CN104461802B - A kind of method of test touch screen, its test system and stylus - Google Patents
A kind of method of test touch screen, its test system and stylus Download PDFInfo
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- CN104461802B CN104461802B CN201410720092.0A CN201410720092A CN104461802B CN 104461802 B CN104461802 B CN 104461802B CN 201410720092 A CN201410720092 A CN 201410720092A CN 104461802 B CN104461802 B CN 104461802B
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Abstract
The invention discloses a kind of method of test touch screen, its test system and stylus, at least one touch point on touch-screen is touched with least one touch area by using the touch adjustable stylus of area；For each touch point, when touch-screen has touch-control sensing signal output, the sensed position that touch-screen is sensed is confirmed according to touch-control sensing signal, further according to the comparison between the error and preset value between sensed position and the physical location of touch point, the minimum touch area that touch point is supported is confirmed；The minimum area that touches of last each touch point further according to acquisition determines the minimum touch area that touch-screen is supported.The above method is adjustable due to the touch area of the stylus of use, therefore tested by adjusting different touch areas, the minimum touch area that touch-screen is supported can be tested out with accurate, so as to be made that test foundation for the testing standard of touch-screen industry.
Description
Technical Field
The present invention relates to the field of touch technologies, and in particular, to a method for testing a touch screen, a test system thereof, and a stylus.
Background
With the rapid development of display technology, Touch Screen panels (Touch screens) have gradually spread throughout the lives of people. Therefore, as the application range of the touch screen is wider and wider, the test standard of the touch screen also needs to be optimized and determined step by step so as to perform better test and specification.
It is known that the minimum touch area supported by different manufacturers of touch screens, especially the capacitive touch screen, is different. The current common method is to directly use the design length between the touch terminals to determine the minimum touch area supported by the touch screen, as shown in fig. 1, which is a schematic structural diagram of the touch terminals on the touch screen, there are a transmitting terminal 2 and a receiving terminal 3 on the touch screen 1, typically, the transmitting terminal 2 is a metal wire or a transparent electrode distributed equidistantly in the transverse direction, the receiving terminal 3 is a metal wire or a transparent electrode distributed equidistantly in the longitudinal direction, the position where the receiving terminal 3 overlaps the transmitting terminal 2 is a touch terminal, and the distance between the touch terminals is typically defined as a touch space S, typically, the touch terminals are equidistant in the longitudinal direction and the transverse direction. The touch area of the smallest finger that the touch screen can support is generally measured by the actual physical touch separation.
However, in practice, the minimum touch area supported by the touch screen is related to the algorithm of the touch chip besides the pitch of the touch terminals, and generally, if the pitch of the touch terminals is large and is larger than the width of the touch finger, it is considered that accurate touch cannot be supported, but actually, due to the improvement of the current chip algorithm technology, touch can be realized even if the pitch of the touch terminals exceeds the minimum pitch, as shown in fig. 1, although a finger 4 touches a blank area in the middle of the touch terminal, an induction signal is transmitted to the touch chip through the electric field induction of four touch terminals at the periphery, and the touch chip can also judge the position of the touch finger through a certain algorithm.
However, at present, no particularly precise test method and device exist for how large fingers can be touched at the minimum of the touch screen, and the test is only carried out according to the touch distance of the touch screen or by the sense of different fingers of people. But the use of finger testing is neither accurate nor standardized to industry standards. Moreover, with the development of touch technology, a passive touch pen appears, for example, a common pencil and the like can realize a touch function, and it is obvious that a test for determining the minimum touch area supported by the touch screen through the touch feeling of a finger is not accurate and reasonable enough.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method for testing a touch screen, a testing system thereof, and a stylus pen, so as to provide a method and related testing apparatus capable of accurately testing a minimum touch area supported by a touch screen.
