KR102489381B1 - Display apparatus and contorlling method thereof - Google Patents

Abstract

According to one aspect of the disclosure, a display and a control method for improving a phenomenon in which an image is seen curved even after a pivot function is improved and a user's sense of immersion is provided by reducing a user's visible distortion through image processing.
A display device according to an exemplary embodiment includes a display panel displaying an image and having a preset curvature; a pivot detector detecting whether the display panel is pivoted; and a controller configured to calculate a sense of image processing depth based on the curvature and adjust the image based on the calculated image processing depth when the pivot sensor detects the pivot.

Description

Display device and its control method {DISPLAY APPARATUS AND CONTORLLING METHOD THEREOF}

One aspect disclosed relates to a curved display device that improves visual perception distortion and a control method thereof.

Curved display devices have been limitedly used commercially in large movie theaters and simulators. As the thickness of a flat display panel becomes thinner due to recent technological development, a curved display device is applied to a home television and is being released.

In the curved display device, since the display panel is curved with a constant curvature, the viewing distance difference between the center and the edge of the screen is reduced, thereby increasing the uniformity of the overall screen contrast ratio. In addition, the curved display device has an advantage of reducing image distortion and increasing a viewer's sense of immersion by increasing an overall viewing angle.

On the other hand, the display device is provided with a pivot (Pivot) function for changing the horizontal direction and the vertical direction of the main body including the display panel. When this pivoting function is applied to a curved display, an image displayed on a display panel in one direction curved with a certain curvature before pivoting is displayed on a display panel in another direction having no curvature after pivoting.

In this case, due to the bending effect of the image displayed on the display panel in one direction before the pivot, a user watching the display from an appropriate distance will see the image displayed on the display panel in the other direction that does not have a curvature after the pivot is bent inside the frame. There was a problem that visual perception distortion occurred.

According to one aspect of the disclosure, a display and a control method for improving a phenomenon in which an image is seen curved even after a pivot function is improved and a user's sense of immersion is provided by reducing a user's visible distortion through image processing.

A display device according to an exemplary embodiment includes a display panel displaying an image and having a preset curvature; a pivot detector detecting whether the display panel is pivoted; and a controller configured to calculate a sense of image processing depth based on the curvature and adjust the image based on the calculated image processing depth when the pivot sensor detects the pivot.

A storage unit configured to store a sense of physical depth according to a pixel position after pivoting, wherein the control unit determines a depth control coefficient based on luminance information and color information of the image, and determines the stored physical depth and the determined The image processing depth may be calculated based on the depth control coefficient.

The controller may adjust the luminance or color of the display panel after pivoting based on the calculated image processing depth.

An interface unit configured to receive an input command for adjusting a user's sense of depth, wherein the controller changes at least one of a reference point at which luminance is adjusted in the image and the image processing depth based on the input command. can

The controller may adjust the luminance through infinite impulse response (IIR) filtering.

The control unit may determine the depth control coefficient based on luminance information of pixels within a preset range in which the image is output.

The controller may compare the luminance information and the color information included in the image with preset reference values, and change the calculated image processing depth according to the comparison result.

The sense of physical depth may be calculated based on a ratio of a panel size in a first direction of the display panel having the curvature to a panel size in a second direction of the display panel having no curvature.

When the display panel has a quadrilateral curvature, the controller may adjust an image displayed on the first display panel area in one direction and the second display panel area in the other direction.

A control method of a display device including a display panel having a preset curvature according to another embodiment includes detecting whether the display panel is pivoted; when detecting the pivot, calculating an image processing depth based on the curvature; adjusting an image based on the calculated image processing depth; and outputting the adjusted image through the display panel.

The method further includes storing a sense of physical depth according to pixel positions after pivoting, wherein the calculating determines a depth control coefficient based on luminance information and color information of the image, and determines the stored physical depth and the determined It may include calculating the image processing depth based on the depth control coefficient.

The adjusting may include adjusting the luminance or color of the display panel after pivoting based on the calculated image processing depth.

The method further includes receiving an input command for adjusting a user's sense of depth, wherein the adjusting changes at least one of a reference point where luminance is adjusted in the image and the image processing depth based on the input command. to do; may include.

The adjusting may include adjusting the luminance through infinite impulse response (IIR) filtering.

The calculating may include determining the depth control coefficient based on luminance information of pixels within a preset range in which the image is output.

