CN202422093U - Capacitive touch screen capable of eliminating reflected light of metal bridge - Google Patents
Capacitive touch screen capable of eliminating reflected light of metal bridge Download PDFInfo
- Publication number
- CN202422093U CN202422093U CN2012200104473U CN201220010447U CN202422093U CN 202422093 U CN202422093 U CN 202422093U CN 2012200104473 U CN2012200104473 U CN 2012200104473U CN 201220010447 U CN201220010447 U CN 201220010447U CN 202422093 U CN202422093 U CN 202422093U
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- sensing electrode
- polaroid
- touch screen
- bonding coat
- phase shift
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Abstract
The utility model relates to a capacitive touch screen capable of eliminating reflected light of a metal bridge. The capacitive touch screen comprises an outer substrate and an inner substrate which are stacked, and also comprises a sensing electrode layer arranged on the outer side surface of the inner substrate. The capacitive touch screen is characterized by also comprising a polaroid and a lambda/4 delay membrane which are sequentially arranged on the inner side of the outer substrate and are positioned on the outer side of the sensing electrode layer, wherein an included angle being 45 degrees is formed between the optical axis of the lambda/4 delay membrane and the polarization axis of the polaroid; outer light rays penetrate through the polaroid and the lambda/4 delay membrane to form circular polarized light which is irradiated on the surface of a metal connection bridge; after the circular polarized light is reflected by the surface of the metal connection bridge, the rotation direction of the circular polarized light is reversed, and the circular polarized light penetrate through the lambda/4 delay membrane again so as to be converted into linear polarized light of which the polarization surface is perpendicular to the polarization axis of the polaroid; the linear polarized light cannot penetrate through the polaroid, so that the reflected light of the metal connection bridge is eliminated or restrained; and therefore, a user can see a displayed picture clearly.
Description
Technical field
The utility model relates to a kind of capacitance touch screen, relates in particular to the catoptrical capacitance touch screen of a kind of elimination metal bridge.
Background technology
In recent years, along with the fast development and the application of infotech, radio mobile communication and information household appliances, people grow with each passing day to the dependence of electronic product.In order to reach the purpose that more convenient use, volume are more lightly changed and had more hommization, many electronic products have adopted touch-screen to replace traditional keyboard or mouse as input media.Existing touch-screen is broadly divided into types such as condenser type, resistance-type, photosensitizing type.Capacitance touch screen has been widely applied to each electronic product, in mobile phone, panel computer.The characteristics of capacitance touch screen are that transmitance is high, and touch and exert pressure and needn't exert oneself, and can resist abominable external environment; For example: water, temperature variation, humidity etc.; So long service life, survey when can also realize a plurality of touch point during work, manipulate humanized.
The fitting body of substrate and outer substrate in capacitance touch screen generally is designed to; Wherein interior substrate is provided with sensing electrode layer and corresponding circuit; Play the effect of touch sensitive, outer substrate then is used to protect the sensing electrode layer, and; Usually substrate is provided with and covers layer, patterned layer outside, plays effect attractive in appearance.
The sensing electrode layer comprises a plurality of first sensing electrode and a plurality of second sensing electrodes that extend along second direction that extend along first direction, the interlaced formation induction arrays of first sensing electrode and second sensing electrode; Electrically do not connect mutually between each first sensing electrode, electrically do not connect mutually between each second sensing electrode, electrically be not connected between first sensing electrode and second sensing electrode.When the user contacted touch screen with finger, first sensing electrode at contact point place, the electric capacity of second sensing electrode changed, and through electric circuit inspection, just can judge the generation of touch and the coordinate of contact point.Transparent for capacitance touch screen is designed to, above-mentioned first sensing electrode, second sensing electrode often adopt nesa coating, and (ITO) is made like tin indium oxide.
The lateral surface of substrate in above-mentioned first sensing electrode, second sensing electrode are arranged on; Wherein a kind of method for designing commonly used forms first sensing electrode, second sensing electrode for adopting with one deck nesa coating; Make the sensing electrode of winning, second sensing electrode have the optics consistance; Intersect owing to exist between first sensing electrode, second sensing electrode; Therefore also be designed with jumper wire construction at infall, make the sensing electrode of winning, second sensing electrode can conducting on direction separately, and can not be short-circuited each other.
Jumper wire construction generally comprises the bottom that separated by insulation course (cross-over block) and connects and be connected with the top, and the bottom connection is connected with the top and is respectively applied for first sensing electrode and second sensing electrode that connection is separated by the point of crossing.The bottom connects one of them that is connected with the top and can be formed by nesa coating, adopts metal film formation in addition first, and we are called metal connection bridge with the film formed connection of this metal, is designed to the vertical bar shaped of certain width as the one of which.Metal film can be the single or multiple lift film of elemental metals or alloy formation, generally also is used to form the low resistance circuit of touch-screen periphery.
