JP4450657B2 - Display device - Google Patents

Description

  The present invention relates to a display device using a liquid crystal display panel or the like, and more particularly to a display device having a dual view display function and an input function using a touch panel.

  The liquid crystal display panel has a liquid crystal layer having an anisotropic dielectric constant injected between two glass substrates, and passes through the glass substrate by adjusting the strength of an electric field applied to the liquid crystal layer. It is a display that adjusts the amount of light and displays a desired still image or moving image. Such a liquid crystal display panel is excellent in weight reduction, thinning, low power consumption, etc., and is not limited to familiar devices such as a mobile phone, a car navigation system, a PDA, a personal computer, and a television receiver, but also a measuring device, a medical device, etc. It is used as a display for general equipment and industrial equipment.

  By the way, in the apparatus using the said liquid crystal display panel, there exist some which can operate the still image and moving image which are displayed on a liquid crystal display panel not only by operation of a remote control but by operation of a touch panel. The touch panel is arranged on the front surface of the liquid crystal display panel, and a finger is placed on a touch operation screen on which a scroll bar, a key switch, or the like is displayed according to an operation selection instruction displayed on the liquid crystal display panel. Touch operation control is possible as if a pen or a pen touched. The contents of the touch operation screen itself become a switch and can be operated intuitively. In addition to improving the visibility and operability, various functions can be freely controlled. As a touch panel system, an electromagnetic induction type, an electric resistance type, a capacitive coupling type, a pressure sensitive type, and the like are known.

  On the other hand, such a liquid crystal display panel can display not only video display in television reception but also image data from image source sources such as video, CD, and DVD. Usually, when displaying image data A from a certain kind of image source source, when displaying image data B from another image source source, the input source is switched off and only the image data B is liquid crystal. The image is displayed on the entire surface of the display panel. As another method, the display area of the liquid crystal display panel is divided into a plurality of parts, and image data from various image source sources are displayed in the respective display areas. However, in this case, since the images displayed in the respective display areas can be seen at the same time, there is a problem that only the images that the viewer wants to view cannot be viewed in a concentrated manner. In addition, since images are displayed in a plurality of divided display areas, there is a problem that an image that a viewer wants to view becomes small.

  Therefore, by adopting the dual view display technique disclosed in Patent Document 1 proposed by the present applicant, dual view display can be performed. The dual view display is to simultaneously display image data from a plurality of image source sources without displaying a small image desired by the viewer. That is, the dual view display is to simultaneously display a plurality of different images in a plurality of display directions respectively corresponding to a plurality of viewpoints on the same display screen.

Here, the basic principle of the dual view display will be described with reference to FIG. FIG. 11 is a diagram for explaining the basic principle of the dual view display. A parallax barrier (optical system separating element) 2 is arranged on the entire surface of the liquid crystal display panel 1 having a plurality of pixels a and b. The parallax barrier 2 is a screen having a plurality of vertical translucent slits separated by opaque regions. The light that has passed through the pixels a of the liquid crystal display panel 1 reaches the viewer A side located at a predetermined viewing angle with respect to the display surface of the liquid crystal display panel 1 through the translucent slits of the parallax barrier 2. . Further, the light transmitted through the pixel b of the liquid crystal display panel 1 passes through the translucent slit of the parallax barrier 2 to the viewer B side positioned at a predetermined viewing angle with respect to the display surface of the liquid crystal display panel 1. To reach. Different images displayed on the liquid crystal display panel 1 are made visible only by a plurality of translucent slits of the parallax barrier 2 from a predetermined region in the space. Thereby, viewer A and viewer B can see different images, respectively.
JP 2003-177357 A

  By the way, whether the person who touched the touch panel is the viewer A when trying to operate the touch panel by combining the dual view display technology disclosed in Patent Document 1 and the touch panel method described above. It is necessary to identify whether the viewer is the viewer B, and to make the operation of the touch panel correspond to the image viewed by the viewer A or the viewer B.

  However, in the conventional touch panel, the coordinates where the finger or pen actually touched the touch operation screen are calculated, and the still image or the moving image displayed at the calculated coordinates is operated. For this reason, it was not possible to specify the direction in which the finger or pen approached the touch operation screen and operated, that is, the direction in which the touch operation was performed. For this reason, it was not possible to perform an appropriate operation on the image that the viewer is viewing.

  The present invention has been made in order to solve the above-described problems, and is equipped with a touch panel capable of performing an operation suitable for an image visually recognized by a viewer in a display device capable of dual view display. Provided display device.

