CN107450217B - Substrate, method for manufacturing substrate, and method for dividing display panel - Google Patents
Substrate, method for manufacturing substrate, and method for dividing display panel Download PDFInfo
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- CN107450217B CN107450217B CN201710851323.5A CN201710851323A CN107450217B CN 107450217 B CN107450217 B CN 107450217B CN 201710851323 A CN201710851323 A CN 201710851323A CN 107450217 B CN107450217 B CN 107450217B
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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
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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
- G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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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
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a substrate base plate, a manufacturing method of the substrate base plate and a dividing method of a display panel, and belongs to the field of manufacturing of display panels. The substrate base plate includes: a protective substrate; a functional substrate is arranged on the protective substrate, and a connecting structure for connecting the functional substrate and the protective substrate is arranged between the functional substrate and the protective substrate; the display structure comprises a functional substrate, a protective substrate and a display structure, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing a plurality of display panels, and the protective substrate can be removed from the functional substrate. According to the invention, the protective substrate is arranged on the functional substrate for bearing the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that the functional substrate is prevented from being damaged. The problem of in the correlation technique, in the process of forming the display structure or cutting apart the display large plate, can lead to the substrate base plate to appear the damage of certain degree is solved. The effect of reducing the reject ratio of the display panel is achieved.
Description
Technical Field
The present invention relates to the field of display panel manufacturing, and in particular, to a substrate, a method for manufacturing the substrate, and a method for dividing a display panel.
Background
A display panel typically includes two substrate base plates and a display structure disposed in the two substrate base plates, which can be used to implement a display function.
In the related art, a plurality of display structures in an array substrate may be formed on one substrate, a plurality of display structures in a color filter substrate may be formed on another substrate, and then the two substrates are stacked to form a large display Panel (the large display Panel is generally called a Q-Panel, and includes a plurality of display panels).
However, in the process of forming the display structure or dividing the display panel, the substrate may be damaged to some extent, such as abrasion or deformation, and the damage may easily cause various defects of the display panel.
Disclosure of Invention
The embodiment of the invention provides a substrate base plate, a manufacturing method of the substrate base plate and a dividing method of a display panel, which can solve the problem that in the related art, in the process of forming a display structure of the display panel or dividing a large display panel, the substrate base plate can be damaged to a certain extent, and the damage is easy to cause various defects of the display panel. The technical scheme is as follows:
according to a first aspect of embodiments of the present invention, there is provided a substrate base plate, including a protective base plate;
the protective substrate is provided with a functional substrate, and a connecting structure for connecting the functional substrate and the protective substrate is arranged between the functional substrate and the protective substrate;
the display structure comprises a functional substrate, a protective substrate and a display structure, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing a plurality of display panels, and the protective substrate can be removed from the functional substrate.
Optionally, an orthographic projection of the connecting structure on the functional substrate does not overlap with an orthographic projection of the display structures of the plurality of display panels on the functional substrate.
Optionally, the connecting structure is a frame sealing adhesive.
Optionally, the substrate base plate further comprises a buffer layer made of a buffer material,
the buffer layer is disposed between the functional substrate and the protective substrate.
Optionally, the display structure comprises a frame sealing adhesive and a display device,
the base substrate includes a light shielding pattern made of a light shielding material,
the light shielding pattern is disposed between the functional substrate and the protective substrate, and an orthographic projection of the light shielding pattern on the functional substrate overlaps with an orthographic projection of the display devices of the plurality of display panels on the functional substrate.
Optionally, the functional substrate is a flexible substrate, or the thickness of the functional substrate is 0.1mm to 0.4 mm.
According to a second aspect of the embodiments of the present invention, there is provided a method of manufacturing a base substrate, the method including:
acquiring a functional substrate and a protective substrate;
connecting one surface of the two larger surfaces of the functional substrate with one surface of the two larger surfaces of the protective substrate through a connecting structure;
the display structure comprises a functional substrate, a protective substrate and a display structure, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing a plurality of display panels, and the protective substrate is used for protecting the functional substrate in the manufacturing process of the display panels.
Optionally, before the one of the two larger surfaces of the functional substrate and the one of the two larger surfaces of the protective substrate are connected by the connecting structure, the method further includes:
a buffer layer made of a buffer material is formed on the protective substrate.
