Display device and rearview mirror

Abstract

A display device comprises a display panel, a mirror switching screen, a first photosensitive sensor, a first flexible circuit board and a driving board. The mirror switching screen is arranged on the light-emitting side of the display panel. The first photosensitive sensor is configured to sense the light intensity of ambient light on the side of the mirror switching screen away from the display panel in real time. The first flexible circuit board comprises a binding part, a component part and a wiring part. The binding part is electrically connected with the mirror switching screen. The first photosensitive sensor is arranged on the side of the component part close to the mirror switching screen. The wiring part is provided with a wiring electrically connected with the binding pad of the binding part and the first photosensitive sensor. The driving board is electrically connected with the wiring part of the first flexible circuit board.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a display device and a rearview mirror. Background Technology

[0002] With the development of display technology, display devices have been widely used in various fields. Among them, the application of display devices to automotive rearview mirrors to create streaming media rearview mirrors can display the image behind the vehicle. Compared to traditional mirrored rearview mirrors, streaming media rearview mirrors have advantages such as a wider field of view and anti-glare, therefore, they are gradually gaining popularity. Summary of the Invention

[0003] On one hand, a display device is provided. The display device includes a display panel, a mirror switching screen, a first photosensor, a first flexible circuit board, and a driver board. The mirror switching screen is disposed on the light-emitting side of the display panel. The first photosensor is configured to sense the intensity of ambient light on the side of the mirror switching screen away from the display panel in real time. The first flexible circuit board includes a bonding portion, a component portion, and a wiring portion. The bonding portion is electrically connected to the mirror switching screen. The first photosensor is disposed on the component portion near the mirror switching screen. The wiring portion has bonding pads for bonding the bonding portion and wiring electrically connected to the first photosensor. The driver board is electrically connected to the wiring portion of the first flexible circuit board.

[0004] In some embodiments, the binding portion and the component portion are both located at the end of the wiring portion near the mirror switching screen, and there is a gap between the binding portion and the component portion.

[0005] In some embodiments, the minimum distance between the boundary of the bonding portion near the component portion and the boundary of the component portion near the bonding portion is 25.55mm to 25.95mm.

[0006] In some embodiments, the driver board is also electrically connected to the display panel.

[0007] In some embodiments, the display device further includes a second flexible circuit board, which is electrically connected to the display panel and the driving board, and the driving board can be bent to the side of the display panel away from the mirror switching screen via the first flexible circuit board and the second flexible circuit board.

[0008] In some embodiments, along the direction from the display panel to the mirror switching screen, the mirror switching screen includes a reflective polarizer, a first transparent substrate, a first transparent electrode layer, a first alignment film, a liquid crystal layer, a second alignment film, a second transparent electrode layer, a second transparent substrate, and a first absorptive polarizer arranged sequentially. The transmission axis of the reflective polarizer is substantially perpendicular to the absorption axis of the first absorptive polarizer, the orientation direction of the first alignment film is substantially parallel to the transmission axis of the reflective polarizer, and the orientation direction of the second alignment film is substantially parallel to the absorption axis of the first absorptive polarizer.

[0009] In some embodiments, the reflective polarizer includes any one of a multilayer reflective polarizer, a reflective polarizer, an optical brightening film, or a metal mesh reflective polarizer.

[0010] In some embodiments, the orthographic projection of the first transparent substrate onto the reference plane lies within the orthographic projection of the second transparent substrate onto the reference plane. The reference plane is the plane containing the surface of the mirror switching screen away from the display panel. The second transparent substrate extends beyond the edge of the first transparent substrate to form a first step. A bonding pin is provided on the side of the first step near the display panel. A bonding pad is provided on the bonding portion of the first flexible circuit board, and the bonding pad is electrically connected to the bonding pin.

[0011] In some embodiments, the first photosensitive sensor includes a base and a photosensitive chip. A first surface of the base has a mounting groove, and the photosensitive chip is disposed within the mounting groove. A second surface of the base has a photosensitive aperture. The photosensitive chip is configured to sense the intensity of ambient light on the side of the mirror switching screen away from the display panel through the photosensitive aperture. The first surface and the second surface are two opposing surfaces of the base. The first surface of the base is connected to the first flexible circuit board, and the second surface of the base is bonded to the side of the first step closest to the display panel.

[0012] In some embodiments, the center of the orthographic projection of the first photosensitive sensor onto the reference surface roughly coincides with the center of the orthographic projection of the first step onto the reference surface.

[0013] In some embodiments, the mirror switching screen includes a display area and a peripheral area located on at least one side of the display area; the display device further includes a light-shielding layer disposed on the side of the second transparent substrate away from the display panel, and the light-shielding layer covers the peripheral area.

[0014] In some embodiments, the light-shielding layer is disposed between the second transparent substrate and the first absorptive polarizer, wherein the first absorptive polarizer at least partially covers the light-shielding layer.

[0015] In some embodiments, the light-shielding layer and the first absorptive polarizer are both disposed on the surface of the second transparent substrate away from the display panel, and the two boundaries of the orthographic projection of the light-shielding layer on the reference surface and the orthographic projection of the first absorptive polarizer on the reference surface are approximately coincident or have a gap.

[0016] In some embodiments, the light-shielding layer is provided with a clearance hole, and the orthographic projection of the photosensitive sensor on the reference surface is located within the orthographic projection of the clearance hole on the reference surface; wherein, the reference surface is the plane on which the surface of the mirror switching screen is located away from the display panel.

[0017] In some embodiments, the material of the light-shielding layer includes ink and / or metal.

[0018] In some embodiments, the thickness of the light-shielding layer is 6.5 μm to 7.5 μm.

[0019] In some embodiments, the display device further includes a second absorptive polarizer disposed between the display panel and the mirror switching screen, wherein the absorption axis of the second absorptive polarizer is substantially perpendicular to the transmission axis of the reflective polarizer.

[0020] In some embodiments, the second transparent substrate extends beyond the edge of the first transparent substrate to form a first step. The orthographic projection of the second absorptive polarizer onto the reference plane lies within the orthographic projection of the display panel onto the reference plane. The display panel extends beyond the edge of the second absorptive polarizer to form a second step, and the orthographic projection of the first step onto the reference plane at least partially coincides with the orthographic projection of the second step onto the reference plane. The display device further includes a support member, one end of which abuts against at least the first flexible circuit board, and the other end of which abuts against the second step.

[0021] In some embodiments, the first flexible circuit board extends from the side of the support away from the second absorptive polarizer to the backlight side of the display panel.

[0022] In some embodiments, the display device further includes a second photosensor disposed on the side of the display panel away from the mirror switching screen, and the second photosensor is configured to sense the intensity of ambient light on the backlight side of the display panel in real time. The driver board is also electrically connected to the second photosensor.

