CN110275644A - Touch screen and terminal device - Google Patents

Touch screen and terminal device Download PDF

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Publication number
CN110275644A
CN110275644A CN201910492632.7A CN201910492632A CN110275644A CN 110275644 A CN110275644 A CN 110275644A CN 201910492632 A CN201910492632 A CN 201910492632A CN 110275644 A CN110275644 A CN 110275644A
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China
Prior art keywords
pipe
receiving
signal transmitting
touch screen
transmitting
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CN201910492632.7A
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CN110275644B (en
Inventor
吴明强
王武军
林小峰
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Qingdao Hisense Commercial Display Co Ltd
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Qingdao Hisense Commercial Display Co Ltd
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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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen

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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 present invention provides a kind of touch screen and terminal devices, are related to touch control technical field, can be improved the uniformity coefficient of light in the touch-responsive areas of touch screen, effectively support thin written calculation method, while reducing the production cost of touch screen.Wherein, the touch screen includes: at least one set of frame, every group of frame includes two frames being oppositely arranged, signal transmitting and receiving is provided on frame to pipe, signal transmitting and receiving includes transmitting terminal and receiving end to pipe, transmitting terminal and receiving end are separately positioned on two opposite frames of same group of frame, and receiving end is used to receive the signal of transmitting terminal transmitting；Signal transmitting and receiving meets the distribution mode of pipe on the touch screen: so that two groups of adjacent signal transmitting and receivings are less than or equal to first threshold to the difference between the maxima and minima of the adjacent sidelight linear distance pipe.The touch screen is mainly set in the terminal device for being realized touch control to pipe using signal transmitting and receiving.

Description

Touch screen and terminal device
Technical field
The present invention relates to touch control technical fields, more particularly, to a kind of touch screen and terminal device.
Background technique
With the continuous development of multimedia technology, touch screen is as a kind of novel input equipment by the extensive joyous of people Meet, user can realize operation to equipment by touching to click on touch screen, touch screen for user provide it is more simple just Prompt man-machine interaction mode.
Wherein, infrared touch screen is continually scanned on horizontal, vertical direction respectively by installing infrared tube in screen surrounding And detect, coordinate setting is carried out using the working method of touching object barrier infrared light, usually before display One circuit plate framework of installation, transmitting terminal and corresponding receiving end in the surrounding installation infrared tube of circuit plate framework, leads to Oversampling circuit drives the transmitting terminal of infrared tube to issue infrared light, and corresponding receiving end receives infrared light.User utilizes touch When object touches touch screen, touching object can block the infrared light in the vertical and horizontal direction by the position, and the change of optical signal is drawn The electric signal for playing the photodetection circuit output variation of the receiving end of connection infrared tube, can be with by handling electric signal Touch location of the touching object in touch screen is positioned, the opaque touching object of any pair of infrared light can hinder Every the propagation of infrared light, to realize that touch-control positions.
Existing infrared touch screen is by the way of the equidistant tight distribution of infrared tube, but this touch screen is due to red It is unreasonable to pipe layout outside that light net mid-infrared light line is caused to be unevenly distributed, multiple large area light net cavities are formed, when light net is empty When hole is excessive, if touching object falls into the white space in light net cavity because diameter is smaller, can not have to touching object Effect positioning, if it is desired to reduce light net cyst areas to realize thin pen high-precision, need to be distributed more equidistant tight distributions Infrared tube, hardware cost is higher and the stability of touch screen is difficult to ensure, influences user experience.
Summary of the invention
In view of this, can be improved the touching of touch screen the purpose of the present invention is to provide a kind of touch screen and terminal device The uniformity coefficient of light in response region is touched, effectively supports thin written calculation method, while reducing the production cost of touch screen.
In a first aspect, the embodiment of the invention provides a kind of touch screen, including at least one set of frame, wherein every group of frame packet Two frames being oppositely arranged are included, signal transmitting and receiving are provided on frame to pipe, signal transmitting and receiving includes transmitting terminal and receiving end to pipe, Transmitting terminal and receiving end are separately positioned on two opposite frames of same group of frame, and wherein receiving end is for receiving transmitting terminal hair The signal penetrated；Signal transmitting and receiving meets the distribution mode of pipe on touch screen: so that two groups of adjacent signal transmitting and receivings are between the neighbour pipe Difference between the maxima and minima of sidelight linear distance is less than or equal to first threshold；Wherein, adjacent sidelight linear distance are as follows: phase For two groups of adjacent signal transmitting and receivings in pipe, the first signal transmitting and receiving receives and dispatches the maximum angle light to pipe to the deviation second signal that pipe emits The first signal of deviation that pipe emits is received in first intersection point and the second signal transmitting-receiving at the touch-responsive areas edge of line and touch screen Send out the length to line segment between the maximum angle light of pipe and second intersection point at touch-responsive areas edge.
Second aspect, the embodiment of the invention provides a kind of touch screens, including at least one set of frame, wherein every group of frame packet Two frames being oppositely arranged are included, signal transmitting and receiving are provided on frame to pipe, signal transmitting and receiving includes transmitting terminal and receiving end to pipe, Transmitting terminal and receiving end are separately positioned on two opposite frames of same group of frame, and wherein receiving end is for receiving transmitting terminal hair The signal penetrated；On the direction that frame extends to two sides, frame includes being located in the middle first area, being located at first area side Second area and third region positioned at the first area other side；First area includes the signal transmitting and receiving of x group equidistantly distributed To pipe；Second area and third region respectively include the signal transmitting and receiving of the non-equidistantly distributed of y group to pipe；Second area or third area The length in domain is equal to L, wherein H*tan θ-D0≤ L < H*tan θ；Wherein, D0Indicate that two adjacent groups signal is received in first area Hair is between the spacing pipe；Tan θ indicates signal transmitting and receiving to the tangent value of the maximum emission angle of the transmitting terminal of pipe；H indicates signal transmitting and receiving To the vertical range between the transmitting terminal and receiving end of pipe.
The third aspect, the embodiment of the invention provides a kind of terminal devices, wherein including first aspect and second aspect institute The touch screen stated.
The embodiment of the invention provides a kind of touch screen and terminal devices, wherein touch screen includes at least one set of frame, often Group frame includes two frames being oppositely arranged, and signal transmitting and receiving is provided on frame to pipe, signal transmitting and receiving includes transmitting terminal to pipe And receiving end, transmitting terminal and receiving end are separately positioned on two opposite frames of same group of frame, receiving end is for receiving hair Penetrate the signal of end transmitting；Signal transmitting and receiving meets the distribution mode of pipe on touch screen: so that two groups of adjacent signal transmitting and receivings are to pipe Between adjacent sidelight linear distance maxima and minima between difference be less than or equal to first threshold；Wherein, adjacent sidelight line-spacing From are as follows: for two groups of adjacent signal transmitting and receivings in pipe, the first signal transmitting and receiving receives and dispatches to pipe most the deviation second signal that pipe emits The deviation that first intersection point and the second signal transmitting-receiving at the touch-responsive areas edge of high angle scattered light and touch screen emit pipe the Length of one signal transmitting and receiving to line segment between the maximum angle light of pipe and second intersection point at touch-responsive areas edge.Due to phase Adjacent signal transmitting and receiving directly affects the light net cyst areas size of touch-responsive areas between the adjacent sidelight linear distance pipe, therefore passes through Reasonable layout signal transmitting and receiving is to pipe, so that two groups of adjacent signal transmitting and receivings are between the maximum value of the adjacent sidelight linear distance pipe and minimum Difference between value is less than or equal to first threshold, i.e., the two of arbitrary neighborhood group signal transmitting and receiving is between the adjacent sidelight linear distance pipe When difference is sufficiently small or equal, the uniformity coefficient of light in the touch-responsive areas of touch screen can be improved, effectively support is thin Style of writing control algorithm, further, since in the prior art, being taken using the touch accuracy of the touch screen of equidistant tight distribution infrared tube Certainly in the maximum value of the light net cyst areas of touch-responsive areas, therefore want to reduce the light net cyst areas of touch-responsive areas Maximum value to improve touch accuracy, need to be distributed the infrared tube of more equidistant tight distributions, and the embodiment of the present invention In, the uniformity in light net cavity is improved to pipe by reasonable layout signal transmitting and receiving, when realizing same touch accuracy, the present invention is real Applying example can be used less signal transmitting and receiving to pipe, therefore reduce the production cost of touch screen.
