KR101510226B1 - Display device glass thermal transferring method - Google Patents

Display device glass thermal transferring method Download PDF

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Publication number
KR101510226B1
KR101510226B1 KR20140058879A KR20140058879A KR101510226B1 KR 101510226 B1 KR101510226 B1 KR 101510226B1 KR 20140058879 A KR20140058879 A KR 20140058879A KR 20140058879 A KR20140058879 A KR 20140058879A KR 101510226 B1 KR101510226 B1 KR 101510226B1
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South Korea
Prior art keywords
ink layer
ink
glass
tsp
layers
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KR20140058879A
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Korean (ko)
Inventor
이승해
Original Assignee
주식회사 씨아이씨티
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Abstract

Disclosed are a method to form an ink layer for the prevention of a TSP lamination defect and a method to thermally transfer a glass of a display device including the same. According to an embodiment of the present invention, when multiple ink layers are formed on a side of a release film, a second ink layer is additionally formed on an upper part of a first ink layer, which is adjacent to the release film, but the second ink layer is formed to surround an inner end of the first ink layer.

Description

DISPLAY DEVICE GLASS THERMAL TRANSFERRING METHOD [0002]

Embodiments of the present invention relate to a method of forming an ink layer for preventing TSP lamination failure and a glass thermal transfer method of a display device including the method. More particularly, the present invention relates to a method of forming a touch screen panel (hereinafter referred to as TSP) The present invention relates to a method of forming an ink layer for preventing defective TSP lamination and a glass thermal transfer method of a display device including the same.

In general, mobile phones are communication devices that are indispensable in modern society, and their functions are diversified beyond imagination. As the functions of the mobile phone become diversified, the IT technology accumulated in the mobile phone itself is complex, and accordingly, the product unit price is increasing.

Conventional display windows mounted on mobile phones or the like are made of acrylic resin or the like, which is a synthetic resin material that is inexpensive and easy to manufacture.

However, due to the characteristics of such synthetic resin, it is vulnerable to heat and scratches, the transmittance is worse than that of glass, and battery consumption is increased when brightness is increased for a clear screen. Therefore, recently introduced mobile display devices such as smart phones and tablet PCs Glass (especially, tempered glass) materials are often used in equipment.

As is well known, a glass of a display device is provided in a form in which a predetermined glass pattern is thermally transferred in order to realize appearance aesthetics and other functional effects.

1 is a process diagram showing a method of applying an ink layer to a glass according to a conventional method.

Referring to FIG. 1, a plurality of ink layers 20, 30, and 40 are formed in a step-like manner directly on a glass (or synthetic resin film) 10 by printing. The plurality of ink layers will be referred to as a first ink layer 20, a second ink layer 30, and a third ink layer 40 for convenience of explanation.

According to the conventional method, when the second ink layer 30 is formed on the first ink layer 20, the second ink layer 30 is formed by giving a first offset f1 to the inner side surface . When the third ink layer 40 is formed on the second ink layer 30, the third ink layer 40 is formed by giving a second offset f2 to the inner side surface. Here, the magnitudes of the first and second offsets f1 and f2 may be changed little by little in accordance with the process conditions, so that it need not be limited to a specific numerical range.

FIG. 2 is a process diagram showing a state in which TSP lamination failure occurs when a plurality of ink layers are formed stepwise with an offset for each ink layer according to the conventional method described above.

Referring to FIG. 2, when the illustrated first, second and third ink layers 20, 30 and 40 are formed in a stepped shape, a TSP (touch screen) Panel (50), a clearance space (Z) appears.

If air bubbles are generated in the clearance space Z between the first, second and third ink layers 20, 30 and 40 and the TSP 50, , And the edge portion of the silver paste pattern was adversely affected by cracks. Reference numeral I denotes ITO (Indium Tin Oxide).

Related prior art is Korean Patent Publication No. 2012-0110784 (published on October 10, 2012), which discloses a technology relating to a window glass printing apparatus.

The present invention relates to a method of forming an ink layer for preventing defective TSP lamination which can improve quality of appearance of a product by preventing quality defects occurring when a TSP is laminated after thermally transferring an ink layer to a glass, The present invention provides a glass thermal transfer method for a display device including a display device.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, when forming a plurality of ink layers on one side of a release film, a second ink layer is further formed on the first ink layer formed near the release film, Is formed so as to surround an inner end of the first ink layer. Thus, when a plurality of ink layers are formed on one side of the release film, and then the plurality of ink layers are thermally transferred onto the surface of the glass, and a TSP (Touch Screen Panel) is laminated on the plurality of thermally-transferred ink layers, It is possible to prevent defects appearing at the inner end of the ink layer of the ink-jet head.

