KR20150086728A - Flexible display apparatus and method of controlling display apparatus - Google Patents

Abstract

According to an embodiment of the present invention, disclosed is a flexible display device. The flexible display device includes: a flexible display panel capable of implementing a flat surface mode and a curved surface mode; a sensor unit which measures the distance between the flexible display panel and a viewer; a current viewing angle determining unit which calculates the current viewing angle of the viewer based on the distance to the viewer; an optimal viewing angle determining unit which calculates the optimal viewing angle corresponding to the display contents of the flexible display panel; and a notification display unit which displays information regarding the user′s movement location and curvature adjustment based on the current viewing angle and the optimal viewing angle.

Description

Technical Field [0001] The present invention relates to a flexible display apparatus and a flexible display apparatus,

The present invention relates to a display device having a flexible display panel capable of realizing a curved surface mode, and a display device for providing an information to a viewer or changing a curvature by calculating an optimum angle of view for each provided content.

Electronic devices based on mobility are widely used. In addition to small electronic devices such as mobile phones, tablet PCs are widely used as mobile electronic devices.

Such a mobile electronic device includes a display device for providing visual information such as an image or an image to viewers in order to support various functions. 2. Description of the Related Art [0002] Recently, as the size of other parts for driving the display unit has been reduced, the weight of the display unit in electronic equipment has been gradually increasing, and a structure capable of being bent to have a predetermined angle in a flat state has been developed.

In order to increase the visibility of the flexible display device, the present invention can measure the distance between the viewer and the display device using the sensor, calculate the optimal viewing angle of the displayed content, and provide the viewer with a notification.

Further, the present invention can measure the distance between a viewer and a display device by using a sensor to increase the visibility of the flexible display device, calculate the optimum viewing angle of the displayed content, and then control the curvature of the flexible display panel have.

One embodiment of the present invention provides a flexible display panel capable of implementing a planar mode and a curved surface mode; A sensor unit for measuring a distance between the flexible display panel and a viewer; A current view angle calculating unit for calculating a current view angle of view of the viewer based on a distance from the viewer; An optimal view angle determining unit for calculating an optimal viewing angle of view corresponding to display contents of the flexible display panel; A notification display unit for displaying information on the movement position or the curvature adjustment of the viewer based on the current viewing angle of view and the optimum viewing angle of view; And a flexible display device.

In the present invention, an optimum viewing angle of view corresponding to the content can be calculated based on the display content and the discrimination visibility information storage capability.

In the present invention, the notification display unit may provide information on whether the viewer should decrease or increase the separation distance of the flexible display panel.

In the present invention, the notification display unit displays information that the separation distance should decrease when the current viewing angle of view is smaller than the optimum viewing angle of view, and when the current viewing angle of view is larger than the optimum viewing angle of view, Information indicating that the distance should be increased can be displayed.

In the present invention, the notification display unit may display that the curvature of the flexible display panel is changed based on the optimum viewing angle.

The curvature control unit may further include a curvature adjusting unit configured to change a curvature of the flexible display panel so that the viewing angle of view is the optimum viewing angle of view, A signal can be generated.

In the present invention, the curvature adjusting unit may generate a signal for reducing the curvature of the flexible display panel when the current viewing angle of view is smaller than the optimum viewing angle of view, and when the current viewing angle of view is larger than the optimum viewing angle of view , A signal for increasing the curvature of the flexible display panel can be generated.

The present invention may further include an imaging unit for imaging the viewer and the surrounding environment, and the notification display unit may indicate where the current viewing position and the optimum viewing position in the surrounding environment are.

In the present invention, the notification display unit may display the type of contents displayed on the flexible display device.

In the present invention, the flexible display panel may include a liquid crystal element or an organic light emitting element.

According to another embodiment of the present invention, there is provided a method of controlling a display apparatus, comprising: sensing a distance between a flexible display panel and a viewer; A current view angle calculating step of calculating a current view angle of view of the viewer based on a distance from the viewer; An optimum viewing angle determining step of calculating an optimal viewing angle of view corresponding to the display content of the flexible display panel; An information display step of displaying information on the movement position or the curvature adjustment of the viewer based on the current viewing angle of view and the optimal viewing angle of view; A control method of a flexible display device is disclosed.