Optionally, the display structure includes a frame sealing adhesive and a display device, and before the connecting structure connects one of the two larger surfaces of the functional substrate and one of the two larger surfaces of the protective substrate, the method further includes:
and forming a light shielding pattern made of a light shielding material on the protective substrate, wherein orthographic projections of the light shielding pattern on the functional substrate are overlapped with orthographic projections of the display devices of the plurality of display panels on the functional substrate.
According to a third aspect of embodiments of the present invention, there is provided a dividing method of a display panel, the dividing method including:
optionally, the method is used for dividing a large display panel formed by the substrate base plate according to the first aspect, and the method includes:
acquiring a display large plate;
dividing the display large panel into a plurality of display panels;
removing the protective substrate outside the plurality of display panels.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the protective substrate is arranged on the functional substrate for bearing the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a substrate according to an embodiment of the present invention;
FIG. 2-1 is a schematic structural diagram of another substrate provided in an embodiment of the present invention;
fig. 2-2 is a schematic structural diagram of another substrate base plate provided in the embodiment of the present invention;
2-3a are schematic structural diagrams of another substrate provided by an embodiment of the invention;
2-3b are schematic cross-sectional views of the substrate shown in FIGS. 2-3 a;
FIGS. 2-3c are schematic structural views of a display panel made from the substrate base shown in FIGS. 2-3 a;
fig. 2-4 are schematic structural diagrams of another substrate provided by the embodiment of the invention;
2-5a are schematic structural diagrams of another substrate provided by embodiments of the invention;
2-5b are schematic structural diagrams of another substrate provided by embodiments of the invention;
FIG. 3 is a flow chart of a method for manufacturing a substrate base according to an embodiment of the present invention;
FIG. 4-1 is a flow chart of another method for manufacturing a substrate base according to an embodiment of the present invention;
fig. 4-2 is a schematic structural diagram of a protection substrate according to an embodiment of the present invention;
fig. 4-3 are schematic structural diagrams of a functional substrate according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for manufacturing a substrate base according to an embodiment of the present invention;
FIG. 6-1 is a flow chart of acquiring a display panel according to an embodiment of the present invention;
FIG. 6-2 is a flowchart of a method for dividing a display panel according to an embodiment of the present invention;
fig. 6-3 is a schematic structural diagram of a display structure of a plurality of display panels formed on a substrate according to an embodiment of the present invention;
fig. 6-4 are schematic structural views of a large display panel according to an embodiment of the present invention;
FIGS. 6-5 are schematic diagrams of a UV irradiation display panel according to an embodiment of the present invention;
FIGS. 6-6 are schematic diagrams of a dividing line for dividing a display panel according to an embodiment of the present invention;
fig. 6-7 are schematic structural diagrams of a display panel including a protective substrate according to an embodiment of the present invention;
fig. 6-8 are schematic structural diagrams of a display panel with a protective substrate removed according to an embodiment of the present invention.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
In the related art, various Flat Panel Displays (FPDs), such as Liquid Crystal Displays (LCDs), Plasma Displays (PDPs), electroluminescent displays, Vacuum Fluorescent Displays (VFDs), Flat-Panel cathode ray tube displays, Light Emitting diodes (OLEDs), and the like, are generally used, and the substrate substrates used in the related art are generally single-layer structures, such as a single-layer glass substrate, a single-layer polyimide substrate, a single-layer acrylic resin substrate, and the like. These single-layer base substrates are easily damaged in the process of manufacturing the display panel.
An embodiment of the present invention provides a substrate base, which may have a structure as shown in fig. 1, and the substrate base may solve some problems in the related art, and the substrate base 00 may include: a protective substrate 01, a functional substrate 02 and a connection structure 03.
The protective substrate 01 is provided with a functional substrate 02, and a connection structure 03 for connecting the functional substrate 02 and the protective substrate 01 is provided between the functional substrate 02 and the protective substrate 01.
The display structure in which one surface of the functional substrate 02 remote from the protective substrate 01 is used for carrying a plurality of display panels, and the protective substrate 01 can be removed from the functional substrate 02 after dividing the display panel into the display panels.