[0023] On the other hand, a display device is provided. The display device includes a display panel, a first photosensor, a first circuit board, and a driver board. The first photosensor is configured to sense the intensity of ambient light on the light-emitting side of the display panel in real time. The first circuit board includes a bonding portion, a component portion, and a wiring portion. The first photosensor is disposed in the component portion, and the wiring portion has wiring that is electrically connected to the pins of the bonding portion and the first photosensor. The driver board is electrically connected to the wiring portion of the first circuit board, and the driver board is also electrically connected to the display panel.

[0024] In another aspect, a rearview mirror is provided. The rearview mirror includes the display device described in any of the above embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0026] Figure 1 This is a structural diagram of a display device according to some embodiments;

[0027] Figure 2 for Figure 1 A sectional view along section line AA';

[0028] Figure 3 for Figure 1 Another sectional view along section line AA';

[0029] Figure 4 for Figure 1 Another sectional view along section line AA';

[0030] Figure 5 This is a structural diagram showing the connection between the display panel and the second flexible circuit board of a display device according to some embodiments;

[0031] Figure 6 According to some embodiments Figure 5 A sectional view along section line BB';

[0032] Figure 7 According to other embodiments Figure 5 A sectional view along section line BB';

[0033] Figure 8This is a block diagram of a display device according to some embodiments;

[0034] Figure 9 This is a structural diagram of a first flexible circuit board of a display device according to some embodiments;

[0035] Figure 10 This is a structural diagram of a rearview mirror according to some embodiments;

[0036] Figure 11 for Figure 9 A sectional view along section line BB'. Detailed Implementation

[0037] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0038] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0039] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0040] In describing some embodiments, the terms "connection" and "electrical connection" and their derivative expressions may be used. For example, the term "connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "electrical connection" may be used in describing some embodiments to indicate that two or more components have direct electrical contact. However, the term "electrical connection" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0041] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0042] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0043] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0044] Exemplary embodiments are described herein with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes.

[0045] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0046] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0047] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0048] like Figure 1 As shown, some embodiments of this disclosure provide a display device 100, which can be a television, mobile phone, computer, laptop, tablet computer, personal digital assistant (PDA), in-vehicle computer, car rearview mirror, etc.

[0049] The display device 100 can be a liquid crystal display (LCD); it can also be an electroluminescent display device or a photoluminescent display device. If the display device 100 is an electroluminescent display device, it can be an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED). If the display device 100 is a photoluminescent display device, it can be a quantum dot photoluminescent display device.

[0050] like Figure 2 As shown, the display device 100 includes a display module 1 and a mirror switching screen 2 located on the light-emitting side of the display module 1. The mirror switching screen 2 is configured to switch between a high transmission state and a high reflection state. Specifically, when the mirror switching screen 2 is in the high transmission state, the display image of the display module 1 can be transmitted through the mirror switching screen 2, realizing the display function; when the mirror switching screen 2 is in the high reflection state, external light is reflected by the mirror switching screen 2 to present a mirror image.

[0051] It should be noted that, in order to avoid interference between the display screen of display module 1 and the mirror image presented by mirror switching screen 2, resulting in ghosting, when displaying the display screen of display module 1, mirror switching screen 2 is in a high transmittance state with a transmittance greater than or equal to 90%; when display module 1 is not displaying an image, mirror switching screen 2 is in a high reflectance state with a reflectance greater than or equal to 40%.

[0052] In some embodiments, such as Figure 2 As shown, along the direction from the mirror switching screen 2 to the display module 1, the display module 1 sequentially includes a second absorptive polarizer 3 and a display panel 12, as well as other electronic components. When the display device 100 is a liquid crystal display device, the display device 100 also includes a backlight assembly, which is configured to provide the display panel 12 with the light required to display the image.

[0053] The orthographic projection of the display panel 12 onto the reference plane lies within the orthographic projection of the mirror switching screen 2 onto the reference plane. It should be noted that the reference plane is the plane containing the surface of the mirror switching screen 2 that is furthest from the display panel 12.

[0054] In some embodiments, such as Figure 5 As shown, the display panel 12 includes a display area A1 and a peripheral area A2 located on at least one side of the display area A1.

[0055] Here, display area A1 is the area for displaying images, and display area A1 is configured to set sub-pixels P. Peripheral area A2 is the area where no images are displayed, and peripheral area A2 can be configured to arrange various signal lines required for displaying the screen; peripheral area A2 can also be configured to arrange gate drive circuits that output scan signals to sub-pixels P of display area A1, and source drive circuits that output data signals to sub-pixels P of display area A1, etc.

[0056] In some embodiments, the display panel 12 is an electroluminescent display panel, such as... Figure 6 As shown, the electroluminescent display panel includes a display substrate 121 and an encapsulation layer 122 for encapsulating the display substrate 121.

[0057] Here, the encapsulation layer 122 can be an encapsulation film or an encapsulation substrate.

[0058] like Figure 6As shown, each sub-pixel of the aforementioned display substrate 121 includes a light-emitting device and a pixel driving circuit disposed on the first substrate Sub1. The pixel driving circuit includes a plurality of thin-film transistors 1210. Each thin-film transistor 1210 includes an active layer, a source, a drain, a gate, and a gate insulating layer. The source and drain are respectively in contact with the active layer. The light-emitting device includes an anode 1211, a light-emitting functional layer 1212, and a cathode 1213. The anode 1211 is electrically connected to the source or drain of one of the plurality of thin-film transistors 1210 that serves as a driving transistor. Figure 6 The diagram illustrates the electrical connection between the anode 1211 and the drain of the thin-film transistor 1210.

[0059] The display substrate 121 also includes a pixel defining layer 1214, which includes multiple opening areas, and a light-emitting device is disposed in one of the opening areas.

[0060] In some embodiments, the light-emitting functional layer 1212 includes only the light-emitting layer. In other embodiments, in addition to the light-emitting layer, the light-emitting functional layer 1212 also includes at least one of an electron transport layer (ETL), an electron injection layer (EIL), a hole transport layer (HTL), and a hole injection layer (HIL).

[0061] In some embodiments, such as Figure 6 As shown, the display substrate 121 also includes a planarization layer 1215 disposed between the thin-film transistor 1210 and the anode 1211.

[0062] In some embodiments, such as Figure 6 As shown, the display substrate 121 also includes a first protective layer 1216, which is disposed on the side of the cathode 1213 away from the first substrate Sub1.

[0063] In some embodiments, the display panel 12 is a liquid crystal display panel, such as... Figure 7 As shown, the liquid crystal display panel includes an array substrate 123 and a cell substrate 124 disposed opposite to each other, and a liquid crystal cell 125 disposed between the array substrate 123 and the cell substrate 124.

[0064] Each subpixel P of the array substrate 123 (see Figure 5 Each includes a thin-film transistor 1230 and a pixel electrode 1231 located on a first substrate Sub1. The pixel electrode 1231 is electrically connected to the source or drain of the thin-film transistor 1230. Figure 7The diagram illustrates the electrical connection between the pixel electrode 1231 and the drain of the thin-film transistor 1230.