Therefore, a method for testing a touch screen provided by the embodiment of the present invention includes:
the method comprises the following steps of touching at least one touch point on the touch screen by at least one touch area through a touch pen with an adjustable touch area;
for each touch point, when a touch sensing signal is output from the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
and selecting the value with the largest value from the acquired minimum touch areas supported by each touch point as the minimum touch area supported by the touch screen.
Preferably, in a specific implementation, the method provided in the embodiment of the present invention is to select a minimum touch area of the stylus for testing at first for each touch point, and specifically includes:
controlling the stylus to touch the touch point on the touch screen with a minimum touch area;
confirming whether a touch sensing signal is output from the touch screen;
if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen;
confirming the sensing position sensed by the touch screen according to the touch sensing signal;
confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not;
if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point;
if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the method provided in the embodiment of the present invention is to select a maximum touch area of the stylus for testing at first for each touch point, and specifically includes:
controlling the stylus to touch the touch point on the touch screen with a maximum touch area;
confirming whether a touch sensing signal is output from the touch screen;
if a touch sensing signal is output, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not;
if so, gradually reducing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; and recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the method provided in an embodiment of the present invention is to select any touch area of the stylus, except for a minimum touch area and a maximum touch area, for each touch point, and start a test, specifically:
controlling the touch pen to touch the touch point on the touch screen by the selected touch area;
confirming whether a touch sensing signal is output from the touch screen;
if the touch screen is touched by the selected touch area and no touch sensing signal is output, gradually increasing the touch area of the touch stylus until the touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
if a touch sensing signal is output when the touch screen is touched by the selected touch area, confirming a sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, gradually reducing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; recording the touch area corresponding to the error which is smaller than the preset value and is closest to the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in order to improve the testing accuracy, the method provided by the embodiment of the invention uses a touch pen with an adjustable touch area to touch a plurality of touch points on the touch screen, and the touch points are uniformly distributed on the touch screen.
Correspondingly, the embodiment of the invention also provides a test system for testing the touch screen, which comprises: the device comprises an object stage for bearing the touch screen, a mobile control device, a touch pen with adjustable touch area and a testing device connected with the touch screen through an external interface; wherein,
the mobile control device is used for controlling the touch pen with the adjustable touch area to touch at least one touch point on the touch screen by at least one touch area;
the testing device is used for confirming the sensing position sensed by the touch screen according to the touch sensing signal when the touch sensing signal is output by the touch screen; and according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Specifically, in practical implementation, when the minimum touch area of the stylus is selected to start testing, the testing device is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen; if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Specifically, in a specific implementation, when the maximum touch area of the stylus is selected to start a test, the test system provided in the embodiment of the present invention is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen; if a touch sensing signal is output, confirming a sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, gradually reducing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; and recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point.
Specifically, in a specific implementation, when any touch area of the stylus except the minimum touch area and the maximum touch area is selected to start a test, the test system provided in the embodiment of the present invention is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen;
if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
if a touch sensing signal is output, confirming a sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, gradually reducing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; recording the touch area corresponding to the error which is smaller than the preset value and is closest to the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the test system provided in the embodiment of the present invention further includes:
and the computing device is used for selecting the value with the largest value from the acquired minimum touch areas supported by each touch point as the minimum touch area supported by the touch screen.
Preferably, in order to improve the testing accuracy, in the testing system provided in the embodiment of the present invention, the movement control device includes: the robot comprises a mechanical arm and a drive control device connected with the mechanical arm; wherein,
the mechanical arm is used for fixing the touch pen;
and the drive control device is used for controlling the movement of the mechanical arm.
Preferably, for convenience of implementation, in the test system provided in the embodiment of the present invention, the stylus includes: the central shaft and along perpendicular to the direction of center pin is overlapped in proper order and is located a plurality of sleeves on the center pin, and the next-door neighbour the sleeve of center pin with between the center pin to and can follow under the effect of the external force of predetermineeing the size between each adjacent sleeve the extending direction relative movement of center pin.
Preferably, for convenience of implementation, in the test system provided in the embodiment of the present invention, a contact area between the central axis of the stylus pen and the touch screen, the central axis and at least one sleeve sequentially located outside the central axis, is a regular polygon or a circle.
