KR20100115529A - Touch window rework and cleansing method - Google Patents
Touch window rework and cleansing method Download PDFInfo
- Publication number
- KR20100115529A KR20100115529A KR1020090034149A KR20090034149A KR20100115529A KR 20100115529 A KR20100115529 A KR 20100115529A KR 1020090034149 A KR1020090034149 A KR 1020090034149A KR 20090034149 A KR20090034149 A KR 20090034149A KR 20100115529 A KR20100115529 A KR 20100115529A
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- South Korea
- Prior art keywords
- touch sensing
- sensing unit
- separation
- inclined surface
- injected
- Prior art date
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In General (AREA)
Abstract
Method for separating and cleaning a touch sensing unit or a touch sensing unit part layer for regeneration of a touch sensing unit or a liquid crystal display unit or a substrate (for example, tempered glass) attached to the unit in a liquid crystal display unit equipped with a touch sensing unit A method comprising: a first step of forming a gap between a separation object and a non- separation object; And a second step of injecting cooling gas into the gap.
Description
The present invention relates to a method for reproducing a touch sensing unit, and more particularly, to at least some layers of the touch sensing unit or the touch sensing unit without possible damage so as to separate and reuse the touch sensing unit mounted on the liquid crystal display unit. A separation and cleaning method for separating and cleaning the same.
In general, the touch sensing unit is installed above an image display device such as a liquid crystal display (CRT), a cathode ray tube (CRT), a plasma display panel (PDP), etc., such as an electronic notebook, a cash machine, a mobile communication terminal, and a game machine. Thus, the user presses the Indium Tin Oxide (ITO) film of the touch sensing unit while watching the image display device, thereby providing convenience so that the user can directly input predetermined information while viewing the predetermined information on the computer.
The touch sensing unit is classified into capacitive overlay, infrared beam, and resistive overlay. A transparent conductive thin film is used on the upper and lower surfaces facing each other. When a certain pressure is applied to a certain point or more, a resistive film type of a method in which the upper and lower conductive films contact each other and the controller grasps the contact position thereof and inputs information is most commonly used.
FIG. 1 schematically illustrates a cross section of a liquid
As shown in FIG. 1, the
Since the
By the way, since the
Accordingly, recently, the
In the conventional method of separating the
This method has an advantage that can be easily used because the processing method is very simple, but when the
In addition, this conventional method only physically separates the two units, and does not effectively remove the adhesive that binds the two units, there is a need to perform the cleaning of the separated portion is essential.
The present invention is to solve the above problems, the separation of the touch sensing unit for the reproduction of the touch sensing unit does not significantly damage the quality of the product after the separation operation while performing the separation operation of the touch sensing unit and the liquid crystal display unit smoothly. And a cleaning method.
According to one embodiment of the present invention for achieving the above object, in the liquid crystal display unit equipped with a touch sensing unit, as a method of separating the touch sensing unit or a touch sensing unit or a partial layer of the touch sensing unit for the reproduction of the touch sensing unit or the liquid crystal display unit. A first step of forming a gap between the separation object and the non-separation object; And a touch sensing unit separation and cleaning method for regenerating the touch sensing unit including a second step of spraying cooling gas into the gap.
Preferably, in order to remove adhesive or foreign matter remaining on one surface of the separation object or the non-separation object, it is preferable to further perform a third step of spraying and cleaning the fine powder on the one surface.
More preferably, the fine powder is a CO 2 fillet.
More preferably, the cooling gas is CO 2 snow.
More preferably, the method of spraying the cooling gas is made through an injection nozzle having a first injection hole and a first injection hole through which different heterogeneous fluids can be injected, and CO 2 snow is injected into the first injection hole. It is preferable that relatively high temperature N 2 gas is injected into the second injection hole.
In addition, the injection nozzle may include a first member having a straight first flow path for injecting fluid and a first inclined surface having a truncated cone shape; And a second member coupled to an outer side of the first body and having a second inclined surface in inner surface contact with the first inclined surface, wherein the first inclined surface or the second inclined surface has a spiral or curved second shape; It is preferable that the flow path is formed to join the fluid injected from the flow path to form a flow of the fluid injected in the vortex form.
The present invention can quickly and accurately separate the touch sensing unit or some layers of the touch sensing unit from the liquid crystal display unit equipped with the touch sensing unit, thereby improving the regeneration efficiency of the touch sensing unit.
In addition, the present invention by performing the separation operation by spraying the gas powder (specifically CO 2 snow) of the fine powder form to the separation target and the non-separation target, foreign matter such as adhesive on the adhesive surface of the separation target and the non-separation target Since this is generally removed cleanly, it is possible to improve the regeneration quality of the separation object and non-separation object.
In addition, the present invention can simplify the separation operation between the separation object and the non-separation object, it is possible to shorten the working time (or regeneration time), and unlike the prior art, it is possible to significantly lower the defective rate of the separated remanufactured product.
In addition, the present invention does not use a separate cleaning agent (for example, solvent), unlike the prior art by using a gas that can be easily obtained in the air to perform the separation and cleaning (that is, removing contaminants), it is required for the production of remanufactured Costs and emissions of pollutants can be lowered.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the following description of the present invention, terms that refer to the components of the present invention are named in consideration of the function of each component, it should not be understood as a meaning limiting the technical components of the present invention.
4 is a flowchart illustrating a method of detaching a touch sensing unit for reproducing the touch sensing unit according to an embodiment of the present invention, and FIG. 5 is a touch sensing unit for reproducing the touch sensing unit according to another embodiment of the present invention. Is a flowchart showing the separation method of. For reference, reference numerals of the
(Embodiment 1)
The method of detaching the touch sensing unit according to the exemplary embodiment of the present invention includes two steps, as shown in FIGS. 4A to 4C.
