KR20240060763A - Display apparatus and computing apparatus - Google Patents

Abstract

The present application provides a display device capable of outputting high-quality sound and a computing device using the same. The display device according to the present application includes a display module having a display panel, a vibration plate coupled to the display module, and a vibration disposed on the vibration plate. It includes a module, and the display panel can vibrate according to the vibration of the vibration plate and output sound forward.

Description

Display device and computing device using the same {DISPLAY APPARATUS AND COMPUTING APPARATUS}

This application relates to a display device and a computing device using the same.

Typically, display devices are electronic products or home appliances such as televisions, monitors, laptop computers, smart phones, tablet computers, electronic organizers, electronic pads, wearable devices, watch phones, portable information devices, navigation, or vehicle control display devices. It is mounted on and used as a screen to display video.

A typical display device includes a display panel that displays an image, and a sound device that outputs sound related to the image.

However, in display devices such as televisions and monitors, the sound output from the sound device travels behind or below the display panel, so the sound quality deteriorates due to interference between sounds reflected from walls or the ground, thereby reducing the viewer's sense of immersion. There is a problem with doing it.

In addition, the sound device (or speaker) of general computing devices such as laptop computers or tablet computers has the disadvantage that it is difficult to implement high-quality sound, and in particular, low-range bass sound is not rich, and due to the trend of miniaturization of system bodies due to the trend toward lighter and smaller systems, Therefore, there is a disadvantage in that it is difficult to implement low sounds below 1kHz and high sounds above 4kHz compared to existing ones. Moreover, since the sound device of a typical computing device is placed on the lower side of the keyboard, the bottom of the body, and the left and right sides, etc., and is separated from the screen, it reduces the viewer's sense of immersion due to a sense of heterogeneity (or disharmony) due to the difference in distance between the image and the sound. There is a problem. In other words, since the sound output direction of the speaker of a typical computing device is not toward the viewer's ears, there is a problem in that the sound in the mid- to high-pitched range of 2Khz or higher, which has a strong linearity, cannot be transmitted directly to the viewer and is lost or distorted.

The technical task of this application is to provide a display device capable of high-quality sound output and a computing device using the same.

The display device according to the present application includes a display module having a display panel, a vibration plate coupled to the display module, and a vibration module disposed on the vibration plate, and the display panel vibrates according to the vibration of the vibration plate and outputs sound forward. can do.

The computing device according to the present application is installed between the system body and the display device and includes a hinge portion that rotatably supports the display device, and the display device includes a display module having a display panel, a vibration plate coupled to the display module, and a vibration plate. It includes an arranged vibration module, and the display panel can vibrate according to the vibration of the vibration plate and output sound forward.

The display device according to the present application and the computing device using the same can output a wide sound range and high-quality sound by outputting sound in front of the display panel, can have a sound field that fills the entire screen, and can achieve harmony between image and sound ( or coincidence) can improve the viewer's sense of immersion.

In addition to the effects of the present application mentioned above, other features and advantages of the present application are described below, or can be clearly understood by those skilled in the art from such description and description.

1 is a cross-sectional view schematically showing a display device according to an example of the present application.
Figure 2 is a cross-sectional view schematically showing a display device according to another example of the present application.
3 is a diagram for explaining a computing device according to an example of the present application.
FIG. 4 is a cross-sectional view of the display device taken along the line II' shown in FIG. 3.
FIG. 5 is a cross-sectional view of the display device taken along the line II-II' shown in FIG. 3.
FIG. 6 is a rear view showing the rear of the display module shown in FIG. 4.
Figure 7 is a diagram for explaining the circuit connection structure of the system main body, the printed circuit board, and the vibration module in an example of the present application.
Figure 8 is a diagram for explaining the circuit connection structure of the system main body, the printed circuit board, and the vibration module in another example of the present application.
FIG. 9 is a graph showing a comparison of sound output characteristics between a computing device of a comparative example and a computing device according to an example of the present application.
Figures 10, 11, 12, and 13 are each different cross-sectional views taken along the line II' shown in Figure 3.
FIG. 14 is a cross-sectional view for explaining the vibration element shown in FIG. 13.
Figures 15, 16, and 17 are each different cross-sectional views taken along the line II' shown in Figure 3.
FIG. 18 is a diagram for explaining a computing device according to another example of the present application.
FIG. 19 is a plan view showing the display module shown in FIG. 18.
FIG. 20 is a cross-sectional view taken along line III-III' shown in FIG. 19.
Figure 21 is a perspective view showing a computing device according to another example of the present application.
Figure 22 is a perspective view showing a display device according to an example of the present application.
Figure 23 is a perspective view showing a display device according to another example of the present application.

The advantages and features of the present application and methods for achieving them will become clear by referring to examples described in detail below along with the accompanying drawings. However, the present application is not limited to the examples disclosed below and will be implemented in various different forms, and only the examples of the present application ensure that the disclosure of the present application is complete, and are commonly used in the technical field to which the invention of the present application pertains. It is provided to fully inform those with knowledge of the scope of the invention, and the invention of this application is only defined by the scope of the claims.

The shape, size, ratio, angle, number, etc. disclosed in the drawings for explaining an example of the present application are illustrative, and the present application is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, when describing examples of the present application, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the present application, the detailed descriptions will be omitted.

When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. In cases where a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

In the case of a description of a temporal relationship, for example, if a temporal relationship is described as 'after', 'successfully after', 'after', 'before', etc., 'immediately' or 'directly' Unless used, non-consecutive cases may also be included.

Although first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, the first component mentioned below may also be the second component within the technical spirit of the present application.

The term “at least one” should be understood to include all possible combinations from one or more related items. For example, “at least one of the first, second, and third items” means each of the first, second, or third items, as well as two of the first, second, and third items. It can mean a combination of all items that can be presented from more than one.

Each feature of the various examples of the present application can be partially or entirely combined or combined with each other, and various technological interconnections and operations are possible, and each example may be implemented independently of each other or together in a related relationship. .

Hereinafter, a preferred example of a display device and a computing device using the same according to the present application will be described in detail with reference to the attached drawings. In adding reference numerals to components in each drawing, identical components may have the same reference numerals as much as possible even if they are shown in different drawings.

1 is a cross-sectional view schematically showing a display device according to an example of the present application.

Referring to FIG. 1, the display device according to this example includes a display module 100, a vibration plate 200, a vibration module 300, and a system rear cover 910.

The display module 100 includes a display panel 110 that displays an image.

The display panel 110 may be any one of a flat display panel such as a liquid crystal display panel, a light-emitting display panel, an electrophoretic display panel, a micro light-emitting diode display panel, a plasma display panel, an electrowetting display panel, or a quantum dot light-emitting display panel. there is.

The vibration plate 200 is coupled to the display module 100. The vibration plate 200 according to one example may be arranged to face the rear of the display module 100.

The vibration plate 200 according to the present application may be made of any one of magnesium (Mg) alloy material, magnesium lithium (Li) alloy material, and aluminum (Al) alloy material. For example, the magnesium alloy material may contain at least one of aluminum, zinc (Zn), and manganese (Mn). Magnesium alloy material is the lightest material among the metal materials of mechanical structures, and has relatively high specific rigidity (strength/specific gravity), relatively high vibration damping ability (ability to absorb vibration and gradually reduce vibration), and has excellent properties over time and temperature. It has excellent dimensional stability against changes in size.

The vibration plate 200 according to the present application is made of any one of magnesium (Mg) alloy material, magnesium lithium (Li) alloy material, and aluminum (Al) alloy material, thereby providing fast negative reactivity (response speed) due to low density. ), it is possible to realize fine sound, and due to high specific rigidity, it is possible to realize sound in the entire range of sounds from low to high range through fast sound speed, and due to high vibration damping ability, internal loss is large, so there is no unnecessary vibration, so residual noise is possible. The original sound can be reproduced by suppressing hyper-reflected or resonant sounds, and because it has high elasticity, high-resolution tones of 40 kHz or higher can be realized.

The vibration plate 200 according to one example is disposed on the rear of the display module 100 via the plate fixing member 250, thereby covering the rear of the display module 100 and being spaced apart from the rear of the display module 100. . For example, the vibration plate 200 may have a thickness of 0.1 mm to 1.0 mm in order to improve high-pitched sounds. Here, if the thickness of the vibration plate 200 is less than 0.1 mm, it is difficult to maintain flatness and there are problems such as tearing and damage during vibration, and if the thickness of the vibration plate 200 exceeds 1.0 mm, the high-pitched sound range is difficult to maintain. It is suitable for implementing low-pitched sounds rather than low-pitched sounds.

The plate fixing member 250 is interposed between the front edge of the vibration plate 200 and the rear of the display module 100, thereby fixing the vibration plate 200 to the rear of the display module 100, and An air gap (AG) is provided between the rear of 100 and the vibration plate 200. The air gap (AG) may be defined as a vibration space for vibration of the vibration plate 200 and vibration of the display module 100 according to the vibration of the vibration plate 200.

The plate fixing member 250 according to one example may be a double-sided adhesive tape or adhesive resin. The double-sided adhesive tape may include a pad or foam pad with a certain height (or thickness). The adhesive resin may include an acrylic-based material or a urethane-based material, and is preferably used relatively more than an acrylic-based material in order to minimize the vibration of the vibration plate 200 being directly transmitted to the display module 100. It is preferably made of a urethane-based material with ductility characteristics.

The vibration module 300 is disposed on the vibration plate 200 and vibrates according to an input acoustic driving signal to vibrate the vibration plate 200. The vibration module 300 according to the present application includes a first vibration element 310 and a second vibration element 330.

The first vibration element 310 is attached to one side of the vibration plate 200 via an element adhesive member 350. The second vibration element 330 is attached to the other side of the vibration plate 200 via the element adhesive member 350. The device adhesive member 350 may be a double-sided tape or a natural curing adhesive. Here, the device adhesive member 350 may be made of a thermosetting adhesive or a photocurable adhesive. In this case, the characteristics of the vibration device 310 may be deteriorated due to the heat from the curing process of the device adhesive member 350.

