KR102062799B1 - Lighting Installation - Google Patents

Abstract

An illumination device is provided. The illumination device is provided on one side of the display unit, an external force sensing array for sensing an external force applied to the display unit, and a bending reinforcement provided on one side of the display unit to generate deformation in a direction opposite to the external force applied to the display unit. Including a portion, wherein the bending reinforcement portion, a first bending reinforcement portion of the first metal and a second metal having a larger coefficient of thermal expansion than the first metal is laminated in order, and the second metal and the first metal is laminated in order It may include a second bending reinforcement portion.

Description

Lighting Installation

The present invention relates to a lighting apparatus, and more particularly, to a lighting apparatus attached to one surface of a fiber and capable of suppressing warpage caused by an external force.

As display technology advances, products using flexible displays are being developed. Flexible display is a display device that can bend or bend by replacing glass substrate with plastic film among existing LCD and LED substrate materials.

The advantages of the flexible display can be used in various industries. Among them, wearable display technologies for attaching to one side of textile materials such as clothing, shoes, hats, bags, curtains, and ornaments are being actively researched.

However, there is a problem in that the flexible display is weak to shock. In particular, because people's clothes often cause warpage, display is often broken due to excessive warpage, which is pointed out as a major problem in commercialization.

One technical problem to be solved by the present invention is to provide a lighting device that can be attached to one surface of the fiber to emit light.

Another technical problem to be solved by the present invention is to provide a lighting device that can prevent damage to the display due to bending.

Another technical problem to be solved by the present invention is to provide a lighting device that measures the pressure itself in the lighting device to obtain information on the bending state, and provides a deformation force in the opposite direction.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problem, the present invention provides a lighting device.

According to one embodiment, the lighting device is provided on one side of the display unit, the external force sensing array for sensing an external force applied to the display unit, and provided on one side of the display unit, in the opposite direction to the external force applied to the display unit A bending reinforcement part for generating a deformation, wherein the bending reinforcement part includes a first bending reinforcement part in which a first metal and a second metal having a larger thermal expansion coefficient than the first metal are sequentially stacked, and the second metal and the first metal. The first metal may include a second bending reinforcement part stacked in order.

According to an embodiment of the present disclosure, the lighting apparatus further includes a control unit, wherein the control unit performs deformation through the first bending reinforcement unit when bending occurs in the first direction on the display unit through the external force sensing array. The controller may generate a deformation through the second bending reinforcement part when the display part is bent in the second direction through the external force sensing array.

According to an embodiment of the present disclosure, when an external force of a predetermined reference or more is measured through the external force sensing array, the controller may generate a deformation through the bending reinforcement unit.

According to an embodiment, the display unit, the external force sensing array, and the bending reinforcement unit may be sequentially stacked.

According to an embodiment, the display unit may be attached to a cloth.

According to one embodiment. The first flexural reinforcement part and the second flexural reinforcement part may be alternately disposed along a surface direction of the display part.

According to an embodiment of the present invention, the illumination device is provided on one side of the display unit, an external force sensing array for sensing an external force applied to the display unit, and provided on one side of the display unit, and is opposed to the external force applied to the display unit. A bending reinforcement part for generating a deformation in a direction, wherein the bending reinforcement part comprises: a first bending reinforcement part in which a first metal and a second metal having a larger thermal expansion coefficient than the first metal are sequentially stacked, and the second metal and The first metal may include a second bending reinforcement part sequentially stacked.

This prevents the lighting device from being damaged due to excessive bending of the fiber material to which the lighting device is attached. In particular, the display unit may be damaged to prevent damage to the user's clothes or skin.

