JP2006350789A - Display device with touch panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent display of an operation switch from being difficult to see due to a step difference in a touch panel display device provided with a protrusion for easily recognizing a target operation range by a tactile sensation, and unnecessary replaying. Prevent touch.
SOLUTION: By providing protrusions 6 and 7 so as to surround the operation switch display areas d1 to dn on the front surface of the touch panel 3, the operation switch display is not difficult to see due to the steps of the protrusions 6 and 7. By setting the positions of the ridges 6 and 7 as the switch non-operation area of the touch panel 3, even if the ridges 6 and 7 are pressed, the switch does not operate, and erroneous operation switch input can be prevented.
[Selection] Figure 1

Description

  The present invention relates to a display device with a touch panel that operates a device by touching a touch panel on a display screen with a fingertip or the like.

2. Description of the Related Art Conventionally, a display device with a touch panel has a touch panel superimposed on a liquid crystal display unit, for example, and a user touches the touch panel with a fingertip from an operation switch display representing the operation content indicated by the liquid crystal display unit. The film-like contact constituting the touch panel comes into contact with the switch operation. Furthermore, a display device has been proposed in which a so-called blind touch can be performed by performing a touch operation without looking at the operation switch display by providing a protrusion at a point to be operated by the operator, that is, an area where the operation switch is displayed. (For example, refer to Patent Document 1).
JP 7-319623 A

  However, the conventional display device provided with the projection has a problem in that it is difficult to see the contents of the operation switch display due to the step of the projection because the projection is provided at substantially the center of the operation switch display.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a display device with a touch panel that can prevent an operation switch display from being difficult to see due to a protrusion step.

  In order to solve the above-described problems, a display device with a touch panel according to the present invention includes a display unit that displays an operation switch, a touch panel unit disposed on a front surface of the display unit, and a protrusion disposed on a front surface of the touch panel unit. The protrusion is provided around an operation switch display area displayed on the display unit. With this configuration, it is possible to prevent the contents of the operation switch display from becoming difficult to see due to the step of the protrusion.

  The display device of the present invention is characterized in that the protrusion is arranged in a region excluding the operation switch display region. With this configuration, even if the ridge is touched with a finger and the ridge is pressed at the same time, the touch panel switch is not turned on, and unnecessary re-input can be prevented.

  Further, the display device of the present invention is characterized in that the protrusion is provided on a translucent sheet separate from the touch panel. With this configuration, when the position of the operation switch display is changed, the position of the ridge can be changed by exchanging the translucent sheet in accordance with the change.

  The present invention provides a display device having an effect that it is possible to prevent the contents of the operation switch display from becoming difficult to see due to the step of the protrusion by providing the protrusion around the operation switch display of the touch panel. Can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a front view of a car navigation device as a display device with a touch panel according to an embodiment of the present invention when the power is turned off, that is, a state in which nothing is displayed on the display unit, and FIG. It is an expanded partial sectional view which follows the AA line of FIG. In FIG. 1, the car navigation device 1 includes a liquid crystal display unit 2, a touch panel (touch panel unit) 3 disposed on the front surface thereof, and an upper panel 4 disposed so as to surround the periphery of the touch panel 3. The liquid crystal display unit 2 may be a reflection type or a backlight type, and a portion viewed from the opening of the upper panel 4 is a display region D, and the entire surface is covered with the touch panel 3. A plurality of operation switch display areas d1 to dn are formed on the left side, the right side, and the lower side of the display area D of the liquid crystal display unit 2. The operation switch display areas d1 to dn are operation switches for displaying information necessary for the user as shown in FIG. 2 when the power of the car navigation apparatus 1 is turned on and the apparatus is activated. Selection items such as a certain “current location”, “destination”, and “menu” are displayed. In the portion of the touch panel 3 corresponding to the operation switch display areas d1 to dn, a vertical protrusion 6 and a horizontal protrusion 7 are formed so as to surround each of the operation switch display areas d1 to dn. The light-sensitive sheet 5 is joined with a transparent double-sided adhesive tape (not shown). The vertical ridge 6 is a continuous ridge, while the horizontal ridge 7 defines the operation switch display areas d1 to dn. The translucent sheet 5 may cover the entire surface of the touch panel 3 or may cover only the periphery of the operation switch display areas d1 to dn. When partially covering, the translucent sheet 5 may be a translucent sheet.

  The touch panel 3 used in the present embodiment is of a general analog resistance film type, and ITO (indium tin oxide), which is a transparent electrode material 3c, 3d, is formed on the opposing surfaces of the upper film 3a and the lower glass 3b. Etc.). The upper film 3a and the lower glass 3b are separated from each other by a certain distance, and have a structure in which they are brought into contact and energized by pressing with a finger or a pen. Further, a dot spacer 3e is provided on the lower glass 3b side in order to prevent erroneous contact due to the deflection of the upper film 3a due to external factors such as the environment. The liquid crystal display unit 2 is fixed through a touch panel support made of rubber or the like. A gap of about 1 mm is provided between the touch panel 3 and the liquid crystal display unit 2 in consideration of deflection at the time of input of the touch panel 3.