In the present invention, an optimum viewing angle of view corresponding to the content can be calculated based on the display content and the discrimination visibility information storage capability.

In the present invention, the notification display step may provide information on whether the viewer should decrease or increase the separation distance of the flexible display panel.

In the present invention, when the current viewing angle is smaller than the optimal viewing angle, the notification display step displays information indicating that the distance should be decreased. When the current viewing angle is larger than the optimum viewing angle, Information indicating that the separation distance should be increased can be displayed.

The curvature control step may further include a curvature adjusting step of generating a signal for changing a curvature of the flexible display panel, wherein the curvature control step adjusts the curvature of the curvature of the flexible display panel so that the curvature of the curvature of the flexible display panel Can be generated.

In the present invention, the curvature adjusting step generates a signal for reducing the curvature of the flexible display panel when the current viewing angle of view is smaller than the optimum viewing angle of view, and when the current viewing angle of view is larger than the optimum viewing angle of view A signal that increases the curvature of the flexible display panel can be generated.

In the present invention, the notification display step may indicate where the current viewing position and the optimal viewing position in the surrounding environment are.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

These general and specific aspects may be implemented by using a system, method, computer program, or any combination of systems, methods, and computer programs.

According to the embodiment of the present invention described above, the following effects are provided.

An embodiment of the present invention enables a viewer to use a display device at an optimum viewing angle for each content.

1 is a perspective view schematically showing a planar mode and a curved surface mode of a display device according to an embodiment of the present invention.
2 is a table for explaining a method for determining an optimum viewing position.
3 is a cross-sectional view taken along the line I-I 'of the display device 1 of Fig.
4 is an enlarged cross-sectional view of part II of Fig.
5 is a view showing an example of the shape-deforming portion of Fig.
FIG. 6 is a block diagram schematically showing an internal configuration of a display device 1 according to an embodiment of the present invention.
FIG. 7 is a diagram illustrating a case in which an optimum viewing angle of view is indicated according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating a case in which an optimum viewing angle is indicated according to another embodiment of the present invention.
9 is a diagram related to a configuration for controlling curvature according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

 In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning.

In the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessive are intended to mean that a feature, or element, described in the specification is present, and does not preclude the possibility that one or more other features or elements may be added.

In the following embodiments, when a part of a film, an area, a component or the like is on or on another part, not only the case where the part is directly on the other part but also another film, area, And the like.

In the drawings, components may be exaggerated or reduced in size for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

If certain embodiments are otherwise feasible, the particular process sequence may be performed differently from the sequence described. For example, two processes that are described in succession may be performed substantially concurrently, and may be performed in the reverse order of the order described.

1 is a perspective view schematically showing a planar mode and a curved surface mode of a display device according to an embodiment of the present invention.

The display device 1, 2, 3 according to FIG. 1 has a flexible display panel 110 that can be selectively implemented in a flat mode (FM) and a curved mode (CM).

Referring to FIG. 1, a display device 1 according to an embodiment of the present invention may be a curved type display device. The display device 1 may be a curved type flexible display panel and may be any device that provides image data to a viewer. For example, the display device 1 may be a television, a monitor, a smartphone, a tablet, or the like. The flexible display panel 110 outputs the activated time information of the video received through the broadcast channel and the video received through the input terminal to the viewer through the front surface. For example, the flexible display device 110 may be a flexible display, such as a flexible OLED (flexible organic light emitting diode) or a flexible Liquid Crystal Display (LCD).

1, the display device 1 can maintain the flat mode (FM) and enter the curved surface mode CM by the control of the control unit 140 (to be described later) in the display device 1 have.

The flexible display panel 110 of the display device 1 includes first and second long side portions 110a and 110b extending in parallel with each other in a planar mode FM and first and second long side portions 110a and 110b, 110b extending in a direction substantially perpendicular to the first and second side walls 110a, 110b. The first and second short sides 110c, 110d may be formed into a substantially rectangular shape having four corners. Although the edge of the flexible display panel 110 is clearly shown in the embodiment of FIG. 1 (a), the borderless display method is not necessarily limited thereto.

