Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
  • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
  • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06F3/0412—Digitisers structurally integrated in a display
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
  • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Definitions

• the present invention relates to a touch panel and a manufacturing method of the same. More particularly, the present invention relates to a touch panel using an offset printing process and a method for manufacturing the same. (b) Description of the Related Art
• a touch panel enters information corresponding to a screen displayed on the panel by pressing the screen.
• the touch panel has been actively applied to every type of display device.
• the touch panel extracts a coordinate of a pressed portion and enters data using a capacitive method, a resistive method, a surface ultrasonic wave method, or an infrared ray method.
• a capacitive method when used, a current variation amount is recognized using capacitance of a human body to detect a location in the screen that is touched by a person.
• the present invention has been made in an effort to provide a touch panel manufactured using an offset method. Further, the present invention provides a manufacturing method of the touch panel.
• a touch panel includes i) a panel, ii) a plurality of electrostatic electrodes disposed in a display region for touch and respectively spaced apart from each other on the panel, and iii) bridge electrodes connecting the plurality of electrostatic electrodes to each other.
• One of the plurality of electrostatic electrodes includes i) one of the plurality of electrostatic electrodes and ii) a plurality of second linear electrodes crossing the plurality of first linear electrode portions.
• At least one of the first linear electrode portions may be extended to the bridge electrode.
• the first linear electrode portion and an edge of the electrostatic electrode may neighbor in parallel with each other.
• At least one of the of second linear electrode portions may be extended to the bridge electrode, and the second linear electrode portion and the first linear electrode portion may cross each other in the bridge electrode.
• the second linear electrode portion and an edge of the electrostatic electrode may neighbor in parallel with each other.
• the at least one of the first linear electrode portions may include a plurality of first linear electrode portions and the at least one of the second linear electrode portions may include a plurality of second linear electrode portions.
• An average width of the first linear electrode portions and the second linear electrode portions may be 5 ⁇ to 30 ⁇ .
• an average width of the first linear electrode portions and the second linear electrode portions may be 10 ⁇ to 30 ⁇ .
• the plurality of first linear electrode portions and the plurality of second linear electrode portions may cross each other forming an angle of a range from 15° to 90°. The angle may be in a range from 15° to 45°.
• the touch panel according to the exemplary embodiment of the present invention further includes a draw-out electrode disposed on the panel, disposed in a non-display region surrounding the display region, and drawn out from an electrostatic electrode neighboring the non-display region among the plurality of electrostatic electrodes, and the plurality of electrostatic electrodes and the draw-out electrode may be offset-printed and thus integrally formed.
• the plurality of electrostatic electrodes include i) first electrostatic electrodes extending in a first direction and ii) second electrostatic electrodes extending in a second direction that crosses the first direction, and the bridge electrode includes i) first bridge electrodes connecting the first electrostatic electrodes to each other and ii) second bridge electrodes connecting the second electrostatic electrodes to each other.
• One of the first bridge electrodes and one of the second bridge electrodes may cross each other in an insulated manner.
• a transparent insulating layer may be formed between the first bridge electrode and the second bridge electrode. The transparent insulating layer may be formed by screen-printing.
• the second bridge electrode may be formed as a transparent conductive layer.
• the touch panel according to the exemplary embodiment of the present invention further includes another panel including another surface contacting the plurality of electrostatic electrodes, and the first electrostatic electrodes may contact a surface of the panel and the second electrostatic electrodes may contact the other surface of the other panel.
• An adhesive film may be disposed between the first electrostatic electrodes and the second electrostatic electrodes.
• the plurality of electrostatic electrodes may include at least one material selected from a group consisting of copper (Cu), nickel (Ni), aluminum (Al), chrome (Cr), molybdenum (Mo), silver (Ag), silver (Au), carbon black, graphite, tin oxide, and indium oxide.
• An average grain size of the material may be in a range from 30nm to 3000nm. Preferably, an average grain size of the material may be in a range from 50nm to 100nm.
• silver may be formed in the shape of a wire or a sphere.
• the panel may include a material selected from a group of glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), and acryl.
• a pitch of first linear electrode portions that neighbor each other among the plurality of linear electrode portions may be in a range from 250 ⁇ to 750 ⁇ .
