TW201905499A - Anti-glare and anti-reflection components - Google Patents

Abstract

An anti-glare and anti-reflection device including a base and an anti-reflection film is provided. The base includes micro protrusions. The micro protrusions are connected with each other to form a rough surface. The rough surface has a first point and a second point, wherein a distance between the first point and a display surface is longest, and a distance between the second point and the display surface is shortest. A distance between the first point and the second point in a normal direction of the display surface is HD, and 1 [mu]m ≤ HD ≤ 20 [mu]m. A normal projection of each of the micro protrusions on the display surface has a first axis length R1 and a second axis length R2, 1 [mu]m ≤ R1 ≤ 20 [mu]m, and 1 [mu]m ≤ R2 ≤ 20 [mu]m. The anti-reflection film is disposed on the rough surface. The anti-reflection film has a thickness T in a normal direction of the rough surface, and T/HD ≤ 0.1.

Description

Anti-glare and anti-reflection elements

The invention relates to an optical element, and more particularly to an anti-glare and anti-reflection element.

The display panel has the advantages of small size, low radiation, power saving, and the like, so it has been widely used in daily life. With the popularity of display panels and the explosion of information, modern people use display panels to read information more often than to read traditional paper. However, compared with traditional paper, the display panel is more likely to reflect ambient light, and the reflected ambient light is likely to cause discomfort to the user and prevent reading for a long time.

In order to reduce the discomfort caused to the user by the reflection of ambient light, an anti-glare film is often provided on the display surface of the current display panel. In general, in order to avoid conditions such as blur, white fog, and sparkle, the display surface of the display panel is generally not provided with a high-haze anti-glare film. Even if an anti-reflection film is provided on an anti-glare film having a haze in order to improve conditions such as white fog, this either reduces the anti-glare effect of the anti-glare film, or the anti-reflection effect of the anti-reflection film is not as expected and / or color is generated Partial phenomenon.

The invention provides an anti-glare and anti-reflection element, which has excellent anti-glare and anti-reflection effects.

The anti-glare and anti-reflection element of the present invention includes a substrate and an anti-reflection film. The substrate includes a plurality of microprotrusions. A plurality of micro-protrusions are connected to form a rough surface. The rough surface has a first point furthest from the display surface and a second point closest to the display surface. The distance between the first point and the second point in the normal direction of the display surface is HD, and 1 μm ≦ HD ≦ 20 μm. The vertical projection of each micro-bump on the display surface has a first axial length and a second axial length, 1 μm ≦ R1 ≦ 20 μm, and 1 μm ≦ R2 ≦ 20 μm. The antireflection film is arranged on a rough surface. The antireflection film has a thickness T in the normal direction of the rough surface, and T / HD ≦ 0.1.

Based on the above, in an embodiment of the present invention, the thickness of the anti-reflection film is much smaller than the depth of the depression of the rough surface, so the anti-reflection film can be conformally disposed on the rough surface. Therefore, the anti-reflection film disposed on the rough surface of the substrate is difficult to affect the diffusion effect of the multiple micro-protrusions on the rough surface, and the anti-glare and anti-reflection element has both good anti-glare and anti-reflection effects.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of an anti-glare and anti-reflection element according to an embodiment of the present invention. Referring to FIG. 1, the display panel 10 has a display surface 10 a facing a user. The display surface 10a is located in an area capable of displaying pictures on the display panel 10, which is an active area (AA) commonly known in the art. The anti-glare and anti-reflection element 100 is configured on the display surface 10 a to diffuse the ambient light and reduce the amount of the ambient light being reflected, thereby improving the comfort of the user viewing the display panel 10. In terms of the type of display medium, in this embodiment, the display panel 10 may be a liquid crystal display (LCD); however, the present invention is not limited thereto. In other embodiments, the display panel 10 may also be organic. Organic light emitting diode (OLED), micro-LED display or other appropriate type of display. In terms of flexibility, in this embodiment, the display panel 10 may be a rigid display; however, the present invention is not limited thereto. In other embodiments, the display panel 10 may also be a flexible display. .

