Indication device

Abstract

The present invention provides a display device that includes a touch panel and a multi-view display, allowing a user who does not operate the touch panel to recognize the content of the touch operation. [Solution] The display device comprises a multi-view display 10 in which a first display image is selectively viewed by a first operator from a first direction and a second display image is selectively viewed by a second operator from a second direction, a touch panel 30, a proximity sensor 20, and a control device 50. Based on the detection signal from the proximity sensor, the control device determines the proximity position of the indicator on the screen and the direction in which the indicator approaches the screen, corrects the display image viewed from directions other than the proximity direction based on the proximity position in the display image viewed from the proximity direction, and displays the corrected composite image on the screen.

Description

Technical Field

[0001] The present disclosure relates to a display device.

Background Art

[0002] Display devices mounted in vehicles have been increasing in size by being integrated with measurement meters such as speedometers and tachometers arranged on conventional instrument panels. By integrating with such measurement meters, the amount of information displayed on the display device has also been increasing.

[0003] On the other hand, in order to improve the convenience and comfort for passengers sitting in the passenger seat, it is required to display videos or content linked to the smartphones they possess for the passengers. However, such content may potentially affect the driving of the driver. Therefore, it has been proposed to display different images for the driver and the passenger by utilizing the fact that the direction in which the driver looks at the display device is different from the direction in which the passenger looks at the display device (for example, Patent Document 1). Such a display device is called a multi-view directional display

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When the display device includes a touch panel and also serves as an input device, if the images displayed for the driver and the passenger are different, for example, the driver cannot recognize what touch operations the passenger performs according to the image.

[0006] This disclosure aims to provide a display device that includes a touch panel and a multi-view display, and that allows a person who does not operate the touch panel to recognize the content of the touch operation. [Means for solving the problem]

[0007] A display device according to one embodiment of the present disclosure includes a multi-view display that displays a composite image on a screen including two different first and second display images, thereby allowing a first display image to be selectively viewed by a first operator from a first direction and a second display image to be selectively viewed by a second operator from a second direction; a touch panel that is at least partially disposed on or within the multi-view display and detects the touch position of an indicator on the screen; a proximity sensor having a plurality of detection electrodes disposed on the multi-view display and detecting the approach of an indicator; and a control device, the control device determines the proximity position of the indicator on the screen and the direction of approach of the indicator to the screen based on detection signals from the plurality of detection electrodes, modifies the display image viewed from directions other than the proximity direction based on the proximity position in the display image viewed from the proximity direction, and displays the modified composite image on the screen. [Effects of the Invention]

[0008] According to one embodiment of the present disclosure, a display device is provided that includes a touch panel and a multi-view display, and that allows a person who does not operate the touch panel to recognize the content of the touch operation. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a schematic diagram showing the instrument panel of a vehicle equipped with a display device. [Figure 2] Figure 2 is a block diagram showing one embodiment of a display device. [Figure 3] Figure 3 is a schematic cross-sectional view showing one embodiment of a display device. [Figure 4] Figure 4 is a plan view showing the arrangement of pixels. [Figure 5] Figure 5 is a plan view showing the positional relationship between the pixels and the light-shielding area. [Figure 6] Figure 6 is a schematic diagram illustrating the generation of images to be displayed on a multiview display. [Figure 7] Figure 7 is a schematic diagram illustrating how images appear on a multiview display. [Figure 8] Figure 8 is a schematic diagram illustrating the detection of the proximity position and direction of fingers by a proximity sensor. [Figure 9] Figure 9 is a flowchart illustrating the operation of the display device. [Figure 10A] Figure 10A shows an example of an image displayed on the display device shown to the driver (first operator). [Figure 10B] Figure 10B shows an example of an image displayed on the display device shown to the passenger (second operator). [Figure 11A] Figure 11A shows an example of an image displayed on the driver's device. [Figure 11B] Figure 11B shows an example of an image displayed on a passenger's display device. [Figure 12A] Figure 12A shows an example of an image displayed on the driver's device. [Figure 12B] Figure 12B shows an example of an image displayed on a passenger's display device. [Figure 13A] Figure 13A shows an example of an image displayed on the driver's device. [Figure 13B] Figure 13B shows an example of an image displayed on a passenger's display device. [Figure 14] Figure 14 is a schematic diagram illustrating the detection area for partially driving a touch panel. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present disclosure will be described based on the drawings. The present disclosure is not limited to the following embodiments, and design changes can be appropriately made within the scope that satisfies the configuration of the present disclosure. In the following description, the same reference numerals are commonly used among different drawings for the same parts or parts having similar functions, and repeated descriptions thereof may be omitted. Also, the respective configurations described in the embodiments and modification examples may be appropriately combined or changed without departing from the gist of the present disclosure. For the sake of easy understanding of the description, in the drawings referred to below, the configurations may be shown in a simplified or schematic manner, or some of the constituent members may be omitted. Also, the dimensional ratios between the constituent members shown in each figure do not necessarily indicate the actual dimensional ratios.

