WO2013143302A1 - 柔性显示装置及其制作方法 - Google Patents
柔性显示装置及其制作方法 Download PDFInfo
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- WO2013143302A1 WO2013143302A1 PCT/CN2012/084833 CN2012084833W WO2013143302A1 WO 2013143302 A1 WO2013143302 A1 WO 2013143302A1 CN 2012084833 W CN2012084833 W CN 2012084833W WO 2013143302 A1 WO2013143302 A1 WO 2013143302A1
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- Prior art keywords
- display device
- substrate
- flexible
- flexible display
- flexible substrate
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Classifications
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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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133311—Environmental protection, e.g. against dust or humidity
Definitions
- the present disclosure relates to the field of display technologies, and in particular, to a flexible display device and a method of fabricating the same. Background technique
- Display modes and related devices that can realize flexible display mainly include liquid crystal displays, organic electroluminescent displays, electronic papers, electrophoretic displays, touch screens, and MEMS systems.
- MEMS Micro-Electro-Mechanical Systems, MEMS
- thin film photovoltaic cells organic electroluminescent displays, electronic papers, electrophoretic displays and thin film photovoltaic cells are particularly sensitive to water and oxygen, and water and oxygen may cause device performance degradation or failure.
- the substrates for flexible display devices mainly include plastics, ultra-thin glass, and metal foils.
- the substrate formed by the plastic substrate and the plastic-like material has the advantages of being transparent, soft and not easily damaged, but the water-proof and oxygen-insulating ability is poor;
- the ultra-thin glass substrate has transparent, soft, water-proof and oxygen barrier properties after being edge-cut laser-cut. Excellent advantages, but if it is difficult to use laser cutting (easy to chop) after directly preparing the device, it can only be cut by mechanical cutting, but the edge after mechanical cutting is rough and the bending performance is great.
- the metal foil substrate has the advantage of superior water and oxygen barrier properties, but has limited bending ability and is opaque. Therefore, no substrate is currently capable of fully functioning as a flexible display substrate. Summary of the invention
- the present disclosure enables the flexible display device to have better water and oxygen barrier properties while maintaining flexibility and bendability, and is less prone to breakage.
- a flexible display device formed on a substrate formed of a plastic substrate and a plastic-like material has better water and oxygen barrier properties.
- the present disclosure provides a flexible display device, including: a first flexible substrate, a flexible display device formed on a surface of the first flexible substrate, further comprising: a first flexible substrate on the first flexible substrate facing away from the flexible display device a second flexible substrate on the side.
- the first flexible substrate is a plastic substrate.
- the second flexible substrate comprises: a single layer substrate of a glass substrate, a metal foil A single-layer substrate or a multilayer substrate in which a glass substrate and a metal foil are laminated.
- the flexible display device further includes a third flexible substrate on a side of the flexible display device that faces away from the first flexible substrate.
- the third flexible substrate comprises: a single layer substrate of a glass substrate, a single layer substrate of a metal foil or a glass substrate, and a multilayer substrate laminated with a metal foil.
- the flexible display device further includes a third flexible substrate and the flexible display device, or between the two layers of the third flexible substrate, or located on the third flexible substrate A first antistatic layer of the outermost surface of the flexible display device.
- the glass substrate is a glass substrate having a smooth edge with a thickness of 0.1 mm or less.
- the material of the plastic substrate comprises: polycarbonate, polyethylene terephthalate, polyimide, polyarylate, polysulfone, polyethylene naphthalate Or one or a combination of two or more of fiber reinforced plastics.
- the flexible display device comprises: one or a combination of two or more of a liquid crystal display, an organic electroluminescence display, an electronic paper, an electrophoretic display, a touch screen, a MEMS, a thin film photovoltaic cell.
- the flexible display device further includes: a driving circuit for driving the flexible display device directly formed on a periphery of a display area of the flexible display device on the first flexible substrate, or attached to the An external driving circuit for driving the flexible display device on the first flexible substrate.
- the present disclosure also provides a method of fabricating a flexible display device, comprising the steps of: fabricating a flexible display device on a first flexible substrate; and facing a first flexible substrate on which the flexible display device is fabricated away from a side of the flexible display device Attached to the second flexible substrate.
- attaching a side of the first flexible substrate on which the flexible display device is fabricated, away from the flexible display device, to the second flexible substrate is specifically: bonding the first flexible substrate by an adhesive Attached to the second flexible substrate, or attached to the second flexible substrate by atmospheric pressure.
- the method further includes: The surface attachment of the flexible display device includes: a glass substrate, a single layer substrate of a metal foil, or a multilayer substrate in which one or both are laminated to form a third flexible substrate.
- the method when forming the third flexible substrate, the method further comprises: fabricating a first antistatic layer between the two layers or surfaces of the third flexible substrate.
- the second flexible substrate comprises: a glass substrate, a single layer substrate of metal foil, or one of or a multilayer substrate that is co-laminated.
- the method further includes the steps of: facing the second flexible substrate Forming a second antistatic layer on a surface of the first flexible substrate or on a surface of the first flexible substrate facing away from the flexible display device;
- the glass substrate is a glass substrate having a thickness of 0.1 mm or less and a smooth edge.
- the first flexible substrate comprises: a plastic substrate.
- the material of the plastic substrate comprises: polycarbonate, polyethylene terephthalate, polyimide, polyarylate, polysulfone, polyethylene naphthalate Or one or a combination of two or more of fiber reinforced plastics.
- the flexible display device comprises: one or a combination of two or more of a liquid crystal display, an organic electroluminescence display, an electronic paper, an electrophoretic display, a touch screen, a MEMS, a thin film photovoltaic cell.
