Electronic device for controlling a passenger seat display and method for controlling a passenger seat display

Abstract

An electronic device for controlling a passenger seat display in front of a passenger sitting on a passenger seat and a method for controlling the passenger seat display are provided. An electronic device and a control method for changing the viewing angle of the passenger seat display and adjusting the brightness or color coordinates of the passenger seat display according to the operating state of a vehicle are provided. A structure of a backlight unit for increasing the light-collecting capability to improve the brightness of the passenger seat display is provided.

Description

Technical Field

[0001] The present disclosure relates to an electronic device for controlling a passenger seat display in front of a passenger sitting on a passenger seat of a vehicle and a method of controlling the passenger seat display. Background Art

[0002] Vehicles are the main means of transportation in modern society. With the development of the automobile industry, the use of vehicles has become widespread, and recently, as a plurality of displays are installed inside vehicles, the importance of electronic devices including displays has emerged.

[0003] For the passenger seat display in front of the passenger sitting on the passenger seat among the displays installed inside the vehicle, when the vehicle is stopped, not only the passenger sitting on the passenger seat but also the driver can watch the contents displayed on the passenger seat display, but when the vehicle is moving, the driver should not watch the contents displayed on the passenger seat display. In addition, according to traffic regulations, the driver is prohibited from watching the contents while driving, except for special purpose contents such as route guidance navigation.

[0004] Therefore, there is a need for a technology that performs control so that a passenger sitting on a passenger seat can view the contents displayed on a passenger seat display while prohibiting the driver from viewing the contents displayed on the passenger seat display when the vehicle is moving. In addition, in order to provide a comfortable viewing environment for the passenger sitting on the passenger seat, it is necessary to perform control so that the passenger sitting on the passenger seat does not feel a change in brightness or a change in color when the vehicle is switched between moving and stopping. Summary of the invention

[0005] Solution to the problem

[0006] Embodiments of the present disclosure relate to an electronic device for controlling a passenger seat display and a method for controlling a passenger seat display, and more specifically, provide an electronic device and a control method for changing the viewing angle of a passenger seat display and adjusting the brightness or color coordinates of the passenger seat display according to the operating state of a vehicle.

[0007] According to an embodiment of the present disclosure, there is provided a structure of a backlight unit for increasing light-gathering capability to improve brightness of a passenger seat display.

[0008] Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the embodiments presented in the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0010] The present disclosure may be easily understood through the following detailed description in conjunction with the accompanying drawings.

[0011] Figure 1 The interior structure of the vehicle is shown;

[0012] Figure 2A shows the viewing angle of the passenger seat display according to the operating mode;

[0013] Figure 2B shows the viewing angle of the passenger seat display according to the operating mode;

[0014] Figure 3 is a cross-sectional view of a passenger seat display according to an embodiment of the present disclosure;

[0015] Figure 4 is a block diagram of an electronic device for controlling a passenger seat display according to the present disclosure;

[0016] Figure 5 is a flow chart of a method of controlling a passenger seat display according to an embodiment of the present disclosure;

[0017] Figure 6 is a flowchart of a method for controlling a passenger seat display according to a driving mode and a stopping mode according to an embodiment of the present disclosure;

[0018] Figure 7 shows adjusting the brightness of a passenger seat display according to an embodiment of the present disclosure;

[0019] Figure 8 shows adjusting the color coordinates of a passenger seat display according to an embodiment of the present disclosure;

[0020] Fig. 9 is a flow chart of a method for adjusting the brightness or color coordinates of a passenger seat display according to an embodiment of the present disclosure;

[0021] Fig.10 is a cross-sectional view of a passenger seat display according to an embodiment of the present disclosure;

[0022] Fig.11 is a cross-sectional view of a backlight unit (BLU) of a passenger seat display according to an embodiment of the present disclosure;

[0023] Fig.12 is a bottom view of a light guide plate (LGP) of a passenger seat display according to an embodiment of the present disclosure;

[0024] Fig.13 is a perspective view of an LGP of a passenger seat display according to an embodiment of the present disclosure;

[0025] Fig.14 is a perspective view of an LGP of a passenger seat display according to an embodiment of the present disclosure;

[0026] Fig.15 is a cross-sectional view of a prism panel of a passenger seat display according to an embodiment of the present disclosure;

[0027] Fig.16 is a cross-sectional view of a prism panel of a passenger seat display according to an embodiment of the present disclosure; and

[0028] Fig.17 is a block diagram of a vehicle-based computing system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] According to an embodiment of the present disclosure, a method for controlling a passenger seat display includes: obtaining operating status information of a vehicle by detecting the operating status of a vehicle driven by a driver; determining an operating mode of the vehicle based on the obtained operating status information, the operating mode including a driving mode and a stop mode; controlling a driving voltage applied to a viewing angle switching element including a polymer dispersed liquid crystal (PDLC) based on the determined operating mode; and when the driving voltage is applied to the viewing angle switching element, adjusting the brightness or color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively.

[0030] According to certain embodiments, detecting whether the vehicle is moving includes detecting at least one of vehicle speed, pressure applied to a vehicle accelerator, or operation of a vehicle steering wheel.

[0031] According to certain embodiments, determining the operating mode of the vehicle includes: when the detected vehicle speed exceeds a predetermined threshold speed, determining the operating mode of the vehicle as a driving mode; when the detected vehicle speed is equal to or less than a predetermined threshold speed, determining the operating mode of the vehicle as a stop mode.

[0032] According to certain embodiments, obtaining the operating status information of the vehicle includes detecting the operation of the steering wheel, including a turning angle, a turning speed, a turning direction, the number of turning direction switches, a steering angle, or at least one of the number of steering direction switches of the steering wheel, and determining the operating mode of the vehicle includes determining the operating mode of the vehicle as a driving mode when the operation of the steering wheel is detected.

[0033] According to certain embodiments, controlling the driving voltage applied to the perspective switching element includes: applying the driving voltage to the perspective switching element when the operating mode of the vehicle is determined to be a driving mode; and not applying the driving voltage to the perspective switching element when the operating mode of the vehicle is determined to be a stop mode.

[0034] According to some embodiments, the driving voltage applied to the viewing angle switching element is an alternating current (AC) voltage.

[0035] According to certain embodiments, adjusting the brightness or color coordinates of a passenger seat display includes adjusting the brightness of the passenger seat display to a target brightness value based on an amount of brightness reduction that occurs due to a driving voltage being applied to a viewing angle switching element by controlling the amplitude of a driving current applied to a light source of the passenger seat display.

[0036] According to certain embodiments, information regarding the amount of brightness reduction is stored in a memory of the vehicle.

[0037] According to certain embodiments, adjusting the brightness or color coordinates of a passenger seat display includes adjusting the color coordinates of the passenger seat display to a target color coordinate value based on an amount of color coordinate change that occurs due to a driving voltage being applied to a viewing angle switching element, wherein the color coordinates of the passenger seat display are adjusted by adjusting the RGB output amount through a timing control board (T-CON board) or an image board that controls the operation of the passenger seat display.

[0038] According to certain embodiments, information regarding the color coordinate changes is stored in a memory of the vehicle.

[0039] According to certain embodiments, an electronic device for controlling a vehicle passenger seat display includes: a passenger seat display arranged on a vehicle dashboard in front of a passenger seat, the passenger seat display including a backlight unit (BLU), a viewing angle switching element (including a polymer dispersed liquid crystal (PDLC)) and a liquid crystal display panel; a sensor configured to detect the operating state of a vehicle driven by a driver; a power supply configured to supply direct current (DC) power to the passenger seat display and the sensor; at least one processor connected to the power supply, the sensor and the passenger seat display; and a memory connected to the at least one processor, the memory storing one or more instructions executable by the at least one processor, wherein the execution of the one or more instructions by the at least one processor causes the at least one processor to perform multiple operations: obtaining operating state information of the vehicle from the sensor, determining an operating mode of the vehicle including a driving mode and a stop mode based on the obtained operating state information, controlling the power supply to apply a driving voltage to the viewing angle switching element based on whether the vehicle is determined to be in motion, and when the driving voltage is applied to the viewing angle switching element, adjusting the brightness or color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively.

[0040] According to certain embodiments, the sensor includes at least one of a speed sensor configured to detect vehicle speed, an accelerator sensor configured to detect pressure applied to a vehicle accelerator, or a steering wheel sensor configured to detect operation of a vehicle steering wheel.

[0041] According to certain embodiments, at least one processor is further configured to execute one or more instructions to: determine the vehicle's operating mode as a driving mode when the vehicle speed detected by the speed sensor exceeds a predetermined threshold speed; and determine the vehicle's operating mode as a stop mode when the detected vehicle speed is equal to or less than a predetermined threshold speed.

[0042] According to certain embodiments, the steering wheel sensor is also configured to detect the operation of the steering wheel, including at least one of the turning angle, the turning speed, the turning direction, the number of turning direction switches, the steering angle, or the number of steering direction switches of the steering wheel, and at least one processor is also configured to execute one or more instructions to determine the operating mode as the driving mode when the operation of the steering wheel is detected.

[0043] According to certain embodiments, at least one processor is also configured to execute one or more instructions to: when the operating mode of the vehicle is determined to be a driving mode, control the power supply to apply a driving voltage to the perspective switching element, and when the operating mode of the vehicle is determined to be a stop mode, control the power supply not to apply a driving voltage to the perspective switching element.

[0044] According to some embodiments, the electronic device also includes a DC-AC (alternating current) converter configured to convert DC power output from a power supply into AC power, wherein the driving voltage applied to the viewing angle switching element is an AC voltage converted by the DC-AC converter.

[0045] According to certain embodiments, the electronic device also includes a storage device that stores information about the amount of brightness reduction of the passenger seat display between when a driving voltage is applied to the viewing angle switching element and when it is not applied to the viewing angle switching element, wherein multiple operations also include: adjusting the brightness of the passenger seat display to a target brightness value by using the information about the amount of brightness value reduction.

[0046] According to certain embodiments, the plurality of operations further include controlling the power supply to change a magnitude of a driving current applied by the power supply to the light source of the BLU, thereby adjusting brightness of the passenger seat display.

[0047] According to certain embodiments, the electronic device also includes a storage device for storing information about changes in color coordinates of a passenger seat display between when a driving voltage is applied to a viewing angle switching element and when a driving voltage is not applied to the viewing angle switching element, wherein multiple operations also include: adjusting the color coordinates of the passenger seat display to a target color coordinate value by using the information about the change in color coordinates.

[0048] According to certain embodiments, the plurality of operations further comprises adjusting color coordinates of the passenger seat display by adjusting RGB output amounts via a timing control board (T-CON board) or a graphics board that controls operation of the passenger seat display.

[0049] According to certain embodiments, a passenger seat display arranged on a vehicle dashboard and in front of a vehicle passenger seat includes: a liquid crystal display panel; a viewing angle switching element including a polymer dispersed liquid crystal (PDLC); and a backlight unit (BLU), wherein the BLU includes: a light emitting diode (LED) light source; a light guide plate (LGP) configured to transmit light to the liquid crystal panel by changing the path of light incident from the LED light source; a reflective member adjacent to a first surface of the LGP and configured to reflect light reflected by the LGP again; and a prism plate adjacent to a second surface of the LGP and including a plurality of prism patterns protruding in an inverted triangle in a direction facing the second surface of the LGP.

[0050] According to some embodiments, the reflective member includes silver.

[0051] According to certain embodiments, the LGP and the reflective member are spaced apart by a preset distance, and the passenger seat display further includes a plurality of connection members between the first surface of the LGP and the upper surface of the reflective member.

[0052] According to some embodiments, a plurality of lens patterns having a certain width in a first direction, extending in a second direction, and protruding a certain height in a height direction are formed on a second surface of the LGP.

[0053] According to some embodiments, the plurality of lens patterns are spaced apart by a predetermined distance.