Preferably, for convenience of implementation, in the testing system provided by the embodiment of the present invention, the wall thickness of each of the sleeves is equal.
Correspondingly, an embodiment of the present invention further provides a stylus, including: the central shaft and along perpendicular to the direction of center pin is overlapped in proper order and is located a plurality of sleeves on the center pin, and the next-door neighbour the sleeve of center pin with between the center pin to and can follow under the effect of the external force of predetermineeing the size between each adjacent sleeve the extending direction relative movement of center pin.
Preferably, for convenience of implementation, in the above stylus provided in the embodiment of the present invention, a contact area between the central axis of the stylus and the touch screen, the central axis and at least one sleeve sequentially located outside the central axis, is a regular polygon or a circle.
Preferably, for convenience of implementation, in the stylus pen provided in the embodiment of the present invention, the wall thickness of each of the sleeves is equal.
Preferably, for convenience of implementation, in the stylus pen provided in the embodiment of the present invention, a wall thickness of each of the sleeves is 0.1mm to 1 mm.
According to the method for testing the touch screen, the testing system and the touch pen provided by the embodiment of the invention, the touch pen with adjustable touch area is adopted to touch at least one touch point on the touch screen with at least one touch area; for each touch point, when a touch sensing signal is output on the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal, and then confirming the minimum touch area supported by the touch point according to comparison between an error between the sensing position and an actual position of the touch point and a preset value; and finally, determining the minimum touch area supported by the touch screen according to the acquired minimum touch area of each touch point. According to the method, the touch area of the adopted touch pen is adjustable, so that the minimum touch area supported by the touch screen can be accurately tested by adjusting different touch areas for testing, and a test basis is made for the test standard of the touch screen industry.
Drawings
FIG. 1 is a schematic diagram of a touch terminal on a touch screen;
FIG. 2 is a flowchart illustrating a method for testing a touch screen according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a test performed on each touch point of a touch screen according to an embodiment of the present invention;
fig. 4 is a second schematic flow chart illustrating a test performed on each touch point of the touch screen according to the embodiment of the invention;
fig. 5 is a third schematic flowchart of a test process performed on each touch point of the touch screen according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a test system for testing a touch screen according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a stylus according to an embodiment of the present invention;
fig. 8a and fig. 8b are schematic structural diagrams of a stylus pen according to an embodiment of the invention under different touch areas, respectively;
fig. 9a and 9b are schematic top views of a stylus according to an embodiment of the invention from a touch end.
Detailed Description
The following describes in detail specific embodiments of a method for testing a touch screen, a testing system thereof, and a stylus pen according to embodiments of the present invention with reference to the accompanying drawings.
The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
The method for testing the touch screen provided by the embodiment of the invention, as shown in fig. 2, can include the following steps:
s201, touching at least one touch point on the touch screen with at least one touch area by using a touch pen with an adjustable touch area;
s202, aiming at each touch point, when a touch sensing signal is output from the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
s203, according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
and S204, selecting the value with the largest value from the acquired minimum touch areas supported by each touch point as the minimum touch area supported by the touch screen.
According to the method for testing the touch screen, provided by the embodiment of the invention, the touch pen with the adjustable touch area is adopted to touch at least one touch point on the touch screen with at least one touch area; for each touch point, when a touch sensing signal is output on the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal, and then confirming the minimum touch area supported by the touch point according to comparison between an error between the sensing position and an actual position of the touch point and a preset value; and finally, determining the minimum touch area supported by the touch screen according to the acquired minimum touch area of each touch point. According to the method, the touch area of the adopted touch pen is adjustable, so that the minimum touch area supported by the touch screen can be accurately tested by adjusting different touch areas for testing, and a test basis is made for the test standard of the touch screen industry.
It should be noted that, in order to reduce the test error, when the touch point on the touch screen is touched by the stylus pen, it is to be ensured that the center point of each touch area is aligned with the touch point as much as possible.