- the fabricating the flexible display device on the first flexible substrate further includes simultaneously fabricating a driving circuit for driving the flexible display device;
- step of fabricating the flexible display device on the first flexible substrate further comprising: attaching a driving circuit to the flexible display device;
- the present disclosure encapsulates a flexible display device by an additional flexible substrate (second flexible substrate),
- the flexible display device formed on the plastic substrate is packaged with an ultra-thin glass substrate or a metal foil, so that the flexible display device has better water and oxygen barrier properties on the basis of maintaining flexibility and flexibility, and is not easily broken.
- FIG. 1 is a schematic structural view of a flexible display device according to Embodiment 1 of the present disclosure.
- FIG. 2 is a flow chart showing a typical manufacturing method of the flexible display device of FIG. 1;
- FIG. 3 is a schematic structural view of a flexible display device according to Embodiment 2 of the present disclosure;
- FIG. 4 is a schematic structural view of a flexible display device according to Embodiment 3 of the present disclosure.
- FIG. 5 is a schematic structural view of a flexible display device according to Embodiment 4 of the present disclosure.
- FIG. 6 is a schematic structural view of a flexible display device according to Embodiment 5 of the present disclosure.
- FIG. 7 is a flow chart showing a typical manufacturing method of the flexible display device of FIG. 6.
- FIG. 8 is a schematic structural view of another flexible display device according to Embodiment 5 of the present disclosure. detailed description
- the flexible display device of the present embodiment includes: a plastic substrate 1, a flexible display device 2 formed on the surface of the plastic substrate 1, and a glass substrate 3 on the side of the plastic substrate 1 facing away from the flexible display device 2.
- the plastic substrate in the present disclosure refers to a plastic material or property A substrate formed of a plastic-like material.
- the glass substrate 3 in the present disclosure is an ultra-thin glass substrate, specifically a glass substrate having a thickness of 0.1 mm or less.
- the ultra-thin glass substrate needs to be a glass substrate having a smooth edge, and the edge of the glass substrate can be laser-cut. The way to obtain a smooth edge is such that the glass substrate 3 has a property of not being broken after conventional bending.
- the flexible display device of the embodiment further includes a driving circuit (not shown) that drives the flexible display device.
- the driving circuit may be a driving circuit for driving the flexible display device directly formed on a periphery of a display area of the flexible display device on the first flexible substrate, similar to the current GOA (Gate Driver on Array) mode. The difference is that all the driving circuits (such as data line driving, gate driving, etc.) that drive the flexible display device in the embodiment are integrated on the first flexible substrate (can be fabricated together while manufacturing the flexible display device) Driving the external driving circuit of the flexible display device (ie).
- the external driving circuit may be all or part of the driving circuit, and other driving circuits may be directly integrated on the flexible display device.
- the first flexible substrate may be Only the data line driving circuit is attached, and the gate driving circuit is formed on the flexible display device in the GOA mode.
- the flexible display device 2 of the embodiment of the present disclosure includes: one or a combination of two or more of a liquid crystal display, an organic electroluminescence display, an electronic paper, an electrophoretic display, a touch screen, a MEMS, a thin film photovoltaic cell, that is, the same flexible display device
- the above two or more display devices may be included to realize display together.
- the material of the plastic substrate 1 includes a polycarbonate, a polyethylene terephthalate, a polyimide, a polyarylate, a polysulfone, a polyethylene naphthalate or a fiber reinforced plastic. Or a combination of two or more.
- a manufacturing process of a typical manufacturing method of the flexible display device of this embodiment is as shown in FIG. 2, and includes:
- Step S1 first, a flexible display device 2 is formed on the plastic substrate 1, and the flexible display device 2 is formed on the plastic substrate 1 by repeating thin film deposition, mask exposure, etching, or continuous printing.
- This step utilizes the characteristics that the plastic substrate 1 is not easily broken, and achieves a high yield in the preparation process of the flexible display device 2.
- the different shapes of the plastic substrate 1 can be produced by roll to roll, or can be produced by sheet by sheet of a single plastic substrate. If the roll-to-roll processing method can greatly increase the production capacity and thus reduce the production cost, it is also a difficult processing method for conventional glass and metal foil.
- Step S2 attaching a driving circuit on the flexible display device 2, the driving circuit for driving flexibility
- the display device 2 performs display.
- step S3 the side of the plastic substrate 1 on which the flexible display device 2 is formed is facing away from the flexible display device 2 is attached to the glass substrate 3.
- the above flexible display device manufacturing process is only for the case where the driving circuit is not integrated on the flexible display device, and the steps S2 and S3 can be reversed.
- the process of attaching the driving circuit can be omitted, that is, the step S2 can be omitted (of course, it is necessary to manufacture the driving circuit together with the flexible display device).
- the plastic substrate 1 can be attached to the glass substrate 3 by any of the following methods.
- the plastic substrate 1 on which the flexible display device 2 is fabricated is attached to the glass substrate by an adhesive
- the adhesive can firmly adhere the plastic substrate 1 to the glass substrate 3.
- the plastic substrate 1 and the glass substrate 3 are attached by a twisting machine.
- the plastic substrate 1 is pressed against the glass substrate 3 by atmospheric pressure, which saves material compared to the first method.
- steps S2 and S3 in this embodiment can be exchanged, as long as the connection point on the plastic substrate 1 on which the flexible display device 2 is prepared and the attached driving circuit is still exposed, the driving circuit component can be attached thereto. Attach the drive circuit.
- the flexible display device of the embodiment can realize the sealing function of water and oxygen barrier through the glass substrate, thereby improving the reliability of the product. Through the characteristics that the plastic substrate is not easily damaged, the high productivity and high yield rate of the flexible display device are realized. Since the flexible display device is fabricated on a plastic substrate, the ultra-thin glass substrate is not mechanically cut after laser cutting, so the ultra-thin glass substrate maintains excellent bending ability, which also makes the bending property of the final flexible display product unaffected. . Since the thickness of the glass substrate is very thin, the weight gain of the product is small, and the portable characteristics of the product are not affected.
