Display device and driving method

Abstract

The application discloses a display device and a driving method. The display device comprises a display panel, an electroactive material layer, an electrode layer and a display driver. The electroactive material layer is arranged on the light-emitting side of the display panel. The electrode layer is electrically connected with the electroactive material layer. The display driver is electrically connected with the electrode layer. The electroactive material layer and another medium form a first interface, and the first interface is located on the side of the electroactive material layer away from the display panel. The display driver is used for inputting a first voltage to the electrode layer in a first display mode of the display device, so as to adjust the refractive index of the electroactive material layer, and the absolute value of the difference between the refractive index of the electroactive material layer and the refractive index of the medium in the first display mode is not greater than 0.2. The application can improve the problem of glare in the screen-off state of the display device.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display device and driving method. Background Technology

[0002] Conventional in-vehicle display devices include a display panel with multiple metal layers. When ambient light shines on the surface of the in-vehicle display device, the surface of the in-vehicle display device produces specular reflection of the ambient light, and the metal layers of the display panel of the in-vehicle display device also produce diffuse reflection of the ambient light entering it, resulting in glare problems when the in-vehicle display device is in the off state. Summary of the Invention

[0003] Embodiments of this application provide a display device and driving method to improve the glare problem of the display device in the screen-off state.

[0004] In a first aspect, embodiments of this application provide a display device, comprising: Display panel; An electrochromic material layer is disposed on the light-emitting side of the display panel; An electrode layer, wherein the electrode layer is electrically connected to the electrochromic material layer; The display driver is electrically connected to the electrode layer; Wherein, the electrochromic material layer forms a first interface with another medium, and the first interface is located on the side of the electrochromic material layer away from the display panel. The display driver is used to input a first voltage to the electrode layer in the first display mode of the display device to adjust the refractive index of the electrochromic material layer, and to make the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium not greater than 0.2 in the first display mode.

[0005] Furthermore, the display device also includes a cover plate disposed on the light-emitting side of the display panel, and an electrochromic material layer disposed on a surface of the cover plate near the display panel. The first interface is formed between the cover plate and the electrochromic material layer, and the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the cover plate is not greater than 0.2.

[0006] Furthermore, the refractive index of the electrochromic material layer is equal to the refractive index of the cover plate.

[0007] Furthermore, the electrode layer is disposed on a surface of the electroluminescent material layer near the display panel, and the electrode layer includes a plurality of first strip electrode strips and a plurality of second strip electrode strips, the first strip electrode strips and the second strip electrode strips being alternately arranged in a first direction of the display device.

[0008] Furthermore, the display device also includes a cover plate disposed on the light-emitting side of the display panel, wherein the electrochromic material layer is disposed on the side of the cover plate away from the display panel.

[0009] Furthermore, the electrode layer includes a first connecting electrode and a second connecting electrode, both of which are disposed in the edge region of the electroactive material layer.

[0010] Furthermore, the display device also includes an anti-reflective layer disposed on a surface of the cover plate away from the display panel, wherein the electrochromic material layer is disposed on a surface of the anti-reflective layer away from the display panel.

[0011] Furthermore, the display device also includes a display area and a non-display area disposed adjacent to the display area; The display driver is used to input the first voltage to the electrode layer in the first display mode to adjust the display state of the electroluminescent material layer to a colored state; In this context, from a viewing angle along the thickness direction of the display panel, the electrochromic material layer is located in the display area and the non-display area.

[0012] Furthermore, the anti-reflective layer includes a first dielectric sublayer and a second dielectric sublayer, the second dielectric layer being disposed on the side of the first dielectric layer away from the display panel, and the electrochromic material layer being disposed on the surface of the second dielectric sublayer away from the display panel. A second interface is formed between the electrochromic material layer and the second dielectric sublayer. The display driver is used to input a second voltage to the electrode layer in the second display mode of the display device to adjust the refractive index of the electrochromic material layer and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the second dielectric sublayer is not greater than 0.2 in the second display mode.

