CN106095214B - Mutual capacitance type touch screen - Google Patents
Mutual capacitance type touch screen Download PDFInfo
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- CN106095214B CN106095214B CN201610749238.3A CN201610749238A CN106095214B CN 106095214 B CN106095214 B CN 106095214B CN 201610749238 A CN201610749238 A CN 201610749238A CN 106095214 B CN106095214 B CN 106095214B
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- sensing unit
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- touch screen
- mutual capacitance
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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
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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)
Abstract
The invention discloses a kind of mutual capacitance type touch screens, the touch screen includes flexible circuit board, multiple sensing units of touch chip and array arrangement, the sensing unit of every a line connects to form row unit, the line number of the row unit is the even number N greater than 2, the flexible circuit board is connected to by same scan line after the row unit of line n and the row unit of the n-th+N/2 row are in parallel, n is positive integer and is not more than N/2, the sensing unit of each column connects and is connected to the flexible circuit board, the sensing unit is electrically connected to the touch chip by the flexible circuit board.Do not go together unit sensing unit it is parallel with one another and flexible circuit board is commonly connected to by both common leads, flexible circuit board can be connected to simultaneously by multiple row units by common lead, reduce number of leads, save the frame space of touch screen, conducive to narrow frame design, and the two can simultaneously scanning work, improve scan efficiency.
Description
Technical field
The present invention relates to field of display technology, more particularly, to a kind of mutual capacitance type touch screen.
Background technique
Touch screen (TP, touch panel) is a kind of induction type liquid crystal of the input signals such as receivable contact or finger
Show equipment, when operator contacts the graphic button on screen, the haptic feedback system on screen can be according to preprogramming
Formula drives various attachment devices, is substituted for mechanical push button panel, and produce vividly by liquid crystal display picture
Visual and sound effects.Mutual capacitance type touch screen is in glass panel surface tin indium oxide (ITO, Indium tin oxide) material
Transverse electrode and longitudinal electrode is made, the place that two arrays of electrodes intersects will form capacitor, and in touch detection, mutual capacitance screen is successively
Laterally and longitudinally electrode determines lateral coordinates and longitudinal coordinate respectively, then forms according to the variation for touching front and back capacitor respectively
The touch coordinate of plane.
In the prior art, the sensing module of mutual capacitance type touch screen is rearranged by multiple identical sensing unit arrays,
The transmitting terminal at the sensing unit both ends of every a line requires individual lead and is connected to flexible circuit board, leads to touch screen two sides mistake
More leads occupies a large amount of arrangement space of frame, reduces the flexibility of touch screen structure design, is unfavorable for narrow side frame panel
Design uses；And the mode scan efficiency for progressively scanning sensing unit is low, and elapsed time is more, occupies pixel charging time.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of mutual capacitance type touch screens, touch in the prior art to solve
Shield the excessive lead in two sides and occupy a large amount of arrangement space of frame, the flexibility of touch screen structure design is low, is unfavorable for narrow frame
The design of panel, and sensing unit scan efficiency is low, the more problem of elapsed time.
In order to solve the above technical problems, the present invention provides a kind of mutual capacitance type touch screen, the touch screen includes flexible wires
Multiple sensing units of road plate, touch chip and array arrangement, the sensing unit of every a line connects to form row unit, described
The line number of row unit is even number N greater than 2, the row unit of line n and the row unit of the n-th+N/2 row it is in parallel after pass through
It is connected to the flexible circuit board with scan line, n is positive integer and is not more than N/2, and the sensing unit of each column is connected
And it is connected to the flexible circuit board, the sensing unit is electrically connected to by the touch chip by the flexible circuit board.
Further, each sensing unit includes transmitting terminal and receiving end, and the transmitting terminal of each sensing unit passes through
The common scanning line of the sensing unit of every a line of connecting connects, and the receiving end of each sensing unit passes through each column of connecting
The sensing unit common reception line connection.
Further, the sensing unit that the row unit parallel with one another is belonged in same row will by different leads
The receiving end series connection.