The curved surface mode CM is a mode in which the flexible display device 110 according to the embodiment of the present invention maintains the bent state as in the embodiment of FIG. According to one embodiment of the present invention, in the curved mode CM, the flexible display device 110 is bent so that the first and second short side portions 110c and 110d are close to the viewer centering on the panel center C . At this time, an angle between a line segment connecting the first short side portion 110c from the viewer and a line segment connecting the second short side portion 110d from the viewer can be referred to as a viewing angle of view? C.

The display device 1 may further include a panel support portion 130 for supporting a load of the flexible display panel 110.

The display device 1 according to the embodiment of the present invention calculates the view angle of view of the current viewer based on the distance from the viewer to the flexible display panel 110 and displays the content displayed by the flexible display panel 110 And outputs the position notification to the viewer or changes the curvature of the flexible display panel 110 according to the optimum viewing angle. 2, a method for determining an optimal viewing position will be described.

2 is a table for explaining a method for determining an optimum viewing position.

2 (a) is a table showing a human visual information receiving area.

In the table (a) of FIG. 2, information on the type, content, etc. of the field of view is included for each angle of view. For example, in the effective viewing area, the left and right view angles are 30 ° and the up and down view angles are 20 °. In the effective viewing area, viewers can watch information by eye movement alone and receive information instantaneously. On the other hand, the induction field region refers to a region where the left and right view angles are 100 ° and the up and down view angles are up to 85 °, which can determine the presence of the presented information in the induced field of view, .

2B is a table showing an optimum viewing angle of view for each content based on the time information receiving area

As described above, since the information can be received instantaneously up to the effective viewing area, it is preferable that the viewer watches the content in the field of view of the effective viewing area in the case of contents in which information transfer is important, such as news, education, or home shopping. On the other hand, it is desirable to view contents in the field of view of the guidance field so as to cover the peripheral field of view as much as possible, such as games, sports, documentaries and the like.

That is, in the case of contents such as news, culture, and home shopping, the optimum viewing angle is less than 30 degrees, and in the case of contents such as games, sports, and documentaries, the optimal viewing angle is preferably 90 degrees or more.

According to an embodiment of the present invention, information on the optimum view angle of view for each content described in FIG. 2 may be provided to a viewer, or the flexible display panel 110 may be modified according to an optimum view angle.

3 and 6, a specific configuration and a modification method of the flexible display panel 110 will be described.

3 is a cross-sectional view taken along the line I-I 'of the display device 1 of Fig.

3, the flexible display panel 110 includes a first flexible substrate 111, a second flexible substrate 113 disposed to face the first flexible substrate 111, And an organic light emitting device 112 disposed between the substrate 111 and the second flexible substrate 113.

The first flexible substrate 111 can be made of a plastic material having excellent heat resistance and durability such as polyethylene ether phthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, polyether sulfone, and polyimide . However, the present invention is not limited thereto, and various flexible materials can be used.

A barrier film (not shown) may further be provided on the first flexible substrate 111. The barrier film (not shown) may be formed of a film of at least one of an inorganic film and an organic film. A barrier film (not shown) prevents unnecessary components from penetrating the flexible substrate 111 and penetrating the organic light emitting element 112.

4 is an enlarged cross-sectional view of part II of Fig.

Referring to FIG. 4, the organic light emitting device 112 includes a pixel electrode 112-1, a counter electrode 112-3 as a common layer, and an organic light emitting layer 112-2 provided therebetween. The pixel electrode 112-1 is electrically connected to a driving thin film transistor (TFT) formed on the first flexible substrate 111. [ Although not shown in FIG. 4, the organic light emitting device 112 is electrically connected to the switching thin film transistor and the storage capacitor.

A second flexible substrate 113 is provided as an encapsulating member for encapsulating the organic light emitting element 112 on the organic light emitting element 112. The second flexible substrate 113 may be formed of the same material as the above-described first flexible substrate 111, or may be formed of a plurality of inorganic film structures or a structure in which an inorganic film and an organic film are mixed. Although not shown in FIGS. 3 and 4, the first flexible substrate 111 and the second flexible substrate 113 may further include various protection members.

