Display device and electronic equipment

Abstract

The present application provides a display device and an electronic device, the display device comprising: a back plate; a display panel, the display panel is carried on the back plate, the display panel comprises a liquid crystal layer; a backlight module, the backlight module comprises a light guide plate and a visible light component, the light guide plate comprises a light emitting surface, a first light incident surface and a second light incident surface, the first light incident surface is connected to the light emitting surface in a bending manner or is arranged opposite to the light emitting surface, the second light incident surface is connected to the light emitting surface in a bending manner, the visible light component is arranged corresponding to the first light incident surface, the visible light emitted by the visible light component is incident into the light guide plate via the first light incident surface, and is emitted from the light exiting surface to the liquid crystal layer of the display panel; an infrared light component, the infrared light component is arranged corresponding to the second light incident surface, the infrared light emitted by the infrared light component is incident into the light guide plate via the second light incident surface, and is emitted from the light exiting surface to the liquid crystal layer of the display panel, the infrared light can heat the liquid crystal layer, so that the display device and the electronic device can still operate normally in a low temperature environment.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display device and an electronic device. Background Art

[0002] Various electronic products are becoming more and more popular in various fields such as office, scientific research, medical treatment, automotive and aerospace. However, under harsh conditions, especially in the northern winter environment of dozens of degrees below zero, the liquid crystal self-rotation in the display screen of electronic products will be seriously affected (the normal operating temperature range of liquid crystal is usually 0-50℃), so that electronic equipment cannot be turned on, the display screen is not bright, or the display screen is abnormal. For example, the display screen is prone to optical loss problems such as long response time, afterimage, contrast, etc. under the influence of low temperature. Summary of the invention

[0003] In a first aspect, the present invention provides a display device, comprising:

[0004] Back panel;

[0005] A display panel, the display panel is carried on the back panel, and the display panel includes a liquid crystal layer;

[0006] A backlight module, the backlight module comprising a light guide plate and a visible light component, the light guide plate having a light emitting surface, a first light incident surface and a second light incident surface, the first light incident surface being connected to the light emitting surface in a bending manner or being arranged opposite to the light emitting surface, the second light incident surface being connected to the light emitting surface in a bending manner, the visible light component being arranged corresponding to the first light incident surface, the visible light emitted by the visible light component being incident into the light guide plate via the first light incident surface, and being emitted from the light emitting surface to the liquid crystal layer of the display panel;

[0007] An infrared light component is arranged corresponding to the second light incident surface, and infrared light emitted by the infrared light component is incident into the light guide plate through the second light incident surface, and is emitted to the liquid crystal layer of the display panel through the light emitting surface.

[0008] Wherein, the backlight module further comprises an optical film, and the optical film is arranged adjacent to the light emitting surface of the light guide plate;

[0009] The back panel includes a main body and a frame portion, the main body has a first inner surface adjacent to the light emitting surface, the frame has a second inner surface bent and connected to the first inner surface, the second inner surface faces the second light incident surface, and the frame also has a groove with an opening located on the second inner surface, the groove is used to accommodate the infrared light component.

[0010] Wherein, the first light incident surface is connected to the light emitting surface by bending, and the first light incident surface is arranged opposite to the second light incident surface;

[0011] The frame portion further comprises a bearing surface, the bearing surface is connected to the second inner surface by bending, the bearing surface bears the display panel, and the opening of the groove is at least partially arranged corresponding to the peripheral side surface of the optical film.

[0012] Wherein, the first light incident surface and the light emitting surface are arranged opposite to each other, and the first light incident surface is connected to the second light incident surface by bending;

[0013] The frame portion also has a bearing surface, which includes a first bearing surface and a second bearing surface. The first bearing surface is adjacent to and bears the display panel compared to the second bearing surface, and the second bearing surface is away from the outer periphery of the back plate compared to the first bearing surface. The second bearing surface bears the optical film, and the second bearing surface is connected to the second inner surface by a bend.

[0014] Wherein, the display device further includes a prism bar and a diffusion bar, wherein the prism bar is arranged on a side of the infrared light component adjacent to the second light incident surface, and the prism bar is used to converge the infrared light emitted by the infrared light component;

[0015] The diffusion strip is disposed on a side of the prism strip adjacent to the second light incident surface, and the diffusion strip is used for uniformly diffusing the infrared light emitted by the infrared light component.