In above-mentioned capacitance touch screen, because the luminance factor of metal film is higher, the reflected light that metal connects bridge often easily is not used the person to be perceiveed, and has influence on the user to watching through the display frame of capacitance touch screen.
Summary of the invention
The technical matters that the utility model will solve provides the catoptrical capacitance touch screen of a kind of elimination metal bridge; The catoptrical capacitance touch screen of this elimination metal bridge; Can eliminate or contain the reflected light of metal bridge, make the user can clearly watch display frame.The technical scheme that adopts is following:
The catoptrical capacitance touch screen of a kind of elimination metal bridge; The outer substrate and the interior substrate that comprise superimposed setting; And the sensing electrode layer on the substrate lateral surface in being arranged on; The sensing electrode layer comprises a plurality of first sensing electrode, a plurality of second sensing electrode and a plurality of jumper wire constructions that extend along second direction that extend along first direction; First sensing electrode and second sensing electrode form and interlaced formation induction arrays by nesa coating, and jumper wire construction is located at the infall of first sensing electrode and second sensing electrode, and jumper wire construction comprises that the bottom connection that is separated by cross-over block is connected with the top; The bottom connects to be connected with the top and is respectively applied for first sensing electrode and second sensing electrode that connection is separated by the point of crossing; One of them of bottom connection or top connection formed by nesa coating, and another one then is that the film formed metal of metal connects bridge, it is characterized in that: also comprise polaroid and λ/4 phase shift films; Polaroid and λ/4 phase shift films are located at the inboard of outer substrate successively, and are in the outside of sensing electrode layer; λ/the optical axis of 4 phase shift films becomes 45 ° angle with the polarizing axis of polaroid.
The above-mentioned outside is meant the side near the user, and the inboard is meant the side away from the user.
Extraneous light forms a kind of circularly polarized light after passing polaroid and λ/4 phase shift films, and be radiated at metal and connect the bridge surface, and by after surperficial reflection of metal connection bridge; The polarisation sense of rotation of circularly polarized light takes a turn for the worse; Therefore once more through behind λ/4 phase shift films, be converted into the linearly polarized light of plane of polarization perpendicular to the polaroid polarizing axis, this polarized light can't pass through polaroid; Therefore; The reflected light of metal connection bridge is eliminated or has received containment, thereby the person of avoiding the use of receives the catoptrical interference that metal connects bridge when watching display frame, can more clearly watch display frame.
Preferred version as the utility model is characterized in that: also comprise first bonding coat and second bonding coat; Polaroid is attached on the medial surface of outer substrate through first bonding coat; λ/4 phase shift films are attached on the medial surface of polaroid through second bonding coat.Adopt first bonding coat and second bonding coat to attach polaroid and λ/4 phase shift films, make structure more firm, avoid simultaneously producing reflected light at the air interface place, make the user can more clearly watch display frame owing to there is air layer.
As the further preferred version of the utility model, it is characterized in that: also comprise the 3rd bonding coat, fit each other through the 3rd bonding coat between λ/4 phase shift films and the sensing electrode layer.Adopt the 3rd bonding coat fit λ/4 phase shift films and sensing electrode layer, make structure more firm, avoid simultaneously producing reflected light at the air interface place, make the user can more clearly watch display frame owing to there is air layer.
The utility model compared with prior art has following advantage: through arranged outside polaroid and λ/4 phase shift films at the sensing electrode layer, eliminate or contain the reflected light of metal bridge, make the user can clearly watch display frame.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred implementation;
Fig. 2 is the sectional view of Fig. 1 along A-A.
Embodiment
Do further explanation below in conjunction with the preferred implementation of accompanying drawing and the utility model.
