Display device

Abstract

The invention provides a display device. The display device comprises a cover plate, a display panel, a sensor and an optical structure, the display panel is arranged below the cover plate. And the sensor is arranged below the cover plate. The optical structure is arranged below the cover plate and comprises a polarizer and a quarter-wave plate, wherein the quarter-wave plate is arranged between the polarizer and the sensor.

Description

Technical Field

[0001] The present disclosure relates to an electronic device, and more particularly to a display device. Background Art

[0002] The exposed sensors in electronic devices can easily give users an unpleasant feeling of being monitored. However, if a light shielding layer is used to hide the sensor, the light shielding layer may absorb visible light and adversely affect the image quality. Summary of the invention

[0003] The present disclosure provides a display device that helps reduce the visibility of a sensor.

[0004] According to an embodiment of the present disclosure, a display device includes a cover plate, a display panel, a sensor, and an optical structure. The display panel is disposed under the cover plate. The sensor is disposed under the cover plate. The optical structure is disposed under the cover plate and includes a polarizer and a quarter wave plate, wherein the quarter wave plate is disposed between the polarizer and the sensor.

[0005] In order to make the above features and advantages of the present disclosure more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a schematic top view of a display device according to an embodiment of the present disclosure;

[0007] Figure 2 yes Figure 1 A schematic cross-sectional view of the middle section line I-I';

[0008] Figure 3 yes Figure 2 A magnified schematic diagram of the middle region R;

[0009] Figure 4 and Figure 5 They are Figure 1 Schematic diagram of other cross-sections along the middle section line I-I';

[0010] Figure 6 is a schematic top view of a display device according to another embodiment of the present disclosure;

[0011] Figures 7 to 10 They are Figure 6 Schematic diagrams of various cross-sections along the middle section line I-I';

[0012] Fig.11 yes Figure 1 Another cross-sectional schematic diagram of the center section line II'. DETAILED DESCRIPTION

[0013] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0014] Certain words are used throughout the specification and claims to refer to specific components. It should be understood by those skilled in the art that electronic device manufacturers may refer to the same components by different names. It is not intended to distinguish between components that have the same function but different names. In the following specification and claims, the words "including" and "comprising" are open-ended words and should be interpreted as "including but not limited to...".

[0015] Directional terms mentioned herein, such as "up", "down", "front", "back", "left", "right", etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate, not to limit the present disclosure. In the accompanying drawings, each figure shows the general characteristics of the methods, structures and / or materials used in a particular embodiment. However, these drawings should not be interpreted as defining or limiting the scope or nature covered by these embodiments. For example, for clarity, the relative size, thickness and position of each film layer, region and / or structure may be reduced or enlarged.

[0016] A structure (or layer, element, substrate) described in the present disclosure is located on / above another structure (or layer, element, substrate), which may refer to the two structures being adjacent and directly connected, or it may refer to the two structures being adjacent but not directly connected. Indirect connection means that there is at least one intermediate structure (or intermediate layer, intermediate element, intermediate substrate, intermediate interval) between the two structures, the lower surface of one structure is adjacent to or directly connected to the upper surface of the intermediate structure, and the upper surface of the other structure is adjacent to or directly connected to the lower surface of the intermediate structure. The intermediate structure can be composed of a single-layer or multi-layer physical structure or a non-physical structure, without limitation. In the present disclosure, when a certain structure is disposed "on" another structure, it may refer to that the certain structure is "directly" on the other structure, or it may refer to that the certain structure is "indirectly" on the other structure, that is, at least one structure is sandwiched between the certain structure and the other structure.

[0017] The terms "approximately", "equal to", "equal to" or "same", "substantially" or "approximately" are generally interpreted as within 20% of a given value or range, or within 10%, 5%, 3%, 2%, 1% or 0.5% of a given value or range. In addition, the phrases "a range is from a first value to a second value", "a range is between a first value and a second value" indicate that the range includes the first value, the second value and other values ​​therebetween.

[0018] The ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify the elements. They do not imply or represent any previous ordinal numbers of the element (or elements), nor do they represent the order of one element and another element, or the order of the manufacturing method. The use of these ordinal numbers is only used to make the element with a certain name clearly distinguishable from another element with the same name. The claims and the specification may not use the same words. Accordingly, the first component in the specification may be the second component in the claim.

