KR102663412B1 - 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. By arranging a speaker and a microphone on the screen and placing a dustproof material between the speaker and the microphone, the screen size can be increased and a full touch screen can be implemented.

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 the diaphragm of a speaker and a microphone, and a mobile device using the same.

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

Mobile devices include mobile phones, smartphones, tablet computers, laptop computers, wearable devices, etc. A mobile device may include a display device that outputs a video signal to reproduce a multi-media signal, a speaker that outputs an audio signal, and a microphone that converts sound waves into electrical signals.

In mobile devices such as smart phones, a speaker is placed above the display panel so that it is located close to the user's ears and mouth, and a microphone is placed below the display panel. Due to these speakers and microphones, the screen size becomes smaller, making it impossible to implement a full touch screen that displays images on the entire front of the smartphone. A microphone hole is formed on the front case of the smartphone so that the microphone is exposed to sound waves resulting from the user's voice. Water penetrates through this microphone hole, making it difficult to design a smartphone to be waterproof.

Therefore, the present invention provides a display device that can increase the screen size and implement a full touch screen, and is easily waterproof, 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 in 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 a back surface of the display panel and a back cover, wherein the mid-frame includes a first hole and a second hole, wherein the speaker is accommodated in the first hole, and in the second hole. The microphone can be accommodated.

The mobile device of the present invention includes a display panel providing a screen; a cover glass disposed in 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 a back surface of the display panel and a back cover, wherein the mid-frame includes a first hole and a second hole, wherein the speaker is accommodated in the first hole, and in the second hole. The microphone can be accommodated.

The present invention can increase the screen size and implement a full touch screen by placing a speaker and microphone on the back of the display panel.

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

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 space for placing the speaker and microphone, so that the speaker and microphone can be placed on the back of the display panel without increasing the thickness of the mobile device. It can be placed in .

1 is a block diagram showing a mobile device according to an embodiment of the present invention.
Figure 2 is a diagram showing an example of a speaker and microphone arranged on the screen of a display device.
Figure 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 dust-proof material between the display panels shown in FIG. 3.
Figure 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 dust-proof material attached to the display panel shown in FIG. 5.
Figures 7 and 8 are diagrams showing in detail the structure of the speaker and microphone glued on the 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.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along 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 make the disclosure of the present invention complete 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, proportions, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

When 'includes', 'has', 'consists of', etc. mentioned in the specification are used, other parts may be added unless '~ only' is used. When 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 between two parts is described as 'on top', 'on top', 'at the bottom', 'next to ~', 'right next to' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

In the description of the embodiments, first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are merely used to distinguish one component from another.

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

The display device of the present invention can 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 of the present invention can be divided into an inorganic light emitting display device and an organic light emitting display device depending on the material of the light emitting layer.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. Like reference numerals refer to substantially the same elements throughout the specification. 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 gist of the present invention, the detailed description will be omitted.

1 and 2, the mobile device 1000 of 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. Includes. The first screen driver 210 writes pixel data of the input image received from the host system 300 into pixels of the first screen 100A. The second screen driver 220 writes pixel data of the input image received from the host system 300 into 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 placed on the first screen 100A, and the microphone 20 may be placed on the second screen 100B, or vice versa.

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

The first screen 100A and the second screen 100B can form a full touch screen and operate as one screen. Mobile devices can operate in a low-brightness mode in a standby or sleep state, reducing power consumption and driving only a portion of the screen. The low brightness mode displays preset information on the screen by driving some pixels of the screen defined in Always on mode (AoD) or Partial Mode at a preset low brightness. In low brightness mode, only one of the first and second screens 100A and 100B can be driven. When the second screen 100B is small, only the second screen 100B may be driven in the low brightness mode and the power of the first screen 100A may be turned off. The screen drivers 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 a full touch screen and are in a standby or sleep state. To reduce power consumption, only the second screen 100B can be driven.

The host system controls the entire functionality 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 drivers 210 and 220 and the audio signal processor 30. The host system 300 receives a video signal (Vsig) and an audio signal (Asig) of an 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 an image signal suitable for the resolution of the screens 100A and 100B, and displays the screen drivers 210 and 220. ) is supplied to.

