Display device for vehicle

Abstract

The present disclosure relates to a display device for a vehicle. A display device for a vehicle, according to an embodiment of the present disclosure, includes: a display panel including a liquid crystal layer; and a backlight unit for emitting light to the display panel, wherein the backlight unit includes: a first light guide plate; a first light source which emits light to the first light guide plate; a light control film which includes a plurality of absorption patterns consisting of a light-absorbing material, and is disposed between the first light guide plate and the display panel; and a brightness enhancement film disposed between the first light guide plate and the light control film, wherein the brightness enhancement film reflects a portion of incident light and transmits another portion of the incident light.

Description

Vehicle display device

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

[0002] A vehicle is a means of transporting people or cargo using kinetic energy. A representative example of a vehicle is an automobile.

[0003] Systems for the convenience and safety of vehicle users are actively being developed. For example, vehicles can provide features such as active cruise control (ACC), smart parking assist system (SPAS), night vision (NV), head-up display (HUD), around view monitor (AVM), and adaptive headlight system (AHS) for user convenience. For example, vehicles can provide features such as lane departure warning system (LDWS), lane keeping assist system (LKAS), and autonomous emergency braking (AEB) for user safety.

[0004] Meanwhile, vehicles are increasingly equipped with various sensors and electronic devices to ensure the convenience and safety of their users. In particular, vehicles are equipped with one or more display devices capable of displaying driving-related information or content for the user's convenience. A display device is a device capable of displaying images for the user to view. For example, a display device may include a liquid crystal display (LCD) using liquid crystals or an organic light-emitting diode (OLED) display using organic light-emitting diodes (OLED).

[0005] Drivers and passengers in a vehicle can view a variety of content displayed on display devices. For example, the vehicle can display a dashboard screen containing information such as speed and distance traveled on the driver's side display, and an OTT screen containing content on the passenger side display.

[0006] However, content displayed on the vehicle's display devices can cause various problems. For example, if a driver stares at the passenger-side display due to content displayed on the passenger-side display, the driver may momentarily lose focus on the road ahead, potentially leading to a traffic accident. Furthermore, if content belonging to a specific individual is displayed on the vehicle's display device, there is a risk that their privacy may be exposed to others in the vehicle.

[0007] The present disclosure aims to solve the above-mentioned and other problems.

[0008] Another object is to provide a vehicle display device capable of adjusting the viewing angle of the display panel.

[0009] Another object is to provide a vehicle display device capable of variously adjusting a display area with an adjustable viewing angle.

[0010] Another purpose is to provide a vehicle display device that can prevent the privacy of a specific person in a vehicle from being exposed to others in the vehicle.

[0011] Another object is to provide a vehicle display device capable of improving brightness for a display area whose viewing angle is adjustable.

[0012] Another object is to provide a vehicle display device capable of improving the performance of adjusting the viewing angle.

[0013] Another purpose is to provide a vehicle display device capable of improving power consumption and heat dissipation in the display area.

[0014] Another object is to provide a vehicle display device capable of preventing the occurrence of stains on the display area.

[0015] In order to achieve the above object, a vehicle display device according to one embodiment of the present disclosure comprises: a display panel including a liquid crystal layer; and a backlight unit emitting light to the display panel, wherein the backlight unit comprises: a first light guide plate; a first light source emitting light to the first light guide plate; a light control film including a plurality of absorption patterns made of a material that absorbs light and disposed between the first light guide plate and the display panel; and a brightness enhancement film disposed between the first light guide plate and the light control film, wherein the brightness enhancement film can reflect a portion of incident light and transmit the other portion.

[0016] The effects of the vehicle display device according to the present disclosure are described as follows.

[0017] According to at least one embodiment of the present disclosure, a viewing angle for a display panel can be adjusted.

[0018] According to at least one embodiment of the present disclosure, a display area having an adjustable viewing angle can be varied.

[0019] According to at least one embodiment of the present disclosure, the privacy of a specific person in a vehicle can be prevented from being exposed to others in the vehicle.

[0020] According to at least one embodiment of the present disclosure, brightness for a display area whose viewing angle is adjustable can be improved.

[0021] According to at least one embodiment of the present disclosure, the performance of adjusting the viewing angle can be improved.

[0022] According to at least one embodiment of the present disclosure, power consumption and heat generation of a display area can be improved.

[0023] According to at least one embodiment of the present disclosure, the occurrence of stains on a display area can be prevented.

[0024] Further scope of the applicability of the present disclosure will become apparent from the detailed description below. However, since various modifications and variations within the spirit and scope of the present disclosure will become apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only.

[0025] FIG. 1 is a drawing illustrating the exterior of a vehicle according to one embodiment of the present disclosure.

[0026] FIG. 2 is a drawing of a vehicle viewed from various external angles according to one embodiment of the present disclosure.

[0027] FIGS. 3 and 4 are drawings illustrating the interior of a vehicle according to one embodiment of the present disclosure.

[0028] FIG. 5 and FIG. 6 are drawings for reference in the description of an object according to one embodiment of the present disclosure.

[0029] FIG. 7 is a block diagram for reference in the description of a vehicle according to one embodiment of the present disclosure.

[0030] FIG. 8 is a block diagram for reference in explaining the configuration of a vehicle display device according to one embodiment of the present disclosure.

[0031] FIGS. 9 to 20 are drawings for reference in the description of a backlight unit according to one embodiment of the present disclosure.

[0032] FIGS. 21 to 28 are drawings for reference in the description of a backlight unit according to another embodiment of the present disclosure.

[0033] FIGS. 29 to 32b are drawings for reference in the description of a vehicle display device according to one embodiment of the present disclosure.

[0034] Hereinafter, the present disclosure will be described in detail with reference to the drawings. In the drawings, portions irrelevant to the description are omitted to clearly and concisely describe the present disclosure, and the same reference numerals are used for identical or extremely similar portions throughout the specification.

[0035] The suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification and do not impart any particularly significant meaning or role to the components themselves. Therefore, the terms "module" and "part" may be used interchangeably.

[0036] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0037] Additionally, while terms such as "first" and "second" may be used in this specification to describe various elements, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0038] Referring to FIGS. 1 to 7, the vehicle (100) may include wheels that rotate by a power source and a steering input device (510) for controlling the direction of travel of the vehicle (100).

[0039] The vehicle (100) may be an autonomous vehicle.

[0040] The vehicle (100) may be switched between autonomous driving mode and manual driving mode based on user input. For example, the vehicle (100) may be switched from manual mode to autonomous driving mode or from autonomous driving mode to manual mode based on user input received through the user interface device (200).

[0041] The vehicle (100) can be switched between autonomous driving mode and manual driving mode based on driving situation information. The driving situation information may include at least one of object information outside the vehicle, navigation information, and vehicle status information. For example, the vehicle (100) can be switched from manual mode to autonomous driving mode or from autonomous driving mode to manual mode based on driving situation information generated by the object detection device (300). For example, the vehicle (100) can be switched from manual mode to autonomous driving mode or from autonomous driving mode to manual mode based on driving situation information received through the communication device (400).

[0042] The vehicle (100) can be switched from manual mode to autonomous driving mode or from autonomous driving mode to manual mode based on information, data, and signals provided from an external device.

[0043] When the vehicle (100) is operated in autonomous driving mode, the autonomous vehicle (100) may be operated based on the driving system (700). For example, the autonomous vehicle (100) may be operated based on information, data, or signals generated from the driving system (710), the exit system (740), and the parking system (750).

[0044] When the vehicle (100) is driven in manual mode, the autonomous vehicle (100) can receive user input for driving through the driving control device (500). Based on the user input received through the driving control device (500), the vehicle (100) can be driven.

[0045] The overall length refers to the length from the front to the rear of the vehicle (100), the overall width refers to the width of the vehicle (100), and the overall height refers to the length from the bottom of the wheel to the roof. In the following description, the overall length direction (L) may refer to the direction that serves as a reference for measuring the overall length of the vehicle (100), the overall width direction (W) may refer to the direction that serves as a reference for measuring the overall width of the vehicle (100), and the overall height direction (H) may refer to the direction that serves as a reference for measuring the overall height of the vehicle (100).

[0046] As illustrated in FIG. 7, the vehicle (100) may include a user interface device (200), an object detection device (300), a communication device (400), a driving operation device (500), a vehicle driving device (600), a driving system (700), a navigation system (770), a sensing unit (120), an interface unit (130), a memory (140), a control unit (170), and / or a power supply unit (190). Depending on the embodiment, the vehicle (100) may include other components in addition to the components described herein, or may not include some of the components described.

[0047] The user interface device (200) is a device for communication between a vehicle (100) and a user. The user interface device (200) can receive user input and provide information generated in the vehicle (100) to the user. The vehicle (100) can implement a UI (User Interface) or UX (User Experience) through the user interface device (200).

[0048] The user interface device (200) may include an input unit (210), an internal camera (220), a biometric detection unit (230), an output unit (250), and / or a processor (270).

[0049] Depending on the embodiment, the user interface device (200) may include additional components other than the described components, or may not include some of the described components.

[0050] The input unit (210) is for receiving information from a user, and data collected from the input unit (210) can be analyzed by a processor (270) and processed into a user's control command.

[0051] The input unit (210) may be placed inside the vehicle. For example, the input unit (210) may be placed in an area of ​​a steering wheel, an area of ​​an instrument panel, an area of ​​a seat, an area of ​​each pillar, an area of ​​a door, an area of ​​a center console, an area of ​​a head lining, an area of ​​a sun visor, an area of ​​a windshield, or an area of ​​a window.

[0052] The input unit (210) may include a voice input unit (211), a gesture input unit (212), a touch input unit (213), and / or a mechanical input unit (214).

[0053] The voice input unit (211) can convert a user's voice input into an electrical signal. The converted electrical signal can be provided to a processor (270) or a control unit (170). The voice input unit (211) can include one or more microphones.

