KR20150095055A - Image display device - Google Patents

Abstract

The present invention discloses an image display device including: a display panel outputting visual information; a case accommodating the display panel; a moving assembly having a moving bar formed to be able to move in a straight line between a first state where the moving bar is installed on the case and covered by the case and a second state where a part of the moving bar covers the display panel to be exposed to the outside; a calibration sensor mounted on the moving bar to obtain calibration information for a point within the area where the moving bar is able to move in a straight line in the second state; and a control unit controlling the display panel by using the obtained calibration information.

Description

{IMAGE DISPLAY DEVICE}

The present invention relates to an image display device having a calibration sensor.

The video display device includes both a device for receiving and outputting a broadcast, a device for recording and reproducing video, and a device for recording and reproducing audio. Such image display devices include, for example, a television, a monitor, a projector, a tablet, and the like.

As the functions of the video display device are diversified, the video display device is implemented as a multimedia player having multiple functions such as photographing and video shooting, game, broadcast reception in addition to the output of the broadcast and the playback of the video .

Various new attempts have been made in terms of hardware or software to support and enhance the functions of such image display devices.

The hue, saturation, and saturation of the display panel provided in the image display device can be finely changed over time. Also, even with the same display panel, slight differences in hardware or software can cause subtle differences in color. Therefore, adjustment of these elements is required so that the display panel can realize an optimal color.

The adjustment is made by resetting the control signal of the display panel based on the value detected by a photosensor, called a calibration sensor. The principles of calibration are well known in the art.

An object of the present invention is to provide an image display device capable of performing calibration for one area of a display panel using a calibration sensor incorporated in an image display device.

According to another aspect of the present invention, there is provided an image display apparatus including a display panel for outputting time information, a case for accommodating the display panel, And a second state in which at least a part of the moving bar is disposed so as to cover the display panel and is exposed to the outside, and a moving bar which is mounted on the moving bar, And a control unit for controlling the display panel using the obtained calibration information. The calibration unit may be configured to receive the calibration information from the calibration unit.

According to an embodiment of the present invention, a receiving portion for receiving the moving bar in the first state is provided on one side of the display panel.

The receiving portion may be disposed at one lower side of the display panel, and the moving bar may be linearly movable from one lower side of the display panel toward the other lower side facing the other side.

According to another embodiment of the present invention, the calibration sensor is mounted on an inner surface of the moving bar and is disposed to face the display panel in the second state, and when the calibration sensor acquires the calibration information, A shielding wall protruding toward the display panel is formed on the moving bar so as to be shielded.

The shielding wall may be formed to extend around the moving bar so as to surround the calibration sensor.

According to another example related to the present invention, the calibration sensor is configured to be movable to contact the arbitrary point when the moving bar is disposed to cover the arbitrary point.

According to another embodiment of the present invention, the moving assembly includes: a holder mounted on the case and having a receiving portion; and a moving member provided in the receiving portion, And a piezo linear motor part connected to the moving bar.

The piezoelectric linear motor unit includes first and second piezoelectric linear motors disposed alternately in the receiving portion and formed so that the rod linearly moves by the vibration of the piezoelectric ceramics, and first and second piezoelectric linear motors disposed between the first and second piezoelectric linear motors And a moving member which is formed to be movable along the linear movement direction by the linear movement and on which the moving bar is mounted.

Wherein the moving bar includes a first extension mounted on the moving member and configured to slide on a bottom surface of the display panel between the first state and the second state, And a second extension portion to which the calibration sensor is mounted on the inner surface facing the display panel.

In the second state, the first extension may be obscured by the case, and at least a part of the second extension may be exposed to the outside.

According to another embodiment of the present invention, the moving assembly includes a holder mounted on the case and having a first accommodating portion for accommodating at least a part of the moving bar, and a rack gear formed at one side of the moving bar And a driving unit for rotating the pinion gear such that the moving bar linearly moves with the pinion gear engaged therewith.

The moving assembly may further include a guide wire fixed to both sides of the first accommodating portion and installed to penetrate the moving bar to guide linear movement of the moving bar.

The holder may further include a second accommodating portion provided with a space for mounting the drive unit and communicating with the first accommodating portion so that the pinion gear is engaged with the rack gear.

Wherein the moving bar includes a first extending portion extending along the linear movement direction and having the rack gear formed at a lower end thereof, and a second extending portion extending vertically from the first extending portion, And a second extension portion to which the first extension portion is mounted.

In the second state, the first extension may be obscured by the case, and at least a part of the second extension may be exposed to the outside.