[0065] In some embodiments, such as Figure 7 As shown, the array substrate 123 also includes a common electrode 1232, which is disposed on the first substrate Sub1.

[0066] For example, the pixel electrode 1231 and the common electrode 1232 can be disposed on the same layer. In this case, both the pixel electrode 1231 and the common electrode 1232 are comb-shaped structures including multiple strip-shaped sub-electrodes.

[0067] For example, the pixel electrode 1231 and the common electrode 1232 may also be disposed on different layers, in which case, such as Figure 7 As shown, a first insulating layer 1233 is disposed between the pixel electrode 1231 and the common electrode 1232.

[0068] Furthermore, when the common electrode 1232 is disposed between the thin-film transistor 1230 and the pixel electrode 1231, such as Figure 7 As shown, a second insulating layer 1234 is disposed between the common electrode 1232 and the thin film transistor 1230.

[0069] In other embodiments, the substrate 14 includes a second substrate Sub2 and a common electrode 1232 disposed on the second substrate Sub2.

[0070] like Figure 7 As shown, the liquid crystal display panel also includes a color filter layer CF and a black matrix pattern BM. The color filter layer CF includes at least red photoresist units disposed in the red subpixels, green photoresist units disposed in the green subpixels, and blue photoresist units disposed in the blue subpixels. The black matrix pattern BM is configured to separate the light emitted from different subpixels and has the function of reducing reflected light generated after ambient light enters the liquid crystal display panel.

[0071] like Figure 7 As shown, the liquid crystal display panel also includes an upper polarizer 126 disposed on the side of the cell substrate 124 away from the liquid crystal cell 125, and a lower polarizer 127 disposed on the side of the array substrate 123 away from the liquid crystal cell 127.

[0072] It should be noted that the upper polarizer 126 (see...) Figure 7 ) and the second absorption polarizer 3 (see Figure 2The same polarizer can be used. In addition, the liquid crystal cell 125 includes an alignment film, a sealant, and liquid crystal molecules. The alignment film is used to configure the initial alignment of the liquid crystal molecules, and the sealant is used to prevent the liquid crystal molecules from leaking, support and connect the first substrate Sub1 and the second substrate Sub2. These are not described in detail in this disclosure.

[0073] In some embodiments, such as Figure 2 As shown, along the direction from the display panel 12 to the mirror switching screen 2, the mirror switching screen 2 includes a reflective polarizer 21, a first transparent substrate 22, a first transparent electrode layer 23, a first alignment film 24, a liquid crystal layer 25, a second alignment film 26, a second transparent electrode layer 27, a second transparent substrate 28, and a first absorptive polarizer 29 arranged sequentially.

[0074] It should be noted that the liquid crystal layer 25 includes a sealant 251 and liquid crystal molecules located between the sealant 251, the first alignment film 24 and the second alignment film 26, which will not be described in detail here.

[0075] Here, in the process of forming the liquid crystal layer 25, it is necessary to first form a sealant 251, a first alignment film 24, and a second alignment film 26. The sealant 251 has a crystal inlet, through which liquid crystal molecules are poured into the space between the sealant 251, the first alignment film 24, and the second alignment film 26. Finally, the crystal inlet is sealed with a sealing adhesive to prevent liquid crystal molecules from flowing out. It should be noted that the sealant 251 can have multiple crystal inlets to improve production efficiency; for example, the sealant 251 has two crystal inlets.

[0076] Among them, the reflective polarizer 21 includes any one of the following: multilayer reflective polarizer film (APF), reflector polarizer mirror (RPM), dualbrightness enhancement film (DBEF), or metal mesh reflective polarizer film.

[0077] For example, the transmission axis of the reflective polarizer 21 is approximately perpendicular to the absorption axis of the first absorptive polarizer 29, the orientation direction of the first alignment film 24 is approximately parallel to the transmission axis of the reflective polarizer 21, and the orientation direction of the second alignment film 26 is approximately parallel to the absorption axis of the first absorptive polarizer 29. In other words, the long axis of the liquid crystal molecules in the liquid crystal layer 25 near the first alignment film 24 is approximately parallel to the transmission axis of the reflective polarizer 21, and the long axis of the liquid crystal molecules in the liquid crystal layer 25 near the second alignment film 26 is approximately parallel to the absorption axis of the first absorptive polarizer 29. The liquid crystal molecules are arranged in layers, with the molecules within each layer having the same orientation, while the orientations of the liquid crystal molecules between layers are misaligned, resulting in an overall helical molecular structure.

[0078] The unpolarized light on the side of the mirror switching screen 2 away from the display panel 12 and the unpolarized light emitted by the display panel 12 can both be decomposed into first polarized light and second polarized light with polarization directions perpendicular to each other. The polarization direction of the first polarized light is approximately parallel to the absorption axis of the first absorptive polarizer 29, that is, approximately perpendicular to the transmission axis of the reflective polarizer 21. The polarization direction of the second polarized light is approximately perpendicular to the absorption axis of the first absorptive polarizer 29, that is, approximately parallel to the transmission axis of the reflective polarizer 21.

[0079] When the display device 100 is in its natural state (no electric field is generated between the first transparent electrode layer 23 and the second transparent electrode layer 27), unpolarized light from the side of the mirror switching screen 2 away from the display panel 12 is directed toward the first absorptive polarizer 29. The first polarized light of this unpolarized light is absorbed by the first absorptive polarizer 29, and the second polarized light passes through the first absorptive polarizer 29 and the second alignment film 26 into the liquid crystal layer 25. After passing through the liquid crystal layer 25, the polarization direction of the second polarized light is deflected by 90° and converted into the first polarized light. The polarization direction of the first polarized light is approximately perpendicular to the transmission axis of the reflective polarizer 21. The first polarized light passes through the first alignment film 24 and is reflected back to the liquid crystal layer 25 by the reflective polarizer 21. After passing through the liquid crystal layer 25 again, the polarization direction of the first polarized light is deflected by 90° and converted into the second polarized light. The second polarized light passes through the second alignment film 26 and the first absorptive polarizer 29 and is directed toward the outside. At this point, if each layer is an ideal dielectric material, the light attenuation will tend to zero, the reflectivity of the mirror switching screen 2 will reach its maximum, and the reflectivity will be greater than or equal to 40%. The mirror switching screen 2 is in the mirror state with the highest reflectivity.

[0080] When the display device 100 is in display mode (with a strong electric field between the first transparent electrode layer 23 and the second transparent electrode layer 27), the liquid crystal molecules align along the direction of the electric field. For example, when the liquid crystal molecules overcome the anchoring force of the first alignment film 24 and the second alignment film 26 and are arranged in a roughly perpendicular manner (the long axis direction of the liquid crystal molecules is roughly parallel to the thickness direction of the mirror switching screen 2), the optical rotation of the liquid crystal molecules disappears, that is, the modulation of polarized light by the liquid crystal layer 25 has no effect, and the polarized light still passes through in its original direction. In this case, the unpolarized light emitted by the display panel 12 is directed towards the reflective polarizer 21. The first polarized light of this unpolarized light is reflected by the reflective polarizer 21, and the second polarized light passes through the reflective polarizer 21 and the first alignment film 24 into the liquid crystal layer 25. After passing through the liquid crystal layer 25, the polarization direction of the second polarized light remains unchanged, and the second polarized light passes through the second alignment film 26 and the first absorptive polarizer 29 and is directed to the outside. At this point, if each layer is an ideal dielectric material, the light attenuation will tend to zero, the transmittance of the mirror switching screen 2 will reach its maximum, and the transmittance will be greater than or equal to 90%. The mirror switching screen 2 will be in a transparent state with the highest transmittance.

