CN105892123A - Base color homogenizing method of flexible liquid crystal display - Google Patents
Base color homogenizing method of flexible liquid crystal display Download PDFInfo
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- CN105892123A CN105892123A CN201610359949.XA CN201610359949A CN105892123A CN 105892123 A CN105892123 A CN 105892123A CN 201610359949 A CN201610359949 A CN 201610359949A CN 105892123 A CN105892123 A CN 105892123A
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- ito
- film
- liquid crystal
- crystal display
- flexible liquid
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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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a base color homogenizing method of a flexible liquid crystal display. The method includes following steps of aging pretreatment, cleaning, gluing, exposing, developing and acid etching/demolding. The aging pretreatment step is added, aging treatment must be performed before putting an ito film into production, that is to say, pet is enabled to be pre-contracted through long-time baking at high temperature, so that deformation during subsequent processing is reduced; an indium tin oxide layer is recrystallized, so that stability of physiochemical properties of the indium tin oxide is improved. Due to improvement of the method, deformation caused by serious contraction of the ito film after being heated at high temperature and cooled is avoided effectively ; ito patterns are clean and dry, and serious or relatively serious wrinkling of the surface is avoided, so that base color homogenizing effect is realized.
Description
Technical field
The present invention relates to a kind of display technology field, particularly relate to a kind of background color uniform treatment method of flexible liquid crystal display.
Background technology
During existing lcd plant produced flexible liquid crystal display product, being substantially and carry out by normal technological process, go forward side by side trip temperature and the fine setting of the aspect such as process time, pressure, existing method there is the problem that
1) Film is after high temperature cooling, after baking such as pi height, acutely shrinks, and produces deformation, improves operation easier for subsequent handling.
2) Film is in front operation production process, the experience front baking of graph segments and the main solidification of pi of after bake, orientation operation, box operation processed hot-press solidifying after, surface produces serious or more serious degree fold, affect outward appearance, formation background color inequality.
Summary describes, and existing processing method cannot meet the demand in market.
Summary of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of background color uniform treatment method of flexible liquid crystal display, it is possible to avoid the problem that film forms permanent surface's fold in process of production.
For achieving the above object, the present invention provides a kind of background color uniform treatment method of flexible liquid crystal display, comprises the following steps:
Step 1, aging pretreatment: the polyethylene terephthalate on ito film is carried out high temperature and toasts for a long time, and indium tin oxide layer is carried out recrystallization so that ito film has stable chemical property and physical property；
Step 2, cleans: be carried out glass surface；
Step 3, gluing: use direct roller coat method that ito film is processed thin film；
Step 4, exposure: use quasi-parallel smooth exposure sources to carry out mask exposure；In exposure process, positivity photoresist is when reception is distributed in 365 nanometers and 420 nm ultraviolet light, under hydrone auxiliary, photochemical reaction can occur in atmosphere, the photoresistance film receiving ultraviolet can be decomposed to form the carboxyl (cooh) being easily soluble in room temperature weak base, and the part hidden by mask plate powder figure, then keep the physicochemical properties of the weak base of resistance to room temperature of photoresistance film itself；
Step 5, development: the weak base of resistance to room temperature has the photoresistance film contacted to dissolve in exposure process with ultraviolet, forms the photoresistance film figure consistent with exposure process mask plate patterns, carries out toasting and dry and strengthen photoresistance film and the adhesion of ito film；
Step 6, harsh/demoulding: the ito layer acid etching protected without photoresistance film is fallen, the photoresistance film on ito figure is removed, and logical sodium ion on ito figure is got rid of, form the clean ito figure being dried.
Wherein, glass surface, particularly as follows: first pass through hairbrush, ultrasonic, the physical method of high-pressure spraying, or the chemical method of surfactant, is carried out processing by the cleaning step in described step 2；Then drive air knife drying or far-infrared electromagnetic radiation heating methods that glass surface is dried process by high-speed fan；The pure air crossed finally by high efficiency filter carries out air-cooled process.
Wherein, the film forming thickness of the film processed of the ito film in described step 3 is typically between 1.5-2.5 micron.
Wherein, in described step 4, the precision of exposure can reach 10 microns or less than 10 microns.