According to the present invention, the calibration sensor is configured to acquire calibration information for an arbitrary point within a region where the moving bar is linearly moved while being superimposed on the display panel, so that calibration for one area of the display panel is performed .

Further, since the shielding wall protruding toward the display panel is formed on the moving bar, the ambient light is shielded when the calibration sensor acquires the calibration information, so that the reliability of the calibration can be improved.

In addition, the image display device can realize a stable linear reciprocation mechanism of the moving bar through the moving linear assembly including the piezo linear motor or the rack and pinion gear.

1 is a block diagram for explaining a calibration process of a video display device according to the present invention;
2 is a conceptual diagram showing a video display device according to an embodiment of the present invention;
FIGS. 3A and 3B are conceptual views showing a state in which the moving bar of the image display device shown in FIG. 2 is received in the receiving portion and a state in which the moving bar is drawn out from the receiving portion;
4 is a conceptual view of the moving assembly shown in FIG.
Figure 5 is an exploded view of the moving assembly shown in Figure 4;
6 is a conceptual view showing the inside of the moving bar shown in FIG.
7A and 7B are conceptual diagrams respectively showing a state in which a moving bar of a video display device according to another embodiment of the present invention is accommodated in a receiving portion and a moving bar is drawn out from a receiving portion;
8 is a conceptual view of the moving assembly shown in Fig. 7A; Fig.
Figure 9 is an exploded view of the moving assembly shown in Figure 8;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or similar elements are denoted by the same or similar reference numerals, and a duplicate description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The video display device according to the present invention includes all devices including a display panel such as a device for receiving and outputting broadcasts, a device for playing back images, and the like. Hereinafter, a television will be described as an example of a video display device related to the present invention.

FIG. 1 is a block diagram illustrating a calibration process of the image display device 100 according to the present invention.

1, the image display device 100 includes a display panel 110 for outputting time information, a calibration sensor 140 for acquiring calibration information for the display panel 110, and an image processor 151 A control unit 150 and a memory unit 160 for storing calibration information. Other components of the image display device 100 are not directly related to the following description, and thus will not be described here.

The calibration sensor 140 acquires calibration information (e.g., color, brightness, saturation, etc.) for the display panel 110 when a control command related to performing the calibration occurs. At this time, the calibration sensor 140 may be disposed on an arbitrary area of the display panel 110 by a mechanism to be described later to obtain calibration information.

In the memory unit 160, calibration information optimized for the display panel 110 is stored. The optimized calibration information may include calibration information optimized for each screen mode (for example, a moving image playback mode, a text output mode, a search mode, and the like). Such optimized calibration information may include color temperature information and gamma value information optimized for each screen mode.

The controller 150 controls the overall components including the calibration sensor 140. The image processor 151 included in the control unit 150 generates a control signal for controlling the display panel 110 using the calibration information.

Hereinafter, the image display device 100 capable of performing calibration for one area of the display panel 110 using the calibration sensor 140 incorporated in the image display device 100 will be described in more detail.

FIG. 2 is a conceptual view showing an image display device 100 according to an embodiment of the present invention. FIGS. 3A and 3B are views showing a state where the moving bar 131 of the image display device 100 shown in FIG. And a state in which the moving bar 131 is drawn out from the receiving portion 120a.

2, 3A and 3B, the image display device 100 includes a display panel 110, a case 120, a moving assembly 130, a calibration sensor 140, and a control unit 150.

The display panel 110 may convert a video signal, a data signal, an OSD signal, etc. processed by the controller 150 into an RGB signal to generate a driving signal. Thus, the display panel 110 outputs time information.

The display panel 110 may include at least one of a plasma display panel (PDP), a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light emitting diode A light emitting diode (OLED), a flexible display, a three-dimensional display (3D display), and an electronic ink display (e-ink display).

In addition, the display panel 110 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. Such a touch screen may also function as a user input unit for providing an input interface between the image display apparatus 100 and a user.

The case 120 receives the display panel 110 and forms an appearance of the image display device 100. The case 120 may also be referred to as another term such as a frame, a housing, a cover, and the like. The case 120 may be disposed so as to cover the edge portion of the display panel 110 as shown in FIG.

In the case 120, a moving assembly 130 having a moving bar 131 is installed. FIG. 2 illustrates that the moving assembly 130 is disposed at the lower end of the case 120. The moving assembly 130 is configured to implement a linear reciprocating mechanism of the moving bar 131. Unlike the present embodiment, the moving assembly 130 may be provided at one end of the case 120.

