WO2015081634A1 - 用于显示器的玻璃基板及其制造方法 - Google Patents
用于显示器的玻璃基板及其制造方法 Download PDFInfo
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- WO2015081634A1 WO2015081634A1 PCT/CN2014/071702 CN2014071702W WO2015081634A1 WO 2015081634 A1 WO2015081634 A1 WO 2015081634A1 CN 2014071702 W CN2014071702 W CN 2014071702W WO 2015081634 A1 WO2015081634 A1 WO 2015081634A1
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- WIPO (PCT)
- Prior art keywords
- glass substrate
- vapor deposition
- compensation film
- optical
- optical compensation
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/32—After-treatment
- C03C2218/328—Partly or completely removing a coating
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
Definitions
- the present invention relates to a glass substrate for a display and a method of manufacturing the same, which are particularly suitable for use in a glass substrate processed by a gas phase deposition apparatus. Background technique
- Chemical vapor deposition is a process in which a reaction substance is chemically reacted under a gaseous condition to form a solid substance deposited on the surface of a heated solid substrate to produce a solid village material. It essentially belongs to the gaseous mass transfer process of the atomic category.
- Chemical vapor deposition is a new technology for the preparation of materials developed in recent decades. Chemical vapor deposition has been widely used to purify materials, develop new crystals, and deposit various single crystal, polycrystalline or glassy film materials. These materials may be oxides, sulfides, nitrides, carbides, or binary or multi-element intermetallic compounds of the III-V, II-IV, IV-VI family, and their physical functions can pass through the gas phase. The doping deposition process is precisely controlled.
- PVD Physical Vapor Deposition
- a material in contrast, Physical Vapor Deposition (PVD) technology means that under vacuum conditions, physical sources are used to vaporize a solid or liquid surface of a material into gaseous atoms, molecules or partially ionized into ions, and pass through a low-pressure gas. (or plasma) process, a technique of depositing a film having a specific function on the surface of a substrate.
- the main methods of physical vapor deposition include vacuum evaporation, sputter coating, arc plasma plating, ion plating, and molecular beam implantation.
- physical vapor deposition technology can deposit not only metal films, alloy films, but also compounds, ceramics, semiconductors, polymer films, and the like.
- Vapor deposition equipment typically includes a reaction chamber, a gas supply system, and a heating system.
- the reaction chamber includes a holder for supporting the substrate to be processed, such as a ram or the like, and the heating system includes, for example, a heating plate on which a heating resistor wire is disposed.
- the display panel using the vapor deposition process often produces color unevenness (mura) due to the uniformity of the process, which may be caused by the inability to overcome the mechanical design of the machine hardware in the process, or may be caused by dry innate materials.
- the limitation with the combination of the process technology results in a color unevenness in a fixed shape and a fixed size range at a specific position of the glass slab.
- FIG. 1 schematically shows a heating plate 10 in a vapor deposition apparatus for processing a glass substrate in the prior art.
- a heating resistor 10 is usually disposed on a heating plate 10 in a vapor deposition apparatus for processing a glass substrate, and the ejector pin 2 also corresponds to a position of the glass substrate in the display region.
- Fig. 2 is a view showing a state in which a glass substrate 1 of a display is subjected to a vapor deposition process.
- the presence of the ram 2 and the resistance wire 3 may cause the glass substrate 1 to be unevenly heated, and generally the temperature at the position corresponding to the resistance wire 3 is high.
- the temperature at the position corresponding to the ejector pin 2 is low, thereby affecting the process quality and optical properties of the glass substrate.
- the glass substrate treated by the vapor deposition process has a low transmittance at a position corresponding to the ram 2 or the resistance wire 3, resulting in a mura phenomenon in the resulting display panel. This greatly reduces the performance and value of the display panel. Summary of the invention
- the invention provides a glass substrate for a display and a manufacturing method thereof, which can effectively solve the chromatic aberration defect
- the present invention provides a glass substrate for a display.
- the glass substrate is processed by a vapor deposition apparatus, wherein the glass substrate includes an optical compensation film, and the optical compensation film is in a compensation area.
- the compensation region is shaped and positioned to correspond to a heat unevenness region caused by the vapor deposition apparatus on the glass substrate, compared to other regions having a higher transmittance.
- the optical compensation film can change the light intensity distribution received by the observer by changing the propagation path of the light, so that the image seen by the observer is uniformly distributed with the light intensity, thereby alleviating the color unevenness of the display panel. phenomenon.
