WO2009110423A1 - タッチパネル - Google Patents
タッチパネル Download PDFInfo
- Publication number
- WO2009110423A1 WO2009110423A1 PCT/JP2009/053847 JP2009053847W WO2009110423A1 WO 2009110423 A1 WO2009110423 A1 WO 2009110423A1 JP 2009053847 W JP2009053847 W JP 2009053847W WO 2009110423 A1 WO2009110423 A1 WO 2009110423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- touch panel
- lead
- electrode
- transparent conductive
- Prior art date
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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
- 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 present invention relates to a touch panel disposed on the front of a display and used as an input switch integrated with the display, and more particularly to a glass-glass type touch panel.
- FIG. 1 shows the configuration of this type of glass-glass type touch panel of resistive film type divided into an upper glass side and a lower glass side.
- the thickness of the upper glass substrate 11 is smaller than the thickness of the lower glass substrate 12.
- Transparent conductive films 13 and 14 are respectively formed on opposing surfaces of the upper glass substrate 11 and the lower glass substrate 12.
- the transparent conductive films 13 and 14 form a resistance film, and are formed of an ITO film or the like. Electrodes 15 and 16 and electrodes 17 and 18 are provided by printing on both ends of the transparent conductive films 13 and 14, respectively.
- the electrodes 17 and 18 provided on the transparent conductive film 14 are disposed at both ends of the transparent conductive film 14 in the X direction in this example.
- the electrodes 15 and 16 provided on the transparent conductive film 13 are disposed at both ends of the transparent conductive film 13 in the Y direction.
- the electrodes 15 and 16 are extended in the X direction as shown in the drawing and provided with connection portions 15a and 16a.
- the connection portions 15a and 16a are narrowed relative to the electrodes 15 and 16 to form a protrusion.
- Lead-out patterns 21-24 for voltage application / detection are formed by printing on the surface of the lower glass substrate 12 on which the transparent conductive film 14 is formed, and the lead-out patterns 21 and 22 are drawn from the electrodes 17 and 18, respectively.
- connection portions 23a and 24a are formed at inner ends of the lead patterns 23 and 24, respectively.
- the connection portions 23a and 24a have a U-shaped notch at the tip.
- the lead-out patterns 21-24 are drawn as shown in the figure, and one end of the lower glass substrate 12 is aligned with the other end (outer end). An FPC cable or the like (not shown) for circuit connection is connected to the other end portion. A large number of dot spacers 25 are formed in an array on the transparent conductive film 14 of the lower glass substrate 12.
- the upper glass substrate 11 and the lower glass substrate 12 configured as described above are joined together at their peripheries by a seal 26 including a spacer. Thereby, the transparent conductive films 13 and 14 face each other.
- the seal 26 is formed by mixing a spacer with a thermosetting resin such as epoxy resin, and is applied and disposed on the lower glass substrate 12 as shown in the figure.
- the upper glass substrate 11 and the lower glass substrate 12 are stacked, pressurized, and fired to bond the upper glass substrate 11 and the lower glass substrate 12 while maintaining a required gap.
- the notch part 26a provided in a part of frame shape seal 26 swells the center part of the upper glass substrate 11 after bonding the upper glass substrate 11 and the lower glass substrate 12 (a gap is made large. ) Used as an inlet to inject air.
- the cutout portion 26 is sealed with resin after the air injection.
- connection portions 23a and 24a In the configuration as described above, in a state where the upper glass substrate 11 and the lower glass substrate 12 are joined, as described later, the U-shaped notch portion of the connection portions 23a and 24a has a narrowed width 15a and 16a enter. That is, the connection portions 23a and 24a and the connection portions 15a and 16a are formed in a shape in which they are interdigitated with a minute gap therebetween.
- FIG. 2 shows this state with respect to the connection portion between the connection portions 23a and 15a.
- the connection portions 23 a and 15 a having flat shapes to be engaged with each other with a minute gap therebetween are connected to each other through the conductive paste 31.
- the conductive paste 31 is applied by printing on a portion of the connection portion 23a excluding the tip and a portion of the connection portion 15a excluding the tip.
- connection portion 23 a and the conductive paste 31, and the connection portion 15 a and the conductive paste 31 are electrically The purpose is to make the connection stable.
- the transparent conductive films 13 and 14 contact with each other at that point.
- the X coordinate of the point can be known.
- the Y coordinate of the point can be known.
- the XY coordinates of the pressed point can be detected.
