CN114816114B - A photosensitive touch interaction method - Google Patents
A photosensitive touch interaction method Download PDFInfo
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- CN114816114B CN114816114B CN202210375057.4A CN202210375057A CN114816114B CN 114816114 B CN114816114 B CN 114816114B CN 202210375057 A CN202210375057 A CN 202210375057A CN 114816114 B CN114816114 B CN 114816114B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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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Abstract
The application discloses a photosensitive touch interaction method, and belongs to the technical field of display. The photosensitive touch interaction method is applied to a display module comprising a plurality of integrated modules, wherein each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor; and judging whether the display module currently performs touch interaction and corresponding touch interaction positioning according to the output signals of the light sensing sensors. According to the technical scheme, the technical problems that in the prior art, when the large-size display screen is used for realizing screen touch, the additional touch system is adopted to realize the touch function of the corresponding display screen are solved, the system structure of the display screen becomes complicated, and meanwhile, the display effect of the display screen is influenced and the defects of touch delay exist are solved.
Description
Technical Field
The application relates to the technical field of display, in particular to a photosensitive touch interaction method.
Background
Currently, three methods are mature aiming at the screen touch scheme of a large-size LED display screen. The first method is to install an infrared frame outside the screen, detect infrared light reflected by the point positions of the touch points by using infrared pairs of tubes, and calculate accurate coordinates of the touch points, so that touch refreshing is completed. The method has the advantages of low cost, low delay and capability of quickly and accurately determining the coordinates of the touch point. However, the disadvantage is that the infrared pair tube is arranged at a position, a circle of frame is required to be reserved on the screen, and no frame display can be realized. And secondly, a layer of metal grid is paved on the surface of the screen, wires of conductive metal such as copper and oxides of the conductive metal are densely distributed on the conductive layer of the PET base material to form grids with regular shapes, and a signal transmission function is realized through induction touch based on the attached conductive film. Its advantages are low cost, simple preparing process, high yield, curling and low sheet resistance, and less generation of moire fringes. Thirdly, a camera is arranged in front of a screen, a layer of protective film is sprayed on the surface of the screen, touch points are shot by the camera preset in front of the screen, image processing is carried out, and accurate positioning of the screen touch points is achieved. The method has the advantages of high positioning precision and good screen integration effect, and has the defects of higher delay, selection of the placement position of the camera and debugging of the touch control system by combining the site situation every time.
Therefore, in the above three schemes, the detection sensors for realizing the touch function are not about and are independently separated from the display screen, i.e. they all realize the touch function of the corresponding display screen by being independent of the additional touch system outside the structure of the display screen. Although the method has the advantages of low cost, low technical implementation difficulty, easy maintenance and the like, the method inevitably increases the complexity of the structure of the display screen, and simultaneously, the display effect of the display screen is affected and the touch delay exists.
Disclosure of Invention
The application mainly aims to provide a photosensitive touch interaction method, which aims to solve the technical problems that in the prior art, when a large-size display screen is used for realizing screen touch, an additional touch system is adopted to realize the touch function of a corresponding display screen, so that the system structure of the display screen becomes complicated, the display effect of the display screen is influenced, and the defects of touch delay and the like exist.
In order to achieve the above purpose, the application provides a photosensitive touch interaction method, which is applied to a display module comprising a plurality of integrated modules, wherein each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor; and judging whether touch interaction and corresponding touch interaction positioning are currently performed on the display module according to the output signals of the light sensing sensors.
Optionally, the step of monitoring the real-time output signals of the light sensing sensors of the display module specifically includes detecting whether the light sensing sensor with the abrupt change of the output signal appears at present, and acquiring the positions and the number of the light sensing sensors with the abrupt change of the output signal when the light sensing sensor with the abrupt change of the output signal appears at present.
Optionally, the step of detecting the current light sensing sensor whether the output signal suddenly changes specifically includes detecting a signal change value of a corresponding light sensing sensor if any one of the output signals of the light sensing sensors changes, and judging that the corresponding light sensing sensor currently has the output signal suddenly changes when the signal change value is greater than a first preset threshold value.