Preferably, in a specific implementation, the method provided in the embodiment of the present invention may select a minimum touch area of the stylus for each touch point to start the test, as shown in fig. 3, and the specific steps include:
s301, controlling a touch pen to touch a touch point on the touch screen in a minimum touch area;
s302, confirming whether a touch sensing signal is output from the touch screen;
s303, if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen;
s304, confirming the sensing position sensed by the touch screen according to the touch sensing signal;
s305, confirming whether the error between the sensing position and the actual position of the touch point is smaller than a preset value;
if so, step S306 is started, otherwise, step S307 is started,
s306, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point;
s307, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than a preset value;
and S308, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the method provided in the embodiment of the present invention may select a maximum touch area of the stylus for each touch point to start the test, as shown in fig. 4, and the specific steps include:
s401, controlling a touch pen to touch a touch point on the touch screen in the largest touch area;
s402, determining whether a touch sensing signal is output from the touch screen;
s403, if a touch sensing signal is output, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
s404, confirming whether the error between the sensing position and the actual position of the touch point is smaller than a preset value;
s405, if the error between the sensing position and the actual position of the touch point is smaller than a preset value, gradually reducing the touch area of the touch stylus until the error between the sensing position and the actual position sensed by the touch screen is larger than or equal to the preset value;
s406, the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value is recorded as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the method provided in the embodiment of the present invention may select any touch area of the stylus except for the minimum touch area and the maximum touch area for each touch point to start the test, as shown in fig. 5, and the specific steps include:
s501, controlling a touch pen to touch a touch point on the touch screen in a selected touch area;
s502, confirming whether a touch sensing signal is output from the touch screen;
if the touch screen with the selected touch area has no touch sensing signal output, step S503 is performed, if the touch screen with the selected touch area has touch sensing signal output, step S508 is performed,
s503, gradually increasing the touch area of the touch stylus until a touch sensing signal is output from the touch screen;
s504, confirming the sensing position sensed by the touch screen according to the touch sensing signal;
s505, confirming whether the error between the sensing position and the actual position of the touch point is smaller than a preset value;
if so, step S506 is started, otherwise, step S507 is started,
s506, if the error between the sensing position and the actual position of the touch point is smaller than a preset value, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point;
s507, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than a preset value; recording the corresponding touch area when the error is smaller than a preset value as the minimum touch area supported by the touch point;
s508, if a touch sensing signal is output when the touch screen is touched by the selected touch area, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
s509, confirming whether an error between the sensing position and the actual position of the touch point is smaller than a preset value;
if so, the step S5010 is started, otherwise, the step S5011 is started,
s5010, gradually reducing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is larger than or equal to a preset value; recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point;
s5011, gradually increasing the touch area of the touch stylus until the error between the sensing position sensed by the touch screen and the actual position is smaller than a preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in order to improve the testing accuracy, the method provided by the embodiment of the invention uses the stylus with adjustable touch area to touch the plurality of touch points on the touch screen, and the plurality of touch points are uniformly distributed on the touch screen.
Specifically, 6 points, 9 points or more may be selected in the implementation, and are not limited herein.
Based on the same inventive concept, an embodiment of the present invention further provides a test system for testing a touch screen, as shown in fig. 6, including: the test system comprises an object stage 01 for bearing the touch screen 04, a mobile control device 02, a touch pen 03 with adjustable touch area and a test device 05 connected with the touch screen 04 through an external interface; wherein,
a movement control device 02, configured to control the touch pen 03 with an adjustable touch area to touch at least one touch point on the touch screen 04 with at least one touch area;
the testing device 05 is used for confirming the sensing position sensed by the touch screen according to the touch sensing signal when the touch sensing signal is output by the touch screen 04; and according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
The test system provided by the embodiment of the invention comprises: the device comprises an object stage for bearing the touch screen, a mobile control device, a touch pen with adjustable touch area and a testing device connected with the touch screen through an external interface; the mobile control device can control the touch pen with the adjustable touch area to touch at least one touch point on the touch screen with at least one touch area; the testing device can confirm the sensing position sensed by the touch screen according to the touch sensing signal when the touch sensing signal is output by the touch screen; and according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point. Therefore, the test system can accurately test the minimum touch area supported by the touch point by testing different touch areas of the touch pen.