FIG. 2 is a schematic perspective view of a micro-protrusion of an anti-glare and anti-reflection element according to an embodiment of the present invention. For the sake of clear description, FIG. 1 and FIG. 2 schematically illustrate xyz rectangular coordinates, in which the directions x, y, and z are perpendicular to each other. Referring to FIG. 1, the anti-glare and anti-reflection element 100 includes a substrate 110 disposed on the display surface 10 a and an anti-reflection film 120 disposed on the substrate 110. Referring to FIGS. 1 and 2, the substrate 110 includes a plurality of micro-protrusions 112. A plurality of micro-protrusions 112 are connected to form a rough surface 114. The plurality of micro-protrusions 112 (or rough surfaces 114) include a plurality of sub-surfaces 112 a. For example, in this embodiment, each sub-surface 112a can be regarded as a tangent plane passing through a point on the micro-protrusion 112, and the surface of each micro-protrusion 112 can be composed of multiple tangent planes with different slopes. The normal direction N of each sub-surface 112a is at an angle θ with the normal direction z of the display surface 10a. In this embodiment, the plurality of normal directions N of the plurality of sub-surfaces 112 a of the plurality of micro-protrusions 112 and the normal direction z of the display surface 10 a include a plurality of angles θ. Furthermore, in this embodiment, the multiple shapes of the plurality of micro-protrusions 112 may be different, and / or the degree of inclination of the plurality of sub-surfaces 112 a of each micro-protrusion 112 may also be different, but the present invention is not limited to This is limited. In addition, in this embodiment, the substrate 110 may have a high haze. For example, the haze of the substrate 110 may be greater than or equal to 70%, but the invention is not limited thereto.

S% is a ratio of a sum of a plurality of vertical projection areas of the plurality of sub-surfaces 112 a having respective angles θ to a vertical projection area of the entire rough surface 114. In this specification, vertical projection can be defined as follows: a parallel light transmission direction is perpendicular to the display surface 10a (that is, the parallel light transmission direction is the -z direction), and an entire member is illuminated with the parallel light, and the member is The projection formed on the display surface 10a is the vertical projection of the component. FIG. 3 shows the relationship between each angle θ of the rough surface and the ratio S% in the first and second embodiments of the present invention. The data of the first embodiment and the second embodiment shown in FIG. 3 are obtained by actually measuring two samples. Through data analysis, the relationship between the angle θ and S of the first and second embodiments can be expressed as follows: , Where e represents the index, 0.0009 ≦ A ≦ 0.001, -14 ≦ B ≦ -16.5, 6.25 ≦ C ≦ 11.7, and 16 ≦ D ≦ 31.5.

FIG. 4 is a partially enlarged schematic diagram of the rough surface curve of the first embodiment shown in FIG. 3. FIG. Referring to FIG. 4, in the rough surface 114 of the first embodiment, the sum of the vertical projection areas of the multiple sub-surfaces 112 a with the angle θ defined as θ is _θ ; for example, θ is 1 ± 0.5 degrees a plurality of vertical projection area of the surface 112a and the sub much as b ₁ ^o, θ is the vertical projection area of the plurality of 2 ± 0.5 degrees of the many sub-surface 112a and is b ₂ ^o ...). In the rough surface 114 of the first embodiment, a sum of a plurality of vertical projection areas of a plurality of sub-surfaces 112a having θ between 0 and 10 degrees is a1, and . The ratio of the sum a1 of the multiple vertical projection areas of the multiple sub-surfaces 112a between 0 degrees and 10 degrees to the vertical projection area a of the entire rough surface 114 is a1 / a, and . In the rough surface 114 of the first embodiment, a1 / a is, for example, 11.249%. In summary, in the rough surface 114 of the first embodiment (and / or the second embodiment) of FIG. 3, the sum of the plurality of vertical projection areas of the plurality of sub-surfaces 112 a with θ between 0 and 10 degrees is a1 , The vertical projection area of the entire rough surface 114 is a, and 7.19% ≦ a1 / a ≦ 12.34%.