[0054] According to some embodiments, at least one of the protruding surfaces of the plurality of prism patterns is formed as a multi-surface structure having different inclination angles with respect to a horizontal plane.

[0055] Considering the functions of the present disclosure, the terms used in the embodiments of the present disclosure are common terms currently widely used in the art, but these terms may change according to the intention of ordinary technicians in the art, precedents, or new technologies in the art. In addition, the applicant may select a specific term, in which case the detailed meaning of the term will be described in the specific implementation. Therefore, the terms used in the specification should not be defined as simple names, but based on the meaning and overall description of the term.

[0056] A singular expression includes a plural expression unless they are obviously different in context. All terms used herein, including technical terms or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs.

[0057] Throughout the specification, when a certain part "includes" a certain component, this indicates that the part may also include another component, rather than excluding another component, unless there is a different disclosure. In addition, terms such as "-unit" and "-module" used in the specification refer to units that perform at least one function or operation, and these units can be implemented as hardware or software or a combination of hardware and software.

[0058] Throughout the disclosure, the expression "at least one of a, b, or c" means only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof.

[0059] Depending on the circumstances, the expression "configured to" used in the specification may be interchangeable with, for example, "suitable for", "capable of...", "designed to", "adapted to", "enabled to", or "capable of". The term "configured to" does not necessarily refer only to "specially designed to" in terms of hardware. On the contrary, in certain cases, the expression "a system configured to..." may mean that the system, together with another device or component, "is capable of...". For example, "a processor configured to perform A, B, and C" may mean a dedicated processor (e.g., an embedded processor) configured to perform the corresponding operations or a general-purpose processor (e.g., a central processing unit (CPU) or an application processor) capable of performing the corresponding operations by executing one or more software programs stored in a memory.

[0060] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be implemented in many different forms and should not be construed as being limited to the embodiments of the present disclosure set forth herein.

[0061] The passenger seat display may be in front of the passenger seat (the frontmost seat, excluding the driver's seat) in the vehicle. The driver is allowed to view the passenger seat display when the vehicle is not moving or stopped. However, the driver should not view the passenger seat display when the vehicle is moving. Furthermore, according to traffic regulations, the driver should be prohibited from viewing content while driving, except for special purpose content such as route guidance navigation.

[0062] Therefore, it is desirable to provide a technology that enables a passenger sitting on a passenger seat to view the contents displayed on a passenger seat display while preventing the driver from viewing the contents displayed on the passenger seat display when the vehicle is moving. In addition, in order to provide a comfortable viewing environment for the passenger sitting on the passenger seat, it is necessary to perform control so that the passenger sitting on the passenger seat does not perceive a change in brightness or color when the vehicle switches between moving and not moving.

[0063] Embodiments of the present disclosure relate to an electronic device for controlling a passenger seat display and a method for controlling a passenger seat display. More specifically, the electronic device and the control method change the viewing angle of the passenger seat display and adjust the pixels of the passenger seat display based on whether the vehicle is moving.

[0064] According to an embodiment of the present disclosure, there is provided a structure of a backlight unit for increasing light-collecting capability to improve brightness of a passenger seat display.

[0065] Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the embodiments presented in the disclosure.

[0066] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0067] Figure 1 The interior structure of the vehicle 100 including the passenger seat display 150 is shown. Figure 1 , the vehicle 100 may include an instrument panel 110, a steering wheel 120, an instrument cluster 130, a central information display (CID) 140, a passenger seat display 150, a driver seat 160, and a passenger seat 170. The instrument panel 110 is in front of the driver seat 160 and the passenger seat 170. Instruments and control buttons required for driving the vehicle 100 may be installed on the instrument panel 110. The instrument cluster 130, the central display 140, and the passenger seat display 150 may be installed on the instrument panel 110. According to an embodiment of the present disclosure, the instrument panel 110 may include an instrument panel including instruments and control buttons and a center panel (centerfacia) arranged between the driver seat 160 and the passenger seat 170 and having air conditioning and audio equipment.

[0068] The instrument panel 130 may be mounted on the dashboard 110 and arranged in front of the driver's seat 160. The instrument panel 130 may display information about at least one of the traveling speed, engine revolutions per minute (RPM), fuel capacity, or coolant temperature gauge of the vehicle 100. The instrument panel 130 may include a pointer and a speedometer plate as hardware components, but is not limited thereto. The instrument panel 130 may include a display device covering its entire area.

[0069] The CID 140 may be on the instrument panel 110 and between the driver seat 160 and the passenger seat 170. The CID 140 may display a route guidance navigation image to a destination, display vehicle related information, or display image content.

[0070] The passenger seat display 150 may be on the instrument panel 110 and in front of the passenger seat 170. Figure 1 The passenger seat display 150 is shown to be spaced a certain distance from the CID 140, but the embodiments presented in the present disclosure are not limited thereto. The passenger seat display 150 may be formed together with the CID 140. According to an embodiment of the present disclosure, the instrument panel 130, the CID 140, and the passenger seat display 150 may be formed as one body.

[0071] The passenger seat display 150 may provide image content to a passenger sitting on the passenger seat 170. According to an embodiment of the present disclosure, the passenger seat display 150 may display image content such as a movie or a drama. According to another embodiment of the present disclosure, the passenger seat display 150 may display content linked to a passenger's smartphone or wirelessly connected to a smartphone to display a user interface (UI) image screen on which functions such as calling, texting, and application execution are performed.

[0072] The passenger seat display 150 may include a physical device including, for example, at least one of a liquid crystal display (LCD), a plasma display panel (PDP) display, an organic light emitting diode (OLED) display, a field emission display (FED), a vacuum fluorescent display (VFD), a digital light processing (DLP) display, a flat panel display, a three-dimensional (3D) display, or a transparent display, but is not limited thereto. According to an embodiment of the present disclosure, the passenger seat display 150 may include a touch screen including a touch interface.

[0073] The viewing angle of the passenger seat display 150 may be adjusted based on whether the vehicle is in motion. In certain embodiments, the viewing angle of the passenger seat display 150 may be adjusted to be wide enough so that the driver can view the content on the passenger seat display 150 when the vehicle is not in motion. However, when the vehicle is in motion, the viewing angle of the passenger seat display 150 becomes narrower to prevent the driver from viewing. In addition, the pixels of the passenger seat display are adjusted based on whether the vehicle is in motion so that the passenger does not perceive the difference in color or brightness due to the difference in ambient light between when the vehicle is in motion and when the vehicle is not in motion. In addition, the passenger seat display 150 includes a backlight unit for increasing the light-gathering capability to increase the brightness of the passenger seat display.

[0074] Figure 2A and Figure 2B The viewing angles of the passenger seat display 150 are shown depending on the operating mode.

[0075] refer to Figure 2A , when the vehicle is not moving (which includes and can be considered a stop mode), the passenger seat display 150 can display image content at a wide viewing angle. Stop mode or "not moving" indicates that the vehicle is not driven by the driver (such as when the internal combustion engine (ICE) is not ignited, or when the ICE is ignited and the gear is in the parking gear), or is traveling at a reference speed or lower. "Not moving" or stop mode indicates a situation where the vehicle is completely stopped after moving (such as at a traffic light or stop sign), but is not limited to this. According to an embodiment of the present disclosure, "not moving" or stop mode can indicate a speed of 0 to 5 miles per hour.

[0076] In the stop mode, the passenger seat display 150 can display image content at a wide viewing angle, so both the driver 10 and the passenger 20 can view the image content displayed on the passenger seat display 150. In the wide viewing angle mode, the light emitted from the passenger seat display 150 is diffuse light, so not only the passenger 20 located in front of the passenger seat display 150 but also the driver 10 located in a direction inclined relative to the front of the passenger seat display 150 can view the image content.

[0077] refer to Figure 2B , when the vehicle is in motion (which may be considered and includes a driving mode), the passenger seat display 150 may display image content at a narrow viewing angle. "In motion" and driving mode indicate that the driver is driving the vehicle. According to an embodiment of the present disclosure, "In motion" and driving mode may indicate that the vehicle is traveling at a speed exceeding 5 miles per hour.

[0078] In the driving mode, the passenger seat display 150 may display image content at a narrow viewing angle, thereby preventing the driver 10 from viewing the image content displayed on the passenger seat display 150. In the driving mode, only the passenger 20 can view the image content displayed on the passenger seat display 150. In the narrow viewing angle mode, light emitted from the passenger seat display 150 is collimated light in the form of focusing forward, and therefore, only the passenger 20 located in front of the passenger seat display 150 can view the image content displayed on the passenger seat display 150. In the narrow viewing angle mode, the driver 10 located in a direction inclined relative to the front of the passenger seat display 150 is prevented from viewing the image content displayed on the passenger seat display 150.

[0079] like Figure 2A and Figure 2B As shown, the passenger seat display 150 switches between a wide viewing angle and a narrow viewing angle in each of the stop mode and the driving mode, and the switching can be achieved by setting a viewing angle switching element between the backlight unit (BLU) and the display panel. According to an embodiment of the present disclosure, the viewing angle switching element may include a polymer dispersed liquid crystal (PDLC). The electronic device may switch between the wide viewing angle mode and the narrow viewing angle mode by controlling the driving voltage applied to the viewing angle switching element. Figure 3 The switching between the wide viewing angle mode and the narrow viewing angle mode is described in detail.

[0080] Figure 3 1 is a cross-sectional view of a passenger seat display 1100 according to an embodiment of the present disclosure. The passenger seat display 1100 on the left has a wider viewing angle, which may be appropriate when the vehicle is in a stop mode. The passenger seat display 1100 on the right has a narrower viewing angle, which may be used when the vehicle is in a driving mode.

[0081] refer to Figure 3 , the passenger seat display 1100 may include a BLU 1110 , a viewing angle switching element 1120 , and an LCD panel 1130 .

[0082] BLU 1110 may include a light source 1112 (see Fig.10 )、Light guide plate (LGP) 1114 (see Fig.10 ) and reflective member 1116 (see Fig.10 ). Fig.10 The structure of the BLU 1110 is described in detail.

[0083] The LCD panel 1130 may include a thin film transistor (TFT)-LCD panel including liquid crystal molecules and color filters.

[0084] The viewing angle switching element 1120 may be between the BLU 1110 and the LCD panel 1130. The viewing angle switching element 1120 may change the viewing angle of light passing through the LCD panel 1130 by changing the directivity of light emitted from the BLU 1110 according to a driving voltage applied from a power source V. According to an embodiment of the present disclosure, the viewing angle switching element 1120 may include a PDLC.

[0085] Here, the power source V may apply an alternating current (AC) voltage, but is not limited thereto.

[0086] According to an embodiment of the present disclosure, the viewing angle switching element 1120 may include a PDLC layer 1122 and a transparent electrode 1128. The PDLC layer 1122 may include liquid crystal molecules 1124 dispersed in a polymer support medium 1126. The transparent electrode pair 1128 may be respectively on the upper surface and the lower surface of the PDLC layer 1122. The transparent electrode pair 1128 may include polyethylene terephthalate (PET), but is not limited thereto.

[0087] The viewing angle switching element 1120 may change the alignment direction of the liquid crystal molecules 1124 in response to a driving voltage applied from a power source V to the transparent electrode pair 1128 to change the dispersion degree of light passing toward the LCD panel 1130, thereby switching the viewing angle of the light.

[0088] exist Figure 3In the embodiment of the present disclosure shown, the viewing angle switching element is turned off (OFF) indicating that the power supply V does not apply a driving voltage to the viewing angle switching element 1120. In the viewing angle switching element off state, the liquid crystal molecules 1124 in the PDLC layer 1122 can be arranged at different angles (rather than a determined angle). In this case, the PDLC layer 1122 is transparent, and the light incident from the BLU 1110 is scattered by penetrating the viewing angle switching element 1120. The light incident to the LCD panel 1130 by penetrating the viewing angle switching element 1120 is scattered, and the light emitted from the LCD panel 1130 is diffuse light, so that the passenger seat display 1100 can display image content at a wide viewing angle. That is, in the viewing angle switching element off state, the passenger seat display 1100 can operate in a wide viewing angle mode, and not only the passengers sitting on the passenger seat but also the driver can watch the image content displayed on the passenger seat display 1100.

