Display device

Abstract

The invention discloses a display device which comprises a display layer, a lower polarizing plate, a film layer group, a camera module and a backlight module. The lower polarizing plate is located below the display layer. The lower polarizing plate is located between the film layer set and the display layer, and the film layer set is provided with a first area and a second area. The camera module is arranged corresponding to the first area. The film layer group is located between the backlight module and the lower polarizing plate, the outer haze of the first area is 0, and the total haze of the second area is larger than 0.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a display device including a camera module. Background Art

[0002] In current display devices, the polarization and haze settings on the display surface often affect the image quality presented by the display. Therefore, effectively arranging the polarization and haze settings on the display surface can improve the image quality of the display device. However, the haze device will affect the image shooting quality of the under-display camera (UDC), so polarizers have become a very important part in the design of display devices. Summary of the invention

[0003] The invention provides a display device, the image shooting quality of the camera module of which is good.

[0004] The display device of the present invention comprises a display layer, a lower polarizing plate, a film layer group, a camera module and a backlight module. The lower polarizing plate is located below the display layer. The lower polarizing plate is located between the film layer group and the display layer, and the film layer group has a first area and a second area. The camera module is arranged corresponding to the first area. The film layer group is located between the backlight module and the lower polarizing plate, wherein the outer haze of the first area is 0, and the total haze of the second area is greater than 0.

[0005] The display device of the present invention comprises a display layer, a lower polarizing plate, a film layer group, a camera module and a backlight module. The lower polarizing plate is located below the display layer. The lower polarizing plate is located between the film layer group and the display layer, and the film layer group has a first area and a second area. The camera module is arranged corresponding to the first area. The film layer group is located between the backlight module and the lower polarizing plate, wherein the first area has a flat outer surface on a side facing the camera module, and the second area includes scattering particles.

[0006] In one embodiment of the present invention, the internal haze of the first zone is 0-70%.

[0007] In an embodiment of the present invention, the film layer set includes a first bonding layer and a protection layer, and the protection layer is located between the first bonding layer and the backlight module.

[0008] In one embodiment of the present invention, the first bonding layer has scattering particles.

[0009] In one embodiment of the present invention, the side of the protection layer facing the camera module has a flat outer surface.

[0010] In one embodiment of the present invention, the inner haze of the second zone is 5-70%, and the outer haze of the second zone is 0-70%.

[0011] In one embodiment of the present invention, the total haze of the first region is smaller than the total haze of the second region.

[0012] In one embodiment of the present invention, the above-mentioned film layer group includes a first bonding layer, a film and a second bonding layer. The first bonding layer is located between the lower polarizing plate and the film, and the film is located between the first bonding layer and the second bonding layer.

[0013] In one embodiment of the present invention, the second bonding layer corresponds to the first region and a width of the second bonding layer along a first direction is smaller than a width of the first bonding layer along the first direction, and the first direction is perpendicular to a normal direction of the display layer.

[0014] In one embodiment of the present invention, the second bonding layer has two opposite oblique edges, each of which is inclined toward the center of the first region and has an angle with the diaphragm.

[0015] In one embodiment of the present invention, the aforementioned angle is less than 60 degrees.

[0016] In one embodiment of the present invention, the angle is between 5 degrees and 80 degrees.

[0017] In one embodiment of the present invention, a side of the second bonding layer facing the camera module has a flat outer surface.

[0018] In one embodiment of the present invention, in the normal direction of the display layer, the second bonding layer has a thickness less than 20 micrometers.

[0019] In one embodiment of the present invention, in the normal direction of the display layer, the second bonding layer has a thickness ranging from 5 micrometers to 200 micrometers.

[0020] In an embodiment of the present invention, the width of the camera module along a first direction is smaller than the width of the first region along the first direction, and the first direction is perpendicular to the normal direction of the display layer.

[0021] Based on the above, in the display device of the present invention, the film layer group is located between the backlight module and the lower polarizer. The first area of ​​the film layer group has a flat outer surface facing the camera module, the outer haze of the first area is 0, the second area includes scattering particles, and the total haze of the second area is greater than 0. Since the camera module is arranged corresponding to the first area, the image quality can be improved when the camera module is shooting, and through the design of the film layer group, when the display layer of the display device emits light, the display device can have good shooting quality. In this way, the display device can take into account both LCD moire-free and UDC image discrimination accuracy.