[0011] FIG. 1 is a schematic diagram showing an instrument panel 200 of a vehicle equipped with a display device 101 according to the present embodiment. The instrument panel 200 is located at the front part of the vehicle interior.

[0012] The display device 101 is, for example, arranged at the center of the instrument panel 200. In the present embodiment, the display device 101 is an information display terminal, and can display various information of the vehicle, an operation screen for the vehicle, a surrounding video captured by an in-vehicle camera, a map used in a car navigation system, traffic information and an operation screen, a screen of an application using various information that can be obtained through an Internet line, and the like. Also, the display device 101 can display the jacket of the music content being played, music videos, movies, entertainment contents such as sports, and the like.

[0013] The instrument panel 200 is arranged in front of the driver's seat 202 and the passenger seat 203, and the display device 101 is arranged at the center in the horizontal direction of the instrument panel 200. Therefore, the first direction D1 and the second direction D2 when the driver of the driver's seat 202 and the passenger of the passenger seat 203 view the screen 10a of the display device 101 are different.

[0014] Figure 2 is a block diagram showing one embodiment of the display device 101, and Figures 3 and 4 are schematic cross-sectional and plan views of the display device 101, respectively.

[0015] The display device 101 comprises a multi-view display 10, a proximity sensor 20, a touch panel 30, and a control device 50. The display device 101 further includes a proximity sensor control circuit 21 and a touch panel control circuit 31.

[0016] The multi-view display 10 is a multi-directional view display that can simultaneously display multiple different images depending on the viewing angle. In this disclosure, the multi-view display 10 can simultaneously display different images when viewed from at least two different directions, a first direction D1 and a second direction D2. Such a multi-view display can be constructed by arranging a parallax barrier on a display panel having pixels arranged in two dimensions, as disclosed, for example, in Japanese Patent Application Publication No. 2015-38532, U.S. Patent No. 7580186, etc.

[0017] In this embodiment, the multi-view display 10 is, for example, a liquid crystal display, and there are no particular restrictions on the driving method. There are also no particular restrictions on the size of the multi-view display 10, and the size can be determined according to the application.

[0018] The multi-view display 10 comprises an active matrix substrate 11, a counter substrate 12, a liquid crystal layer 13, an adhesive layer 14, a parallax barrier 16, and a protective layer 17.

[0019] The liquid crystal layer 13 is positioned between the active matrix substrate 11 and the opposing substrate 12. The display panel 15 is composed of an active matrix substrate 11, a counter substrate 12, and a liquid crystal layer 13. The display panel 15 includes a plurality of pixels Px arranged in two dimensions, in the row direction (x-axis direction) and the column direction (y-axis direction).

[0020] Figure 5 is a plan view showing the arrangement of multiple pixels Px. Multiple pixels Px are classified into red pixels Rxr, green pixels Pxg, and blue pixels Pxb by a color filter provided on the active matrix substrate 11 or the opposing substrate 12. For example, in the row direction, red pixels Rxr, green pixels Pxg, and blue pixels Pxb are arranged, and these three pixels constitute one color pixel PX capable of full-color display. On the other hand, pixels of the same color are arranged in the column direction. Sometimes the color pixel PX is simply called a pixel, and each of the red pixels Pxr, green pixels Pxg, and blue pixels Pxb that constitute the color pixel PX is called a subpixel.

[0021] Each color pixel PX includes a first color pixel PX1 and a second color pixel PX2, with the first and second color pixels PX1 and PX2 arranged alternately in the row direction. In the column direction, the first color pixels PX1 and the second color pixels PX2 are arranged consecutively. Therefore, the columns of first color pixels PX1 and the columns of second color pixels PX2 are arranged alternately in the row direction.