Other features and advantages of the present invention will illustrate in the following description, alternatively, Partial Feature and advantage can be with Deduce perhaps beyond all doubt determination from specification or by implementing above-mentioned technology of the invention it can be learnt that.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment is cited below particularly, and match The attached drawing is closed, is described in detail below.
Detailed description of the invention
It, below will be to specific reality in order to illustrate more clearly of the specific embodiment of the invention or the technical solution of the prior art Apply mode or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, be described below in it is attached Figure is some embodiments of the present invention, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is that a kind of structure of the rectangular touch screen of equidistant tight distribution infrared tube provided in an embodiment of the present invention is shown It is intended to；
Transverse direction frame corresponding two scanning directions when Fig. 2 is a kind of 1 pair of 2 scanning mode provided in an embodiment of the present invention Schematic diagram；
Vertical frame corresponding two scanning directions when Fig. 3 is a kind of 1 pair of 2 scanning mode provided in an embodiment of the present invention Schematic diagram；
Fig. 4 is the structure of the rectangular touch screen of another equidistant tight distribution infrared tube provided in an embodiment of the present invention Schematic diagram；
Fig. 5 is that a kind of part of rectangular touch screen of equidistant tight distribution infrared tube provided in an embodiment of the present invention is thin Save schematic diagram；
Fig. 6 is a kind of structural schematic diagram of touch screen provided in an embodiment of the present invention；
Fig. 7 is the structure of the rectangular touch screen of the third equidistant tight distribution infrared tube provided in an embodiment of the present invention Schematic diagram；
Fig. 8 is the structural schematic diagram of another touch screen provided in an embodiment of the present invention；
Fig. 9 is a kind of light net schematic diagram of the touch-responsive areas of touch screen provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another touch screen provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another touch screen provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention Technical solution carry out clear, complete description, it is clear that described embodiments are some of the embodiments of the present invention, rather than Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall within the protection scope of the present invention.
In technical field of touch control, touch control is mainly realized by touch screen, wherein touch screen includes to be provided with signal Receive and dispatch the frame that is oppositely arranged at least one set of pipe, signal transmitting and receiving includes transmitting terminal and receiving end to pipe, opposite at one group Mode of the setting signal transmitting-receiving to pipe on frame are as follows: multiple transmitting terminals are set on a line frame, are arranged on another frame Multiple receiving ends, transmitting terminal are used to receive the signal of transmitting terminal transmitting for emitting signal, receiving end, and signal transmitting and receiving includes to pipe But it is not limited to infrared tube, infrared tube includes transmitting terminal and receiving end, and for emitting infrared light, receiving end is used for transmitting terminal The infrared light for receiving transmitting terminal transmitting, for purposes of illustration only, the embodiment of the present invention is described in detail by taking infrared tube as an example.
In general, touch screen includes two groups of opposite frames, i.e. one group of transverse direction frame and one group of vertical frame, shown in Fig. 1 A kind of equidistantly distributed infrared tube rectangular touch screen for, which includes that one group of transverse direction frame and one group are perpendicular To frame, lateral frame and vertical frame respectively include two opposite frames, i.e. transmitting side and reception side, opposite at the two Frame on be symmetrically arranged transmitting terminal and the receiving end of infrared tube, i.e., be provided with transmitting terminal in transmitting side, receive side On be provided with receiving end, since transmitting terminal can emit infrared light within the scope of certain angle, as shown in Figure 1, one group is infrared The light of the transmitting terminal transmitting of pipe can not only be received by the receiving end of current infrared tube, can also be in and work as by remaining The receiving end of infrared tube within the scope of the launch angle of preceding infrared tube transmitting terminal is received, and the transmitting terminal of infrared tube is being sent out When penetrating light, only receiving end, which receives, could form effective sunlight, for purposes of illustration only, following light refers both to effective sunlight, For a particular transmission end, corresponding N number of receiving end forms N light, every light possesses different angles, this N item light Each angle of line, all referred to as a scanning angle corresponds to N number of scanning direction in the scanning mode of 1 pair of N (N >=1) altogether, Each scanning direction is made of one group of parallel rays with slope, and transverse direction frame is corresponding when being illustrated in figure 21 pair of 2 scanning mode Two scanning directions, Fig. 3 show corresponding two scanning directions of vertical frame when 1 pair of 2 scanning mode.
Based on above-mentioned rectangular touch screen, touch-control principle is illustrated: as shown in figure 4, for ease of understanding, with lateral frame For be described in detail, enable in the rectangular touch screen transmitting terminal of lateral frame correspond to multiple receiving ends, the hair of vertical frame It penetrates end and only corresponds to the corresponding receiving end of current transmitting terminal, when issuing infrared light by the transmitting terminal of circuit drives infrared tube, When receiving end receives infrared light, the light net as shown in Figure 4 as composed by infrared light will form, in light net, effectively touch It touches region and is known as touch-responsive areas, is i.e. is formed in Fig. 4 with first group of infrared tube on the left of frame lateral in rectangular touch screen First group of infrared tube of light and vertical edges frame bottom forms the intersection point O of light1For starting point, on the right side of lateral frame last The intersection point O for the light that the light and last group of infrared tube of vertical edges arch that group infrared tube is formed are formed2For terminal, edge The rectangle that horizontal vertical direction is formed is known as touch-responsive areas.
When using touch screen, touching object falls into touch-responsive areas the vertical and horizontal direction that can be blocked by the position Infrared light, the telecommunications that the change of optical signal causes the photodetection circuit output for the receiving end for being connected with infrared tube to change Number, by the way that electric signal is handled and can be positioned to position of the touching object in touch screen using touch-control algorithm.
But in light net, the minimum polygon white space that any three or three or more ray intersections are formed is known as Light net cavity, when light net cyst areas is excessive, if touching object falls completely within the blank area in light net cavity because diameter is smaller Domain cannot achieve positioning since touching object does not shelter from any light on touch-control algorithm, in practical touch experience just It will appear and click phenomena such as reactionless, scribing line is broken, influence user experience.
The distribution of light net cavity and light is closely related, and existing touch screen is infrared using equidistantly distributed as shown in Figure 4 Touch control is realized to the mode of pipe, will form the cavity of the light net as shown in region 1, region 2 and region 3, light point at region 1 Cloth is more uniform, and light net cyst areas is smaller；Region 2 is located at the lateral medial axis position of touch-responsive areas, a plurality of light Regular intersect at of line is fixed a bit, is forming continuous multiple large area light nets cavities between points；Region 3, which is located at, to be touched At the bezel locations of response region, also comprising multiple large area light net cavities；Light net cyst areas in touch-responsive areas is big Small to be unevenly distributed, especially in region 2 and region 3, light net cyst areas is larger, and touching object is easy to fall into white space In cause to touch failure, therefore certain measure need to be taken to reduce the light net cyst areas maximum value of touch-responsive areas, mentioned High touch accuracy, existing touch screen frequently with the infrared tube for increasing equidistant tight distribution mode, it is infrared right by reducing Distance between pipe reduces the size in light net cavity, but increases infrared tube and not only will increase production cost, and right The stability of touch screen will also result in larger impact, therefore need to find solution in addition to reduce the area in light net cavity.
The touch screen of existing equidistantly distributed infrared tube as shown in Figure 4 can see, the light net of touch-responsive areas Cyst areas is unevenly distributed, especially two side positions of the vertical central axis of region 2 and region 3 far from touch-responsive areas Place, light net cyst areas are gradually increased by vertical central axial two sides, know the reason of causing this phenomenon by analysis are as follows: with For 1 pair of 7 scanning mode used in Fig. 4, it can be seen that the 4-17 group infrared tube positioned at the intermediate region of lateral frame The angle that transmitting terminal emits light to the left and to the right can achieve maximum emission angle, and corresponding region is formed in region 2 and region 3 Light net cavity it is more uniform, but the transmitting terminal for being located at the 1-3 group infrared tube on the left of lateral frame emits to the right light Angle can achieve maximum emission angle, but maximum emission angle is but not achieved to the left, as shown in figure 5, maximum emission angle be θ, θ > θ1>θ2> 0, as the angle that the 3rd, the 2nd and the 1st group of infrared tube emits light to the left is gradually reduced, in region 2 and region 3 The light net cyst areas that corresponding region is formed is gradually increased, similarly, 18-20 group infrared tube on the right side of lateral frame with To the right emit light angle be gradually reduced, the light net cyst areas formed in 3 corresponding region of region 2 and region gradually increases Greatly, principle is consistent with the principle of 1-3 group infrared tube, and details are not described herein.