[0013] Secondly, embodiments of this application provide a driving method for a display device, including a display panel, an electrochromic material layer, an electrode layer, and a display driver. The electrochromic material layer is disposed on the light-emitting side of the display panel, the electrode layer is electrically connected to the electrochromic material layer, the display driver is electrically connected to the electrode layer, and a first interface is formed between the electrochromic material layer and another medium, wherein the first interface is located on the side of the electrochromic material layer away from the display panel. The driving method includes the following steps: In the first display mode of the display device, a first voltage is input to the electrode layer to adjust the refractive index of the electrochromic material layer, and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium is not greater than 0.2 in the first display mode.

[0014] The beneficial effects of this application are: This application provides a display device comprising an electrochromic material layer, an electrode layer, and a display driver. The electrochromic material layer is disposed on the light-emitting side of the display panel. The electrode layer is electrically connected to the electrochromic material layer, and the display driver is electrically connected to the electrode layer. The electrochromic material layer forms a first interface with another medium, and the first interface is located on the side of the electrochromic material layer away from the display panel. The display driver is used to input a first voltage to the electrode layer in a first display mode of the display device to adjust the refractive index of the electrochromic material layer, and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium is not greater than 0.2 in the first display mode. This enables the refractive index of the electrochromic material layer to match the refractive index of the material of the other medium forming the first interface, thereby reducing the reflection of ambient light by the first interface and improving the glare problem in the first display mode.

[0015] This application provides a driving method for a display device. The display device includes an electrochromic material layer, an electrode layer, and a display driver. The electrochromic material layer is disposed on the light-emitting side of the display panel. The electrode layer is electrically connected to the electrochromic material layer, and the display driver is electrically connected to the electrode layer. The electrochromic material layer forms a first interface with another medium, and the first interface is located on the side of the electrochromic material layer away from the display panel. In a first display mode of the display device, a first voltage is input to the electrode layer to adjust the refractive index of the electrochromic material layer. The absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium is not greater than 0.2 in the first display mode. This allows the refractive index of the electrochromic material layer to match the refractive index of the material of the other medium forming the first interface, thereby reducing the reflection of ambient light by the first interface and improving the glare problem of the display device in the first display mode. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the display device of this application from a viewing angle in its thickness direction; Figure 2 yes Figure 1 A schematic diagram of the first structure of the display device shown; Figure 3 yes Figure 1 A schematic diagram of a second structure of the display device shown; Figure 4 yes Figure 3 A schematic diagram of the structure of the anti-reflective layer of the display device shown.

[0017] Explanation of reference numerals in the attached figures: 10-Display device; 100-Display panel; 200-Electro-optical material layer; 300-Electrode layer; 310-First strip electrode; 320-Second strip electrode; 330-First connecting electrode; 340-Second connecting electrode; 400-Display driver; 500-Cover plate; 600-Anti-reflective layer; 610-First dielectric sublayer; 620-Second dielectric sublayer; 700-Transparent adhesive layer.

[0018] S1 - First interface; S2 - Second interface.

[0019] AA - Display area; NA - Non-display area.

[0020] H - thickness direction, L - first direction. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The technical solutions described below are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0022] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0023] This application provides a display device 10, with reference to... Figure 1 , Figure 2 , Figure 3 The display device 10 includes a display panel 100, an electroluminescent material layer 200, an electrode layer 300, and a display driver 400.

[0024] In this embodiment, the display device 10 is an in-vehicle display device 10.

[0025] In this embodiment, the display device 10 further includes a display area AA and a non-display area NA disposed adjacent to the display area AA.

[0026] It is understood that in this embodiment, the non-display area NA and the display area AA being adjacent can mean that the display area AA surrounds at least a part of the non-display area NA, or that the non-display area NA is set around the display area AA. Specifically, when the display area AA surrounds the non-display area NA, the non-display area NA is an area for light to pass through for under-screen imaging, and the non-display area NA is a camera hole. When the non-display area NA is set around the display area AA, the non-display area NA is a border area set around the display area AA. Of course, in another embodiment, the non-display area NA can also include a camera hole and a border area, in which case the display area AA and the non-display area NA being adjacent means that the display area AA surrounds the camera hole and the border area is set around the display area. In the following embodiments, the non-display area NA is described as a border area, and the border area is set around the display area AA.