- the flexible display device of the present embodiment is substantially the same as the flexible display device of Embodiment 1, except that a glass substrate is attached to the other side of the plastic substrate 1, that is, the surface of the flexible display device 2, thereby achieving a better package. And better water and oxygen barrier.
- the flexible display of this embodiment The display device comprises: a plastic substrate 1, a flexible display device 2 formed on the surface of the plastic substrate 1, and a glass substrate 3a on the side of the plastic substrate 1 facing away from the flexible display device 2 and on the side of the flexible display device 2 facing away from the plastic substrate 1. Glass substrate 3b.
- the plastic substrate 1 and the glass substrate 3b are attached after the step S3, or the surface of the flexible display device 2 and the glass substrate 3b are attached after the step S2, and then the step S3 is performed, that is, the plastic substrate 1 is separated from the flexible One side of the display device 2 is attached to the glass substrate 3a.
- the attachment of the plastic substrate 1 and the glass substrate 3b can be achieved by means of an adhesive or atmospheric pressure.
- the flexible display device of the present embodiment has better water and oxygen barrier properties with respect to Example 1 due to the protection of a plurality of glass substrates.
- the flexible display device in this embodiment is substantially the same as the flexible display device of Embodiment 1 or Embodiment 2 except that the glass substrate 3 or 3a, 3b in the flexible display device of Embodiment 1 or Embodiment 2 is replaced with a metal foil. 5, the better water and oxygen barrier properties are also achieved, and the preparation process is similar to that of the embodiment 1 or the embodiment 2, and details are not described herein again.
- a flexible display device obtained by replacing the glass substrate 3 in the flexible display device of Embodiment 1 with the metal foil 5 is shown in FIG.
- the flexible display device in this embodiment is substantially the same as the flexible display device of Embodiments 1-3, except that the single-layer glass substrate 3 and/or the metal foil 5 are replaced with a multilayer glass substrate and/or a metal foil. That is, a multilayered glass substrate, or a multilayer metal foil, or a multilayer substrate in which a glass substrate and a metal foil are laminated.
- the flexible display device comprises a plastic substrate 1, and a flexible substrate 10 and a flexible substrate 20 on both sides of the plastic substrate 1, wherein the flexible substrate 10 comprises a glass substrate 3a and a metal foil 5a.
- the plastic substrate 1 is attached to the metal foil 5a
- the glass substrate 3a is attached to the metal foil 5a.
- the flexible substrate 20 includes a glass substrate 3b and a metal foil 5b.
- the surface of the flexible display device 2 is attached with a glass substrate 3b attached to the side of the glass substrate 3b facing away from the flexible display device 2.
- the flexible display device shown in Fig. 5 can be fabricated by any of the following fabrication methods.
- the flexible substrate 10 and the flexible substrate 20 are separately fabricated.
- the plastic substrate 1 is attached to the flexible substrate 10 and the flexible substrate 20, respectively.
- attaching the plastic substrate 1 to the flexible substrate 10 includes two methods:
- step S3 the plastic substrate 1 may be attached to one surface of the metal foil 5a, and then the glass substrate 3a may be attached to the other surface of the metal foil 5a. If more flexible substrates are included, Attached to the outer surface of the glass substrate 3a (the side away from the plastic substrate 1;). 2. The plurality of flexible substrates (the glass substrate 3a and the metal foil 5a) are sequentially attached together to form the flexible substrate 10, and then the step S3 is performed to attach the plastic substrate 1 to the metal foil 5a.
- the manner in which the flexible substrate 20 is attached to the other side of the plastic substrate 1 and the manner in which the plastic substrate 1 and the flexible substrate 10 are attached are the same, and will not be described herein. Further, the order in which the plastic substrate 1 is attached to the flexible substrate 10 or the flexible substrate 20 is not limited.
- a plurality of glass substrates and/or metal foils may be sequentially attached to both sides of the plastic substrate 1 on which the flexible display device 2 is fabricated, but the glass substrates 3a and 3b and the metal are attached to both sides of the plastic substrate 1.
- the order of the foils 5a and 5b is not limited.
- It can be attached by means of adhesive or atmospheric pressure when attached.
- the flexible display device of this embodiment encapsulates more flexible substrates outside the flexible display device, and has better water and oxygen barrier properties than the first to third embodiments.
- the flexible display device of this embodiment is a flexible display device obtained by adding an antistatic layer to any of the flexible display devices of the first to fourth embodiments.
- 6 shows a modified flexible display device based on the flexible display device of Embodiment 1, as shown in FIG. 6, the flexible display device includes: a plastic substrate 1, a flexible display device 2 formed on a surface of the plastic substrate 1, and driving the A driving circuit (not shown) of the flexible display device is disposed on the glass substrate 3 on the side of the plastic substrate 1 facing away from the flexible display device 2 and the antistatic layer 4 between the glass substrate 3 and the plastic substrate 1.
- the antistatic layer 4 may also be provided on the upper surface of the glass substrate 3.
- the flexible display device of this embodiment may also include two antistatic layers 4 respectively located between the plastic substrate 1 and the glass substrate 3 and the upper surface of the glass substrate 3.
- the antistatic layer 4 includes: ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IGZO (indium gallium zinc oxide), nano silver, and a single layer film formed by carbon nanotubes. Or a multilayer film formed from the above materials.
- the antistatic layer 4 is better able to achieve electrostatic shielding for better display.
- FIG. 7 is a flowchart showing a manufacturing process of a typical manufacturing method of the flexible display device of FIG. 6.
- the manufacturing process is similar to the manufacturing process in Embodiment 1, except that step S2.3 is further included before step S3:
- An antistatic layer 4 is deposited on the surface of the glass substrate 3 facing the plastic substrate 1.
- the plastic substrate 1 is attached to the glass substrate 3 on which the antistatic layer 4 is deposited.
