WO2013155838A1 - 柱透镜光栅及其制作方法 - Google Patents

柱透镜光栅及其制作方法 Download PDF

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Publication number
WO2013155838A1
WO2013155838A1 PCT/CN2012/084695 CN2012084695W WO2013155838A1 WO 2013155838 A1 WO2013155838 A1 WO 2013155838A1 CN 2012084695 W CN2012084695 W CN 2012084695W WO 2013155838 A1 WO2013155838 A1 WO 2013155838A1
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Prior art keywords
cylindrical lens
lens grating
transparent
pattern
grating
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PCT/CN2012/084695
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English (en)
French (fr)
Inventor
武延兵
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京东方科技集团股份有限公司
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Publication of WO2013155838A1 publication Critical patent/WO2013155838A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00Simple or compound lenses
    • G02B3/0006Arrays
    • G02B3/0012Arrays characterised by the manufacturing method

Definitions

  • Embodiments of the present invention relate to a cylindrical lens grating and a method of fabricating the same. Background technique
  • the three-dimensional (3D) display technology of the eye can be divided into parallax barrier display technology and cylindrical lens grating display technology.
  • the principle of the cylindrical lens grating technology is to add a layer of cylindrical lens grating in front of the display panel. A part of the sub-pixels on the display panel display the left eye image, and some display the right eye image, and the sub-pixels (left and right eye pixels) used for the left and right eye images.
  • the emitted light passes through the cylindrical lens grating, and the direction of propagation is deflected due to the refraction of the cylindrical lens grating, so that the light of the left eye pixel is incident on the left eye of the viewer, and the light of the right eye pixel is incident on the right eye of the viewer.
  • the cylindrical lens grating manufacturing method usually uses a very hard cutter, such as a diamond-inlaid cutter, to engrave the required cylindrical lens groove on the copper round roller, and then uses a resin material (for making The material of the cylindrical lens grating is prepared by copying a pattern from a copper round roll.
  • a very hard cutter such as a diamond-inlaid cutter
  • a resin material for making The material of the cylindrical lens grating is prepared by copying a pattern from a copper round roll.
  • the conventional cylindrical lens grating is expensive to manufacture, has a complicated manufacturing process, and is manufactured by a mechanical method, so that the precision of the produced cylindrical lens grating is low. Summary of the invention
  • An embodiment of the present invention provides a cylindrical lens grating and a method of fabricating the same, which facilitates the fabrication process of the cylindrical lens and improves the accuracy of the cylindrical lens grating.
  • One aspect of the present invention provides a method of fabricating a cylindrical lens grating, comprising: forming and pre-curing a transparent film material on a substrate to form at least one transparent film; and patterning a process on the at least one transparent film Forming a cylindrical lens grating pattern; curing the cylindrical lens grating pattern to form a cylindrical lens grating.
  • a cylindrical lens grating comprising: a substrate and a layered structure formed of at least two transparent films on the substrate.
  • the method for fabricating the cylindrical lens grating provided by the embodiment of the present invention can be carried out by using the device and the process for manufacturing the display panel, and does not need to be fabricated by a mechanical method, thereby reducing the manufacturing cost. It simplifies the manufacturing process and improves the accuracy of the cylindrical lens grating.
  • FIG. 1 is a schematic structural diagram of a cylindrical lens grating according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of another cylindrical lens grating according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for fabricating a cylindrical lens grating, which includes the following steps. S101. Forming and pre-curing a transparent film material on the substrate to form at least one transparent film having a certain height.
  • the transparent film material may be a transparent photoresist material, such as by deposition or coating.
  • the way is formed on the substrate.
  • This pre-curing treatment is, for example, a heat treatment.
  • the transparent photoresist has a positive photoresist and a negative photoresist.
  • the positive photoresist is characterized in that the exposed portion is washed away in the developing process; the negative photoresist is characterized as unexposed. Some will be washed away during the development process.
  • the patterning process may be a process of exposing and developing a layer of transparent film through which a cylindrical lens grating pattern is formed.
  • the transparent film is preferably a transparent photoresist, and the exposure process can be directly performed on the transparent photoresist without the need to apply a photoresist on the transparent film for the exposure process, thereby simplifying the manufacturing process.