[0027] In this embodiment, the referenced Figure 2 , Figure 3 The electrochromic material layer 200 is disposed on the light-emitting side of the display panel 100; the electrode layer 300 is electrically connected to the electrochromic material layer 200; the display driver 400 is electrically connected to the electrode layer 300; wherein, the electrochromic material layer 200 forms a first interface S1 with another medium, and the first interface S1 is located on the side of the electrochromic material layer 200 away from the display panel 100; the display driver 400 is used to input a first voltage to the electrode layer 300 in the first display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200, and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium in the first display mode is not greater than 0.2.

[0028] Conventional automotive display devices include a display panel comprising multiple metal layers. When ambient light shines on the surface of the automotive display device, the surface of the device exhibits specular reflection of the ambient light, and the metal layers of the display panel also diffusely reflect the ambient light entering it, causing glare when the display is off. Therefore, this application provides a display device 10, which includes an electrochromic material layer 200, an electrode layer 300, and a display driver 400. The electrochromic material layer 200 is located on the light-emitting side of the display panel 100. The electrode layer 300 is electrically connected to the electrochromic material layer 200, and the display driver 400 is electrically connected to the electrode layer 300. A first interface S1 is formed between the electrochromic material layer 200 and another medium, and the first interface S1 is located on the side of the electrochromic material layer 200 away from the display panel 100. The device 400 is used to input a first voltage to the electrode layer 300 in the first display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200, and to make the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium in the first display mode not greater than 0.2. This enables the refractive index of the electrochromic material layer 200 to match the refractive index of the material of the other medium forming the first interface S1, thereby reducing the reflection of ambient light by the first interface S1 and improving the glare problem of the display device 10 in the first display mode.

[0029] In this embodiment, the display device 10 includes a first display mode and a second display mode. The first display mode is an always-on display. In another embodiment, the first display mode may also be a low-brightness display mode of the display device 10. The second display mode is a normal display mode. Specifically, the normal display mode is a display mode in which the display device 10 displays a normal image and has a higher brightness.

[0030] It is understood that, in this embodiment, the first interface S1 formed between the electrochromic material layer 200 and another medium can be the first interface S1 formed between the electrochromic material layer 200 and another solid film layer of the display device 10, or it can be the first interface S1 formed between the electrochromic material layer 200 and a non-solid medium. Whether the medium is a solid film layer or a non-solid medium is determined according to the position of the electrochromic material. Specifically, when the electrochromic material layer 200 is located on the outermost side of the display device 10, the medium is a non-solid medium, namely air. When a cavity is formed between the electrochromic material layer 200 and another solid film layer, the medium is also a non-solid medium. Specifically, the non-solid medium can be air, a gaseous element, or a mixture of at least two gases with a composition different from air. When the electrochromic material layer 200 is neither located on the outermost side of the display device 10 nor when a cavity is formed between the electrochromic material layer 200 and another solid film layer—that is, when another solid film layer is formed on a surface of the electrochromic material layer 200 away from the display panel 100—then the medium is a solid film layer formed on the surface of the electrochromic material layer 200 away from the display panel 100. To better illustrate the technical concept of this application, several different embodiments are described below.

[0031] In this embodiment, after a first voltage is input to the electrode layer 300 in the first display mode of the display device 10, the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium in the first display mode is 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19 or 0.2.

[0032] The first embodiment of this application provides a first display device 10, see reference. Figure 2 The display device 10 further includes a cover plate 500, which is disposed on the light-emitting side of the display panel 100. The electrochromic material layer 200 is disposed on a surface of the cover plate 500 near the display panel 100. The absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the cover plate 500 is not greater than 0.2.

