CN102693030A - Method for manufacturing touch display panel - Google Patents

Method for manufacturing touch display panel Download PDF

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Publication number
CN102693030A
CN102693030A CN2011100794905A CN201110079490A CN102693030A CN 102693030 A CN102693030 A CN 102693030A CN 2011100794905 A CN2011100794905 A CN 2011100794905A CN 201110079490 A CN201110079490 A CN 201110079490A CN 102693030 A CN102693030 A CN 102693030A
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CN
China
Prior art keywords
display panel
substrate
touch
making
thinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011100794905A
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Chinese (zh)
Inventor
陈新立
陈弘育
杨秋莲
彭家鹏
丁景隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innocom Technology Shenzhen Co Ltd
Innolux Shenzhen Co Ltd
Chi Mei Optoelectronics Corp
Original Assignee
Innolux Shenzhen Co Ltd
Chi Mei Optoelectronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innolux Shenzhen Co Ltd, Chi Mei Optoelectronics Corp filed Critical Innolux Shenzhen Co Ltd
Priority to CN2011100794905A priority Critical patent/CN102693030A/en
Publication of CN102693030A publication Critical patent/CN102693030A/en
Pending legal-status Critical Current

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Abstract

The invention provides a method for manufacturing a touch display panel, and aims to reduce the thickness and the weight of the touch display panel, simplify the manufacturing procedure and reduce the cost of the manufacturing procedure. The method comprises the following steps of: supplying a display panel which comprises a first substrate and a second substrate opposite to the first substrate; thinning the display panel to form a thinned display panel; and forming a touch sensor on the outer side surface of the thinned display panel.