The calculating may include comparing the luminance information and the color information included in the image with preset reference values, and changing the calculated image processing depth according to the comparison result.

The sense of physical depth may be calculated based on a ratio of a panel size in a first direction of the display panel having the curvature to a panel size in a second direction of the display panel having no curvature.

When the display panel has a four-sided curvature, the adjustment may adjust an image displayed on the first display panel area in one direction and the second display panel area in the other direction.

A display device and a control method thereof according to an aspect disclosed herein improve a phenomenon in which an image appears to be curved even after a pivot function, and increase a user's sense of immersion by reducing a user's perceived distortion through image processing.

According to another aspect, a display device and a control method thereof may adjust image processing according to a sense of depth that a user feels himself, and may improve a user's satisfaction range in preparation for a cognitive distortion phenomenon that is different for each person.

1 is an external view of a curved display device according to an exemplary embodiment.
2 is a control block diagram of a display device according to an exemplary embodiment disclosed herein.
FIG. 3 illustrates a display device according to an embodiment viewed from the front by a user, and FIG. 4 illustrates a pivot function of the display device according to an embodiment.
5 illustrates a display device recognized by a user after pivoting, and FIG. 6 illustrates a display device in which distortion perception is improved through image processing.
7 is a flowchart of a method for controlling a display device according to an exemplary embodiment.
8 and 9 are diagrams for explaining a physical depth value, and FIGS. 10 and 11 are diagrams for explaining a physical depth sense for each pixel after pivoting.
12 is a flowchart for explaining a method of adjusting an image using a sense of image processing depth.
13 is a table for explaining a method of determining depth control coefficients.
14 is an external view illustrating a curved display device according to another disclosed embodiment.

Like reference numbers designate like elements throughout the specification. This specification does not describe all elements of the embodiments, and general content or overlapping content between the embodiments in the technical field to which the present invention belongs is omitted. The term 'unit, module, member, or block' used in the specification may be implemented as software or hardware, and according to embodiments, a plurality of 'units, modules, members, or blocks' may be implemented as one component, It is also possible that one 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of being directly connected but also the case of being indirectly connected, and indirect connection includes being connected through a wireless communication network. do.

In addition, when a certain component is said to "include", this means that it may further include other components without excluding other components unless otherwise stated.

Terms such as first and second are used to distinguish one component from another, and the components are not limited by the aforementioned terms.

Expressions in the singular number include plural expressions unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of description, and the identification code does not explain the order of each step, and each step may be performed in a different order from the specified order unless a specific order is clearly described in context. there is.

Hereinafter, the working principle and embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an external view of a curved display device according to an exemplary embodiment.

The display device 100 may include a display unit of a mobile communication terminal such as a laptop computer, a smart phone, and a tablet, and a device for displaying an image, such as a television and a monitor of a PC (Personal Computer). The display device 100 according to is illustrated as a television.

Referring to FIG. 1 , the display device 100 includes a main body 110 forming an appearance and covering an area where an image is displayed, and a stand 112 mounted at a lower end of the main body 110 . As another example, the display device 100 may be installed on a wall using a bracket or the like.

Here, the main body 110 may include a cover (not shown) covering a rear surface of an area where an image is displayed and a bezel 111 covering an edge of the area where an image is displayed, and the cover and the bezel 111 are are detachably coupled to each other.

The input unit 130 may be disposed on the body 110 and may include a plurality of buttons. The plurality of buttons may include a power button, a channel/volume button, a screen control button, and the like.

The display panel 180 is an area where an image is displayed, and includes a liquid crystal display panel (LCD), an electroluminescence display panel (ELD), a field emission display panel (FED), a plasma display panel (PDP), and a thin film liquid crystal display (TFT). -LCD), organic light emitting diode display panel (OLED) may include any one of the display panel.

The disclosed display panel 180 is curved with a preset curvature. For example, a frame in the X direction of the display panel 180 (please add additional explanation about the x direction based on the panel) may be provided to be inserted in the rear surface of the display device 100, that is, in the Z direction, and the Y direction is curvature. It can be provided as a straight line that does not have

A sound output unit (not shown) may be provided in the display device 100 to output a sound related to an image.

The display device 100 performs remote communication with the remote controller 160 and performs an operation based on an input signal operated by the remote controller 160 .

For example, the display device 100 may perform a pivot function of changing the horizontal direction and the vertical direction of the body 110 by input of the remote controller 160 . As another example, the display device 100 may adjust the degree of image processing depth, which will be described later, by input of the remote controller 160.

