Method for calibrating coordinates of touch control screen

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

Inactive Publication Date: 2009-07-01
ELAN MICROELECTRONICS CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, an object of the present invention is to provide a method for calibrating the coordinates of a touch screen to solve the problem that the configuration of the coordinates of the capacitive touch panel does not match the configuration of the coordinates of the display

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

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Embodiment Construction

[0027] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following will specifically cite preferred embodiments, in conjunction with the accompanying drawings, and describe them in detail as follows.

[0028] 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 top view of the structure of the capacitive sensor 41 according to an embodiment of the present invention. Please refer to figure 2 The capacitive sensor 41 includes a plurality of X-axis sensing electrodes X01 to X12 and a control circuit C10. Since the positioning index requires an X-axis coordinate and a Y-axis coordinate, this embodiment only provides a method for positioning the X-axis coordinate, and the Y-axis coordinate positioning method ca...

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Abstract

The present invention provides a coordinate calibrating method of touch control screen, wherein the method comprises the following steps: providing a display panel which comprises a plurality of display coordinates and a display coordinate value of first axis in the direction of the first axis; providing a capacitive sensor which is configured with a plurality of induction electrodes that are respectively corresponding with a plurality of capacitive coordinate values in the direction of the first axis, and is provided with a maximal capacitive coordinate value; when the capacitive sensor is touched, a plurality of digital values corresponding with each capacitive electrode are detected; multiplexing the digital value with the capacitive coordinate value corresponding with each capacitive electrode for obtaining an addition value; dividing the addition value by the maximal capacitive coordinate value for obtaining an interpolate value; and multiplexing the interpolate value with the display coordinate value of first axis for obtaining a calibration coordinate. The coordinate of edge is determined with the digital value corresponding with the equivalent capacitance induced by the edge induction electrode. The problem that the configuration of coordinate of condenser type touch control board is unmatched with the configuration of coordinate of display is settled.

Description

Technical field [0001] The present invention relates to an index positioning technology, and particularly relates to a coordinate calibration method of a touch screen. Background technique [0002] In recent years, due to the rapid development of technology, handheld devices, such as smart phones, personal digital assistants (PDAs), satellite navigation systems (Global Position System, GPS), etc., have also become more and more popular. Since the above-mentioned devices all use touch screens, the coordinate calibration technology of the touch sensor and the display device becomes very important. In the past, touch sensors generally used resistive sensors. This kind of resistive sensor must rely on pressure to sense the coordinates of the indicator on the screen. At present, such handheld devices usually use a liquid crystal screen, and the resistive sensor must overlap the liquid crystal screen. Therefore, when the resistive sensor is pressed, the liquid crystal screen is also pr...

Claims

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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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