CN100373402C - Touch control panel and display system and electronic apparatus using the same - Google Patents
Touch control panel and display system and electronic apparatus using the same Download PDFInfo
- Publication number
- CN100373402C CN100373402C CNB2004100296149A CN200410029614A CN100373402C CN 100373402 C CN100373402 C CN 100373402C CN B2004100296149 A CNB2004100296149 A CN B2004100296149A CN 200410029614 A CN200410029614 A CN 200410029614A CN 100373402 C CN100373402 C CN 100373402C
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- conducting film
- transparency carrier
- signal line
- touch panel
- ground loop
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Abstract
The present invention relates to a contact control type panel which comprises an upper transparent basal plate, a lower transparent basal plate, an insulating spacer, a plurality of signal lines and an earth circuit, wherein the lower surface of the transparent basal plate is provided with an upper conducting film; the upper surface of the lower transparent basal plate is provided with a lower conducting film; the insulating spacer is arranged between the conducting films of the upper transparent basal plate and the lower transparent basal plate for separating the two conducting films; each of the signal lines is arranged on the edge of the upper conducting film or the edge of the lower conducting film, and is separated from one conducting film or one signal line by an adhesive agent; the earth circuit is electrically insulated from the signal lines, the upper conducting film and the lower conducting film by an insulating area, and the earth circuit is used for electrically connecting to an external earth terminal.
Description
Technical field
The present invention is about a kind of touch panel, particularly relevant for a kind of touch panel with electro-static discharge protective ability.
Background technology
Fig. 1 shows the synoptic diagram of a traditional four-wire type touch panel 101.The sectional view of Fig. 2 for looking along the A-A ' line of Fig. 1.Please see figures.1.and.2 simultaneously, touch panel comprises transparency carrier 100 on, once transparency carrier 200, one insulation spacer 600.The lower surface of last transparency carrier 100 scribbles (the indium tin oxide of ITO film on; Tin indium oxide) 120, the upper surface of following transparency carrier 200 scribbles ITO film 220.Insulation spacer 600 is between the two ITO films 120 and 220 on upper and lower transparency carrier 100 and 200, in order to two ITO films were opened in 120,220 minutes.
Between upper and lower ITO film 120 and 220 the edge, solid (for example double faced adhesive tape) 500 is then arranged in order to signal line and another ITO film separates or separate with another signal line.In the edge of panel the zone of signal line is arranged, be called the signal line district, be denoted as S; Zone beyond the signal line then is viewing area AA (active area; The active region).
When last transparency carrier 100 is subjected to the external force touch-control, for example point or electronic pen (stylus), have electrical contact between the two ITO films 120 and 220, and generation voltage, and by sensing signal line 310,320,410 and 420 sensing signals, by transmission signal line 310a, 320a, 410a and 420a signal is transferred out again.
Fig. 3 shows that one has the display system of contact panel.As shown in FIG., after the analog signal S1 that controller 103 is spread out of contact panel 101 calculates, resulting relative position is made suitable movement response via the opposite position of CPU1 05 on LCD panel 107.Yet when the operation of this display system, static discharge but may destroy electronic package in the controller 103 by contact panel 101.
Summary of the invention
In view of this, primary and foremost purpose of the present invention is to avoid static discharge to pass through contact panel and has destroyed the electronic package in the controller.
According to above-mentioned purpose, the invention provides a kind of touch panel with electro-static discharge protective ability, comprise transparency carrier, its lower surface has upper conductive film; Following transparency carrier, its upper surface has lower conductive film; Insulation spacer is between two conducting films on this upper and lower transparency carrier, in order to separate two conducting films; A plurality of signal line, every signal line be positioned at or the edge of lower conductive film on, and separate with another conducting film or another signal line by solid; And ground loop, be electrically insulated with these signal line, upper conductive film and lower conductive film by insulation layer, and this ground loop is in order to be electrically connected to outside earth terminal.
Description of drawings
Fig. 1 shows the synoptic diagram of a traditional four-wire type touch panel.
Fig. 2 is the sectional view along the A-A ' line of Fig. 1.
Fig. 3 is for showing that one has the display system of contact panel.
Fig. 4 shows the synoptic diagram of touch panel of the present invention.
Fig. 5 is the sectional view along the A-A ' line of Fig. 4.
Fig. 6 is the synoptic diagram with display system of touch panel of the present invention.
Fig. 7 is the synoptic diagram with electronic installation of touch panel of the present invention.