In addition, when the third ink layer is further formed on the second ink layer, the third ink layer may be formed to surround the inner end of the second ink layer.

In addition, the second ink layer may be formed larger than the first ink layer, and the third ink layer may be formed larger than the second ink layer.

And the inner end of the third ink layer may be formed in accordance with a predetermined number of the standard with reference to a view area region of the glass.

And inner ends of the first ink layer, the second ink layer and the third ink layer may be rounded.

According to another aspect of the present invention, when a plurality of ink layers including first, second and third ink layers are formed on one surface of a release film, an upper portion of the first ink layer formed near the release film Wherein the second ink layer is formed to be smaller than the first ink layer and the third ink layer is formed on the second ink layer to be larger than the first ink layer, And the ink layer is formed so as to surround the inner end of the first ink layer.

The inner end of the third ink layer may be formed in accordance with a predetermined number of the standard with reference to a view area region of the glass.

And inner ends of the first ink layer, the second ink layer and the third ink layer may be rounded.

According to still another aspect of the present invention, there is provided a method of manufacturing a light emitting device, comprising the steps of: forming a plurality of ink layers including first, second, third and fourth ink layers on one side of a release film; Wherein the second ink layer is formed on the first ink layer to have a size smaller than the first ink layer and the third ink layer formed on the second ink layer is formed smaller than the second ink layer, The fourth ink layer may be formed on the upper portion of the ink layer to be larger than the first ink layer and the fourth ink layer may be formed to surround the inner end of the first ink layer have.

The inner end of the fourth ink layer may be formed in accordance with a predetermined number of the standard with reference to a view area region of the glass.

And inner ends of the first ink layer, the second ink layer, the third ink layer and the fourth ink layer may be rounded.

According to another aspect of the present invention, there is provided an ink-layer forming method using the ink-layer-forming method. And a glass thermal transfer step of performing thermal transfer by bringing the glass into contact with a plurality of ink layers formed on the release film in a face-to-face manner.

In addition, after the glass thermal transfer step, a TSP forming step may be performed to join the TSP (Touch Screen Panel) to the plurality of inks thermally transferred to the glass.

According to an embodiment of the present invention, it is possible to prevent quality defects that may occur when the ink layer is thermally transferred to a glass and then laminate the TSP, thereby improving the appearance of the product and improving the quality reliability.

Particularly, when a plurality of ink layers are formed in a stepwise manner with an offset in the ink layer according to the conventional method, it is possible to prevent defects such as bubbles appearing at the edge of the stairs in the case of TSP lamination or cracks appearing in forming a silver paste pattern .

1 is a process diagram showing a method of applying an ink layer to a glass according to a conventional method.
FIG. 2 is a process diagram showing a state in which TSP lamination failure occurs when a plurality of ink layers are formed in a stepwise manner with an offset for each ink layer according to a conventional method.
3 is a flowchart of an ink layer formation method for preventing TSP failure according to embodiments of the present invention and a glass thermal transfer method of a display device including the same.
4 is a process chart showing an ink layer forming method according to the first embodiment of the present invention.
5 is a process diagram showing a method of forming an ink layer according to a second embodiment of the present invention.
6 is a process chart showing an ink layer forming method according to a third embodiment of the present invention.
FIG. 7 and FIG. 8 are process drawings of a glass thermal transfer step according to embodiments of the present invention.
9 and 10 are process diagrams of a TSP forming step according to embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Hereinafter, a method of forming an ink layer for preventing defective TSP lamination according to embodiments of the present invention and a glass thermal transfer method of a display device including the same will be described in detail with reference to the accompanying drawings.

FIG. 3 is a flowchart of a glass thermal transfer method of a display device including a method of forming an ink layer for preventing TSP failure according to an embodiment of the present invention. And FIGS. 4 to 10 show process steps of the detailed steps thereof.

Ink layer forming step (S100)

This step is an ink layer forming step, in which a plurality of ink layers are formed on the release film.