- the color unevenness is caused by uneven heating of the glass substrate in the vapor deposition apparatus, or the temperature is higher than the standard temperature, or the temperature is lower than the standard temperature, resulting in a decrease in the transmittance at the position.
- the compensation area on the optical compensation film is located at this position, which accurately compensates for the defects of the glass substrate.
- the heat unevenness region includes a position of the glass substrate corresponding to a heating resistor of the vapor deposition apparatus and/or the heating plate. According to the applicant's research, the temperature at these two locations differs greatly from the standard temperature.
- the compensation region of the optical compensation film of the glass substrate according to the present invention preferably includes these two positions.
- the optical compensation film includes an optical microstructure capable of increasing transmittance.
- the essence of the optical microstructure is to change the angle of refraction of the light by selecting different materials to meet the requirements of the optical path design.
- the optical microstructures can include, for example, particulate protrusions.
- Embodiment 4 modified according to Embodiment 3 optical microstructures having a higher density than other regions are disposed in the compensation region of the optical compensation film. In this way, the transparency of the glass substrate in the compensation area is improved.
- Embodiment 5 modified according to Embodiment 3 or 4, an optical microstructure having a larger transmittance than other regions is disposed in the compensation region of the optical compensation film. In this way, the transparency of the glass substrate in the compensation area is improved.
- the vapor deposition apparatus is a chemical vapor deposition chamber.
- the chemical vapor deposition chamber is widely used in the manufacturing process of a glass substrate of a liquid crystal display.
- Embodiment 7 which is improved according to any one of Embodiments 1 to 6, the optical compensation film is attached on the surface of the glass substrate.
- Optical compensation films can be applied to glass substrates by a variety of processes, as is known to those skilled in the art.
- the present invention also provides a method for manufacturing a glass substrate, comprising: Step 1 : vapor-depositing the glass substrate; and step 2: coating the glass substrate subjected to the step 1 with an optical compensation film, wherein , the optical compensation film has higher transmittance in the compensation region than other regions, and the shape and position of the compensation region are set to be heated by the vapor deposition device on the glass substrate.
- the average area corresponds.
- the color unevenness is caused by uneven heating of the glass substrate in the vapor deposition apparatus, or the temperature is higher than the standard temperature, or the temperature is lower than the standard temperature, resulting in the transmittance at the position. decline.
- the compensation area on the optical compensation film is located at this position, which accurately compensates for the defects of the glass substrate.
- the heat unevenness region is included at a position of the glass substrate corresponding to a heating rod of the ejector pin and/or the heating plate of the vapor deposition apparatus.
- the temperature at the position corresponding to the ram is lower than the standard temperature, and the temperature at the position corresponding to the heating wire is higher than the standard temperature. It is therefore preferred to focus on compensating for these two locations.
- an optical microstructure capable of increasing transmittance is disposed on the optical compensation film, and an optical microstructure having a higher density than other regions is disposed in the compensation region of the optical compensation film, or An optical microstructure having a greater transmittance than other regions is disposed in the compensation region of the optical compensation film.
- the optical compensation film in the compensation region has higher transmittance by changing the density or transmittance of the optical microstructure of the optical compensation film.
- the position of the compensation zone is selected according to the conditions of the vapor deposition apparatus and the vapor deposition process. In this way, the defects of the glass substrate are effectively and accurately compensated, and the color unevenness of the display panel is alleviated, and the intensity of light received by the observer is uniformly distributed throughout the display area.
- Figure 1 shows a heating plate of a vapor deposition apparatus of a glass substrate of a general display
- Figure 2 shows a glass substrate and a heating plate in a vapor deposition apparatus
- Fig. 3 shows an optical compensation film and related optical effect diagram of a glass substrate according to the present invention.
- Fig. 1 schematically shows a heating plate 10 in a vapor deposition apparatus for treating a glass substrate in the prior art.
- a heating resistor wire 3 is usually provided on a heating plate i0 in a vapor deposition apparatus for manufacturing or processing a glass substrate, and the ejector pin 2 also corresponds to a position of the glass substrate in the display region.
- the vapor deposition apparatus is, for example, a chemical vapor deposition chamber.
- Fig. 2 is a view showing a state in which a glass substrate 1 of a display is subjected to a vapor deposition process.