[0054] The gesture input unit (212) can convert a user's gesture input into an electrical signal. The converted electrical signal can be provided to the processor (270) or the control unit (170). The gesture input unit (212) can include at least one of an infrared sensor and an image sensor for detecting a user's gesture input. According to an embodiment, the gesture input unit (212) can detect a user's three-dimensional gesture input. To this end, the gesture input unit (212) can include a light output unit that outputs a plurality of infrared lights or a plurality of image sensors. The gesture input unit (212) can detect a user's three-dimensional gesture input through a TOF (Time of Flight) method, a structured light method, or a disparity method.

[0055] The touch input unit (213) can convert a user's touch input into an electrical signal. The converted electrical signal can be provided to the processor (270) or the control unit (170). The touch input unit (213) can include a touch sensor for detecting the user's touch input. According to an embodiment, the touch input unit (213) can be formed as an integral part with the display unit (251), thereby implementing a touch screen. Such a touch screen can provide both an input interface and an output interface between the vehicle (100) and the user.

[0056] The mechanical input unit (214) may include at least one of a button, a dome switch, a jog wheel, and a jog switch. An electrical signal generated by the mechanical input unit (214) may be provided to a processor (270) or a control unit (170). The mechanical input unit (214) may be placed on a steering wheel, a center fascia, a center console, a cockpit module, a door, etc.

[0057] The internal camera (220) can capture images of the vehicle interior. The processor (270) can detect the user's status based on the images of the vehicle interior. The processor (270) can obtain information about the user's gaze from the images of the vehicle interior. The processor (270) can detect the user's gestures from the images of the vehicle interior.

[0058] The biometric detection unit (230) can obtain the user's biometric information. The biometric detection unit (230) can include a sensor capable of obtaining the user's biometric information. The biometric detection unit (230) can obtain the user's fingerprint information, heartbeat information, etc. using the sensor. The biometric information can be used for user authentication.

[0059] The output unit (250) is for generating output related to visual, auditory, or tactile sensations. The output unit (250) may include at least one of a display unit (251), an audio output unit (252), and a haptic output unit (253).

[0060] The display unit (251) can display graphic objects corresponding to various pieces of information. The display unit (251) can include at least one of a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display, a 3D display, and an e-ink display. The display unit (251) can be referred to as a vehicle display device (251).

[0061] The display unit (251) can implement a touch screen by forming a mutual layer structure with the touch input unit (213) or forming it as an integral part.

[0062] The display unit (251) may be implemented as a HUD (Head Up Display). When the display unit (251) is implemented as a HUD, the display unit (251) may be equipped with a projection module to output information through an image projected onto a windshield or window.

[0063] The display unit (251) may include a transparent display. The transparent display may be attached to a windshield or a window. The transparent display may have a predetermined transparency and display a predetermined screen. In order to have transparency, the transparent display may include at least one of a transparent TFEL (Thin Film Electroluminescent), a transparent OLED (Organic Light-Emitting Diode), a transparent LCD (Liquid Crystal Display), a transparent display, and a transparent LED (Light Emitting Diode) display. The transparency of the transparent display may be adjusted.

[0064] Meanwhile, the user interface device (200) may include a plurality of display units (251a to 251g). The display unit (251) may be arranged in one area of ​​a steering wheel, one area of ​​an instrument panel (251a, 251b, 251e), one area of ​​a seat (251d), one area of ​​each pillar (251f), one area of ​​a door (251g), one area of ​​a center console, one area of ​​a head lining, one area of ​​a sun visor, or may be implemented in one area of ​​a windshield (251c), one area of ​​a window (251h).

[0065] The audio output unit (252) converts an electric signal provided from the processor (270) or the control unit (170) into an audio signal and outputs the converted signal. To this end, the audio output unit (252) may include one or more speakers.

[0066] The haptic output unit (253) generates a tactile output. For example, the haptic output unit (253) can operate by vibrating a steering wheel, a seat belt, a seat (110FL, 110FR, 110RL, 110RR), etc., so that the user can perceive the output.

[0067] The processor (270) can control the overall operation of each unit of the user interface device (200).

[0068] Depending on the embodiment, the user interface device (200) may include a plurality of processors (270) or may not include a processor (270). If the user interface device (200) does not include a processor (270), the user interface device (200) may be operated under the control of a processor or control unit (170) of another device within the vehicle (100).

[0069] Meanwhile, the user interface device (200) may be referred to as a vehicle display device. The user interface device (200) may be operated under the control of the control unit (170).

[0070] The object detection device (300) is a device for detecting an object located outside a vehicle (100). The object detection device (300) can generate object information based on sensing data. The object information can include information on the presence or absence of an object, location information of the object, distance information between the vehicle (100) and the object, and relative speed information between the vehicle (100) and the object. The object can be various objects related to the operation of the vehicle (100).

[0071] Referring to FIGS. 5 and 6, objects (O) may include a lane (OB10), another vehicle (OB11), a pedestrian (OB12), a two-wheeled vehicle (OB13), a traffic signal (OB14, OB15), a light, a road, a structure, a speed bump, a terrain, an animal, etc.

[0072] A lane (OB10) can be a driving lane, a lane adjacent to a driving lane, or a lane for opposing vehicles. A lane (OB10) can be a concept that includes left and right lines forming a lane. A lane can also be a concept that includes an intersection.

[0073] Another vehicle (OB11) may be a vehicle driving around the vehicle (100). The other vehicle may be a vehicle located within a predetermined distance from the vehicle (100). For example, the other vehicle (OB11) may be a vehicle preceding or following the vehicle (100).

[0074] A pedestrian (OB12) may be a person located around a vehicle (100). A pedestrian (OB12) may be a person located within a predetermined distance from a vehicle (100). For example, a pedestrian (OB12) may be a person located on a sidewalk or roadway.

[0075] A two-wheeled vehicle (OB13) may refer to a vehicle that is positioned around a vehicle (100) and moves using two wheels. The two-wheeled vehicle (OB13) may be a vehicle with two wheels that is positioned within a predetermined distance from the vehicle (100). For example, the two-wheeled vehicle (OB13) may be a motorcycle or bicycle positioned on a sidewalk or roadway.

[0076] Traffic signals may include traffic lights (OB15), traffic signs (OB14), and patterns or text painted on the road surface.

[0077] The light may be generated from a lamp installed in another vehicle. The light may be generated from a streetlight. The light may be sunlight.

[0078] A road may include slopes such as road surfaces, curves, uphill and downhill slopes, etc.

[0079] Structures may be objects located along a roadway and fixed to the ground. For example, structures may include streetlights, street trees, buildings, utility poles, traffic lights, bridges, curbs, and walls.

[0080] Landforms may include mountains, hills, etc.

[0081] Meanwhile, objects can be classified into moving objects and stationary objects. For example, moving objects may include concepts such as moving vehicles and moving pedestrians. For example, stationary objects may include concepts such as traffic signals, roads, structures, stationary vehicles, and stationary pedestrians.

[0082] The object detection device (300) may include a camera (310), a radar (320), a lidar (330), an ultrasonic sensor (340), an infrared sensor (350), and / or a processor (370).

[0083] Depending on the embodiment, the object detection device (300) may include additional components other than the described components, or may not include some of the described components.

[0084] The camera (310) may be positioned at an appropriate location outside the vehicle to capture images of the vehicle's exterior. The camera (310) may be a mono camera, a stereo camera (310a), an AVM (Around View Monitoring) camera (310b), or a 360-degree camera.

[0085] The camera (310) can obtain position information of an object, distance information to an object, or relative speed information to an object by using various image processing algorithms.

[0086] For example, the camera (310) can obtain distance information and relative speed information from an object based on changes in the object size over time from the acquired image.

[0087] For example, the camera (310) can obtain distance information and relative speed information with respect to an object through a pin hole model, road profiling, etc.

[0088] For example, the camera (310) can obtain distance information and relative velocity information with respect to an object based on disparity information in a stereo image obtained from a stereo camera (310a).

[0089] For example, the camera (310) may be positioned inside the vehicle, close to the front windshield, to capture an image of the front of the vehicle. Alternatively, the camera (310) may be positioned around the front bumper or radiator grill.

[0090] For example, the camera (310) may be positioned inside the vehicle, close to the rear glass, to capture images of the rear of the vehicle. Alternatively, the camera (310) may be positioned around the rear bumper, trunk, or tailgate.

[0091] For example, the camera (310) may be positioned close to at least one of the side windows inside the vehicle to obtain an image of the side of the vehicle. Alternatively, the camera (310) may be positioned around a side mirror, fender, or door.

[0092] The camera (310) can provide the acquired image to the processor (370).

[0093] The radar (320) may include an electromagnetic wave transmitter and receiver. The radar (320) may be implemented in a pulse radar or continuous wave radar manner based on the principle of radio wave emission. Among continuous wave radar methods, the radar (320) may be implemented in an FMCW (Frequency Modulated Continuous Wave) manner or an FSK (Frequency Shift Keying) manner depending on the signal waveform.

[0094] The radar (320) can detect an object using electromagnetic waves, based on a TOF (Time of Flight) method or a phase-shift method, and can detect the location of the detected object, the distance to the detected object, and the relative speed.

[0095] The radar (320) can be placed at an appropriate location outside the vehicle to detect objects located in front, rear, or to the side of the vehicle.

[0096] The lidar (330) may include a laser transmitter and receiver. The lidar (330) may be implemented using a TOF (Time of Flight) method or a phase-shift method.

[0097] The lidar (330) can be implemented as a driven or non-driven type.

[0098] When implemented as a drive type, the lidar (330) is rotated by a motor and can detect objects around the vehicle (100).

[0099] When implemented in a non-driven manner, the lidar (330) can detect an object located within a predetermined range relative to the vehicle (100) through optical steering. The vehicle (100) can include a plurality of non-driven lidars (330).

[0100] Lidar (330) can detect an object based on a time-of-flight (TOF) method or a phase-shift method using laser light as a parameter, and can detect the position of the detected object, the distance to the detected object, and the relative speed.

[0101] The lidar (330) can be placed at an appropriate location outside the vehicle to detect objects located in front, behind, or to the side of the vehicle.

[0102] The ultrasonic sensor (340) may include an ultrasonic transmitter and a receiver. The ultrasonic sensor (340) may detect an object based on ultrasonic waves, and may detect the location of the detected object, the distance to the detected object, and the relative speed.

