JP2012173958A - Display device with touch panel - Google Patents

Abstract

To obtain a display device with a touch panel which prevents occurrence of malfunction at the time of touch input.
First and second X-axis direction touch input position detectors for detecting an X-axis direction component of input position coordinates, and first and first for detecting a Y-axis direction component of input position coordinates. 2 Y-axis direction touch input position detection units 2 and 6, a flash ROM 4 for storing preset first and second threshold values, and first and second X-axis direction touch input position detection units 1 The difference between the X-axis direction components of the input position coordinates detected by 5 is equal to or less than the first threshold value stored in the flash ROM 4, and the first and second Y-axis direction touch input position detection units 2, And a control unit 3 that enables only a touch input operation when the difference in the Y-axis direction component of the input position coordinates detected by 6 is equal to or less than the second threshold stored in the flash ROM 4.
[Selection] Figure 1

Description

  The present invention relates to a display device with a touch panel that prevents malfunction during touch input to a matrix resistive film type or analog resistive film type touch panel.

  A conventional display device with a touch panel includes a pair of an X-axis direction touch input position detection unit and a Y-axis direction touch position detection unit in order to detect touch input position coordinates at the time of touch input. The display device with a touch panel configured as described above includes the touch input position X coordinate detected by the X axis direction touch input position detection unit and the touch input position Y coordinate detected by the Y axis direction touch position detection unit during touch input. Based on the above, it is checked whether or not the touch switch function exists at the XY coordinates. If the touch switch function exists, the process defined for the corresponding touch switch function is executed.

  By the way, in a display device with a touch panel, coordinates at a position different from the position at which touch input is performed during touch input may be erroneously detected as touch input coordinates. For example, in a display device including an analog resistive film type touch panel, coordinates of a position different from a position where a touch operation is performed at the time of touch input due to deterioration of resistance over time or a temperature change can be detected as touch input position coordinates. is there.

  Similarly, when the position different from the position where the touch input is made is in the touch input state due to a failure or the like, the touch input position coordinates are erroneously detected.

  If there is a touch switch function that is defined to perform some processing at the touch input position coordinates that are erroneously detected during these erroneous detections, the processing of the corresponding touch switch function is performed. That is, a process different from a desired process at the time of touch input may be executed.

  Patent Document 1 discloses a display device with a touch panel including a plurality of touch input position detection units. The invention disclosed in Patent Document 1 prevents malfunction of the touch panel by detecting the presence or absence of touch input with a plurality of touch panels.

Japanese Patent Laid-Open No. 10-254530

  However, the invention disclosed in Patent Document 1 makes a correct / incorrect determination as to whether or not there is a touch input, but does not make a correct / incorrect determination of the touch input position. That is, the difference in touch input position coordinates in the same axis direction from a plurality of touch input position detection units is not used for correct / incorrect determination of the touch input position. For this reason, if the coordinates of the position different from the position where the touch input is made are erroneously detected as the touch input position coordinates, the process defined in the touch switch function is executed, and a malfunction may occur. .

  The present invention has been made in view of the above, and an object of the present invention is to obtain a display device with a touch panel that prevents occurrence of malfunction during touch input.

  In order to solve the above-described problems and achieve the object, the present invention includes a touch panel, detects input position coordinates where a touch input operation is performed on the touch panel, and a touch switch exists in the input position coordinates. , A display device with a touch panel that performs the function of a touch switch, the first and second X-axis direction touch input position detecting means for detecting the X-axis direction component of the input position coordinates, and the Y-axis of the input position coordinates First and second Y-axis direction touch input position detection means for detecting a direction component, storage means for storing first and second threshold values set in advance, and for first and second X-axis directions The difference between the X-axis direction components of the input position coordinates detected by the touch input position detection means is equal to or smaller than the first threshold stored in the storage means, and the first and second Y-axis direction touch input position detections hand There difference in the Y-axis direction component of the detected input position coordinates, characterized in that a control means to enable only touch input operation is less than or equal to a second threshold value stored in the storage means.

  According to the present invention, there is an effect that it is possible to prevent the occurrence of malfunction during touch input.

FIG. 1 is a diagram showing a configuration of an embodiment of a display device with a touch panel according to the present invention. FIG. 2 is a diagram showing a configuration of an embodiment of a display device with a touch panel according to the present invention. FIG. 3 is a flowchart showing the touch input position correctness determination processing procedure of the display device with a touch panel according to the present embodiment.

  Embodiments of a display device with a touch panel according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
1 and 2 are diagrams showing a configuration of an embodiment of a display device with a touch panel according to the present invention. The display device with a touch panel according to the present embodiment includes a first X-axis direction touch input position detection unit 1, a first Y-axis direction touch input position detection unit 2, a control unit 3, a flash ROM 4, and a second ROM. It has an X-axis direction touch input position detection unit 5 and a second Y-axis direction touch input position detection unit 6.

  At the time of touch input, as shown in FIG. 2, the first X-axis direction touch input position detector 1 detects the touch input position X-coordinate X1, and the second X-axis direction touch input position detector 5 performs touch input. The position X coordinate X2 is detected. That is, the first and second X-axis direction touch input position detection units 1 and 5 detect the X-axis direction component of the coordinates of the touch input position.