And it is further, the adjacent sidelight linear distance the adjacent infrared tube in Fig. 4 can be calculated, adjacent sidelight line Distance are as follows: in two groups of adjacent infrared tubes, the maximum angle light of the second infrared tube of deviation of the first infrared tube transmitting The first infrared tube of deviation emitted with first intersection point at the touch-responsive areas edge of touch screen and the second infrared tube is most The length of line segment between high angle scattered light and second intersection point at touch-responsive areas edge, i.e., in Fig. 5 | A1B1|、|A2B2|、 |A3B3|、|A4B4|、|A5B5|……|A19B19| it is calculated, enabling the height of vertical frame is H, the emission maximum of infrared tube Angle is θ, and the distance of the lateral frame of touch-responsive areas distance is h, and the distance between adjacent infrared tube is D, it is known that:
|A1B1|=| O1A1-O1B1|；
It is apparent from according to the property of similar triangles,
It is found that
Similarly,
According to above-mentioned calculated result it is found that lateral frame is upper in touch screen emits light to two sides in intermediate region Angle can achieve between the infrared tube of maximum emission angle that adjacent sidelight linear distance is equal, positioned at central area two sides to remote The adjacent sidelight linear distance between the infrared tube of maximum emission angle is not achieved in angle from central area transmitting light The heart, value is bigger, and two sides are axisymmetricly distributed, and adjacent sidelight linear distance is bigger, far from perpendicular in the region of Fig. 42 and region 3 The light net cavity formed to the two side areas of central axis is also bigger, such as the two sides in region 2 and region 3 far from vertical central axis Light net cyst areas is significantly greater than the area close to the light net cavity of vertical central axis, and further away from vertical center in two side areas The light net cyst areas of axis, formation is bigger.
According to the analysis result to existing touch screen it is found that the size of adjacent sidelight linear distance can directly affect touch-responsive area The light net cyst areas size in domain can control light net cyst areas size, therefore by controlling the size of adjacent sidelight linear distance Light net cyst areas can be reduced by controlling the size of adjacent sidelight linear distance come the infrared tube on reasonable layout touch screen Maximum value makes the light net cyst areas of touch-responsive areas tend to homogenize.
In 1 pair 7 of scanning mode, using equidistantly distributed infrared tube distribution mode when, the 4th group of side is red It can achieve emission maximum angle when emitting light to two sides to the fourth from the last group infrared tube of pipe and the other side outside, that is, scheme Third from the bottom group of infrared tube of the 4th and the 17th group of infrared tube in 4, the third group infrared tube of side and the other side is to leaning on It is just reached not when can achieve emission maximum angle when nearly center side transmitting light, but emitting light to separate center side To emission maximum angle, i.e. the 3rd and the 18th group of infrared tube in Fig. 4, so from the third group of side to the inverse of the other side When intermediate region between third group infrared tube is by the way of equidistantly distributed infrared tube, each adjacent sidelight in the region Linear light linear distance is equal, and the light net cyst areas of formation is also more uniform, and the region of the intermediate region two sides is due to adjacent sidelight Linear distance is not equal and is all larger than the adjacent sidelight linear distance of intermediate region, and the light net cyst areas of formation is also big compared with intermediate region, can Adjacent sidelight linear distance size is controlled with the distance between the infrared tube of this two side areas of appropriate adjustment, to control light net cavity Size.
Therefore, in the scanning mode of 1 couple of N, the light that is emitted to two sides due to transmitting terminal according to transmitting intermediate rays It is symmetrical, so N is odd number, in the scanning mode, inverse (N-1) from (N-1)/2 group of side to the other side/ The light net cavity that region between 2 groups of infrared tubes is formed using equidistantly distributed mode is more uniform, and first group of side Last group of region and the other side between to (N-1)/2 group is used to the region between (N-1)/2 reciprocal group Existing equidistantly distributed mode can form the non-uniform light net cavity of size in light net corresponding region, can be to the two The infrared tube in region re-starts distribution, so that the distribution of light net cavity tends to homogenize.
Analysis based on problem present in the above-mentioned touch screen to existing equidistantly distributed infrared tube is as a result, the present invention is real It applies example and provides a kind of touch screen, as shown in fig. 6, the touch screen includes at least one set of frame, wherein every group of frame includes opposite Two frames being arranged are provided with signal transmitting and receiving to pipe on frame, and signal transmitting and receiving includes transmitting terminal and receiving end, transmitting terminal to pipe It is separately positioned on opposite two frames of same group of frame with receiving end, wherein receiving end is used to receive the letter of transmitting terminal transmitting Number；Signal transmitting and receiving meets the distribution mode of pipe on touch screen: two groups of adjacent signal transmitting and receivings are between the adjacent sidelight linear distance pipe Maxima and minima between difference be less than or equal to first threshold.
Wherein, adjacent sidelight linear distance are as follows: in pipe, the first signal transmitting and receiving emits pipe inclined two groups of adjacent signal transmitting and receivings To second signal transmitting-receiving to first intersection point at the touch-responsive areas edge of the maximum angle light and touch screen of pipe and the second letter Second friendship of the first signal transmitting and receiving of deviation that number transmitting-receiving emit pipe to the maximum angle light and touch-responsive areas edge of pipe The length of line segment between point.
Due in the actual production process, inevitably with the presence of error, so guaranteeing adjacent signals on touch screen Transmitting-receiving is less than or equal to first threshold to the difference between the maxima and minima in the adjacent sidelight linear distance pipe, the One threshold value is admissible worst error value, and first threshold is smaller, and the touch-control effect of touch screen is better, in the ideal situation, the One threshold value is 0, i.e., two groups of signal transmitting and receivings of arbitrary neighborhood are equal the adjacent sidelight linear distance pipe in touch screen.
Illustratively, Fig. 6 gives a kind of touch screen, wherein the touch screen includes two frames L1, L2, and L1 and L2 are M group signal transmitting and receiving is distributed on the transverse direction frame to pipe for one group of transverse direction frame being oppositely arranged, and wherein adjacent signals transmitting-receiving is to pipe Between adjacent sidelight linear distance be less than or equal to first threshold, certain touch screen further includes two vertical frames, with common group of L1, L2 It is rectangular, it is only illustrated by taking two lateral frame L1, L2 as an example in embodiments of the present invention.
The touch screen includes touch-responsive areas, i.e. is formed with first group of signal transmitting and receiving on the left of lateral frame to pipe in Fig. 6 Light and first group of signal transmitting and receiving of vertical edges frame bottom to pipe formed light intersection point O1For starting point, on the right side of lateral frame The light that the light and last group of signal transmitting and receiving of vertical edges arch that last group of signal transmitting and receiving forms pipe form pipe Intersection point O2For terminal, the rectangle formed along horizontal vertical direction is known as touch-responsive areas.
In the touch screen, by first group of left side signal transmitting and receiving to pipe and second group of signal transmitting and receiving to pipe for, adjacent sidelight Maximum angle light A and touch screen of the second group of signal transmitting and receiving of deviation that linear distance, which is first group of signal transmitting and receiving, emits pipe to pipe Touch-responsive areas edge the first intersection point A1First group of signal transmitting and receiving pair of deviation that pipe is emitted with second group of signal transmitting and receiving The maximum angle light B of pipe and second intersection points B at touch-responsive areas edge1Between line segment length, i.e., | A1B1| length.
In the touch screen, adjacent sidelight linear distance | A1B1|、|A2B2|、|A3B3|…|AM-1BM-1| in maximum value and minimum The difference of value is less than or equal to first threshold, ideally, first threshold 0.