- the electrodes and the lead-out patterns are formed by printing application of a conductive paste such as silver paste and baking.
- the minimum width (hereinafter referred to as the minimum printing width) when stably printing and applying the electrodes and the drawing pattern is about 0.5 mm at present, and it is stable in a width narrower than the minimum printing width. It is known that printing applications may not be possible. If it is attempted to print and apply a width smaller than the minimum printing width, blur may occur.
- the width d2 is equal to or more than the print minimum width.
- the width of the connection portions 23a and 15a of the lead-out pattern 23 and the electrode 15 is at least three times the print minimum width.
- An object of this invention is to provide the touch panel which can make the width
- a transparent conductive film formed on each surface of a pair of glass substrates, a transparent conductive film forming surface of one of the glass substrates facing each other, and a lead pattern having a connection portion, and the lead pattern
- An electrode provided on the transparent conductive film of the other glass substrate, and a tip of the connecting portion of the lead pattern and a tip of the connecting portion of the electrode; And a conductive paste to be connected.
- connection portion of the lead pattern and the connection portion of the electrode By not positioning the connection portion of the lead pattern and the connection portion of the electrode in the same region in the extension direction, the width of the connection portion of the lead pattern and the electrode can be further reduced.
- 2A is a plan view (perspective view) of a connection portion of a conventional touch panel
- FIG. 2B is a side view
- FIG. 2C is a DD cross-sectional view of FIG. 2A.
- 4A is a plan view (perspective view) of the connection portion according to the first embodiment
- FIG. 4B is a side view
- FIG. 4C is a DD cross-sectional view of FIG. 4A.
- 5A is a plan view (perspective view) of the connection portion according to the second embodiment
- FIG. 5B is a side view
- FIG. 5C is a DD cross-sectional view of FIG.
- 6A is a plan view (perspective view) of a modified example of the connection portion
- FIG. 6B is a side view
- FIG. 6C is a DD cross-sectional view of FIG. 6A
- 7A is a plan view (perspective view) of a modified example of the connection portion
- FIG. 7B is a side view
- FIG. 7C is a DD cross-sectional view of FIG. 7A
- 8A is a plan view (perspective view) of a connection portion of another embodiment
- FIG. 8B is a side view
- FIG. 8C is a DD cross-sectional view of FIG. 8A.
- FIGS. 3 and 4 show an example of the first embodiment of the present invention. Similar to the electrodes 15 and 16 of the touch panel described in Patent Document 1, the electrodes 51 and 52 are provided on the transparent conductive film 13 of the upper glass substrate 11. Further, similarly to the lead patterns 23 and 24 of the touch panel described in Patent Document 1, the lead patterns 61 and 62 are formed on the lower glass substrate 12.
- the end faces in the extending direction of the connection portions 51a and 52a of the electrodes 51 and 52 are perpendicular to the extending direction. Further, the end surfaces in the extending direction of the connection portions 61a and 62a of the lead patterns 61 and 62 are perpendicular to the extending direction.
- the width of the electrodes 51 and 52 and the lead patterns 61 and 62 is, for example, the print minimum width. That is, the widths of the connection portions 51a and 52a and the connection portions 61a and 62a of the lead-out pattern are also set to, for example, the printing minimum width.
- the connecting portions 51 a, 52 a and 61 a, 62 a stretch the connecting portions 51 a, 52 a and 61 a, 62 a in a state where the upper glass substrate 11 and the lower glass substrate 12 are joined. It is configured not to be located in the same area in the direction.
- 4A is a plan view of a connection portion between the connection portion 51a and the connection portion 61a
- B is a side view
- C is a DD cross-sectional view of FIG. 4A.
- the connection portion between the connection portion 52a and the connection portion 62a is similarly configured.
- the fact that the two connecting portions are not located in the same region in the extending direction means that the two connecting portions do not enter each other. In other words, this means that the images obtained by projecting these connections in their width direction do not overlap.
- the touch panel described in Patent Document 1 as shown in FIG. 2A, an image obtained by projecting the connecting portion 15a and the connecting portion 23a in the width direction overlaps in the area a.
- the images obtained by projecting the connecting portions 51a and 52a and the connecting portions 61a and 62a in the width direction do not overlap.
- the conductive paste 32 is printed and applied by screen printing or the like so that the conductive paste 32 is in contact with the tips of the connection portions 51a and 52a and the tips of the connection portions 61a and 62a, thereby the electrodes 51 and 52 and the lead patterns 61, Electrically connect with 62.
