KR102079967B1 - Curved Display Device and Curvature Adjusting Device there for - Google Patents

Abstract

The present invention relates to a curved curvature display device capable of adjusting the curvature of the curved display device, and a curvature adjusting device therefor, the manpower portion being fixed to a specific area behind the display panel and applying an attractive force to the corresponding area of the panel; The motor assembly may include a motor assembly for applying and releasing the attraction force by pulling the attraction portion, and a motor controller for controlling the rotation amount of the motor included in the motor assembly to change the curvature of the panel.

Description

Curved Display Device and Curvature Adjusting Device there for}

The present invention relates to a curved display device and a curvature adjusting device therefor.

Recently, a curved display device, which is being developed, refers to a display device that is curved by a certain curvature so that a distance between a user and a display device in the center of the display device is constant, unlike a general flat panel display.

In addition, since the display characteristics and the user's screen immersion are changed according to the curved display device bending characteristics or the curvature or the radius of curvature of the curved surface, the discussion of the optimum curvature is ongoing.

Meanwhile, the curved display device to date is mainly implemented in a display device such as an organic light emitting diode (OLED) TV and the like, and generally has a fixed curvature in the manufacturing process of the display device.

That is, for example, by bonding an OLED panel having bending characteristics to a curved metal base having a predetermined curvature or a back cover, the display device having a fixed curvature may be manufactured, and the fixed curvature is usually It can be determined from 4000R (circular arc with a radius of 4 meters) to 500R.

However, in large TVs, there is a need to variably adjust the curvature of the curved display device according to the user's preference, the number of viewers, etc. In the conventional fixed curvature curved display device, the optimum fixed curvature for each manufacturer is increased. It can be seen even if you see something else.

In other words, the necessity of adjusting the curvature of the curved display device in real time within a certain range has emerged, but until now, such curvature-variable curved display devices, curvature-variable devices or curvature adjusting technologies have not been developed. .

In this background, it is an object of the present invention to provide a curvature variable curved display device capable of adjusting the curvature of a curved display device and a curvature adjusting device therefor.

Another object of the present invention is to provide a curvature adjusting device capable of adjusting the curvature of a curved display device using an electric power device such as an electric motor.

Another object of the present invention is to provide a curvature adjusting device of a curved display device including a attraction portion connected to a rear panel of the display device and a motor assembly for tensioning or relaxing the attraction portion.

In order to achieve the above object, in one aspect, the present invention provides a panel, a manpower portion which is fixed to a specific region behind the panel and applies a manpower to the corresponding region of the panel, and by pulling the manpower portion A curvature adjusting device including a motor assembly for applying and releasing, a motor control unit for controlling an amount of rotation of a motor included in the motor assembly to change the curvature of the panel, and a rear cover provided behind the curvature adjusting device. A curved display device is provided.

In another aspect, the present invention, the attraction portion is fixed to a specific area behind the display panel panel to apply the attraction to the corresponding area of the panel, the motor assembly for applying and releasing attraction by pulling the attraction portion, and the curvature of the panel To provide a curvature adjusting device for a curved display device including a motor control unit for controlling the amount of rotation of the motor included in the motor assembly.

As described above, according to the present invention, by adjusting the curvature of the curved display device in real time according to the needs of the user, there is an effect that can provide an optimal viewing environment according to the user's preferences, number of users, viewing distance, etc. .

1 illustrates an example of a bending or curved shape of a curved display device.
FIG. 2 is a block diagram illustrating the structure of a variable curvature display device according to an exemplary embodiment of the present invention. FIG.
3 illustrates a curvature adjusting device and a variable curvature display device according to a first embodiment of the present invention, in which FIG. 3A is a cross-sectional view and FIG. 3B is a rear view.
4 illustrates a curvature adjusting device and a variable curvature display device according to a second exemplary embodiment of the present invention. FIGS. 4A and 4B are cross-sectional views and FIG. 4C is a rear view.
5 is a detailed functional block diagram of a motor assembly used in the first and second embodiments.
FIG. 6 illustrates specific embodiments of the reduction unit used in the motor assembly, and FIG. 6A illustrates a deceleration structure of a worm and a worm wheel, and FIG. 6B illustrates a deceleration structure of a simple gear type. .
FIG. 7 is a diagram showing a result of forming a curved surface on a panel when the curvature adjusting device according to the first embodiment is used.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only to distinguish the components from other components, and the terms are not limited in nature, order, order or number of the components. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but between components It is to be understood that the elements may be "interposed" or each component may be "connected", "coupled" or "connected" through other components.