  • the exposure process may be an exposure process of the transparent photoresist through the transparent mask
  • the transparent mask may be a gray scale mask or a semi-transparent mask.
  • the semi-transparent mask process is a semi-transparent mask process which performs selective exposure and development by different intensity of light transmitted through different regions, and has corresponding regions with different transmittances on the mask;
  • the gray-scale masking process performed by the film plate is carried out by selective exposure and development by the grating effect, so that the intensity of light transmitted through the film in different regions is different.
  • This curing treatment is, for example, a heat treatment.
  • steps S101 to S103 are performed by one step to form a cylindrical lens grating.
  • the cylindrical lens grating may be formed by using two, three, or three or more transparent films, and the above S101 to S103 are repeated twice, three times or more.
  • the pattern formed in one patterning process and the pattern formed after the previous patterning process are smoothly transitioned on the side surface.
  • the pattern formed in one patterning process and the pattern formed after the previous patterning process are smoothly transitioned on the side surface.
  • it is necessary to utilize a three-time patterning process when fabricating a three-layered column lens grating.
  • the pattern formed in the second patterning process and the pattern formed in the first patterning process smoothly transition on the side surface, and the pattern formed in the third patterning process and the pattern formed in the second patterning process are smoothed on the side surface The transition also ensures a smooth transition of the resulting cylindrical lens grating side surface.
  • the pattern formed in the last patterning process completely covers the pattern formed after all the patterning processes before the last patterning process.
  • the pattern formed in one patterning process completely covers the pattern formed in the previous patterning process, for example, in the production of a three-layer layered structure.
  • a three-time patterning process is required. The pattern formed in the second patterning process completely covers the pattern formed in the first patterning process, and the pattern formed in the third patterning process completely covers the pattern formed in the second patterning process.
  • the cylindrical lens grating is fabricated by using the device and the process for manufacturing the display panel, it is not required to be mechanically produced, thereby reducing the manufacturing cost, simplifying the manufacturing process, and improving the cylindrical lens grating. Precision.
  • an embodiment of the present invention provides a method for fabricating a cylindrical lens grating.
  • the transparent thin film material in the method for fabricating the cylindrical lens grating is a transparent photoresist material, and the cylindrical lens grating is formed by forming a three-layer hierarchical structure.
  • the embodiment of the present invention is not limited thereto, and the manufacturing step may include the following steps.
  • the exposure process may be an exposure process of the transparent photoresist through the light-transmissive mask, which is a gray-scale mask or a semi-transparent mask.
  • the semi-transparent mask process is a semi-transparent mask process which performs selective exposure and development by different intensity of light transmitted through different regions, and has corresponding regions with different transmittances on the mask;
  • the gray-scale masking process performed by the film plate is carried out by selective exposure and development by the grating effect, so that the intensity of the transmitted light of the mask plate in different regions is different.
  • the unretained portion of the transparent resist after exposure is washed away, thereby retaining the pattern formed by the transparent resist.
  • the total height of the three-layer transparent photoresist is the same as the preset height of the cylindrical lens grating.
  • the pattern formed is specifically to form the cylindrical lens grating A graphic of one of the layers in the hierarchy.
  • the manufacturing method of the cylindrical lens grating is fabricated by using the device and the process for manufacturing the display panel, it is not required to be mechanically produced, thereby reducing the manufacturing cost, simplifying the manufacturing process, and improving the cylindrical lens.
  • the accuracy of the grating is not required to be mechanically produced, thereby reducing the manufacturing cost, simplifying the manufacturing process, and improving the cylindrical lens.
  • the positional relationship between the layers in the layered structure of the cylindrical lens grating may have a certain error, that is, formation cannot be guaranteed.
  • the pattern smoothly transitions on the side surface, thereby affecting the accuracy of the cylindrical lens grating. Therefore, in the actual fabrication of the cylindrical lens grating in the embodiment of the present invention, it is preferable to completely cover the first two patterns by the pattern formed by the last patterning process.