[0022] An adhesive layer 14 is placed on the opposing substrate 12, and a parallax barrier 16 is placed on the adhesive layer 14. The parallax barrier 16 includes a plurality of light-shielding portions 16b. Each of the plurality of light-shielding portions 16b has a stripe shape extending in the column direction and is arranged in the row direction separated by a predetermined gap G. The light-shielding portions 16b are made of a light-blocking material, such as a black matrix. Thus, the parallax barrier 16 constitutes a light-transmitting slit 16t located between the plurality of light-shielding portions 16b. The row-direction arrangement pitch of the light-shielding portions 16b is equal to, for example, the row-direction arrangement pitch of the first color pixel PX1 and the row-direction arrangement pitch of the second color pixel PX2.

[0023] In this embodiment, the touch panel 30 is located inside the multi-view display 10. The touch panel 30 detects the position of contact with a finger or the like on the screen 10a of the display device 101. The touch panel 30 may be of various types, such as capacitive, resistive, ultrasonic surface acoustic wave, or infrared. The touch panel 30 may be located in-cell, on-cell, or out-cell within the multi-view display 10. In other words, part or all of the touch panel 30 may be located on the top surface of the multi-view display 10, or part or all of the touch panel 30 may be located inside the multi-view display 10.

[0024] Furthermore, the touch panel 30 may be a touch panel that detects position and pressure. The touch panel 30 may, for example, include a drive electrode, a position sense electrode and a pressure sense electrode, and a drive signal is applied to the drive electrode, the position sense electrode detects a change in capacitance due to contact by a finger or the like, and the pressure sense electrode detects a change in capacitance due to pressure by a finger or the like. Such a touch panel 30 is disclosed, for example, in Japanese Patent Application Publication No. 2021-128511. The disclosure of Japanese Patent Application Publication No. 2021-128511 is incorporated herein by reference.

[0025] The proximity sensor 20 includes a plurality of detection electrodes 21a. Each detection electrode 21a has a stripe shape extending in the row direction and is positioned on one of the plurality of light-shielding portions 16b of the parallax barrier 16. The detection electrodes 21a function as a capacitive proximity sensor.

[0026] The proximity sensor 20 detects the approach and proximity position of the operator's fingers before they touch the multi-view display 10. Since the gap G between the light-shielding parts 16b is sufficiently small relative to the fingers, it is not necessary to place detection electrodes 21a on all light-shielding parts 16b. For example, in the example shown in the figure, detection electrodes 21a are placed on each of a pair of light-shielding parts 16b adjacent in the row direction, and the pair of detection electrodes 21a are arranged in the row direction at a pitch larger than the gap G. By placing detection electrodes 21a on multiple light-shielding parts 16b adjacent in the row direction, even if an abnormality is found in the detection signal obtained from one detection electrode 21a, the average of the detection signals from the other detection electrodes 21a can be calculated, and the effect of the abnormality can be suppressed.

[0027] Since the proximity sensor 20 detects the approach of fingers using a capacitive method, it may affect the operation of the touch panel 30. For this reason, it is preferable to provide the detection electrode 21a only in a portion of the light-shielding portion 16b. Below the light-shielding portion 16b where the detection electrode 21a is not located, the touch panel 30 is less susceptible to changes in capacitance caused by the proximity sensor 20.

[0028] A dummy electrode 21d may be provided in the light-shielding section 16b where the detection electrode 21a is not located. The detection electrode 21a is connected to the proximity sensor control circuit 21, and the dummy electrode 21d is a floating electrode that is not connected to any other circuit, reference potential, ground potential, etc. Alternatively, the dummy electrode 21d may not be provided in the light-shielding section 16b where the detection electrode 21a is not located. In either case, the number of detection electrodes 21a is less than the number of light-shielding sections 16b.

[0029] A protective layer 17 is placed on the adhesive layer 14, covering the light-shielding portion 16b and the detection electrode 21a. In addition, a pair of polarizing plates 18 are placed on the outside of the protective layer 17 and the active matrix substrate 11.