Similarly, the sum of the multiple vertical projection areas of the multiple sub-surfaces 112a between θ and 10 degrees is a2, and the vertical projection area of the entire rough surface 114 is a, and 10.75% ≦ a2 / a ≦ 19.56%; θ The sum of the vertical projection areas of the multiple sub-surfaces 112a between 20 degrees and 30 degrees is a3, and the vertical projection area of the entire rough surface 114 is a, and 6.92% ≦ a3 / a ≦ 28.49%; θ is between 30 degrees The sum of the vertical projection areas of the multiple sub-surfaces 112a to 40 degrees is a4, the vertical projection area of the entire rough surface 114 is a, and 1.88% ≦ a4 / a ≦ 30.35%; θ is between 40 ° and 50 ° The sum of the multiple vertical projection areas of multiple sub-surfaces 112a is a5, and the vertical projection area of the entire rough surface 114 is a, and 0.227% ≦ a5 / a ≦ 24.61%; multiple sub-surfaces 112a between θ and 50 degrees The sum of the multiple vertical projection areas of a is a6, and the vertical projection area of the entire rough surface 114 is a, and 0.0118% ≦ a6 / a ≦ 15.53%; multiple vertical surfaces of the multiple sub-surfaces 112a between 60 ° and 70 ° The sum of the projected areas is a7. The vertical projected area of the entire rough surface 114 is a, and 0.0002% ≦ a7 / a ≦ 7.73%; multiple sub-surfaces θ between 70 degrees and 80 degrees 11 The sum of the multiple vertical projection areas of 2a is a8. The vertical projection area of the entire rough surface 114 is a, and 0% ≦ a8 / a ≦ 3.06%; the vertical projection area of the multiple sub-surfaces 112a between θ and 80 degrees. The sum of a is a9, the vertical projection area of the entire rough surface 114 is a, and 0% ≦ a9 / a ≦ 0.93%.

In this embodiment, the multiple sub-surfaces 112a of the rough surface 114 of the substrate 110 are inclined at a plurality of different angles θ, where 0 ^o ≦ θ ≦ 90 ^o . In particular, most of the sub-surfaces 112a are inclined at a large angle. For example, in this embodiment, the rough surface 114 includes a plurality of sub-surfaces 112a. A normal direction N of each sub-surface 112a and a normal direction z of the display surface 10a are at an angle θ. The sub-surfaces have angles θ. The sum of the multiple vertical projection areas of 112a is b _θ , and the vertical projection area of the rough surface 114 is a; as shown in FIG. 3 (where the abnormally high S% corresponding to the angle θ between 0 ^o ～ 1 ^o is due to Due to the measurement noise, the abnormally high S% corresponding to the angle θ between 0 ^o ～ 1 ^o is negligible), in the range where the angle θ is greater than or equal to 0 ^o and less than or equal to 90 ^o , b _θ / a (that is, S%) has a maximum value, and the angle θ corresponding to the maximum value is θ _max , and 5 ^o ≦ θ _max ≦ 35 ^o . Most normal direction of the surface 112a of the sub-N z to the normal direction of the display surface 10a of angle θ 10 ^o ~ 40 ^o fall within a range, preferably, the majority of the normal direction of the surface 112a of the sub-display surface of the N The included angle θ of the normal direction z of 10a falls within a range of 15 ^° to 35 ^° (that is, 15 ^° ≦ _θmax ≦ 35 ^° ), but the present invention is not limited thereto. From another perspective, the average value of θ is θ _avg , And 5 ^o ≦ θ _avg ≦ 35 ^o ; preferably, 15 ^o ≦ θ _avg ≦ 35 ^o , but the present invention is not limited thereto.

Referring to FIG. 1, the rough surface 114 of the substrate 110 has a first point 114a (ie, the highest point) furthest from the display surface 10a and a second point 114b (ie, the lowest point) closest to the display surface 10a, the first point 114a The distance from the second point 114b in the normal direction z of the display surface 10a is HD, and 1 μm ≦ HD ≦ 20 μm. Please refer to FIG. 1 and FIG. 2, the vertical projection of each micro-protrusion 112 on the display surface 10 a (eg, xy plane) has a first axial length R1 and a second axial length R2, 1 μm ≦ R1 ≦ 20 μm, 1 μm ≦ R2 ≦ 20 μm, where the first axial length R1 can refer to the length of the first axis (ie, the R1 mark) connected by the furthest two points on the edge of the vertical projection of the microprojection 112; the second The axis (that is, where R2 is marked) is perpendicular to the first axis (that is, where R1 is marked) and the normal direction z. The second axis (that is, where R2 is marked) is perpendicular to the edge of the vertical projection of the microprojection 112 at the first point. 1 and the second point 2, and the second axial length R2 may refer to the distance between the first point 1 and the second point 2 that are farthest apart. In this embodiment, the substrate 110 is a transparent material, such as glass, optical acrylic, etc., but the present invention is not limited thereto. In other embodiments, the substrate 110 may also be other suitable materials.