[0019] The electrical connection or coupling described in the present disclosure may refer to direct connection or indirect connection. In the case of direct connection, the endpoints of the components on the two circuits are directly connected or connected to each other by a conductor segment, and in the case of indirect connection, there is a switch, diode, capacitor, inductor, resistor, other suitable components, or a combination of the above components between the endpoints of the components on the two circuits, but it is not limited to these.

[0020] In the present disclosure, the thickness, length and width can be measured by an optical microscope (OM), and the thickness or width can be measured by a cross-sectional image in an electron microscope, but it is not limited thereto. In addition, any two values ​​or directions used for comparison may have a certain error. In addition, the terms "equal", "equal", "same", "substantially" or "substantially" mentioned in the present disclosure generally represent a range of 10% within a given value or range. In addition, the term "a given range is a first value to a second value", "a given range falls within the range of a first value to a second value" or "a given range is between a first value and a second value" means that the given range includes the first value, the second value and other values ​​therebetween. If the first direction is perpendicular to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees; if the first direction is parallel to the second direction, the angle between the first direction and the second direction may be between 0 degrees and 10 degrees.

[0021] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of the present disclosure.

[0022] In the present disclosure, the electronic device may include a display device, a backlight device, an antenna device, a packaging device, a sensing device or a splicing device, but is not limited thereto. The electronic device may be a bendable or flexible electronic device. The display device may be a non-self-luminous display device or a self-luminous display device. The display device may, for example, include liquid crystal, light-emitting diode, fluorescence, phosphor, quantum dot (QD), other suitable display media or a combination of the foregoing. The antenna device may, for example, include a frequency selective surface (FSS), a radio frequency filter (RF-Filter), a resonator or an antenna, etc. The antenna may be a liquid crystal antenna or a varactor diode antenna. The sensing device may be a sensing device for sensing capacitance, light, heat or ultrasound, but is not limited thereto. In the present disclosure, the electronic device may include electronic components, and the electronic components may include passive components and active components, such as capacitors, resistors, inductors, diodes, transistors, etc. The diode may include a light emitting diode, a varactor diode or a photodiode. The light emitting diode may include, for example, an organic light emitting diode (OLED), a sub-millimeter light emitting diode (mini LED), a micro LED or a quantum dot light emitting diode (quantum dot LED), but is not limited thereto. The splicing device may be, for example, a display splicing device or an antenna splicing device, but is not limited thereto. It should be noted that the electronic device may be any arrangement or combination of the foregoing, but is not limited thereto. The packaging device may be a packaging device suitable for wafer-level packaging (WLP) technology or panel-level packaging (WLP) technology, such as a chip first process or a chip later (RDL first) process. In addition, the appearance of the electronic device may be a rectangular, circular, polygonal, a shape with curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a drive system, a control system, a light source system, etc. to support a display device, an antenna device, a wearable device (for example, including augmented reality or virtual reality), a vehicle-mounted device (for example, including a car windshield), or a splicing device.

[0023] It should be noted that the following embodiments may replace, reorganize, or mix features in several different embodiments to complete other embodiments without departing from the spirit of the present disclosure. Features between embodiments may be mixed and matched as long as they do not violate the spirit of the invention or conflict with each other.

[0024] Figure 1 is a schematic top view of a display device according to an embodiment of the present disclosure. Figure 2 yes Figure 1 A schematic cross-sectional view of the center section line II'. Figure 3 yes Figure 2 Schematic diagram of the enlarged area R in the middle. Figure 4 and Figure 5 They are Figure 1 Schematic diagram of other cross-sections along the center section line II'. Figure 6 is a schematic top view of a display device according to another embodiment of the present disclosure. Figures 7 to 10 They are Figure 6 Schematic diagrams of various cross-sections along the center section line II'. Fig.11 yes Figure 1 Another cross-sectional schematic diagram of the center section line II'.

