment of the present invention includes a dimming box 10, an electronic ink screen 20 and a color display screen 30 stacked in sequence. The dimming box 10 is arranged on the light-emitting side of the electronic ink screen 20, and the electronic ink screen 20 is arranged on the light-emitting side of the color display screen 30, that is, the electronic ink screen 20 is arranged between the dimming box 10 and the color display screen 30, and the dimming box 10 is arranged on the side of the multifunctional display panel close to the external environment.

[0039] The dimming box 10 includes a first substrate 11, a second substrate 12 disposed opposite the first substrate 11, and a polymer dispersed liquid crystal (PDLC) layer 13 located between the first and second substrates 11, 12. In this embodiment, the first substrate 11 is located on the side of the dimming box 10 closest to the external environment, and the second substrate 12 is located on the side of the dimming box 10 closest to the electronic ink display 20. Alternatively, the second substrate 12 can be located on the side of the dimming box 10 closest to the external environment, while the first substrate 11 is located on the side of the dimming box 10 closest to the electronic ink display 20. A first control electrode 111 is provided on the first substrate 11, and a second control electrode 121 is provided on the second substrate 12, which cooperates with the first control electrode 111. The first and second control electrodes 111, 121 are used to control the polymer dispersed liquid crystal layer 13 to switch between a foggy and transparent state. When the voltage difference between the first control electrode 111 and the second control electrode 121 is less than a first preset value, the polymer dispersed liquid crystal layer 13 is in a foggy state and has a light-scattering effect. When the voltage difference between the first control electrode 111 and the second control electrode 121 is greater than a second preset value, the polymer dispersed liquid crystal layer 13 is in a transparent state. The smaller the voltage difference between the first control electrode 111 and the second control electrode 121, the closer the polymer dispersed liquid crystal layer 13 is to a foggy state. Conversely, the larger the voltage difference between the first control electrode 111 and the second control electrode 121, the closer the polymer dispersed liquid crystal layer 13 is to a transparent state. The polymer dispersed liquid crystal layer 13 has a light-scattering effect in the foggy state, while the polymer dispersed liquid crystal layer 13 does not change the light emission angle in the transparent state.

[0040] In this embodiment, Figure 1 and Figure 2As shown, the dimming box 10 has multiple dimming areas P1 distributed in an array. The second control electrodes 121 are block-shaped electrodes corresponding to the dimming areas P1 one by one. Each second control electrode 121 is insulated and spaced apart from each other and independently controlled. Specifically, the second substrate 12 is provided with multiple first scan lines 101, multiple first data lines 102, and multiple first thin-film transistors 103. The multiple first scan lines 101 and the multiple first data lines 102 are arranged in an insulated manner and cross-linked to form multiple dimming areas P1. Each dimming area P1 is provided with a corresponding second control electrode 121. The second control electrode 121 is conductively connected to the first scan line 101 and the first data line 102 adjacent to the first thin-film transistor 103 through the first thin-film transistor 103, so that each second control electrode 121 can be independently controlled. Among them, the first thin film transistor 103 includes a first gate, a first active layer, a first drain and a first source. The first gate and the first scan line 101 are located in the same layer and are electrically connected. The first gate and the first active layer are separated by an insulating layer. The first source is electrically connected to the first data line 102, and the first drain is electrically connected to the second control electrode 121 through a contact hole.

[0041] The electronic ink screen 20 includes an opposing substrate 21, a first array substrate 22 disposed opposite the opposing substrate 21, and ink capsules 23 located between the opposing substrate 21 and the first array substrate 22. In this embodiment, the opposing substrate 21 is located on the side of the electronic ink screen 20 near the dimming box 10, and the first array substrate 22 is located on the side of the electronic ink screen 20 near the color display 30. Alternatively, the first array substrate 22 can be located on the side of the electronic ink screen 20 near the dimming box 10, and the opposing substrate 21 on the side of the electronic ink screen 20 near the color display 30. All ink capsules 23 contain black ink particles 231 and white ink particles 232 of opposite polarity. The ink capsules 23 also contain an electrophoretic fluid, within which the black ink particles 231 and white ink particles 232 are disposed. By applying electric fields of different directions to the ink capsules 23, the black ink particles 231 and white ink particles 232 can move in corresponding directions. For example, black ink particles 231 are negatively charged and white ink particles 232 are positively charged, causing white ink particles 232 to move in the direction of the electric field and black ink particles 231 to move in the opposite direction of the electric field. If an upward electric field is applied, white ink particles 232 move upward and black ink particles 231 move downward; if a downward electric field is applied, white ink particles 232 move downward and black ink particles 231 move upward; if a leftward electric field is applied, white ink particles 232 move left and black ink particles 231 move right; if a rightward electric field is applied, white ink particles 232 move right and black ink particles 231 move left. Of course, black ink particles 231 can also be positively charged and white ink particles 232 negatively charged, causing black ink particles 231 to move in the direction of the electric field and white ink particles 232 to move in the opposite direction of the electric field.