In order to solve the above problems, a display device according to an aspect of the present invention can be viewed from an image that can be viewed from the first viewing angle direction and a second viewing angle direction that is different from the first viewing angle direction. Display means for simultaneously displaying images that can be displayed; first input means for inputting first image data and first icon data for displaying an image corresponding to the first viewing angle direction; and corresponding to the second viewing angle direction The second input means for inputting the second image data and the second icon data for displaying the processed image, and the data inputted from the first input means and the second input means are supplied to the display means, and the dual view display is performed. Display control means for performing, position calculation means for calculating the display position of the display means designated by the user, and an icon displayed at the display position calculated by the position calculation means is the first icon data and Determination means for determining which of the second icon data is included, and the display control means defines the image data corresponding to the icon determined by the determination means as the icon among the first image data and the second image data. following a command, viewed it contains a data control means for controlling a display area of the icon based on the first icon data inputted from the first input means, the icon based on the second icon data inputted from the second input means The display area is supplied to the display means so as not to overlap.

  Preferably, the display control means superimposes an icon display area based on the first icon data input from the first input means and an icon display area based on the second icon data input from the second input means. A display area determining means for determining whether or not to perform the icon display area included in the image corresponding to the first viewing angle direction and the second viewing angle direction when the display area determining means determines to superimpose The non-superimposition control is performed by changing at least one of the display positions so that the display area of the icon included in the image corresponding to is not superimposed.

  According to the display device of the present invention, the image and icon that can be viewed from the first viewing angle direction and the image and icon that can be viewed from the second viewing angle direction are displayed at the same time, and the icon displayed at the position indicated by the user is displayed. Data supplied to the display means can be controlled in accordance with the defined instructions. Thereby, an operation suitable for an image visible from the first viewing angle direction and an operation suitable for an image visible from the second viewing angle direction can be performed. Further, non-superimposition control is performed so that the display area of the first icon data and the display area of the second icon data are not superimposed. Thereby, the icon for the first viewing angle direction and the icon for the second viewing angle direction are not overlapped and arranged according to an instruction from the user for the image in one viewing angle direction. It is possible to prevent the manipulation of the image in the viewing angle direction as much as possible. Further, for the purpose of improving the identification accuracy of the icon, by obtaining the direction of change of the finger position from the user, the user who indicates the icon is either the user in the first viewing angle direction or the user in the second viewing angle direction. Can be identified, and an operation suitable for the image being viewed by the user can be performed. Further, it is possible to prevent an image in another viewing angle direction from being manipulated by an instruction from the user with respect to an image in any one viewing angle direction.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a diagram for explaining an internal configuration example of the liquid crystal display device according to the present embodiment. The liquid crystal display device includes a liquid crystal display panel 11 using a dual view display technology, and a capacitive coupling system that is provided on the entire surface of the liquid crystal display panel 11 and is made of a transparent material that does not hinder the display on the liquid crystal display panel 11. Touch panel 12, touch position detection circuit 14 that calculates touch coordinates from current flowing through touch panel 12, and image operation function that operates image data displayed on liquid crystal display panel 11 based on the touch coordinates calculated by touch position detection circuit 14. And an image creation function for creating image data for the viewer A and image data for the viewer B on the liquid crystal display panel 11, and displaying the manipulated / created image data on the liquid crystal display panel 11. A control CPU 13 that performs control, and a display timing required for the liquid crystal display panel 11 under the control of the control CPU 13 Display information for displaying the icon, such as the liquid crystal display controller 15 that generates the signal, the shape, color, display position, and characters displayed in the icon for the viewer A, when the icon is selected Memory medium 16 storing a plurality of types of icon data including operation information for specifying the operation content, memory medium 17 storing a plurality of types of icon data including icon display information and operation information for viewer B, viewer A The image source source 18 has image data for the viewer B, and the image source source 19 has image data for the viewer B.

  The control CPU 13 superimposes the icon data received from the memory medium 16 in which icon data including the display information and operation information of the icon for the viewer A is stored on the image data received from the image source 18. Further, the icon data received from the memory medium 17 storing the icon data including the display information and operation information of the icon for the viewer B is superimposed on the image data received from the image source source 19. Then, the control CPU 13 transmits the superimposed image data for the viewer A and image data for the viewer B to the liquid crystal display controller 15.

  The liquid crystal display controller 15 processes the image data for the viewer A and the image data for the viewer B transmitted from the control CPU 13 so that the pixel distribution is suitable for the pixel distribution of the dual view display technology, The image data is transmitted to the liquid crystal display panel 11 as one image data. At this time, the liquid crystal display controller 15 also transmits a control signal necessary for controlling the display operation of the liquid crystal display panel 11. Specifically, the liquid crystal display controller 15 drives the gate driver and the source driver based on the image data. The gate driver applies an operation voltage for driving a plurality of pixels (not shown) of the liquid crystal display panel 11. The source driver applies a write voltage for driving a plurality of pixels (not shown) of the liquid crystal display panel 11.

