Signal processing device and electrophoretic light-shielding device including same

Abstract

The present disclosure relates to a signal processing device and a light-shielding device including same. The signal processing device according to one embodiment of the present disclosure controls an electrophoretic light-shielding device comprising a plurality of first pattern electrodes, a plurality of second pattern electrodes disposed to face the first pattern electrodes, and electrophoretic ink disposed between the first pattern electrodes and the second pattern electrodes, and, when switched to a light-shielding mode, performs controls that a positive pulse voltage is applied to some of the first pattern electrodes and a negative pulse voltage is applied to some other first pattern electrodes adjacent to the some first pattern electrodes. Therefore, a mode switching speed in the electrophoretic light-shielding device can be improved.

Description

Signal processing device and electrophoretic shading device having the same

[0001] The present disclosure relates to a signal processing device and an electrophoretic shading device having the same, and more particularly, to a signal processing device capable of improving a mode conversion speed in an electrophoretic shading device and an electrophoretic shading device having the same.

[0002] A vehicle is a device that allows the user to move in the desired direction. A representative example is an automobile.

[0003] Meanwhile, for the convenience of vehicle users, vehicle display devices are being installed inside vehicles.

[0004] For example, displays are placed in clusters and other areas to display various types of information. Meanwhile, vehicles are increasingly equipped with various displays, such as Audio Video Navigation (AVN) displays, separate from the cluster to display driving information and other information.

[0005] Meanwhile, when implementing a display as a transparent display, there are problems such as the display's visibility being weakened due to external light during the day, etc.

[0006] Meanwhile, research on electrophoresis in relation to external light is being conducted.

[0007] Prior art document, Korean Patent Publication No. 10-2012-0039948, discloses an electrophoretic display device.

[0008] However, according to prior literature, since a common voltage is applied to the second electrode among a pair of first and second electrodes, there is a problem that a considerable amount of time is required when switching modes.

[0009] The problem of the present disclosure is to provide a signal processing device capable of improving the mode conversion speed in an electrophoretic shading device and an electrophoretic shading device having the same.

[0010] Another problem of the present disclosure is to provide a signal processing device capable of improving the response speed in an electrophoretic shading device and an electrophoretic shading device having the same.

[0011] Another problem of the present disclosure is to provide a signal processing device capable of driving an electrophoretic shading device in various modes and an electrophoretic shading device having the same.

[0012] A signal processing device and an electrophoretic light-shielding device having the same according to one embodiment of the present disclosure for achieving the above-mentioned problem are configured to control an electrophoretic light-shielding device including a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite to the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, and when switching to a light-shielding mode, a positive pulse voltage is applied to some of the first pattern electrodes, and a negative pulse voltage is applied to other some of the first pattern electrodes adjacent to some of the first pattern electrodes.

[0013] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage whose size decreases to some of the first pattern electrodes in the light-shielding mode, and to sequentially apply a negative pulse voltage whose size decreases to other of the first pattern electrodes.

[0014] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to some of the first pattern electrodes in the light-shielding mode, and to sequentially apply a negative pulse voltage with an increasing pulse width to other of the first pattern electrodes.

[0015] Meanwhile, the signal processing device can control, in the shading mode, the potential difference between some of the first pattern electrodes and other some of the first pattern electrodes to sequentially decrease.

[0016] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to some of the second pattern electrodes and a negative pulse voltage to other some of the second pattern electrodes in the light-shielding mode.

[0017] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage whose size decreases to some of the second pattern electrodes in the light-shielding mode, and to sequentially apply a negative pulse voltage whose size decreases to other of the second pattern electrodes.

[0018] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to some of the second pattern electrodes in the light-shielding mode, and to sequentially apply a negative pulse voltage with an increasing pulse width to other some of the second pattern electrodes.

[0019] Meanwhile, the signal processing device can control, in the shading mode, the potential difference between some of the second pattern electrodes and other some of the second pattern electrodes to sequentially decrease.

[0020] Meanwhile, the signal processing device can control, in the light-shielding mode, an electric field to be formed between the first pattern electrodes and an electric field to be formed between the second pattern electrodes.

[0021] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to the first pattern electrode and a negative pulse voltage to the second pattern electrode in a transparent mode.

[0022] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage whose size decreases to the first pattern electrode in a transparent mode, and to sequentially apply a negative pulse voltage whose size decreases to the second pattern electrode.

[0023] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to the first pattern electrode in a transparent mode, and to sequentially apply a negative second pulse voltage with an increasing pulse width to the second pattern electrode.

[0024] Meanwhile, the signal processing device can control the potential difference between the first pattern electrode and the second pattern electrode to sequentially decrease in the transparent mode.

[0025] Meanwhile, the signal processing device can control an electric field to be formed between the first pattern electrode and the second pattern electrode in a transparent mode.

[0026] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to a first pattern electrode in a first region, which is a part of the shading device, and to apply a negative pulse voltage to a second pattern electrode in a partial shading mode, and can be controlled to apply a positive pulse voltage to some of the first pattern electrodes in a second region, which is another part of the shading device, and to apply a negative pulse voltage to other first pattern electrodes adjacent to some of the first pattern electrodes.

[0027] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to some of the second pattern electrodes in the second area in the partial shading mode, and to apply a negative pulse voltage to some of the other second pattern electrodes adjacent to some of the second pattern electrodes.

[0028] Meanwhile, the signal processing device can control the potential difference between the first pattern electrode and the second pattern electrode to be greater during daytime driving than during nighttime driving.

[0029] Meanwhile, the signal processing device can control the level of the pulse voltage applied to the first pattern electrode and the second pattern electrode to vary based on the ambient illumination of the vehicle.

[0030] Meanwhile, the signal processing device can further control a transparent display device or image projection device adjacent to the electrophoretic shading device.

[0031] A signal processing device and an electrophoretic shading device having the same according to one embodiment of the present disclosure control an electrophoretic shading device including a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, and when switching to a partial shading mode, controls to apply a positive pulse voltage to a first pattern electrode in a first region, which is a part of the shading device, and to apply a negative pulse voltage to the second pattern electrode, and in the partial shading mode, controls to apply a positive pulse voltage to some of the first pattern electrodes in a second region, which is another part of the shading device, and to apply a negative pulse voltage to other part of the first pattern electrodes adjacent to some of the first pattern electrodes.

[0032] A signal processing device and an electrophoretic shading device having the same according to one embodiment of the present disclosure control an electrophoretic shading device including a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, and when switching to a shading mode, controls to apply a positive pulse voltage to some of the first pattern electrodes and to apply a negative pulse voltage to other first pattern electrodes adjacent to some of the first pattern electrodes. Accordingly, the mode conversion speed in the electrophoretic shading device can be improved. Furthermore, the response speed in the electrophoretic shading device can be improved.

[0033] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage of decreasing magnitude to some of the first pattern electrodes in the shading mode, and to sequentially apply a negative pulse voltage of decreasing magnitude to other first pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0034] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to some of the first pattern electrodes in the shading mode, and to sequentially apply a negative pulse voltage with an increasing pulse width to other first pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0035] Meanwhile, the signal processing device can control the potential difference between some of the first pattern electrodes and other first pattern electrodes to sequentially decrease in the shading mode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0036] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to some of the second pattern electrodes and a negative pulse voltage to other second pattern electrodes in the shading mode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0037] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage of decreasing magnitude to some of the second pattern electrodes in the shading mode, and to sequentially apply a negative pulse voltage of decreasing magnitude to other second pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0038] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to some of the second pattern electrodes in the shading mode, and to sequentially apply a negative pulse voltage with an increasing pulse width to other second pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0039] Meanwhile, the signal processing device can control the potential difference between some of the second pattern electrodes and other second pattern electrodes to sequentially decrease in the shading mode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0040] Meanwhile, the signal processing device can control, in the shading mode, an electric field to be formed between the first pattern electrodes and an electric field to be formed between the second pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0041] Meanwhile, the signal processing device can be controlled to apply a positive pulse voltage to the first pattern electrode and a negative pulse voltage to the second pattern electrode in a transparent mode. Accordingly, the mode conversion speed in the electrophoretic shading device can be improved. Furthermore, the response speed in the electrophoretic shading device can be improved.

[0042] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage of decreasing magnitude to the first pattern electrode and to sequentially apply a negative pulse voltage of decreasing magnitude to the second pattern electrode in a transparent mode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0043] Meanwhile, the signal processing device can be controlled to sequentially apply a positive pulse voltage with an increasing pulse width to the first pattern electrode in a transparent mode, and to sequentially apply a negative second pulse voltage with an increasing pulse width to the second pattern electrode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0044] Meanwhile, the signal processing device can control the potential difference between the first pattern electrode and the second pattern electrode to sequentially decrease in transparent mode. Accordingly, the response speed of the electrophoretic light-shielding device can be improved.

[0045] Meanwhile, the signal processing device can control the formation of an electric field between the first pattern electrode and the second pattern electrode in a transparent mode. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0046] Meanwhile, the signal processing device can control, in the partial shading mode, to apply a positive pulse voltage to a first pattern electrode in a first region, which is a part of the shading device, and to apply a negative pulse voltage to a second pattern electrode, and, in the partial shading mode, to apply a positive pulse voltage to some of the first pattern electrodes in the second region, which is another part of the shading device, and to apply a negative pulse voltage to other first pattern electrodes adjacent to some of the first pattern electrodes. Accordingly, the mode conversion speed in the electrophoretic shading device can be improved. Furthermore, the response speed in the electrophoretic shading device can be improved.

[0047] Meanwhile, the signal processing device can control, in the partial shading mode, to apply a positive pulse voltage to some of the second pattern electrodes within the second region, and to apply a negative pulse voltage to other second pattern electrodes adjacent to some of the second pattern electrodes. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0048] Meanwhile, the signal processing device can control the potential difference between the first pattern electrode and the second pattern electrode to be greater during daytime driving than during nighttime driving. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0049] Meanwhile, the signal processing device can control the level of the pulse voltage applied to the first pattern electrode and the second pattern electrode to vary based on the ambient illumination of the vehicle. Accordingly, the response speed of the electrophoretic shading device can be improved.

[0050] Meanwhile, the signal processing device can further control a transparent display device or image projection device adjacent to the electrophoretic shading device. Accordingly, the electrophoretic shading device can be controlled in response to the transparent display device or image projection device.

[0051] A signal processing device and an electrophoretic shading device having the same according to one embodiment of the present disclosure control an electrophoretic shading device including a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, and when switching to a partial shading mode, a positive pulse voltage is applied to the first pattern electrodes in a first region, which is a part of the shading device, and a negative pulse voltage is applied to the second pattern electrodes. In the partial shading mode, a positive pulse voltage is applied to some of the first pattern electrodes in the second region, which is another part of the shading device, and a negative pulse voltage is applied to other part of the first pattern electrodes adjacent to some of the first pattern electrodes. Accordingly, a mode conversion speed in the electrophoretic shading device can be improved. Furthermore, a response speed in the electrophoretic shading device can be improved.

[0052] Figure 1 is a drawing showing an example of the exterior and interior of a vehicle.