The figure number explanation
200 times transparency carriers of 105 CPU, 107 LCD panels;
220 times ITO films of ITO film on 600 insulation spacer 120
S signal line district AA viewing area 500 solids
310,320 sensing signal line
410,420 sensing signal line
310a, 320a, 410a, 420a transmission signal line
20 times transparency carriers of transparency carrier on 10
60 insulation spacer, 12 upper conductive films
22 lower conductive films, 50 solids
31,41,42 times sensing signal line of sensing signal line on 32
G1 ground loop 1a first conducting film
The 2a second conducting film 22a the 3rd conducting film
Glb ground wire I1 insulation layer
113 controllers, 115 CPU
117 LCD panels, 120,132 display systems
130 electronic installations, 134 assembly controllers
136 user's interfaces, 138 shells
31a, 32a, 41a, 42a transmission signal line
Embodiment
Fig. 4 shows the synoptic diagram according to the four-wire type touch panel 11 of a preferred embodiment of the present invention.Fig. 5 is the sectional view along the A-A ' line of Fig. 4.Please be simultaneously with reference to Fig. 4, Fig. 5, contact panel 11 of the present invention comprises transparency carrier 10, following transparency carrier 20, insulation spacer 60, a plurality of signal line, and ground loop.In the present invention, upper and lower transparency carrier 10,20 can be glass or plastics.For instance, upper and lower transparency carrier 10,20 can be polyester plastics, for example PET (polye thylene terephthalate; Polyethylene terephthalate).In touch-control, last transparency carrier 10 is preferably a pliability (flexible) plastics for convenience.
The lower surface of last transparency carrier 10 is formed with upper conductive film 12, and the upper surface of following transparency carrier 22 is formed with lower conductive film 22.Upper and lower conducting film 12 and 22 usefulness as resistive layer can be ITO (tin indium oxide), tin oxide (tin oxide) or antimony tin (ATO; Antimony-tin-oxide).Insulation spacer 60 is between upper and lower transparency carrier 10 and 20, in order to two conducting films 10 with opened in 20 minutes.
Signal line can be metal wire, for example silver-colored line, can comprise four sensing signal line, sensing signal line 31 and 32 are gone up in the viewing area (AA) that promptly is positioned at upper conductive film 12 relatively two on the two edges, and relative two the following sensing signal line 41 on the two edges and 42 in the viewing area (AA) that is positioned at lower conductive film 22, wherein descend sensing signal line 41 and 42 and last sensing signal line 31 and 32 compositions one rectangular-shaped.Signal line comprises that again four transmission signal line 31a, 32a, 41a, 42a are connected with 42 with sensing signal line 31,32,41 respectively.Between signal line 41,42 and the upper conductive film 12, and between signal line 31a, 32a and the lower conductive film 22, separate by solid (for example double faced adhesive tape) 50.
The invention is characterized in, provide ground loop G1 around living these sensing signal line 31,32,41,42 and these transmission signal lines 31a, 32a, 41a, 42a, and be electrically insulated with these signal line 31,32,41,42, these transmission signal lines 31a, 32a, 41a, 42a, upper conductive film 12 and lower conductive film 22 by insulation layer I1, and ground loop G1 is by ground wire G1b, be electrically connected to outside earth terminal (not shown), for example the earth terminal of the earth terminal of the earth terminal of touching control panel controller, flat-panel screens or electronic installation.
In addition, in present embodiment, ground loop is made of the conduction combination layer, as shown in Figure 5.Ground loop G1 can comprise the first conducting film 12a, the second conducting film 2a and the 3rd conducting film 22a, and wherein the first, the 3rd conducting film 12a, 22a can be ITO (tin indium oxide), tin oxide (tin oxide) or antimony tin (ATO; Antimony-tin-oxide), and the first conducting film 12a can form with the upper conductive film on the last transparency carrier 10 12, and the 3rd conducting film 22a can form with the lower conductive film 22 on the transparency carrier 20 down.The second conducting film 2a can be metal level, for example silver-colored line layer.Because this insulation layer I1 is in order to separate ground loop G1 and these sensing signal line 31,32,41,42, these transmission signal lines 31a, 32a, 41a, 42a, upper conductive film 12 and lower conductive film 22, therefore, ground loop G1 and these sensing signal line 31,32,41 and 42, upper conductive film 12 and lower conductive film 22 are electrically insulated.In this example, insulation layer I1 can be by being made of megohmite insulant, silicon dioxide for example, perhaps, also can a space be filled with air be electrically insulated ground loop G1 and these sensing signal line 31,32,41,42, these transmission signal lines 31a, 32a, 41a, 42a, upper conductive film 12 and lower conductive film 22.
When last transparency carrier 10 is subjected to the external force touch-control, for example with finger or electronic pen (stylus) when pushing, have electrical contact between two conducting films 12 and 22, and generation voltage, by sensing signal line 31,32,41,42 sensing signals, transfer to touching control panel controller by transmission signal line 31a, 32a, 41a, 42a again.