[0042] The dimming box 10 has a plurality of first pixel units P2 arranged in an array, each of which contains an ink capsule 23. The first pixel units P2 correspond one-to-one with the dimming areas P1. Of course, in other embodiments, multiple first pixel units P2 may correspond to one dimming area P1, or one first pixel unit P2 may correspond to multiple dimming areas P1.

[0043] The first array substrate 22 is provided with a first pixel electrode 221 corresponding one-to-one with each first pixel unit P2. The opposing substrate 21 is provided with a first common electrode 211 that cooperates with the first pixel electrode 221. By controlling the voltage polarity on the first pixel electrode 221, the direction of the electric field between the first pixel electrode 221 and the first common electrode 211 is controlled, thereby controlling the ink capsule 23 to switch between a black state (light-absorbing state) and a white state (light-reflecting state). For example, if a 0V common voltage is applied to the first common electrode 211, if a positive voltage is applied to the first pixel electrode 221, the direction of the electric field between the first pixel electrode 221 and the first common electrode 211 is upward; if a negative voltage is applied to the first pixel electrode 221, the direction of the electric field between the first pixel electrode 221 and the first common electrode 211 is downward. The first common electrode 211 may be a planar electrode that covers the entire surface of the opposing substrate 21; the first common electrode 211 may also be a block electrode corresponding one-to-one to the first pixel unit P2, and then multiple block electrodes are connected together through wires and a common voltage is applied to them.

[0044] Parallel first side electrodes 241 and second side electrodes 242 are provided between the counter substrate 21 and the first array substrate 22. The first side electrodes 241 and the second side electrodes 242 are arranged alternately. The ink capsules 23 are located between adjacent first side electrodes 241 and second side electrodes 242. The polarity of the voltages on the first and second side electrodes 241 and 242 controls the direction of the electric field between the first and second side electrodes 241 and 242, thereby enabling the ink capsules 23 to achieve a light-transmitting state. Each first pixel unit P2 has a first side electrode 241 and a second side electrode 242 provided on its inner side surface. Alternatively, each first pixel unit P2 has a first side electrode 241 provided on its inner side surface, and two adjacent first pixel units P2 share a second side electrode 242. This allows the first and second side electrodes 241 and 242 to control the light-transmitting state of each first pixel unit P2. If a negative voltage is applied to the first side electrode 241 and a 0V common voltage is applied to the second side electrode 242, the direction of the electric field between the first side electrode 241 and the second side electrode 242 is from the second side electrode 242 toward the first side electrode 241. If a positive voltage is applied to the first side electrode 241 and a 0V common voltage is applied to the second side electrode 242, the direction of the electric field between the first side electrode 241 and the second side electrode 242 is from the first side electrode 241 toward the second side electrode 242. Therefore, by combining the first pixel electrode 221 and the first common electrode 211 with the first side electrode 241 and the second side electrode 242, each first pixel unit P2 can be controlled to achieve a light-transmitting state, a light-absorbing state (black state), or a light-reflecting state (white state).

[0045] The opposing substrate 21 and the first array substrate 22 are both provided with an insulating layer on the side facing the ink capsule 23 to cover the first common electrode 211 and the first pixel electrode 221 to avoid short circuit between the first side electrode 241 and the second side electrode 242 .

[0046] like Figure 3 As shown, a plurality of second scan lines 201, a plurality of second data lines 202, a plurality of second thin film transistors 203 and a plurality of third thin film transistors 204 are provided on the first array substrate 22. The plurality of second scan lines 201 and the plurality of second data lines 202 are cross-insulated and defined to form a plurality of first pixel units P2. The first pixel electrodes 221 and the first side electrodes 241 both correspond one-to-one to the first pixel units P2. The first pixel electrodes 221 are conductively connected to the second scan lines 201 and the second data lines 202 adjacent to the second thin film transistors 203 through the second thin film transistors 203. The first side electrodes 241 are conductively connected to the second scan lines 201 and the second data lines 202 adjacent to the third thin film transistors 204 through the third thin film transistors 204. The second thin-film transistor 203 includes a second gate, a second active layer, a second drain, and a second source. The second gate is located in the same second layer as the second scan line 201 and is electrically connected to it. The second gate is isolated from the second active layer by an insulating layer. The second source is electrically connected to the second data line 202. The second drain is electrically connected to the first pixel electrode 221 via a contact hole. The third thin-film transistor 204 includes a third gate, a third active layer, a third drain, and a third source. The third gate is located in the same third layer as the second scan line 201 and is electrically connected to it. The third gate is isolated from the third active layer by an insulating layer. The third source is electrically connected to the second data line 202. The third drain is electrically connected to the first side electrode 241 via a contact hole.

[0047] Any first pixel electrode 221 and any first side electrode 241 are respectively connected to two different second scan lines 201 and / or two different second data lines 202, thereby ensuring that each first pixel electrode 221 and each first side electrode 241 can be individually controlled. For example, any first pixel electrode 221 and any first side electrode 241 can be connected to the same second scan line 201 and to two different second data lines 202; or, any first pixel electrode 221 and any first side electrode 241 can be connected to two different second scan lines 201 and to the same second data line 202; or, any first pixel electrode 221 and any first side electrode 241 can be respectively connected to two different second scan lines 201 and to two different second data lines 202.