[0081] As described above, the transmission axis of the reflective polarizer 21 is approximately perpendicular to the absorption axis of the first absorptive polarizer 29, the orientation direction of the first alignment film 24 is approximately parallel to the transmission axis of the reflective polarizer 21, and the orientation direction of the second alignment film 26 is approximately parallel to the absorption axis of the first absorptive polarizer 29. With this configuration, in its natural state, the mirror switching screen 2 exhibits a mirror-like state with the highest reflectivity, allowing the display device 100 to clearly reflect the external environment. When displaying an image, the mirror switching screen 2 exhibits a transparent state with the highest transmittance, allowing the display device 100 to clearly display the image, while consuming less power.

[0082] Furthermore, to avoid interference between the light reflected from the display panel 12 and the light emitted by the display panel 12, in some embodiments, such as Figure 2 As shown, the display device 100 further includes a second absorptive polarizer 3, which is disposed between the display panel 12 and the mirror switching screen 2. The absorption axis of the second absorptive polarizer 3 is approximately perpendicular to the transmission axis of the reflective polarizer 21. In this case, when the display device 100 is in display mode, the first polarized light of the unpolarized light emitted by the display panel 12 is absorbed by the second absorptive polarizer 3. The second polarized light passes sequentially through the second absorptive polarizer 3, the reflective polarizer 21, the first alignment film 24, the liquid crystal layer 25, the second alignment film 26, and the first absorptive polarizer 29 before being emitted to the outside. This prevents the first polarized light of the unpolarized light emitted by the display panel 12 from being reflected back onto the display panel 12 by the reflective polarizer 21, which would then interfere with the display image and affect the display effect.

[0083] It should be noted that when the display panel 12 is an LCD display panel, Figure 7 The upper polarizer 126 and Figure 2 The second absorptive polarizer 3 can be the same polarizer. When the display panel 12 is an electroluminescent display panel, the second absorptive polarizer 3 can be a circular polarizer on the light-emitting side of the electroluminescent display panel.

[0084] In the process of installing polarizers (including a first absorptive polarizer 29, a second absorptive polarizer 3, and a reflective polarizer 21), the two opposing main surfaces of the polarizers are respectively provided with an adhesive film and a protective film. An operating patch extends beyond the protective film. When installing the polarizers, the operator can pinch the operating patch to align and adhere the polarizer to the carrier. Finally, the operating patch and the protective film are removed to form the polarizer. The operation is simple and the process is easy.

[0085] In some embodiments, such as Figure 8 and Figure 9 As shown, the display device 100 also includes a first photosensitive sensor 41 and a driver board 5.

[0086] The first photosensor 41 is configured to sense the ambient light intensity on the side of the mirror switching screen 2 away from the display panel 12 in real time. The driver board 5 is electrically connected to the first photosensor 41 and the mirror switching screen 2.

[0087] In some embodiments, the drive board 5 is configured to send a first control signal to the mirror switching screen 2 when the light intensity sensed by the first photosensitive sensor 41 is greater than or equal to a first preset light intensity, so as to reduce the reflectivity of the mirror switching screen 2 and thereby achieve the purpose of anti-glare.

[0088] It should be noted that the first preset light intensity can be set according to the actual situation, and this disclosure does not impose specific limitations.

[0089] In other embodiments, the driver board 5 may also be configured to send a corresponding control signal to the mirror switching screen 2 when the difference between the light intensity of the ambient light on the side of the mirror switching screen 2 away from the display panel 12 and the light intensity of the ambient light on the side of the display panel 12 away from the mirror switching screen 2 is greater than or equal to a second preset light intensity, so as to reduce the reflectivity of the mirror switching screen 2 and thus achieve anti-glare.

[0090] For example, such as Figure 2 and Figure 8As shown, the display device 100 also includes a second photosensor 42, which is disposed on the side of the display panel 12 away from the mirror switching screen 2. The second photosensor 42 is configured to sense the ambient light intensity on the backlight side of the display panel 12 in real time. The driving board 5 is also electrically connected to the second photosensor 42, and is further configured to send a third control signal to the mirror switching screen 2 when the difference between the light intensity sensed by the second photosensor 42 and the light intensity sensed by the first photosensor 41 is greater than or equal to a second preset light intensity, thereby reducing the reflectivity of the mirror switching screen 2 and achieving anti-glare.

[0091] It should be noted that the second preset light intensity can be set according to the actual situation, and this disclosure does not impose specific limitations.

[0092] In addition, the aforementioned drive board 5 can also make multiple judgments on the light intensity sensed by the first photosensitive sensor 41 and multiple preset light intensities. Each judgment process is to determine whether the light intensity sensed by the first photosensitive sensor 41 is greater than or equal to the corresponding preset light intensity. If the light intensity sensed by the first photosensitive sensor 41 is greater than or equal to the corresponding preset light intensity, a corresponding control signal is sent to reduce the reflectivity of the mirror switching screen 2 to the corresponding range.

[0093] In some embodiments, such as Figure 1 , Figure 2 and Figure 9 As shown, the display device 100 also includes a first flexible circuit board 6. The first flexible circuit board 6 includes a bonding portion 61, a component portion 62, and a wiring portion 63. The bonding portion 61 is electrically connected to the mirror switching screen 2. A first photosensitive sensor 41 is disposed on the surface of the component portion 62 near the mirror switching screen 2. The wiring portion 63 has wiring that is electrically connected to the bonding pad 610 of the bonding portion 61 and the first photosensitive sensor 41. This wiring is configured to transmit control signals of the mirror switching screen 2 and sensing signals of the first photosensitive sensor 41. The driver board 5 is electrically connected to the first photosensitive sensor 41 and the mirror switching screen 2 respectively through the wiring portion 63 of the first flexible circuit board 6. In this case, the first photosensitive sensor 41 and its circuit wiring connected to the driver board 5, and the circuit wiring connecting the mirror switching screen 2 and the driver board 5 are integrated on the same flexible circuit board, which can save the arrangement space of the circuit wiring and reduce material costs.

[0094] It should be noted that the wiring portion 63 of the first flexible circuit board 6, away from the mirror switching screen 2, has a first connecting portion 631, which is electrically connected to the corresponding interface of the driver board 5. The driver board 5 can be bent to the side of the display panel 12 away from the mirror switching screen 2 via the first flexible circuit board 6.

