WO2000042496A1 - Touch panel - Google Patents
Touch panel Download PDFInfo
- Publication number
- WO2000042496A1 WO2000042496A1 PCT/JP2000/000097 JP0000097W WO0042496A1 WO 2000042496 A1 WO2000042496 A1 WO 2000042496A1 JP 0000097 W JP0000097 W JP 0000097W WO 0042496 A1 WO0042496 A1 WO 0042496A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transparent
- electrode sheet
- film
- touch panel
- lower electrode
- Prior art date
Links
Classifications
-
- 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
- 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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Definitions
- the S input is performed by arranging on a screen of a display device such as an LCD (liquid product display) or a CRT (CRT) and pressing the finger from above with a finger or a ben according to an instruction on the see-through screen.
- a display device such as an LCD (liquid product display) or a CRT (CRT)
- a transparent touch panel of the resistive film type As shown in FIG. 4, a pair of an upper electrode sheet 101 and a lower electrode sheet 10 having a transparent electrode made of ITO or the like on a transparent film is used. And a transparent holding plate 105 made of resin is provided on the lower surface of the lower electrode sheet 102 with a transparent adhesive-layer 1 on the lower surface of the lower electrode sheet 102. There is one that is completely adhered through the interface (see Fig. 5).
- the transparent film of the upper electrode sheet 101 and the lower electrode sheet 102 has a thickness of 100 to 200 m, which is flexible for pressing operation during input.
- a polyethylene terephthalate film is used, and is usually used.
- the transparent holding plate 105 a polycarbonate plate having a thickness of 0.5 to 3.0 mm, which is excellent in rigidity to protect a screen of a CD or the like from being pressed by human power, is used. Is Suenobu
- the lower electrode sheet The difference in expansion coefficient between the polyethylene terephthalate film used for the transparent film of 02 and the poly-forced board in the transparent holding plate 105 is further different. Is the difference between Nobunaka and Nonaka. Moreover, the lower electrode sheet 10
- the dimensional change can be made between the F part electrode sheet side of 5 and the opposite side. Warping sometimes occurred such that the central part of the flanks protruded upward (see Fig. 5). This warp forms an air layer between the touch panel and the screen below the touch panel, and causes extra bending of the entire touch panel to reduce the feel of operation during manual operation.
- an object of the present invention is to provide a touch panel having excellent flexibility for a pressing operation at the time of human input and excellent rigidity for protecting a screen of a display device such as an LCD or a CRT from a pressing operation at an input.
- An object of the present invention is to provide a touch panel that hardly warps even when exposed to severe temperature and humidity environments. Disclosure of the invention
- the present invention is configured as follows to achieve the above objective.
- an upper electrode sheet having an upper transparent electrode formed on a transparent film made of polyethylene terephthalate and a lower transparent film formed on a transparent film made of polycarbonate are used.
- a lower electrode sheet having an E-pole and a force; the upper electrode and the lower electrode are opposed to each other via a plurality of sensors made of an insulative material, and are disposed on the lower surface of the lower electrode sheet.
- the touch panel according to the first aspect wherein a poly-carbon film having a thickness of 50 to 300 / m is used as the transparent film of the lower electrode sheet.
- the upper j transparent holding plate is displayed from a pressing operation at the time of human power.
- the touch panel according to the second aspect provides a first panel which is a polycarbonate plate having a roller rigidity for protecting the I surface of the device and having a thickness of (5) to ⁇ . O mm.
- the transparent contact layer Ji is a transparent acryl-based adhesive having a refractive index similar to that of the transparent film and the transparent holding plate of the lower electrode sheet! ⁇ :
- the touch panel according to any one of the above aspects is provided.
- a polycarbonate film having a thickness of 50 to 100 / m is used, and one of the transparent adhesive layers has a positive modulus at room temperature.
- the first to fifth positions which are arranged on the surface of the display device and can be performed manually by pressing from above with a finger or a pen in accordance with instructions on a see-through screen.
- a touch panel according to any of the embodiments is provided.
- FIG. 1 is a partial cross-sectional view showing the basic configuration of the touch panel according to the first embodiment of the present invention.
- FIG. 2 is a partial cross-sectional view of the touch panel of FIG. 1 in which a hard coat layer is provided and arranged on a display device;
- FIG. 3 is a cross-sectional view of a part of the touch panel of FIG.
