KR20230053561A - Display device and mobile apparatus using the same - Google Patents

Abstract

The present invention relates to a display device and a mobile device using the same, wherein a speaker and microphone are placed on a screen, and a dust-proof material is placed between the speaker and the microphone, so that a screen size is increased and a full touch screen is implemented. The display device includes: a display panel providing a screen; a cover glass disposed in the front of the display panel; a speaker disposed on the back of the display panel; a microphone disposed on the back of the display panel and spaced apart from the speaker; and a mid-frame disposed between the back of the display panel and a back cover.

Description

Display device and mobile device using the same {DISPLAY DEVICE AND MOBILE APPARATUS USING THE SAME}

The present invention relates to a display device in which a display panel is integrated with a diaphragm of a speaker and a microphone, and a mobile device using the same.

The electronic device may include a display device that reproduces a video signal and an audio output device that reproduces an audio signal. The electronic device may further include a microphone (hereinafter referred to as a “microphone”) that converts sound waves into electrical signals.

Mobile devices include mobile phones, smart phones, tablet computers, notebook computers, wearable devices, and the like. A mobile device may include a display device outputting a video signal to reproduce a multi-media signal, a speaker outputting an audio signal, and a microphone converting sound waves into electrical signals.

In a mobile device such as a smart phone, a speaker is disposed above a display panel and a microphone is disposed below the display panel to be disposed close to a user's ear and mouth. Due to the speaker and the microphone, the screen size is reduced, so a full touch screen in which images are displayed on the entire front surface of the smart phone cannot be implemented. A microphone hole is formed in the front case of the smart phone so that the microphone can be exposed to sound waves according to the user's voice. Since water penetrates through the microphone hole, it is difficult to design a waterproof smart phone.

Accordingly, the present invention provides a display device capable of increasing the screen size, realizing a full touch screen, and having an easy waterproof design, and a mobile device using the same.

The display device of the present invention includes a display panel providing a screen; a cover glass disposed on the front surface of the display panel; a speaker disposed on a rear surface of the display panel; a microphone disposed on a rear surface of the display panel and spaced apart from the speaker; and a mid frame disposed between the rear surface of the display panel and the back cover, the mid frame including a first hole and a second hole, the speaker is accommodated in the first hole, and the second hole is The microphone may be accommodated.

A mobile device of the present invention includes a display panel providing a screen; a cover glass disposed on the front surface of the display panel; a speaker disposed on a rear surface of the display panel; a microphone disposed on a rear surface of the display panel and spaced apart from the speaker; and a mid frame disposed between the rear surface of the display panel and the back cover, the mid frame including a first hole and a second hole, the speaker is accommodated in the first hole, and the second hole is The microphone may be accommodated.

According to the present invention, a speaker and a microphone are disposed on the rear surface of a display panel to increase the screen size and implement a full touch screen.

In addition, since the vibration of the display panel is directly transmitted to the microphone in the present invention, there is no microphone hole, which is advantageous for the waterproof design of the mobile device.

In addition, the present invention uses the display panel as a diaphragm for the speaker and microphone, and manufactures the mid frame and main board in a structure that avoids the speaker and microphone placement space, so that the speaker and microphone can be placed on the rear surface of the display panel without increasing the thickness of the mobile device. can be placed on

1 is a block diagram showing a mobile device according to an embodiment of the present invention.
2 is a diagram showing an example in which a speaker and a microphone are disposed on a screen of a display device.
3 is a block diagram showing a display device according to a first embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a dustproof material between display panels shown in FIG. 3 .
5 is a block diagram showing a display device according to a second exemplary embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a dustproof material adhered to the display panel shown in FIG. 5 .
7 and 8 are diagrams showing in detail the structure of a speaker and a microphone attached to a display panel.
9 and 10 are diagrams showing the structure of a mobile device according to the first embodiment of the present invention.
11 and 12 are diagrams showing the structure of a mobile device according to a second embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. It should be noted that the present invention is not limited to the embodiments disclosed below and may be implemented in various forms. The following examples are provided to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. The invention is defined by the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative, so the present invention is not limited to the details shown. Like reference numbers designate like elements throughout the specification. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

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

In interpreting the components, even if there is no separate explicit description, it is interpreted as including the error range.