Referring to FIG. 1, the anti-reflection film 120 is disposed on the rough surface 114. The anti-reflection film 120 has a thickness T in a normal direction N of the rough surface 114. In this embodiment, the thickness T of the anti-reflection film 120 can be defined as follows: an angle θ between a normal direction N of a sub-surface 112 a and a normal direction z of the display surface 10 a is 5 ^° ≦ θ ≦ 10 ^° The thickness T refers to the thickness of a part of the anti-reflection film 120 on the one sub-surface 112a whose angle θ is between 5 ^° and 10 ^° in the normal direction z of the display surface 10a. It is worth noting that T / HD ≦ 0.1. In other words, the thickness T of the anti-reflection film 120 is much smaller than the depth D of the depression of the rough surface 114, and the anti-reflection film 120 is conformally laid on the rough surface 114. Thereby, the anti-reflection film 120 disposed on the plurality of micro-protrusions 112 of the substrate 110 does not easily affect the diffusion effect of the plurality of micro-protrusions 112, and the anti-glare and anti-reflection element 100 can both have good anti-glare and Anti-reflective effect. In this embodiment, a plurality of adjacent micro-protrusions 112 are connected to each other to define a depression 112b. The depression 112b has a lowest point P1 (that is, a point closest to the display surface 10a), and defines a depression 112b. The plurality of micro-bumps 112 each have a plurality of vertices, and the lowest one of the plurality of vertices (that is, the one closest to the display surface 10a) is P2. The distance is the depression depth D.

FIG. 5 is an enlarged schematic view of a part of the substrate 110 and a part of the anti-reflection film 120 of FIG. 1. Referring to FIG. 5, in this embodiment, the anti-reflection film 120 includes at least one dielectric layer that is phase-stacked and has a refractive index different from that of the substrate 110, for example, includes at least two dielectric layers 122 and 124 and at least one dielectric layer. The refractive index of the material of the layer 122 and / or 124 is different from the refractive index of the material of the substrate 110. Taking the anti-reflection film 120 including the two dielectric layers 122 and 124 as an example, the first portion L1 of the ambient light incident on the anti-reflection film 120 is directly reflected by the upper surface of the dielectric layer 124 and leaves the anti-reflection film 120. The second portion L2 of light is sequentially refracted by the upper surface of the dielectric layer 124 toward the dielectric layer 122, and is reflected by the interface of the dielectric layer 122 and the dielectric layer 124 toward the upper surface of the dielectric layer 124, and is again mediated by the dielectric. The upper surface of the electrical layer 124 is refracted and leaves the anti-reflection film 120. The third portion L3 of the ambient light is sequentially refracted by the upper surface of the dielectric layer 124 toward the dielectric layer 122, the interface between the dielectric layer 122 and the dielectric layer 124. The interface is refracted toward the substrate 110, reflected by the interface of the substrate 110 and the dielectric layer 122 toward the upper surface of the dielectric layer 122, and again refracted by the interface of the dielectric layer 122 and the dielectric layer 124 toward the dielectric layer 124. And is refracted again by the upper surface of the dielectric layer 124 and leaves the anti-reflection film 120. By appropriately designing the thickness of the dielectric layers 122 and 124 and their refractive indices, the first portion L1, the second portion L2, and the third portion L3 of the ambient light leaving the anti-reflection film 120 may cause destructive interference. Therefore, the amount of ambient light reflected by the anti-reflection film 120 is reduced, and the anti-reflection film 120 has an anti-reflection effect. It should be noted that FIG. 1 uses a layer of a dielectric layer 122 and a layer of a dielectric layer 124 stacked as an example, but the present invention is not limited thereto. The number of dielectric layers of the anti-reflection film 120 may depend on actual requirements. In other embodiments, the anti-reflection film 120 may also include a plurality of dielectric layers 122 and a plurality of dielectric layers 124 stacked alternately. In addition, in this embodiment, the thickness of the single dielectric layer 122 or the single dielectric layer 124 of the anti-reflection film 120 may be between several nm and hundreds of nm, and the total thickness of the anti-reflection film 120 may be between several tens of nm. Up to several hundred nm, but the invention is not limited to this.