1A is a view for explaining a lighting apparatus according to an embodiment of the present invention.
1B is a view for explaining a state in which the lighting apparatus according to the embodiment of the present invention emits light.
FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.
3 is a cross-sectional view of the lighting apparatus according to the embodiment of the present invention in the + Z axis direction.
4 is a cross-sectional view of a display unit according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a method of operating a lighting apparatus according to an embodiment of the present invention.
6 and 7 are diagrams for explaining in detail the operation method step S141 of the lighting apparatus according to an embodiment of the present invention.
8 and 9 are diagrams for explaining in detail the operation method step S145 of the lighting apparatus according to an embodiment of the present invention.
10 is a view for explaining that the plurality of external force sensing array and the flexural reinforcement are electrically connected to the control unit according to an embodiment of the present invention.
FIG. 11 is a view for explaining a state in which the first bending reinforcement part independently controls the degree of thermal deformation according to an external force.
FIG. 12 is a view for explaining a state in which the second bending reinforcement part independently controls the degree of thermal deformation according to the magnitude of the external force.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical idea of the present invention is not limited to the exemplary embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete, and that the spirit of the present invention can be sufficiently delivered to those skilled in the art.

In the present specification, when a component is mentioned to be on another component, it means that it may be formed directly on the other component or a third component may be interposed therebetween. In addition, in the drawings, the shapes and thicknesses of the regions are exaggerated for the effective description of the technical content.

In addition, in various embodiments of the present specification, terms such as first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. In addition, the term 'and / or' is used herein to include at least one of the components listed before and after.

In the specification, the singular encompasses the plural unless the context clearly indicates otherwise. In addition, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, element, or combination thereof described in the specification, and one or more other features or numbers, steps, configurations It should not be understood to exclude the possibility of the presence or the addition of elements or combinations thereof. In addition, the term "connection" is used herein to mean both indirectly connecting a plurality of components, and directly connecting.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 1a is a view for explaining the lighting apparatus according to an embodiment of the present invention, Figure 1b is a view for explaining the appearance of the lighting apparatus according to an embodiment of the present invention, Figure 2 is A- of FIG. 3 is a cross-sectional view of the lighting apparatus according to the embodiment of the present invention in the + Z axis direction, and FIG. 4 is a cross-sectional view of the display unit according to the embodiment of the present invention.

According to one feature of the present invention with reference to Figures 1 to 4, it is possible to provide an illumination device 1000 is attached to one side of the fiber material, such as cloth, to prevent excessive bending of the fiber.

According to an embodiment of the present invention, the bending size and / or direction of the fiber is sensed by the external force through the external force sensing array 200, and the bending reinforcement 300a in consideration of the magnitude and / or direction of the sensed external force. , 300b) may be bent. Through this, the display unit 100 may be prevented from being excessively bent.

Hereinafter, the configuration of the present invention will be described with reference to FIGS.

1A and 1B, the lighting apparatus 1000 may be attached to one surface of a fiber. In detail, as shown in FIG. 1A, the lighting apparatus 1000 according to an embodiment of the present invention may be attached to a cloth, and may emit light according to a user's manipulation as shown in FIG. 1B. Accordingly, the lighting apparatus 1000 according to an embodiment of the present invention can emit light even on a flexible cloth.

Referring to FIG. 2, the lighting apparatus 1000 may include at least one of the display unit 100, the external force sensing array 200, the bending reinforcement units 300a and 300b, and a controller (not shown). Hereinafter, each configuration will be described.

The display unit 100 displays an image desired by a user, and may be attached to one surface of the fiber as described above. In addition, the display unit 100 may function as a frame in which the external force sensing array 200, the bending reinforcement units 300a and 300b, and a controller (not shown) are provided.

The display unit 100 may use any one of a reflective liquid crystal display, an organic material EL (Electro Luminescence), an inorganic material EL, and an electrophoretic display (EPD).

According to an example, the display unit 100 may be flexible. That is, the display unit 100 may be bent together with the fiber.

Referring to FIG. 4, the display unit 100 includes a substrate 110, a conductive film layer 120, a first back electrode layer 130, an insulating layer 140, a light emitting material 150, and a second back electrode layer ( 160).

The substrate 110 may be made of a transparent plate plastic material. Specifically, the substrate 110 may be made of any one or more of polyethersulfone (PES), polyethylenetherephtalate (PC), polyethylenenaphthalate (PEN), AryLite, and polynorbonene.

The conductive film layer 120 is a transparent coating layer coated with a conductive material of less than 100nm, it may be made of a material having excellent sheet resistance and transmittance. Specifically, the conductive film layer 120 is made of ITO (InO2: Sn, SnO2: F), silver nanofibers, metal mesh (copper, silver, gold), graphene, conductive polymers (PEDOT: PSS) and carbon nanotubes It may be made of any one or more materials.