2 is a control block diagram of a display device according to an exemplary embodiment disclosed herein.

The disclosed display device 100 includes a pivot detection unit 120 that detects whether or not the main body 110 is pivoted, an input unit 130 that receives a user's input command, a remote controller 160, and a communication unit that communicates with an external device ( 150), an interface unit 140 that receives various input commands from the user transmitted by the input unit 130 and the communication unit 150 and transmits them to the control unit 170, a storage unit 175 that stores data, and a control unit 170 It includes a display panel 180 for displaying the processed image and a control unit 170 for controlling each of the aforementioned components.

In detail, the pivot detector 120 may detect whether the user manually manipulates the cover and the base 111 to pivot the main body 110 . To this end, the pivot sensor 120 may receive whether or not the pivot is pivoted through a sensor located between the cover and the basel 111 .

In addition, the pivot detecting unit 120 may transmit an input command from the user through the input unit 130 and the remote controller 160, detect whether the received input command executes the pivot function, and transmit the command to the control unit 170. there is.

The input unit 130 and the communication unit 150 receive a user's input command, and the received input command may vary. In one example, the input command receives a command for initiating pivoting of the main body 110 and a command for adjusting depth for image processing, which will be described later.

An input command received by the input unit 130 is converted into an electrical signal and transmitted to the interface unit 140, and a communication signal received through the remote controller 160 is converted into an electrical signal by the communication unit 150 and transmitted to the interface unit 140. ) is transmitted to

The interface unit 140 may transmit image data received from the outside to the controller 170 in addition to the aforementioned user's input command. The image data transmitted by the interface unit 140 includes luminance and color information, and the controller 170 reduces perception distortion by changing the luminance and color. A detailed description of this will be described later through other drawings.

The communication unit 150 may include one or more components enabling communication with an external device as well as the remote controller 160, and may include, for example, at least one of a short-distance communication module, a wired communication module, and a wireless communication module. there is.

The short-range communication module uses a wireless communication network such as a Bluetooth module, an infrared communication module, a Radio Frequency Identification (RFID) communication module, a Wireless Local Access Network (WLAN) communication module, an NFC communication module, and a Zigbee communication module to transmit signals at a short distance. It may include various short-range communication modules that transmit and receive.

Wired communication modules include not only various wired communication modules such as Local Area Network (LAN) modules, Wide Area Network (WAN) modules, or Value Added Network (VAN) modules, but also USB (Universal Serial Bus) , High Definition Multimedia Interface (HDMI), Digital Visual Interface (DVI), recommended standard 232 (RS-232), power line communication, or plain old telephone service (POTS).

In addition to the WiFi module and the WiBro module, wireless communication modules include global system for mobile communication (GSM), code division multiple access (CDMA), wideband code division multiple access (WCDMA), and universal mobile telecommunications system (UMTS). ), a wireless communication module supporting various wireless communication schemes such as Time Division Multiple Access (TDMA) and Long Term Evolution (LTE).

The display panel 180 is a screen that displays a final image processed based on image data. A plurality of pixels, ie, pixels, are formed on the screen, and an image displayed on the screen has a plurality of pixels P. It can be formed by emitting light.

Here, a pixel means a point, which is the smallest unit constituting an image. Thus, the screen is made up of a set of pixels. Each of the plurality of pixels P may emit light of various brightnesses and colors.

Meanwhile, the disclosed display panel 180 may reduce distortion perceived by the user's eyes by adjusting light output from pixels. A criterion for adjusting the output light is an image processing depth calculated by the controller 170 to be described later.

The controller 170 controls each component included in the display device 100 . When the pivot sensor 120 detects the pivot of the main body 110, the controller 170 calculates a sense of image processing depth based on the curvature formed on the display panel 180, and based on the calculated sense of image processing depth, the display panel Adjust the image to be displayed in (180).

In detail, the controller 170 extracts a physical sense of depth according to a pixel position stored in the storage unit 175 in order to calculate a sense of image processing depth.

Here, the physical depth perception means the degree to which a user distorts and perceives the display panel 180 bent with a certain curvature by the pivot function. Therefore, since the physical depth is calculated based on the curvature determined when the display device 100 is manufactured, it may be stored in advance.

Meanwhile, the degree to which the user distorts and perceives the display panel 180 may vary depending on the image output from the display panel 180 in addition to the physical sense of depth. That is, the image processing depth perception means the degree to which the disclosed display apparatus 100 compensates for user's cognitive distortion.