Description

The method for making of touch control display panel
Technical field
The invention relates to display panel, and particularly relevant for a kind of touch control display panel and preparation method thereof.
Background technology
Along with science and technology progress with rapid changepl. never-ending changes and improvements; The application of consumption electronic products is also more and more diversified; In present many electronic products; Except with light, thin, short, little serve as main, (for example personal digital assistant (personal digital assistant, PDA) or mobile phone) is used touch panel (touch panel) to many portable electronic products widely.
Traditional touch control display panel is that contact panel and display panel are separated making, contact panel and display panel is fitted together again.Figure 1A-1B shows the sectional view of the method for making of known touch control display panel; In Figure 1A; Auxiliary by packaging plastic (sealant) 11 at first, component film transistor base 10 and colored optical filtering substrates 20 are so that form an accommodation space 13 between the two substrates; Afterwards, reinject liquid crystal layer 15 in accommodation space 13.Afterwards, see also 1B figure, utilize glue 25 to fit on the colored optical filtering substrates 20 contact panel 30 again.
Yet, because thin film transistor base plate 10 has certain thickness separately with colored optical filtering substrates 20, add the thickness of contact panel 30 and glue 25 afterwards, make the thickness of whole touch panel and weight improve.
Therefore, industry is needed the method for making of a kind of touch control display panel of development badly, and this method for making can reduce the thickness and the weight of touch control display panel, and then simplifies processing procedure and reduce the processing procedure cost.
Summary of the invention
The present invention provides a kind of method for making of touch control display panel, may further comprise the steps: a display panel is provided, and wherein display panel comprises one first substrate and one second substrate that is oppositely arranged; This display panel of thinning (thinning) is to form the display panel of a thinning; And form a touch-control sensing element (touch sensor) on an outer surface of the display panel after the thinning.
In sum; The present invention makes the thickness of whole touch control display panel 200 and weight be minimized, to reach frivolous purpose by after thin film transistor base plate 210 and colored optical filtering substrates 230 are assembled, carrying out the thinning processing procedure; In addition; Can avoid liquid crystal layer 220 to receive temperatures involved, and then can avoid producing the problem of colour cast in the method for making that forms touch-control sensing element 240 back injection liquid crystal layers 220 by an embodiment of the present invention.
Description of drawings
For let above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, elaborate below in conjunction with the accompanying drawing specific embodiments of the invention, wherein:
Figure 1A~1B is a series of sectional views, in order to the flow process of method for making that known touch control display panel (touch panel) is described.
Fig. 2 A~2D is a series of sectional views, in order to the flow process of explanation first embodiment of the invention.
Fig. 3 A~3C is a series of sectional views, in order to the flow process of explanation second embodiment of the invention.
The main element symbol description:
10~thin film transistor base plate
11~packaging plastic (sealant)
13~accommodation space
15~liquid crystal layer
20~colored optical filtering substrates
25~glue
30~contact panel
200~touch control display panel
210~thin film transistor base plate
The thin film transistor base plate of 210a~thinning
215~encapsulants (sealant)
217~opening
220~liquid crystal layer
230~colored optical filtering substrates
The colored optical filtering substrates of 230a~thinning
One surface of 232~colored optical filtering substrates away from thin film transistor base plate
235~accommodation space
240~touch-control sensing element
310~display panel
The display panel of 310a~thinning
Embodiment
The present invention provides the method for making of a kind of touch control display panel (touch panel), may further comprise the steps: a display panel is provided, and wherein display panel comprises one first substrate and one second substrate that is oppositely arranged; This display panel of thinning (thinning); And form a touch-control sensing element (touch sensor) on an outer surface of the display panel after the thinning.In an embodiment of the present invention, color filter element is formed on the surface of close second substrate of first substrate, so first substrate is called colored optical filtering substrates in an embodiment of the present invention; In like manner, second substrate is called thin film transistor base plate.It is example that embodiment is disclosed the content of showing with Fig. 2 A-3C.
Fig. 2 A-2D shows that touch control display panel is in the sectional view of each process stage.Method for making may further comprise the steps, and at first, sees also Fig. 2 A, provide one have thin film transistor base plate (TFT substrate) 210 and a colored optical filtering substrates 230 display panel 310, wherein the thickness of thin film transistor base plate is about d 1, and the thickness of colored optical filtering substrates 230 is about d 2, two thickness d 1, d 2Can equate or unequal.In an embodiment; The method for making of display panel 310 comprises first assembling (assemble) thin film transistor base plate 210 and colored optical filtering substrates 230, before the assembling two substrates, can be earlier in inner peripheral printing (printing) encapsulants (sealant) 215 of thin film transistor base plate 210 or colored optical filtering substrates 230; Afterwards two substrates is fitted each other; Colored optical filtering substrates 230 is provided with respect to thin film transistor base plate 210,, and stays an opening 217 with formation accommodation space (space) 235.