- the connecting portion 15a is inserted into the U-shaped notch formed in the connecting portion 23a, and then a portion other than the tips of the connecting portions 15a and 23a Need not be connected to the conductive paste 31.
- the tips of the connection portions 51a, 52a, 61a, 62a not located in the same region in the stretching direction are simply in contact with the conductive paste 32, sufficient conductivity required to constitute a touch panel can be obtained. The person found it.
- connection parts 51a and 52a and the connection parts 61a and 62a are not positioned in the same area in the extension direction, whereby the size of the connection parts of the electrodes 51 and 52 and the lead patterns 61 and 62 is obtained. Can be made smaller.
- the widths of the connection portions 51a, 52a, 61, 62a can be set, for example, to the print minimum width.
- the width of the connecting portion by reducing the width of the connecting portion, the possibility of generating a Newton ring or cracking of the glass can be reduced as compared with the prior art, and furthermore, the variation of the operation load can be eliminated.
- the length L (see FIG. 4) of the portion where the connecting portions 51a, 52a, 61a, 62a and the conductive paste 32 are in contact with each other is 2 of the particle diameter (6 ⁇ m) of the conductor particles (silver particles). It is good if it is 12 ⁇ m of double. When the printing deviation and the sticking deviation are taken into consideration, the length L may be 0.2 mm or more. The same applies to other embodiments described later.
- FIG. 5 shows an example of connection parts of the connection part 51a and the connection part 61a according to the second embodiment.
- the connection portion between the connection portion 52a and the connection portion 62a is similarly configured.
- a substantially semicircular convex portion 51 b is formed at the tip of the connection portion 51 a of the electrode 51.
- a substantially semicircular convex portion 51 b is formed at the end of the connection portion 61 a of the lead-out pattern 61.
- the conductive paste 32 is applied with printing by applying the conductive paste 32 so that the convex portion 51 b of the electrode 51 and the convex portion 61 b of the lead-out pattern 61 contact the conductive paste 32 to electrically connect the electrode 51 and the lead-out pattern 61. Connect.
- the conductive paste 32 is sufficiently crushed when the upper glass substrate 11 and the lower glass substrate 12 are bonded. Because the upper glass substrate 11 is distorted, a Newton ring may occur.
- the convex portions 51b, 52b, 61b, 62b formed at the tip of the connecting portions 51a, 52a, 61a, 62a in this manner are brought into contact with the conductive paste 32, and the connecting portions 51a, 52a, 61a, 62a and the conductive paste
- the portions where the connection portions 51a, 52a, 61a, 62a and the conductive paste 32 overlap are the connection portions 51a, when viewed from the direction perpendicular to the paper surface of FIGS. 4A, 5A, 6A, 7A. It means a portion (that is, a connection portion) where the conductive paste 32 overlaps with 52a, 61a, 62a.
- the possibility of the Newton ring being generated or the glass being broken can be further reduced, and the variation of the operation load can be further eliminated.
- connection portions 51 a, 52 a, 61 a, 62 a it is not necessary to bring the entire width of the connection portions 51 a, 52 a, 61 a, 62 a into contact with the conductive paste 32.
- connection portions 51a, 52a, 61a, 62a are set to the printing minimum width
- the widths of the convex portions 51b, 52b, 61b, 62b become less than the printing minimum width, and stable printing application is not performed. As a result, it may be faded.
- the conductive paste 32 is brought into contact with the convex portion 51 b of the electrode 51 and the convex portion 61 b of the lead-out pattern 61, sufficient conductivity to constitute the touch panel can be obtained.
- the width of the connecting portions 51a, 52a, 61a, 62a may be greater than the print minimum width, and the widths of the protrusions 51b, 52b, 61b, 62b may be greater than the print minimum width.
- the convex portions 51b, 52b, 61b, 62b formed at the tip of the connection portions 51a, 52a, 61a, 62a have a shape projecting in the extension direction of the connection portions 51a, 52a, 61a, 62a. The same effect can be obtained.
- connection portions 51a and 61a For example, as shown in FIG. 6, a U-shaped notch is provided at the tip of the connection portions 51a and 61a, and 2 protrudes in the extending direction from each of both ends in the width direction of the connection portions 51a and 61a. You may form two convex parts 51c and 61c. Moreover, as shown in FIG. 7, you may form convex part 51d, 61d which protrudes in an extending
- the shapes of the connection portions 52a and 62a are also the same as these. By making the shape as illustrated in FIG. 6 and FIG. 7, it is possible to further reduce the overlapping portion of the connecting portions 51 a, 52 a, 61 a, 62 a and the conductive paste 32.