Image processing depth is calculated by a depth control coefficient. That is, the controller 170 determines a depth control coefficient by synthesizing the user's input command and luminance information or color information included in the image, and determines the image processing depth based on the extracted physical depth sense and the determined depth control coefficient. After calculation, image processing is performed to improve the user's cognitive distortion.

A detailed description of the physical depth and the image processing depth will be described later through other drawings.

After pivoting with the calculated image processing depth, the controller 170 adjusts the luminance or color of pixels of the display panel where perceptual distortion occurs.

On the other hand, the control unit 170 uses a memory (not shown) for storing data for an algorithm or a program that reproduces the algorithm for controlling the operation of components in the display device 100, and the data stored in the memory as described above. It may be implemented as a processor (not shown) that performs an operation. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

In addition, the storage unit 175 is a non-volatile memory device such as a cache, read only memory (ROM), programmable ROM (PROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), and flash memory. Alternatively, it may be implemented as at least one of a volatile memory device such as RAM (Random Access Memory), a hard disk drive (HDD), or a storage medium such as a CD-ROM, but is not limited thereto.

The storage unit 175 may be a memory implemented as a separate chip from the processor described above in relation to the controller 170, or may be implemented as a single chip with the processor.

In the disclosed display device 100, at least one component may be added or deleted corresponding to the performance of the configuration described above in FIG. 2 . In addition, mutual positions of components may be changed corresponding to the performance or structure of the display device 100 .

FIG. 3 illustrates a display device according to an embodiment viewed from the front by a user, and FIG. 4 illustrates a pivot function of the display device according to an embodiment. 5 illustrates a display device recognized by a user after pivoting, and FIG. 6 illustrates a display device in which distortion perception is improved through image processing.

Referring first to FIG. 3 , in the curved display device 100 according to an exemplary embodiment, the display panel area 180a in the X-axis direction (horizontal direction) before pivoting may have a constant curvature, and the Y-axis before pivoting may be provided. The directional (vertical) display panel area 180b may be provided in a straight line shape.

Hereinafter, for convenience of description, the X-axis direction display panel area is referred to as the first display panel 180a and the Y-axis direction display panel area is referred to as the second display panel 180b.

When the user looks at the display device 100 from a preset viewing position, the user can recognize that the first display panel 180a is inserted in the Y-axis direction as shown in FIG. 3 .

When the pivot function is executed on the display device 100, the display panel 180 may be rotated clockwise as shown in FIG. 4. In this case, the first display panel 180a before pivoting is changed in the Y-axis direction, and the second display panel 180b is changed in the X-axis direction.

Meanwhile, the display device 100 adjusts the displayed image according to the panel size of the display panel 180 that is changed after pivoting. In this process, the user distorts and perceives the image displayed on the second display panel 180b after pivoting due to the afterimage of the bending of the first display panel 180a before pivoting. That is, the user can recognize the second display panel 180b as shown in FIG. 5 after pivoting.

The disclosed display device 100 processes an image displayed on the second display panel 180b that the user distorts and perceives so that the user can perceive it as shown in FIG. 6 .

7 is a flowchart of a method for controlling a display device according to an exemplary embodiment. 8 and 9 are diagrams for explaining a physical depth value, and FIGS. 10 and 11 are diagrams for explaining a physical depth for each pixel after pivoting. In order to prevent overlapping descriptions, they will be described together below.

Referring to FIG. 7 , the disclosed display device 100 pre-calculates a physical depth according to a pixel position after pivoting and stores it in the storage unit 175 (200).

As described above with reference to FIGS. 2 and 5 , the physical sense of depth means the degree to which the user distorts and perceives the curvature of the display panel 180 according to the pivot function.

A sense of physical depth may be calculated based on a physical depth value due to curvature and a horizontal resolution of the first display panel 180a having curvature. Here, the physical depth value means the degree of insertion in the Z-axis from the straight panel reference S1 when the first display panel 180a bent with a constant curvature is viewed from the Y-axis direction, as shown in FIG. 8 .

Referring to FIG. 9 , a physical depth value is a distance (d1 to d5) between pixels P1 to P5 located in the first display panel 180a where the pre-pivot curvature is formed from the virtual straight panel reference S1.