  The liquid crystal display panel 11 has a liquid crystal layer having an anisotropic dielectric constant injected between two substrates (not shown), and transmits a back through the substrate according to the strength of an electric field applied to the liquid crystal layer. The amount of light from a light (not shown) is adjusted to display an image. The parallax barrier is a screen that has a plurality of vertical light-transmitting slits that are superimposed on the entire surface of the liquid crystal display panel 11 and separated by opaque regions.

  Here, when performing dual view display, for example, adjacent pixels of the liquid crystal display panel 11 may be driven in accordance with the image data for the viewer A or the image data for the viewer B. In other words, adjacent pixels are driven according to image data for different directions. It should be noted that every other pixel may be driven according to different image data, or every other pixel, such as every second or every third. Of course, in any case, it may be set according to the width of the translucent slit of the parallax barrier. The pixels in this embodiment are driven based on a control signal from the liquid crystal display controller 15. Accordingly, as described with reference to FIG. 11, the light that can be seen through the plurality of translucent slits of the parallax barrier can be seen only from a specified region in the space. The image according to the image data can be viewed, and the viewer B can view the image according to the image data for the viewer B. Note that the image data for the viewer A and the image data for the viewer B may be image data in television reception, or image data from a source source that is a playback device that plays back video, CD, DVD, or the like. Any of these may be used.

  The sound corresponding to each image is output from a speaker (not shown) and transmitted to each of the viewers A and B. For example, by using a speaker having a listening directionality, It is possible to transmit only the sound corresponding to each video to the viewer A and the viewer B.

  Next, the touch panel 12 has a transparent electrode. When a conductor such as a finger is brought close to the touch panel 12, capacitive coupling occurs and a current flows. In the present embodiment, the user's finger is described as an example of the conductor. However, the present invention is not limited to this, and a dedicated pen or the like may be used. The touch position detection circuit 14 measures this current, calculates the coordinates at which the conductor is approaching, and transmits it to the control CPU 13.

  The control CPU 13 determines the relationship between the coordinates sent from the touch position detection circuit 14 and the display position information included in the icon data of the displayed icon. Specifically, it is determined whether or not there is an icon that includes the coordinates sent from the touch position detection circuit 14 in the display area. If there is no icon, no processing is performed. If there is an icon, the process defined in the operation information included in the icon data is performed. For example, when the content of the process defined in the icon operation information is to display a specific icon, the icon data of the specific icon is read from the memory medium 16 or the memory medium 17 and the image source 18 Alternatively, the image data is superimposed on the image data from the image source 19. If the content of the process defined in the operation information of the icon is control to the image source source 18 or the image source source 19, a control signal suitable for this is transmitted to the image source source 18 or 19, and based on the control signal Image data is input.

  Next, an example of a screen when dual view display is performed with the above-described configuration will be specifically described. FIG. 2 illustrates how the liquid crystal display panel 11 looks when viewed from the viewer A side and how it looks when viewed from the viewer B side when dual view display is performed. FIG.

  FIG. 2A illustrates a case where adjacent pixels of the liquid crystal display panel 11 are driven by the liquid crystal display controller 15 in accordance with an image for the viewer A or an image for the viewer B and are displayed as one image. It is an image. The pixels of the liquid crystal display panel 11 of this embodiment are driven so that images for the viewer A and images for the viewer B are alternately displayed every other pixel.

  FIG. 2B shows how the liquid crystal display panel 11 is viewed from the viewer A side. The viewer A can visually recognize an image of a snowy mountain as an image for the viewer A, and icons arranged at the upper left and lower right from the center of the screen as an icon for the viewer A.

  FIG. 2C shows how the liquid crystal display panel 11 is seen from the viewer B side. The viewer B can visually recognize the map image as the viewer B image and the icons arranged at the upper right and lower left from the center of the screen as the viewer B icon.

  Next, the arrangement of icons will be described. 3 and 4 are diagrams for explaining the arrangement when the icon display areas are not superimposed.

  3A and 4A, the image data for the viewer A and the image data for the viewer B from the control CPU 13 are displayed on the liquid crystal display panel 11 as one image data by the liquid crystal display controller 15. It is a displayed image. FIGS. 3B and 4B are images that can be viewed by the viewer A when the icons of FIGS. 3A and 4A are displayed on the liquid crystal display panel 11. is there. FIGS. 3C and 4C are images that can be viewed by the viewer B when the icons of FIGS. 3A and 4A are displayed on the liquid crystal display panel 11. is there.