• a touch panel according to another exemplary embodiment of the present invention includes i) a panel, ii) a plurality of first electrostatic electrodes disposed in a display region for touch and respectively spaced apart from each other on a first surface of the panel, and iii) a plurality of second electrostatic electrodes disposed in the display region and respectively spaced apart from each other on a second surface facing a direction away from a direction that the first surface faces.
• the plurality of first electrostatic electrodes and the plurality of second electrostatic electrodes may be formed in the shape of a mesh and may be offset-printed.
• a manufacturing method of a touch panel includes i) providing a panel, ii) providing electrodes on the panel, and iii) sintering the electrodes at a low temperature.
• the providing of the electrodes offset-prints a plurality of first electrostatic electrode spaced apart from each other on the panel, a plurality of first electrostatic electrodes spaced apart from each other on the panel, a bridge electrode connecting the plurality of first electrostatic electrodes to each other, and draw-out electrodes respectively connected to a first electrostatic electrode disposed at one end of the a plurality of first electrostatic electrodes and a second electrostatic electrode disposed at the other end of the plurality of second electrostatic electrodes.
• the plurality of first electrostatic electrodes, the plurality of second electrostatic electrodes, the bridge electrodes, and the draw-out electrode may be simultaneously offset-printed.
• the manufacturing method according to the exemplary embodiment of the present invention may further include i) providing a transparent insulating layer on the bridge electrodes and ii) providing other bridge electrodes connecting the plurality of second electrostatic electrodes on the transparent insulating layer to each other.
• the transparent insulating layer may be provided by being screen-printed.
• the other bridge electrodes may be screen- printed or offset-printed.
• An inexpensive touch panel may be manufactured using a simple offset process.
• the draw out electrode and the electrostatic electrode do not have a height difference, a moire phenomenon can be prevented by eliminating an air gap, thereby improving display quality.
• FIG. 1 is an exploded perspective view of a touch panel according to a first exemplary embodiment of the present invention.
• FIG. 2 is an enlarged top plan view of a portion II in FIG. 1.
• FIG. 3 is a schematic flowchart of a manufacturing method of the touch panel of FIG. 1.
• FIG. 4 is an exploded perspective view of a touch panel according to a second exemplary embodiment of the present invention.
• FIG. 5 is an exploded perspective view of a touch panel according to a third exemplary embodiment of the present invention.
• spatially relative terms such as “below”, “above”, and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the figures is turned over, elements described as “below” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary term “below” can encompass both an orientation of above and below. Apparatuses may be otherwise rotated 90 degrees or at other angles and the spatially relative descriptors used herein interpreted accordingly.
• FIG. 1 schematically shows a touch panel 100 according to a first exemplary embodiment of the present invention.
• FIG. 1 exemplarily shows a structure of the touch panel 100, and the present invention is not limited thereto.
• the structure of the touch panel 100 can be variously modified.
• the touch panel 100 includes a panel 10, electrostatic electrodes 20, and bridge electrodes 30.
• the touch panel 100 may further include other elements as necessary.
• the touch panel 100 may further include a draw-out electrode 40 (shown in FIG. 2), and a connector (not shown).
• the draw-out electrode 40 is formed at edges of the electrostatic electrodes 20, and the connector may be connected with the draw- out electrode 40 to transmit an electric signal to a driving circuit such as a display through a flexible printed circuit board (FPC) (not shown).
• FPC flexible printed circuit board
• the draw-out electrode 40 is not shown for convenience of description.
• the electrostatic electrodes 20 are disposed on the panel 10.
• the electrostatic electrodes 20 may be offset-printed onto the panel 10.
• the electrostatic electrodes 20 include first electrostatic electrodes 201 and second electrostatic electrodes 203.
• the bridge electrodes 30 include first bridge electrodes 301 and second bridge electrodes 303.
• the first electrostatic electrodes 201 are extended in the x-axis direction and connected with each other by the first bridge electrodes 301 (located in a lower portion of the second bridge electrodes 303).
• the second electrostatic electrodes 203 are extended in the y-axis direction and connected with each other by the second bridge electrodes 303.
• the first bridge electrodes 301 and the second bridge electrodes 303 connecting the first electrostatic electrodes 201 and the second electrostatic electrodes 203 with each other respectively are overlapped with each other.
• the first bridge electrodes 301 and the second bridge electrodes 303 cross each other in an insulated manner such that a short circuit due to electrical connection therebetween can be prevented.
• a transparent insulating layer (not shown) may be formed between the first bridge electrodes 301 and the second bridge electrodes 303.
