WO2018094800A1 - 一种显示面板及装置 - Google Patents
一种显示面板及装置 Download PDFInfo
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- WO2018094800A1 WO2018094800A1 PCT/CN2016/111642 CN2016111642W WO2018094800A1 WO 2018094800 A1 WO2018094800 A1 WO 2018094800A1 CN 2016111642 W CN2016111642 W CN 2016111642W WO 2018094800 A1 WO2018094800 A1 WO 2018094800A1
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- microstructure
- microstructures
- adjustment layer
- display panel
- light adjustment
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
Definitions
- the present invention relates to the field of display technologies, and in particular, to a display panel and device.
- the existing display panel is mainly a light-emitting realized by the active light-emitting principle of the display device, but when the sunlight is irradiated, the sunlight is reflected on the surface of the panel, thereby affecting the contrast of the display screen.
- display devices in outdoor display and indoor strong light source environments are particularly noticeable.
- the existing solution is to perform the anti-reflection treatment on the surface of the display device.
- the conventional display panel is provided with a multilayer film 102 on the surface of the cover glass 101.
- This method mainly uses the principle of interference of light between the layers to reduce the reflection of ambient light. And the subtractive effect of this mode depends on the optimal wavelength, and the optimal wavelength depends on the refractive index of the material and the film thickness of the material. Therefore, in order to improve the effect of the suppression, it is usually necessary to provide a multilayer film structure.
- the interference of light is sensitive to the optical path, the effect of the reflection at high angles is not ideal, resulting in poor contrast.
- the present invention provides a display panel comprising:
- the first light adjustment layer comprising at least two first microstructures for increasing a scattering rate of ambient light; the first micro The cross-sectional shape of the structure is semi-circular;
- the second light adjustment layer includes at least two second microstructures spaced apart from each other, the second microstructure for increasing ambient light transmission
- the second microstructure includes a top portion and a bottom portion, the first pitch being greater than the second pitch, wherein the first pitch is a pitch between tops of adjacent two second microstructures, and the second pitch is a phase The spacing between the bottoms of the two second microstructures.
- the first microstructure has a radius of 3 to 10 ⁇ m.
- the bottom surface of the second microstructure has a length ranging from 100 to 900 nm.
- the cross-sectional shape of the second microstructure is triangular or trapezoidal.
- the second microstructure has a thickness ranging from 100 to 1000 nm.
- a projected area of the second microstructure on the cover glass is smaller than a projected area of the first microstructure on the cover glass.
- first microstructures are spaced apart from each other, and the second microstructure is located on an upper surface of the first microstructure and not covered by the first microstructure On the glass cover.
- the present invention provides a display device including a display panel, the display panel comprising:
- the first light adjustment layer comprising at least two first microstructures for increasing a scattering rate of ambient light
- the second light adjustment layer includes at least two second microstructures spaced apart from each other, the second microstructure for increasing ambient light transmission rate.
- the cross-sectional shape of the first microstructure is semicircular.
- the first microstructure has a radius of 3 to 10 ⁇ m.
- the second microstructure includes a top portion and a bottom portion, the first pitch being greater than the second pitch, wherein the first pitch is a spacing between tops of adjacent two second microstructures, The second pitch is the spacing between the bottoms of two adjacent second microstructures.
- the bottom surface of the second microstructure has a length ranging from 100 to 900 nm.
- the cross-sectional shape of the second microstructure is triangular or trapezoidal.
- the second microstructure has a thickness ranging from 100 to 1000 nm.
- a projected area of the second microstructure on the cover glass is smaller than a projected area of the first microstructure on the cover glass.
- first microstructures are spaced apart from each other, and the second microstructure is located on an upper surface of the first microstructure and not covered by the first microstructure On the glass cover.
- the display panel and device of the present invention are provided with two light-regulating layers, one of which has a plurality of first microstructures for increasing the scattering rate of ambient light, and the other of which has a plurality of light-adjusting layers for increasing
- the second microstructure of the transmittance of ambient light reduces the reflection of ambient light by absorbing the transmitted ambient light through the first microstructure after increasing the transmittance of the ambient light by the second microstructure. And the effect of the subtraction is not limited by the optical path, which improves the contrast of the display.