In the case of a description of a positional relationship, for example, when the positional relationship of two parts is described as 'on ~', 'upon ~', '~ below', 'next to', etc., 'right' Or, unless 'directly' is used, one or more other parts may be located between the two parts.

In the description of the embodiment, first, second, etc. are used to describe various constituent elements, but these constituent elements are not limited by these terms. These terms are only used to distinguish one component from another.

Each feature of the various embodiments of the present invention can be partially or entirely combined or combined with each other, technically various interlocking and driving are possible, and each embodiment can be implemented independently of each other or together in a related relationship. may be

The display device of the present invention may be implemented based on display devices such as a liquid crystal display (LCD), a field emission display (FED), and an electroluminescence display. The electroluminescent display device according to the present invention can be classified into an inorganic light emitting display device and an organic light emitting display device according to the material of the light emitting layer.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Like reference numbers throughout the specification indicate substantially the same elements. In the following description, if it is determined that a detailed description of a known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Referring to FIGS. 1 and 2 , a mobile device 1000 according to the present invention includes a host system 300 , a display device, a speaker 10 and a microphone 20 .

The display device includes first and second screens 100A and 100B, a first screen driver 210 that drives the first screen 100A, and a second screen driver 220 that drives the second screen 100B. include The first screen driver 210 writes the pixel data of the input image received from the host system 300 into the pixels of the first screen 100A. The second screen driver 220 writes the pixel data of the input image received from the host system 300 into the pixels of the second screen 100B.

A speaker 10 and a microphone 20 are disposed on the screens 100A and 100B of the display device. The speaker 10 may be disposed on the first screen 100A and the microphone 20 may be disposed on the second screen 100B, but vice versa.

The first and second screens 100A and 100B of the display device may be implemented on the display panels shown in FIGS. 3 to 6 .

The first screen 100A and the second screen 100B constitute a full touch screen and can be operated as one screen. The mobile device may operate in a low brightness mode in which power consumption is reduced and only a part of the screen is driven in a standby state or a sleep state. The low luminance mode displays preset information on the screen by driving some pixels of a screen defined in an always on mode (AoD) or partial mode with a preset low luminance. In the low luminance mode, only one of the first and second screens 100A and 100B may be driven. When the second screen 100B is small, only the second screen 100B is driven in the low luminance mode, and power to the first screen 100A may be cut off. The screen driving units 210 and 220 of the display device drive the first and second screens 100A and 100B in a normal driving mode to display an input image on the full touch screen, and enter a standby state or sleep state. In order to reduce power consumption, only the second screen 100B can be driven.

The host system controls all functions of the mobile device. The host system 300 may be implemented as an application processor (AP). The host system 300 is connected to peripheral devices and controls input/output between peripheral devices.

The host system 300 is connected to the screen driving units 210 and 220 and the audio signal processing unit 30 . The host system 300 receives the video signal Vsig and the audio signal Asig of the input image. The host system 300 supplies an audio signal to the audio signal processing unit 30, converts the video signal Vsig into pixel data of a video signal suitable for the resolution of the screens 100A and 100B, and converts the screen driving units 210 and 220 ) to supply

The audio signal processor 30 controls the noise of the audio signal Asig received from the host system 300 and supplies it to a Digital to Analog Converter (DAC) 12, and the DAC converts the audio signal Asig, which is digital data, into an analog signal. It is converted into a signal and output to the speaker 10 to reproduce an audio signal. The microphone signal output by the microphone 20 is converted into digital data through an analog to digital converter (ADC) 22 and supplied to the audio signal processing unit 30 . The audio signal processing unit 30 removes noise from the signal received from the ADC 22 and transmits it to the host system.