In the present invention owing to have ground loop, so when display system is operated, static discharge on the contact panel will be conducted to the earth terminal of external circuit, for example the earth terminal of the earth terminal of the earth terminal of touching control panel controller, flat-panel screens or electronic installation.Therefore, static discharge just can not remove to damage electronic package in the touching control panel controller via transmission line.
As shown in Figure 6, in display system 120, display module for example is that a LCD assembly 117 is electrically coupled to touch panel 11, wherein touch panel has a viewing area (active area), and have a viewing area (display area) on the display module, and the position on the active area can be corresponding with the position on the viewing area.For instance, pointed or electronic pen (stylus) when touching, between two conducting films 12,22, can be produced electrically contact when last transparency carrier 10. Sensing signal line 31,32,41,42 can be by transmission signal line 31a, 32a, 41a, 42a, and transmission current signal and/or voltage signal are to touch panel controller 113 (as shown in Figure 6).By existing conventional art, signal is obtained the position of touching thus.
Because this ground loop; display system with this touch panel; can static discharge be released into the earth terminal of an outside by touch panel; for example the earth terminal of a flat-panel screens or an electronic installation can not damaged by static discharge with the touch panel controller in the protection electronic package.
Though foregoing of the present invention is made example with the four-wire type contact panel, also be applicable to five-line, six line formulas or eight line formula touch panels.
In sum, in touch panel of the present invention, ground loop centers on these sensing signal line, and is electrically insulated with these signal line, upper and lower conducting film, and is electrically connected to the earth terminal of an outside.So, the electronic package in the touching control panel controller then can not be subjected to the damage of electrostatic discharge from contact panel.That is to say, strengthened the electro-static discharge protective ability of electronic package in the touching control panel controller.
Fig. 7 roughly represents an electronic installation 130, uses to have one of aforementioned touch panel 11 display system 132.Electronic installation 130 can be a portable apparatus, for example PDA, mobile computer, flat computer (tablet computer), mobile phone or display equipment or the like.In general, electronic installation 130 comprises that a shell 138, has display system 1 32, an assembly controller 134 and user's interface 136 of this touch panel 11 or the like.In addition, this earth conductor (be exactly ground loop G1) is total be coupled to the earth terminal (chassis ground) of electronic installation.
Moreover touch panel of the present invention can place electronic installation, and as user's input media, and unconformability is the part of display system.For instance, touch panel of the present invention can be used in the electronic installation, as an input media independently, the for example backing plate (pads) of a writing or drawing, dull and stereotyped (tablets), or need the input media of other patterns such as the user contacts, electronic pen input, or as a part of peripheral unit of relatively large electronic installation, or be electrically coupled to the peripheral unit of another electronic installation, for example a computer installation or machine.
Touch panel of the present invention as mentioned above is connected to a LCD display system, yet the present invention can also be used in the display system of other pattern, for example makes one of electricity consumption slurry display module or cathode-ray tube display assembly display system.
Though the present invention discloses as above with preferred embodiment; right its is not in order to restriction the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; change and retouching when doing, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. a touch panel is characterized in that, comprising:
Transparency carrier on one, its lower surface has a upper conductive film;
Transparency carrier once, its upper surface has a lower conductive film;
One insulation spacer is between two conducting films on this upper and lower transparency carrier, in order to separate two conducting films;
A plurality of signal line, every signal line be positioned on this or the edge of this lower conductive film on, and separate with another conducting film or another signal line by solid; And
One ground loop is made of a conduction combination layer; This conduction combination layer comprises first conducting film, second conducting film and the 3rd conducting film, this first conducting film is arranged on the lower surface of transparency carrier on this, this second conducting film is arranged on the lower surface of this first conducting film, and the 3rd conducting film is arranged between this second conducting film and this time transparency carrier; This ground loop is electrically insulated with these a plurality of signal line, upper conductive film and lower conductive film by an insulation layer, and this ground loop is electrically connected to the earth terminal of an outside.
2. touch panel as claimed in claim 1 is characterized in that, this first conducting film and the 3rd conducting film are tin indium oxide or tin oxide or antimony tin; This second conducting film is a metal level.
3. touch panel as claimed in claim 1 is characterized in that, this ground loop more comprises a ground wire, in order to connect this ground loop to this outside earth terminal.
4. touch panel as claimed in claim 3 is characterized in that, this ground wire is in order to connect the earth terminal of this ground loop to one flat display panel.