Further, the quantity of the common scanning line of row unit described in same group of parallel connection is two, for improving the row
The scanning speed of unit.
Further, the common scanning line is located at the both ends bezel locations of the touch screen.
Further, the sensing unit includes the first sensing unit and the second sensing unit, and the row unit of line n is equal
For first sensing unit, the row unit of the n-th+N/2 row is second sensing unit, same row of connecting it is described
The lead of the receiving end of first sensing unit passes through second sensing unit and with first sensing unit without being electrically connected
It connects.
Further, the sensing unit is embedded in the liquid crystal pixel cells of the touch screen.
Further, the material of the sensing unit is indium oxide tin glass or indium tin oxide films.
Further, the mutual capacitance type touch screen further includes eyeglass panel, and the eyeglass panel is installed on the mutual capacitance
The surface layer of formula touch screen simultaneously is used to protecting and decorating the mutual capacitance type touch screen.
Further, the material of the eyeglass panel is tempered glass or polyethylene terephthalate.
Beneficial effects of the present invention are as follows: the sensing unit for unit of not going together is parallel with one another and passes through both common leads
It is commonly connected to flexible circuit board, i.e., flexible circuit board can be connected to simultaneously by multiple row units by common lead, reduction is drawn
Line number amount saves the frame space of touch screen, is conducive to narrow frame design, and the two can touch in scanning work, shortening simultaneously
Shield sweep time, improve scan efficiency, reserves sufficient pixel charging time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other obvious modes of texturing are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of sensing unit matrix arrangement provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the first sensing unit provided in an embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the second sensing unit provided in an embodiment of the present invention.
Fig. 4 is the structural schematic diagram of mutual capacitance type touch screen provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the schematic diagram of sensing unit matrix arrangement provided in an embodiment of the present invention, as shown, a kind of embodiment
In, sensing unit according to 5*8 matrix arrangement, wherein the sensing unit of the 1st~4 row be the first sensing unit 120, every a line
The sensing unit that first sensing unit 120 forms the 12, the 5th~8 row of the first row unit is the second sensing unit 140, every a line
Second sensing unit 140 forms the second row unit 14, and transmitting terminal and the receiving end of sensing unit are that unit transmitting terminal connects with unit
Receiving end.First sensing unit 120 and the second sensing unit 140 are embedded in the liquid crystal pixel cells of mutual capacitance type touch screen,
Reduce the thickness of touch screen.In a kind of embodiment, the material of sensing module is indium oxide tin glass or indium tin oxide films.
In conjunction with Fig. 2, each first sensing unit 120 has the left and right ends for being located at the first sensing unit 120
Two first unit transmitting terminals 124, the first unit transmitting terminal 124 of the first adjacent sensing unit 120 are sequentially connected composition
A line unit 12, the second row unit 14 includes multiple second sensing units 140, in conjunction with Fig. 3, each second sensing unit 140
There are two the left and right ends that second unit transmitting terminal 144 is located at the second sensing unit 140, the second adjacent sensing units
140 second unit transmitting terminal 144 is sequentially connected the second row unit 14 of composition.The first row is located at 12 left end of the first row unit
The first sensing unit 120 left end first unit transmitting terminal 124 and fifth line be located at 14 left end of the second row unit the
The left end second unit transmitting terminal 144 of two sensing units 140 is connected, and is connected after the two parallel connection by common scanning line 200
To flexible circuit board 20；The right end first unit of the first sensing unit 120 positioned at 12 right end of the first row unit of the first row
The right end second unit of the second sensing unit 140 positioned at 14 right end of the second row unit of transmitting terminal 124 and fifth line is sent
End 144 is connected, and is connected to flexible circuit board 20 by common scanning line 200 after the two parallel connection.The first row list of second row
The first row unit 12 and the second row unit 14 of the 7th row, fourth line of second row unit 14 of member 12 and the 6th row, the third line
The first row unit 12 connect with the second row unit 14 of the 8th row by identical method.Two every trade units after parallel connection pass through
It can be scanned work simultaneously with scan line, shorten touch screen sweep time, improve scan efficiency, reserve sufficient pixel
Charging time.The common scanning line 200 of the first row unit 12 in parallel and the second row unit 14 is located at the two of mutual capacitance type touch screen
Hold bezel locations, the sweep speed that matrix two sides have common scanning line 200 to be conducive to improve sensing unit.
