CN108333818A - Display panel and its manufacturing method - Google Patents
Display panel and its manufacturing method Download PDFInfo
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- CN108333818A CN108333818A CN201810080304.1A CN201810080304A CN108333818A CN 108333818 A CN108333818 A CN 108333818A CN 201810080304 A CN201810080304 A CN 201810080304A CN 108333818 A CN108333818 A CN 108333818A
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- flexible substrate
- crystal cell
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 239000000758 substrate Substances 0.000 claims abstract description 109
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 39
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 239000004642 Polyimide Substances 0.000 claims description 15
- 229920001721 polyimide Polymers 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of manufacturing methods of display panel comprising：First flexible substrate is formed on the first rigid substrate, and forms second flexible substrate on the second rigid substrate；Array processes are completed in first flexible substrate, to form multiple array areas, and color membrane process are completed in second flexible substrate, to form multiple areas Cai Mo；Array area and the areas Cai Mo is set to correspond at box, to form multiple liquid crystal cells；Cutting separation is carried out to liquid crystal cell；It is irradiated from the second rigid substrate side of liquid crystal cell using first laser, the second rigid substrate and second flexible substrate of liquid crystal cell is removed；It is irradiated from the first rigid substrate side of liquid crystal cell using second laser, the first rigid substrate and first flexible substrate of liquid crystal cell is removed, the wavelength of second laser is less than the wavelength of first laser.The present invention uses the rigid substrate of the different laser lift-off both sides of wavelength, to avoid the problem that the array device performance caused by flexible base board out-of-flatness declines.
Description
Technical field
The invention belongs to display panel manufacturing technology fields, in particular, it is related to a kind of display panel and its manufacturing method,
More particularly to a kind of display panel flexible and its manufacturing method.
Background technology
With the gradual rise of wearable application apparatus such as intelligent glasses, smartwatch etc., display industry is aobvious to deflection
Show that the demand of device is also continuously increased.Organic Light Emitting Diode (Organic Light Emitting Display, OLED) is aobvious
Show that utensil has self-luminous to be not required to the features such as backlight, thickness are thin, visual angle is wide, reaction speed is fast, to what is shown with deflection
Inherent advantage.But at present OLED industries still have very high technical threshold, processing procedure difficulty is big, yield is low, it is of high cost, sell
Valence is high, these difficult points all hamper the extensive use of OLED.
Liquid crystal display (Liquid Crystal Display, LCD) in contrast has longer development course,
The key technologies such as chromaticity stability, uniformity, reliability, high colour gamut, wide viewing angle are gradually overcome, are become at present on the market still
Occupy the display technology of dominant position.In face of the characteristic of OLED deflections, the research and development of flexible liquid crystal are gradually brought into schedule.
Hard screen display and the key difference of Flexible Displays are using polyimides (PI) substrate with deflection characteristic
Substitute traditional glass substrate, but in preparation process, flexible PI substrates be difficult to it is mutually compatible with existing liquid crystal preparation process,
It is be easy to cause simultaneously due to the problems such as relevant film thickness of PI substrate splay characteristics is uneven, device performance is unstable.Current solution
Mode be by preparing flexible PI substrates on the glass substrate, after the completion of device by remove means by flexible PI substrates with it is hard
The glass substrate of property is detached.From the point of view of the preparation of PI substrates and the separating technology with glass substrate, it is broadly divided into laser stripping
From with mechanical stripping two ways, wherein laser lift-off mode production capacity is relatively low and mechanical stripping causes yield inclined due to mechanical stress
It is low, it is required for being improved by corresponding mode.
Usually in the basic preparation flow of flexible liquid crystal device, after completing molding process, need CF respectively
Then (color film) side and Array (array) side stripping glass substrate carry out tying up for patch, chip and the flexible PCB partially of polaroid
The flows such as the assembling of fixed (IC＆FPC bonding), backlight module, wherein the process of stripping glass substrate is shone using front
The mode for penetrating glass substrate carries out, and one of major reason is that laser irradiation PI substrates will appear a degree of roughness
Increase problem, this point are conducive to carry by the uneven structure on surface for the interface that PI substrates are detached with glass substrate
Penetrance is risen, if further direct irradiation will appear to PI substrates and Array (array) film layers contact position due to PI substrates
The problem of Array (array) device performance caused by out-of-flatness declines.