[0025] Please refer to Figures 1 to 3 The display device 1 may include a cover plate 10, a display panel 11, a sensor 12, and an optical structure 13. The display panel 11 is disposed under the cover plate 10. The sensor 12 is disposed under the cover plate 10. The optical structure 13 is disposed under the cover plate 10 and includes a polarizer 130 and a quarter wave plate 131, wherein the quarter wave plate 131 is disposed between the polarizer 130 and the sensor 12.

[0026] For example, the display device 1 may be a car display device, a medical display device, a public display device, a television, a tablet computer, or a mobile phone, etc., without limitation. Figure 1As shown, the display device 1 may include a display area R1 and a peripheral area R2. The display area R1 may be used to display image information, such as text or images. The peripheral area R2 is located on at least one side of the display area R1 and may be used to set a peripheral circuit (not shown). In some embodiments, the peripheral area R2 may surround the display area R1, but is not limited thereto. In some embodiments, the display device 1 may further include a decorative layer 14 to shield components (such as peripheral circuits, etc.) in the display device 1 that are not intended to be seen by the user. The material of the decorative layer 14, for example, includes an opaque organic polymer material, such as a gray or black organic polymer material (for example, a black matrix), but is not limited thereto. The decorative layer 14 is disposed under the cover plate 10 and is located in the peripheral area R2. The decorative layer 14 may have an opening A1 exposing the display area R1 so that the user can see the image information displayed in the display area R1. In some embodiments, the sensor 12 may be disposed in the peripheral area R2, and in these embodiments, the decorative layer 14 may also have an opening A2 exposing the sensor 12 so that external light can be received by the sensor 12. In some embodiments, although not shown, the number of sensors 12 disposed in the peripheral region R2 may be plural, and the decoration layer 14 may have a plurality of openings A2 that respectively expose the plurality of sensors 12 .

[0027] The cover plate 10 can be used to protect the components or film layers thereunder. The cover plate 10 can be a hard substrate or a flexible substrate. The material of the cover plate 10 includes, for example, glass, quartz, ceramic, sapphire or plastic, but is not limited thereto. The plastic can include polycarbonate (PC), polyimide (PI), polypropylene (PP), polyethylene terephthalate (PET), other suitable flexible materials or a combination of the foregoing materials, but is not limited thereto.

[0028] The display panel 11 can be used to provide image information. The display panel 11 can be a non-self-luminous display panel or a self-luminous display panel. The non-self-luminous display panel can be, for example, a liquid crystal display panel, but is not limited thereto. The self-luminous display panel can be, for example, a light-emitting diode display panel, but is not limited thereto. The light-emitting diode can include, for example, an organic light-emitting diode, a sub-millimeter light-emitting diode, a micro light-emitting diode, or a quantum dot light-emitting diode, but is not limited thereto.

[0029] Taking the liquid crystal display panel as an example, although not shown, the display panel 11 may include an active component array substrate, a color filter substrate, and a liquid crystal layer disposed between the active component array substrate and the color filter substrate, but is not limited thereto. In the architecture of a non-self-luminous display panel, the display device 1 may also include a backlight module 15 to provide illumination light. For example, the backlight module 15 may be a direct-lit backlight module or a side-lit backlight module, which is not limited here. The display panel 11 is disposed on the light-emitting side of the backlight module 15 (for example, the upper side of the backlight module 15) to convert the illumination light into display light with image information (such as grayscale, color).

[0030] The sensor 12 may be used to acquire external images. In some embodiments, the sensor 12 may be used to sense image information of at least one of infrared light and visible light, but is not limited thereto. The sensor 12 may include, for example, a camera (e.g., an IR digital camera that may be used to sense infrared light, an RGB digital camera that may be used to sense visible light, or an RGBIR digital camera that may be used to sense visible light and infrared light), an infrared light sensor (e.g., an infrared light diode), other suitable sensors, or a combination thereof. In some embodiments, the sensor 12 may be part of a driving monitoring system (DMS) or an occupant monitoring system (OMS), but is not limited thereto. In some embodiments, the sensor 12 may be disposed on a pillar, a decorative panel, or other non-display device of a vehicle device.