[0048] In this embodiment, the first pixel electrode 221 includes a first sub-pixel electrode block 221a and a second sub-pixel electrode block 221b that are independent of each other. The first array substrate 22 is provided with a first pixel electrode 221 and two second thin-film transistors 203 in the region corresponding to each first pixel unit P2. Each of the first sub-pixel electrode block 221a and the second sub-pixel electrode block 221b is electrically connected to the second scan line 201 and the second data line 202 adjacent to the second thin-film transistor 203 via a second thin-film transistor 203. The second scan line 201, the second data line 202, and the second thin-film transistor 203 enable the first sub-pixel electrode block 221a and the second sub-pixel electrode block 221b to be independent of each other and to be independently applied with corresponding voltages, thereby enabling the first pixel unit P2 to achieve black / white / gray display.

[0049] Further, such as Figure 4 As shown, the second side electrodes 242 are strip-shaped electrodes, and each second side electrode 242 corresponds to a column of first pixel units P2, that is, a column of first pixel units P2 shares a second side electrode 242, and both the first side electrode 241 and the second side electrode 242 extend along the direction of the first data line 102. Optionally, the first data line 102, the first side electrode 241, and the second side electrode 242 are all located between two columns of first pixel units P2, thereby reducing the impact on the aperture ratio. Of course, in other embodiments, each second side electrode 242 corresponds to a row of first pixel units P2, that is, a row of first pixel units P2 shares a row of second side electrodes 242, and both the first side electrode 241 and the second side electrode 242 extend along the direction of the second scan line 201.

[0050] Furthermore, the first array substrate 22 is provided with a side electrode signal line 243, and all second side electrodes 242 are electrically connected to the side electrode signal line 243, so that a common voltage can be applied to all second side electrodes 242 via the side electrode signal line 243. In other embodiments, the counter substrate 21 may be provided with a side electrode signal line 243, and all second side electrodes 242 may be electrically connected to the side electrode signal line 243; or, both the counter substrate 21 and the first array substrate 22 may be provided with a side electrode signal line 243, and all second side electrodes 242 may be electrically connected to the side electrode signal line 243. Alternatively, all second side electrodes 242 may be electrically connected to the first common electrode 211, so that the same common voltage is applied to the second side electrodes 242 and the first common electrode 211.

[0051] The color display screen 30 includes a color filter substrate 31, a second array substrate 32 disposed opposite the color filter substrate 31, and a liquid crystal layer 33 located between the color filter substrate 31 and the second array substrate 32. In this embodiment, the color filter substrate 31 is disposed on the side of the color display screen 30 near the electronic ink screen 20, and the second array substrate 32 is disposed on the side of the color display screen 30 near the backlight module 50. The color display screen 30 has a plurality of second pixel units P3 distributed in an array, and the second pixel units P3 correspond one-to-one with the first pixel units P2, thereby achieving a better high-contrast display effect. In this embodiment, the liquid crystal layer 33 uses positive liquid crystal molecules, i.e., liquid crystal molecules with positive dielectric anisotropy. In the initial state, the positive liquid crystal molecules in the liquid crystal layer 33 are aligned parallel to the color filter substrate 31 and the second array substrate 32. The positive liquid crystal molecules on the side near the color filter substrate 31 are aligned in an antiparallel direction to the positive liquid crystal molecules on the side near the second array substrate 32. Of course, in other embodiments, the color filter substrate 31 may be provided with a common electrode to form a vertical electric field with the pixel electrodes on the second array substrate 32. The positive liquid crystal molecules on the side of the color filter substrate 31 and the positive liquid crystal molecules on the side of the second array substrate 32 are aligned perpendicular to each other, and the positive liquid crystals are twisted 90 degrees to form a TN display mode. The liquid crystal layer 33 may also use negative liquid crystal molecules, with the positive liquid crystal molecules in the liquid crystal layer 33 aligned perpendicularly to the color filter substrate 31 and the second array substrate 32 to form a VA display mode.

[0052] On the side of the color filter substrate 31 facing the liquid crystal layer 33, a color resist layer 312 and a black matrix (BM) 311 are provided to separate the color resist layer 312. The color resist layer 312 may include, for example, red (R), green (G), and blue (B) color resist materials, which form the red, green, and blue pixel units, respectively. The black matrix 311 is located between the red, green, and blue pixel units, separating adjacent pixel units from each other.

[0053] like Figure 5As shown, on the side of the second array substrate 32 facing the liquid crystal layer 33, a plurality of third scan lines 301 and a plurality of third data lines 302 are insulated and intersected to form a plurality of second pixel units P3. A black matrix 311 corresponds to the third scan lines 301 and the third data lines 302 in a vertical manner. Each pixel unit is provided with a second pixel electrode 322 and a fourth thin-film transistor 303. The second pixel electrode 322 is electrically connected to the third scan line 301 and the third data line 302 adjacent to the fourth thin-film transistor 303 through the fourth thin-film transistor 303. The fourth thin-film transistor 303 includes a fourth gate, a fourth active layer, a fourth drain, and a fourth source. The fourth gate is located on the same layer as the third scan line 301 and is electrically connected to the fourth active layer by an insulating layer. The fourth source is electrically connected to the third data line 302, and the fourth drain is electrically connected to the second pixel electrode 322 via a contact hole.