- the presence of the ram 2 and the resistance wire 3 may cause the glass substrate 1 to be heated unevenly, and generally the temperature at the position corresponding to the resistance wire 3 is higher, and the ejector pin 2 The temperature at the corresponding position is low, which affects the process quality and optical properties of the glass substrate.
- a glass substrate produced or processed by a vapor deposition process has a low transmittance at a position corresponding to the ram 2 or the resistance wire 3, resulting in a resulting miira phenomenon of the resulting display panel. .
- Fig. 3 shows an optical compensation film 5 of a glass substrate according to the present invention, and related optical effect diagrams.
- the uppermost end of Fig. 3 schematically shows the display area 9 having color unevenness in the case of uncompensated. Among them, it can be seen that the uncompensated display area 9 is dark in the partial area (i.e., corresponding to the temperature uneven area in the vapor deposition apparatus described above, that is, the compensation area requiring optical compensation).
- the remainder of Figure 3 corresponds to the section of the display area 9 along the A-A' line.
- the schematic at the bottom of Figure 3 shows the original backlight intensity distribution 4 in the display. It can be seen that the backlight intensity is evenly distributed.
- the optical compensation film 5 of the glass substrate according to the present invention is shown in Fig. 3 above the original backlight intensity distribution 4.
- the schematic view on the optical compensation film 5 shows the light intensity distribution 6 after the light of the backlight passes through the optical compensation film 5. It can be seen that at this time, the light in the compensation area is stronger than the other areas.
- the schematic diagram above the light intensity distribution 6 shows the gray scale difference due to the color unevenness of the glass substrate 7 . It can be seen that the image in the compensation area is concave.
- the schematic diagram above the gray scale difference 7 shows the light intensity distribution 8 after passing through the glass substrate including the optical compensation film 5. It can be seen that the light intensity distribution 8 is uniformly hooked throughout the display area, which is also the light intensity distribution finally received by the human eye.
- the optical compensation film 5 can be attached, for example, to the surface of the glass substrate to be compensated, and the compensation region of the optical compensation film corresponds to the uneven color region of the glass substrate.
- the compensation area in Figure 3 is only illustrative.
- the shape and position of the compensation area may correspond to any uneven heat-receiving area of the glass substrate 1 in the vapor deposition apparatus.
- the optical compensation film 5 has a higher transmittance in the compensation region than in other regions.
- the uneven heat receiving position may include a region of the glass substrate 1 corresponding to the top turn 2 of the vapor deposition apparatus and/or the heating resistance wire 3 of the heater board 10.
- the compensation region has a circular shape conforming to the shape of the cross section (cross section in the horizontal direction) of the jack 2 .
- the heating resistor wire 3 is extended on the plane of the heating plate 10. The coil, at this time, the shape and position of the compensation area corresponds to the path of the coil.
- the optical compensation film 5 may include an optical sign structure capable of increasing transmittance. The essence is to change the angle of refraction of the light through the choice of different materials to reprocess the light to meet the requirements of the optical path.
- the optical microstructures can include, for example, particulate protrusions.
- a dense optical microstructure can be arranged in the compensation region of the optical compensation film 5, that is, the optical compensation film as shown in FIG. 5.
- the invention also proposes a method for manufacturing a glass substrate, comprising:
- Step 1 performing vapor deposition on the glass substrate 1;
- Step 2 coating the glass substrate 1 subjected to step 1 with an optical compensation film 5,
- the optical compensation film 5 has higher transmittance in the compensation region than other regions, and the shape and position of the compensation region are set to be opposite to the heat uneven region caused by the vapor deposition device on the glass substrate 1. correspond.
- This color unevenness is shown in the display area 9 in Fig. 3.
- the color unevenness is caused by the uneven heating of the glass substrate 1 in the vapor deposition apparatus, or the temperature is higher than the standard temperature, or the temperature is lower than the standard temperature, so that the transmittance at the position is decreased, so
- the display area 9 has a darker color in the compensation area.
- the compensation area on the optical compensation film 5 is located at this position, which accurately compensates for the defects of the glass substrate.
- the heat unevenness region is included at a position of the glass substrate corresponding to the ejector pin 2 of the vapor deposition apparatus and/or the heating resistor wire 3 of the heating plate.
- the temperature of V at the position corresponding to the ram 2 is lower than the standard temperature, and the temperature at the position corresponding to the heating resistor wire is higher than the standard temperature. It is therefore preferred to focus on compensating for these two locations.
- an optical microstructure capable of increasing transmittance is disposed on the optical compensation film 5, and an optical microstructure having a higher density than other regions is disposed in the compensation region of the optical compensation film.
