CN108227281B - Stretchable display device and preparation method thereof - Google Patents
Stretchable display device and preparation method thereof Download PDFInfo
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- CN108227281B CN108227281B CN201810054557.1A CN201810054557A CN108227281B CN 108227281 B CN108227281 B CN 108227281B CN 201810054557 A CN201810054557 A CN 201810054557A CN 108227281 B CN108227281 B CN 108227281B
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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Abstract
The embodiment of the invention provides a stretchable display device and a preparation method thereof, wherein the stretchable display device comprises a plurality of pixel modules which are independent to each other to form an island and are electrically connected with each other; and a plurality of functional film layer units which are stacked on the surfaces of the plurality of pixel modules, wherein each functional film layer unit correspondingly covers the surface of one pixel module. The stretchable display device provided by the embodiment of the invention achieves the purpose of improving other performances (such as display performance or packaging performance) of the stretchable display device on the basis of not influencing the scalability performance or bendable performance of the stretchable display device by setting the mode that each functional film layer unit correspondingly covers one pixel module.
Description
Technical Field
The invention relates to the technical field of display, in particular to a stretchable display device and a preparation method of the stretchable display device.
Background
With the continuous development of electronic display technology, users have increasingly demanded display devices of electronic devices, and stretchable display devices, which are one of the important development directions of display devices of electronic devices, have attracted more and more attention. Fig. 1 is a schematic top view of a stretchable display device in the prior art. As shown in fig. 1, the stretchable display device in the prior art includes a stretchable base film 1 and a plurality of traces 3 arranged on the stretchable base film 1 in a crossing manner, and includes a plurality of pixel modules 2 arranged at the crossing points of the traces 3, that is, the pixel modules 2 are connected to each other by the traces 3. The conventional stretchable display device realizes the characteristics of stretchability, bendability, and the like of the stretchable display device by means of the gap between the adjacent pixel modules 2.
In the actual manufacturing process, in order to optimize the display performance of the stretchable display device, it is often necessary to add some functional film layer units to the existing stretchable display device. However, the added functional film layer unit may affect the stretchable or bendable characteristic of the stretchable display device.
Disclosure of Invention
In view of this, embodiments of the present invention provide a stretchable display device and a method for manufacturing the stretchable display device, so as to solve the problem that adding a functional film unit in an existing stretchable display device affects the stretchable or bendable property of the stretchable display device.
In a first aspect, an embodiment of the present invention provides a stretchable display device, including a plurality of pixel modules, each independently forming an island and electrically connected to each other; and a plurality of functional film layer units which are stacked on the surfaces of the plurality of pixel modules, wherein each functional film layer unit correspondingly covers the surface of one pixel module.
In an embodiment of the invention, the functional film layer unit comprises a polarizing layer and/or an encapsulation layer and/or a hardening layer.
In one embodiment of the present invention, the functional film unit is a polarizing layer, and the polarizing layer includes 1/4 λ glass sheet layer and aqueous liquid crystal layer stacked in layers.
In an embodiment of the invention, the functional film layer unit is a polarizing layer, and the polarizing layer includes 1/4 λ glass sheet layer and polyvinyl alcohol layer which are stacked.
In an embodiment of the invention, the pixel module displays one sub-pixel.
In an embodiment of the present invention, the stretchable display device further includes a stretchable base film, and the plurality of pixel modules are stacked on a surface of the stretchable base film.
In a second aspect, another embodiment of the present invention provides a stretchable display device manufacturing method, including preparing or providing a plurality of pixel modules each independently forming an island and electrically connected to each other; preparing functional film layer units on the surfaces of the pixel modules; and etching the functional film layer units into a plurality of functional film layer units respectively and correspondingly covering the plurality of pixel modules along the gaps among the plurality of pixel modules.
In an embodiment of the invention, the exposure etching process is used to etch the functional film layer unit into a plurality of functional film layer units respectively covering the plurality of pixel modules.
In an embodiment of the invention, the functional film layer unit comprises a polarizing layer and/or an encapsulation layer and/or a hardening layer.
The stretchable display device provided by the embodiment of the invention achieves the purpose of improving other performances (such as display performance or packaging performance) of the stretchable display device on the basis of not influencing the scalability performance or bendable performance of the stretchable display device by setting the mode that each functional film layer unit correspondingly covers one pixel module.