As depicted in figs. 1 and 2; The catoptrical capacitance touch screen of this elimination metal bridge; The outer substrate 1 and interior substrate 2 that comprise superimposed setting; And the sensing electrode layer 3 on substrate 2 lateral surfaces in being arranged on, also comprise polaroid 4, λ/4 phase shift films 5, first bonding coat 6, second bonding coat 7 and the 3rd bonding coat 8; Sensing electrode layer 3 comprises that a plurality of first sensing electrode 301, a plurality of second sensing electrode 302 and a plurality of jumper wire construction 303, the first sensing electrodes 301 that extend along second direction that extend along first direction form also interlaced formation induction arrays with second sensing electrode 302 by nesa coating; Jumper wire construction 303 is located at the infall of first sensing electrode 301 and second sensing electrode 302; Jumper wire construction 303 comprises that the bottom that separated by cross-over block 3031 connects 3032 and is connected 3033 with the top; The bottom connects 3032 and is used to connect the secondth sensing electrode 302 that is separated by the point of crossing; The top connects 3033 and is used to connect first sensing electrode 301 that is separated by the point of crossing, and the bottom connects 3032 and formed by nesa coating, and it is the film formed metal connection of metal bridge that the top connects 3033; 4 of polarisations are attached on the medial surface of outer substrate 1 through first bonding coat 6; λ/4 phase shift films 5 are attached on the medial surface of polaroid 4 through second bonding coat 7; Fit each other through the 3rd bonding coat 8 between λ/4 phase shift films 5 and the sensing electrode layer 3; The optical axis of λ/4 phase shift films 5 becomes 45 ° angle with the polarizing axis of polaroid 4.
Extraneous light forms a kind of circularly polarized light after passing polaroid 4 and λ/4 phase shift films 5; Be radiated at metal and connect bridge (top connects 3033) surface; And after surperficial reflection of metal connection bridge (top connects 3033), the polarisation sense of rotation of circularly polarized light takes a turn for the worse, therefore once more through behind λ/4 phase shift films 5; Be converted into the linearly polarized light of plane of polarization perpendicular to polaroid 4 polarizing axis; This polarized light can't pass through polaroid 4, and therefore, the reflected light that metal connects bridge (top connects 3033) is eliminated or has received containment; Connect the bridge catoptrical interference of (top connects 3033) thereby receive metal when the person of avoiding the use of watches display frame, can more clearly watch display frame.
Claims (3)
1. eliminate the catoptrical capacitance touch screen of metal bridge for one kind; The outer substrate and the interior substrate that comprise superimposed setting; And the sensing electrode layer on the substrate lateral surface in being arranged on; The sensing electrode layer comprises a plurality of first sensing electrode, a plurality of second sensing electrode and a plurality of jumper wire constructions that extend along second direction that extend along first direction; First sensing electrode and second sensing electrode form and interlaced formation induction arrays by nesa coating, and jumper wire construction is located at the infall of first sensing electrode and second sensing electrode, and jumper wire construction comprises that the bottom connection that is separated by cross-over block is connected with the top; The bottom connects to be connected with the top and is respectively applied for first sensing electrode and second sensing electrode that connection is separated by the point of crossing; One of them of bottom connection or top connection formed by nesa coating, is that the film formed metal of metal connects bridge in addition first, it is characterized in that: also comprise polaroid and λ/4 phase shift films; Polaroid and λ/4 phase shift films are located at the inboard of outer substrate successively, and are in the outside of sensing electrode layer; λ/the optical axis of 4 phase shift films becomes 45 ° angle with the polarizing axis of polaroid.
2. capacitance touch screen as claimed in claim 1 is characterized in that: also comprise first bonding coat and second bonding coat; Polaroid is attached on the medial surface of outer substrate through first bonding coat; λ/4 phase shift films are attached on the medial surface of polaroid through second bonding coat.
3. capacitance touch screen as claimed in claim 2 is characterized in that: also comprise the 3rd bonding coat, fit each other through the 3rd bonding coat between λ/4 phase shift films and the sensing electrode layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104473U CN202422093U (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen capable of eliminating reflected light of metal bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200104473U CN202422093U (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen capable of eliminating reflected light of metal bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422093U true CN202422093U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200104473U Expired - Lifetime CN202422093U (en) | 2012-01-11 | 2012-01-11 | Capacitive touch screen capable of eliminating reflected light of metal bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347157A (en) * | 2013-07-31 | 2015-02-11 | 三星Sdi株式会社 | Transparent conductor and optical display apparatus comprising the same |
| CN109579990A (en) * | 2015-08-05 | 2019-04-05 | 唯亚威通讯技术有限公司 | Optical filter and spectroscope |
-
2012
- 2012-01-11 CN CN2012200104473U patent/CN202422093U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347157A (en) * | 2013-07-31 | 2015-02-11 | 三星Sdi株式会社 | Transparent conductor and optical display apparatus comprising the same |
| CN109579990A (en) * | 2015-08-05 | 2019-04-05 | 唯亚威通讯技术有限公司 | Optical filter and spectroscope |
| US11237049B2 (en) | 2015-08-05 | 2022-02-01 | Viavi Solutions Inc. | Optical filter and spectrometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |