JP2016038738A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that appropriately changes the brightness of a touch panel.SOLUTION: A display device 1 determines whether or not to change the brightness of a touch panel 14 by referring to a result of determination as to whether or not an operation indicator is in contact with the touch panel 14 or whether or not the operation indicator is within a predetermined range from the touch panel 14, and a result of determination of the presence or absence of movement of the operation indicator in a predetermined time period.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device provided with a touch panel.

  In recent years, various electronic devices equipped with a touch panel have become widespread. In such an electronic device, in order to ensure the visibility of a display screen displayed on the touch panel, a technique for changing the luminance of the touch panel according to the brightness around the electronic device has been developed.

  However, when the brightness around the electronic device is detected by the optical sensor, even if the brightness around the electronic device is not changed, the user can operate the touch panel so that the optical sensor The brightness to measure may change, and the situation which changes the brightness | luminance of a touch panel improperly may arise.

  In order to avoid such a situation, the mobile terminal described in Patent Document 1 is a mobile terminal having a function of adjusting the brightness of the touch panel according to the brightness of the surroundings, and is disposed in the vicinity of the touch panel. An optical sensor that measures the brightness of the touch panel, and the brightness measured by the optical sensor changes from a first state to a second state that is lower than a threshold for controlling to change the brightness of the touch panel. In this case, when the brightness measured by the optical sensor changes from the second state to the first state before the first time has elapsed since the change, the brightness of the touch panel is changed to the first state. The corresponding luminance is maintained, and when the second state has not changed to the first state, the luminance of the touch panel is changed to the luminance corresponding to the second state. And a control for brightness control unit.

JP 2012-137859 A (published July 19, 2012)

  However, in the mobile phone described in Patent Document 1, when the user performs an operation exceeding a predetermined time, such as continuously performing a touch operation on the touch panel, the brightness of the touch panel cannot be appropriately changed. There is a problem.

  The present invention has been made in view of the above problems, and an object thereof is to provide a display device capable of appropriately changing the luminance of a touch panel.

  In order to solve the above-described problem, a display device according to one embodiment of the present invention includes a touch panel that receives an input by contact of an operation indicator, an illuminance sensor, and whether the operation indicator is in contact with the touch panel. Or a first determination means for determining whether or not the operation indicator is within a predetermined distance from the touch panel, and a second for determining the presence or absence of movement of the operation indicator within a predetermined time. Refer to the determination means and the determination results of the first determination means and the second determination means to determine whether to change the brightness of the touch panel. When it is determined to change the brightness, the illuminance sensor And a luminance changing means for changing the luminance according to the detected illuminance.

  According to one embodiment of the present invention, the luminance of the touch panel can be changed appropriately.

It is a block diagram which shows the structure of the information terminal device which concerns on one Embodiment of this invention. It is an external view of the information terminal device shown in FIG. It is a conceptual diagram which shows the example of the state of the operation indicator determined by the state discrimination | determination part with which the information terminal device shown in FIG. 1 is equipped, (a) shows an example of the state in which the operation indicator is contacting the display, (B) shows an example of the state in which the operation indicator is close to the display. It is a conceptual diagram which shows the example of a motion of the operation indicator detected by the operation | movement detection part with which the information terminal device shown in FIG. 1 is equipped, (a) is an example of a motion when the operation indicator is contacting the display. (B) shows an example of the movement when the operation indicator is close to the display, and (c) shows another example of the movement when the operation indicator is close to the display. The conceptual diagram which shows the position of the operation indicator assumed by referring the movement of the operation indicator which the operation | movement detection part with which the information terminal device shown in FIG. 1 is equipped detects, and the illumination intensity change which an illumination intensity change detection part detects. (A) shows a case where the operation indicator moves and there is a change in illuminance, (b) shows a case where there is no movement of the operation indicator and there is a change in illuminance, c) and (d) show a case where there is no movement of the operation indicator and there is no change in illuminance, and (e) and (f) show a case where there is a movement of the operation indicator and there is no change in illuminance. Indicates. It is a conceptual diagram which shows the example of the position of the operation indicator discriminated by the position discrimination | determination part with which the information terminal device shown in FIG. 1 is provided, (a) shows the case where the operation indicator is contained in the sensor side area | region. (B) shows the case where the operation indicator is not included in the sensor side region. It is a flowchart which shows an example of the process sequence of the information terminal device shown in FIG.

  Hereinafter, a display device according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present embodiment, a case where a portable information terminal is used as an example of a display device will be described.

  FIG. 1 is a block diagram showing a configuration of the information terminal device 1 according to the present embodiment. As illustrated in FIG. 1, the information terminal device 1 includes an illuminance sensor 11, a proximity sensor 13, a touch panel 14, a control unit 15, and a storage unit 16.

  Here, the appearance of the information terminal device 1 will be described with reference to another drawing. FIG. 2 is an external view of the information terminal device 1. As shown in FIG. 2, both the illuminance sensor 11 and the proximity sensor 13 are provided around the touch panel 14 on the lower side of the information terminal device 1. Both the illuminance sensor 11 and the proximity sensor 13 may be provided on the upper side of the information terminal device 1, or the illuminance sensor 11 and the proximity sensor 13 may be provided at different positions.

  The storage unit 16 stores an OS (Operating System) program of the information terminal device 1, various application programs, various control programs, various data, and the like. The control unit 15 refers to various programs and various data stored in the storage unit 16, so that an illuminance change detection unit (second determination unit) 151, a state determination unit (first determination unit) 152, luminance control Functions as a unit (brightness changing unit) 153, an operation detecting unit (second determining unit) 154, and a position determining unit (third determining unit) 155. The touch panel 14 displays an image having display contents corresponding to the execution result of the program by the information terminal device 1.

  The illuminance sensor 11 is a configuration for detecting the illuminance around the information terminal device 1, and is configured by, for example, a photodiode. The illuminance sensor 11 outputs a signal corresponding to the amount of received light and supplies it to the illuminance change detection unit 151. The illuminance change detection unit 151 generates illuminance information indicating the illuminance value indicated by the signal supplied from the illuminance sensor 11. The illuminance change detection unit 151 stores the generated illuminance information in the storage unit 16. Further, the illuminance change detection unit 151 refers to the storage unit 16 to determine whether or not the illuminance information has changed, and supplies a signal indicating the determination result to the luminance control unit 153.

  When the luminance control unit 153 determines whether to change the luminance of the touch panel 14 using the signal indicating the determination result supplied from the illuminance change detection unit 151 as a trigger, and determines that the luminance of the touch panel 14 is to be changed, The touch panel 14 is controlled so that the brightness of the touch panel 14 is changed to the brightness according to the illuminance information supplied from the illuminance change detection unit 151.

  The touch panel 14 receives an input operation (hereinafter also referred to as “touch input operation”) that involves a touch on the touch panel 14 by an operation indicator (for example, a user's finger or a stylus pen). When the touch panel 14 detects a touch on the touch panel 14 by the operation indicator, the touch panel 14 generates touch position information indicating a touch position on the touch panel 14. Here, the touch position is indicated by, for example, an x coordinate and a y coordinate for specifying a position on the touch panel 14. The touch panel 14 supplies the generated touch position information to the state determination unit 152, the operation detection unit 154, and the position determination unit 155 and stores the information in the storage unit 16.

  The touch panel 14 may generate proximity position information indicating a proximity position of an operation indicator that is close to the touch panel 14. Here, the proximity position indicates a position where the operation indicator is projected onto the touch panel 14 along the normal direction of the touch panel 14, and is indicated by the x coordinate and the y coordinate similarly to the touch position. The touch panel 14 supplies the generated proximity position information to the state determination unit 152, the operation detection unit 154, and the position determination unit 155 and stores the information in the storage unit 16. As a touch panel that can detect such a proximity position, for example, a known capacitive touch panel and the like can be cited.

  The proximity sensor 13 detects whether or not an object such as an operation indicator exists within a predetermined distance from the touch panel 14. For example, the proximity sensor 13 calculates the distance between the detected operation indicator and the touch panel 14, and generates proximity distance information indicating the calculated distance value. The proximity sensor 13 supplies the generated proximity distance information to the state determination unit 152 and stores it in the storage unit 16.

  The state determination unit 152 is a means for determining the state of the operation indicator with respect to the touch panel 14. More specifically, the state determination unit 152 determines whether or not the operation indicator is in contact with the touch panel 14 (is in a contact state), or the operation indicator is within a predetermined distance from the touch panel 14. It is determined whether or not there is (close state).

  Here, the state of the operation indicator determined by the state determination unit 152 will be described instead of referring to the drawing. FIG. 3 is a conceptual diagram illustrating the state of the operation indicator determined by the state determination unit 152. FIG. 3A illustrates an example of the state in which the operation indicator is in contact with the touch panel 14, and FIG. An example of a state in which the operation indicator is close to a distance within a predetermined distance d from the touch panel 14 is shown. When receiving the touch position information from the touch panel 14, the state determination unit 152 determines that the operation indicator is in a contact state, and when receiving proximity distance information equal to or less than a predetermined distance d from the proximity sensor 13, the operation indicator is in proximity. It is determined that it is in a state. Further, the state determination unit 152 determines that the operation indicator is in a separated state that is separated from the touch panel 14 by a predetermined distance d when the operation indicator is not in the contact state or the proximity state. The state determination unit 152 supplies a signal indicating the determination result to the luminance control unit 153.

  When the state indicator 152 determines that the operation indicator is in the separated state, it is considered that the change in illuminance detected by the illuminance sensor 11 is caused by the change in illuminance around the information terminal device 1. Therefore, the brightness control unit 153 determines that the brightness of the touch panel 14 is to be changed when the state determination unit 152 determines that the operation indicator is in the separated state, and changes the brightness of the touch panel 14 to a brightness corresponding to the illuminance L2. To do. For example, when illuminance L1 <illuminance L2, the touch panel 14 is changed to increase the brightness, and when illuminance L1> illuminance L2, the touch panel 14 is changed to decrease the brightness. The visibility of the screen displayed on the screen can be improved.

  When the state determination unit 152 determines that the operation indicator is in the contact state or the proximity state, it is considered that the change in illuminance detected by the illuminance sensor 11 may have been caused by the operation of the operation indicator. It is done. Therefore, the brightness control unit 153 can further appropriately change the brightness of the touch panel 14 by further referring to the presence or absence of the movement of the operation indicator.

  The motion detection unit 154 is a means for determining whether or not the operation indicator moves within a predetermined time T. Here, the predetermined time T may be a time sufficient for detecting the movement of the operation indicator, and may be, for example, about 2 to 3 seconds.

  FIG. 4 is a conceptual diagram illustrating an example of the movement of the operation indicator detected by the motion detection unit 154. FIG. 4A shows an example of movement when the operation indicator is in contact with the touch panel 14, and shows an example of a touch operation, a drag operation, a flick operation, or the like by the operation indicator. Yes. FIG. 4B shows an example of movement when the operation indicator is close to the touch panel 14, and shows an example of a hover operation in which the operation indicator moves while maintaining a proximity state with respect to the touch panel 14. Yes. FIG. 4C shows another example of movement when the operation indicator is close to the touch panel 14, and an example of movement in which the distance between the operation indicator and the touch panel 14 changes. Is shown.

  The motion detection unit 154 operates when the touch position information and the proximity position information supplied from the touch panel 14 and the proximity distance information supplied from the proximity sensor 13 change within a predetermined time T. It is determined that there is a movement of the indicator.

  At this time, the illuminance change detection unit 151 determines whether there is a change in illuminance in the same period as the predetermined time T used for detecting the operation in the operation detection unit 154.

  Next, with reference to FIG. 5, the operation of the brightness control unit 153 when the state determination unit 152 determines that the operation indicator is in the contact state or the proximity state will be described. FIG. 5 is a conceptual diagram illustrating the position of the operation indicator assumed by referring to the movement of the operation indicator detected by the motion detection unit 154 and the change in illuminance detected by the illuminance change detection unit 151.

  As shown in FIG. 5A, when the operation indicator is moving, it is considered that the change in illuminance within the predetermined time T is caused by the movement of the operation indicator. Therefore, when the motion detection unit 154 determines that there is a movement of the operation indicator, and the illuminance change detection unit 151 determines that there is a change in illuminance, the luminance control unit 153 must change the luminance of the touch panel 14. judge.

  Further, as shown in FIG. 5B, when the operation indicator is not moving, it is considered that the change in illuminance within the predetermined time T is caused by the change in ambient illuminance. Therefore, when the motion detection unit 154 determines that there is no movement of the operation indicator, and the illuminance change detection unit 151 determines that there is a change in illuminance (change from illuminance L2 to illuminance L3), the luminance control unit 153 Then, it is determined that the brightness of the touch panel 14 is changed, and the brightness of the touch panel 14 is changed to a brightness corresponding to the illuminance L3.

  Furthermore, when the motion detection unit 154 determines that there is no movement of the operation indicator, and the illuminance change detection unit 151 determines that there is no change in illuminance, an operation instruction as illustrated in FIG. A case where the illuminance sensor 11 is not covered by the body and a case where the illuminance sensor 11 is covered by the operation indicator as shown in FIG. When the operation detection unit 154 determines that there is a movement of the operation indicator, and the illuminance change detection unit 151 determines that there is a change in illuminance (change from illuminance L2 to illuminance L3), FIG. A case where the illuminance sensor 11 is not covered with the operation indicator as shown in e) and a case where the illuminance sensor 11 is covered with the operation indicator as shown in FIG.

  Therefore, the luminance control unit 153 can further appropriately change the luminance of the touch panel 14 by further referring to a determination result by a position determination unit 155 described later.

  FIG. 6 is a conceptual diagram showing the position of the operation indicator determined by the position determination unit 155. As described above, in the present embodiment, the illuminance sensor 11 is disposed on the lower side of the information terminal device 1. Therefore, in the example shown in FIG. 6A, in the information terminal device 1, a lower side region R1 and an upper side region R2 divided into upper and lower halves are defined, and further, the lower side region R1 is defined. It is defined as the sensor side area. In the present embodiment, the position on the boundary line between the region R1 and the region R2 is included in the region R1. The region R1 and the region R2 are not limited to the example illustrated in FIG. 6 and can be appropriately changed according to the arrangement position of the illuminance sensor 11. For example, when the illuminance sensor 11 is disposed on the left side of the information terminal device 1, in the information terminal device 1, the left side region may be defined as the sensor side region.

  The position determination unit 155 refers to the storage unit 16 to determine whether the x-coordinate and y-coordinate indicated by the touch position information of the operation indicator are coordinates in the region R1, and outputs a signal indicating the determination result. This is supplied to the luminance control unit 153. Note that if the touch position information is not stored in the storage unit 16 and the proximity distance information is stored in the storage unit 16, the position determination unit 155 determines that there is an operation indicator at the position where the proximity sensor 13 is disposed. Also good. For example, in the present embodiment, since the proximity sensor 13 is arranged in the side region R1, in the above case, the position determination unit 155 may be configured to determine that the operation indicator is in the region R1. .

  As shown in FIG. 6A, when the touch position or proximity position of the operation indicator is within the region R1, it is considered that the illuminance sensor 11 is covered with the operation indicator. Therefore, the brightness control unit 153 determines not to change the brightness of the touch panel 14 when the position determination unit 155 determines that the touch position or the proximity position of the operation indicator is within the region R1.

  On the other hand, as shown in FIG. 6B, when the touch position or the proximity position of the operation indicator is the region R2 on the side where the illuminance sensor 11 is not provided, the illuminance sensor 11 is covered by the operation indicator. It is thought that it is not. Therefore, the brightness control unit 153 determines that the brightness of the touch panel 14 is to be changed when the position determination unit 155 determines that the touch position or the proximity position of the operation indicator is not in the region R1, and the brightness of the touch panel 14 is determined. Is changed to a luminance corresponding to the illuminance L2.