FIG. 1 is a diagram illustrating bending or bending of a curved display device 100.

Referring to FIG. 1, the curved display device 100, unlike a general flat panel display, refers to a display or a device including the same, which may be bent or bent at a predetermined curvature without special damage through a substrate.

Meanwhile, “bending” or curved of the curved display device 100 according to the exemplary embodiment of the present invention refer to a state in which the flat state is not flat, as shown in FIG. A first bending type that bends or partially bends the curved display device 100 in the horizontal or vertical direction as shown in FIG. 1 (b), and twists the curved display device 100 as shown in FIG. ) May be broadly classified into a second bending type and the like.

Meanwhile, the curved display device to which an embodiment of the present invention is applied is a curved shape having a total curvature in one of the horizontal or vertical directions as shown in FIG. 1B rather than the twisted shape as shown in FIG. Is more general, but not limited to.

At this time, the curvature (R) of the variable curvature display device to which an embodiment of the present invention is applied may be defined as a radius of curvature indicating an arc curvature of a circle having a radius R, but is not limited thereto.

FIG. 2 is a block diagram illustrating the structure of a variable curvature display device according to an exemplary embodiment of the present invention. FIG.

The variable curvature display device according to an exemplary embodiment of the present invention may vary the curvature of the display device by using a panel assembly 210 including a panel and a back cover bonded to the panel and a rotational force of a motor. It is configured to include a curvature adjusting device for 200, the curvature adjusting device 200 is again fixed to a specific area of the rear of the panel assembly to form the shape of a wire, bar (bar), etc. to apply the attraction force to the corresponding area of the panel The attraction portion 250, the motor assembly 240 for applying and releasing the attraction force to the panel specific portion by pulling the attraction portion, and the rotation of the motor included in the motor assembly to change the curvature of the panel It may include a motor control unit 220 for controlling the total amount.

In addition, the motor assembly 240 is again connected to the motor, the motor shaft of the motor and a reduction gear including a deceleration output shaft for providing an output of a rotation speed less than the motor rotation speed, and connected to the deceleration output shaft, the attraction portion is wound It may be configured to include a winding of the wheel (Wheel) or pulley (Pulley) form.

The detailed configuration of the curvature adjusting device 200 will be described again with reference to various embodiments below with reference to FIG. 3.

The motor controller 220 generates a motor rotation control signal for adjusting the curvature of the panel by a motor included in at least one motor assembly, and provides the motor control signal to control the rotation of the motor. At this time, the motor rotation control signal may be different for each motor. That is, the curvature of the panel can be reduced by applying a greater attraction force to the center of the panel by making the motor rotation amount of the motor assembly disposed behind the panel center larger than the rotation amount of the motor behind the panel edge. In other words, by pulling the panel center portion more than the edges, the panel is bent more.

The motor rotation control signal generated by the motor controller 22 and provided to the motor may be, for example, a signal based on a pulse width modulation (PWM) method, but is not limited thereto.

The motor control unit 220 may be represented as a T-Con, may be included in the main control unit or control circuit such as a TV, or may be implemented as an independent control unit or control circuit separate from the main control unit. .

3 illustrates a curvature adjusting device and a variable curvature display device according to a first embodiment of the present invention, in which FIG. 3A is a cross-sectional view and FIG. 3B is a rear view.

In the display device according to the first embodiment, a display panel 310 such as an OLED and a back cover 320 for holding and protecting the panel in a flat state are bonded thereto. The three curvature adjustment apparatus 300 is arrange | positioned at the back.

Each curvature adjusting device 300 according to the first embodiment of the present invention is a wire 350 as an attractive part capable of providing a attraction to a specific area of the panel and pulling the corresponding part backward, and the wire 350 connected to the motor. It may include a motor assembly 340 for controlling the degree of pulling the motor rotation, and may further include a fixing portion 360 is fixed to the back cover 320 is connected to one end of the wire 350, the attraction portion. .

In addition, the curvature adjusting device according to the first embodiment includes one wire 350 and the motor assembly 340 at the rear part of the center of the panel, and one wire 350 'and 350 "at the rear part of the left and right edges of the panel. And motor assemblies 340 ′ and 340 ″ wires are arranged to have three wires in total, but the present invention is not limited thereto and may be provided in a plurality of five or seven wires.