- the optical compensation film 5 in Fig. 3 it can be seen that it has denser particle-like projections in the compensation region, which is an optical sign structure. It is also possible to arrange an optical sign structure having a larger transmittance than the other regions in the compensation region of the optical compensation film, in such a manner as to increase the transmittance of the optical compensation film in the compensation region.
- the optical compensation film in the compensation area is made to have higher transmittance.
- the position of the compensation zone is selected according to the vapor deposition apparatus and the vapor deposition process conditions. In this way, the defects of the glass substrate are effectively and accurately compensated, and the color unevenness of the display panel is alleviated, and the intensity of the light received by the observer is uniformly distributed throughout the display area.
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Abstract
一种用于显示器的玻璃基板(1)及制造方法,玻璃基板(1)通过气相沉积设备进行处理,包括光学补偿膜(5),光学补偿膜(5)在补偿区域内相比其它区域具有较高的透光度,补偿区域的形状和位置设置成与玻璃基板(1)上的由气相沉积设备所致的受热不均区域相对应,缓解了显示面板的色不均现象。
Description
用于显示器的玻璃基板及其制造方法 技术领域
本发明涉及一种用于显示器的玻璃基板及其制造方法, 其尤其适用于通过气 相沉积设备来进行处理的玻璃基板。 背景技术
现代科学和技术需要使用大量功能各异的新材料, 这些功能材料必须是高纯 的, 或者是在高纯材料中有意地掺入某种杂质而形成的掺杂材料。 但是, 许多传 统的制备方法, 如高温熔炼、 水溶液中沉淀和结晶等往往难以满足这些要求, 也 难以保证得到高纯度的产品。
化学气相沉积 (Chemica vapor deposition, 简称 CVD)是反应物质在气态条件 下发生化学反应, 生成固态物质沉积在加热的固态基体表面, 进而制得固体村料 的工艺技术。 它本质上属于原子范畴的气态传质过程。
化学气相沉积是近几十年发展起来的制备材料的新技术。 化学气相沉积法已 经广泛用于提纯物质、 研制新晶体、 淀积各种单晶、 多晶或玻璃态薄膜材料。 这 些材料可以是氧化物、 硫化物、 氮化物、 碳化物, 也可以是 III-V、 II-IV、 IV-VI 族中的二元或多元的元素间化合物, 而且它们的物理功能可以通过气相掺杂的淀 积过程精确控制。
与之相对, 物理气相沉积 (Physical Vapor Deposition, PVD)技术表示在真空条 件下, 采用物理方法, 将材料源一一固体或液体表面气化成气态原子、 分子或部 分电离成离子, 并通过低压气体 (或等离子体)过程, 在基体表面沉积具有某种特 殊功能的薄膜的技术。 物理气相沉积的主要方法包括真空蒸镀、 溅射镀膜、 电弧 等离子体镀、 离子镀膜以及分子束夕卜延等。 目前, 物理气相沉积技术不仅可沉积 金属膜、 合金膜, 还可以沆积化合物、 陶瓷、 半导体、 聚合物膜等。