[0095] The relative positional relationship between the bonding part 61, the component part 62, and the wiring part 63 is not unique. For example, as shown... Figure 1 and Figure 9 As shown, both the bonding part 61 and the component part 62 are located at the end of the wiring part 63 near the mirror switching screen 2. This improves the regularity of the circuit wiring layout, enhances the neatness of the wiring part 63, and reduces the area occupied by the wiring part 63. Furthermore, a gap SL exists between the bonding part 61 and the component part 62 to separate them. This minimizes the impact of the pressing process on the component part 62 during the bonding process between the bonding part 61 and the mirror switching screen 2; and after the bonding part 61 is bonded to the mirror switching screen 2, the pressure between the first photosensitive sensor 41 and the mirror switching screen 2 is reduced, improving reliability.

[0096] For example, the minimum distance between the boundary of the bonding portion 61 near the component portion 62 and the boundary of the component portion 62 near the bonding portion 61 is 25.55mm to 25.95mm. For instance, the minimum distance between the boundary of the bonding portion 61 near the component portion 62 and the boundary of the component portion 62 near the bonding portion 61 is any one of 25.55mm, 25.65mm, 25.75mm, 25.85mm, and 25.95mm.

[0097] In some embodiments, see Figure 2 and Figure 9 The orthographic projection of the first transparent substrate 22 on the reference plane is located within the orthographic projection of the second transparent substrate 28 on the reference plane. The second transparent substrate 28 extends beyond the edge of the first transparent substrate 22 to form a first step 280. A bonding pin is provided on the side of the first step 280 near the display panel 12. A bonding pad 610 is provided on the bonding portion 61 of the first flexible circuit board 6, and the bonding pad 610 is electrically connected to the bonding pin.

[0098] Based on this, the first photosensor 41 is connected to the surface of the first step 280 near the display panel 12. For example, as... Figure 2 , Figure 9 and Figure 11 As shown, the first photosensitive sensor 41 includes a base 411 and a photosensitive chip 412. The first surface 411A of the base 411 has a mounting groove, and the photosensitive chip 412 is disposed within the mounting groove. The second surface 411B of the base 411 has a photosensitive aperture 413. The photosensitive chip 412 is configured to sense the intensity of ambient light on the side of the mirror switching screen 2 away from the display panel 12 through the photosensitive aperture 413. The first surface 411A and the second surface 411B are two opposing surfaces of the base 411.

[0099] In this design, the first surface 411A of the base 411 is connected to the first flexible circuit board 6, and the second surface 411B of the base 411 is bonded to the side of the first step 280 near the display panel 12. Here, the bonding avoids the aforementioned photosensitive hole 413 to ensure the accuracy of the photosensitive chip 412 in sensing the intensity of ambient light on the side of the mirror switching screen 2 away from the display panel 12.

[0100] Here, the mirror switching screen 2 includes a photosensitive area, and the orthographic projection of the first photosensitive sensor 41 on the mirror switching screen 2 at least partially overlaps with the photosensitive area.

[0101] For example, at least part of the area corresponding to the first step 280 of the mirror switching screen 2 is a photosensitive area, that is, at least part of the area of ​​the second transparent substrate 28 extending beyond the edge of the first transparent substrate 22 is not treated in any way to ensure light transmittance. For example, only the second transparent substrate itself is provided in this area, and the orthographic projection of the first photosensitive sensor 41 on the mirror switching screen 2 is located in the photosensitive area.

[0102] For example, a light-transmitting hole is provided on the first step 280, and the area corresponding to the light-transmitting hole is the photosensitive area. That is, an opening is made on the edge of the second transparent substrate 28 that extends beyond the first transparent substrate 22 to form a light-transmitting hole as a photosensitive area. The first photosensitive sensor 41 includes a base 411 and a photosensitive chip 412. The boundary of the photosensitive hole 413 on the base 411 is approximately coincident with the boundary of the light-transmitting hole in the orthographic projection of the mirror switching screen 2.

[0103] Based on this, a light guide structure can be provided in the aforementioned photosensitive area. The light guide structure is configured to conduct ambient light from the side of the mirror switching screen 2 away from the display panel 12 to the photosensitive chip 412 of the first photosensitive sensor 41. For example, the light guide structure is disposed within the aforementioned light-transmitting hole to conduct ambient light from the side of the mirror switching screen 2 away from the display panel 12 to the photosensitive chip 412 of the first photosensitive sensor 41, reducing losses during ambient light transmission and ensuring the accuracy of the photosensitive chip 412 in sensing the intensity of ambient light from the side of the mirror switching screen 2 away from the display panel 12.

[0104] Since the first photosensor 41 needs to receive ambient light, and the first photosensor 41 can be directly seen on the display side of the display device 100, in order to improve the regularity of the display device 100, such as Figure 1 and Figure 9 As shown, the center of the orthographic projection of the first photosensitive sensor 41 onto the reference plane roughly coincides with the center of the orthographic projection of the first step 280 onto the reference plane. In this way, the display device 100 is symmetrically distributed on the left and right sides of the first photosensitive sensor 41, resulting in a neat and aesthetically pleasing overall structure.

[0105] In some embodiments, such as Figure 1 and Figure 2As shown, the orthographic projection of the display panel 12 and the mirror switching screen 2 onto the reference plane is approximately trapezoidal, with the longest of the two parallel sides of the trapezoid forming the first boundary. Based on this, the edge of the second transparent substrate 28 near the first boundary extends beyond the edge of the first transparent substrate 22 near the first boundary, forming a first step 280. This arrangement results in a larger area for the first step 280, facilitating the placement of the first photosensor 41 and the electrical connection between the bonding part 61 and the mirror switching screen 2.

[0106] It should be noted that "roughly trapezoidal" means that the overall shape of the orthographic projection of the display panel 12 and the mirror switching screen 2 onto the reference plane is trapezoidal, but it is not limited to a standard trapezoid. That is, "trapezoidal" here includes not only the shape of a basic trapezoid, but also shapes similar to trapezoids, taking into account manufacturing conditions. For example, the corners of the trapezoid are curved, that is, the corners are smooth, so that the orthographic projection of the display panel 12 and the mirror switching screen 2 onto the reference plane is a rounded trapezoid in the planar view.

[0107] For example, the display device 100 is applied to the rearview mirror 10 of a car (see...). Figure 10 The outer contour of the rearview mirror 10 is roughly trapezoidal, and its lower boundary is the first boundary. That is to say, the first step 280 is located at the lower edge of the mirror switching screen 2, and the flexible circuit board 6 is electrically connected to the mirror switching screen 2 on the lower side of the mirror switching screen 2.