In the process of manufacturing the display structure on the functional substrate 02 or in the process of dividing the display panel into the display panels after the display panel is manufactured, the protective substrate 01 may effectively prevent the functional substrate 02 from being damaged due to heat, various frictions, or stress.
In summary, in the substrate provided in the embodiments of the present invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
Further, referring to fig. 2-1, a schematic structural diagram of another substrate according to an embodiment of the present invention is shown, in which the substrate shown in the figure is disposed between the functional substrate 02 and the protective substrate 01 shown in fig. 1, and in addition to the connection structure 03, a preset film 04 is further disposed.
According to the difference of the material and the structure of the preset film layer 04, the preset film layer 04 can provide various functions, and the embodiment of the present invention is described by taking the following three cases as examples:
in the first case, the predetermined film layer is a buffer layer made of a buffer material.
The buffer layer can prevent the functional substrate from being impacted on the protective substrate due to deformation and prevent the protective substrate from being impacted on the functional substrate due to deformation. In addition, the buffer layer can improve the deformation resistance of the substrate base plate and reduce the possibility of substrate base plate fracture. Therefore, the buffer layer is arranged between the protective substrate and the functional substrate, so that the capability of the substrate provided by the embodiment of the invention for protecting the functional substrate is further improved. As shown in fig. 2-2, the substrate base 00 includes a functional base 02, a protective base 01, a connection structure 03, and a buffer layer 041. When the outer side of the protective substrate 01 (the side of the protective substrate 01 away from the functional substrate 02) is stressed to cause the protective substrate 02 to generate convex deformation toward the functional substrate 02, the functional substrate 02 is not damaged under the protection of the buffer layer 041, and the buffer layer 041 can help the protective substrate 01 to resist the deformation and prevent the protective substrate 01 from being broken due to excessive deformation. In addition, the buffer layer 041 may have an entire layer structure, or may have a structure including a plurality of buffer blocks, which is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the cushioning material for constituting the cushioning layer may be a material having characteristics such as impact energy absorption, vibration absorption, and restorability, and the cushioning material may be a cushioning resin, for example. The buffer material can also refer to the related art, and the embodiment of the invention is not limited herein.
In the second case, the predetermined film layer is a light-shielding pattern made of a light-shielding material.
The orthographic projection of the shading pattern on the functional substrate is overlapped with the orthographic projection of the display devices of the plurality of display panels on the functional substrate. The shading pattern can shield curing light (the curing light is light for irradiating the frame sealing glue to enable the frame sealing glue to be cured) when the frame sealing glue in the large display panel is subjected to photocuring, and damage to a display device caused by the curing light is avoided.
The light-shielding pattern may be formed by mask exposure, ink-jet printing, mask evaporation, or the like. The material of the light-shielding pattern may be an opaque material such as metal or light-shielding resin, and the embodiment of the invention is not limited herein.
It should be noted that the display structure in the embodiment of the present invention may include a frame sealing adhesive in the display panel and a display device (the display device may include components such as a TFT, a liquid crystal, a color film, and an OLED), where the frame sealing adhesive is disposed at a periphery of the display device.
In the related art, in the process of manufacturing a display panel, a plurality of frame-shaped frame sealing adhesives may be formed on a substrate including a plurality of array substrates, then liquid crystal is injected into a region surrounded by the frame sealing adhesives, then the substrate and the substrate including a plurality of color film substrates are aligned, and then the frame sealing adhesives are photocured by curing light to form a display panel. In the process of photo-curing, in order to avoid damage to the display device caused by curing light, the display devices of a plurality of display panels in the large panel are shielded by a mask plate which is accurately aligned with the orthographic projections of the display devices on the functional substrate. However, if the mask plate is not aligned precisely, the display device in the large display panel may be damaged by the curing light, so that the entire large display panel is discarded.
The substrate provided by the embodiment of the invention is provided with the shading pattern, so that the shading pattern can be used as a mask to directly carry out photocuring on the frame sealing glue between the substrate substrates, and the display device surrounded by the frame sealing glue can be shielded without using a mask plate which is accurately aligned. And the shading pattern can be measured after the shading pattern is formed on the protective substrate (or the functional substrate), if the error between the position of the shading pattern and the preset position (when the shading pattern is formed at the preset position, the error just can prevent the curing light from irradiating the orthographic projection of the display device on the functional substrate) is larger than the preset value, the shading pattern can be removed and remanufactured or the protective substrate (or the functional substrate) can be directly reported to be useless, so that the subsequent whole display large panel is prevented from being wasted, therefore, the method taking the shading pattern as the mask in the embodiment not only saves the production cost, but also saves the time cost.