  As described with reference to FIGS. 2 to 4, the memory medium 16 and the memory medium are arranged so that the display position of the icon A for the viewer A and the display position of the icon B for the viewer B do not overlap. 17. For example, display position information in which the display position of the icon B for the viewer B is the screen left area of the liquid crystal display panel 11 so that the display position of the icon A for the viewer A is the screen left area of the liquid crystal display panel 11. Is previously stored in the memory medium 16 and the memory medium 17. For this reason, it is possible to control the icon display area so as to be divided into viewer A and viewer B. In this way, non-superimposition control is performed in which the icon A for the viewer A and the icon B for the viewer B are not superimposed. That is, as shown in FIGS. 2 to 4, even when the icon A for the viewer A and the icon B for the viewer B are simultaneously displayed on the liquid crystal display panel 11, the viewer A The viewable icon A and the icon B that can be viewed by the viewer B are arranged at different coordinates so as not to be superimposed. For this reason, misrecognition can be prevented as much as possible. For example, since icon A and icon B are not displayed overlapping each other, it is possible to prevent viewer A from selecting icon B and viewer B from selecting icon A as much as possible. It is possible to perform an operation suitable for the image that the person is viewing.

  As the non-superimposition control in the present embodiment, the control CPU 13 determines whether or not the icon A and the icon B are superimposed based on the received display position information of the icon A for the viewer A and the icon B for the viewer B. It may be determined to change the display position information of at least one of the icon A and the icon B received when it is determined to superimpose and to move the icon, thereby avoiding superposition. That is, when the control CPU 13 supplies the icon A stored in the memory medium 16 and the icon B stored in the memory medium 17 to the liquid crystal display controller 15, the control CPU 13 determines from the display position information of the icon A and the icon B. Then, it is determined whether or not the icon display areas of each other overlap. When the control CPU 13 determines that the icons are superimposed, the control CPU 13 performs control to change the display position information of one or the other icon. Thereby, it can display so that one or a mutual icon may move and a mutual icon display area may not overlap.

  As the non-superimposition control in the present embodiment, the control CPU 13 determines whether or not the icon A and the icon B are superimposed based on the received display position information of the icon A for the viewer A and the icon B for the viewer B. It may be determined to change the display timing of at least one of the icon A and the icon B received when it is determined to superimpose and perform a process of shifting the display temporally to avoid superposition. That is, when the control CPU 13 supplies the icon A stored in the memory medium 16 and the icon B stored in the memory medium 17 to the liquid crystal display controller 15, the control CPU 13 determines from the display position information of the icon A and the icon B. Then, it is determined whether or not the icon display areas of each other overlap. And control CPU13 performs control which changes the display timing of one or each other's icon, when it is judged that it has overlapped. Thereby, since the timing at which one or each other's icon is displayed can be temporally different, it is possible to display the icons so that the icon display areas do not overlap each other. Specifically, when the display areas of the icons A and B are superimposed, the superimposed display can be avoided by controlling the icon B to be displayed for a few seconds after the icon A is displayed for a few seconds.

  FIG. 5 is a diagram for explaining the arrangement when a part of the icon display area is superimposed. As shown in FIG. 5, the lower right part of the display area of the icon A for the viewer A and the upper left part of the display area of the icon for the viewer B are superimposed. In such a case, the viewer A can only view the icon A, and the viewer B can only view the icon B. Therefore, the viewer A selects the icon B by mistake, or the viewer B selects the icon A. It is conceivable to make a mistake. That is, there is a problem that erroneous recognition is likely to occur.

  For example, when the viewer A intends to select the icon A and selects the lower right portion of the display area of the icon A, the icon B is selected, the contents of the process defined in the icon B are executed, and the viewer There arises a disadvantage that the image for B is controlled. On the contrary, when the viewer B intends to select the icon B and selects the upper left part of the display area of the icon B, the icon A is selected, and the content of the process defined in the icon A is executed. There is a disadvantage that the image for A is controlled. Such inconvenience is not limited to the case where the icons are superimposed, but also when the positions of different viewer icons are close (for example, when the extension of the icon display area is adjacent to or close to each other). It can occur as well.

  In the present embodiment, in order to solve the above problem, when the selection direction is determined from which direction the selection is made, the selected icon is determined, and the selected icon is an icon for the selection direction The processing contents defined in the operation information of the selected icon can be executed. Hereinafter, description will be made with reference to FIGS.