The first back electrode layer 130 may be coated on one surface of the conductive film. Specifically, the first back electrode layer 130 may be coated with at least one metal material of molybdenum, nickel, and copper. According to an embodiment, the back electrode layer 130 may be formed in a single layer or multiple layers.

The insulating layer 140 may serve to insulate the back electrode layer. The insulating layer 140 may be made of insulation ink having insulation. Specifically, the insulating layer 140 may be manufactured by printing the insulating ink and drying the printed insulating ink. According to an embodiment, the insulating ink may include at least one of a thermosetting ink, a thermoplastic ink, and a UV curable ink, depending on the constituent material.

  The light emitting layer 150 may be composed of a phosphor powder, and may be prepared by mixing the phosphor powder and a binder.

Since the second back electrode layer 160 has the same configuration and role as the first back electrode layer 130, a description thereof will be omitted.

According to an embodiment, the display unit 100 may include the substrate 110, the conductive film layer 120, the first back electrode layer 130, the insulating layer 140, the light emitting material 150, and the The second back electrode layer 160 may be sequentially stacked, for example, in the −Z axis direction.

Referring back to FIG. 2, the display unit 100 may be attached to one side of the fiber as described above, and specifically, may be attached to any fiber such as cloth, sweater, curtain, wallpaper, and the like.

The external force sensing array 200 may measure an external force applied to the display unit 100. In the present specification, the external force sensing array 200 may refer to a collection of sensors (external force sensors) capable of measuring the magnitude and direction of the force with respect to the external force.

According to an embodiment, the external force sensing array 200 may include substrate layers made of polyester or polyimide film such as polyethylene terephthalic acid and conductive ink layers provided between the substrate layers. Due to the structural feature, when a force or pressure is applied to the external force sensing array 200 in the vertical direction, the electrical resistance value of the conductive ink film is changed, and the magnitude and position of the pressure is detected by detecting the change in the electrical resistance value. Can be detected. In contrast, the external force sensing array 200 may be formed of a strain sensor.

The external force sensing array 200 may be stacked in a bottom surface of the display unit 100, for example, in the −Z axis direction. In detail, one surface of the external force sensing array 200 may be in contact with one surface of the display unit 100, and may sense the magnitude and / or direction of the external force applied to the display unit 100.

More specifically, the external force sensing array 200 may form an array in the surface direction of the display unit 100. That is, the external force sensor may be arranged in a matrix shape on the XY surface of the display 100, as shown in FIG.

The bending reinforcement parts 300a and 300b may be bent in a predetermined size in a predetermined direction according to the instruction of the controller. For example, the bending reinforcement parts 300a and 300b may be bent in a direction opposite to an external force applied to the display part 100. Through this, damage of the display unit 100 can be minimized. In detail, the bending reinforcement parts 300a and 300b may be bent in a direction opposite to the external force when an external force of a predetermined reference or more is sensed in the external force sensing array 200.

According to an embodiment, the bending reinforcement parts 300a and 300b may include the first bending reinforcement part 300a and the display part providing bending in an opposite direction to an external force acting in the direction in which the display part 100 is convex. The second bending reinforcement 300b may be provided to provide bending in a direction opposite to the external force in the direction in which the 100 is concave.

The first flexural reinforcement 300a may be formed by coupling the second metal 330a to a lower end of the first metal 310a. In other words, the first flexural reinforcement 300a may sequentially couple the first metal 310a and the second metal 330a in the −Z direction. In this case, the thermal expansion coefficient of the first metal 310a may be smaller than the thermal expansion coefficient of the second metal 330a. Through this, the first flexural reinforcement 300a may be warped in a concave direction when thermal deformation, that is, in the + Z axis direction.

The second flexural reinforcement 300b may be formed by coupling the first metal 310b to a lower end of the second metal 330b. In other words, the second bending reinforcement part 300b may sequentially couple the second metal 330b and the first metal 310b in the -Z direction. In this case, the thermal expansion coefficient of the first metal 310b may be smaller than the thermal expansion coefficient of the second metal 330b. Through this, the second flexural reinforcement 300b may be warped in a convex direction when the thermal deformation occurs, that is, in the -Z axis direction.