The embodiment of the present invention is to can control touch to the adjacent sidelight linear distance pipe based on control adjacent signals transmitting-receiving The principle of light net cyst areas size in response region and design, to tend to light net cyst areas in touch-responsive areas Homogenization, as long as meeting two groups of adjacent signal transmitting and receivings to the difference between the maxima and minima of the adjacent sidelight linear distance pipe Value is less than or equal to first threshold, and when first threshold is sufficiently small, the adjacent signals being calculated according to adjacent sidelight linear distance It receives and dispatches between the distance pipe come signal transmitting and receiving of arranging to pipe, then the uniformity coefficient of light in touch-responsive areas can be improved, mention The uniformity coefficient in bloom net cavity, effectively supports thin style of writing control algorithm；Further, since in the prior art, using equidistant close The touch accuracy of the touch screen of distribution infrared tube depends on the maximum value of the light net cyst areas of touch-responsive areas, therefore thinks The maximum value of light net cyst areas of touch-responsive areas is reduced to improve touch accuracy, needs to be distributed more equidistant tight The infrared tube of close distribution, and in the embodiment of the present invention, the uniform of light net cavity is improved to pipe by reasonable layout signal transmitting and receiving Property, when realizing same touch accuracy, less signal transmitting and receiving is can be used to pipe in the embodiment of the present invention, therefore reduces touch-control The production cost of screen.
Due in the prior art, using the scanning mode of 1 couple of N, from (N-1)/2 group of side to the other side reciprocal the (N-1)/2 the adjacent sidelight line-spacing between the infrared tube that the intermediate region between group infrared tube uses equidistantly distributed mode to be distributed From being equal, the light net cavity formed in light net corresponding region is more uniform, and first group of intermediate region side to (N- / 2 group 1) last group of region and the other side between is to the region between (N-1)/2 reciprocal group using existing etc. It is empty to form the non-uniform light net of size since adjacent sidelight linear distance is differed in light net corresponding region for spacing distribution mode Hole, it is possible to the signal transmitting and receiving of two side areas on the basis of intermediate region still uses equidistantly distributed signal transmitting and receiving to pipe Distribution is re-started to pipe, reduces the adjacent sidelight line of two side areas to the distance of pipe by adjusting signal transmitting and receiving in two side areas Distance achievees the purpose that reduce the corresponding light net cyst areas size of two side areas, by reducing the corresponding light net of two side areas Cyst areas, so that the maximum value of light net cyst areas reduces, light net cyst areas tends to homogenize, and touch accuracy is also mentioned It is high.
On the direction that the frame of touch screen extends to two sides, frame includes being located in the middle first area, being located at first The second area of region side and third region positioned at the first area other side；First area includes x group equidistantly distributed Signal transmitting and receiving is to pipe；Second area and third region respectively include the signal transmitting and receiving of the non-equidistantly distributed of y group to pipe.
As shown in fig. 6, lateral frame includes that equidistantly distributed signal transmitting and receiving believes the first area of pipe, non-equidistantly distributed Number second area of the transmitting-receiving to pipe and third region, and signal transmitting and receiving is in axis pair to the distribution of pipe in second area and third region Claim distribution.
Before touch screen production, the size that adjacent sidelight linear distance is first determined according to available accuracy demand is needed, then basis Adjacent sidelight linear distance calculates each group signal transmitting and receiving on touch screen and determines each group signal transmitting and receiving to the position of pipe the distance pipe It sets, then according to determining signal transmitting and receiving, to the position of pipe, the distribution signal transmitting-receiving on touch screen completes the life of touch screen to pipe It produces.
To guarantee that each group signal transmitting and receiving is between the difference of maximum value and minimum value in the adjacent sidelight linear distance pipe on touch screen Value is less than or equal to first threshold, can be according to same adjacent sidelight at position of each group signal transmitting and receiving on calculating touch screen to pipe Linear distance calculates, and error when convenient for actual production allows some leeway, and by control errors in controlled range, improves touch screen Touch accuracy.
Wherein, adjacent sidelight linear distance is determined according to available accuracy demand, be specifically as follows: is one or more straight to support Diameter is that the thin pen of 2mm can be accurately identified in touch-responsive areas, and it is 2mm that adjacent sidelight linear distance, which can be set, guarantees that thin pen exists Will not be excessive because of light net cyst areas in touch-responsive areas, and the white space appearance click for falling into light net cavity is reactionless Phenomena such as with scribing line broken string.
According to adjacent sidelight linear distance calculate each group signal transmitting and receiving on touch screen to tube spacing from principle it is as follows:
By taking Fig. 4,1 pair 7 of scanning mode shown in fig. 5 as an example, from the 3rd group of infrared tube to neighbour the 18th group of infrared tube Sidelight linear distance is equal as d0, distance D between corresponding infrared tube0Are as follows:
Wherein,
3rd group of infrared tube is with left first adjacent sidelight linear distance d1Distance D between corresponding infrared tube1Are as follows:
Wherein,
3rd group of infrared tube is with left second adjacent sidelight linear distance d2Distance D between corresponding infrared tube2Are as follows:
Wherein,
After fixed adjacent sidelight linear distance, then there is d0=d1=d2=...=dn。
It is found that signal transmitting and receiving meets following formula to the distribution of pipe in first area:
D0=d+2h*tan θ；
By simple mathematical induction it is found that in second area and third region signal transmitting and receiving the distribution of pipe is met it is following Formula, wherein second area and first group of signal transmitting and receiving in third region are to pipe close to first area:
Wherein, DnIndicate n-th group signal transmitting and receiving to pipe and (n+1)th group of signal transmitting and receiving to the distance between pipe；D indicates adjacent side Light distance；H indicates the transmitting-receiving of touch-responsive areas distance signal to the distance of the frame where the transmitting terminal of pipe；Tan θ indicates letter The tangent value of number transmitting-receiving to the maximum emission angle of the transmitting terminal of pipe；DiIndicate that i-th group of signal transmitting and receiving receives pipe and i+1 group signal Hair is to the distance between pipe；H indicates signal transmitting and receiving to the vertical range between the transmitting terminal and receiving end of pipe.
In the production of touch screen, according to scanning mode, the size of N in the scanning mode of 1 couple of N is determined, while determining N Also determined that signal transmitting and receiving to the size of the emission maximum angle θ of pipe transmitting light.
To need setting signal transmitting-receiving is D by distance to the frame where the transmitting terminal of pipe0Equidistantly distributed mode calculate Out side (N-1)/2 group signal transmitting and receiving to pipe and other side inverse (N-1)/2 group signal transmitting and receiving to the position where pipe, so The frame is divided into first area, second area and third region afterwards.
First area is side (N-1)/2 group signal transmitting and receiving to pipe to the other side inverse (N-1)/2 group signal transmitting and receiving To the region between pipe, in first area according to space D0Equidistantly distributed signal transmitting and receiving is to pipe.
Second area is the region of first area side, according to space DnNon- equidistant point since from first area Cloth signal transmitting and receiving is to pipe, until being booked second area.
Third region is the region of the first area other side, according to space DnIt is non-equidistant since from first area Distribution signal transmitting-receiving is to pipe, until being booked third region.
In addition, the length in second area or third region is equal to L, L meets following inequality:
H*tanθ-D0≤ L < H*tan θ；
If L is greater than H*tan θ, the signal transmitting and receiving of first area and second area intersection in pipe and second area near Nearly intersection signal transmitting and receiving is D to the spacing between pipe to the signal transmitting and receiving of pipe0When can to meet adjacent sidelight linear distance equal, this First area and the secondth area should be to pipe near this group signal transmitting and receiving of the intersection signal transmitting and receiving to pipe in sample second area The point of interface in domain, rather than second area is only belonged to, third region is similar, repeats no more.
If L is less than H*tan θ-D0, the signal transmitting and receiving of first area and second area intersection is in pipe and first area It is D to the spacing between pipe to the signal transmitting and receiving of pipe near intersection signal transmitting and receiving0When be not able to satisfy adjacent sidelight linear distance phase Second area should be only belonged to pipe Deng the signal transmitting and receiving of, such first area and second area intersection, rather than first area With the point of interface of second area.Third region is similar, and details are not described herein.