[0103] The ultrasonic sensor (340) can be placed at an appropriate location outside the vehicle to detect objects located in front, rear, or to the side of the vehicle.

[0104] The infrared sensor (350) may include an infrared transmitter and a receiver. The infrared sensor (340) may detect an object based on infrared light, and may detect the location of the detected object, the distance to the detected object, and the relative speed.

[0105] The infrared sensor (350) can be placed at an appropriate location outside the vehicle to detect objects located in front, rear, or to the side of the vehicle.

[0106] The processor (370) can control the overall operation of each unit of the object detection device (300).

[0107] The processor (370) can detect or classify an object by comparing data sensed by a camera (310), radar (320), lidar (330), ultrasonic sensor (340), and infrared sensor (350) with previously stored data.

[0108] The processor (370) can detect and track an object based on the acquired image. The processor (370) can perform operations such as calculating the distance to the object and calculating the relative speed with the object through an image processing algorithm.

[0109] For example, the processor (370) can obtain distance information and relative speed information from an object based on changes in the object size over time from the acquired image.

[0110] For example, the processor (370) can obtain distance information and relative speed information with respect to an object through a pin hole model, road profiling, etc.

[0111] For example, the processor (370) can obtain distance information and relative velocity information with respect to an object based on disparity information from a stereo image obtained from a stereo camera (310a).

[0112] The processor (370) can detect and track an object based on the reflected electromagnetic waves that are returned when the transmitted electromagnetic waves are reflected by the object. The processor (370) can perform operations such as calculating the distance to the object and calculating the relative speed with the object based on the electromagnetic waves.

[0113] The processor (370) can detect and track an object based on the reflected laser light that is reflected back by the transmitted laser beam from the object. The processor (370) can perform operations such as calculating the distance to the object and calculating the relative speed with the object based on the laser light.

[0114] The processor (370) can detect and track an object based on the reflected ultrasonic waves that are returned when the transmitted ultrasonic waves are reflected off the object. The processor (370) can perform operations such as calculating the distance to the object and calculating the relative speed with the object based on the ultrasonic waves.

[0115] The processor (370) can detect and track an object based on the reflected infrared light that is reflected back by the transmitted infrared light from the object. The processor (370) can perform operations such as calculating the distance to the object and calculating the relative speed with the object based on the infrared light.

[0116] Depending on the embodiment, the object detection device (300) may include multiple processors (370) or may not include a processor (370). For example, each of the camera (310), radar (320), lidar (330), ultrasonic sensor (340), and infrared sensor (350) may individually include a processor.

[0117] If the object detection device (300) does not include a processor (370), the object detection device (300) can be operated under the control of the processor or control unit (170) of the device in the vehicle (100).

[0118] The object detection device (300) can be operated under the control of the control unit (170).

[0119] The communication device (400) is a device for communicating with an external device. Here, the external device may be another vehicle, a mobile terminal, or a server.

[0120] The communication device (400) may include at least one of a transmitting antenna, a receiving antenna, an RF (Radio Frequency) circuit capable of implementing various communication protocols, and an RF element to perform communication.

[0121] The communication device (400) may include a short-range communication unit (410), a location information unit (420), a V2X communication unit (430), an optical communication unit (440), a broadcast transmission / reception unit (450), and / or a processor (470).

[0122] Depending on the embodiment, the communication device (400) may include additional components other than the described components, or may not include some of the described components.

[0123] The short-range communication unit (410) is a unit for short-range communication. The short-range communication unit (410) can support short-range communication using at least one of Bluetooth, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra-Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies.

[0124] The short-range communication unit (410) can form a short-range wireless communication network (Wireless Area Network) to perform short-range communication between the vehicle (100) and at least one external device.

[0125] The location information unit (420) is a unit for obtaining location information of a vehicle (100). For example, the location information unit (420) may include a GPS (Global Positioning System) module or a DGPS (Differential Global Positioning System) module.

[0126] The V2X communication unit (430) is a unit for performing wireless communication with a server (V2I: Vehicle to Infrastructure), another vehicle (V2V: Vehicle to Vehicle), or a pedestrian (V2P: Vehicle to Pedestrian). The V2X communication unit (430) may include an RF circuit capable of implementing protocols for communication with infrastructure (V2I), communication between vehicles (V2V), and communication with pedestrians (V2P).

[0127] The optical communication unit (440) is a unit for communicating with an external device via light. The optical communication unit (440) may include an optical transmission unit that converts an electrical signal into an optical signal and transmits it to the outside, and an optical reception unit that converts a received optical signal into an electrical signal.

[0128] According to an embodiment, the light transmitting unit may be formed to be integrated with a lamp included in the vehicle (100).

[0129] The broadcast transmitter / receiver (450) is a unit for receiving broadcast signals from an external broadcast management server via a broadcast channel, or transmitting broadcast signals to the broadcast management server. The broadcast channels may include satellite channels and terrestrial channels. The broadcast signals may include TV broadcast signals, radio broadcast signals, and data broadcast signals.

[0130] The communication device (400) may further include an ITS (Intelligent Transport Systems) communication unit (460).

[0131] The ITS communication unit (460) can exchange information, data, or signals with the traffic system. The ITS communication unit (460) can provide the acquired information and data to the traffic system. The ITS communication unit (460) can receive information, data, or signals from the traffic system. For example, the ITS communication unit (460) can receive road traffic information from the traffic system and provide it to the control unit (170). For example, the ITS communication unit (460) can receive a control signal from the traffic system and provide it to the control unit (170) or a processor installed within the vehicle (100).

[0132] The processor (470) can control the overall operation of each unit of the communication device (400).

[0133] Depending on the embodiment, the communication device (400) may include a plurality of processors (470) or may not include a processor (470).

[0134] If the communication device (400) does not include a processor (470), the communication device (400) may be operated under the control of a processor or control unit (170) of another device in the vehicle (100).

[0135] Meanwhile, the communication device (400) may implement a vehicle display device together with the user interface device (200). In this case, the vehicle display device may be referred to as a telematics device or an AVN (Audio Video Navigation) device.

[0136] The communication device (400) can be operated under the control of the control unit (170).

[0137] The driving control device (500) is a device that receives user input for driving.

[0138] When in manual mode, the vehicle (100) can be driven based on signals provided by the driving control device (500).

[0139] The driving control device (500) may include a steering input device (510), an acceleration input device (530), and / or a brake input device (570).

[0140] The steering input device (510) can receive input for the direction of travel of the vehicle (100) from the user. The steering input device (510) is preferably formed in the form of a wheel so that steering input can be provided by rotation. Depending on the embodiment, the steering input device may be formed in the form of a touch screen, a touch pad, or a button.

[0141] The acceleration input device (530) can receive an input from a user for accelerating the vehicle (100). The brake input device (570) can receive an input from a user for decelerating the vehicle (100). The acceleration input device (530) and the brake input device (570) are preferably formed in the form of a pedal. Depending on the embodiment, the acceleration input device or the brake input device may also be formed in the form of a touch screen, a touch pad, or a button.

[0142] The driving operation device (500) can be operated under the control of the control unit (170).

[0143] The vehicle driving device (600) is a device that electrically controls the driving of various devices in the vehicle (100).

[0144] The vehicle driving device (600) may include a power train driving unit (610), a chassis driving unit (620), a door / window driving unit (630), a safety device driving unit (640), a lamp driving unit (650), and / or an air conditioning driving unit (660).

[0145] Depending on the embodiment, the vehicle drive device (600) may include additional components other than the described components, or may not include some of the described components.

[0146] Meanwhile, the vehicle driving device (600) may include a processor. Each unit of the vehicle driving device (600) may individually include a processor.

[0147] The power train drive unit (610) can control the operation of the power train device.

[0148] The power train drive unit (610) may include a power source drive unit (611) and / or a transmission drive unit (612).

[0149] The power source driving unit (611) can perform control over the power source of the vehicle (100).

[0150] For example, if a fossil fuel-based engine is the power source, the power source drive unit (611) can perform electronic control of the engine. This allows the engine's output torque, etc. to be controlled. The power source drive unit (611) can adjust the engine output torque according to the control of the control unit (170).

[0151] For example, if an electric energy-based motor is the power source, the power source driving unit (611) can perform control over the motor. The power source driving unit (611) can adjust the rotation speed, torque, etc. of the motor according to the control of the control unit (170).

[0152] The transmission drive unit (612) can perform control over the transmission.

[0153] The transmission drive unit (612) can adjust the state of the transmission. The transmission drive unit (612) can adjust the state of the transmission to forward (D), reverse (R), neutral (N), or parking (P).

[0154] Meanwhile, when the engine is the power source, the transmission drive unit (612) can adjust the gear engagement state in the forward (D) state.

[0155] The chassis drive unit (620) can control the operation of the chassis device.

[0156] The chassis drive unit (620) may include a steering drive unit (621), a brake drive unit (622), and / or a suspension drive unit (623).

[0157] The steering drive unit (621) can perform electronic control of the steering apparatus within the vehicle (100). The steering drive unit (621) can change the direction of travel of the vehicle.

[0158] The brake drive unit (622) can perform electronic control of the brake apparatus within the vehicle (100). For example, the speed of the vehicle (100) can be reduced by controlling the operation of the brakes placed on the wheels.

[0159] Meanwhile, the brake driving unit (622) can individually control each of the plurality of brakes. The brake driving unit (622) can control the braking force applied to the plurality of wheels differently.

[0160] The suspension drive unit (623) can perform electronic control of the suspension apparatus within the vehicle (100). For example, when there is a curve in the road surface, the suspension drive unit (623) can control the suspension apparatus to reduce vibration of the vehicle (100).

[0161] Meanwhile, the suspension drive unit (623) can individually control each of the plurality of suspensions.

[0162] The door / window actuator (630) can perform electronic control of a door apparatus or window apparatus in a vehicle (100).

[0163] The door / window driving unit (630) may include a door driving unit (631) and / or a window driving unit (632).

[0164] The door driving unit (631) can control the door device. The door driving unit (631) can control the opening and closing of a plurality of doors included in the vehicle (100). The door driving unit (631) can control the opening or closing of a trunk or tail gate. The door driving unit (631) can control the opening or closing of a sunroof.