  • the pattern formed in the process, further, the pattern formed by the second patterning process also completely covers the pattern in the first patterning process, and the formed cylindrical lens grating is as shown in FIG.
  • the method for fabricating the cylindrical lens grating provided by the above embodiment is described by taking a cylindrical lens grating having a three-layer hierarchical structure as an example, and the embodiment of the present invention is not limited thereto, and the specific hierarchical structure is The number of layers can be determined according to the preset height of the cylindrical lens grating and the height of each layer of transparent photoresist, thereby ensuring that the total height of the column lens grating layered structure is the same as the preset height.
  • the embodiment of the present invention further provides a method for fabricating another cylindrical lens grating.
  • the transparent thin film material in the method for fabricating the cylindrical lens grating is a transparent photoresist material, and the cylindrical lens is formed into a three-layer layered structure.
  • the grating is taken as an example, and the manufacturing step may include the following steps.
  • step S301 Continue to perform step S301 to form two layers of transparent photoresist on the substrate twice.
  • the exposure process is specifically an exposure process of the transparent photoresist through a transparent mask, which is a gray-scale mask or a semi-transparent mask.
  • the semi-transparent mask process is a semi-transparent mask process which performs selective exposure and development by different intensity of light transmitted through different regions, and has corresponding regions with different transmittances on the mask;
  • the gray-scale masking process performed by the film plate is carried out by selective exposure and development by the grating effect, so that the intensity of light transmitted through the film in different regions is different.
  • the unretained portion of the transparent photoresist after exposure is washed away, thereby retaining the A pattern formed by a transparent photoresist.
  • the total height of the three-layer transparent photoresist is the same as the preset height of the cylindrical lens grating.
  • the cylindrical lens grating is fabricated by using the device and the process for manufacturing the display panel, it is not required to be mechanically produced, thereby reducing the manufacturing cost, simplifying the manufacturing process, and improving the cylindrical lens grating. Precision.
  • the method for fabricating the cylindrical lens grating provided by the above embodiment is described by taking a cylindrical lens grating having a three-layer hierarchical structure as an example.
  • the embodiment of the present invention is not limited thereto, and the specific layering is performed.
  • the number of layers of the structure can be determined according to the preset height of the cylindrical lens grating and the height of each layer of transparent photoresist, thereby ensuring that the total height of the column lens grating layered structure is the same as the preset height.
  • the embodiment of the present invention provides a cylindrical lens grating, as shown in FIG. 1 or FIG. 2, comprising: a substrate 40 and a layered structure formed of at least two transparent films.
  • the transparent film may be a transparent photoresist.
  • the patterns formed by the respective layers smoothly transition on the side surfaces.
  • the cylindrical lens grating includes: a substrate 40 and a first transparent photoresist pattern 411, a second transparent photoresist pattern 412, and a third transparent photoresist pattern 413.
  • the pattern formed by the outermost layer of the layered structure completely covers the pattern formed by the non-outermost layer of the layered structure.
  • the cylindrical lens grating includes: a substrate 40 and a fourth transparent photoresist pattern 414, a fifth transparent photoresist pattern 415, and a sixth transparent photoresist pattern 416.
  • the sixth transparent photoresist pattern 416 completely covers the fourth transparent photoresist pattern 414 and the fifth transparent photoresist pattern 415.