[0031] The optical structure 13 is disposed corresponding to the sensor 12 to reduce the visibility of the sensor 12 (e.g., to reduce the probability of the human eye detecting the existence of the sensor 12). In this context, the arrangement of one element corresponding to another element means that the element at least partially overlaps the other element in the thickness direction (e.g., direction Z) of the display device 1. In other words, the optical structure 13 at least partially overlaps the sensor 12 in the thickness direction (e.g., direction Z) of the display device 1. In some embodiments, Figure 2 As shown, the orthographic projection of the sensor 12 on the cover plate 10 may completely fall within the orthographic projection of the optical structure 13 on the cover plate 10 , but the present invention is not limited thereto.

[0032] like Figure 3As shown, the optical structure 13 can be disposed between the cover 10 and the sensor 12. In the optical structure 13, the polarizer 130 can be disposed between the quarter wave plate 131 and the cover 10. That is, after the external light (including ambient light and reflected light) passes through the cover 10, it is sequentially transmitted to the polarizer 130 and the quarter wave plate 131 and then transmitted to the sensor 12. In this article, the polarizer 130 generally refers to a structure that can absorb light of a specific polarization direction, and the quarter wave plate 131 generally refers to a structure that can generate a quarter phase difference after the light passes through. For example, each of the polarizer 130 and the quarter wave plate 131 may include an organic material, an inorganic material, or a combination thereof. In some embodiments, the quarter wave plate 131 may be formed by combining layers with different refractive indices, but is not limited thereto. In some embodiments, the angle between the absorption axis (not shown) of the polarizer 130 and the optical axis (e.g., slow axis; not shown) of the quarter wave plate 131 may be between 0 degrees and 90 degrees, that is, 0 degrees < angle < 90 degrees. In some embodiments, the included angle may be 45 degrees plus or minus 10 degrees, that is, 35 degrees < included angle < 55 degrees.

[0033] Generally speaking, ambient light includes vertically polarized light and horizontally polarized light, while reflected light (such as light reflected by the object / person to be tested after the ambient light hits the object / person to be tested) is usually horizontally polarized light. The polarizer 130 can be designed to absorb vertically polarized light in the visible light band (for example, 400nm≦wavelength≦700nm) and allow horizontally polarized light in the visible light band to pass through. In this way, most of the visible light in the reflected light (for example, about 70% to 80% of the visible light) can penetrate the polarizer 130, while only about 40% to 50% of the visible light in the ambient light can penetrate the polarizer 130, thereby achieving the effect of removing the background (reducing the probability / light intensity of the visible light in the ambient light being received by the sensor 12). The horizontally polarized light (including ambient light and reflected light) is then converted into clockwise circularly polarized light by the quarter wave plate 131. After being reflected by the sensor 12, the clockwise circularly polarized light is converted into counterclockwise circularly polarized light and transmitted toward the quarter wave plate 131. The counterclockwise circular polarized light is then converted into vertical polarized light by the quarter wave plate 131. The vertical polarized light is absorbed by the polarizer 130 and cannot be emitted from the optical structure 13. By reducing the probability of visible light reflected by the sensor 12 being transmitted to the human eye, the visibility of the sensor 12 to the human eye can be reduced. In addition, the polarizer 130 can be designed to allow infrared light to pass through. For example, the transmittance of the polarizer 130 for infrared light can be more than 90% (for example, about 95%), so that the IR digital camera system (if any) or the RGBIR digital camera system (if any) can maintain normal operation.

[0034] According to the above, the polarizer 130 and the quarter wave plate 131 in the optical structure 13 are arranged to reduce the visibility of the sensor 12 to the human eye, thereby improving the user's unpleasant feeling of being monitored. In addition, since the optical structure 13 allows visible light to penetrate and can achieve the effect of removing the background (removing visible light in the ambient light), it helps to improve the image quality.

[0035] According to different requirements, the optical structure 13 may also include one or more film layers or elements. Figure 3 As shown, the optical structure 13 may further include a first adhesive layer 132. The first adhesive layer 132 is disposed between the quarter wave plate 131 and the polarizer 130 to bond the quarter wave plate 131 to the polarizer 130. The material of the first adhesive layer 132 may include, for example, optical clear adhesive (OCA) or optical clear resin (OCR), but is not limited thereto.