In summary, the brightness control unit 153 according to the present embodiment is
(I) When the state determination unit 152 determines that the operation indicator is not in contact with the touch panel 14 or is separated from the touch panel 14 by a predetermined distance d,
(Ii) The state determination unit 152 determines that the operation indicator is in contact with the touch panel 14 or is within a predetermined distance d from the touch panel 14, and the motion detection unit 154 has no movement of the operation indicator. When the illuminance change detection unit 151 determines that there is a change in illuminance, and (iii) the state determination unit 152 is in contact with the touch panel 14 or a predetermined value from the touch panel 14 When it is determined that it is within the distance d, the illuminance change detection unit 151 determines that there is no change in illuminance, and the position determination unit 155 determines that the operation indicator is not in the sensor side region R1,
It is determined that the luminance of the touch panel 14 is changed. Therefore, according to the information terminal device 1 which concerns on this embodiment, even if it is a case where operation is performed by the user, the brightness | luminance of the touch panel 14 can be changed appropriately.

  Next, the processing procedure of the information terminal device 1 will be described with reference to FIG. FIG. 7 is a flowchart illustrating an example of a processing procedure of the information terminal device 1.

  First, when the illuminance change detection unit 151 detects a change from the illuminance L1 to the illuminance L2 (S1), the state determination unit 152 is in contact with the touch panel 14 (in a contact state). Whether or not the operation indicator is within a predetermined distance from the touch panel 14 (close state) (departed state) is determined (S2).

  When the state determination unit 152 determines that the operation indicator is in a separated state with respect to the touch panel 14 (S3: YES), the luminance control unit 153 determines to change the luminance of the touch panel 14, and the luminance of the touch panel 14 is determined. The luminance is changed according to the illuminance L2 (S4).

  When the state determination unit 152 determines that the operation indicator is in a contact state or a proximity state with respect to the touch panel 14 (S3: NO), the motion detection unit 154 determines whether or not the operation indicator moves within a predetermined time T. Is determined (S5). Subsequently, the illuminance change detection unit 151 determines whether there is a change in illuminance within the predetermined time T (S6).

  When the motion detection unit 154 determines that there is a movement of the operation indicator (S7: YES), and the illuminance change detection unit 151 determines that there is a change from the illuminance L2 to the illuminance L3 (S8: YES), the luminance The control unit 153 determines not to change the luminance of the touch panel 14 (S9).

  Further, when the operation detection unit 154 determines that there is no movement of the operation indicator (S7: NO), and the illuminance change detection unit 151 determines that there is a change from the illuminance L2 to the illuminance L3 (S10: YES). The brightness control unit 153 determines that the brightness of the touch panel 14 is to be changed, and changes the brightness of the touch panel 14 to a brightness corresponding to the illuminance L3 (S11).

  Further, when the motion detection unit 154 determines that there is a movement of the operation indicator (S7: YES), and the illuminance change detection unit 151 determines that there is no change in illuminance (S8: NO), the position determination unit 155. Determines whether the touch position or the proximity position of the operation indicator is within the sensor-side region (region R1 in FIG. 6) (S12).

  Further, the position detection is also performed when the motion detection unit 154 determines that there is no movement of the operation indicator (S7: NO), and the illuminance change detection unit 151 determines that there is no change in illuminance (S10: NO). The unit 155 determines whether or not the touch position or proximity position of the operation indicator is within the region R1 (S12).

  When the position determination unit 155 determines that the touch position or the proximity position of the operation indicator is within the region R1 (S12: YES), the luminance control unit 153 determines that the luminance of the touch panel 14 is not changed (S9). .

  When the position determination unit 155 determines that the touch position or proximity position of the operation indicator is not within the region R1 (S12: NO), the luminance control unit 153 determines to change the luminance of the touch panel 14, and the touch panel The brightness of 14 is changed to a brightness corresponding to the illuminance L2 (S11).

  With the above procedure, the information terminal device 1 can appropriately change the luminance of the touch panel 14 according to the state of the operation indicator, using the change in illuminance detected by the illuminance change detection unit 151 as a trigger.

[Example of software implementation]
The control block of the information terminal device 1 (the control unit 15, in particular, the illuminance change detection unit 151, the state determination unit 152, the luminance control unit 153, the operation detection unit 154, and the position determination unit 155) is an integrated circuit (IC chip) or the like. It may be realized by a logic circuit (hardware) formed in the above, or may be realized by software using a CPU (Central Processing Unit).

