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Touch control method and control circuit of a resistive touch screen

A technology for controlling circuits and touch screens, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problem of judging the complexity of two-point touch methods, and achieve the effect of simple operation

Active Publication Date: 2015-07-29
EZCHIPS MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a touch control method, a control circuit, a touch screen device and an electronic device of a resistive touch screen, so as to overcome the technical problem that the method for judging two-point touch is too complicated in the prior art, So as to realize the simple two-point touch judgment

Method used

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  • Touch control method and control circuit of a resistive touch screen
  • Touch control method and control circuit of a resistive touch screen
  • Touch control method and control circuit of a resistive touch screen

Examples

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Embodiment 1

[0057] This embodiment provides a touch control method for a resistive touch screen, the method uses a control circuit such as Figure 3a or as Figure 3b shown, as Figure 3a In the control circuit, the touch screen includes two resistive films, denoted as the first resistive film RF1 and the second resistive film RF2, each resistive film is connected to a terminal on both sides, and the first resistive film RF1 is connected to the first terminal on both sides XL and the second terminal XR, the two sides of the second resistive film RF2 are connected to the third terminal YT and the fourth terminal YB; for example Figure 3b shown in the control circuit, except for the Figure 3a In addition to the various circuit structures shown, the touch screen further includes a first resistor R1 connected to the first terminal XL at one end, a second resistor R2 connected to the second terminal at one end, a third resistor R3 connected to the third terminal at one end, and A fourth r...

Embodiment 2

[0083] This embodiment provides a control circuit for a resistive touch screen, such as Figure 3a As shown, the control circuit includes a touch screen, and the touch screen includes two resistive films, denoted as a first resistive film RF1 and a second resistive film RF2, each of which is connected to a terminal on both sides of the resistive film, and the two sides of the first resistive film RF1 The first terminal XL and the second terminal XR are connected on one side, and the two sides of the second resistive film RF2 are connected to the third terminal YT and the fourth terminal YB;

[0084] The control circuit also includes a voltage generation unit, a detection unit and a judgment unit;

[0085] In this embodiment, the first terminal is used as the first detected terminal, the second terminal is used as the second detected terminal, the third terminal is used as the third detected terminal, and the fourth terminal is used as the fourth detected terminal;

[0086] Th...

Embodiment 3

[0115] This embodiment provides a control circuit for a resistive touch screen, such as Figure 3b As shown, the control circuit includes a touch screen, and the touch screen includes two resistive films, denoted as a first resistive film RF1 and a second resistive film RF2, each of which is connected to a terminal on both sides of the resistive film, and the two sides of the first resistive film RF1 The two sides of the second resistive film RF2 are connected to the third terminal YT and the fourth terminal YB. It also includes a first resistor R1 connected to the first terminal XL at one end, and connected to the second terminal at one end. A second resistor R2 connected to the terminal, a third resistor R3 connected to the third terminal at one end, and a fourth resistor R4 connected to the fourth terminal at one end.

[0116] In this embodiment, the other end of the first resistor is used as the first detected end, the other end of the second resistor is used as the second...

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Abstract

The invention provides a touch control method and a control circuit of a resistance type touch screen, touch screen equipment and electronic equipment. The touch screen comprises two resistance films, and two sides of each resistance film are respectively connected with a terminal. The control method comprises the following steps of: respectively applying a first bias voltage and a second bias voltage onto the two terminals of one resistance film; detecting a voltage difference between two detected ends of the other resistance film; and judging whether the touch is carried out in a single point manner or a two-point manner according to the voltage difference. By adopting the technical scheme provided by the invention, the technical problem that the method for judging the two-point touch is too complex in the prior art can be overcome, so that the two-point touch can be simply and conveniently judged.

Description

technical field [0001] The invention relates to the field of resistive touch screens, in particular to a technology for two-point touch control in the resistive touch screen. Background technique [0002] Touch screen (Touch panel), also known as touch panel, is an inductive liquid crystal display device that can receive input signals such as contacts. When touching the graphic buttons on the screen, the tactile feedback system on the screen can drive each A connecting device can be used to replace the mechanical button panel and produce vivid audio-visual effects through the liquid crystal display screen. [0003] Resistive touch screen is a commonly used touch screen, which converts the physical position of the touch point (X, Y) in the rectangular area into a voltage representing the X coordinate and Y coordinate, and obtains the physical position of the touch point by detecting the voltage value. Many liquid crystal displays (LCDs) use resistive touch screens. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/045
Inventor 吕连国熊江
Owner EZCHIPS MICROELECTRONICS CO LTD
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