Further, since touch screen provided by the embodiment of the present invention includes at least one set of frame, by taking rectangular touch screen as an example, The rectangular touch screen includes lateral frame and vertical frame, can merely transversely on frame signal transmitting and receiving the distribution of pipe is met it is above-mentioned Distribution mode, can also only signal transmitting and receiving meets above-mentioned distribution mode to the distribution of pipe on vertical frame, or lateral frame and Signal transmitting and receiving is all satisfied above-mentioned distribution mode to the distribution of pipe on vertical frame.
By taking signal transmitting and receiving on merely transversely frame meets above-mentioned distribution mode to the distribution of pipe as an example, as shown in Figure 7 and Figure 8, Fig. 7 be it is existing using equidistantly distributed signal transmitting and receiving to the structural schematic diagram of the rectangular touch screen of pipe, wherein signal transmitting and receiving is to pipe With equidistant D0Distribution；Fig. 8 is that the structure for the touch screen that any adjacent sidelight linear distance provided in an embodiment of the present invention is equal is shown Being intended to, i.e., the two of arbitrary neighborhood group signal transmitting and receiving is equal the adjacent sidelight linear distance pipe, in the touch screen, first area Signal transmitting and receiving to pipe with equidistant D0Distribution；In adjacent sidelight linear distance and first area in second area and third region Adjacent sidelight linear distance is equal；Fig. 7 and Fig. 8 are compared, it can thus be seen that Fig. 8 is adjacent in the two side areas to frame lateral in Fig. 7 Equal signal transmitting and receiving does not carry out spacing adjustment to pipe to sidelight linear distance, so that all adjacent sidelight linear distances are homogeneous on lateral frame Deng comparing the size in light net cavity at lateral frame two side areas in two width figures, i.e. the area of dash area in two width figures Size, it can be seen that in Fig. 8, the area of the shade either at frame or the area of the shade at cross central line are respectively less than and scheme The area of corresponding position shade in 7, so can be improved in the touch-responsive areas of touch screen by controlling adjacent sidelight linear distance The uniformity coefficient of light effectively reduces the Maximum Area in the light net cavity in touch-responsive areas, effectively supports thin written calculation method, Improve touch accuracy.
And since light net cyst areas reduces in Fig. 8, the touch accuracy of touch screen is more smart than the touch-control of touch screen shown in Fig. 7 Degree wants high, if being improved the touch accuracy of touch screen shown in Fig. 7 to the touch-control essence of touch screen shown in Fig. 8 using the prior art Degree need to be distributed the signal transmitting and receiving of equidistant tight distribution more pair to pipe, and touch screen shown in Fig. 8 passes through reasonable layout signal Transmitting-receiving can improve the uniformity in light net cavity to pipe, improve touch accuracy, reduce the production cost of touch screen.
In addition, can be selected according to actual needs according to above-mentioned distribution mode when touch screen includes at least two groups frame Two or more sets frame distribution signals are received and dispatched to pipe, wherein two groups of adjacent signal transmitting and receivings are between the adjacent side pipe in every group of frame It includes two groups of frames that light distance, which is all satisfied the difference between maxima and minima less than or equal to first threshold, such as touch screen, When, two groups of adjacent signal transmitting and receivings are all satisfied between maxima and minima the adjacent sidelight linear distance pipe in first group of frame Difference be less than or equal to first threshold, two groups of adjacent signal transmitting and receivings are equal between the adjacent sidelight linear distance pipe in second group of frame The difference met between maxima and minima is less than or equal to first threshold；Moreover, the adjacent sidelight linear distance of first group of frame Maximum value can be equal with the maximum value of the adjacent sidelight linear distance of second group of frame, can also be unequal, according to available accuracy Demand determines corresponding adjacent sidelight linear distance before producing touch screen.
Corresponding to foregoing invention embodiment, the embodiment of the present invention be distributed in the touch screen of 65 cun of types infrared tube with Reach in touch-responsive areas and is illustrated for high-precision effect.
Adjacent sidelight linear distance on the lateral frame of the touch screen between two groups of adjacent infrared tubes meet maximum value with most Difference between small value is less than or equal to first threshold, wherein the size of 65 cun of touch screens is 1433.6mm × 808.6mm, really Determine tan θ=0.5, d=2mm, h=18mm, leftmost side transmitting terminal on lateral frame taken to be starting point and be disposed at 12mm, Position on lateral frame as shown in Table 1 where each infrared tube and each can be calculated according to above-mentioned distribution mode The distance between infrared tube, by calculating, it is known that, 85 pairs of infrared tubes need to be distributed altogether on the lateral frame of the touch screen, Successively from left to right the 1st, the 2nd, the 3rd ..., the 83rd, the 84th, the 85th pair of infrared tube, it is corresponding on lateral frame Abscissa be followed successively by A1, A2 ..., A84, A85, wherein region the 1st to the 27th between of infrared tube is second area, is pressed According to spacing a1, a2 ..., a25, a26 be sequentially distributed infrared tube, the region the 27th to the 59th between of infrared tube be the firstth area Domain is sequentially distributed infrared tube according to spacing b, and the region the 59th to the 85th between of infrared tube is third region, according to spacing A26, a25 ..., a2, a1 be sequentially distributed infrared tube.
Table 1
What number, abscissa and the spacing for the infrared tube being calculated according to above-mentioned table 1 were distributed on lateral frame Infrared tube, the number of the corresponding receiving end of each transmitting terminal is 30~40 in transverse direction, enables each on vertical frame Transmitting terminal corresponds to all receiving ends, can form about 1.2 ten thousand light in the touch-responsive areas formed according to above-mentioned distribution mode Line, as shown in figure 9, the area in the light net cavity formed between light is far smaller than the touching object and touch screen that diameter is 2mm The area of contact, that is to say, that when arbitrary diameter is that the touching object of 2mm is fallen into touch-responsive areas, there is at least three side To light be blocked, combined high precision touch-control algorithm can to touching object carry out effective position.
And after in the present solution, being distributed infrared tube using above-mentioned distribution mode, it is known that 85 pairs of setting is red on lateral frame Outside to pipe, 91 pairs of infrared tubes are set, totally 176 pairs of infrared tubes on vertical frame, compared to producing in the market with two classes of size Product: the product 1 of equidistant tight distribution infrared tube is used to need the quantity of infrared tube for 373 pairs, product 2 needs infrared right The quantity of pipe is 305 pairs, and the quantity for reducing infrared tube respectively is 197 pairs, 129 pairs, greatly reduces production cost, improves Product stability also accelerates the speed of service of touch-control algorithm.
Analysis based on problem present in the above-mentioned touch screen to existing equidistantly distributed infrared tube is as a result, the present invention is real It applies example and additionally provides another touch screen, as shown in Figure 10, which includes at least one set of frame, wherein every group of frame includes Two frames being oppositely arranged, signal transmitting and receiving are provided on the frame to pipe, and signal transmitting and receiving includes transmitting terminal and receiving end to pipe, Transmitting terminal and receiving end are separately positioned on two opposite frames of same group of frame, and wherein receiving end is for receiving transmitting terminal hair The signal penetrated；On the direction that frame extends to two sides, frame includes being located in the middle first area, being located at first area side Second area and third region positioned at the first area other side；First area includes the signal transmitting and receiving of x group equidistantly distributed To pipe；Second area and third region respectively include the signal transmitting and receiving of the non-equidistantly distributed of y group to pipe；Second area or third area The length in domain is equal to L, wherein H*tan θ-D0≤ L < H*tan θ；D0Indicate that two adjacent groups signal transmitting and receiving is to pipe in first area Between spacing；Tan θ indicates signal transmitting and receiving to the tangent value of the maximum emission angle of the transmitting terminal of pipe；H indicates signal transmitting and receiving to pipe Vertical range between transmitting terminal and receiving end.