The step of judging whether the display module is in touch interaction or not and performing corresponding touch interaction positioning according to the output signals of the photosensitive sensors specifically comprises judging that the display module is not in touch interaction currently if the number of the photosensitive sensors with abrupt change of the output signals is not larger than a second preset threshold value, judging that the display module is in touch interaction currently if the number of the photosensitive sensors with abrupt change of the output signals is only one, performing a preset touch interaction positioning method to perform corresponding touch interaction positioning, and judging that the display module is in surface touch interaction currently if the number of the photosensitive sensors with abrupt change of the output signals is larger than one but smaller than the second preset threshold value and performing a preset surface touch interaction positioning method to perform corresponding touch interaction positioning.
Optionally, the preset touch interaction positioning method includes the steps of sequentially lighting each pixel point on the integrated module where a light sensing sensor with abrupt output signal changes is located to obtain a light intensity signal output by the corresponding light sensing sensor when each pixel point is lighted, comparing and sorting the light intensity signals corresponding to each pixel point when the pixel point is lighted, and judging the coordinate of the pixel point with the strongest light intensity signal corresponding to the pixel point when the pixel point is lighted as a touch point coordinate.
The preset point touch interaction positioning method comprises the steps of selecting four pixel points located at four peripheral corners on the integrated module where a light sensing sensor with abrupt output signals is located, lighting the four pixel points in a time-sharing mode to obtain light intensity signals output by the light sensing sensor when each pixel is lighted, and solving point-to-point deviation according to the light intensity signals corresponding to the four pixel points when the four pixel points are lighted in the time-sharing mode, and calculating to obtain corresponding touch point coordinates.
Optionally, the preset point touch interaction positioning method comprises the steps of carrying out refreshing operation of a preset pattern on the integrated module where the photosensitive sensor with abrupt change of output signals is located, obtaining corresponding light intensity signals output by the photosensitive sensor when the preset pattern is refreshed, and comparing coordinates of pixel points corresponding to the light intensity signals in a preset database to judge the coordinates as touch point coordinates.
Optionally, the method for establishing the preset database includes the steps of performing a refresh operation of a preset pattern on each integrated module, and recording a light intensity signal output by the corresponding light sensing sensor when the touch point is at each pixel point when the current integrated module performs the refresh operation, so as to establish the preset database.
Optionally, the preset touch interaction positioning method includes the steps of time-sharing lighting each pixel point on the integrated module where the light sensing sensor with abrupt output signal changes is located, so as to judge whether the light intensity signal output by the corresponding light sensing sensor is larger than a third preset threshold value when each pixel point is lighted, and judging the coordinates of the pixel point where the light intensity signal output by the corresponding light sensing sensor is larger than the preset threshold value when the pixel point is lighted as touch point coordinates.
Optionally, the preset surface touch interaction positioning method comprises the following steps of calculating the outline of the touch surface according to the positions of all the light sensing sensors with abrupt changes of the output signals and the intensity of the output signals, and judging the coordinates of the touch points according to the outline of the touch surface.
The application provides a photosensitive touch interaction method which is applied to a display module comprising a plurality of integrated modules, wherein each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor, so that each integrated module can be used as a minimum resolution unit of the display module, and the following photosensitive touch interaction process is realized, namely, each photosensitive sensor of the display module is monitored by real-time output signals. And judging whether the display module currently performs touch interaction and corresponding touch interaction positioning according to the output signals of the light sensing sensors. The operating principle of the touch control device is that the pixel points on the integrated modules are used as detection light sources to emit light to the surface of a touch control object when the touch control object approaches to one integrated module, so that corresponding reflected light rays are formed, and meanwhile, the light-sensitive sensors of the corresponding integrated modules can generate electric signals based on the light intensity of the reflected light rays after detecting the reflected light rays through the light guide through holes, so that the position of the touch control object is determined, and real-time touch control interaction of the display module is realized. Therefore, the touch interaction of the display screen module is realized through the integrated packaging structure, the system structure of the display screen module can be effectively simplified, the display effect of the display screen is not affected, and the defect of touch delay is avoided. Therefore, the technical scheme can solve the technical problems that in the prior art, when the screen touch is realized aiming at the large-size display screen, the additional touch system is adopted to realize the touch function of the corresponding display screen, so that the system structure of the display screen becomes complicated, and meanwhile, the display effect of the display screen is influenced and the defects of touch delay exist.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a flow chart of a photosensitive touch interaction method according to an embodiment of the present application.