Wherein, the method fallen without the ito layer acid etching of photoresistance film protection in described step 6 is: fallen by the ito layer acid etching protected without photoresistance film by the mixed liquor of the hydrochloric acid in high-temperature strong acid and low ratio nitric acid.
Wherein, the mode that in described step 6, sodium ion is got rid of is for by rinsing, air-dried, baking operation, getting rid of the sodium ion on ito figure.
The invention has the beneficial effects as follows: compared with prior art, the background color uniform treatment method of the flexible liquid crystal display that the present invention provides, the most existing technique of this method, it is additionally arranged aging pre-treatment step, this step carries out high temperature to the polyethylene terephthalate on ito film and toasts for a long time, and indium tin oxide layer is carried out recrystallization so that ito film has stable chemical property and physical property；Because polyethylene terephthalate pet shrinks this in after high-temperature process, and the ito film on pet, namely indium tin oxide layer physicochemical properties are unstable, need to crystallize through high temperature, to reach stable physics and chemical property, so before ito film puts into production, burin-in process must be carried out, namely toasted for a long time by high temperature, make pet preshrinking, thus the deformation during reducing following process, additionally make indium tin oxide layer carry out recrystallization, thus improve the stability of its physicochemical properties).The improvement of this method, is prevented effectively from ito film and occurs acutely shrinking after high temperature cooling, produce the phenomenons such as deformation, and ito figure is totally dried, and surface will not produce the phenomenon of serious or more serious degree fold, therefore reaches the uniform effect of background color.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the background color uniform treatment method of the flexible liquid crystal display of the present invention.
Detailed description of the invention
In order to more clearly state the present invention, below in conjunction with the accompanying drawings the present invention is further described.
Further referring to Fig. 1, the present invention provides a kind of background color uniform treatment method of flexible liquid crystal display, comprises the following steps:
Step S1, aging pretreatment: the polyethylene terephthalate on ito film is carried out high temperature and toasts for a long time, and indium tin oxide layer is carried out recrystallization so that ito film has stable chemical property and physical property；Because pet shrinks this in after high-temperature process, and the ito film on pet, namely indium tin oxide layer physicochemical properties are unstable, need to crystallize through high temperature, to reach stable physics and chemical property, so before ito film puts into production, it is necessary to carry out burin-in process, namely toasted for a long time by high temperature, make pet preshrinking, thus the deformation during reducing following process, additionally make indium tin oxide layer carry out recrystallization, thus improve the stability of its physicochemical properties；
Step S2, cleans: be carried out glass surface；Glass surface, particularly as follows: first pass through hairbrush, ultrasonic, the physical method of high-pressure spraying, or the chemical method of surfactant, is carried out processing by the cleaning step in step S2；Then drive air knife drying or far-infrared electromagnetic radiation heating methods that glass surface is dried process by high-speed fan；The pure air crossed finally by high efficiency filter carries out air-cooled process；
Step S3, gluing: use direct roller coat method that ito film is processed thin film；The method compares and fits through low viscosity coating fluid film processed；The film forming thickness of the film processed of the ito film in this step is typically between 1.5-2.5 micron；
Step S4, exposure: use quasi-parallel smooth exposure sources to carry out mask exposure；In exposure process, positivity photoresist is when reception is distributed in 365 nanometers and 420 nm ultraviolet light, under hydrone auxiliary, photochemical reaction can occur in atmosphere, the photoresistance film receiving ultraviolet can be decomposed to form the carboxyl (cooh) being easily soluble in room temperature weak base, and the part hidden by mask plate powder figure, then keep the physicochemical properties of the weak base of resistance to room temperature of photoresistance film itself；The precision of exposure can reach 10 microns or less than 10 microns；And air needs to keep certain humidity in this operation；
Step S5, development: the weak base of resistance to room temperature has the photoresistance film contacted to dissolve in exposure process with ultraviolet, forms the photoresistance film figure consistent with exposure process mask plate patterns, carries out toasting and dry and strengthen photoresistance film and the adhesion of ito film；
Step S6, harsh/demoulding: the ito layer acid etching protected without photoresistance film is fallen, the photoresistance film on ito figure is removed, and logical sodium ion on ito figure is got rid of, form the clean ito figure being dried；The method fallen without the ito layer acid etching of photoresistance film protection in this step is: fallen by the ito layer acid etching protected without photoresistance film by the mixed liquor of the hydrochloric acid in high-temperature strong acid and low ratio nitric acid；It addition, the mode that in this step, sodium ion is got rid of is for by rinsing, air-dried, baking operation, getting rid of the sodium ion on ito figure.