  6 and 7 are diagrams for explaining the basic principle of the selection position (user finger position) detection method based on the capacitive coupling method employed in the present embodiment.

  FIG. 6 shows a one-dimensional resistor sandwiched between electrodes A and B. In the touch panel 12 according to the present embodiment, a transparent electrode having a two-dimensional extension exhibits the same function as a one-dimensional resistor described below.

  Each of the electrode A and the electrode B is connected to a resistance r for current-voltage conversion. An AC voltage e having the same homologous potential is applied between the electrode A and the ground and between the electrode B and the ground. At this time, in a normal state where selection or the like is not performed, the electrode A and the electrode B are at the same potential. Therefore, no current flows between the electrode A and the electrode B.

On the other hand, when a finger or the like touches the one-dimensional resistor (for example, touches position C), current flows through electrode A and electrode B. When the human impedance is Z, the current flowing through the electrode A is i ₁ , and the current flowing through the electrode B is i ₂ , the following equation is established. Note that a resistance R ₁ from the contact position C to the electrode A by the finger, a resistance R ₂ from the contact position C to the electrode B, and an overall resistance R = R ₁ + R _{2 are} assumed.

_{e = r · i 1 + R} 1 · i 1 + (i 1 + i 2) · Z ... ( Equation 1)
e = r · i ₂ + R ₂ · i ₂ + (i ₁ + i ₂ ) · Z (Formula 2)
From the above equations 1 and 2, the following equations 3 and 4 are obtained.

i ₁ · (r + R ₁ ) = i ₂ · (r + R ₂ ) (Formula 3)
i ₂ = i ₁ · (r + R ₁ ) / (r + R ₂ ) (Formula 4)
Substituting Equation 4 into Equation 1 yields Equation 5 below.

e = r · i ₁ + R ₁ · i ₁ + (i ₁ + i ₁ · (r + R ₁ ) / (r + R ₂ )) · Z
= I ₁ · (R · (Z + r) + R ₁ · R ₂ + 2Z · r + r ² ) / (r + R ₂ ) (Formula 5)
From the above equation 5, the following equation 6 is obtained.

i ₁ = e · (r + R ₂ ) / (R · (Z + r) + R ₁ · R ₂ + 2Z · r + r ² ) (Formula 6)
Similarly, the following Expression 7 is obtained.

i ₂ = e · (r + R ₁ ) / (R · (Z + r) + R ₁ · R ₂ + 2Z · r + r ² ) (Formula 7)
Here, when the ratio of R ₁ and R ₂ is expressed using the overall resistance R, Expression 8 is obtained.

_{R 1 / R = (2r /} R + 1) · i 2 / (i 1 + i 2) -r / R ... ( Equation 8)
Since r and R are known, R ₁ / R can be determined from Equation 8 if the current i ₁ flowing through the electrode A and the current i ₂ flowing through the electrode B are obtained by measurement. Note that R ₁ / R does not depend on the impedance Z including a human touched by a finger. Therefore, as long as the impedance Z is not zero or infinite, Formula 8 is satisfied, and changes and states due to people and materials can be ignored.

Next, the relational expression in the one-dimensional case will be enlarged and explained in the two-dimensional case with reference to FIG. An alternating voltage having an isotopic potential is applied to the electrodes at the four corners of the transparent electrode, and currents flowing through the four corners of the transparent electrode by contact with a finger or the like are denoted by i ₁ , i ₂ , i ₃ and i ₄ , respectively. In this case, the following expression is obtained by the same calculation as the above-described calculation. X is the coordinate of the contact position on the transparent electrode in the X-axis direction, and Y is the coordinate of the contact position on the transparent electrode in the Y-axis direction. K ₁ is an offset, and k ₂ is a magnification. k ₁ and k ₂ are constants that do not depend on human impedance.

X = k ₁ + k ₂ · (i ₂ + i ₃ ) / (i ₁ + i ₂ + i ₃ + i ₄ ) (Equation 9)
Y = k ₁ + k ₂ · (i ₁ + i ₂ ) / (i ₁ + i ₂ + i ₃ + i ₄ ) (Equation 10)
Based on Equation 9 and Equation 10 above, the contact position can be calculated from the measured values of i _{1 to} i ₄ through which four currents flow.

  FIG. 8 schematically shows the time course of the current flowing in one corner and the total current value in the four corners in an ideal state when an icon is selected with a finger or the like. If the finger or the like approaches, the current value increases, and if the same part is kept pressed at the same level after touching, a constant current value flows, and the current value decreases by release (release).