- FIG. 1 is a cross-sectional view of a conventional display panel.
- FIG. 2 is a cross-sectional view of a display panel in accordance with an embodiment of the present invention.
- FIG. 3 is an enlarged schematic view of the second microstructure of FIG. 2.
- FIG. 2 is a cross-sectional view of a display panel according to an embodiment of the present invention.
- the display panel 10 of the present invention includes a cover glass 11, a first light adjustment layer 12, and a second light adjustment layer 13.
- the first light adjustment layer 12 is located on the cover glass 11, and the first light adjustment layer 12 includes two first microstructures 121 for increasing the scattering rate of ambient light.
- the cross-sectional shape of the first microstructure 121 is curved, preferably semi-circular. Since the curved structure is more conducive to the scattering of ambient light, the reflection of ambient light can be better reduced.
- the radius of the first microstructure 121 may be 3-10 microns.
- the material of the first microstructure 121 is glass.
- the preparation method of the first microstructure 121 can be prepared by a conventional microelectronic etching process, and is of course not limited to the method.
- the second light adjustment layer 13 is disposed on the first light adjustment layer 12, and the second light adjustment layer 13 includes two second microstructures 131.
- the two adjacent microstructures 131 are spaced apart from each other.
- the second microstructures 131 are used to increase the transmittance of ambient light.
- the second microstructures 131 may be located on an upper surface of the first microstructures 121 and a glass not covered by the first microstructures 121 On the cover plate 11.
- the second microstructure 131 may include a top portion 22 and a bottom portion 21, wherein a spacing L1 between the top portions 22 of two adjacent second microstructures 131 is referred to as a first spacing, and adjacent two The spacing L0 between the bottoms 21 of the two microstructures 131 is referred to as the second spacing, preferably the first spacing L1 is greater than the second spacing L0. That is, the cross-sectional shape of the second microstructure 131 is a narrow top and a wide bottom shape, so that ambient light can be better entered into the cover glass without reflection. The cross-sectional shape of the second microstructure 131 is a triangle or a trapezoid or the like.
- the second microstructure 131 has a bottom surface and a top surface adjacent to the first microstructure 121 (such as a surface adjacent to the first microstructure), the top surface being away from the first microstructure 121.
- the length or width of the bottom surface of the second microstructure 131 may range from 100 to 900 nanometers. Since the length or width is too small, it is not conducive to the transmission of ambient light, and the length or width is too large, so that the transmittance of ambient light is weakened, resulting in poor anti-reflection effect.
- the second microstructure 131 may have a thickness ranging from 100 to 1000 nanometers. Since the thickness is too large, it is easy to increase the size of the panel, and the thickness is too small, which is disadvantageous for improving the transmittance of ambient light.
- the projected area of the second microstructure 131 on the cover glass 11 is smaller than the projected area of the first microstructure 121 on the cover glass 11. That is, the size of the first microstructure 121 is larger than the size of the second microstructure 131, so that the reflection of ambient light can be better reduced.
- the second microstructure 131 can be prepared by an anodized porous aluminum template through a roll-to-roll nanoimprint process.
- the manufacturing method of the above display panel includes:
- the first light adjustment layer 12 is formed on the outer surface of the cover glass 11.
- a porous aluminum imprint template is prepared by anodizing electrolytic aluminum;
- the method for preparing a porous aluminum imprint template by the anodized electrolytic aluminum method comprises: constructing an electrochemical reaction platform, wherein the electrolyte is oxalic acid or sulfuric acid, aluminum and The carbon electrodes are respectively used as an anode and a cathode, and a direct current voltage is applied to form a porous structure on the surface of the aluminum electrode; after the aluminum electrode is placed in a phosphoric acid solution, the specific surface area at the porous structure is large, and phosphoric acid is passed through The oxidation increases the diameter of the porous structure and increases the depth; repeating the above electrochemical and phosphoric acid oxidation processes allows the diameter and depth of the porous aluminum to reach the desired nanoimprint template.