Drawings
Fig. 1 is a schematic top view of a stretchable display device in the prior art.
Fig. 2 is a schematic top view of a stretchable display device according to a first embodiment of the present invention.
Fig. 3 is a schematic flow chart illustrating a method for manufacturing a stretchable display device according to a second embodiment of the present invention.
Fig. 4 is a schematic flow chart illustrating a detailed operation procedure of disposing a photoresist layer on a film layer to be manufactured and exposing and developing the photoresist layer based on a patterned substrate in the stretchable display device manufacturing method according to the second embodiment of the present invention.
Fig. 5a to 5f are schematic front view structural diagrams illustrating a stretchable display device according to a third embodiment of the present invention in a main state when a polarizing layer is prepared by using a stretchable display device preparation method.
Fig. 6a to 6j are schematic front view structural diagrams illustrating a stretchable display device according to a fourth embodiment of the present invention in a main state when a polarizing layer is prepared by using a stretchable display device preparation method.
Fig. 7 is a schematic flow chart illustrating a method for manufacturing a stretchable display device according to a fifth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic top view of a stretchable display device according to a first embodiment of the present invention. As shown in fig. 2, the stretchable display device according to the first embodiment of the present invention includes a stretchable base film 1 and a plurality of pixel modules 2 (i.e., the pixel modules 2 are independent from each other, and a gap exists between adjacent pixel modules 2) that are disposed on the stretchable base film 1 and are independent into islands, wherein the pixel modules 2 are connected to each other by a plurality of traces 3 that are arranged in a cross manner. In addition, a functional film layer unit 4 prepared by a stretchable display device preparation method adopting exposure etching is stacked above each pixel module 2.
It should be understood that the exposure-etched stretchable display device manufacturing method is a stretchable display device manufacturing method for manufacturing a film layer by using an exposure development operation and an etching operation.
Furthermore, it should be understood that the functional film layer unit 4 includes, but is not limited to, a polarizing layer and/or an encapsulation layer and/or a hardening layer, and the embodiment of the present invention is not limited thereto.
The stretchable display device according to the first embodiment of the present invention achieves the purpose of improving other properties (such as display properties or encapsulation properties) of the stretchable display device without affecting the stretchable performance of the stretchable display device by preparing the functional film layer units on the stretchable base film provided with the pixel modules each independently forming an island by using the method for preparing a stretchable display device by exposure etching.
It should be understood that the patterned substrate is a substrate having a plurality of protrusions with gaps between the protrusions.
Furthermore, it should be understood that, in the embodiment of the present invention, the stretchable base film 1 and the pixel modules 2 stacked on the stretchable base film 1 and independent from each other to form islands form a patterned substrate, and the patterned substrate realizes stretching or bending stress release of the patterned substrate by means of the gaps between the adjacent pixel modules 2, so as to realize the stretching or bending property of the patterned substrate. The specific size of the gap between adjacent pixel modules 2 may be set according to the density of the pixel modules 2, the size of the stretchable base film 1, the stretching amount of the stretchable base film 1, and other factors.
In an embodiment of the present invention, a specific size calculation method of the gap between the adjacent pixel modules 2 is as follows:
firstly, the number of pixel modules 2 in a rectangular display region (i.e., a stretched base film 1 region) with a diagonal length of 1 inch is set to m × n (m is the number of pixel modules 2 in the length direction, and n is the number of pixel modules 2 in the width direction), then the size of a single pixel module 2 is set to X × Y (X is the size in the length direction, and Y is the size in the width direction), and finally the specific size L × W of the gap between adjacent pixel modules 2 is calculated through the data (L is the size in the length direction, and W is the size in the width direction), and the specific calculation formula is as follows:
note that, operations such as etching and the like may also be performed on the functional film unit 4 based on the patterned substrate by using processing methods such as electroforming or laser micro-engraving, so as to sufficiently improve the adaptability and the application versatility of the stretchable display device provided in the embodiment of the present invention, which will not be described in detail herein.