According to one example, each of the first vibration element 310 and the second vibration element 330 is positioned on the front of the vibration plate 200 to face the rear of the display module 100 with the air gap AG in between. can be attached to At this time, in order to prevent physical contact between the vibration elements 310 and 330, which vibrate according to the input acoustic driving signal, and the rear of the display module 100, the vibration elements 310 and 330 are connected to the display module 100. They are separated from the rear by a preset distance, and the distance between the vibration elements 310 and 330 and the display module 100 can be set by the height (or thickness) of the plate fixing member 250. Accordingly, the plate fixing member 250 has a height relatively higher than the distance between the front of the vibration plate 200 and the front of the vibration elements 310 and 330, based on the thickness direction (Z) of the display device. (or thickness) to prevent damage or destruction of the vibration elements 310 and 330 due to direct physical contact between the vibration elements 310 and 330 and the display module 100.

Optionally, each of the first vibration element 310 and the second vibration element 330 according to an example may be attached to the rear of the vibration plate 200 so as to face the system rear cover 910.

Each of the first vibration element 310 and the second vibration element 330 according to an example includes a piezoelectric material layer having a piezoelectric effect, a first electrode disposed on the front surface of the piezoelectric material layer, and a piezoelectric material layer. It may include a second electrode disposed on the rear side.

The piezoelectric material layer includes a piezoelectric material that generates vibration by an electric field. Here, the piezoelectric material generates a potential difference due to dielectric polarization due to a change in the relative position of positive (+) ions and negative (-) ions while pressure or torsion phenomenon acts on the crystal structure due to external force, and conversely, according to the applied voltage. It has the characteristic of causing vibration due to an electric field. The piezoelectric material of the vibration element 310 according to an example may include any one of ceramic materials, polymer materials, and semiconductor materials, or a mixture of two or more materials, and is preferably a ceramic piezoelectric material with wide frequency response characteristics. can be achieved. Here, the ceramic piezoelectric material may include lead zirconate titanate (PZT) or barium carbonate (BaTiO3), the polymer piezoelectric material may include polyvinylidene difluoride (PVDF), etc., and the semiconductor piezoelectric material may include zinc oxide (ZnO) and the like. It may contain cadmium sulfide (CdS), etc.

The first electrode and the second electrode are provided to overlap each other with a piezoelectric material layer interposed therebetween. The first electrode and the second electrode are preferably made of an opaque metal material with relatively low resistance and excellent heat dissipation properties, but are not limited thereto, and may be made of a transparent conductive material or a conductive polymer material depending on the case.

The system rear cover 910 accommodates the vibration plate 200 and the display module 100 to which the vibration module 300 is coupled.

The system rear cover 910 according to one example may include a bottom structure 911 and a side wall structure 913. The floor structure 911 is the outermost rear structure located at the rear of the display device, supports the rear edge of the display module 100, and covers the rear of the vibration plate 200. The side wall structure 913 is an outermost side structure located on the side of the display device, and is provided at the edge of the floor structure 911 to cover the side surfaces of the display module 100 and the side surfaces of the vibration plate 200.

The display device according to this example may further include a sound absorption member 500. The sound-absorbing member 500 is disposed on the rear side of the vibration plate 200. The sound absorption member 500 according to one example may be installed on the bottom structure 911 of the system rear cover 910 to face the rear of the vibration plate 200. The sound-absorbing member 500 according to one example may include a non-woven fabric or foam pad. This sound-absorbing member 500 attenuates the resonance of low sounds generated at the rear of the vibration plate 200, thereby minimizing the booming phenomenon caused by interference between low sounds and improving sound quality. In addition, the sound absorption member 500 prevents direct contact between the bottom structure 911 of the system rear cover 910 and the vibration plate 200 when the vibration plate 200 vibrates, thereby preventing the system rear cover 910 from coming into direct contact with the vibration plate 200. It prevents the display device from shaking due to direct contact with the vibration plate 200.

The display device according to this example further includes a buffer member 600. The buffer member 600 is installed on the vibration plate 200 to be located around the vibration module 300. The cushioning member 600 according to one example may include a foam pad. This buffer member 600 prevents physical contact between the vibration module 300 and the display module 100, thereby preventing damage or damage to the vibration module 300 due to physical contact between the vibration module 300 and the display module 100. Prevent damage. To this end, the upper surface of the buffer member 600 is located between the upper surface of the vibration module 300 and the rear surface of the display module 100. That is, based on the front of the vibration plate 200, the height of the buffer member 600 is set higher than the height of the vibration module 300.

The buffer member 600 according to an example may have a polygonal shape or a circular shape surrounding each of the vibration module 300, that is, the first vibration element 310 and the second vibration element 330, but is not limited thereto. , may have various shapes such as lines or dots that can prevent physical contact between the vibration elements 310 and 330 and the display module 100.

As such, the display device according to the present example includes a vibration plate 200 that vibrates with the vibration of the vibration module 300 according to an input sound driving signal, and a display module 100 that vibrates in accordance with the vibration of the vibration plate 200. By including the sound (SW) generated according to the vibration of the display module 100 can be output to the front of the display panel 110. That is, in the display device according to this example, when the vibration module 300 is vibrated by an acoustic driving signal, sound pressure is generated in the air gap AG due to the vibration of the vibration plate 200 according to the vibration of the vibration module 300. This is generated, the display module 100 vibrates due to the sound pressure generated in the air gap (AG), and the sound (SW) generated by the vibration of the display panel 110 according to the vibration of the display module 100 is generated. It is output to the front of the display panel 110. In other words, the display device according to this example vibrates the display panel 110 by the vibration of the vibration plate 200 according to the vibration of the vibration module 300, so that the display panel 110 vibrates according to the vibration of the display panel 110 without a separate speaker. The generated sound (SW) is output to the front of the display panel 110.

Therefore, the display device according to this example enables accurate sound transmission and improves sound quality by outputting sound (SW) generated by vibration of the display panel 110 to the front of the display panel 110 rather than to the rear and bottom. This can increase the viewer’s sense of immersion. The display device according to this example can output a wide sound range and high-quality sound by vibrating the display panel 110 due to the vibration of the large-area vibrating plate 200, and can have a sound field that fills the entire screen, and can have a sound field that fills the entire screen. The viewer's sense of immersion can be improved due to the harmony (or coincidence) of sound and sound. In particular, the sound in the mid- to high-pitched range of 2Khz to 20Khz has strong linearity and must be output toward the viewer's ears to be transmitted to the viewer without loss or distortion. However, sound in the mid- to high-pitched range output from the lower and/or rear speakers mounted in a conventional display device cannot be properly transmitted to the viewer due to the output direction. On the other hand, since the display device according to this example outputs sound from the display panel 110 facing the viewer's ears, it is possible to directly transmit sound in the mid-to-high range to the viewer without loss or distortion, and through this, it is substantially close to the sound source. Sound can be provided to viewers.

Figure 2 is a cross-sectional view schematically showing a display device according to another example of the present application, in which the arrangement structure of the vibration plate is changed. Accordingly, in the following description, only the vibration plate and components related thereto will be described, and redundant descriptions of the remaining identical components will be omitted.

Referring to FIG. 2, in the display device according to this example, the vibration plate 200 is directly coupled (or attached) to the rear of the display module 100. The vibration plate 200 may be supported by the plate fixing member 250, but since the vibration plate 200 is attached to the display module 100, the plate fixing member 250 may be omitted.

The system of the vibration module 300 according to this example is attached to the rear of the vibration plate 200 facing the floor structure 911 of the rear cover 910, and vibrates the vibration plate 200 according to the input acoustic driving signal. . As described above, the vibration module 300 may include a first vibration element 310 and a second vibration element 330.

As described above, each of the first vibration element 310 and the second vibration element 330 according to an example includes a piezoelectric material layer, a first electrode disposed on the front side of the piezoelectric material layer, and a back side of the piezoelectric material layer. It may include a second electrode.

As such, the display device according to the present example has the same effect as the display device shown in FIG. 1, but the vibration of the vibration plate 200 is directly transmitted to the display module 100 and the display panel 110 vibrates. The sound quality or sound pressure of the sound (SW) can be further improved.

FIG. 3 is a diagram for explaining a computing device according to an example of the present application, FIG. 4 is a cross-sectional view of a display device showing a cross-section along line II' shown in FIG. 3, and FIG. 5 is a diagram showing a cross-section of a display device shown in FIG. 3. It is a cross-sectional view of the display device taken along line II-II', and FIG. 6 is a rear view showing the back of the display module shown in FIG. 4.

3 to 6, the computing device according to the present example includes a system body 10 and a display device 30 rotatably coupled to the system body 10 through a hinge portion 20. do.

The system main body 10 includes a main board, various circuits mounted on the main board, various storage media, peripheral devices, a keyboard, and a power supply device. Various circuits mounted on the main board include a central control circuit for processing various information, an image processing circuit for processing data under the control of the central control circuit, and a sound processing circuit for processing sound under the control of the central control circuit. It is composed. This system main body 10 processes various information and generates video data and sound signals and provides them to the display device 30.

The hinge unit 20 is installed between the system body 10 and the display device 30 and rotatably supports the lower side of the display device 30.

The display device 30 is rotatably installed on the hinge unit 20 to cover the upper surface of the system main body 10 or is positioned at a predetermined angle from the upper surface of the system main body 10 using the hinge unit 20 as a rotation axis. It unfolds. This display device 30 displays an image corresponding to the video data according to the video data and timing control signal provided from the system main body 10, and produces sound (SW) corresponding to the sound signal provided from the system main body 10. Outputs . Here, the sound signal may be synchronized with the video signal or may not be synchronized with the video signal.

The display device 30 according to one example may include a display module 100, a vibration plate 200, a vibration module 300, a system rear cover 910, and a system front cover 930.

The display module 100 includes a display panel 110, a panel driving circuit 120, a backlight unit 130, a panel guide 140, and a support cover 150.

The display panel 110 displays an image using light emitted from the backlight unit 130, and includes a lower substrate 111, an upper substrate 113, a lower polarizing member 115, and an upper polarizing member 117. ) may include.

The lower substrate 111 is a thin film transistor array substrate and includes a pixel array having a plurality of pixels formed in each pixel area crossed by a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels includes a thin film transistor connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

The lower substrate 111 further includes a pad portion provided on the first edge and a gate driving circuit provided on the second edge.

The pad unit supplies signals supplied from the outside to the pixel array and the gate driving circuit. For example, the pad unit may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines, and a plurality of gate input pads connected to the gate driving circuit through a gate control signal line.

The gate driving circuit may be built into (or integrated into) the first edge of the lower substrate 111 to be connected one-to-one with a plurality of gate lines. In this case, the gate driving circuit may be a shift register including a transistor formed through the same process as the thin film transistor provided in the pixel area. Optionally, the gate driving circuit may not be built into the lower substrate 111 but may be formed in the panel driving circuit 120.