气相沉积设备通常包括反应室、 供气系统和加热系统。 反应室包括用于支撑 被处理基板的支架, 例如顶杆等, 而加热系统例如包括加热板, 加热板上布置有 加热电阻丝。
而采用气相沉积工艺的显示面板因工艺均匀度的关系, 常会产生色不均 (mura) 现象, 这可能是 于制程中机台硬件上无法克服的机构设计所导致, 亦可能是由 干先天材料与工艺技术的搭配限制所造成, 使得在玻璃大板的特定位置处具有固 定形状及固定大小范围内的色不均现象。
申请人对此进行了相关探究, 发现了产生此技术问题的根源。
图 i示意性显示了现有技术中的用于处理玻璃基板的气相沉积设备中的加热 板 10。 参照图 1 , 用于处理玻璃基板的气相沉积设备中的加热板 10上通常设置 有加热电阻丝 3 , 而顶杆 2也恰好对应着玻璃基板的位于显示区域中的位置。
图 2显示了对显示器的玻璃基板 1进行气相沉积工艺时的示意图。 相应地, 在对玻璃基板 1进行气相沉积工艺的过程中, 顶杆 2和电阻丝 3的存在会造成玻 璃基板 1受热不均勾, 通常情况下为电阻丝 3所对应的位置处温度较高, 而顶杆 2 所对应的位置处温度较低, 从而影响玻璃基板的工艺质量和光学性质。 通常情 况下, 通过气相沉积工艺所处理的玻璃基板, 其在与顶杆 2或电阻丝 3所对应的 位置处透光度较低, 导致最终所得到的显示面板具有色差 (mura)现象。 这大大降 低了显示面板的性能和价值。 发明內容
针对上述现有技术中的问题, 即在气相沉积工艺中, 在气相沉积设备中由于 所处理的玻璃基板受热不均而造成透光度差异,最终导致显示面板具有色差 (numi) 现象这一缺陷, 本发明提出了一种用于显示器的玻璃基板及其制造方法, 其可有 效解决色差缺陷》
本发明提出了一种用于显示器的玻璃基板, 在实施方案 1 中, 所述玻璃基板 通过气相沉积设备进行处理, 其中, 所述玻璃基板包括光学补偿膜, 所述光学补 偿膜在补偿区域内相比其它区域具有较高的透光度, 所述补偿区域的形状和位置 设置成与所述玻璃基板上的由气相沉积设备所致的受热不均区域相对应。 以此方 式, 光学补偿膜能够通过改变光的传播路线来改变观察者所接收到的光线强度分 布, 使得观察者所看到的画面是光线强度均匀分布的, 从而缓解了显示面板的色 不均现象。 色不均现象是由于玻璃基板在气相沉积设备中受热不均所导致, 其或 是温度高于标准温度,或是温度低于标准温度,导致该位置处的透光度有所下降。 而光学补偿膜上的补偿区域正是位于该位置处, 精准地弥补了玻璃基板的缺陷。
在根据实施方案 1所改进的实施方案 2中, 所述受热不均区域包括所述玻璃 基板的与所述气相沉积设备的顶軒和 /或加热板的加热电阻丝相对应的位置处。根 据申请人的研究, 这两处位置的温度与标准温度相差尤其大。 通常顶杆所对应的 位置处的温度低于标准温度, 而加热电阻丝所对应的位置处的温度高于标准温 度。 因此根据本发明的玻璃基板的光学补偿膜的补偿区域优选包含这两个位置 处。
在根据实施方案 1或 2所改迸的实施方案 3中, 所述光学补偿膜包括能够增 加透光度的光学微结构。 光学微结构的本质即是通过不同材料的选择, 以改变光 线的折射角度, 对光线进行二次处理, 满足:光路设计需求。 该光学微结构例如可 以包括粒子状的凸起。
在根据实施方案 3所改进的实施方案 4中, 在所述光学 偿膜的所述补偿区 域内布置有相比其它区域密度较大的光学微结构。 以此方式提高了补偿区域内的 玻璃基板的透光度。
在根据实施方案 3或 4所改进的实施方案 5中, 在所述光学补偿膜的所述补 偿区域内布置有相比其它区域透光度较大的光学微结构。 以此方式提高了补偿区 域内的玻璃基板的透光度。
在根据实施方案 i到 5中任一个所改迸的实施方案 6中, 所述气相沉积设备 为化学气相沉积室。 化学气相沉积室在 ^于液晶显示器的玻璃基板的制造工艺中 广泛使用。
在根据实施方案 1到 6中任一个所改进的实施方案 7中, 所述光学补偿膜贴 附在所述玻璃基板的表面上。 光学补偿膜可以通过多种工艺贴跗到玻璃基板上, 这对于本领域技术人员而言是已知的。