[0165] The window driving unit (632) can perform electronic control of a window apparatus. It can control the opening or closing of a plurality of windows included in a vehicle (100).

[0166] The safety device driving unit (640) can perform electronic control of various safety devices in the vehicle (100).

[0167] The safety device drive unit (640) may include an airbag drive unit (641), a seat belt drive unit (642), and / or a pedestrian protection device drive unit (643).

[0168] The airbag driving unit (641) can perform electronic control of the airbag apparatus within the vehicle (100). For example, the airbag driving unit (641) can control the airbag to deploy when a danger is detected.

[0169] The seat belt drive unit (642) can perform electronic control of the seat belt apparatus within the vehicle (100). For example, the seat belt drive unit (642) can control the passenger to be secured to the seat (110FL, 110FR, 110RL, 110RR) using the seat belt when a danger is detected.

[0170] The pedestrian protection device drive unit (643) can perform electronic control of the hood lift and pedestrian airbag. For example, the pedestrian protection device drive unit (643) can control the hood lift up and the pedestrian airbag to deploy when a collision with a pedestrian is detected.

[0171] The lamp driving unit (650) can perform electronic control of various lamp apparatuses within the vehicle (100).

[0172] The air conditioning drive unit (660) can perform electronic control of the air conditioning device (air conditioner) within the vehicle (100). For example, the air conditioning drive unit (660) can control the air conditioning device to operate and supply cool air to the vehicle when the temperature inside the vehicle is high.

[0173] The vehicle driving device (600) may include a processor. Each unit of the vehicle driving device (600) may individually include a processor.

[0174] The vehicle driving device (600) can be operated under the control of the control unit (170).

[0175] The driving system (700) is a system that controls various operations of the vehicle (100). The driving system (700) can be operated in autonomous driving mode.

[0176] The driving system (700) may include a driving system (710), an exit system (740) and / or a parking system (750).

[0177] Depending on the embodiment, the driving system (700) may include additional components other than the described components, or may not include some of the described components.

[0178] Meanwhile, the driving system (700) may include a processor. Each unit of the driving system (700) may individually include a processor.

[0179] Meanwhile, depending on the embodiment, if the driving system (700) is implemented in software, it may be a sub-concept of the control unit (170).

[0180] Meanwhile, according to an embodiment, the driving system (700) may be a concept including at least one of a user interface device (270), an object detection device (300), a communication device (400), a driving operation device (500), a vehicle driving device (600), a navigation system (770), a sensing unit (120), and a control unit (170).

[0181] The driving system (710) can drive the vehicle (100).

[0182] The driving system (710) receives navigation information from the navigation system (770) and provides a control signal to the vehicle driving device (600) to drive the vehicle (100).

[0183] The driving system (710) receives object information from the object detection device (300) and provides a control signal to the vehicle driving device (600) to enable driving of the vehicle (100).

[0184] The driving system (710) can receive a signal from an external device through a communication device (400) and provide a control signal to the vehicle driving device (600) to drive the vehicle (100).

[0185] The driving system (710) may be a system concept that performs driving of a vehicle (100) by including at least one of a user interface device (270), an object detection device (300), a communication device (400), a driving operation device (500), a vehicle driving device (600), a navigation system (770), a sensing unit (120), and a control unit (170).

[0186] Such a driving system (710) may be referred to as a vehicle driving control device.

[0187] The exit system (740) can perform exit of a vehicle (100).

[0188] The exit system (740) receives navigation information from the navigation system (770) and provides a control signal to the vehicle driving device (600) to perform exit of the vehicle (100).

[0189] The exit system (740) receives object information from the object detection device (300) and provides a control signal to the vehicle driving device (600) to perform exit of the vehicle (100).

[0190] The exit system (740) can receive a signal from an external device through a communication device (400) and provide a control signal to the vehicle driving device (600) to perform exit of the vehicle (100).

[0191] The exit system (740) may be a system concept that performs exit of a vehicle (100) by including at least one of a user interface device (270), an object detection device (300), a communication device (400), a driving operation device (500), a vehicle driving device (600), a navigation system (770), a sensing unit (120), and a control unit (170).

[0192] This exit system (740) may be referred to as a vehicle exit control device.

[0193] The parking system (750) can perform parking of a vehicle (100).

[0194] The parking system (750) can receive navigation information from the navigation system (770) and provide a control signal to the vehicle driving device (600) to perform parking of the vehicle (100).

[0195] The parking system (750) receives object information from the object detection device (300) and provides a control signal to the vehicle driving device (600) to perform parking of the vehicle (100).

[0196] The parking system (750) can receive a signal from an external device through a communication device (400) and provide a control signal to the vehicle driving device (600) to perform parking of the vehicle (100).

[0197] A parking system (750) may be a system concept that performs parking of a vehicle (100) by including at least one of a user interface device (270), an object detection device (300), a communication device (400), a driving operation device (500), a vehicle driving device (600), a navigation system (770), a sensing unit (120), and a control unit (170).

[0198] Such a parking system (750) may be referred to as a vehicle parking control device.

[0199] A navigation system (770) can provide navigation information. The navigation information can include at least one of map information, set destination information, route information based on the set destination, information on various objects along the route, lane information, and current vehicle location information.

[0200] The navigation system (770) may include memory and a processor. The memory may store navigation information. The processor may control the operation of the navigation system (770).

[0201] According to an embodiment, the navigation system (770) may receive information from an external device via the communication device (400) and update previously stored information.

[0202] Depending on the embodiment, the navigation system (770) may be classified as a subcomponent of the user interface device (200).

[0203] The sensing unit (120) can sense the status of the vehicle. The sensing unit (120) can include an IMU (inertial navigation unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an inclination sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor by steering wheel rotation, a vehicle internal temperature sensor, a vehicle internal humidity sensor, an ultrasonic sensor, an illuminance sensor, an accelerator pedal position sensor, a brake pedal position sensor, and the like.

[0204] Meanwhile, the IMU (inertial navigation unit) sensor may include one or more of an acceleration sensor, a gyro sensor, and a magnetic sensor.

[0205] The sensing unit (120) can obtain sensing signals for vehicle attitude information, vehicle motion information, vehicle yaw information, vehicle roll information, vehicle pitch information, vehicle collision information, vehicle direction information, vehicle location information (GPS information), vehicle angle information, vehicle speed information, vehicle acceleration information, vehicle inclination information, vehicle forward / backward information, battery information, fuel information, tire information, vehicle lamp information, vehicle internal temperature information, vehicle internal humidity information, steering wheel rotation angle, vehicle external illumination, pressure applied to an accelerator pedal, pressure applied to a brake pedal, etc.

[0206] The sensing unit (120) may further include, in addition, an accelerator pedal sensor, a pressure sensor, an engine speed sensor, an air flow sensor (AFS), an intake temperature sensor (ATS), a water temperature sensor (WTS), a throttle position sensor (TPS), a TDC sensor, a crank angle sensor (CAS), etc.

[0207] The sensing unit (120) can generate vehicle status information based on sensing data. The vehicle status information may be information generated based on data detected by various sensors installed inside the vehicle.

[0208] For example, vehicle status information may include vehicle attitude information, vehicle speed information, vehicle inclination information, vehicle weight information, vehicle direction information, vehicle battery information, vehicle fuel information, vehicle tire pressure information, vehicle steering information, vehicle interior temperature information, vehicle interior humidity information, pedal position information, and vehicle engine temperature information.

[0209] The interface unit (130) can serve as a conduit for various types of external devices connected to the vehicle (100). For example, the interface unit (130) may be equipped with a port capable of connecting to a mobile terminal, and may be connected to the mobile terminal through the port. In this case, the interface unit (130) can exchange data with the mobile terminal.

[0210] Meanwhile, the interface unit (130) can serve as a conduit for supplying electrical energy to a connected mobile terminal. When the mobile terminal is electrically connected to the interface unit (130), the interface unit (130) can provide the mobile terminal with electrical energy supplied from the power supply unit (190) under the control of the control unit (170).

[0211] The memory (140) is electrically connected to the control unit (170). The memory (140) can store basic data for the unit, control data for controlling the operation of the unit, input / output data, etc. The memory (140) can be various storage devices such as ROM, RAM, EPROM, flash drive, hard drive, etc. in terms of hardware. The memory (140) can store various data for the overall operation of the vehicle (100), such as programs for processing or controlling the control unit (170).

[0212] Depending on the embodiment, the memory (140) may be formed integrally with the control unit (170) or implemented as a sub-component of the control unit (170).

[0213] The control unit (170) can control the overall operation of each unit within the vehicle (100). The control unit (170) can be referred to as an ECU (Electronic Control Unit).

[0214] The power supply unit (190) can supply power required for the operation of each component under the control of the control unit (170). In particular, the power supply unit (190) can receive power from a battery or the like inside the vehicle.

[0215] One or more processors and control units (170) included in the vehicle (100) may be implemented using at least one of application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, and other electrical units for performing functions.

[0216] FIG. 8 is a block diagram for reference in explaining the configuration of a vehicle display device according to one embodiment of the present disclosure.

[0217] Referring to FIG. 8, the vehicle display device (251) can output a predetermined image based on an image signal. For example, the vehicle display device (251) can output graphic objects representing instrument panel information of the vehicle (100), various image contents, etc. based on an image signal.

[0218] A vehicle display device (251) may include a display control unit (805), a display panel (810), a panel driver (830), and / or a backlight unit (850).

[0219] The display control unit (805) can receive a video signal from the control unit (170). The display control unit (805) can process the video signal. The display control unit (805) can be equipped with a decoder, a scaler, a formatter, etc. to process the video signal. The display control unit (805) can be included in the control unit (170). The display control unit (805) can be included in the processor (270). The display control unit (805) can also be provided separately from the control unit (170) and / or the processor (270).

[0220] According to one embodiment, the display control unit (805) may include a demultiplexer that demultiplexes an input stream. The demultiplexer may separate the input stream into video, audio, and / or data signals. The decoder may decode the demultiplexed video signal. The scaler may perform scaling so that the resolution of the decoded video signal can be output to the display panel (810).