[0089] The viewing angle switching element is turned on (ON) to indicate that the power source V applies a driving voltage to the viewing angle switching element 1120. In the viewing angle switching element on state, the power source V applies a driving voltage to the PDLC layer 1122 through the transparent electrode pair 1128, so that all the liquid crystal molecules 1124 in the PDLC layer 1122 can be aligned in the same direction. For example, when the driving voltage is applied through the transparent electrode 1128, the liquid crystal molecules 1124 can be arranged in parallel in the height direction. In this case, the front of the viewing angle switching element 1120 can be transparent, but when the passenger seat display 1100 is viewed from the side, the viewing angle switching element 1120 can be opaque. The light incident from the BLU 1110 can be collimated light having a constant directivity by being gathered when penetrating the viewing angle switching element 1120. The collimated light can penetrate the LCD panel 1130, so that the passenger seat display 1100 displays the image content. That is, in the viewing angle switching element on state, the passenger seat display 1100 can operate in a narrow viewing angle mode, and only passengers sitting on the passenger seat can view the image content. When the viewing angle switching element is turned on, the driver is prohibited from viewing the image content displayed on the passenger seat display 1100.

[0090] exist Figure 3 In the embodiment of the present disclosure shown, the brightness and color coordinates of the passenger seat display 1100 may change when a driving voltage is applied to the viewing angle switching element 1120 (viewing angle switching element is turned on) or is not applied to the viewing angle switching element 1120 (viewing angle switching element is turned off). Figures 7 to 9 A method of correcting the brightness and color coordinates of the passenger seat display 1100, which change in response to the driving voltage applied to the viewing angle switching element 1120, is described in detail.

[0091] Thus, a passenger seat display having a wider viewing angle in stop mode and a narrower viewing angle in drive mode can apply a drive voltage to the view switching element 1120 when the vehicle is determined to be in drive mode. At least one processor can use sensor input to determine whether the vehicle is in drive mode or stop mode. Thus, at least one processor can control the power supply to selectively apply a drive voltage to the view switching element 1120 based on the sensor input.

[0092] Figure 4 is a block diagram of an electronic device 1000 for controlling a passenger seat display according to the present disclosure.

[0093] refer to Figure 4 , the electronic device 1000 may include a passenger seat display 1100, a sensor 1200, a DC power supply 1310, a DC-AC converter 1320, a processor 1400, a memory 1500, and a storage device 1600. According to an embodiment of the present disclosure, the passenger seat display 1100, the DC power supply 1310, and the DC-AC converter 1320 may not be components of the electronic device 1000, but separate components. According to certain embodiments, the processor 1400 may use input from the sensor 1200 to determine whether the vehicle is in a stop mode or a driving mode. When the processor 1400 determines that the vehicle is in the driving mode, the processor 1400 controls the DC power supply 1310 (in combination with the DC-AC converter) to apply a driving voltage to the passenger display device 110. When the processor 1400 determines that the vehicle is in the stop mode, the processor 1400 causes the driving voltage not to be applied to the passenger display device 110.

[0094] The sensor 1200 can detect the operating state of the vehicle driven by the driver. The sensor 1200 may include a speed sensor 1210, an accelerator (pedal) sensor 1220, and a steering wheel sensor 1230. According to an embodiment of the present disclosure, the sensor 1200 may include at least one of the speed sensor 1210, the accelerator sensor 1220, or the steering wheel sensor 1230. However, the embodiments presented in the present disclosure are not limited thereto, and the sensor 1200 may also include a global positioning system (GPS), an inertial measurement unit (IMU), a radar detection and ranging (RADAR) sensor, a light detection and ranging (LIDAR) sensor, and an image sensor. In addition, the sensor 1200 may include at least one of a temperature / humidity sensor, an infrared sensor, an atmospheric pressure sensor, a proximity sensor, or an RGB sensor (illuminance sensor).

[0095] The speed sensor 1210 can detect the vehicle speed. The speed sensor 1210 can measure the real-time speed and provide data about the measured speed to the processor 1400. The speed sensor 1210 can obtain data about the change of the vehicle speed over time. According to an embodiment of the present disclosure, the speed sensor 1210 can detect the vehicle speed when the vehicle speed is a preset speed or higher. For example, the preset speed can be 5 miles per hour. According to an embodiment of the present disclosure, when the speed sensor 1210 is configured to detect the speed only when the speed is a preset speed or higher, the preset speed can be determined based on user input. In some embodiments, the speed sensor can sense revolutions per minute (RPM) and gear to determine the vehicle speed or receive data from a speedometer.

[0096] When the driver steps on the accelerator, the accelerator sensor 1220 can detect the pressure applied to the vehicle accelerator (accelerator pedal). The accelerator sensor 1220 may include a pressure sensor. The accelerator sensor 1220 can measure the pressure value applied to the accelerator and provide the measured pressure value data to the processor 1400. The accelerator sensor 1220 can be connected to the accelerator and adjacent to the accelerator, but is not limited to this. According to an embodiment of the present disclosure, when a pressure greater than or equal to a preset pressure is applied to the accelerator, the accelerator sensor 1220 can detect the pressure applied to the accelerator and provide the measured pressure value to the processor 1400.

[0097] The steering wheel sensor 1230 may detect whether the driver operates the steering wheel. The steering wheel sensor 1230 may be attached to the steering wheel, but is not limited thereto. The steering wheel sensor 1230 may detect at least one of a turning angle, a turning speed, a turning direction, a number of turning direction switchings, a steering angle, or a number of turning direction switchings of the steering wheel.

[0098] The turning angle of the steering wheel indicates the degree of change in the steering direction of the steering wheel. The steering wheel sensor 1230 can obtain the turning speed by detecting the turning angle and dividing the change amount of the detected turning angle by the unit time.

[0099] The steering wheel rotation direction switch indicates that the steering wheel rotation direction switches from clockwise to counterclockwise, or vice versa. The steering wheel sensor 1230 can detect the steering wheel rotation direction switch through the driver's operation. According to an embodiment of the present disclosure, the steering wheel sensor 1230 can monitor the steering wheel rotation direction switch through the driver's operation and measure the number of steering wheel rotation direction switches per unit time.

[0100] The steering angle of the steering wheel may indicate an angle generated according to the rotation of the steering wheel based on the steering direction of the steering wheel when the traveling direction of the vehicle is the forward direction. The steering wheel sensor 1230 may detect a change in the steering angle of the steering wheel by a driver's operation.

[0101] The steering direction switching of the steering wheel indicates that the steering direction is switched from right to left or vice versa according to the operation of the steering wheel. The steering wheel sensor 1230 may monitor the steering direction switching of the steering wheel by the operation of the driver and detect the number of steering direction switching per unit time.

[0102] The passenger seat display 1100 may include a BLU 1110, a viewing angle switching element 1120, and an LCD panel 1130. The BLU 1110 may include a light source 1112 (see Fig.10 )、LGP 1114(see Fig.10 ) and reflective member 1116 (see Fig.10 ). The BLU 1110 may transfer light emitted from the light source 1112 to the viewing angle switching element 1120.

[0103] The viewing angle switching element 1120 may be between the BLU 1110 and the LCD panel 1130. The viewing angle switching element 1120 may change the viewing angle of light passing through the LCD panel 1130 by changing the directivity of light transferred from the BLU 1110 according to a driving voltage applied from the DC-AC converter 1320.

[0104] According to an embodiment of the present disclosure, the viewing angle switching element 1120 may include PDLC. The viewing angle switching element 1120 may include liquid crystal molecules 1124 dispersed in a polymer support medium 1126 (see Figure 3 ). Figure 4 The viewing angle switching element 1120 and Figure 3 The viewing angle switching element 1120 is the same as that of FIG. 1 , and therefore, reference will not be made herein again. Figure 3 Description of the process.

[0105] The LCD panel 1130 may include a TFT-LCD panel including liquid crystal molecules and color filters.

[0106] The DC power supply 1310 supplies DC power to the components of the electronic device 1000. The DC power supply 1310 may supply DC power to the passenger seat display 1100, the sensor 1200, the processor 1400, and the storage device 1600. According to an embodiment of the present disclosure, the DC power supply 1310 may supply DC power only to the BLU 1110 and the LCD panel 1130 of the passenger seat display 1100.

[0107] The DC-AC converter 1320 converts DC into AC. The DC-AC converter 1320 may convert DC power output from the DC power source 1310 into AC power. The DC-AC converter 1320 may apply the converted AC power to the viewing angle switching element 1120.

[0108] In some embodiments, the processor may send one control signal to the DC power supply 1310 that causes the application of the drive voltage, and another signal that prevents or stops the application of the drive voltage.

[0109] By executing one or more instructions of the program stored in the memory 1500, the processor 1400 can control the functions or operations of the passenger seat display 1100, the sensor 1200, the DC power supply 1310, the DC-AC converter 1320 and the storage device 1600. The processor 1400 may include hardware components for performing arithmetic, logic and input / output operations and signal processing. The processor 1400 may include, for example, at least one of a CPU, a microprocessor, an application processor, a graphics processing unit, an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD) or a field programmable gate array (FPGA), but is not limited thereto. It should also be understood that the electronic device may include multiple processors 1000. Therefore, hereinafter, "processor" should be generally understood to refer to single and multiple processors.

[0110] A program including instructions for controlling components of the electronic device 1000 may be stored in the memory 1500. Processor-readable instructions and program codes may be stored in the memory 1500. In the embodiments disclosed below, the processor 1400 may execute instructions or codes of the program stored in the memory 1500 so that the processor performs various operations. The memory 1500 may include, for example, at least one of a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, or an optical disk.

[0111] The processor 1400 may obtain information input about the operating state of the vehicle from the sensor 1200, and determine the operating mode of the vehicle based on the obtained operating state information. The processor 1400 may determine any one of the operating modes including the driving mode and the stopping mode based on the operating state of the vehicle detected by the sensor 1200. That is, the processor may determine whether the vehicle is moving based on the input from the sensor. According to an embodiment of the present disclosure, the processor 1400 may determine the operating mode of the vehicle as the driving mode when the vehicle speed detected by the speed sensor 1210 exceeds a preset threshold speed, and determine the operating mode of the vehicle as the stopping mode when the detected vehicle speed is less than or equal to the preset threshold speed. For example, the threshold speed may be 5 miles per hour, but is not limited thereto.

[0112] According to an embodiment of the present disclosure, when the accelerator sensor 1220 detects pressure applied to the accelerator, the processor 1400 may determine the operation mode of the vehicle as the driving mode. According to an embodiment of the present disclosure, when the pressure value measured by the accelerator sensor 1220 is a preset reference pressure value or greater, the processor 1400 may determine the operation mode of the vehicle as the driving mode.

[0113] According to an embodiment of the present disclosure, the processor 1400 may obtain information about whether the driver is operating the steering wheel from the steering wheel sensor 1230, and determine the operation mode of the vehicle according to the obtained information about whether the driver is operating the steering wheel. For example, the steering wheel sensor 1230 detects at least one of a change in the turning angle, a turning speed, a change in the turning direction, a turning direction switch, a change in the steering angle, or a turning direction switch of the steering wheel, and the processor 1400 may determine the operation mode of the vehicle as a driving mode, and when the operation of the steering wheel is not detected, the processor 1400 may determine the operation mode of the vehicle as a stop mode. For example, when the turning angle of the steering wheel measured by the steering wheel sensor 1230 is a preset turning angle reference value, the processor 1400 may determine the operation mode of the vehicle as a driving mode. For example, when the turning speed of the steering wheel measured by the steering wheel sensor 1230 is a preset turning speed reference value, the processor 1400 may determine the operation mode of the vehicle as a driving mode. For example, when the number of turning direction switches per unit time measured by the steering wheel sensor 1230 is a preset direction switching number reference value, the processor 1400 may determine the operation mode of the vehicle as a driving mode.