[0054] In this embodiment, a second common electrode 321 is further provided on the side of the second array substrate 32 facing the liquid crystal layer 33. The second common electrode 321 and the second pixel electrode 322 are located in different layers and are insulated and isolated by an insulating layer. The second common electrode 321 can be located above or below the second pixel electrode 322 ( Figure 1 As shown in the figure, the second common electrode 321 is located below the second pixel electrode 322). Preferably, the second common electrode 321 is a planar electrode provided on the entire surface, and the second pixel electrode 322 is a slit electrode having multiple electrode strips in each pixel unit to form a fringe field switching mode (Fringe Field Switching, FFS). Of course, in other embodiments, the second pixel electrode 322 and the second common electrode 321 are located on the same layer, but the two are insulated and isolated from each other. The second pixel electrode 322 and the second common electrode 321 can each include multiple electrode strips, and the electrode strips of the second pixel electrode 322 and the electrode strips of the second common electrode 321 are arranged alternately to form an in-plane switching mode (In-Plane Switching, IPS). Alternatively, the second array substrate 32 is provided with a second pixel electrode 322 on the side facing the liquid crystal layer 33, and the color filter substrate 31 is provided with a second common electrode 321 on the side facing the liquid crystal layer 33 to form a TN mode or a VA mode. As for other introductions to the TN mode and the VA mode, please refer to the existing technology and will not be repeated here.

[0055] A first polarizer 41 is provided on the color filter substrate 31 , and a second polarizer 42 is provided on the second array substrate 32 . The light transmission axes of the first polarizer 41 and the second polarizer 42 are perpendicular to each other.

[0056] The first substrate 11, the second substrate 12, the opposing substrate 21, the first array substrate 22, the color filter substrate 31, and the second array substrate 32 can be made of transparent substrates such as glass, acrylic, and polycarbonate. The first control electrode 111, the second control electrode 121, the first common electrode 211, the first pixel electrode 221, the second common electrode 321, the second pixel electrode 322, the first side electrode 241, and the second side electrode 242 can be made of transparent electrodes such as indium tin oxide (ITO) or indium zinc oxide (IZO). Of course, the first side electrode 241 and the second side electrode 242 can also be made of an opaque metal material.

[0057] The present invention also provides a display device, comprising the display panel and a backlight module 50 as described above. The backlight module 50 is located below the display panel and is used to provide a backlight source for the display panel. Of course, if the color display screen 30 adopts a self-luminous display, the display device does not need to be equipped with an additional backlight source.

[0058] The backlight module 50 includes a backlight source 51 and an anti-peep layer 53. The anti-peep layer 53 is used to narrow the range of light emission angles. A brightness enhancement film 52 is also provided between the backlight source 51 and the anti-peep layer 53. The brightening film 52 increases the brightness of the backlight module 50. The anti-peep layer 53 is equivalent to a miniature shutter structure, which can block light with a larger incident angle and allow light with a smaller incident angle to pass through, thereby reducing the angle range of light passing through the anti-peep layer 53. The anti-peep layer 53 includes a plurality of parallel light-blocking walls and a light-transmitting hole located between two adjacent light-blocking walls. Light-absorbing materials are provided on both sides of the light-blocking walls. Of course, the backlight source 51 can also be a light-collecting backlight source, so there is no need to set up the anti-peep layer 53, but the light-collecting backlight source is more expensive than the conventional backlight source.

[0059] The backlight module 50 can be an edge-lit backlight module or a direct-lit backlight module. Preferably, the backlight module 50 adopts a collimated backlight (CBL) mode, which can collect light and ensure the display effect.

[0060] A first embodiment of the present invention further provides a method for driving a multifunctional display panel, for driving the multifunctional display panel described above. For example, black ink particles 231 are negatively charged and white ink particles 232 are positively charged, so that the white ink particles 232 move in the direction of the electric field and the black ink particles 231 move in the opposite direction of the electric field. The driving method includes: Figure 6 3 is a schematic structural diagram of the display device in the first embodiment of the present invention in a wide viewing angle transmissive display mode. Figure 9 1 is a schematic structural diagram of the display device in the first embodiment of the present invention in a medium-contrast, wide-viewing-angle transmissive display mode. Figure 11 Schematic diagram of the structure of the display device in the first embodiment of the present invention in the high contrast and wide viewing angle transmission display mode. Figure 6 、 Figure 9 as well as Figure 11 As shown, in the wide-viewing angle transmission display mode, the color display screen 30 is controlled to display the image, and the polymer dispersed liquid crystal layer 13 in the dimming box 10 is in a foggy state, and at least the electronic ink screen 20 corresponding to the bright state area is in a light-transmitting state. Specifically, the backlight module 50 and the color display screen 30 are both in the on state, and the color display screen 30 is used to display the image. The voltage difference between all the first control electrodes 111 and the second control electrodes 121 is less than the first preset value, so that the polymer dispersed liquid crystal layer 13 is in a foggy state and has a light-scattering effect. All the first control electrodes 111 and the second control electrodes 121 can be applied with no voltage signal, or a voltage signal with a smaller voltage difference can be applied. This makes the display device have a better wide-viewing angle effect, and the scattering degree of the dimming box 10 can be adjusted by the voltage signal applied to the first control electrode 111 and the second control electrode 121, so that the wide-viewing angle effect of the display device can be adjusted.