The diaphragm of the speaker 10 and the diaphragm of the microphone 20 may be disposed close to each other. Also, the speaker 10 and the microphone 20 may share a diaphragm. The diaphragm of the speaker 10 and the diaphragm of the microphone 20 may be integrated with the display panel of the display device shown in FIGS. 3 to 6 . When the diaphragms of the speaker 10 and the microphone 20 are placed close together or the speaker 10 and the microphone 20 share a single diaphragm, the signal of the speaker 10 and the signal of the microphone 20 may interfere with each other. there is.

The audio signal processing unit 30 includes a noise removal filter. The noise removal filter may remove unwanted noise by comparing an audio signal to be output to the speaker 10 and a microphone signal received from the microphone 20 . The noise removal filter may remove noise added to the microphone signal due to vibration of the speaker 10 by using a signal strength or frequency filtering method. Conversely, the noise removal filter may remove noise added to an audio signal to be output through the speaker 10 due to the vibration of the microphone 20 .

The host system 300 is connected to a sensor unit, an input unit, a communication unit, an interface unit, a memory unit, and a power supply unit. The sensor unit includes a touch sensor, an image sensor, a heart rate sensor, a proximity sensor, an illumination sensor, an acceleration sensor, a magnetic sensor, and a gravity sensor disposed on the screens 100A and 100B. (G-sensor), gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), finger scan sensor, ultrasonic sensor, and biometric sensors (fingerprint sensor, iris recognition sensor). The image sensor may include a camera.

The input unit is a microphone (20). a touch sensor, and a keypad; and the like. The communication unit may include at least one or more of a broadcast reception module, a mobile communication module, a wireless Internet module, a short-distance communication module, and a location information module. The output unit may include a display device, a sound output module, a haptic module, and an optical output module.

The interface unit provides an interface between the host system 300 and an external device. The interface unit includes a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port for connecting a device equipped with an identification module, and an audio I/O (Input/Output) port. , a video I/O port, and an earphone port.

The memory may store preset data and commands to control the overall operation of an application program, mobile device, or wearable device. At least some of the application programs are downloaded from an external server through wireless communication. In addition, programs that execute at least basic functions among applications are basically stored in memory at the time of shipment of the mobile device or wearable device, such as incoming call, outgoing function, message reception, and outgoing It may be a function or the like, but is not limited thereto.

The power supply unit receives external power and internal power to generate power necessary for driving the mobile device. The power supply includes a battery.

3 is a block diagram showing a display device according to a first embodiment of the present invention. FIG. 4 is a cross-sectional view showing a dustproof material between the display panels 110 and 120 shown in FIG. 3 .

3 and 4, the display device of the present invention includes a first display panel 110, a first screen driver 210, a second display panel 120, a second screen driver 220, and a timing controller. (200).

The first and second display panels 110 and 120 are physically separated. Each of the first and second display panels 110 and 120 includes a pixel array on which pixel data of an input image is displayed.

The first screen 100A is implemented on the pixel array of the first display panel 110 . The second screen 100B is implemented on the pixel array of the second display panel 120 . The first screen 100A may be a large screen that displays an input image in a normal driving mode and is not driven in a standby or sleep state. The second screen 100B may be disposed below the first screen 100A and operate in a low brightness mode in a standby or sleep state to display preset information.

Each of the pixel arrays of the first and second screens 100A and 100B includes data lines and gate lines (or scan lines) crossing the data lines, and is formed by the data lines and the gate lines. It includes pixels 101 arranged in definable pixel areas. The pixels 101 may be arranged in a matrix form.