Fig. 2 is a schematic cross-sectional structure of an integrated module according to an embodiment of the present application.
Fig. 3 is a specific flowchart of step S120 of the photosensitive touch interaction method shown in fig. 1.
Fig. 4 is a first flowchart of a preset touch interactive positioning method according to an embodiment of the present application.
Fig. 5 is a second flowchart of a preset touch interactive positioning method according to an embodiment of the present application.
Fig. 6 is a third flowchart of a preset touch interactive positioning method according to an embodiment of the present application.
Fig. 7 is a fourth flowchart of a preset touch interactive positioning method according to an embodiment of the present application.
Detailed Description
The following describes the embodiments of the present application further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present application, but is not intended to limit the present application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
In one embodiment, as shown in fig. 1, an embodiment of the present application provides a photosensitive touch interaction method, which specifically includes the following steps:
and S110, monitoring output signals of all the photosensitive sensors of the display module in real time.
Specifically, the photosensitive touch interaction method of the embodiment of the application is mainly applied to a display module including a plurality of integrated modules 100 as shown in fig. 2, and a plurality of integrated modules 100 may be specifically and fixedly arranged on a module PCB of the display module in a matrix distribution, each integrated module 100 is correspondingly provided with a plurality of pixels 110 and a photosensitive sensor 120, and meanwhile, in a packaging structure of the integrated module 100, the photosensitive sensor 120 and the plurality of pixels 110 are not on one layer, but on both front and back surfaces of the integrated substrate 130, so that normal packaging of the plurality of pixels 110 is not affected due to a volume problem of the photosensitive sensor 120. The plurality of pixel points 110 may be specifically distributed on the front surface of the integrated substrate 130 in a matrix manner so as to form a display surface of the display module, and the photosensitive sensor 120 may be specifically fixed on the back surface of the integrated substrate 130 and located at the right center of the back surface, so that the photosensitive sensor 120 may detect the light intensity at the front surface of the integrated substrate 130, a light guide through hole 131 is further formed at the right center of the integrated substrate 130, and the photosensitive surface of the photosensitive sensor 120 is opposite to the light guide through hole 131. In order to make the light at the front surface of the integrated substrate 130 be uniformly directed to the photosensitive surface of the photosensitive sensor 120, some light guiding structures, such as light guiding columns, may be disposed in the light guiding through holes 131.
At the moment, when the photosensitive touch interaction is performed on the display module, real-time output signal monitoring is performed on each photosensitive sensor of the display module, and the method comprises the specific processes of detecting whether the photosensitive sensor with abrupt change of output signals occurs currently and acquiring the positions and the number of the photosensitive sensors with abrupt change of the output signals when the photosensitive sensor with abrupt change of the output signals occurs currently.
In general, under the condition that no obvious external ambient light suddenly changes, the output of the photosensitive sensor 120 fluctuates in a limited frequency band, because the signals received by the photosensitive sensor 120 are mostly weak signal flows, including light leakage inside the integrated module 100, external ambient light, and object reflection at a certain distance in front of the screen, the light is characterized by diffuse reflection, the light disorder is strong, only a small part of light sources can enter the photosensitive sensor, and the signal output of the photosensitive sensor 120 is caused, and further, the fluctuation caused by the light can fall into a stable frequency band from a long time, namely, the output signal of the photosensitive sensor 120 can be stably transformed in the frequency band, which is bottom noise. For the display module of the present application, to distinguish between the touch signal and the interference signal, it is necessary to rely on the signal variation characteristics of each photosensitive sensor 120. The change characteristics and other factors of the touch signal are significantly different, and the change characteristics and other factors may be specifically that the dynamic change amplitude of the touch signal is steeper compared with other changes, that is, the photosensitive sensor 120 has a sudden point in time length, after which the output signal (specifically, the value of the output voltage) of the photosensitive sensor 120 may be significantly increased, which means that the touch signal appears, or significantly reduced, which means that the touch signal disappears. Based on the characteristics, the display module can determine that the change situation is from the touch signal.