[0036] In some embodiments, Figure 3 As shown, the optical structure 13 may further include a second adhesive layer 133. The second adhesive layer 133 is disposed between the polarizer 130 and the cover plate 10 to bond the polarizer 130 to the cover plate 10. The material of the second adhesive layer 133 may refer to the material of the first adhesive layer 132, and will not be repeated here.

[0037] In some embodiments, Figure 3 As shown, the optical structure 13 may further include a substrate 134, a substrate 135, and a substrate 136. The substrate 134 and the substrate 135 are respectively disposed on opposite surfaces of the polarizer 130, wherein the substrate 134 is disposed between the polarizer 130 and the cover plate 10, and the substrate 135 is disposed between the polarizer 130 and the first adhesive layer 132. The substrate 136 is disposed on the surface of the quarter wave plate 131 away from the first adhesive layer 132. The materials of the substrates 134, 135, and 136 include, for example, polyethylene terephthalate (PET), polyethylene (PE), triacetate cellulose (TAC), or a combination thereof, but are not limited thereto.

[0038] In some embodiments, Figure 3As shown, the optical structure 13 may further include a surface treatment layer 137. The surface treatment layer 137 is disposed on the surface of the quarter wave plate 131 away from the cover plate 10. In the case where a substrate 136 is provided, the surface treatment layer 137 may be disposed on the surface of the substrate 136 away from the cover plate 10. The surface treatment layer 137 may include, for example, an antiglare layer, a low reflection layer, an antireflection layer, an antistatic layer, a protective layer, or a combination of at least two of the above, but is not limited thereto.

[0039] In some embodiments, Figure 3 As shown, the optical structure 13 may further include a phase difference plate 138. The phase difference plate 138 may be disposed between the polarizer 130 and the quarter wave plate 131 or between the quarter wave plate 131 and the sensor 12. For example, the phase difference plate 138 may be disposed on the surface of the quarter wave plate 131 facing the cover plate 10 and between the quarter wave plate 131 and the first adhesive layer 132, or the phase difference plate 138 may be disposed on the surface of the quarter wave plate 131 facing the sensor 12 and between the quarter wave plate 131 and the substrate 136, but is not limited thereto. The phase difference plate 138 may be any type of phase difference plate, as long as it can compensate for the phase delay amount under side view, so that the visibility of the sensor 12 to the human eye can also be reduced under side view. For example, the phase difference plate 138 may include an A-plate, a C-plate, an O-plate, or a combination of at least two of the above, but is not limited thereto.

[0040] Any film layer in the optical structure 13 may be transparent or doped with dyes or colored particles (such as gray dyes or gray particles) to reduce the opening A2 (see Figure 2 ) and the decorative layer 14, so that the visibility of the sensor 12 to the human eye is further reduced. For example, the material of the first adhesive layer 132 and / or the second adhesive layer 133 may further include colored particles or dyes (such as gray particles or gray dyes) to reduce the color difference between the area where the opening A2 is located and the decorative layer 14, so that the visibility of the sensor 12 to the human eye is further reduced.

[0041] In other embodiments, although not shown, the optical structure 13 may increase or decrease one or more film layers. For example, the optical structure 13 may omit the surface treatment layer 137, the phase difference plate 138, or a combination of the above two, but is not limited thereto. The optical structure 13 in any embodiment of the present disclosure may adopt Figure 3 The structure shown or the alternative structure as described above will not be repeated below.

[0042] Please refer to Figure 2According to different requirements, the display device 1 may further include other elements or film layers. For example, the display device 1 may further include a sleeve 16 to fix the sensor 12. In some embodiments, the sleeve 16 may be fixed on the surface of the optical structure 13 away from the cover plate 10, but is not limited thereto.

[0043] In some embodiments, Figure 2 As shown, the display device 1 may further include polarizers 17 and 18. The polarizers 17 and 18 are respectively disposed on opposite surfaces (eg, upper and lower surfaces) of the display panel 11, wherein the polarizers 17 and 18 may have absorption axes that are perpendicular or parallel to each other.

[0044] In some embodiments, Figure 2 As shown, the display device 1 may further include an adhesive layer AD to bond the polarizer 17 to the cover plate 10. The material of the adhesive layer AD may refer to the material of the first adhesive layer 132, and will not be repeated here.