FIG. 6 shows the reflection spectrum of the anti-reflection film of the first and second embodiments of the present invention and the reflection spectrum of the anti-reflection film of the comparative example. All reflection spectra in FIG. 6 are measured in the normal direction z of the display surface 10a. For example, the anti-reflection film of the comparative example includes a first first dielectric layer (for example, TiO _{2 having a} thickness of 13.92 nm) and a first second dielectric layer (for example, a thickness 35.08 nm SiO ₂ ), a second first dielectric layer (eg, TiO _{2 with a} thickness of 121.73 nm) and a second second dielectric layer (eg, SiO _{2 with a} thickness of 92.18 nm); the first The anti-reflection film of the embodiment includes a first first dielectric layer (eg, TiO _{2 having a} thickness of 13.65 nm) and a first second dielectric layer (eg, having a thickness of 35.75 nm) which are sequentially stacked along the z direction. SiO ₂ ), a second first dielectric layer (for example: TiO _{2 with a} thickness of 120.66 nm) and a second second dielectric layer (for example: SiO _{2 with a} thickness of 92.7 nm); The reflective film includes a first first dielectric layer (for example: TiO _{2 having a} thickness of 13.2 nm), a first second dielectric layer (for example: SiO _{2 having a} thickness of 35.15 nm), which are sequentially stacked along the z direction, A second first dielectric layer (for example: TiO _{2 with a} thickness of 116.16 nm) and a second second dielectric layer (for example: SiO with a thickness of 93.06 nm ₂ ). In short, the total thickness of the anti-reflection film of the first and second embodiments is greater than the total thickness of the anti-reflection film of the comparative example, and the first dielectric layer of the anti-reflection film of the first and second embodiments. The thickness of the first dielectric layer of the antireflection film of the comparative example is smaller than that of the first embodiment, and the thickness of the second dielectric layer of the antireflection film of the first and second embodiments is greater than that of the first dielectric layer of the antireflection film of the comparative example. The thickness of the electrical layer is not limited in the present invention.

Referring to FIG. 6, the anti-reflection film of the comparative example shows blue light (for example, light having a wavelength of 400 nm to 500 nm), green light (for example, light having a wavelength of 500 nm to 600 nm), and red in a normal direction z of the display surface 10 a. The reflectance of light (for example, light with a wavelength of 600nm to 700nm) is approximately the same. The anti-reflection film 120 of the first embodiment of the present invention has a reflectance of blue light (especially, light having a wavelength of 450 nm to 500 nm) in the normal direction z of the display surface 10a is significantly larger than that of green light and red light. rate. Furthermore, the reflectance of the anti-reflection film 120 according to the first embodiment of the present invention in the normal direction z of the display surface 10a to green light (especially, light having a wavelength of 500 nm to 600 nm) may be greater than or equal to The reflectance of red light (particularly, light having a wavelength of 600 to 650 nm). Similarly, the reflectance of the anti-reflection film 120 of the second embodiment of the present invention in the normal direction z of the display surface 10a to blue light (especially, light having a wavelength of 450 nm to 500 nm) is significantly greater than that to green light and red The reflectivity of light. The reflectance of the anti-reflection film 120 of the second embodiment of the present invention in the normal direction z of the display surface 10a to green light (especially, light having a wavelength of 500 nm to 600 nm) may be greater than or equal to red light (especially , Light with a wavelength of 600nm to 650nm).

FIG. 7 shows a light emission spectrum of a measurement light source (for example, a D65 light source). FIG. 8 illustrates human factor color matching functions x ′, y ′, and z ′. For example, in this embodiment, the reflectances Y _R , Y _G, and Y _B of the anti-reflection film 120 to the red light, green light, and blue light in the normal direction z of the display surface 10 a can be expressed by the following formulas. (1), (2) and (3) indicate: ---Formula 1); --- Formula (2); --- Formula (3); wherein the measurement light source is, for example, but not limited to, a D65 light source.