The upper substrate 113 is a color filter array substrate and includes a pixel defining pattern defining an opening area overlapping each pixel area formed on the lower substrate 111, and a color filter layer formed in the opening area. This upper substrate 113 is bonded to the lower substrate 111 with the liquid crystal layer interposed therebetween using a sealant.

The liquid crystal layer is interposed between the lower substrate 111 and the upper substrate 113, and the arrangement direction of liquid crystal molecules changes according to the electric field formed by the data voltage and common voltage applied to the pixel electrode for each pixel. It consists of

The lower polarizing member 115 is attached to the lower surface of the lower substrate 111 and polarizes the light incident from the backlight unit 130 along the first polarization axis to irradiate the lower substrate 111.

The upper polarizing member 117 is attached to the upper surface of the upper substrate 113 and polarizes light that passes through the upper substrate 113 and is emitted to the outside.

In this way, the display panel 110 displays an image according to the light passing through the liquid crystal layer by driving the liquid crystal layer according to the electric field formed for each pixel by the data voltage and common voltage applied to each pixel.

The panel driving circuit unit 120 is connected to the pad unit provided on the display panel 110 and displays an image corresponding to video data supplied from the system main body 10 at each pixel. The panel driving circuit unit 120 according to one example includes a plurality of data flexible circuit films 121, a plurality of data driving integrated circuits 123, a printed circuit board 125, and a timing control circuit 127.

Each of the plurality of data flexible circuit films 121 is attached to a pad provided on the lower substrate 111 of the display panel 110 through a film attachment process. Each of these plurality of data flexible circuit films 121 is bent to surround each side of the display panel 110 and the backlight unit 130 and is connected to the printed circuit board 125 at the rear of the support cover 150.

Each of the plurality of data driving integrated circuits 123 is individually mounted on each of the plurality of data flexible circuit films 121. This data driving integrated circuit 123 receives pixel data and a data control signal provided from the timing control circuit 127, converts the pixel data into an analog data signal for each pixel according to the data control signal, and converts the pixel data into a data signal for each pixel in the corresponding data line. supply to. Optionally, each of the plurality of data driving integrated circuits 123 may be directly mounted on the first edge of the lower substrate 111 through a chip bonding process and connected to a plurality of data lines, in which case a plurality of data flexible circuit films is omitted.

The printed circuit board 125 is connected to a plurality of data flexible circuit films 121. The printed circuit board 125 supports the timing control circuit 127 and serves to transmit signals and power between components of the panel driving circuit unit 120. The printed circuit board 125 includes a user connector 125a connected to the system main body 10 through a cable, and first and second audio output connectors 125b and 125c connected to the vibration module 300.

The timing control circuit 127 is mounted on the printed circuit board 125 and receives video data and a timing synchronization signal provided from the system main body 10 through the user connector 125a of the printed circuit board 125. The timing control circuit 127 generates pixel data by aligning image data to suit the pixel arrangement structure based on the timing synchronization signal, and provides the generated pixel data to the corresponding data driving integrated circuit 123. Additionally, the timing control circuit 127 generates each of a data control signal and a gate control signal based on the timing synchronization signal, controls the driving timing of each of the plurality of data driving integrated circuits 123 through the data control signal, and controls the gate control signal. The driving timing of the gate driving circuit is controlled through a control signal.

Additionally, the panel driving circuit unit 120 may further include a plurality of data flexible circuit films and a plurality of gate driving integrated circuits. In this case, the lower substrate 111 of the display panel 110 further includes a gate pad portion provided at the third edge and having a plurality of gate pads connected to a plurality of gate lines through a plurality of gate link lines. Each of the plurality of gate flexible circuit films is attached to the gate pad provided on the lower substrate 111 of the display panel 110 through a film attachment process. Each of these plurality of gate flexible circuit films may be bent to the side of the display panel 110. Each of the plurality of gate driving integrated circuits is individually mounted on each of the plurality of gate flexible circuit films. This gate driving integrated circuit receives a gate control signal supplied from the timing control circuit 127 through a gate input pad, generates gate pulses according to the gate control signal, and supplies them to the gate line in a predetermined order. Optionally, each of the plurality of gate driving integrated circuits may be directly mounted on the third edge of the lower substrate 111 through a chip bonding process and connected to a plurality of gate lines, and may be connected to a gate input pad provided on the lower substrate 111. In this case, the plurality of gate flexible circuit films are omitted.

The backlight unit 130 is disposed on the back of the display panel 110 and radiates light to the back of the display panel 110. The backlight unit 130 according to one example includes a light guide plate 131, a light source unit 133, a reflective sheet 135, and an optical sheet unit 137.

The light guide plate 131 is arranged to overlap the display panel 110 and includes a light incident surface provided on one side wall. The light guide plate 131 may include a light-transmissive plastic or glass material. This light guide plate 131 causes light incident from the light source unit 133 through the light incident surface to proceed (or emit light) toward the display panel 110.

The light source unit 133 radiates light to the light incident surface provided on the light guide plate 131. The light source unit 133 according to an example includes a printed circuit board 133a for a light source, and a plurality of light emitting diode elements 133b mounted on the printed circuit board 133a for a light source to irradiate light to the light incident surface of the light guide plate 131. Includes. This light source unit 133 may be covered by a light source housing. The light source housing is arranged to cover the front of the panel guide 140 and the edge of the optical sheet 137, which are adjacent to each other with the light source unit 133 in between, and covers the upper part of the light source unit 133.

The reflective sheet 135 covers the rear side of the light guide plate 131. This reflective sheet 135 minimizes light loss by reflecting light incident from the light guide plate 131 toward the light guide plate 131.

The optical sheet portion 137 is disposed on the front of the light guide plate 131 to improve the luminance characteristics of light emitted from the light guide plate 131. The optical sheet unit 137 according to an example may include a lower diffusion sheet, a lower prism sheet, and an upper prism sheet, but is not limited thereto, and may include a diffusion sheet, a prism sheet, a dual brightness enhancement film, and a lenticular sheet. It may be made of a combination of one or more selected laminations, or it may be made of a single composite sheet that has the functions of diffusing and concentrating light. Since the present application outputs sound through the vibration of the display panel 110 in response to the vibration of the vibration plate 200, the loss occurs in the process of transmitting the vibration generated from the vibration plate 200 to the display panel 110. It is preferable that this is minimized, and for this purpose, it is more preferable that the optical sheet part according to the present application is made of a single composite sheet that has the functions of diffusing and concentrating light.

The panel guide 140 is accommodated in the support cover 150 and supports the light source unit 133 and the rear edge of the display panel 110. The panel guide 140 may include a panel support portion that supports the rear edge of the display panel 110, and a cover coupling portion that is concavely formed from the outer surface of the panel support portion.

The rear cover 150 supports the panel guide 140. The rear cover 150 may be made of metal or plastic, but is preferably made of metal to ensure the rigidity of the liquid crystal display device and to dissipate heat from the backlight unit 130.

The rear cover 150 according to one example includes a cover plate 151 and a cover side wall 153.

The cover plate 151 covers the rear of the backlight unit 130, supports the reflective sheet 135 of the backlight unit 130, and supports the panel guide 140. At this time, the panel guide 140 may be attached to the cover plate 151 using double-sided tape.

The cover side wall 153 is provided perpendicularly from the front edge of the cover plate 151 and surrounds the outer surface of the panel guide 140. At this time, the cover side wall 153 is inserted into the cover coupling portion provided on the panel guide 140.

Meanwhile, the cover plate 151 may include a central opening 151a that overlaps the rear edge of the display panel 110 or the rear edge of the backlight unit 130. In this case, the cover plate 151 overlaps the rear edge of the display panel 110 or the rear edge of the backlight unit 130, and its weight can be reduced by the size of the central opening 151a. In this case, double-sided tape may be interposed between the cover plate 151 and the reflective sheet 135.

Additionally, the display module 100 according to this example further includes a light blocking member 160. The light blocking member 160 includes the front of the panel guide 140 adjacent to the light source unit 133, the printed circuit board 133a for the light source of the light source unit 133, and the optical sheet unit 137 adjacent to the light source unit 133. It is arranged to cover the edge of the light source unit 133 to prevent light leakage. One side of the light blocking member 160 may extend to cover the side of the panel guide 140 adjacent to the light source unit 133, the support side wall 153 of the support cover 150, and the rear edge of the cover plate 151. This light blocking member 160 may be a single-sided tape with a black color.

The display module 100 according to this example may further include a panel coupling member 170. The panel coupling member 170 is interposed between the rear edge of the display panel 110 and the panel guide 140 to attach the display panel 110 to the panel guide 140. That is, the display panel 110 may be attached to the panel guide 140 via the panel coupling member 170. At this time, the panel coupling member 170 overlapping the light source unit 130 is attached to the light blocking member 160. The panel coupling member 170 according to one example may be a double-sided tape or a double-sided foam tape.

In this way, the display module 100 displays an image using the light provided to the display panel 110 from the backlight unit 130, and the display module 100 responds to the vibration of the display panel 110 in response to the vibration of the vibrating plate 200. The sound (SW) generated accordingly is output in front of the display panel 110, that is, toward the viewer's face. At this time, it is more desirable for the display module 100 to have a thin (or slim) structure of 4 mm or less so that it can have the same amount of vibration as the vibration plate 200.

The vibration plate 200 is coupled to the rear of the display module 100. That is, the vibration plate 200 is coupled to the rear of the support cover 150 via the plate fixing member 250, thereby covering the opening 151a of the support cover 150. As described above, the vibration plate 200 is made of any one of magnesium alloy material, magnesium lithium alloy material, and aluminum alloy material, and redundant description thereof will be omitted.

The plate fixing member 250 is interposed between the cover plate 151 of the support cover 150 and the vibration plate 200, and supports the vibration plate 200 and holds the display module 100, that is, the reflective sheet 135. ) and provide an air gap (AG) between the vibration plate 200. Here, the air gap AG may be defined as a vibration space for vibration of the vibration plate 200.

The vibration module 300 is disposed on the front of the vibration plate 200 to face the reflective sheet 135 of the backlight unit 130 through the opening 151a of the support cover 150. This vibration module 300 vibrates according to an input acoustic driving signal directly input from the system body 10 or indirectly input through the printed circuit board 125 of the display module 100 to generate the vibration plate 200. Vibrate. The vibration module 300 according to this example includes a first vibration element 310 and a second vibration element 330 that are attached to the front of the vibration plate 200 via an element adhesive member 350. do. Each of the first vibration element 310 and the second vibration element 330 includes the above-described piezoelectric material layer, and redundant description thereof will be omitted.