The method of forming the ink layer in this step may include three embodiments. Each embodiment relating to an ink layer forming method will be described with reference to the drawings.

4 is a process diagram showing an ink layer forming method according to the first embodiment of the present invention.

Referring to FIG. 4, a plurality of ink layers 200, 300, and 400 may be formed on top of the illustrated release film 100.

For example, the plurality of ink layers may be referred to as a first ink layer 200, a second ink layer 300, and a third ink layer 400 in the order in which the release film 100 is formed.

The second ink layer 300 provided on the first ink layer 200 may be formed to surround the inner end of the first ink layer 200.

The third ink layer 400 formed on the second ink layer 300 may be formed to surround the inner end of the second ink layer 300.

For this, the second ink layer 300 may be formed to be larger than the first ink layer 200 so as to completely surround the upper and inner ends of the first ink layer 200. Similarly, the third ink layer 400 may be formed to be larger than the second ink layer 300 so as to completely surround the upper and inner ends of the second ink layer 300.

In particular, it is preferable that the inner end of the third ink layer 400 is formed in accordance with a dimension determined in accordance with the view area of the glass, that is,

The inner end of each of the first ink layer 200, the second ink layer 300, and the third ink layer 400 may be rounded. However, it is not necessarily limited to the round shape shown in Fig. 4, and may be formed in various other shapes.

Next, FIG. 5 is a process diagram showing an ink layer forming method according to a second embodiment of the present invention.

Referring to FIG. 5, a plurality of ink layers 210, 310, and 410 may be formed on top of the illustrated release film 100.

For example, the plurality of ink layers may be referred to as a first ink layer 210, a second ink layer 310, and a third ink layer 410 in the order in which they are formed in close proximity to the release film 100.

According to the second embodiment of the present invention, when the first, second, and third ink layers are formed on one side of the release film 100, an upper portion of the first ink layer 210 formed near the release film The second ink layer 310 formed to be smaller than the first ink layer 210 may be formed.

The third ink layer 410 may be formed on the second ink layer 310 to be larger than the first ink layer 210. The third ink layer 410 may be formed to surround the inner end of the first ink layer 210.

Also in this case, it is preferable that the inner end of the third ink layer 410 is formed in conformity with the predetermined number of the standard with reference to the view area region of the glass.

The inner end portions of the first ink layer 210, the second ink layer 310, and the third ink layer 410 may be rounded. However, the shape is not necessarily limited to the round shape shown in Fig. 5, but may be formed in a different shape.

Next, FIG. 6 is a process diagram showing an ink layer forming method according to a third embodiment of the present invention.

Referring to FIG. 6, a plurality of ink layers 220, 320, 420, and 430 may be formed on the release film 100 shown in FIG.

For example, the plurality of ink layers may include a first ink layer 220, a second ink layer 320, a third ink layer 420, and a fourth ink layer 430).

According to a third embodiment of the present invention, when the first, second, third, and fourth ink layers are formed on one side of the release film 100, the first ink layer The second ink layer 320 may be formed on the first ink layer 220 to be smaller than the first ink layer 220. The third ink layer 420 may be formed on the second ink layer 320 to be smaller than the second ink layer 320.

The fourth ink layer 430, which is formed to be larger than the first ink layer 220, may be formed on the third ink layer 430. The third ink layer 410 may be formed to surround the inner end of the first ink layer 220.

Also in this case, it is preferable that the inner end of the fourth ink layer 430 is formed in conformity with the predetermined number of the standard with reference to the view area region of the glass.

The inner end portions of the first ink layer 220, the second ink layer 320, the third ink layer 420, and the fourth ink layer 430 may be rounded. However, the shape is not necessarily limited to the round shape shown in Fig. 6, but may be formed in a different shape.

In the glass thermal transfer step S200,

This step is a glass thermal transfer step, in which a plurality of ink layers formed on one side of the release film are brought into contact with the glass in a previous step to perform thermal transfer.

FIG. 7 is a process diagram of a glass thermal transfer step, which illustrates an ink layer forming method according to the first embodiment described above as an example.

Referring to FIG. 7, a first ink layer 200, a second ink layer 300, and a third ink layer 400 are sequentially formed on the release film 100 from bottom to top. The second ink layer 300 surrounds the inner end of the first ink layer 200 and the third ink layer 400 surrounds the inner end of the second ink layer 300.

