CN106775170A - A kind of flexible PCB and self-capacitance touch display screen - Google Patents
A kind of flexible PCB and self-capacitance touch display screen Download PDFInfo
- Publication number
- CN106775170A CN106775170A CN201710037853.6A CN201710037853A CN106775170A CN 106775170 A CN106775170 A CN 106775170A CN 201710037853 A CN201710037853 A CN 201710037853A CN 106775170 A CN106775170 A CN 106775170A
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- Prior art keywords
- flexible pcb
- display screen
- touch
- self
- touch electrode
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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
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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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of flexible PCB and self-capacitance touch display screen, number of leads of the autonomous channel number of the flexible circuit intralamellar part less than the touch electrode for accessing, so only need to connect up small numbers of autonomous channel, it is oversized so as to solve the problems, such as existing flexible PCB.
Description
Technical field
The present invention relates to touch display screen technical field, and in particular to a kind of flexible PCB and self-capacitance touch display
Screen.
Background technology
At present, the touch display screen that in the market is used includes that two kinds, i.e. mutual capacitance type touch display screen and self-capacitance are touched
Touch display screen.Fig. 1 show the structural representation of self-capacitance touch display screen of the prior art.It can be seen that
The self-capacitance touch display screen 100 includes：Top glass substrate 101, lower glass substrate 102, liquid crystal display layer 103.Wherein, should
Liquid crystal display layer 103 is distributed between top glass substrate 101 and lower glass substrate 102, the public electrode of the liquid crystal display layer 103
104 are distributed between top glass substrate 101 and liquid crystal display layer 103, and public electrode 104 is divided into the son of multiple matrix arrangements
Electrode, forms touch electrode 105.Whole touch electrodes 105 pass through anisotropic by a lead 106 independent of each other one by one
Conducting film 400 is realized electrically connecting with flexible PCB, then connects external touch driving chip via flexible PCB (FPC) 200
300.During touch detection, judge to touch thing by the electric capacity formed between detecting touch electrode 105 and touching object
Part, and the capacitance size measured by adjacent touch electrode 105 carried out weight calculation and obtains contact position.In this case, it is soft
Property circuit board 200 in autonomous channel number need to match with the number of lead 106.
With the development of science and technology, people to touch display device, the wearable display devices of such as AMOLED, touch-sensitive
Degree requires more and more higher, and this is accomplished by setting more touch electrodes 105, now, layout is accomplished by flexible PCB 200
More autonomous channels match with the number of touch electrode 105.However, the flexible PCB that gradually increases of this size and people
Occur in that contradiction between the realizing display device miniaturization target pursued, it is impossible to meet the market demand.
The content of the invention
In view of this, a kind of flexible PCB and self-capacitance touch display screen are the embodiment of the invention provides, is solved
The oversized problem of existing flexible PCB.
The invention provides a kind of flexible PCB, for self-capacitance touch display screen, flexible circuit intralamellar part it is only
Number of leads of the vertical number of active lanes less than the touch electrode for accessing.
In one embodiment, the lead of the touch electrode of access forms autonomous channel in flexible PCB internal short-circuit.
Further, every two or three or four leads of touch electrode form one in flexible PCB internal short-circuit
Bar autonomous channel.
Further, the number of the lead of the touch electrode being electrically short-circuited to each other is identical or different.
Further, the lead of the touch electrode being electrically short-circuited to each other is adjacent.
In another embodiment, the flexible PCB, including gating module, one end of gating module connects at least one
The lead of touch electrode, the other end draws an autonomous channel, and gating module is used for the lead of the touch electrode that will be attached thereto
The autonomous channel drawn with it successively turns on.
Further, the number of leads of the touch electrode that different gating modules are connected is identical or different.
Further, gating module is embodied as switch element.
Present invention also offers a kind of self-capacitance touch display screen, including flexible PCB as described above.
A kind of flexible PCB provided in an embodiment of the present invention and self-capacitance touch display screen, flexible circuit intralamellar part
Autonomous channel number is so only needed to a small number of autonomous channels in flexible PCB less than the number of leads of the touch electrode for accessing
Internal wiring, reduces the size of flexible PCB, accords with the demands of the market.
Brief description of the drawings
Fig. 1 show the structural representation of self-capacitance touch display screen of the prior art.
Fig. 2 show the structural representation of the self-capacitance touch display screen flexible PCB of one embodiment of the invention offer
Figure.
The structure that Fig. 3 show the self-capacitance touch display screen flexible PCB of another embodiment of the present invention offer is shown
It is intended to.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Fig. 2 show the structural representation of the self-capacitance touch display screen flexible PCB of one embodiment of the invention offer
Figure.It can be seen that compared with the self-capacitance display screen flexible PCB of the prior art shown in Fig. 1, according to
Autonomous channel number in the flexible PCB 200 of the self-capacitance display screen of present embodiment tails off so that flexible PCB 200
Volume diminish.