- the flexible display device manufacturing process shown in FIG. 6 is only for the case where the driving circuit is not integrated on the flexible display device, and the steps S2 and S3 can be reversed.
- the driving circuit is integrated on the flexible display device, the attached driving power can be omitted.
- the process of the road, that is, the step S2 can be omitted (of course, it is necessary to make the drive circuit together while making the flexible display device).
- Fig. 8 shows a modified flexible display device based on the flexible display device of Embodiment 4.
- the flexible display device further includes an antistatic layer 4 between the flexible display device 2 and the glass substrate 3b.
- the antistatic layer 4 of the flexible display device may also be located between and/or on a certain layer of the flexible substrate on both sides of the plastic substrate 1 on which the flexible display device 2 is fabricated, or may include a plurality of antistatic layers 4. Only two flexible substrates 10 and 20 are shown in Fig. 8, but the embodiment is not limited to two flexible substrates.
- the flexible display device of FIG. 8 is manufactured as follows:
- the antistatic layer 4 is formed between the flexible display device 2 and the flexible substrate 20 if the antistatic layer 4 is formed between the flexible substrate (glass substrate 3b) that is in close contact with the flexible display device 2 and the flexible display device 2, as long as it is guaranteed
- the antistatic layer 4 may be deposited on the glass substrate 3b before the flexible display device 2 is attached to the glass substrate 3b.
- an antistatic layer is formed.
- the order of 4 and the order in which the flexible display device 2 is attached to the glass substrate 3b are not limited.
- the antistatic layer 4 is formed between the flexible display device 2 and the flexible substrate 10 if the antistatic layer 4 is formed between the flexible substrate (metal foil 5a) which is in close contact with the plastic substrate 1 and the plastic substrate 1, as long as the flexible display is ensured
- the antistatic layer 4 may be deposited on the metal foil 5a or the plastic substrate 1 before the device 2 is attached to the glass substrate 3b. If the antistatic layer 4 is formed on other layers between the plastic substrate 1 and the flexible substrate 10, antistatic is prepared.
- the order of the layers 4 and the order in which the plastic substrate 1 is attached to the glass substrate 3b is not limited.