• An organic or inorganic material may be used as a material of the transparent insulating layer (not shown). While effectively transmitting light through a transparent insulating layer (not shown), the first bridge electrodes 301 and the second bridge electrodes 303 can be electrically insulated.
• the transparent insulating layer may be formed through screen printing.
• FIG. 1 shows an enlarged view of the first electrostatic electrodes 201 and the first bridge electrode 301 connecting the first electrostatic electrodes 201 with each other.
• the second electrostatic electrodes 203 disposed neighboring the first electrostatic electrodes 201 and the second bridge electrode 303 disposed above the first bridge electrode 301 are omitted in the drawing.
• the structure of the electrode exemplarily shown in FIG. 1 and the present invention is not limited thereto. Thus, the structure of the electrode of FIG. 1 can be variously modified.
• the first electrostatic electrodes 201 include first linear electrode portions 201 1 and second linear electrode portions 2013 shown in the lower portion in the enlarged view of FIG. 1.
• the first linear electrode portions 201 1 and the second linear electrode portions 2013 cross each other. That is, the first electrostatic electrodes 201 are formed in a mesh structure.
• the first electrostatic electrodes 201 may be manufactured using copper (Cu), nickel (Ni), aluminum (Al), chrome (Cr), molybdenum (Mo), silver (Ag), gold (Au), carbon black, graphite, tin oxide, indium oxide and so on. Such materials have excellent conductivity and high electrical reliability, but they are opaque so that light cannot be fully transmitted.
• the first linear electrode portions 2011 and the second linear electrode portions 2013 may have an average width of a range from 5 ⁇ to 30 ⁇ .
• the average width of the first linear electrode portions and the second linear electrode portions may be in a range from 10 ⁇ to 30 ⁇ .
• the first linear electrode portions 201 1 and the second linear electrode portions 2013 may not be substantially formed through the offset process, and they may be short circuited.
• the average width is too large, the first linear electrode portions 2011 and the second linear electrode portions 2013 can be observed by the naked eye so that the image quality is deteriorated.
• the average width thereof is sufficiently small so that the first linear electrode portions -2011 and the second linear electrode portions 2013 can be barely viewed by the naked eye. Therefore, a sufficient aperture can be assured by the first linear electrode portions 2011 and the second linear electrode portions 2013.
• the first linear electrode portion As shown in the enlarged view of FIG. 1 , the first linear electrode portion
• the first bridge electrode 301 is extended to the first bridge electrode 301. That is, a part of the first linear electrode portion 2011 and the second linear electrode portion 2013 are included in the first bridge electrode 301 , and they cross each other.
• an edge 2015 of the first electrostatic electrode 201 neighbors in parallel with the first linear electrode portion 2011.
• the edge 2015 of the first electrostatic electrode 201 neighbors in parallel with the second linear electrode portion 2013. That is, the bridge electrode 301 is formed by a part of the first linear electrode portion 2011 and a part of the second linear electrode portion 2013.
• the bridge electrode 301 may be formed in multiple by a plurality of first linear electrode portions 2011 and a plurality of second linear electrode portions 2013.
• the second static electrode 203 and the second bridge electrode 303 can be formed through the above-stated method.
• FIG. 2 is a top plan view showing an enlarged view of the portion II of FIG. 1.
• the first linear electrode portion 2011 and the second linear electrode portion 2013 are enlarged.
• the touch panel is divided into a display region that can be touched for displaying an image and a non-display region ND where no image is displayed.
• the electrostatic electrodes 20 are disposed in the display region D and the draw-out electrode 40 is disposed in the non-display region ND. Electrostatic electrodes 205 neighbor the non-display region ND.
• the draw-out electrode 40 is drawn out from the electrostatic electrode 205 and transmits an electrostatic capacity variation of the electrostatic electrode 205 caused by touch to the draw out terminal 42.
• the draw-out terminal 42 is connected with a connector (not shown) to transmit an electric signal to the outside. For good electrical contact with the connector, the width of the draw out terminal 42 is formed to be larger than that of the draw-out electrode 40.
• the electrostatic electrode 20 and the draw-out electrode 40 are simultaneously formed on the panel 10 using the offset method.