It is total by the common scanning line 200 of left and right two after each the first row unit 12 is in parallel with a second row unit 14
With flexible circuit board is connected to, i.e., the first row unit 12 and second row unit 14 can by common scanning line 200 simultaneously with
Touch chip interaction data works, and the number of leads for connecting the transmitting terminal of row unit is halved, due to connection row in parallel
The common scanning line 200 of unit left and right ends is respectively positioned on the both ends bezel locations of mutual capacitance type touch screen, therefore saves touch screen
Frame space, conducive to the requirement of narrow frame design.
Common reception line includes first lead 22 and the second lead 24, and the first sensing unit 120 also connects with first unit
Receiving end 126, first lead 22 will belong to different the first row units 12 by first unit receiving end 126 but belong to the of same row
One sensing unit 120 correspondence is cascaded, i.e. 4 the first sensing units 120 are together in series by a first lead 22, altogether
All first sensing units 120 of 4 the first row units 12 are together in series by 5 first leads 22；Second sensing unit 140 is also
With second unit receiving end 146, the second lead 24 by second unit receiving end 146 will belong to different second row units 14 but
The second sensing unit 140 correspondence for belonging to same row is cascaded, i.e. second lead 24 is by 4 the second sensing units
140 are together in series, and all second sensing units 140 of 4 the second row units 14 are together in series by 5 second leads 24 altogether.
In conjunction with Fig. 4, the unit receiving end 126 of the first sensing unit 120 connects touch chip 30 by flexible circuit board 20 and receives touching
The electric signal of chip 30 is controlled, while the unit transmitting terminal 124 of the first sensing unit 120 connects touch-control core by flexible circuit board 20
Piece 30 simultaneously sends electric signal to touch chip 30, completes the information exchange of the first sensing unit 120 and touch chip 30.Second passes
The unit receiving end 146 of sense unit 140 connects touch chip 30 by flexible circuit board 20 and receives the telecommunications of touch chip 30
Number, while the unit transmitting terminal 144 of the second sensing unit 140 by flexible circuit board 20 connects touch chip 30 and to touch-control core
Piece 30 sends electric signal, completes the information exchange of the second sensing unit 140 and touch chip 30.It is flexible in a kind of embodiment
The substrate of wiring board 20 is polyimides or polyester film.
Due to the first row unit 12 is parallel with one another with the second row unit 14 and by common scanning line 200 be commonly connected to it is soft
Property wiring board 20, on the one hand, the first sensing unit 120 works simultaneously with the second sensing unit 140, shorten touch screen scanning
Time improves scan efficiency, reserves sufficient pixel charging time；On the other hand, the number of leads of 10 transmitting terminal of sensing module
Halve, save the frame space of touch screen, is conducive to narrow frame design.
Mutual capacitance type touch screen further includes eyeglass panel 40, and eyeglass panel 40 is installed on the surface layer of mutual capacitance type touch screen,
In a kind of embodiment, the material of eyeglass panel 40 is tempered glass or polyethylene terephthalate.Eyeglass panel 40 is pacified
Outermost layer loaded on touch screen, hard, anti abrasive characteristic make it be used to protect sensing module 10 and other touch panel units,
And the color by designing different eyeglass panels 40 or shape can play the effect of decoration to touch screen.
Above disclosed is only several preferred embodiments of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention
Benefit requires made equivalent variations, still belongs to the scope covered by the invention.