  • the cylindrical lens grating provided by the embodiment of the invention is fabricated by using the device and the process for manufacturing the display panel, and does not need to be fabricated by mechanical methods, thereby reducing the manufacturing cost, simplifying the manufacturing process, and improving the cylindrical lens. The accuracy of the grating. It should be noted that the cylindrical lens grating provided by the embodiment of the present invention is described by taking a three-layer transparent film as an example. The embodiment of the present invention is not limited thereto, and the number of layers in the specific layered structure should satisfy the column. The total height of all layers in the lens grating hierarchy is the same as the preset height.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
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Abstract

提供了一种柱透镜光栅及其制作方法。该制作方法包括:在基板(40)上形成并预固化处理透明薄膜材料,形成至少一层透镜薄膜(411,412,413);采用构图工艺,在该至少一层透明薄膜(411,412,413)上形成柱透镜光栅图形;固化柱透镜光栅图形,形成柱透镜光栅。利用该制作方法,制作柱透镜的制作工艺变得简单,并且提高了柱透镜光栅的精度。

Description

柱透镜光栅及其制作方法 技术领域
本发明的实施例涉及一种柱透镜光栅及其制作方法。 背景技术
棵眼三维(3D )显示技术可以分为视差挡板显示技术和柱透镜光栅显示 技术。 柱透镜光栅技术的原理是在显示面板前加上一层柱透镜光栅, 显示面 板上一部分亚像素显示左眼图像, 一部分显示右眼图像, 用于左右眼图像的 亚像素(左右眼像素)所发出的光经过柱透镜光栅, 由于柱透镜光栅的折射 作用, 传播方向发生偏折, 从而使左眼像素的光射入观看者的左眼, 右眼像 素的光射入观看者的右眼。
现有技术中, 柱透镜光栅制作方法通常是先用很硬的刀具, 例如镶嵌有 金刚石的刀具, 在铜质圓辊上雕刻所需要的柱透镜凹槽, 然后再用树脂材料 (用于制作柱透镜光栅的材料)从铜质圓辊上将图形复制下来制备而成。 但 是, 该现有柱透镜光栅的制作方法成本高, 制作流程复杂, 并且由于釆用机 械方法进行制作 , 使得制作出的柱透镜光栅的精度较低。 发明内容
本发明的实施例在于提供一种柱透镜光栅及其制作方法, 以使得制作柱 透镜的制作工艺简单, 并提高柱透镜光栅的精度。
本发明的一个方面提供了一种柱透镜光栅制作方法, 包括: 在基板上形 成并预固化处理透明薄膜材料, 形成至少一层透明薄膜; 釆用构图工艺, 在 所述至少一层透明薄膜上形成一柱透镜光栅图形;固化所述柱透镜光栅图形, 形成柱透镜光栅。
本发明的另一个方面提供了一种柱透镜光栅, 包括: 基板和在所述基板 上设有由至少两层透明薄膜形成的分层结构。
