Backlight device and multimedia backlight touch system comprising same

Abstract

The invention discloses a backlight device which comprises a light guide plate, a plurality of microstructures, a first light-emitting element, a second light-emitting element and a light attenuation structure. The light guide plate has a first through hole and a second through hole. The plurality of microstructures are formed on the light guide plate and form light extraction symbols. The first through hole is located at a first side with respect to a central axis defined by the light extraction symbol. The second through hole is located at a second side relative to the central axis. And the distribution density of the plurality of microstructures is gradually reduced from the second side to the first side. When the first light-emitting element arranged in the first through hole does not emit the first colored light and the second light-emitting element arranged in the second through hole emits the second colored light, the second colored light emitted by the second light-emitting element firstly passes through the light attenuation structure and then is guided to the plurality of microstructures, so that the light extraction symbol uniformly presents the second colored light. According to the backlight device, when different colored lights are switched, the light extraction symbols of the backlight device can uniformly present the colored lights.

Description

Technical Field

[0001] The present invention relates to a backlight device with light extraction symbols and a multimedia backlight touch system including the backlight device, and more particularly to a backlight device whose light extraction symbols can uniformly present the light colors when switching between different light colors and a multimedia backlight touch system including the backlight device. Background Art

[0002] Current data processing systems (e.g., notebook computers, etc.) have touchpads configured with backlight devices for input. Such backlight devices have light extraction symbols, for example, light extraction symbols representing functions such as photography and microphone. Such backlight devices also include the function of emitting different colored lights, so that the light extraction symbols can present different colored lights, so that the light extraction symbols can show the status of the functions they represent. For example, the light extraction symbol representing the photography function presents red light to indicate that the photography function of the data processing system is in the off state, and the light extraction symbol representing the photography function presents white light to indicate that the photography function of the data processing system is in the on state. For another example, the light extraction symbol representing the microphone function presents red light to indicate that the microphone function of the data processing system is in the off state, and the light extraction symbol representing the microphone function presents white light to indicate that the microphone function of the data processing system is in the on state.

[0003] However, the light extraction symbols of the backlight device in the prior art cannot be uniformly presented when presenting different colored lights. Summary of the invention

[0004] In view of the problems in the prior art, an object of the present invention is to provide a backlight device and a multimedia backlight touch control system including the backlight device to solve the above problems.

[0005] Therefore, the present invention provides a backlight device, which includes: A light guide plate, the light guide plate having a front surface, a back surface, a first through hole and a second through hole; a plurality of first microstructures, the plurality of first microstructures being formed on the light guide plate, the plurality of first microstructures constituting a light extraction symbol, the light extraction symbol defining a central axis, wherein the first through hole is located on a first side of the central axis, the second through hole is located on a second side of the central axis opposite to the first side, the first through hole having a first light incident surface close to the light extraction symbol, the second through hole having a second light incident surface close to the light extraction symbol, and the distribution density of the plurality of first microstructures gradually decreasing from the second side toward the first side; A first light-emitting element, the first light-emitting element is disposed in the first through hole, and the first light-emitting element is used to emit a first color light toward the light extraction symbol; a second light-emitting element, the second light-emitting element being disposed in the second through hole and configured to emit a second color light toward the light extraction symbol; and a light attenuation structure, wherein the light attenuation structure is formed on the light guide plate, and the light attenuation structure is located between the second through hole and the light extraction symbol and the light attenuation structure is close to the second side, When the first light-emitting element emits the first color light and the second light-emitting element does not emit light, the first color light emitted by the first light-emitting element is guided to the multiple first microstructures so that the light extraction symbol uniformly presents the first color light; when the first light-emitting element does not emit the first color light and the second light-emitting element emits the second color light, the second color light emitted by the second light-emitting element first passes through the light attenuation structure and then is guided to the multiple first microstructures so that the light extraction symbol uniformly presents the second color light.

[0006] As an optional technical solution, a plurality of second microstructures are further formed on the light guide plate, and the light attenuation structure is composed of the plurality of second microstructures.

[0007] As an optional technical solution, the light attenuation structure is formed by arranging a dark coating on the light guide plate.