Fig. 3 is a schematic flow chart illustrating a method for manufacturing a stretchable display device according to a second embodiment of the present invention. As shown in fig. 3, a method for manufacturing a stretchable display device according to a second embodiment of the present invention includes:
step 10: and laminating the film layer to be prepared on the patterned substrate.
It should be understood that the film to be prepared includes, but is not limited to, functional film units such as a polarizing layer and/or an encapsulation layer and/or a hardening layer, and embodiments of the present invention are not limited in this respect.
Step 20: and arranging a photoresist layer on the film layer to be prepared, and carrying out exposure and development operation on the photoresist layer based on the patterned substrate.
Fig. 4 is a schematic flow chart illustrating a detailed operation procedure of disposing a photoresist layer on a film layer to be manufactured and exposing and developing the photoresist layer based on a patterned substrate in the stretchable display device manufacturing method according to the second embodiment of the present invention. As shown in fig. 4, step 20 in the second embodiment of the present invention includes:
step 21: and coating photoresist on the film layer to be prepared to form a photoresist layer.
Step 22: and carrying out shielding or anti-shielding operation on the region to be removed of the photoresist layer based on the patterned substrate.
It should be understood that the photoresist may be divided into Positive (Positive Photo resist) and Negative (Negative) resists according to the characteristics of responding to ultraviolet light. Wherein, the characteristics of the positive photoresist responding to ultraviolet light are as follows: the photoresist is insoluble to the developing solution before exposure and soluble to the developing solution after exposure, so that the positive photoresist can be used for obtaining the same pattern as a mask plate shielding area; the characteristic of the negative glue responding to ultraviolet light is just opposite to that of the positive glue, and specifically comprises the following steps: the negative photoresist is soluble to the developing solution before exposure and insoluble to the developing solution after exposure, so that the negative photoresist can be used for obtaining the same pattern as the non-shielding area of the mask plate.
In step 22 of the embodiment of the present invention, when the adopted photoresist is a positive photoresist, a back-masking operation is performed on the region to be removed of the photoresist layer based on the patterned substrate; and when the adopted photoresist is negative photoresist, shielding the region to be removed of the photoresist layer based on the patterned substrate.
In addition, it should be understood that the determination of the region to be removed of the photoresist layer may be set according to the actual patterned substrate condition and the actual requirement, so as to sufficiently improve the adaptability and the application versatility of the stretchable display device manufacturing method provided by the embodiment of the present invention, which are not limited in this embodiment of the present invention.
In an embodiment of the present invention, the patterned substrate includes a stretchable base film and respective independent island-formed pixel modules stacked on the stretchable base film, and the region to be removed of the photoresist layer is set to a region where the photoresist layer covers a gap between the respective independent island-formed pixel modules. According to the embodiment of the invention, the region to be removed of the photoresist layer is set as the region of the photoresist layer covering the gap between the pixel modules of each independent island so as to provide a precondition for the subsequent etching operation based on the film layer to be prepared.
Step 23: and carrying out exposure and development operation on the photoresist layer.
It should be understood that steps 21 to 23 give a detailed implementation of the step of "disposing a photoresist layer on the film layer to be prepared and performing an exposure and development operation on the photoresist layer based on the patterned substrate" described in step 20, thereby providing a strong support for the specific implementation of the stretchable display device preparation method provided by the embodiment of the present invention.
Step 30: and etching the film layer to be prepared by the exposed and developed photoresist layer.
It should be understood that step 20 has implemented the process of exposing and developing the region of the photoresist layer to be removed, and therefore, the etching operation of the film layer to be prepared mentioned in step 30 is implemented on the basis of the removed region of the photoresist layer.
In addition, it should be understood that the etching solution used in the etching operation includes, but is not limited to, a dichloromethane solution or pure water, and other solutions capable of meeting the requirement of the etching operation may be used as the etching solution in the embodiment of the present invention, which is not described in detail again in the embodiment of the present invention.
Step 40: the photoresist layer is removed after the etching operation is completed.
In the practical application process, firstly, a film layer to be prepared is arranged on a graphical substrate in a laminated mode, then a photoresist layer is coated on the film layer to be prepared, the photoresist layer is exposed and developed based on the graphical substrate, finally, the film layer to be prepared is etched by means of the photoresist layer after exposure and development, and the residual photoresist layer is removed after the etching operation is completed.