Invention content
In order to solve the above-mentioned problems of the prior art, the purpose of the present invention is to provide one kind can be because of flexible base board
The display panel and its manufacturing method that array device performance caused by out-of-flatness declines.
According to an aspect of the present invention, a kind of manufacturing method of display panel is provided, the manufacturing method includes step：
A, first flexible substrate is formed on the first rigid substrate, and forms second flexible substrate on the second rigid substrate；B, institute
It states and completes array processes in first flexible substrate, to form multiple array areas, and complete color film in the second flexible substrate
Technique, to form multiple areas Cai Mo；C, the array area and the areas Cai Mo is made to correspond at box, to form multiple liquid crystal
Box；D, cutting separation is carried out to the liquid crystal cell；E, using first laser from the second rigid substrate side of the liquid crystal cell into
Row irradiation, the second rigid substrate and second flexible substrate of the liquid crystal cell are removed；F, using second laser from the liquid
First rigid substrate side of brilliant box is irradiated, and the first rigid substrate and first flexible substrate of the liquid crystal cell are shelled
From the wavelength of the second laser is less than the wavelength of the first laser.
Optionally, before the step A, the manufacturing method further includes：It is slow that first is formed on the first rigid substrate
Layer is rushed, and second buffer layer is formed on the second rigid substrate.
Optionally, the manufacturing method further includes：The first buffer layer and the second buffer layer are carried out respectively clear
It washes.
Optionally, after the step D, and before the step E, the manufacturing method further includes：To the liquid
Brilliant box carries out first time lighting test.
Optionally, after the step E, and before the step F, the manufacturing method further includes：Described
Two flexible base boards, one lateral deviation pastes the second polaroid.
Optionally, the manufacturing method further includes：Liquid crystal cell to posting second polaroid partially carries out at second point
Lamp test.
Optionally, the manufacturing method further includes：Liquid crystal cell to posting second polaroid partially carries out chip and soft
Property circuit board binding technique.
Optionally, after the step F, the manufacturing method further includes：It is pasted in one lateral deviation of the first flexible substrate
First polaroid.
Optionally, first rigid substrate and second rigid substrate are glass substrate；Described first flexible base
Plate and the second flexible substrate are polyimide substrate.
According to another aspect of the present invention, a kind of display panel manufactured by above-mentioned manufacturing method is additionally provided.
Beneficial effects of the present invention：The present invention uses the rigid substrate of the different laser lift-off both sides of wavelength, thus will not
There is the problem of array device performance caused by flexible base board out-of-flatness declines.
Description of the drawings
What is carried out in conjunction with the accompanying drawings is described below, above and other aspect, features and advantages of the embodiment of the present invention
It will become clearer, in attached drawing：
Figure 1A to Fig. 1 F is the processing procedure figure of display panel according to an embodiment of the invention；
Fig. 2 is the flow chart of the production method of display panel according to an embodiment of the invention.
Specific implementation mode
Hereinafter, with reference to the accompanying drawings to detailed description of the present invention embodiment.However, it is possible to come in many different forms real
The present invention is applied, and the present invention should not be construed as limited to the specific embodiment illustrated here.On the contrary, providing these implementations
Example is in order to explain the principle of the present invention and its practical application, to make others skilled in the art it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.
In the accompanying drawings, for the sake of clarity, the thickness of layer and region is exaggerated.Identical label is always shown in the accompanying drawings
Identical element.
Figure 1A to Fig. 1 F is the processing procedure figure of display panel according to an embodiment of the invention.Fig. 2 is reality according to the present invention
Apply the flow chart of the production method of the display panel of example.
A and Fig. 2 referring to Fig.1 forms first flexible substrate 210 in step S210 on the first rigid substrate 110, and
Second flexible substrate 220 is formed on the second rigid substrate 120.