The audio signal processing unit 30 controls the noise of the audio signal (Asig) received from the host system 300 and supplies it to the DAC (Digital to Analog Converter, 12), and the DAC converts the audio signal (Asig), which is digital data, into analog. It is converted into a signal and output to the speaker 10 to reproduce the audio signal. The microphone signal output by the microphone 20 is converted into digital data through an ADC (Analog to Digital Converter, 22) and supplied to the audio signal processor 30. The audio signal processor 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 placed close to each other. Additionally, 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. If the diaphragms of the speaker 10 and the microphone 20 are placed close together or the speaker 10 and the microphone 20 share one diaphragm, the signal from the speaker 10 and the signal from 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 can remove unwanted noise by comparing the audio signal to be output to the speaker 10 and the microphone signal received from the microphone 20. The noise removal filter can remove noise added to the microphone signal due to the vibration of the speaker 10 by using signal strength or frequency filtering. On the contrary, the noise removal filter can remove noise added to the audio signal to be output to 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, and a power supply unit. The sensor unit includes a touch sensor, image sensor, heart rate sensor, proximity sensor, illumination sensor, acceleration sensor, magnetic sensor, and gravity sensor arranged on the screens 100A and 100B. (G-sensor), gyroscope sensor, motion sensor, RGB sensor, infrared sensor, fingerprint scan sensor, ultrasonic sensor, and biometric sensors (fingerprint sensors, iris recognition sensors). The image sensor may include a camera.

The input unit is a microphone (20). Includes a touch sensor, a keypad, etc. The communication unit may include at least one of a broadcast reception module, a mobile communication module, a wireless Internet module, a short-range communication module, and a location information module. The output unit may include a display device, an audio output module, a haptip module, and an optical output module.

The interface unit provides an interface between the host system 300 and external devices. 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 or application, a mobile device, or a wearable device. At least some of the application programs can be downloaded from an external server through wireless communication. In addition, a program that executes at least basic functions among the applications is stored in memory by default at the time of shipment of the mobile device or wearable device, such as incoming and outgoing calls, receiving and sending messages. It may be a function, etc., but is not limited thereto.

The power supply unit receives external and internal power and generates the power necessary to operate the mobile device. The power supply unit includes a battery.

Figure 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 the dust-proof 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) is provided.

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 does not drive in a standby 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.

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

The first and second display panels 120 and 120 use self-luminous devices such as OLED (Organic Light Emitting Diode, OLED) to display images without a backlight unit (BLU). Electroluminescence displays can be implemented as display panels and can be divided into inorganic light emitting display devices and organic light emitting display devices (OLED) depending on the material of the light emitting layer. “Diode, OLED”) is formed in each pixel. Organic light emitting display devices not only have a fast response speed and excellent luminous efficiency, brightness, and viewing angle, but also have excellent contrast ratio and color gamut because they can express black gradations in complete black. The inorganic light emitting display device may include, but is not limited to, a quantum dot display device or a micro light emitting diode display device.

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

It is advantageous to transmit voice information when the microphone 20 is placed on the second display panel 120 close to the user's mouth. 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, in the mobile device, the speaker 10 is placed on the first screen 100A close to the user's ears. The microphone 20 is placed 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 dustproof material 141 may be a dustproof material with a dustproof effect, such as resin, natural/artificial rubber, foam pad, silicone pad, and adhesive tape. Additionally, the vibration-proof material 141 can block sound interference between the first display panel 110 and the second display panel 120. The dust-proof material 141 may be expressed as an enclosure or a baffle, but is not limited to these terms.

The first display panel 110 and the second display panel 120 may be adhered to a cover glass 130 as in the example of FIG. 4 to form one plane. The front surfaces of the display panels 110 and 120 are adhered to the cover glass 130 with an adhesive 140. The adhesive 140 may be either OCA (Optically Clear Adhesive) or OCR (Optically Clear Resin), which have 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 vibration-proof resin 141 is filled between the side surfaces of the first display panel 110 and the second display panel 120 that face each other. Due to the anti-vibration resin 141, the vibration of the speaker 10 does not propagate to the second display panel 120 and the vibration of the microphone 20 does not propagate to the first display panel 110. The dustproof resin 141 may be OCA, but is not limited thereto.

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

The first screen driver 210 includes a data driver 112 for supplying a data voltage to the data lines of the first screen 100A and a gate pulse (or scan pulse) to the gate lines of the first screen 100A. It includes a gate driver 114 that sequentially supplies power. The second screen driver 220 is a data driver 122 for supplying a data voltage to the data lines of the second screen 100B and provides a gate pulse (or scan pulse) to the gate lines of the second screen 100B. It includes a gate driver 124 that supplies power sequentially.

The timing controller 200 transmits 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 the operation timing of the first screen driver 210 and the second screen driver 220 using a timing signal received from the host system 300 in synchronization with the pixel data of the input image.