[0114] According to an embodiment of the present disclosure, the processor 1400 may periodically obtain information about the detected operating state from the sensor 1200 according to a preset time interval, and switch the operating mode of the vehicle to any one of the driving mode and the stop mode based on the obtained operating state information.

[0115] Based on the determined driving mode, the processor 1400 may control the DC power supply 1310 to apply a driving voltage to the viewing angle switching element 1120 through the DC-AC converter 1320. According to an embodiment of the present disclosure, when the operation mode of the vehicle is determined to be the driving mode, the processor 1400 may control the DC power supply 1310 to apply a driving voltage to the viewing angle switching element 1120, and when the operation mode of the vehicle is determined to be the stop mode, the processor 1400 may control the DC power supply 1310 not to apply a driving voltage to the viewing angle switching element 1120. When the driving voltage is applied to the viewing angle switching element 1120, the passenger seat display 1100 may operate in a narrow viewing angle mode, and when the driving voltage is not applied to the viewing angle switching element 1120, the passenger seat display 1100 may operate in a wide viewing angle mode. Reference will be made to Figure 6 This is described in detail.

[0116] Note that when the passenger seat display has a wide viewing angle, the emitted light is diffuse light, and when the passenger seat display has a narrow viewing angle, the emitted light is collimated light. As a result, when changing from a wide viewing angle to a narrow viewing angle, or vice versa, the brightness and color (color coordinates will be described below) appear different. When this change occurs, the passenger may notice the change.

[0117] When the driving voltage is applied to the viewing angle switching element, the processor 1400 can adjust the brightness or color coordinates of the passenger seat display to a preset target brightness value or a preset target color coordinate value, respectively. Therefore, in some embodiments, any change in brightness or color representation caused by the reduced viewing angle is imperceptible to the human eye.

[0118] In some embodiments, the passenger seat display 150 may include a plurality of pixels. Thus, "adjusting the brightness of the passenger seat display" may include adjusting the brightness of one or more or all pixels of the passenger seat display. "Adjusting the color coordinates of the passenger seat display" may include adjusting the color coordinates of one or more or all pixels of the passenger seat display. In some embodiments, a preset target brightness compensates for the amount of reduction in brightness of the passenger seat display 1100 that occurs when the viewing angle of the passenger seat display is narrowed. The target brightness value may be set by user input, but is not limited thereto. The preset target color coordinate value compensates for the difference in color appearance that occurs when the viewing angle of the passenger seat display is narrowed. The target color coordinate value is a coordinate value in the CIE XY chromaticity distribution table defined in the xyz color space of the International Commission on Illumination (CIE). The target color coordinate value may be set by user input, but is not limited thereto.

[0119] According to an embodiment of the present disclosure, the processor 1400 can adjust the brightness of the passenger seat display 1100 to a target brightness value by using information about the reduction in brightness value of the passenger seat display 1100 between when the driving voltage is applied to the viewing angle switching element 120 and when the driving voltage is not applied to the viewing angle switching element 1120. That is, the target brightness value is based on the amount of brightness reduction that occurs due to the application of the driving voltage to the viewing angle switching element. Information about the amount of brightness reduction and the reduction rate between when the driving voltage is applied to the viewing angle switching element 1120 and when the driving voltage is not applied to the viewing angle switching element 1120 can be pre-stored in the storage device 1600. The processor 1400 can control the DC power supply 1310 to change the amplitude of the driving current applied to the BLU 1110, thereby adjusting the brightness of the passenger seat display 1100.

[0120] According to an embodiment of the present disclosure, the processor 1400 can adjust the color coordinates of the passenger seat display 1100 to a target brightness value by using information about the amount of change in the color coordinate measurement value of the passenger seat display 1100 when the driving voltage is applied to the viewing angle switching element 1120 or when it is not applied to the viewing angle switching element 1120. That is, the target color coordinate value can be based on the amount of change in the color coordinate that occurs due to the application of the driving voltage to the viewing angle switching element. The processor 1400 can adjust the color coordinates of the passenger seat display 1100 by adjusting the RGB output amount through a timing control board (T-CON board) or an image board, which is configured to control the operation of the LCD panel 1130 of the passenger seat display 1100.

[0121] Reference Figures 7 to 9 The method of adjusting the brightness or color coordinates of the passenger seat display 1100 performed by the processor 1400 is described in detail.

[0122] Figure 5 is a flowchart of a method of controlling a passenger seat display performed by the electronic device 1000 according to an embodiment of the present disclosure.

[0123] Determine whether the vehicle is moving. In some embodiments, this may include operations S510 and S520. In operation S510, the electronic device 1000 obtains operating state information of the vehicle by detecting the operating state of the vehicle driven by the driver. According to an embodiment of the present disclosure, the electronic device 1000 may detect at least one of the vehicle speed, the pressure applied to the vehicle accelerator, or the operation of the vehicle steering wheel. According to an embodiment of the present disclosure, the electronic device 1000 may measure the real-time speed of the vehicle and obtain data about the measured speed. According to an embodiment of the present disclosure, the electronic device 1000 may obtain data about the change of the vehicle speed over time. According to an embodiment of the present disclosure, the electronic device 1000 may detect the vehicle speed when the vehicle speed is a preset speed or higher.

[0124] According to an embodiment of the present disclosure, the electronic device 1000 may detect the pressure applied to the vehicle accelerator by the driver. According to an embodiment of the present disclosure, the electronic device 1000 may measure the pressure value applied to the accelerator and obtain the measured pressure value data.

[0125] According to an embodiment of the present disclosure, the electronic device 1000 may detect at least one of a rotating angle, a rotating speed, a rotating direction, a number of rotating direction switchings, a steering angle, or a number of steering direction switchings of a steering wheel.

[0126] In operation S520, the electronic device 1000 determines the vehicle operation mode of any one of the driving mode and the stop mode based on the obtained operation status information. According to an embodiment of the present disclosure, the electronic device 1000 may determine the vehicle operation mode as the driving mode when the detected vehicle speed exceeds a preset threshold speed, and determine the vehicle operation mode as the stop mode when the detected vehicle speed is less than or equal to the preset threshold speed. According to an embodiment of the present disclosure, when pressure applied to the accelerator is detected, the electronic device 1000 may determine the vehicle operation mode as the driving mode. According to an embodiment of the present disclosure, when operation of the steering wheel is detected, the electronic device 1000 may determine the vehicle operation mode as the driving mode.

[0127] The electronic device 1000 can obtain information about the vehicle operating state by periodically detecting at least one of the vehicle speed, the pressure applied to the accelerator, or the operation of the steering wheel according to a preset time interval, and switch the vehicle's operating mode to any one of the driving mode and the stop mode based on the obtained operating state information.

[0128] The method may include applying a driving voltage to a perspective switching element of a passenger seat display when it is determined that the vehicle is in motion, which may include operation S530 in some embodiments. In operation S530, the electronic device 1000 controls the driving voltage applied to the perspective switching element based on the determined vehicle operating mode. According to an embodiment of the present disclosure, when the operating mode of the vehicle is determined to be a driving mode, the electronic device 1000 may apply a driving voltage to the perspective switching element, and when the operating mode of the vehicle is determined to be a stop mode, the electronic device 1000 may not apply a driving voltage to the perspective switching element. Here, the driving voltage applied to the perspective switching element may be an AC voltage.

[0129] The method may include, when the driving voltage is applied to the viewing angle switching element, adjusting the brightness or color coordinates of the passenger seat display to a target brightness value or a target color coordinate value, respectively, which in some embodiments may include operation S540.

[0130] In operation S540, the electronic device 1000 adjusts brightness or color coordinates to compensate for a brightness reduction amount or a color coordinate change amount of the passenger seat display that occurs in response to controlling a driving voltage applied to the viewing angle switching element.

[0131] According to an embodiment of the present disclosure, the electronic device 1000 can adjust the brightness of the passenger seat display to a target brightness value based on the amount of brightness reduction of the passenger seat display that occurs due to the application of a driving voltage to the viewing angle switching element. In some embodiments, the target brightness value can be preset. According to an embodiment of the present disclosure, the target brightness value can be set by user input. The electronic device 1000 can adjust the brightness of the passenger seat display by controlling the amplitude of the driving current applied to the light source of the passenger seat display.

[0132] According to an embodiment of the present disclosure, the electronic device 1000 may adjust the color coordinates of the passenger seat display to a target color coordinate value, wherein the target color coordinate value is based on the amount of color coordinate change that occurs due to application of a driving voltage to the viewing angle switching element. According to an embodiment of the present disclosure, the electronic device 1000 may adjust the color coordinate value of the passenger seat display by adjusting the RGB output amount through a T-CON board or an image board configured to control the operation of the LCD panel of the passenger seat display.

[0133] Figure 6 is a flowchart of a method of controlling a passenger seat display according to a driving mode and a stopping mode according to an embodiment of the present disclosure.

[0134] In operation S610, the electronic device determines the operation mode of the vehicle. According to an embodiment of the present disclosure, the electronic device determines the operation mode of the vehicle based on the sensor 1200 (see Figure 4) determines the operating mode of either the driving mode (S620) or the stopping mode (S622) based on the operating state of the vehicle detected by the user.

[0135] When the operation mode is determined to be the driving mode (S620), the electronic device switches the viewing angle switching element to an on state by applying a driving voltage to the viewing angle switching element in operation S630.

[0136] When the viewing angle switching element is switched to the on state, light emitted from the BLU and penetrating the viewing angle switching element is concentrated into the shape of collimated light, and thus the passenger seat display operates in the narrow viewing angle mode in operation S640.

[0137] In operation S650, the electronic device corrects the brightness or color coordinates of the passenger seat display based on the target brightness value or the target color coordinate value in the narrow viewing angle mode to compensate for the reduced brightness or changed color coordinates. According to an embodiment of the present disclosure, the electronic device can correct the brightness or color coordinates of the passenger seat display by using the target brightness value or the target color coordinate value pre-stored in the storage device 1600 (see Figure 4 ) in the information about the brightness reduction amount and reduction rate of the passenger seat display in the narrow viewing angle mode to adjust the brightness value of the passenger seat display. According to an embodiment of the present disclosure, the electronic device can adjust the brightness value of the passenger seat display by using the information pre-stored in the storage device 1600 (see Figure 4 ) about the change in the color coordinate values ​​of the passenger seat display in the narrow viewing angle mode to adjust the color coordinates of the passenger seat display.

[0138] When the operation mode is determined to be the stop mode (S622) in operation S610, the electronic device does not apply the driving voltage to the viewing angle switching element, and thus, the viewing angle switching element is switched to a closed state in operation S632.

[0139] When the viewing angle switching element is switched to the off state, light emitted from the BLU and penetrating the viewing angle switching element is scattered to have a diffuse light shape, and thus, the passenger seat display operates in the wide viewing angle mode in operation S642.

[0140] In operation S652, the electronic device corrects the brightness or color coordinates of the passenger seat display based on the target brightness value or the target color coordinate value in the wide viewing angle mode to compensate for the reduced brightness or changed color coordinates. According to an embodiment of the present disclosure, the electronic device can correct the brightness or color coordinates of the passenger seat display based on the target brightness value or the target color coordinate value in the wide viewing angle mode by using the pre-stored in the storage device 1600 (see Figure 4 ) in the information about the brightness reduction amount and reduction rate of the passenger seat display in the wide viewing angle mode can adjust the brightness value of the passenger seat display. According to an embodiment of the present disclosure, the electronic device can adjust the brightness value of the passenger seat display by using the information pre-stored in the storage device 1600 (see Figure 4) about the change in the color coordinate values ​​of the passenger seat display in the wide viewing angle mode to adjust the color coordinates of the passenger seat display.