The moving bar 131 has a rod shape elongated in at least one direction. The moving bar 131 is linearly movable between a first state in which the moving bar 131 is covered by the case 120 and a second state in which at least a part of the moving bar 131 is disposed to cover the display panel 110 and is exposed to the outside. 3A and 3B, the moving bar 131 is shown to be linearly movable from one lower end of the display panel 110 to the other lower end facing the one side.

The first state is a state in which no calibration is performed. In the first state, when the control unit 150 generates a control signal related to the execution of the calibration, the moving bar 131 is switched to the second state, and calibration is performed. Thereafter, when the calibration is completed, the moving bar 131 is returned to the first state.

A receiving portion 120a for receiving the moving bar 131 in the first state may be provided at a lower end of the display panel 110 at one side. The receiving portion 120a may be a space provided between the display panel 110 and the case 120 or may be a space formed in the case 120 itself. In this way, in the first state, the moving bar 131 is accommodated in the receiving portion 120a and does not cover the time information output from the display panel 110. [

The case 120 may be disposed to cover the moving bar 131 so that the moving bar 131 is not visible on the front surface of the display panel 110 when the moving bar 131 is received in the receiving portion 120a. That is, the moving bar 131 is accommodated in the accommodating portion 120a and is concealed by the case 120, except when the calibration is performed.

3A and 3B, the first state in which the moving bar 131 is received and hidden at one side of the lower side of the case 120 and the moving bar 131 are linearly moved in a state of overlapping with the display panel 110, And the exposed second state, respectively.

The calibration sensor 140 is mounted on the moving bar 131 and is configured to obtain calibration information for an arbitrary point in the region where the moving bar 131 can move linearly in the second state. 3A and 3B, the calibration sensor 140 is linearly moved at a lower end of one side of the case 120 where the calibration sensor 140 is covered, and the display panel 110 covered with the moving bar 131 And acquiring calibration information for an arbitrary point.

The control unit 150 controls the display panel 110 using the obtained calibration information. For example, the image processor 151 included in the controller 150 compares the optimized calibration information stored in the memory unit 160 with the calibration information acquired by the calibration sensor 140, and outputs the calibration information to the display panel 110 The input RGB signal can be converted.

Hereinafter, the detailed structure for realizing the movement of the moving bar 131 will be described in more detail.

FIG. 4 is a conceptual view of the moving assembly 130 shown in FIG. 3A, FIG. 5 is an exploded view of the moving assembly 130 shown in FIG. 4, FIG.

4 to 6, the moving assembly 130 further includes a holder 132 and a piezo linear motor unit 133 in addition to the moving bar 131 described above.

The holder 132 is mounted on the case 120 and has a receiving portion 132a. Alternatively, the holder 132 may be formed integrally with the case 120 without being separately configured. That is, the case 120 itself may be provided with a receiving portion 132a in which the piezoelectric linear motor portion 133 can be received.

The piezo linear motor unit 133 is installed in the receiving part 132a and is connected to the moving bar 131 to generate a linear displacement of the moving bar 131 using the piezoelectric effect. The piezoelectric linear motor unit 133 includes a first piezoelectric linear motor 133a, a second piezoelectric linear motor 133b, and a moving member 133c.

The first and second piezoelectric linear motors 133a and 133b are arranged in a staggered manner in the accommodating portion 132a and each includes a piezoelectric ceramic 133 'which generates vibration due to contraction and expansion when current is applied, In this structure, when a current in the opposite direction is applied to the first and second piezo linear motors 133a and 133b, a driving force in one direction can be generated. The first and second piezo linear actuators 133a and 133b are lightweight and compact and have little noise.

A moving bar 131 is mounted on the moving member 133c and is disposed between the first and second piezo linear motors 133a and 133b so as to be linearly movable by the linear motion. As a result, the moving bar 131 mounted on the moving member 133c is formed to be movable along the linear movement direction described above. That is, the moving bar 131 can be linearly reciprocated between the first state and the second state by the above-described mechanism.

The moving assembly 130 may be provided with a guide member 133d for guiding the movement of the moving member 133c. The guide member 133d may be configured to surround each of the first and second piezo linear motors 133a and 133b and may be a leaf spring.

The moving bar 131 may include a first extending portion 131a and a second extending portion 131b.

The first extension portion 131a is mounted on the moving member 133c and is arranged to slide and be disposed to cover the bottom surface of the display panel 110 between the first state and the second state.

The second extension portion 131b extends vertically from the first extension portion 131a and overlaps the display panel 110 in the second state. Referring to FIG. 6, a calibration sensor 140 is mounted on the inner surface of the second extension part 131b, and is disposed to face the display panel 110 in the second state. In this figure, a mounting groove 131b 'is formed on the inner side surface of the second extension portion 131b, and a circuit (not shown) electrically connected to the control unit 150 and mounted on the calibration sensor 140 is mounted on the mounting groove 131b' And the substrate 160 is installed.