Illustratively, Figure 10 gives a kind of touch screen, wherein the touch screen includes two frames L1, L2, and L1 and L2 are One group of transverse direction frame being oppositely arranged, M group signal transmitting and receiving is distributed on the transverse direction frame to pipe, due to different scanning modes, First area, second area are different with the length in third region, and the signal transmitting and receiving for including is different to the quantity of pipe, with letter in Figure 10 For the scanning mode that number transmitting-receiving is 1 pair 7 to the scanning mode of pipe, first area includes the signal receipts of M-4 group equidistantly distributed Hair separately includes the signal transmitting and receiving of 3 groups of non-equidistantly distributeds to pipe to pipe, second area and third region；In the scanning side of 1 couple of N In formula, the length in second area and third region is L, separately includes the signal transmitting and receiving of the non-equidistantly distributed of y group to pipe, the firstth area Domain includes the signal transmitting and receiving of x group equidistantly distributed to pipe, and certain touch screen further includes two vertical frames, common with L1, L2 Group is rectangular, is only illustrated by taking two lateral frame L1, L2 as an example in embodiments of the present invention.
The touch screen includes touch-responsive areas, i.e. is formed with first group of signal transmitting and receiving on the left of lateral frame to pipe in Figure 10 Light and first group of signal transmitting and receiving of vertical edges frame bottom to pipe formed light intersection point O1For starting point, on the right side of lateral frame The light that the light and last group of signal transmitting and receiving of vertical edges arch that last group of signal transmitting and receiving forms pipe form pipe Intersection point O2For terminal, the rectangle formed along horizontal vertical direction is known as touch-responsive areas.
The embodiment of the present invention is to can control based on signal transmitting and receiving in control second area and third region to the spacing of pipe The principle of light net cyst areas size in touch-responsive areas and design, due in the prior art, using the scanning side of 1 couple of N Formula, the intermediate region (N-1)/2 group infrared tube reciprocal from (N-1)/2 group of side to the other side using etc. between The light net cavity formed away from distribution mode is more uniform, and first group of intermediate region side to the area between (N-1)/2 group The last group of region arrived between inverse (N-1)/2 group of domain and the other side uses existing equidistantly distributed mode meeting The non-uniform light net cavity of size is formed in light net corresponding region, influences touch accuracy, it is possible in intermediate region Distribution is still re-started to pipe to the signal transmitting and receiving of two side areas on the basis of pipe using equidistantly distributed signal transmitting and receiving, is passed through Signal transmitting and receiving reaches the mesh for reducing the corresponding light net cyst areas size of two side areas to the distance of pipe in adjustment two side areas , by reducing the corresponding light net cyst areas of two side areas, so that the maximum value of light net cyst areas reduces, light net cavity face Product tends to homogenize, and touch accuracy is also improved.
In order to increase less signal transmitting and receiving while improving touch accuracy to pipe, maximum equidistantly distributed letter Number transmitting-receiving is to pipe, and the length for controlling second area or third region is equal to L, and L meets following inequality:
H*tanθ-D0≤ L < H*tan θ；
If L is greater than H*tan θ, the signal transmitting and receiving of first area and second area intersection in pipe and second area near Nearly intersection signal transmitting and receiving is D to the spacing between pipe to the signal transmitting and receiving of pipe0When can meet: second area is near boundary Place's signal transmitting and receiving can achieve maximum emission angle to the angle of second area transmitting light to pipe, be formed in light net corresponding region Light net cavity is more uniform, should be near this group signal transmitting and receiving of the intersection signal transmitting and receiving to pipe to pipe in such second area The point of interface of first area and second area, rather than second area is only belonged to, third region is similar, repeats no more.
If L is less than H*tan θ-D0, the signal transmitting and receiving of first area and second area intersection is in pipe and first area It is D to the spacing between pipe to the signal transmitting and receiving of pipe near intersection signal transmitting and receiving0When be not able to satisfy: first area and second The signal transmitting and receiving of region intersection can achieve maximum emission angle to the angle of second area transmitting light to pipe, in light net pair The light net cavity for answering region to be formed is uneven, and such first area and the signal transmitting and receiving of second area intersection should only belong to pipe Second area, rather than the point of interface of first area and second area.Third region is similar, and details are not described herein.
Further, since in the prior art, the touch accuracy using the touch screen of equidistant tight distribution infrared tube depends on In the maximum value of the light net cyst areas of touch-responsive areas, therefore want to reduce the light net cyst areas of touch-responsive areas Maximum value needs to be distributed the infrared tube of more equidistant tight distributions to improve touch accuracy, and in the embodiment of the present invention, The uniformity for improving light net cavity to pipe by reasonable layout signal transmitting and receiving, when realizing same touch accuracy, the present invention is implemented Less signal transmitting and receiving can be used to pipe in example, therefore reduces the production cost of touch screen.
Further, signal transmitting and receiving can also meet the distribution mode of pipe on touch screen: so that two groups of adjacent signals Transmitting-receiving is less than or equal to first threshold to the difference between the maxima and minima of the adjacent sidelight linear distance pipe.
Wherein, adjacent sidelight linear distance are as follows: in pipe, the first signal transmitting and receiving emits pipe inclined two groups of adjacent signal transmitting and receivings To second signal transmitting-receiving to first intersection point at the touch-responsive areas edge of the maximum angle light and touch screen of pipe and the second letter Second friendship of the first signal transmitting and receiving of deviation that number transmitting-receiving emit pipe to the maximum angle light and touch-responsive areas edge of pipe The length of line segment between point.
In touch screen production process, in first area, equidistantly distributed signal transmitting and receiving is to pipe, second, third region it is non-it is equal between When receiving and dispatching away from distribution signal to pipe, guarantee each signal transmitting and receiving between the maxima and minima of the adjacent sidelight linear distance pipe Difference is less than or equal to first threshold, controls signal transmitting and receiving to pipe on the basis of the adjacent sidelight linear distance pipe by signal transmitting and receiving Between spacing, can preferably improve the uniformity in light net cavity, improve touch accuracy.
Due in actual production, inevitably with the presence of error, so guaranteeing adjacent signals transmitting-receiving on touch screen First threshold, the first threshold are less than or equal between the difference between the maxima and minima in the adjacent sidelight linear distance pipe Value is admissible worst error value, and first threshold is smaller, and the touch-control effect of touch screen is better, in the ideal situation, the first threshold Value is 0, i.e., two groups of signal transmitting and receivings of arbitrary neighborhood are equal the adjacent sidelight linear distance pipe in touch screen.
Illustratively, as shown in figure 11, which includes two frames L1, L2, and L1 and L2 are one group be oppositely arranged M group signal transmitting and receiving is distributed on the transverse direction frame to pipe for lateral frame, and wherein adjacent signals transmitting-receiving is between sidelight linear distance adjacent pipe Less than or equal to first threshold, in Figure 11 by taking the scanning mode that scanning mode of the signal transmitting and receiving to pipe is 1 pair 7 as an example, the firstth area Domain includes that the signal transmitting and receiving of M-4 group equidistantly distributed separately includes 3 groups of non-equidistantly distributeds to pipe, second area and third region Signal transmitting and receiving to pipe；In the scanning mode of 1 couple of N, the length in second area and third region is L, and it is non-etc. to separately include y group For the signal transmitting and receiving of spacing distribution to pipe, first area includes the signal transmitting and receiving of x group equidistantly distributed to pipe；Certain touch screen also wraps Two vertical frames are included, collectively constitute rectangle with L1, L2, are only with two transverse directions frame L1, L2 in embodiments of the present invention Example is illustrated.
The touch screen includes touch-responsive areas, i.e. is formed with first group of signal transmitting and receiving on the left of lateral frame to pipe in Figure 11 Light and first group of signal transmitting and receiving of vertical edges frame bottom to pipe formed light intersection point O1For starting point, on the right side of lateral frame The light that the light and last group of signal transmitting and receiving of vertical edges arch that last group of signal transmitting and receiving forms pipe form pipe Intersection point O2For terminal, the rectangle formed along horizontal vertical direction is known as touch-responsive areas.