[0045] Please refer to Figure 4 , the display device 1A and Figure 2 The main difference between the display device 1 and the display device 1A is that the display device 1A further includes an ink layer 19. The ink layer 19 overlaps the sensor 12, and the transmittance of the ink layer 19 to visible light is greater than 0% and less than 100%. For example, the transmittance of the ink layer 19 to visible light is greater than or equal to 30% and less than or equal to 95%, greater than or equal to 40% and less than or equal to 95%, greater than or equal to 50% and less than or equal to 95%, greater than or equal to 60% and less than or equal to 95%, greater than or equal to 70% and less than or equal to 95%, but not limited thereto. In some embodiments, the ink layer 19 can be formed by printing or coating. In some embodiments, the transmittance of the ink layer 19 can be regulated by pattern design, material composition or thickness, etc. In some embodiments, the ink layer 19 and the decorative layer 14 can have the same or different materials. When the ink layer 19 and the decorative layer 14 have the same material, the transmittance of the ink layer 19 can be improved by forming a light-transmitting opening by pattern design or reducing the thickness of the ink layer 19. When the ink layer 19 and the decoration layer 14 are made of different materials, an appropriate light-transmitting material may be selected to form the ink layer 19 to improve the transmittance of the ink layer 19 .

[0046] By forming the ink layer 19 overlapping the sensor 12 , the color difference between the area where the opening A2 is located and the decoration layer 14 can be reduced, so that the visibility of the sensor 12 to the human eye is further reduced.

[0047] exist Figure 4 In the embodiment, the ink layer 19 is disposed in the opening A2 and between the optical structure 13 and the cover plate 10, but the present disclosure is not limited thereto. Figure 5As shown in the display device 1B, the ink layer 19 may be disposed on a surface of the cover plate 10 away from the display panel 11 .

[0048] exist Figure 2 , Figure 4 and Figure 5 In the embodiment, the optical structures 13 are all disposed on the surface of the cover plate 10 facing the display panel 11, but the present disclosure is not limited thereto. In other embodiments, although not shown, the optical structures 13 may be disposed on the surface of the cover plate 10 away from the display panel 11; or, the ink layer 19 and the optical structures 13 are both disposed on the surface of the cover plate 10 away from the display panel 11, and the optical structures 13 are located between the ink layer 19 and the sensor 12. Figure 2 , Figure 4 and Figure 5 Although the display panel 11 is illustrated as a non-self-luminous display panel, in other embodiments, although not shown, the display panel 11 may be replaced with a self-luminous display panel. In these embodiments, the display device may omit the backlight module 15.

[0049] Please refer to Figure 6 as well as Figure 7 , the display device 1C and Figure 1 as well as Figure 2 The main differences of the display device 1 are described below. In the display device 1C, the sensor 12 is disposed in the display area R1. In some embodiments, although not shown, the number of sensors 12 disposed in the display area R1 may be multiple. Taking the vehicle display device as an example, multiple sensors 12 may be disposed in the black area (not the area mainly used for display) of the instrument panel. In some embodiments, as Figure 7 As shown, the sleeve 16 can be embedded in the opening A3 of the polarizer 18. In addition, the portion P11 of the display panel 11 overlapping with the sensor 12 and the portion P12 of the display panel 11 not overlapping with the sensor 12 may have different stacking structures. For example, the portion P11 may include a light-transmitting layer (e.g., a substrate, a dielectric layer, and a protective layer, etc.) and does not include a non-light-transmitting layer or a dimming layer (e.g., a liquid crystal layer, a metal layer, and a filter layer, etc.). In addition, the display panel 11 may include a baffle 110, wherein the baffle 110 is disposed at the junction of the portion 11 and the portion 12 to maintain the liquid crystal material in an area outside the sensor 12. In some embodiments, the baffle 110 may be made of a light-shielding material (e.g., a black matrix) to reduce light leakage, but is not limited thereto. Furthermore, the display device 1C may also include a baffle 20, wherein the baffle 20 is disposed on the side wall of the opening A4 of the polarizer 17, and the baffle 20 may be made of a light-shielding material (e.g., a black matrix) to reduce light leakage, but is not limited thereto.