Below as a example by including 6 self-capacitance touch display screens of the touch electrode of array arrangement 105, to therein soft
The concrete structure of property circuit board 200 is illustrated.
As shown in Fig. 2 flexible PCB 200 includes the first connection end 201, for side connection by all touch electrodes
105 leads 106 drawn, opposite side is formed and the passage between the second connection end 202；Second connection end 202, connects for side
Driving chip 300, the passage between opposite side connection and the first connection end 201 are touched in contact.Wherein, the first connection end 201 includes 6
Individual first binding post 2010, corresponds to 6 leads of touch electrode 105 106 respectively, and 6 leads 106 are by the first terminals
Son 2010 is short-circuit two-by-two in wiring region 203, forms 3 autonomous channels 2030, and 3 autonomous channels 2030 are by after rational deployment
3 the second binding posts 2020 are formed in the second connection end 202.This 3 the second binding posts 2020 are used to connect touch driving
Chip 300.
In one embodiment, lead 106 short-circuit two-by-two is adjacent.So be conducive to connection, simplify wiring difficulty,
Further reduce the size of flexible PCB 200.
The operation principle of the self-capacitance display screen flexible PCB 200 according to present embodiment includes：Touch scanning
Chip 300 sends scanning signal in the interval time section that display screen does not carry out that image shows, the scanning signal sequentially passes through the
Two binding posts 2020, the first binding post 2010, lead 106 are sent to touch electrode 105, and receive in reverse order tactile
The touch detection signal of the feedback of electrode 105 is touched, driving chip 300 is touched and touch electrode 105 is determined according to the touch detection signal
The middle touch electrode 105 that signal intensity occurs, to determine the coordinate of touch location.
Self-capacitance display screen flexible PCB 200 according to present embodiment, wiring region 203 pairs by the first wiring
The lead 106 that terminal 2010 is accessed carries out short circuit treatment two-by-two, then the autonomous channel after short circuit treatment is connected up, and reduces
The autonomous channel number connected up in flexible PCB, so as to reduce the size of flexible PCB.
It will be understood by those skilled in the art that the number of the touch electrode 105 be given in the present embodiment is exemplary,
It is not limited thereto.Additionally, for lead 106 the short-circuit structure of wiring region 203, or per three lead-in wires 106 each other
Short circuit, or every four leads 106 are electrically short-circuited to each other, and the present invention refuses the number of lead 106 of short circuit to limit.
Although it is considered that the size of flexible PCB can be reduced using the self-capacitance touch display screen shown in Fig. 2, so
And, this effect is realized by reducing autonomous channel number, and the reduction of autonomous channel number can cause the touch essence of display screen
Degree is reduced, and this is in some cases the required precision that cannot meet display device.
In view of this, still by taking 6 touch electrodes 105 as an example, the invention provides another self-capacitance touch display screen
With the structure of flexible PCB 210, as shown in Figure 3.It can be seen that the flexible PCB 210 includes the first connection end
211,6 lead terminals 2110 of the first connection end 211 are divided into 3 groups, and all binding posts of first connection end 211 are used for
Connected one to one with the lead 106 drawn by all touch electrodes 105；Wiring region 212, including 3 gating modules 2120, often
One end of individual gating module 2120 connects one group of lead-out wire of binding post 2110, and the other end draws an autonomous channel 2121；
And, the second connection end 213 that the end of all autonomous channels 2121 is formed, the binding post 2130 of second connection end 213 is used
Driving chip 300 is touched in connection.
The operation principle of the self-capacitance display screen flexible PCB 210 according to present embodiment includes：Touch scanning
Chip 300 is not carried out in the interval time section that image shows in display screen, scanning signal is sent, when gating module 2120 is by this section
Between interval be divided into 3 time slots, the quantity of the time slot can artificially be set, gating module 2120 by predefined procedure at each
Gap gates in this group of lead terminal being attached thereto successively.
In one embodiment, gating module 2120 is switch element.
Self-capacitance touch display screen flexible PCB according to present embodiment, is reduced using gating module 2120
The quantity of autonomous channel, reduces the size of flexible PCB 210.At the same time, self-capacitance according to present embodiment is touched
Display screen flexible PCB is touched, in the touch-sensing stage, the touch electrode 105 in every group is strobed and receives scanning letter successively
Number, all touch electrodes 105 in each interval time section that image shows in every group of traversal are not carried out in display screen, it is and existing
The touch-sensing precision of 6 self-capacitance display screens of touch electrode is identical in technology.
Those skilled in the art, it will be understood that number, the gating module of the touch electrode 105 be given in the present embodiment
2120 number is all exemplary, and the present invention is not limited.