Illustratively, as shown in fig. 2 to 3a, the base substrate 00 includes a functional substrate 02, a protective substrate 01, a connection structure 03, and a light shielding pattern 042. The light shielding pattern 042 is provided between the functional substrate 02 and the protective substrate 01. Further, as shown in FIGS. 2-3b, which are cross-sectional views at p1-p2 of FIGS. 2-3 a. In fig. 2-3b, a connection structure 03 and a light shielding pattern 042 are disposed on a functional substrate 02, and in a display large panel formed by the substrate 00, the light shielding pattern 042 overlaps with orthographic projections of display devices (not shown in fig. 2-3 b) of a plurality of display panels on the functional substrate 02, for example, refer to fig. 2-3c, which are schematic structural diagrams of the display large panel 10 made from the substrate shown in fig. 2-3a (the manufacturing process of the display large panel 10 may refer to the method embodiment of the present application below, and is not described here again), and the orthographic projections (not shown in fig. 2-3 c) of the display devices 112 of the display large panel 10 on the functional substrate 02 and the orthographic projections 05 of the light shielding pattern 042 on the functional substrate 02 coincide. Therefore, when the frame sealing adhesive 111 in the display structure of the display panel is photocured, the curing light is shielded by the light shielding pattern 042, so that the curing light is prevented from irradiating the display device 112.
In the third situation, the preset film layer is a composite functional film layer with buffering and shading functions.
The preset film layer can be a single film layer formed by a material with two functions of buffering and shading, and can also be a composite film layer comprising shading patterns and a buffering layer. When the predetermined film is a single film, the shape of the single film may refer to fig. 2 to 3a and 2 to 3b, and when the predetermined film is a composite film, the buffer layer may be a transparent buffer layer or the shape of the buffer layer may be the same as the shape of the light blocking pattern shown in fig. 2 to 3a and 2 to 3 b.
For example, as shown in fig. 2-4, in the case that the preset film layer is a composite film layer, in the drawing, the preset film layer 04 is composed of a buffer layer 041 and a shading pattern 042, where the buffer layer 041 may be made of a transparent buffer material, so as to avoid affecting subsequent photo-curing of the frame sealing adhesive in the display panel. The predetermined film layer 04 can provide the functional substrate 02 with the protection function in the first case and the light shielding function in the second case.
It should be noted that the substrate provided in the embodiment of the present invention may be any one of three substrate substrates formed by the three predetermined film layers, and in addition, the substrate provided in the embodiment of the present invention may be used as at least one substrate in two substrate substrates of the display panel. For example, a substrate with a light blocking pattern may be used on the side of the display panel on which the curing light is irradiated, and a substrate with a buffer layer may be used on the side of the display panel on which the curing light is not irradiated. In addition, the predetermined film layer may also be a substrate base substrate made of other materials or other structures and having other functions, and the embodiment of the invention is not limited herein.
Optionally, the connection structure in the substrate base plate is used for connecting the functional base plate and the protective base plate, and supporting the protective base plate and the functional base plate, so that a certain gap exists between the functional base plate and the protective base plate, and a certain buffer space can be reserved in the gap when the functional base plate or the protective base plate deforms, so that the two base plates are prevented from being directly extruded with each other. The gap may be 2 to 5 microns.
Optionally, in the substrate provided in the embodiment of the present invention, the connection structure may be located at a periphery of the preset film layer, and form a closed space together with the functional substrate and the protective substrate, so as to protect the preset film layer from being corroded by external air and water vapor. For example, as shown in fig. 2 to 3b, the connection structure 03 surrounds the light shielding pattern 042 as a predetermined film layer, and forms a closed space with the functional substrate 02 and the protective substrate (not shown in fig. 2 to 3 b) to prevent the light shielding pattern 042 from being eroded by the external air and water vapor.