用于本发明实施例提供的柱透镜光栅的制作方法可釆用制作显示面板的 设备和工艺进行, 不需要釆用机械方法进行制作, 因此降低了制作的成本, 简化了制作工艺, 同时提高了柱透镜光栅的精度。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例的附图作 简单地介绍,显而易见地,下面描述中的附图仅仅涉及本发明的一些实施例, 而非对本发明的限制。
图 1为本发明实施例提供的一种柱透镜光栅的结构示意图;
图 2为本发明实施例提供的另一种柱透镜光栅的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例的附图,对本发明实施例的技术方案进行清楚、 完整地描述。显然, 所描述的实施例是本发明的一部分实施例, 而不是全部的实施例。 基于所描 述的本发明的实施例, 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
除非另作定义, 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一" 、 "第二" 以及类似的词语并不表示任何顺序、 数量或者重要性,而只是用来区分不同的组成部分。同样, "一个 "或者 "一" 等类似词语也不表示数量限制, 而是表示存在至少一个。 "包括" 或者 "包 含" 等类似的词语意指出现在 "包括" 或者 "包含" 前面的元件或者物件涵 盖出现在 "包括" 或者 "包含" 后面列举的元件或者物件及其等同, 并不排 除其他元件或者物件。 "连接" 或者 "相连" 等类似的词语并非限定于物理 的或者机械的连接, 而是可以包括电性的连接, 不管是直接的还是间接的。 "上" 、 "下" 、 "左" 、 "右" 等仅用于表示相对位置关系, 当被描述对 象的绝对位置改变后, 则该相对位置关系也可能相应地改变。
本发明实施例提供了一种柱透镜光栅的制作方法, 其包括如下步骤。 S101、 在基板上形成并预固化处理透明薄膜材料, 形成至少一层具有一 定高度的透明薄膜。
优选地, 该透明薄膜材料可以是透明光刻胶材料, 例如通过沉积或涂敷 的方式形成在基板上。 该预固化处理例如为加热处理。 透明光刻胶有正性光 刻胶和负性光刻胶之分, 正性光刻胶的特点是曝光的部分会在显影工艺中被 洗掉; 负性光刻胶的特点是未曝光的部分会在显影工艺中被洗掉。
5102、 釆用一次构图工艺, 在至少一层透明薄膜上形成一柱透镜光栅图 形。
示例地, 该构图工艺可以为, 对一层透明薄膜进行曝光和显影工艺, 通 过该至少一层透明薄膜形成柱透镜光栅图形。该透明薄膜优选为透明光刻胶 , 进而可直接对该透明光刻胶进行曝光工艺, 而不需要再在透明薄膜上涂敷光 刻胶进行曝光工艺, 从而简化了制作流程。
进一步地,曝光工艺可以为通过透光掩膜板对透明光刻胶进行曝光工艺, 该透光掩膜板可以为灰阶掩膜板或者半透式掩膜板。 半透视掩膜板进行的半 透式掩膜工艺是通过在不同区域透过光的强度不同, 而进行选择性曝光、 显 影, 相应的掩膜板上具有透过率不同的区域; 灰阶掩膜板进行的灰阶掩膜工 艺是通过光栅效应, 使膜板在不同区域透过光的强度不同, 而进行选择性曝 光、 显影。
5103、 固化该柱透镜光栅图形, 形成柱透镜光栅。
该固化处理例如为加热处理。 在该实施例中, 通过执行一次步骤 S101 至 S103 , 以形成柱透镜光栅。
在示例中, 该柱透镜光栅可以通过釆用两层、 三层、 或者三层以上的透 明薄膜形成, 则重复上述 S101至 S103两次、 三次或者三次以上。
进一步地, 在制作柱透镜光栅的过程中, 如果需要利用至少两次构图工 艺, 则一次构图工艺中形成的图形与经过前一次构图工艺后形成的图形在侧 表面上平滑过渡。 例如, 在制作三层分层结构的柱透镜光栅时, 需要利用三 次构图工艺。 第二次构图工艺中形成的图形与第一次构图工艺中形成的图形 在侧表面上平滑过渡, 第三次构图工艺中形成的图形与第二次构图工艺中形 成的图形在侧表面上平滑过渡, 也就保证了最终形成的柱透镜光栅侧表面的 平滑过渡。