[0053] FIG. 2 is a drawing illustrating the appearance of a vehicle display device according to an embodiment of the present disclosure.

[0054] FIG. 3 illustrates an example of an internal block diagram of the vehicle display device of FIG. 2.

[0055] FIG. 4 illustrates an example of the internal structure of an electrophoretic shading device according to an embodiment of the present disclosure.

[0056] Fig. 5 is an example of an internal block diagram of the electric shading device of Fig. 4.

[0057] Figures 6a to 6d illustrate an example of a transparent mode of the electrophoretic shading device of Figure 4 or Figure 5.

[0058] Figures 7a to 7c illustrate an example of a shading mode of an electrophoretic shading device.

[0059] Figures 8a to 8e illustrate an example of a partial shading mode of an electrophoretic shading device.

[0060] Figures 9a to 9c illustrate other examples of partial shading modes of an electrophoretic shading device.

[0061] FIGS. 10A to 16B are drawings for reference in explaining various operations of a transmissive display including the electrophoretic shading device of FIG. 4 or FIG. 5 and the first display.

[0062] Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

[0063] 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.

[0064] Figure 1 is a drawing showing an example of the exterior and interior of a vehicle.

[0065] Referring to the drawing, the vehicle (200) is operated by a plurality of wheels (103FR, 103FL, 103RL, etc.) that rotate by a power source and a steering wheel (150) for controlling the direction of travel of the vehicle (200).

[0066] Meanwhile, the vehicle (200) may further be equipped with a camera (195) for capturing images of the front of the vehicle.

[0067] Meanwhile, the vehicle (200) may be equipped with multiple displays (180, 180h) for displaying images, information, etc. inside.

[0068] For example, among the plurality of displays (180, 180h), the first display (180) may be a cluster display and an AVN (Audio Video Navigation) display, and the second display (180h) may be a HUD display, which is a head-up display (HUD) in which an image is projected onto a predetermined area (ARa) of a windshield (WS).

[0069] As another example, the first display (180) may be a cluster display, an AVN (Audio Video Navigation) display, and a passenger seat display.

[0070] Meanwhile, the first display (180) may be placed between the dashboard (DS) and the windshield (WS). At this time, the first display (180) may be a transparent display.

[0071] Meanwhile, the vehicle (200) further includes an electric shading device (180m) disposed between the first display (180) and the dashboard (DS), or between the first display (180) and the windshield (WS), or between the head-up display (180h) and the windshield (WS).

[0072] Meanwhile, the electric shading device (180m) and the first display (180) can operate in conjunction with each other and ultimately can operate as a transparent display (180b).

[0073] Meanwhile, the vehicle (200) described in this specification may be a concept that includes all of a vehicle equipped with an engine as a power source, a hybrid vehicle equipped with an engine and an electric motor as a power source, and an electric vehicle equipped with an electric motor as a power source.

[0074] FIG. 2 is a drawing illustrating the appearance of a vehicle display device according to an embodiment of the present disclosure.

[0075] A vehicle display device (100 in FIG. 3) according to an embodiment of the present disclosure may include a signal processing device (170) that performs signal processing for displaying images, information, etc. on at least one of a plurality of displays (180, 180h).

[0076] Among the plurality of displays (180, 180h), the first display (180) may be a cluster display for displaying driving status, operation information, etc., and an AVN (Audio Video Navigation) display for displaying vehicle driving information, navigation maps, various entertainment information, or images, and the second display (180h) may be a HUD display for displaying vehicle driving information.

[0077] Meanwhile, the signal processing device (170) controls the electric shading device (180m) in the vehicle display device (100).

[0078] The signal processing device (170) has a memory (508) and a processor (175 in FIG. 3) inside, and can control multiple displays (180, 180h).

[0079] Meanwhile, the signal processing device (170) can execute the first virtual machine to the third virtual machine (not shown to not shown) on the hypervisor (505 in FIG. 15) within the processor (175).

[0080] The first virtual machine (not shown) is a server virtual machine and can control the second virtual machine (not shown) and the third virtual machine (not shown), which are guest virtual machines.

[0081] Meanwhile, the second virtual machine can be named the first guest virtual machine (Guest Virtual Maschine), and the third virtual machine can be named the second guest virtual machine.

[0082] A first guest virtualization machine (not shown) can operate for a first display (180), and a second guest virtualization machine (not shown) can operate for a second display (180h).

[0083] Meanwhile, the server virtualization machine (not shown) within the processor (175) can control the memory (508) based on the hypervisor (505) to be set for the same data transmission to the first guest virtualization machine (not shown) and the second guest virtualization machine (not shown). Accordingly, the same information or the same image can be displayed in synchronization on the first display (180) and the second display (180h) within the vehicle.

[0084] Meanwhile, a server virtualization machine (not shown) within the processor (175) can receive and process wheel speed sensor data of the vehicle, and transmit the processed wheel speed sensor data to at least one of the first guest virtualization machine (not shown) or the second guest virtualization machine (not shown). Accordingly, the wheel speed sensor data of the vehicle can be shared with at least one virtual machine, etc.

[0085] Accordingly, it is possible to control multiple displays (180, 180h) using one signal processing device (170).

[0086] Meanwhile, some of the multiple displays (180, 180h) may operate under Linux OS, while others may operate under Web OS.

[0087] The signal processing device (170) according to the embodiment of the present disclosure can control multiple displays (180, 180h) operating under various operating systems (OS) to display the same information or the same image in synchronization.

[0088] FIG. 3 illustrates an example of an internal block diagram of a vehicle display device according to an embodiment of the present disclosure.

[0089] Referring to the drawings, a vehicle display device (100) according to an embodiment of the present disclosure may include an input unit (110), a communication device (120), an interface (130), a memory (140), a signal processing device (170), a plurality of displays (180, 180h), an audio output unit (185), and a power supply unit (190).

[0090] Meanwhile, the vehicle display device (100) according to the embodiment of the present disclosure further includes an electric shading device (180m).

[0091] The input unit (110) may be equipped with physical buttons, pads, etc. for button input, touch input, etc.

[0092] Meanwhile, the input unit (110) may be equipped with a microphone (not shown) for user voice input.

[0093] The communication device (120) can exchange data wirelessly with a mobile terminal (800) or a server (not shown).

[0094] In particular, the communication device (120) can wirelessly exchange data with the vehicle driver's mobile terminal. Various data communication methods are possible, such as Bluetooth, WiFi, WiFi Direct, and APiX.

[0095] The communication device (120) can receive weather information, road traffic information, for example, TPEG (Transport Protocol Expert Group) information, from a mobile terminal (800) or a server (not shown). To this end, the communication device (120) may be equipped with a mobile communication module (not shown).

[0096] The interface (130) can receive sensor information, etc. from the ECU (770) or sensor device (760) and transmit the received information to the signal processing device (170).

[0097] Here, the sensor information may include at least one of 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 interior temperature information, and vehicle interior humidity information.

[0098] Such sensor information may be obtained from a heading sensor, a yaw sensor, a gyro sensor, a position module, a vehicle forward / backward sensor, a wheel sensor, a vehicle speed sensor, a body tilt detection sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor based on steering wheel rotation, a vehicle internal temperature sensor, a vehicle internal humidity sensor, etc. Meanwhile, the position module may include a GPS module for receiving GPS information.

[0099] Meanwhile, the interface (130) can receive vehicle front image data, vehicle side image data, vehicle rear image data, vehicle surrounding obstacle distance information, etc. from a camera (195) or a rider (not shown), and transmit the received information to a signal processing device (170).

[0100] The memory (140) can store various data for the overall operation of the vehicle display device (100), such as a program for processing or controlling the signal processing device (170).

[0101] For example, the memory (140) may store data regarding a hypervisor, a server virtualization machine (not shown), and multiple guest virtualization machines for execution within the processor (175).

[0102] The audio output unit (185) converts an electric signal from the signal processing device (170) into an audio signal and outputs it. For this purpose, a speaker or the like may be provided.

[0103] The power supply unit (190) can supply power required for the operation of each component under the control of the signal processing device (170). In particular, the power supply unit (190) can receive power from a battery or the like inside the vehicle.

[0104] The second display, the HUD display (180h), includes an image generating device for image projection and can output an augmented reality-based object under the control of a signal processing device (170).

[0105] For example, the HUD display (180h) can output vehicle speed information, vehicle direction information, front vehicle object, distance indicator from the front vehicle, etc.

[0106] As another example, the HUD display (180h) can output an augmented reality rain carpet, an augmented reality route carpet, or an augmented reality dynamic carpet corresponding to the lane image.

[0107] The signal processing device (170) can control multiple displays (180, 180h).

[0108] The signal processing device (170) controls the operation of the electrophoretic shading device (180m).

[0109] For example, the signal processing device (170) can control the electrophoretic shading device (180m) to operate in a transparent mode, a shading mode, or a partial shading mode in response to the image display of the first display (180), which is a transparent display.

[0110] The signal processing device (170) controls the overall operation of each unit within the vehicle display device (100).

[0111] For example, the signal processing device (170) may include a memory (508) and a processor (175) that performs signal processing for a vehicle display (180, 180h).

[0112] The processor (175) executes a hypervisor (505 in FIG. 15), and can execute a server virtualization machine (not shown) and multiple guest virtualization machines (not shown) on the executed hypervisor.

[0113] At this time, the first guest virtualization machine (not shown) can operate for the first display (180), and the second guest virtualization machine (not shown) can operate for the second display (180h).

[0114] Meanwhile, the signal processing device (170) can process various signals such as audio signals, video signals, and data signals. To this end, the signal processing device (170) can be implemented in the form of a system on chip (SOC).

[0115] Meanwhile, the first display (180) may be an electrophoretic light-shielding device (180) that is robust to external light.

[0116] FIG. 4 illustrates an example of the internal structure of an electrophoretic shading device according to an embodiment of the present disclosure.

[0117] Referring to the drawing, the electrophoretic shading device (180) includes a plurality of first pattern electrodes (425) spaced apart from each other, a plurality of second pattern electrodes (415) arranged opposite the first pattern electrodes (425) and spaced apart from each other, and electrophoretic ink (430) arranged between the first pattern electrodes (425) and the second pattern electrodes (415).

[0118] Figure 4 (a) is a first side view of the electrophoretic shading device (180) as viewed from the first side.

[0119] The electrophoretic shading device (180) includes a first pattern electrode (425) and a second pattern electrode (415) disposed between a first substrate (410) and a second substrate (420).

[0120] As shown in the drawing, a second pattern electrode (415) may be attached to one surface of a first substrate (410), and a first pattern electrode (425) may be attached to one surface of a second substrate (420).

[0121] Electrophoretic ink (430) is placed between the first pattern electrode (425) and the second pattern electrode (415).

[0122] Meanwhile, it is preferable that the first substrate (410) and the second substrate (420) are transparent substrates.

[0123] Meanwhile, it is preferable that the first pattern electrode (425) and the second pattern electrode (415) are transparent electrodes.

[0124] Figure 4 (b) is a second side view of the electrophoretic shading device (180) as viewed from the second side.