Here, the first rigid substrate 110 and the second rigid substrate 120 may be used glass and be made, and first flexible substrate
210 and second flexible substrate 220 can be made of polyimides (PI), but the present invention is not restricted to this.
In addition, as another embodiment of the present invention, it, can be first in the first rigid substrate before carrying out step S210
First buffer layer (not shown) is formed on 110, and can also be formed second buffer layer on present second rigid substrate 120 and (not shown
Go out)；So in another embodiment, first flexible substrate 210 is formed in first buffer layer, and second flexible substrate 220
It is formed in second buffer layer.
Further, it as another embodiment of the invention, is respectively formed in first buffer layer and second buffer layer
Before first flexible substrate 210 and second flexible substrate 220, can also film layer first be carried out to first buffer layer and second buffer layer
Cleaning.
B and Fig. 2 referring to Fig.1 completes array processes in step S220 in first flexible substrate 210, multiple to be formed
Array area 310；And color membrane process is completed in second flexible substrate 220, to form multiple areas Cai Mo 320.
Here, there is multiple Array (array) device, which can be film crystal in each array area 310
The devices such as pipe.
C and Fig. 2 referring to Fig.1 makes array area 310 and the areas Cai Mo 320 correspond into box, to be formed in step S230
Multiple liquid crystal cells 300.
Here, the quantity in the areas array area 310 and Cai Mo 320 is identical, and the two, which corresponds, assembles box, and between
Filling liquid crystal is to form liquid crystal cell 300.
D and Fig. 2 referring to Fig.1 carries out cutting separation in step S240 to liquid crystal cell 300.
As another embodiment of the invention, after having carried out step S240, first can be carried out to liquid crystal cell 300
Secondary lighting test.
E and Fig. 2 referring to Fig.1, in step s 250, using second laser L2 from the second rigid substrate 120 of liquid crystal cell 300
Side is irradiated, and the second rigid substrate 120 and second flexible substrate 220 of liquid crystal cell 300 are removed.
It, can also be in the side of second flexible substrate 220 after step S250 as another embodiment of the invention
The second polaroid (not shown) of patch partially.
As another embodiment of the invention, second can also be carried out to the liquid crystal cell 300 for posting the second polaroid partially
Secondary lighting test.
It, can also be to posting partially after having carried out second of lighting test as another embodiment of the invention
The liquid crystal cell 300 of two polaroids carries out chip and flexible PCB binds (IC＆FPC bonding) technique.
F and Fig. 2 referring to Fig.1, in step S260, using first laser L1 from the first rigid substrate 110 of liquid crystal cell 300
Side is irradiated, and the first rigid substrate 110 and first flexible substrate 210 of liquid crystal cell 300 are removed, second laser L2's
Wavelength is more than the wavelength of first laser L1.
First flexible substrate 210 and second flexible substrate 220 have a different penetrance characteristics, characteristic feature be
Visible light wave range (380-780nm) has the penetrance more than 80%, also as transparent material, brightness for display panel and
Coloration influence is smaller, and first flexible substrate 210 and the penetrance of second flexible substrate 220 subtract with the reduction of wavelength
It is small, and end in ultraviolet (UV) wave band, penetrance is defined as cut off close to 0 point.
Since the corresponding wavelength of penetrance cut off of first flexible substrate 210 is shorter, second flexible substrate 220 penetrates
The corresponding wavelength of rate cut off is longer, thus (i.e. wavelength is more than the penetrance cut-off of first flexible substrate 210 using longer wavelength
The corresponding wavelength of point) second laser L2 when being irradiated from 120 side of the second rigid substrate of liquid crystal cell 300, second laser
L2 can be absorbed by second flexible substrate 220, to generate laser lift-off effect.Part second laser L2 is penetrated and is exposed to liquid
110 side of the first rigid substrate of brilliant box 300, since the absorption of first flexible substrate 210 is relatively low, L2 pairs of second laser
One flexible base board 210 and the influence of the contact position of array device are greatly reduced, so as to avoid due to the first flexible base
The problem of array device performance caused by 210 out-of-flatness of plate declines.