- the present embodiment increases the antistatic layer 4 with respect to the flexible display device of any of the embodiments 1 to 4, effectively preventing static electricity generated between the flexible display device 2 and the flexible substrate on both sides thereof, in particular, It is used in a touch-type flexible display device to avoid the occurrence of static electricity when a finger is touched, resulting in a poor display effect.
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Abstract
一种柔性显示装置,包括:第一柔性基板、形成于第一柔性基板表面的柔性显示器件(2),以及位于第一柔性基板上背离柔性显示器件(2)一侧的第二柔性基板,其中该第一柔性基板为塑料基板(1)。该柔性显示装置通过额外的柔性基板对柔性显示器件(2)进行封装,尤其是采用超薄玻璃基板(3)对形成在塑料基板(1)上的柔性显示器件(2)进行封装,使得柔性显示装置在保持柔性可弯曲的基础上具有更好的隔水隔氧性,且不易破损。
Description
柔性显示装置及其制作方法 技术领域
本公开涉及显示技术领域, 特别涉及一种柔性显示装置及其制作方法。 背景技术
随着柔性显示技术的发展, 更加接近传统显示模式的柔性显示产品很快 也将走入寻常百姓家。 由于柔性显示其本身特有的可弯曲的特点, 决定了它 会有很多特殊的用户体验。
可以实现柔性显示的显示模式和相关器件主要有, 液晶显示器、 有机电 致发光显示器、 电子纸、 电泳式显示器、 触摸屏、 微机电系统
( Micro-Electro-Mechanical Systems, MEMS )、 薄膜光伏电池。 其中有机电 致发光显示器、 电子纸、 电泳式显示器和薄膜光伏电池对水、 氧特别敏感, 水、 氧会导致器件性能降低或者失效。
目前对于柔性显示器件的基板主要有塑料、 超薄玻璃、 金属箔三类。 塑 料基板及类似塑料的材料形成的基板具有透明、 柔软、 不易破损的优点, 但 是隔水、 隔氧能力较差; 超薄玻璃基板当经过边缘激光切割后具有透明、 柔 软、 隔水隔氧性能优越的优点, 但是如果直接在其上进行器件制备后很难再 用激光切割(容易切碎), 只能釆用机械切割的方式切割, 但是用机械方法切 割后的边缘比较粗糙, 弯曲性能大大降低; 金属箔基板具有隔水隔氧性能优 越的优点, 但是弯曲能力有限, 而且不透明。 因此目前没有哪一种基板能够 完美承担柔性显示基板的功能。 发明内容
本公开使得柔性显示装置在保持柔性可弯曲特性的基础上具有更好的 隔水隔氧性, 且不易破损。 另外, 使在塑料基板及类似塑料的材料形成的基 板上形成的柔性显示器件具有更好的隔水隔氧性能。
本公开提供了一种柔性显示装置, 其包括: 第一柔性基板、 形成于所述 第一柔性基板表面的柔性显示器件, 还包括: 位于所述第一柔性基板上背离 所述柔性显示器件一侧的第二柔性基板。 所述第一柔性基板为塑料基板。
在一个示例中, 所述第二柔性基板包括: 玻璃基板的单层基板、 金属箔
的单层基板或玻璃基板和金属箔层叠的多层基板。
在一个示例中, 所述的柔性显示装置还包括位于所述柔性显示器件上背 离所述第一柔性基板一侧的第三柔性基板。
在一个示例中, 所述第三柔性基板包括: 玻璃基板的单层基板、 金属箔 的单层基板或玻璃基板和金属箔层叠的多层基板。
在一个示例中, 所述的柔性显示装置还包括位于第三柔性基板和所述柔 性显示器件之间, 或位于所述第三柔性基板两层之间, 或位于第三柔性基板 上背离所述柔性显示器件的最外表面的第一防静电层。
在一个示例中, 还包括位于所述第一柔性基板和所述第二柔性基板之 间, 或位于所述第二柔性基板两层之间, 或位于所述第二柔性基板上背离第 一柔性基板的最外表面的第二防静电层。
在一个示例中,所述玻璃基板为厚度小于等于 0.1mm的边缘光滑的玻璃 基板。
在一个示例中, 所述塑料基板的材料包括: 聚碳酸酯、 聚对苯二曱酸乙 二醇酯、 聚酰亚胺、 聚芳酯、 聚酸砜、 聚萘二曱酸乙二醇酯或纤维强化塑料 的一种或两种以上的组合。
在一个示例中, 所述柔性显示器件包括: 液晶显示器、 有机电致发光显 示器、 电子纸、 电泳式显示器、 触摸屏、 MEMS、 薄膜光伏电池中的一种或 两种以上的组合。
在一个示例中, 所述的柔性显示装置还包括: 直接形成于所述第一柔性 基板上所述柔性显示器件的显示区域周边的驱动所述柔性显示器件的驱动电 路, 或者, 贴附于所述第一柔性基板上的驱动所述柔性显示器件的外置驱动 电路。
本公开还提供了一种柔性显示装置的制作方法, 包括以下步骤: 在第一 柔性基板上制作柔性显示器件; 将制作有所述柔性显示器件的第一柔性基板 背离所述柔性显示器件的一面贴附在第二柔性基板上。
在一个示例中, 将制作有所述柔性显示器件的第一柔性基板背离所述柔 性显示器件的一面贴附在所述第二柔性基板上具体为: 通过粘结剂将所述第 一柔性基板贴附在所述第二柔性基板上, 或依靠大气压将所述第一柔性基板 贴附在所述第二柔性基板上。
在一个示例中, 在所述柔性显示器件上贴附驱动电路之后还包括: 在所
述柔性显示器件的表面贴附包括: 玻璃基板、 金属箔的单层基板或两者之一 或共同层叠的多层基板, 以形成第三柔性基板。
在一个示例中, 在形成所述第三柔性基板时还包括: 在所述第三柔性基 板的两层间或表面制作第一防静电层。
在一个示例中, 所述第二柔性基板包括: 玻璃基板、 金属箔的单层基板 或两者之一或共同层叠的多层基板。