  As described above, since the bending reinforcement portions 300a and 300b have a bimetal structure, simpler manufacturing may be possible. In this case, an alloy of iron-nickel having a relatively low coefficient of thermal expansion may be used for the first metals 310a and 310b, whereas the nickel-manganese-iron having a high coefficient of thermal expansion may be used for the second metals 330a and 330b. An alloy of any one of nickel, molybdenum-iron, and nickel-manganese-copper may be used. According to an embodiment, when the first metals 310a and 310b are manufactured of an iron-nickel alloy, the first metals 310a and 310b may be composed of 50 to 70% by weight of iron and 30 to 50% by weight of nickel.

According to an embodiment, the bending reinforcement parts 300a and 300b may be stacked in the bottom surface of the external force sensing array 200, for example, in the −Z axis direction. The first flexural reinforcement 300a and the second flexural reinforcement 300b may be alternately disposed along the surface direction of the display 100. Specifically, the second flexural reinforcement 300b may be disposed at a front, rear, left, or right adjacent position with respect to the first flexural reinforcement 300a, and center the second flexural reinforcement 300b. The first flexural reinforcement 300a may be disposed at a position adjacent to the front, rear, left, and right nearest sides.

Although not described in the drawings, the bending reinforcement parts 300a and 300b may further include a heating electrode. The heating electrode may induce thermal deformation of the first metals 310a and 310b and the second metals 330a and 330b by heating the bending reinforcement part.

The controller is electrically connected to the display unit 100, the external force sensing array 200, and the bending reinforcement units 300a and 300b, and connects the external force sensing array 200 and the bending reinforcement units 300a and 300b to each other. Can be controlled.

For example, the controller may obtain a signal for the magnitude and / or direction of the external force from the external force sensing array 200. In addition, the controller may control the bending reinforcement parts 300a and 300b based on a signal for the magnitude and / or direction of the external force.

Specifically, the controller may derive the direction of the external force by comparing the magnitude and the direction of the external force measured by the at least one external force sensing array 200.

According to an embodiment, when the display unit 100 is bent in a convex direction, that is, in the -Z axis direction, the first bending reinforcement part 300a deformed in a direction opposite to the direction in which the display unit 100 is convex. ) Can be heated.

On the contrary, when the display 100 is bent in the concave direction, that is, the + Z axis direction, the second bending reinforcement 300b is deformed in a direction opposite to the direction in which the display 100 is concave. can do.

According to an embodiment, a direction in which the display unit 100 is convex, for example, a -Z axis direction may be defined as a first direction, and a direction in which the display unit 100 is concave, for example, a + Z axis. The direction may be defined as the second direction. In other words, the controller may heat the first bending reinforcement part 300a when the display part 100 is deformed in the first direction, and when the display part 100 is deformed in the second direction, 2 Bending reinforcement part 300b can be heated.

According to an embodiment, the lighting apparatus 1000 may further include a power supply. The power supply unit may inject electrical energy into the heating electrode to induce thermal deformation of the bending reinforcement unit. In addition, the power supply unit may supply electrical energy to the display unit 100.

The lighting apparatus 1000 according to the embodiment of the present invention has been described above. Hereinafter, the bending prevention step of the lighting apparatus will be described with reference to FIGS. 5 to 9.

FIG. 5 is a flowchart illustrating a method of operating a lighting apparatus according to an exemplary embodiment of the present invention. FIG. 6 is a view for explaining that the display unit is warped in a first direction in S141, and FIG. 7 is the first in S141. FIG. 8 is a view for explaining a state in which the bending reinforcement part is thermally deformed, FIG. 8 is a view for explaining that the display is warped in a second direction in S145, and FIG. It is a figure for following.

Referring to FIG. 5, the warpage prevention step of the lighting apparatus may include a standby step (S110), a step of determining whether an external force above a reference level is detected (S120), a step of determining an direction of an external force (S130), and a first bending reinforcement unit. It may include any one or more of the step (S141) and the step (S145) of heating the second bending reinforcement.