- FIG. 4 is a diagram showing a basic configuration of a general touch panel.
- Figure 5 is a best mode for and inter - implementing the c invention is a schematic diagram illustrating the warping of Tatsuchipaneru
- FIG. 1 shows a basic configuration of a touch panel according to an embodiment of the present invention.
- a transparent holding plate 5 made of resin is entirely adhered to the F surface of the f-part electrode sheet 2 via a transparent adhesive layer 4 so as to face each other via a plurality of spacers 3 made of an object. .
- the transparent film of the upper electrode sheet 1 a poly (ethylene terephthalate) film having excellent flexibility for pressing operation under human power) is used. Also, as shown in FIG. 2, on the surface of the upper electrode sheet 1 opposite to the surface on which the upper transparent electrode is exposed, an acryl epoxy-based or urethane-based thermosetting resin, an acrylate-based photo-curing resin is used. A hard coat layer 70 made of a resin or the like may be provided.
- the transparent film of the upper electrode sheet 1 is obtained by forming an upper transparent electrode continuously on a roll-shaped film raw material, and then cutting the upper electrode sheet 1 into dimensions.
- the transparent film of the lower electrode sheet 2 a polycarbonate film having a thickness of 50 to 300 ⁇ m is used, and the material R is different from that of the upper electrode sheet 1. Since the transparent film of the lower electrode sheet 2 is made of the same material as the plate material of the transparent holding plate 5, the touch panel is, for example, a high temperature 7 (TC, low temperature—20 ° C., high temperature and high humidity 60 ′ C Even when exposed to severe conditions such as 90% R11, temperature environment and humidity environment, there is almost no difference in dimensional change between the lower electrode sheet 2 side of the transparent holding plate 5 and the opposite side. The warp does not almost occur in the touch panel.
- TC high temperature 7
- TC low temperature—20 ° C.
- high temperature and high humidity 60 ′ C Even when exposed to severe conditions such as 90% R11, temperature environment and humidity environment, there is almost no difference in dimensional change between the lower electrode sheet 2 side of the transparent holding plate 5 and the opposite side. The warp does not almost occur in the touch panel.
- the polycarbonate film has a higher transmittance than the polyethylene terephthalate film of the same thickness
- the polyethylene terephthalate is added to the transparent film of the lower electrode sheet 2.
- the visibility of the touch panel is improved as compared with the case where a single film is used.
- the transparent film of the lower electrode sheet 2 is formed by continuously forming the transparent electrodes on the raw film of the coil shape, and then forming the lower electrode sheet.
- the thickness of the transparent film of the lower electrode sheet one DOO 2 is limited to the range:
- the transparent electrodes provided on the opposing surfaces of the upper electrode sheet 1 and the lower electrode sheet 2 are, for example, a metal film or a metal oxide film having transparency and conductivity, which is vacuum-deposited, shattered, ion-aligned. It is formed by such a method.
- metal oxide films such as tin oxide, indium oxide, antimony oxide, zinc oxide, and oxidized metal, composite films mainly composed of these gold oxides, or gold, silver, copper
- metal films such as tin, nickel, aluminum and palladium.
- the thickness of each transparent electrode is generally 100 to 100 mm.
- the spacer 3 is formed in an arbitrary shape on the transparent electrode surface of either the upper electrode sheet 1 or the lower electrode sheet 2.
- an acrylic resin such as a melamine acrylate resin, a urethane acrylate resin, an epoxy acrylate resin, a methacryl acrylate resin, an acryl acrylate resin, or a polyacrylate resin is used.
- the spacer 3 can also be formed by a printing method using a urethane-based transparent resin or the like.
- the spacer 13 is generally formed in a dot shape having a diameter of 30 to 1001 and a height of 1 to 15 m, and is arranged at a constant interval of 0.1 to 10 mm.
- the transparent holding plate 5 protects the screen of a display device 71 such as an LCD (the display device 71 is indicated by a dashed-dotted line in FIG. 1 and a solid line in FIG. 2) from a pressing operation at the time of manual input.
- a display device 71 such as an LCD
- the display device 71 is indicated by a dashed-dotted line in FIG. 1 and a solid line in FIG. 2
- a low reflection treatment layer 72 may be provided on the lower surface of the transparent holding plate 5 as shown in FIG. 3 to provide a low reflection treatment layer.