Optionally, the orthographic projection of the connecting structure on the functional substrate does not overlap with the orthographic projection of the display structures of the plurality of display panels on the functional substrate. Therefore, after the display large plate is manufactured, the connecting structure can be directly cut off from the display large plate, and the subsequent removal of the functional substrate is facilitated. As an example, referring to fig. 2 to 5a, in which the connection structure 03 is located at the periphery of the plurality of light shielding patterns 042 on the protective substrate 01, assuming that the display structure 11 is disposed on the side of the functional substrate 02 away from the protective substrate 01, as shown in fig. 2 to 5a, an orthographic projection y1 of the connection structure 03 on the functional substrate 02 does not overlap with an orthographic projection y2 of the display structure 11 on the functional substrate 02. Another connection structure can be shown in fig. 2-5b, in which the substrate 00 is a substrate without a predetermined film layer, the area marked by a dotted line in the figure is an orthographic projection of the display structure on the functional substrate 02, and in the figure, the orthographic projection of the connection structure 03 on the functional substrate 02 is not overlapped with the orthographic projection of the display structure on the functional substrate. In addition, the shape of the connecting structure 03 can be various, and the embodiment of the present invention is not limited herein.
Optionally, the connection structure of the substrate provided by the embodiment of the invention may be a frame sealing adhesive.
Optionally, the functional substrate may be a flexible substrate or an ultra-thin substrate, for example, the flexible substrate may be a substrate made of polyimide or the like, and the ultra-thin substrate may be a substrate with a thickness of 0.1mm to 0.4 mm. For example, if the functional substrate of the substrate base plate is a flexible base plate, the substrate base plate may serve as a substrate base plate of the flexible display panel, and if the functional substrate of the substrate base plate is an ultra-thin base plate, the substrate base plate may serve as a substrate base plate of the ultra-thin display panel. In the related art, the substrate base plate is a single-layer base plate, and when an ultra-thin display panel or a flexible display panel is manufactured by using the single-layer substrate base plate, after a large display panel is formed in a box, processes such as thinning, polishing, flexible peeling and the like are further performed on the substrate base plate of the large display panel, and the processes may damage the substrate base plate to a certain extent. The substrate base plate is designed into the composite base plate comprising the functional base plate with different functions such as ultrathin property or flexibility and the protective base plate with the protective function, so that the steps of thinning, polishing, flexible stripping and other processes can be omitted, and the reject ratio of the display panel is reduced.
In summary, in the substrate provided in the embodiments of the present invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
Fig. 3 is a flowchart of a method for manufacturing a substrate base plate according to an embodiment of the present invention, where the method for manufacturing the substrate base plate shown in fig. 1 may be used to manufacture the substrate base plate shown in fig. 1, and the method for manufacturing may include:
The display structure comprises a functional substrate, a protective substrate and a display structure, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing a plurality of display panels, and the protective substrate is used for protecting the functional substrate in the manufacturing process of the display panels.
In summary, in the substrate provided in the embodiments of the present invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
The substrate manufacturing method provided by the embodiment of the invention may include various methods according to the difference of the predetermined film layer between the functional substrate and the protective substrate, which are described below.
When the predetermined film layer is a buffer layer, as shown in fig. 4-1, which is a flowchart of another method for manufacturing a substrate according to an embodiment of the present invention, the method may include:
The functional substrate can be made of materials such as glass, polyimide, acrylic resin and the like, and according to the type of the display panel to be manufactured, the functional substrates made of different materials can be obtained, illustratively, the functional substrate made of a flexible material can be obtained when the flexible display panel is manufactured, and the functional substrate made of an ultrathin material (0.1mm to 0.4mm) can be obtained when the ultrathin display panel is manufactured.
The protective substrate may be made of the same material as the functional substrate, or may be made of other materials with protective effect, such as glass.
Step 402 is to form a buffer layer made of a buffer material on a protective substrate.
The buffer layer may be formed by disposing a buffer material on the protective substrate through spin coating, sputtering, or the like. At the end of this step, the structure of the protection substrate may be as shown in fig. 4-2, wherein the buffer layer 041 is disposed on the protection substrate 01.
In step 403, a frame sealing adhesive is formed on the functional substrate.
And (3) coating the packaging adhesive on the functional substrate, wherein the functional substrate can be as shown in fig. 4-3 at the end of the step.