[0030] The touch panel control circuit 31 periodically outputs drive signals to the electrodes of the touch panel 30 to detect the operator's touch on the screen 10a, and receives detection signals from the touch panel. Furthermore, the touch panel control circuit 31 outputs the detection signals to the control device 50 at a predetermined interval.

[0031] The proximity sensor control circuit 21 periodically outputs a drive signal to the proximity sensor 20 and receives a detection signal from the proximity sensor 20 in order to detect the operator's approach to the screen 10a.

[0032] The control device 50 includes a host computer and controls the proximity sensor control circuit 21 and the touch panel control circuit 31. Specifically, the control device 50 receives detection signals from the proximity sensor 20 via the proximity sensor control circuit 21 and determines the proximity position of the fingers on the screen 10a and the direction in which the fingers are approaching the screen 10a. The control device 50 also receives detection signals from the touch panel control circuit 31 at predetermined intervals and determines the detected position of the fingers.

[0033] The control device 50 further generates an image to be displayed on the multi-view display 10. This image is a composite image that includes a first display image selectively visible to a first operator viewing the screen 10a of the multi-view display 10 from a first direction D1, and a second display image selectively visible to a second operator viewing the screen 10a of the multi-view display 10 from a second direction D2. Here, "selectively" means that it is difficult for other operators to see. Specifically, the first display image is difficult for the second operator to see, and the second display image is difficult for the first operator to see. The first display image and the second display image are different from each other.

[0034] Next, the image display using the multi-view display 10 will be explained. Figure 6 is a schematic diagram illustrating the generation of images to be displayed on the multi-view display 10. The control device 50 receives data of the first display image P1 and the second display image P2 from an external source, divides the first display image P1 and the second display image P2, and generates a composite image PS by combining the divided images. For example, the control device 50 generates divided images P1-1 to P1-6 and divided images P2-1 to P2-6 by dividing the first display image P1 and the second display image P2 in the row direction with a predetermined width. The width of each divided image depends on the width of the light-shielding portion 16b and the light-transmitting slit 16t of the parallax barrier 16, and is equal to, for example, the row-direction array pitch of the first color pixel PX1 and the second color pixel PX2. In other words, the width of the divided image is equal to the row-direction width of the color pixel PX.

[0035] The control device 50 further combines the divided images P1-1 to P1-6 and divided images P2-1 to P2-6 by arranging them alternately in the row direction, thereby generating a combined image PS. The data of the generated combined image PS is output to the multi-view display 10.

[0036] Figure 7 is a schematic diagram illustrating how images appear on the multi-view display 10. As shown in Figure 7, when viewing the screen 10a of the multiview display 10 from the first direction D1, the light emitted from the first color pixel PX1 passes through the light-transmitting slit 16t of the parallax barrier 16, but the light emitted from the second color pixel PX2 is blocked by the light-shielding portion 16b. Similarly, when viewing the screen 10a of the multiview display 10 from the second direction D2, the light emitted from the second color pixel PX2 passes through the light-transmitting slit 16t of the parallax barrier 16, but the light emitted from the first color pixel PX1 is blocked by the light-shielding portion 16b.

[0037] Therefore, when the composite image PS is displayed on the multi-view display 10 such that the divided images P1-1 to P1-6 of the generated composite image PS are positioned on the first color pixel PX1 and the divided images P2-1 to P2-6 are positioned on the second color pixel PX2, the light from the divided images P1-1 to P1-6 is selectively emitted in the first direction D1, and the light from the divided images P2-1 to P2-6 is selectively emitted in the second direction D2. As a result, the first display image P1 is visible to the driver (first operator) who is looking at the screen 10a of the multi-view display 10 from the first direction D1, and the second display image P2 is visible to the passenger (second operator) who is looking at the screen 10a of the multi-view display 10 from the second direction D2.

[0038] Next, we will explain how the control device 50 determines the proximity position of the fingers on the screen 10a and the direction of approach of the fingers to the screen 10a. Figure 8 is a schematic diagram illustrating the detection of the proximity position and direction of approach of the fingers by the proximity sensor. Multiple detection electrodes 21a are arranged on the screen 10a of the display device 101. The detection signals obtained from the multiple detection electrodes 21a do not show any change in capacitance unless an object that changes capacitance, such as a finger F2, approaches.