Specifically, in practical implementation, when the minimum touch area of the stylus is selected to start testing, the testing system provided in the embodiment of the present invention is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen; if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the induction position and the actual position of the touch point is smaller than a preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than a preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Specifically, in practical implementation, when the maximum touch area of the stylus is selected to start testing, the testing system provided in the embodiment of the present invention is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen; if the touch sensing signal is output, confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the induction position and the actual position of the touch point is smaller than a preset value or not; if so, gradually reducing the touch area of the touch stylus until the error between the sensed position and the actual position sensed by the touch screen is greater than or equal to a preset value; and recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point.
Specifically, in practical implementation, when any touch area of the stylus except the minimum touch area and the maximum touch area is selected to start the test, the test device is specifically configured to:
confirming whether a touch sensing signal is output from the touch screen;
if no touch sensing signal is output, gradually increasing the touch area of the touch stylus until a touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the induction position and the actual position of the touch point is smaller than a preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus again until the error between the sensing position sensed by the touch screen and the actual position is smaller than a preset value; recording the corresponding touch area when the error is smaller than a preset value as the minimum touch area supported by the touch point;
if the touch sensing signal is output, confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the induction position and the actual position of the touch point is smaller than a preset value or not; if so, gradually reducing the touch area of the touch stylus until the error between the sensed position and the actual position sensed by the touch screen is greater than or equal to a preset value; recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch stylus until the error between the sensed position and the actual position sensed by the touch screen is smaller than a preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
Preferably, in a specific implementation, the test system provided in the embodiment of the present invention further includes:
and the computing device is used for selecting the value with the largest value from the acquired minimum touch areas supported by each touch point as the minimum touch area supported by the touch screen.
Preferably, in order to improve the testing accuracy, in the testing system provided in the embodiment of the present invention, as shown in fig. 6, the movement control device 02 includes: a robot 021, and a drive control device 022 connected to the robot 021; wherein,
a mechanical arm 021 for fixing the stylus 03;
and a drive control device 022 for controlling the movement of the robot 021. Therefore, the position of the touch pen is controlled by the mechanical arm, and the movement position of the mechanical arm is controlled by the driving control device, so that the change of the center position of the touch pen caused by the change of the touch area of the touch pen when the same touch point is tested can be avoided.
Preferably, for convenience of implementation, in the test system provided in the embodiment of the present invention, as shown in fig. 7, the stylus 03 includes: the central shaft 031 and the plurality of sleeves 032 sequentially sleeved on the central shaft 031 along a direction perpendicular to the central shaft, and the sleeves 032 adjacent to the central shaft and the central shaft 031 and the adjacent sleeves 032 can move relatively along the extending direction of the central shaft 031 under the action of external force with a predetermined magnitude. Therefore, the touch control pen can ensure that the central shaft and the sleeves can relatively move along the extension direction of the central shaft only under the action of external force with a preset magnitude, and the central shaft and the sleeves can keep relatively static when no external force acts.
Here, the center axis of each sleeve is the same as the center axis of the center shaft.
Thus, when a minimum touch area is required during a test, the stylus pen is extended only through the central shaft 031 to contact the touch screen as shown in fig. 8a under the action of an external force of a predetermined magnitude, when a slightly larger touch area is required, the number of the sleeves 032 contacting the touch screen is sequentially increased from inside to outside as shown in fig. 8b, and when a maximum touch area is required, the central shaft 031 and all the sleeves 032 contact the touch screen 04 as shown in fig. 7. The touch pen is set to be a telescopic coaxial sleeve structure, and the sleeves and the central shaft are coaxial in the test process, so that the position of the touch pen can be ensured to be unchanged, the touch area can be increased or reduced only by increasing or reducing the contact quantity of the sleeves and the touch screen, and errors caused by the position change of the touch pen in the test process are avoided.