The first and second display panels 120 and 120 use a self-light emitting device such as an organic light emitting diode (OLED) to display an image without a backlight unit (BLU). It can be implemented as a display panel of a display device (Electroluminescence Display). Electroluminescence display devices can be classified into inorganic light emitting display devices and organic light emitting display devices according to the material of the light emitting layer. Organic light emitting display devices are OLED (Organic Light Emitting Diode, OLED") is formed in each of the pixels. The organic light emitting display device has a fast response speed, excellent luminous efficiency, luminance, viewing angle, etc., and excellent contrast ratio and color gamut because it can express a black gradation as complete black. The inorganic light emitting display device may include a quantum dot display device or a micro light emitting diode display device, but is not limited thereto.

A speaker 10 may be disposed on the rear surface of the first display panel 110 . The first display panel 110 is integrated with the diaphragm of the speaker 10 . A microphone 20 may be disposed on the rear surface of the second display panel 120 . The second display panel 120 is integrated with the diaphragm of the microphone 20 .

The microphone 20 should be placed on the second display panel 120 close to the user's mouth to be advantageous in transmitting voice information. Since the screen of the first display panel 110 is large, when the first display panel 100 is used as a diaphragm of the speaker 10, an audio signal can be output at a relatively high volume. Accordingly, the speaker 10 is disposed on the first screen 100A close to the user's ear in the mobile device. A microphone 20 is disposed on the second screen 100B close to the user's mouth.

An anti-vibration material 141 that absorbs or blocks vibration is disposed between the first display panel 110 and the second display panel 120 . The anti-vibration material 141 may be used as anti-vibration material having a anti-vibration effect, such as resin, natural/artificial rubber, foam pad, silicon pad, and adhesive tape. In addition, the anti-vibration material 141 may block sound interference between the first display panel 110 and the second display panel 120 . The anti-vibration material 141 may be expressed as an enclosure or a baffle, but is not limited thereto.

As in the example of FIG. 4 , the first display panel 110 and the second display panel 120 may be bonded to a cover glass 130 to form one flat surface. Front surfaces of the display panels 110 and 120 are bonded to the cover glass 130 with an adhesive 140 . The adhesive 140 may be any one of optically clear adhesive (OCA) and optically clear resin (OCR) having high transparency, but is not limited thereto. OCA and OCR have an anti-vibration effect that absorbs vibration. In the example of FIG. 4 , the anti-vibration resin 141 is filled between the opposite side surfaces of the first display panel 110 and the second display panel 120 . Due to the anti-vibration resin 141 , vibration of the speaker 10 is not propagated to the second display panel 120 and vibration of the microphone 20 is not propagated to the first display panel 110 . The anti-vibration resin 141 may be OCA, but is not limited thereto.

In-cell type, on-cell type, or add-on type touch sensors are disposed in the pixel array of the display panels 110 and 120 to implement a full touch screen. can

The first screen driver 210 applies a data driver 112 for supplying data voltages to data lines of the first screen 100A and gate pulses (or scan pulses) to gate lines of the first screen 100A. and a gate driver 114 for sequentially supplying. The second screen driver 220 applies a gate pulse (or scan pulse) to the data driver 122 for supplying data voltages to the data lines of the second screen 100B and gate lines of the second screen 100B. and a gate driver 124 for sequentially supplying.

The timing controller 200 transmits the pixel data of the input image received from the host system 300 to the first and second data drivers 112 and 122 . The timing controller 200 controls operation timings of the first screen driver 210 and the second screen driver 220 using a timing signal synchronized with pixel data of an input image and received from the host system 300 .

5 is a block diagram showing a display device according to a second embodiment of the present invention. FIG. 6 is a cross-sectional view showing a dustproof material adhered to the display panel 100 shown in FIG. 5 .

5 and 6 , the display device of the present invention includes a display panel 100, a first screen driving unit 210, a second screen driving unit 220, and a timing controller 201.