  In addition, touching and releasing means monitoring the total current value of the current values at the four corners, touching if the total current value exceeds a certain threshold, and continuing to touch if the total current value is greater than or equal to the threshold. It has been released or scrolled, and released if the total current value falls below the threshold.

  In the present embodiment, the total current value is used as an index for a new determination criterion, and the selection direction (input direction) is determined from which direction the selection is made. The determination method will be described with reference to FIG.

Conventionally, when the total current value is equal to or less than a certain value, the coordinate calculation is not performed from the current values at the four corners because it is not touched. Moreover, even if it is a case where it was calculated, the said coordinate was not utilized effectively for a certain process. This is inconsistent with the fact that the calculated coordinates (R ₁ / R) do not depend on the impedance Z even if the total current value is below a certain value in principle, so that the correct coordinates can be calculated. become. However, in reality, even if the total current value is less than or equal to a certain value, the calculated coordinates (R ₁ / R) flow if the measured current value depends on the impedance Z and the impedance Z is small. The current value becomes small and includes an error. In other words, the S / N ratio is poor, and even if the same point is touched, the coordinates vary.

  FIG. 9 shows the coordinates 31 calculated in the past when the measured total current value is greater than or equal to a certain value, and whether or not the total current value is greater than or equal to a certain value as the finger approaches. The coordinate 32 calculated regardless of whether the total current value is equal to or greater than a certain value as the finger is released, the coordinate vector 34 when being touched, and the released coordinate vector 34 are released. A coordinate vector 35 is shown.

  The coordinates 32 calculated as the finger approaches and the coordinates 33 calculated as the finger moves away are calculated when the total current value is less than a certain value, and are conventionally used coordinates 31. Since the S / N ratio is poor compared to

  Here, the coordinate vector 34 when touched can be calculated from the temporal transition of the coordinates 32 calculated when the total current value is less than a certain value. It is possible to determine the direction when touched from the direction specified from the coordinate vector 34. In FIG. 9, since the coordinate vector 34 at the time of touching is directed from left to right, it can be determined that the touch is made from left to right.

  Moreover, the coordinate vector 35 at the time of release can be calculated from the temporal transition of the coordinates 33 calculated when the total current value is less than a certain value. It is possible to determine the direction when released from the direction specified from the coordinate vector 35. In FIG. 9, since the coordinate vector 35 at the time of release is directed from the right to the left, it can be determined that the release was performed from the right to the left. Accordingly, it can be determined that the coordinates 31 shown in FIG. 9 are input from the left direction. That is, referring to FIG. 1 or FIG. 11, it can be recognized that the viewer A has selected an icon or the like.

  In the touch panel 12 having the transparent electrode in the present embodiment, capacitive coupling occurs and a current flows when a conductor such as a finger approaches. The touch position detection circuit 14 measures this current, calculates XY coordinates, and transmits the current value and XY coordinates to the control CPU 13. Then, the control CPU 13 identifies the input direction from the temporal transition of the XY coordinates when the current value does not exceed the threshold, and coordinates between the XY coordinates when the current value exceeds the threshold and the displayed icon. Determine the relationship and identify the selected icon. Then, the control CPU 13 performs control so that the process defined in the operation information of the specified icon is performed when the specified icon is the identified icon for the input direction. On the other hand, when the specified icon is not the identified input direction icon, the control CPU 13 performs control so as not to perform the process defined in the operation information of the specified icon. Thus, when the viewer A selects the icon B by mistake, or when the viewer B selects the icon A by mistake, etc., it is defined in the operation information of the selected icon. Therefore, malfunctions can be prevented.

  FIG. 10 is a flowchart for explaining the touch direction determination operation control in the liquid crystal display device having the above-described configuration.

  First, in step (hereinafter referred to as S) 1, the total current value measured by the touch position detection circuit 14 is monitored. In S2, it is determined whether or not the total current value monitored in S1 tends to increase. That is, it is determined whether or not a conductor such as a finger tends to approach the touch panel 12. When it is determined in S2 that there is no tendency to increase, since a conductor such as a finger is not approaching, the process proceeds to S1 and monitoring is continued. On the other hand, when it is determined in S2 that there is an increasing tendency, a process of calculating a coordinate vector at the time of touch is performed in S3. That is, processing for determining the input direction of touch is performed.

  Next, in S4, processing is performed to determine whether or not the total current value of the Z axis has reached a threshold value or more. That is, processing for determining whether or not the touch has been performed is performed. When the threshold value has not been reached in S4, since a conductor such as a finger is approaching but not touched, the process proceeds to S1 and monitoring is continued. On the other hand, when the threshold value is reached in S4, a process of calculating the touched coordinates in S5 is performed.