In general, the curved display device 100 forms a curvature to increase a user's field of view (FOV). Therefore, it is possible to have the largest physical depth value at an appropriate viewing position that increases the viewing angle, that is, the pixel P1 perpendicular to the Z-axis direction from the FOV of FIG. 9 . In addition, the physical depth value decreases according to the pixels P2 to P4 provided in the X-axis direction. The physical depth value of the edge pixel P5 of the first display panel 180a is 0.

Meanwhile, a physical sense of depth according to a pixel position is calculated by Equation 1 below.

Here, the physical depth value is different according to each pixel position described above, and the panel resolution means the resolution of the first display panel 180a before pivoting.

When the physical depth is calculated according to the pixel position, the display device 100 calculates the physical depth according to the pixel position after pivoting. The physical depth sense according to the pixel position after pivoting is as shown in Equation 2 below.

Here, the horizontal panel size and the vertical panel size refer to the horizontal or vertical panel size of the display panel 180 before pivoting. In general, the display device 100 has a horizontal panel size larger than a vertical panel size. When the display device 100 is pivoted, perceptual distortion may occur in the second display panel 180b. Accordingly, the display apparatus 100 according to an exemplary embodiment calculates a sense of physical depth based on a ratio of panel sizes before and after the pivot.

Specifically, FIG. 10 illustrates an example in which the display device 100 is pivoted. That is, the size of the second display panel 180a becomes the horizontal panel size of Equation 2, and the size of the first display panel 180b becomes the vertical panel size of Equation 2.

When the display device 100 is pivoted as shown in FIG. 10 , the physical depth calculated based on the panel size ratio can be expressed as shown in FIG. 11 . In FIG. 11 , pixels P1' to P5' are pixels of the second display panel 180b corresponding to physical depth values of the pixels P1 to P5 included in the first display panel 180a of FIG. 10 .

That is, the disclosed display apparatus 100 calculates the physical depth of the display panel area 180b in the other direction after pivoting by using the physical depth of the display panel area 180a in one direction before the pivot, and calculates the image processing depth. use it to

Meanwhile, when the horizontal or vertical panel sizes are the same, Equation 2 may not be applied.

The physical depth value is predetermined when the disclosed display device 100 is manufactured, and the resolution and panel size may also be determined at the time of manufacture. Therefore, the disclosed display apparatus 100 may calculate a physical depth in advance and store it in the storage unit 175 or the like, and when a pivot is detected, the stored physical depth is extracted and used to calculate an image processing depth.

Referring back to FIG. 7 , the display device 100 determines whether to start the pivot function (210).

Whether or not the pivot is detected through the interface unit 140 described above in FIG. 2 .

For example, the interface unit 140 may detect whether or not the pivot is pivoted through an electrical signal from the pivot detector 120 that detects the user's physical force. As another example, the interface unit 140 may determine whether or not to start operating the pivot function based on an input command transmitted by the communication unit 150 .

When the pivot is detected, the display apparatus 100 determines a depth control coefficient (220).

Here, the depth control coefficient is used to determine image processing depth, that is, a degree to compensate for perceptual distortion. The disclosed display device 100 adjusts the luminance and color of an image output from the display panel 180 to compensate for user's cognitive distortion. Accordingly, the depth control coefficient is determined based on luminance information and color information included in the output image, and may vary depending on the image.

A detailed method of determining the depth control coefficient will be described later with reference to FIG. 13 .

When the depth control coefficient is determined, the display apparatus 100 calculates an image processing depth (230).

Image processing depth can be calculated through Equation 3 below.

Here, the physical depth according to the pixel includes the physical depth calculated through Equation 1 or Equation 2, and the depth control coefficient is the coefficient determined in 220 .

The display device 100 adjusts luminance or color based on the calculated image processing depth (240).

As described above, image processing depth means a degree of compensating for user's cognitive distortion. Therefore, if the calculated value of image processing depth is large, it means that the current user perceives the pivoted display panel 180 as severely distorted, and the display apparatus 100 adjusts the degree of image processing to a high level.

For example, the display apparatus 100 may output an image obtained by adjusting the luminance of pixels included in the edge of the distorted display panel 180 to be brighter than the luminance of the originally displayed image. Through this, it is possible to compensate for recognizing a curved image as a straight line.

As another example, when it is difficult to improve the perceptual distortion even if the luminance is adjusted, specifically, when the luminance of the image is weak, the perceptual distortion may be improved by adjusting the saturation of the color rather than the luminance.