It, can also be in first flexible substrate 210 after having carried out step S260 as another embodiment of the invention
One lateral deviation pastes the first polaroid (not shown).
After above-mentioned step, the manufacture of display panel or flexible display panels is completed.And use above-mentioned system
The display panel for making method manufacture is not in that the array device performance caused by first flexible substrate out-of-flatness declines
Problem.
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (10)
1. a kind of manufacturing method of display panel, which is characterized in that the manufacturing method includes step：
A, first flexible substrate is formed on the first rigid substrate, and forms second flexible substrate on the second rigid substrate；
B, array processes are completed in the first flexible substrate, to form multiple array areas, and in the second flexible substrate
The color membrane process of upper completion, to form multiple areas Cai Mo；
C, the array area and the areas Cai Mo is made to correspond at box, to form multiple liquid crystal cells；
D, cutting separation is carried out to the liquid crystal cell；
E, it is irradiated from the second rigid substrate side of the liquid crystal cell using first laser, by the second of the liquid crystal cell
Rigid substrate and second flexible substrate stripping；
F, it is irradiated from the first rigid substrate side of the liquid crystal cell using second laser, by the first of the liquid crystal cell
Rigid substrate and first flexible substrate stripping, the wavelength of the second laser are less than the wavelength of the first laser.
2. manufacturing method according to claim 1, which is characterized in that before the step A, the manufacturing method is also wrapped
It includes：First buffer layer is formed on the first rigid substrate, and forms second buffer layer on the second rigid substrate.
3. manufacturing method according to claim 2, which is characterized in that the manufacturing method further includes：Respectively to described
One buffer layer and the second buffer layer are cleaned.
4. manufacturing method according to claim 1, which is characterized in that after the step D, and the step E it
Before, the manufacturing method further includes：First time lighting test is carried out to the liquid crystal cell.
5. manufacturing method according to claim 1, which is characterized in that after the step E, and the step F it
Before, the manufacturing method further includes：The second polaroid is pasted in one lateral deviation of the second flexible substrate.
6. manufacturing method according to claim 5, which is characterized in that the manufacturing method further includes：It is described to posting partially
The liquid crystal cell of second polaroid carries out second of lighting test.
7. manufacturing method according to claim 5, which is characterized in that the manufacturing method further includes：It is described to posting partially
The liquid crystal cell of second polaroid carries out chip and flexible PCB binding technique.
8. manufacturing method according to claim 1, which is characterized in that after the step F, the manufacturing method is also wrapped
It includes：The first polaroid is pasted in one lateral deviation of the first flexible substrate.
9. manufacturing method according to claim 1, which is characterized in that first rigid substrate and the second rigid base
Plate is glass substrate；The first flexible substrate and the second flexible substrate are polyimide substrate.
10. a kind of display panel manufactured by claim 1 to 9 any one of them manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810080304.1A CN108333818B (en) | 2018-01-27 | 2018-01-27 | Display panel and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810080304.1A CN108333818B (en) | 2018-01-27 | 2018-01-27 | Display panel and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108333818A true CN108333818A (en) | 2018-07-27 |
| CN108333818B CN108333818B (en) | 2020-12-25 |
Family
ID=62926570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810080304.1A Active CN108333818B (en) | 2018-01-27 | 2018-01-27 | Display panel and method for manufacturing the same |
Country Status (1)
| Country | Link |
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| CN (1) | CN108333818B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111151894A (en) * | 2020-01-03 | 2020-05-15 | 深圳市华星光电半导体显示技术有限公司 | Special-shaped display panel and cutting method thereof |
| CN112388152A (en) * | 2019-08-16 | 2021-02-23 | 阳程科技股份有限公司 | Progressive pre-separation method for flexible display and additional circuit board |
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| CN111151894A (en) * | 2020-01-03 | 2020-05-15 | 深圳市华星光电半导体显示技术有限公司 | Special-shaped display panel and cutting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108333818B (en) | 2020-12-25 |
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