Preferably, for convenience of implementation, in the test system according to the embodiment of the present invention, as shown in fig. 9a and 9b, a central axis 031 and a central axis 031 of the stylus 03 and a contact area between the at least one sleeve 032 and the touch screen, which are sequentially located outside the central axis, are regular polygons or circles.
Further, in the test system provided in the embodiment of the present invention, it is preferable that the central axis of the stylus pen and the central axis and the contact surface between the touch screen and at least one sleeve sequentially located outside the central axis are circular.
Further, in the above test system provided by the embodiment of the present invention, the wall thickness of each sleeve is equal to that of each sleeve. Specifically, the wall thickness of each sleeve can be controlled between 0.1mm and 1mm
Based on the same inventive concept, an embodiment of the present invention further provides a touch pen, as shown in fig. 7, including: the central shaft 031 and along the direction perpendicular to the central shaft a plurality of sleeves 032 are sleeved on the central shaft 031 in proper order, and between the sleeve 032 next to the central shaft and the central shaft 031, and between each adjacent sleeve 032 can move relatively along the extending direction of the central shaft 031 under the action of external force of a predetermined magnitude.
According to the touch pen provided by the embodiment of the invention, the touch is set to be the telescopic coaxial sleeve structure, and the touch area of the touch pen is adjusted by utilizing the relative movement between the sleeves and between the sleeve and the central shaft, so that the touch pen with a simple structure and an adjustable touch area is realized.
Further, in the stylus pen provided in the embodiment of the present invention, a central axis of each sleeve is the same as a central axis of the central shaft.
Preferably, for convenience of implementation, in the above-mentioned stylus pen provided in the embodiment of the present invention, as shown in fig. 9a and 9b, a central axis 031 and a central axis 031 of the stylus pen 03 and a contact area between the at least one sleeve 032 sequentially located outside the central axis and the touch screen are regular polygons or circles.
Further, in the above stylus provided in the embodiment of the present invention, it is preferable that the central axis and the central axis of the stylus and the contact surface between the at least one sleeve and the touch screen, which are sequentially located outside the central axis, are circular.
Preferably, for convenience of implementation, in the stylus pen provided in the embodiment of the present invention, the wall thickness of each sleeve is equal.
Preferably, for convenience of implementation, in the stylus pen provided in the embodiment of the present invention, a wall thickness of each sleeve is 0.1mm to 1 mm.
According to the method for testing the touch screen, the testing system and the touch pen provided by the embodiment of the invention, the touch pen with adjustable touch area is adopted to touch at least one touch point on the touch screen with at least one touch area; for each touch point, when a touch sensing signal is output on the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal, and then confirming the minimum touch area supported by the touch point according to comparison between an error between the sensing position and an actual position of the touch point and a preset value; and finally, determining the minimum touch area supported by the touch screen according to the acquired minimum touch area of each touch point. According to the method, the touch area of the adopted touch pen is adjustable, so that the minimum touch area supported by the touch screen can be accurately tested by adjusting different touch areas for testing, and a test basis is made for the test standard of the touch screen industry.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A method of testing a touch screen, comprising:
the method comprises the following steps of touching at least one touch point on the touch screen by at least one touch area through a touch pen with an adjustable touch area;
for each touch point, when a touch sensing signal is output from the touch screen, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
according to the comparison between the error between the sensing position and the actual position of the touch point and a preset value, recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
and selecting the value with the largest value from the acquired minimum touch areas supported by each touch point as the minimum touch area supported by the touch screen.