- connection portions 51a, 52a, 61a, 62a contact the conductive paste 32, but at least one connection portion is in the shape as described above and contacts the conductive paste 32. It may be Further, the shapes of the connection portions 51 a and 52 a of the electrode 51 and the connection portions 61 a and 62 a of the lead-out pattern 61 may be different.
- connection portions 51a, 52a, 61a and 62a are located, that is, lands are formed by the transparent conductive films 13 and 14. If the connection portions 51a, 52a, 61a, 62a are respectively positioned on the lands, the connection portions 51a, 52a and 61a, 62a can be connected more favorably and stably.
- FIG. 8 shows a state in which the land made of the transparent conductive films 13 and 14 is formed as described above, with respect to the connection portion between the connection portions 23a and 15a.
- reference numerals 32 and 33 denote lands.
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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)
- Push-Button Switches (AREA)
Abstract
Description
図3,4に、この発明の第一実施形態の例を示す。電極51,52が、特許文献1に記載されたタッチパネルの電極15,16と同様に、上ガラス基板11の透明導電膜13に設けられる。また、引き出しパターン61,62が、特許文献1に記載されたタッチパネルの引き出しパターン23,24と同様に、下ガラス基板12に形成される。
図5に、第二実施形態による接続部51aと接続部61aの接続部分の例を示す。接続部52aと接続部62aの接続部分についても同様に構成される。この例では、電極51の接続部51aの先端に、略半円状の凸部51bが形成されている。同様に、引き出しパターン61の接続部61aの先端にも、略半円状の凸部51bが形成されている。
接続部51a,52a,61a,62aの先端に形成した凸部51b,52b,61b,62bは、接続部51a,52a,61a,62aの延伸方向に突出した形状であれば、上記第二実施形態と同様の効果を得ることができる。
Claims (6)
- 一対のガラス基板の各一面に形成され、互いに対向する透明導電膜と、
一方のガラス基板の透明導電膜形成面に形成され、接続部を有する引き出しパターンと、
上記引き出しパターンの接続部と、この引き出しパターンの接続部の延伸方向において同一領域内に位置しない接続部を有し、他方のガラス基板の透明導電膜に設けられた電極と、
上記引き出しパターンの接続部の先端と上記電極の接続部の先端とを接続する導電ペーストと、
を備えるタッチパネル。 - 請求項1に記載のタッチパネルにおいて、
上記引き出しパターンの接続部と上記電極の接続部の少なくとも一方の先端にその延伸方向に突出して形成された凸部が、上記導電ペーストと接触している。 - 請求項2に記載のタッチパネルにおいて、
上記凸部は、略半円状である。 - 請求項2に記載のタッチパネルにおいて、
上記凸部は、上記引き出しパターンの接続部又は上記電極の接続部の幅方向の両端のそれぞれから突出する2つの凸部を有する。 - 請求項2に記載のタッチパネルにおいて、
上記凸部は、上記引き出しパターンの接続部又は上記電極の接続部の幅方向の中央から突出している。 - 請求項1から5の何れかに記載のタッチパネルにおいて、
上記各一面にそれぞれ形成された透明導電膜より成るランドを更に備え、
上記ランド上に上記引き出しパターンの接続部及び上記電極の接続部がそれぞれ配置されている。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980106840.3A CN102084323B (zh) | 2008-03-03 | 2009-03-02 | 触摸面板 |
CA2716811A CA2716811A1 (en) | 2008-03-03 | 2009-03-02 | Touch panel |
EP09716400A EP2251772A4 (en) | 2008-03-03 | 2009-03-02 | TOUCH SCREEN |
US12/920,500 US20110001719A1 (en) | 2008-03-03 | 2009-03-02 | Touch Panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008052085A JP4796597B2 (ja) | 2008-03-03 | 2008-03-03 | タッチパネル |
JP2008-052085 | 2008-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009110423A1 true WO2009110423A1 (ja) | 2009-09-11 |
Family
ID=41055978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/053847 WO2009110423A1 (ja) | 2008-03-03 | 2009-03-02 | タッチパネル |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110001719A1 (ja) |
EP (1) | EP2251772A4 (ja) |
JP (1) | JP4796597B2 (ja) |
CN (1) | CN102084323B (ja) |
CA (1) | CA2716811A1 (ja) |
TW (1) | TWI453648B (ja) |