The embodiment of the present invention takes the connection structure as the frame sealing adhesive for example, but the connection structure may also be made of other materials, and the embodiment of the present invention is not limited thereto.
This step may be performed simultaneously with step 402 or before step 402, and embodiments of the present invention are not limited.
When the functional substrates and the protective substrate are connected, the frame sealing glue can be firstly arranged on one substrate, and then the other substrate and the substrate provided with the frame sealing glue are paired to make the two substrates connected together through the frame sealing glue. At the end of this step, the structures of the functional substrate and the protective substrate can be referred to fig. 2-3 a.
After the functional substrate and the protective substrate are bonded by the frame sealing adhesive, the frame sealing adhesive can be cured by irradiating the frame sealing adhesive with curing light (such as an ultraviolet lamp), so that the functional substrate and the protective substrate are bonded stably.
The embodiment of the invention adopts a synchronous operation manufacturing mode that the frame sealing glue is formed on the functional substrate and the preset film layer is formed on the protective substrate, and the mode can avoid the situation that one substrate of the protective substrate and the functional substrate is idle and the other substrate is repeatedly processed in the process of manufacturing the substrate base plate, thereby improving the production efficiency of the display panel. In addition, the embodiment of the invention can also adopt a mode of forming a preset film layer on the functional substrate and forming the frame sealing glue on the protective substrate, or adopt a mode of forming a connecting structure and the preset film layer on the protective substrate. Since the functional substrate is a substrate having special properties (such as a flexible substrate or an ultra-thin substrate), the substrate may be fragile, and thus, damage to the functional substrate can be avoided by forming a frame sealing adhesive and a predetermined film layer on the protective substrate.
In summary, in the method for manufacturing a substrate according to the embodiment of the invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
When the predetermined film layer is the light shielding pattern, as shown in fig. 5, it is a flowchart of another method for manufacturing the substrate according to the embodiment of the present invention, and the method may include:
This step may refer to step 401, which is not described herein again.
Step 502 is to form a light shielding pattern made of a light shielding material on the protective substrate, and an orthographic projection of the light shielding pattern on the functional substrate is overlapped with an orthographic projection of the display devices of the plurality of display panels on the functional substrate.
The light shielding pattern composed of the light shielding material may be formed on the protective substrate through a patterning process, which may be any one of mask exposure, inkjet printing, and mask evaporation. The light-shielding pattern formed in this step can refer to fig. 2-3a and fig. 2-3b, and is not described herein again.
The structure of the frame sealing adhesive can refer to fig. 2-3 a.
This step may be performed simultaneously with step 502 or before step 502, and embodiments of the present invention are not limited.
This step may refer to step 403, which is not described herein again.
And 505, performing photocuring on the frame sealing glue to ensure that the functional substrate and the protective substrate are stably bonded.
This step may refer to step 404, which is not described herein again.
It should be noted that, when the predetermined film layer in the substrate base plate is the composite film layer, in the manufacturing method of the substrate base plate, the step of manufacturing the predetermined film layer may refer to step 502 in the embodiment of the present invention and step 402 in the embodiment shown in fig. 4, a buffer layer and a light shielding pattern are formed on the protective base plate (the structures of the buffer layer and the light shielding pattern may refer to fig. 2-4), and the other steps may refer to steps 501, 503, 504, and 505 in the embodiment of the present invention.
In summary, in the method for manufacturing a substrate according to the embodiment of the invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
As shown in fig. 6-1, which is a flowchart of a method for dividing a display panel according to an embodiment of the present invention, the method for dividing a display panel may be used to divide a large display panel formed by the substrate shown in fig. 1, fig. 2-2, and fig. 2-3a, and the method for dividing includes:
and 601, acquiring a large display panel.
As shown in fig. 6-2, this step may include the following sub-steps:
As shown in fig. 6-3, a plurality of display structures 11 of display panels are formed on the substrate 00, that is, a plurality of display structures 11 of display panels are formed on a side of the functional substrate (not shown in fig. 6-3) of the substrate 00 away from the protective substrate, and each display structure 11 may include a display device 112 and a sealant 111 disposed around the display device 112. The substrate base plate 00 is formed in the embodiment shown in fig. 5 and has a light shielding pattern, and the orthographic projection of the display device 112 in the display structure 11 on the functional base plate corresponds to the region where the light shielding pattern is located in the substrate structure.