[0033] It can be understood that, in this embodiment, since the display device 10 also includes a cover plate 500, the cover plate 500 is disposed on the light-emitting side of the display panel 100, and the electrochromic material layer 200 is disposed on a surface of the cover plate 500 near the display panel 100, the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the cover plate 500 is not greater than 0.2. That is, in this embodiment, the medium is the cover plate 500, and by setting the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the cover plate 500 to be not greater than 0.2, the refractive index of the electrochromic material layer 200 and the refractive index of the cover plate 500 can be matched to reduce the reflection of ambient light by the first interface S1, thereby improving the glare problem of the display device 10 in the first display mode.

[0034] It should be noted that, in this embodiment, reference is used. Figure 2 The first interface S1 is the first interface S1 formed between the electroactive material layer 200 and the cover plate 500.

[0035] In this embodiment, the absolute value of the difference between the refractive index of the electrochromic material layer 200 under the first display module and the refractive index of the cover plate 500 is 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19 or 0.2.

[0036] In this embodiment, the refractive index of the electroluminescent material layer 200 is equal to the refractive index of the cover plate 500.

[0037] It is understood that, in this embodiment, since the refractive index of the electroluminescent material layer 200 is set to be equal to the refractive index of the cover plate 500, the reflectivity of the first interface S1 formed between the electroluminescent material layer 200 and the cover plate 500 is 0, thereby more effectively improving the glare problem of the display device 10 in the first display mode.

[0038] In this embodiment, reference Figure 2 The electrode layer 300 is disposed on a surface of the electroluminescent material layer 200 near the display panel 100. The electrode layer 300 includes a plurality of first strip electrodes 310 and a plurality of second strip electrodes 320, and the first strip electrodes 310 and the second strip electrodes 320 are alternately arranged in a first direction L of the display device 10.

[0039] In this embodiment, reference Figure 2 The display device 10 further includes an anti-reflective layer 600, which is disposed on a surface of the cover plate 500 away from the display panel 100.

[0040] It is understood that, in this embodiment, since the display device 10 also includes an anti-reflective layer 600, which is disposed on a surface of the cover plate 500 away from the display panel 100, when ambient light passes through the anti-reflective layer 600, interference cancellation occurs when the ambient light enters the anti-reflective layer 600, thereby reducing the ambient light reflected to the outside world and further improving the glare problem of the display device 10 in the first display mode.

[0041] In this embodiment, reference Figure 1 , Figure 2 The display device 10 further includes a display area AA and a non-display area NA disposed adjacent to the display area AA. The display driver 400 is used to input the first voltage to the electrode layer 300 in the first display mode to adjust the display state of the electrochromic material layer 200 to a colored state. The electrochromic material layer 200 is located in the display area AA and the non-display area NA from a viewing angle along the thickness direction H of the display panel 100.

[0042] It is understood that, in this embodiment, since the display device 10 further includes a display area AA and a non-display area NA adjacent to the display area AA, the display driver 400 is used to input the first voltage to the electrode layer 300 in the first display mode to adjust the display state of the electrochromic material layer 200 to a colored state; wherein, from a viewing angle along the thickness direction H of the display panel 100, the electrochromic material layer 200 is located in the display area AA and the non-display area NA, so that in the first display mode, both the display area AA and the non-display area NA of the display device 10 are displayed through the electrochromic material layer 200, which can reduce the color difference between the display area AA and the non-display area NA in the first display mode, improve the consistency of the display effect of the display area AA and the non-display area NA of the display device 10 in the first display mode, thereby improving the optical effect of the display device 10 in the first display mode.

[0043] In this embodiment, the display driver 400 is used to input the second voltage to the electrode layer 300 in the second display mode to adjust the display state of the electroluminescent material layer 200 to a transparent state.

[0044] In this embodiment, both the first voltage and the second voltage are pulse voltages.

[0045] In this embodiment, the color state can be the black state of the display device when the screen is off.

