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Method and device for detecting precision of touch screen

A detection method and touch screen technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve the problems of poor accuracy of detection results, etc.

Active Publication Date: 2016-09-28
QINGDAO GOERTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a method and device for detecting the accuracy of a touch screen to solve the problem of poor accuracy of the accuracy detection results of the touch screen in the prior art

Method used

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  • Method and device for detecting precision of touch screen
  • Method and device for detecting precision of touch screen
  • Method and device for detecting precision of touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 The flow chart of the detection method for the accuracy of the touch screen provided by this embodiment, such as figure 1 as shown, figure 1 The methods in include:

[0056] S110. Select a plurality of test points in the entire area of ​​the touch screen according to the equal division principle, and acquire physical coordinates and logical coordinates of each test point.

[0057] This embodiment obtains the physical coordinates and logical coordinates of each test point in the following manner:

[0058] According to the size and shape of the entire area of ​​the touch screen and the accuracy of the touch screen, multiple test points evenly distributed in the entire area of ​​the touch screen and the physical coordinates of each test point are obtained;

[0059] Use the mechanical arm to control the metal finger to sequentially touch the position corresponding to the physical coordinates of each test point in the entire area of ​​the touch screen, and obtain...

Embodiment 2

[0098] Based on the same technical idea as that of Embodiment 1, the present invention also provides a detection device for the accuracy of a touch screen.

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Abstract

The invention discloses a method and a device for detecting precision of a touch screen. The method comprises the following steps of: selecting a plurality of test points in the whole region of the touch screen and acquiring a physical coordinate and a logical coordinate of each test point; determining a core region of the touch screen and calculating a displacement deviation and an angular deviation of the touch screen by using the physical coordinate and the logical coordinate of each test point in the core region; according to the angular deviation and the displacement deviation, carrying out rotation and displacement correction on the logical coordinates of the test points in the whole region to obtain a corrected coordinate of each test point in the whole region; calculating a distance of the corrected coordinate of each test point in the whole region relative to the physical coordinate of each test to obtain error data of each test point; ordering all of the error data, removing the predetermined number of maximum error data, and taking the maximum error data in the remaining error data as the precision of the touch screen. Compared with the prior art, the technical scheme disclosed by the invention can effectively improve the accuracy of detection results of the precision of the touch screen.

Description

technical field [0001] The invention relates to the technical field of touch screen detection, in particular to a method and device for detecting the accuracy of a touch screen. Background technique [0002] At present, touch screens have been widely used in digital electronic products, such as mobile phones, PADs, game controllers, automatic teller machines, vending machines and other products that support touch operations, and the field of touch screens has also achieved rapid development. [0003] Generally, it is judged whether the touch screen is qualified or not by testing the report rate, accuracy, linearity, jitter and other performance indicators of the touch screen. When testing a high-precision touch screen, since this type of touch screen requires high precision, the accuracy test is more important. If the touch screen cannot be completely leveled during the test, it will cause slight rotation and displacement of the touch screen. If the accuracy test is perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0418
Inventor 宋伟单体江
Owner QINGDAO GOERTEK
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