The display panel 100 may be implemented as a display panel of an electroluminescent display device. The display panel 100 includes a pixel array on which pixel data of an input image is displayed. The first screen 100A and the second screen 100B are separated from each other on the pixel array of the display panel 100 . The pixel array includes data lines and gate lines (or scan lines) intersecting the data lines, and pixels 101 disposed in pixel regions that may be defined by the data lines and the gate lines. ). The pixels 101 may be arranged in a matrix form.

The first screen 100A is a large screen that displays an input image in a normal driving state and is not driven in a standby state or sleep state. The second screen 100B is disposed below the first screen 100A and operates in a low brightness mode in a standby or sleep state to display preset information.

The speaker 10 and the microphone 20 are bonded to the rear surface of the display panel 100 so that the display panel 100 serves as a diaphragm for the speaker 10 and the microphone 20 . In the mobile device, a speaker 10 is disposed on the first screen 100A close to the user's ear. A microphone 20 is disposed on the second screen 100B close to the user's mouth.

The display panel 100 is integrated with the speaker 10 and the diaphragm of the microphone 20 . Since the diaphragms of the speaker 10 and the microphone 20 are shared, when the speaker 10 and the microphone 20 vibrate at the same time, mutual interference occurs. In order to isolate vibration propagation or sound between the speaker 10 and the microphone 20, as shown in FIG. 6, a vibration-proof material is placed on the rear surface of the display panel 100 at a position between the speaker 10 and the microphone 20. (142) can be arranged.

A full touch screen may be realized by disposing touch sensors in a pixel array of the display panel 100 in an in-cell type, an on-cell type, or an add-on type.

The first screen driver 210 applies a data driver 113 for supplying data voltages to data lines of the first screen 100A and gate pulses (or scan pulses) to gate lines of the first screen 100A. and a gate driver 115 for sequentially supplying. The second screen driver 220 applies a gate pulse (or scan pulse) to the data driver 123 for supplying data voltages to the data lines of the second screen 100B and gate lines of the second screen 100B. and a gate driver 125 for sequentially supplying. When connected to the data lines between the first screen 100A and the second screen 100B, one of the two data drivers 113 and 123 transmits the data of the first screen driver 210 and the second screen driver 210. Lines can be driven.

The timing controller 201 transmits pixel data of an input image received from the host system 300 to the data drivers 113 and 123 . The timing controller 201 controls operation timings of the first screen driver 210 and the second screen driver 220 using a timing signal synchronized with pixel data of an input image and received from the host system 300 .

The speaker 10 and the microphone 20 may be implemented in a dynamic method using a voice coil or a piezoelectric method using a piezoelectric element. The dynamic method can reproduce signals in various sound ranges from high to low tones, is advantageous to mobile devices because it can be driven without a separate power supply, and has the advantage of not changing characteristics in response to changes in the external environment. In addition, the dynamic method has a low production cost and excellent durability compared to the piezoelectric method. The piezoelectric type may be implemented with a film-type speaker and a film-type microphone. 7 and 8 illustrate structures of the speaker 10 and the microphone 20 implemented in a dynamic manner, but the present invention is not limited thereto.

7 and 8 are diagrams showing the structure 10 of the speaker 10 and the microphone 20 attached to the display panels 100, 110, and 120 in detail. If both the speaker 10 and the microphone 20 are implemented in a dynamic manner, the structure of the speaker 10 and the microphone 20 is substantially the same as shown in FIG. 8 .

Referring to FIGS. 7 and 8 , the speaker 10 and the microphone 20 have substantially the same structure. Each of the speaker 10 and the microphone 20 includes a bobbin 72 on which a voice coil 71 is wound, and plates 74 and 75 on which a permanent magnet 76 is fastened.

The bobbin 72 is attached to the rear surfaces of the display panels 100, 110, and 120 with an adhesive or double-sided adhesive tape. The plates 74 and 75 are divided into a top plate 74 and a bottom plate 75 separated by the permanent magnet 76 therebetween. The bottom plate 75 includes a center pole 73 inserted into the bobbin 71.