Step S110

The standby step (S110) is a step in which the lighting device 1000 is in a standby state. That is, the controller may control the lighting apparatus 1000 to the standby state. In this case, the standby state may include both a state in which no external force is applied to the lighting apparatus 1000 or a case in which the external force sensing array 200 detects an external force but the detected external force is equal to or less than a reference point.

Step S120

Determining whether the external force is detected above the reference (S120) may refer to a state in which an external force is applied to the lighting apparatus 1000, that is, a state in which the external force sensing array 200 measures the external force above the reference point. In other words, the controller may determine whether an external force greater than or equal to a reference occurs based on a sensing value of the external force sensing array 200.

At this time, the lighting device 1000 may be warped due to the external force of the reference point or more.

According to an embodiment, the lighting device 1000 may be referred to as a bending state in which the bending occurs due to an external force greater than or equal to the reference point.

Step S130

Determining the direction of the external force (S130) is a step in which the control unit derives the direction of the external force measured in S120 through the external force sensing array 200 when the lighting device 1000 is in a bending state.

As described above, the controller determines whether the display unit 100 is warped in the first direction or the second direction in consideration of the direction of the external force measured by the external force sensing array 200. Can be.

Step S141

In the step S141 of heating the first bending reinforcement part, when the display part 100 is bent in a first direction, that is, in the −Z axis direction, the first bending reinforcement part 300a is heated to generate warpage. Step to calibrate.

Specifically, referring to FIG. 6, when an external force acts on the display unit 100 and warpage occurs in the first direction, the external force sensing array 200 provided at the lower end of the display unit 100 may have a corresponding position. The magnitude of the external force (F) and the direction of the external force can be quantified and measured. Through this, the control unit may quantify the size (F) of the external force for each position through a plurality of the external force sensing array 200 located in the bending generation portion.

Although not shown in the drawing, information on the magnitude F of the external force measured for each position may be transmitted to the controller.

Referring to FIG. 7, the controller may heat the first flexural reinforcement 300a positioned at a point where the magnitude F of the external force is greater than or equal to the standard among the flexural reinforcement 300a and 300b.

In other words, when the display is warped in the first direction, the controller may be configured to move the first bending reinforcement 300a at a point where the magnitude F of the first bending reinforcement 300a is greater than or equal to a reference point. Can be heated.

For example, the first flexural reinforcement 300a positioned at both ends of the first flexural reinforcement 300a illustrated in FIG. 7 has thermal deformation because the external force F is greater than or equal to a reference. The first flexural reinforcement 300a located in the thermal deformation may not occur because the magnitude (F) of the external force is less than the reference.

As a result, the display unit 100 which is warped in the first direction may receive a deformation force in an inverse direction U of the first direction, for example, in the + Z axis direction, and thereby the display unit 100. Can be corrected. In addition, it is possible to prevent the failure of the lighting apparatus 1000 due to excessive bending.

Step S145

In the step S145 of heating the second bending reinforcement part, when the display part 100 is bent in a second direction, that is, in the + Z axis direction, the second bending reinforcement part 300b is heated to generate warpage. Step to calibrate.

Specifically, referring to FIG. 8, when an external force is applied to the display unit 100 and warpage occurs in the second direction, the external force sensing array 200 provided at the lower end of the display unit 100 may have a corresponding position. The magnitude of the external force (F) and the direction of the external force can be quantified and measured. Through this, the control unit may quantify the size (F) of the external force for each position through a plurality of the external force sensing array 200 located in the bending generation portion.

Although not shown in the drawing, information on the magnitude F of the external force measured for each position may be transmitted to the controller.

Referring to FIG. 9, the controller may heat the second flexural reinforcement 300b positioned at a point where the magnitude F of the external force is greater than or equal to the standard among the flexural reinforcement parts 300a and 300b.

In other words, when the display is warped in the second direction, the controller may be configured to move the second bending reinforcement 300a at the point where the magnitude F of the second bending reinforcement 300b is greater than or equal to a reference value. May optionally be heated.

For example, the first flexural reinforcement 300b positioned at both ends of the second flexural reinforcement 300b illustrated in FIG. 9 has thermal deformation because the external force F is greater than or equal to a reference. The first flexural reinforcement 300b located in the thermal deformation may not occur because the magnitude (F) of the external force is less than the reference.