  Next, in S6, processing for determining whether or not the input direction icon matches the touch coordinates is performed. That is, the coordinate relationship between the coordinates calculated in S5 and the displayed icon is determined, and the selected icon is specified. Then, a process for determining whether or not the specified icon is an icon for the input direction determined in S3 is performed. If it is determined in S6 that they do not match, since there is no icon for the input direction in the touched coordinates, the process proceeds to S1 and monitoring is continued.

  On the other hand, when it is determined in S6 that a match is made, a process is performed in S7 to determine whether or not the release direction matches the input direction. That is, contrary to S2 and S3, it is determined whether the total current value tends to decrease, and processing for calculating the coordinate vector at the time of release is performed. Then, processing is performed to determine whether or not the input directions specified from the coordinate vector at the time of release and the coordinate vector at the time of touch are the same.

  When it is determined in S7 that they do not match, the touch is invalidated as an erroneous operation, and the process proceeds to S1 to continue monitoring. On the other hand, when a matching determination is made in S7, a process for performing an operation suitable for the icon specified in S8 is performed. Various processes such as displaying different icons or requesting a specific operation from the image source source are performed according to the operation contents of the icons. After the operation of the icon is finished, the process proceeds to S1 and monitoring is continued.

  As described above, when it is determined in S6 and S7 that they coincide with each other, the control CPU 13 in this embodiment performs control so that the process defined in the operation information of the specified icon is performed in S8, and S6 or S7. If it is determined that any one of these does not match, control is performed so that the process defined in the operation information of the specified icon is not performed in S8. Thereby, the accuracy of touch direction discrimination operation control can be improved.

  The touch direction determination operation control in the liquid crystal display device has been described above with reference to FIG. 10, but is not limited thereto. As the touch direction determination operation control, for example, in order to improve the operation response speed of the icon, the process of determining whether or not the release direction in S7 in FIG. 10 matches the input direction is omitted, and the input in S6 is performed. Processing for determining whether or not the direction icon and the touch coordinates match may be performed, and if they match, an operation suitable for the icon may be performed in S8.

  Further, as touch direction determination operation control, for example, a process of determining whether or not the input direction icon and the touch coordinates in S6 of FIG. 10 match in order to reduce power consumption and the burden on the touch position detection circuit 14. Is omitted, and after the process of calculating the touched coordinates in S5, the process of determining whether or not the release direction in S7 matches the input direction is performed. In S8, an operation suitable for the icon may be performed.

  When the positional relationship between the different icons for viewers is close by performing the touch direction determination operation control in the liquid crystal display device described with reference to FIG. 10 (for example, when the extension of the icon display area is adjacent or close to each other) Etc.), it is possible to prevent erroneous recognition and malfunction. Even when part or all of the different viewer icons overlap, the input direction is monitored, so that it can be accurately recognized and operated.

  As described above, in the present embodiment, the image and icon that can be viewed from the viewer A and the image and icon that can be viewed from the viewer B are simultaneously displayed on the liquid crystal display panel 11 and calculated by the touch position detection circuit 14. Processing defined in the operation information of the icon displayed at the coordinates is performed. Thereby, an operation suitable for an image that can be viewed by the viewer A and an operation suitable for an image that can be viewed by the viewer B can be performed.

  Further, as described with reference to FIGS. 3 and 4, non-superimposition control is performed so that the icon for the viewer A and the icon for the viewer B are not superimposed. For example, the icon data is stored in advance in the memory media 16 and 17 so that the display position of the icon for the viewer A and the display position of the icon for the viewer B do not overlap. Further, when superimposing, the control CPU 13 changes the display position information included in the icon data of one or each icon, and moves the icon. Furthermore, when superimposing, the control CPU 13 shifts the display timing of one or each other icon. Thereby, the icon for the viewer A and the icon for the viewer B are not superimposed, and for example, the viewer A selects the icon for the viewer B or the viewer B It is possible to prevent the selection of the icon for the viewer A as much as possible.

  As described with reference to FIGS. 5 to 10, the control CPU 13 determines the input direction and the selected icon, and the selected icon is selected when the selected icon is an icon for the input direction. The contents of the process defined in the icon operation information are executed. That is, by determining the input direction, it is possible to identify whether the icon is selected by the viewer A or the viewer B, so that each of the viewer A and the viewer B views The operation suitable for the image being performed can be performed. For example, even when the viewer A selects the icon for the viewer B, the process defined in the operation information of the selected icon is not performed. This prevents an erroneous operation / selection such that the process defined in the operation information of the icon selected by the viewer A is executed even though the viewer B has not selected the icon, Icon identification accuracy can be improved.