[0046] It should be noted that, as a first adjustment method for implementing the first display mode and the second implementation mode of this embodiment, when the first display mode is activated, a first voltage is applied to the electrochromic material layer 200 through the first strip electrode 310 and the second strip electrode 320 to change the refractive index of the electrochromic material layer 200, so that the refractive index of the electrochromic material layer 200 matches the refractive index of the cover plate 500, and the color of the electrochromic material layer 200 changes to a colored state, thereby realizing the low reflection of the display device 10 when the screen is off; when the second display mode is activated, a second voltage is applied to the electrochromic material layer 200 to change the refractive index of the electrochromic material layer 200, so that the refractive index of the electrochromic material layer 200 matches the refractive index of the electrode layer 300, and the color of the electrochromic material layer 200 changes from a colored state to a transparent state, thereby realizing the normal display of the display device 10.

[0047] In this embodiment, the first voltage is no greater than 4V, and the second voltage is no greater than 4V.

[0048] It is understandable that when the first voltage is no greater than 4V and the second voltage is no greater than 4V, the refractive index and display state of the electroluminescent material layer 200 can be adjusted.

[0049] In this embodiment, reference Figure 2 The display device 10 further includes a transparent adhesive layer 700, which is disposed between the display panel 100 and the electroluminescent material layer 200.

[0050] In this embodiment, the material of the electroluminescent material layer 200 includes indium tin oxide, indium oxide, tin oxide, zinc oxide, aluminum-doped zinc oxide, or gallium-doped zinc oxide.

[0051] The second embodiment of this application provides a second type of display device 10, see reference. Figure 3 The display device 10 further includes a cover plate 500, which is disposed on the light-emitting side of the display panel 100, wherein the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium with a refractive index of 1 is not greater than 0.2.

[0052] It is understood that the second embodiment is similar to the first embodiment. The difference between the second embodiment and the first embodiment is that the electrochromic material layer 200 is disposed on the side of the cover plate 500 away from the display panel 100. The absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium with a refractive index of 1 is not greater than 0.2. That is, the first interface S1 is formed between the surface of the electrochromic material layer 200 away from the display panel 100 and the medium with a refractive index of 1, thereby achieving a match between the refractive index of the electrochromic material layer 200 and the refractive index of the medium with a refractive index of 1, so as to reduce the reflection of ambient light by the first interface S1, thereby improving the glare problem of the display device 10 in the first display mode.

[0053] In this embodiment, the medium with a refractive index of 1 includes air.

[0054] It is understood that in this embodiment, since the medium with a refractive index of 1 includes air, the distance from the electrochromic material layer 200 to the display panel 100 is farther than the distance from the cover plate 500 to the display panel 100. Therefore, the electrochromic material layer 200 can be used as the outermost film layer of the display device 10. In other words, the first interface S1 is formed with air through a surface of the electrochromic material layer 200 away from the display panel 100, thereby achieving a match between the refractive index of the electrochromic material layer 200 and the refractive index of air. This reduces the reflection of ambient light by the first interface S1, thereby improving the glare problem of the display device 10 in the first display mode.

[0055] The absolute value of the difference between the refractive index of the electrochromic material layer 200 under the first display module and the refractive index of air is not greater than 0.2. Specifically, the absolute value of the difference between the refractive index of the electrochromic material layer 200 under the first display module and the refractive index of air is 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19 or 0.2.

[0056] In this embodiment, the refractive index of the electroluminescent material layer 200 is equal to that of air.

[0057] It is understood that, in this embodiment, since the refractive index of the electroluminescent material layer 200 is set to be equal to that of air, the reflectivity of the first interface S1 formed between the electroluminescent material layer 200 and the air is 0, thereby more effectively improving the glare problem of the display device 10 in the first display mode.

[0058] In this embodiment, reference Figure 3 The electrode layer 300 includes a first connecting electrode 330 and a second connecting electrode 340, both of which are located in the edge region of the electroactive material layer 200.