  In the latter case, the information terminal device 1 includes a CPU that executes instructions of a program that is software that realizes each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) that expands the program, and the like are provided. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
The display device (information terminal device 1) according to the first aspect of the present invention includes a touch panel 14 that receives input by contact of an operation indicator, an illuminance sensor 11, and whether the operation indicator is in contact with the touch panel. Alternatively, a first determination unit (state determination unit 152) that determines whether or not the operation indicator is within a predetermined distance from the touch panel, and a first determination unit that determines whether or not the operation indicator moves within a predetermined time. Referring to the determination results of the second determination means (motion detection unit 154) and the first determination means and the second determination means, it is determined whether or not to change the luminance of the touch panel, and it is determined that the luminance is to be changed. And a luminance changing means (luminance control unit 153) for changing the luminance according to the illuminance detected by the illuminance sensor.

  In the technique of changing the brightness of the touch panel in accordance with the change in illuminance detected by the illuminance sensor, the illuminance sensor detects the illuminance sensor covered by an operation indicator (finger, stylus, etc.) for operating the touch panel. The illuminance may change, and the brightness of the touch panel may be changed inappropriately.

  On the other hand, according to the above configuration, the first determination unit determines whether or not the operation indicator exists in the vicinity of the touch panel, and the second determination unit determines whether or not the operation indicator is moving. Can be determined. The operation indicator existing in the vicinity of the touch panel may cover the illuminance sensor, and the moving operation indicator may cause the change in illuminance detected by the illuminance sensor. The determination result by the second determination means indicates the possibility that the change in illuminance detected by the illuminance sensor is caused by the operation indicator. Therefore, by referring to the determination results by the first and second determination means and determining whether or not to change the luminance of the touch panel, even when the change in illuminance detected by the illuminance sensor is caused by the operation indicator It is possible to prevent changing the brightness of the touch panel and appropriately change the brightness of the touch panel.

  In the display device according to aspect 2 of the present invention, in the above aspect 1, the second determination means (illuminance change detection unit 151, motion detection unit 154) determines whether or not the operation indicator moves within the predetermined time. At the same time, it is preferable to determine whether or not there is a change in illuminance detected by the illuminance sensor within the same predetermined time as described above.

  According to the above configuration, the second determination means determines whether or not the operation indicator moves within a predetermined time, and determines whether or not the change in illuminance detected by the illuminance sensor within the same predetermined time as described above. be able to. Such a determination result indicates with high accuracy the possibility that the change in illuminance detected by the illuminance sensor is caused by the operation indicator. For example, (A) When there is a movement of the operation indicator within the same predetermined time and there is a change in illuminance, there is a high possibility that the change in illuminance is caused by the operation indicator. Also, (B) when there is no movement of the operation indicator and there is a change in illuminance within the same predetermined time, it is highly possible that the change in illuminance is not caused by the operation indicator. On the other hand, (C) when there is no movement of the operation indicator within the same predetermined time and there is no change in illuminance, and (D) there is a movement of the operation indicator within the same predetermined time and there is a change in illuminance. When there is no, there is a possibility that the change in illuminance is caused by the operation indicator between (A) and (B). By referring to such a determination result and determining whether to change the brightness of the touch panel, the brightness of the touch panel can be changed more appropriately.

  In the display device according to aspect 3 of the present invention, in the above aspect 2, in the display device, a sensor-side region including an arrangement position of the illuminance sensor is defined, and the operation indicator is in the sensor-side region. A third determining unit (position determining unit 155) for determining whether or not the luminance changing unit further refers to the determination result of the third determining unit to determine whether to change the luminance; It is preferable.

  According to said structure, it can be determined by the 3rd determination means whether the said operation indicator exists in the said sensor side area | region. Such a determination result indicates the possibility that the change in illuminance detected by the illuminance sensor is caused by the operation indicator. That is, when the operation indicator is in the sensor-side region, the change in illuminance is likely to be caused by the operation indicator, and when the operation indicator is not in the sensor-side region, the change in illuminance is It is unlikely to be attributed to the indicator. By referring to such a determination result and determining whether to change the brightness of the touch panel, the brightness of the touch panel can be changed more appropriately.