Situation compared to prior art, the background color uniform treatment method of the flexible liquid crystal display that the present invention provides, the most existing technique of this method, it is additionally arranged aging pre-treatment step, this step carries out high temperature to the polyethylene terephthalate on ito film and toasts for a long time, and indium tin oxide layer is carried out recrystallization so that ito film has stable chemical property and physical property；Because polyethylene terephthalate pet shrinks this in after high-temperature process, and the ito film on pet, namely indium tin oxide layer physicochemical properties are unstable, need to crystallize through high temperature, to reach stable physics and chemical property, so before ito film puts into production, burin-in process must be carried out, namely toasted for a long time by high temperature, make pet preshrinking, thus the deformation during reducing following process, additionally make indium tin oxide layer carry out recrystallization, thus improve the stability of its physicochemical properties).The improvement of this method, is prevented effectively from ito film and occurs acutely shrinking after high temperature cooling, produce the phenomenons such as deformation, and ito figure is totally dried, and surface will not produce the phenomenon of serious or more serious degree fold, therefore reaches the uniform effect of background color.
The present invention also has the advantage that
1) compared with prior art, the aging preconditioning technique that the present invention provides, last stage use can be started in the front engineering of LCD, in the case of not affecting normal process flow, preliminary ageing ito film before manufacture, it is to avoid be the problem that conductive film occurs violent contraction and fold in the pyroprocess manufactured without aging ito film.
2) this project has and implements (not affecting the front operation production order), easy to use, simple general-purpose, saving material, low cost and the feature such as applied widely before manufacture.
The several specific embodiments being only the present invention disclosed above, but the present invention is not limited to this, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (6)
1. the background color uniform treatment method of a flexible liquid crystal display, it is characterised in that comprise the following steps:
Step 1, aging pretreatment: the polyethylene terephthalate on ito film is carried out high temperature and toasts for a long time, and indium tin oxide layer is carried out recrystallization so that ito film has stable chemical property and physical property；
Step 2, cleans: be carried out glass surface；
Step 3, gluing: use direct roller coat method that ito film is processed thin film；
Step 4, exposure: use quasi-parallel smooth exposure sources to carry out mask exposure；In exposure process, positivity photoresist, when reception is distributed in 365 nanometers and 420 nm ultraviolet light, can occur photochemical reaction under hydrone auxiliary in atmosphere, and the photoresistance film receiving ultraviolet can be decomposed to form the carboxyl (cooh) being easily soluble in room temperature weak base；And the part hidden by mask plate powder figure, then keep the physicochemical properties of the weak base of resistance to room temperature of photoresistance film itself；
Step 5, development: the weak base of resistance to room temperature has the photoresistance film contacted to dissolve in exposure process with ultraviolet, forms the photoresistance film figure consistent with exposure process mask plate patterns, carries out toasting and dry and strengthen photoresistance film and the adhesion of ito film；
Step 6, harsh/demoulding: the ito layer acid etching protected without photoresistance film is fallen, the photoresistance film on ito figure is removed, and logical sodium ion on ito figure is got rid of, form the clean ito figure being dried.
The background color uniform treatment method of flexible liquid crystal display the most according to claim 1, it is characterized in that, glass surface, particularly as follows: first pass through hairbrush, ultrasonic, the physical method of high-pressure spraying, or the chemical method of surfactant, is carried out processing by the cleaning step in described step 2；Then drive air knife drying or far-infrared electromagnetic radiation heating methods that glass surface is dried process by high-speed fan；The pure air crossed finally by high efficiency filter carries out air-cooled process.
The background color uniform treatment method of flexible liquid crystal display the most according to claim 1, it is characterised in that the film forming thickness of the film processed of the ito film in described step 3 is typically between 1.5-2.5 micron.
The background color uniform treatment method of flexible liquid crystal display the most according to claim 1, it is characterised in that in described step 4, the precision of exposure can reach 10 microns or less than 10 microns.