In addition, in FIG. 3, the curvature adjusting device is disposed only at the center portion of the panel when viewed in the vertical direction, but is not limited thereto. For example, a plurality of wires and a motor assembly may be disposed at the upper and lower portions of the panel, respectively. There will be.

The wire 350, which is an attractive part of the curvature adjusting device 300 may be a metal material, but is not limited thereto. The attractive part does not necessarily need to be a wire, and has a shape such as a bar, and has a specific area behind the panel and the motor assembly. There will be no shape and material limitations as long as they can be connected in between to provide attraction or repulsion to the panel area in question.

In addition, as shown in FIG. 3B, the motor assemblies 340, 340 ′, and 340 ″ are again connected to the motors 341, 341 ′, and 341 ″ and the motor shaft to provide an output smaller than motor rotation. (342, 342 ', 342 ”) and wheels or pulleys (343, 343', 343”) as windings which are connected to the reduction gear output and serve to wind the wires 350, 350 ', 350 ”. can do.

The reduction unit 342 provides an output in which the amount of rotation of the rotating motor shaft is reduced at an arbitrary reduction ratio in accordance with the motor rotation control signal provided by the motor control unit, which will be described in more detail with reference to FIGS. 5 and 6.

Meanwhile, the fixing part 360 is fixed to the back cover 320 so that one end of the wire 350 which is the attraction part is connected, and the fixing part is pulled by the wire so that the corresponding area of the back cover and the panel joined thereto is moved backward. It serves as a support. The fixing parts 360 and 360 ′ 360 ″ may be formed of a plate-like structure made of plastic and fixed to the back cover, but are not limited thereto.

In the variable curvature display device of the first embodiment as shown in FIG. 3, the motor control unit may control three motors at once, and the motor 341 disposed at the left and right edges of the rotational amount of the motor 341 disposed at the center rear portion of the panel. 341 ”), by providing greater attractive force to the panel center region, the curvature of the panel can be adjusted. In other words, the more the center area of the panel is pulled, the smaller the radius of curvature of the panel is.

Of course, the panel assembly 210 composed of the panel 310 and the back cover 320 in the present embodiment is initially maintained in a flat state (flat state), the manpower provided to the manpower portion for the curved surface is removed It would be desirable to have a recovery characteristic to return to the original flat state. Therefore, when the tensile force of the wire provided for the curved surface is removed by the reverse rotation of the motor and the wire is stretched, the wire is returned to its original flat state and becomes a flat display state.

On the other hand, the display device according to the first embodiment further includes a rear cover (330) behind the panel, the motor assembly (340. 340 ', 340 ") is a wire (350. 350', 350") The motor assemblies 340. 340 'and 340' may be fixed to the rear cover 330 described above in order to provide bending force to the panel by pulling.

4 illustrates a curvature adjusting device and a variable curvature display device according to a second exemplary embodiment of the present invention. FIGS. 4A and 4B are cross-sectional views and FIG. 4C is a rear view.

In the display device according to the second embodiment, a display panel 310, such as an OLED, and a back cover 320 for holding and protecting the panel in a flat state are bonded thereto. 330 is the same as in the first embodiment, but unlike the first embodiment including three motors, a motor assembly, and the like, in the second embodiment of FIG. 4, one curvature adjusting device 400 is provided. do.

Meanwhile, in the first embodiment, the curvature of the panel is adjusted by independently controlling a plurality of motor assemblies. In the second embodiment, since only one motor and the motor assembly are used, a reinforcing bar for transmitting a bending force to the entire panel ( 460 may further be included.

That is, the curvature adjusting device 400 according to the second embodiment is connected to a plurality of fixing parts and a reinforcing bar 460 formed on the back cover of the panel and a fixing part 470 fixed to the upper part of the reinforcing bar. One end is configured to include a wire 450 as an attractive portion wound around the motor assembly 440.

The single motor assembly 440 included in the second embodiment has a configuration similar to that of the first embodiment, and is connected to the motor and the reduction gear and the reduction gear output which are connected to the motor shaft to provide a smaller output than the motor rotation. It may include a wheel or a pulley as a winding portion that serves to wind the wire 450.

Detailed configurations of the motor assembly and the reduction unit will be described in more detail with reference to FIGS. 5 and 6 below.

In addition, as in the first embodiment, in FIG. 4, the curvature adjusting device is disposed only in the center portion of the panel when viewed in the vertical direction, but is not limited thereto. For example, the upper and lower portions of the panel are illustrated. The curvature adjusting device may be arranged in each of the reinforcing bar, the fixing portion, the wire, the motor assembly, and the like.