[0039] On the other hand, when the finger F2 approaches, the distance from the detection electrode 21a to the dielectric, which is the finger or palm, differs depending on the position, and the amount of change in capacitance detected by the multiple detection electrodes 21a also differs.

[0040] When fingers approach the screen 10a, the change in capacitance of the detection electrode 21a closest to the tip of the finger that is to be touched to the screen is the largest. Typically, when a driver or passenger touches the screen of the display device 101, the palm or other fingers approach the screen 10a horizontally (in the row direction) outward relative to the center. Therefore, by comparing the change in capacitance obtained from the detection signals detected by each detection electrode 21a, it is possible to determine the proximity position of the fingers on the screen 10a and the direction in which the fingers are approaching the screen 10a. For example, as shown in Figure 8, multiple detection electrodes 21a arranged in a row are set as detection electrodes 21a-1, 21a-2, ... 21a-k, ... 21a-n from the driver's side to the passenger's side. On the second direction D2 side, that is, when the passenger is operating, their fingers are closest to detection electrode 21a-k. The changes in the detection signals obtained from detection electrodes 21a-1, 21a-2, ... 21a-k, ... 21a-n due to the approach of the fingers, i.e., the changes in capacitance, are denoted as Δs-1, Δs-2, ... Δs-k, ... Δs-n.

[0041] In this case, the change amount Δs-k is largest at the detection electrode 21a-k where the finger F2 is closest. Also, since the finger is not in close proximity, the change amount Δs-1 to Δs-(k-1) is almost zero, and the change amount Δs-(k+1) to Δs-n, where the palm or other fingers may be in close proximity, satisfies the relationship Δs-k > Δs-(k+1) to Δs-n. In this way, the control device 50 determines the proximity position and the direction of proximity of the finger by comparing the detection signals obtained from multiple detection electrodes 21a. The direction of proximity corresponds to the operator. Since the detection electrodes 21a have a stripe shape extending in the column direction, the proximity position of the finger can be specified in the row direction of the screen 10a, but not in the column direction.

[0042] Next, the operation of the display device 101 will be explained. Figure 9 is a flowchart illustrating the operation of the display device 101. Figures 10A to 13A show examples of images from the display device 101 presented to the driver (first operator), and Figures 10B to 13B show examples of images from the display device 101 presented to the passenger (second operator). In this example, the driver is operating the vehicle.

[0043] In the initial state, the driver (first operator) and the passenger (second operator) are presented with the first display image P11 and the second display image P12 shown in Figures 10A and 10B, respectively.

[0044] As shown in Figure 10A, the first display image P11 includes, for example, an image PD1 of a map for navigation and an image PD2 showing vehicle information. Since the map for navigation and the vehicle information are primarily information necessary for the driver, image PD1 is driver-oriented content. Since the vehicle information is also primarily information necessary for the driver, image PD2 is also driver-oriented content. Image PD1 is located in the first region R1, and image PD2 is located in the second region R2.

[0045] As shown in Figure 10B, the second display image P12 includes, for example, an image PC1 of a menu for performing various operations and an image PP1 of a movie, which is entertainment content for passengers to watch. The menu for performing various operations contains information commonly needed by both the driver and passengers and is therefore common content. On the other hand, content such as movies is content for the second operator when the driver is operating the vehicle. Image PC1 is located in the second area R2, and image PP1 is located in the first area R1.

[0046] As described above, the control device 50 generates divided images by dividing the first display image P11, which includes images PD1 and PD2, and the second display image P12, which includes images PC2 and PP1, into predetermined widths in the row direction, and further generates a composite image by arranging the divided images alternately. By displaying the generated composite image on the multi-view display 10, the driver, who is the first operator, views the first display image P11, and the passenger, who is the second operator, views the second display image P12.

[0047] In this state, either the driver or the passenger brings their fingers F2 close to the screen 10a in order to input to the touch panel 30 of the display device 101 (step S1). In the example shown in Figures 11A and 11B, the passenger brings their fingers F2 close to the menu image PC1 of the second display image P12. At this time, the driver is looking at the first display image P11, which is different from the second display image P12, so the movement of the passenger's fingers F2 does not correspond to the first display image P11, and the driver cannot understand what operation the passenger is trying to perform.