在一个示例中, 将制作有所述柔性显示器件的第一柔性基板背离所述柔 性显示器件的一面贴附在所述第二柔性基板上之前还包括步骤: 在所述第二 柔性基板面向所述第一柔性基板的表面上或在所述第一柔性基板背离所述柔 性显示器件的表面制作第二防静电层;
或者, 将制作有所述柔性显示器件的第一柔性基板背离所述柔性显示器 件的一面贴附在所述第二柔性基板上之前或之后还包括步骤: 在所述第二柔 性基板的两层之间或背离所述第一柔性基板的最外表面上制作第二防静电 层。
在一个示例中,所述玻璃基板为厚度小于等于 0.1mm且边缘光滑的玻璃 基板。
在一个示例中, 第一柔性基板包括: 塑料基板。
在一个示例中, 所述塑料基板的材料包括: 聚碳酸酯、 聚对苯二曱酸乙 二醇酯、 聚酰亚胺、 聚芳酯、 聚酸砜、 聚萘二曱酸乙二醇酯或纤维强化塑料 的一种或两种以上的组合。
在一个示例中, 所述柔性显示器件包括: 液晶显示器、 有机电致发光显 示器、 电子纸、 电泳式显示器、 触摸屏、 MEMS、 薄膜光伏电池中的一种或 两种以上的组合。
在一个示例中, 所述在第一柔性基板上制作柔性显示器件, 还包括, 同 时制作驱动所述柔性显示器件的驱动电路;
或者,在所述在第一柔性基板上制作柔性显示器件的步骤之后,还包括, 在所述柔性显示器件上贴附驱动电路;
或者, 在所述将制作有所述柔性显示器件的第一柔性基板背离所述柔性 显示器件的一面贴附在第二柔性基板上的步骤之后, 还包括, 在所述柔性显 示器件上贴附驱动电路。
本公开通过额外的柔性基板(第二柔性基板)对柔性显示器件进行封装,
尤其是釆用超薄玻璃基板或金属箔对形成在塑料基板上的柔性显示器件进行 封装,使得柔性显示装置在保持柔性可弯曲的基础上具有更好的隔水隔氧性, 且不易破损。 附图说明
为了更清楚地说明本公开或现有技术中的技术方案, 下面将对本公开提 供的技术方案或现有技术描述中所需要使用的附图作简单地介绍, 显而易见 地, 下面描述中的附图仅仅是本公开的技术方案的部分具体实施方式图示说 明, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以 根据这些附图获得其他的附图。
图 1是本公开实施例 1的一种柔性显示装置结构示意图;
图 2是制作图 1中柔性显示装置的一种典型的制作方法的流程图; 图 3是本公开实施例 2的一种柔性显示装置结构示意图;
图 4是本公开实施例 3的一种柔性显示装置结构示意图;
图 5是本公开实施例 4的一种柔性显示装置结构示意图;
图 6是本公开实施例 5的一种柔性显示装置结构示意图;
图 7是制作图 6中柔性显示装置的一种典型的制作方法的流程图; 图 8是本公开实施例 5的另一种柔性显示装置结构示意图。 具体实施方式
下面将结合本公开实施例中的附图, 对本公开实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本公开一部分实施例, 而 不是全部的实施例。 基于本公开中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例, 都属于本公开保护的范围。
下面结合附图和实施例, 对本公开的具体实施方式作进一步详细描述。 以下实施例用于说明本公开, 但不用来限制本公开的范围。
实施例 1
如图 1所示, 本实施例的柔性显示装置包括: 塑料基板 1、 形成于塑料 基板 1表面的柔性显示器件 2, 以及位于塑料基板 1上背离柔性显示器件 2 一侧的玻璃基板 3。 其中, 本公开中的塑料基板指的是由塑料材料或者性能
上类似于塑料的材料形成的基板。 本公开中的玻璃基板 3为超薄玻璃基板, 具体指厚度小于等于 0.1mm的玻璃基板,在实施例中该超薄玻璃基板需要为 边缘光滑的玻璃基板, 可以通过对玻璃基板边缘进行激光切割的方式来获得 光滑的边缘, 从而使得玻璃基板 3具有常规弯曲后不致破损的性能。
进一步地, 本实施例的柔性显示装置还包括, 驱动所述柔性显示器件的 驱动电路(图中未示出)。 所述驱动电路, 可以为直接形成于所述第一柔性基 板上所述柔性显示器件的显示区域周边的驱动所述柔性显示器件的驱动电 路, 类似于现在的 GOA ( Gate Driver on Array )模式, 不同之处在于在本实 施例中驱动所述柔性显示器件的所有驱动电路(比如数据线驱动、 栅极驱动 等) 均集成于第一柔性基板上(可以在制作柔性显示器件的同时一起制作完 的驱动所述柔性显示器件的外置驱动电路(即)。外置驱动电路可以为驱动电 路的全部或部分, 而其他的驱动电路可直接集成在柔性显示器件上。 例如可 以在第一柔性基板上只贴附数据线驱动电路, 而栅极驱动电路则以 GOA模 式形成在柔性显示器件上。
本公开实施例的柔性显示器件 2包括: 液晶显示器、 有机电致发光显示 器、 电子纸、 电泳式显示器、 触摸屏、 MEMS、 薄膜光伏电池中的一种或两 种以上的组合, 即同一柔性显示器件上可以包括上述两种以上的显示器件共 同实现显示。 塑料基板 1的材料包括聚碳酸酯、 聚对苯二曱酸乙二醇酯、 聚 酰亚胺、 聚芳酯、 聚酸砜、 聚萘二曱酸乙二醇酯或纤维强化塑料的一种或两 种以上的组合。
本实施例的柔性显示装置的一种典型的制作方法的制作流程如图 2 所 示, 包括:
步骤 S1 , 首先在塑料基板 1上制作柔性显示器件 2, 具体通过反复薄膜 沉积, 掩膜曝光, 刻蚀的方法或者连续印刷的方法在塑料基板 1上形成柔性 显示器件 2。 该步骤利用塑料基板 1 不易破损的特点, 实现柔性显示器件 2 制备过程中的高良品率。 通过塑料基板 1的不同形状, 可以通过卷对卷(roll to roll ) 的方式进行生产, 也可以通过单张塑料基板一张张(sheet by sheet ) 地进行加工生产。 如果釆用卷对卷的加工方式能够大大提升产能, 从而降低 生产成本, 这也是常规玻璃、 金属箔较难实现的加工方式。
步骤 S2,在柔性显示器件 2上贴附驱动电路,该驱动电路用于驱动柔性
显示器件 2进行显示。
步骤 S3 , 将制作有柔性显示器件 2的塑料基板 1 背离柔性显示器件 2 的一面贴附在玻璃基板 3上。