The specific process of detecting whether the output signal of the photosensitive sensor suddenly changes can be as follows, if any output signal of the photosensitive sensor changes, detecting a signal change value of the corresponding photosensitive sensor, and when the signal change value is greater than a first preset threshold value, judging that the corresponding photosensitive sensor suddenly changes. Taking the output signal of the photosensitive sensor 120 as an example of a voltage value, if the voltage value output by the photosensitive sensor 120 suddenly increases and the increasing amplitude is greater than a first preset threshold (the first preset threshold can be reasonably adjusted and set according to the actual detection precision requirement), it can be determined that the corresponding photosensitive sensor 120 has an output signal mutation currently, and the number, the position and the corresponding output signal value of the photosensitive sensors 120 determined as the output signal mutation can be used as the basis for subsequently determining whether the display module currently has touch interaction and performing corresponding touch interaction positioning.
Step S120, judging whether the display module currently performs touch interaction and corresponding touch interaction positioning according to the output signals of the light sensing sensors.
Specifically, in general, abrupt changes in the output signal of the photosensor 120 may be caused by direct light in addition to the touch signal, and the direct light is usually caused by irradiation of a lamp, direct sunlight, etc. on a screen, and there is no large change in the time of several frames, so it is possible to distinguish by judging whether such abrupt changes occur on a plurality of integrated modules. At this time, as shown in fig. 3, the process of executing the method step of "determining whether the display module generates touch interaction and performs corresponding touch interaction positioning according to the output signals of each photosensitive sensor" is specifically as follows:
step S121, if the number of the light-sensitive sensors without output signal mutation or the number of the light-sensitive sensors with output signal mutation is more than a second preset threshold, judging that no touch interaction occurs in the display module.
Step S122, if the number of the photosensitive sensors with abrupt change of the output signals is only one, judging that touch interaction in the form of point touch occurs at present in the display module, and executing a preset point touch interaction positioning method to perform corresponding touch interaction positioning.
Step S123, if the number of the photosensitive sensors with abrupt change of the output signal is larger than one but smaller than a second preset threshold, judging that the touch interaction of the surface touch mode occurs at present in the display module, and executing a preset surface touch interaction positioning method to perform corresponding touch interaction positioning.
In the above method steps, it is also determined that the display module does not have touch interaction at present when the number of the photosensitive sensors with abrupt output signal changes is greater than the second preset threshold, mainly for eliminating the abrupt output signal changes of the photosensitive sensors 120 caused by direct light, which is generally caused by irradiation of a shot light, direct sunlight, etc. on a screen, which is generally caused by irradiation of a large area on the screen, resulting in abrupt output signal changes of a plurality of photosensitive sensors 120, so that it can be determined whether the abrupt output signal changes of the photosensitive sensors 120 caused by direct light are caused by the abrupt output signal changes by detecting whether the number of the photosensitive sensors with abrupt output signal changes is greater than the second preset threshold (the second preset threshold can be reasonably adjusted according to the actual detection accuracy).