The rear of the vibration plate 200 may be divided into first to third regions. In this case, the exact center of the first vibration element 310 is disposed at the exact center of the first area of the vibration plate 200, and the exact center of the second vibration element 330 is located at the exact center of the third area of the vibration plate 200. It can be placed in the center. That is, the first vibration element 310 and the second vibration element 330 may be arranged symmetrically with respect to the center of the vibration plate 200, but are not necessarily limited to this and may be asymmetrical to each other.

The system rear cover 910 accommodates the vibration plate 200 and the display module 100 to which the vibration module 300 is coupled. The system rear cover 910 according to one example may include a bottom structure 911 and a side wall structure 913.

The bottom structure 911 is the outermost rear structure located at the rear of the display device, supports the rear edge of the support cover 150, and covers the rear of the vibration plate 200. At this time, the floor structure 911 is spaced apart from the vibration plate 200 by a set distance so as not to physically contact the vibration plate 200 when the vibration plate 200 vibrates.

The side wall structure 913 is an outermost side structure located on the side of the display device, and is provided at the edge of the floor structure 911 to cover the side surfaces of the display module 100 and the side surfaces of the vibration plate 200.

The system front cover 930 is arranged to cover the front edge of the display panel 110. That is, the system front cover 930 hides the non-display area of the display panel 110 and the panel driving circuit unit 120. This system front cover 930 is coupled to the side wall structure 913 of the system rear cover 910 by a fastening member such as a hook, thereby covering the entire front of the display module 100 except for the display area of the display panel 110. .

The display device according to this example may further include a sound absorption member 500. The sound-absorbing member 500 is disposed on the rear side of the vibration plate 200. The sound-absorbing member 500 according to one example is installed on the bottom structure 911 of the system rear cover 910 to face the rear of the vibration plate 200. Since it is the same as described above, redundant description thereof will be omitted. do.

Additionally, the display device according to this example further includes a buffer member 600. The buffer member 600 is installed on the vibration plate 200 to be located around the vibration elements 310 and 330. The height of the cushioning member 600 is set higher than the height of the vibration elements 310 and 330, based on the front of the vibration plate 200. The shock absorbing member 600 according to an example may include a foam pad and may have a polygonal or circular shape surrounding the vibrating elements 310 and 330, but is not limited thereto, and may have a polygonal or circular shape surrounding the vibrating elements 310 and 330. It may have various shapes, such as lines or dots, that can prevent physical contact between the reflective sheet 135 of the backlight unit 130 and the reflective sheet 135 of the backlight unit 130.

Figure 7 is a diagram for explaining the circuit connection structure of the system main body, the printed circuit board, and the vibration module in an example of the present application.

When FIG. 7 is combined with FIG. 3, the computing device according to this example can generate an acoustic driving signal in the system main body 10 and supply it to the vibration module 300 through the display module 100. That is, the vibration module 300 can be driven by an acoustic driving signal supplied from the system main body 10 through the display module 100.

The main board 15 of the system main body 10 according to this example includes a sound processing circuit 15a, an audio amplifier 15b, a video processing circuit 15c, and a system connector 15d.

The sound processing circuit 15a generates sound signals from digital sound data under the control of a central control circuit. This sound processing circuit 15a can be expressed as a sound card.

The audio amplifier 15b amplifies the sound signal supplied from the sound processing circuit 15a and generates an sound driving signal. The audio amplifier 15b according to the present application can generate an audio driving signal by amplifying the audio line input signal supplied from the audio processing circuit 15a to the earphone terminal mounted on the main board 15. This acoustic driving signal is supplied to the system connector 15c provided on the main board 15.

The acoustic driving signal according to one example may include a left acoustic driving signal having a left acoustic driving signal of positive polarity and a left driving signal of negative polarity, and a right driving signal having a right acoustic driving signal of positive polarity and a right driving signal of negative polarity. You can. An acoustic driving signal according to another example may include a left acoustic driving signal of positive polarity, a right acoustic driving signal of positive polarity, and a ground signal of negative polarity.

The video processing circuit 15c generates video data from an image source and outputs it to the system connector 15c.

The system connector 15c includes display signal terminals and audio signal terminals. Here, the display signal terminals include data interface signal terminals for transmitting video data generated in the video processing circuit 15c to the printed circuit board 125, power terminals for panel driving, and power terminals for backlight driving. It can be included. The audio signal terminals may include sound output terminals for transmitting the sound driving signal generated by the audio amplifier 15b to the printed circuit board 125.

The system connector 15c is connected to the printed circuit board 125 of the display module 100 through the user cable 190. The user cable 190 includes a plurality of signal wires connected one-to-one to terminals provided in the system connector 15c. In particular, the user cable 190 includes a left sound signal line (LSL), a right sound signal line (RSL), and a sound ground signal line (SGL) connected to the sound output terminal of the system connector 15c.

The printed circuit board 125 of the display module 100 includes a user connector 125a, a first audio output connector 125b, and a second audio output connector 125c.

The user connector 125a is connected to the system connector 15c of the main board 15 through the user cable 190, and contains various audio signals supplied from the main board 15 through the user cable 190. Receive a signal.

The first sound output connector 125b is connected to the user connector 125a through a signal transmission line provided on the printed circuit board 125, and transmits the left sound driving signal supplied through the user connector 125a to the first vibration element. Output as (310). This first sound output connector 125b is connected to the first vibration element 310 through the first flexible circuit cable 312. Accordingly, the first vibration element 310 is formed according to the left sound drive signal of positive polarity and the left sound drive signal of negative polarity supplied from the first sound output connector 125b through the first flexible circuit cable 312, or is formed according to the left sound drive signal of positive polarity. The vibrating plate is vibrated by the electric field formed according to the positive left acoustic drive signal and the negative ground signal.

The second sound output connector 125c is connected to the user connector 125a through a signal transmission line provided on the printed circuit board 125, and transmits the right sound driving signal supplied through the user connector 125a to the second vibration element. Output as (330). This second sound output connector 125c is connected to the second vibration element 330 through the second flexible circuit cable 332. Accordingly, the second vibration element 330 is formed according to the positive right sound driving signal and the negative right sound driving signal supplied from the second sound output connector 125c through the second flexible circuit cable 332, or is formed in positive polarity. The vibrating plate is vibrated by the electric field formed according to the positive right acoustic drive signal and the negative ground signal.

In this example, an acoustic driving signal is transmitted to the vibration module 300 through the user cable 190 connected between the display module 100 and the main board 15 and the printed circuit board 125 of the display module 100. By supplying the acoustic driving signal to the vibration module 300 without a separate cable.

Meanwhile, the flexible circuit cables 312 and 332 of the vibration module 300 may be directly connected to the main board 15 without being connected to the printed circuit board 125 of the display module 100. In this case, the vibration module ( 300 may be driven according to an acoustic driving signal output from the audio amplifier 15b of the main board 15. However, when connecting the flexible circuit cables 312 and 332 of the vibration module 300 directly to the main board 15, the flexible circuit cables 312 and 332 of the vibration module 300 are connected through the hinge portion 20. Since it must be connected to the main board 15 placed on the system body 10, the length of the flexible circuit cables 312 and 332 increases, which increases the cost and reduces the assemblage between the system body 10 and the display device 30. This may deteriorate. Accordingly, the flexible circuit cables 312 and 332 of the vibration module 300 are preferably connected to the printed circuit board 125 of the display module 100, as described above.

FIG. 8 is a diagram for explaining the circuit connection structure of the system main body, the printed circuit board, and the vibration module in another example of the present application, which is constructed by changing the arrangement position of the audio amplifier shown in FIG. 7. Accordingly, in the following description, only the audio amplifier and its related components will be described, and redundant descriptions of the remaining components will be omitted.

When FIG. 8 is combined with FIG. 3, the computing device according to this example can generate an acoustic driving signal in the display module 100 and supply it to the vibration module 300. That is, the vibration module 300 may be driven by an acoustic driving signal generated and supplied from the display module 100.

The main board 15 of the system body 10 according to this example includes an audio processing circuit 15a, a video processing circuit 15c, and a system connector 15d. In this main board 15, the audio amplifier is omitted from the main board shown in FIG. 7, and the sound signal generated in the sound processing circuit 15a is supplied to the display module 100 through the system connector 15d without amplification. . Accordingly, the main board 15 according to this example displays two or more audio driving voltages and two or more audio ground voltages for driving the vibration module 300 along with the sound signal generated in the sound processing circuit 15a. Supplied to module (100). To this end, the audio signal terminals of the system connector 15d may further include two or more audio driving voltage terminals and two or more audio ground voltage terminals.

The printed circuit board 125 of the display module 100 includes a user connector 125a, a first audio amplifier 128, a second audio amplifier 129, a first audio output connector 125b, and a second audio output connector. Includes a connector 125c.

The user connector 125a is connected to the system connector 15c of the main board 15 through the user cable 190, and contains various audio signals supplied from the main board 15 through the user cable 190. Receive a signal.

The first audio amplifier 128 is connected to the user connector 125a through a signal transmission line provided on the printed circuit board 125. This first audio amplifier 128 receives the left sound signal, two or more audio driving voltages, and two or more audio ground voltages supplied through the user connector 125a, and receives two or more audio driving voltages and two audio ground voltages. The left sound signal can be amplified using the above audio ground voltage to generate a left sound driving signal. As another example, the second audio amplifier 129 receives the left sound signal and two or more backlight driving power supplies supplied through the user connector 125a, and uses the two or more backlight driving power supplies to generate the left sound signal. A left acoustic driving signal can be generated by amplification. In this case, the main board 15 receives two or more audio driving voltages and two or more audio ground voltages, and does not output the received two or more audio driving voltages and two or more audio ground voltages to the system connector 15c. Therefore, the number of terminals of each of the system connector 15c and the user connector 125a may be reduced.

The second audio amplifier 129 is connected to the user connector 125a through a signal transmission line provided on the printed circuit board 125. As an example, the second audio amplifier 129 receives the right sound signal, two or more audio driving voltages, and two or more audio ground voltages supplied through the user connector 125a, and receives the two or more audio driving voltages A right sound driving signal can be generated by amplifying the right sound signal using two or more audio ground voltages. As another example, the second audio amplifier 129 receives the right sound signal and two or more backlight driving power supplies supplied through the user connector 125a, and uses the two or more backlight driving power supplies to generate the right sound signal. By amplifying, the right acoustic driving signal can be generated.