In the speaker 10, when the current of the analog audio signal input to the DAC 12 and the amplifier flows through the voice coil 71, the permanent magnet 76 is moved by a force generated according to Fleming's left hand rule. The plates 74 and 75, the bobbin 72, and the display panels 100, 110, and 120 move in conjunction with the permanent magnet 76. The display panels 100, 110, and 120 vibrate with the diaphragm of the speaker 10 to generate sound waves or sounds.

In the case of the microphone 20, the display panels 100, 110, and 120 vibrate according to sound waves, and the permanent magnet 76 vibrates in conjunction with the display panels 100, 110, and 120 to generate voice according to Fleming's right-hand rule. Current flows through the coil 71 and is converted into an electrical signal. The microphone signal generated by the current flowing through the voice coil 71 is converted into digital data through the amplifier and the ADC 22.

9 and 10 are exploded perspective views showing the structure of a mobile device according to a first embodiment of the present invention. 9 is an exploded perspective view showing components of a mobile device. FIG. 10 is a cross-sectional view of a mobile device in which components shown in FIG. 9 are assembled. In this embodiment, the display device has the display panels 110 and 120 separated between the speaker 10 and the microphone 20 so that the diaphragms of the speaker 10 and the microphone 20 are separated, as shown in FIGS. 3 and 4. have a structure

9 and 10, the mobile device of the present invention includes display panels 110 and 120, a cover glass 130, a mid frame 132, and a main board of a display device. , 134), a mid frame cover (136), a battery (138), and a back cover (131).

The cover glass 130 may be implemented with tempered glass. Front surfaces of the display panels 110 and 120 are bonded to the cover glass 130 with an adhesive 140 as a medium.

In the space between the cover glass 130 and the back cover 131, the display panels 110 and 120 of the display device, the mid frame 132, the main board 134, the mid frame cover 136, and the battery 105 etc. are stacked.

A speaker 10 is disposed on the rear surface of the first display panel 110 so as to be located on top of the mobile device. The microphone 20 is disposed on the rear surface of the second display panel 120 so as to be located at the bottom of the mobile device. Front surfaces of the display panels 110 and 120 are bonded to the cover glass 130 with an adhesive 140 as a medium. The anti-vibration material 141 is disposed on the opposite side of the display panels 110 and 120 .

The mid frame 132 and the mid frame cover 136 support the display panels 110 and 120 and the main board 134 . The mid frame 132 supports the display panels 110 and 120 , and the mid frame cover 136 supports the main board 134 . The display panels 110 and 120 and the main board 134 are spatially separated with the mid frame 132 therebetween.

A drive IC for driving the display panels 110 and 120 is connected to the main board 134 through a flexible circuit board (FPCB). The drive IC drives the display panels 110 and 120 by including the screen driving units 210 and 220, the timing controllers 200 and 201, and a power circuit not shown. Main board 134 includes host system 300 . The camera 40, various sensors, and peripheral devices are connected to the main board 134.

When the components shown in FIG. 9 are assembled, the thickness t of the mobile device may be about 7-9 mm. The speaker 10 and the microphone 20 may be disposed on the display panels 110 and 120 without increasing the thickness of the mobile device. To this end, the mid frame 132 and the main board 134 disposed between the display panels 110 and 120 and the mid frame cover 136 should be designed not to interfere with the speaker 10 and the microphone 20. . For example, the mid frame 132 includes a hole 132a as a speaker placement space and a hole 132b as a microphone placement space. For example, hole 132a can accommodate a speaker and hole 132b can accommodate a microphone.

The main board 134 may be manufactured in an L-shaped structure so that the microphone avoids the accommodation space. The main board 134 includes a hole 134a that is a speaker accommodating space. The speaker 10 may be accommodated in holes 132a and 134a formed in the mid frame 132 and the main board 134 . The microphone 20 may be accommodated in a hole 132b formed in the mid frame 132 . The mid frame 132 and the main board 134 may include holes 132c and 134c that are camera arrangement spaces.