In addition, the touch interaction mode can be quite rich. Specifically, the screen can be clicked by the touch pen with the reflecting surface so as to generate light reflection at the clicking position, and touch positioning is realized. The finger can also be directly slid, and light rays are reflected on the finger, so that touch control positioning is realized. When far touch is faced, the light of the irradiated area can be rapidly enhanced by laser irradiation, so that touch positioning is realized. The touch interaction modes are divided according to the number of the light sensing sensors affected by the touch interaction modes, and can be roughly divided into two touch interaction types, one touch interaction type is a touch interaction type of a point touch type, for example, the touch pen clicks a screen and irradiates a laser, the contact area is smaller, and only the output signal of one light sensing sensor 120 is affected, so that when the fact that only one light sensing sensor with abrupt change of the output signal is detected, the touch interaction of the point touch type of the display module can be judged, meanwhile, the contact area is smaller, and the possible contact position is only one pixel 110 of the integrated module 100, so that the touch interaction type is required to be accurately positioned, namely, a preset point touch interaction positioning method is executed to perform corresponding touch interaction positioning. The other touch interaction type is a touch interaction type in a surface touch manner, for example, the touch manner of sliding a finger, the contact area of which is larger and affects the output signals of more than one light sensing sensor 120 but is different from the influence of the direct light, so that when the fact that the number of light sensing sensors with abrupt changes of the output signals is larger than one but smaller than a second preset threshold value is detected, the touch interaction in the surface touch manner of the display module is judged, meanwhile, the contact area of which is larger and generally spans across a plurality of integrated modules 100 to perform touch positioning, meaning that the touch positioning in a single integrated module 100 has no meaning to the display module, the outline of the touch surface is calculated only by the position and the output signal intensity of each light sensing sensor 120 with abrupt changes of the output signal (the outline of the corresponding touch surface can be obtained by matching with a antialiasing algorithm), and the touch point coordinates can be judged according to the outline of the touch surface, so that the touch interaction in a smoother surface touch manner is realized. Therefore, when the touch interaction in the form of surface touch is currently generated by the judging display module, a preset surface touch interaction positioning method is executed (the specific process is as follows, the outline of the touch surface is calculated according to the position and the output signal intensity of each photosensitive sensor with the output signal mutation currently, and the coordinates of the touch point are judged according to the outline of the touch surface) so as to perform corresponding touch interaction positioning.
The photosensitive touch interaction method provided by the embodiment of the application is applied to a display module comprising a plurality of integrated modules, and each integrated module is correspondingly provided with a plurality of pixel points and a photosensitive sensor, so that each integrated module can be used as a minimum resolution unit of the display module, and the following photosensitive touch interaction process is realized, namely, each photosensitive sensor of the display module is monitored by real-time output signals. And judging whether the display module currently performs touch interaction and corresponding touch interaction positioning according to the output signals of the light sensing sensors. The operating principle of the touch control device is that the pixel points on the integrated modules are used as detection light sources to emit light to the surface of a touch control object when the touch control object approaches to one integrated module, so that corresponding reflected light rays are formed, and meanwhile, the light-sensitive sensors of the corresponding integrated modules can generate electric signals based on the light intensity of the reflected light rays after detecting the reflected light rays through the light guide through holes, so that the position of the touch control object is determined, and real-time touch control interaction of the display module is realized. Therefore, the touch interaction of the display screen module is realized through the integrated packaging structure, the system structure of the display screen module can be effectively simplified, the display effect of the display screen is not affected, and the defect of touch delay is avoided.
In some examples, as shown in fig. 4, the above-mentioned preset touch interaction positioning method may specifically include the following steps:
And S11, sequentially lighting each pixel point on the integrated module where the light sensing sensor with abrupt change of the output signal is located, so as to acquire the light intensity signal output by the corresponding light sensing sensor when each pixel is lighted.
Specifically, when the touch outline of a touch is moved onto the integrated module 100, the main task of touch interaction positioning is to determine which pixel 110 on the integrated module 100 the outline is closer to, so as to determine the coordinates of the pixel 110 as the touch point coordinates. At this time, each pixel 110 on the integrated module 100 where the light sensor 120 with abrupt output signal changes is located may be first turned on in sequence to obtain the light intensity signal output by the corresponding light sensor 120 when each pixel 110 is turned on, that is, when each pixel 110 on the integrated module 100 is individually turned on, the light intensity signal output by the corresponding light sensor 120 is recorded once.
And S12, comparing and sequencing the corresponding light intensity signals when each pixel is lightened, and judging the coordinates of the pixel point with the strongest corresponding light intensity signal when the pixel is lightened as touch point coordinates.