Figure 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 dust-proof material adhered to the display panel 100 shown in FIG. 5.

Referring to Figures 5 and 6, the display device of the present invention includes a display panel 100, a first screen driver 210, a second screen driver 220, and a timing controller 201.

The display panel 100 may be implemented as a display panel of an electroluminescence 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 on the pixel array of the display panel 100. The pixel array includes data lines, gate lines (or scan lines) that intersect the data lines, and pixels (101) arranged in pixel areas that can be defined by the data lines and gate lines. ) includes. 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 does not drive in a standby 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 attached to the back of the display panel 100, so that the display panel 100 also serves as a diaphragm for the speaker 10 and the microphone 20. In a mobile device, a speaker 10 is disposed on the first screen 100A close to the user's ears. The microphone 20 is placed on the second screen 100B close to the user's mouth.

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

A full touch screen can be implemented by placing touch sensors in the pixel array of the display panel 100 in an in-cell type, on-cell type, or add-on type.

The first screen driver 210 includes a data driver 113 for supplying a data voltage to the data lines of the first screen 100A and a gate pulse (or scan pulse) to the gate lines of the first screen 100A. It includes a gate driver 115 that supplies power sequentially. The second screen driver 220 includes a data driver 123 for supplying a data voltage to the data lines of the second screen 100B and a gate pulse (or scan pulse) to the gate lines of the second screen 100B. It includes a gate driver 125 that supplies power sequentially. When connected to the data lines between the first screen 100A and the second screen 100B, data of the first screen driver 210 and the second screen driver 210 are transmitted to one of the two data drivers 113 and 123. Lines can be driven.

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

The speaker 10 and the microphone 20 may be implemented using a dynamic method using a voice coil or a piezoelectric method using a piezoelectric element. The dynamic method can reproduce signals in a variety of sound ranges from high to low sounds, can be operated without a separate power supply, which is advantageous for mobile devices, and has the advantage that its characteristics do not change due to changes in the external environment. In addition, the dynamic method has a lower production cost and is superior in durability compared to the piezoelectric method. The piezoelectric method can be implemented as a film-type speaker and a film-type microphone. 7 and 8 illustrate the structures of the speaker 10 and the microphone 20 implemented in a dynamic manner, but the present invention is not limited thereto.

FIGS. 7 and 8 are diagrams showing in detail the structure 10 of the speaker 10 and the microphone 20 glued on the display panel 100, 110, and 120. If both the speaker 10 and the microphone 20 are implemented in a dynamic manner, the structures of the speaker 10 and the microphone 20 are substantially the same as shown in FIG. 8.

Referring to Figures 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 back of the display panel 100, 110, and 120 with 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 a permanent magnet 76 in between. 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 moves by the 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 panel 100, 110, and 120 vibrates according to the sound wave, and the permanent magnet 76 vibrates in conjunction with the display panel 100, 110, and 120, thereby generating the 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 an amplifier and ADC 22.

9 and 10 are exploded perspective views showing the structure of a mobile device according to the first embodiment of the present invention. Figure 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 the components shown in FIG. 9 are assembled. In this embodiment, the display device has 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. It has 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 the display device. , 134), a mid frame cover (136), a battery (138), and a back cover (131).

The cover glass 130 may be implemented as tempered glass. The front surfaces of the display panels 110 and 120 are adhered to the cover glass 130 using an adhesive 140.

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

A speaker 10 is disposed on the back of the first display panel 110 to be located at the top of the mobile device. The microphone 20 is disposed on the back of the second display panel 120 to be located at the bottom of the mobile device. The front surfaces of the display panels 110 and 120 are adhered to the cover glass 130 using an adhesive 140. A dustproof material 141 is disposed on the side where the display panels 110 and 120 face each other.

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 in between.

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, including screen drivers 210 and 220, timing controllers 200 and 201, and a power circuit (not shown). The main board 134 includes a host system 300. A 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 microphone 20 can be placed 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 must be designed so as not to interfere with the speaker 10 and microphone 20. . As an example, the mid frame 132 includes a hole 132a that is a speaker placement space and a hole 132b that is a microphone placement space. For example, the hole 132a can accommodate a speaker, and the hole 132b can accommodate a microphone.

The main board 134 may be manufactured in an L-shaped structure to avoid the microphone accommodation space. The main board 134 includes a hole 134a that is a speaker accommodation space. The speaker 10 can be accommodated in the holes 132a and 134a formed in the mid frame 132 and the main board 134. The microphone 20 may be accommodated in the hole 132b formed in the mid frame 132. The mid frame 132 and the main board 134 may include holes 132c and 134c, which are camera placement spaces.