[0141] Regarding a passenger seat display among displays installed inside a vehicle, when the vehicle is stopped (stop mode), not only a passenger sitting on a passenger seat but also a driver can view image contents displayed on the passenger seat display, but for safety reasons, when the vehicle is traveling (driving mode), the driver should not view image contents displayed on the passenger seat display. Furthermore, according to traffic regulations, the driver is prohibited from viewing contents while driving, except for special purpose contents such as route guidance navigation. A technology for performing control is required so that a passenger sitting on a passenger seat can view contents displayed on a passenger seat display regardless of when the vehicle is traveling or when the vehicle is stopped.

[0142] Reference to the present disclosure Figures 3 to 6 The electronic device according to the present disclosure can detect the operating state of the vehicle and control the PDLC layer 1122 (see FIG. 1 ) according to the detected operating state. Figure 3 ) by adjusting the viewing angle of the passenger seat display to any one of the narrow viewing angle mode (S640) and the wide viewing angle mode (S642) to perform control so that only the passenger sitting on the passenger seat can view the image content displayed on the passenger seat display during driving, and not only the passenger sitting on the passenger seat but also the driver can view the image content displayed on the passenger seat display during stopping. Therefore, the electronic device according to the present disclosure can promote safe driving and compliance with traffic regulations, and improve user convenience by enabling the passenger sitting on the passenger seat to enjoy the image content displayed on the passenger seat display regardless of the operating state of the vehicle.

[0143] The electronic device according to the present disclosure can switch the viewing angle of the passenger seat display by applying or not applying a driving voltage to the viewing angle switching element, and the brightness or color coordinates of the passenger seat display can be changed according to the use of the viewing angle switching element. It is necessary to perform control so that the passenger sitting in the passenger seat does not realize the brightness change or color change when the vehicle is running or when the vehicle is stopped. Figures 7 to 9 A method of compensating brightness or color coordinates of a passenger seat display in each of a driving mode and a stop mode, performed by an electronic device according to the present disclosure, is described in detail.

[0144] Figure 7 Adjusting the brightness of a passenger seat display according to an embodiment of the present disclosure is shown. Figure 7 The values ​​shown in are for ease of description only and the present disclosure is not limited to Figure 7Values ​​shown in and described below.

[0145] refer to Figure 7 , the brightness measurement value data 700 includes information on a brightness measurement value 702, a brightness change amount 704, and a brightness change rate 706 for each of when there is no viewing angle switching element, when a driving voltage is applied to the viewing angle switching element (the viewing angle switching element is turned on), and when a driving voltage is not applied to the viewing angle switching element (the viewing angle switching element is turned off). Figure 6 , the viewing angle switching element is turned on (S630) to indicate that the operation mode of the vehicle is determined to be the driving mode (S620), and in this case, the passenger seat display is operated in the narrow viewing angle mode (S640). The viewing angle switching element is turned off to indicate that the operation mode of the vehicle is determined to be the stop mode (S622), and in this case, the passenger seat display is operated in the wide viewing angle mode (S642). The brightness change amount 704 and the brightness change rate 706 respectively indicate the difference between the reference value of the brightness measurement value of the passenger seat display not including the viewing angle switching element and the brightness measurement value of the passenger seat display including the viewing angle switching element, and the ratio of the difference to the reference value.

[0146] According to an embodiment of the present disclosure, the brightness measurement value data 700 may be pre-stored in the storage device 1600 (see Figure 4 )middle.

[0147] Referring to the brightness measurement value data 700, for the passenger seat display that does not include the viewing angle switching element, the brightness measurement value 702 is 908 nit (nits). For the passenger seat display that includes the viewing angle switching element, when the viewing angle switching element is turned on (i.e., in the narrow viewing angle mode), the brightness measurement value 702 is 784 nit, the brightness change 704 is -124 nit, and the brightness change rate 706 is -13.65%. When the viewing angle switching element is turned off (i.e., in the wide viewing angle mode), the brightness measurement value 702 is 501 nit, the brightness change 704 is -407 nit, and the brightness change rate 706 is -44.82%. Referring to the brightness measurement value data 700, the brightness reduction amount in the wide viewing angle mode (the viewing angle switching element is turned off) is greater than the brightness reduction amount in the narrow viewing angle mode (the viewing angle switching element is turned on).

[0148] The target brightness value 710 indicates a target brightness value of the passenger seat display including the viewing angle switching element. The target brightness value 710 may indicate the same target brightness value that the passenger seat display should measure when the viewing angle switching element is turned on and when the viewing angle switching element is turned off. The target brightness value 710 may be preset and pre-stored in the storage device 1600 (see Figure 4 According to an embodiment of the present disclosure, the target brightness value 710 may be set by user input. Figure 7In the illustrated embodiment of the present disclosure, the target brightness value 710 is set to 700 nit.

[0149] The electronic device may adjust the brightness of the passenger seat display to 700 nit to compensate for the brightness reduction of the passenger seat display in each of the viewing angle switching element off state 720 and the viewing angle switching element on state 730. Figure 7 In the embodiment of the present disclosure shown in FIG. 1 , in the viewing angle switching element off state 720 (i.e., in the stop mode), the electronic device can determine the brightness correction value of the passenger seat display to be 1269 nit by performing an arithmetic operation (100% / (100%-44.82%)) on the target brightness value 700 nit. The electronic device can control the light source 1112 (see FIG. 1112 ) applied to the passenger seat display. Fig.10 ) to adjust the brightness of the passenger seat display. According to an embodiment of the present disclosure, when the electronic device applies a driving current for achieving a brightness of 1269 nit (which is a brightness correction value of the passenger seat display) to the light source 1112, the brightness of the light emitted from the light source 1112 is reduced by penetrating the viewing angle switching element, and therefore, the brightness of the passenger seat display can be adjusted to 700 nit (which is a target brightness value).

[0150] When the viewing angle switching element is in the on state 730 (i.e., in the driving mode), the electronic device can determine the brightness correction value of the passenger seat display to be 810 nit by performing an arithmetic operation (100% / (100%-13.65%)) on the target brightness value 700 nit using the brightness change rate -13.65%. The electronic device can adjust the brightness of the passenger seat display by controlling the amplitude of the driving current applied to the light source 1112 of the passenger seat display. According to an embodiment of the present disclosure, when the electronic device applies a driving current to the light source 1112 to achieve a brightness of 810 nit (which is the brightness correction value of the passenger seat display), the brightness of the light emitted from the light source 1112 is reduced by penetrating the viewing angle switching element, and therefore, the brightness of the passenger seat display can be adjusted to 700 nit (which is the target brightness value).

[0151] Figure 8 Adjusting the color coordinates of a passenger seat display according to an embodiment of the present disclosure is shown. Figure 8 The values ​​shown in are only for the convenience of description, and the present disclosure is not limited to Figure 8 Values ​​shown in and described below.

[0152] refer to Figure 8For each of the X color coordinate and the Y color coordinate, the color coordinate measurement value data 800 includes information about the color coordinate measurement value and the measurement value change amount when the viewing angle switching element is not present, when the driving voltage is applied to the viewing angle switching element (the viewing angle switching element is turned on), and when the driving voltage is not applied to the viewing angle switching element (the viewing angle switching element is turned off). The color coordinate measurement value data 800 may include coordinate values ​​in the CIE XY chromaticity distribution table defined in the xyz color space of the CIE.

[0153] The X color coordinate measurement value change amount 804 and the Y color coordinate measurement value change amount 808 respectively indicate the difference between the reference value as the X color coordinate measurement value of the passenger seat display not including the view switching element and the X color coordinate measurement value of the passenger seat display including the view switching element, and the difference between the reference value as the Y color coordinate measurement value of the passenger seat display not including the view switching element and the Y color coordinate measurement value of the passenger seat display including the view switching element.

[0154] According to an embodiment of the present disclosure, the color coordinate measurement value data 800 may be pre-stored in the storage device 1600 (see Figure 4 )middle.

[0155] Referring to the color coordinate measurement value data 800, for the passenger seat display that does not include the viewing angle switching element, the X color coordinate measurement value 802 is 0.3075 and the Y color coordinate measurement value 806 is 0.3333. For the passenger seat display that includes the viewing angle switching element, when the viewing angle switching element is turned on (i.e., in the narrow viewing angle mode), the X color coordinate measurement value 802 is 0.3166 and the Y color coordinate measurement value 806 is 0.3428. When the viewing angle switching element is turned on, the X color coordinate measurement value change 804 is +0.0091 and the Y color coordinate measurement value change 808 is +0.0095. When the viewing angle switching element is turned off (i.e., in the wide viewing angle mode), the X color coordinate measurement value 802 is 0.3225 and the Y color coordinate measurement value 806 is 0.3515. When the viewing angle switching element is turned off, the X color coordinate measurement value change 804 is +0.0150 and the Y color coordinate measurement value change 808 is +0.0182. Referring to the color coordinate measurement value data 800, the X color coordinate measurement value change amount and the Y color coordinate measurement value change amount in the wide viewing angle mode (viewing angle switching element is off) are greater than the X color coordinate measurement value change amount and the Y color coordinate measurement value change amount in the narrow viewing angle mode (viewing angle switching element is on).

[0156] The target color coordinate value 810 indicates the target color coordinate value of the passenger seat display including the viewing angle switching element. The target color coordinate value 810 may indicate the same target color coordinate value that the passenger seat display should measure when the viewing angle switching element is turned on and when the viewing angle switching element is turned off. The target color coordinate value 810 may be preset and pre-stored in the storage device 1600 (see Figure 4 ). According to an embodiment of the present disclosure, the target color coordinate value 810 may be set by user input. Figure 8 In the illustrated embodiment, the target color coordinate value 810 is set to 0.3302 for the X color coordinate and 0.3401 for the Y color coordinate.

[0157] The electronic device may adjust the color coordinates of the passenger seat display to the target color coordinate value 810 (0.3302, 0.3401) to compensate for the amount of change in the color coordinates of the passenger seat display in each of the viewing angle switching element being turned on and the viewing angle switching element being turned off. Figure 8 In the embodiment of the present disclosure shown, in the view switching element on state 820 (i.e., in the driving mode), the electronic device can calculate the correction value 824 by using the value information of the X color coordinate change amount 804 and the Y color coordinate measurement value change amount 808 of the color coordinate measurement value data 800. The correction value 824 can be calculated by reversing the signs of the X color coordinate measurement value change amount 804 and the Y color coordinate measurement value change amount 808 in the view switching element on state 820. For example, the correction value 824 of the X color coordinate can be calculated as -0.0091 by reversing the sign of +0.0091 as the X color coordinate measurement value change amount 804, and the correction value 824 of the Y color coordinate can be calculated as -0.0095 by reversing the sign of +0.0095 as the Y color coordinate measurement value change amount 808. The adjustment value 826 can be obtained by moving the color coordinate by the correction value 824 relative to the target color coordinate value 810. According to an embodiment of the present disclosure, the adjustment value 826 may be calculated by arithmetic operation of the target color coordinate value 810 and the correction value 824. For example, the adjustment value 826 of the X color coordinate may be calculated as 0.3211 by calculating 0.3302-0.0091, and the adjustment value 826 of the Y color coordinate may be calculated as 0.3251 by calculating 0.3401-0.0095.