[0125] As shown in the drawing, a plurality of first pattern electrodes (425a to 425h) spaced apart from each other may be attached to one surface of the first substrate (410), and a plurality of second pattern electrodes (415a to 415h) spaced apart from each other may be attached to one surface of the second substrate (420).

[0126] Meanwhile, for operation in various modes of the electrophoretic ink (430), it is preferable that the distance (DTa) between the first pattern electrode (425a) and the second pattern electrode (415a) acting as substitutes be greater than the distance (DTb) between the adjacent first pattern electrodes (425a, 425b).

[0127] Meanwhile, the electrophoretic ink (430) includes charged particles that move by the potential difference or electric field between the first pattern electrode (425) and the second pattern electrode (415).

[0128] For example, the electrophoretic ink (430) may include red charged particles, green charged particles, and blue charged particles.

[0129] In the past, by applying a common voltage between the first pattern electrode (425) and the second pattern electrode (415), the time required for the movement of charged particles, such as when switching modes, took a considerable amount of time, such as several tens of seconds.

[0130] Accordingly, in the present disclosure, a pulse voltage is applied to each of the first pattern electrode (425) and the second pattern electrode (415), thereby improving the response speed of the electrophoretic ink (430) or the charged particles within the electrophoretic ink (430).

[0131] In addition, in the present disclosure, the electrophoretic ink (430) with improved response speed is made to operate in various modes.

[0132] For example, the transparent mode, as an image display mode, may have a light transmittance of approximately 60% or more based on an electric field formed between the first pattern electrode (425) and the second pattern electrode (415).

[0133] As another example, the shading mode, as a video display stop mode or interior mode, may have a light transmittance of approximately 10% or less based on a first electric field formed between adjacent first pattern electrodes or a second electric field formed between adjacent second pattern electrodes.

[0134] As another example, a partial shading mode is a partial image display mode in which some areas operate in a transparent mode based on an electric field formed between the first pattern electrode (425) and the second pattern electrode (415) in some areas, and other areas may operate in a shading mode based on a first electric field formed between adjacent first pattern electrodes or a second electric field formed between adjacent second pattern electrodes in other areas.

[0135] Fig. 5 is an example of an internal block diagram of the electric shading device of Fig. 4.

[0136] Referring to the drawing, the electric shading device (180) may include a panel (210m), a first voltage driving unit (234m) that applies a pulse voltage to a first pattern electrode of the panel (210), a second voltage driving unit (236m) that applies a pulse voltage to a second pattern electrode of the panel (210), and a signal processing unit (170) that controls the first voltage driving unit (234m) and the second voltage driving unit (236m).

[0137] The panel (210m) includes, as shown in FIG. 4, a plurality of first pattern electrodes (425) spaced apart from each other, a plurality of second pattern electrodes (415) arranged opposite the first pattern electrodes (425) and spaced apart from each other, and electrophoretic ink (430) arranged between the first pattern electrodes (425) and the second pattern electrodes (415).

[0138] The signal processing device (170) can control the first voltage driving unit (234m) and the second voltage driving unit (236m) based on a control signal, R, G, B data signals, a vertical synchronization signal (Vsync), etc.

[0139] For example, in transparent mode, the signal processing device (170) controls to apply a positive first pulse voltage (PSa) to the first pattern electrodes (425a to 425h) and to apply a negative second pulse voltage (PSb) to the second pattern electrodes (415a to 415h).

[0140] Meanwhile, the signal processing device (170) controls to apply a third pulse voltage (PSc) of positive polarity to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425a to 425h) in a light-shielding mode having a lower transmittance than the transparent mode, and to apply a fourth pulse voltage (PSd) of negative polarity to some of the first pattern electrodes (425b, 425d) adjacent to some of the first pattern electrodes (425a, 425c, 425e).

[0141] Accordingly, the mode conversion speed in the electrophoretic shading device (180) can be improved. Furthermore, the response speed in the electrophoretic shading device (180) can be improved.

[0142] Meanwhile, the signal processing device (170) can control, in the light-shielding mode, to apply a fifth pulse voltage (PSc) of positive polarity to some of the second pattern electrodes (415a, 415c, 415e) among the second pattern electrodes (415a to 415h), and to apply a sixth pulse voltage (PSd) of negative polarity to some of the second pattern electrodes (415b, 415d) adjacent to some of the second pattern electrodes (415a, 415c, 415e). Accordingly, the mode conversion speed in the electrophoretic light-shielding device (180) can be improved.

[0143] Meanwhile, the signal processing device (170) controls, in the partial shading mode, an electric field to be formed between the first pattern electrode (425) and the second pattern electrode (415) within a first region, which is a part of the display (180), and controls, in the second region, which is another part of the display (180), an electric field to be formed between the first pattern electrode (425) and an electric field to be formed between the second pattern electrode (415). Accordingly, the electrophoretic shading device (180) can be driven in various modes.

[0144] Figures 6a to 6d illustrate an example of a transparent mode of the electrophoretic shading device of Figure 4 or Figure 5.

[0145] First, Fig. 6a illustrates an example of an electric field formed within an electrophoretic shading device (180 m).

[0146] Referring to the drawing, the signal processing device (170) controls, in transparent mode, an electric field (FDa) to be formed between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e), as shown in (a) of FIG. 6a.

[0147] Accordingly, as shown in (b) of FIG. 6a, in transparent mode, electrophoretic ink (430a to 430e) can be placed between the first pattern electrode (425a to 425e) and the second pattern electrode (415a to 415e).

[0148] Therefore, in transparent mode, the light transmittance can be maintained at 60% or more.

[0149] Next, FIG. 6b illustrates an example of pulse voltages applied to the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) in transparent mode.

[0150] Referring to the drawing, the signal processing device (170) controls to apply a positive first pulse voltage (PSa) to the first pattern electrodes (425a to 425e) and a negative second pulse voltage (PSb) to the second pattern electrodes (415a to 415e) when switching to a transparent mode. Accordingly, the mode conversion speed in the electrophoretic light-shielding device can be improved.

[0151] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive first pulse voltage (PSa) having a smaller magnitude to the first pattern electrodes (425a to 425e) in a transparent mode, and to sequentially apply a negative second pulse voltage (PSb) having a smaller magnitude to the second pattern electrodes (415a to 415e). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0152] In the drawing, the level of the positive first pulse voltage (PSa) is illustrated as sequentially decreasing to LV5, LV4, LV3, LV2, and LV1, and the level of the negative second pulse voltage (PSb) is illustrated as sequentially changing to -LV5, -LV4, -LV3, -LV2, and -LV1.

[0153] That is, the magnitude of the negative second pulse voltage (PSb) sequentially decreases to LV5, LV4, LV3, LV2, and LV1.

[0154] For example, LV5, LV4, LV3, LV2, and LV1 can be approximately 100V, 80V, 60V, 40V, and 20V, respectively.

[0155] By applying the positive first pulse voltage (PSa) and the negative second pulse voltage (PSb), the mode conversion time or response time of the electrophoretic ink (430) can be shortened to approximately 1 second or less. Accordingly, rapid mode conversion or rapid response speed can be achieved.

[0156] Meanwhile, after the level of the positive first pulse voltage (PSa) is LV1 and the level of the negative second pulse voltage (PSb) is -LV1, the electrophoretic ink (430) operates in a transparent mode without applying separate voltages to the plurality of first pattern electrodes (425a to 425h) and the plurality of second pattern electrodes (415a to 415h).

[0157] Meanwhile, according to FIG. 6b, the signal processing device (170) can control the potential difference between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) to sequentially decrease in transparent mode. Accordingly, the response speed of the electrophoretic light-shielding device (180) can be improved.

[0158] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive first pulse voltage (PSa) with an increasing pulse width to the first pattern electrodes (425a to 425e) in a transparent mode, and to sequentially apply a negative second pulse voltage (PSb) with an increasing pulse width to the second pattern electrodes (415a to 415e). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0159] For example, the signal processing device (170) can control the pulse width to increase as the level of the positive first pulse voltage (PSa) applied to the first pattern electrodes (425a to 425e) decreases in the transparent mode.

[0160] In the drawing, it is illustrated that when the level of the positive first pulse voltage (PSa) sequentially decreases to LV5, LV4, LV3, LV2, and LV1, each pulse width sequentially decreases to PWa, PWb, PWc, PWd, and PWe.

[0161] Meanwhile, the signal processing device (170) can control the pulse width to increase as the magnitude of the negative second pulse voltage (PSb) applied to the second pattern electrodes (415a to 415e) decreases in the transparent mode.

[0162] In the drawing, it is illustrated that when the magnitude of the second pulse voltage (PSb) of negative polarity is sequentially reduced to LV5, LV4, LV3, LV2, and LV1, each pulse width is sequentially reduced to PWa, PWb, PWc, PWd, and PWe.

[0163] Next, Fig. 6c illustrates another example of an electrophoretic shading device (180mb).

[0164] Referring to the drawing, the electrophoretic shading device (180mb) of FIG. 6c is similar to the electrophoretic shading device (180m) of FIG. 6a, but differs in that the second pattern electrodes (415a to 415e) are arranged on the upper side and the first pattern electrodes (425a to 425e) are arranged on the lower side.

[0165] Meanwhile, the signal processing device (170) can control, in transparent mode, a second pulse voltage (PSb) of negative polarity to be applied to the second pattern electrodes (415a to 415e) on the upper side and a first pulse voltage (PSa) of positive polarity to be applied to the first pattern electrodes (425a to 425h) on the lower side.

[0166] That is, the signal processing device (170) controls, in transparent mode, an electric field (FDa) to be formed between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e), as shown in (a) of FIG. 6c.

[0167] Accordingly, as shown in (b) of FIG. 6c, in transparent mode, electrophoretic ink (430a to 430e) can be placed between the first pattern electrode (425a to 425e) and the second pattern electrode (415a to 415e).

[0168] Figure 6d illustrates an example of a transparent mode in an electrophoretic shading device (180m) in transparent mode.

[0169] As shown in the drawing, the electrophoretic shading device (180 m) can transmit light over the entire area in transparent mode.

[0170] Figures 7a to 7c illustrate an example of a shading mode of an electrophoretic shading device.

[0171] First, Fig. 7a illustrates another example of an electric field formed within an electrophoretic shading device (180 m).

[0172] Referring to the drawing, the signal processing device (170) controls, in the light-shielding mode having a lower transmittance than the transparent mode, an electric field is formed between the first pattern electrodes (425a to 425e) and an electric field is formed between the second pattern electrodes (415a to 415e), as shown in (a) of FIG. 7a, in the light-shielding mode.

[0173] Accordingly, as shown in (b) of Fig. 7a, in the light-shielding mode, electrophoretic ink (430t) can be placed between the first pattern electrodes (425a to 425e) and between the second pattern electrodes (415a to 415e).

[0174] Therefore, in the shading mode, the light transmittance can be maintained at 10% or less.

[0175] Next, FIG. 7b illustrates an example of a pulse voltage applied to the first pattern electrode (425a to 425e) and the second pattern electrode (415a to 415e) in the shading mode.