[0061] Figure 7 3 is a schematic structural diagram of the display device in the narrow viewing angle transmissive display mode according to the first embodiment of the present invention. Figure 10 1 is a schematic structural diagram of the display device in the first embodiment of the present invention in a medium-contrast, narrow-viewing-angle transmissive display mode. Figure 12 FIG. 1 is a schematic diagram of the structure of the display device in the first embodiment of the present invention in a high contrast and narrow viewing angle transmission display mode. Figure 7 、 Figure 10 as well as Figure 12 As shown, in the narrow viewing angle transmission display mode, the color display screen 30 is controlled to display the picture, and the polymer dispersed liquid crystal layer 13 in the dimming box 10 is in a transparent state, and at least the electronic ink screen 20 corresponding to the bright state area is in a light-transmitting state. Specifically, the backlight module 50 and the color display screen 30 are both in the on state, and the color display screen 30 is used to display the picture. The voltage difference between all the first control electrodes 111 and the second control electrodes 121 is greater than the second preset value, so that the polymer dispersed liquid crystal layer 13 is in a transparent state. The voltage difference between all the first control electrodes 111 and the second control electrodes 121 is preferably 7V-15V, so that the emission angle of light will not change after passing through the dimming box 10. Moreover, the transparency of the dimming box 10 can be adjusted by applying a voltage signal to the first control electrode 111 and the second control electrode 121, so that the narrow viewing angle effect of the display device can be adjusted.

[0062] Figure 8 Schematic diagram of the structure of the display device in the area anti-peeping mode in the first embodiment of the present invention. Figure 8As shown, in regional privacy protection mode, the color display screen 30 is controlled to display images. The polymer dispersed liquid crystal layer 13 in the dimming box 10 corresponding to the wide viewing angle area is in a foggy state, and the polymer dispersed liquid crystal layer 13 in the dimming box 10 corresponding to the narrow viewing angle area is in a transparent state. At least the electronic ink screen 20 corresponding to the bright state area is in a light-transmitting state. Specifically, the backlight module 50 and the color display screen 30 are both in the on state, and the color display screen 30 is used to display images. The voltage difference between the first control electrode 111 and the second control electrode 121 corresponding to the wide viewing angle area is less than a first preset value, causing the polymer dispersed liquid crystal layer 13 corresponding to the wide viewing angle area to be foggy and have a light-scattering effect. The voltage difference between the first control electrode 111 and the second control electrode 121 corresponding to the narrow viewing angle area is greater than a second preset value, causing the polymer dispersed liquid crystal layer 13 corresponding to the narrow viewing angle area to be transparent. By controlling the voltage difference between the first control electrode 111 and the second control electrode 121 in different areas, the multifunctional display panel can achieve regional privacy protection.

[0063] like Figure 6 and Figure 7 As shown, in the conventional contrast transmissive display mode, the electronic ink screen 20 corresponding to both the bright and dark areas is in a light-transmitting state, that is, the entire electronic ink screen 20 is in a light-transmitting state. Specifically, a common voltage is applied to the first common electrode 211 and the second side electrode 242, no voltage is applied to all first pixel electrodes 221, and a negative voltage is applied to all first side electrodes 241. Then, the direction of the electric field between the first side electrode 241 and the second side electrode 242 is from the second side electrode 242 toward the first side electrode 241, resulting in the white ink particles 232 moving toward the first side electrode 241 and the black ink particles 231 moving toward the second side electrode 242. All ink capsules 23 are in a light-transmitting state.

[0064] like Figure 9 and Figure 10As shown, in the medium-contrast transmissive display mode, the electronic ink screen 20 corresponding to the bright-state area is in a light-transmitting state, and the electronic ink screen 20 corresponding to the dark-state area is in a gray state. Specifically, a common voltage is applied to the first common electrode 211 and the second side electrode 242, no voltage is applied to the first pixel electrode 221 corresponding to the bright-state area, and a negative voltage is applied to the first side electrode 241 corresponding to the bright-state area. The direction of the electric field between the first side electrode 241 and the second side electrode 242 is from the second side electrode 242 toward the first side electrode 241, resulting in the white ink particles 232 moving toward the first side electrode 241 and the black ink particles 231 moving toward the second side electrode 242. The ink capsules 23 corresponding to the bright-state area are all in a light-transmitting state. No voltage is applied to the first side electrode 241 corresponding to the dark state area, and negative and positive voltages are applied to the first sub-pixel electrode block 221a and the second sub-pixel electrode block 221b corresponding to the dark state area, respectively. Then, some white ink particles 232 move toward the first sub-pixel electrode block 221a, and some black ink particles 231 move toward the second sub-pixel electrode block 221b. The ink capsules 23 corresponding to the dark state area are all in a gray state, which can also block part of the light passing through the color display screen 30, thereby improving the contrast.