[0048] The proximity sensor 20 outputs detection signals obtained from multiple detection electrodes 21a to the control device 50 at predetermined time intervals. As described above, the control device 50 obtains distance information from the detection signals received from the proximity sensor 20 to the dielectric approaching each detection electrode. Furthermore, the control device 50 determines the proximity position and the direction of approach, that is, which operator's finger it is, from the distance information of the finger F2 approaching each detection electrode 21a (step S2). In the example shown in Figures 11A and 11B, the control device 50 determines that the direction of approach is the second direction and that the passenger's finger F2 is approaching.

[0049] Next, the control device 50 determines whether the proximity position is within the area of ​​common content on the screen of the determined operator (step S3). In the example shown in Figures 11A and 11B, it is determined that the fingers F2 are approaching from the passenger's side, and the control device determines whether the proximity position is within the area of ​​common content in the second display image P12 presented to the passenger.

[0050] As shown in Figure 11B, since the fingers F2 are approaching from a second direction, the control device 50 determines whether the proximity position Xa is within the area of ​​common content in the second display image P12, which is viewed by the passenger, a second operator, who is looking at the display device 101 from the second direction. The proximity position Xa is within the second area R2 where the menu image PC1, which is common content, is located. Therefore, the control device 50 updates the other person's image and generates a composite image using the updated image (step S4). More specifically, the control device 50 modifies the first display image P11 to include the menu image PC1, which is common content, and displays the modified composite image, which is a combination of the modified first display image P21 and the second display image P12, on the multi-view display 10.

[0051] As a result, as shown in Figure 12A, the menu image PC1 is placed in the first region R1 of the first display image P21 that the driver sees. Therefore, the driver can recognize that the position where the passenger's fingers F2 are approaching corresponds to the menu image PC1. On the other hand, as shown in Figure 12B, the second display image P12 is not modified. Therefore, the passenger can touch the menu image PC1 with their fingers F2 and operate the menu.

[0052] Furthermore, as shown in Figure 13B, the passenger brings their fingers F2 close to the movie image PP1 of the second display image P12. At this time, as shown in Figure 13A, the driver is looking at the first display image P11, which is different from the second display image P12. Therefore, the movement of the passenger's fingers F2 does not correspond to the first display image P11, and the driver cannot understand what operation the passenger is trying to perform.

[0053] Similarly, the control device 50 obtains distance information from the detection signal received from the proximity sensor 20 and determines the proximity position and direction from the distance information (step S2). In the example shown in Figures 13A and 13B, the control device 50 determines that the proximity direction is the second direction and that the passenger's fingers F2 are approaching. Next, the control device 50 determines whether the proximity position is within the area of ​​common content on the screen of the determined operator (step S3). In the example shown in Figures 123 and 13B, it determines that the fingers F2 are approaching from the passenger's side and determines whether the proximity position Xb is within the area of ​​common content in the second display image P12 presented to the passenger. The proximity position Xb is within the first area R1 where the image PP1, such as a movie or music, which is content for the driver, is located. Therefore, the control device 50 cannot change the image of the other person and terminates the process. In other words, the control device 50 displays the combined image of the first display image P11 and the second display image P12, which were displayed before the approach of the finger F2, on the multi-view display 10 without changing the image. As a result, the driver continues to view the first display image P11. This prevents the driver from being shown the movie image PP1 while driving, thus avoiding the presentation of information unrelated to driving to the driver.

[0054] As described above, the display device of this embodiment uses a proximity sensor to determine whether the driver or a passenger is attempting to operate the touch panel, and based on the determination result, it can modify the display image seen by the person not operating the touch panel. Therefore, for example, if a passenger is attempting to operate a menu screen that is used by both the driver and the passenger, and the menu screen is not displayed to the driver, the menu screen can be displayed to the driver as well. In particular, because the driver can see the same menu screen as the passenger, the driver can specifically recognize what operation the passenger is attempting. Furthermore, if a passenger is watching a movie and is attempting to operate the movie, the display image seen by the driver can not be modified, and images unrelated to driving can not be displayed to the driver.

[0055] Furthermore, according to the display device of this embodiment, since the detection electrodes of the proximity sensor are placed on the parallax barrier of the multi-view display, the area of ​​the bezel region can be reduced compared to when the proximity sensor is placed in the bezel region. Since the detection electrodes of the proximity sensor are provided in a part of the light-shielding portion of the parallax barrier, the influence on the detection of the touch sensor can be suppressed.