[0221] According to one embodiment, the display control unit (805) may include a frame rate converter (FRC) that converts the frame rate of an input image. Meanwhile, the frame rate converter may output the image as is without a separate frame rate conversion.

[0222] The formatter can change the format of an input video signal into a video signal for display on a display panel (810) and output it.

[0223] The demultiplexer, decoder, scaler, frame rate converter and / or formatter may not be provided within the display control unit (805), but may be provided separately or provided separately as one module.

[0224] The display panel (810) may include a plurality of pixels (P). The plurality of pixels (P) may be connected to a plurality of gate lines (GL) and data lines (DL) that are arranged to cross each other in a matrix form. A plurality of thin film transistors (TFTs) may be arranged at the intersections of the plurality of gate lines (GL) and the plurality of data lines (DL). A plurality of pixels (P) may be formed at the intersections of the plurality of data lines (DL) and the plurality of gate lines (GL). Each of the plurality of pixels (P) may be connected to the data lines and the gate lines.

[0225] If the vehicle display device (251) is a liquid crystal display (LCD), the plurality of pixels may include a liquid crystal layer. If the vehicle display device (251) is an OLED display, the plurality of pixels may include organic light emitting diodes (OLEDs).

[0226] The display panel (810) may include a first substrate on which a driving element such as a thin film transistor (TFT) and a pixel electrode connected thereto are formed, a second substrate having a common electrode, and / or a liquid crystal layer formed between the first substrate and the second substrate. The arrangement of the liquid crystals in the display panel (810) may be of the in-plane switching (IPS) type.

[0227] The panel driver (830) can drive the display panel (810) based on a control signal and / or data signal transmitted from the display control unit (805). The panel driver (830) can include a timing control unit (832), a gate driver (834), and / or a data driver (836).

[0228] The timing control unit (832) can receive control signals, image signals, etc. from the display control unit (805). For example, the timing control unit (832) can receive RGB signals, vertical synchronization signals (Vsync), etc. from the display control unit (805). The timing control unit (832) can control the gate driver (834) and / or the data driver (836) in response to the control signals. The timing control unit (832) can rearrange the image signals according to the specifications of the data driver (836) and transmit them to the data driver (836).

[0229] The gate driver (834) and the data driver (836) can supply scanning signals and image signals to the display panel (810) through the gate line (GL) and the data line (DL) under the control of the timing control unit (832).

[0230] Meanwhile, the data driver (836) may include a plurality of source driver ICs (Source Driver Integrated Circuits) (not shown) corresponding to a plurality of data lines (DL).

[0231] The backlight unit (850) can supply light to the display panel (810). To this end, the backlight unit (850) can include at least one light source (852) that outputs light, a scan driving unit (854) that controls scanning driving of the light source (852), and / or a light source driving unit (856) that turns the light source (852) on / off.

[0232] A vehicle display device (251) can display a predetermined image using light emitted from a backlight unit (850) in a state where the light transmittance of the liquid crystal layer is controlled by an electric field formed between the pixel electrode and the common electrode of the display panel (810).

[0233] The power supply unit (190) can supply a common electrode voltage (Vcom) to the display panel (810). The power supply unit (190) can supply a gamma voltage to the data driver (836). The power supply unit (190) can supply driving power to drive the light source (852) to the backlight unit (850).

[0234] The vehicle display device (251) can be driven by a local dimming method. The backlight unit (850) can be divided into a plurality of blocks. The backlight unit (850) can be driven by each divided block. For example, when the backlight unit (850) is driven by a local dimming method, the display panel (810) can have a plurality of divided areas corresponding to each block of the backlight unit (850). At this time, the intensity of light emitted from each block of the backlight unit (850) can be adjusted according to the luminance level of each divided area of ​​the display panel (810), for example, a peak value of a gray level or a color coordinate signal. That is, the vehicle display device (251) can reduce the intensity of light emitted from a block corresponding to a dark portion of an image among the blocks of the backlight unit (850) and increase the intensity of light emitted from a block corresponding to a bright portion of an image. Through this, the contrast ratio and clarity of the image output through the vehicle display device (251) can be improved.

[0235] The vehicle display device (251) can set a dimming value for each block based on a block-by-block representative value for each block of the backlight unit (850). The display control unit (805) can determine a block-by-block representative value for each block of the backlight unit (850) based on a video signal.

[0236] According to one embodiment, the block-specific representative value may include a luminance level of an image corresponding to each block of the backlight unit (850). The display control unit (805) may determine a luminance level for the entire area and / or a portion of the image based on the image signal. For example, the display control unit (805) may determine an average luminance level (Average Picture Level, APL) of each of a plurality of divided areas corresponding to each block of the backlight unit (850), an average luminance level of the entire area of ​​the image, etc.

[0237] The display control unit (805) can calculate a dimming value for each block of the backlight unit (850) based on the brightness level for the entire area and / or a portion of the image. For example, the display control unit (805) can calculate a dimming value for each block of the backlight unit (850) based on the brightness level of each of a plurality of divided areas, the brightness level of a peripheral area, the brightness level of the entire area, etc. At this time, the display control unit (805) can calculate the dimming value so that, among the blocks of the backlight unit (850), the intensity of light emitted from a block in an area with a low brightness level decreases, and the intensity of light emitted from a block in an area with a high brightness level increases.

[0238] The display control unit (805) can output the calculated dimming value to the backlight unit (850). The display control unit (805) can output a signal including the calculated dimming value to the backlight unit (850). The backlight unit (850) can adjust the intensity of light emitted from the light source (852) based on the dimming value received from the display control unit (805).

[0239] The light source (852) can be turned on or off according to a driving signal received from the light source driving unit (856). The light source driving unit (856) can generate a driving signal based on a dimming value output from the display control unit (805). The driving signal can be a pulse width modulation (PWM) signal. For example, the intensity of light emitted from the light source (852) can be adjusted according to the amplitude of the driving signal received from the light source driving unit (856). For example, the time for which light is emitted from the light source (852) can be adjusted according to the pulse width of the driving signal received from the light source driving unit (856).

[0240] FIGS. 9 to 20 are drawings for reference in the description of a backlight unit according to one embodiment of the present disclosure.

[0241] Hereinafter, directions are defined based on the rectangular coordinate system. In the rectangular coordinate system, the x-axis direction can be defined as the left-right direction. At this time, the direction toward +x with respect to the origin can mean the right direction, and the direction toward -x can mean the left direction. In addition, the y-axis direction can be defined as the front-back direction. At this time, the direction toward +y with respect to the origin can mean the front direction, and the direction toward -y can mean the rear direction. In addition, the z-axis direction can be defined as the up-down direction. At this time, the direction toward +z with respect to the origin can mean the upward direction, and the direction toward -z can mean the downward direction.

[0242] Meanwhile, the present disclosure describes an embodiment in which the driver's seat is positioned on the left and the passenger seat on the right, based on the longitudinal direction, but is not limited thereto. For example, the present disclosure may be applied to an embodiment in which the driver's seat is positioned on the right and the passenger seat on the left, or an embodiment in which the driver's seat is positioned in the center and the passenger seats are positioned on either side.

[0243] Referring to FIG. 9, a first backlight unit (850a) according to one embodiment of the present disclosure may include a first light guide panel (LGP) (910), a first light source unit (920), a light control film (LCF) (930), a second light guide panel (940), a second light source unit (950), a diffusion sheet (960), a first prism sheet (971), a second prism sheet (972), and / or a brightness enhancement film (980).

[0244] The first light source unit (920) can emit light toward the first light guide plate (910). In the present disclosure, the first light source unit (920) is described as being positioned below the first light guide plate (910) and emitting light in an upward direction, but is not limited thereto.

[0245] The first light source unit (920) may include a plurality of first light sources (921). The plurality of first light sources (921) may be light emitting diodes (LEDs). The plurality of first light sources (921) may be implemented as an array arranged in the left-right direction.

[0246] The first light guide plate (910) can function as a surface light source. The first light guide plate (910) can reflect light emitted from the first light source unit (920). The light reflected from the first light guide plate (910) can be directed in the forward direction. The light emitted from the first light guide plate (910) can be incident on the light control film (930).

[0247] The first light guide plate (910) may include a first reflector (not shown) that reflects light emitted from the first light source unit (920). The first reflector may be positioned on the rear side of the first light guide plate (910). The first reflector may be formed of a material with high reflectivity. For example, the first reflector may be formed of silver (Ag), aluminum (Al), or the like.

[0248] The light control film (930) may be positioned between the first light guide plate (910) and the second light guide plate (940). The light control film (930) may emit at least a portion of the light emitted from the first light guide plate (910) in the forward direction. The path of the light emitted from the light control film (930) may correspond to the forward and backward directions. The light emitted from the light control film (930) may be incident on the second light guide plate (940).

[0249] The second light source unit (950) can emit light to the second light guide plate (940). The second light source unit (950) can be arranged on the right side of the second light guide plate (940). The second light source unit (950) can include a plurality of second light sources (951). The plurality of second light sources (951) can be light emitting diodes (LEDs). The plurality of second light sources (951) can be implemented as an array arranged in the vertical direction.

[0250] The second light guide plate (940) can function as a surface light source. The second light guide plate (940) can emit at least a portion of the light emitted from the light control film (930) in the forward direction. The path of the light emitted from the light control film (930) can correspond to the forward-backward direction. The path of the light emitted from the light control film (930) and passing through the second light guide plate (940) can correspond to the forward-backward direction.

[0251] The second light guide plate (940) can reflect light emitted from the second light source unit (950). The second light guide plate (940) can include a second reflector (not shown) that reflects light emitted from the second light source unit (950). The second reflector can be placed on the rear side of the second light guide plate (940).

[0252] A plurality of reflective patterns may be arranged on the second reflector. At this time, light incident on and reflected by the reflective patterns may be directed toward the driver's seat. That is, light emitted from the second light source (950) and reflected by the second light guide plate (940) may be emitted toward the driver's seat. For example, the reflective patterns may be formed to protrude and / or recess into a predetermined shape so that the reflected light may be directed toward the driver's seat.