需要说明的是, 以上柔性显示装置制作流程, 仅针对驱动电路没有被集 成在柔性显示器件之上的情况, 且步骤 S2与步骤 S3可以调换顺序。 而对于 驱动电路被集成在柔性显示器件之上的情况, 则可以省略贴附驱动电路的过 程, 即可以省略步骤 S2 (当然, 需要在制作柔性显示器件的同时一并制作驱 动电路)。
具体可釆用以下任一种方式将塑料基板 1贴附在玻璃基板 3上。
一、 通过粘结剂将制作有柔性显示器件 2的塑料基板 1贴附在玻璃基板
3上。 粘结剂可将塑料基板 1牢固地粘在玻璃基板 3上。 例如釆用裱机将塑 料基板 1与玻璃基板 3进行贴附。 为了防止粘结剂污染裱机的压辊, 从而影 响后续贴附产品的平整性, 优选地可以在贴附过程中在靠近压辊的位置垫若 干张塑料薄膜或纸张。 在贴附工序完成后, 再将保护的塑料薄膜或者纸张取 下, 进行后续工序。 这样提高了柔性显示器件连续贴附工序的良品率和产品 性能稳定性。
二、 依靠大气压将塑料基板 1紧压在玻璃基板 3上, 相比第一种方式节 省了材料。
本实施例中步骤 S2和 S3的顺序可以交换, 只要制备有柔性显示器件 2 的塑料基板 1上与贴附驱动电路的连接点依然暴露在外面, 可以在上贴附驱 动电路元件, 就可以进行贴附驱动电路。
本实施例的柔性显示装置可以通过玻璃基板实现隔水隔氧的封装作用, 从而提升产品的信赖性。 通过塑料基板不易破损的特点, 实现柔性显示器件 生产过程中的高产能和高良品率。 由于柔性显示器件在塑料基板上制作, 在 超薄玻璃基板经过激光切割后不再进行机械切割, 因此超薄玻璃基板保持了 优良的弯曲能力, 这也使得最终柔性显示产品的弯曲特性不受影响。 由于玻 璃基板厚度很薄, 因此对产品增重很小, 不影响其产品的便携特性。
实施例 2
本实施例的柔性显示装置与实施例 1的柔性显示装置基本相同, 除了在 塑料基板 1的另一侧, 即柔性显示器件 2的表面还贴附有一层玻璃基板, 从 而实现了更好的封装及更好的隔水隔氧性。 如图 3所示, 本实施例的柔性显
示装置包括: 塑料基板 1、 形成于塑料基板 1表面的柔性显示器件 2、 以及位 于塑料基板 1上背离柔性显示器件 2—侧的玻璃基板 3a以及位于柔性显示器 件 2背离塑料基板 1一侧的玻璃基板 3b。
制作时, 在步骤 S3之后将塑料基板 1和玻璃基板 3b进行贴附, 或者在 步骤 S2之后将柔性显示器件 2的表面和玻璃基板 3b进行贴附, 再执行步骤 S3 , 即将塑料基板 1背离柔性显示器件 2的一面贴附在玻璃基板 3a上。可釆 用粘结剂或大气压的方式实现塑料基板 1和玻璃基板 3b的贴附。
本实施例的柔性显示装置由于多一层玻璃基板的保护, 相对于实施例 1 具有更好的隔水隔氧性。
实施例 3
本实施例中的柔性显示装置与实施例 1或实施例 2的柔性显示装置基本 相同, 除了将实施例 1或实施例 2中的柔性显示装置中的玻璃基板 3或 3a、 3b替换成金属箔 5 , 同样达到了较好的隔水隔氧性, 其制备流程和实施例 1 或实施例 2类似, 此处不再赘述。 图 4中示出了实施例 1中的柔性显示装置 中的玻璃基板 3替换成金属箔 5得到的柔性显示装置
实施例 4
本实施例中的柔性显示装置与实施例 1-3的柔性显示装置基本相同, 除 了将单层的玻璃基板 3和 /或金属箔 5替换为多层玻璃基板和 /或金属箔。 即, 多层的玻璃基板, 或多层的金属箔, 或玻璃基板与金属箔层叠的多层基板。
如图 5所示, 柔性显示装置包括塑料基板 1、 以及位于塑料基板 1的两 侧的柔性基板 10和柔性基板 20, 其中, 柔性基板 10包括玻璃基板 3a和金 属箔 5a。 塑料基板 1贴附在金属箔 5a上, 金属箔 5a上贴附有玻璃基板 3a。 柔性基板 20包括玻璃基板 3b和金属箔 5b。 柔性显示器件 2的表面贴附有玻 璃基板 3b, 金属箔 5b上贴附在玻璃基板 3b背离柔性显示器件 2的一面。
如图 5所示的柔性显示装置可以釆用下述的任一制作方法制作。
一、 先分别制作柔性基板 10和柔性基板 20。 再将塑料基板 1贴附分别 在柔性基板 10和柔性基板 20上。 例如, 将塑料基板 1贴附在柔性基板 10 上包括两种方式:
1、 在步骤 S3时, 可以是先将塑料基板 1贴附在金属箔 5a的一面, 之 后再将玻璃基板 3a贴附在金属箔 5a的另一面, 若还包括更多的柔性基板, 则依次贴附在玻璃基板 3a的外侧表面上(远离塑料基板 1的一侧;)。
2、 先将多个柔性基板(玻璃基板 3a和金属箔 5a ), 依次贴附在一起, 形成柔性基板 10, 再执行步骤 S3 , 将塑料基板 1贴附在金属箔 5a上。
在塑料基板 1的另一侧贴附柔性基板 20的方式和塑料基板 1与柔性基 板 10的贴附方式相同, 此处不再赘述。 另外, 塑料基板 1与柔性基板 10或 柔性基板 20贴附的顺序不受限制。
二、 可在步骤 S2之后在制作有柔性显示器件 2的塑料基板 1的两侧依 次贴附多个玻璃基板和 /或金属箔, 但在塑料基板 1两侧贴附玻璃基板 3a和 3b及金属箔 5a和 5b的顺序不受限制。
贴附时可釆用粘结剂或大气压的方式进行贴附。
本实施例中的柔性显示装置在柔性显示器件外侧封装了更多的柔性基 板, 相对于实施例 1~3具有更好的隔水隔氧性。
实施例 5
本实施例中的柔性显示装置是将实施例 1~4中的任一柔性显示装置中增 加防静电层得到的柔性显示装置。 图 6示出了基于实施例 1的柔性显示装置 改进的柔性显示装置, 如图 6所示, 该柔性显示装置包括: 塑料基板 1、 形 成于塑料基板 1表面的柔性显示器件 2及驱动所述柔性显示器件的驱动电路 (图中未示出), 位于塑料基板 1上背离柔性显示器件 2一侧的玻璃基板 3 以及位于玻璃基板 3和塑料基板 1之间的防静电层 4。 防静电层 4还可以设 置于玻璃基板 3的上表面上。 本实施例的柔性显示装置也可以包括分别位于 塑料基板 1和玻璃基板 3之间及玻璃基板 3的上表面的两层防静电层 4。 防 静电层 4包括: ITO (氧化铟锡 Indium Tin Oxide )、 IZO (氧化铟辞 Indium Zinc Oxide )、 IGZO (氧化铟镓辞 indium gallium zinc oxide )、 纳米银、 碳纳米管形 成的单层薄膜, 或以上材料形成的多层薄膜。 防静电层 4能够更好地实现静 电屏蔽, 以到达更好地显示效果。