• the electrostatic electrode 20 and the draw-out electrode 40 are simultaneously formed and therefore the process can be simplified and the electrostatic electrode 20 and the draw-out electrode 40 do not have a height difference. Therefore, an air gap formed when the touch panel is combined with another element can be minimized so that display quality deterioration due to the touch panel can be prevented.
• a transparent conductive layer is formed in the display region D using a laser annealing method, the above- stated problem may occur.
• the first linear electrode portion 2011 and the second linear electrode portion 2013 forming the electrostatic electrode 20 may cross each other with an angle ( ⁇ ) of a range from 15° to 90°. Further preferably, the angle ( ⁇ ) may be in a range from 15° to 45°. When the angle ( ⁇ ) is not included in the range, a sufficient aperture ratio cannot be assured in the electrostatic electrode 20. Accordingly, the angle ( ⁇ ) is controlled to be included in the above-stated range.
• a pitch P of the first linear electrode portions 2011 may be 250 ⁇ to 750pm.
• the pitch P is too large, the sensitivity of touch in the display region may be deteriorated.
• the pitch P is too small, the first linear electrode portions 2011 are densely formed such that they can be viewed by the naked eye, and light cannot be easily transmitted.
• the pitch P of the first linear electrode portions 2011 is controlled to be included in the above-stated range, the first linear electrode portions 2011 are barely viewed by the naked eye. Accordingly, light can be effectively transmitted.
• the second linear electrode portions 2013 are likewise.
• FIG. 3 is a schematic flowchart of a manufacturing method of the touch panel 100 of FIG. 1.
• the manufacturing method of the touch panel 100 of FIG. 3 is an exemplarily shown, and the present invention is not limited thereto.
• the manufacturing method of the touch panel 100 includes i) providing a panel (S10), ii) providing first electrostatic electrodes, second electrostatic electrodes, bridge electrodes, and draw-out electrodes (S20), iii) sintering the electrodes at a low temperature (S30), and iv) providing a transparent insulating layer and other bridge electrodes (S40).
• the manufacturing method of the touch panel 100 may further include other processes as necessary.
• a panel is provided in the step of S10.
• the panel may be formed using glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), acryl and so on. Since the panel 100 is manufactured through the low temperature sintering in the step of S40, the panel may be formed using a resin material.
• the first electrostatic electrodes, the second electrostatic electrodes, first bridge electrodes, and draw-out electrodes are offset-printed on the panel.
• the draw out electrodes are connected with a first electrostatic electrode disposed at an end of the first electrostatic electrodes and a second electrostatic electrode disposed at an end of the second electrostatic electrodes.
• the electrodes can be simultaneously offset-printed.
• the manufacturing process can be simplified and the manufacturing cost can be reduced. Further, the draw out electrodes and other electrodes do not have a height difference.
• the first bridge electrodes are connected with the first electrostatic electrodes, and the second electrostatic electrodes spaced apart from each other are formed to be spaced apart from the first electrostatic electrodes.
• an average grain size of materials of the electrodes is preferably in a range from 30nm to 3000nm.
• the average grin size of the materials may be in a range from 50nm to 100nm.
• the sintering temperature in the step of S40 is increased so that the low temperature sintering cannot be performed.
• the materials In order to sinter the electrodes at a low temperature, the materials should absorb an insignificant amount of heat, and therefore the average grain size of the materials of the electrodes is controlled to be included in the above-stated range.
• the material is silver
• silver is preferably formed in a wire shape of a sphere. In this case, heat absorptance can be further increased during a sintering process of the material, and electrical conductivity of the electrodes of the touch panel can be further increased.
• the offset process is well known to a person skilled in the art, and therefore no further description will be provided.
• the electrodes formed on the panel are sintered at a low temperature.
• the sintering temperature may be 100°C to 300°C.
• the sintering temperature is controlled to be included in the above-stated range.
• a transparent insulating layer and other bridge electrodes that is, second bridge electrodes, are provided. That is, the transparent insulating layer is provided on the second bridge electrodes to electrically insulate the second electrostatic electrodes that are spaced apart from each other from the first electrostatic electrodes.
• the transparent insulating layer may be manufactured using a screen printing method, and effectively transmits light because it is transparent.
• the second bridge electrodes connecting the second electrostatic electrodes to each other are formed on the transparent insulating layer.
• the second bridge electrode may be screen-printed or offset-printed.
• the second bridge electrode is formed as a transparent conductive layer, light can be transmitted through the second bridge electrode so that the second bridge electrodes may be formed in the shape of a plane rather than a mesh.