By in Figure 11 left side first group of signal transmitting and receiving to pipe and second group of signal transmitting and receiving to pipe for, adjacent sidelight linear distance is First group of signal transmitting and receiving rings second group of signal transmitting and receiving of deviation that pipe emits to the touch of the maximum angle light A and touch screen of pipe Answer the first intersection point A of edges of regions1Maximum of the first group of signal transmitting and receiving of deviation that pipe is emitted with second group of signal transmitting and receiving to pipe The second intersection points B of angle light B and touch-responsive areas edge1Between line segment length, i.e., | A1B1| length.
In the touch screen, adjacent sidelight linear distance | A1B1|、|A2B2|、|A3B3|…|AM-1BM-1| in maximum value and minimum The difference of value is less than or equal to first threshold, ideally, first threshold 0.
Before touch screen production, the size of adjacent sidelight linear distance can be first determined according to available accuracy demand, then root Calculating each group signal transmitting and receiving on touch screen according to adjacent sidelight linear distance determines each group signal transmitting and receiving to the position of pipe the distance pipe It sets, then according to determining signal transmitting and receiving, to the position of pipe, the distribution signal transmitting-receiving on touch screen completes the life of touch screen to pipe It produces.
To guarantee that each group signal transmitting and receiving is between the difference of maximum value and minimum value in the adjacent sidelight linear distance pipe on touch screen Value is less than or equal to first threshold, can be according to same adjacent sidelight at position of each group signal transmitting and receiving on calculating touch screen to pipe Linear distance calculates, and error when convenient for actual production allows some leeway, and by control errors in controlled range, improves touch screen Touch accuracy.
Wherein, adjacent sidelight linear distance is determined according to available accuracy demand, be specifically as follows: is one or more straight to support Diameter is that the thin pen of 2mm can be accurately identified in touch-responsive areas, and it is 2mm that adjacent sidelight linear distance, which can be set, guarantees that thin pen exists Will not be excessive because of light net cyst areas in touch-responsive areas, and the white space appearance click for falling into light net cavity is reactionless Phenomena such as with scribing line broken string.
According to adjacent sidelight linear distance calculate each group signal transmitting and receiving on touch screen to tube spacing from principle it is as follows:
By taking Fig. 4,1 pair 7 of scanning mode shown in fig. 5 as an example, from the 3rd group of infrared tube to neighbour the 18th group of infrared tube Sidelight linear distance is equal as d0, distance D between corresponding infrared tube0Are as follows:
Wherein,
3rd group of infrared tube is with left first adjacent sidelight linear distance d1Distance D between corresponding infrared tube1Are as follows:
Wherein,
3rd group of infrared tube is with left second adjacent sidelight linear distance d2Distance D between corresponding infrared tube2Are as follows:
Wherein,
After fixed adjacent sidelight linear distance, then there is d0=d1=d2=...=dn。
It is found that signal transmitting and receiving meets following formula to the distribution of pipe in first area:
D0=d+2h*tan θ；
By simple mathematical induction it is found that in second area and third region signal transmitting and receiving the distribution of pipe is met it is following Formula, wherein second area and first group of signal transmitting and receiving in third region are to pipe close to first area:
Wherein, DnIndicate n-th group signal transmitting and receiving to pipe and (n+1)th group of signal transmitting and receiving to the distance between pipe；D indicates adjacent side Light distance；H indicates the transmitting-receiving of touch-responsive areas distance signal to the distance of the frame where the transmitting terminal of pipe；Tan θ indicates letter The tangent value of number transmitting-receiving to the maximum emission angle of the transmitting terminal of pipe；DiIndicate that i-th group of signal transmitting and receiving receives pipe and i+1 group signal Hair is to the distance between pipe；H indicates signal transmitting and receiving to the vertical range between the transmitting terminal and receiving end of pipe.
In the production of touch screen, according to scanning mode, the size of N in the scanning mode of 1 couple of N is determined, while determining N Also determined that signal transmitting and receiving to the size of the emission maximum angle θ of pipe transmitting light.
To need setting signal transmitting-receiving is D by distance to the frame where the transmitting terminal of pipe0Equidistantly distributed mode calculate Out side (N-1)/2 group signal transmitting and receiving to pipe and other side inverse (N-1)/2 group signal transmitting and receiving to the position where pipe, so The frame is divided into first area, second area and third region afterwards.
First area is side (N-1)/2 group signal transmitting and receiving to pipe to the other side inverse (N-1)/2 group signal transmitting and receiving To the region between pipe, in first area according to space D0Equidistantly distributed signal transmitting and receiving is to pipe.
Second area is the region of first area side, according to space DnNon- equidistant point since from first area Cloth signal transmitting and receiving is to pipe, until being booked second area.
Third region is the region of the first area other side, according to space DnIt is non-equidistant since from first area Distribution signal transmitting-receiving is to pipe, until being booked third region.
Further, since touch screen provided by the embodiment of the present invention includes at least one set of frame, by taking rectangular touch screen as an example, The rectangular touch screen includes lateral frame and vertical frame, can merely transversely on frame signal transmitting and receiving the distribution of pipe is met it is above-mentioned Distribution mode, can also only signal transmitting and receiving meets above-mentioned distribution mode to the distribution of pipe on vertical frame, or lateral frame and Signal transmitting and receiving is all satisfied above-mentioned distribution mode to the distribution of pipe on vertical frame.
By taking signal transmitting and receiving on merely transversely frame meets above-mentioned distribution mode to the distribution of pipe as an example, as shown in Figure 7 and Figure 8, Fig. 7 be it is existing using equidistantly distributed signal transmitting and receiving to the structural schematic diagram of the rectangular touch screen of pipe, wherein signal transmitting and receiving is to pipe With equidistant D0Distribution；Fig. 8 is first area provided in an embodiment of the present invention with equidistant D0Equidistantly distributed signal transmitting and receiving pair Pipe, second, third region is with space DnStructural schematic diagram of the non-equidistantly distributed signal transmitting and receiving to the touch screen of pipe；By Fig. 7 with Fig. 8 is compared, it can thus be seen that Fig. 8 is to form the non-uniform signal in light net cavity in the two side areas to frame lateral in Fig. 7 to receive Hair carries out spacing adjustment to pipe, compares the size in light net cavity at lateral frame two side areas in two width figures, i.e. two width figures The size of middle dash area, it can be seen that in Fig. 8, the area or the yin at cross central line of the shade either at frame The area of shadow is respectively less than the area of corresponding position shade in Fig. 7, so by adjusting two side areas signal transmitting and receiving between pipe Away from the uniformity coefficient of light in the touch-responsive areas of touch screen can be improved, effectively reduce the light net in touch-responsive areas The Maximum Area in cavity effectively supports thin written calculation method, improves touch accuracy.
And since light net cyst areas reduces in Fig. 8, the touch accuracy of touch screen is more smart than the touch-control of touch screen shown in Fig. 7 Degree wants high, if being improved the touch accuracy of touch screen shown in Fig. 7 to the touch-control essence of touch screen shown in Fig. 8 using the prior art Degree need to be distributed the signal transmitting and receiving of equidistant tight distribution more pair to pipe, and touch screen shown in Fig. 8 passes through reasonable layout signal Transmitting-receiving can improve the uniformity in light net cavity to pipe, improve touch accuracy, reduce the production cost of touch screen.
In addition, can be selected according to actual needs according to above-mentioned distribution mode when touch screen includes at least two groups frame Two or more sets frame distribution signals are received and dispatched to pipe, wherein two groups of adjacent signal transmitting and receivings are between the adjacent side pipe in every group of frame It includes two groups of frames that light distance, which is all satisfied the difference between maxima and minima less than or equal to first threshold, such as touch screen, When, two groups of adjacent signal transmitting and receivings are all satisfied between maxima and minima the adjacent sidelight linear distance pipe in first group of frame Difference be less than or equal to first threshold, two groups of adjacent signal transmitting and receivings are equal between the adjacent sidelight linear distance pipe in second group of frame The difference met between maxima and minima is less than or equal to first threshold；Moreover, the adjacent sidelight linear distance of first group of frame Maximum value can be equal with the maximum value of the adjacent sidelight linear distance of second group of frame, can also be unequal, according to available accuracy Demand determines corresponding adjacent sidelight linear distance before producing touch screen.