5. a display system is characterized in that, this display system comprises a touch panel and display module;
This touch panel has a viewing area, and wherein this touch panel comprises, transparency carrier on, and transparency carrier lower surface has a upper conductive film on this; Transparency carrier once, this time transparency carrier upper surface has a lower conductive film; One insulation spacer, this insulation spacer are between two conducting films on this upper and lower transparency carrier, in order to separate two conducting films; A plurality of signal line, every signal line be positioned on this or the edge of this lower conductive film on, and separate with another conducting film or another signal line by solid; And a ground loop, this ground loop is made of a conduction combination layer; This conduction combination layer comprises first conducting film, second conducting film and the 3rd conducting film, this first conducting film is arranged on the lower surface of transparency carrier on this, this second conducting film is arranged on the lower surface of this first conducting film, and the 3rd conducting film is arranged between this second conducting film and this time transparency carrier; This ground loop is electrically insulated with these a plurality of signal line, upper conductive film and lower conductive film by an insulation layer, and this ground loop is electrically connected to the earth terminal of an outside;
This display module is electrically coupled to this touch panel, has a viewing area, and wherein the position in the viewing area of this touch panel can be corresponding to the position in this viewing area.
6. display system as claimed in claim 5 is characterized in that, this ground loop more comprises a ground wire, in order to connect this ground loop to this outside earth terminal.
7. display system as claimed in claim 6 is characterized in that, this display module is a LCD assembly, an electricity slurry display module or a cathode ray tube assembly.
8. an electronic installation is characterized in that, this electronic installation comprises: a display system and an assembly controller;
This display system comprises touch panel and display module;
This touch panel has a viewing area, and this touch panel comprises: go up transparency carrier, transparency carrier lower surface has a upper conductive film on this; Following transparency carrier, following transparency carrier upper surface has lower conductive film; Insulation spacer, this insulation spacer are between two conducting films on this upper and lower transparency carrier, in order to separate two conducting films; A plurality of signal line, every signal line be positioned on this or the edge of this lower conductive film on, and separate with another conducting film or another signal line by solid; And ground loop, this ground loop is made of the conduction combination layer; This conduction combination layer comprises first conducting film, second conducting film and the 3rd conducting film, this first conducting film is arranged on the lower surface of transparency carrier on this, this second conducting film is arranged on the lower surface of this first conducting film, and the 3rd conducting film is arranged between this second conducting film and this time transparency carrier; This ground loop is electrically insulated with these a plurality of signal line, upper conductive film and lower conductive film by insulation layer, and this ground loop is electrically connected to the earth terminal of an outside; This display module is electrically coupled to this touch panel, and this display module has the viewing area, and the position in the viewing area of this touch panel is corresponding to the position in this viewing area;
This assembly controller is coupled to this display system, and this assembly controller is handled data corresponding to an image to be presented in this display system.
9. electronic installation as claimed in claim 8 is characterized in that, this ground loop more comprises a ground wire, in order to connect this ground loop to this outside earth terminal.
10. electronic installation as claimed in claim 9 is characterized in that, this electronic installation is a portable apparatus or a display, and this display module is a LCD assembly, electricity slurry display module or user's input media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100296149A CN100373402C (en) | 2004-03-19 | 2004-03-19 | Touch control panel and display system and electronic apparatus using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100296149A CN100373402C (en) | 2004-03-19 | 2004-03-19 | Touch control panel and display system and electronic apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1670759A CN1670759A (en) | 2005-09-21 |
| CN100373402C true CN100373402C (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100296149A Expired - Fee Related CN100373402C (en) | 2004-03-19 | 2004-03-19 | Touch control panel and display system and electronic apparatus using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100373402C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008164787A (en) | 2006-12-27 | 2008-07-17 | Epson Imaging Devices Corp | Liquid crystal display device |
| CN102446012B (en) * | 2010-09-30 | 2015-04-08 | 联胜（中国）科技有限公司 | Touch panel structure and touch display panel |
| KR101322998B1 (en) * | 2010-10-01 | 2013-10-29 | 엘지디스플레이 주식회사 | Electrostatic capacity type touch screen panel |
| KR101493556B1 (en) * | 2011-10-27 | 2015-02-16 | 엘지디스플레이 주식회사 | Touch sensor integrated type organic light emitting diode display |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153572A (en) * | 1990-06-08 | 1992-10-06 | Donnelly Corporation | Touch-sensitive control circuit |
| US5844175A (en) * | 1995-01-31 | 1998-12-01 | Matsushita Electric Industrial Co., Ltd. | Analog-type transparent touch panel with improved electrode arrangement and simplified method for producing the same |
-
2004
- 2004-03-19 CN CNB2004100296149A patent/CN100373402C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153572A (en) * | 1990-06-08 | 1992-10-06 | Donnelly Corporation | Touch-sensitive control circuit |
| US5844175A (en) * | 1995-01-31 | 1998-12-01 | Matsushita Electric Industrial Co., Ltd. | Analog-type transparent touch panel with improved electrode arrangement and simplified method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1670759A (en) | 2005-09-21 |
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Granted publication date: 20080305 Termination date: 20160319 |