The organic light emitting device 112 may include organic polymer contained in the organic light emitting layer 112-2 or a self light emitting type organic light emitting material that emits light having low organic molecules by the current applied to the pixel electrode 112-1 and the counter electrode 112-3. There are many advantages that are suitable for a flexible display device. Of course, the present invention can be applied not only to the organic light emitting device but also to the flexible liquid crystal device, and to other flexible display devices.

Since the flexible display panel 110 described above has a flexible nature, it is difficult to maintain the shape of the panel enough to view an image. In order to solve this problem, a shape deforming portion 120 is provided on one side of the flexible display panel 110. In this embodiment, the shape-deforming portion 120 is provided on the opposite side of the area where the image of the flexible display panel 110 is displayed, for example, on the first flexible substrate 111. [

The shape deforming unit 120 enables the shape change of the flexible display panel 110 in the process of switching between the planar mode FM and the curved mode CM and allows the deformations of the planar mode FM and the curved mode CM In the stage where the switching is completed, the flexible display panel 110 maintains the rigidity, thereby deforming and holding the shape of the flexible display panel 110. [

5 is a view showing an example of the shape-deforming portion of Fig.

5, an actuator 123 is disposed between the first electrode 121 and the second electrode 122 in the shape-deforming portion 120.

The first electrode 121 is disposed on one surface of the actuator 123 in parallel at regular intervals and the second electrode 122 is disposed as a bar electrode on the other surface of the actuator 123. When predetermined voltages V1, V2 and V3 are applied to the first electrode 121 and the second electrode 122 divided by the circuit unit 124 under the control of a control unit (not shown) It is possible to control the degree of curvature of the curved surface of the flexible display panel 110 provided at one side of the shape-deforming portion 120 by taking the actuator 123 in the posture in response.

For example, when the voltage of the first level is applied, the actuator 123 does not switch the posture so that the flexible display panel 110 maintains the planar mode FM, and when the voltage of the second level is applied, The controller 123 causes the curved surface of the flexible display panel 110 to be bent so that the curved surface of the flexible display panel 110 is switched to the curved surface mode CM. When the third level voltage is applied, the actuator 123 does not change the posture, It is possible to maintain the curved shape of the flexible display panel 110 that has been switched to the mode CM. That is, the shape-deforming portion 120 can also function as a shape retaining portion.

On the other hand, the actuator 123 has rigidity at the voltage of the first level and the voltage of the third level which do not change the attitude, and can have flexibility at the second level voltage for switching the attitude. At this time, the voltage of the first level and the voltage of the third level may be the same. Here, the voltages of the first to third levels may have a specific voltage value, or may have a voltage value of a specific range. As such an actuator 123, various materials such as an electric response type polymer or a shape memory alloy can be used. The shape deforming unit 120 may further include a protective film (not shown) for protecting the first electrode 121 and the second electrode 122.

The second level voltage for switching the flexible display panel 110 from the planar mode FM to the curved surface mode CM is shifted from the center portion C of the flexible display panel 110 to the positive The degree of curvature of the curved surface at both side edge portions in the horizontal direction with respect to the center portion C of the flexible display panel 110 is set to be equal to or less than It can be formed symmetrically.

FIG. 6 is a block diagram schematically showing an internal configuration of a display device 1 according to an embodiment of the present invention.

6, the display device 1 includes a flexible display panel 110, a shape deforming unit 120, a control unit 140 and an image pickup unit 151, a sensor unit 152 and a remote control receiving unit 153, . The control unit 140 includes a mode control unit 141, a current angle of view calculation unit 142, an optimum angle of view determination unit 143, a notification display unit 144, and a curvature adjustment unit 145.

As described above, the shape deformation part 120 maintains the flat state of the flexible display panel 110, or maintains the flexible display panel 110 in a bent state or a bent state.

The image pickup section 151 can pick up an image of an object located on the front face of the display apparatus 1. [ Particularly, the image pickup section 151 can acquire images of the viewer and viewer's environment watching the display device 1. [ The image captured by the image pickup unit 151 can be used as auxiliary information for clearly indicating the optimum viewing position when the notification display unit 144, which will be described later, guides the optimum viewing position.

The sensor unit 152 serves to measure the distance between the display device 1 and the viewer. For the sensor unit 152, all sensors for measuring the distance may be applied. The distance between the display device 1 and the viewer can be determined from the center of the panel C to the viewer.