[0008] As an optional technical solution, the second through hole has a second light-emitting surface facing the light extraction symbol, and the second light-emitting surface is partially non-planar to adjust the local coupling distance of the second light-emitting element.

[0009] As an optional technical solution, a first angle between a first normal direction of the first light incident surface and the central axis is an acute angle.

[0010] As an optional technical solution, a second angle between a second normal direction of the second light incident surface and the central axis is an acute angle.

[0011] As an optional technical solution, the first through hole is communicated with the second through hole.

[0012] The present invention also provides a multimedia backlight touch control system, the multimedia backlight touch control system comprising: A backlight device as described above; A touch panel, which is arranged below the backlight device; a light-transmitting protective layer, the light-transmitting protective layer being attached to the backlight device, the light-transmitting protective layer having a light-transmitting symbol, the light-transmitting symbol being aligned with the light extraction symbol and having a shape corresponding to the light extraction symbol; and A data processing device, the data processing device can communicate with the backlight device and the touch panel, and the data processing device is used to selectively execute or not execute a multimedia application; When the user touches the translucent symbol to trigger the touchpad and thereby instructs the data processing device to execute the multimedia application, the first light-emitting element emits a first color of light; when the user touches the translucent symbol again to trigger the touchpad again and thereby instructs the computer not to execute the multimedia application, the second light-emitting element emits a second color of light.

[0013] As an optional technical solution, the multimedia application is a microphone function or a photography function.

[0014] As an optional technical solution, the data processing device communicates with the backlight device and the touch panel wirelessly.

[0015] Compared to the prior art, the backlight device of the present invention uses different light-emitting elements to emit different colored lights respectively, and includes structures not taught or implied by the backlight devices of the prior art, specifically, a first micro-light structure with a gradient density and a light attenuation structure, which can make the light emitted by the light-emitting elements of different colored lights uniformly present the corresponding colored lights when being guided to the light extraction symbols, so that when the backlight device according to the present invention switches to different colored lights, its light extraction symbols can uniformly present the colored lights. The multimedia backlight touch system according to the present invention allows users to intuitively operate the functions represented by the light extraction symbols, and allows the light extraction symbols to uniformly present different colored lights to show the status of the functions they represent.

[0016] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic top view of a backlight device according to a preferred embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic cross-sectional view of the backlight device along line AA.

[0019] Figure 3 for Figure 1 A schematic cross-sectional view of the backlight device along line BB.

[0020] Figure 4 A backlight device according to a preferred embodiment of the present invention is provided along the Figure 1 Schematic diagram of the cross section along line BB.

[0021] Figure 5 FIG. 4 is a partial cross-sectional schematic diagram of a multimedia backlight touch control system according to a preferred embodiment of the present invention.

[0022] Figure 6FIG. 4 is another partial cross-sectional schematic diagram of a multimedia backlight touch control system according to a preferred embodiment of the present invention. Implementation

[0023] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The above-mentioned drawings schematically depict a backlight device according to a preferred embodiment of the present invention. Figure 1 is a schematic top view of a backlight device according to a preferred embodiment of the present invention; Figure 2 for Figure 1 A schematic cross-sectional view of the backlight device along line AA; Figure 3 for Figure 1 A schematic cross-sectional view of the middle backlight device along line BB; Figure 4 A backlight device according to a preferred embodiment of the present invention is provided along the Figure 1 The backlight device 1 according to the preferred embodiment of the present invention can be arranged on a touch panel to display the status of certain functions of the data processing system, but the present invention is not limited thereto.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the backlight device 1 according to a preferred embodiment of the present invention includes a light guide plate 10 , a plurality of first microstructures 12 , a first light emitting element 14 , a second light emitting element 16 and a light attenuation structure 18 .

[0026] The light guide plate 10 has a front surface 100, a back surface 102, a first through hole 104 and a second through hole 106. The front surface 100 is opposite to the back surface 102. If the backlight device 1 of the preferred embodiment of the present invention is disposed on a touch panel, the positions of the first through hole 104 and the second through hole 106 must avoid the limitation of the sensing electrode of the touch panel.

[0027] In a specific embodiment, the light guide plate 10 can be made of acrylic, silicone, thermoplastic polyurethane (TPU) or other commercial light guide polymer materials. The thickness of the light guide plate 10 can be determined as needed without special limitation.