11 and 12 are exploded perspective views showing the structure of a mobile device according to a second embodiment of the present invention. 11 is an exploded perspective view showing components of a mobile device. FIG. 12 is a cross-sectional view of a mobile device in which components shown in FIG. 11 are assembled. In this embodiment, the display device has a structure in which the speaker 10 and the diaphragm of the microphone 20 are implemented as one display panel 100 as shown in FIGS. 5 and 6 .

11 and 12, the mobile device of the present invention includes a display panel 100, a cover glass 130, a mid frame 132, a main board 134, a mid frame cover 136, and a battery 138. , and a back cover 131.

The front surface of the display panel 100 is bonded to the cover glass 130 with an adhesive 140 as a medium. The speaker 10 is disposed on the top of the display panel 100 and the microphone 20 is disposed on the bottom of the display panel 100 . A dustproof material 142 may be disposed on the rear surface of the display panel 100 between the speaker 10 and the microphone 20 .

The speaker 10 and the microphone 20 may be disposed on the display panel 100 without increasing the thickness of the mobile device. To this end, the mid frame 132 and the main board 134 disposed between the display panel 100 and the mid frame cover 136 should be designed not to interfere with the speaker 10 and the microphone 20 . For example, the mid frame 132 includes a hole 132a as a speaker placement space and a hole 132b as a microphone placement space.

The main board 134 is made in an L shape avoiding the microphone 20. The main board 134 includes a hole 134a as a speaker placement space. The speaker 10 is disposed in a space defined by holes 132a and 134a formed in the mid frame 132 and the main board 134 . The microphone 20 is disposed in a space defined by a hole 132b formed in the mid frame 132 . The mid frame 132 and the main board 134 include holes 132c and 134c defining a camera arrangement space.

In addition, the display device according to the embodiment of the present invention is a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, and a rollable device. (rollable device), bendable device, flexible device, curved device, electronic notebook, e-book, portable multimedia player (PMP), personal digital assistant (PDA), MP3 player , mobile medical device, desktop PC, laptop PC, netbook computer, workstation, navigation, vehicle navigation, vehicle display, television, wallpaper device, Shiny It can be applied to signage devices, game devices, notebooks, monitors, cameras, camcorders, and home appliances. And, the display device of the present invention can be applied to an organic light emitting lighting device or an inorganic light emitting lighting device. When the sound generating device is applied to a lighting device, it may serve as a light and a speaker.

A display device according to an embodiment of the present invention can be described as follows.

The display device of the present invention includes a speaker disposed on a first screen, a microphone disposed on a second screen, a dust-proof material disposed between the speaker and the microphone, and a device for writing pixel data of an input image into pixels of the first screen. It includes a first screen driving unit and a second screen driving unit that writes pixel data of an input image into pixels of a second screen.

According to some embodiments of the present invention, a digital-to-analog converter connected to a speaker, an analog-to-digital converter connected to a microphone, and an audio signal received from a host system are transmitted to the digital-to-analog converter, and a microphone signal from the analog-to-digital converter is transmitted to the host system. It may include an audio signal processing unit to be transmitted, and the audio signal processing unit may remove noise from the audio signal and the microphone signal using a noise removal filter.

According to some embodiments of the present invention, it may further include a first display panel on which a pixel array of a first screen is disposed, and a second display panel on which a pixel array of a second screen is disposed, wherein the dustproof material is used to display the first display panel. It may be disposed between the side of the panel and the side of the second display panel.

According to some embodiments of the present invention, a display panel on which the pixel array of the first screen and the pixel array of the second screen are disposed may further be included, and the anti-vibration material may be disposed on the display panel between the speaker and the microphone. .