Above-mentioned thin film transistor base plate 210 comprises substrate and array layer (array layer) (not shown), and substrate comprises glass, quartz, plastic cement, resin or other materials that is fit to, and substrate commonly used for example is a glass.Array layer comprises pixel control structure (not shown) such as thin-film transistor structure, pixel electrode, sweep trace and data line.
Color filter element on the colored optical filtering substrates 230 also comprises colored filter and black matrix" (black matrix; BM) (not shown); Wherein colored filter comprises Red lightscreening plate, blue color filter and green color filter, and black matrix" (BM) is between various different colours optical filters.
Afterwards; See also Fig. 2 B, thinning (thinning) display panel 310, i.e. thinning thin film transistor base plate 210 or colored optical filtering substrates 230; In this figure; Thin film transistor base plate 210 of thinning (thinning) simultaneously and colored optical filtering substrates 230, with the thin film transistor base plate 210a of formation thinning and the colored filter substrate 230a of thinning, wherein the thickness of colored optical filtering substrates 210 is by d 1Become d 3, and the thickness of thin film transistor base plate 230 is from d 2Become d 4, same, thickness d 3, d 4Can be identical or unequal.The step of above-mentioned thinning can be used the thinning step of physics mode (for example lapping mode) or chemical mode (for example etching mode).
It is noted that; In an embodiment, by this thinning step, the thickness that can make thin film transistor base plate 210 or colored optical filtering substrates 230 is lowered into thickness from about 0.5mm and is the thin film transistor base plate 210a of the thinning of about 0.3mm or the colored filter substrate 230a of thinning; Thus; Display panel 310a integral thickness after the thinning can be lowered into 0.6mm from about 1.0mm, and in a preferred embodiment, the display panel 310a integral thickness of thinning more can be reduced to 0.4mm.
Then; See also Fig. 2 C; Form touch-control sensing element (touch sensor) 240 on the outer surface 232 of the display panel 310a of thinning, promptly touch-control sensing element 240 is formed on the surface 232 away from the thin film transistor base plate 210a of thinning of colored optical filtering substrates 230a of thinning.
In an embodiment; The method that forms touch-control sensing element 240 comprises carries out deposition manufacture process; Directly form transparency conducting layer on the surface 232 away from the thin film transistor base plate 210a of thinning of the colored optical filtering substrates 230a of thinning; Wherein deposition manufacture process comprise chemical vapour deposition technique (chemical vapor deposition, CVD) or physical vaporous deposition (physical vapor deposition, PVD).In addition, after the deposit transparent conductive layer, still can carry out patterning process, to form patterned transparent conductive layer.
In addition; Before the step of carrying out Fig. 2 D; Also comprise annealing (anneal) touch-control sensing element 240; The special patterned transparent conductive layer that is directed against in the touch-control sensing element 240 is carried out annealing steps, and the purpose of carrying out this step is, is used to reduce the sheet resistance (sheet resistance) of transparency conducting layer.Moreover, after forming patterned transparent conductive layer, also be included in and form metal level, dielectric layer and protective seam etc. on the patterned transparent conductive layer in regular turn.
The material of above-mentioned transparency conducting layer comprises tin indium oxide (indium tin oxide; ITO), indium zinc oxide (indium zinc oxide, IZO), cadmium tin (cadmium tin oxide, CTO), aluminum zinc oxide (aluminum zinc oxide; AZO), tin indium oxide zinc (indium tin zinc oxide; ITZO), zinc paste (zinc oxide), cadmium oxide (cadmium oxide, CdO), hafnia (hafnium oxide, HfO), indium oxide gallium zinc (indium gallium zinc oxide; InGaZnO), indium oxide gallium zinc-magnesium (indium gallium zinc magnesium oxide; InGaZnMgO), indium oxide gallium magnesium (indium gallium magnesium oxide, InGaMgO) or indium oxide gallium aluminium (indium gallium aluminum oxide, InGaAlO).
In another embodiment, the method that forms touch-control sensing element 240 comprises by a sticker (not shown), touch-control sensing element 240 fitted on the surface 232 away from the thin film transistor base plate 210a of thinning of colored optical filtering substrates 230a of thinning.
Afterwards, see also Fig. 2 D, after forming touch-control sensing element 240, inject (injecting) liquid crystal layer 220 between colored optical filtering substrates 230a and thin film transistor base plate 210a.Specifically, inject (injecting) liquid crystal layer 220 in accommodation space 235 from opening 217, finally sealed opening 217 in case solution stopping crystal layer 220 exposes, is just accomplished the touch control display panel 200 of this case in this.
In another embodiment; Also can before forming touch-control sensing element 240, inject liquid crystal layer 220 between colored optical filtering substrates 230a and thin film transistor base plate 210a, even in 2B figure step; Can before the thinning step, carry out the step that liquid crystal layer 220 injects; Or in the 2A figure step, after having assembled colored optical filtering substrates 230 and thin film transistor base plate 210, carry out the step that liquid crystal layer 220 injects.
It is noted that, in known technology, please refer again to Figure 1B,, therefore, when adding the thickness of contact panel 30, can make the thickness of integral member improve because thin film transistor base plate 10 has certain thickness separately with colored optical filtering substrates 20.And in the first embodiment of the invention; Before forming touch-control sensing element 240; Earlier the display panel 310 that assembles is carried out the thinning step, promptly reduce the thickness of thin film transistor base plate 210 and colored optical filtering substrates 230 two substrates, and then reduce the thickness of whole touch control display panel 200.