[0028] A plurality of first microstructures 12 are formed on the light guide plate 10. In a specific embodiment, the plurality of first microstructures 12 may be formed on the back surface 102 of the light guide plate 10, such as Figure 2 and Figure 3In another specific embodiment, a plurality of first microstructures 12 can also be formed on the front surface 100 of the light guide plate 10 .

[0029] like Figure 1 As shown, a plurality of first microstructures 12 form a light extraction symbol 122. The light extraction symbol 122 defines a central axis 124. In one embodiment, the light extraction symbol 122 defines the central axis 124 along the long side direction of the light guide plate 10 (that is, the central axis 124 extends along the long side direction of the light guide plate 10). In another embodiment, the light extraction symbol 122 defines the central axis 124 along the arrangement direction of the light extraction symbol 122, the light attenuation structure 18, and the two light-emitting elements. The central axis 124 is approximately located at the center of the light extraction symbol 122. The first through hole 104 is located on a first side 126 of the central axis 124. The second through hole 106 is located on a second side 128 of the central axis 124 opposite to the first side 126. In particular, the distribution density of the plurality of first microstructures 12 gradually decreases from the second side 128 toward the first side 126. The light extraction symbol 122 can represent certain functions of the data processing system to which it is connected, for example, representing functions such as photography and microphone. In this embodiment, the light extraction symbol 122 defines the aforementioned central axis 124 in one direction, and the first light emitting element 14 and the second light emitting element 16 are respectively located on both sides of the central axis 124, and can emit corresponding colored light from both sides of the central axis 124 toward the light extraction symbol 122. In actual operation, the light extraction symbol 122 can also define another central axis (not shown) in another direction, and this other central axis is, for example, perpendicular to the aforementioned central axis 124. In this case, the first light emitting element 14 and the second light emitting element 16 can be located on the same side of this other central axis.

[0030] The first through hole 104 has a first light incident surface 1042 close to the light extraction symbol 122. The second through hole 106 has a second light incident surface 1062 close to the light extraction symbol 122. The first light-emitting element 14 is disposed in the first through hole 104, and is used to emit a first color light L1, for example, white light, toward the light extraction symbol 122. The first color light L1 emitted by the first light-emitting element 14 is incident on the light guide plate 10 from the first light incident surface 1042. The second light-emitting element 16 is disposed in the second through hole 106, and is used to emit a second color light L2 toward the light extraction symbol 122. The second color light L2 emitted by the second light-emitting element 16 is incident on the light guide plate 10 from the second light incident surface 1062. In one embodiment, along the extension direction of the central axis 124, the spacing between the first through hole 104 and the light extraction symbol 122 may be equal to the spacing between the second through hole 106 and the light extraction symbol 122, but is not limited thereto. In another embodiment, along the extension direction perpendicular to the central axis 124 , the distance between the first through hole 104 and the central axis 124 may be equal to the distance between the second through hole 106 and the central axis 124 , but is not limited thereto.

[0031] According to a preferred specific embodiment of the present invention, the backlight device 1 utilizes the first light emitting element 14 and the second light emitting element 16 to emit the first color light L1 and the second color light L2 respectively, so that the light extraction symbol 122 can present different first color light L1 and second color light L2, so that the light extraction symbol 122 can display the state of the function it represents. For example, the light extraction symbol 122 representing the photography function presents red light to indicate that the photography function of the data processing system is in the off state, and the light extraction symbol 122 representing the photography function presents white light to indicate that the photography function of the data processing system is in the on state. For another example, the light extraction symbol 122 representing the microphone function presents red light to indicate that the microphone function of the data processing system is in the off state, and the light extraction symbol 122 representing the microphone function presents white light to indicate that the microphone function of the data processing system is in the on state.

[0032] In a specific embodiment, the first light emitting element 14 and the second light emitting element 16 may be light emitting diode elements (such as LED, Micro-LED or Mini-LED, etc.) or organic light emitting diode elements, but the present invention is not limited thereto.