[0176] Referring to the drawing, when the signal processing device (170) is switched to the light-blocking mode, the signal processing device (170) controls to apply a positive third pulse voltage (PSc) to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425a to 425e) and to apply a negative fourth pulse voltage (PSd) to some of the other first pattern electrodes (425b, 425db) adjacent to some of the first pattern electrodes (425a, 425c, 425e).

[0177] Meanwhile, the signal processing device (170) can control, in the light-shielding mode, to apply a fifth pulse voltage (PSc) of positive polarity to some of the second pattern electrodes (415a, 415c, 415ea) among the second pattern electrodes (415a to 415e), and to apply a sixth pulse voltage (PSd) of negative polarity to some of the second pattern electrodes (415a, 415c, 415eb) adjacent to some of the second pattern electrodes (415a, 415c, 415ea). Accordingly, the mode conversion speed in the electrophoretic light-shielding device (180) can be improved.

[0178] For example, in the light-shielding mode, the signal processing device (170) controls to apply a third pulse voltage (PSc) of positive polarity to the odd first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425a to 425e), and to apply a fourth pulse voltage (PSd) of negative polarity to the even first pattern electrodes (425b, 425d) adjacent to the odd first pattern electrodes (425a, 425c, 425e).

[0179] Meanwhile, the signal processing device (170) controls, in the light-shielding mode, to apply a fifth pulse voltage (PSc) of positive polarity to the odd second pattern electrodes (415a, 415c, 415e) among the second pattern electrodes (415a to 415e), and to apply a sixth pulse voltage (PSd) of negative polarity to the right second pattern electrodes (415b, 415d) adjacent to the odd second pattern electrodes (415a, 415c, 415e).

[0180] At this time, the fifth pulse voltage (PSc) of positive polarity may be the same as the third pulse voltage (PSc) of positive polarity, and the sixth pulse voltage (PSd) of negative polarity may be the same as the fourth pulse voltage (PSd) of negative polarity.

[0181] Meanwhile, unlike the drawing, the signal processing device (170) may be controlled to apply a third pulse voltage (PSc) of positive polarity to the even first pattern electrode (425b, 425d) among the first pattern electrodes (425a to 425e) in the light-shielding mode, and to apply a fourth pulse voltage (PSd) of negative polarity to the odd first pattern electrode (425a, 425c, 425e).

[0182] Meanwhile, unlike the drawing, the signal processing device (170) may be controlled to apply a fifth pulse voltage (PSc) of positive polarity to the superior second pattern electrode (415b, 415d) among the second pattern electrodes (415a to 415e) in the light-shielding mode, and to apply a sixth pulse voltage (PSd) of negative polarity to the odd second pattern electrode (415a, 415c, 415e).

[0183] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) having a smaller size to some of the first pattern electrodes (425a, 425c, 425e) in the shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) having a smaller size to other first pattern electrodes (425b, 425db). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0184] For example, in the shading mode, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) whose size decreases to the odd first pattern electrodes (425a, 425c, 425e) and to sequentially apply a negative fourth pulse voltage (PSd) whose size decreases to the even first pattern electrodes (425b, 425d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0185] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a fifth pulse voltage (PSc) of positive polarity, which has a smaller size, to the odd second pattern electrodes (415a, 415c, 415e) in the shading mode, and to sequentially apply a sixth pulse voltage (PSd) of negative polarity, which has a smaller size, to the odd second pattern electrodes (415b, 415d).

[0186] In the drawing, the level of the positive third pulse voltage (PSc) sequentially decreases to LV5, LV3, LV2, and LV1, and the level of the negative fourth pulse voltage (PSd) sequentially changes to -LV5, -LV4, -LV3, -LV2, and -LV1.

[0187] That is, the magnitude of the negative fourth pulse voltage (PSb) sequentially decreases to LV5, LV3, LV2, and LV1.

[0188] For example, LV5, LV3, LV2, and LV1 can be approximately 100V, 60V, 40V, and 20V, respectively.

[0189] By applying the positive third pulse voltage (PSc) and the negative fourth pulse voltage (PSd), the mode conversion time or response time of the electrophoretic ink (430) can be shortened to approximately 1 second or less. Accordingly, rapid mode conversion or rapid response speed can be achieved.

[0190] Meanwhile, after the level of the positive third pulse voltage (PSc) is LV1 and the level of the negative fourth pulse voltage (PSd) is -LV1, the electrophoretic ink (430) operates in a light-shielding mode without applying separate voltages to the plurality of first pattern electrodes (425a to 425h) and the plurality of second pattern electrodes (415a to 415h).

[0191] Meanwhile, according to FIG. 7b, the signal processing device (170) can control, in the shading mode, the potential difference between some of the adjacent first pattern electrodes (425a, 425c, 425e) and other some of the first pattern electrodes (425b, 425db) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0192] For example, the signal processing device (170) can control, in the shading mode, the potential difference between the odd first pattern electrodes (425a, 425c, 425e) and the superior first pattern electrodes (425b, 425d) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0193] For example, the signal processing device (170) can control, in the shading mode, the potential difference between the odd second pattern electrodes (415a, 415c, 415e) and the odd second pattern electrodes (415b, 415d) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0194] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) with an increasing pulse width to some of the first pattern electrodes (425a, 425c, 425e) in the shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) with an increasing pulse width to other some of the first pattern electrodes (425b, 425db). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0195] Similarly, the signal processing device (170) can be controlled to sequentially apply a fifth pulse voltage (PSc) of positive polarity with increasing pulse width to some of the second pattern electrodes (415a, 415c, 415ea) in the shading mode, and to sequentially apply a sixth pulse voltage (PSd) of negative polarity with increasing pulse width to other some of the second pattern electrodes (415a, 415c, 415eb). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0196] For example, in the shading mode, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) with an increasing pulse width to the odd first pattern electrodes (425a, 425c, 425e) and to sequentially apply a negative fourth pulse voltage (PSd) with an increasing pulse width to the odd first pattern electrodes (425b, 425d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0197] For example, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) with an increasing pulse width to the odd second pattern electrodes (415a, 415c, 415e) in the shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) with an increasing pulse width to the odd second pattern electrodes (415b, 415d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0198] For example, the signal processing device (170) can control the pulse width to increase as the level of the positive third pulse voltage (PSc) applied to the odd first pattern electrode (425a, 425c, 425e) or odd second pattern electrode (415a, 415c, 415e) decreases in the shading mode.

[0199] In the drawing, it is illustrated that when the level of the third pulse voltage (PSc) of positive polarity sequentially decreases to LV5, LV3, LV2, and LV1, each pulse width sequentially decreases to PWa, PWb, PWc, and PWd.

[0200] For example, the signal processing device (170) can control the pulse width to increase as the magnitude of the negative fourth pulse voltage (PSd) applied to the superior first pattern electrode (425b, 425d) or superior second pattern electrode (415b, 415d) decreases in the shading mode.

[0201] In the drawing, it is illustrated that when the magnitude of the negative fourth pulse voltage (PSd) sequentially decreases to LV5, LV3, LV2, and LV1, the pulse widths of each sequentially decrease to PWa, PWb, PWc, and PWd.

[0202] Next, Fig. 7c illustrates another example of an electrophoretic shading device (180mb).

[0203] Referring to the drawing, the electrophoretic shading device (180mb) of FIG. 7c is similar to the electrophoretic shading device (180m) of FIG. 7a, but differs in that the second pattern electrodes (415a to 415e) are arranged on the upper side and the first pattern electrodes (425a to 425e) are arranged on the lower side.

[0204] Meanwhile, the signal processing device (170) can be controlled to apply a fifth pulse voltage (PSc) of positive polarity to some of the second pattern electrodes (415a, 415c, 415e) among the second pattern electrodes (415a to 415e) on the upper side in the light-shielding mode, and to apply a sixth pulse voltage (PSd) of negative polarity to some of the second pattern electrodes (415b, 415d) adjacent to some of the second pattern electrodes (415a, 415c, 415e).

[0205] Meanwhile, the signal processing device (170) can control, in the light-shielding mode, to apply a positive third pulse voltage (PSc) to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425a to 425h) on the lower side, and to apply a negative fourth pulse voltage (PSd) to some of the first pattern electrodes (425b, 425d) adjacent to some of the first pattern electrodes (425a, 425c, 425e).

[0206] That is, the signal processing device (170) controls, in the light-shielding mode, an electric field to be formed between the first pattern electrodes (425a to 425e) and an electric field to be formed between the second pattern electrodes (415a to 415e), as shown in (a) of Fig. 7c.

[0207] Accordingly, as shown in (b) of Fig. 7c, in the light-shielding mode, electrophoretic ink (430t) can be placed between the first pattern electrodes (425a to 425e) and between the second pattern electrodes (415a to 415e).

[0208] Figure 7d illustrates an example of a shading mode in an electrophoretic shading device (180 m) in shading mode.

[0209] As shown in the drawing, the electric shading device (180 m) can block light over the entire area in the shading mode.

[0210] Meanwhile, referring to FIGS. 6A to 7D, a signal processing device (170) according to another embodiment of the present disclosure controls to apply a positive pulse voltage to the first pattern electrodes (425a to 425e) in a transparent mode and to apply a negative pulse voltage to the second pattern electrodes (415a to 415e), and controls to apply a positive pulse voltage to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425a to 425e) in a light-shielding mode and to apply a negative pulse voltage to some of the first pattern electrodes (425b, 425db) adjacent to some of the first pattern electrodes (425a, 425c, 425e).

[0211] Accordingly, the mode conversion speed to transparent mode or shading mode in the electrophoretic shading device (180) can be improved. Furthermore, the response speed when the electrophoretic shading device (180) operates in shading mode can be improved.

[0212] Figures 8a to 8e illustrate an example of a partial shading mode of an electrophoretic shading device.

[0213] First, Fig. 8a illustrates another example of an electric field formed within an electrophoretic shading device (180 m).

[0214] Referring to the drawing, when the signal processing device (170) switches to a partial shading mode, the signal processing device (170) controls to form an electric field (FDa) between the first pattern electrodes (425a, 425b) and the second pattern electrodes (415a, 415b) in the first region (ARma), which is a part of the display (180), and controls to form an electric field (FDc) between the first pattern electrodes (425c, 425d) in the second region (ARmb), which is another part of the display (180), and controls to form an electric field between the second pattern electrodes (415c, 415d) in the second region (ARmb). Accordingly, the electrophoretic shading device (180) can be driven in various modes.

[0215] As shown in (b) of FIG. 8a, in the partial shading mode, electrophoretic ink (430a) may be placed between the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the first region (ARma), and electrophoretic ink (430t) may be placed between the first pattern electrode (425c, 425d) in the second region (ARmb) and between the second pattern electrode (415c, 415d) in the second region (ARmb).

[0216] Meanwhile, the signal processing device (170) can control the formation of an electric field (FDd) between the first pattern electrode (425e) and the second pattern electrode (415e) in the third region (ARmc), which is another region of the display (180), in the partial shading mode.

[0217] Accordingly, as shown in (b) of FIG. 8a, in the partial shading mode, electrophoretic ink (430e) can be placed between the first pattern electrode (425e) and the second pattern electrode (415e) within the third region (ARmc).