更进一步地, 在制作柱透镜光栅的过程中, 如果需要釆用至少两次构图 工艺, 则最后一次构图工艺中形成的图形完全覆盖经过该最后一次构图工艺 之前的所有构图工艺后形成的图形。 优选地,在制作柱透镜光栅的过程中,如果需要利用至少两次构图工艺, 则一次构图工艺中形成的图形完全覆盖前一次构图工艺中形成的图形,例如, 在制作三层分层结构的柱透镜光栅时, 需要利用三次构图工艺。 第二次构图 工艺中形成的图形完全覆盖第一次构图工艺中形成的图形, 第三次构图工艺 中形成的图形完全覆盖第二次构图工艺中形成的图形。
由于该柱透镜光栅的制作方法是釆用制作显示面板的设备和工艺进行制 作的, 不需要釆用机械方法进行制作, 因此降低了制作的成本, 简化了制作 工艺, 同时提高了柱透镜光栅的精度。
示例地, 本发明实施例提供了一种柱透镜光栅的制作方法, 该柱透镜光 栅的制作方法中的透明薄膜材料为透明光刻胶材料, 并以形成三层分层结构 的柱透镜光栅为例进行说明, 本发明实施例并不局限于此, 其制作步骤可以 包括如下步骤。
S201、 在基板上形成并预固化处理透明光刻胶材料, 形成一层具有一定 高度的透明光刻胶。
S202、 对该透明光刻胶进行曝光工艺。
进一步地,曝光工艺可以为通过透光掩膜板对透明光刻胶进行曝光工艺, 该透光掩膜板为灰阶掩膜板或者半透式掩膜板。 半透视掩膜板进行的半透式 掩膜工艺是通过在不同区域透过光的强度不同, 而进行选择性曝光、 显影, 相应的掩膜板上具有透过率不同的区域; 灰阶掩膜板进行的灰阶掩膜工艺是 通过光栅效应,使掩膜板在不同区域透过光的强度不同, 而进行选择性曝光、 显影。
S203、 对该透明光刻胶进行显影工艺。
进行显影工艺时, 将曝光后透明光刻胶未保留的部分洗掉, 从而保留该 透明光刻胶形成的图形。
S204、 固化由该透明光刻胶形成的图形。
S205、 按照柱透镜光栅的预设高度以及所形成的每一层透明光刻胶的高 度, 再执行两次上述步骤 S201至 S204。
最终形成如图 1所示的柱透镜光栅。
该三层透明光刻胶的总高度与该柱透镜光栅的预设高度相同。
上述的柱透镜光栅的制作方法中, 形成的图形具体为形成该柱透镜光栅 分层结构中其中一层的图形。
这样, 由于该柱透镜光栅的制作方法是釆用制作显示面板的设备和工艺 进行制作的, 不需要釆用机械方法进行制作, 因此降低了制作的成本, 简化 了制作工艺, 同时提高了柱透镜光栅的精度。
需要说明的是, 上述实施例提供的柱透镜光栅的制作方法, 在实际的制 作中,该柱透镜光栅的分层结构中的各层之间的位置关系会存在一定的误差, 即不能保证形成的图形在侧表面上平滑过渡, 从而影响柱透镜光栅的精度, 因此, 本发明实施例在柱透镜光栅的实际制作中, 优选为将通过最后一次构 图工艺所形成的图形完全覆盖前两次构图工艺中所形成的图形, 进一步地, 第二次构图工艺形成的图形也完全覆盖第一次构图工艺中的图形, 形成的柱 透镜光栅如图 2所示。
另外, 上述实施例提供的柱透镜光栅的制作方法, 是以制作具有三层分 层结构的柱透镜光栅为例进行说明的, 本发明的实施例并不局限于此, 具体 的分层结构的层数可以根据该柱透镜光栅的预设高度和每一层透明光刻胶的 高度进行确定, 从而保证该柱透镜光栅分层结构的总高度与预设高度相同。
优选地, 本发明实施例还提供了另一种柱透镜光栅的制作方法, 该柱透 镜光栅的制作方法中的透明薄膜材料为透明光刻胶材料, 并以形成三层分层 结构的柱透镜光栅为例进行说明, 其制作步骤可以包括如下步骤。
5301、 在基板上形成一层透明光刻胶材料, 并预固化处理该透明光刻胶 材料, 形成一层具有一定高度的透明光刻胶。
5302、 继续执行步骤 S301两次在基板上形成两层透明光刻胶。
5303、 对形成的三层透明光刻胶同时进行曝光工艺。
进一步地,曝光工艺具体为通过透光掩膜板对透明光刻胶进行曝光工艺, 该透光掩膜板为灰阶掩膜板或者半透式掩膜板。 半透视掩膜板进行的半透式 掩膜工艺是通过在不同区域透过光的强度不同, 而进行选择性曝光、 显影, 相应的掩膜板上具有透过率不同的区域; 灰阶掩膜板进行的灰阶掩膜工艺是 通过光栅效应, 使膜板在不同区域透过光的强度不同, 而进行选择性曝光、 显影。
5304、 对曝光后的透明光刻胶进行显影工艺。
进行显影工艺时, 将曝光后透明光刻胶未保留的部分洗掉, 从而保留该 透明光刻胶形成的图形。
S305、 固化由该透明光刻胶形成的图形。
最终形成如图 1所示的柱透镜光栅。