The substrate base plate formed in sub-step 6011 is paired with another substrate base plate to form a large display panel, wherein the other substrate base plate may also form part of the display structure. As shown in fig. 6-4, the display panel 10 is composed of a base substrate 12, a plurality of display structures 11 and another base substrate 13. Wherein at least one of the base substrate 12 or the base substrate 13 is the base substrate with the light shielding pattern formed in the embodiment shown in fig. 5.
As shown in fig. 6-5, the substrate 12 and the substrate 13 of the display large panel 10 in the figure are both provided with the light-shielding pattern 042, so that the frame sealing glue in the display structure can be irradiated from any side outside the display large panel 10, and the display large panel 10 is irradiated from the side of the substrate 12 far away from the display structure 11 by using UV (ultraviolet light) to cure the frame sealing glue, and meanwhile, the display device cannot be damaged by UV due to shielding of the light-shielding pattern 042.
In the process of dividing the display large panel, a dividing line of the display large panel may be determined first, and then the display large panel may be divided according to the dividing line by means of laser cutting or cutter wheel cutting, as shown in fig. 6-6, the number of the dividing lines of the display large panel in the figure may be 8, which are respectively c1 to c8, and the connection structure 03 of the substrate base plate 00 of the display large panel may be disposed at the edge of the substrate base plate 00. The dividing lines c1, c4, c5 and c8 are located between the areas where the plurality of display structures 11 are located and the connecting structures 03 in the substrate base plate 00, the display large plate is cut along the dividing lines c1, c4, c5 and c8, the connecting structures 03 in the substrate base plate 00 of the display large plate can be cut, and the dividing lines c2, c3, c6 and c7 are located in the blank areas between the plurality of display structures. In addition, the dividing line of the display large panel may be located at other positions, and the embodiment of the present invention is not limited herein.
The display panel 00 shown in fig. 6-6 is divided into 9 display panels including protective substrates by 8 dividing lines shown in fig. 6-6, and fig. 6-7 show the structure of one display panel 101 including a protective substrate, and since the dividing lines are located between the frame sealing glue and the orthographic projection of the display structure on the functional substrate, the frame sealing glue is also cut off, as shown in fig. 6-7, the display panel 101 including a protective substrate further includes a cut protective substrate 011, a cut functional substrate 021 and two light shielding patterns 042.
As shown in fig. 6-7, since there is no frame sealing adhesive between the cut protection substrate 011 and the cut functional substrate 021, the cut protection substrate 011 and the light shielding pattern 042 can be easily removed, and finally the display panel 1011 shown in fig. 6-8 is obtained, where the display panel 1011 includes the display structure 11 and the cut functional substrate 021.
In summary, in the method for dividing a display panel according to the embodiment of the present invention, the protective substrate is disposed on the functional substrate for supporting the display structure, and the functional substrate is protected by the protective substrate in the manufacturing process of the display panel, so that damage to the functional substrate is avoided. The problems that in the related art, a substrate base plate is possibly damaged to a certain degree in the process of forming a display structure or dividing a large display panel, and various defects of a display panel are easily caused by the damage are solved. The effect of reducing the reject ratio of the display panel is achieved.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when a structure or layer is referred to as being "on" another structure or layer, it can be directly on the other structure or intervening layers may also be present. In addition, it will be understood that when a structure or layer is referred to as being "under" another structure or layer, it can be directly under the other structure or intervening layers or structures may also be present. In addition, it will also be understood that when a layer or structure is referred to as being "between" two layers or structures, it can be the only layer between the two layers or structures, or more than one intermediate layer or structure may also be present. Like reference numerals refer to like structures throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A substrate base, comprising a protective base;
the protective substrate is provided with a functional substrate, a preset film layer and a connecting structure for connecting the functional substrate and the protective substrate are arranged between the functional substrate and the protective substrate, the preset film layer and the connecting structure are two independent parts, one of the preset film layer and the connecting structure is formed on the functional substrate, and the other is formed on the protective substrate; the connecting structure is positioned at the periphery of the preset film layer;
the display structure comprises a functional substrate, a protective substrate and a display device, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing the display structures of a plurality of display panels, the protective substrate can be removed from the functional substrate, and the display structures comprise frame sealing glue and display devices;
the orthographic projection of the connecting structure on the functional substrate is not overlapped with the orthographic projection of the display structures of the display panels on the functional substrate, the preset film layer is a single film layer which is made of materials with two functions of buffering and shading, the single film layer comprises a plurality of film layer patterns, and the orthographic projection of each film layer pattern on the functional substrate is only overlapped with the orthographic projection of the display devices of the display panels on the functional substrate; or, the preset film layer comprises a buffer layer made of transparent buffer material and a composite film layer made of a plurality of shading patterns made of shading material, the orthographic projection of each shading pattern on the functional substrate is only overlapped with the orthographic projection of the display devices of the display panels on the functional substrate, and the buffer layer is of a whole layer structure or a structure comprising a plurality of buffer blocks.