[0218] Accordingly, the light transmittance can be maintained at 60% or more in the first region (ARma) and third region (ARmc), which are transparent modes, and the light transmittance can be maintained at 10% or less in the second region (ARmb), which is light-shielding mode.

[0219] Next, FIG. 8b illustrates an example of a pulse voltage applied to the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the first region (ARma) during the partial shading mode.

[0220] Referring to the drawing, the signal processing device (170) can be controlled to apply a positive first pulse voltage (PSa) to a first pattern electrode (425a, 425b) in a first region (ARma), which is a part of a display (180), in a partial shading mode, and to apply a negative second pulse voltage (PSb) to a second pattern electrode (415a, 415b) in the first region (ARma).

[0221] Meanwhile, the signal processing device (170) can control, in the partial shading mode, to sequentially apply a positive first pulse voltage (PSa) having a smaller size to the first pattern electrodes (425a, 425b) within the first region (ARma), which is a partial region of the display (180), and to sequentially apply a negative second pulse voltage (PSb) having a smaller size to the second pattern electrodes (415a, 415b) within the first region (ARma). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0222] In the drawing, the level of the positive first pulse voltage (PSa) is illustrated as sequentially decreasing to LV5, LV4, LV3, LV2, and LV1, and the level of the negative second pulse voltage (PSb) is illustrated as sequentially changing to -LV5, -LV4, -LV3, -LV2, and -LV1.

[0223] By applying the positive first pulse voltage (PSa) and the negative second pulse voltage (PSb), the mode conversion time or response time of the electrophoretic ink (430) can be shortened to approximately 1 second or less. Accordingly, rapid mode conversion or rapid response speed can be achieved.

[0224] Meanwhile, according to FIG. 8b, the signal processing device (170) can control, in the partial shading mode, the potential difference between the first pattern electrode (425a, 425b) in the first region (ARma), which is a partial region of the display (180), and the second pattern electrode (415a, 415b) in the first region (ARma) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0225] Meanwhile, the signal processing device (170) can control, in the partial shading mode, to sequentially apply a positive first pulse voltage (PSa) with an increasing pulse width to the first pattern electrodes (425a, 425b) within the first region (ARma), which is a partial region of the display (180), and to sequentially apply a negative second pulse voltage (PSb) with an increasing pulse width to the second pattern electrodes (415a, 415b) within the first region (ARma). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0226] For example, in a partial shading mode, the signal processing device (170) can control the pulse width to increase as the level of the positive first pulse voltage (PSa) applied to the first pattern electrode (425a, 425b) in the first area (ARma), which is a part of the display (180), decreases.

[0227] Meanwhile, the signal processing device (170) can control the pulse width to increase as the magnitude of the negative second pulse voltage (PSb) applied to the second pattern electrode (415a, 415b) in the first region (ARma) decreases in the partial shading mode.

[0228] Next, FIG. 8c illustrates an example of a pulse voltage applied to the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the second region (ARmb) during the partial shading mode.

[0229] Referring to the drawing, the signal processing device (170) controls, in the partial shading mode, to apply a positive third pulse voltage (PSc) to some of the first pattern electrodes (425c, 425d) in the second area (ARmb), which is another part of the display (180), and to apply a negative fourth pulse voltage (PSd) to some of the first pattern electrodes (425d) adjacent to some of the first pattern electrodes (425c).

[0230] Meanwhile, the signal processing device (170) can control, in the partial shading mode, to apply a fifth pulse voltage (PSc) of positive polarity to some of the second pattern electrodes (415c, 415d) within the second region (ARmb), and to apply a sixth pulse voltage (PSd) of negative polarity to some of the second pattern electrodes (415d) adjacent to some of the second pattern electrodes (415c). Accordingly, the mode conversion speed in the electrophoretic shading device (180) can be improved.

[0231] At this time, the fifth pulse voltage (PSc) of positive polarity may be the same as the third pulse voltage (PSc) of positive polarity, and the sixth pulse voltage (PSd) of negative polarity may be the same as the fourth pulse voltage (PSd) of negative polarity.

[0232] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) having a smaller size to some of the first pattern electrodes (425c) within the second region (ARmb) in the partial shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) having a smaller size to other first pattern electrodes (425d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0233] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a fifth pulse voltage (PSc) of positive polarity, which has a smaller size, to some of the second pattern electrodes (415c, 415d) within the second region (ARmb) in the partial shading mode, and to sequentially apply a sixth pulse voltage (PSd) of negative polarity, which has a smaller size, to some of the second pattern electrodes (415d) adjacent to some of the second pattern electrodes (415c).

[0234] Meanwhile, according to FIG. 8c, the signal processing device (170) can control, in the partial shading mode, the potential difference between some of the first pattern electrodes (425c) and other some of the first pattern electrodes (425d) within the second region (ARmb) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0235] Meanwhile, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) with an increasing pulse width to some of the first pattern electrodes (425c) within the second region (ARmb) in the partial shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) with an increasing pulse width to other some of the first pattern electrodes (425d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0236] Similarly, the signal processing device (170) can be controlled to sequentially apply a positive third pulse voltage (PSc) with an increasing pulse width to some of the second pattern electrodes (415c) within the second region (ARmb) in the partial shading mode, and to sequentially apply a negative fourth pulse voltage (PSd) with an increasing pulse width to other some of the second pattern electrodes (415d). Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0237] Next, Figure 8d illustrates another example of an electrophoretic shading device (180mb).

[0238] Referring to the drawing, the electrophoretic shading device (180mb) of FIG. 8d is similar to the electrophoretic shading device (180m) of FIG. 8a, but differs in that the second pattern electrodes (415a to 415e) are arranged on the upper side and the first pattern electrodes (425a to 425e) are arranged on the lower side.

[0239] Meanwhile, the signal processing device (170), when switching to the partial shading mode, controls the formation of an electric field (FDa) between the first pattern electrodes (425a, 425b) on the lower side and the second pattern electrodes (415a, 415b) on the upper side within the first region (ARma), which is a part of the display (180), and controls the formation of an electric field (FDc) between the first pattern electrodes (425c, 425d) on the lower side within the second region (ARmb), which is another part of the display (180), and controls the formation of an electric field between the second pattern electrodes (415c, 415d) on the upper side within the second region (ARmb). Accordingly, the electrophoretic shading device (180) can be driven in various modes.

[0240] As shown in (b) of FIG. 8c, in the partial shading mode, electrophoretic ink (430a) may be placed between the first pattern electrode (425a, 425b) on the lower side and the second pattern electrode (415a, 415b) on the upper side within the first region (ARma), and electrophoretic ink (430t) may be placed between the first pattern electrode (425c, 425d) on the lower side within the second region (ARmb) and between the second pattern electrode (415c, 415d) on the upper side within the second region (ARmb).

[0241] Meanwhile, the signal processing device (170) can control the formation of an electric field (FDd) between the first pattern electrode (425e) on the lower side and the second pattern electrode (415e) on the upper side within the third area (ARmc), which is another area of ​​the display (180), in the partial shading mode.

[0242] Figure 8e illustrates an example of a transparent mode in an electrophoretic shading device (180m) in partial shading mode.

[0243] Referring to the drawing, the electric shading device (180m) can operate in a partial shading mode, with the first region (ARma) operating in a transparent mode, the second region (ARmb) operating in a shading mode, and the third region (Armc) operating in a transparent mode.

[0244] Referring to FIGS. 8A to 8E, the signal processing device (170) according to the embodiment of the present disclosure, when switching to a partial light-blocking mode, controls to apply a positive first pulse voltage (PSa) to the first pattern electrodes (425a, 425b) in the first region (ARma), which is a part of the display (180), and to apply a negative second pulse voltage (PSb) to the second pattern electrodes (415a to 415e), and to apply a positive third pulse voltage (PSc) to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425c, 425d) in the second region (ARmb), which is another part of the display (180), and to apply a negative fourth pulse voltage (PSc) to other parts of the first pattern electrodes (425b, 425d) adjacent to some of the first pattern electrodes (425a, 425c, 425e). Control to apply voltage (PSd).

[0245] Accordingly, the mode conversion speed to partial shading mode in the electric shading device (180) can be improved. Furthermore, the response speed when the electric shading device (180) operates in partial shading mode can be improved.

[0246] Figures 9a to 9c illustrate other examples of partial shading modes of an electrophoretic shading device.

[0247] Referring to the drawing, Fig. 9a is another example of a partial shading mode, which is similar to Fig. 8a, but differs in that only the first region (ARna) and the second region (ARnb) correspond, and the third region (ARmc) does not exist.

[0248] Meanwhile, the signal processing device (170) can control, in the partial shading mode, an electric field (FDa) to be formed between the first pattern electrodes (425a, 425b) and the second pattern electrodes (415a, 415b) in the first region (ARna), which is a part of the display (180), and an electric field (FDc) to be formed between the first pattern electrodes (425c, 425d) in the second region (ARnb), which is another part of the display (180), and an electric field to be formed between the second pattern electrodes (415c, 415d) in the second region (ARnb). Accordingly, the electrophoretic shading device (180) can be driven in various modes.

[0249] Accordingly, as shown in (b) of FIG. 9a, in the partial shading mode, electrophoretic ink (430a) may be placed between the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the first region (ARna), and electrophoretic ink (430t) may be placed between the first pattern electrode (425c, 425d) in the second region (ARnb) and between the second pattern electrode (415c, 415d) in the second region (ARnb).

[0250] Accordingly, the light transmittance can be maintained at 60% or more in the first region (ARna), which is a transparent mode, and the light transmittance can be maintained at 10% or less in the second region (ARnb), which is a light-shielding mode.

[0251] Meanwhile, the pulse voltage applied to the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the first region (ARna) of the partial shading mode of FIG. 9a can be exemplified as in FIG. 8b.

[0252] That is, the signal processing device (170) can control, in the partial shading mode, to apply a positive first pulse voltage (PSa) to a first pattern electrode (425a, 425b) within a first region (ARna), which is a part of the display (180), and to apply a negative second pulse voltage (PSb) to a second pattern electrode (415a, 415b) within the first region (ARna).

[0253] Meanwhile, the signal processing device (170) can control, in the partial shading mode, the potential difference between the first pattern electrode (425a, 425b) within the first region (ARna), which is a partial region of the display (180), and the second pattern electrode (415a, 415b) within the first region (ARna) to sequentially decrease. Accordingly, the response speed of the electrophoretic shading device (180) can be improved.

[0254] Meanwhile, the pulse voltage applied to the first pattern electrode (425a, 425b) and the second pattern electrode (415a, 415b) in the second region (ARnb) of the partial shading mode of FIG. 9a can be exemplified as in FIG. 8c.

[0255] That is, the signal processing device (170) can control, in the partial shading mode, to apply a positive third pulse voltage (PSc) to some of the first pattern electrodes (425a, 425c, 425e) among the first pattern electrodes (425c, 425d) in the second area (ARnb), which is another part of the display (180), and to apply a negative fourth pulse voltage (PSd) to some of the first pattern electrodes (425b, 425d) adjacent to some of the first pattern electrodes (425a, 425c, 425e).