The wire 450, which is an attractive part of the curvature adjusting device according to the second embodiment may also be made of metal, but is not limited thereto. The attractive part does not necessarily need to be a wire, and has a shape such as a bar, and has a specific area behind the panel. There will be no shape and material limitations as long as it can be connected between and the motor assembly to provide attraction or repulsion to the panel area in question.

As shown in FIG. 4C, the reinforcement bar 460 included in the curvature adjusting device according to the second embodiment has a plurality of segmented reinforcement bar 460 and 460 ′ shapes so that the panel may be smoothly curved. It may be formed as, and between the segment reinforcement bar 460 and the adjacent segment reinforcement bar 460 ′ may be provided with a cushioning member for smooth bending and shock absorption, the buffer member in the form of rubber, etc. The elastic damper 462 may be filled between the two segment reinforcing bars, and both ends may be in the form of elastic springs 464 fixed to both reinforcing bars, but the present invention is not limited thereto.

The buffer member is rotated by the motor by the motor control unit, so that when the wire 450 is pulled and the reinforcing bar is bent as a whole to form the curved surface of the panel, the curved surface can be more smoothly formed, and by the transfer of the tensile force, It is provided to absorb the shock transmitted to the panel structure.

In addition, the motor assembly 440 included in the curvature adjusting device according to the second embodiment may be fixed to the rear cover 330 as shown in FIG. 4B similarly to the first embodiment, but as shown in FIG. It may be fixed on the cover.

In the first embodiment as shown in FIG. 3, the motor assembly must be fixed to the rear cover because the wire must be pulled to the rear of the panel. However, in the second embodiment, one motor assembly pulls or pushes the attraction part connected to the reinforcing bar 460 to form a curved surface. Since it may be necessary, it is not necessarily fixed to the rear cover, it may be fixed on the back cover.

In the curvature adjusting device according to the second embodiment as described above, the motor control unit (not shown) calculates the amount of rotation of the motor according to a user command and generates a motor rotation control signal accordingly, and provides the result to the motor assembly. Then, the motor rotates by the motor rotation control signal and the wire is pulled accordingly, and the attraction force is transmitted through the reinforcing bar so that the panel is bent backwards as a whole. Of course, the curvature may be arbitrarily adjusted according to the user's preference by controlling the rotational amount of the motor, and may be returned to the initial state of the plane by releasing the tensile force by rotating the motor in reverse.

5 is a detailed functional block diagram of a motor assembly used in the first and second embodiments.

As shown in FIG. 5, the motor assembly 500 used in the curvature adjusting device for the variable curvature display device includes a motor 510 whose rotation amount or rotation speed is controlled by the motor controller 220 of FIG. It may be configured to include a wheel or a pulley as a reduction unit 520 for providing an output rotation speed less than the motor rotation speed and a winding portion 530 that is connected to the output shaft of the reduction gear to which the wire is wound.

In this case, the motor 510 may be a DC driving motor, but is not limited thereto. The motor 510 may be an AC motor, a brushed motor or a brushless motor, and may precisely control the rotation angle. It may be a step motor.

FIG. 6 illustrates specific embodiments of the reduction unit used in the motor assembly, and FIG. 6A illustrates a deceleration structure of a worm and a worm wheel, and FIG. 6B illustrates a deceleration structure of a simple gear type. .

In the deceleration structure of the worm (Worm) and worm wheel (Worm Wheel) method shown in FIG. The reduction ratio is determined according to the gear ratio between the worm shaft and the worm wheel. In addition, a wheel or pulley 530 as a winding portion of the wire 540 is coupled to the central axis of the worm wheel 522.

In the deceleration structure of the simple gear tooth method as illustrated in FIG. 6B, the small gear 523 is fixedly connected to the shaft of the motor 510, and a standby gear 524 meshing with the gear value of the small gear is provided. The reduction ratio of the reduction gear is determined by the ratio of the number of gears and the number of gears. In addition, a wheel or pulley 530 as a wire wound portion is coupled to the central axis of the standby gear 524.

Of course, the reduction unit 520 is not necessarily limited to the method shown in FIG. 6, and any type of reduction unit that reduces the output rotational speed of the motor by the reduction ratio may be used, for example, a planetary gear. A reducer including a structure) may be used.

FIG. 7 is a diagram showing a result of forming a curved surface on a panel when the curvature adjusting device according to the first embodiment is used.