[0022] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A is a schematic top view of a display device according to an embodiment of the present invention;

[0024] Figure 1B for Figure 1A A partial enlarged schematic diagram of a display device;

[0025] Figure 2 for Figure 1A A schematic cross-sectional view along the section line I-I';

[0026] Figures 3 to 6 Schematic cross-sectional view of display devices according to multiple embodiments of the present invention.

[0027] Explanation of symbols

[0028] 100, 100B, 100C, 100D, 100E: display device

[0029] 130: Display layer

[0030] 140:Lower polarizing plate

[0031] 150, 150B, 150C, 150D, 150E: Film layer group

[0032] 151, 151B, 151C, 151E: first bonding layer

[0033] 152: Diaphragm

[0034] 1521: Surface

[0035] 153: Second bonding layer

[0036] 1531: Bevel

[0037] 1532: Outer surface

[0038] 154, 154D: Protective layer

[0039] 1541, 1541D: Outer surface

[0040] 160: Camera module

[0041] 170: Backlight module

[0042] 180: Upper polarizing plate

[0043] A1: Area 1

[0044] A2: Second District

[0045] DA: Display Area

[0046] FA: Frame

[0047] I-I': section line

[0048] TA: light transmission area

[0049] W1:Thickness

[0050] X, Y, Z: direction

[0051] θ: Angle DETAILED DESCRIPTION

[0052] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. As those skilled in the art will realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention.

[0053] In the accompanying drawings, the thickness of layers, films, panels, regions, etc. is magnified for clarity. Throughout the specification, the same reference numerals represent the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it may be directly on or connected to another element, or an intermediate element may also exist. On the contrary, when an element is referred to as being "directly on" or "directly connected to" another element, there is no intermediate element. As used herein, "connection" may refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may be the presence of other elements between two elements.

[0054] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is turned over, the elements described as being on the "lower" side of the other elements will be oriented on the "upper" side of the other elements. Therefore, the exemplary term "lower" can include both "lower" and "upper" orientations, depending on the particular orientation of the figure. Similarly, if the device in one figure is turned over, the elements described as being "below" or "beneath" other elements will be oriented as being "above" the other elements. Therefore, the exemplary terms "above" or "below" can include both above and below orientations.

[0055] As used herein, "about", "approximately", or "substantially" includes the stated value and an average value within an acceptable deviation range of a particular value determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately", or "substantially" can select a more acceptable deviation range or standard deviation depending on the optical property, etching property or other property, and can apply to all properties without one standard deviation.

[0056] Exemplary embodiments are described herein with reference to cross-sectional views as schematic diagrams of idealized embodiments. Therefore, variations in the shapes of the illustrations as a result of, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments described herein should not be interpreted as being limited to the specific shapes of the regions as shown herein, but rather include shape deviations, for example, caused by manufacturing. For example, a region shown or described as flat may typically have rough and / or nonlinear features. In addition, the sharp angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shape of the regions, and are not intended to limit the scope of the claims.

[0057] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0058] Figure 1A FIG. 1 is a schematic top view of a display device according to an embodiment of the present invention. Figure 1B Based on Figure 1A A partial enlarged schematic diagram of a display device. Figure 2 for Figure 1A Schematic cross-section along II'. It should be noted that the X direction, Y direction, and Z direction are marked in the figure to show the configuration relationship of each component in the figure, and the X direction, Y direction, and Z direction intersect each other, but this is not limited to it.

[0059] Please refer to Figure 1A and Figure 1B In this embodiment, the display device 100 has an outer frame FA around it. The outer frame FA of the display device 100 includes a display area DA and a light-transmitting area TA. In this embodiment, the light-transmitting area TA is located in the display area DA, and the display area DA surrounds the light-transmitting area TA, but the present invention is not limited thereto.

[0060] Please refer to Figure 2 In this embodiment, the display device 100 includes an upper polarizer 180, a display layer 130, a lower polarizer 140, a film layer group 150, a camera module 160 and a backlight unit 170. It should be noted that Figure 2 Some non-relevant structures are omitted to facilitate display and identify the required component parts.