[0158] When switching from the viewing angle switching element on state 820 to the viewing angle switching element off state 830 (i.e., in the stop mode), the electronic device may calculate a correction value 834 by using value information of the X color coordinate measurement value change amount 804 and the Y color coordinate measurement value change amount 808 of the color coordinate measurement value data 800. The correction value 834 may be obtained by calculating the difference between the color coordinate measurement value change amount in the viewing angle switching element on state 820 and the color coordinate measurement value change amount in the viewing angle switching element off state 830. Referring to the color coordinate measurement value data 800, the X color coordinate measurement value change amount 804 in the viewing angle switching element on state 820 is +0.0091, and the X color coordinate measurement value change amount 804 in the viewing angle switching element off state 830 is +0.0150. The correction value 834 of the X color coordinate can be calculated as -0.0059, which is the difference between +0.0091 and +0.0150, where +0.0091 is the X color coordinate measurement value change 804 in the view switching element on state 820, and +0.0150 is the X color coordinate measurement value change 804 in the view switching element off state 830. Similarly, the Y color coordinate measurement value change 808 in the view switching element on state 820 is +0.0095, and the Y color coordinate measurement value change 808 in the view switching element off state 830 is +0.0182. The correction value 834 of the Y color coordinate can be calculated as -0.0087, which is the difference between +0.0095 and +0.0182, where +0.0095 is the change 808 in the Y color coordinate measurement value when the perspective switching element is in the on state 820, and +0.0182 is the change 808 in the Y color coordinate measurement value when the perspective switching element is in the off state 830.

[0159] The adjustment value 836 may be obtained by shifting the color coordinate by the correction value 834 relative to the target color coordinate value 810. According to an embodiment of the present disclosure, the adjustment value 836 may be calculated by an arithmetic operation of the target color coordinate value 810 and the correction value 834. For example, the adjustment value 836 of the X color coordinate may be calculated as 0.3243 by calculating 0.3302-0.0059, and the adjustment value 836 of the Y color coordinate may be calculated as 0.3314 by calculating 0.3401-0.0087.

[0160] Fig. 9 is a flow chart of a method for adjusting the brightness or color coordinates of a passenger seat display according to an embodiment of the present disclosure.

[0161] In operation S910, the electronic device sets a target brightness value or a target color coordinate value of the passenger seat display. The target brightness value indicates a target brightness value of the passenger seat display including the viewing angle switching element, and the target color coordinate value indicates a target color coordinate value of the passenger seat display including the viewing angle switching element. The target brightness value or the target color coordinate value may be set by user input. The target brightness value or the target color coordinate value may be stored in the storage device 1600 (see FIG. 16 ) of the electronic device. Figure 4 )middle.

[0162] In operation S920, when the operation mode is switched, the electronic device calculates the brightness correction value or color coordinate correction value for adjustment to the target brightness value or the target color coordinate value based on the brightness reduction amount or the color coordinate change amount information according to the switched operation mode. According to an embodiment of the present disclosure, the electronic device can obtain information about the brightness reduction amount and the reduction rate of the passenger seat display when the driving voltage is applied to the viewing angle switching element and when the driving voltage is not applied to the viewing angle switching element from the brightness measurement value data pre-stored in the storage device 1600, and calculate the brightness correction value by using the obtained information about the brightness reduction amount and the reduction rate. For example, in the driving mode, since the driving voltage is not applied to the viewing angle switching element, the electronic device can calculate the brightness correction value by using the brightness reduction amount and the brightness reduction rate value in the closed state of the viewing angle switching element to adjust the brightness of the passenger seat display to the target brightness value. In addition, in the stop mode, since the driving voltage is applied to the viewing angle switching element, the electronic device can calculate the brightness correction value by using the brightness reduction amount and the brightness reduction rate value in the open state of the viewing angle switching element to adjust the brightness of the passenger seat display to the target brightness value. Already referenced Figure 7 The specific method for calculating the brightness correction value is described in detail, so this article will not repeat it for reference Figure 7 Description of the process.

[0163] According to an embodiment of the present disclosure, the electronic device can obtain information about the amount of change in the color coordinates of the passenger seat display when the driving voltage is applied to the viewing angle switching element and when the driving voltage is not applied to the viewing angle switching element from the color coordinate measurement value data pre-stored in the storage device 1600, and calculate the color coordinate correction value by using the obtained information about the amount of change in the color coordinates. For example, in the driving mode, because the driving voltage is not applied to the viewing angle switching element, the color coordinate correction value for adjusting the color coordinates of the passenger seat display to the target color coordinate value can be calculated by using the color coordinate change value in the viewing angle switching element off state. In addition, in the stop mode, because the driving voltage is applied to the viewing angle switching element, the color coordinate correction value for adjusting the color coordinates of the passenger seat display to the target color coordinate value can be calculated by using the color coordinate change value in the viewing angle switching element on state. Reference has been made to Figure 8 The specific method for calculating the color coordinate correction value is described in detail, so this article will not repeat it for reference Figure 8 Description of the process.

[0164] In operation S930, the electronic device adjusts the brightness or color coordinates of the passenger seat display by using the calculated brightness correction value or color coordinate correction value. According to an embodiment of the present disclosure, the electronic device can control the light source 1112 (see FIG. 114 ) applied to the passenger seat display. Fig.10 ) to adjust the brightness of the passenger seat display. According to an embodiment of the present disclosure, the electronic device can adjust the brightness of the passenger seat display by determining the amplitude of the driving current based on the calculated brightness correction value and applying the determined amplitude of the driving current to the light source 1112.

[0165] According to an embodiment of the present disclosure, the electronic device may adjust the color coordinates of the passenger seat display by adjusting the RGB output amount through a T-CON board or an image board configured to control the LCD panel 1130 of the passenger seat display (see Fig.10 ) operation. According to an embodiment of the present disclosure, the electronic device may adjust the color coordinates of the passenger seat display based on the calculated color coordinate correction value. According to an embodiment of the present disclosure, the electronic device may adjust the color coordinates of the passenger seat display by using a software tuning method.

[0166] The program executed by the electronic device 1000 described in the specification may be implemented by hardware components, software components, and / or a combination of hardware components and software components. The program may be executed by all systems capable of executing computer-readable instructions.

[0167] Software may include computer programs, codes, instructions or a combination thereof and may constitute a processing device to operate as desired or to command the processing device independently or collectively.

[0168] The software may be implemented by a computer program including instructions stored in a computer-readable storage medium. Examples of computer-readable storage media may include magnetic storage media (e.g., ROM, RAM, floppy disk, hard disk, etc.) and optical recording media (e.g., CD-ROM, digital versatile disk (DVD), etc.). Computer-readable storage media may be distributed on network-coupled computer systems to store and execute computer-readable code in a distributed manner. The medium may be read by a computer, stored in a memory, and executed by a processor.

[0169] The computer-readable storage medium may be provided in the form of a non-transitory storage medium. In this document, the term "non-transitory" only means that the storage medium is tangible and does not include signals, and does not distinguish whether data is stored in the storage medium semi-permanently or temporarily.

[0170] In addition, the program according to the embodiment of the present disclosure may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer.

[0171] A computer program product may include a software program or a non-transitory computer-readable storage medium in which a software program is stored. For example, a computer program product may include a computer program that is downloaded by a manufacturing company of an electronic device or an electronic market (e.g., Google Play Store). TM or App Store TM ) A product in the form of a software program that is electronically distributed (e.g., a downloadable application). For electronic distribution, at least a portion of the software program may be stored in a storage medium or temporarily generated. In this case, the storage medium may be included in a server of the manufacturing company, a server of the electronic market, or a relay server configured to temporarily store the software program.

[0172] The computer program product may include a storage medium of a server or a storage medium of a device in a system including a server and a device. Alternatively, when there is a third device (e.g., a smart phone) connected to the server or the electronic apparatus 1000 by communication, the computer program product may include a storage medium of the third device. Alternatively, the computer program product may include a software program to be sent from the server to the electronic apparatus 1000 or the third device or from the third device to the device.

[0173] In this case, one of the server, the electronic device 1000, and the third device may execute the computer program product and perform the method according to the embodiment of the present disclosure. Alternatively, two or more of the server, the electronic device 1000, and the third device may execute the computer program product and perform the method according to the embodiment of the present disclosure in a distributed manner.

[0174] For example, the electronic device 1000 may execute a computer program product stored in a server to control the electronic device 1000 connected to the server through communication so that the electronic device 1000 performs the method according to an embodiment of the present disclosure.

[0175] As another example, the third device may execute the computer program product to control a device connected to the third device through communication so that the device executes the method according to the embodiment of the present disclosure.

[0176] When the third device executes the computer program product, the third device may download the computer program product from the server and execute the downloaded computer program product. Alternatively, the third device may execute the computer program product provided in a preloaded state, thereby executing the method according to an embodiment of the present disclosure.

[0177] Fig.10 is a cross-sectional view of a passenger seat display 1100 according to an embodiment of the present disclosure.

[0178] refer to Fig.10 , the passenger seat display 1100 may include a BLU 1110, a viewing angle switching element 1120, and an LCD panel 1130. The viewing angle switching element 1120 may be on an upper surface of the BLU 1110, and the viewing angle switching element 1120 may be spaced a certain distance from the BLU 1110. The LCD panel 1130 may be on an upper surface of the viewing angle switching element 1120.

[0179] Although not shown, according to an embodiment of the present disclosure, an optical film may be formed between the BLU 1110 and the viewing angle switching element 1120. The optical film may be laminated by an optically transparent adhesive or formed into a stacked structure of films stacked in a state where an air gap exists between the BLU 1110 and the viewing angle switching element 1120.

[0180] The BLU 1110 may include a light source 1112, an LGP 1114, a reflective member 1116, and a prism plate 1118. The light source 1112 may output light to an edge of the LGP 1114. According to an embodiment of the present disclosure, the light source 1112 may include a light emitting diode (LED). According to certain embodiments, the brightness of the passenger seat display 150 may be changed by changing the magnitude of a driving current applied to the light source 1112.

[0181] The LGP 1114 may transmit light to the LCD panel 1130 by changing the path of light incident from the light source 1112. The LGP 1114 may change the directivity of scattered light that has no specific angle with the direction of the second surface 1114-2 facing the prism plate 1118. A fine pattern may be formed on the second surface 1114-2 of the LGP 1114 to enhance the directivity of light and improve the concentration of light. Fig.13 and Fig.14 This is described in detail.

[0182] The reflective member 1116 is a component that improves light efficiency by providing recirculation of light reflected by the LGP 1114. The reflective member 1116 may be adjacent to the first surface 1114-1 of the LGP 1114. The reflective member 1116 may be arranged to contact the first surface 1114-1 of the LGP 1114, but is not limited thereto. According to an embodiment of the present disclosure, the reflective member 1116 may be spaced a certain distance from the LGP 1114. Fig.11 and Fig.12 This is described in detail. According to an embodiment of the present disclosure, the reflective member 1116 may include silver.

[0183] The prism plate 1118 may be adjacent to the second surface 1114-2 of the LGP 1114. The prism plate 1118 may include a plurality of prism patterns 1118p protruding in an inverted triangle in a direction facing the second surface 1114-2 of the LGP 1114. The plurality of prism patterns 1118p are fine structured patterns formed on a surface of the prism plate 1118, and may protrude in a direction facing the LGP 1114. By using the diffraction or refraction of light output from the LGP 1114, the plurality of prism patterns 1118p may switch the direction of the light to a vertical direction relative to the horizontal direction of the prism plate 1118. The prism plate 1118 may include a plurality of prism patterns 1118p to improve the concentration of light output from the LGP 1114.

[0184] The plurality of prism patterns 1118p may be formed by using a tool that performs structuring by casting and curing or extruding duplication technology. The tool is produced by using engraving, embossing, laser ablation, or photolithography. However, the above method is merely an example of forming the plurality of prism patterns 1118p, and the embodiments presented in the present disclosure are not limited thereto.

[0185] The prism plate 1118 may include acrylic resin such as polymethyl methacrylate (PMMA), polystyrene, polycarbonate, polyester, and silicon, but is not limited thereto.

[0186] The viewing angle switching element 1120 may be between the BLU 1110 and the LCD panel 1130. According to an embodiment of the present disclosure, the viewing angle switching element 1120 may include a PDLC. Figure 3 and Figure 4 The perspective switching element 1120 has been described, and therefore, reference will not be repeated herein. Figure 3 and Figure 4 Description of the process.