[0256] Meanwhile, the signal processing device (170) can control, in the partial shading mode, to apply a fifth pulse voltage (PSc) of positive polarity to some of the second pattern electrodes (415a, 415c, 415e) among the second pattern electrodes (415c, 415d) within the second region (ARnb), and to apply a sixth pulse voltage (PSd) of negative polarity to some of the second pattern electrodes (415a, 415c, 415e) adjacent to some of the second pattern electrodes (415a, 415c, 415e). Accordingly, the mode conversion speed in the electrophoretic shading device (180) can be improved.

[0257] Next, Fig. 9b illustrates another example of an electrophoretic shading device (180mb).

[0258] Referring to the drawing, the electrophoretic shading device (180mb) of FIG. 9b is similar to the electrophoretic shading device (180m) of FIG. 9a, but differs in that the second pattern electrodes (415a to 415e) are arranged on the upper side and the first pattern electrodes (425a to 425e) are arranged on the lower side.

[0259] Figure 9c illustrates image display by partial shading mode.

[0260] Referring to the drawing, the electric shading device (180m) can operate in a partial shading mode, with the first region (ARna) operating in a transparent mode and the second region (ARnb) operating in a shading mode.

[0261] Accordingly, it becomes possible to display images only in certain areas depending on the purpose while driving the vehicle.

[0262] Referring to FIGS. 7a to 9c, the signal processing device (170) can control the potential difference between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) to be greater during daytime driving than during nighttime driving.

[0263] For example, the signal processing device (170) can control the electric field formation between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) in transparent mode or partial shading mode so that the potential difference between the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) becomes larger during daytime driving than during nighttime driving.

[0264] Accordingly, during daytime driving when the influence of external light is greater, the transmittance of the electrophoretic shading device (180m) increases, and as a result, a higher brightness image can be displayed through the transparent display first display (180), thereby further improving visibility. As a result, the electrophoretic shading device (180) can be operated in response to various driving environments.

[0265] As another example, the signal processing device (170) can control, in the shading mode, the electric field formed between some of the adjacent first pattern electrodes (425a, 425c, 425e) and other some of the first pattern electrodes (425b, 425db) to be greater during daytime driving than during nighttime driving. Accordingly, shading can be further strengthened during daytime driving when the influence of external light is greater.

[0266] Meanwhile, the signal processing device (170) can control the level of the pulse voltage applied to the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) to vary based on the illumination around the vehicle.

[0267] For example, the signal processing device (170) can control the potential difference between the pulse voltages applied to the first pattern electrodes (425a to 425e) and the second pattern electrodes (415a to 415e) to increase as the illumination around the vehicle increases.

[0268] Accordingly, visibility can be further improved in response to the surrounding lighting conditions of the vehicle. Ultimately, the electric shading device (180) can be operated in response to various driving environments.

[0269] FIGS. 10A to 16B are drawings for reference in explaining various operations of a transmissive display including the electrophoretic shading device of FIG. 4 or FIG. 5 and the first display.

[0270] First, FIG. 10a illustrates that a vehicle information image (910) is displayed in a first area (ARa) of a transparent display (180b), and a map image (930) is displayed in a second area (ARb).

[0271] Referring to the drawing, the electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0272] For example, the signal processing device (170) can control the vehicle information image (910) to be displayed in the first area (ARa) of the transparent display (180b) and the map image (930) to be displayed in the second area (ARb) during daytime driving.

[0273] At this time, since the difference in brightness between the vehicle information image (910) and the map image (930) is less than a predetermined value, a glare phenomenon due to the difference in brightness between the vehicle information image (910) and the map image (930) does not occur during daytime driving.

[0274] Next, FIG. 10b illustrates that a vehicle information image (910) is displayed in a first area (ARa) of a transparent display (180b), and a camera-based image (940) is displayed in a second area (ARb).

[0275] Referring to the drawing, the electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0276] For example, when the vehicle is parked after driving during the day, the signal processing device (170) can control the map image (930) displayed in the second area (ARb) to be switched to display a camera-based image while the vehicle information image (910) is displayed in the first area (ARa) of the transparent display (180b).

[0277] That is, the signal processing device (170) can control the vehicle information image (910) to be displayed in the first area (ARa) of the transparent display (180b) and the camera-based image (940) to be displayed in the second area (ARb) when the vehicle is parked during the daytime.

[0278] At this time, since the difference in brightness between the vehicle information image (910) and the camera-based image (940) is less than a predetermined value, a glare phenomenon due to the difference in brightness between the vehicle information image (910) and the camera-based image (940) does not occur during daytime parking.

[0279] Meanwhile, the signal processing device (170) can control the display of camera-related menu information (935) in a portion (ARb1) of the second portion (ARb), and the display of a camera-based image (940) including a camera image (942) and an around-view image (944) based on the camera image in another portion (ARb2) of the second portion (ARb). Accordingly, a graphical user interface for parking convenience can be provided.

[0280] Next, FIG. 10c illustrates that a vehicle information image (910b) is displayed in a first area (ARa) of a transparent display (180b), and a map image (930b) is displayed in a second area (ARb).

[0281] Referring to the drawing, the electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0282] For example, the signal processing device (170) can control the vehicle information image (910b) to be displayed in the first area (ARa) of the transparent display (180b) and the map image (930b) to be displayed in the second area (ARb) during night driving.

[0283] Meanwhile, the signal processing device (170) can control the brightness of the vehicle information image (910b) displayed in the first area (ARa) of the transparent display (180b) during night driving to be lower than the brightness of the vehicle information image (910) displayed during daytime driving.

[0284] Meanwhile, the signal processing device (170) can control the brightness of the map image (930b) displayed in the second area (ARb) of the transparent display (180b) during night driving to be lower than the brightness of the map image (930) displayed during day driving.

[0285] At this time, since the difference in brightness between the vehicle information image (910b) and the map image (930b) is less than a predetermined value, the glare phenomenon due to the difference in brightness between the vehicle information image (910b) and the map image (930b) does not occur during night driving.

[0286] Next, FIG. 10d illustrates that a vehicle information image (910b) is displayed in a first area (ARa) of a transparent display (180b), and a camera-based image (940b) is displayed in a second area (ARb).

[0287] Referring to the drawing, the electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0288] For example, when the vehicle is parked after driving at night, the signal processing device (170) can control the map image (930b) displayed in the second area (ARb) to be switched to display a camera-based image while the vehicle information image (910b) is displayed in the first area (ARa) of the transparent display (180b).

[0289] That is, the signal processing device (170) can control the vehicle information image (910b) to be displayed in the first area (ARa) of the transparent display (180b) and the camera-based image (940b) to be displayed in the second area (ARb) when parking at night.

[0290] At this time, the difference in brightness between the vehicle information image (910b) and the camera-based image (940b) may be greater than a predetermined value.

[0291] For example, if you are parking in a bright parking space rather than a dark parking space during night parking, the brightness of the camera-based image (940b) may be significantly higher than the brightness of the vehicle information image (910b).

[0292] Due to this difference in luminance, glare may occur in camera-based images (940b).

[0293] Accordingly, the signal processing device (170) according to the embodiment of the present disclosure, when a vehicle information image is displayed on a first area (ARa) of a display (180), and a difference in brightness between the vehicle information image and a camera-based image to be displayed on a second area (ARb) of the display (180) is greater than a predetermined value, changes the brightness of the vehicle information image or the camera-based image.

[0294] For example, the signal processing device (170) can control the brightness of the camera-based image to increase in steps when the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value during night driving.

[0295] Figure 11 is a diagram illustrating a stepwise increase in the brightness of a camera-based image in an electrophoretic display.

[0296] The electrophoretic shading device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARc), the second area (ARd), and the third area (ARn), respectively.

[0297] Referring to the drawing, the signal processing device (170) can be controlled to display a vehicle information image (910c) in the first area (ARc) of the transparent display (180b) and to display a map image (940c1) in the second area (ARd) at a first point in time, as shown in (a) of FIG. 11.

[0298] Meanwhile, the signal processing device (170) can be controlled to display a predetermined image (935c) between the first area (ARc) and the second area (ARd).

[0299] For example, the signal processing device (170) can control the brightness of the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) to be 5%, 5%, and 5%, respectively, at the first point in time, as shown in (a) of FIG. 11.

[0300] Accordingly, the transparent display (180b) can display images (910c, 935c, 940c1) with a brightness of 5%, 5%, and 5% in the first region (ARc), the third region (ARn), and the second region (ARd), respectively.

[0301] Meanwhile, the signal processing device (170) displays a vehicle information image (910c) in the first area (ARc) of the display (180b) and displays a map image (940c1) in the second area (ARd), and when the camera is activated and the image displayed in the second area (ARd) is switched to a camera-based image, it determines whether the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value.

[0302] For example, if the brightness of the vehicle information image displayed in the first area (ARc) corresponds to 5% and the brightness of the camera-based image to be displayed in the second area (ARd) corresponds to approximately 23%, and since it is greater than a predetermined value (e.g., 15%), the signal processing device (170) can vary the brightness of the vehicle information image or the camera-based image to prevent glare.

[0303] Specifically, the signal processing device (170) can control the brightness of the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) to be 5%, 5%, and 13%, respectively, at the second point in time, as shown in (b) of FIG. 11.

[0304] Accordingly, the transparent display (180b) can display images (910c, 935c, 940c2) with brightness of 5%, 5%, and 13% in the first region (ARc), the third region (ARn), and the second region (ARd), respectively.

[0305] Next, the signal processing device (170) can control the brightness of the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) to be 5%, 5%, and 18%, respectively, at the third point in time, as shown in (c) of FIG. 11.

[0306] Accordingly, the transparent display (180b) can display images (910c, 935c, 940c3) with brightness of 5%, 5%, and 18% in the first region (ARc), the third region (ARn), and the second region (ARd), respectively.

[0307] Next, the signal processing device (170) can control the brightness of the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) to be 5%, 5%, and 23%, respectively, at the fourth time point, as shown in (d) of FIG. 11.

[0308] Accordingly, the transparent display (180b) can display images (910c, 935c, 940c4) with brightness of 5%, 5%, and 23% in the first region (ARc), the third region (ARn), and the second region (ARd), respectively.

[0309] Finally, the signal processing device (170) can be controlled to display images (910c, 935c, 940c1) with luminances of 5%, 5%, and 5% in the first region (ARc), the third region (ARn), and the second region (ARd), as shown in (a) of FIG. 11, and then, instead of immediately displaying images (910c, 935c, 940c4) with luminances of 5%, 5%, and 23%, as shown in (d) of FIG. 11, through the steps of (b) of FIG. 11 and (c) of FIG. 12, to display images (910c, 935c, 940c4) with luminances of 5%, 5%, and 23%, respectively, as shown in (d) of FIG. 11. Accordingly, glare can be reduced.

[0310] According to the above, the signal processing device (170) can vary the brightness of the vehicle information image or the camera-based image displayed on the transparent display (180b) when the difference in brightness between the vehicle information image of the first area (ARa) of the display (180b) and the camera-based image to be displayed on the second area (ARb) of the display (180) is greater than a predetermined value.

