CN101719040A - Touch panel testing device - Google Patents

Abstract

The invention provides a touch panel testing device, at least comprising: a touch panel; the touch control induction lines are arranged on the touch control panel; the touch control system comprises a plurality of test points, a plurality of touch control induction lines and a plurality of touch control sensing lines, wherein each test point is electrically connected to one or more touch control induction lines; and the current source is electrically connected to one of the plurality of test points, wherein one or more touch induction lines connected with the test points divide the touch panel into a plurality of areas, and when any area in the plurality of areas is touched and pressed, the current source acquires induction current flowing through the test points. By adopting the touch panel testing device, when the panel is touched, whether the induction assembly in the touch panel works normally can be quickly diagnosed by utilizing the numerical value of the induction current, and the raw material loss generated in the subsequent manufacturing process due to the abnormal work of the induction assembly is avoided.

Description

A touch panel testing device

technical field

The invention relates to a touch panel testing technology, in particular to a testing device for an in-cell touch panel.

Background technique

Currently, with the rapid development of science and technology, more and more electronic devices adopt touch-type human-computer interaction interfaces to facilitate users to flexibly select corresponding application functions. For example, in daily life, touch operation behavior has deeply penetrated into many application fields such as mobile phones, navigation devices, and portable handheld game consoles. With the enlargement of touch panel size, this touch interface design can also be applied to retail stores, ticket vending machines, information kiosks, education and training fields, etc.

In the prior art, from the point of view of touch sensing design, touch panels can be divided into two types: traditional on-cell touch panels and new in-cell touch panels. kind. Different from the plug-in touch panel, the in-cell touch panel generally embeds the sensing components on the array substrate of the touch panel, so that the touch function can be directly integrated into the panel manufacturing process without adding another touch layer. control glass substrate.

However, for the in-cell touch panel, how to accurately judge the working status of the sensing components in the panel is a subject for technicians. This is because, once the induction component on the panel fails to work normally, it will cause loss of raw materials to the subsequent manufacturing process and increase the manufacturing cost.

Contents of the invention

Aiming at the above-mentioned defects in the prior art of touch panel testing, the present invention provides a novel touch panel testing device. When the panel is pressed, the value of the induced current can be used to quickly diagnose whether the sensing components in the touch panel are working normally, and avoid the loss of raw materials in the subsequent process due to the abnormal operation of the sensing components.

According to one aspect of the present invention, a touch panel testing device is provided, at least including: a touch panel; a plurality of touch sensing lines arranged on the touch panel; a plurality of test points, each test point electrically connected to one or more of the touch sensing lines; and a current source electrically connected to one of the plurality of test points, wherein the one or more touch sensing lines connected to the test points divide the touch panel into A plurality of regions, when any one of the plurality of regions is touched, the current source obtains an induced current flowing through the test point.

Preferably, the touch panel is an in-cell touch panel.

Preferably, any two touch sensing lines in the plurality of touch sensing lines are parallel to each other.

Preferably, the touch sensing lines of each of the multiple regions are electrically connected to a common node.

Preferably, according to an embodiment of the present invention, the number of touch sensing lines located in each of the multiple regions is the same. According to another embodiment of the present invention, the number of touch sensing lines located in different areas of the plurality of areas is different, and the value of the induced current is proportional to the number of touch sensing lines.

According to another aspect of the present invention, a touch panel testing device is provided, at least including: a touch panel with a plurality of touch sensing lines, one or more of the touch sensing lines divide the touch panel into multiple a region; a plurality of test points, each test point is electrically connected to one or more touch sensing lines in any region of the plurality of regions, and a current source is electrically connected to one of the plurality of test points, wherein , when any one of the multiple areas is touched, the current source captures an induced current flowing through the test point.

Preferably, the touch panel is an in-cell touch panel.

Preferably, any two touch sensing lines in the plurality of touch sensing lines are parallel to each other.

Preferably, the touch sensing lines of each of the multiple regions are electrically connected to a common node.

Preferably, according to an embodiment of the present invention, the number of touch sensing lines located in each of the multiple regions is the same. According to another embodiment of the present invention, the number of touch sensing lines located in different areas of the plurality of areas is different, and the value of the induced current is proportional to the number of touch sensing lines.

With the touch panel testing device of the present invention, when the panel is touched, the numerical value of the induced current can be used to quickly diagnose whether the sensing components in the touch panel are working normally, and avoid the occurrence of abnormalities in the subsequent process due to the abnormal operation of the sensing components. loss of raw materials.

Description of drawings

Readers will have a clearer understanding of various aspects of the present invention after reading the detailed description of the present invention with reference to the accompanying drawings. in,

FIG. 1 shows a schematic structural diagram of a panel cell segment test performed by a touch panel testing device according to the present invention.