In addition, the antireflection films of the comparative example, the first embodiment, and the second embodiment of the antireflection film are disposed on the same rough surface 114 (for example, the angle θ of the multiple sub-surfaces 112a of the rough surface 114 is mostly 20 ^° to 30 ^o ), for the entire visible light wavelength range and the human eye, the reflectance of the anti-reflection film of the comparative example is 0.21%, the reflectance of the anti-reflection film of the first embodiment is 0.17%, and the second embodiment The reflectivity of the anti-reflection film is 0.14%. In other words, compared to the anti-reflection film of the comparative example, the anti-reflection film of the first embodiment can reduce the reflected light by 19%, and the anti-reflection film of the second embodiment can reduce the reflected light by 33.3%. The first and second embodiments The anti-reflection effect of the anti-reflection film is good.

It is worth noting that, in an embodiment of the present invention, if the reflection spectrum of the anti-reflection film 120 is measured when the optical axis of the spectrometer is parallel to the normal direction z of the display surface 10a, the spectrometer measures The reflection spectrum of the obtained anti-reflection film 120 in the normal direction z may be bluish; in other words, if an ambient light is incident along the -z direction to the sub-surface 112a substantially parallel to the display surface 10a, The reflection spectrum of a part of the anti-reflection film 120 in any direction may be bluish. The anti-reflection film 120 laid on the sub-surface 112a of the parallel display surface 10a is also laid on the tilted sub-surface 112a. At this time, if an ambient light enters the tilted sub-surface 112a along the -z direction, due to the ambient light The difference in the transmission path of the reflected light formed in the dielectric layers 122 and 124 in the anti-reflection film 120 is relatively short. Therefore, a part of the anti-reflection film 120 laid on the inclined sub-surface 112a can resist blue light, green light and red in any direction. The reflectivity of light can be approximately the same. In this embodiment, since most of the area of the anti-reflection film 120 is distributed on the inclined sub-surface 112a, as a whole, the reflectivity of the anti-reflection film 120 to blue, green, and red light in any direction It can be approximated, and it is difficult to detect the color deviation phenomenon of the anti-glare and anti-reflection element 100 with the naked eye.

In summary, an anti-glare and anti-reflection element according to an embodiment of the present invention includes a substrate and an anti-reflection film. The substrate includes a plurality of micro-protrusions, wherein the plurality of micro-protrusions are connected to form a rough surface. The antireflection film is conformally arranged on the rough surface. Therefore, the anti-reflection film disposed on the plurality of micro-protrusions of the substrate is difficult to affect the diffusion effect of the plurality of micro-protrusions, and the anti-glare and anti-reflection element has both good anti-glare and anti-reflection effects.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

1‧‧‧ first point

2‧‧‧ second point

10‧‧‧Display Panel

10a‧‧‧display surface

100‧‧‧Anti-glare and anti-reflection element

110‧‧‧ substrate

112‧‧‧Slightly raised

112a‧‧‧ Subsurface

112b‧‧‧ Depression

114‧‧‧ Rough

114a‧‧‧First point

114b‧‧‧point two

120‧‧‧Anti-reflective film

122, 124‧‧‧ Dielectric layer

D‧‧‧ Depth

HD‧‧‧ Distance

L1‧‧‧Part One of Ambient Light

L2‧‧‧ The second part of the ambient light

L3‧‧‧ The third part of the ambient light

P1‧‧‧ Low

P2‧‧‧ Vertex

R1‧‧‧first axial length

R2‧‧‧second axial length

T‧‧‧thickness

x, y, z, N‧‧‧ directions

θ‧‧‧ angle

FIG. 1 is a schematic cross-sectional view of an anti-glare and anti-reflection element according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of a micro-protrusion of an anti-glare and anti-reflection element according to an embodiment of the present invention. FIG. 3 shows the relationship between each angle θ of the rough surface and the ratio S% in the first and second embodiments of the present invention. FIG. 4 is a partially enlarged schematic diagram of the rough surface curve of the first embodiment shown in FIG. 3. FIG. FIG. 5 is an enlarged schematic view of a part of the substrate and a part of the antireflection film of FIG. 1. FIG. 6 shows the reflection spectrum of the anti-reflection film of the first and second embodiments of the present invention and the reflection spectrum of the anti-reflection film of the comparative example. FIG. 7 shows a light emission spectrum of a measurement light source (for example, a D65 light source). Fig. 8 shows human factor color matching functions x ', y', z '.