  In addition, electrodes are provided on the left and right ends on the upper film 3a side and on both upper and lower sides on the lower glass 3b side, and an XY coordinate system is used to detect which position on the touch panel 3 is pressed. The X coordinate is detected by applying a voltage to the electrode on the upper film 3a side to create a potential gradient in the left-right direction due to the resistance of the transparent conductive material 3c. The X coordinate of is known. Similarly, the Y coordinate can be detected by applying a voltage to the electrode on the lower glass 3b side to create a potential gradient in the vertical direction due to the resistance of the transparent conductive material 3d, and detecting the potential at the contact point through the upper film 3a side. The Y coordinate of the pressed point can be determined by the pressure.

  In this manner, the X coordinate position and the Y coordinate position of the part of the touch panel 3 corresponding to the operation switch display areas d1 to dn are detected, and which operation switch display area is pressed is specified. However, the part which opposes the protrusions 6 and 7 of the translucent sheet | seat 5 of the touchscreen 3 is a switch non-operation area | region. The switch non-operation area mentioned here is an area where the operation switch does not operate even when the area is pressed, and this is a program structure in which the switch does not operate on software, but in terms of hardware, the ridge 6 , 7 is provided so that the dot spacer 3e of the part of the touch panel 3 corresponding to the upper film 3a and the lower glass 3b is in contact with the upper film 3a so that the operator cannot partially press it. May be secured.

  Next, the operation of the display device configured as described above will be described. Images displayed in the display area D and the operation switch display areas d1 to dn of the liquid crystal display unit 2 can be viewed through the translucent sheet 5 and the touch panel 3. In the case of the car navigation apparatus 1, a road map including a facility name and a travel guide route are displayed in the display area D, and various selection items are displayed in the operation switch display areas d1 to dn. When the operator operates a power switch (not shown) of the car navigation device 1 to turn on the power, the display area D displays various selection items in the operation switch display areas d1 to dn together with the menu screen. At that time, the user can recognize that there is a “current location” selection switch at the upper right of the display screen, for example, and after the operator recognizes the switch position, the user can perform a blind touch, that is, roughly register. Bring your fingertip to the upper right of the display screen, touch the ridges 6 and 7 around the operation switch display area d1, and it is easy to have a “current location” selection switch in the area surrounded by the ridges 6 and 7 This makes it possible to recognize and reliably press the operator's desired operation switch display area d1. The same applies when the user presses the “destination” operation switch display area d2, and recognizes that there is a “destination” selection switch that is the second operation object from the upper right, and makes an approximate registration. The second operation switch display area d2 from the upper right is pushed while touching the ridges 6 and 7 with the fingertips.

  Thus, according to this embodiment, since the protrusions 6 and 7 are provided around the operation switch display areas d1 to dn, the user can visually check the rough position of the operation range in a short time, Thereafter, the target operation can be performed with the tactile sensation without diverting the line of sight. Further, it is possible to prevent the contents of the operation switch display from being difficult to see due to the steps of the ridges 6 and 7, thereby making it easy to check the position of the ridges 6 and 7. Therefore, even if the ridges 6 and 7 are pressed, the touch panel switch does not operate, and unnecessary re-input can be prevented. Further, since the translucent sheet 5 is arranged on the front surface of the touch panel 3, when the position of the operation switch display is changed, the translucent sheet 5 is replaced in accordance with the change, so that the position of the protrusion is changed. Can be changed around the operation switch display position.

  In the embodiment described above, the translucent sheet 5 that is separate from the touch panel 3 is used. However, when the touch panel 3 is manufactured without using the separate translucent sheet 5, the translucent sheet 5 protrudes on the transparent substrate. The strips 6 and 7 may be integrally formed. Moreover, although the protrusions are the vertical protrusions 6 and the horizontal protrusions 7, the vertical protrusions 6 may be provided for each of the operation switch display areas d1 to dn, and the vertical protrusions and the horizontal protrusions are made continuous. It may be formed in an L shape or a U shape.

  Moreover, although the vertical protrusion 6 and the horizontal protrusion 7 were provided so that each circumference | surroundings of each operation switch display area | region d1-dn might be enclosed, the character information and operation switch which were displayed on the operation switch display area d1-dn were recognized. The same effect can be obtained if the area does not hinder the recognition of information (pictures, icons, etc.).

  As described above, the display device according to the present invention prevents the contents of the operation switch display from becoming difficult to see due to the step of the protrusion by providing the protrusion around the operation switch display of the touch panel. It is useful as a display device with a touch panel that operates the device by touching the touch panel on the display screen with a fingertip, etc. In addition to the car navigation device, various ticket vending machines, ATMs, etc. It can be applied to a typical touch panel type liquid crystal display device.

(A) Front view of the car navigation device as a display device with a touch panel in an embodiment of the present invention in a state when the power is turned off, (b) An enlarged partial cross-sectional view taken along line AA in FIG. The front view of the state at the time of power-on in the car navigation apparatus as a display apparatus with a touch panel in the embodiment of the present invention

Explanation of symbols

1 Car navigation device 2 Liquid crystal display 3 Touch panel (touch panel)
4 Upper panel 5 Translucent sheet 6 Vertical ridge 7 Horizontal ridge D Display area d1 to dn Operation switch display area

Claims (3)

  A display unit that displays an operation switch; a touch panel unit disposed on a front surface of the display unit; and a protrusion disposed on a front surface of the touch panel unit, wherein the protrusion is an operation displayed on the display unit. A display device with a touch panel, which is provided around a switch display area.   The display device with a touch panel according to claim 1, wherein the protrusion is disposed in an area excluding the operation switch display area.   The display device with a touch panel according to claim 1, wherein the protrusion is provided on a translucent sheet separate from the touch panel unit.

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