As a result, the display unit 100 that is warped in the second direction may receive a deformation force in an inverse direction D of the second direction, for example, a -Z axis direction, and thereby the display unit 100. Can be corrected. In addition, it is possible to prevent the failure of the lighting apparatus 1000 due to excessive bending.

According to the embodiment of the present invention described above, the illumination device 1000 corresponds to the bending of the display unit 100, the external force (F) of each portion in which the bending occurs through the plurality of external force sensing array 200 ) Can be measured. In addition, when the external force sensing array 200 measures an external force greater than or equal to the reference, the external force sensing array 200 may provide a deformation force through the first flexural reinforcement 300a or the second flexural reinforcement 300b.

Unlike the embodiment, when the deformation force cannot be provided, the lighting apparatus 1000 may be easily damaged due to the bending. However, the present invention may generate a deformation in a direction corresponding to the occurrence of the warp through the first bending reinforcement 300a or the second bending reinforcement 300b, through which the lighting device 1000 is bent It can be safely protected from occurrence.

In addition, when the control unit does not selectively operate the first bending reinforcement 300a or the second bending reinforcement 300b corresponding to the bending direction by grasping the bending direction of the display unit 100. For example, when one or more of the second bending reinforcement 300b is operated when the bending occurs in the first direction, or when the bending occurs in the second direction, among the first bending reinforcement 300a. In the case of operating any one or more, the deflection reinforcement portions 300a and 300b may not be able to effectively offset the deflection of the display portion 100 because the deflection reinforcement portions 300a and 300b do not coincide with each other. .

However, according to this embodiment, the control unit grasps the bending direction of the display unit 100 and selectively selects the first bending reinforcement 300a or the second bending reinforcement 300b corresponding to the bending direction. Can be operated. Through this, the occurrence of warpage of the display unit 100 can be suppressed and damage can be prevented. Furthermore, by preventing the damage of the display unit 100, it is possible to prevent the clothes in contact with the display unit 100 from being damaged and to protect the safety of the user.

6 to 9 have been described with reference to the operating method of the lighting apparatus according to an embodiment of the present invention. Hereinafter, a detailed method of controlling the degree of thermal deformation of a plurality of flexural reinforcement units will be described with reference to FIGS. 10 to 13.

10 is a view for explaining that the plurality of external force sensing array and the bending reinforcement is electrically connected to the control unit according to an embodiment of the present invention, Figure 11 is the first bending reinforcement is independent of the degree of thermal deformation according to the size of the external force FIG. 12 is a view for explaining a state in which the second bending reinforcement part independently controls the degree of thermal deformation according to the magnitude of the external force.

Referring to FIG. 10, the controller 400 may be electrically connected to the plurality of external force sensing arrays 200 and the plurality of bending reinforcement parts 300a and 300b.

In detail, the controller 400 may receive external force measurement values at a point where each external force sensing array 200 is located through a plurality of external force sensing arrays 200. In this way, the controller 400 may derive the place where the external force is measured the greatest and the location where the external force is measured the most by comparing the external force values measured at each position.

In addition, the controller 400 may independently control the bending reinforcement parts 300a and 300b provided at the corresponding positions according to the measured external force values at the respective positions. For example, when the external force of a specific position is measured relatively higher than the peripheral force of the peripheral portion, the controller 400 may be provided to the first flexural reinforcement 300a or the second flexural reinforcement 300b provided at the corresponding position. A large amount of thermal energy may be injected to induce thermal deformation to be activated. On the contrary, when the external force at a specific position is measured to be relatively low compared to the peripheral force, a small amount of thermal energy is injected into the first flexural reinforcement 300a or the second flexural reinforcement 300b provided at the corresponding position and thermal deformation. It can be controlled to generate a small amount.

In another aspect, the controller 400 may control not to supply thermal energy to the first flexural reinforcement 300a or the second flexural reinforcement 300b provided at a position at which the external force greater than the reference is not sensed. have. On the other hand, the control unit 400 supplies thermal energy to the first flexural reinforcement 300a or the second flexural reinforcement 300b provided at the position where the external force is sensed, and differentially according to the magnitude of the external force. It can be controlled to supply thermal energy.