[0061] In the present embodiment, the display layer 130 includes a substrate and a plurality of pixels. An active device array layer and a liquid crystal layer structure may be selectively provided on the substrate, but the present invention is not limited thereto. The substrate may be, for example, a flat plate-shaped member having a supporting force, such as a glass substrate or a plastic substrate. A plurality of pixels are arranged in an array on the substrate, for example, along the X direction and the Y direction, but not limited thereto. In some embodiments, each pixel may include a light-emitting element, such as a light-emitting diode. The light-emitting diode may, for example, include an organic light-emitting diode (OLED), a sub-micron light-emitting diode (mini LED), a micro light-emitting diode (micro LED) or a quantum dot light-emitting diode (quantum dot, QD, which may be, for example, QLED, QDLED), fluorescence, phosphorescence or other suitable materials and the materials may be arranged and combined arbitrarily, but not limited thereto. In some embodiments, the light-emitting element may be a light-emitting chip, and each pixel may be coupled to the substrate in the form of a chip on board (COB), that is, the light-emitting chip as a pixel may be electrically connected to the substrate.

[0062] In this embodiment, the upper polarizing plate 180 is located above the display layer 130, the lower polarizing plate 140 is located below the display layer 130, and the display layer 130 is located between the upper polarizing plate 180 and the lower polarizing plate 140. Specifically, the upper polarizing plate 180 and the lower polarizing plate 140 may include a multi-layer film structure. The multi-layer film structure is, for example, a pressure sensitive adhesive (PSA), a triacetate cellulose (TAC) film, or a polyvinyl alcohol (PVA) film, but is not limited thereto.

[0063] In this embodiment, the lower polarizing plate 140 is located between the film layer group 150 and the display layer 130, and the film layer group 150 has a first area A1 and a second area A2. The second area A2 surrounds the first area A1. The camera module 160 is arranged corresponding to the first area A1. Specifically, in the Z direction, the light-transmitting area TA, the first area A1 and the camera module 160 are aligned in sequence. Here, the display device 100 is a UDC liquid crystal display (LCD), and the lens can be hidden under the display panel, but the present invention is not limited to this.

[0064] In this embodiment, the film layer group 150 is located between the backlight module 170 and the lower polarizer 140. The first area A1 has a flat outer surface on the side facing the camera module 160, and the outer haze of the first area A1 is 0. The second area A2 includes scattering particles that can scatter ambient light. The total haze of the second area A2 is greater than 0 and is not equal to 0. It should be noted that the scattering particles in the figure are only schematically illustrated as circles, and their form is not limited to this. In one embodiment, the particle size of the scattering particles is about 1 micron to 5 microns, but is not limited to this.

[0065] Under the above configuration, the camera module 160 is arranged corresponding to the first area A1. When the camera module 160 is shooting, the image quality can be improved. And through the design of the film layer group 150, when the display layer 130 emits light, the display device 100 can have good picture quality. In this way, the display device 100 can take into account both LCD moire-free and UDC image discrimination accuracy. In some embodiments, the UDC image modulation transfer function (MTF) value can be improved to more than 50, effectively improving the driver monitoring system (DMS) image detection quality.

[0066] In this embodiment, the width of the camera module 160 along the first direction (for example, the Y direction) is smaller than the width of the first area A1 along the first direction, and the first direction is perpendicular to the normal direction of the display layer 130 (for example, the Z direction), so the camera can be completely arranged corresponding to the light-transmitting area TA. In this embodiment, the camera module 160 is arranged between the backlight module 170 and the film layer group 150, but in other embodiments, the camera module 160 can also be arranged below the backlight module 170, and the present invention is not limited to this.

[0067] Specifically, in the present embodiment, the film layer group 150 includes a first bonding layer 151 and a protective layer 154. The protective layer 154 is located between the first bonding layer 151 and the backlight module 170. The side of the protective layer 154 facing the camera module 160 has a flat outer surface 1541. Here, the first bonding layer 151 is, for example, a pressure sensitive adhesive (PSA), but not limited thereto. Here, the protective layer 154 is, for example, a scratch-resistant hardened film layer (HC), but not limited thereto.

[0068] In this embodiment, the second area A2 includes scattering particles. Specifically, the first bonding layer 151 has scattering particles, so that the total haze of the film layer group 150 is greater than zero.