- There are treatments such as applying a low-reflection material using a low-refractive index resin such as a fluororesin-silicon resin, and forming a multi-layer metal film. Further, these treatments may be directly applied to the lower surface of the transparent holding plate 5.
- the upper electrode sheet 1 and the lower electrode sheet 2 are adhered by an adhesive 10 or a double-sided tape outside the display surface area, whereas the F-part electrode sheet 2 and the transparent holding plate 5 are entirely transparent adhesive layer 4 through the bonded been to have ⁇
- the upper electrode sheet one Bok 1 since the question of the lower electrode sheet one Bok 2 and the transparent holding plate 5 there is no air layer, the upper electrode sheet one Bok 1 at input
- the transparent adhesive layer 4 a transparent adhesive such as an acryl-based adhesive generally used for overall bonding between the lower electrode sheet 2 and the transparent holding plate 5 can be used.
- a transparent film and a transparent holding plate 5 having an index of refraction close to that of the transparent film 2 and an elastic modulus of 5 ⁇ 10 5 to 5 ⁇ 10 7 dynes / cm 2 at room temperature. It is preferable to use something in between.
- the transparent adhesive layer 4 has an elastic modulus value between 5 ⁇ 10 5 and 5 ⁇ 10 7 dynes cm 2 at room temperature, the touch panel is almost warped. Instead, the sliding durability of the upper transparent electrode of the touch panel can be improved. This sliding durability is very high for touch panels.
- the transparent adhesive layer 4 may be formed by applying an adhesive directly to the lower electrode sheet 2 or the transparent holding plate 5, or by applying an adhesive beforehand on both sides of the transparent support film.
- the transparent adhesive layer 4 has no adhesive agent and no base material (support film).
- the transparent adhesive layer 4 has a problem with the polycarbonate sheet of the lower electrode sheet 2 and the polycarbonate sheet of the transparent holding plate 5. The warp prevention function is hardly lost even if the support film exists.
- a 200- ⁇ m-thick rolled polyethylene terephthalate film is provided on one side with a transparent electrode made of ITO or the like with a thickness of 200 A by sputtering, and then 89 mm long and 68 mm wide.
- the upper electrode sheet was cut out into a rectangle of mm.
- a transparent electrode made of ITO etc. with a thickness of 20 ⁇ was provided on one side of a 1 ⁇ ⁇ 0 m thick poly-carbon film with a thickness of 89 mm by 68 mm by a sputtering method.
- the lower electrode sheet was cut out into a rectangle of mm.
- urethane-based transparent resin was printed on the transparent electrode of the lower electrode sheet in a dot shape, and spacers with a diameter of 50 m and a height of 10 m were arranged at 1 mm intervals. .
- the upper electrode sheet and the lower electrode sheet are placed with the electrode surfaces facing each other, and an acrylic adhesive with a thickness of 20 ⁇ m and a width of 5 mm outside the display surface area (Positive modulus 8 X 10 5 dynescm 2 ) Bonded.
- a low-reflection treatment is applied by applying a low-reflection material using silicone resin to one side of a transparent holding plate consisting of a polycarbonate plate of 89 mm in length, 68 mm in width and 1 mm in thickness.
- a transparent adhesive layer made of an acryl-based adhesive is applied and formed on the surface of the transparent holding plate opposite to the surface on which the low-reflection treatment layer is formed, and is attached to the entire lower surface of the lower electrode sheet to obtain a touch panel.
- Such a touch panel is operated in an environment with a temperature of 60 nC and a humidity of 90% RH.
- a character sliding test for inputting katakana syllabary characters with a load of 250 gm using a 0.8 R volumetric pen with the tip was performed.
- the contact layer (ON resistance) is measured after sliding 200,000 characters because of the buffer layer and the structure of the upper transparent holding plate. After sliding, there was no increase to 0.5 k ⁇ , and the sliding durability of the upper transparent electrode was improved.
- the touch panel according to the present invention is configured by the above configuration and operation, and has the following effects.
- a poly-carbonate film which is the same material as the plate material of the transparent holding plate, is used. Therefore, even when the touch panel is exposed to severe temperature and humidity environments, there is almost no difference in dimensional change between the lower electrode sheet side of the transparent holding plate and the opposite side, and the touch panel hardly warps.
