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Touch panel and touch point sensing method

A touch panel and touch point technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as fullness, error, and increased cost

Inactive Publication Date: 2013-01-02
ITE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application environment, it is always full of a lot of noise
Therefore, in the existing touch panel, in order to reduce the noise in the environment, it is always necessary to add a lot of complicated circuit devices, which virtually increases the cost.
In addition, because the force of the user pressing the touch panel is not equal, the difference caused by different users is not easy to be taken into account in the existing touch panel.
Therefore, when the existing touch panels detect the number of touch points and their coordinates, many errors often occur

Method used

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  • Touch panel and touch point sensing method

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Embodiment Construction

[0033] First, please refer to Figure 1A , Figure 1A It is a schematic diagram of a touch panel 100 according to an embodiment of the present invention. The touch panel 100 includes a touch detection row 110 and a touch point detection module 120 , and the touch detection row 110 includes a plurality of touch detection units 111 - 115 . Wherein, each touch detection unit will transmit a corresponding capacitance change value according to the size of the touched area.

[0034] The touch point detection module 120 is coupled with the touch detection column 110. When the touch point detection module 120 is to detect a touch point on the touch detection column 110, the touch point detection The measurement module 120 performs difference calculation on the capacitance change values ​​transmitted by two adjacent touch detection units according to the arrangement order of the touch detection units 111 - 115 . In other words, the touch point detection module 120 can perform differen...

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Abstract

The invention provides a touch panel and a touch point sensing method. The touch panel comprises at least one touch sensing array and a touch point sensing module, wherein the touch sensing array comprises N numbered first touch sensing units, wherein N is a positive integer; each first touch sensing unit transmits a first capacitance change value according to the touched area; the touch point sensing module computes the difference value between the first capacitance change values transmitted by two adjacent first touch sensing units according to the sequence of the first touch sensing units,thus acquiring the sequential distribution of the first capacitance changes; and the touch point sensing module computes to acquire at least one first touch point and the coordinates of the first touch point on the touch panel according to the sequential distribution of the first capacitance changes.

Description

technical field [0001] The invention relates to a touch panel, and in particular to a touch panel and a method for detecting touch points. Background technique [0002] With the increasing sophistication of electronic technology, consumers' requirements for the value and function of electronic products are also increasing. In order to make it easier for consumers to use these electronic products and attract consumers' love, many humanized man-machine interfaces have been proposed. [0003] Among the various types of human-machine interfaces, the most common is the so-called touch panel. A touch panel is a device that can directly receive input signals from a contact (whether it is a finger or a stylus tip, etc.). When the user's finger touches the touch panel, the touch sensor on the panel returns a corresponding electrical signal, and use the touch signal to learn what the corresponding action the user is doing on the touch panel. [0004] In the existing capacitive touc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 吴仓志
Owner ITE TECH INC