图 7示出了图 6中的柔性显示装置的一种典型的制作方法的制作流程, 该制作流程和实施例 1 中的制作流程类似, 不同的是在步骤 S3之前还包括 步骤 S2.3: 在玻璃基板 3面向塑料基板 1的表面上沉积一层防静电层 4。 步 骤 S3中将塑料基板 1贴附在沉积有防静电层 4的玻璃基板 3上。
需要说明的是, 图 6所示的柔性显示装置制作流程, 仅针对驱动电路没 有被集成在柔性显示器件之上的情况, 且步骤 S2与步骤 S3可以调换顺序。 而对于驱动电路被集成在柔性显示器件之上的情况, 则可以省略贴附驱动电
路的过程, 即可以省略步骤 S2 (当然, 需要在制作柔性显示器件的同时一并 制作驱动电路)。
图 8示出了基于实施例 4的柔性显示装置改进的柔性显示装置。 如图 8 所示,该柔性显示装置还包括在柔性显示器件 2和玻璃基板 3b之间的防静电 层 4。 该柔性显示装置的防静电层 4也可以位于在制作有柔性显示器件 2的 塑料基板 1两侧的柔性基板的某两层之间和 /或表面上,或包括多层防静电层 4。图 8中只示出了两层柔性基板 10和 20,但本实施例不限于两层柔性基板。
图 8的柔性显示装置的制作方法如下:
在柔性显示器件 2和柔性基板 20之间制作防静电层 4时, 若是在紧贴 柔性显示器件 2的柔性基板 (玻璃基板 3b )和柔性显示器件 2之间制作防静 电层 4, 只要保证在柔性显示器件 2贴附在玻璃基板 3b之前在玻璃基板 3b 上沉积防静电层 4即可,若在柔性显示器件 2和柔性基板 20之间的其它层制 作防静电层 4时, 制作防静电层 4的顺序与柔性显示器件 2贴附在玻璃基板 3b的顺序不受限制。
在柔性显示器件 2和柔性基板 10之间制作防静电层 4时, 若是在紧贴 塑料基板 1的柔性基板(金属箔 5a )和塑料基板 1之间制作防静电层 4, 只 要保证在柔性显示器件 2贴附在玻璃基板 3b之前在金属箔 5a或塑料基板 1 上沉积防静电层 4即可,若在塑料基板 1和柔性基板 10之间的其它层制作防 静电层 4时,制作防静电层 4的顺序与塑料基板 1贴附在玻璃基板 3b的顺序 不受限制。
本实施例相对于实施例 1~4中的任一实施例的柔性显示装置增加了防静 电层 4,有效地防止了柔性显示器件 2和其两侧的柔性基板之间产生的静电, 尤其是用于触摸式柔性显示装置, 避免了手指触摸时产生静电导致不好的显 示效果。
以上实施方式仅用于说明本发明, 而并非对本发明的限制, 有关技术领 域的普通技术人员, 在不脱离本发明的精神和范围的情况下, 还可以做出各 种变化和变型, 因此所有等同的技术方案也属于本发明的范畴, 本发明的专 利保护范围应由权利要求限定。
Claims
1、 一种柔性显示装置, 包括: 第一柔性基板、 形成于所述第一柔性基 板表面的柔性显示器件, 位于所述第一柔性基板上背离所述柔性显示器件一 侧的第二柔性基板, 所述第一柔性基板为塑料基板。
2、 如权利要求 1 所述的柔性显示装置, 其特征在于, 所述第二柔性基 板包括: 玻璃基板的单层基板、 金属 的单层基板或玻璃基板和金属 层叠 的多层基板。
3、 如权利要求 1或 2所述的柔性显示装置, 其特征在于, 还包括位于 所述柔性显示器件上背离所述第一柔性基板一侧的第三柔性基板。
4、 如权利要求 3 所述的柔性显示装置, 其特征在于, 所述第三柔性基 板包括: 玻璃基板的单层基板、 金属 的单层基板或玻璃基板和金属 层叠 的多层基板。
5、 如权利要求 1至 4任一所述的柔性显示装置, 其特征在于, 还包括 位于第三柔性基板和所述柔性显示器件之间, 或位于所述第三柔性基板两层 之间, 或位于第三柔性基板上背离所述柔性显示器件的最外表面的第一防静 电层。
6、 如权利要求 5所述的柔性显示装置, 其特征在于, 还包括位于所述 第一柔性基板和所述第二柔性基板之间,或位于所述第二柔性基板两层之间, 或位于所述第二柔性基板上背离第一柔性基板的最外表面的第二防静电层。
7、 如权利要求 2至 6任一所述的柔性显示装置, 其特征在于, 所述玻 璃基板为厚度小于等于 0.1mm的边缘光滑的玻璃基板。
8、 如权利要求 1至 7任一所述的柔性显示装置, 其特征在于, 所述塑 料基板的材料包括: 聚碳酸酯、 聚对苯二曱酸乙二醇酯、 聚酰亚胺、 聚芳酯、 聚酸砜、 聚萘二曱酸乙二醇酯或纤维强化塑料的一种或两种以上的组合。
9、 如权利要求 1至 8任一所述的柔性显示装置, 其特征在于, 所述柔 性显示器件包括: 液晶显示器、 有机电致发光显示器、 电子纸、 电泳式显示 器、 触摸屏、 MEMS、 薄膜光伏电池中的一种或两种以上的组合。
10、如权利要求 1至 8任一所述的柔性显示装置,其特征在于,还包括: 直接形成于所述第一柔性基板上所述柔性显示器件的显示区域周边的驱动所 述柔性显示器件的驱动电路, 或者, 贴附于所述第一柔性基板上的驱动所述 柔性显示器件的外置驱动电路。
11、 一种柔性显示装置的制作方法, 其特征在于, 包括以下步骤: 在第一柔性基板上制作柔性显示器件;
将制作有所述柔性显示器件的第一柔性基板背离所述柔性显示器件的 一面贴附在第二柔性基板上 ,
所述第一柔性基板为塑料基板。
12、 如权利要求 11 所述的柔性显示装置的制作方法, 其特征在于, 将 制作有所述柔性显示器件的第一柔性基板背离所述柔性显示器件的一面贴附 在所述第二柔性基板上具体为: 通过粘结剂将所述第一柔性基板贴附在所述 第二柔性基板上, 或依靠大气压将所述第一柔性基板贴附在所述第二柔性基 板上。
13、 如权利要求 11 所述的柔性显示装置的制作方法, 其特征在于所述 柔性显示装置为如权利要求 1至 10中任一项的柔性显示装置。
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