As described above, in the curvature adjusting device and the variable curvature display device including the same, the first wire and the first motor assembly 340 disposed at the rear of the center of the panel and the left and right sides thereof are disposed. And second and third wires and second and third motor assemblies 340 ′ and 340 ″, the motors of each motor assembly being individually controlled by one motor control unit (T-Con) 220. have.

In this structure, when there is an input for adjusting the curvature of the panel according to a user command, the motor control unit 220 determines that the rotation amount of the motor included in the first motor assembly 340 is the second and third motor assemblies 340 '340 ”. ) Generates a motor rotation control signal for each motor so as to be greater than the rotation amount of the motor included in the) and transmits it to the corresponding motor.

Then, the motor of the first motor assembly in the center of the panel rotates more to provide a greater tensile force on the first wire, and as a result, the panel center area is pulled more rearward, so that the panel is curved as shown in FIG. It can be modified.

By using the above-described curvature adjusting device and the curvature-variable display device including the same, the curvature of the curved display device can be variably adjusted in real time according to the user's needs, thereby providing an optimal viewing environment according to the user's preference, number of users, viewing distance, etc. There is an effect that can provide.

The above description and the accompanying drawings are merely illustrative of the technical idea of the present invention, and a person of ordinary skill in the art to which the present invention pertains may combine the configuration without departing from the essential characteristics of the present invention. Various modifications and variations may be made, including separation, substitution, and alteration. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: surface display device 200: curvature adjustment device
210: panel assembly 310: panel
320: back cover 250: manpower
240, 340, 440, 500: motor assembly
341 ~ 341 ”, 510: Motor 342 ~ 342”, 520: Reducer
343 ~ 343 ”, 530: winding part (wheel or pulley)
350 ~ 350 ”, 450, 540: Wire 360, 470: Fixed part
460: reinforcement bar

Claims (10)

panel;
A manpower part fixed to a specific area behind the panel to apply attraction to the corresponding area of the panel, a motor assembly to apply and release attraction by pulling the attraction part, and the motor assembly to change the curvature of the panel. Curvature adjusting device including a motor control unit for controlling the amount of rotation of the motor included in; And,
A rear cover provided behind the curvature adjusting device;
Including;
The motor assembly includes a motor, a deceleration unit of a worm-worm wheel composition or gear tooth deceleration structure including a motor and a deceleration output shaft connected to the motor shaft of the motor to provide an output of a rotation speed smaller than the motor rotation speed, and the deceleration output. And a winding portion that is connected to a shaft and is a wheel or pulley to which the attraction portion is wound. delete The method of claim 1,
And a back cover attached to the rear surface of the panel, and further comprising a fixing part for fixing the attraction portion of the curvature adjusting device to the back cover. The method of claim 1,
Two or more motor assemblies are provided at the rear of the panel, and the curvature of the panel is changed by independently adjusting the rotation amount of the motor included in each motor assembly. The method of claim 4, wherein
The motor control unit controls to reduce the curvature of the panel by making the motor rotation amount of the motor assembly disposed behind the center portion of the panel larger than the rotation amount of the motor assembly disposed behind the panel edge portion. Surface display device characterized in that. The method of claim 1,
The curvature adjusting device is provided at the rear of the panel, the curvature adjusting device further includes a reinforcing bar for transmitting the bending force by the motor to the entire panel, and the attraction portion is an upper portion of the reinforcing bar The curved display device is connected to the fixed part disposed in the wound around the wound portion. The method of claim 6,
The reinforcement bar includes a plurality of segment reinforcement bars, and between the segment reinforcement bar and the adjacent segment reinforcement bar, a cushioning member is provided for smooth bending and shock absorption. An attractive part fixed to a specific area behind the display panel to apply an attractive force to the corresponding area of the panel;
A motor assembly for applying and releasing attraction by pulling the attraction;
A motor controller which controls the amount of rotation of the motor included in the motor assembly to change the curvature of the panel;
Including;
The motor assembly includes a motor and a deceleration portion of a worm-worm wheel structure or a gear tooth deceleration structure including a motor and a deceleration output shaft connected to the motor shaft of the motor to provide an output of a rotation speed smaller than the motor rotation speed. Curvature adjusting device for a curved display device including a winding that is connected to the shaft and the pulley is the wheel or the pulley. delete The method of claim 8,
Curvature adjusting apparatus for a curved display device, characterized in that the attraction portion is a wire.

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