[0108] In some embodiments, such as Figure 2 As shown, the orthographic projection of the second absorptive polarizer 3 onto the reference plane lies within the orthographic projection of the display panel 12 onto the reference plane. The portion of the display panel 12 extending beyond the edge of the second absorptive polarizer 3 forms a second step 120, and the orthographic projection of the first step 280 onto the reference plane at least partially overlaps with the orthographic projection of the second step 120 onto the reference plane. For example, the orthographic projection of the first step 280 onto the reference plane substantially overlaps with the orthographic projection of the second step 120 onto the reference plane. The first flexible circuit board 6 is electrically bonded to the first step 280 in the area where the first step 280 and the second step 120 overlap. In this case, the display device 100 also includes a support member 9, one end of which abuts against the first flexible circuit board 6 at least, and the other end abuts against the second step 120, to provide support for the first flexible circuit board 6. Exemplarily, one end of the support member 9 can abut against both the first flexible circuit board 6 and the first step 280, and the other end abuts against the second step 120, thus providing a greater supporting force and a higher supporting effect for the first flexible circuit board 6.

[0109] It should be noted that, when the display panel 12 is a liquid crystal display panel, the orthographic projections of the cell substrate 124 and the liquid crystal cell 125 onto the reference plane can approximately coincide with the orthographic projection of the second absorptive polarizer 3 onto the reference plane; the orthographic projections of the cell substrate 124 and the liquid crystal cell 125 onto the reference plane are located within the orthographic projection of the array substrate 123 onto the reference plane, and a second step 120 is formed on the portion of the array substrate 123 extending beyond the edge of the second absorptive polarizer 3. When the display panel 12 is an electroluminescent display panel, the display panel 12 extends beyond the second absorptive polarizer 3, and a second step 120 is formed on the portion of the display panel 12 extending beyond the edge of the second absorptive polarizer 3. Figure 2 The illustration uses a liquid crystal display panel (LCD) as an example. Figure 2 The LCD cell 125 is not shown in the image.

[0110] Based on this, such as Figure 2 As shown, the support member 9 can be made of an opaque material, or it can have a light-blocking film on its side wall. In this way, the support member 9 can effectively prevent light leakage while ensuring its supporting performance.

[0111] The elastic modulus of the support member 9 is greater than or equal to 3 GPa. For example, the material of the support member 9 includes at least one of foam, polyimide (PI), and polyethylene terephthalate (PET) plastics.

[0112] In addition, see Figure 2 The first flexible circuit board 6 extends from the side of the support member 9 away from the second absorptive polarizer 3 to the backlight side of the display panel 12. The structure is simple and easy to manufacture.

[0113] In some embodiments, see Figure 8 The driver board 5 is also electrically connected to the display panel 12. The driver board 5 is further configured to drive the display panel 12 to display an image in response to an operator's instruction; and to send a second control signal to the mirror switching screen 2 so that the mirror switching screen 2 transmits the display image from the display panel 12. In this configuration, the control circuitry for driving the display panel 12 and the control circuitry for driving the mirror switching screen 2 to switch states are both integrated on the same driver board 5, which further saves space for circuit wiring and reduces material costs.

[0114] Based on this, such as Figure 8As shown, the display device 100 also includes a second flexible circuit board 7, which is electrically connected to the display panel 12 and the driver board 5. By bending the second flexible circuit board 7 using a bending process, the driver board 5 can be positioned on the side of the display panel 12 away from the mirror switching screen 2, thereby reducing the bezel of the display panel 12.

[0115] It should be noted that some integrated circuits may also be disposed on the second flexible circuit board 7. For example, timing control circuits may be disposed on the second flexible circuit board 7, but this disclosure is not limited thereto. In addition, the end of the second flexible circuit board 7 away from the display panel 12 is provided with a second connecting portion 71, which is electrically connected to the interface corresponding to the driver board 5.

[0116] It is understandable that, such as Figure 1 and Figure 2 As shown, the mirror switching screen 2 includes a display area B1 and a peripheral area B2 located on at least one side of the display area B1, with attached... Figure 5 The illustration is based on the example of the surrounding area B2 enclosing the display area B1.

[0117] Here, display area B1 is the light-transmitting area of ​​the mirror switching screen 2, and display area B1 is configured to house liquid crystal molecules in liquid crystal layer 25. Peripheral area B2 can be configured to arrange various signal lines required for mirror switching screen 2, as well as sealing adhesive 251, etc.

[0118] Among them, the shape of the frame sealant 251 is relatively irregular, which greatly affects the visual effect. Therefore, in order to improve the visual effect, such as... Figure 1 and Figure 2 As shown, the display device 100 further includes a light-shielding layer 8, which is disposed on the side of the second transparent substrate 28 away from the display panel 1.

[0119] For example, such as Figure 2 As shown, the light-shielding layer 8 is disposed between the second transparent substrate 28 and the first absorptive polarizer 29. The first absorptive polarizer 29 at least partially covers the light-shielding layer 8; for example, the first absorptive polarizer 29 completely covers the light-shielding layer 8. The light-shielding layer 8 covers the peripheral area B2 of the mirror switching screen 2 to prevent light leakage. Furthermore, the light-shielding layer 8, disposed between the second transparent substrate 28 and the first absorptive polarizer 29, does not affect the flatness of the side of the first absorptive polarizer 29 away from the display panel 12. Since the light-shielding layer 8 is formed on the surface of the second transparent substrate 28 away from the display panel 12 through a screen printing process, the adhesion between the light-shielding layer 8 and the second transparent substrate 28 is stronger, the light-shielding layer 8 is less likely to fall off, and the reliability is higher.

[0120] For example, such as Figure 3As shown, both the light-shielding layer 8 and the first absorptive polarizer 29 are disposed on the surface of the second transparent substrate 28 away from the display panel 1. The two boundaries of the orthographic projection of the light-shielding layer 8 on the reference surface and the orthographic projection of the first absorptive polarizer 29 on the reference surface are approximately coincident, or there is a gap between the two boundaries of the orthographic projection of the light-shielding layer 8 on the reference surface and the orthographic projection of the first absorptive polarizer 29 on the reference surface. The light-shielding layer 8 covers the peripheral area B2 of the mirror switching screen 2 to prevent light leakage.

[0121] For example, such as Figure 4 As shown, the light-shielding layer 8 is disposed on the side of the first absorptive polarizer 29 away from the display panel 1. The light-shielding layer 8 covers the peripheral area B2 of the mirror switching screen 2 to prevent light leakage.

[0122] Here, the light-shielding layer 8 can be formed on the surface of the second transparent substrate 28 away from the display panel 12 by screen printing or sputtering processes to achieve a narrow bezel design for the display device 100. The material of the light-shielding layer 8 includes ink and / or metal. For example, the material of the light-shielding layer 8 is mirror silver ink or metallic ink. In this way, when the mirror switching screen 2 is in a high-reflection state, using mirror silver ink or metallic ink can ensure that the light-shielding layer 8 is substantially consistent with the display area B1 of the mirror switching screen 2, resulting in a better mirror display effect.