Claims (17)

An anti-glare and anti-reflection element is disposed on a display surface of a display panel. The anti-glare and anti-reflection element includes: a substrate including a plurality of micro-protrusions, wherein the micro-protrusions are connected to form a rough surface; Surface, the rough surface has a first point farthest from the display surface and a second point closest to the display surface, and the distance between the first point and the second point in a normal direction of the display surface It is HD, 1 μm ≦ HD ≦ 20 μm, and the vertical projection of each micro-protrusion on the display surface has a first axial length R1 and a second axial length R2, 1 μm ≦ R1 ≦ 20 μm, 1 μm ≦ R2 ≦ 20 μm; and an anti-reflection film disposed on the rough surface, wherein the anti-reflection film has a thickness T in a normal direction of the rough surface, and T / HD ≦ 0.1. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the sub-surfaces having the angle θ is b _θ , and the vertical projection area of the rough surface is a; in a range where the angle θ is greater than or equal to 0 ^o and less than or equal to 90 ^o , b _θ / a has a maximum value, and the angle θ corresponding to the maximum value is θ _max , and 5 ^o ≦ θ _max ≦ 35 ^o . The anti-glare and anti-reflection element according to item 2 of the scope of patent application, wherein 15 ^o ≦ θ _max ≦ 35 ^o . The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of a plurality of vertical projection areas of a plurality of subsurfaces with θ between 0 degrees and 10 degrees is a1, and the vertical projection area of the rough surface is a, and 7.19% ≦ a1 / a ≦ 12.34%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the multiple vertical projection areas of the multiple sub-surfaces θ between 10 degrees and 20 degrees is a2, the vertical projection area of the rough surface is a, and 10.75% ≦ a2 / a ≦ 19.56%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of a plurality of vertical projection areas of a plurality of subsurfaces with θ between 20 degrees and 30 degrees is a3, and the vertical projection area of the rough surface is a, and 6.92% ≦ a3 / a ≦ 28.49%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of a plurality of vertical projection areas of a plurality of subsurfaces having θ between 30 degrees and 40 degrees is a4, and the vertical projection area of the rough surface is a, and 1.88% ≦ a4 / a ≦ 30.35%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the multiple sub-surfaces with θ between 40 degrees and 50 degrees is a5, and the vertical projection area of the rough surface is a, and 0.227% ≦ a5 / a ≦ 24.61%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the multiple vertical projection areas of the multiple sub-surfaces θ between 50 degrees and 60 degrees is a6, and the vertical projection area of the rough surface is a, and 0.0118% ≦ a6 / a ≦ 15.53%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the multiple sub-surfaces with θ between 60 degrees and 70 degrees is a7, and the vertical projection area of the rough surface is a, and 0.0002% ≦ a7 / a ≦ 7.73%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the multiple sub-surfaces with θ between 70 degrees and 80 degrees is a8. The vertical projection area of the rough surface is a, and 0% ≦ a8 / a ≦ 3.06%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the multiple sub-surfaces θ between 80 degrees and 90 degrees is a9, and the vertical projection area of the rough surface is a, and 0% ≦ a9 / a ≦ 0.93%. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The ratio of the vertical projection area of at least one sub-surface with an angle θ to the vertical projection area of the rough surface is S%, and S satisfies the following formula: Where A is between 0.0009 and 0.001, B is between -14 and -16.5, C is between 6.25 and 11.7, and D is between 16 and 31.5. The anti-glare and anti-reflection element according to item 1 of the patent application scope, wherein the reflectivity of the anti-reflection film in the normal direction of the display surface to blue light is greater than the reflectance to green light and red light. The anti-glare and anti-reflection element according to item 14 of the scope of the patent application, wherein the reflectivity of the anti-reflection film to green light in the normal direction of the display surface is greater than or equal to the red light reflectance. The anti-glare and anti-reflection element according to item 1 of the scope of patent application, wherein the rough surface includes a plurality of sub-surfaces, and a normal direction of each of the sub-surfaces is at an angle θ with the normal direction of the display surface, The sum of the vertical projection areas of the sub-surfaces having the angle θ is b _θ , and the vertical projection area of the rough surface is a; in a range where the angle θ is greater than or equal to 0 ^o and less than or equal to 90 ^o , The average is θ _avg , , And 5 ^o ≦ θ _avg ≦ 35 ^o . The anti-glare and anti-reflection element according to item 16 of the scope of patent application, wherein 15 ^o ≦ θ _avg ≦ 35 ^o .