The remote control receiving unit 153 serves to receive remote control of the display device 1 from the outside. For example, the remote control reception unit 153 may receive a signal for controlling the curvature of the flexible display panel 110 from a remote control for controlling the operation of the display apparatus 1, and may transmit the signal to the control unit 140 have.

The control unit 140 calculates the angle of view of the current viewer and the optimum viewing angle of view to provide a notification to the viewer or control the curvature of the flexible display panel 110.

The mode control unit 141 applies a voltage of a predetermined level to the shape deforming unit 120 when an external force equal to or greater than a predetermined value is applied to the flexible display panel 110 or when receiving a remote control input, It is possible to switch between the planar mode FM of the flexible display panel 110 and the curved surface mode CM. The mode control unit 141 applies a varying voltage to the shape deforming unit 120 according to the position of the flexible display panel 110 so that the degree of curvature of the curved surface of the flexible display panel 110 is changed .

The current angle of view calculator 142 calculates the viewing angle of view of the current viewer. The view angle of the current viewer can be calculated by calculating the viewing distance acquired by the sensor unit 152 and the curvature of the current flexible display panel 110. [ When the distance from the viewer to the flexible display panel 110 is D, the length of the first and second long side portions 110a and 110b is Wc, and the current viewing angle is θc, Can be expressed by the following Equation (1). [Equation 1] can be used under an approximate assumption that the current viewing position coincides with the center of a circle whose radius is D,

[Equation 1]

The optimum angle-of-view determining unit 143 determines the optimum viewing angle of view according to the type of content currently being displayed on the flexible display panel 110. [ As described above with reference to FIG. 2, the optimum viewing angle can be determined by the characteristics of the content and the ability to store the discriminating visual information.

The notification display unit 143 compares the current viewing angle with the optimum viewing angle of view and displays information about the optimum viewing angle of view of the currently displayed content to the viewer. For example, the notification display section 143 may display to the viewer the contents of the flexible display panel 110, which advises the viewer to approach the flexible display panel 1 more.

According to an embodiment of the present invention, the notification display unit 143 displays information for designating the optimum position of the viewer in the surrounding environment based on the image of the viewer and the surrounding environment acquired by the image pickup unit 151, Can be displayed. For example, the notification display unit 143 may provide images of the current viewing position and the optimal viewing position of the viewer in the surrounding environment image so that the viewer can perceive the current position and the optimum position of the viewer .

The curvature calculator 145 calculates and adjusts the curvature of the flexible display panel 110 in order to adjust the optimal viewing angle on the assumption that the current distance D of the viewer is fixed. The curvature calculator 145 may communicate with the shape deforming unit 120 to control the flexible display panel 110 to have the calculated curvature.

In the specification of the present invention, the curvature refers to a rate of change of a traveling direction when a point on a curve moves at a constant speed along a curve, and may indicate a degree of curvature of a curved surface. When the distance D between the viewer and the panel center C is fixed, the viewing angle of view is smaller as the curvature of the flexible display panel 110 is larger, and the viewing angle of view is larger as the curvature is smaller. The larger the curvature of the flexible display panel 110 is, the shorter the distance between the first and second short side portions 110c and 110d is. Therefore, viewing angle can be changed by changing the curvature of the flexible display panel 110 by the shape-deforming unit 120 by the input of the curvature calculating unit 145. [

FIG. 7 is a diagram illustrating a case in which an optimum viewing angle of view is indicated according to an embodiment of the present invention.

7, it can be seen that the viewer is separated from the flexible display panel 110 by the present distance D and the viewing angle of view? C is 45 degrees. The sensor unit 152 measures the separation distance D from the viewer and the current viewing angle calculation unit 142 calculates the current viewing angle of view c of the viewer based on the separation distance D. [ Referring to the upper right figure, since the content currently displayed on the flexible display panel 110 is news contents, it is necessary to keep the viewing angle of view at 30 ° below the effective viewing range. That is, the optimum angle-of-view determining unit 143 determines that the optimum viewing angle of view of the current display content is 30 degrees. Accordingly, the alarm display unit 143 can display a pop-up window 110a for guiding the optimal position to the flexible display panel 110. [ The pop-up window 110a may include information on the type and optimum position of the currently displayed content. In the example of FIG. 7, the pop-up window 110a displays 'news', which is the currently displayed content, and a 'welcome back' message, to narrow the viewing angle of view c to the effective viewing range.