[0033] The light attenuation structure 18 is formed on the light guide plate 10, and the light attenuation structure 18 is located at the second side 128 where the second through hole 106 and the light extraction symbol 122 are located. Further, the light attenuation structure 18 is located between the second through hole 106 and the light extraction symbol 122 (specifically, the light extraction symbol 122 on the second side 128), so that when the second color light L2 emitted by the second light emitting element 16 enters the light guide plate 10, it will first pass through the light attenuation structure 18 and then reach the light extraction symbol 122.

[0034] like Figure 2 As shown, when the first light emitting element 14 emits the first color light L1 and the second light emitting element 16 does not emit light, the first color light L1 emitted by the first light emitting element 14 is guided to the plurality of first microstructures 12, so that the light extraction symbol 122 uniformly presents the first color light L1. This result is caused because the light intensity of the first color light L1 emitted by the first light emitting element 14 located at the first side 126 and guided to the first side 126 of the light extraction symbol 122 is higher than the light intensity of the first color light L1 guided to the second side 128 of the light extraction symbol 122. However, since the distribution density of the plurality of first microstructures 12 gradually decreases from the second side 128 toward the first side 126, the light intensity of the first color light L1 guided to the first side 126 of the light extraction symbol 122 reflected by the first microstructures 12 located at the first side 126 with a smaller number is equal to the light intensity of the second color light L2 guided to the second side 128 of the light extraction symbol 122 and reflected by the first microstructures 12 located at the second side 128 with a larger number.

[0035] like Figure 3 As shown, when the first light emitting element 14 does not emit the first color light L1 and the second light emitting element 16 emits the second color light L2, the second color light L2 emitted by the second light emitting element 16 first passes through the light attenuation structure 18 and is then guided to the plurality of first microstructures 12, so that the light extraction symbol 122 uniformly presents the second color light L2. This result is caused because the light intensity of the second color light L2 emitted by the second light emitting element 16 located at the second side 128 and guided to the first side 126 of the light extraction symbol 122 is lower than the light intensity of the second color light L2 guided to the second side 128 of the light extraction symbol 122. However, since the distribution density of the multiple first microstructures 12 gradually decreases from the second side 128 toward the first side 126, the light intensity of the first color light L1 guided to the first side 126 of the light extraction symbol 122 and reflected by the smaller number of first microstructures 12 located on the first side 126 is equal to the light intensity that is first attenuated by the light attenuation structure 18 and then guided to the larger number of first microstructures 12 located on the second side 128.

[0036] In a specific embodiment, Figure 3 As shown, the light attenuation structure 18 can be composed of a plurality of second microstructures 182. Figure 3 In the illustrated example, the plurality of second microstructures 182 are formed on the back surface 102 of the light guide plate 10 . In other embodiments, the plurality of second microstructures 182 may also be formed on the front surface 100 of the light guide plate 10 .

[0037] In another specific embodiment, if Figure 4 As shown, the light attenuation structure 18 can be formed by a dark coating 184. Figure 4 In the example shown, the dark coating 184 is formed on the back surface 102 of the light guide plate 10. In other embodiments, the dark coating 184 may also be formed on the front surface 100 of the light guide plate 10. The dark coating 184 may be formed by a coating process, an evaporation process, or the like. Figure 4 With Figure 3 The components marked with the same numbers have the same or similar structures and functions, and will not be described in detail here.

[0038] In a specific embodiment, Figure 1 As shown, the first angle between the first normal direction 1044 of the first light incident surface 1042 of the first through hole 104 and the central axis 124 is an acute angle. In this way, the light utilization rate of the first color light L1 emitted by the first light emitting element 14 can be improved.

[0039] In a specific embodiment, Figure 1 As shown, the second angle between the second normal direction 1064 of the second light incident surface 1062 of the second through hole 106 and the central axis 124 is an acute angle. In this way, the light utilization rate of the second color light L2 emitted by the second light emitting element 16 can be improved.

[0040] like Figure 1 In the embodiment shown, the first through hole 104 and the second through hole 106 are independent through holes, but the present invention is not limited thereto. In a specific embodiment, since the first light-emitting element 14 and the second light-emitting element 16 do not emit light at the same time, mutual interference will not be formed at the light entrance. The first through hole 104 is connected to the second through hole 106 to simplify the process.