- the effective refractive index of the ambient light is equivalent to the refractive index and the air of the second microstructure.
- the second microstructure has a tapered topography, that is, as the ambient light propagates from the outer surface to the interior of the second microstructure, the effective volume ratio of the air gap to the second microstructure changes, that is, air
- the volume of the gap is reduced and the effective volume of the second microstructure is increased, and the effective refractive index of the second microstructure is also gradually increased, that is, the second microstructure can be described to some extent as the equivalent refractive index from the outside to the inside. Gradually increasing structure. As the refractive index increases, the effect of the reflected light of the ambient light on the surface of the cover glass is effectively reduced, and the effect of the anti-reflection is achieved.
- the display panel can also include more than two first microstructures and second microstructures.
- the display panel of the present invention is provided with two light-regulating layers, one of which has a plurality of first microstructures for increasing the scattering rate of ambient light, and the other of which has a plurality of light-increasing layers for increasing ambient light.
- the second microstructure of the transmittance Since the transmittance of the ambient light is increased by the second microstructure, the transmitted ambient light is scattered by the first microstructure, thereby reducing the reflection of the ambient light, and the effect of reducing the reflection is not limited by the optical path. This improves the contrast of the display.
- the size of the panel can be reduced, and the production cost can be reduced.
- the present invention also provides a display device, which may include a backlight module and a display panel.
- the display panel 10 of the present invention includes a cover glass 11, a first light adjustment layer 12, and a second light adjustment layer 13.
- the first light adjustment layer 12 is located on the cover glass 11, and the first light adjustment layer 12 includes two first microstructures 121 for increasing the scattering rate of ambient light.
- the cross-sectional shape of the first microstructure 121 is curved, preferably semi-circular. Since the curved structure is more conducive to the scattering of ambient light, the reflection of ambient light can be better reduced.
- the radius of the first microstructure 121 may be 3-10 microns.
- the material of the first microstructure 121 is glass.
- the preparation method of the first microstructure 121 can be prepared by a conventional microelectronic etching process, and is of course not limited to the method.
- the second light adjustment layer 13 is disposed on the first light adjustment layer 12, and the second light adjustment layer 13 includes two second microstructures 131.
- the two adjacent microstructures 131 are spaced apart from each other.
- the second microstructures 131 are used to increase the transmittance of ambient light.
- the second microstructures 131 may be located on an upper surface of the first microstructures 121 and a glass not covered by the first microstructures 121 On the cover plate 11.
- the second microstructure 131 may include a top portion 22 and a bottom portion 21, wherein a spacing L1 between the top portions 22 of two adjacent second microstructures 131 is referred to as a first spacing, and adjacent two The spacing L0 between the bottoms 21 of the two microstructures 131 is referred to as the second spacing, preferably the first spacing L1 is greater than the second spacing L0. That is, the cross-sectional shape of the second microstructure 131 is a narrow top and a wide bottom shape, so that ambient light can be better entered into the cover glass without reflection. The cross-sectional shape of the second microstructure 131 is a triangle or a trapezoid or the like.
- the length or width of the bottom surface of the second microstructure 131 may range from 100 to 900 nanometers. Since the length or width is too small, it is not conducive to the transmission of ambient light, and the length or width is too large, so that the transmittance of ambient light is weakened, resulting in poor anti-reflection effect.
- the second microstructure 131 may have a thickness ranging from 100 to 1000 nanometers. Since the thickness is too large, it is easy to increase the size of the panel, and the thickness is too small, which is disadvantageous for improving the transmittance of ambient light.
- the projected area of the second microstructure 131 on the cover glass 11 is smaller than the projected area of the first microstructure 121 on the cover glass 11. That is, the size of the first microstructure 121 is larger than the size of the second microstructure 131, so that the reflection of ambient light can be better reduced.