A prepared glass 500 (for example, tempered glass or the like) is placed on a plurality of ink layers formed as described above, and then thermal transfer is performed using a heating roll (R).

Fig. 8 shows the completion of the glass thermal transfer step. Referring to FIG. 8, a plurality of ink layers 200, 300, and 400 formed on the top of the release film 100 (see FIG. 7) as described above with reference to FIG. 7, As shown in FIG. And the release film 100 (see Fig. 7) shows a separated view.

The third ink layer 400, which is formed outermost from the release film among the plurality of ink layers, is transferred close to the glass 500, then the second ink layer 300 is transferred, And the first ink layer 200 is transferred. The inner ends of the first, second, and third ink layers 200, 300, and 400 have a rounded shape as a whole, but are inclined gently as a whole unlike the conventional stepped shape shown in FIG.

TSP forming step S300

This step is a step of forming a TSP (Touch Screen Panel), which corresponds to a step of bonding a TSP to a plurality of inks thermally transferred to a glass.

9 and 10 are flow charts of the TSP laminating step. 9, the first, second, and third ink layers 200, 300, and 400 may be transferred through the backside of the glass 500 when the thermal transfer process in the previous step is completed.

The third ink layer 400 formed on the outermost side of the release film in the ink layer forming step S100 is transferred close to the glass 500 and then the third ink layer 400 is formed on the outside of the third ink layer 400 2 ink layer 300 is transferred, and finally, the first ink layer 200 is transferred. The inner ends of the first, second, and third ink layers 200, 300, and 400 have a rounded shape as a whole, but have an inclined shape as a whole unlike the prior art having a stepped shape.

10, the TSP 600 includes the first ink layer 200, the second ink layer 300, and the third ink layer 300, as shown in FIG. 10, even when the TSP (Touch Screen Panel) The layer 400 can be gently wrapped entirely. And reference numeral I, which is not described, denotes ITO (Indium Tin Oxide).

According to the conventional method, when a step is formed on a portion where offset of a plurality of ink layers is given and the TSP is laminated, a gap space Z exists at the stepped portion, bubbles appear or a silver paste There has been a problem that a crack is generated at an edge portion in forming a pattern.

However, according to the embodiment of the present invention, unlike the conventional case, a plurality of ink layers can be formed with a gentle slope so as to round, thereby minimizing the occurrence of a clearance space in the TSP lamination. As a result, defects such as the appearance of bubbles can be prevented in advance.

As described above, according to the structure and the function of the present invention, it is possible to prevent quality defects generated when the TSP is laminated after thermally transferring the ink layer to the glass, thereby improving the appearance of the product and improving the quality reliability.

Particularly, when a plurality of ink layers are formed in a stepwise manner with an offset in the ink layer according to the conventional method, it is possible to prevent defects such as bubbles appearing at the edge of the stairs in the case of TSP lamination or cracks appearing in forming a silver paste pattern .

In addition, according to the embodiment of the present invention, there is an advantage that the thickness of the ink layer can be reduced as compared with the conventional glass direct printing method.

Although the ink layer forming method for preventing defective TSP lamination and the glass thermal transfer method of the display device including the same according to the present invention have been described above, various embodiments are possible without departing from the scope of the present invention. It is self-evident.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention, and are not intended to be exhaustive or to limit the scope of the invention. All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

R: Heating roll
I: Indium Tin Oxide (ITO)
100: release film
200, 210, 220: a first ink layer
300, 310, 320: a second ink layer
400, 410, 420: a third ink layer
430: fourth ink layer
500: glass (or tempered glass)
600: TSP (Touch Screen Panel)
S100: Ink layer formation step
S200: Glass thermal transfer step
S300: TSP formation step

Claims (13)