Referring to FIG. 11, the controller controls the first bending reinforcement 300a or the second bending reinforcement 300b at the corresponding position according to the magnitude F of the external force measured by the external force sensing array 200. Thermal deformation can be controlled. For example, when the display unit 100 is warped in the first direction, the controller may control a small amount of heat deformation to occur in the first flexural reinforcement 300a ′ positioned around the center of the flexion. The first flexural reinforcement 300a '' positioned at the outer periphery may be controlled to generate a large amount of heat deformation.

Specifically, when the external force sensing array 200 measures an external force of a relatively small magnitude around the flexural center, the controller is a relatively small amount of thermal energy to the first flexural reinforcement 300a 'located around the flexural center. Can be provided. As a result, a relatively small amount of heat deformation may occur in the first bending reinforcement part 300a 'positioned around the bending center.

On the other hand, when the external force sensing array 200 measures a relatively large external force at the bending periphery, the control unit may provide a relatively large amount of thermal energy to the first bending reinforcement part 300a '' positioned at the bending periphery. have. Through this, the first flexural reinforcement 300a ″ positioned at the outer periphery may have a relatively large amount of heat deformation.

Referring to FIG. 12, when the display unit 100 is warped in the second direction, the control unit may generate a small amount of heat deformation in the second bending reinforcement part 300b ′ positioned around the center of the warp. The second bending reinforcement 300b ″ positioned at the outer corner of the bending may be controlled to generate a large amount of heat deformation.

Specifically, when the external force sensing array 200 measures the external force of a relatively small size around the bending center, a relatively small amount of heat energy to the second bending reinforcement 300b 'located around the bending center. Can be provided. As a result, a relatively small amount of heat deformation may occur in the second flexural reinforcement part 300b 'positioned around the flexural center.

On the other hand, when the external force sensing array 200 measures a relatively large external force at the bending periphery, the control unit may provide a relatively large amount of thermal energy to the second bending reinforcement 300b ″ positioned at the bending periphery. have. As a result, a relatively large amount of heat deformation may occur in the first flexural reinforcement part 300b ″ positioned at the outer flexure.

According to the method for controlling the degree of thermal deformation described above, the control unit analyzes the magnitude (F) of the external force measured by each of the external force sensing array 200, the bending reinforcement portion (300a, 300b) corresponding to the bending direction The degree of thermal deformation of can be controlled independently. Specifically, a large amount of thermal deformation of the bending periphery with a large magnitude of external force F may be induced, and a small amount of thermal deformation may be induced around the bending central portion with a small magnitude of external force F. This makes it possible to efficiently control the occurrence of warpage.

As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment, Comprising: It should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: display unit
200: external force sensing array
300: bending reinforcement
300a: first bending reinforcement
300b: second bending reinforcement
310: first metal
330: second metal
400: control unit
1000: lighting device

Claims (7)

An external force sensing array provided on one side of the display unit to sense an external force applied to the display unit; And
Is provided on one side of the display, bending reinforcement for generating a deformation in the opposite direction to the external force applied to the display;
The bending reinforcement part includes a first bending reinforcement part in which a first metal and a second metal having a larger thermal expansion coefficient than that of the first metal are laminated in order, and a second bending in which the second metal and the first metal are laminated in order. Including reinforcement,
And the first bending reinforcement part and the second bending reinforcement part are alternately disposed along the surface direction of the display part.
The method of claim 1,
Further comprising a control unit,
The controller may generate a deformation through the first bending reinforcement part when the display part is bent in the first direction through the external force sensing array,
And the control unit generates a deformation through the second bending reinforcement part when the bending in the second direction occurs in the display part through the external force sensing array.
The method of claim 2,
The control unit,
And generating deformation through the bending reinforcement part when an external force of a predetermined reference or more is measured through the external force sensing array.
The method of claim 3, wherein
The control unit,
Lighting device for independently controlling the degree of warpage of the bending reinforcement according to the external force measured in the external force sensing array.
The method of claim 1,
And the display unit, the external force sensing array, and the bending reinforcement unit are sequentially stacked.
The method of claim 1,
The display unit, the lighting device attached to the cloth.
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