[0056] In the above embodiment, the operation of the display device 101 during driving has been mainly described, but when the vehicle is stopped, such as when parked, the driver may operate the display device 101. In this case, the first display image presented to the driver and the second display image presented to the passenger may be different, and the second display image may be corrected by the driver bringing their fingers close to the screen 10a of the display device 101. Also, while driving or parked, the display device 101 may display the same second display image as the first display image.

[0057] The display device of this disclosure is not limited to the above embodiment and may be modified in various ways. For example, in the display device 101, the detection signal of the proximity sensor 20 may be used to control the touch panel 30. Specifically, as shown in Figure 14, the screen 10a is divided in the row direction into detection areas Rd-1, Rd-2, ...Rd-k...Rd-n.

[0058] The control device 50 determines the proximity position of the finger F2 based on the detection signal from the detection electrode 21a. For example, if the proximity position Xc is within the detection area Rd-k, only the portion of the touch panel 30 located in the detection area Rd-k is driven, and the portions located in other detection areas are deactivated. By performing this control, the power consumption of the touch panel 30 can be reduced.

[0059] Furthermore, in the above embodiment, the multi-view display 10 is a liquid crystal display, but it may also be a display with another structure, such as an organic EL display or a mini-LED display.

[0060] The display device of this disclosure can also be described as follows:

[0061] The display device according to the first configuration is a multi-view display that displays a composite image on the screen including two different first and second display images, thereby allowing the first display image to be selectively viewed by a first operator from a first direction and the second display image to be selectively viewed by a second operator from a second direction. A touch panel is positioned on or within the multi-view display, at least in part, to detect the touch position of an indicator on the screen. A proximity sensor having multiple detection electrodes arranged on the multi-view display, which detects the approach of the indicator object, Control device and Equipped with, The control device is Based on the detection signals from the plurality of detection electrodes, the proximity position of the indicator on the screen and the direction in which the indicator approaches the screen are determined. Based on the proximity position in the display image viewed from the proximity direction, the display image viewed from a direction other than the proximity direction is modified, and the modified composite image is displayed on the screen.

[0062] According to the first configuration, the proximity signal obtained from the proximity sensor determines the proximity position of the indicator and the direction in which the indicator approaches the screen. Therefore, it is possible to determine whether the first operator or the second operator is attempting to operate the touch panel, and based on the determination result, the display image viewed by the operator who is not operating the touch panel can be corrected.

[0063] The second configuration is as follows: In the first configuration, the first display image includes first content for the first operator, the second display image includes second content for the second operator and common content used by both the first and second operators, and the control device may modify the first display image to include the common content if the proximity direction is the second direction and the proximity position is within the area of ​​the second display image where the common content is displayed, and display a modified composite image on the screen obtained by combining the modified first display image and the second display image. With this configuration, if the second operator is attempting to operate a menu screen which is common content used by both the first and second operators, and the menu screen is not displayed to the first operator, the menu screen can be displayed to the first operator as well. Therefore, the first operator can specifically recognize what operation the second operator is attempting.

[0064] The third configuration is that, in the first configuration, the first display image includes first content necessary for the first operator, the second display image includes second content necessary for the second operator and common content necessary for both the first and second operators, and the control device may display the composite image as is on the screen if the proximity direction is the second direction and the proximity position is within the area where the second content of the second display image is displayed. With this configuration, if the second operator is watching content such as a movie and is about to operate the movie, the display image seen by the first operator is not modified, and images unrelated to driving are not displayed to the first operator.

[0065] The fourth configuration is the first configuration, wherein the multiview display includes a display panel containing a plurality of pixels arranged in row and column directions, and a parallax barrier disposed in front of the display panel, the parallax barrier having a plurality of light-shielding portions, each having a stripe shape extending in the column direction and arranged with a predetermined gap in the row direction, and each of the plurality of detection electrodes of the proximity sensor is located in one of the plurality of light-shielding portions, and the number of the plurality of detection electrodes may be less than the number of the plurality of light-shielding portions. With this configuration, since the detection electrodes of the proximity sensor are located on the parallax barrier of the multiview display, the area of ​​the frame region can be reduced compared to when the proximity sensor is located in the frame region. In addition, since the detection electrodes of the proximity sensor are provided in a part of the light-shielding portion of the parallax barrier, the influence on the detection of the touch sensor can be suppressed.