- the second microstructure 131 can be prepared by an anodized porous aluminum template through a roll-to-roll nanoimprint process.
- the manufacturing method of the above display panel includes:
- the first light adjustment layer 12 is formed on the outer surface of the cover glass 11.
- a porous aluminum imprint template is prepared by anodizing electrolytic aluminum;
- the method for preparing a porous aluminum imprint template by the anodized electrolytic aluminum method comprises: constructing an electrochemical reaction platform, wherein the electrolyte is oxalic acid or sulfuric acid, aluminum and The carbon electrodes are respectively used as an anode and a cathode, and a direct current voltage is applied to form a porous structure on the surface of the aluminum electrode; after the aluminum electrode is placed in a phosphoric acid solution, the specific surface area at the porous structure is large, and phosphoric acid is passed through The oxidation increases the diameter of the porous structure and increases the depth; repeating the above electrochemical and phosphoric acid oxidation processes allows the diameter and depth of the porous aluminum to reach the desired nanoimprint template.
- the effective refractive index of the ambient light is equivalent to the refractive index and the air of the second microstructure.
- the second microstructure has a tapered topography, that is, as the ambient light propagates from the outer surface to the interior of the second microstructure, the effective volume ratio of the air gap to the second microstructure changes, that is, air
- the volume of the gap is reduced and the effective volume of the second microstructure is increased, and the effective refractive index of the second microstructure is also gradually increased, that is, the second microstructure can be described to some extent as the equivalent refractive index from the outside to the inside. Gradually increasing structure. As the refractive index increases, the effect of the reflected light of the ambient light on the surface of the cover glass is effectively reduced, and the effect of the anti-reflection is achieved.