[0123] For example, the material of the light-shielding layer 8 is a volatile drying ink. Specifically, a polymer is dissolved in a solvent and printed onto the surface of the second transparent substrate 28 away from the display panel 12 to form an ink film; the solvent in the ink film diffuses into the atmosphere due to vapor pressure, forming a liquid film on the surface of the ink film, which then evaporates. During the drying process, drying can be accelerated by blowing air. Here, the material of the light-shielding layer 8 is a volatile drying ink, which is a simple process with fast production speed.

[0124] For example, the material of the light-shielding layer 8 is a UV-curable ink. Specifically, the UV-curable ink is printed onto the surface of the second transparent substrate 28 away from the display panel 12; upon exposure to ultraviolet light, the UV ink undergoes a photochemical reaction and is fully cured within seconds. Here, the material of the UV-curable ink may include photopolymer resin, initiator, pigment, and additives.

[0125] For example, the material of the light-shielding layer 8 is an oxidizing and drying type ink. In detail, the oxidizing and drying type ink is printed onto the surface of the second transparent substrate 28 away from the display panel 12; since the oxidizing and drying type ink contains polymers with small molecular weights, it oxidizes in the air and is cured by heat, light or chemical reaction with reactive substances to form a polymer film (light-shielding layer 8).

[0126] In some embodiments, the thickness of the light-shielding layer 8 is 6.5 μm to 7.5 μm. This reduces the impact of increasing the thickness of the light-shielding layer 8 on the overall thickness of the display device 100 while ensuring light shielding. For example, the thickness of the light-shielding layer 8 is any one of 6.5 μm, 7 μm, and 7.5 μm.

[0127] In some embodiments, see Figure 1 The minimum width S2 of the light-shielding layer 8 is 4.3mm to 4.7mm, and the maximum width S1 of the light-shielding layer 8 is 8.89mm to 9.29mm. For example, the minimum width S2 of the light-shielding layer 8 is any one of 4.3mm, 4.4mm, 4.5mm, 4.6mm, and 4.7mm, and the maximum width S1 of the light-shielding layer 8 is any one of 8.89mm, 8.99mm, 9.09mm, 9.19mm, and 9.29mm.

[0128] It should be noted that when defining the width direction, the width direction varies depending on the location of the light-shielding layer 8. For example, the orthographic projection of the light-shielding layer 8 onto the reference plane is strip-shaped, and the aforementioned width direction refers to a direction parallel to the reference plane and perpendicular to the extension direction of the light-shielding layer 8. For instance, the light-shielding layer 8 can be formed by connecting multiple strip-shaped sub-light-shielding patterns. Figure 1 The closed ring shown has each sub-light-shielding pattern extending in one direction and corresponding to a boundary setting of the mirror switching screen 2. At this time, the different sub-light-shielding patterns have different extending directions, and correspondingly different width directions.

[0129] For example, the display device 100 is applied to the rearview mirror 10 of a car (see...). Figure 10 The first step 280 is located at the lower boundary of the display device 100. The width of the light-shielding layer 8 corresponding to the lower boundary of the display device 100 is 8.89mm to 9.29mm, and the width of the light-shielding layer 8 corresponding to the other boundaries of the display device 100 is 4.3mm to 4.7mm.

[0130] It is understandable that, such as Figure 1 and Figure 9 As shown, the light-shielding layer 8 is provided with a clearance hole 81. The orthographic projection of the photosensitive sensor 41 on the reference surface at least partially overlaps with the orthographic projection of the clearance hole 81 on the reference surface, to ensure that the photosensitive sensor 41 can receive ambient light. For example, the orthographic projection of the photosensitive sensor 41 on the reference surface is located within the orthographic projection of the clearance hole 81 on the reference surface, to prevent the light-shielding layer 8 from affecting the light intensity of the ambient light on the side of the mirror switching screen 2 away from the display panel 12 sensed by the first photosensitive sensor 41. The diameter of the clearance hole 81 is 2.5mm to 2.9mm. For example, the diameter of the clearance hole 81 is any one of 2.5mm, 2.6mm, 2.7mm, 2.8mm, and 2.9mm.

[0131] In some embodiments, see Figure 1 Along the first direction X, the maximum dimension L of the display device 100 ranges from 239.64 mm to 240.04 mm. The first direction X is substantially parallel to the side of the display device 100. For example, along the first direction X, the maximum dimension L of the display device 100 ranges from any one of 239.64 mm, 239.74 mm, 239.84 mm, 239.94 mm, and 240.04 mm.

[0132] In some embodiments, see Figure 1 Along the second direction Y, the maximum size W of the display device 100 ranges from 61.2 mm to 61.6 mm. The second direction Y is substantially perpendicular to the first direction X. For example, along the second direction Y, the maximum size W of the display device 100 ranges from any one of 61.2 mm, 61.3 mm, 61.4 mm, 61.5 mm, and 61.6 mm.

[0133] For example, see Figure 1 and Figure 10 The display device 100 is applied to the rearview mirror 10 of a car. The outer contour of the rearview mirror 10 is approximately trapezoidal. The lower boundary of the display device 100 is larger than the upper boundary. The first direction X is approximately parallel to the lower boundary of the display device 100. At this time, along the first direction X, the dimension L of the display device 100 is 239.84 mm, and along the second direction Y, the dimension W of the display device 100 is 61.4 mm.

[0134] It should be noted that "roughly trapezoidal" means that the outer contour of the rearview mirror 10 is generally trapezoidal, but it is not limited to a standard trapezoid. That is, "trapezoidal" here includes not only the shape of a basic trapezoid, but also shapes similar to trapezoids, taking into account manufacturing conditions. For example, the corners of the trapezoid are curved, that is, the corners are smooth, so that the outer contour of the rearview mirror 10 is a rounded trapezoid in the plan view.

[0135] Some embodiments of this disclosure also provide a display device, which includes a display panel, a first photosensor, a first circuit board, and a driver board.

[0136] Here, the light-emitting side of the display panel can switch between a high-transmission state and a high-reflection state. When the light-emitting side of the display panel is in a high-transmission state, the displayed image can be transmitted through the display panel to achieve the display function; when the light-emitting side of the display panel is in a high-reflection state, external light is reflected by the display panel to form a mirror image.

[0137] It should be noted that the display panel of the display device provided in this embodiment may include the display panel 12 and the mirror switching screen 2 of the display device 100 described in the above embodiment. The specific features and structure can be referred to above, and will not be repeated here.

[0138] The first circuit board includes a bonding section, a component section, and a wiring section. A first photosensitive sensor is disposed in the component section, and the wiring section has bonding pads in the bonding section and wiring that is electrically connected to the first photosensitive sensor. The driver board is electrically connected to the display panel through the wiring section of the first circuit board.

[0139] It should be noted that the first circuit board of the display device provided in the embodiments of this disclosure may include the first flexible circuit board 6 of the display device 100 described in the above embodiments. Specific features and structures can be found above, and will not be repeated here. Furthermore, the driving board of the display device provided in the embodiments of this disclosure may include the driving board 5 of the display device 100 described in the above embodiments. Specific features and structures can be found above, and will not be repeated here.