[0059] It is understood that in this embodiment, since the electrode layer 300 includes a first connecting electrode 330 and a second connecting electrode 340, and both the first connecting electrode 330 and the second connecting electrode 340 are located in the edge region of the electroluminescent material layer 200, in this embodiment, the transmission of electrical signals is achieved by using connecting electrodes located in the edge region of the electroluminescent material layer 200, rather than strip electrodes that are set across the entire surface. Therefore, when the electroluminescent material layer 200 is formed on the outermost side of the display device 10, the risk of reflection of ambient light caused by interference between the electrode layer 300 and other film layers that are set across the entire surface can be reduced, thereby further reducing the reflection effect of the display device 10 on ambient light.

[0060] In this embodiment, reference Figure 3 The first connecting electrode 330 and the second connecting electrode 340 are both located in the non-display area NA, and the first connecting electrode 330 and the second connecting electrode 340 are arranged opposite to each other.

[0061] It is understood that, in this embodiment, since the first connection electrode 330 and the second connection electrode 340 are both located in the non-display area NA, and the first connection electrode 330 and the second connection electrode 340 are arranged opposite to each other, the interference of the first connection electrode 330 and the second connection electrode 340 on the display screen of the display device 10 can be reduced, thereby improving the display effect of the display device 10.

[0062] In this embodiment, reference Figure 3 The display device 10 further includes an anti-reflective layer 600, which is disposed on a surface of the cover plate 500 away from the display panel 100, wherein the electroluminescent material layer 200 is disposed on a surface of the anti-reflective layer 600 away from the display panel 100.

[0063] It is understood that in this embodiment, since the display device 10 also includes an anti-reflective layer 600, which is disposed on the surface of the cover plate 500 away from the display panel 100, and the electrochromic material layer 200 is disposed on the surface of the anti-reflective layer 600 away from the display panel 100, the reflection effect is reduced once when ambient light enters the electrochromic material layer 200, and interference cancellation occurs when ambient light passes through the anti-reflective layer 600, resulting in a second reduction in reflection effect. After being reduced twice, the ambient light reflected to the outside can be further reduced, thereby further improving the glare problem of the display device 10 in the first display mode.

[0064] In this embodiment, the display driver 400 is used to input the first voltage to the electrode layer 300 in the first display mode to adjust the display state of the electrochromic material layer 200 to a colored state; wherein, from a viewing angle along the thickness direction H of the display panel 100, the electrochromic material layer 200 is located in the display area AA and the non-display area NA.

[0065] It should be noted that, as a second adjustment method for implementing the first and second display modes of this embodiment, when the first display mode is activated, the first connecting electrode 330 and the second connecting electrode 340 are locked by the locking electrode to apply a first voltage to the electrochromic material layer 200, thereby changing the refractive index of the electrochromic material layer 200 and changing the color of the electrochromic material layer 200 to a colored state, thus achieving low reflection when the display device 10 is off; when the second display mode is activated, the first connecting electrode 330 and the second connecting electrode 340 are locked by the locking electrode to apply a second voltage to the electrochromic material layer 200, thereby changing the refractive index of the electrochromic material layer 200, so that the refractive index of the electrochromic material layer 200 matches the refractive index of the outermost film layer of the anti-reflection layer 600, and changing the color of the electrochromic material layer 200 from a colored state to a transparent state, thus achieving normal display of the display device 10.

[0066] In this embodiment, reference Figure 3 , Figure 4 The anti-reflective layer 600 includes a first dielectric sublayer 610 and a second dielectric sublayer 620. The second dielectric layer is disposed on the side of the first dielectric layer away from the display panel 100. The electrochromic material layer 200 is disposed on a surface of the second dielectric sublayer 620 away from the display panel 100. A second interface S2 is formed between the electrochromic material layer 200 and the second dielectric sublayer 620. The display driver 400 is used to input a second voltage to the electrode layer 300 in the second display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200 and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the second dielectric sublayer 620 in the second display mode is not greater than 0.2.