- the display panel can also include more than two first microstructures and second microstructures.
- the display device of the present invention is provided with two light-regulating layers, one of which has a plurality of first microstructures for increasing the scattering rate of ambient light, and the other of which has a plurality of light-increasing layers for increasing ambient light.
- the second microstructure of the transmittance Since the transmittance of the ambient light is increased by the second microstructure, the transmitted ambient light is scattered by the first microstructure, thereby reducing the reflection of the ambient light, and the effect of reducing the reflection is not limited by the optical path. This improves the contrast of the display.
- the size of the panel can be reduced, and the production cost can be reduced.
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Abstract
一种显示面板及装置，显示面板(10)包括盖板玻璃(11)；第一光调节层(12)，位于盖板玻璃(11)上，第一光调节层(12)包括至少两个第一微结构(121)，第一微结构(121)用于提高环境光的散射率；第二光调节层(13)，位于第一光调节层(12)上，第二光调节层(13)包括至少两个相互间隔的第二微结构(131)，第二微结构(131)用于增大环境光的透过率。
Description
本发明涉及显示器技术领域，特别是涉及一种显示面板及装置。
现有的显示面板主要是通过显示装置的主动发光原理实现的发光，但是当太阳光照射时，由于太阳光在面板表面会产生反射，从而影响显示画面的对比度。特别是户外显示和室内强光源环境中的显示设备尤为明显。
现有的解决方法是在显示设备的表面进行减反处理，如图1所示，现有的显示面板在盖板玻璃101的表面设置多层膜102。该方式主要是利用膜层之间光的干涉原理减少环境光的反射的。且该方式的减反效果取决于最优波长，而最优波长依赖于材料的折射率与材料膜厚。因此为了提高减反效果，通常需要设置多层膜结构。此外由于光的干涉对于光程比较敏感，因此在高角度的反射情况下减反效果不够理想，导致对比度较差。
因此，有必要提供一种显示面板及装置，以解决现有技术所存在的问题。
本发明的目的在于提供一种显示面板及装置，以解决现有的显示面板的对比度较差的技术问题。
为解决上述技术问题，本发明提供了一种显示面板，其包括：
盖板玻璃；
第一光调节层，位于所述盖板玻璃上，所述第一光调节层包括至少两个第一微结构，所述第一微结构用于提高环境光的散射率；所述第一微结构的截面形状为半圆形；
第二光调节层，位于所述第一光调节层上，所述第二光调节层包括至少两个相互间隔的第二微结构，所述第二微结构用于增大环境光的透过率；所述第二微结构包括顶部和底部，第一间距大于第二间距，其中所述第一间距为相邻两个第二微结构的顶部之间的间距，所述第二间距为相邻两个第二微结构的底部之间的间距。
在本发明的显示面板中，所述第一微结构的半径为3-10微米。
在本发明的显示面板中，所述第二微结构的底面的长度范围为或者宽度范围为100-900纳米。
在本发明的显示面板中，所述第二微结构的截面形状为三角形或者梯形。
在本发明的显示面板中，所述第二微结构的厚度范围为100-1000纳米。