本发明还提出了一种用于制造玻璃基板的方法, 包括: 步骤 1 : 对所述玻璃 基板进行气相沉积; 歩骤 2: 对经过歩骤 1 的所述玻璃基板涂覆光学 偿膜, 其 中, 使得所述光学补偿膜在补偿区域内相比其它区域具有较高的透光度, 将所述 补偿区域的形状和位置设置成与所述玻璃基板上的由气相沉积设备所致的受热 不均区域相对应。 如上所述, 色不均现象是由于玻璃基板在气相沉积设备中受热 不均所导致, 其或是温度高于标准温度, 或是温度低于标准温度, 导致该位置处 的透光度有所下降。 而光学补偿膜上的补偿区域正是位于该位置处, 精准地弥补 了玻璃基板的缺陷。
优选地, 使得所述受热不均区域包括所述玻璃基板的与所述气相沉积设备的 顶杆和 /或加热板的加热电阻丝相对应的位置处。通常顶杆所对应的位置处的温度 低于标准温度, 而加热电阻丝所对应的位置处的温度高于标准温度。 因此优选重 点对这两个位置进行补偿。
优选地, 在所述光学补偿膜上设置能够增加透光度的光学微结构, 并且在所 述光学补偿膜的所述补偿区域内布置相比其它区域密度较大的光学微结构, 或在 所述光学补偿膜的所述补偿区域内布置相比其它区域透光度较大的光学微结构。
根据本发明的玻璃基板,通过改变光学补偿膜的光学微结构的密度或透光度, 使补偿区域中的光学补偿膜具有更高的透光度。 而补偿区域的位置根据气相沉积 设备和气相沉积工艺条件来选择。 以此方式, 有效、 精准地弥补了玻璃基板的缺 陷, 同时显示面板的色不均现象得到缓解, 观察者所接收的光线强度在整个显示 区域是均匀分布的。
上述技术特征可以各种适合的方式组合或由等效的技术特征来替代, 只要能 够达到本发明的目的。 附图说明
在下文中将基于仅为非限定性的实施例并参考對图来对本发明进行更详细的 描述。 其中:
图 1显示了通常的 ffl于显示器的玻璃基板的气相沉积设备的加热板; 图 2显示了气相沉积设备中的玻璃基板和加热板;
图 3显示了根据本发明的玻璃基板的光学补偿膜及相关光学效果图。
在图中, 相同的构件由相同的附图标记标示。 跗图并未按照实际的比例绘制。 具体实施方式
下面将参照 †图来详细地介绍本发明。
图 1示意性显示了现有技术中的用于处理玻璃基板的气相沉积设备中的加热 板 10。 参照图 , 用于制造或加工玻璃基板的气相沉积设备中的加热板 i0上通 常设置有加热电阻丝 3 , 而顶杆 2也恰好对应着玻璃基板的位于显示区域中的位 置。 该气相沉积设备倒如为化学气相沉积室。
图 2显示了对显示器的玻璃基板 1进行气相沉积工艺时的示意图。 相应地,
在对玻璃基板〗进行气相沉积工艺的过程中, 顶杆 2和电阻丝 3的存在会造成玻 璃基板 1受热不均匀, 通常情况下为电阻丝 3所对应的位置处温度较高, 而顶杆 2 所对应的位置处温度较低, 从而影响玻璃基板的工艺质量和光学性质。 通常情 况下, 通过气相沉积工艺所制作或加工的玻璃基板, 其在与顶杆 2或电阻丝 3所 对应的位置处透光度较低, 导致最终所得到的显示面板具有色差 (miira)现象。
图 3显示了根据本发明的玻璃基板的光学补偿膜 5, 以及相关的光学效果图。 图 3最上端示意性显示了在未补偿的情况下具有色不均现象的显示区域 9。 其中—可以看出, 未补偿的显示区域 9在部分区域 (即对应于上面所述在气相沉积 设备中的温度不均区域,也就是需要进行光学补偿的补偿区域)中显示颜色较暗。 图 3中其余部分均对应着显示区域 9沿 A- A' 线的剖面。
参照图 3 , 位于图 3最下部的示意图表示显示器中原始的背光强度分布 4。可 以看出背光强度是平均分布的。 图 3中在原始背光强度分布 4之上显示了根据本 发明的玻璃基板的光学补偿膜 5。 而位于光学补偿膜 5之上的示意图显示了背光 源的光透过光学补偿膜 5之后的光强分布 6。 可以看出, 此时, 补偿区域中的光 强大于其它区域。 位于光强分布 6之上的示意图显示了由于玻璃基板的色不均现 象所造成的灰阶差异 7。 可以看出补偿区域中的图像为凹陷的。 而位于灰阶差异 7之上的示意图显示了透过包括光学补偿膜 5的玻璃基板之后的光强分布 8。 可 以看出光强分布 8在整个显示区域是均勾的,这也是人眼最终接收到的光强分布。