[0050] exist Figure 7In the display device 1C, the display device 1C also includes an ink layer 19 overlapping the sensor 12, and the ink layer 19 has a visible light transmittance greater than 0% and less than 100%. For example, the visible light transmittance of the ink layer 19 is greater than or equal to 30% and less than or equal to 95%, greater than or equal to 40% and less than or equal to 95%, greater than or equal to 50% and less than or equal to 95%, greater than or equal to 60% and less than or equal to 95%, greater than or equal to 70% and less than or equal to 95%, but the present invention is not limited thereto. In addition, Figure 7 The ink layer 19 is schematically shown to be disposed between the cover plate 10 and the optical structure 13, but the present disclosure is not limited thereto. In other embodiments, although not shown, the ink layer 19 may be disposed on the surface of the cover plate 10 away from the display panel 11; or, the ink layer 19 and the optical structure 13 are both disposed on the surface of the cover plate 10 away from the display panel 11, and the optical structure 13 is disposed between the ink layer 19 and the cover plate 10; or, the display device 1C may omit the ink layer 19.

[0051] Please refer to Figure 8 , the display device 1D and Figure 7 The main differences of the display device 1C are described below. In the display device 1D, the portion P11 of the display panel 11 that overlaps with the sensor 12 is removed (see Figure 7 ), and the sleeve 16 is embedded in the opening A3 of the polarizer 18, the hollow area of ​​the display panel 11 and the opening A4 of the polarizer 17.

[0052] Figure 8 The ink layer 19 is schematically shown to be disposed between the cover plate 10 and the optical structure 13, but the present disclosure is not limited thereto. In other embodiments, although not shown, the ink layer 19 may be disposed on the surface of the cover plate 10 away from the display panel 11; or, the ink layer 19 and the optical structure 13 are both disposed on the surface of the cover plate 10 away from the display panel 11, and the optical structure 13 is disposed between the ink layer 19 and the cover plate 10; or, the display device 1C may omit the ink layer 19.

[0053] Please refer to Fig. 9 , the display device 1E and Figure 7 The main differences of the display device 1C are described as follows. In the display device 1E, the display panel 11' is a self-luminous display panel, such as a light-emitting diode display panel, but is not limited thereto. The sleeve 16 is embedded in the display panel 11', wherein a portion P11' of the display panel 11' overlapping with the sensor 12 and a portion P12' of the display panel 11' not overlapping with the sensor 12 may have different stacking structures. For example, the portion P11' may include a light-transmitting layer (e.g., a substrate, a dielectric layer, and a protective layer, etc.) and does not include a non-light-transmitting layer or a dimming layer (e.g., a light-emitting layer, a metal layer, and a filter layer, etc.).

[0054] In some embodiments, although not shown, the display device 1E may further include a polarizer disposed between the display panel 11' and the cover plate 10, and the polarizer may have an opening corresponding to the sensor 12 (see, for example, Figure 7 The display device 1E may further include a retaining wall disposed on the side wall of the opening of the polarizer, but is not limited thereto.

[0055] Fig. 9 The ink layer 19 is schematically shown to be disposed between the cover plate 10 and the optical structure 13, but the present disclosure is not limited thereto. In other embodiments, although not shown, the ink layer 19 may be disposed on the surface of the cover plate 10 away from the display panel 11'; or, the ink layer 19 and the optical structure 13 are both disposed on the surface of the cover plate 10 away from the display panel 11', and the optical structure 13 is disposed between the ink layer 19 and the cover plate 10; or, the display device 1C may omit the ink layer 19.

[0056] In some embodiments, although not shown, the optical structure 13 of the display device 1E can be provided corresponding to the sensor 12 (i.e., provided corresponding to the portion P11' where the display panel 11' overlaps with the sensor 12), and can also be provided corresponding to the portion P12' of the display panel 11' that does not overlap with the sensor 12. The optical structure 13 can be, for example, a continuous structure extending from the corresponding portion P11' to the corresponding portion P12'. The optical structure 13 overlaps the display panel 11 and the sensor 12.