[0253] A diffusion sheet (960) can be placed between the first light guide plate (910) and the light control film (930). The diffusion sheet (960) can scatter light emitted from the first light guide plate (910) and evenly distribute it across one surface.

[0254] The prism sheets (971, 972) can refract and / or focus light emitted from the diffusion sheet (960). A prism pattern can be formed on the prism sheets (971, 972). For example, a plurality of prism patterns arranged adjacent to each other can be formed on the prism sheets (971, 972) to form a plurality of band shapes. The prism patterns can have a triangular prism shape.

[0255] The brightness enhancement film (980) can reflect some of the incident light and transmit the other part. The brightness enhancement film (980) can be implemented as a polarizing film. The brightness enhancement film (980) can be a DBEF (Dual Brightness Enhancement Film). For example, the brightness enhancement film (980) can transmit the polarization corresponding to a preset direction among the incident light in the forward direction and reflect the polarization of the light in a direction different from the preset direction in the rear direction. At this time, the light reflected in the rear direction by the brightness enhancement film (980) can be re-incident to the brightness enhancement film (980) and recycled through re-reflection by components located in the rear direction of the brightness enhancement film (980). The brightness of the display area can be enhanced through this light recycling. Here, the brightness of the display area can mean the brightness when the display panel (810) is viewed from the front.

[0256] Referring to FIG. 10, the light control film (930) may include a plurality of absorption patterns (931) made of a material that absorbs light. For example, the plurality of patterns (931) may be made of a black pigment, a black dye, or a black resin. Each of the plurality of absorption patterns (931) may be formed to extend in the vertical direction. Each of the plurality of absorption patterns (931) may be formed to have a predetermined height in the front-back direction. The plurality of absorption patterns (931) may be implemented as an array arranged in the left-right direction.

[0257] The light control film (930) may further include a transmission pattern (932) made of a material that transmits light and is arranged between a plurality of absorption patterns (931). For example, the transmission pattern (932) may be made of a transparent resin or the like.

[0258] As shown in drawing reference numeral 1001, an absorption pattern (931) according to one embodiment of the present disclosure may be implemented so that the cross-sectional shape in the front-back direction has a rectangular shape. When the cross-sectional shape of the absorption pattern (931) is rectangular, the widths of both ends of the absorption pattern (931) may both be the first width (w1).

[0259] Meanwhile, as shown in the drawing reference numeral 1002, the absorption pattern (931) according to one embodiment of the present disclosure may be implemented so that the cross-section in the front-back direction has a trapezoidal shape. The cross-section of the absorption pattern (931) in the front-back direction may have an isosceles trapezoid. When the cross-section of the absorption pattern (931) has a trapezoidal shape, the width of the front end of the absorption pattern (931) may have a second width (w2), and the width of the rear end may have a third width (w3) that is larger than the second width (w2). The width of the absorption pattern (931) may increase from the front end to the rear end. The height (h2) of the absorption pattern (931) when the cross-section is trapezoidal may be smaller than the height (h1) of the absorption pattern (931) when the cross-section is rectangular.

[0260] Meanwhile, at least a portion of the light incident on the absorption pattern (931) may be reflected by the absorption pattern (931). At this time, when the cross-section of the absorption pattern (931) is trapezoidal, the incident angle of the light incident on the absorption pattern (931) may be larger than when the cross-section is rectangular. Therefore, when the cross-section of the absorption pattern (931) is trapezoidal, the light totally reflected by the absorption pattern (931) may increase compared to when the cross-section is rectangular. When the light totally reflected by the absorption pattern (931) increases, the brightness of the display area may be improved as the light transmitting through the light control film (930) increases.

[0261] Referring to FIGS. 11A and 11B, the second light guide plate (940) may include a second reflector (941) that reflects light emitted from the second light source (950). A plurality of first reflector patterns (942) may be arranged on the second reflector (941). The first reflector patterns (942) may be formed to protrude in a predetermined shape so that the reflected light is directed toward the driver's seat. For example, a cross-section of the first reflector pattern (942) that is perpendicular to the y-axis direction may have a rectangular shape. In this case, the first reflector pattern (942) may have a square pyramid shape.

[0262] When a member having a shape corresponding to the first reflection pattern (942) is engraved on the mold, a recessed pattern having a shape corresponding to the first reflection pattern (942) can be formed on the mold. At this time, a second light guide plate (940) can be formed through injection molding using the mold.

[0263] As shown in drawings 1101 and 1102, the greater the number of first reflection patterns (942) formed on the second light guide plate (940), the more light emitted from the second light source (950) and reflected from the second light guide plate (940) toward the driver's seat can be increased.

[0264] Meanwhile, as the number of first reflective patterns (942) formed on the second light guide plate (940) increases, the spacing between the first reflective patterns (942) may decrease. At this time, as the spacing between the first reflective patterns (942) decreases, the amount of light emitted from the light control film (930) and transmitted through the second light guide plate (940) in the forward direction may decrease. As the amount of light transmitted through the second light guide plate (940) in the forward direction decreases, the brightness of the display area may decrease. Therefore, the number of first reflective patterns (942) formed on the second light guide plate (940) may correspond to a target brightness value of the display area. For example, if the number of first reflection patterns (942) formed on the second light guide plate (940) is reduced by 10% from 5 million to 4.5 million, the brightness for the display area can increase by 3%.

[0265] Referring to FIGS. 12 and 13, light can be emitted from a first light source (921) included in a first light source unit (920) and a second light source (951) included in a second light source unit (950).

[0266] Light emitted from the first light source (921) may be reflected from the first light guide plate (910) and directed to the light control film (930). Some of the light incident on the light control film (930) may be absorbed by the absorption pattern (931). Other light incident on the light control film (930) may be emitted from the light control film (930) in a direction parallel to the vertical direction. The light emitted from the light control film (930) may transmit through the second light guide plate (940) and propagate in the forward direction. Therefore, a user positioned facing the front of the display panel (810) may view an image based on the light emitted from the first light source (921).

[0267] Meanwhile, light emitted from the second light source (951) may be reflected from the second light guide plate (940). At this time, the light reflected from the first reflection pattern (942) of the second light guide plate (940) may be emitted toward the driver's seat located on the left. Accordingly, a user located in the driver's seat may view an image based on the light emitted from the second light source (951).

[0268] Referring to FIGS. 14 and 15, light may be emitted from a first light source (921) included in a first light source unit (920). The light emitted from the first light source (921) may travel in the forward direction through the first light guide plate (910), the light control film (930), and the second light guide plate (940). Accordingly, a user positioned facing the front of the display panel (810) may view an image based on the light emitted from the first light source (921).

[0269] Meanwhile, light may not be emitted from the second light source (951) included in the second light source unit (950). If light is not emitted from the second light source (951), the light emitted from the display panel (810) may not be directed toward the driver's seat. Therefore, a user positioned in the driver's seat may not be able to view the image.

[0270] Referring to Fig. 16, light may be emitted from a second light source (951) included in a second light source unit (950). The light emitted from the second light source (951) may be reflected from the second light guide plate (940) and emitted toward the driver's seat located on the left. Accordingly, a user located in the driver's seat may view an image based on the light emitted from the second light source (951).

[0271] Meanwhile, light may not be emitted from the first light source (921) included in the first light source unit (920). If light is not emitted from the first light source (921), the light may not be directed in the forward direction from the front of the display panel (810). Therefore, a user positioned facing the front of the display panel (810) may not be able to view the image.

[0272] Referring to FIG. 17, the brightness of the image viewed by the user may vary depending on the angle at which the display panel (810) is viewed.

[0273] When light is emitted from both the first light source (921) and the second light source (951) (1710), the user can view an image having a brightness higher than a predetermined level from an angle of 0° when viewing the display panel (810) from the front to an angle of -40° when viewing from the driver's seat.

[0274] Meanwhile, when light is emitted only from the first light source (921) (1720), the user can view an image with a brightness higher than a predetermined level at an angle of 0° when looking at the display panel (810) from the front, whereas the user may not be able to view the image at an angle of -40° when looking from the driver's seat.

[0275] Meanwhile, when light is emitted only from the second light source (951) (1730), the user can view an image with a brightness higher than a predetermined level at an angle of -40° when viewing the display panel (810) from the driver's seat, whereas it may be extremely difficult for the user to view the image at an angle of 0° when viewing the display panel (810) from the front.

[0276] Referring to Fig. 18, when the brightness enhancement film (980) is implemented as a polarizing film, polarized light corresponding to a preset direction can be emitted. At this time, when the brightness enhancement film (980) is placed on the front side of the light control film (930), light traveling along the front side direction by the light control film (930) can be diffused by light recycling by the brightness enhancement film (980). In addition, the greater the haze of the brightness enhancement film (980), the greater the degree to which light is diffused.

[0277] As shown in drawing symbol 1801, when a brightness enhancement film (980) is placed between a light control film (930) and a second light guide plate (940), light diffused by the brightness enhancement film (980) can pass through the second light guide plate (940) and be incident on the display panel (810).

[0278] Additionally, even when a brightness enhancement film (980) is placed between the second light guide plate (940) and the display panel (810), as shown in drawing symbol 1802, light diffused by the brightness enhancement film (980) can be incident on the display panel (810).

[0279] That is, when the brightness enhancement film (980) is placed on the front side of the light control film (930) and the light that was traveling in the front direction by the light control film (930) is diffused by the brightness enhancement film (980), the performance of controlling the brightness and viewing angle for the display area may be reduced.

[0280] The performance of adjusting the viewing angle can be calculated based on the result of dividing the luminance value corresponding to the case where the display panel (810) is viewed from a certain angle by the luminance value corresponding to the case where the display panel (810) is viewed from the front. In the present disclosure, the performance of adjusting the viewing angle is described as the value expressed as a percentage of the result of dividing the first luminance value corresponding to an angle of -40° when the display panel (810) is viewed from the driver's seat by the second luminance value corresponding to an angle of 0° when the display panel (810) is viewed from the front.