在本发明的显示面板中，所述第二微结构在所述盖板玻璃上的投影面积小于所述第一微结构在所述盖板玻璃上的投影面积。
在本发明的显示面板中，相邻两个所述第一微结构之间间隔设置，所述第二微结构位于所述第一微结构的上表面以及未被所述第一微结构覆盖的玻璃盖板上。
本发明提供了一种显示装置，其包括显示面板，所述显示面板包括：
盖板玻璃；
第一光调节层，位于所述盖板玻璃上，所述第一光调节层包括至少两个第一微结构，所述第一微结构用于提高环境光的散射率；
第二光调节层，位于所述第一光调节层上，所述第二光调节层包括至少两个相互间隔的第二微结构，所述第二微结构用于增大环境光的透过率。
在本发明的显示装置中，所述第一微结构的截面形状为半圆形。
在本发明的显示装置中，所述第一微结构的半径为3-10微米。
在本发明的显示装置中，所述第二微结构包括顶部和底部，第一间距大于第二间距，其中所述第一间距为相邻两个第二微结构的顶部之间的间距，所述第二间距为相邻两个第二微结构的底部之间的间距。
在本发明的显示装置中，所述第二微结构的底面的长度范围为或者宽度范围为100-900纳米。
在本发明的显示装置中，所述第二微结构的截面形状为三角形或者梯形。
在本发明的显示装置中，所述第二微结构的厚度范围为100-1000纳米。
在本发明的显示装置中，所述第二微结构在所述盖板玻璃上的投影面积小于所述第一微结构在所述盖板玻璃上的投影面积。
在本发明的显示装置中，相邻两个所述第一微结构之间间隔设置，所述第二微结构位于所述第一微结构的上表面以及未被所述第一微结构覆盖的玻璃盖板上。
本发明的显示面板及装置，通过设置两层光调节层，其中一个光调节层具有多个用于提高环境光的散射率的第一微结构，另一个光调节层具有多个用于增大环境光的透过率的第二微结构，由于通过第二微结构增大环境光的透过率之后再通过第一微结构将透过的环境光进行散射，从而减少环境光的反射。且减反效果不会受到光程的限制，进而提高了显示的对比度。
图1为现有显示面板的剖面图。
图2为本发明实施例显示面板的剖面图。
图3为图2中第二微结构的放大示意图。
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是以相同标号表示。
请参照图2，图2为本发明实施例显示面板的剖面图。
如图2所示，本发明的显示面板10包括盖板玻璃11、第一光调节层12以及第二光调节层13。该第一光调节层12位于所述盖板玻璃11上，所述第一光调节层12包括两个第一微结构121，所述第一微结构121用于提高环境光的散射率。
所述第一微结构121的截面形状为弧形，优选为半圆形。由于弧形结构更利于环境光的散射，因此能够更好地降低环境光的反射。
当第一微结构121的截面形状为半圆形时，所述第一微结构121的半径可以为3-10微米。所述第一微结构121的材料为玻璃。当第一微结构121的半径位于此范围内时，更加有利于环境光的散射，同时可以避免显示画面出现模糊。第一微结构121的制备方法可采用传统的微电子刻蚀工艺制备，当然也不限于该方法。
所述第二光调节层13位于所述第一光调节层12上，所述第二光调节层13包括两个第二微结构131，相邻两个微结构131之间间隔设置，所述第二微结构131用于增大环境光的透过率。当相邻两个所述第一微结构121之间间隔设置时，所述第二微结构131可以位于所述第一微结构121的上表面以及未被所述第一微结构121覆盖的玻璃盖板11上。
结合图3，所述第二微结构131可以包括顶部22和底部21，其中将相邻两个第二微结构131的顶部22之间的间距L1称为第一间距，将相邻两个第二微结构131的底部21之间的间距L0称为所述第二间距，优选地第一间距L1大于第二间距
L0。也即第二微结构131的截面形状为顶部窄，底部宽的形状，从而能够使得环境光更好地进入盖板玻璃，而不会产生反射。所述第二微结构131的截面形状为三角形或者梯形等等形状。
可以理解的，该第二微结构131具有底面和顶面，该底面靠近第一微结构121（比如与第一微结构相邻的面），该顶面远离第一微结构121。所述第二微结构131的底面的长度或者宽度范围可以为100-900纳米。由于长度或者宽度太小，不利于环境光透过，而于长度或者宽度太大，使得环境光的透过率变弱，导致减反效果差。
所述第二微结构131的厚度范围可以为100-1000纳米。由于厚度太大，容易增大面板的尺寸，厚度太小，不利于改善环境光的透过率。
所述第二微结构131在所述盖板玻璃11上的投影面积小于所述第一微结构121在所述盖板玻璃11上的投影面积。也即第一微结构121的尺寸大于第二微结构131的尺寸，从而能够更好地减少环境光的反射。该第二微结构131可以通过阳极氧化多孔铝模板经过卷对卷的纳米压印工艺制备而成的。
上述显示面板的制作方法包括：