[0067] Since the anti-reflective layer 600 includes a first dielectric sublayer 610 and a second dielectric sublayer 620, with the second dielectric layer disposed on the side of the first dielectric layer away from the display panel 100, and the electro-optical material layer 200 disposed on the surface of the second dielectric sublayer 620 away from the display panel 100, a second interface S2 is formed between the electro-optical material layer 200 and the second dielectric sublayer 620. The display driver 400 is used to input a second voltage to the electrode layer 300 in the second display mode of the display device 10 to adjust the refractive index of the electro-optical material layer 200, and to ensure that the absolute value of the difference between the refractive index of the electro-optical material layer 200 and the refractive index of the second dielectric sublayer 620 in the second display mode is not greater than 0.2. In other words, the anti-reflective effect of the anti-reflective layer 600 is achieved through electro-optical... The material layer 200 works in conjunction with the second dielectric sub-layer 620 to achieve the anti-reflection effect of the display device 10 in the second display mode. This effect is also achieved by changing the refractive index of the electrochromic material layer 200, thereby enabling the display device 10 to achieve a dynamic anti-reflection effect. Furthermore, by controlling the refractive index of the electrochromic material layer 200 to match that of the outermost layer of the anti-reflection layer 600, the electrochromic material layer 200 can be used as part of the anti-reflection layer 600. In other words, the electrochromic material layer 200 can replace a sub-layer originally used to form the anti-reflection layer 600. Without increasing the thickness of the display device 10, the refractive index of the electrochromic material layer 200 can be matched with the refractive index of the material of the other medium forming the first interface S1, thereby reducing the reflection of ambient light by the first interface S1 and improving the glare problem of the display device 10 in the first display mode.

[0068] In this embodiment, the display driver 400 is used to input a second voltage to the electrode layer 300 in the second display mode of the display device 10 to adjust the refractive index of the electro-optic material layer 200 and make the refractive index of the electro-optic material layer 200 equal to the refractive index of the second dielectric sublayer 620 in the second display mode.

[0069] It is understood that, in this embodiment, since the display driver 400 is configured to input a second voltage to the electrode layer 300 in the second display mode of the display device 10 to adjust the refractive index of the electro-optic material layer 200, and to make the refractive index of the electro-optic material layer 200 equal to the refractive index of the second dielectric sub-layer 620 in the second display mode, the reflectivity of the first interface S1 formed between the electro-optic material layer 200 and the second dielectric sub-layer 620 is 0, thereby more effectively improving the glare problem of the display device 10 in the first display mode.

[0070] In this embodiment, reference Figure 3The display device 10 further includes a transparent adhesive layer 700, which is disposed between the display panel 100 and the cover plate 500.

[0071] The third embodiment of this application provides a driving method for a display device 10, referencing... Figure 2 , Figure 3 The display device 10 includes a display panel 100, an electrochromic material layer 200, an electrode layer 300, and a display driver 400. The electrochromic material layer 200 is disposed on the light-emitting side of the display panel 100. The electrode layer 300 is electrically connected to the electrochromic material layer 200. The display driver 400 is electrically connected to the electrode layer 300. A first interface S1 is formed between the electrochromic material layer 200 and another medium, and the first interface S1 is located on the side of the electrochromic material layer 200 away from the display panel 100. The driving method includes the following steps: inputting a first voltage to the electrode layer 300 in a first display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200, and ensuring that the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium in the first display mode is not greater than 0.2.

[0072] A conventional vehicle-mounted display device 10 includes a display panel 100, which comprises multiple metal layers. When ambient light shines on the surface of the vehicle-mounted display device 10, the surface of the device reflects the ambient light specularly, and the metal layers of the display panel 100 also diffusely reflect the ambient light entering it, causing glare when the display device 10 is off. Therefore, this application provides a driving method for the display device 10, which includes an electrochromic material layer 200, an electrode layer 300, and a display driver 400. The electrochromic material layer 200 is located on the light-emitting side of the display panel 100, the electrode layer 300 is electrically connected to the electrochromic material layer 200, and the display driver 400 is electrically connected to the electrode layer 300. A first interface S1 is formed between the electrochromic material layer 200 and another medium, and the first interface S1 is located on the side of the electrochromic material layer 200 away from the display panel 100. The first voltage is input to the electrode layer 300 in the first display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200, and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the medium is not greater than 0.2 in the first display mode. This enables the refractive index of the electrochromic material layer 200 to match the refractive index of the material of the other medium forming the first interface S1, thereby reducing the reflection of ambient light by the first interface S1 and improving the glare problem of the display device 10 in the first display mode.