[0281] Meanwhile, referring to FIG. 19A, when the brightness enhancement film (980) is positioned on the rear side of the light control film (930), light directed toward the light control film (930) can increase due to light recycling by the brightness enhancement film (980). For example, the brightness enhancement film (980) can transmit polarized light (1910) corresponding to a preset direction among the incident light in the forward direction and reflect polarized light (1920) in a direction different from the preset direction in the rear direction. At this time, the light reflected in the rear direction by the brightness enhancement film (980) can be re-incident to the brightness enhancement film (980) and recycled through re-reflection by components positioned in the rear direction of the brightness enhancement film (980).

[0282] As the brightness enhancement film (980) is disposed on the rear side of the light control film (930), light (1930) emitted from the brightness enhancement film (980) and incident on the light control film (930) can be emitted from the light control film (930) toward the front side. Therefore, when the brightness enhancement film (980) is disposed on the rear side of the light control film (930), the performance of controlling brightness and viewing angle for the display area can be improved.

[0283] Viewing Angle Luminance Case 01.72% 100% Case 11.70% 83.4% Case 21.64% 118% Case 31.56% 124%

[0284] Table 1 above is a table showing the performance of adjusting the viewing angle and the brightness for the display area for various cases related to the placement of the brightness enhancement film (980).

[0285] In Table 1, with respect to the brightness of the display area in various cases related to the placement of the brightness enhancement film (980), the brightness value of each case is divided by the brightness value in the case where the brightness enhancement film (980) is not placed (Case 0), and the result is expressed as a percentage to provide a relative explanation.

[0286] The performance of adjusting the viewing angle can be detected as 1.72% when the brightness enhancement film (980) is not placed (Case 0), 1.70% when the brightness enhancement film (980) is placed on the front side of the second light guide plate (940) (Case 1), 1.64% when the brightness enhancement film (980) is placed between the light control film (930) and the second light guide plate (940) (Case 2), and 1.56% when the brightness enhancement film (980) is placed on the rear side of the light control film (930) (Case 3).

[0287] The luminance for the display area can be detected as 83.4% when the luminance enhancement film (980) is placed on the front side of the second light guide plate (940) (Case 1), 118% when the luminance enhancement film (980) is placed between the light control film (930) and the second light guide plate (940) (Case 2), and 124% when the luminance enhancement film (980) is placed on the rear side of the light control film (930) (Case 3).

[0288] That is, when the brightness enhancement film (980) is placed on the rear side of the light control film (930), the performance of controlling brightness and viewing angle for the display area can be improved compared to when the brightness enhancement film (980) is not placed or when the brightness enhancement film (980) is placed on the front side of the light control film (930).

[0289] According to one embodiment of the present disclosure, the haze of the brightness enhancement film (980) may be limited to a predetermined value so as to minimize degradation of the performance of adjusting the viewing angle. For example, the haze of the brightness enhancement film (980) may be 45% or less.

[0290] Meanwhile, in the case where the second light guide plate (940) is formed through injection molding using a mold, polycarbonate may be used as the material of the second light guide plate (940) to ensure reliability, etc. In this case, due to differences in density caused by the mold during injection molding, differences in the degree of cooling depending on the location, etc., a birefringence phenomenon in which the polarization refractive index of the second light guide plate (940) is partially different may occur.

[0291] When polarized light emitted from a brightness enhancement film (980) partially transmits through a second light guide plate (940) having a different polarization refractive index, the characteristics of the polarized light transmitting through the second light guide plate (940) may change. In this case, when the polarized light with changed characteristics transmits through the display panel (810), staining may occur in the display area.

[0292] Considering the occurrence of spots in such display areas, according to one embodiment of the present disclosure, a brightness enhancement film (980) may be placed between the first prism sheet (971) and the second prism sheet (972).

[0293] Referring to FIG. 19b, when a brightness enhancement film (980) is placed between a first prism sheet (971) and a second prism sheet (972), the brightness enhancement film (980) can transmit polarized light (1950) corresponding to a preset direction among incident light in the forward direction and reflect polarized light (1940) in a direction different from the preset direction in the rearward direction. At this time, the light reflected in the rearward direction by the brightness enhancement film (980) can be re-incident to the brightness enhancement film (980) and recycled through re-reflection by the first prism sheet (971) or the like positioned in the rearward direction of the brightness enhancement film (980).

[0294] Light (1960) emitted from the brightness enhancement film (980) may be incident on the second prism sheet (972). At this time, since the second prism sheet (972) refracts and / or focuses the light (1960) emitted from the brightness enhancement film (980), the characteristics of the light (1970) emitted from the second prism sheet (972) may be the same as the characteristics when the brightness enhancement film (980) is not disposed. Therefore, when the brightness enhancement film (980) is disposed between the first prism sheet (971) and the second prism sheet (972), the occurrence of stains on the display area due to the brightness enhancement film (980) being disposed on the front side of the first prism sheet (971) and the second prism sheet (972) may be minimized.

[0295] Meanwhile, when the second light guide plate (940) is formed through injection molding using a mold, different stresses may be generated in different parts of the second light guide plate (940). In particular, the stress at the corners of the second light guide plate (940) may have a greater impact on the occurrence of stains in the display area than other parts. Therefore, the size of the mold used to form the second light guide plate (940) may be larger than the size of the second light guide plate (940).

[0296] Referring to drawing reference numeral 2001 of FIG. 20, the size of the first mold (2010) may be larger than the size of the second light guide plate (940).

[0297] The first mold (2010) may include a free area (2011) corresponding to a first length (L1) in the vertical direction, compared to the second light guide plate (940). At this time, since the corner portion (2013) of the first mold (2010) where internal stress occurs overlaps with the second light guide plate (940), internal stress that affects the occurrence of stains in the display area may also occur in the corner portion (2015) of the second light guide plate (940) that overlaps with the corner portion (2013) of the first mold (2010).

[0298] Meanwhile, referring to the drawing reference numeral 2001 of FIG. 20, the second mold (2020) may include a free area (2021) corresponding to a second length (L2) in the vertical direction, compared to the second light guide plate (940). At this time, since the corner portion (2023) of the second mold (2020) where internal stress occurs does not overlap with the second light guide plate (940), the occurrence of internal stress in the corner portion of the second light guide plate (940), which affects the occurrence of stains in the display area, can be minimized. According to one embodiment, the second length, which is the length of the free area in the vertical direction included in the second mold (2020), may be 15 mm or more.

[0299] FIGS. 21 to 28 are drawings that are referenced in the description of a backlight unit according to another embodiment of the present disclosure. Detailed descriptions of content that overlaps with the content described in FIGS. 9 to 20 will be omitted.

[0300] Referring to FIGS. 21 and 22, a second backlight unit (850b) according to another embodiment of the present disclosure may include a first light guide plate (910), a first light source unit (920), a light control film (930), a third light guide plate (940'), a third light source unit (950'), a diffusion sheet (960), a first prism sheet (971), a second prism sheet (972), and / or a brightness enhancement film (980).

[0301] The third light source unit (950') can emit light toward the third light guide plate (940'). In the present disclosure, the third light source unit (950') is described as being arranged above the third light guide plate (940') and emitting light downward, but is not limited thereto. For example, the third light source unit (950') can be arranged below the third light guide plate (940') and emitting light upward.

[0302] The third light source unit (950') may include a plurality of third light sources (951'). The plurality of third light sources (951') may be light-emitting diodes (LEDs). The plurality of third light sources (951') may be implemented as an array arranged in the left-right direction.

[0303] The third light guide plate (940') can function as a surface light source. The third light guide plate (940') can emit at least a portion of the light emitted from the light control film (930) in the forward direction. The path of the light emitted from the light control film (930) can correspond to the forward-backward direction. The path of the light emitted from the light control film (930) and passing through the third light guide plate (940') can correspond to the forward-backward direction.

[0304] The third light guide plate (940') can reflect light emitted from the third light source unit (950'). The third light guide plate (940') can include a third reflector (941') that reflects light emitted from the third light source unit (950'). The third reflector (941') can be placed on the rear side of the third light guide plate (940').

[0305] A plurality of second reflection patterns (942') may be arranged on the third reflection plate (941'). At this time, light incident on and reflected by the second reflection patterns (942') may be directed toward the driver's seat. That is, light emitted from the third light source unit (950') and reflected by the third light guide plate (940') may be emitted toward the driver's seat. The second reflection pattern (942') may be formed by protruding and / or recessing in a predetermined shape so that the reflected light may be directed toward the driver's seat. For example, a cross-section of the second reflection pattern (942') perpendicular to the y-axis direction may have a pentagonal shape. At this time, the second reflection pattern (942') may have a pentagonal pyramidal shape.

[0306] Referring to FIG. 23, light can be emitted from a first light source (921) included in a first light source unit (920) and a third light source (951') included in a third light source unit (950').

[0307] The light emitted from the first light source (921) can travel forward through the first light guide plate (910), the light control film (930), and the third light guide plate (940'). Accordingly, a user positioned facing the front of the display panel (810) can view an image based on the light emitted from the first light source (921).

[0308] Meanwhile, light emitted from the third light source (951') may be reflected from the third light guide plate (940') and emitted toward the driver's seat located on the left. Accordingly, a user positioned in the driver's seat may view an image based on the light emitted from the third light source (951').

[0309] Referring to Fig. 24, light may be emitted from a first light source (921) included in a first light source unit (920). The light emitted from the first light source (921) may travel in the forward direction through the first light guide plate (910), the light control film (930), and the second light guide plate (940). Accordingly, a user positioned facing the front of the display panel (810) may view an image based on the light emitted from the first light source (921).

[0310] Meanwhile, light may not be emitted from the third light source (951') included in the third light source unit (950'). If light is not emitted from the third light source (951'), the light emitted from the display panel (810) may not be directed toward the driver's seat. Accordingly, a user positioned in the driver's seat may not be able to view the video.

[0311] Referring to Fig. 25, light may be emitted from a third light source (951') included in a third light source unit (950'). The light emitted from the third light source (951') may be reflected from the third light guide plate (940') and emitted toward the driver's seat located on the left. Accordingly, a user located in the driver's seat may view an image based on the light emitted from the third light source (951').

[0312] Meanwhile, light may not be emitted from the first light source (921) included in the first light source unit (920). If light is not emitted from the first light source (921), the light may not be directed in the forward direction from the front of the display panel (810). Therefore, a user positioned facing the front of the display panel (810) may not be able to view the image.