The background color uniform treatment method of flexible liquid crystal display the most according to claim 1; it is characterized in that, the method fallen without the ito layer acid etching of photoresistance film protection in described step 6 is: fallen by the ito layer acid etching protected without photoresistance film by the mixed liquor of the hydrochloric acid in high-temperature strong acid and low ratio nitric acid.
The background color uniform treatment method of flexible liquid crystal display the most according to claim 1, it is characterised in that the mode that in described step 6, sodium ion is got rid of is for by rinsing, air-dried, baking operation, getting rid of the sodium ion on ito figure.
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| CN201610359949.XA CN105892123A (en) | 2016-05-27 | 2016-05-27 | Base color homogenizing method of flexible liquid crystal display |
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| CN201610359949.XA CN105892123A (en) | 2016-05-27 | 2016-05-27 | Base color homogenizing method of flexible liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287424A (en) * | 2018-01-29 | 2018-07-17 | 广东欧珀移动通信有限公司 | Display screen and electronic equipment |
| CN109406586A (en) * | 2017-08-18 | 2019-03-01 | 蓝思科技（长沙）有限公司 | Production method of carbon nano tube sensor and application thereof |
| CN111756896A (en) * | 2020-06-02 | 2020-10-09 | Oppo广东移动通信有限公司 | Glass shell assembly, manufacturing method thereof and electronic equipment |
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| JPH07231009A (en) * | 1994-02-16 | 1995-08-29 | Casio Comput Co Ltd | Connection structure of electronic parts and connecting method therefor and liquid crystal display module |
| KR100267208B1 (en) * | 1998-03-17 | 2000-10-16 | 최주식 | A thick film electroluminescence sheet and manufaturing method thereof |
| CN104120397A (en) * | 2014-07-31 | 2014-10-29 | 深圳市豪威薄膜技术有限公司 | Method and system for depositing indium tin oxide at low temperature |
| CN104375382A (en) * | 2014-03-31 | 2015-02-25 | 中能柔性光电（滁州）有限公司 | Graphical manufacturing method for flexible conducting film |
| CN204270735U (en) * | 2015-01-05 | 2015-04-15 | 深圳市信濠光电科技有限公司 | The full-automatic ageing oven of a kind of conductive film for touch screen tunnel type |
| CN204270736U (en) * | 2015-01-06 | 2015-04-15 | 深圳市信濠光电科技有限公司 | The full-automatic ageing oven of a kind of conductive film for touch screen |
-
2016
- 2016-05-27 CN CN201610359949.XA patent/CN105892123A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07231009A (en) * | 1994-02-16 | 1995-08-29 | Casio Comput Co Ltd | Connection structure of electronic parts and connecting method therefor and liquid crystal display module |
| KR100267208B1 (en) * | 1998-03-17 | 2000-10-16 | 최주식 | A thick film electroluminescence sheet and manufaturing method thereof |
| CN104375382A (en) * | 2014-03-31 | 2015-02-25 | 中能柔性光电（滁州）有限公司 | Graphical manufacturing method for flexible conducting film |
| CN104120397A (en) * | 2014-07-31 | 2014-10-29 | 深圳市豪威薄膜技术有限公司 | Method and system for depositing indium tin oxide at low temperature |
| CN204270735U (en) * | 2015-01-05 | 2015-04-15 | 深圳市信濠光电科技有限公司 | The full-automatic ageing oven of a kind of conductive film for touch screen tunnel type |
| CN204270736U (en) * | 2015-01-06 | 2015-04-15 | 深圳市信濠光电科技有限公司 | The full-automatic ageing oven of a kind of conductive film for touch screen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406586A (en) * | 2017-08-18 | 2019-03-01 | 蓝思科技（长沙）有限公司 | Production method of carbon nano tube sensor and application thereof |
| CN108287424A (en) * | 2018-01-29 | 2018-07-17 | 广东欧珀移动通信有限公司 | Display screen and electronic equipment |
| CN111756896A (en) * | 2020-06-02 | 2020-10-09 | Oppo广东移动通信有限公司 | Glass shell assembly, manufacturing method thereof and electronic equipment |
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Application publication date: 20160824 |