Finally, the display device 100 may compensate for perceptual distortion by adjusting luminance and color together. Matters related to the determination of whether the display apparatus 100 performs image processing by adjusting brightness and color will be described later with reference to FIG. 12 below.

12 is a flowchart for explaining a method of adjusting an image using a sense of image processing depth.

Referring to FIG. 12 , the display apparatus 100 receives an image to be displayed (300).

The display apparatus 100 compares luminance information included in the received image with a reference value (310).

In order to improve the user's cognitive distortion caused by the pivot of the curved display panel, it is effective to adjust the luminance. However, when the overall luminance of the output image is weak, adjusting the luminance may not have an effect on improving perceptual distortion.

The disclosed display device 100 adjusts the luminance when the luminance information included in the image is equal to or greater than a preset reference value (320).

However, if the luminance information is equal to or less than the reference value, the disclosed display device 100 may improve perceptual distortion by adjusting colors included in the image (330).

In other words. The above image adjustment method may be expressed as Equation 4 below.

Here, alpha and beta may be variously changed according to the received image, and the range is between 0 and 1.

13 is a table for explaining a method of determining depth control coefficients.

As described above, the image processing depth is calculated through the physical depth and the depth control coefficient. However, since the physical depth is pre-determined and stored at the time of manufacture, the image processing depth is determined through the depth control coefficient.

For example, the sense of depth control coefficient may be adjusted by a user's input command for adjusting the sense of depth. Perceptual distortion in which the display panel appears bent may vary in degree of distortion depending on the user. Therefore, the user can adjust the image processing depth through an input command.

Referring to FIG. 13 , when the sense of depth enhancement is input as Low, the luminance of a pixel located in a portion of the display panel 180 where perception distortion occurs may increase. As the luminance increases, that is, as the image becomes brighter, the extent to which the curved edge of the panel is perceived as a straight line increases. That is, the sense of depth may increase.

When the user changes the input command from Low to High, the sense of depth changes from increasing to increasing. As the sense of depth increases, the improvement of cognitive distortion may weaken.

In addition, the depth sense control coefficient may also change the reference point along with depth control. Specifically, the reference point is set to the central portion (P1' in FIG. 11) of the display panel having a certain curvature. However, since the distortion point perceived by the user may vary, the reference point at which the sense of depth is adjusted also varies for each user.

Therefore, the disclosed display apparatus 100 can improve perceptual distortion for each user by inducing the user to adjust the position of a pixel whose luminance is to be changed.

Meanwhile, the disclosed display apparatus 100 may determine a depth control coefficient using an object displayed on an image in addition to a user's input command.

For example, the display apparatus 100 may preset a range of luminance that changes according to the sense of image processing depth, and may match the luminance of an object in an image displayed around a pixel of the display panel 180b where perceptual distortion occurs to a preset range. ranges can be compared. If a change in luminance to be adjusted is greater than the luminance of a pixel displaying an object, grayscale reversal may occur. In order to prevent this, the disclosed display device 100 comprehensively considers an input command and luminance information within an image to calculate image processing depth.

The reference point may also be changed by an object displayed in the image. For example, when an object with high luminance is output from a pixel corresponding to a reference point for increasing a sense of depth and neighboring pixels, the reference point may be moved to increase a sense of depth.

However, when the reference point moves to the edge of the display panel 180, the additional sense of depth may be unnatural. Accordingly, the degree of movement may be set to 2/3 of the edge of the display panel 180 .

When adjusting the luminance through the image processing depth calculated by determining the depth control coefficient, the display device 100 may also adjust the luminance through IIR (Infinite Impulse Response) filtering, which causes flicker due to rapid luminance change can be prevented and smoothness can be increased.

Meanwhile, the various reference points and ranges described above may be varied and adjustable.

14 is an external view illustrating a curved display device according to another disclosed embodiment.

The display device 100 according to an embodiment compensates for cognitive distortion caused when a curved display device having a certain curvature is pivoted on two of the four sides of the display panel 180 .

However, the display device 101 according to another embodiment may include a display panel 181 having curvature on all four surfaces, and the curvature and panel size of the first display panel area 181a are the same as those of the second display panel area ( 181b) may have different curvatures and panel sizes.

After pivoting, in the display device 101 of FIG. 14 , the first display panel area 181a is changed in the Y-axis direction, and the second display panel area 181b is changed in the X-axis direction.