The first audio output connector 125b is connected to the first audio amplifier 128 through a signal transmission line provided on the printed circuit board 125, and receives the left audio driving signal supplied from the first audio amplifier 128. 1 Output to the vibration element 310. This first sound output connector 125b is connected to the first vibration element 310 through the first flexible circuit cable 312. Accordingly, the first vibration element 310 is formed according to the left sound drive signal of positive polarity and the left sound drive signal of negative polarity supplied from the first sound output connector 125b through the first flexible circuit cable 312, or is formed according to the left sound drive signal of positive polarity. The vibrating plate is vibrated by the electric field formed according to the positive left acoustic drive signal and the negative ground signal.

The second audio output connector 125c is connected to the second audio amplifier 129 through a signal transmission line provided on the printed circuit board 125, and receives the right audio driving signal supplied from the second audio amplifier 129. 2 Output to the vibration element 330. This second sound output connector 125c is connected to the second vibration element 330 through the second flexible circuit cable 332. Accordingly, the second vibration element 330 is formed according to the positive right sound driving signal and the negative right sound driving signal supplied from the second sound output connector 125c through the second flexible circuit cable 332, or is formed in positive polarity. The vibrating plate is vibrated by the electric field formed according to the positive right acoustic drive signal and the negative ground signal.

In this example, the audio amplifiers 128 and 129 that generate sound driving signals are mounted on the printed circuit board 125, so that the audio signal is transmitted from the main board 150 to the printed circuit board 125 of the display module 100. Loss of the acoustic driving signal can be minimized, and signal interference between the acoustic driving signal and the display signal generated from the user cable 190 can be minimized, thereby minimizing distortion of the display signal.

FIG. 9 is a graph showing a comparison of sound output characteristics between a computing device of a comparative example and a computing device according to an example of the present application. In Figure 9, the horizontal axis represents frequency, and the vertical axis represents sound pressure. Here, the comparative example computing device is the simulation result for LG Electronics' laptop Gram 15.

In Figure 9, the first graph (G1) shows the sound output characteristics of the built-in speakers mounted on the left and right sides of the system main body, and the second graph (G2) shows the vibration of the display panel in response to the vibration of the large-area vibration plate. Shows the acoustic output characteristics according to the

As shown in the first graph (G1) and the second graph (G1), it can be seen that the computing device according to the present application has a sound pressure that is more than 6 dB higher than the comparative example and an expanded sound range reproduction width.

As described above, in an example of the present application, sound in a wide sound range can be output through the vibration of the display panel by vibrating the display panel through the vibration of a large-area vibrating plate. Since this application uses a large-area vibrating plate corresponding to the size of the display panel, it can output high-quality sound with a higher sound pressure compared to a voice coil-type speaker using a small vibrating plate. In particular, this application relates to part or all of a large-area display panel based on the vibration of a large-area vibrating plate made of a magnesium alloy material, a magnesium-lithium alloy material, or an aluminum alloy material, which has the characteristics of high specific rigidity and high vibration damping ability. By vibrating, sound in the low-pitched range can be output, and the sound pressure in the mid- to high-pitched range (for example, above 500 Hz) can be increased to greatly improve the sound output characteristics in the mid-to-high range. This allows rich sound in all ranges. Can be printed.

In addition, since the present application outputs sound from the display panel facing the viewer's face toward the viewer's ears, it is possible to directly transmit sound in the mid-range of 2Khz or higher, which has strong straightness, to the viewer, and through this, sound that is substantially close to the original sound. can be delivered to viewers, and through this, the viewer's sense of immersion can be increased.

In addition, since this application can output sound through the vibration of the display panel without a speaker built into the system body, the weight of the system body can be reduced by removing the built-in speaker, or the space by removing the built-in speaker can be used to save space for the battery. The size of the battery can be increased by utilizing the placement space.

Figure 10 is another cross-sectional view taken along line II' shown in Figure 3, which is constructed by changing the arrangement structure of the vibration module. Accordingly, in the following description, only the vibration module and components related thereto will be described, and redundant description of the remaining components will be omitted.

10 with FIG. 3, in the computing device according to the present example, each of the first vibration element 310 and the second vibration element of the vibration module 300 is connected to the bottom structure 911 of the system rear cover 910 and It is the same as the first vibration element shown in FIGS. 3 to 8, except that it is attached to the rear of the vibration plate 200 via the element adhesive member 350 so as to face each other.

In this example, as the vibration module 300 is attached to the rear of the vibration plate 200, the height of the plate fixing member 250 is set to prevent physical contact between the vibration module 300 and the display module 100. (or thickness) can be reduced, thereby reducing the cost of the plate fixing member 250. In addition, in this example, by forming only an air gap (AG) between the display module 100 and the vibration plate 200, the vibration of the vibration plate 200 can be transmitted to the display module 100 without attenuation, resulting in sound pressure. This can be increased.

FIG. 11 is another cross-sectional view taken along the line II' shown in FIG. 3, which is constructed by changing the arrangement structure of the vibration plate. Accordingly, in the following description, only the vibration plate, vibration module, and components related thereto will be described, and redundant description of the remaining components will be omitted.

11 with FIG. 3, in the computing device according to the present example, the vibration plate 200 is coupled to the display module 100 and is attached to the rear of the reflective sheet 135 constituting the backlight unit 130. . The vibration plate 200 according to this example has the same size as the light guide plate 131 of the backlight unit 130. This vibration plate 200 may be attached to the cover plate 151 of the support cover 150 via the plate fixing member 250.

In this example, each of the first vibration element 310 and the second vibration element of the vibration module 300 vibrates via the element adhesive member 350 so as to face the bottom structure 911 of the system rear cover 910. Except that it is attached to the rear of the plate 200, it is the same as the first vibration element shown in FIGS. 3 to 8.

The vibration module 300 according to this example may further include a cushion pad 370 attached to each of the first vibration element 310 and the second vibration element.

The cushion pad 370 is attached to the back of each of the first vibration element 310 and the second vibration element facing the bottom structure 911 of the system rear cover 910. The cushion pad 370 according to one example may include a foam pad. This cushion member 600 prevents physical contact between the vibration module 300 and the system rear cover 910, thereby preventing the vibration module 300 from causing physical contact between the vibration module 300 and the system rear cover 910. Prevent damage or breakage.

The display device according to this example may further include a sound absorption member 500. The sound-absorbing member 500 is disposed on the rear of the vibration plate 200 and the rear of the vibration module 300 attached to the vibration plate 200. That is, the sound-absorbing member 500 is installed on the cover plate 151 of the support cover 150 that overlaps the vibration plate 200 and the floor structure 911 of the system rear cover 910. Since it is the same as above, redundant description thereof will be omitted.

Additionally, in this example, the cover plate 151 of the support cover 150 may be formed in a flat shape without an opening 151a to support the sound-absorbing member 500. In this case, a sealed air gap AG is provided between the cover plate 151 of the support cover 150 and the vibration plate 200, so that the sound pressure generated when the vibration plate 200 vibrates can be increased.

As such, this example has the same effect as the computing device shown in FIGS. 3 to 8, but transmits the vibration generated from the large-area vibration plate 200 directly to the display module 100 to generate the display panel 110. ) can be further improved by vibrating the sound quality or sound pressure of the sound (SW) generated according to the vibration of the display panel 110. In particular, this example produces low-pitched sounds by vibrating the display panel according to the vibration of the vibration plate 200 made of a magnesium alloy material, magnesium lithium alloy material, or aluminum alloy material, which has the characteristics of high specific rigidity and high vibration damping ability. The sound pressure in the mid-to-high range can be increased, greatly improving the sound output characteristics in the mid-to-high range, and through this, rich sound can be output in all ranges. Here, when the vibration module 300 directly vibrates the reflective sheet 135 without using the vibration plate 200, the reflective sheet 135 has a relatively low specific stiffness compared to the vibration plate 200 according to the present application. Because it has a low vibration damping ability, the sound characteristics in the mid to high range may be deteriorated.

FIG. 12 is another cross-sectional view taken along line II' shown in FIG. 3, which is constructed by changing the structure of the support cover shown in FIG. 11. Accordingly, in the following description, only the support cover and components related thereto will be described, and redundant description of the remaining components will be omitted.

12 with FIG. 3, the support cover 150 according to the present example includes a flat cover plate 151, a cover side wall 153 provided at the edge of the cover plate 151, and a vibration module 300. It includes a concave portion 155 formed concavely from the overlapping cover plate 151.

The cover plate 151 is formed in a flat shape without an opening 151a and covers the rear surface of the vibration plate 200.

The cover side wall 153 is provided perpendicularly from the front edge of the cover plate 151 and surrounds the outer surface of the panel guide 140.

The concave portion 155 is formed concavely from the cover plate 151 that overlaps the vibration module 300. The concave portion 155 is formed concavely from the cover plate 151 to prevent contact between the vibration module 300 and the cover plate 151 when the vibration module 300 vibrates. Accordingly, each of the first vibration element 310 and the second vibration element of the vibration module 300 may be inserted into the concave portion 155 when vibrating.

The above-described sound-absorbing member 500 is disposed on the bottom surface of the concave portion 155.

As such, the support cover 150 may be disposed as close to the vibration plate 200 as the remaining portion of the cover plate 151 excluding the concave portion 155 is as deep as the concave portion 155 . Accordingly, this example increases the sound pressure transmitted to the display module 100 according to the vibration of the vibration plate 200 by reducing the distance between the cover plate 151 and the vibration plate 200 excluding the concave portion 155. You can do it.

As such, this example has the same effect as the computing device shown in FIG. 11, but as the distance between the cover plate 151 and the vibration plate 200 excluding the concave portion 155 decreases, the sound (SW) Sound quality or sound pressure can be further improved.

FIG. 13 is another cross-sectional view taken along the line II' shown in FIG. 3, and FIG. 14 is a cross-sectional view for explaining the vibration element shown in FIG. 13, which is similar to the structure and vibration of the support cover shown in FIG. 11 or 12. It was created by changing the structure of the module. Accordingly, in the following description, only the support cover, vibration module, and components related thereto will be described, and redundant description of the remaining components will be omitted.

Referring to FIG. 13, the support cover 150 according to this example includes a flat cover plate 151, a cover side wall 153 provided at the edge of the cover plate 151, and a cover that overlaps the vibration module 300. It includes a first module insertion hole 159 and a second module insertion hole provided in the plate 151.