[0065] like Figure 11 and Figure 12 As shown, in high-contrast transmissive display mode, the color display screen 30 is controlled to display an image. The electronic ink screen 20 corresponding to the dark state area is in a light-absorbing state, and the electronic ink screen 20 corresponding to the bright state area is in a light-transmitting state. Specifically, a common voltage is applied to the first common electrode 211 and the second side electrode 242. No voltage is applied to the first pixel electrode 221 corresponding to the bright state area. A negative voltage is applied to the first side electrode 241 corresponding to the bright state area. The direction of the electric field between the first side electrode 241 and the second side electrode 242 is from the second side electrode 242 toward the first side electrode 241. As a result, the white ink particles 232 move toward the first side electrode 241, and the black ink particles 231 move toward the second side electrode 242. The ink capsules 23 corresponding to the bright state area are all in a light-transmitting state. No voltage is applied to the first side electrode 241 corresponding to the dark state area, and a negative voltage is applied to the first pixel electrode 221 corresponding to the dark state area. The white ink particles 232 move toward the first pixel electrode 221, and the black ink particles 231 move toward the first common electrode 211. The ink capsules 23 corresponding to the dark state area are all in a black state, which can not only block part of the light passing through the color display screen 30, but also absorb ambient light, thereby further improving the contrast.

[0066] In the reflective display mode, the color display screen 30 is controlled to be turned off, and the electronic ink screen 20 is controlled to display a black and white image. The reflective display mode includes a diffuse reflection display mode and a normal reflection display mode.

[0067] Figure 13 FIG. 1 is a schematic diagram of the structure of the display device in the diffuse reflection display mode in the first embodiment of the present invention. Figure 13 As shown, in diffuse reflection display mode, the backlight module 50 and the color display screen 30 are both off, the dimming box 10 corresponding to the dark state area is transparent, and the dimming box 10 corresponding to the bright state area is foggy, and the electronic ink screen 20 is used to display a black and white image. The voltage difference between the first control electrode 111 and the second control electrode 121 corresponding to the bright state area is less than a first preset value, causing the polymer dispersed liquid crystal layer 13 corresponding to the bright state area to be foggy and have a light-scattering effect; the voltage difference between the first control electrode 111 and the second control electrode 121 corresponding to the dark state area is greater than a second preset value, causing the polymer dispersed liquid crystal layer 13 corresponding to the dark state area to be transparent. The transparent polymer dispersed liquid crystal layer 13 can reduce the reflection of ambient light, so that most of the ambient light entering the electronic ink screen 20 is absorbed, thereby improving the contrast.

[0068] Figure 14 Schematic diagram of the structure of the display device in the ordinary reflective display mode in the first embodiment of the present invention. Figure 14 As shown, in normal reflective display mode, the backlight module 50 and the color display screen 30 are both off, the polymer dispersed liquid crystal layer 13 in the dimming box 10 is transparent, and the electronic ink screen 20 is used to display a black and white image. Specifically, the voltage difference between all first control electrodes 111 and second control electrodes 121 is greater than a second preset value, rendering the polymer dispersed liquid crystal layer 13 transparent. The voltage difference between all first control electrodes 111 and second control electrodes 121 is preferably between 7V and 15V, so that the light does not change its emission angle after passing through the dimming box 10, thereby achieving normal reflective display.

[0069] like Figures 13 and 14As shown, in the reflective display mode, no voltage is applied to all the first side electrodes 241 and the second side electrodes 242, a common voltage is applied to the first common electrode 211, and a positive voltage is applied to the first pixel electrode 221 corresponding to the bright state area. Then, the white ink particles 232 move toward the first common electrode 211, and the black ink particles 231 move toward the first pixel electrode 221. The ink capsules 23 corresponding to the bright state area are all in the reflective state (white state); a negative voltage is applied to the first pixel electrode 221 corresponding to the dark state area, and the white ink particles 232 move toward the first common electrode 211. In the dark state, the ink capsules 23 in the dark region are all in a light-absorbing state (black state). When negative and positive voltages are applied to the first sub-pixel electrode block 221a and the second sub-pixel electrode block 221b, respectively, corresponding to the gray region, some white ink particles 232 move toward the first sub-pixel electrode block 221a, while some black ink particles 231 move toward the second sub-pixel electrode block 221b. The ink capsules 23 in the gray region are all in a gray state. By controlling the driving voltage on the first pixel electrode 221, the display device can be controlled to display black, white, or gray images.

[0070] [Example 2] Figure 15 Schematic diagram of the structure of the display device in the initial state in the second embodiment of the present invention. Figure 15 As shown, the multifunctional display panel, display device and driving method provided in the second embodiment of the present invention are similar to those in the first embodiment ( Figures 1 to 14 ) are basically the same, except that: In this embodiment, the first control electrode 111 and the second control electrode 121 are both planar electrodes provided on the entire surface, thereby reducing the etching process for the second control electrode 121 and lowering the manufacturing cost, but the regional anti-peeping mode and the diffuse reflection display mode cannot be achieved.