[0069] Other embodiments will be listed below for illustration. It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the previous embodiments, and the following embodiments will not be repeated.

[0070] Figures 3 to 6 is a cross-sectional schematic diagram of a display device according to multiple embodiments of the present invention. Figure 3 In this embodiment, the display device 100B includes a film layer group 150B. The first bonding layer 151B of the film layer group 150B has different haze degrees. The first bonding layer 151B is, for example, a PSA with added scattering particles, and can show different haze degrees according to different addition amounts, but is not limited thereto. Specifically, the haze degree of the first bonding layer 151B corresponding to the first area A1 is less than the haze degree of the first bonding layer 151B corresponding to the second area A2, so that the total haze of the first area A1 is less than the total haze of the second area A2, and the inner haze of the first area A1 can be designed to be 0-70% and the outer haze is 0. When the camera module 160 is shooting, the image quality can be improved, and through the design of the film layer group 150B, when the display layer 130 emits light, the display device 100B can have good picture quality. In this embodiment, the inner haze of the second area A2 is 5-70%, and the outer haze of the second area A2 is 0-70%, but is not limited thereto.

[0071] Please refer to Figure 4In this embodiment, the display device 100C includes a film layer group 150C. The film layer group 150C includes a first bonding layer 151C, a film 152, and a second bonding layer 153. The first bonding layer 151C is located between the lower polarizing plate 140 and the film 152, and the film 152 is located between the first bonding layer 151C and the second bonding layer 153. The film 152 is, for example, a haze film, but is not limited thereto.

[0072] In this embodiment, the second bonding layer 153 corresponds to the first area A1 and the width of the second bonding layer 153 along the first direction (for example, the Y direction) is smaller than the width of the first bonding layer 151C along the first direction, and the first direction is perpendicular to the normal direction of the display layer 130 (for example, the Z direction). Specifically, the second bonding layer 153 is applied on the film 152 by dispensing and aligned with the camera module 160, but not limited thereto. Here, the second bonding layer 153 is a pressure sensitive adhesive (PSA) without scattering particles, but not limited thereto.

[0073] In this embodiment, the first bonding layer 151C does not have scattering particles, and the diaphragm 152 has scattering particles, so that the internal haze of the first area A1 can be designed to be greater than 0 and less than or equal to 70%, but not limited thereto. Specifically, the diaphragm 152 is provided with convex scattering particles on the surface 1521 facing the camera module 160, and the portion of the diaphragm 152 not covered by the second bonding layer 153 corresponds to the second area A2, so that the external haze of the second area A2 is greater than 0. The portion of the diaphragm 152 covered by the second bonding layer 153 corresponds to the first area A1, and the side of the second bonding layer 153 facing the camera module 160 has a flat outer surface 1532, so that the external haze of the first area A1 is equal to 0.

[0074] Further, in the present embodiment, the second bonding layer 153 has two opposite oblique edges 1531, each oblique edge 1531 is inclined toward the center of the first area A1 and has an angle θ with the diaphragm 152. In one embodiment, the angle θ is between 5 degrees and 80 degrees, but is not limited thereto. In one embodiment, the angle θ is less than 60 degrees, but is not limited thereto. In addition, in the present embodiment, in the normal direction of the display layer 130 (for example, the Z direction), the second bonding layer 153 has a thickness W1. In one embodiment, the thickness W1 is less than 20 microns, but is not limited thereto. In one embodiment, the thickness is between 5 microns and 200 microns. The advantage of such a design is that it can have a better side viewing effect.

[0075] Please refer to Figure 5 In this embodiment, the display device 100D and Figure 4The display device 100C is slightly different from the display device 100C, and the main difference is that the film layer group 150D further includes a protective layer 154D, and the second bonding layer 153 is covered by the protective layer 154D and is located between the protective layer 154D and the film 152. The side of the protective layer 154D facing the camera module 160 has a flat outer surface 1541D. Here, the protective layer 154D is, for example, a scratch-resistant hardened film layer (Hard Coating, HC), but is not limited thereto.

[0076] In this embodiment, the film 152 has scattering particles, so that the internal haze of the first area A1 of the film layer group 150D is greater than 0 and less than or equal to 70%. When the camera module 160 is shooting, the image quality can be improved, and through the design of the film layer group 150D, when the display layer 130 emits light, the display device 100D can have good shooting quality.