The cover plate 151 is formed in a flat shape and covers the rear side of the vibration plate 200.

The cover side wall 153 is provided perpendicularly from the front edge of the cover plate 151 and surrounds the outer surface of the panel guide 140.

Each of the first module insertion hole 159 and the second module insertion hole is formed in the cover plate 151 overlapping the vibration module 300 to expose a portion of the vibration plate 200.

The vibration module 300 according to this example includes a first vibration element 310 coupled to the vibration plate 200 through the first module insertion hole 159 of the support cover 150, and a second vibration element 310 of the support cover 150. It includes a second vibration element coupled to the vibration plate 200 through the module insertion hole. Each of the first vibration element 310 and the second vibration element may include an actuator including a magnet member, a bobbin, and a voice coil. This actuator vibrates the vibration plate 200 connected to the bobbin by vibrating the bobbin according to the applied magnetic field caused by the current flowing in the voice coil and the external magnetic field caused by the magnet member according to the acoustic driving signal applied based on Fleming's left hand rule. .

Each of the first vibration element 310 and the second vibration element according to an example includes a module frame 311, a bobbin 312, a magnet member 313, a coil 314, a center pole 315, and a damper 316. ) includes.

The module frame 311 is supported on the rear of the support cover 150. The module frame 311 according to one example includes a frame body 311a, an upper plate 311b, and a fixing bracket 311c.

The frame body 311a is arranged to overlap the module insertion hole 159 provided in the support cover 150. This frame body 311a serves as a lower plate supporting the magnet member 313. The upper portion of the frame body 311a may be inserted into the module insertion hole 159.

The upper plate 311b protrudes from the front edge of the frame body 311a to have a cylindrical shape with a hollow portion. Accordingly, the lower plate 311a and the upper plate 311b may be formed as one body having a “U” shape. The lower plate 311a and upper plate 311b are not limited to those terms and may be expressed by other terms such as yoke.

The fixing bracket 311c protrudes from one side and the other side of the frame body 311a, respectively. This fixing bracket 311c is fixed to the cover plate 151 of the support cover 150 by the module fixing member 390, and as a result, each of the first vibration element 310 and the second vibration element is connected to the support cover 150. ) is fixed to the cover plate 151. Here, the module fixing member 390 may be a screw or bolt that passes through the fixing bracket 311c and is fastened to the cover plate 151.

Optionally, the module frame 311 may be supported on the bottom structure 911 of the system rear cover 910 through an adhesive member such as double-sided tape.

The bobbin 312 vibrates the vibration plate 200. The bobbin 312 according to one example is formed in a cylindrical shape with a hollow portion 312a and is coupled to the back of the vibration plate 200. The bobbin 312 may be implemented as an annular (or cylindrical) structure formed of a material processed from pulp or paper, aluminum, magnesium or its alloy, synthetic resin such as polypropylene, or polyamide-based fiber. You can. The bobbin 312 may vibrate, for example, move up and down by magnetic force.

A bobbin ring 317 is coupled to the upper part of the bobbin 312, and the bobbin ring 317 may be coupled to the rear of the vibration plate 200 via a double-sided adhesive member.

The magnet member 313 is provided on the module frame 311 to be accommodated in the hollow portion 312a of the bobbin 312. The magnetic member 313 may be a permanent magnet having a cylindrical shape so that it can be inserted into the hollow portion 312a of the bobbin 312. The magnet member 313 according to one example may be implemented as a sintered magnet such as barium ferrite, and the material of the magnet member 313 may be iron trioxide (Fe2O3), barium carbonate (BaCO3), neodymium magnet, or magnetic force. Strontium ferrite with improved composition, cast alloy magnets of aluminum (Al), nickel (Ni), and cobalt (Co) may be used, but are not limited thereto. For example, a neodymium magnet may be neodymium-iron-boron (Nd-Fe-B).

The coil 314 is wound to surround the lower outer peripheral surface of the bobbin 312 and receives voice current from the outside. The coil 314 is raised and lowered together with the bobbin 312. Here, the coil 314 may be expressed as a voice coil or the like. When current is applied to the coil 314, the entire bobbin 312 vibrates according to Fleming's left-hand rule based on the applied magnetic field formed around the coil 314 and the external magnetic field formed around the magnet member 313. , For example, it moves up and down.

The center pole 315 is installed on the magnet member 313 to guide the vibration of the bobbin 312. That is, the center pole 315 is surrounded by the bobbin 312 by being inserted into the hollow portion 312a of the bobbin 312, which has a cylindrical shape. Here, the center pole 315 may be expressed as a lifting guider or pole pieces, etc.

The damper 316 may be installed between the module frame 311 and the bobbin 312. That is, the damper 316 may be installed between the frame body 311a of the module frame 311 and the upper outer peripheral surface of the bobbin 312. Damper 316 may be expressed by other terms such as spider, suspension, or edge. This damper 316 has a corrugated structure between one end and the other end and controls the vibration of the bobbin 312 by contracting and relaxing according to the vibration of the bobbin 312. That is, the damper 316 is connected between the bobbin 312 and the module frame 311 to limit the vibration distance of the bobbin 312 through restoring force. For example, when the bobbin 312 vibrates more than a certain distance or less than a certain distance, the bobbin 312 may return to its original position by the restoring force of the damper 316.

Each of the first vibration element 310 and the second vibration element according to this example may be expressed as an anti-magnetic type in which a magnet member 313 is inserted into the hollow portion 312a of the bobbin 312.

Optionally, each of the first vibration element 310 and the second vibration element according to the present example may be expressed as an external magnet type (or dynamic type) in which the magnet member 313 is arranged to surround the outside of the bobbin 312. . Here, the first vibration element 310 and the second vibration element of the external magnetic type each have a magnet member 313 provided between the lower plate 311a and the upper plate 311b, and the center pole 315 is connected to the bobbin 312. ), except that it is provided on the lower plate (311a) to be inserted into the hollow portion (312a) of ), so its description will be omitted.

As such, in this example, the vibration of the vibration plate 200 due to the vibration of the vibration module 300 made of an actuator is directly transmitted to the display module 100 to vibrate the display panel 110, thereby performing the computing shown in FIG. 11. It can have the same effect as the device. Additionally, in this example, the vibration plate 200 coupled to the vibration module 300 made of an actuator has heat dissipation characteristics similar to aluminum and thus serves as a heat sink that dissipates heat generated during operation of the actuator. Accordingly, this example can prevent image quality defects caused by a sudden temperature difference in a local area of the display module 100 that overlaps the actuator.

FIG. 15 is another cross-sectional view taken along line II' shown in FIG. 3, which is a modified configuration of the display device shown in FIG. 4. In the following description, only the changed configurations will be described in detail, the remaining configurations will be assigned the same reference numerals as those in FIGS. 3 to 8, and duplicate descriptions thereof will be omitted or briefly described.

15 with FIGS. 3 and 4, in the computing device according to the present example, the display device 30 includes a display module 100, a vibration plate 200, a vibration module 300, and a system rear cover 910. , and may include a system front cover 930.

The display module 100 is stored in the system rear cover 910 and displays images. The display module 100 according to one example includes a display panel 110 that displays an image, and a panel driving circuit that drives the display panel 110.

The display panel 110 may be a light-emitting display panel. The display panel 110 according to an example includes a pixel array substrate 111 having a pixel array 112 composed of a plurality of pixels, an encapsulation layer 114 that encapsulates the pixel array 112, and an encapsulation layer. It may include an optical film 116 attached to the upper surface of 114.

Each of the plurality of pixels is provided in a pixel area provided by pixel driving lines. Each of these plurality of pixels may include a pixel circuit having at least two thin film transistors and at least one capacitor, and a light emitting element that emits light by current supplied from the pixel circuit. As an example, the light emitting device may include an organic light emitting layer or a quantum dot light emitting layer. As another example, the light emitting device may include a micro light emitting diode.

The encapsulation layer 114 protects the thin film transistor and the light emitting device from external shock and prevents moisture from penetrating into the light emitting device.

The optical film 116 is attached to the upper surface of the encapsulation layer 114 via a transparent adhesive member. This optical film 116 changes the external light reflected by the thin film transistor and/or pixel driving lines provided on the pixel array substrate 111 into a circularly polarized state, thereby improving the visibility and contrast ratio of the display panel 110. It could be a film.

Additionally, the display panel 110 may further include a barrier layer and a touch electrode layer interposed between the encapsulation layer 114 and the optical film 116. Additionally, the display panel 110 may further include a color filter layer provided on the upper surface of the encapsulation layer 114.

Meanwhile, the encapsulation layer 114 may be replaced with an encapsulation substrate attached to the pixel array substrate 111 via a filler surrounding the pixel array 112. When the filler is formed of a transparent filler, the encapsulation substrate may be a transparent encapsulation substrate.

The panel driving circuit is connected to the pad provided on the display panel 110 and displays an image corresponding to video data supplied from the system main body 10 at each pixel. As shown in FIG. 5, the panel driving circuit unit according to one example includes a plurality of data flexible circuit films 121, a plurality of data driving integrated circuits 123, a printed circuit board 125, and a timing control circuit 127. ), and redundant description thereof will be omitted.

The vibration plate 200 is arranged to cover the rear of the display module 100. That is, the edge portion of the vibration plate 200 is coupled to the rear of the display panel 110 via the plate fixing member 250. As described above, the vibration plate 200 may be made of a magnesium alloy material, a magnesium lithium alloy material, or an aluminum alloy material.

The vibration module 300 is attached to the front of the vibration plate 200 via the device adhesive member 350, or, as shown in FIG. 10, is attached to the vibration plate 200 through the device adhesive member 350. ) can be attached to the back of the. This vibration module 300 includes the above-described first vibration element 310 and the second vibration element, which are the same as those described above, so redundant description thereof will be omitted.

As described above, a buffer member 600 is installed around the vibration module 300.

The system rear cover 910 accommodates the display module 100 and the vibration plate 200 coupled to the display module 100. As described above, the system rear cover 910 is provided on the floor structure 911 that covers the rear of the vibration plate 200, and on the edges of the floor structure 911, so as to connect the sides of the display module 100 and the vibration plate. It may include a sidewall structure 913 covering the sides of 200 .

The sound-absorbing member 500 as described above is disposed on the front of the floor structure 911, and the sound-absorbing member 500 covers the rear of the vibration plate 200.

The system front cover 930 is arranged to cover the front edge of the display panel 110 and hides the non-display area of the display panel 110 and the panel driving circuit unit 120.