7 shows a case where a viewer views the guidance text displayed on the pop-up window 110a and moves the viewing position backward. As shown in the lower right picture, it can be seen that the viewer is spaced apart from the flexible display panel 110 by the adjustment distance d and the viewing angle of view c is 30 °, which is the optimal viewing angle. Therefore, the position of the current viewer is the optimum viewing position. Thus, the pop-up window 110a displayed on the flexible display panel 110 may display a notification such as 'optimal location'.

FIG. 8 is a diagram illustrating a case in which an optimum viewing angle is indicated according to another embodiment of the present invention.

Referring to FIG. 8, when the current viewing angle is 30 ° and the current distance from the flexible display panel 110 is D, the upper left screen can provide notification of the optimal viewing position as in the upper right screen . More specifically, the sensor unit 152 measures the current distance D of the viewer, and the current angle of view calculating unit 142 calculates that the current viewing angle of view of the viewer is 30 degrees based on the distance D. At this time, when the currently displayed content is 'game', as shown in the upper right flexible display panel 110, the optimum view angle determination unit 143 determines that the optimum view angle of view is 100 ° .

As described above, the image pickup section 151 can acquire images of the environment surrounding the viewer and the viewer. The notification display unit 144 displays the current position of the viewer first in the image of the viewer's surroundings using the image acquired by the image pickup unit 151 and then displays the optimum viewing position so that the viewer can see how And provides information on whether the optimum viewing position can be reached by moving.

8, on the screen of the upper right flexible display panel 110, the notification display unit 144 displays the current viewing position and optimal viewing position of the viewer on the image based on the image acquired by the imaging unit 151 do. According to the contents displayed by the notification display unit 144, the viewer can recognize that the optimal viewing position can be reached by approaching the flexible display panel 110 more than the current position.

8 shows a case where the viewer moves the viewing position by the adjusted separation distance d closer to the flexible display panel 110 than the initial separation distance D in accordance with the information provided by the notification display unit 144 Respectively. As a result, the current viewing angle? C of the viewer is adjusted to 100 °. 8, the flexible display panel 110 provides the current location information of the viewer and the current location of the viewer, and the current position of the viewer can provide information of the optimum photographing.

9 is a diagram related to a configuration for controlling curvature according to an embodiment of the present invention.

Referring to FIG. 9, the upper left picture shows a state in which the current viewing angle of view? C with respect to the current distance D between the flexible display panel 110 and the viewer is 45 degrees. As described above, the sensor unit 152 senses the current distance D and the current angle of view calculation unit 142 calculates that the current viewing angle of view? C is 45 degrees. 9, when the content displayed on the flexible display panel 110 is news, the optimal viewing angle should be less than 30 degrees. Accordingly, the notification display unit 144 displays a message 'Adjust Curvature' in the pop-up window 110a on the flexible display panel 110, indicating that the current content is news.

The curvature adjusting unit 145 controls the shape deforming unit 120 to adjust the current viewing angle c to the optimal viewing angle when the current viewing angle c differs from the optimal viewing angle of view, . When the curvature adjusting unit 145 adjusts the curvature of the flexible display panel 110, it is possible to automatically satisfy the optimal viewing position condition even if the viewer does not change the viewing position.

According to an embodiment of the present invention, when the viewing angle of view c is smaller than the optimum viewing angle of view determined by the optimum angle of view determiner 143, the curvature adjuster 145 decreases the curvature to increase the viewing angle of view c. On the other hand, when the current angle of view? C is larger than the optimum viewing angle of view, the curvature adjuster 145 increases the curvature to decrease the current angle of view? C.