[0071] It should be understood by those skilled in the art that the remaining structures and working principles of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0072] [Example 3] Figure 16 It is a schematic structural diagram of the display device in the initial state in the third embodiment of the present invention. Figure 17 FIG. 1 is a schematic diagram of the planar structure of the first array substrate in the third embodiment of the present invention. Figure 16 and Figure 17 As shown, the multifunctional display panel, display device and driving method provided in the third embodiment of the present invention are similar to those in the first embodiment ( Figures 1 to 14 ), Example 2 ( Figure 15) are basically the same, except that: In this embodiment, the first pixel electrode 221 is a block electrode corresponding to the first pixel unit P2, and one block electrode corresponds to one first pixel unit P2, thereby reducing the number of second data lines 202 on the first array substrate 22 and eliminating the need to set the third thin-film transistor 204, which greatly reduces the difficulty of manufacturing the first array substrate 22. However, a medium-contrast, wide-viewing angle transmission display mode cannot be achieved, and the reflective display mode can only achieve black and white image display.

[0073] It should be understood by those skilled in the art that the remaining structures and working principles of this embodiment are the same as those of the first and second embodiments, and will not be described in detail here.

[0074] Figure 18 and Figure 19 This is a schematic diagram of the planar structure of the display device in an embodiment of the present invention. Figure 18 and Figure 19 The display device is provided with a display mode switching button 60 for the user to send a display mode switching request to the display device. The display mode switching button 60 can be a physical button (such as Figure 18 As shown), it can also be a software control or application (APP) to achieve the switching function (as shown Figure 19As shown, for example, the display mode is set by a slider. When a user needs to switch between transmissive display and reflective display, the user can operate the display mode switching button 60 to send a display mode switching request to the display device. Ultimately, the driver chip 60 controls the electrical signals applied to the first pixel electrode 221 and the first common electrode 211, the electrical signals applied to the first side electrode 241 and the second side electrode 242, and controls the on-state of the backlight module 50 and the color display screen 30. The display device can thus switch between transmissive display and reflective display. When switching to transmissive display, the driving method thereof adopts the driving method corresponding to the transmissive display mode. When switching to reflective display, the driving method thereof adopts the driving method corresponding to the reflective display mode. In the transmissive display mode, the display device can switch between a wide-viewing angle transmissive display mode and a narrow-viewing angle transmissive display mode. By operating the display mode switch button 60, a viewing angle switching request is sent to the display device. Ultimately, the driver chip 60 controls the electrical signals applied to the first control electrode 111 and the second control electrode 121. The display device can switch between a wide viewing angle and a narrow viewing angle. When switching to a wide viewing angle, the driving method adopts the driving method corresponding to the wide-angle mode, and when switching to a narrow viewing angle, the driving method adopts the driving method corresponding to the narrow viewing angle mode. Moreover, in the transmissive display mode, the display device can also adjust the contrast mode. When switching to a normal contrast mode, the driving method adopts the driving method corresponding to the normal contrast mode; when switching to a medium contrast mode, the driving method adopts the driving method corresponding to the medium contrast mode; and when switching to a high contrast mode, the driving method adopts the driving method corresponding to the high contrast mode. In addition, when in a reflective display mode, a foggy reflective display can be achieved by switching to a driving method corresponding to the foggy reflective display mode. Therefore, the display device of the embodiment of the present invention has strong operational flexibility and convenience, achieving a multifunctional display device that integrates entertainment video and privacy protection.

[0075] In this document, directional terms such as "up," "down," "left," "right," "front," and "back" are defined based on the positions of structures in the accompanying drawings and their relative positions to each other, for the sake of clarity and convenience in presenting the technical solution. It should be understood that the use of these directional terms does not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein, are used solely for distinctions and are not intended to limit quantity or order.

[0076] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A multifunctional display panel, characterized in that: The device comprises a dimming box (10), an electronic ink screen (20), and a color display screen (30) which are stacked in sequence, wherein the dimming box (10) is arranged on the light-emitting side of the electronic ink screen (20), and the electronic ink screen (20) is arranged on the light-emitting side of the color display screen (30); The dimming box (10) comprises a first substrate (11), a second substrate (12) arranged opposite to the first substrate (11), and a polymer dispersed liquid crystal layer (13) located between the first substrate (11) and the second substrate (12); a first control electrode (111) is provided on the first substrate (11), and a second control electrode (121) is provided on the second substrate (12) to cooperate with the first control electrode (111); The electronic ink screen (20) comprises an opposing substrate (21), a first array substrate (22) arranged opposite to the opposing substrate (21), and ink capsules (23) located between the opposing substrate (21) and the first array substrate (22); all the ink capsules (23) are provided with black ink particles (231) and white ink particles (232) of opposite polarities; a first pixel electrode (221) is provided on the first array substrate (22); a first common electrode (211) matched with the first pixel electrode (221) is provided on the opposing substrate (21); a first side electrode (241) and a second side electrode (242) parallel to each other are provided between the opposing substrate (21) and the first array substrate (22); the first side electrodes (241) and the second side electrodes (242) are alternately arranged; and the ink capsules (23) are located between adjacent first side electrodes (241) and second side electrodes (242).