[0187] The LCD panel 1130 may include a TFT-LCD panel including liquid crystal molecules and color filters.

[0188] Fig.11 is a cross-sectional view of a BLU 1110 of a passenger seat display according to an embodiment of the present disclosure.

[0189] refer to Fig.11 , the BLU 1110 may include a light source 1112, an LGP 1114, a reflective member 1116, and a prism plate 1118. The light source 1112, the LGP 1114, and the prism plate 1118 are Fig.10 Therefore, this article will not repeat the reference. Fig.10 Description of the process.

[0190] The reflective member 1116 may be adjacent to the first surface 1114-1 of the LGP 1114 and spaced apart a preset distance from the LGP 1114. An air gap may be formed between the reflective member 1116 and the LGP 1114.

[0191] The plurality of connection members 1115 may be between the reflective member 1116 and the first surface 1114-1 of the LGP 1114. The plurality of connection members 1115 may be formed in a cylindrical shape, but are not limited thereto. According to an embodiment of the present disclosure, the plurality of connection members 1115 may be formed in a cylindrical structure having a circular cross-section with a diameter greater than or equal to 20 μm and less than 50 μm and having a height within a range of greater than or equal to 2 μm and less than 5 μm. Fig.12 The cross-sectional shapes of the plurality of connection members 1115 are described in detail.

[0192] Fig.12 is a bottom view of the LGP 1114 of the passenger seat display according to an embodiment of the present disclosure. Fig.12 For ease of description, the reflective member 1116 is not shown (see Fig.11 ).

[0193] refer to Fig.12, a plurality of connection members 1115 may be on the first surface 1114-1 of the LGP 1114. The plurality of connection members 1115 may connect the LGP 1114 to the reflective member 1116. The plurality of connection members 1115 may be formed in a cylindrical shape having the same height as the distance spaced between the first surface 1114-1 of the LGP 1114 and the reflective member 1116.

[0194] The plurality of connectors 1115 may be spaced apart from each other by a preset distance. Fig.12 In the illustrated embodiment of the present disclosure, the plurality of connection members 1115 may be spaced apart from each other by a distance d. For example, the plurality of connection members 1115 may be spaced apart from each other by a distance d greater than or equal to 60 μm and less than 110 μm, but is not limited thereto.

[0195] The cross section of each of the plurality of connection members 1115 may be circular. The diameter r of each of the plurality of connection members 1115 may be greater than or equal to 20 μm and less than 50 μm. However, this is merely illustrative, and the diameter r of each of the plurality of connection members 1115 is not limited thereto.

[0196] although Fig.12 It is shown that the cross section of each of the plurality of connection members 1115 is circular, but the embodiments of the present disclosure are not limited thereto. According to an embodiment of the present disclosure, the plurality of connection members 1115 may have a columnar shape having a quadrilateral or polygonal cross section.

[0197] Fig.13 is a perspective view of an LGP 1114 of a passenger seat display according to an embodiment of the present disclosure.

[0198] refer to Fig.13 , a plurality of lens patterns 1114a may be formed on the second surface 1114-2 of the LGP 1114. The plurality of lens patterns 1114a may be formed in a shape having a certain width in a first direction (X-axis direction), extending in a second direction (Y-axis direction), and protruding a certain height in a height direction (Z-axis direction). The plurality of lens patterns 1114a may be formed in a shape facing the prism plate 1118 (see Fig.10 ) direction.

[0199] According to an embodiment of the present disclosure, a height h of the plurality of lens patterns 1114 a may be greater than or equal to 5 μm and less than 10 μm, and a width w thereof may be greater than or equal to 17 μm and less than 30 μm, but the embodiments of the present disclosure are not limited thereto.

[0200] A plurality of lens patterns 1114 a may be included to improve light-condensing performance of the LGP 1114 .

[0201] Fig.14is a perspective view of an LGP 1114 of a passenger seat display according to an embodiment of the present disclosure.

[0202] refer to Fig.14 , a plurality of lens patterns 1114b may be formed on the second surface 1114-2 of the LGP 1114. The plurality of lens patterns 1114b may be formed in a shape having a certain width in a first direction (X-axis direction), extending in a second direction (Y-axis direction), and protruding a certain height in a height direction (Z-axis direction). The plurality of lens patterns 1114b may be formed in a shape facing the prism plate 1118 (see Fig.10 ) direction.

[0203] The plurality of lens patterns 1114b may be spaced apart from each other by a preset distance d. According to an embodiment of the present disclosure, the plurality of lens patterns 1114b may be formed to have a distance d greater than or equal to 12 μm and less than 25 μm therebetween. However, this is merely illustrative, and the distance d spaced apart from each other by the plurality of lens patterns 1114b is not limited thereto.

[0204] A plurality of lens patterns 1114 b may be included to improve light-condensing performance of the LGP 1114 .

[0205] Fig.15 is a cross-sectional view of a prismatic panel 1118 of a passenger seat display according to an embodiment of the present disclosure.

[0206] refer to Fig.15 , the prism plate 1118 may be included in the direction facing the LGP 1114 (see Fig.10 ) direction. The plurality of prism patterns 1118p are fine structured patterns formed on the surface of the prism plate 1118 and may be formed in a direction facing the LGP 1114 (see Fig.10 ) direction.

[0207] The plurality of prism patterns 1118p may be formed in an inverted triangle shape and include a first surface 1118-1 and a second surface 1118-2. According to an embodiment of the present disclosure, the second surface 1118-2 may be formed in a multi-surface structure having different angles. The second surface 1118-2 may include a (2-1) surface 1118a formed to have an α° angle relative to a horizontal plane and a (2-2) surface 1118b formed to have a β° angle relative to a horizontal plane.

[0208] According to an embodiment of the present disclosure, α° may be greater than β°. By using the (2-1)th surface 1118a formed at an angle of α° relative to the horizontal plane, the light from the LGP 1114 (see Fig.10) output light, and using the (2-2)th surface 1118b formed at an angle of β° relative to the horizontal plane to refract the refracted light again at an angle greater than α°, Fig.15 The prism plate 1118 shown in FIG. Fig.10 The prism plate 1118 shown in FIG. 1 further improves the light concentration. Fig.15 The prism panel 1118 shown can provide a brightness in front of the passenger seat display greater than that including Fig.10 The prism plate 1118 shown (see Fig.10 )’s brightness in front of the passenger seat display 1110.

[0209] Fig.16 is a cross-sectional view of a prismatic panel 1118 of a passenger seat display according to an embodiment of the present disclosure.

[0210] The prism plate 1118 may be included in the direction facing the LGP 1114 (see Fig.10 ) direction. The plurality of prism patterns 1118p are fine structured patterns formed on the surface of the prism plate 1118 and may be formed in a direction facing the LGP 1114 (see Fig.10 ) direction.

[0211] The plurality of prism patterns 1118p may be formed in an inverted triangle shape and include a first surface 1118-1 and a second surface 1118-2. Fig.15 The embodiments of the present disclosure shown are different. Fig.16 In the embodiment of the present disclosure shown, not only the second surface 1118-2 but also the first surface 1118-1 can be formed into a multi-surface structure with different angles. The first surface 1118-1 may include a (1-1) surface 1118c formed to have γ° relative to a horizontal plane and a (1-2) surface 1118d formed to have δ° relative to a horizontal plane. The second surface 1118-2 may include a (2-1) surface 1118a formed to have α° relative to a horizontal plane and a (2-2) surface 1118b formed to have β° relative to a horizontal plane.

[0212] According to an embodiment of the present disclosure, α° may be greater than β°, and γ° may be greater than δ°. However, the embodiments presented in the present disclosure are not limited thereto.

[0213] According to an embodiment of the present disclosure, α° may be the same as β°, and γ° may be the same as δ°. However, the embodiments presented in the present disclosure are not limited thereto.

[0214] Fig.16 The prism plate 1118 shown may use a (2-1)th face 1118a formed at an angle of α° relative to a horizontal plane to diffract or refract light from the LGP 1114 (see FIG. Fig.10 ) outputted from the LGP 1114 (see FIG. 11A ), and uses the (2-2) face 1118b formed at an angle of β° relative to the horizontal plane to refract the refracted light again at an angle greater than α°. In addition, the prism plate 1118 may use the (1-1) face 1118c formed at an angle of γ° relative to the horizontal plane to diffract or refract the light emitted from the LGP 1114 (see FIG. 11B ). Fig.10 ) output light, and uses the (1-2) surface 1118d formed at an angle of δ° relative to the horizontal plane to refract the refracted light again at an angle greater than γ°. Fig.16 The brightness in front of the passenger seat display of the prismatic panel 1118 shown in FIG. 1 can be greater than that of the display including Fig.15 The prism plate 1118 shown in FIG. Fig.15 ) in front of the passenger seat display.

[0215] Fig.17 is a block diagram of a vehicle-based computing system 2000 according to an embodiment of the present disclosure.

[0216] The vehicle-based computing system 2000 indicates a collection of electronic devices for controlling the travel of the vehicle, transmitting and receiving data related to the vehicle, and controlling the operation of auxiliary devices of the vehicle (e.g., opening / closing windows or doors). The electronic device 2010 included in the vehicle-based computing system 2000 may be an in-vehicle device, a device connected to the in-vehicle device in a wired or wireless manner, or a device around the vehicle. Fig.17 The illustrated vehicle-based computing system 2000 may include Figure 4 According to an embodiment of the present disclosure, the electronic device 2010 can be used with Figure 4 The electronic device 1000 shown is the same.

[0217] In some embodiments, the vehicle-based computing system 2000 may be composed of Fig.17 Fewer or more components may be used as shown.

[0218] refer to Fig.17 The vehicle-based computing system 2000 according to an embodiment of the present disclosure may include a telematics control unit (TCU) 2100. The TCU 2100 may be configured to support wireless mobile communications of the vehicle. The TCU 2100 may include Figure 4 At least some components of electronic device 1000 are shown.

[0219] Figure 4 Processor 1400 (see Figure 4 ) may be performed by Fig.17However, the embodiments of the present disclosure are not limited thereto, and the TCU 2100 may include a separate processor configured to control the operation of the TCU 2100. In addition, Figure 4 The electronic device 1000 (see Figure 4 ) may be included inside the TCU 2100, or connected to the TCU 2100 outside the TCU 2100. For example, Figure 4 Memory 1500 (see Figure 4 ) can correspond to Fig.17 2030 RAM, and Figure 4 Storage device 1600 (see Figure 4 ) can correspond to Fig.17 Hard disk drive (HDD) 2040.

[0220] The vehicle-based computing system 2000 may include various modules configured to obtain context information inside or outside the vehicle. For example, the vehicle-based computing system 2000 may include a camera 2200, a microphone 2310, an input interface 2510, etc. In addition, the vehicle-based computing system 2000 may include a communication module configured to receive information from the outside, various sensors configured to obtain external environment information of the vehicle (e.g., RADAR sensor and LIDAR sensor), and various sensors configured to obtain internal context information of the vehicle.

[0221] The camera 2200 is used to input a video signal and can process image frames of still images, videos, etc. obtained by the image sensor. The image frames processed by the camera 2200 can be stored in a memory or sent to the outside through a communication module. According to an embodiment of the present disclosure, two or more cameras 2200 may be provided. For example, the camera 2200 may be implemented in various forms such as a front camera, a rear camera, a left camera, a right camera, an internal camera, and a dashboard camera. In addition, the camera 2200 according to an embodiment of the present disclosure may include an infrared camera.

[0222] The camera 2200 can obtain background information about objects, geographical features, and roads outside the vehicle. The camera 2200 can obtain an environmental image of the vehicle, and the CPU 220 can identify buildings, mountains, other vehicles, pedestrians, lanes, headlights, roadside trees, etc. located within a certain distance from the vehicle from the obtained image.