Specifically, when the above method step "recording the light intensity signal output by the corresponding photosensitive sensor 120 when each pixel 110 is individually lighted" is performed, the corresponding light intensity signal when each pixel is lighted can be compared and ordered, and the coordinate of the pixel with the strongest corresponding light intensity signal when the pixel is lighted is determined as the coordinate of the touch point, because the touch contour of the touch is closest to the pixel 110, and the light intensity signal output by the corresponding photosensitive sensor 120 should be strongest when the pixel is individually lighted.
In some examples, as shown in fig. 5, the above-mentioned preset touch interactive positioning method may further include the following steps:
And S21, selecting four pixel points positioned at four peripheral corners on an integrated module where the light sensing sensor with abrupt output signal changes is positioned.
Specifically, when the touch outline of a touch is moved onto the integrated module 100, the main task of touch interaction positioning is to determine which pixel 110 on the integrated module 100 the outline is closer to, so as to determine the coordinates of the pixel 110 as the touch point coordinates. At this time, taking 16 pixels 110 on the integrated module 100 as an example, it may form a 4X4 matrix distribution, and during the point touch interaction positioning, four pixels on four corners of the periphery of the integrated module 100 where the light sensing sensor 120 with abrupt output signal changes are located are selected, i.e. four pixels on the upper left corner, the upper right corner, the lower left corner and the lower right corner on the 4X4 matrix distribution are selected.
And S22, time-sharing lighting four pixel points to acquire light intensity signals output by corresponding photosensitive sensors when each pixel point is lighted.
Specifically, after four pixels of the upper left corner, the upper right corner, the lower left corner and the lower right corner on the 4X4 matrix distribution are selected through the method steps, the four pixels can be lightened in a time-sharing manner, so that the light intensity signal output by the corresponding light sensing sensor when each pixel is lightened is obtained. That is, when the upper left corner pixel 110, the lower right corner pixel 110, and the lower left corner pixel 110 on the integrated module 100 are individually turned on, respectively, the light intensity signals output by the corresponding light sensing sensors 120 are recorded once when the lower left corner pixel 110, the lower right corner pixel 110, and the lower right corner pixel 110 are individually turned on, respectively, so as to obtain four light intensity signals corresponding to the four pixel points when they are individually turned on.
And S23, carrying out point deviation solving according to the light intensity signals corresponding to the four pixel points when the four pixel points are lightened in a time-sharing mode, and calculating to obtain corresponding touch point coordinates.
Specifically, after four light intensity signals corresponding to the four pixel points when the four pixel points are respectively lightened are obtained through the method steps, point deviation solving can be carried out according to the light intensity signals corresponding to the four pixel points when the four pixel points are lightened in a time sharing mode, and corresponding touch point coordinates are obtained through calculation. Specifically, the difference between the first light intensity signal and the fourth light intensity signal and the difference between the second light intensity signal and the third light intensity signal may be obtained respectively, and then the distance relation between the real touch point and the four pixels is determined according to the two differences (the closer the real touch point is to the pixel 110, the stronger the light intensity signal output by the corresponding light sensing sensor 120 is when the real touch point is independently lighted), so as to calculate and obtain the corresponding touch point coordinate.
In some examples, as shown in fig. 6, the above-mentioned preset touch interactive positioning method may further include the following steps:
and S31, carrying out refreshing operation of a preset pattern on an integrated module where the photosensitive sensor with abrupt change of the output signal is located, and acquiring a light intensity signal output by the corresponding photosensitive sensor when the preset pattern is refreshed.