[0140] The display device provided in this disclosure can be combined in a suitable manner with other features and structures included in the display device 100 described in the above embodiments, which will not be elaborated here.

[0141] like Figure 8 and Figure 10 As shown, some embodiments of this disclosure also provide a rearview mirror 10, which includes the display device 100 described in any of the above embodiments.

[0142] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display device, characterized in that, include: Display panel; A mirror-style switching screen is located on the light-emitting side of the display panel; The first photosensitive sensor is configured to sense the intensity of ambient light on the side of the mirror switching screen away from the display panel in real time; The first flexible circuit board includes a bonding part, a component part, and a wiring part. The bonding part is electrically connected to the mirror switching screen. The first photosensitive sensor is disposed on the side of the component part near the mirror switching screen. The wiring part is provided with wiring that is electrically connected to the pins of the bonding part and the first photosensitive sensor. The driver board is electrically connected to the wiring section of the first flexible circuit board; Both the binding part and the component part are located at the end of the wiring part near the mirror switching screen, and there is a gap between the binding part and the component part.

2. The display device according to claim 1, characterized in that, The minimum distance between the boundary of the bonding portion near the component portion and the boundary of the component portion near the bonding portion is 25.55mm to 25.95mm.

3. The display device according to claim 1 or 2, characterized in that, The driver board is also electrically connected to the display panel.

4. The display device according to claim 3, characterized in that, Also includes: The second flexible circuit board is electrically connected to the display panel and the driver board, and the driver board can be bent to the side of the display panel away from the mirror switching screen via the first and second flexible circuit boards.

5. The display device according to claim 1, characterized in that, Along the direction from the display panel to the mirror switching screen, the mirror switching screen includes a reflective polarizer, a first transparent substrate, a first transparent electrode layer, a first alignment film, a liquid crystal layer, a second alignment film, a second transparent electrode layer, a second transparent substrate, and a first absorptive polarizer arranged sequentially. Wherein, the transmission axis of the reflective polarizer is approximately perpendicular to the absorption axis of the first absorptive polarizer, the orientation direction of the first alignment film is approximately parallel to the transmission axis of the reflective polarizer, and the orientation direction of the second alignment film is approximately parallel to the absorption axis of the first absorptive polarizer.

6. The display device according to claim 5, characterized in that, The reflective polarizer includes any one of the following: multilayer reflective polarizer, reflective polarizer, optical brightening film, or metal mesh reflective polarizer.

7. The display device according to claim 5, characterized in that, The orthographic projection of the first transparent substrate onto the reference plane is located within the orthographic projection of the second transparent substrate onto the reference plane; the reference plane is the plane containing the surface of the mirror switching screen that is away from the display panel; Wherein, the second transparent substrate extends beyond the edge of the first transparent substrate to form a first step, and the first step is provided with a bonding pin on the side near the display panel. The bonding portion of the first flexible circuit board is provided with a bonding pad, and the bonding pad is electrically connected to the bonding pin.

8. The display device according to claim 7, characterized in that, The first photosensitive sensor includes a base and a photosensitive chip. A first surface of the base is provided with a mounting groove, and the photosensitive chip is disposed in the mounting groove. A second surface of the base is provided with a photosensitive hole. The photosensitive chip is configured to sense the intensity of ambient light on the side of the mirror switching screen away from the display panel through the photosensitive hole. The first surface and the second surface are two opposing surfaces of the base. The first surface of the base is connected to the first flexible circuit board, and the second surface of the base is bonded to the side of the first step near the display panel.

9. The display device according to claim 7, characterized in that, The center of the orthographic projection of the first photosensitive sensor onto the reference surface roughly coincides with the center of the orthographic projection of the first step onto the reference surface.

10. The display device according to any one of claims 5 to 9, characterized in that, The mirror switching screen includes a display area and a peripheral area located on at least one side of the display area; the display device further includes: A light-shielding layer is disposed on the side of the second transparent substrate away from the display panel, and the light-shielding layer covers the peripheral area.

11. The display device according to claim 10, characterized in that, The light-shielding layer is disposed between the second transparent substrate and the first absorptive polarizer; the first absorptive polarizer at least partially covers the light-shielding layer.

12. The display device according to claim 10, characterized in that, Both the light-shielding layer and the first absorptive polarizer are disposed on the surface of the second transparent substrate away from the display panel. The two boundaries of the orthographic projection of the light-shielding layer on the reference plane and the orthographic projection of the first absorptive polarizer on the reference plane are approximately coincident or have a gap. The reference plane is the plane on the surface of the mirror switching screen away from the display panel.

13. The display device according to claim 10, characterized in that, The light-shielding layer is provided with a clearance hole, and the orthographic projection of the photosensitive sensor on the reference surface at least partially overlaps with the orthographic projection of the clearance hole on the reference surface; wherein, the reference surface is the plane on the surface of the mirror switching screen that is away from the display panel.

14. The display device according to claim 10, characterized in that, The material of the light-shielding layer includes ink and / or metal.

15. The display device according to claim 10, characterized in that, The thickness of the light-shielding layer is 6.5μm to 7.5μm.

16. The display device according to claim 5, characterized in that, Also includes: A second absorptive polarizer is disposed between the display panel and the mirror switching screen, wherein the absorption axis of the second absorptive polarizer is approximately perpendicular to the transmission axis of the reflective polarizer.

17. The display device according to claim 16, characterized in that, The second transparent substrate forms a first step at the edge portion extending beyond the first transparent substrate; The orthographic projection of the second absorptive polarizer on the reference plane is located within the orthographic projection of the display panel on the reference plane. The portion of the display panel extending beyond the edge of the second absorptive polarizer forms a second step, and the orthographic projection of the first step on the reference plane at least partially overlaps with the orthographic projection of the second step on the reference plane. The reference plane is the plane on the surface of the mirror switching screen that is away from the display panel; The display device further includes: The support member has one end abutting against the first flexible circuit board and the other end abutting against the second step.

18. The display device according to claim 17, characterized in that, The first flexible circuit board extends from the side of the support away from the second absorptive polarizer to the backlight side of the display panel.

19. The display device according to claim 1, characterized in that, Also includes: The second photosensor is located on the side of the display panel away from the mirror switching screen; The second photosensitive sensor is configured to sense the intensity of ambient light on the backlight side of the display panel in real time; the driver board is also electrically connected to the second photosensitive sensor.

20. A display device, characterized in that, include: Display panel; The first photosensitive sensor is configured to sense the intensity of ambient light on the light-emitting side of the display panel in real time; A first circuit board includes a bonding section, a component section, and a wiring section. A first photosensitive sensor is disposed in the component section. The wiring section has wiring that is electrically connected to the pins of the bonding section and the first photosensitive sensor. A gap exists between the bonding section and the component section. The driver board is electrically connected to the wiring section of the first circuit board, and the driver board is also electrically connected to the display panel.

21. A rearview mirror, characterized in that, Includes the display device as described in any one of claims 1 to 20.

Images