[0077] Please refer to Figure 6 In this embodiment, the display device 100E and Figure 4 The display device 100C is slightly different from the display device 100C, and the main difference is that the first bonding layer 151E also has scattering particles. Here, the first bonding layer 151E is, for example, PSA with added scattering particles, but is not limited thereto.

[0078] In this embodiment, the first bonding layer 151E and the film 152 both have scattering particles, so that the internal haze of the first area A1 of the film layer group 150E is greater than 0 and less than or equal to 70%. When the camera module 160 is shooting, the image quality can be improved, and through the design of the film layer group 150E, when the display layer 130 emits light, the display device 100E can have good shooting quality.

[0079] In summary, in the display device of the present invention, the film layer group is located between the backlight module and the lower polarizer. The first area of ​​the film layer group has a flat outer surface facing the camera module, the outer haze of the first area is 0, the second area includes scattering particles, and the total haze of the second area is greater than 0. Since the camera module is arranged corresponding to the first area, the image quality can be improved when the camera module is shooting, and through the design of the film layer group, when the display layer of the display device emits light, the display device can have good shooting quality. In this way, the display device can take into account both LCD moire-free and UDC image discrimination accuracy.

[0080] Although the present invention has been disclosed as above by way of embodiments, they are not intended to limit the present invention. Any person skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the attached claims.

Claims

1. A display device, comprising: Display layer; A lower polarizing plate, located below the display layer; A film layer group, wherein the lower polarizing plate is located between the film layer group and the display layer, and the film layer group has a first area and a second area; A camera module, arranged corresponding to the first area; as well as The backlight module, the film layer group is located between the backlight module and the lower polarizing plate, wherein the outer haze of the first area is 0, and the total haze of the second area is greater than 0. 2 . The display device according to claim 1 , wherein the internal haze of the first area is 0 to 70%. 3 . The display device as claimed in claim 2 , wherein the film layer group comprises a first bonding layer and a protective layer, and the protective layer is located between the first bonding layer and the backlight module. The display device as claimed in claim 3 , wherein the first bonding layer has scattering particles. The display device of claim 3 , wherein a side of the protection layer facing the camera module has a flat outer surface. 6 . The display device according to claim 1 , wherein the inner haze of the second area is 5 to 70%, and the outer haze of the second area is 0 to 70%. The display device of claim 1 , wherein a total haze of the first region is smaller than a total haze of the second region.

8. The display device as claimed in claim 1, wherein the film layer group comprises a first bonding layer, a film and a second bonding layer, the first bonding layer is located between the lower polarizing plate and the film, and the film is located between the first bonding layer and the second bonding layer. 9 . The display device of claim 8 , wherein the second bonding layer corresponds to the first region and a width of the second bonding layer along a first direction is smaller than a width of the first bonding layer along the first direction, and the first direction is perpendicular to a normal direction of the display layer. 10 . The display device according to claim 8 , wherein the second bonding layer has two opposite oblique sides, each of the oblique sides is inclined toward the center of the first region and has an included angle with the film. The display device as claimed in claim 10 , wherein the angle is less than 60 degrees. 12 . The display device as claimed in claim 10 , wherein the angle is between 5 degrees and 80 degrees. 13 . The display device of claim 10 , wherein a side of the second bonding layer facing the camera module has a flat outer surface. 14 . The display device of claim 8 , wherein the second bonding layer has a thickness in a normal direction of the display layer, the thickness being less than 20 μm. 15 . The display device according to claim 8 , wherein in a normal direction of the display layer, the second bonding layer has a thickness ranging from 5 micrometers to 200 micrometers. 16 . The display device of claim 1 , wherein a width of the camera module along a first direction is smaller than a width of the first region along the first direction, the first direction being perpendicular to a normal direction of the display layer.

17. A display device, comprising: Display layer; A lower polarizing plate, located below the display layer; A film layer group, wherein the lower polarizing plate is located between the film layer group and the display layer, and the film layer group has a first area and a second area; A camera module, arranged corresponding to the first area; as well as The backlight module, the film layer group is located between the backlight module and the lower polarizing plate, wherein the first area has a flat outer surface on a side facing the camera module, and the second area includes scattering particles.

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