WO (1) | WO2009110423A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011134176A (ja) * | 2009-12-25 | 2011-07-07 | Shoei:Kk | タッチパネルおよびその製造方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101689331B1 (ko) * | 2010-11-23 | 2016-12-26 | 삼성디스플레이 주식회사 | 터치 스크린 패널 일체형 평판표시장치 |
JP5097840B2 (ja) * | 2011-03-29 | 2012-12-12 | アルプス電気株式会社 | 入力装置及びその製造方法 |
US9501179B2 (en) * | 2011-08-04 | 2016-11-22 | Atmel Corporation | Touch sensor for curved or flexible surfaces |
JP5868721B2 (ja) * | 2012-02-10 | 2016-02-24 | ホシデン株式会社 | 入力装置 |
CN203386162U (zh) * | 2013-03-22 | 2014-01-08 | 群创光电股份有限公司 | 触控显示装置 |
JP5672338B2 (ja) * | 2013-06-04 | 2015-02-18 | Smk株式会社 | タッチパネルおよびタッチパネルの製造方法 |
WO2015083019A1 (en) * | 2013-12-08 | 2015-06-11 | Sokhi Sukhbir Singh | System for growing plant under shade |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0922636A (ja) * | 1995-07-03 | 1997-01-21 | Hitachi Aic Inc | タッチパネル |
JP2002082772A (ja) * | 2000-06-28 | 2002-03-22 | Hitachi Ltd | タッチパネルとその製造方法および、このタッチパネルを用いた画面入力型表示装置 |
JP2003323260A (ja) | 2002-04-30 | 2003-11-14 | Hosiden Corp | タッチパネルの電極接続構造 |
JP2004355181A (ja) * | 2003-05-28 | 2004-12-16 | Kawaguchiko Seimitsu Co Ltd | タッチパネル |
JP2006073278A (ja) * | 2004-08-31 | 2006-03-16 | Shoei:Kk | タッチパネル |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3960850B2 (ja) * | 2002-04-26 | 2007-08-15 | ホシデン株式会社 | タッチパネル |
TW200735732A (en) * | 2006-03-06 | 2007-09-16 | Wintek Corp | Method for manufacturing resistance touch panel |
JP5572080B2 (ja) * | 2010-12-15 | 2014-08-13 | 富士通コンポーネント株式会社 | タッチパネル |
-
2008
- 2008-03-03 JP JP2008052085A patent/JP4796597B2/ja not_active Expired - Fee Related
-
2009
- 2009-02-24 TW TW098105811A patent/TWI453648B/zh not_active IP Right Cessation
- 2009-03-02 CA CA2716811A patent/CA2716811A1/en not_active Abandoned
- 2009-03-02 WO PCT/JP2009/053847 patent/WO2009110423A1/ja active Application Filing
- 2009-03-02 US US12/920,500 patent/US20110001719A1/en not_active Abandoned
- 2009-03-02 EP EP09716400A patent/EP2251772A4/en not_active Withdrawn
- 2009-03-02 CN CN200980106840.3A patent/CN102084323B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0922636A (ja) * | 1995-07-03 | 1997-01-21 | Hitachi Aic Inc | タッチパネル |
JP2002082772A (ja) * | 2000-06-28 | 2002-03-22 | Hitachi Ltd | タッチパネルとその製造方法および、このタッチパネルを用いた画面入力型表示装置 |
JP2003323260A (ja) | 2002-04-30 | 2003-11-14 | Hosiden Corp | タッチパネルの電極接続構造 |
JP2004355181A (ja) * | 2003-05-28 | 2004-12-16 | Kawaguchiko Seimitsu Co Ltd | タッチパネル |
JP2006073278A (ja) * | 2004-08-31 | 2006-03-16 | Shoei:Kk | タッチパネル |
Non-Patent Citations (1)
Title |
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See also references of EP2251772A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011134176A (ja) * | 2009-12-25 | 2011-07-07 | Shoei:Kk | タッチパネルおよびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20110001719A1 (en) | 2011-01-06 |
CN102084323A (zh) | 2011-06-01 |
EP2251772A4 (en) | 2012-05-09 |
TW200951794A (en) | 2009-12-16 |
CN102084323B (zh) | 2013-07-17 |
JP2009211272A (ja) | 2009-09-17 |
TWI453648B (zh) | 2014-09-21 |
EP2251772A1 (en) | 2010-11-17 |
JP4796597B2 (ja) | 2011-10-19 |
CA2716811A1 (en) | 2009-09-11 |
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