  The display device according to aspect 4 of the present invention is the display apparatus according to aspect 3, wherein the brightness changing unit is configured such that (i) the first determination unit does not touch the touch panel with the operation indicator. When it is determined that the distance is longer than the predetermined distance, (ii) the first determination means is that the operation indicator is in contact with the touch panel or is within the predetermined distance from the touch panel. And when the second determination means determines that the operation indicator does not move and the illuminance changes, and (iii) the first determination means contacts the touch panel with the operation indicator. Or the second determination means determines that there is no change in illuminance, and the third determination means determines that the sensor is within the predetermined distance from the touch panel. If it is determined that not in the side area, determines to change the brightness, it is preferable.

  According to said structure, the brightness | luminance of a touch panel can be changed more appropriately by determining that the said brightness | luminance is changed in the case of said (i)-(iii).

  The display device according to aspect 5 of the present invention further includes the proximity sensor 13 in the aspect 3 or 4, and the first determination unit refers to a detection result of at least one of the touch panel and the proximity sensor, and It is determined whether or not the operation indicator is in contact with the touch panel, or whether or not the operation indicator is within a predetermined distance from the touch panel, and the second determination means includes the touch panel and the proximity sensor. With reference to the detection result of at least one of the above and the detection result of the illuminance sensor, it is determined whether or not the operation indicator moves within the predetermined time, and the change in illuminance detected by the illuminance sensor within the predetermined time is determined. The third determination means refers to a detection result of at least one of the touch panel and the proximity sensor. And, the operation indicator may be one to determine whether it is in the sensor-side region.

  According to said structure, it can determine the state of an operation indicator appropriately using a proximity sensor, and can change the brightness | luminance of a touch panel more appropriately.

[Additional Notes]
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention can be used for a display device provided with a touch panel.

1 Information terminal device (display device)
DESCRIPTION OF SYMBOLS 11 Illuminance sensor 13 Proximity sensor 14 Touch panel 15 Control part 151 Illuminance change detection part (2nd determination means)
152 State determination unit (first determination means)
153 Brightness control unit (brightness changing means)
154 Motion detection unit (second determination means)
155 Position determination unit (third determination means)

Claims (5)

A touch panel that accepts input by contact of an operation indicator;
An illuminance sensor;
First determination means for determining whether or not the operation indicator is in contact with the touch panel, or whether or not the operation indicator is within a predetermined distance from the touch panel;
Second determination means for determining presence or absence of movement of the operation indicator within a predetermined time;
With reference to the determination results of the first determination means and the second determination means, it is determined whether or not to change the luminance of the touch panel. When it is determined that the luminance is to be changed, the illuminance detected by the illuminance sensor And a luminance changing means for changing the luminance in accordance with the display device.   The second determining means determines whether or not the operation indicator moves within the predetermined time, and determines whether or not the illuminance sensor detects the change in illuminance within the same predetermined time as described above. The display device according to claim 1. In the display device, a sensor side region including the arrangement position of the illumination sensor is defined,
Comprising a third determination means for determining whether or not the operation indicator is within the sensor-side region;
The display device according to claim 2, wherein the luminance changing unit further determines whether or not to change the luminance with reference to a determination result of the third determining unit. The brightness changing means is
(I) When the first determination means determines that the operation indicator is not in contact with the touch panel, or is separated from the touch panel by the predetermined distance,
(Ii) The first determining means determines that the operation indicator is in contact with the touch panel or is within the predetermined distance from the touch panel, and the second determining means is the operation indicator. And (iii) the first determination means is that the operation indicator is in contact with the touch panel, or within the predetermined distance from the touch panel. When the second determination means determines that there is no change in the illuminance, and the third determination means determines that it is not within the sensor side region,
The display device according to claim 3, wherein it is determined that the luminance is changed. A further proximity sensor,
The first determination means refers to a detection result of at least one of the touch panel and the proximity sensor, whether or not the operation indicator is in contact with the touch panel, or the operation indicator is predetermined from the touch panel. To determine whether it is within the distance of
The second determination means determines whether or not the operation indicator moves within the predetermined time with reference to a detection result of at least one of the touch panel and the proximity sensor and a detection result of the illuminance sensor, and Determine whether there is a change in illuminance detected by the illuminance sensor within a predetermined time,
The third determining means refers to a detection result of at least one of the touch panel and the proximity sensor, and determines whether or not the operation indicator is in the sensor side region. Or the display apparatus of 4.

Images