[0313] Referring to FIG. 26, light may be emitted from a left portion of the first light source (921) included in the first light source unit (920) and the third light source (951') included in the third light source unit (950').

[0314] The light emitted from the first light source (921) can travel forward through the first light guide plate (910), the light control film (930), and the third light guide plate (940'). Accordingly, a user positioned facing the front of the display panel (810) can view an image over the entire area of ​​the screen based on the light emitted from the first light source (921).

[0315] Meanwhile, light emitted from a portion of the left side of the third light source (951') may be reflected from the third light guide plate (940') and emitted toward the driver's seat located on the left side. Accordingly, a user located in the driver's seat may view an image limited to a portion of the left side of the screen based on the light emitted from a portion of the left side of the third light source (951').

[0316] Referring to FIG. 27, light may be emitted from a first light source (921) included in a first light source unit (920) and a portion on the right side of a third light source (951') included in a third light source unit (950').

[0317] The light emitted from the first light source (921) can travel forward through the first light guide plate (910), the light control film (930), and the third light guide plate (940'). Accordingly, a user positioned facing the front of the display panel (810) can view an image over the entire area of ​​the screen based on the light emitted from the first light source (921).

[0318] Meanwhile, light emitted from a portion on the right side of the third light source (951') may be reflected from the third light guide plate (940') and emitted toward the driver's seat located on the left side. Accordingly, a user positioned in the driver's seat may view an image limited to a portion on the right side of the screen based on the light emitted from a portion on the right side of the third light source (951').

[0319] Referring to FIG. 28, light can be emitted from a right portion of the first light source (921) included in the first light source unit (920) and a left portion of the third light source (951') included in the third light source unit (950').

[0320] The light emitted from the right portion of the first light source (921) can travel forward through the first light guide plate (910), the light control film (930), and the third light guide plate (940'). Accordingly, a user positioned facing the front of the display panel (810) can view an image only in a right portion of the screen based on the light emitted from the first light source (921).

[0321] Meanwhile, light emitted from a portion of the left side of the third light source (951') may be reflected from the third light guide plate (940') and emitted toward the driver's seat located on the left side. Accordingly, a user located in the driver's seat may view an image limited to a portion of the left side of the screen based on the light emitted from a portion of the left side of the third light source (951').

[0322] Accordingly, the viewing angle for one area of ​​the display panel (810) on which the backlight unit (850a, 850b) according to various embodiments of the present disclosure is arranged can be adjusted.

[0323] Referring to FIGS. 29 and 30, a display panel (810) corresponding to an instrument panel may be placed in front of the driver (10) and / or the user (20) (hereinafter, passenger) positioned in the passenger seat. The driver (10) may gaze at the entire area of ​​the display panel (810).

[0324] The display panel (810) may include a first area (811) corresponding to the driver (10), a second area (813) corresponding to the driver (10) and a passenger (20), and / or a third area (815) corresponding to the passenger (20). In the present disclosure, the display panel (810) is described as consisting of three areas (811, 813, 815) as an example, but is not limited thereto.

[0325] The vehicle display device (251) can output an image through at least one area of ​​the display panel (810). For example, the vehicle display device (251) can output an instrument panel screen including driving speed, driving distance, etc. through the first area (811). For example, the vehicle display device (251) can output a control screen for controlling devices within the vehicle (100), such as a lamp device and an air conditioning device, a screen including navigation information, etc., through the second area (813). For example, the vehicle display device (251) can output video content, such as a movie or a game, through the third area (815).

[0326] The backlight unit (850a, 850b) according to various embodiments of the present disclosure may be arranged to correspond to at least some of the plurality of areas of the display panel (810).

[0327] Referring to FIG. 31A, the backlight units (850a, 850b) according to various embodiments of the present disclosure may be arranged to correspond to the third region (815) of the display panel (810). The viewing angle of at least a portion of the third region (815) may be adjusted depending on whether light is emitted from the light sources included in the backlight units (850a, 850b). For example, the vehicle display device (251) may adjust the viewing angle of the entire third region (815) when a predetermined mode is set. In this case, the restricted region may correspond to the entire third region (815).

[0328] Meanwhile, referring to FIG. 31b, when the second backlight unit (850b) is arranged to correspond to the third region (815) of the display panel (810), the viewing angle can be adjusted for at least a portion of the third region (815). For example, when light is emitted from some of the third light sources (951') and no light is emitted from the remaining portion, the viewing angle for the driver's seat can be adjusted for a portion of the third region (815) corresponding to the remaining portion of the third light sources (951') from which no light is emitted.

[0329] Referring to FIG. 32a, the backlight units (850a, 850b) according to various embodiments of the present disclosure may be arranged to correspond to the second region (813) and the third region (815) of the display panel (810). The viewing angles of at least a portion of the second region (813) and the third region (815) may be adjusted depending on whether light is emitted from the light sources included in the backlight units (850a, 850b). For example, the vehicle display device (251) may adjust the viewing angle of the third region (815) among the second region (813) and the third region (815) when a predetermined mode is set.

[0330] Meanwhile, referring to FIG. 32b, when the second backlight unit (850b) is arranged to correspond to the second region (814) and the third region (815) of the display panel (810), the viewing angle can be adjusted for at least a portion of the second region (813) and the third region (815). For example, when light is not emitted from the third light source (951') corresponding to the second region (813) and light is emitted from the third light source (951') corresponding to the third region (815), the viewing angle for the driver's seat in the second region (813) can be adjusted.

[0331] Referring to FIGS. 1 to 32b, a vehicle display device (251) according to one embodiment of the present disclosure includes a display panel including a liquid crystal layer; and a backlight unit emitting light to the display panel, wherein the backlight unit includes: a first light guide plate; a first light source emitting light to the first light guide plate; a light control film including a plurality of absorption patterns made of a material that absorbs light and disposed between the first light guide plate and the display panel; and a brightness enhancement film disposed between the first light guide plate and the light control film, wherein the brightness enhancement film can reflect a portion of incident light and transmit the other portion.

[0332] Additionally, according to one embodiment of the present disclosure, the brightness enhancement film may be a DBEF (Dual Brightness Enhancement Film).

[0333] Additionally, according to one embodiment of the present disclosure, at least one prism sheet may be further included, which is disposed between the first light guide plate and the brightness enhancement film.

[0334] In addition, according to one embodiment of the present disclosure, the device may further include a first prism sheet disposed between the first light guide plate and the brightness enhancing film; and a second prism sheet disposed between the brightness enhancing film and the light control film.

[0335] In addition, according to one embodiment of the present disclosure, the display device may further include a second light guide plate disposed between the light control film and the display panel; and a second light source emitting light to the second light guide plate.

[0336] Additionally, according to one embodiment of the present disclosure, the second light guide plate may be formed of polycarbonate.

[0337] In addition, according to one embodiment of the present disclosure, the second light guide plate includes a plurality of reflective patterns formed in a predetermined shape so that light emitted and reflected from the second light source is directed toward the driver's seat, and the shape of the cross-section of the reflective pattern may be a pentagon.

[0338] In addition, according to one embodiment of the present disclosure, each of the plurality of absorption patterns may be formed to extend along a second direction perpendicular to the first direction while having a predetermined height with respect to the first direction in which the display panel and the backlight unit are stacked, and the plurality of absorption patterns may be arranged along a third direction perpendicular to the first direction and the second direction.

[0339] Additionally, according to one embodiment of the present disclosure, the shape of the cross-section of the absorption pattern in the first direction may be trapezoidal.

[0340] Additionally, according to one embodiment of the present disclosure, the haze of the brightness enhancement film may be 45% or less.

[0341] The attached drawings are only intended to facilitate understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present disclosure.

[0342] Meanwhile, the operating method of the vehicle display device of the present disclosure can be implemented as processor-readable code on a processor-readable recording medium. The processor-readable recording medium includes all types of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and also includes those implemented in the form of a carrier wave, such as transmission via the Internet. In addition, the processor-readable recording medium can be distributed across network-connected computer systems, so that the processor-readable code can be stored and executed in a distributed manner.

[0343] In addition, although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. A display panel including a liquid crystal layer; and It includes a backlight unit that emits light to the display panel, The above backlight unit, 1st light guide plate; A first light source emitting light to the first light guide plate; A light control film comprising a plurality of absorption patterns made of a material that absorbs light and disposed between the first light guide plate and the display panel; and Including a brightness enhancement film disposed between the first light guide plate and the light control film, A vehicle display device, characterized in that the above brightness enhancement film reflects some of the incident light and transmits the other part.

2. In paragraph 1, A vehicle display device characterized in that the above brightness enhancement film is a DBEF (Dual Brightness Enhancement Film).

3. In paragraph 1, A vehicle display device characterized in that it further comprises at least one prism sheet disposed between the first light guide plate and the brightness enhancement film.

4. In paragraph 3, A first prism sheet disposed between the first light guide plate and the brightness enhancement film; and A vehicle display device further comprising a second prism sheet disposed between the brightness enhancing film and the light control film.

5. In paragraph 1, A second light guide plate disposed between the light control film and the display panel; and A vehicle display device further comprising a second light source that emits light to the second light guide plate.

6. In paragraph 5, A vehicle display device, characterized in that the second light guide plate is formed of polycarbonate.

7. In paragraph 5, The second light guide plate includes a plurality of reflective patterns formed in a predetermined shape so that light emitted and reflected from the second light source is directed toward the driver's seat. A vehicle display device characterized in that the cross-section of the above reflection pattern has a pentagonal shape.

8. In paragraph 1, Each of the plurality of absorption patterns is formed to extend along a second direction perpendicular to the first direction while having a predetermined height with respect to the first direction in which the display panel and the backlight unit are laminated, A vehicle display device, characterized in that the plurality of absorption patterns are arranged along a third direction perpendicular to the first direction and the second direction.

9. In paragraph 8, A vehicle display device, characterized in that the shape of the cross-section of the absorption pattern in the first direction is a trapezoid.

10. In paragraph 1, A vehicle display device, characterized in that the haze of the above brightness enhancement film is 45% or less.

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