S101、在盖板玻璃11的外表面表面上制作第一光调节层12。
S102、对第一光调节层12进行刻蚀，形成多个第一微结构121。
S103、在第一微结构121的表面淀积一定厚度的第二光调节层13。
S104、在第二光调节层13的表面涂覆光刻胶。
S105、在所述光刻胶表面采用多孔铝压印模板制备光刻胶掩膜。
比如，通过阳极氧化电解铝的方式制备多孔铝压印模板；所述阳极氧化电解铝方式制备多孔铝压印模板的方法包括：搭建电化学反应平台，其中电解液采用草酸或者硫酸等，铝与碳电极分别用作阳极和阴极，通过施加直流电压，以使所述铝电极表面形成多孔结构；之后再将所述铝电极放入磷酸溶液中，由于多孔结构处的比表面积较大，通过磷酸的氧化作用使得多孔结构直径变大，深度增加；重复上述电化学与磷酸氧化流程可以使得多孔铝的直径与深度达到所需纳米压印模板的需求。
S106、采用光刻胶掩膜刻蚀所述第二光调节层13形成第二微结构。
由于光线进入第二光调节层之后，由于第二光调节层包括第二微结构与间隙结构（也即空气隙），因而环境光的有效折射率等效于第二微结构的折射率和空气折射率的差值。由于第二微结构具有锥形形貌，也即随着环境光从外表面向第二微结构内部传播的过程中，由于空气隙与第二微结构两者的有效体积比发生变化，也即空气隙的体积减小而第二微结构的有效体积增加，第二微结构的有效折射率也随之逐渐增加，也即第二微结构在一定程度上可以描述为等效折射率从外到内逐渐增加的结构。随着折射率的增大，有效减少了盖板玻璃表面的环境光的反射光效应，达到了减反的效果。
可以理解的，该显示面板也可以包括两个以上的第一微结构和第二微结构。
本发明的显示面板，通过设置两层光调节层，其中一个光调节层具有多个用于提高环境光的散射率的第一微结构，另一个光调节层具有多个用于增大环境光的透过率的第二微结构。由于通过第二微结构增大环境光的透过率之后，再通过第一微结构将透过的环境光进行散射，从而减少环境光的反射，且减反效果不会受到光程的限制，进而提高了显示的对比度。此外由于仅仅设置两层光调节层，还可以减小面板的尺寸，以及降低生产成本。
本发明还提供一种显示装置，其可以包括背光模块以及显示面板，如图2所示，本发明的显示面板10包括盖板玻璃11、第一光调节层12以及第二光调节层13。该第一光调节层12位于所述盖板玻璃11上，所述第一光调节层12包括两个第一微结构121，所述第一微结构121用于提高环境光的散射率。
所述第一微结构121的截面形状为弧形，优选为半圆形。由于弧形结构更利于环境光的散射，因此能够更好地降低环境光的反射。
当第一微结构121的截面形状为半圆形时，所述第一微结构121的半径可以为3-10微米。所述第一微结构121的材料为玻璃。当第一微结构121的半径位于此范围内时，更加有利于环境光的散射，同时可以避免显示画面出现模糊。第一微结构121的制备方法可采用传统的微电子刻蚀工艺制备，当然也不限于该方法。
所述第二光调节层13位于所述第一光调节层12上，所述第二光调节层13包括两个第二微结构131，相邻两个微结构131之间间隔设置，所述第二微结构131用于增大环境光的透过率。当相邻两个所述第一微结构121之间间隔设置时，所述第二微结构131可以位于所述第一微结构121的上表面以及未被所述第一微结构121覆盖的玻璃盖板11上。
结合图3，所述第二微结构131可以包括顶部22和底部21，其中将相邻两个第二微结构131的顶部22之间的间距L1称为第一间距，将相邻两个第二微结构131的底部21之间的间距L0称为所述第二间距，优选地第一间距L1大于第二间距
L0。也即第二微结构131的截面形状为顶部窄，底部宽的形状，从而能够使得环境光更好地进入盖板玻璃，而不会产生反射。所述第二微结构131的截面形状为三角形或者梯形等等形状。
所述第二微结构131的底面的长度或者宽度范围可以为100-900纳米。由于长度或者宽度太小，不利于环境光透过，而于长度或者宽度太大，使得环境光的透过率变弱，导致减反效果差。
所述第二微结构131的厚度范围可以为100-1000纳米。由于厚度太大，容易增大面板的尺寸，厚度太小，不利于改善环境光的透过率。
所述第二微结构131在所述盖板玻璃11上的投影面积小于所述第一微结构121在所述盖板玻璃11上的投影面积。也即第一微结构121的尺寸大于第二微结构131的尺寸，从而能够更好地减少环境光的反射。该第二微结构131可以通过阳极氧化多孔铝模板经过卷对卷的纳米压印工艺制备而成的。
上述显示面板的制作方法包括：
S101、在盖板玻璃11的外表面表面上制作第一光调节层12。
S102、对第一光调节层12进行刻蚀，形成多个第一微结构121。
S103、在第一微结构121的表面淀积一定厚度的第二光调节层13。
S104、在第二光调节层13的表面涂覆光刻胶。