The stretchable display device manufacturing method provided by the second embodiment of the present invention realizes shape adaptation of the film layer to be manufactured and the patterned substrate by coating the photoresist layer on the film layer to be manufactured stacked on the patterned substrate, performing exposure and development operations on the photoresist layer based on the patterned substrate, and performing etching operations on the film layer to be manufactured based on the photoresist layer, and when the patterned substrate has a stretchable or bendable characteristic, the stretchable display device manufacturing method provided by the embodiment of the present invention can prevent the prepared functional film layer unit without the stretchable or bendable characteristic from affecting the stretchable or bendable characteristic of the patterned substrate.
Fig. 5a to 5f are schematic front view structural diagrams illustrating a stretchable display device according to a third embodiment of the present invention in a main state when a polarizing layer is prepared by using a stretchable display device preparation method. As shown in fig. 5a, firstly, an 1/4 λ glass sheet layer 41 is stacked above (i.e. the side of the stretchable base film 1 where the pixel modules 2 are disposed) the patterned substrate (the patterned substrate includes the stretchable base film 1 and the plurality of pixel modules 2 disposed above the stretchable base film 1 and each having an independent island, and the traces 3 for connecting the pixel modules 2 having independent islands to each other), and a polyvinyl alcohol (PVA) layer 42 adjacent to the 1/4 λ glass sheet layer 41 is stacked above the 1/4 λ glass sheet layer 41; as shown in fig. 5b, a photoresist layer 5 is applied over PVA layer 42 (i.e., the side of PVA layer 42 not adjacent to 1/4 λ slide layer 41); as shown in fig. 5c, the portions of the photoresist layer 5 that need to be removed are removed based on the patterned substrate using an exposure and development operation; as shown in fig. 5d, PVA layer 42 is etched by the removed portions of photoresist layer 5; after the etching operation of the PVA layer 42 is completed, the 1/4 λ slide layer 41 continues to be etched by the removed portions of the photoresist layer 5, as shown in fig. 5 e; as shown in fig. 5f, the remaining portions of the photoresist layer 5 are removed after the 1/4 lambda slide layer 41 etching operation is complete.
It should be understood that the third embodiment of the present invention utilizes 1/4 lambda slide layer 41 and PVA layer 42 in a stacked arrangement to perform the function of the polarizing layer (i.e., functional film layer unit 4).
In the practical manufacturing process of the functional film unit 4 of the stretchable display device according to the third embodiment of the present invention, firstly, an 1/4 λ glass sheet layer 41 is stacked above the patterned substrate (the patterned substrate includes the stretchable substrate film 1 and the plurality of pixel modules 2 each independently forming an island disposed above the stretchable substrate film 1, and the wirings 3 for connecting the pixel modules 2 each independently forming an island to each other) (i.e., the side of the stretchable substrate film 1 on which the pixel modules 2 are disposed), a PVA layer 42 adjacent to the 1/4 λ glass sheet layer 41 is stacked above the 1/4 λ glass sheet layer 41, then a photoresist layer 5 is coated above the PVA layer 42 (i.e., the side of the PVA layer 42 not adjacent to the 1/4 λ glass sheet layer 41), and portions of the photoresist layer 5 to be removed are removed based on the patterned substrate by an exposure and development operation, finally, the PVA layers 42 and the 1/4 λ glass slide layer 41 are each subjected to an etching operation with the removed portions of the photoresist layer 5, and the remaining portions of the photoresist layer 5 are removed after the etching operation is completed.
It should be understood that, in the embodiment of the present invention, during the exposure and development operation, the portions of the photoresist layer 5 that need to be removed are the portions of the gaps between the photoresist layer 5 and each pixel module 2 that vertically correspond in the stacking direction, so as to provide the precondition for the subsequent etching operation of the 1/4 λ glass slide layer 41 and the PVA layer 42.
In an embodiment of the present invention, the 1/4 λ slide layer 41 is etched using a dichloromethane solution, and the PVA layer 42 is etched using pure water, so as to achieve a better etching effect.