[0041] like Figure 1 In the embodiment shown, the first light incident surface 1042 corresponding to the first light-emitting element 14 and the second light incident surface 1062 corresponding to the second light-emitting element 16 are both regular planes. In another embodiment, the local shape of the second through hole 106 can be adjusted to adjust the local shape of the second light incident surface 1062, so as to adjust and change the local coupling distance of the second light-emitting element 16, so that the second color light L2 emitted by the second light-emitting element 16 can reduce the light energy reaching the light extraction symbol 122 after entering the light guide plate 10 through the adjusted second light incident surface, thereby helping to enhance the uniformity effect of the second color light L2 being guided to the light extraction symbol 122.

[0042] See also Figure 5 and Figure 6 The above-mentioned drawings schematically depict a multimedia backlight touch control system 2 according to a preferred embodiment of the present invention. Figure 5 6 is a partial cross-sectional schematic diagram of a multimedia backlight touch control system according to a preferred embodiment of the present invention; 7 is another partial cross-sectional schematic diagram of a multimedia backlight touch control system according to a preferred embodiment of the present invention. Figure 5 The cross-sectional position of the cross-sectional schematic diagram shown is the same as Figure 1 The cross section along line AA is shown. Figure 6 The cross-sectional position of the cross-sectional schematic diagram shown is the same as Figure 1 The cross section along line BB is shown.

[0043] like Figure 5 and Figure 6 As shown, the multimedia backlight touch control system 2 according to the preferred embodiment of the present invention comprises the backlight device 1 according to the present invention, a touch panel 20, a light-transmitting protective layer 22 and a data processing device (not shown in FIG. Figure 5 , Figure 6 middle).

[0044] The touch panel 20 is disposed below the backlight device 1. The light-transmitting protective layer 22 is attached to the backlight device 1. The light-transmitting protective layer 22 has a light-transmitting symbol 222. The light-transmitting symbol 222 of the light-transmitting protective layer 22 is aligned with the light extraction symbol 122, and its shape corresponds to the light extraction symbol 122. In a specific embodiment, the light-transmitting protective layer 22 can be a light-transmitting film element or a glass sheet.

[0045] The data processing device can communicate with the backlight device 1 and the touch panel 20. In one embodiment, the data processing device is physically and electrically connected to the backlight device 1 and the touch panel 20. In another embodiment, the data processing device communicates with the backlight device 1 and the touch panel 20 wirelessly.

[0046] The data processing device is used to selectively execute or not execute multimedia applications. Figure 5 As shown, when the user 3 touches the translucent symbol 222 of the translucent protective layer 22 to trigger the touch panel 20 and then instructs the data processing device to execute the multimedia application, the first light emitting element emits the first color light L1. Figure 5 In FIG. 3 , user 3 uses a finger as a representative gesture.

[0047] like Figure 6 As shown, when the user 3 touches the translucent symbol 222 of the translucent protective layer 22 again to trigger the touch panel 20 again, thereby instructing the computer not to execute the multimedia application program, the second light emitting element emits the second color light L2.

[0048] In one embodiment, the backlight device 1 and the touchpad 20 can be integrated into an independent electronic device. In another embodiment, the backlight device 1 and the touchpad 20 can be installed on a data processing device. For example, the data processing device is a notebook computer, and the backlight device 1 and the touchpad 20 can be installed on the keyboard of the notebook computer. In another embodiment, the backlight device 1 and the touchpad 20 can be installed on a peripheral device of the data processing device. For example, the data processing device is a desktop computer, a tablet computer, etc., and the backlight device 1 and the touchpad 20 can be installed on a wireless keyboard of the desktop computer, the tablet computer, etc. In this way, the multimedia backlight touch system 2 according to the present invention allows the user 3 to intuitively operate the function represented by the light extraction symbol 122. For example, the data processing device is a notebook computer, and the backlight device 1 and the touchpad 20 are installed on the keyboard of the notebook computer. When the user 3 conducts a video conference by using the multimedia backlight touch system 2 according to the present invention, he or she can directly touch (click) the transparent symbol 222 to turn on or off the function represented by the light extraction symbol 122, without the trouble of operating the mouse to click on the image on the display of the notebook computer.

[0049] In a specific embodiment, the multimedia application may be a microphone function or a camera function.