[0223] according to Fig.17The CPU 2020 of the illustrated embodiment of the present disclosure controls at least some of the operations and functions of the vehicle-based computing system 2000. The CPU 2020 may be connected to a RAM 2030 as a non-permanent storage device and a HDD 2040 as a permanent storage device. The HDD 2040 may be replaced by a flash memory.

[0224] The CPU 2020 may receive user inputs through which the user interacts with the CPU 2020. For example, the vehicle-based computing system 2000 may include at least one of a microphone 2310, an auxiliary input unit 2330, an input interface 2510, a universal serial bus (USB) input unit 2530, an onboard global positioning system (GPS) 2120, or a Bluetooth transceiver 2630. In addition, the vehicle-based computing system 2000 may include an input selector 2800 configured to select an input scheme so that the vehicle-based computing system 2000 receives various inputs from the user. The analog inputs received from the microphone 2310 and the auxiliary input unit 2330 may be converted into digital signals by an analog / digital (A / D) converter 2320 before being transmitted to the CPU 2020. In addition, although not in Fig.17 Although not shown in FIG. 2 , various vehicle components and auxiliary components may communicate with the vehicle-based computing system 2000 using a vehicle network (eg, which may include, but is not limited to, a controller area network (CAN) bus).

[0225] In addition, the vehicle-based computing system 2000 may include a display 2700, a speaker 2410, etc. as an output unit. The speaker 2410 is connected to an amplifier 2420 and may receive an audio output signal from the CPU 2020 through a digital / analog (D / A) converter 2520. In addition, the output of the vehicle-based computing system 2000 may be output through an external device connected by USB or Bluetooth, such as a user navigation device 300 or a navigation device 400 embedded in the vehicle.

[0226] The vehicle-based computing system 2000 may include a display 2700. The display 2700 may display information processed by the vehicle-based computing system 2000. When the display 2700 and the touch pad form a layer structure for configuring a touch screen, the display 2700 may be used not only as an output device but also as an input device. For example, the display 2700 may include a transparent display or a head-up display. In some embodiments, the display 2700 may include a passenger seat display 150.

[0227] The vehicle-based computing system 2000 may receive data from at least one of the vehicle, the user mobile device 200 , the base station 600 , or a server.

[0228] According to an embodiment of the present disclosure, the vehicle-based computing system 2000 can communicate with a user mobile device 200 (e.g., a cellular phone, a smart phone, a personal digital assistant (PDA), or another device supporting wireless remote network access) by using a Bluetooth transceiver 2630. The user mobile device 200 can be, for example, a device carried by a passenger on board. The user mobile device 200 can communicate with a network outside the vehicle to communicate with the base station 600. For example, the base station 600 can be a base station supporting cellular communication or a Wi-Fi access point.

[0229] The pairing of the Bluetooth transceiver 2630 of the vehicle-based computing system 2000 and the user mobile device 200 can be directed by a user input received through the input interface 2510 (such as a button). Therefore, the CPU 2020 can be directed to pair the Bluetooth transceiver 2630 with the Bluetooth transceiver of the user mobile device 200.

[0230] The CPU 2020 may communicate with a network through the user mobile device 200 or directly by using an embedded modem 2610 having an antenna 2620. For example, the modem 2610 may include a USB cellular modem that supports cellular communications.

[0231] According to an embodiment of the present disclosure, the CPU 2020 may provide an operating system including an application programming interface (API) to communicate with the modem application software. The modem application software may access an embedded module or firmware in the Bluetooth transceiver 2630 to perform wireless communications with a Bluetooth transceiver embedded in an external device such as a user mobile device 200. Bluetooth is a scheme included in the Institute of Electrical and Electronics Engineers (IEEE) 802 Personal Area Network (PAN) protocol. The IEEE 802 Local Area Network (LAN) protocol includes Wi-Fi and has a variety of cross-functionality. In addition to Bluetooth or Wi-Fi, free space optical communications (e.g., Infrared Data Association (IrDA)) may be used for in-vehicle wireless communications.

[0232] According to another embodiment of the present disclosure, Fig.17 , the user mobile device 200 may be replaced by a cellular communication device provided to an electronic apparatus 2010 installed in a vehicle.

[0233] Input data entered into the vehicle-based computing system 2000 may be transmitted to the CPU 2020 within the vehicle via the user mobile device 200 and the Bluetooth transceiver 2630. For example, the input data may be stored in the HDD 2040 or another storage medium until the input data is no longer needed.

[0234] The vehicle-based computing system 2000 may include, as additional sources capable of interacting with the vehicle, for example, a user navigation device 300 with a USB connection 320 and / or antenna 310, a navigation device 400 with a USB connection 410 or another connection, an onboard GPS 2120, or a remote navigation system (not shown) with a network connection. USB is one or a family of network protocols. Most communication protocols used in the vehicle-based computing system 2000 can be used to perform electrical or optical communications.

[0235] In addition, CPU 2020 can communicate with various other auxiliary devices 500. Auxiliary devices 500 can access CPU 2020 through wireless connection 510 or wired connection 520. Auxiliary devices 500 may include personal media players, wireless healthcare devices, portable computers, etc., but are not limited thereto.

[0236] In addition, the CPU 2020 can be connected to the vehicle based on the local router 2050 using, for example, a Wi-Fi transceiver 2060. In this case, the CPU 2020 can be connected to a remote network within the coverage of the local router 2050.

[0237] According to an embodiment of the present disclosure, at least some processes may be performed by a computing system that communicates with the vehicle-based computing system 2000. These computing systems may include wireless devices (e.g., mobile phones) or remote computing systems (e.g., servers) connected via wireless devices. These computing systems may be collectively referred to as vehicle associated computing systems (VACS).

[0238] Although the embodiments of the present disclosure have been described with reference to the limited embodiments and drawings of the present disclosure, various changes or modifications may be made by those skilled in the art. For example, even if the described techniques are performed in a different order than the described methods, and / or the described electronic device 1000 components, modules, etc. are coupled or combined in a different form than the described methods, or are replaced by other components or equivalents, appropriate results may be achieved.

Claims

1. A method for controlling a passenger seat display of a vehicle, the method include: Obtaining vehicle operation state information by detecting the operation state of the vehicle driven by the driver; determining an operation mode of the vehicle based on the obtained operation state information, the operation mode comprising a driving mode and a stopping mode; controlling a driving voltage applied to a viewing angle switching element, the viewing angle switching element including a polymer dispersed liquid crystal (PDLC), based on the determined operation mode; as well as adjusting the brightness or color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively, based on the amount of brightness reduction or the amount of color coordinate change that occurs due to application of the driving voltage to the viewing angle switching element, Adjusting the brightness or color coordinates of the passenger seat display also includes: In response to the operation mode of the vehicle being switched, calculating a brightness correction value or a color coordinate correction value for adjusting the brightness or the color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively, based on the brightness reduction amount or the color coordinate change amount; as well as The brightness or color coordinates of the passenger seat display are adjusted by using the calculated brightness correction value or color coordinate correction value, respectively.

2. The method according to claim 1, in, Obtaining the operating state information of the vehicle includes detecting at least one of a vehicle speed, a pressure applied to an accelerator of the vehicle, or an operation of a steering wheel of the vehicle.

3. The method according to claim 2, in, Determining the operation mode of the vehicle includes determining the operation mode of the vehicle as the driving mode when the detected vehicle speed exceeds a predetermined threshold speed, and determining the operation mode of the vehicle as the stopping mode when the detected vehicle speed is equal to or less than the predetermined threshold speed.

4. The method according to claim 1, in, Controlling the driving voltage applied to the viewing angle switching element includes: When the operation mode of the vehicle is determined to be the driving mode, applying a driving voltage to the viewing angle switching element, and When the operation mode of the vehicle is determined to be the stop mode, no driving voltage is applied to the viewing angle switching element.

5. The method according to claim 1, in, Adjusting the brightness or color coordinates of the passenger seat display further includes adjusting the brightness of the passenger seat display to a target brightness value by controlling the magnitude of a driving current applied to a light source of the passenger seat display.

6. The method according to claim 5, in, Information about the amount of brightness reduction is stored in a memory of the vehicle.

7. The method according to claim 1, in, The color coordinates of the passenger seat display are adjusted by adjusting the RGB output amount through a timing control board (T-CON board) or an image board that controls the operation of the passenger seat display.

8. The method according to claim 7, in, Information about the color coordinate changes is stored in a memory of the vehicle.

9. An electronic device for controlling a vehicle passenger seat display, the electronic device include: a passenger seat display arranged on a vehicle dashboard in front of a passenger seat, the passenger seat display comprising a backlight unit BLU, a viewing angle switching element and a liquid crystal display panel, the viewing angle switching element comprising a polymer dispersed liquid crystal (PDLC); a sensor configured to detect an operating state of a vehicle driven by a driver; a power supply configured to supply direct current (DC) power to the passenger seat display and the sensor; at least one processor connected to the power source, the sensors, and the passenger seat display; as well as A memory connected to at least one processor, the memory storing one or more instructions executable by the at least one processor, wherein the at least one processor executes the one or more instructions so that the electronic device: Obtain vehicle operating status information from sensors, determining an operation mode of the vehicle based on the obtained operation state information, the operation mode including a driving mode and a stopping mode, controlling the power supply to apply a driving voltage to the viewing angle switching element based on whether the vehicle is determined to be in motion, and adjusting the brightness or color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively, based on the amount of brightness reduction or the amount of color coordinate change that occurs due to application of the driving voltage to the viewing angle switching element, Wherein, when the one or more instructions are executed by the at least one processor, the electronic device is also caused to: In response to the operation mode of the vehicle being switched, calculating a brightness correction value or a color coordinate correction value for adjusting the brightness or the color coordinates of the passenger seat display to a predetermined target brightness value or a predetermined target color coordinate value, respectively, based on the brightness reduction amount or the color coordinate change amount; and The brightness or color coordinates of the passenger seat display are adjusted by using the calculated brightness correction value or color coordinate correction value, respectively.

10. The electronic device according to claim 9, in, The sensor includes at least one of a speed sensor configured to detect a speed of the vehicle, an accelerator sensor configured to detect a pressure applied to an accelerator of the vehicle, or a steering wheel sensor configured to detect an operation of a steering wheel of the vehicle.

11. The electronic device according to claim 10, in, The at least one processor is further configured to execute one or more instructions to: determining the operation mode of the vehicle as the driving mode when the vehicle speed detected by the speed sensor exceeds a predetermined threshold speed; and When the detected vehicle speed is equal to or less than a predetermined threshold speed, the operation mode of the vehicle is determined to be the stop mode.

12. The electronic device according to claim 9, in, The at least one processor is further configured to execute one or more instructions to: When the operation mode of the vehicle is determined to be the driving mode, the control power supply applies a driving voltage to the viewing angle switching element, and When the operation mode of the vehicle is determined to be the stop mode, the power supply is controlled not to apply the driving voltage to the viewing angle switching element.

13. The electronic device according to claim 9, further comprising a storage device that stores information about an amount of brightness reduction of the passenger seat display between when a driving voltage is applied to the viewing angle switching element and when the driving voltage is not applied to the viewing angle switching element, in, The at least one processor is further configured to execute one or more instructions to: By using the information about the amount of decrease in the brightness value, the brightness of the passenger seat display is adjusted to the target brightness value.

14. The electronic device according to claim 13, in, The at least one processor is further configured to execute one or more instructions to: The control power source varies the magnitude of the driving current applied by the power source to the light source of the BLU, thereby adjusting the brightness of the passenger seat display.

15. The electronic device according to claim 9, further comprising a storage device that stores information about a change in color coordinates of the passenger seat display between when a driving voltage is applied to the viewing angle switching element and when a driving voltage is not applied to the viewing angle switching element.

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