Wherein when the plurality of ink layers are formed on one surface of the release film, a second ink layer is further formed on the first ink layer formed close to the release film, and the second ink layer is formed on the inner side of the first ink layer Wherein the second ink layer is formed to be larger than the first ink layer so as to surround the end portion of the second ink layer, and a third ink layer is further formed on the second ink layer, The third ink layer is formed to be larger than the second ink layer so as to surround the inner end portion, and the inner end portion of the third ink layer is formed in accordance with the predetermined number of the standard based on the view area region of the glass An ink layer forming step in which inner ends of the first, second and third ink layers are rounded;
The first, second and third ink layers are thermally transferred to the backside of the glass using a heating roll heated to a predetermined temperature by bringing the glass into contact with the first, second and third ink layers formed on one surface of the release film, A glass thermal transfer step of thermally transferring the inner ends of the first, second and third ink layers so as to have a rounded shape; And
A TSP (Touch Screen Panel) is laminated on the first, second, and third ink layers thermally transferred to the glass, and the TSP covers the rounded inner end portions of the first, second, and third ink layers gently And a TSP forming step of preventing a gap from occurring at a portion where the TSP is joined.
delete delete delete delete A plurality of ink layers including first, second, and third ink layers are formed on one surface of the release film, and the first ink layer formed closer to the release film is formed to have a smaller size than the first ink layer, Forming a second ink layer on the second ink layer and forming the third ink layer larger than the first ink layer on the second ink layer, wherein the third ink layer surrounds the inner end of the first ink layer And an inner end of the third ink layer is formed in conformity with a predetermined number of standard with respect to a view area region of the glass, and inner ends of the first, second and third ink layers are formed to be rounded An ink layer forming step;
The first, second and third ink layers are thermally transferred to the backside of the glass using a heating roll heated to a predetermined temperature by bringing the glass into contact with the first, second and third ink layers formed on one surface of the release film, A glass thermal transfer step of thermally transferring the inner ends of the first, second and third ink layers so as to have a rounded shape; And
A TSP (Touch Screen Panel) is laminated on the first, second, and third ink layers thermally transferred to the glass, and the TSP covers the rounded inner end portions of the first, second, and third ink layers gently And a TSP forming step of preventing a gap from occurring at a portion where the TSP is joined.
delete delete When a plurality of ink layers including first, second, third and fourth ink layers are formed on one surface of the release film, the first ink layer formed closer to the release film is formed smaller than the first ink layer Wherein the third ink layer is formed on the second ink layer so as to be smaller than the second ink layer on the second ink layer and the third ink layer is formed on the third ink layer, Wherein the fourth ink layer is formed so as to surround the inner end of the first ink layer, and the inner end of the fourth ink layer is formed in the view area region of the glass Forming an ink layer on the inner side of the first, second, third and fourth ink layers so as to be rounded;
The first, second, third and fourth ink layers formed on one surface of the release film are brought into contact with the glass surface, and the first, second, third and fourth ink layers are formed on the back surface of the glass A glass thermal transfer step of thermally transferring the first, second, third and fourth ink layers so that inner ends of the first, second, third and fourth ink layers have a rounded shape; And
A TSP (Touch Screen Panel) is laminated on the first, second, third, and fourth ink layers thermally transferred to the glass, wherein the TSP forms a rounded inner end of the first, second, And a TSP forming step of gently wrapping the gap between the TSP and the TSP to prevent the gap from occurring at the jointed portion of the TSP. delete delete delete delete
KR20140058879A 2014-05-16 2014-05-16 Display device glass thermal transferring method KR101510226B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101760731B1 (en) 2015-12-22 2017-07-25 주식회사 씨아이씨티 Glass micro pattern forming method and micro pattern structure thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH05138860A (en) * 1991-11-19 1993-06-08 Canon Inc Film printing device
KR20120111985A (en) * 2011-03-29 2012-10-11 알프스 덴키 가부시키가이샤 Input device and method for manufacturing the same
KR20120139407A (en) * 2011-06-17 2012-12-27 (주)코반케미칼 Manufacturing method of decoration film for touchscreen and the decoration film for touchscreen
KR20130069220A (en) * 2011-12-16 2013-06-26 엘지이노텍 주식회사 Touch window

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05138860A (en) * 1991-11-19 1993-06-08 Canon Inc Film printing device
KR20120111985A (en) * 2011-03-29 2012-10-11 알프스 덴키 가부시키가이샤 Input device and method for manufacturing the same
KR20120139407A (en) * 2011-06-17 2012-12-27 (주)코반케미칼 Manufacturing method of decoration film for touchscreen and the decoration film for touchscreen
KR20130069220A (en) * 2011-12-16 2013-06-26 엘지이노텍 주식회사 Touch window

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101760731B1 (en) 2015-12-22 2017-07-25 주식회사 씨아이씨티 Glass micro pattern forming method and micro pattern structure thereof

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