• the transparent insulating layer and the second bridge electrodes may be formed with a photo-curable material, and the material may not be sintered.
• a lamination process or a screen printing process may be used.
• the lamination process accurate tolerance cannot be maintained during interlayer lamination after patterning of the touch screen, and the inferiority rate may be increased due to air bubbles, foreign particles, scratches, and the like. Further, the sheet is too thin so that it cannot be easily treated and may be wrinkled. In addition, signal interference and aperture ratio may be decreased due to shift or overlap.
• the screen printing process alignment tolerance between the electrostatic electrode and the draw- out electrode formed of ITO cannot be accurately maintained. That is, accurate process control cannot be performed, and ITO cannot be observed by the naked eye.
• a silver paste should be sintered at a high temperature so that cracks may be formed in a micro-line width of the electrostatic electrode.
• a panel sintered at a low temperature using the manufacturing method of the touch panel 100 undergoes, a deburring process and a cleaning or grinding process. Through such a process, a single-layered touch panel is manufactured.
• FIG. 4 is an exploded view of a touch panel 200 according to a second exemplary embodiment of the present invention.
• a touch panel 200 of FIG. 4 is the same as the touch panel 100 of FIG. 1 , excluding that two panels are respectively provided to individually form electrostatic electrodes, and therefore like reference numerals designate like elements and no further description will be provided.
• the touch panel 200 includes a first panel 12, a second panel 14, first electrostatic electrodes 201 , second electrostatic electrodes 203, and an adhesive film 50.
• the touch panel 200 may further include other elements as necessary.
• the second electrostatic electrodes 203 are formed under the first panel 12, and the first electrostatic electrodes 201 are formed on the second panel 14. That is, the first electrostatic electrodes 201 contact a surface 141 of the second panel 14, and the second electrostatic electrodes 203 contact a surface 121 of the first panel 12. Since the electrically insulative adhesive film 50 is disposed between the first electrostatic electrodes 201 and the second electrostatic electrodes 203, the first electrostatic electrodes 201 and the second electrostatic electrodes 203 are electrically insulated from each other. The adhesive film 50 is disposed between the first and second panels 12 and 14 to eliminate a gap formed therebetween so that deterioration of light transmittance due to air in the gap can be prevented. An optical clear adhesive (OCA) film may be used as the adhesive film 50.
• OCA optical clear adhesive
• FIG. 5 is a schematic exploded view of a touch panel 300 according to a third exemplary embodiment of the present invention.
• the enlarged portion of FIG. 5 schematically shows a cross-section structure of the touch panel 300.
• the touch panel 300 of FIG. 5 is the same as the touch panel 100 of FIG. 1 , excluding that electrostatic electrodes 201 and 203 are individually formed on upper and lower portions of a panel 16 using one sheet of panel 16, respectively, and therefore like reference numerals designate like elements and no further description will be provided.
• first electrostatic electrodes 201 are formed on a first surface 161 of the panel 16 and second electrostatic electrodes 203 are formed on second surface 163 of the panel 16.
• the first surface 161 faces the +z axis direction and the second surface 163 faces the -z axis direction, and therefore the first surface 161 and the second surface 163 face away from each other.
• the first electrostatic electrodes 201 and the second electrostatic electrodes 203 are insulated from each other by the panel 16.
• the first electrostatic electrodes 201 and the second electrostatic electrodes 203 are formed in the shape of a mesh, and are offset-printed. Therefore, the touch panel 300 can be manufactured with a simple process and low cost.
• electrostatic electrode 40 draw-out electrode

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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)
• Position Input By Displaying (AREA)
• User Interface Of Digital Computer (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (5)

Cited By (10)

Families Citing this family (16)

Family Cites Families (11)

• 2010
  • 2010-04-28 KR KR1020100039705A patent/KR101663210B1/ko not_active Expired - Fee Related
• 2011
  • 2011-04-26 CN CN201180021476.8A patent/CN102870073B/zh not_active Expired - Fee Related
  • 2011-04-26 WO PCT/KR2011/003033 patent/WO2011136542A2/en not_active Ceased
  • 2011-04-26 JP JP2013507882A patent/JP5868954B2/ja not_active Expired - Fee Related
  • 2011-04-27 TW TW100114722A patent/TWI528234B/zh not_active IP Right Cessation

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