[0050] In summary, the backlight device of the present invention uses different light-emitting elements to emit different colored lights respectively, and includes structures not taught or implied by the backlight devices of the prior art, specifically, a first micro-light structure with a gradient density and a light attenuation structure, which can make the light emitted by the light-emitting elements of different colored lights uniformly present the corresponding colored lights when being guided to the light extraction symbols, so that when the backlight device of the present invention switches to different colored lights, its light extraction symbols can uniformly present the colored lights. The multimedia backlight touch system of the present invention allows users to intuitively operate the functions represented by the light extraction symbols, and allows the light extraction symbols to uniformly present different colored lights to show the status of the functions they represent.

[0051] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A backlight device, characterized in that: The backlight device comprises: A light guide plate, the light guide plate having a front surface, a back surface, a first through hole and a second through hole; a plurality of first microstructures, the plurality of first microstructures being formed on the light guide plate, the plurality of first microstructures constituting a light extraction symbol, the light extraction symbol defining a central axis, wherein the first through hole is located on a first side of the central axis, the second through hole is located on a second side of the central axis opposite to the first side, the first through hole having a first light incident surface close to the light extraction symbol, the second through hole having a second light incident surface close to the light extraction symbol, and the distribution density of the plurality of first microstructures gradually decreasing from the second side toward the first side; A first light-emitting element, the first light-emitting element is disposed in the first through hole, and the first light-emitting element is used to emit a first color light toward the light extraction symbol; a second light-emitting element, the second light-emitting element being disposed in the second through hole and configured to emit a second color light toward the light extraction symbol; as well as a light attenuation structure, wherein the light attenuation structure is formed on the light guide plate, and the light attenuation structure is located between the second through hole and the light extraction symbol and the light attenuation structure is close to the second side, When the first light-emitting element emits the first color light and the second light-emitting element does not emit light, the first color light emitted by the first light-emitting element is guided to the multiple first microstructures so that the light extraction symbol uniformly presents the first color light; when the first light-emitting element does not emit the first color light and the second light-emitting element emits the second color light, the second color light emitted by the second light-emitting element first passes through the light attenuation structure and then is guided to the multiple first microstructures so that the light extraction symbol uniformly presents the second color light.

2. The backlight device according to claim 1, wherein: A plurality of second microstructures are also formed on the light guide plate, and the light attenuation structure is composed of the plurality of second microstructures.

3. The backlight device according to claim 1, wherein: The light attenuation structure is formed by arranging a dark coating on the light guide plate.

4. The backlight device according to claim 1, wherein: The second through hole has a second light-emitting surface facing the light extraction symbol, and the second light-emitting surface is partially non-planar to adjust the local coupling distance of the second light-emitting element.

5. The backlight device according to claim 1, wherein: A first angle between a first normal direction of the first light incident surface and the central axis is an acute angle.

6. The backlight device according to claim 1, wherein: A second angle between a second normal direction of the second light incident surface and the central axis is an acute angle.

7. The backlight device according to claim 1, wherein: The first through hole is communicated with the second through hole.

8. A multimedia backlight touch control system, characterized in that: The multimedia backlight touch control system includes: The backlight device according to any one of claims 1 to 7; A touch panel, which is arranged below the backlight device; a light-transmitting protective layer, the light-transmitting protective layer being attached to the backlight device, the light-transmitting protective layer having a light-transmitting symbol, the light-transmitting symbol being aligned with the light extraction symbol and having a shape corresponding to the light extraction symbol; and A data processing device, the data processing device can communicate with the backlight device and the touch panel, and the data processing device is used to selectively execute or not execute a multimedia application; When the user touches the translucent symbol to trigger the touchpad and thereby instructs the data processing device to execute the multimedia application, the first light-emitting element emits a first color of light; when the user touches the translucent symbol again to trigger the touchpad again and thereby instructs the computer not to execute the multimedia application, the second light-emitting element emits a second color of light.

9. The multimedia backlight touch control system according to claim 6, wherein: The multimedia application is a microphone function or a photography function.

10. The multimedia backlight touch control system according to claim 6, characterized in that: The data processing device communicates with the backlight device and the touch panel in a wireless manner.

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