[0016] Wherein, the infrared light component comprises a substrate and an infrared light emitting unit, the infrared light emitting unit has an infrared light emitting surface, the substrate has a receiving port and a diffusion port, the receiving port is used to receive the infrared light emitting unit, the diffusion port is used to transmit the infrared light emitted by the infrared light emitting unit, the diffusion port has a first end face and a second end face which are arranged opposite to each other, the first end face is arranged adjacent to the infrared light emitting unit, the first end face is at least partially opposite to the second end face, the second end face is arranged on a side of the first end face away from the infrared light emitting unit, and the second end face is at least partially opposite to the second light incident surface of the light guide plate;

[0017] The first end face has a size range D1, the second end face has a size range D2, and the size range D1 of the first end face and the size range D2 of the second end face satisfy: D1≤D2.

[0018] There is a spacing range H1 between the diffusion strip and the second light incident surface, and the spacing range H1 satisfies: 0.1≤H1≤0.3mm.

[0019] The groove has a depth range H2, the back plate has a thickness range H3, and the depth range H2 of the groove and the thickness range H3 of the back plate satisfy: H2≤0.5×H3.

[0020] In a second aspect, the present invention further provides an electronic device, the electronic device comprising:

[0021] the display device;

[0022] A sensor, the sensor is used to detect the temperature of the display panel and obtain a feedback signal; and

[0023] A control chip, wherein the control chip is electrically connected to the sensor and is used to receive the feedback signal. The control chip is also electrically connected to the infrared light component and selects whether to turn on the infrared light component according to the feedback signal. When the infrared light component is turned on, it emits infrared light to the display panel and heats the display panel.

[0024] The sensor detects the temperature of the display panel. When the temperature of the display panel is lower than a first preset value, the sensor transmits a first feedback signal to the control chip. The control chip receives the first feedback signal and drives the infrared light component to turn on. The infrared light emitted by the infrared light component heats the display panel. When the temperature of the display panel is greater than or equal to the first preset value, the sensor transmits a second feedback signal to the control chip. The control chip receives the second feedback signal and drives the infrared light component to turn off.

[0025] The display device provided in the embodiment of the present application is provided with an infrared light component, and the infrared light emitted by the infrared light component is incident into the light guide plate through the second light incident surface, and is emitted to the liquid crystal layer of the display panel through the light exit surface, and is used to heat the liquid crystal layer of the display panel. The light guide plate can evenly diffuse the infrared light to the display panel, improve the light utilization efficiency of the infrared light, and enable the display device to have a uniform and efficient heating effect on the liquid crystal layer under the setting of limited infrared light components, thereby enabling the display device and the electronic device to still operate normally in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 is a schematic diagram of a display device according to an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A schematic structural diagram of an infrared light component of a cross section of a display device along line AA provided in;

[0029] Figure 3 yes Figure 1 A schematic structural diagram of a visible light component of a cross section of a display device along line AA provided in;

[0030] Figure 4 is a schematic diagram of the propagation path of infrared light emitted by the infrared light component of the first embodiment of the present application;

[0031] Figure 5 is a schematic structural diagram of a cross section of a display device along line AA of a second embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the propagation path of infrared light emitted by the infrared light component of the second embodiment of the present application;

[0033] Figure 7 is a partially enlarged schematic diagram of a display device according to the first embodiment of the present application;

[0034] Figure 8 yes Figure 1 A partial enlarged schematic diagram of a display device provided in;

[0035] Fig. 9 is a partial enlarged schematic diagram of a display device according to a second embodiment of the present application;

[0036] Fig.10 is a partial structural schematic diagram of a cross section of a display device along line AA according to an embodiment of the present application;

[0037] Fig.11 is a partial structural schematic diagram of a cross section of a display device along line AA according to another embodiment of the present application;