  In the above-described embodiment, the capacitive coupling type touch panel has been described as an example. However, the present invention is not limited to this, and an electromagnetic induction method, an electric resistance method, a capacitance method, a pressure sensitive method, etc. Any device that can perform an intuitive operation (for example, a tablet) may be used. In addition, as the touch panel for performing the touch direction discrimination operation control, any touch panel that can monitor the input direction, such as an electromagnetic induction type, an ultrasonic surface acoustic wave type, or the like may be used.

  In the embodiment described above, an example has a function of performing dual view display based on the image data for the viewer A and the image data for the viewer B by the liquid crystal display controller 15 under the control of the control CPU 13. Explained. However, the present invention is not limited to this, and the liquid crystal display controller 15 may further have a function of performing a single view display based on either the image data for the viewer A or the image data for the viewer B. Good. In the single view display, an image based on either the image data for the viewer A or the image data for the viewer B is displayed on the liquid crystal display panel 11, and the image is displayed on the viewer A and the viewer B. Is to be able to watch. In such a case, by providing a view changeover switch for selecting two modes of dual view display or single view display, the view changeover switch is operated to read by the control CPU 13. The control program to be changed may be changed.

  In the above-described embodiment, an example in which a parallax barrier having a plurality of translucent slits is used to perform dual view display has been described. However, the present invention is not limited to this, and a slit forming portion having a liquid crystal layer such as the liquid crystal display panel 11 and having a plurality of vertical slits formed in accordance with the strength of the electric field applied to the liquid crystal layer may be used. . In this case, a plurality of vertical slits may appear in the case of dual view display, and a plurality of vertical slits may be deleted in the case of single view display.

  In the above-described embodiment, the flat panel type liquid crystal device has been described. The flat panel type is not limited to the liquid crystal display panel 11 and can be applied to a plasma display or an organic EL display.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure for demonstrating the internal structural example of the liquid crystal display device in this Embodiment. To explain how the liquid crystal display panel according to this embodiment is viewed from the viewer A side and how it is viewed from the viewer B side when dual view display is performed. FIG. It is a figure for demonstrating arrangement | positioning (example 1) of the icon in this Embodiment. It is a figure for demonstrating arrangement | positioning (example 2) of the icon in this Embodiment. It is a figure for demonstrating arrangement | positioning (example 3) of the icon in this Embodiment. It is a figure for demonstrating the basic principle of the capacitive coupling system (one-dimensional) in this Embodiment. It is a figure for demonstrating the basic principle of the capacitive coupling system (two-dimensional) in this Embodiment. It is a figure for demonstrating the determination method of the touch and release in this Embodiment. It is a figure for demonstrating the determination method of the input direction in this Embodiment. It is a flowchart for demonstrating the touch direction discrimination | determination operation control in this Embodiment. It is a figure for demonstrating the basic principle of a dual view display.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,11 Liquid crystal display panel, 2 Parallax barrier, 12 Touch panel, 13 Control CPU, 14 Touch position detection circuit, 15 Liquid crystal display controller, 16, 17 Memory medium, 18, 19 Image source source.

Claims (2)

Display means for simultaneously displaying an image that can be viewed from a first viewing angle direction and an image that can be viewed from a second viewing angle direction different from the first viewing angle direction;
First input means for inputting first image data and first icon data for displaying an image corresponding to the first viewing angle direction;
Second input means for inputting second image data and second icon data for displaying an image corresponding to the second viewing angle direction;
Display control means for supplying data inputted from the first input means and the second input means to the display means and performing dual view display;
Position calculating means for calculating the display position of the display means designated by the user;
Determining means for determining whether the icon displayed at the display position calculated by the position calculating means is the first icon data or the second icon data;
Wherein the display control unit,
Of the second image data and the first image data, in accordance with said determination means is defined the image data corresponding to the icon is determined to the icon instruction, look including data control means for controlling,
The display means so that the icon display area based on the first icon data input from the first input means and the icon display area based on the second icon data input from the second input means do not overlap. Supply to the display device. The display control means includes
It is determined whether or not the icon display area based on the first icon data input from the first input means overlaps with the icon display area based on the second icon data input from the second input means. A display area determination unit;
When it is determined by the display area determining means that the images are superimposed, an icon display area included in the image corresponding to the first viewing angle direction and an icon display area included in the image corresponding to the second viewing angle direction DOO so do not overlap, it performs non-overlapping control by changing at least one of the display position, the display device according to claim 1.

Images