[0311] Meanwhile, the signal processing device (170) can control the brightness of the camera-based image displayed on the transparent display (180b) to increase in steps when the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value during night driving.

[0312] Meanwhile, the signal processing device (170) can control the brightness of the camera-based image displayed on the transparent display (180b) to increase stepwise when the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value and the brightness of the camera-based image is higher than the brightness of the vehicle information image.

[0313] FIG. 12a illustrates that a vehicle information image (910b) is displayed in a first area (ARa) of a transparent display (180b), and a map image (930b) is displayed in a second area (ARb).

[0314] Referring to the drawing, the electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0315] For example, the signal processing device (170) can control the vehicle information image (910b) to be displayed in the first area (ARa) of the transparent display (180b) and the map image (930b) to be displayed in the second area (ARb) during night driving.

[0316] FIG. 12b illustrates that a camera-based image (940b) is displayed in a first area (ARa) of a transparent display (180b), and a vehicle information image (910b) is displayed in a second area (ARb).

[0317] The electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARa) and the second area (ARb), respectively.

[0318] Referring to the drawing, the signal processing device (170) can control the display so that a camera-based image (940b) is displayed in the first area (ARa) of the transparent display (180b) and a vehicle information image (910b) is displayed in the second area (Arb) when the vehicle is parked after driving at night.

[0319] Meanwhile, unlike the drawing, the signal processing device (170) can control the display of a camera-based image (940b) in the first area (ARa) of the transparent display (180b) and the display of a map image (930b) in the second area (Arb) when the vehicle is parked after driving at night.

[0320] At this time, the difference in brightness between the camera-based image (940b) and the vehicle information image (910b) may be greater than a predetermined value.

[0321] For example, if you are parking in a bright parking space rather than a dark parking space during night parking, the brightness of the camera-based image (940b) may be significantly higher than the brightness of the vehicle information image (910b).

[0322] Accordingly, a signal processing device (170) according to another embodiment of the present disclosure, as shown in FIG. 12a, displays a vehicle information image (910b) in a first area (ARa) of a display (180a) and displays a map image (920b) in a second area (ARb), and, when the difference in brightness between a camera-based image to be displayed in place of the vehicle information image in the first area (ARa) and the map image or vehicle information image is greater than a predetermined value, changes the brightness of the camera-based image, map image, or vehicle information image.

[0323] That is, when the difference in brightness between the map image (920b) and the camera-based image is greater than a predetermined value during night driving, the signal processing device (170) can control the display of a camera-based image with gradually increasing brightness, rather than displaying the camera-based image (940b) directly in the first area (ARa) of the transmissive display (180b), as shown in FIG. 12b. Accordingly, glare due to the difference in brightness in the display (180a) can be reduced.

[0324] Figure 13 is a diagram illustrating a stepwise increase in the brightness of a camera-based image in an electrophoretic display.

[0325] The electrophoretic light-blocking device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARc) and the second area (ARd), respectively.

[0326] Referring to the drawing, the signal processing device (170) can be controlled to display a camera-based image (940c1) in the first area (ARc) of the transparent display (180b) and to display a vehicle information image (910c) in the second area (ARd), as shown in (a) of FIG. 13, at a first point in time.

[0327] For example, the signal processing device (170) can control the brightness of the first area (ARc) and the second area (ARd) of the transparent display (180b) to be 5% and 5%, respectively, at the first point in time, as shown in (a) of FIG. 13.

[0328] Accordingly, the transparent display (180b) can display images (940c1, 910c) with a brightness of 5% and 5% in the first area (ARc) and the second area (ARd), respectively.

[0329] Meanwhile, the signal processing device (170) can control the brightness of the first area (ARc) and the second area (ARd) of the transparent display (180b) to be 13% and 5%, respectively, at the second time point, as shown in (b) of FIG. 13.

[0330] Accordingly, the transparent display (180b) can display images (940c2, 910c) with a brightness of 13% and 5% in the first area (ARc) and the second area (ARd), respectively.

[0331] Next, the signal processing device (170) can control the brightness of the first area (ARc) and the second area (ARd) of the transparent display (180b) to be 18% and 5%, respectively, at the third point in time, as shown in (c) of FIG. 13.

[0332] Accordingly, the transparent display (180b) can display images (940c3, 910c) with a brightness of 18% and 5% in the first area (ARc) and the second area (ARd), respectively.

[0333] Next, the signal processing device (170) can control the brightness of the first area (ARc) and the second area (ARd) of the transparent display (180b) to be 23% and 5%, respectively, at the fourth time point, as shown in (d) of FIG. 13.

[0334] Accordingly, the transparent display (180b) can display images (940c4, 910c) with a brightness of 23% and 5% in the first area (ARc) and the second area (ARd), respectively.

[0335] Ultimately, the signal processing device (170) can be controlled to display images (940c1, 910c) with luminances of 5% and 5% in the first area (ARc) and the second area (ARd), respectively, as in (a) of Fig. 13, and then display images (940c4, 910c) with luminances of 23% and 4%, respectively, as in (d) of Fig. 13, rather than immediately displaying images (940c4, 910c) with luminances of 23% and 4%, respectively, as in (d) of Fig. 13, through the steps of (b) and (c) of Fig. 13. Accordingly, glare can be reduced.

[0336] According to the above, the signal processing device (170) can vary the brightness of the vehicle information image or the camera-based image displayed on the transparent display (180b) when the difference in brightness between the camera-based image to be displayed on the first area (ARa) of the display (180b) and the vehicle information image to be displayed on the second area (ARb) of the display (180) is greater than a predetermined value.

[0337] Meanwhile, the signal processing device (170) can control the brightness of the camera-based image displayed on the transparent display (180b) to increase in steps when the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value during night driving.

[0338] Meanwhile, the signal processing device (170) can control the brightness of the camera-based image displayed on the transparent display (180b) to increase in steps when the difference in brightness between the vehicle information image and the camera-based image is greater than a predetermined value and the brightness of the camera-based image is higher than the brightness of the vehicle information image. Accordingly, glare caused by the brightness difference on the display (180b) can be reduced.

[0339] Fig. 14a is a drawing showing an example of luminance variation of a portion of each area in a transparent display (180b).

[0340] The electrophoretic shading device (180m) within the transparent display (180b) operates in a transparent mode, and the first display (180) can display images in the first area (ARc), the second area (ARd), and the third area (ARn), respectively.

[0341] Referring to the drawing, the signal processing device (170) can control, as shown in (a) of FIG. 14a, to display a vehicle information image (910b), a predetermined image (937b1), and a map image (1540b1) with a brightness of 5%, 5%, and 5%, respectively, in the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) at a first point in time.

[0342] Next, the signal processing device (170) can control, as shown in (b) of FIG. 14a, to display a vehicle information image (910b), a predetermined image (937b4), and a map image (1540b4) with a brightness of 5%, 23%, and 23%, respectively, in the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) after the first point in time.

[0343] At this time, the signal processing device (170) can control the brightness of the predetermined image (937b4) and the map image (1540b4) displayed in the third area (ARn) and the second area (ARd) to increase stepwise, without directly switching from (a) of FIG. 14a to (b) of FIG. 14a.

[0344] Fig. 14b is a drawing showing another example of luminance variation of a portion of each area in a transparent display (180b).

[0345] Referring to the drawing, the signal processing device (170) can control, as shown in (a) of FIG. 14b, to display a vehicle start-off image (1610c1) with a brightness of 5% in the first area (ARc) among the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) at a first point in time.

[0346] Next, the signal processing device (170) can control the display of vehicle charging information images (1610c4, 1635c4, 1640c4) having a brightness of 23%, 23%, and 23%, respectively, in the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b), when the vehicle engine is turned on after the first time point, as shown in (b) of FIG. 14b.

[0347] At this time, the signal processing device (170) can control the brightness of the vehicle charging information images (1610c1, 1635c1, 1640c1) displayed in the first area (ARc), the third area (ARn), and the second area (ARd) to increase in steps, without directly switching from (a) of FIG. 14b to (b) of FIG. 14b.

[0348] The electrophoretic shading device (180m) within the transparent display (180b) can operate in a partial shading mode or a transparent mode.

[0349] For example, as in (a) of FIG. 14b, at the first point in time, the first region (ARc) within the electrophoretic shading device (180m) can operate in a transparent mode, and the third region (ARn) and the second region (ARd) within the electrophoretic shading device (180m) can operate in a shading mode.

[0350] Meanwhile, as in (b) of Fig. 14b, after the first point in time, the electrophoretic shading device (180m) can operate in a transparent mode.

[0351] FIG. 14c is a drawing showing another example of luminance variation of a portion of each area in a transparent display (180b).

[0352] Referring to the drawing, the signal processing device (170) can control, as shown in (a) of FIG. 14c, to display an engine-off image (1710c1) having a vehicle brightness of 5% in the first area (ARc) among the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) at a first point in time.

[0353] Next, the signal processing device (170) can control the display of a vehicle information image (1710c4), a predetermined image (1735c4), and a map image (1740c4) with a brightness of 5%, 5%, and 5%, respectively, in the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b), when the vehicle engine is turned on after the first time point, as shown in (b) of FIG. 14c.

[0354] At this time, the signal processing device (170) can be controlled to immediately switch from (a) of FIG. 14c to (b) of FIG. 14c.

[0355] The electrophoretic shading device (180m) within the transparent display (180b) can operate in a partial shading mode or a transparent mode.

[0356] For example, as in (a) of Fig. 14c, at the first point in time, the first region (ARc) within the electrophoretic shading device (180m) can operate in a transparent mode, and the third region (ARn) and the second region (ARd) within the electrophoretic shading device (180m) can operate in a shading mode.

[0357] Meanwhile, as shown in (b) of Fig. 14c, after the first point in time, the electrophoretic shading device (180m) can operate in a transparent mode.

[0358] FIG. 14d is a drawing showing another example of luminance variation of a portion of each area in a transparent display (180b).

[0359] Referring to the drawing, the signal processing device (190) can control, as shown in (a) of FIG. 14d, to display a vehicle start-off image (1810c1) with a brightness of 5% in the first area (ARc) among the first area (ARc), the third area (ARn), and the second area (ARd) of the transparent display (180b) at a first point in time.

[0360] Next, the signal processing device (190) can control the display of a vehicle charging information image (1810c4) and a clock image (1835c4) with a brightness of 5% and 23%, respectively, in the first area (ARc) and the third area (ARn) of the transparent display (180b) when the vehicle engine is turned on after the first time point, as shown in (b) of FIG. 14d.

[0361] At this time, the signal processing device (190) can control the brightness of the clock image (1835c4) displayed in the third area (Arn) among the first area (ARc), the third area (ARn), and the second area (ARd) to increase in steps, without directly switching from (a) of FIG. 14d to (b) of FIG. 14d.

[0362] The electrophoretic shading device (180m) within the transparent display (180b) can operate in a partial shading mode or a transparent mode.