Claims (8)
1. a kind of mutual capacitance type touch screen, which is characterized in that the touch screen includes flexible circuit board, touch chip and array row
Multiple sensing units of cloth, the sensing unit of every a line connect to form row unit, and the line number of the row unit is greater than 2
Even number N, the row unit of line n and the row unit of the n-th+N/2 row it is in parallel after be connected to by same scan line it is described
Flexible circuit board, n is positive integer and is not more than N/2, and the sensing unit of each column connects and is connected to the flexible circuitry
The sensing unit is electrically connected to the touch chip by the flexible circuit board by plate, and each sensing unit includes
Transmitting terminal and receiving end, the transmitting terminal of each sensing unit pass through the common scanning line of the sensing unit of every a line of connecting
The receiving end of connection, each sensing unit is connected by the common reception line of the sensing unit for each column of connecting, same
The sensing unit for belonging to the row unit parallel with one another in column is connected the receiving end by different leads.
2. mutual capacitance type touch screen according to claim 1, which is characterized in that row unit described in same group in parallel it is described
The quantity of common scanning line is two, for improving the scanning speed of the row unit.
3. mutual capacitance type touch screen according to claim 2, which is characterized in that the common scanning line is located at the touch
The both ends bezel locations of screen.
4. mutual capacitance type touch screen according to claim 1, which is characterized in that the sensing unit includes that the first sensing is single
Member and the second sensing unit, the row unit of line n is first sensing unit, the row unit of the n-th+N/2 row
It is second sensing unit, the lead of the receiving end of first sensing unit for same row of connecting passes through described the
Two sensing units and with first sensing unit without being electrically connected.
5. mutual capacitance type touch screen according to claim 1, which is characterized in that the sensing unit is embedded in the touch
In the liquid crystal pixel cells of screen.
6. mutual capacitance type touch screen according to claim 1, which is characterized in that the material of the sensing unit is indium oxide
Tin glass or indium tin oxide films.
7. mutual capacitance type touch screen according to claim 1, which is characterized in that the mutual capacitance type touch screen further includes mirror
Piece panel, the eyeglass panel are installed on the surface layer of the mutual capacitance type touch screen and for protecting and decorating the mutual capacitance type
Touch screen.
8. mutual capacitance type touch screen according to claim 7, which is characterized in that the material of the eyeglass panel is tempering glass
Glass or polyethylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749238.3A CN106095214B (en) | 2016-08-29 | 2016-08-29 | Mutual capacitance type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749238.3A CN106095214B (en) | 2016-08-29 | 2016-08-29 | Mutual capacitance type touch screen |
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| Publication Number | Publication Date |
|---|---|
| CN106095214A CN106095214A (en) | 2016-11-09 |
| CN106095214B true CN106095214B (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610749238.3A Active CN106095214B (en) | 2016-08-29 | 2016-08-29 | Mutual capacitance type touch screen |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919059B (en) * | 2017-11-09 | 2020-11-27 | 上海中航光电子有限公司 | Display substrate, display panel and display device |
| CN113031820B (en) * | 2021-03-25 | 2024-02-27 | 联想(北京)有限公司 | Touch screen, electronic equipment and information processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789347A (en) * | 2012-07-30 | 2012-11-21 | 潘兴修 | Wholly transparent capacitive touch screen |
| CN104238839A (en) * | 2013-06-24 | 2014-12-24 | 联咏科技股份有限公司 | Single-layer mutual-capacitance touch screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393502B (en) * | 2008-10-31 | 2012-03-07 | 敦泰科技有限公司 | Mutual capacitance touch screen and combined mutual capacitance touch screen |
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2016
- 2016-08-29 CN CN201610749238.3A patent/CN106095214B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789347A (en) * | 2012-07-30 | 2012-11-21 | 潘兴修 | Wholly transparent capacitive touch screen |
| CN104238839A (en) * | 2013-06-24 | 2014-12-24 | 联咏科技股份有限公司 | Single-layer mutual-capacitance touch screen |
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| Publication number | Publication date |
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| CN106095214A (en) | 2016-11-09 |
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