As shown in FIGS. 3A and 3B, in the second state, the first extension portion 131a is covered by the case 120, and at least a part of the second extension portion 131b is exposed to the outside have.

Meanwhile, the calibration sensor 140 is accommodated in the mounting groove 131b 'and disposed to face the display panel 110. If ambient light enters during calibration, it is difficult to obtain accurate calibration information. A shielding wall 131b "protruding toward the display panel 110 may be formed in the ventilation ledge 131b such that the ambient light is shielded when the calibration sensor 140 acquires the calibration information. May extend along the circumference of the second extension portion 131b so as to surround the calibration sensor 140.

In order to improve the shielding property, the shielding wall 131b "can remain in contact with the display panel 110 when the moving bar 131 is moved. The shielding wall 131b " A protective sheet of a fibrous material (e.g., a nonwoven fabric) may be attached to the shielding wall 131b "so that scratches of the shielding wall 131b "

On the other hand, if the moving bar 131 is disposed so as to cover an arbitrary point, the calibration sensor 140 can be configured to be movable toward an arbitrary area. In addition, the movement may cause the calibration sensor 140 to contact the display panel 110. In order to achieve this, a driving unit for moving the calibration sensor 140 toward the display panel 110 may be installed in the moving bar 131. In this case, there is an advantage that more accurate calibration is possible.

Hereinafter, a detailed structure for implementing movement of the image display device 200 and the moving bar 231 according to another embodiment of the present invention will be described.

7A and 7B illustrate a state where the moving bar 231 of the image display device 200 is received in the receiving portion 220a and the moving bar 231 is drawn out from the receiving portion 220a FIG. 8 is a conceptual view of the moving assembly 230 shown in FIG. 7A, and FIG. 9 is an exploded view of the moving assembly 230 shown in FIG.

Hereinafter, the detailed structure for realizing the movement of the moving bar 231 with the image display device 200 will be described. The structure of the video display device 100 described above may be applied to the video display device 200 of the present embodiment as well, so long as it does not logically contradict with the present embodiment, and a duplicate description thereof will be omitted.

7A, 7B, 8 and 9, the moving assembly 230 includes a moving bar 231, a holder 232, and a drive unit 233. [

The moving bar 231 has a rod shape elongated in at least one direction. The moving bar 231 is linearly movable between a first state in which the moving bar 231 is covered by the case 220 and a second state in which at least a part of the moving bar 231 is disposed to cover the display panel 210 and is exposed to the outside. 7A and 7B show that the moving bar 231 is linearly movable from one lower end of the display panel 210 toward the other lower end facing the other end.

At least one side of the moving bar 231 is provided with a rack gear 231c. In this embodiment, a rack gear 231c is formed at the lower end of the moving bar 231 so as to extend.

The holder 232 is mounted to the case 220 and has a first receiving portion 232a for receiving at least a part of the moving bar 231. [ Alternatively, the holder 232 is not formed as a separate component, but may be formed integrally with the case 220. That is, the case 220 may be provided with the first accommodating portion 232a.

The drive unit 233 has a motor 233a for generating a driving force and a pinion gear 233b rotated by the motor 233a and meshing with the rack gear 231c. According to the above structure, as the pinion gear 233b is rotated, the moving bar 231 is linearly moved. That is, the rotational motion of the motor 233a is changed to the linear motion of the moving bar 231.

The moving assembly 230 may further include a structure for guiding linear movement of the moving bar 231. For example, the moving bar 231 received in the first receiving portion 232a may be provided with a guide hole 231d along the linear moving direction, and guide holes 231d may be formed on both sides of the first receiving portion 232a. And the guide wire 234 passing through the moving bar 231 can be fixed. With this guide structure, the moving bar 231 can be stably linearly moved within the first accommodating portion 232a.

Meanwhile, the holder 232 may be formed with a second receiving portion 232b communicating with the first receiving portion 232a. A drive unit 233 is mounted to the second accommodating portion 232b and the pinion gear 233b is engaged with the rack gear 231c through a portion communicating with the first accommodating portion 232a. According to this structure, the moving bar 231, the holder 232, and the drive unit 233 can be configured as one assembly.

The moving bar 231 may include a first extending portion 231a and a second extending portion 231b.