After pivoting, the display apparatus 101 according to another embodiment calculates an image processing depth to be applied to the first display panel area 181a based on the physical depth and depth control coefficient of the second display panel area 181b. and adjusts luminance and color based on the calculated image processing depth.

At the same time, the display device 101 calculates the image processing depth to be applied to the second display panel area 181b based on the physical depth of the first display panel area 181a and the depth control coefficient, and calculates the image processing depth. Adjust the luminance and color based on the sense.

Meanwhile, a value smaller than the depth control coefficient applied to the display device 100 according to another embodiment may be applied to the depth control coefficient applied by the display device 101 according to another embodiment.

Through this, the disclosed display device 100 can reduce a user's perception distortion in which the display panel looks bent after pivoting, and can improve a user's satisfaction range in preparation for a perception distortion phenomenon that is different for each person.

100, 101: display device 120: pivot detection unit,
130: input unit 140: interface unit,
150: communication unit 160: remote control,
170: control unit 175: low unit,
180: display panel

Claims (18)

a display panel displaying an image and having a preset curvature;
a pivot detector detecting whether the display panel is pivoted;
a storage unit that stores a sense of physical depth according to a pixel position after pivoting; and
When the pivot detecting unit senses the pivot, a control unit for adjusting the image based on image processing depth; and
The control unit,
A display device that determines a depth control coefficient based on luminance information and color information of the image, and calculates the image processing depth based on the stored physical depth and the determined depth control coefficient. delete According to claim 1,
The control unit,
A display device that adjusts the luminance or color of the display panel after pivoting based on the calculated image processing depth. ◈Claim 4 was abandoned when the registration fee was paid.◈ According to claim 3,
Further comprising an interface unit for receiving an input command for adjusting the user's sense of depth;
The control unit,
A display device that changes at least one of a reference point at which luminance is adjusted in the image and a sense of depth of the image processing based on the input command. ◈Claim 5 was abandoned when the registration fee was paid.◈ According to claim 3,
The control unit,
A display device controlling the luminance through infinite impulse response (IIR) filtering. According to claim 1,
The control unit,
and determining the depth control coefficient based on luminance information of pixels within a preset range in which the image is output. According to claim 1,
The control unit,
A display device that compares the luminance information and color information included in the image with preset reference values, and changes the calculated image processing depth according to the comparison result. According to claim 1,
The physical depth,
The display device is calculated based on a ratio of a panel size in a first direction of the display panel having the curvature to a panel size in a second direction of the display panel not having the curvature. ◈Claim 9 was abandoned when the registration fee was paid.◈ According to claim 1,
The control unit,
When the display panel has a four-sided curvature, the display device controls an image displayed on a first display panel area in one direction and a second display panel area in another direction. In the control method of a display device including a display panel having a preset curvature,
detect whether the display panel is pivoted;
store a physical depth sense according to pixel positions after pivoting;
if the pivot is sensed, determining a depth control coefficient based on luminance information and color information of the image, and calculating an image processing depth based on the stored physical depth sense and the determined depth control coefficient;
adjusting an image based on the calculated image processing depth; and
and outputting the adjusted image through the display panel. delete According to claim 10,
To regulate the
Controlling the display device including adjusting the luminance or color of the display panel after pivoting based on the calculated image processing depth. ◈Claim 13 was abandoned when the registration fee was paid.◈ According to claim 12,
Receiving an input command for adjusting the user's sense of depth; further comprising,
To regulate the
and changing at least one of a reference point at which luminance is adjusted in the image and a sense of depth of the image processing based on the input command. ◈Claim 14 was abandoned when the registration fee was paid.◈ According to claim 12,
To regulate the
A control method of a display device comprising: controlling the luminance through infinite impulse response (IIR) filtering. According to claim 10,
Calculating the above
and determining the depth control coefficient based on luminance information of pixels within a preset range within which the image is output. According to claim 10,
Calculating the above
and comparing the luminance information and the color information included in the image with preset reference values, and changing the calculated image processing depth according to the comparison result. According to claim 10,
The physical depth,
The control method of the display device is calculated based on the ratio of the panel size of the first direction of the display panel having the curvature and the panel size of the second direction of the display panel not having the curvature. ◈Claim 18 was abandoned when the registration fee was paid.◈ According to claim 10,
To regulate the
A method of controlling a display device for controlling an image displayed in a first display panel area in one direction and a second display panel area in another direction when the display panel has a quadrilateral curvature.

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