可以看出, 在原始背光源的光经过光学补偿膜 5和具有透光度差异的玻璃基 板之后, 最终被使用者所接收到的光是均匀的。 也就以此方式解决了通过气相沉 积工艺处理的玻璃基板的色不均现象, 而达到了本发明的目的。 光学 偿膜 5 例如可以贴^在待补偿的玻璃基板的表面上, 光学 偿膜的 偿区域对应着玻璃 基板的色不均的区域。
然而, 图 3中的补偿区域只是示意性的。 补偿区域的形状和位置可以与任何 玻璃基板 1在气相沉积设备内的受热不均区域相对应。 而光学补偿膜 5在该补偿 区域内相比其它区域具有较高的透光度。
参照图 1和图 2,该受热不均位置处可能包括玻璃基板 1的与所述气相沉积 设备的顶杼 2和 /或加热板 10的加热电阻丝 3相对应的区域。 例如, 在如图 1所 示的情况中, 补偿区域具有与顶杆 2的横截面 (沿水平方向的截面) 形状相一致 的圆形形状。 同时, 如图 1所示, 加热电阻丝 3包括在加热板 10的平面上延伸
的线圈, 此时补偿区域的形状和位置与所述线圈的路径相对应。
关于光学补偿膜 5 , 可以采取多种方式来控制其透光度。 光学 偿膜 5可以 包括能够增加透光度的光学徵结构。 其本质即是通过不同材料的选择, 以改变光 线的折射角度, 对光线进行二次处理, 满足光路设 需求。 该光学微结构例如可 以包括粒子状的凸起。
为了使得光学补偿膜 5在补偿区域内相比其它区域具有较高的透光度, 可以 在光学补偿膜 5的补偿区域內布置密度较大的光学微结构, 即如图 3中的光学补 偿膜 5。 作为附加或替代的实施方案, 也可以在光学补偿膜 5的补偿区域内布置 有相比光学补偿膜 5的其它区域透光度较大的光学微结构。
本发明还提出了一种用于制造玻璃基板的方法, 包括:
歩骤 1 : 对玻璃基板 1进行气相沉积;
步骤 2: 对经过步骤 1的玻璃基板 1涂覆光学补偿膜 5 ,
其中, 使得光学补偿膜 5在补偿区域内相比其它区域具有较高的透光度, 将 补偿区域的形状和位置设置成与玻璃基板 1上的由气相沉积设备所致的受热不均 区域相对应。 该色不均现象如图 3中的显示区域 9所示。 色不均现象是由于玻璃 基板 1在气相沉积设备中受热不均所导致, 其或是温度高于标准温度, 或是温度 低于标准温度, 导致该位置处的透光度有所下降, 因此显示区域 9在补偿区域中 具有较暗的颜色。 而光学补偿膜 5上的补偿区域正是位于该位置处, 精准地弥补 了玻璃基板的缺陷。
优选地, 使得所述受热不均区域包括所述玻璃基板的与所述气相沉积设备的 顶杆 2和 /或加热板的加热电阻丝 3相对应的位置处。通常顶杆 2所对应的位置处 V 的温度低于标准温度, 而加热电阻丝所对应的位置处的温度高于标准温度。 因此优选重点对这两个位置进行补偿。
优选地, 在所述光学补偿膜 5上设置能够增加透光度的光学微结构, 并且在 所述光学补偿膜的所述补偿区域内布置相比其它区域密度较大的光学微结构。 如 图 3中的光学补偿膜 5所示,可以看出其在补偿区域内具有更密集的粒子状凸起, 该凸起即光学徵结构。 也可以在所述光学补偿膜的所述补偿区域內布置相比其它 区域透光度较大的光学徵结构, 以此方式来增大光学补偿膜在补偿区域中的透光 度。
根据本发明的玻璃基板,通过改变光学补偿膜的光学微结构的密度或透光度,
使补偿区域中的光学补偿膜具有更高的透光度。 而补偿区域的位置根据气相沉积 设备和气相沉积工艺条件来选择。 以此方式, 有效、 精准地弥补了玻璃基板的缺 陷, 同时显示面板的色不均现象得到缓解, 观察者所接收的光线强度在整个显示 区域是均匀分布的。
虽然己经参考优选实施例对本发明进行了描述, 但在不脱离本发明的范围的 情况下, 可以对其迸行各种改进并且可以用等效物替换其中的部件。 本发明并不 局限于文中公开的特定实施例, 而是包括落入权利要求的范 I内的所有技术方 案。
Claims
权 要求书
1. 一种用于显示器的玻璃基板, 所述玻璃基板通过气相沉积设备进行处 理, 其中, 所述玻璃基板包括光学补偿膜, 所述光学补偿膜在补偿区域内相比其 它区域具有较高的透光度, 所述补偿区域的形状和位置设置成与所述玻璃基板上 的由气相沉积设备所致的受热不均区域相对应。
2. 根据权利要求 1所述的玻璃基板, 其中, 所述受热不均区域包括所述玻 璃基板的与所述气相沉积设备的顶杆和 /或加热板的加热电阻丝相对应的位置处。