[0363] For example, as in (a) of FIG. 14d, at the first point in time, the first region (ARc) within the electrophoretic shading device (180m) can operate in a transparent mode, and the third region (ARn) and the second region (ARd) within the electrophoretic shading device (180m) can operate in a shading mode.

[0364] Meanwhile, as shown in (b) of FIG. 14d, after the first point in time, the first region (ARc) and the third region (ARn) within the electrophoretic shading device (180m) can operate in a transparent mode, and the second region (ARd) within the electrophoretic shading device (180m) can operate in a shading mode.

[0365] FIG. 15 is an example of an internal block diagram of a signal processing device according to an embodiment of the present disclosure.

[0366] Referring to the drawings, a vehicle display device (1000b) according to one embodiment of the present disclosure includes a signal processing device (170).

[0367] In the drawing, a signal processing device (170a) executes a hypervisor (505) and, on the hypervisor (505), executes a plurality of virtual machines (820 to 850) according to the automotive safety integrity level (Automotive SIL; ASIL).

[0368] Meanwhile, a signal processing device (170) according to one embodiment of the present disclosure may be equipped with a plurality of processor cores (CR1 to CRn, MR).

[0369] Meanwhile, some (CR1 to CRn) of the multiple processor cores (CR1 to CRn, MR) operate based on a hypervisor (505), and the hypervisor can execute multiple virtual machines (820 to 850).

[0370] Meanwhile, some other (MR) of the plurality of processor cores (CR1 to CRn, MR) can execute an operating system (805a) corresponding to the first safety level, which is the highest safety level, such as ASIL D, without executing a hypervisor (505), and execute a fourth virtual machine (840) on the operating system (805a).

[0371] Meanwhile, the fourth virtual machine (840) can execute an application corresponding to a first safety level, such as ASIL D, or a microservice (843) corresponding to an application corresponding to the first safety level. Accordingly, the application or microservice (843) corresponding to the first safety level can be stably performed.

[0372] Meanwhile, among the plurality of processor cores (CR1 to CRn, MR), the first processor core (CR1) can execute a hypervisor (505), execute an operating system (805b) on the hypervisor (505), and execute a first virtual machine (850) on the operating system (805b).

[0373] Meanwhile, the first virtual machine (850) can execute an application corresponding to a second safety level, such as ASIL B, or a microservice (853a) corresponding to an application corresponding to the second safety level. Accordingly, the application or microservice (853a) corresponding to the second safety level can be stably performed.

[0374] Meanwhile, the second safety level may be a lower safety level than the first safety level.

[0375] Meanwhile, among the plurality of processor cores (CR1 to CRn, MR), the second processor core (CR2) and the third processor core (CR3) can execute a hypervisor (505), execute an operating system (805c) corresponding to a second safety level such as ASIL B on the hypervisor (505), and execute a second virtualization machine (830) on the operating system (805c).

[0376] Meanwhile, the second virtual machine (830) can execute a third application corresponding to a second safety level, such as ASIL B, or a microservice (833a to 833c) corresponding to the third application corresponding to the second safety level, on an operating system (805c) corresponding to a second safety level. Accordingly, the application or microservice (833a to 833c) corresponding to the second safety level can be stably performed.

[0377] Meanwhile, among the plurality of processor cores (CR1 to CRn, MR), the remaining processor cores (CR4 to CRn) can execute a hypervisor (505), execute an operating system (805d) corresponding to a third safety level such as QM on the hypervisor (505), and execute a third virtualization machine (820) on the operating system (805d).

[0378] Meanwhile, the third virtual machine (820) can execute a fourth application corresponding to the third safety level, such as QM, or a microservice (823a to 823b) corresponding to the fourth application, on an operating system (805d) corresponding to the third safety level, which is lower than the second safety level. Accordingly, the application or microservice (823a to 823b) corresponding to the third safety level can be stably performed.

[0379] FIGS. 16A and 16B are drawings for reference in the description of the operation of the signal processing device of FIG. 15.

[0380] Figure 16a illustrates displaying an image in each area of ​​a transparent display (180b).

[0381] Referring to the drawing, the signal processing device (170) can display a vehicle information image in a first area (ARc) of the display (180b) and display a camera-based image in a second area.

[0382] Meanwhile, the signal processing device (170) can control a second layer (2010c) including a vehicle warning image to be overlaid on a first layer (2020c) including surrounding vehicle information when displaying a vehicle information image in the first area (ARc) of the display (180b).

[0383] Meanwhile, the signal processing device (170) can control the safety level of the first layer (2020c) including surrounding vehicle information and the safety level of the second layer (2010c) including vehicle warning images to be different.

[0384] In particular, the signal processing device (170) can control the safety level of the second layer (2010c) including the vehicle warning image to be higher than the safety level of the first layer (2020c) including the surrounding vehicle information.

[0385] Specifically, the first layer (2020c) including surrounding vehicle information may be generated by the fourth virtualization machine (840) of the signal processing device (170) in response to the first safety level, and the second layer (2010c) including the vehicle warning image may be generated by the first virtualization machine (850) or the second virtualization machine (830) in response to the second safety level. Accordingly, layers may be displayed separately according to the safety level.

[0386] Meanwhile, the signal processing device (170) can control the first layer (2020c) and the second layer (2010c) to be overlaid on the third layer (2030c) including vehicle speed information, etc.

[0387] Meanwhile, the signal processing device (170) can control a fifth layer (2040c) including camera-related menu information to be overlaid on a fourth layer (2050c) including camera-based images such as camera images and around-view images when displaying camera-based images in the second area (ARd) of the display (180b).

[0388] Meanwhile, the fourth layer (2050c) including camera-based images may be generated by the second virtualization machine (830) of the signal processing device (170), and the fifth layer (2040c) including camera-related menu information may be generated by the third virtualization machine (840). Accordingly, the layers can be displayed separately.

[0389] Figure 16b is a diagram illustrating an operating system for multiple displays.

[0390] Referring to the drawing, the signal processing device (170) executes a first operating system (OSa) for the first display (180) and can control the display of corresponding images in the first area (ARa), the third area (ARm), and the second area (ARb) through a plurality of virtual machines, etc.

[0391] Meanwhile, the signal processing device (170) can control the second display (180h) to execute a second operating system (OSh) and display an image including vehicle speed information, etc.

[0392] Meanwhile, the first operating system (OSa) and the second operating system (OSh) may be the same as in the drawing, but are not limited thereto, and may be different from each other.

[0393] Meanwhile, 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. In a signal processing device, Controlling an electrophoretic light-shielding device comprising a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite to the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, A signal processing device that controls, when switching to a shading mode, to apply a positive pulse voltage to some of the first pattern electrodes and to apply a negative pulse voltage to other first pattern electrodes adjacent to some of the first pattern electrodes.

2. In paragraph 1, A signal processing device that controls, in the above shading mode, to sequentially apply a positive pulse voltage having a smaller size to some of the first pattern electrodes and to sequentially apply a negative pulse voltage having a smaller size to some of the other first pattern electrodes.

3. In paragraph 1, A signal processing device that controls, in the above shading mode, to sequentially apply a positive pulse voltage with an increasing pulse width to some of the first pattern electrodes, and to sequentially apply a negative pulse voltage with an increasing pulse width to some of the other first pattern electrodes.

4. In paragraph 1, A signal processing device that controls the potential difference between the first pattern electrodes of some of the above and the first pattern electrodes of other parts of the above in the above shading mode to sequentially decrease.

5. In paragraph 1, A signal processing device that controls, in the above shading mode, to apply a positive pulse voltage to some of the second pattern electrodes and to apply a negative pulse voltage to some of the other second pattern electrodes.

6. In paragraph 5, A signal processing device that controls, in the above-described shading mode, to sequentially apply a positive pulse voltage having a smaller size to some of the second pattern electrodes, and to sequentially apply a negative pulse voltage having a smaller size to some of the other second pattern electrodes.

7. In paragraph 5, A signal processing device that controls, in the above-described shading mode, to sequentially apply a positive pulse voltage with an increasing pulse width to some of the second pattern electrodes, and to sequentially apply a negative pulse voltage with an increasing pulse width to some of the other second pattern electrodes.

8. In paragraph 5, A signal processing device that controls the potential difference between some of the second pattern electrodes and other some of the second pattern electrodes in the above shading mode to sequentially decrease.

9. In paragraph 1, A signal processing device that controls, in the above-mentioned shading mode, an electric field to be formed between the first pattern electrodes and an electric field to be formed between the second pattern electrodes.

10. In paragraph 1, A signal processing device that controls, in transparent mode, to apply a positive pulse voltage to the first pattern electrode and to apply a negative pulse voltage to the second pattern electrode.

11. In paragraph 10, A signal processing device that controls, in the above transparent mode, to sequentially apply a positive pulse voltage having a smaller size to the first pattern electrode and to sequentially apply a negative pulse voltage having a smaller size to the second pattern electrode.

12. In paragraph 10, A signal processing device that controls, in the above transparent mode, to sequentially apply a positive pulse voltage with an increasing pulse width to the first pattern electrode and to sequentially apply a negative second pulse voltage with an increasing pulse width to the second pattern electrode.

13. In paragraph 10, A signal processing device that controls the potential difference between the first pattern electrode and the second pattern electrode to sequentially decrease in the above transparent mode.

14. In paragraph 10, A signal processing device that controls an electric field to be formed between the first pattern electrode and the second pattern electrode in the above transparent mode.

15. In paragraph 1, In the partial shading mode, a positive pulse voltage is applied to the first pattern electrode within the first region, which is a part of the shading device, and a negative pulse voltage is applied to the second pattern electrode. A signal processing device that controls, in the partial shading mode, to apply a positive pulse voltage to some of the first pattern electrodes in a second area, which is another part of the shading device, and to apply a negative pulse voltage to other part of the first pattern electrodes adjacent to the first pattern electrodes of the part.

16. In paragraph 15, A signal processing device that controls, in the partial shading mode, to apply a positive pulse voltage to some of the second pattern electrodes in the second area, and to apply a negative pulse voltage to other some of the second pattern electrodes adjacent to the some of the second pattern electrodes.

17. In paragraph 1, The above signal processing device, A signal processing device that controls the potential difference between the first pattern electrode and the second pattern electrode to be greater during daytime driving than during nighttime driving.

18. In paragraph 1, A signal processing device further controlling a transparent display device or image projection device adjacent to the above-mentioned electric shading device.

19. In a signal processing device, The above signal processing device, Controlling an electrophoretic light-shielding device comprising a plurality of first pattern electrodes, a plurality of second pattern electrodes arranged opposite to the first pattern electrodes, and electrophoretic ink arranged between the first pattern electrodes and the second pattern electrodes, When switching to a partial shading mode, a positive pulse voltage is applied to the first pattern electrode within a first region, which is a part of the shading device, and a negative pulse voltage is applied to the second pattern electrode. A signal processing device that controls, in the partial shading mode, to apply a positive pulse voltage to some of the first pattern electrodes in a second area, which is another part of the shading device, and to apply a negative pulse voltage to other parts of the first pattern electrodes adjacent to the first pattern electrodes of the part.

20. An electrophoretic light-shielding device having a signal processing device according to any one of claims 1 to 19.

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