  Similarly, the first Y-axis direction touch input position detection unit 2 detects the touch input position Y-coordinate Y1, and the second Y-axis direction touch input position detection unit 6 detects the touch input position Y-coordinate Y2. . That is, the first and second Y-axis direction touch input position detection units 2 and 6 detect the Y-axis direction component of the coordinates of the touch input position.

  These coordinates are input to the control unit 3. When the control unit 3 executes the software stored in the flash ROM 4 to collate the coordinates input from each touch input position detection unit for each same axis direction, and the difference is within the allowable range Only the touch input of is valid. The allowable range is stored together with other data in the flash ROM 4 included in the display device with a touch panel, and can be changed to an arbitrary value. Further, the allowable range may be a different value in the X-axis direction and the Y-axis direction, or may be the same value.

  FIG. 3 is a flowchart showing the touch input position correctness determination processing procedure of the display device with a touch panel according to the present embodiment.

  When there is an input to the touch panel (step S1 / Yes), the first X-axis direction touch input position detection unit 1 detects the X-axis direction component (X coordinate) X1 of the touch input position coordinates (step S2). The second X-axis direction touch input position detection unit 5 detects the X-axis direction component X2 of the touch input position coordinates (step S3). If there is no input to the touch panel (step S1 / No), the process returns to step S1 and waits for input to the touch panel.

  Similarly, the first Y-axis direction touch input position detection unit 2 detects the Y-axis direction component (Y-coordinate) Y1 of the touch input position coordinates (step S4), and detects the second Y-axis direction touch input position. The unit 6 detects the Y-axis direction component Y2 of the touch input position coordinates (step S5).

  Next, the control unit 3 collates the touch input position coordinates for each component in the same axis direction to detect a difference. The difference between the X-axis direction components is calculated as | X1-X2 | (step S6), and the difference between the Y-axis direction components is calculated as | Y1-Y2 | (step S7).

  The control unit 3 compares the calculated | X1-X2 | with the allowable range (first threshold) stored in the flash ROM 4 (step S8), and | X1-X2 | is within the allowable range (first If it is equal to or less than the threshold value (step S8 / Yes), the process proceeds to step S9. If | X1-X2 | is larger than the allowable range (step S8 / No), the touch input operation is processed as invalid (step S12).

  The control section 3 compares the calculated | Y1-Y2 | with the allowable range (second threshold) stored in the flash ROM 4 (step S9), and | Y1-Y2 | is within the allowable range (second If it is equal to or less than the threshold value (step S9 / Yes), it is confirmed whether or not an effective touch switch function exists at the XY coordinates indicated by (X1, Y1) (step S10). If | Y1-Y2 | is larger than the allowable range (step S9 / No), the touch input operation is processed as invalid (step S12). Then, it returns to step S1 and waits for the next input to a touch panel.

  When an effective touch switch function exists at the coordinates (X1, Y1) (step S10 / Yes), the corresponding touch switch function is executed (step S11). If there is no valid touch switch function at the coordinates (X1, Y1) (step S10 / No), the touch input operation is processed as invalid (step S12). Then, it returns to step S1 and waits for the next input to a touch panel.

  As described above, the display device with a touch panel according to the present embodiment includes two touch input position detection units for the X-axis direction and two for the Y-axis direction, and two touch input position detection units at the time of touch input. By collating the components in the same axial direction of the individually detected touch input coordinates and validating only the touch input when the difference is within the allowable range, it is possible to prevent an erroneous operation during the touch input.

DESCRIPTION OF SYMBOLS 1 1st X-axis direction touch input position detection part 2 1st Y-axis direction touch input position detection part 3 Control part 4 Flash ROM
5 Second X-axis direction touch input position detection unit 6 Second Y-axis direction touch input position detection unit

Claims (3)

A display device with a touch panel that includes a touch panel, detects an input position coordinate where a touch input operation is performed on the touch panel, and executes a function of the touch switch when the touch switch exists at the input position coordinate. ,
First and second X-axis direction touch input position detecting means for detecting an X-axis direction component of the input position coordinates;
First and second Y-axis direction touch input position detecting means for detecting a Y-axis direction component of the input position coordinates;
Storage means for storing first and second threshold values set in advance;
A difference between X-axis direction components of the input position coordinates detected by the first and second X-axis direction touch input position detection means is equal to or less than the first threshold stored in the storage means; and The difference between the Y-axis direction components of the input position coordinates detected by the first and second Y-axis direction touch input position detection means is equal to or less than the second threshold value stored in the storage means. A display device with a touch panel, comprising: a control unit that enables only a touch input operation.   The display device with a touch panel according to claim 1, wherein the storage unit stores the first and second threshold values in a rewritable manner.   When the control means validates the touch input operation, the X-axis direction component and the Y-axis direction are detected by the first X-axis direction touch input position detection means and the first Y-axis direction touch input position detection means. The display device with a touch panel according to claim 1, wherein a function of the touch switch existing at the input position coordinate where the component is detected is executed.

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