2. The multifunctional display panel according to claim 1, characterized in that: The dimming box (10) has a plurality of dimming areas (P1) distributed in an array, the second control electrodes (121) are block electrodes corresponding one-to-one to the dimming areas (P1), and the second control electrodes (121) are insulated and spaced apart from each other and independently controlled.

3. The multifunctional display panel according to claim 2, characterized in that: A plurality of first scanning lines (101), a plurality of first data lines (102) and a plurality of first thin film transistors (103) are provided on the second substrate (12); the plurality of first scanning lines (101) and the plurality of first data lines (102) are cross-insulated and defined to form a plurality of dimming areas (P1); the second control electrode (121) is conductively connected to the first scanning line (101) and the first data line (102) adjacent to the first thin film transistor (103) through the first thin film transistor (103).

4. The multifunctional display panel according to claim 2, characterized in that: The dimming box (10) has a plurality of first pixel units (P2) distributed in an array, and the first pixel units (P2) correspond one-to-one to the dimming areas (P1); The color display screen (30) has a plurality of second pixel units (P3) distributed in an array, and the second pixel units (P3) correspond one-to-one to the first pixel units (P2).

5. The multifunctional display panel according to claim 1, characterized in that: The first array substrate (22) is provided with a plurality of second scan lines (201), a plurality of second data lines (202), a plurality of second thin film transistors (203) and a plurality of third thin film transistors (204); the plurality of second scan lines (201) and the plurality of second data lines (202) are mutually insulated and arranged to define a plurality of first pixel units (P2); the first pixel electrode (221) and the first side electrode (241) are in one-to-one correspondence with the first pixel unit (P2); the first pixel electrode (221) is conductively connected to the second scan line (201) and the second data line (202) adjacent to the second thin film transistor (203) through the second thin film transistor (203); the first side electrode (241) is conductively connected to the second scan line (201) and the second data line (202) adjacent to the third thin film transistor (204) through the third thin film transistor (204); Any of the first pixel electrodes (221) and the first side electrodes (241) are respectively connected to two different second scanning lines (201) and / or two different second data lines (202).

6. The multifunctional display panel according to claim 5, characterized in that: The first pixel electrode (221) comprises a first sub-pixel electrode block (221a) and a second sub-pixel electrode block (221b) that are independent of each other; two second thin-film transistors (203) are provided in each first pixel unit (P2); the first sub-pixel electrode block (221a) and the second sub-pixel electrode block (221b) are each electrically connected to the corresponding second scanning line (201) and the second data line (202) via one second thin-film transistor (203).

7. The multifunctional display panel according to any one of claims 1 to 6, characterized in that: The color display screen (30) comprises a color film substrate (31), a second array substrate (32) arranged opposite to the color film substrate (31), and a liquid crystal layer (33) located between the color film substrate (31) and the second array substrate (32); the second array substrate (32) is provided with a second pixel electrode (322) and a second common electrode (321) matched with the second pixel electrode (322); A first polarizer (41) is provided on the color film substrate (31), and a second polarizer (42) is provided on the array substrate (32), wherein the light transmission axes of the first polarizer (41) and the second polarizer (42) are perpendicular to each other.

8. A display device, characterized in that: The invention comprises a multifunctional display panel as described in any one of claims 1 to 7.

9. A method for driving a multifunctional display panel, characterized in that: Used to drive the multifunctional display panel according to any one of claims 1 to 7, the driving method comprising: In a wide-viewing angle transmission display mode, the color display screen (30) is controlled to display an image, the polymer dispersed liquid crystal layer (23) in the dimming box (10) is in a foggy state, and at least the electronic ink screen (20) corresponding to the bright state area is in a light-transmitting state; In a narrow viewing angle transmission display mode, the color display screen (30) is controlled to display an image, the polymer dispersed liquid crystal layer (23) in the dimming box (10) is in a transparent state, and at least the electronic ink screen (20) corresponding to the bright state area is in a light-transmitting state; In a high-contrast transmission display mode, the color display screen (30) is controlled to display an image, the electronic ink screen (20) corresponding to the dark state area is in a light-absorbing state, and the electronic ink screen (20) corresponding to the bright state area is in a light-transmitting state; In the reflective display mode, the color display screen (30) is controlled to be turned off, and the electronic ink screen (20) is controlled to display a black and white image.

10. The driving method of the multifunctional display panel according to claim 9, characterized in that: The dimming box (10) has a plurality of dimming areas (P1) distributed in an array and independently controlled, the dimming box (10) has a plurality of first pixel units (P2) distributed in an array, the first pixel units (P2) corresponding one-to-one to the dimming areas (P1), and the driving method comprises: In the diffuse reflection display mode, the dimming box (10) corresponding to the dark state area is in a transparent state, and the dimming box (10) corresponding to the bright state area is in a foggy state; In the regional anti-peeping mode, the color display screen (30) is controlled to display an image, the polymer dispersed liquid crystal layer (23) in the dimming box (10) corresponding to the wide viewing angle area is in a foggy state, the polymer dispersed liquid crystal layer (23) in the dimming box (10) corresponding to the narrow viewing angle area is in a transparent state, and at least the electronic ink screen (20) corresponding to the bright state area is in a light-transmitting state.

Images