In addition; Another advantage of first embodiment is; The present invention is formed at touch-control sensing element 240 on the colored optical filtering substrates 230a of thinning earlier, carries out high-temperature annealing step again, then just injects liquid crystal layer 220; Therefore, liquid crystal layer 220 can be avoided causing colour cast (color shift) problem because of high-temperature step.
In addition, the present invention provides one second embodiment in addition, and Fig. 3 A-3C figure shows touch control display panel in the sectional view of each process stage, and the identical person with Fig. 2 A-2D of label represents similar elements among the figure.
See also Fig. 3 A; One display panel 310 at first is provided; Wherein display panel 300 comprises thin film transistor base plate (TFT substrate) 210 and the colored optical filtering substrates 230 that is oppositely arranged; And liquid crystal layer 220 is formed between thin film transistor base plate 210 and the colored optical filtering substrates 230, and wherein the thickness of thin film transistor base plate is about d 1, and the thickness of colored optical filtering substrates 230 is about d 2, two thickness d 1, d 2Can equate or unequal.
In an embodiment; The method for making of display panel 310 comprises first assembling (assemble) thin film transistor base plate 210 and colored optical filtering substrates 230; Before the assembling two substrates; Can afterwards two substrates be fitted each other earlier in inner peripheral printing (printing) encapsulants (sealant) 215 of thin film transistor base plate 210 or colored optical filtering substrates 230, colored filter substrate 230 is provided with respect to thin film transistor base plate 210; To form accommodation space 235, again liquid crystal layer 220 is injected (injection) accommodation space 235 afterwards.
In another embodiment; The method for making of display panel 310 comprises provides thin film transistor base plate 210; First inner peripheral printing (printing) encapsulants (sealant) 215 at thin film transistor base plate 210, afterwards, by a liquid crystal drop-method (one drop filling; ODF); Liquid crystal layer 220 is formed on the thin film transistor base plate 210, and component film transistor base 210 and colored optical filtering substrates 230 more at last are so that liquid crystal layer 220 is formed between colored filter substrate 230 and this thin film transistor base plate 210.Same; The method for making of display panel 310 also can comprise provides colored optical filtering substrates 230; First inner peripheral printing (printing) encapsulants (sealant) 215 at colored optical filtering substrates 230, afterwards, by a liquid crystal drop-method (one dropfilling; ODF); Liquid crystal layer 220 is formed on the colored optical filtering substrates 230, and component film transistor base 210 and colored optical filtering substrates 230 more at last are so that liquid crystal layer 220 is formed between colored filter substrate 230 and this thin film transistor base plate 210.
Then; See also Fig. 3 B, thinning (thinning) display panel 310, i.e. thinning thin film transistor base plate 210 or colored optical filtering substrates 230; In this figure; Be thin film transistor base plate 210 of thinning (thinning) simultaneously and colored optical filtering substrates 230, with the thin film transistor base plate 210a of formation thinning and the colored filter substrate 230a of thinning, wherein the thickness of colored optical filtering substrates 210 is by d 1Become d 3, and the thickness of thin film transistor base plate 230 is from d 2Become d 4, same, thickness d 3, d 4Can be identical or unequal.The step of above-mentioned thinning can be used the thinning step of physics mode (for example lapping mode) or chemical mode (for example etching mode).
Afterwards; See also Fig. 3 C; Form touch-control sensing element (touch sensor) 240 on the surface 232 away from the thin film transistor base plate 210a of thinning of the colored optical filtering substrates 230a of thinning; Just accomplish touch control display panel 200 in this, the detailed step that wherein forms touch-control sensing element 240 repeats no more at this with the above.
Touch panel of the present invention can be proceeded successive process; For example form a polaroid (polarizer) on the touch-control sensing element, form a glass (cover glass) on polaroid, and form another polaroid under thin film transistor base plate.Those skilled in the art also can be according to the demand of actual processing procedure, form other elements on the touch control display panel 200 or under.
Touch control display panel of the present invention can be applicable to LCD (liquid crystal display; LCD); For example plane switching liquid crystal display (in-plane switching, IPS LCD) or fringe field switch LCD (fringe field switching, FFS LCD).
In the embodiments of the invention; All being arranged on the surface of colored optical filtering substrates 230a (first substrate) with touch-control sensing element 240 is example; But in other embodiments, touch-control sensing element 240 also can be arranged on the surface of thin film transistor base plate 210a, but neither as limit.
In sum; The present invention makes the thickness of whole touch control display panel 200 and weight be minimized, to reach frivolous purpose by after thin film transistor base plate 210 and colored optical filtering substrates 230 are assembled, carrying out the thinning processing procedure; In addition; Can avoid liquid crystal layer 220 to receive temperatures involved, and then can avoid producing the problem of colour cast in the method for making that forms touch-control sensing element 240 back injection liquid crystal layers 220 by an embodiment of the present invention.
Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little modification and perfect, so protection scope of the present invention is when being as the criterion with what claims defined.