[0057] Please refer to Fig.10 , the display device 1F and Fig. 9 The main differences of the display device 1E are described below. In the display device 1F, the portion P11' of the display panel 11' that overlaps with the sensor 12 is removed (see Fig. 9 ), and the sleeve 16 is embedded in the hollow area of ​​the display panel 11 ′ and the opening of the polarizer (if any) provided between the display panel 11 ′ and the cover plate 10 .

[0058] Fig.10 The ink layer 19 is schematically shown to be disposed between the cover plate 10 and the optical structure 13, but the present disclosure is not limited thereto. In other embodiments, although not shown, the ink layer 19 may be disposed on the surface of the cover plate 10 away from the display panel 11'; or, the ink layer 19 and the optical structure 13 are both disposed on the surface of the cover plate 10 away from the display panel 11', and the optical structure 13 is disposed between the ink layer 19 and the cover plate 10; or, the display device 1C may omit the ink layer 19.

[0059] In some embodiments, although not shown, the optical structure 13 of the display device 1F may be provided in addition to corresponding to the sensor 12, and may also be provided in correspondence with the portion P12' of the display panel 11' that does not overlap with the sensor 12. The optical structure 13 may be, for example, a continuous structure extending from the corresponding sensor 12 to the corresponding portion P12'. The optical structure 13 overlaps the display panel 11 and the sensor 12. Fig.11 , the display device 1G and Figure 2 The main differences of the display device 1 are described as follows. In the display device 1G, the polarizer 130 overlaps the display panel 11 and the sensor 12, that is, the display panel 11 and the optical structure 13 share the polarizer 130, so the display device 1G can omit Figure 2 Polarized photons 17. Based on the accompanying diagram, Fig.11 Not shown Figure 2 The adhesive layer AD in the optical structure 13 is not shown, and other film layers except the polarizer 130 and the quarter-wave plate 131 are not shown (see Figure 3 ), but it should be understood that the display device 1G and the optical structure 13 in the display device 1G can increase or decrease one or more elements or film layers according to needs. Furthermore, any embodiment of the present disclosure (including those shown in the drawings and those described in the text) can adopt the design of the shared polarizer 130, which will not be repeated here.

[0060] In summary, in the embodiments of the present disclosure, the optical structure is arranged to help reduce the visibility of the sensor, thereby improving the user's unpleasant feeling of being monitored.

[0061] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

[0062] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that any person skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure, and the features between the embodiments can be arbitrarily mixed and replaced with each other to form other new embodiments. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any person skilled in the art can understand the current or future developed processes, machines, manufacturing, material compositions, devices, methods and steps from the disclosure content of the present disclosure, as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment. The scope of protection of the present disclosure shall be determined by the attached claims.

Claims

1. A display device, characterized in that: include: Cover plate; A display panel, arranged under the cover plate; A sensor, arranged under the cover plate; as well as The optical structure is arranged under the cover plate and comprises a polarizer and a quarter wave plate, wherein the quarter wave plate is arranged between the polarizer and the sensor.

2. The display device according to claim 1, characterized in that The sensor is used for sensing image information of at least one of infrared light and visible light.

3. The display device according to claim 1, characterized in that The optical structure also includes: The first adhesive layer is disposed between the quarter wave plate and the polarizer.

4. The display device according to claim 1, characterized in that The optical structure also includes: The second adhesive layer is disposed between the polarizer and the cover plate.

5. The display device according to claim 1, characterized in that The optical structure also includes: The surface treatment layer is arranged on the surface of the quarter wave plate away from the cover plate.

6. The display device according to claim 1, characterized in that: The optical structure also includes: The phase difference plate is arranged between the polarizer and the quarter wave plate or between the quarter wave plate and the sensor.

7. The display device according to claim 1, characterized in that: The polarizer overlaps the display panel and the sensor.

8. The display device according to claim 1, characterized in that: The display device includes a display area and a peripheral area, and the sensor is arranged in the peripheral area.

9. The display device according to claim 1, characterized in that: The display device includes a display area and a peripheral area, and the sensor is arranged in the display area.

10. The display device according to claim 1, characterized in that: Also includes: The ink layer is disposed between the display panel and the cover plate or on a surface of the cover plate away from the display panel and overlaps the sensor.

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