The stretchable display device manufacturing method according to the third embodiment of the present invention achieves the purpose of improving the display effect of the stretchable display device without affecting the scalability of the stretchable display device by performing operations such as exposure, development, and etching to manufacture a polarizing layer on the patterned substrate of the stretchable display device, the polarizing layer being adapted to the patterned substrate.
In an embodiment of the present invention, the polarizing layer further includes a protective layer (not shown) adjacent to the PVA layer 42 and stacked on the PVA layer 42, and the embodiment of the present invention substantially improves the stability of the polarizing layer by disposing the protective layer.
In the actual preparation process, firstly, 1/4 λ slide layer 41, PVA layer 42 and protective layer are sequentially stacked and arranged above the patterned substrate (i.e. the side of the stretchable substrate film 1 where the pixel module 2 is arranged), after the stacking and arrangement is completed, the photoresist layer 5 is coated and the exposure and development operation is performed on the photoresist layer 5, after the exposure and development operation is completed, the protective layer, PVA layer 42 and 1/4 λ slide layer 41 are sequentially etched, and after all etching operations are completed, the remaining part of the photoresist layer 5 is removed.
It should be understood that the protective layer includes, but is not limited to, a cellulose Triacetate (TAC) layer or the like that protects other film layers of the polarizing layer.
In an embodiment of the present invention, the etching operation of the cellulose Triacetate (TAC) layer is performed using a dichloromethane solution, so as to achieve a better etching effect.
Fig. 6a to 6j are schematic front view structural diagrams illustrating a stretchable display device according to a fourth embodiment of the present invention in a main state when a polarizing layer is prepared by using a stretchable display device preparation method. As shown in fig. 6a, an 1/4 λ slide layer 41 is first stacked over the patterned substrate (i.e., the side of the stretchable substrate film 1 on which the pixel module 2 is disposed); as shown in fig. 6b, a photoresist layer 5 is laminated on top of the 1/4 λ slide layer 41; as shown in fig. 6c, the photoresist layer 5 is exposed and developed based on the patterned substrate; as shown in fig. 6d, an etching operation is performed on the 1/4 λ slide layer 41 based on the exposed and developed photoresist layer 5; as shown in fig. 6e, the remaining portions of the photoresist layer 5 are removed after the etching operation of the 1/4 λ slide layer 41 is completed; as shown in fig. 6f, an aqueous Liquid Crystal layer (Lyotropic Liquid Crystal)43 is stacked on top of the stretchable display device (i.e., on top of the 1/4 λ glass layer 41) with the photoresist layer 5 completely removed; as shown in fig. 6g, another photoresist layer 51 is laminated over the aqueous liquid crystal layer 43; as shown in fig. 6h, the coated photoresist layer 51 is subjected to an exposure and development operation based on the patterned substrate; as shown in fig. 6i, the aqueous liquid crystal layer 43 is etched based on the exposed and developed photoresist layer 51; as shown in fig. 6j, the remaining portions of the photoresist layer 51 are removed after the etching operation of the aqueous liquid crystal layer 43 is completed.
It should be understood that the functional film layer unit 4 of the stretchable display device provided by the fourth embodiment of the present invention is a polarizing layer including an 1/4 λ glass sheet layer 41 and an aqueous liquid crystal layer 43 which are arranged in a stack.
In the practical manufacturing process of the functional film unit 4 of the stretchable display device according to the fourth embodiment of the present invention, firstly, an 1/4 λ glass layer 41 is stacked above the patterned substrate (i.e. the side of the stretchable substrate film 1 where the pixel module 2 is disposed), a photoresist layer 5 is stacked above the 1/4 λ glass layer 41, the 1/4 λ glass layer 41 is etched after the exposure and development operations are performed on the photoresist layer 5, and the remaining portion of the photoresist layer 5 is removed after the etching operations are completed; then, an aqueous liquid crystal layer 43 is stacked on top of the prepared 1/4 λ slide glass layer 41 stretchable display device, another photoresist layer 51 is stacked on top of the aqueous liquid crystal layer 43, the aqueous liquid crystal layer 43 is subjected to an etching operation after the exposure developing operation is also performed on the photoresist layer 51, and the remaining portion of the photoresist layer 51 is removed after the etching operation is completed. That is, the 1/4 λ slide layer 41 and the aqueous liquid crystal layer 43 are independently subjected to the exposure development operation for coating the photoresist and the etching operation for itself.