[0073] In this embodiment, the driving method includes the following steps: inputting a second voltage to the electrode layer 300 in the second display mode of the display device 10 to adjust the refractive index of the electrochromic material layer 200, and ensuring that the absolute value of the difference between the refractive index of the electrochromic material layer 200 and the refractive index of the electrode in the second display mode is not greater than 0.2.

[0074] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A display device, characterized in that, include: Display panel; An electrochromic material layer is disposed on the light-emitting side of the display panel; An electrode layer, wherein the electrode layer is electrically connected to the electrochromic material layer; The display driver is electrically connected to the electrode layer; Wherein, the electrochromic material layer forms a first interface with another medium, and the first interface is located on the side of the electrochromic material layer away from the display panel. The display driver is used to input a first voltage to the electrode layer in the first display mode of the display device to adjust the refractive index of the electrochromic material layer, and to make the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium not greater than 0.2 in the first display mode.

2. The display device according to claim 1, characterized in that, The display device further includes a cover plate disposed on the light-emitting side of the display panel, and an electrochromic material layer disposed on a surface of the cover plate near the display panel. The first interface is formed between the cover plate and the electrochromic material layer, and the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the cover plate is not greater than 0.

2.

3. The display device according to claim 2, characterized in that, The refractive index of the electrochromic material layer is equal to the refractive index of the cover plate.

4. The display device according to claim 2, characterized in that, The electrode layer is disposed on a surface of the electrochromic material layer near the display panel. The electrode layer includes a plurality of first strip electrodes and a plurality of second strip electrodes, which are alternately arranged in a first direction of the display device.

5. The display device according to claim 1, characterized in that, The display device further includes a cover plate disposed on the light-emitting side of the display panel, wherein the electrochromic material layer is disposed on the side of the cover plate away from the display panel.

6. The display device according to claim 5, characterized in that, The electrode layer includes a first connecting electrode and a second connecting electrode, both of which are located in the edge region of the electrochromic material layer.

7. The display device according to claim 5, characterized in that, The display device further includes an anti-reflective layer disposed on a surface of the cover plate away from the display panel, wherein the electrochromic material layer is disposed on a surface of the anti-reflective layer away from the display panel.

8. The display device according to claim 7, characterized in that, The anti-reflective layer includes a first dielectric sublayer and a second dielectric sublayer. The second dielectric layer is disposed on the side of the first dielectric layer away from the display panel. The electrochromic material layer is disposed on the surface of the second dielectric sublayer away from the display panel. A second interface is formed between the electrochromic material layer and the second dielectric sublayer. The display driver is used to input a second voltage to the electrode layer in the second display mode of the display device to adjust the refractive index of the electrochromic material layer and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the second dielectric sublayer is not greater than 0.2 in the second display mode.

9. The display device according to claim 1, characterized in that, The display device further includes a display area and a non-display area disposed adjacent to the display area; The display driver is used to input the first voltage to the electrode layer in the first display mode to adjust the display state of the electroluminescent material layer to a colored state; In this context, from a viewing angle along the thickness direction of the display panel, the electrochromic material layer is located in the display area and the non-display area.

10. A driving method for a display device, characterized in that, The display includes a display panel, an electrochromic material layer, an electrode layer, and a display driver. The electrochromic material layer is disposed on the light-emitting side of the display panel. The electrode layer is electrically connected to the electrochromic material layer, and the display driver is electrically connected to the electrode layer. A first interface is formed between the electrochromic material layer and another medium, and the first interface is located on the side of the electrochromic material layer away from the display panel. The driving method includes the following steps: In the first display mode of the display device, a first voltage is input to the electrode layer to adjust the refractive index of the electrochromic material layer, and to ensure that the absolute value of the difference between the refractive index of the electrochromic material layer and the refractive index of the medium is not greater than 0.2 in the first display mode.

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