S105、在所述光刻胶表面采用多孔铝压印模板制备光刻胶掩膜。
比如，通过阳极氧化电解铝的方式制备多孔铝压印模板；所述阳极氧化电解铝方式制备多孔铝压印模板的方法包括：搭建电化学反应平台，其中电解液采用草酸或者硫酸等，铝与碳电极分别用作阳极和阴极，通过施加直流电压，以使所述铝电极表面形成多孔结构；之后再将所述铝电极放入磷酸溶液中，由于多孔结构处的比表面积较大，通过磷酸的氧化作用使得多孔结构直径变大，深度增加；重复上述电化学与磷酸氧化流程可以使得多孔铝的直径与深度达到所需纳米压印模板的需求。
S106、采用光刻胶掩膜刻蚀所述第二光调节层13形成第二微结构。
由于光线进入第二光调节层之后，由于第二光调节层包括第二微结构与间隙结构（也即空气隙），因而环境光的有效折射率等效于第二微结构的折射率和空气折射率的差值。由于第二微结构具有锥形形貌，也即随着环境光从外表面向第二微结构内部传播的过程中，由于空气隙与第二微结构两者的有效体积比发生变化，也即空气隙的体积减小而第二微结构的有效体积增加，第二微结构的有效折射率也随之逐渐增加，也即第二微结构在一定程度上可以描述为等效折射率从外到内逐渐增加的结构。随着折射率的增大，有效减少了盖板玻璃表面的环境光的反射光效应，达到了减反的效果。
可以理解的，该显示面板也可以包括两个以上的第一微结构和第二微结构。
本发明的显示装置，通过设置两层光调节层，其中一个光调节层具有多个用于提高环境光的散射率的第一微结构，另一个光调节层具有多个用于增大环境光的透过率的第二微结构。由于通过第二微结构增大环境光的透过率之后，再通过第一微结构将透过的环境光进行散射，从而减少环境光的反射，且减反效果不会受到光程的限制，进而提高了显示的对比度。此外由于仅仅设置两层光调节层，还可以减小面板的尺寸，以及降低生产成本。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
Claims (16)
- 一种显示面板，其包括：盖板玻璃；第一光调节层，位于所述盖板玻璃上，所述第一光调节层包括至少两个第一微结构，所述第一微结构用于提高环境光的散射率；所述第一微结构的截面形状为半圆形；第二光调节层，位于所述第一光调节层上，所述第二光调节层包括至少两个相互间隔的第二微结构，所述第二微结构用于增大环境光的透过率；所述第二微结构包括顶部和底部，第一间距大于第二间距，其中所述第一间距为相邻两个第二微结构的顶部之间的间距，所述第二间距为相邻两个第二微结构的底部之间的间距。
- 根据权利要求1所述的显示面板，其中所述第一微结构的半径为3-10微米。
- 根据权利要求1所述的显示面板，其中所述第二微结构的底面的长度范围为或者宽度范围为100-900纳米。
- 根据权利要求1所述的显示面板，其中所述第二微结构的截面形状为三角形或者梯形。
- 根据权利要求1所述的显示面板，其中所述第二微结构的厚度范围为100-1000纳米。
- 根据权利要求1所述的显示面板，其中所述第二微结构在所述盖板玻璃上的投影面积小于所述第一微结构在所述盖板玻璃上的投影面积。
- 根据权利要求1所述的显示面板，其中相邻两个所述第一微结构之间间隔设置，所述第二微结构位于所述第一微结构的上表面以及未被所述第一微结构覆盖的玻璃盖板上。
- 一种显示装置，其包括显示面板，所述显示面板包括：盖板玻璃；第一光调节层，位于所述盖板玻璃上，所述第一光调节层包括至少两个第一微结构，所述第一微结构用于提高环境光的散射率；第二光调节层，位于所述第一光调节层上，所述第二光调节层包括至少两个相互间隔的第二微结构，所述第二微结构用于增大环境光的透过率。
- 根据权利要求8所述的显示装置，其中所述第一微结构的截面形状为半圆形。
- 根据权利要求9所述的显示装置，其中所述第一微结构的半径为3-10微米。
- 根据权利要求8所述的显示装置，其中所述第二微结构包括顶部和底部，第一间距大于第二间距，其中所述第一间距为相邻两个第二微结构的顶部之间的间距，所述第二间距为相邻两个第二微结构的底部之间的间距。
- 根据权利要求11所述的显示装置，其中所述第二微结构的底面的长度范围为或者宽度范围为100-900纳米。
- 根据权利要求8所述的显示装置，其中所述第二微结构的截面形状为三角形或者梯形。
- 根据权利要求8所述的显示装置，其中所述第二微结构的厚度范围为100-1000纳米。
- 根据权利要求8所述的显示装置，其中所述第二微结构在所述盖板玻璃上的投影面积小于所述第一微结构在所述盖板玻璃上的投影面积。
- 根据权利要求8所述的显示装置，其中相邻两个所述第一微结构之间间隔设置，所述第二微结构位于所述第一微结构的上表面以及未被所述第一微结构覆盖的玻璃盖板上。
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