Specifically, when the touch outline of a touch is moved onto the integrated module 100, the main task of touch interaction positioning is to determine which pixel 110 on the integrated module 100 the outline is closer to, so as to determine the coordinates of the pixel 110 as the touch point coordinates. At this time, a preset database may be established first, which is specifically established by performing a refresh operation of a preset pattern on each integrated module 100, and recording a light intensity signal output by a corresponding light sensing sensor when a touch point is at each pixel point during the refresh operation of the current integrated module 100, so as to establish the preset database. That is, when a certain preset pattern is displayed on the plurality of pixel points 110 of the integrated module 100, each pixel point 110 is touched in turn, and the light intensity signals output by the corresponding light sensing sensors are recorded, so that a one-to-one correspondence relationship between the pixel points 110 (specifically, the coordinates of the corresponding pixel points 110) and the light intensity signals (specifically, the magnitude values of the light intensity signals) is formed in a preset database. Therefore, when the preset point touch interactive positioning method is executed, the refreshing operation of the preset pattern can be performed on the integrated module where the photosensitive sensor with abrupt change of the output signal is located, and the light intensity signal output by the corresponding photosensitive sensor during refreshing of the preset pattern is obtained. The preset pattern is the same as the preset pattern for creating the preset database.
And S32, comparing the coordinates of the pixel points corresponding to the light intensity signals in a preset database to judge the coordinates as touch point coordinates.
Specifically, based on the above description, after the light intensity signals output by the corresponding light sensing sensors during refreshing of the preset pattern obtained through the above method steps, coordinates of pixel points corresponding to the light intensity signals can be obtained by comparison in the preset database, so as to determine the coordinates of the touch point.
In some examples, as shown in fig. 7, the above-mentioned preset touch interactive positioning method may further include the following steps:
Step S41, each pixel point on the integrated module where the photosensitive sensor with abrupt change of the output signal is located is lightened in a time-sharing mode, so that whether the light intensity signal output by the corresponding photosensitive sensor is larger than a third preset threshold value or not is judged when each pixel is lightened.
Specifically, when the touch outline of a touch is moved onto the integrated module 100, the main task of touch interaction positioning is to determine which pixel 110 on the integrated module 100 the outline is closer to, so as to determine the coordinates of the pixel 110 as the touch point coordinates. At this time, a third preset threshold may be set first, and when a certain pixel 110 is individually turned on, and the light intensity signal of the corresponding light sensing sensor 120 exceeds the third preset threshold, it is determined that a touch signal is present, and the coordinate of the pixel 110 is the touch point coordinate. Therefore, the third preset threshold value can be set according to the magnitude value of the light intensity signal output by the corresponding light sensing sensor when the pixel point where the touch point is located is independently lightened. In this way, when the preset touch interactive positioning method is executed, each pixel point on the integrated module where the photosensitive sensor with abrupt change of output signal is located can be lightened in a time-sharing manner to judge whether the light intensity signal output by the corresponding photosensitive sensor is greater than the third preset threshold value when each pixel is lightened
And S42, judging the coordinates of the pixel points, of which the light intensity signals output by the corresponding light sensing sensors are larger than a third preset threshold value when the pixels are lightened, as touch point coordinates.
Specifically, based on the above description, when a certain pixel 110 is individually lighted, and the light intensity signal of the corresponding light sensing sensor 120 exceeds a third preset threshold, it is determined that a touch signal is present, and the coordinates of the pixel 110 are touch point coordinates. Therefore, the coordinates of the pixel 110, where the light intensity signal output by the corresponding light sensing sensor when the pixel 110 is lighted is greater than the third preset threshold, may be determined as the touch point coordinates.
The preset touch interaction positioning method in the above example can realize further accurate positioning in the integrated module 110 to perform corresponding touch interaction positioning, and a person skilled in the art may select to use the touch interaction positioning for the display module according to the embodiment of the present application.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the application, and yet fall within the scope of the application.
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Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375057.4A CN114816114B (en) | 2022-04-11 | 2022-04-11 | A photosensitive touch interaction method |
| PCT/CN2023/078359 WO2023197760A1 (en) | 2022-04-11 | 2023-02-27 | Integrated module, display module, and photosensitive touch-control interaction system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210375057.4A CN114816114B (en) | 2022-04-11 | 2022-04-11 | A photosensitive touch interaction method |
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| CN114816114A CN114816114A (en) | 2022-07-29 |
| CN114816114B true CN114816114B (en) | 2025-04-08 |
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