The first step is to fix the device in which the
In the second step, a cooling gas (preferably CO 2 snow) is sprayed through the
Here, since the cooling gas freezes and destroys the adhesive existing between the
Therefore, when the cooling gas is sprayed at high speed and high pressure through the
In addition, the present invention, unlike the conventional method of using a precision wire having a higher physical strength than the separation object, because the use of a cooling gas having a very low physical strength than the separation object, does not damage the surface of the separation object, the separation operation is a physical strength And there is no fear of diffusion and expansion of properties to other units or layers.
On the other hand, the cooling gas may be a CO 2 snow or a CO 2 fillet having crystal grains of sub-micron units, the CO 2 snow is a pressure of about 80 PSI CO 2 gas under the pressure conditions (800 PSI) of the gas phase and liquid phase It can be obtained by lowering, and the CO 2 fillet can be obtained by compressing the CO 2 snow obtained in advance and collecting them in the form of a certain shape.
When using such a CO 2 snow and CO 2 fillet, the crystal particles contained in the gas does not damage the surface of the separation unit (120, 130), but adheres to the surface of the separation unit (120, 130) Since the adhesive is also removed, a better separation object can be obtained.
(Second Embodiment)
The second embodiment according to the present invention has a difference in that in the method according to the first embodiment, the third step is further performed to obtain a better quality separation object (for reference, FIGS. 5 to 5 ( Steps a) to (c) are the same as in the first embodiment, and detailed description thereof will be omitted).
That is, in the separation method according to the second exemplary embodiment, after the
Since the present embodiment is further performed to clean the surface of the separation object, the
However, according to the present invention, since the
(Nozzle Structure of Cooling Gas)
FIG. 6 illustrates one form of the nozzle used in the cooling gas spraying process of FIGS. 4 and 5, and FIG. 7 illustrates another form of the nozzle used in the cooling gas spraying process of FIGS. 4 and 5.
On the other hand, while the
The
That is, the
The
The
On the other hand, the
Next, the spraying effect of the cooling gas by the
As shown in FIG. 4B, when heterogeneous gas (preferably, CO 2 snow and relatively high temperature N 2 ) is supplied to the
The cooling
On the other hand, while the touch sensing unit and the liquid crystal display unit is separated and washed to explain any one of these members to reproduce, but in some cases the present invention to regenerate the tempered glass attached to the touch sensing unit or the liquid crystal display unit It is apparent to those skilled in the art that the method may be used.
The present invention is not limited only to the embodiments described above, and those of ordinary skill in the art to which the present invention pertains can be made without departing from the spirit of the technical idea of the present invention described in the claims below. Various changes can be made.
1 is a cross-sectional view showing a cross section of a general liquid crystal display unit equipped with a touch sensing unit,
Figure 2 is a schematic diagram showing a conventional touch sensing unit separation method,
3 is a diagram illustrating a problem according to the conventional separation method shown in FIG.
4 is a flowchart illustrating a method of detaching a touch sensing unit for reproducing the touch sensing unit according to an embodiment of the present invention.
5 is a flowchart illustrating a method of separating and cleaning the touch sensing unit for reproducing the touch sensing unit according to another embodiment of the present invention.
FIG. 6 illustrates one type of nozzle used in the cooling gas injection process of FIGS. 4 and 5.
FIG. 7 illustrates another embodiment of a nozzle used in the cooling gas injection process of FIGS. 4 and 5.
Description of the Related Art
120: liquid crystal display unit 130: touch detection unit
200: wire 40: nozzle
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020090034149A KR20100115529A (en) | 2009-04-20 | 2009-04-20 | Touch window rework and cleansing method |
Applications Claiming Priority (1)
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KR1020090034149A KR20100115529A (en) | 2009-04-20 | 2009-04-20 | Touch window rework and cleansing method |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101459638B1 (en) * | 2013-01-14 | 2014-11-20 | 김선기 | Method for regenerating a panel of touch screen |
CN104299516A (en) * | 2013-07-19 | 2015-01-21 | 三星显示有限公司 | Reworking apparatus for display module and reworking method for display module using the same |
KR20190084190A (en) * | 2018-01-05 | 2019-07-16 | 삼성디스플레이 주식회사 | Apparatus for separating window and method for separating window using the same |
-
2009
- 2009-04-20 KR KR1020090034149A patent/KR20100115529A/en active IP Right Grant
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101459638B1 (en) * | 2013-01-14 | 2014-11-20 | 김선기 | Method for regenerating a panel of touch screen |
CN104299516A (en) * | 2013-07-19 | 2015-01-21 | 三星显示有限公司 | Reworking apparatus for display module and reworking method for display module using the same |
KR20150010486A (en) * | 2013-07-19 | 2015-01-28 | 삼성디스플레이 주식회사 | Reworking apparatus for display module and the reworking method using the same |
US9316850B2 (en) | 2013-07-19 | 2016-04-19 | Samsung Display Co., Ltd. | Reworking apparatus for display module and reworking method for display module using the same |
KR20190084190A (en) * | 2018-01-05 | 2019-07-16 | 삼성디스플레이 주식회사 | Apparatus for separating window and method for separating window using the same |
US11458721B2 (en) | 2018-01-05 | 2022-10-04 | Samsung Display Co., Ltd. | Apparatus for separating a window and method for separating a window using the same |
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