In the embodiment of the present invention, the 1/4 λ slide layer 41 is also etched using a dichloromethane solution, so as to achieve a better etching effect.
In the stretchable display device manufacturing method provided by the fourth embodiment of the invention, the sub-film layers in the film layer to be manufactured are respectively coated with the photoresist layer to perform exposure development operation and etching operation, so that the yield of film layer manufacturing is effectively improved.
In addition, it should be understood that other film layer combining structures capable of realizing the functions of the polarizing layer can also be prepared by using the stretchable display device preparation method provided by the above embodiments of the present invention, and the embodiments of the present invention are not described in detail herein.
In an embodiment of the invention, each pixel module displays one sub-pixel.
Fig. 7 is a schematic flow chart illustrating a method for manufacturing a stretchable display device according to a fifth embodiment of the present invention. As shown in fig. 7, in a fifth embodiment of the present invention, a stretchable display device manufacturing method includes:
step S1: a plurality of pixel modules each independently forming an island and electrically connected to each other are prepared or provided.
Step S2: and preparing functional film layer units on the surfaces of the pixel modules.
Step S3: and etching the functional film layer units into a plurality of functional film layer units respectively and correspondingly covering the plurality of pixel modules along the gaps among the plurality of pixel modules.
In another embodiment of the present invention, the exposure etching process is used to etch the functional film layer unit into a plurality of functional film layer units respectively covering the plurality of pixel modules.
In an embodiment of the present invention, an electronic device with a stretchable display device is further provided, and a functional film unit of the stretchable display device of the electronic device is prepared by using the method for preparing the stretchable display device provided in any one of the embodiments. The electronic device includes, but is not limited to, a mobile phone, a tablet computer, a display, and other electronic devices.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (8)
1. A stretchable display device, comprising:
a plurality of pixel modules which are independent into islands and are electrically connected with each other; and
the liquid crystal display panel comprises a plurality of pixel modules, a plurality of functional film layer units and a plurality of polarizer layers, wherein the plurality of functional film layer units are arranged on the surfaces of the plurality of pixel modules in a stacked mode, each functional film layer unit correspondingly covers the surface of one pixel module, the functional film layer units comprise a polarizing layer, and the polarizing layer comprises 1/4 lambda glass layers and aqueous phase liquid crystal layers or polyvinyl alcohol layers arranged in a stacked mode with 1/4 lambda glass layers.
2. A stretchable display device according to claim 1, wherein the functional film layer unit further comprises an encapsulation layer and/or a stiffening layer.
3. The stretchable display device of claim 1, wherein the polarizing layer further comprises a protective layer disposed in a stack on a surface of the polyvinyl alcohol layer.
4. The stretchable display device of claim 1, wherein the pixel module displays one sub-pixel.
5. The stretchable display device of claim 1, further comprising:
a stretchable base film on a surface of which the plurality of pixel modules are laminated.
6. A method of making a stretchable display device, comprising:
preparing or providing a plurality of pixel modules which are independent into islands and are electrically connected with each other;
preparing a functional film layer unit on the surfaces of the plurality of pixel modules, wherein the functional film layer unit comprises a polarizing layer, and the polarizing layer comprises an 1/4 lambda glass sheet layer and an aqueous phase liquid crystal layer or a polyvinyl alcohol layer which is arranged in a laminated mode with the 1/4 lambda glass sheet layer; and
and etching the functional film layer units into a plurality of functional film layer units respectively and correspondingly covering the pixel modules along the gaps among the pixel modules.
7. The stretchable display device manufacturing method of claim 6, wherein the functional film layer units are etched by using an exposure etching process to respectively cover the plurality of functional film layer units of the plurality of pixel modules.
8. The stretchable display device manufacturing method of claim 6, wherein the functional film layer unit further comprises an encapsulation layer and/or a hardening layer.
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| US11785832B2 (en) | 2018-07-24 | 2023-10-10 | Boe Technology Group Co., Ltd. | Display device and method for manufacturing the same |
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| CN108227281A (en) | 2018-06-29 |
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