[0066] The fifth configuration is that, in the first configuration, the first and second directions may be positioned on a plane perpendicular to the screen of the multiview display and parallel to the column direction, with a line perpendicular to the screen between them.

[0067] The sixth configuration is that, in the first configuration, the touch panel has a plurality of detection areas divided in the row direction, and the control device determines the proximity position of the indicator on the screen based on the detection signals from the plurality of detection electrodes, and based on the proximity position, drives only a portion of the plurality of detection areas of the touch panel to detect the touch position of the indicator. By performing such control, the power consumption of the touch panel can be reduced.

[0068] In the seventh configuration, the control device may divide the first display image and the second display image, respectively, and display a composite image formed by arranging the divided first display image and the second display image in a predetermined order on the screen of the multiview display. [Explanation of Symbols]

[0069] 10…Multi-view display, 10a…Screen, 11…Active matrix substrate, 12…Opposite substrate, 13…Liquid crystal layer, 14…Adhesive layer, 15…Display panel, 16…Parallax barrier, 16b…Light shielding section, 16t…Light-transmitting slit, 17…Protective layer, 18…Polarizing plate, 20…Proximity sensor 21... Proximity sensor control circuit, 21a... Detection electrode, 21d... Dummy electrode, 30... Touch panel, 31... Touch panel control circuit, 50... Control device, 101... Display device, 101a... Screen 200…Instrument panel, 202…Driver's seat, 203…Passenger seat

Claims

1. A multi-view display that displays a composite image on the screen including two different first and second display images, thereby allowing the first display image to be selectively viewed by a first operator from a first direction, and the second display image to be selectively viewed by a second operator from a second direction. A touch panel is positioned on or within the multi-view display, at least in part, to detect the touch position of an indicator on the screen. A proximity sensor having multiple detection electrodes arranged on the multi-view display, which detects the approach of the indicator object, Control device and Equipped with, The control device is Based on the detection signals from the plurality of detection electrodes, the proximity position of the indicator on the screen and the direction in which the indicator approaches the screen are determined. A display device that, based on the proximity position in the display image viewed from the proximity direction, modifies the display image viewed from a direction other than the proximity direction, and displays the modified composite image on the screen.

2. The first display image includes first content for the first operator, The second display image includes second content for a second operator and common content used by both the first operator and the second operator. The control device is The display device according to claim 1, wherein, if the proximity direction is the second direction and the proximity position is within the area where the common content of the second display image is displayed, the first display image is modified to include the common content, and a modified composite image obtained by combining the modified first display image and the second display image is displayed on the screen.

3. The first display image includes first content necessary for the first operator, The second display image includes second content required by the second operator and common content required by both the first operator and the second operator. The control device is The display device according to claim 1, wherein if the proximity direction is the second direction and the proximity position is within the area where the second content of the second display image is displayed, the composite image is displayed on the screen as is.

4. The aforementioned multiview display is A display panel containing multiple pixels arranged in the row and column directions, A parallax barrier comprising a plurality of light-shielding portions and positioned on the front surface of the display panel, wherein each of the plurality of light-shielding portions has a stripe shape extending in the column direction and is arranged with a predetermined gap in the row direction, Includes, Each of the multiple detection electrodes of the proximity sensor is positioned in one of the multiple light-shielding sections. The display device according to claim 1, wherein the number of the plurality of detection electrodes is less than the number of the plurality of light-shielding parts.

5. The display device according to claim 1, wherein, on a plane perpendicular to the screen of the multiview display and parallel to the column direction, the first direction and the second direction are positioned with a line perpendicular to the screen in between them.

6. The touch panel has multiple detection areas divided in the row direction, The control device is Based on the detection signals from the multiple detection electrodes, the proximity position of the indicator on the screen is determined. The display device according to claim 1, wherein, based on the proximity position, only a portion of the plurality of detection areas of the touch panel is driven to detect the touch position of the indicator.

7. The display device according to claim 1, wherein the control device divides the first display image and the second display image, respectively, and displays a composite image formed by arranging the divided first display image and the second display image in a predetermined order on the screen of the multiview display.

Images