2. The method of claim 1, wherein for each touch point, a minimum touch area of the stylus is selected first to start testing, specifically:
controlling the stylus to touch the touch point on the touch screen with a minimum touch area;
confirming whether a touch sensing signal is output from the touch screen;
if no touch sensing signal is output, gradually increasing the touch area of the touch pen until a touch sensing signal is output on the touch screen;
confirming the sensing position sensed by the touch screen according to the touch sensing signal;
confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not;
if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point;
if not, gradually increasing the touch area of the touch pen again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
3. The method of claim 1, wherein for each touch point, a maximum touch area of the stylus is first selected to start testing, specifically:
controlling the stylus to touch the touch point on the touch screen with a maximum touch area;
confirming whether a touch sensing signal is output from the touch screen;
if a touch sensing signal is output, confirming a sensing position sensed by the touch screen according to the touch sensing signal;
confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not;
if so, gradually reducing the touch area of the touch pen until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; and recording the corresponding touch area when the error is smaller than the preset value and the error is closest to the preset value as the minimum touch area supported by the touch point.
4. The method of claim 1, wherein for each touch point, any touch area of the stylus other than a minimum touch area and a maximum touch area is selected first to start testing, specifically:
controlling the touch pen to touch the touch point on the touch screen by the selected touch area;
confirming whether a touch sensing signal is output from the touch screen;
if the touch screen is touched by the selected touch area and no touch sensing signal is output, gradually increasing the touch area of the touch pen until the touch sensing signal is output on the touch screen; confirming the sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, recording the touch area corresponding to the error smaller than the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch pen again until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point;
if a touch sensing signal is output when the touch screen is touched by the selected touch area, confirming a sensing position sensed by the touch screen according to the touch sensing signal; confirming whether the error between the sensing position and the actual position of the touch point is smaller than the preset value or not; if so, gradually reducing the touch area of the touch pen until the error between the sensing position sensed by the touch screen and the actual position is greater than or equal to the preset value; recording the touch area corresponding to the error which is smaller than the preset value and is closest to the preset value as the minimum touch area supported by the touch point; if not, gradually increasing the touch area of the touch pen until the error between the sensing position sensed by the touch screen and the actual position is smaller than the preset value; and recording the corresponding touch area when the error is smaller than the preset value as the minimum touch area supported by the touch point.
5. The method according to any one of claims 1-4, wherein a stylus with an adjustable touch area is used to touch a plurality of touch points on the touch screen, and the touch points are uniformly distributed on the touch screen.
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| CN106199272A (en) * | 2016-07-15 | 2016-12-07 | 京东方科技集团股份有限公司 | Felt pen, touching test device and touching test method |
| CN108008857A (en) * | 2017-12-04 | 2018-05-08 | 飞依诺科技(苏州)有限公司 | A kind of method and apparatus of moving focal point for touch-screen |
| CN108170565A (en) * | 2017-12-18 | 2018-06-15 | 上海与德科技有限公司 | Testing system for capacitive touch screen |
| CN112284784B (en) * | 2020-10-20 | 2023-06-23 | 展讯通信（上海）有限公司 | Automatic touch screen clicking equipment, testing system comprising same and testing method |
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| WO2001048589A1 (en) * | 1999-12-28 | 2001-07-05 | Fujitsu Limited | Pen sensor coordinate narrowing method and device therefor |
| JP2006039686A (en) * | 2004-07-22 | 2006-02-09 | Pioneer Electronic Corp | Touch panel device, touch region detecting method, and touch region detecting program |
| CN102339123B (en) * | 2010-07-14 | 2014-10-29 | Tcl集团股份有限公司 | Method for controlling vibration according to contact area |
| CN102736759B (en) * | 2011-04-08 | 2017-02-15 | 富泰华工业（深圳）有限公司 | Touch screen and control method thereof |
| CN102662532B (en) * | 2012-03-29 | 2016-03-30 | 广东威创视讯科技股份有限公司 | Multiple point touching coordinate location method and device thereof |
| CN204203950U (en) * | 2014-12-01 | 2015-03-11 | 京东方科技集团股份有限公司 | A kind of test macro of test touch screen and pointer |
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