The first extended portion 231a is accommodated in the first accommodating portion 232a and extends along the linear motion direction, and a rack gear 231c is formed at the lower end. The first extension 231a may be covered by the case 220 in the first and second states. The first extended portion 231a may be formed with the guide hole 231d along the extending direction of the first extended portion 231a.

The second extension portion 231b extends vertically from the first extension portion 231a and overlaps the display panel 210 in the second state. A calibration sensor 240 is mounted on the inner surface of the second extension portion 231b and is arranged to face the display panel 210 in the second state. The mounting groove 231b 'may be formed on the inner surface of the second extension portion 231b and the mounting recess 231b' may be electrically connected to the controller 250 and may be connected to the calibration sensor 240 May be mounted on the circuit board 260.

7A and 7B, in the second state, the first extension portion 231a is covered by the case 220, and at least a part of the second extension portion 231b may be exposed to the outside.

As described above, the image display devices 100 and 200 are capable of moving a stable linear reciprocating mechanism of the moving bars 131 and 231 through the moving assemblies 130 and 230 having the piezo linear motor or the rack and pinion gear Can be implemented.

The structures for implementing the movement of the moving bars 131 and 231 described above are only examples, and the present invention is not limited to the structures. The structure for implementing the movement may be modified to any other structure.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (15)

A display panel for outputting visual information;
A case accommodating the display panel;
And a moving bar installed in the case, the moving bar being linearly movable between a first state in which the first state is obscured by the case and a second state in which at least a portion covers the display panel and is exposed to the outside;
A calibration sensor mounted on the moving bar, the calibration sensor acquiring calibration information for an arbitrary point in the region in which the moving bar can move linearly in the second state; And
And a controller for controlling the display panel using the obtained calibration information. The method according to claim 1,
And a storage unit for storing the moving bar in the first state is provided on one side of the display panel. 3. The method of claim 2,
Wherein the receiving portion is disposed at a lower end of one side of the display panel,
Wherein the moving bar is formed so as to be linearly movable from a lower end of one side of the display panel toward a lower side of the other side facing the one side. The method according to claim 1,
Wherein the calibration sensor is mounted on an inner surface of the moving bar and is disposed to face the display panel in the second state,
Wherein the moving bar is formed with a shielding wall protruding toward the display panel so that ambient light is shielded when the calibration sensor acquires the calibration information. 5. The method of claim 4,
Wherein the shielding wall is formed to extend along the circumference of the moving bar so as to surround the calibration sensor. The method according to claim 1,
Wherein the calibration sensor is configured to be movable so as to contact the arbitrary point when the moving bar is disposed to cover the arbitrary point. The method according to claim 1,
The moving assembly includes:
A holder mounted on the case and having a receiving portion; And
Further comprising a piezo linear motor part installed in the receiving part and connected to the moving bar to generate a linear displacement of the moving bar using a piezoelectric effect. 8. The method of claim 7,
The piezoelectric linear motor unit includes:
First and second piezo linear motors arranged alternately in the receiving portion and formed so that the rod linearly moves by the vibration of the piezoelectric ceramics; And
And a moving member that is disposed between the first and second piezo linear motors and is movable along the linear movement direction by the linear motion and on which the moving bar is mounted. 9. The method of claim 8,
The moving bar includes:
A first extension mounted on the moving member and configured to slide the bottom surface of the display panel between the first state and the second state; And
And a second extension part extending vertically from the first extension part and having the calibration sensor mounted on the inner surface facing the display panel. 10. The method of claim 9,
In the second state,
Wherein the first extension is obscured by the case,
And at least a part of the second extension part is exposed to the outside. The method according to claim 1,
The moving assembly includes:
A holder mounted on the case and having a first accommodating portion in which at least a part of the moving bar is accommodated; And
Further comprising a drive unit that includes a pinion gear engaged with a rack gear formed on one side of the moving bar and rotates the pinion gear so that the moving bar linearly moves. 12. The method of claim 11,
The moving assembly includes:
Further comprising a guide wire fixed to both sides of the first accommodating portion and provided to penetrate the moving bar and guiding linear movement of the moving bar. 12. The method of claim 11,
Wherein the holder comprises:
Further comprising a second accommodating portion provided with a space for mounting the drive unit and communicating with the first accommodating portion so that the pinion gear can be engaged with the rack gear. 12. The method of claim 11,
Wherein the moving bar is formed to extend along the linear movement direction and has a rack gear at a lower end thereof; And
And a second extension part extending vertically from the first extension part and having the calibration sensor mounted on the inner surface facing the display panel. 15. The method of claim 14,
In the second state,
Wherein the first extension is obscured by the case,
And at least a part of the second extension part is exposed to the outside.

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