11 and 12 are exploded perspective views showing the structure of a mobile device according to a second embodiment of the present invention. Figure 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 the components shown in FIG. 11 are assembled. In this embodiment, the display device has a structure in which the diaphragm of the speaker 10 and the microphone 20 are implemented as a single 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 of the display panel 100 is adhered to the cover glass 130 using an adhesive 140. The speaker 10 is placed at the top of the display panel 100, and the microphone 20 is placed at the bottom of the display panel 100. A dustproof material 142 may be disposed on the back of the display panel 100 between the speaker 10 and the microphone 20.

The speaker 10 and microphone 20 can be placed 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 must be designed so as not to interfere with the speaker 10 and the microphone 20. As an example, the mid frame 132 includes a hole 132a, which is a speaker placement space, and a hole 132b, which is a microphone placement space.

The main board 134 is manufactured in an L shape to avoid the microphone 20. The main board 134 includes a hole 134a, which is a space for placing speakers. The speaker 10 is placed in a space defined by the mid frame 132 and the holes 132a and 134a formed in the main board 134. The microphone 20 is placed in a space defined by the hole 132b formed in the mid frame 132. The mid frame 132 and the main board 134 include holes 132c and 134c that define a camera placement 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, PMP (portable multimedia player), PDA (personal digital assistant), MP3 player , mobile medical devices, desktop PC, laptop PC, netbook computer, workstation, navigation, vehicle navigation, vehicle display device, television, wallpaper device, Shiny It can be applied to signage devices, gaming devices, laptops, monitors, cameras, camcorders, and home appliances. Additionally, 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 a sound generator is applied to a lighting device, it can function as a light and 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 dustproof 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 driver and a second screen driver that writes pixel data of the input image to pixels of the 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 a transmitting audio signal processing unit, 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, the method may further include a first display panel on which a pixel array of a first screen is arranged, and a second display panel on which a pixel array of a second screen is arranged, and the dust-proof material may be used for 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, the display may further include a display panel on which a pixel array of a first screen and a pixel array of a second screen are disposed, and a dustproof material may be disposed on the display panel between the speaker and the microphone. .

The 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 the front of the display panels, a speaker disposed on the back of the first display panel, It includes a microphone disposed on the back 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 back 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 back cover of the display panels. It may further include a battery disposed between the frame and the back cover, and the mid-frame may include a first hole for accommodating a speaker and a second hole for accommodating a microphone.

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

According to some embodiments of the present invention, the screen driver may drive the first and second screens in a normal drive mode, and may further include a screen driver that drives only the second screen in a standby state or a sleep state.

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

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

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

According to some embodiments of the present invention, the screen driver may drive the first and second screens in a normal drive mode, and may further include a screen driver that drives only the second screen in a standby state or a sleep state.

Through the above-described content, those skilled in the art will be able to see that various changes and modifications can be made without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention should not be limited to what is described in the detailed description of the specification, but should be defined by the scope of the patent 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: dustproof material 210: first screen driving unit
220: second screen driver 300: host system
1000: mobile device

Claims (8)

a display panel providing a screen;
a cover glass disposed in 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
It includes a mid frame disposed between the back of the display panel and the back cover,
The mid frame includes a first hole and a second hole,
The speaker is accommodated in the first hole, and the microphone is accommodated in the second hole,
The screen includes a first screen and a second screen,
The speaker is disposed on the back of the display panel displaying the first screen,
The microphone is disposed on the back of the display panel that displays the second screen. According to paragraph 1,
a main board disposed between the mid frame and the back cover; and
A display device further comprising a mid-frame cover disposed between the main board and the back cover. According to paragraph 2,
The display device includes the main board including the first hole and a third hole in which the speaker is accommodated. According to clause 3,
The display device wherein the main board is formed in a shape that does not overlap with the space where the microphone is accommodated. According to paragraph 1,
The display panel includes a first display panel providing the first screen and a second display panel displaying the second screen,
The speaker is disposed on the back of the first display panel,
The display device is wherein the microphone is disposed on the back of the second display panel. According to paragraph 1,
Each of the speaker and the microphone,
a bobbin attached to the back of the display panel and wound with a voice coil; and
A display device comprising a plate to which a permanent magnet interoperating with the voice coil is fastened. According to paragraph 1,
A display device wherein the cover glass is bonded to the front of the display panel using an adhesive. A mobile device comprising the display device according to any one of claims 1 to 7.