Method for calibrating coordinates of touch screen

A touch screen and calibration method technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as display configuration mismatch, and achieve the effect of solving configuration mismatch

Inactive Publication Date: 2012-01-25
ELAN MICROELECTRONICS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, an object of the present invention is to provide a method for calibrating the coordinates of the touch screen to solve the problem that the coordinate configuration of the capacitive touch panel does not match the coordinate configuration of the display

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  • Method for calibrating coordinates of touch screen
  • Method for calibrating coordinates of touch screen
  • Method for calibrating coordinates of touch screen

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Embodiment Construction

[0028] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

[0029] figure 1 It is a structural cross-sectional view of a capacitive touch screen according to an embodiment of the present invention. Please refer to figure 1 , the capacitive touch screen includes a display module 40 and a capacitive sensor 41 . figure 2 It is a structural top view of the capacitive sensor 41 according to the embodiment of the present invention. Please refer to figure 2 , the capacitive sensor 41 includes a plurality of X-axis sensing electrodes X01 - X12 and a control circuit C10. Since an indicator needs to have an X-axis coordinate and a Y-axis coordinate, this embodiment only provides a method for locating the X-axis coordinate, and the method for locating the Y-axis coordinate can be the same as the method for locating the X-a...

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Abstract

The present invention relates to a method for calibrating coordinates of a touch screen. The method includes: providing a display panel which includes a plurality of display coordinates along a first axis, wherein the display coordinates includes a maximum display coordinate; providing a capacitive sensor which includes a plurality of sensing electrodes corresponding to a plurality of sensing coordinates along the first axis, wherein the capacitive sensor includes a maximum sensing coordinate; detecting a plurality of digital values corresponding to each of sensing electrodes when the capacitive sensor is touched; multiply the digital values and their corresponding sensing coordinates to obtain a weighting value; dividing the weighting value by the maximum sensing coordinate to obtain an interpolated value; and multiply the interpolated value and the maximum display coordinate to obtain a calibrated coordinate.

Description

[0001] This application is a divisional application of a patent application with an application date of June 30, 2008, an application number of 200810127253.X, and an invention title of "Coordinate Calibration Method for Touch Screen". technical field [0002] The present invention relates to an indicator positioning technology, and in particular to a coordinate calibration method of a touch screen. Background technique [0003] In recent years, due to the rapid development of science and technology, handheld devices, such as smart phones, personal digital assistants (Personal Digital Assistant, PDA), satellite navigation systems (Global Position System, GPS), etc., are becoming more and more popular. Since the above-mentioned devices all use touch screens, the technology of coordinate calibration between the touch sensor and the display device becomes very important. In the past, touch sensors generally use resistive sensors. This kind of resistive sensor must rely on pres...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 李佳益李文凯
Owner ELAN MICROELECTRONICS CORPORATION
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