Corresponding to the touch screen of foregoing invention embodiment, the embodiment of the invention also provides a kind of terminal device, the terminals Equipment includes touch screen described in foregoing invention embodiment.Terminal device can be intelligent TV set, mobile phone, tablet computer, ATM Machine etc. includes the intelligent terminal of touch screen.
Terminal device provided in an embodiment of the present invention, with the skill having the same of touch screen provided by foregoing invention embodiment Art feature reaches identical technical effect so also can solve identical technical problem.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Change or replacement in the technical scope disclosed by the present invention, should be covered by the protection scope of the present invention.Therefore, this hair Bright protection scope should be based on the protection scope of the described claims.

Claims (10)

1. a kind of touch screen, including at least one set of frame, wherein every group of frame includes two frames being oppositely arranged, the frame On be provided with signal transmitting and receiving to pipe, the signal transmitting and receiving includes transmitting terminal and receiving end to pipe, the transmitting terminal and the reception End is separately positioned on two opposite frames of same group of frame, wherein the receiving end is used to receive the transmitting terminal transmitting Signal；It is characterized by:
Signal transmitting and receiving meets the distribution mode of pipe on the touch screen: so that two groups of adjacent signal transmitting and receivings are between the adjacent side pipe Difference between the maxima and minima of light distance is less than or equal to first threshold；Wherein, the adjacent sidelight linear distance are as follows: For two groups of adjacent signal transmitting and receivings in pipe, the first signal transmitting and receiving receives and dispatches the maximum angle to pipe to the deviation second signal that pipe emits First intersection point at the touch-responsive areas edge of light and the touch screen and the second signal receive and dispatch the deviation emitted pipe First signal transmitting and receiving is to line segment between the maximum angle light of pipe and second intersection point at the touch-responsive areas edge Length.
2. touch screen according to claim 1, which is characterized in that any two groups of adjacent signal transmitting and receivings are between pipe Adjacent sidelight linear distance is equal.
3. touch screen according to claim 2, which is characterized in that the touch screen further include:
On the direction that the frame extends to two sides, the frame includes being located in the middle first area, being located at described first The second area of region side and third region positioned at the first area other side；
The first area includes the signal transmitting and receiving of x group equidistantly distributed to pipe；The second area and the third region point Not Bao Kuo the non-equidistantly distributed of y group signal transmitting and receiving to pipe.
4. touch screen according to claim 3, which is characterized in that the length in the second area or the third region is equal Equal to L, wherein H*tan θ-D0≤ L < H*tan θ；
Wherein, D0Indicate that two adjacent groups signal transmitting and receiving is between the spacing pipe in the first area；Tan θ indicates the signal transmitting and receiving To the tangent value of the maximum emission angle of the transmitting terminal of pipe；H indicates the signal transmitting and receiving to hanging down between the transmitting terminal and receiving end of pipe Straight distance.
5. touch screen according to claim 3, which is characterized in that first group of the second area and the third region Signal transmitting and receiving is to pipe close to the first area；
Signal transmitting and receiving meets following formula to the distribution of pipe in the second area and the third region:
Wherein, DnIndicate n-th group signal transmitting and receiving to pipe and (n+1)th group of signal transmitting and receiving to the distance between pipe；D indicates the adjacent side Light distance；H indicates distance of the touch-responsive areas apart from the signal transmitting and receiving to the frame where the transmitting terminal of pipe； Tan θ indicates the signal transmitting and receiving to the tangent value of the maximum emission angle of the transmitting terminal of pipe；DiIndicate i-th group of signal transmitting and receiving to pipe With i+1 group signal transmitting and receiving to the distance between pipe；D0Indicate that two adjacent groups signal transmitting and receiving is between pipe in the first area Spacing；H indicates the signal transmitting and receiving to the vertical range between the transmitting terminal and receiving end of pipe.
6. a kind of touch screen, including at least one set of frame, wherein every group of frame includes two frames being oppositely arranged, the frame On be provided with signal transmitting and receiving to pipe, the signal transmitting and receiving includes transmitting terminal and receiving end to pipe, the transmitting terminal and the reception End is separately positioned on two opposite frames of same group of frame, wherein the receiving end is used to receive the transmitting terminal transmitting Signal；It is characterized by:
On the direction that the frame extends to two sides, the frame includes being located in the middle first area, being located at described first The second area of region side and third region positioned at the first area other side；
The first area includes the signal transmitting and receiving of x group equidistantly distributed to pipe；The second area and the third region point Not Bao Kuo the non-equidistantly distributed of y group signal transmitting and receiving to pipe；
The length in the second area or the third region is equal to L, wherein H*tan θ-D0≤ L < H*tan θ；
Wherein, D0Indicate that two adjacent groups signal transmitting and receiving is between the spacing pipe in the first area；Tan θ indicates the signal transmitting and receiving To the tangent value of the maximum emission angle of the transmitting terminal of pipe；H indicates the signal transmitting and receiving to hanging down between the transmitting terminal and receiving end of pipe Straight distance.
7. touch screen according to claim 6, it is characterised in that:
Signal transmitting and receiving meets the distribution mode of pipe on the touch screen: so that two groups of adjacent signal transmitting and receivings are between the adjacent side pipe Difference between the maxima and minima of light distance is less than or equal to first threshold；Wherein, the adjacent sidelight linear distance are as follows: For two groups of adjacent signal transmitting and receivings in pipe, the first signal transmitting and receiving receives and dispatches the maximum angle to pipe to the deviation second signal that pipe emits First intersection point at the touch-responsive areas edge of light and the touch screen and the second signal receive and dispatch the deviation emitted pipe First signal transmitting and receiving is to line segment between the maximum angle light of pipe and second intersection point at the touch-responsive areas edge Length.
8. touch screen according to claim 7, which is characterized in that first group of the second area and the third region Signal transmitting and receiving is to pipe close to the first area；
Signal transmitting and receiving meets following formula to the distribution of pipe in the second area and the third region:
D0=d+2h*tan θ；
Wherein, DnIndicate n-th group signal transmitting and receiving to pipe and (n+1)th group of signal transmitting and receiving to the distance between pipe；D indicates the adjacent side Light distance；H indicates distance of the touch-responsive areas apart from the signal transmitting and receiving to the frame where the transmitting terminal of pipe； Tan θ indicates the signal transmitting and receiving to the tangent value of the maximum emission angle of the transmitting terminal of pipe；DiIndicate i-th group of signal transmitting and receiving to pipe With i+1 group signal transmitting and receiving to the distance between pipe；H indicates that the signal transmitting and receiving is vertical with receiving end between the transmitting terminal of pipe Distance.
9. touch screen according to claim 7, which is characterized in that the touch screen includes at least two groups frame, every group of side Two groups of adjacent signal transmitting and receivings are equal the adjacent sidelight linear distance pipe in frame.
10. a kind of terminal device, which is characterized in that including the described in any item touch screens of claim 1-9.
CN201910492632.7A 2019-06-06 2019-06-06 Touch screen and terminal equipment Active CN110275644B (en)

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CN104049808A (en) * 2013-03-13 2014-09-17 北京汇冠新技术股份有限公司 Optical network routing method for touch screen scanned by light ray and touch screen
KR20140140261A (en) * 2013-05-29 2014-12-09 주식회사 넥시오 Infrared rays touch screen apparatus applied to display apparatus with curved surface
CN104281329A (en) * 2013-07-02 2015-01-14 北京汇冠新技术股份有限公司 Method for improving edge touch accuracy of infrared touch screen
CN104281330A (en) * 2013-07-02 2015-01-14 北京汇冠新技术股份有限公司 Infrared touch screen and infrared element non-equidistant arranging method thereof
CN107783695A (en) * 2017-09-27 2018-03-09 深圳市天英联合教育股份有限公司 Infrared touch panel method for arranging, device and display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104049808A (en) * 2013-03-13 2014-09-17 北京汇冠新技术股份有限公司 Optical network routing method for touch screen scanned by light ray and touch screen
KR20140140261A (en) * 2013-05-29 2014-12-09 주식회사 넥시오 Infrared rays touch screen apparatus applied to display apparatus with curved surface
CN104281329A (en) * 2013-07-02 2015-01-14 北京汇冠新技术股份有限公司 Method for improving edge touch accuracy of infrared touch screen
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