- the transparent film of the lower electrode sheet becomes transparent to the rolled film. After the electrodes are formed continuously, they can be obtained by cutting to the dimensions of the lower electrode sheet.
- the transparent holding plate has high rigidity to protect the screen of the display device from a pressing operation at the time of human input, and if it is a polycarbonate plate having a thickness of 0.5 to 3.0 mm, the transparent holding plate at the time of human input
- the touch panel flexes and hardly touches the display screen. If erroneous contact with the display screen causes bleeding when the display device is an LCD, such bleeding can be prevented in the present invention.
- the transparent adhesive layer is made of a transparent acryl-based adhesive having a refractive index similar to that of the transparent film and the transparent holding plate of the lower electrode sheet, there is no problem between mounting dust and the holding plate, and However, there is almost no light reflection between the lower electrode sheet and the adhesive debris, and the recognition is improved.
- the film of the lower electrode sheet one Bok, using a soft polycarbonate one Bok film thicknesses 5 0 ⁇ 3 0 0 m, £ one, the transparent adhesive layer, ⁇ modulus value at normal temperature 5 X 1 0 5 From 5 X] 0 7 dynes / cm 2 , so that the warp does not almost occur on the touch panel,
- the sliding durability of the side transparent electrode can be improved. This sliding durability is very important for touch panels.
- the above touch panel is placed on the screen of the display device and the finger is pressed from above with a finger or a vane in accordance with the instruction of the see-through screen, human pressure can be applied, so that the pressing at the time of human power can be performed.
- Flexibility for operation and rigidity to protect the screen of display devices such as LCDs and CRTs from pressing operations during input can be achieved, and the device can be exposed to severe temperature and humidity environments. Even though the warp hardly occurs, the appearance of the touch panel and the visibility of the screen can be prevented from deteriorating, and the warp can prevent the input feeling of the touch panel from being different.
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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)
- Laminated Bodies (AREA)
- Push-Button Switches (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00900338A EP1067454A4 (en) | 1999-01-12 | 2000-01-12 | TOUCHSCREEN |
US09/623,981 US6559902B1 (en) | 1999-01-12 | 2000-01-12 | Touch panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/5142 | 1999-01-12 | ||
JP514299A JP3946371B2 (ja) | 1999-01-12 | 1999-01-12 | タッチパネル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000042496A1 true WO2000042496A1 (en) | 2000-07-20 |
Family
ID=11603065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/000097 WO2000042496A1 (en) | 1999-01-12 | 2000-01-12 | Touch panel |
Country Status (6)
Country | Link |
---|---|
US (1) | US6559902B1 (ja) |
EP (1) | EP1067454A4 (ja) |
JP (1) | JP3946371B2 (ja) |
KR (1) | KR100716738B1 (ja) |
TW (1) | TW446976B (ja) |
WO (1) | WO2000042496A1 (ja) |
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- 2000-01-12 US US09/623,981 patent/US6559902B1/en not_active Expired - Lifetime
- 2000-01-12 EP EP00900338A patent/EP1067454A4/en not_active Withdrawn
- 2000-01-12 WO PCT/JP2000/000097 patent/WO2000042496A1/ja active IP Right Grant
- 2000-01-12 KR KR1020007009877A patent/KR100716738B1/ko active IP Right Grant
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JPH06309101A (ja) * | 1991-03-06 | 1994-11-04 | Nissha Printing Co Ltd | 透明タッチパネル |
JPH05338086A (ja) * | 1992-06-11 | 1993-12-21 | Toyobo Co Ltd | タッチパネル用積層フィルム及び透明タッチパネル |
JPH06275132A (ja) * | 1993-03-19 | 1994-09-30 | Tonen Chem Corp | タッチパネル電極膜 |
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JPH11297160A (ja) * | 1998-04-07 | 1999-10-29 | Matsushita Electric Ind Co Ltd | 透明タッチパネル及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1067454A1 (en) | 2001-01-10 |
JP3946371B2 (ja) | 2007-07-18 |
KR100716738B1 (ko) | 2007-05-14 |
US6559902B1 (en) | 2003-05-06 |
EP1067454A4 (en) | 2006-08-02 |
JP2000207123A (ja) | 2000-07-28 |
KR20010041669A (ko) | 2001-05-25 |
TW446976B (en) | 2001-07-21 |
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