In one embodiment, the attachable binding post number of each gating module 2120 is identical or different.It is actual
Using when, the lead terminal number that gating module 2120 is connected can artificially be set, it is only necessary at the same set it is matching
Number of time slot.So so that the self-capacitance display screen flexible PCB 210 according to present embodiment can meet difference
The display screen requirement of precision, realizes compatible.
Present invention also offers a kind of self-capacitance touch display screen, including above-mentioned flexible PCB.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent for being made etc. should be included within the scope of the present invention.
Claims (9)
1. a kind of flexible PCB, for self-capacitance touch display screen, it is characterised in that the independence of flexible circuit intralamellar part is led to
Number of leads of the road number less than the touch electrode for accessing.
2. flexible PCB as claimed in claim 1, it is characterised in that the lead of the touch electrode of access is in flexible PCB
Internal short-circuit, forms autonomous channel.
3. flexible PCB as claimed in claim 2, it is characterised in that per two or three or four leads of touch electrode
In flexible PCB internal short-circuit, an autonomous channel is formed.
4. flexible PCB as claimed in claim 2, it is characterised in that the number phase of the lead of the touch electrode being electrically short-circuited to each other
It is same or different.
5. flexible PCB as claimed in claim 2, it is characterised in that the lead of the touch electrode being electrically short-circuited to each other is adjacent.
6. flexible PCB as claimed in claim 2, it is characterised in that including gating module, one end of gating module connects
The lead of at least one touch electrode, the other end draws an autonomous channel, and gating module is used for the touch electricity that will be attached thereto
The autonomous channel that the lead of pole is drawn with it successively turns on.
7. flexible PCB as claimed in claim 6, it is characterised in that the touch electrode that different gating modules are connected draws
Line number mesh is identical or different.
8. flexible PCB as claimed in claim 6, it is characterised in that the gating module is embodied as switch element.
9. a kind of self-capacitance touch display screen, it is characterised in that including any described flexible circuit in claim 1-8
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037853.6A CN106775170B (en) | 2017-01-18 | 2017-01-18 | Flexible circuit board and self-capacitance touch display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037853.6A CN106775170B (en) | 2017-01-18 | 2017-01-18 | Flexible circuit board and self-capacitance touch display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106775170A true CN106775170A (en) | 2017-05-31 |
| CN106775170B CN106775170B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710037853.6A Active CN106775170B (en) | 2017-01-18 | 2017-01-18 | Flexible circuit board and self-capacitance touch display screen |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202838284U (en) * | 2012-08-22 | 2013-03-27 | 深圳市汇顶科技股份有限公司 | Single layer capacitive two-dimensional touch sensor |
| KR20130069089A (en) * | 2011-12-16 | 2013-06-26 | 엘지디스플레이 주식회사 | Liquid crystal display device with interred touch screen and method for driving the same |
| CN103235459A (en) * | 2013-04-27 | 2013-08-07 | 合肥京东方光电科技有限公司 | Display substrate and lead repairing method of driver ICs (Integrated Circuits) |
| CN204360353U (en) * | 2015-01-26 | 2015-05-27 | 京东方科技集团股份有限公司 | Buffer cell, touch drive circuit and display device |
| US20150193065A1 (en) * | 2014-01-08 | 2015-07-09 | E Ink Holdings Inc. | Touch panel module and touch display device having the same |
| CN105493015A (en) * | 2015-02-06 | 2016-04-13 | 深圳市柔宇科技有限公司 | Combination of capacitive touch screen and flexible printed circuit board |
-
2017
- 2017-01-18 CN CN201710037853.6A patent/CN106775170B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130069089A (en) * | 2011-12-16 | 2013-06-26 | 엘지디스플레이 주식회사 | Liquid crystal display device with interred touch screen and method for driving the same |
| CN202838284U (en) * | 2012-08-22 | 2013-03-27 | 深圳市汇顶科技股份有限公司 | Single layer capacitive two-dimensional touch sensor |
| CN103235459A (en) * | 2013-04-27 | 2013-08-07 | 合肥京东方光电科技有限公司 | Display substrate and lead repairing method of driver ICs (Integrated Circuits) |
| US20150193065A1 (en) * | 2014-01-08 | 2015-07-09 | E Ink Holdings Inc. | Touch panel module and touch display device having the same |
| CN204360353U (en) * | 2015-01-26 | 2015-05-27 | 京东方科技集团股份有限公司 | Buffer cell, touch drive circuit and display device |
| CN105493015A (en) * | 2015-02-06 | 2016-04-13 | 深圳市柔宇科技有限公司 | Combination of capacitive touch screen and flexible printed circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106775170B (en) | 2020-06-09 |
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