As such, this example may have the same effect as the computing device shown in FIGS. 3 to 8.

FIG. 16 is another cross-sectional view taken along line II' shown in FIG. 3, which is constructed by changing the arrangement structure of the vibration plate in the display device shown in FIG. 15. Accordingly, in the following description, only the arrangement structure of the vibration plate and the components related thereto will be described in detail, the remaining components will be assigned the same reference numerals as those in FIGS. 3 to 8, and redundant description thereof will be omitted or briefly summarized. Let me explain.

3, 15, and 16, in the computing device according to this example, the vibration plate 200 is attached to the display panel 110 of the display module 100. The vibration plate 200 according to this example has the same size as the array substrate 111 of the display panel 110. This vibration plate 200 may be attached to the bottom structure 911 of the system rear cover 910 via a plate fixing member 250. Accordingly, a sealed air gap (AG) is provided between the bottom structure 911 of the system rear cover 910 and the vibration plate 200, thereby increasing the sound pressure generated when the vibration plate 200 vibrates.

In this example, each of the first vibration element 310 and the second vibration element of the vibration module 300 vibrates via the element adhesive member 350 so as to face the bottom structure 911 of the system rear cover 910. Except that it is attached to the rear of the plate 200, it is the same as the first vibration element shown in FIGS. 3 to 8.

As such, this example has the same effect as the computing device shown in FIGS. 3 to 8, but transmits the vibration generated from the large-area vibration plate 200 directly to the display module 100 to generate the display panel 110. ) can be further improved by vibrating the sound quality or sound pressure of the sound (SW) generated according to the vibration of the display panel 110. In particular, this example produces low-pitched sounds by vibrating the display panel according to the vibration of the vibration plate 200 made of a magnesium alloy material, magnesium lithium alloy material, or aluminum alloy material, which has the characteristics of high specific rigidity and high vibration damping ability. The sound pressure in the mid-to-high range can be increased, greatly improving the sound output characteristics in the mid-to-high range, and through this, rich sound can be output in all ranges. Here, when the vibration module 300 directly vibrates the display panel 110 without using the vibration plate 200, the array substrate 111 of the display panel 110 is the vibration plate 200 according to the present application. Because it has relatively low specific rigidity and low vibration damping ability, the sound characteristics in the mid to high range may be deteriorated.

FIG. 17 is another cross-sectional view taken along line II' shown in FIG. 3, which is constructed by replacing the display module of the display device shown in FIG. 13 with the display module shown in FIG. 16.

3 and 17, in the computing device according to this example, the display device 30 includes a display module 100, a vibration plate 200, a vibration module 300, a system rear cover 910, and The system may include a front cover 930.

The display module 100 is stored in the system rear cover 910 and displays images. The display module 100 according to an example includes a display panel 110 that displays an image, a panel driving circuit that drives the display panel 110, and a vibration module 300 while supporting the display panel 110. Includes a support cover 180.

The display panel 110 is a light-emitting display panel and has the same configuration as the display panel shown in FIG. 15, so duplicate description thereof will be omitted.

The panel driving circuit is connected to the pad provided on the display panel 110 and displays an image corresponding to video data supplied from the system main body 10 at each pixel. As shown in FIG. 5, the panel driving circuit unit according to one example includes a plurality of data flexible circuit films 121, a plurality of data driving integrated circuits 123, a printed circuit board 125, and a timing control circuit 127. ), and redundant description thereof will be omitted.

The vibration plate 200 is attached to the display panel 110 of the display module 100 and is built into the display module 100. The vibration plate 200 according to this example has the same size as the array substrate 111 of the display panel 110. This vibration plate 200 is attached to the front edge of the support cover 180 via a plate fixing member 250.

The support cover 180 is formed in a flat shape and covers the rear of the display panel 110. This support cover 180 includes a first module insertion hole 159 and a second module insertion hole provided in the cover plate 151 that overlaps the vibration module 300.

Each of the first module insertion hole 159 and the second module insertion hole is formed in the support cover 180 overlapping the vibration module 300 to expose a portion of the vibration plate 200.

The sound-absorbing member 500 as described above is disposed on the front of the support cover 180, and the sound-absorbing member 500 covers the rear of the vibration plate 200.

The vibration module 300 includes a first vibration element 310 and a second vibration element. Each of the first vibration element 310 and the second vibration element according to an example includes a module frame 311, a bobbin 312, a magnet member 313, a coil 314, a center pole 315, and a damper 316. ), which has the same configuration as the first vibration element shown in FIG. 14 described above, so duplicate description thereof will be omitted.

The system rear cover 910 is connected to the display module 100 in which the vibration plate 200 is built-in and the vibration plate 200 and accommodates the vibration module 300 coupled to the display module 100. This system rear cover 910 is provided on the floor structure 911 that covers the rear of the display module 100 and the rear of the vibration module 300, and on the edges of the floor structure 911, and is provided on the sides of the display module 100 and It may include a side wall structure 913 covering the sides of the vibration plate 200.

The system front cover 930 is arranged to cover the front edge of the display panel 110 and hides the non-display area of the display panel 110 and the panel driving circuit unit 120.

In this example, the vibration of the vibration plate 200 caused by the vibration of the vibration module 300 made of an actuator is directly transmitted to the display module 100 to vibrate the display panel 110, thereby performing the computing shown in FIG. 16. It can have the same effect as the device. Additionally, in this example, the vibration plate 200 coupled to the vibration module 300 has heat dissipation characteristics similar to aluminum and thus serves as a heat sink that dissipates heat generated when the vibration module 300 operates. Accordingly, this example can prevent poor image quality of the display panel 110 caused by a sudden temperature difference in the local area of the display module 100 that overlaps the vibration module 300, and furthermore, the display panel ( 110) luminous efficiency and brightness can be improved.

As described above, the computing device according to an example of the present application fills the entire screen by outputting the sound (SW) generated by vibration of the display panel 110 to the front of the display panel 110 rather than to the rear and bottom. It can have a sound field and can improve the viewer's sense of immersion due to the harmony (or coincidence) of video and sound. In particular, the computing device according to an example of the present application has a wide sound range and high sound quality by vibrating the display panel 110 by the vibration of the large-area vibration plate 200 made of a magnesium alloy material, a magnesium lithium alloy material, or an aluminum alloy material. sound can be output.

FIG. 18 is a diagram for explaining a computing device according to another example of the present application, FIG. 19 is a plan view showing the display module shown in FIG. 18, and FIG. 20 is a cross-sectional view taken along line III-III' shown in FIG. 19. , these consist of a tweeter module on the printed circuit board of the panel driving circuit part. Accordingly, in the following description, only the tweeter module and its related components will be described, the remaining components will be assigned the same reference numerals, and duplicate descriptions thereof will be omitted or briefly explained.

18 to 20, the display device 30 of the computing device according to this example includes a display module 100, a vibration plate 200, a vibration module 300, a tweeter module 700, and a system rear cover ( 910), and a system front cover 930.

The display module 100 includes a display panel 110, a panel driving circuit 120, a backlight unit 130, a panel guide 140, and a support cover 150. Except for the arrangement structure, the rest of the configuration is the same as the display device shown in FIGS. 3 to 17, so the same reference numerals are assigned to them, and redundant description thereof will be omitted.

The printed circuit board 125 of the panel driving circuit unit 120 is disposed on one side of the support cover 150 to face the system front cover 930. That is, the printed circuit board 125 is not disposed on the back of the support cover 150, but is disposed in a flat state on the side of the support cover 150. This printed circuit board 125 is supported in a flat state by a support bracket 157 that is double bent from the cover plate 151 of the support cover 150 adjacent to the system body 10.

Since each of the vibration plate 200 and the vibration module 300 is the same as the display device shown in FIGS. 3 to 17, the same reference numerals are assigned to them, and duplicate description thereof will be omitted.

The tweeter module 700 is disposed on the printed circuit board 125 of the panel driving circuit unit 120 and outputs high-pitched sound in response to an input sound driving signal. The tweeter module 700 according to one example includes a first tweeter 710 disposed on one edge of the printed circuit board 125, and a second tweeter 730 disposed on the other edge of the printed circuit board 125. do.

The first tweeter 710 includes a metal plate 711 disposed on one edge of the printed circuit board 125, a plate support member 712 supporting the metal plate 711, and a front surface of the printed circuit board 125. It includes a piezoelectric element 713 attached to the rear of the metal plate 711 so as to face the front surface.

The metal plate 711 may be made of the aforementioned magnesium alloy material, magnesium lithium alloy material, or aluminum alloy material. This metal plate 711 vibrates according to the vibration of the piezoelectric element 713 and outputs a high-pitched sound of 4 kHz or higher. For this purpose, the metal plate 711 preferably has a thickness of 0.1 mm to 0.5 mm. The metal plate 711 made of magnesium alloy, magnesium lithium alloy, or aluminum alloy is the lightest material among the metal materials of the mechanical structure and has high specific rigidity and relatively high vibration damping ability, so it is suitable for outputting high-pitched sounds. do.

The piezoelectric element 713 is attached to the back of the metal plate 711 via an adhesive 714 and is spaced apart from the front of the printed circuit board 125 by a preset distance. The piezoelectric element 713 vibrates the metal plate 711 by vibrating according to an input acoustic drive signal, for example, a left acoustic drive signal. The piezoelectric element 713 according to an example may include a piezoelectric material layer having a piezoelectric effect, a first electrode disposed on the front side of the piezoelectric material layer, and a second electrode disposed on the back side of the piezoelectric material layer. there is. Since this piezoelectric element 713 has the same configuration as the above-described vibration element, redundant description thereof will be omitted.

The plate support member 712 is disposed between the edge of the metal plate 711 and the front surface of the printed circuit board 125 to support the metal plate 711, thereby forming a piezoelectric element ( 713) is prevented from physically contacting the printed circuit board 125.

In this way, the first tweeter 710 produces high-pitched sound (HSW) through the vibration of the metal plate 711 according to the vibration of the piezoelectric element 713 according to the input sound drive signal, for example, the left sound drive signal. Output to the system front cover (930).

The second tweeter 730 is disposed on the other edge of the printed circuit board 125, and, like the first tweeter 710, includes a metal plate, a plate support member supporting the metal plate, and the front surface of the printed circuit board. Since it includes a piezoelectric element attached to the back of the metal plate to face the front, redundant description of this will be omitted. As such, the second tweeter 730 transmits high-pitched sound (HSW) to the system front cover 930 through the vibration of the metal plate according to the vibration of the piezoelectric element according to the input sound drive signal, for example, the right sound drive signal. Print to the side.