A mobile device of the present invention includes a first display panel providing a first screen, a second display panel providing a second screen, a cover glass disposed on front surfaces of the display panels, a speaker disposed on a rear surface of the first display panel, A microphone disposed on a rear surface of the second display panel, and a dustproof material disposed between the first display panel and the second display panel.

According to some embodiments of the present invention, a mid frame disposed between the rear surface of the display panels and the back cover, a main board disposed between the mid frame and the back cover, a mid frame cover disposed between the main board and the back cover, and a mid frame disposed between the back cover and the mid frame. It may further include a battery disposed between the frame and the back cover, and the mid frame may include a first hole accommodating a speaker and a second hole accommodating a microphone.

According to some embodiments of the present invention, the main board may include a hole accommodating a speaker while avoiding a space accommodating a microphone.

According to some embodiments of the present invention, a screen driving unit capable of driving the first and second screens in a normal driving mode and driving only the second screen in a standby state or a sleep state may be further included.

A mobile device according to another embodiment of the present invention includes a first display panel providing a first screen and a second screen, a cover glass disposed on the front surface of the display panel, a speaker disposed on the rear surface of the display panel, and a rear surface of the display panel. and a microphone disposed on the upper surface, and a dustproof material disposed on a rear surface of the display panel between the speaker and the microphone.

According to some embodiments of the present invention, a mid frame disposed between the rear surface of the display panels and the back cover, a main board disposed between the mid frame and the back cover, a mid frame cover disposed between the main board and the back cover, and a mid frame disposed between the back cover and the mid frame. A battery may be disposed between the frame and the back cover, and the mid frame may include a first hole accommodating a speaker and a second hole accommodating a microphone.

According to some embodiments of the present invention, the main board may include a hole for accommodating a speaker while avoiding a space for accommodating a microphone.

According to some embodiments of the present invention, a screen driving unit capable of driving the first and second screens in a normal driving mode and driving only the second screen in a standby state or a sleep state may be further included.

Through the above description, those skilled in the art will know that various changes and modifications are possible without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be determined by the claims.

10: speaker 12: DAC
20: microphone 22: ADC
30: audio signal processing unit 100A: first screen
100B: second screen 100, 110, 120: display panel
112, 122, 113, 123: data driving unit
114, 115, 124, 125: gate driver
200, 201: timing controller 130: cover glass
131: back cover 132: mid frame
134: main board 136: mid frame cover
138: battery 140: adhesive
141, 142: anti-vibration material 210: first screen driving unit
220: second screen driving unit 300: host system
1000: mobile device

Claims (8)

a display panel providing a screen;
a cover glass disposed on the front surface of the display panel;
a speaker disposed on a rear surface of the display panel;
a microphone disposed on a rear surface of the display panel and spaced apart from the speaker; and
A mid frame disposed between a rear surface of the display panel and a back cover;
The mid frame includes a first hole and a second hole,
The display device of claim 1 , wherein the speaker is accommodated in the first hole, and the microphone is accommodated in the second hole. According to claim 1,
a main board disposed between the mid frame and the back cover; and
The display device further comprises a mid frame cover disposed between the main board and the back cover. According to claim 1,
The display device of claim 1 , wherein the main board includes a third hole accommodating the speaker together with the first hole. According to claim 3,
The display device of claim 1 , wherein the main board is formed in a shape that does not overlap a space in which the microphone is accommodated. According to claim 1,
The display panel includes a first display panel providing a first screen and a second display panel displaying a second screen,
The speaker is disposed on a rear surface of the first display panel,
The display device, wherein the microphone is disposed on a rear surface of the second display panel. According to claim 1,
Each of the speaker and the microphone,
a bobbin attached to a rear surface of the display panel and around which a voice coil is wound; and
A display device comprising a plate fastened with a permanent magnet interlocking with the voice coil. According to claim 1,
The display device of claim 1 , wherein the cover glass is bonded to the front surface of the display panel with an adhesive. A mobile device comprising the display device according to any one of claims 1 to 7.

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