Claims (13)

1. the method for making of a touch control display panel may further comprise the steps:
One display panel is provided, and wherein this display panel comprises one first substrate and one second substrate that is oppositely arranged;
This display panel of thinning is to form the display panel of a thinning; And
Form a touch-control sensing element on an outer surface of the display panel of this thinning.
2. the method for making of touch control display panel as claimed in claim 1 is characterized in that, the method for making of this display panel of thinning comprises:
This first substrate of thinning or this second substrate.
3. the method for making of touch control display panel as claimed in claim 1 is characterized in that, the method for making of this display panel of thinning comprises:
This first substrate of thinning and this second substrate.
4. the method for making of touch control display panel as claimed in claim 1 is characterized in that, the method for making of this display panel comprises:
This first substrate and this second substrate are provided;
By a liquid crystal drop-method, a liquid crystal layer is formed on this first substrate or this second substrate;
Assemble this first substrate and this second substrate, so that this liquid crystal layer is formed between this first substrate and this second substrate.
5. the method for making of touch control display panel as claimed in claim 1 also comprises:
After forming this touch-control sensing element, inject a liquid crystal layer between this first substrate and this second substrate.
6. the method for making of touch control display panel as claimed in claim 1 also comprises:
Before forming this touch-control sensing element, inject a liquid crystal layer between this first substrate and this second substrate.
7. the method for making of touch control display panel as claimed in claim 1 also comprises:
Form on the surface of close this second substrate of this first substrate of a color filter element in this display panel, and
Form on the surface away from this second substrate of this first substrate of this touch-control sensing element in this display panel.
8. the method for making of touch control display panel as claimed in claim 7 is characterized in that, the method that forms this touch-control sensing element comprises:
Carry out a deposition manufacture process, directly form a transparency conducting layer on a surface away from this second substrate of this first substrate; And
This transparency conducting layer of patterning is to form a patterned transparent conductive layer.
9. the method for making of touch control display panel as claimed in claim 8 is characterized in that, forms after this patterned transparent conductive layer, still may further comprise the steps:
The anneal transparency conducting layer of this patterning.
10. the method for making of touch control display panel as claimed in claim 8 is characterized in that, this deposition manufacture process comprises chemical vapour deposition technique or physical vaporous deposition.
11. the method for making of touch control display panel as claimed in claim 8; It is characterized in that the material of this transparency conducting layer comprises tin indium oxide, indium zinc oxide, cadmium tin, aluminum zinc oxide, tin indium oxide zinc, zinc paste, cadmium oxide, hafnia, indium oxide gallium zinc, indium oxide gallium zinc-magnesium, indium oxide gallium magnesium or indium oxide gallium aluminium.
12. the method for making of touch control display panel as claimed in claim 7 is characterized in that, the method that forms this touch-control sensing element comprises:
By a sticker, this touch-control sensing element is fitted on the surface away from this second substrate of this first substrate in this display panel.
13. the method for making of touch control display panel as claimed in claim 1 also comprises:
Form on the surface of close this second substrate of this first substrate of a thin-film transistor element in this display panel, and
Form on the surface away from this second substrate of this first substrate of this touch-control sensing element in this display panel.
CN2011100794905A 2011-03-21 2011-03-21 Method for manufacturing touch display panel Pending CN102693030A (en)

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CN104880847A (en) * 2015-06-18 2015-09-02 深圳市华星光电技术有限公司 IPS-type On Cell touch display panel and manufacturing method thereof
CN104898318A (en) * 2015-06-29 2015-09-09 深圳市华星光电技术有限公司 IPS-type In Cell touch display panel and manufacturing method
CN104898913A (en) * 2015-06-29 2015-09-09 深圳市华星光电技术有限公司 Mutual-capacitance touch display panel and manufacturing method thereof
CN106066731A (en) * 2016-05-27 2016-11-02 京东方科技集团股份有限公司 A kind of touch-control display panel and preparation method thereof, touch control display apparatus
CN109100886A (en) * 2017-06-20 2018-12-28 群创光电股份有限公司 Display device and its operating method

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CN101739174A (en) * 2009-12-29 2010-06-16 友达光电股份有限公司 Touch display panel and touch substrate

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Publication number Priority date Publication date Assignee Title
CN104880847A (en) * 2015-06-18 2015-09-02 深圳市华星光电技术有限公司 IPS-type On Cell touch display panel and manufacturing method thereof
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CN104898318A (en) * 2015-06-29 2015-09-09 深圳市华星光电技术有限公司 IPS-type In Cell touch display panel and manufacturing method
CN104898913A (en) * 2015-06-29 2015-09-09 深圳市华星光电技术有限公司 Mutual-capacitance touch display panel and manufacturing method thereof
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CN104898318B (en) * 2015-06-29 2018-10-26 深圳市华星光电技术有限公司 IPS type In Cell touch-control display panels and preparation method thereof
CN106066731A (en) * 2016-05-27 2016-11-02 京东方科技集团股份有限公司 A kind of touch-control display panel and preparation method thereof, touch control display apparatus
CN109100886A (en) * 2017-06-20 2018-12-28 群创光电股份有限公司 Display device and its operating method
CN109100886B (en) * 2017-06-20 2021-08-31 群创光电股份有限公司 Display device and operation method thereof

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Application publication date: 20120926