Detailed ways

The specific implementation manners of the present invention will be described in further detail below with reference to the accompanying drawings. Hereinafter, the same reference numerals denote the same parts or elements.

FIG. 1 shows a schematic structural diagram of a panel cell segment test performed by a touch panel testing device according to the present invention. As mentioned above, the in-cell touch panel generally integrates the touch function directly into the manufacturing process of the panel, without adding a layer of touch glass substrate on the array substrate.

Referring to FIG. 1 , the touch panel testing device includes a touch panel 11 , a plurality of test points 13 , a plurality of touch sensing lines 15 and a current source (not shown in the figure). Wherein, all the touch sensing lines are parallel to each other. The touch panel 11 is divided into multiple regions according to one or more of the touch sensing lines 15 , for example, region 100 , region 102 and region 104 in FIG. 1 . And, the touch sensing lines in each area are connected to the test points. Those skilled in the art should understand that although FIG. 1 schematically depicts a touch panel testing device including a touch panel, a test point, a touch sensing line and a current source, the present invention is not limited thereto. For example, a touch panel The control panel testing device may also include a touch panel with a plurality of touch sensing lines, a test point and a current source. That is to say, the touch panel 11 and the touch sensing lines 15 can exist independently, or they can be combined into a touch panel with touch sensing lines.

In FIG. 1 , a touch sensing line 15 in the area 100 is taken as an example, which corresponds to a column on the touch panel. When the position of the row is pressed, an induced current is generated on the touch sensing line, and the current source is connected in series to the test point 13 to determine whether the sensing component is working normally. In addition, it may be assumed that when the entire area 100 is touched, when the current source is electrically connected to the test point 13 , the value of the induced current will increase. Specifically, the value of the induced current is related to the number of touch sensing lines in the area 100. After knowing the number of touch sensing lines in the area 100 and the induced current generated by each touch sensing line, you can According to the current value flowing through the current source, it is judged whether the sensing component is working normally.

Preferably, all touch sensing lines can be evenly divided into each area of the touch panel, and at this time, the number of touch sensing lines in each area of the touch panel is the same. According to another embodiment of the present invention, it is also possible to set different numbers of touch sensing lines in different areas of the touch panel. In this arrangement, the value of the induced current flowing through the current source is only related to the value of the touch sensing lines. It is related to the quantity, but has nothing to do with the specific regional location. By calculating the value of the induced current and the induced current generated by each touch sensing line, it is determined whether the sensing components in the corresponding area are in a normal working state.

With the touch panel testing device of the present invention, when a certain position of the panel is pressed, the numerical value of the induced current can be used to quickly diagnose whether the sensing components in the touch panel are working normally, and avoid failures due to abnormal operation of the sensing components. The loss of raw materials generated in the subsequent process.

Hereinbefore, specific embodiments of the present invention have been described with reference to the accompanying drawings. However, those skilled in the art can understand that without departing from the spirit and scope of the present invention, various changes and substitutions can be made to the specific embodiments of the present invention. These changes and substitutions all fall within the scope defined by the claims of the present invention.

Claims (8)

1. A touch panel testing device, characterized in that, said testing device at least comprises: a touch panel; A plurality of touch sensing lines are arranged on the touch panel; a plurality of test points, each test point is electrically connected to one or more of the touch sensing lines; and a current source electrically connected to one of the plurality of test points, Wherein, one or more touch sensing lines connected to the test points divide the touch panel into a plurality of regions, and when any region in the plurality of regions is touched, the current source Obtain the sense current flowing through the test point. 2. A touch panel testing device, characterized in that the testing device at least comprises: A touch panel having a plurality of touch sensing lines, one or more of the touch sensing lines dividing the touch panel into a plurality of regions; a plurality of test points, each test point is electrically connected to one or more touch sensing lines in any region of the plurality of regions, and a current source electrically connected to one of the plurality of test points, Wherein, when any one of the plurality of regions is touched, the current source acquires an induced current flowing through the test point. 3. The test device according to claim 1 or 2, wherein the touch panel is an in-cell touch panel. 4. The testing device according to claim 1 or 2, wherein any two touch sensing lines in the plurality of touch sensing lines are parallel to each other. 5. The testing device according to claim 1 or 2, wherein the touch sensing lines of each of the plurality of regions are electrically connected to a common node. 6. The testing device according to claim 1 or 2, wherein the number of touch sensing lines located in each of the plurality of regions is the same. 7. The testing device according to claim 1 or 2, wherein the number of touch sensing lines located in different areas of the plurality of areas is different. 8. The testing device according to claim 7, wherein the value of the induced current is proportional to the number of the touch sensing lines.

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