The system rear cover 910 accommodates the vibration plate 200 and the display module 100 to which the vibration module 300 is coupled. The system rear cover 910 according to one example includes a bottom structure 911 and a side wall structure 913, which are the same as those described above, so redundant description thereof will be omitted.

The system front cover 930 is arranged to cover the front edge of the display panel 110. That is, the system front cover 930 hides the non-display area of the display panel 110 and the panel driving circuit unit 120. This system front cover 930 is coupled to the side wall structure 913 of the system rear cover 910 by a fastening member such as a hook, thereby covering the entire front of the display module 100 except for the display area of the display panel 110. .

The system front cover 930 includes a plurality of sound emission holes 931 that overlap the tweeter module 700 disposed on the printed circuit board 125 of the panel driving circuit unit 120.

The plurality of sound emission holes 931 are formed at regular intervals in the area overlapping with the first and second tweeter modules 710 and 730, respectively, on the front of the system front cover 930, and the first and second tweeter modules 710 and 730 are formed at regular intervals. 2 The high-pitched sound (HSW) output from each of the tweeter modules 710 and 730 is passed through.

In this example, high-pitched sound (HSW) is output to the front of the display panel 110 through the tweeter module 700 disposed on the printed circuit board 125 of the panel driving circuit 120, thereby improving high-pitched sound quality. It can be improved further. In particular, in this example, since the tweeter module 700 facing the viewer's face outputs the tweeter sound toward the viewer's ears, the sound in the mid- to high-pitched range of 2Khz or higher, which has strong directivity, can be directly delivered to the viewer, and the vibration of the tweeter module Through the tweeter sound and the main sound caused by the vibration of the display panel, a sound close to the original sound can be delivered to the viewer, thereby increasing the viewer's sense of immersion.

Meanwhile, Figures 3 and 18 show that the computing device according to the present application is a laptop computer, but the computing device according to the present application has a structure in which the system body and the display device are connected by a hinge portion, such as a tablet computer or electronic notebook. It can be applied to portable information devices that have

In addition, the computing device according to the present application outputs sound through vibration of a display panel using a vibration plate and a vibration module, as shown in FIGS. 1 to 17, but is not limited to this, and includes a tweeter module shown in FIG. 18. Sound can be output using the built-in speaker mounted on the system body. Furthermore, as shown in FIG. 21, the computing device according to the present application produces a first sound output (SW1) using a built-in speaker mounted on the system body, and a second sound output according to the vibration of the display panel using a vibration plate and a vibration module. Three-dimensional sound can be realized through the sound output (SW2) and the third sound output (SW3) based on the vibration of the metal plate using the tweeter module.

Additionally, in the computing device according to the present application shown in FIGS. 1 to 17, the display device 30 can be used as a display device such as the television shown in FIG. 22, a monitor, navigation, an electronic pad, or a tablet computer. there is. The cross section of line II-I' shown in FIG. 22 is shown in any one of FIGS. 4, 10 to 13, and 15 to 17, and the cross section of line II-II' shown in FIG. 22 is shown in FIG. 5. is shown in The display device according to the present application shown in FIG. 22 outputs sound to the front of the display panel 110 through vibration of the display panel 110 using a vibration plate and a vibration module.

Furthermore, in the computing device according to the present application shown in FIGS. 18 to 20, the display device 30 can be used as a display device such as the television shown in FIG. 23, a monitor, navigation, an electronic pad, or a tablet computer. there is. The cross section of line II-I' shown in FIG. 23 is shown in any one of FIGS. 4, 10 to 13, and 15 to 17, and the cross section of line III-III' shown in FIG. 23 is shown in FIG. 20. is shown in The display device according to the present application shown in FIG. 23 produces a first sound (SW1) resulting from the vibration of a display panel using a vibration plate and a vibration module, and a second sound (SW2) resulting from the vibration of a metal plate using a tweeter module. By outputting to the front of the display panel 110, high-quality sound can be output.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which this application belongs that various substitutions, modifications, and changes are possible without departing from the technical details of the present application. It will be clear to those who have the knowledge of. Therefore, the scope of the present application is indicated by the claims described later, and the meaning and scope of the claims and all changes or modified forms derived from the equivalent concept should be interpreted as being included in the scope of the present application.

10: System body 15: Main board
20: Hinge portion 30: Display device
100: display module 110: display panel
120: panel driving circuit 130: backlight unit
140: panel guide 150: support cover
200: Vibration plate 250: Plate fixing member
300: Vibration module 310, 330: Vibration element
500: sound-absorbing member 600: buffering member
700: Twitter module 710, 730: Twitter
711: Metal plate 713: Piezoelectric element
910: System rear cover 930: System front cover
931: Acoustic outlet

Claims (38)

A display panel that displays images;
A vibration plate on the rear of the display panel;
a vibrating device on the vibrating plate and configured to vibrate the vibrating plate; and
comprising a pad disposed on the vibration plate adjacent to the vibration device,
the vibration device is not connected to the vibration plate through the pad,
Based on the thickness direction of the display panel, the thickness of the pad is thicker than the thickness of the vibration device. According to claim 1,
The pad is disposed between the vibration plate and the rear surface of the display panel. According to claim 1,
Further comprising a rear cover on the rear of the vibration plate,
The pad is disposed between the vibration plate and the rear cover, or the pad and the vibration device are spaced apart from the rear cover. According to claim 1,
The pad has a line shape or a dot shape,
The display device wherein the pad has a polygonal shape, a circular shape, or an elliptical shape surrounding the vibrating element. According to claim 1,
A display device wherein the upper surface of the pad is between the upper surface of the vibration device and the rear surface of the display panel. According to claim 1,
the pad is attached to the vibration device,
The display device wherein the pad is larger than the size of the vibration device. According to claim 1,
A display device further comprising an air gap between the vibration plate and the display panel. According to claim 1,
Further comprising a rear cover on the rear of the vibration plate,
A display device wherein the distance between the pad and the back cover is smaller than the distance between the vibration device and the back cover. According to claim 1,
a rear cover on the rear of the vibration plate; and
The display device further comprising an air gap between the vibration plate and the rear cover. According to clause 9,
A display device wherein the height of the pad is higher than the height of the vibration device. According to clause 9,
The display device is configured to be spaced apart from the rear cover or cover the vibration device. According to claim 1,
Further comprising a rear cover on the rear of the vibration plate,
The vibration device is attached to the rear of the vibration plate facing the rear cover,
The pad is attached to the side of the vibration device facing the rear cover. According to claim 1,
Further comprising a plate connection member between the vibration plate and the rear of the display panel,
The height of the plate connection member is greater than the distance between the vibration device and the rear of the display panel. According to claim 1,
a rear cover on the rear of the vibration plate; and
The display device further comprising a sound absorbing member between the back cover and the back of the vibration plate. According to claim 1,
a rear cover on the rear of the vibration plate; and
A display device further comprising a support cover configured to be received in the rear cover. According to claim 15,
The support cover is,
a cover plate covering the rear of the vibration plate; and
A display device comprising a recess recessed from the cover plate and overlapping with the vibration device. According to claim 16,
The cover plate includes an opening that overlaps a portion excluding an edge portion of the vibration plate. According to claim 17,
The vibration device includes a vibration element,
A display device, wherein the opening overlaps the vibration element. According to claim 16,
The display device further comprising a sound absorbing member on the recess. According to claim 15,
The display device further comprising a sound absorbing member on a front side of the support cover. According to claim 16,
The vibration device is,
a module frame connected to the cover plate;
A bobbin connected to the vibration plate;
A magnetic member inside or outside the bobbin; and
A display device comprising a coil around the bobbin. According to claim 1,
A display device, wherein the vibration element includes a layer of piezoelectric material. The method according to any one of claims 1 to 22,
main board; and
Further comprising a circuit cable connected to the main board and the vibration device,
The display device wherein the main board includes an audio amplifier connected to the vibration device by the circuit cable. According to claim 23,
a system body configured to include the main board; and
A display device further comprising a speaker mounted on the system body. The method according to any one of claims 1 to 22,
A display device further comprising a printed circuit board connected to the display panel and configured to be connected to the vibration device. According to claim 25,
The printed circuit board is,
user connector;
an audio output connector connected to the vibration device; and
A display device comprising an audio amplifier connected to the user connector and connected to the audio output connector. According to claim 25,
Further comprising a main board connected to the printed circuit board,
The main board includes an audio processing circuit that generates an audio signal,
A display device, wherein the vibration device receives an acoustic driving signal corresponding to the acoustic signal from the printed circuit board. According to clause 27,
Further comprising an audio amplifier configured to amplify the acoustic signal to generate the acoustic driving signal,
The audio amplifier is disposed on the printed circuit board or the main board. The method according to any one of claims 1 to 22,
a printed circuit board connected to the display panel; and
A display device further comprising a high-pitched sound generating device disposed on the printed circuit board. According to clause 29,
Further comprising a front cover configured to cover the printed circuit board,
The front cover includes a plurality of sound output holes overlapping with the high-pitched sound generating device. According to clause 29,
The high-pitched sound generator includes one or more high-pitched sound generators,
The one or more high-pitched sound generators,
a metal plate on the printed circuit board; and
A display device comprising a piezoelectric element on the metal plate and comprising a layer of piezoelectric material. system body;
A display device according to any one of claims 1 to 22; and
A computing device comprising a hinge portion between the system main body and the display device. According to claim 32,
The display device further comprises a printed circuit board coupled to the display panel and configured to be coupled to the vibration device. According to claim 33,
The printed circuit board is,
user connector;
an audio output connector connected to the vibration device; and
Computing device comprising an audio amplifier connected to the user connector and connected to the audio output connector. According to claim 32,
a main board in the system body; and
Further comprising a circuit cable connected to the main board and the vibration device,
A computing device, wherein the main board includes an audio amplifier connected to the vibration device by the circuit cable. According to claim 32,
A computing device further comprising a speaker mounted on the system body. According to claim 33,
Further comprising a main board connected to the printed circuit board,
The main board includes an audio processing circuit that generates an audio signal,
Computing device, wherein the vibration device receives an acoustic drive signal corresponding to the acoustic signal from the printed circuit board. According to clause 37,
Further comprising an audio amplifier configured to amplify the acoustic signal to generate the acoustic driving signal,
The audio amplifier is disposed on the printed circuit board or the main board.

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