3. 根据权利要求 2所述的玻璃基板, 其中, 所述光学 偿膜包括能够增加 透光度的光学微结构。
4. 根据权利要求 3所述的玻璃基板, 其中, 在所述光学补偿膜的所述补偿 区域内布置有相比其它区域密度较大的光学微结构。
5. 根据权利要求 3所述的玻璃基板, 其中, 在所述光学补偿膜的所述补偿 区域内布置有相比其它区域透光度较大的光学微结构。
6. 根据权利要求 1所述的玻璃基板, 其中, 所述气相沉积设备为化学气相 沉积室。
7. 根据权利要求 2所述的玻璃基板, 其中, 所述气相沉积设备为化学气相 沉积室。
8. 根据权利要求 3所述的玻璃基板, 其中, 所述气相沉积设备为化学气相 沉积室。
9. 根据权利要求 4所述的玻璃基板, 其中, 所述气相沉积设备为化学气相 沉积室。
10. 根据权利要求 5所述的玻璃基板, 其中, 所述气相沉积设备为化学气相 沉积室。
11. 根据权利要求 1所述的玻璃基板, 其中, 所述光学补偿膜贴跗在所述玻 璃基板的表面上。
12. 根据权利要求 2所述的玻璃基板, 其中, 所述光学补偿膜贴^在所述玻 璃基板的表面上。
13。 根据权利要求 3所述的玻璃基板, 其中, 所述光学补偿膜贴 ^在所述玻 璃基板的表面上。
14. 根据权利要求 4所述的玻璃基板, 其中, 所述光学补偿膜贴跗在所述玻 璃基板的表面上。
15. 根据权利要求 5所述的玻璃基板, 其中, 所述光学补偿膜贴跗在所述玻 璃基板的表面上。
16. 一种 ¾于制造玻璃基板的方法, 包括:
步骤 对所述玻璃基板进行气相沉积;
歩骤 2; 对经过步骤 1的所述玻璃基板涂覆光学补偿膜- 其中, 使得所述光学补偿膜在补偿区域内相比其它区域具有较高的透光度, 将所述补偿区域的形状和位置设置成与所述玻璃基板上的由气相沉积设备所致 的受热不均区域相对应。
】7, 根据权利要求 16所述的方法, 其中, 使得所述受热不均区域包括所述 玻璃基板的与所述气相沉积设备的顶杆和 /或加热板的加热电阻丝相对应的位置 处。
18. 根据权利要求 16所述的方法, 其中, 在所述光学补偿膜上设置能够增 加透光度的光学微结构, 并 ϋ在所述光学补偿膜的所述补偿区域内布置相比其它 区域密度较大的光学微结构, 或在所述光学补偿膜的所述补偿区域内布置相比其 它区域透光度较大的光学微结构。
19。 根据权利要求 17所述的方法, 其中, 在所述光学补偿膜上设置能够增 加透光度的光学微结构, 并 在所述光学补偿膜的所述补偿区域内布置相比其它 区域密度较大的光学微结构, 或在所述光学补偿膜的所述补偿区域内布置相比其 它区域透:光度较大的光学微结构。
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| JP2003270636A (ja) * | 2002-03-18 | 2003-09-25 | Seiko Epson Corp | 液晶パネル、液晶デバイス、および、液晶デバイスを用いたプロジェクタ |
| CN101295108A (zh) * | 2008-05-28 | 2008-10-29 | 友达光电股份有限公司 | 软烤方法 |
| CN102197331A (zh) * | 2008-08-22 | 2011-09-21 | 阿克伦聚合物系统公司 | 基于拉伸聚合物薄膜的光学补偿薄膜 |
| CN101430944A (zh) * | 2008-10-21 | 2009-05-13 | 北京东方新材科技有限公司 | 一种透明导电膜的制备方法 |
| CN202182992U (zh) * | 2011-08-03 | 2012-04-04 | 北京京东方光电科技有限公司 | 印刷后基台 |
| CN103048832A (zh) * | 2013-01-09 | 2013-04-17 | 深圳市华星光电技术有限公司 | 聚酰亚胺溶液涂布方法及装置 |
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| CN103676296A (zh) | 2014-03-26 |
| CN103676296B (zh) | 2016-08-17 |
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