2. The substrate of claim 1, wherein the connection structure is a frame sealing adhesive.
3. The substrate according to claim 1, wherein the functional substrate is a flexible substrate, or the functional substrate has a thickness of 0.1mm to 0.4 mm.
4. The substrate board according to claim 1, wherein the buffer material is a material having characteristics such as impact energy absorption, vibration absorption, and restorability, and the light-shielding material is an opaque material such as a metal material or a light-shielding resin.
5. A method for manufacturing a base substrate, for manufacturing the base substrate according to any one of claims 1 to 4, the method comprising:
acquiring a functional substrate and a protective substrate;
connecting one surface of the two larger surfaces of the functional substrate with one surface of the two larger surfaces of the protective substrate through a connecting structure;
the display structure comprises a functional substrate, a protective substrate and a display structure, wherein one surface of the functional substrate, which is far away from the protective substrate, is used for bearing a plurality of display panels;
the display structure comprises a frame sealing adhesive and a display device, and before one surface of the two larger surfaces of the functional substrate and one surface of the two larger surfaces of the protective substrate are connected through the connecting structure, the method further comprises the following steps:
and forming a light shielding pattern made of a light shielding material on the protective substrate, wherein orthographic projections of the light shielding pattern on the functional substrate are overlapped with orthographic projections of the display devices of the plurality of display panels on the functional substrate.
6. The method according to claim 5, wherein before the connecting one of the two larger surfaces of the functional substrate and the one of the two larger surfaces of the protective substrate by the connecting structure, the method further comprises:
a buffer layer made of a buffer material is formed on the protective substrate.
7. A method for dividing a display panel, which is used for dividing a large display panel formed of the substrate base plate according to any one of claims 1 to 4, the method comprising:
acquiring a display large plate;
dividing the display large panel into a plurality of display panels;
removing the protective substrate outside the plurality of display panels.
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| CN102176435A (en) * | 2010-12-27 | 2011-09-07 | 友达光电股份有限公司 | Flexible substrate structure and manufacturing method thereof |
| CN104112765A (en) * | 2014-07-17 | 2014-10-22 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method thereof |
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| TWI423739B (en) * | 2011-09-23 | 2014-01-11 | Au Optronics Corp | Flexible substrate structure and manufacturing method thereof |
| US9293291B2 (en) * | 2012-08-31 | 2016-03-22 | Samsung Display Co., Ltd. | Flexible display device manufacturing method and carrier substrate for the method |
| CN104460095B (en) * | 2015-01-05 | 2018-05-08 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof |
| CN106981498A (en) * | 2016-01-19 | 2017-07-25 | 上海和辉光电有限公司 | Display device structure, display device preparation method |
| CN105679806B (en) * | 2016-04-13 | 2018-07-17 | 京东方科技集团股份有限公司 | Flexible display substrates and its motherboard, preparation method, flexible display panels and its motherboard |
| CN106066550A (en) * | 2016-07-28 | 2016-11-02 | 武汉华星光电技术有限公司 | Liquid crystal display, display panels and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102176435A (en) * | 2010-12-27 | 2011-09-07 | 友达光电股份有限公司 | Flexible substrate structure and manufacturing method thereof |
| CN104112765A (en) * | 2014-07-17 | 2014-10-22 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method thereof |
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