该三层透明光刻胶的总高度与该柱透镜光栅的预设高度相同。
由于该柱透镜光栅的制作方法是釆用制作显示面板的设备和工艺进行制 作的, 不需要釆用机械方法进行制作, 因此降低了制作的成本, 简化了制作 工艺, 同时提高了柱透镜光栅的精度。
需要说明的是, 上述实施例提供的柱透镜光栅的制作方法, 是以制作具 有三层分层结构的柱透镜光栅为例进行说明的,本发明实施例并不局限于此, 具体的分层结构的层数可以根据该柱透镜光栅的预设高度和每一层透明光刻 胶的高度进行确定, 从而保证该柱透镜光栅分层结构的总高度与预设高度相 同。
针对上述柱透镜光栅的制作方法, 本发明实施例提供一种柱透镜光栅, 如图 1或图 2所示, 包括: 基板 40和由至少两层透明薄膜形成的分层结构。
优选地, 该透明薄膜可以是透明光刻胶。
进一步地, 在柱透镜光栅的分层结构中, 各层形成的图形之间在侧表面 上平滑过渡。
示例地,如图 1所示, 该柱透镜光栅包括: 基板 40和第一透明光刻胶图 形 411、第二透明光刻胶图形 412和第三透明光刻胶图形 413。第一透明光刻 胶图形 411、 第二透明光刻胶图形 412和第三透明光刻胶图形 413之间在侧 表面上平滑过渡。
更进一步地, 在柱透镜光栅的分层结构中, 该分层结构最外层形成的图 形完全覆盖该分层结构非最外层形成的图形。
示例地,如图 2所示, 该柱透镜光栅包括: 基板 40和第四透明光刻胶图 形 414、第五透明光刻胶图形 415和第六透明光刻胶图形 416。第六透明光刻 胶图形 416完全覆盖第四透明光刻胶图形 414和第五透明光刻胶图形 415。
进一步地,第五透明光刻胶图形 415完全覆盖第四透明光刻胶图形 414。 本发明实施例提供的柱透镜光栅, 是釆用制作显示面板的设备和工艺进 行制作的, 不需要釆用机械方法进行制作, 因此降低了制作的成本, 简化了 制作工艺, 同时提高了柱透镜光栅的精度。 需要说明的是, 本发明实施例提供的柱透镜光栅是以三层透明薄膜为例 进行说明的, 本发明实施例并不局限于此, 具体的分层结构中的层数应能够 满足该柱透镜光栅分层结构中所有层数的总高度与预设高度相同。
以上所述仅是本发明的示范性实施方式, 而非用于限制本发明的保护范 围, 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种柱透镜光栅的制作方法, 包括:
在基板上形成并预固化处理透明薄膜材料, 形成至少一层透明薄膜; 釆用构图工艺, 在所述至少一层透明薄膜上形成一柱透镜光栅图形; 固化所述柱透镜光栅图形, 形成柱透镜光栅。
2、根据权利要求 1所述的制作方法, 其中, 所述透明薄膜材料为透明光 刻胶材料。
3、根据权利要求 2所述的制作方法,其中,釆用构图工艺的次数为一次, 通过一层透明薄膜形成柱透镜光栅图形包括:
对所述一层透明光刻胶进行曝光和显影工艺,形成所述柱透镜光栅图形。
4、根据权利要求 3所述的制作方法, 包括: 通过透光掩膜板对所述透明 光刻胶进行曝光工艺, 所述透光掩膜板为灰阶掩膜板或者半透式掩膜板。
5、根据权利要求 1至 4任一权利要求所述的方法, 其中,在制作柱透镜 光栅的过程中, 需要釆用至少两次构图工艺时, 则第二次构图工艺中形成的 图形与经过第一次构图工艺后形成的图形在侧表面上平滑过渡。
6、 根据权利要求 1至 4任一权利要求所述的方法, 其中,
在制作柱透镜光栅的过程中, 釆用至少两次构图工艺时, 则最后一次构 图工艺中形成的图形完全覆盖经过所述最后一次构图工艺之前的所有构图工 艺后形成的图形。
7、一种柱透镜光栅, 包括: 基板和在所述基板上设有由至少两层透明薄 膜形成的分层结构。
8、根据权利要求 7所述的柱透镜光栅, 其中, 所述的透明薄膜为透明光 刻胶。
9、根据权利要求 7或 8所述的柱透镜光栅, 其中, 所述柱透镜光栅的分 层结构中, 各层形成的图形之间在侧表面上平滑过渡。
10、 根据权利要求 7或 8所述的柱透镜光栅, 其中, 所述柱透镜光栅的 分层结构中, 所述分层结构最外层形成的图形完全覆盖所述分层结构非最外 层形成的图形。
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