9, since the current viewing angle of view angle [theta] c is greater than 30 [deg.] Which is the optimum viewing angle of view at 45 [deg.], The curvature adjusting unit 145 increases the curvature so that the current viewing angle [ Down to 30 °. At this time, the distance D of the viewer is the same as before the curvature is adjusted. The curvature adjusting unit 145 adjusts the curvature by applying a signal to the shape deforming unit 120 so that the notification display unit 144 displays the popup window 110a of the flexible display panel 110, A message such as " Curvature has been adjusted so that the optimum viewing position can be displayed "

1, 2, 3: display device 110: flexible display panel
120:
140: control unit 141: mode control unit
142: current view angle calculating section 143: optimum view angle determining section
144: notification display section 145: curvature adjustment section
151: imaging section 152:
153: Remote control receiver

Claims (17)

A flexible display panel capable of implementing a planar mode and a curved surface mode;
A sensor unit for measuring a distance between the flexible display panel and a viewer;
A current view angle calculating unit for calculating a current view angle of view of the viewer based on a distance from the viewer;
An optimal view angle determining unit for calculating an optimal viewing angle of view corresponding to display contents of the flexible display panel;
A notification display unit for displaying information on the movement position or the curvature adjustment of the viewer based on the current viewing angle of view and the optimum viewing angle of view;
And a flexible display device. The method according to claim 1,
Wherein an optimum viewing angle of view corresponding to the content is calculated based on the display content and the discrimination visibility information storage capability. The method according to claim 1,
Wherein the notification display unit provides information on whether the viewer should decrease or increase the separation distance of the flexible display panel. The method of claim 3,
The notification display unit displays,
When the current viewing angle of view is smaller than the optimum viewing angle of view, displays information indicating that the distance should decrease,
And displays information indicating that the separation distance should be increased if the current viewing angle of view is larger than the optimum viewing angle of view. The method according to claim 1,
Wherein the notification display unit indicates that the curvature of the flexible display panel is changed based on the optimum viewing angle of view. The method according to claim 1,
And a curvature adjusting unit for generating a signal for changing a curvature of the flexible display panel,
Wherein the curvature control unit generates a signal that changes the curvature of the flexible display panel so that the viewing angle of view is the optimum viewing angle of view. The method according to claim 6,
The curvature-
Generating a signal for reducing the curvature of the flexible display panel when the current viewing angle of view is smaller than the optimum viewing angle of view,
And generates a signal for increasing the curvature of the flexible display panel when the current viewing angle of view is larger than the optimum viewing angle of view. The method according to claim 1,
And an image pickup section for picking up an image of the viewer and a surrounding environment,
Wherein the notification display unit indicates where the current viewing position and the optimum viewing position in the surrounding environment are. The method according to claim 1,
And the notification display unit displays the type of contents displayed on the flexible display device. The method according to claim 1,
Wherein the flexible display panel includes a liquid crystal element or an organic light emitting element. A sensing step of measuring a distance between the flexible display panel and the viewer;
A current view angle calculating step of calculating a current view angle of view of the viewer based on a distance from the viewer;
An optimum viewing angle determining step of calculating an optimal viewing angle of view corresponding to the display content of the flexible display panel;
An information display step of displaying information on the movement position or the curvature adjustment of the viewer based on the current viewing angle of view and the optimal viewing angle of view;
And a control unit for controlling the flexible display device. 12. The method of claim 11,
Wherein the optimum viewing angle angle corresponding to the content is calculated based on the display content and the discrimination visibility information storage capability. 12. The method of claim 11,
Wherein the notification display step provides information on whether the viewer should decrease or increase the separation distance of the flexible display panel. The method of claim 13, wherein
Wherein,
When the current viewing angle of view is smaller than the optimum viewing angle of view, displays information indicating that the distance should decrease,
And when the current viewing angle of view is larger than the optimum viewing angle of view, information indicating that the separation distance should be increased is displayed. 12. The method of claim 11,
And a curvature adjusting step of generating a signal for changing the curvature of the flexible display panel,
Wherein the curvature control step generates a signal that changes the curvature of the flexible display panel so that the viewing angle of view becomes the optimum viewing angle of view. 16. The method of claim 15,
Wherein the curvature adjusting step comprises:
Generating a signal for reducing the curvature of the flexible display panel when the current viewing angle of view is smaller than the optimum viewing angle of view,
And generates a signal for increasing the curvature of the flexible display panel when the current viewing angle of view is larger than the optimum viewing angle of view. 12. The method of claim 11,
Wherein the notification display step displays the current viewing position and the optimal viewing position in the surrounding environment.

Images