[0038] Fig.12 It is a schematic diagram of an electronic device according to an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1-electronic device, 10-display device, 20-sensor, 30-control chip, 11-back plate, 12-display panel, 13-backlight module, 14-infrared light component, 15-prism bar, 16-diffusion bar, 111-main body, 112-frame, 121-liquid crystal layer, 131-light guide plate, 132-visible light component, 133-optical film, 141-substrate, 142-infrared light emitting unit, 151-first sub-prism bar, 152-second sub-prism bar Mirror strip, 1111-first inner surface, 1121-second inner surface, 1122-groove, 1123-bearing surface, 1131-light emitting surface, 1132-first light incident surface, 1133-second light incident surface, 1411-receiving port, 1412-diffusion port, 1421-infrared light emitting surface, 1314-first grid point, 1315-second grid point, 112a-first bearing surface, 112b-second bearing surface, 141a-first end surface, 141b-second end surface. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0043] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 1 is a schematic diagram of a display device according to an embodiment of the present application, Figure 2 yes Figure 1 A schematic structural diagram of an infrared light component of a cross section of a display device along line AA is provided in FIG. Figure 3 yes Figure 1 A schematic structural diagram of a visible light component of a display device along line AA provided in FIG. Figure 4 is a schematic diagram of the propagation path of infrared light emitted by the infrared light component of the first embodiment of the present application, Figure 5 is a schematic structural diagram of a cross section of a display device along line AA according to a second embodiment of the present application, Figure 6 Schematic diagram of the propagation path of infrared light emitted by the infrared light component of the second embodiment of the present application. The present application provides a display device 10, which includes a back plate 11, a display panel 12, a backlight module 13 and an infrared light component 14. The display panel 12 is carried on the back plate 11, and the display panel 12 includes a liquid crystal layer 121. The backlight module 13 includes a light guide plate 131 and a visible light component 132. The light guide plate 131 has a light emitting surface 1131, a first light incident surface 1132 and a second light incident surface 1133. The first light incident surface 1132 is connected to the light emitting surface 1131 by a bending or is arranged opposite to the light emitting surface 1131. The second light incident surface 1133 is connected to the light emitting surface 1131 by a bending. The visible light component 132 is arranged corresponding to the first light incident surface 1132. The visible light emitted by the visible light component 132 is incident into the light guide plate 131 via the first light incident surface 1132, and is emitted from the light emitting surface 1131 to the liquid crystal layer 121 of the display panel 12. The infrared light component 14 is disposed corresponding to the second light incident surface 1133 , and the infrared light emitted by the infrared light component 14 is incident into the light guide plate 131 via the second light incident surface 1133 , and is emitted to the liquid crystal layer 121 of the display panel 12 via the light emitting surface 1131 .

[0045] The display device 10 may be, but is not limited to, a thin film transistor liquid crystal display device 10 (Thin Film Transistor Liquid Crystal Display, TFT-LCD), or a sub-millimeter light emitting diode (Mini Light Emitting Diode, Mini LED) display device 10, or a micro light emitting diode (Micro Light Emitting Diode, Micro LED) display device 10, etc. It can be understood that the display device 10 may also be a display device 10 of other architectures.

[0046] The display panel 12 is carried on the back plate 11. The display panel 12 and the back plate 11 may be fixed by, but not limited to, a foam tape. The display panel 12 may include, but not limited to, a liquid crystal layer 121, a substrate 141, a cover plate, etc. The liquid crystal layer 121 rotates under the control of an electric field to enable the display panel 12 to display images.

[0047] The backlight module 13 may be, but is not limited to, a light guide plate 131, a visible light component 132, an optical film 133, a reflective plate, etc. The light guide plate 131 may be, but is not limited to, a light emitting surface 1131, a first light incident surface 1132, and a second light incident surface 1133, etc. Among them, the light emitting surface 1131 may be, but is not limited to, being arranged directly opposite to the display panel 12. In other words, the orthographic projection of the display panel 12 on the back plate 11 may be, but is not limited to, being an orthographic projection covering the light guide plate 131 on the back plate 11. The first light incident surface 1132 may be, but is not limited to, a plane, a curved surface, or other irregular surfaces. The second light incident surface 1133 may be, but is not limited to, a plane, a curved surface, or other irregular surfaces. The second light incident surface 1133 may be, but is not limited to, connected to the light emitting surface 1131 by bending, and the bending angle between the second light incident surface 1133 and the light emitting surface 1131 may be, but is not limited to, 90° or approximately 90°. It can be understood that the bending angle between the second light incident surface 1133 and the light emitting surface 1131 may also be other angles.

[0048] The visible light component 132 may be, but is not limited to, composed of a light emitting diode (LED), or composed of a sub-millimeter light emitting diode (Mini Light Emitting Diode, Mini LED), or composed of a micro light emitting diode (Micro Light Emitting Diode, Micro LED). It is understandable that the visible light component 132 may also be composed of other types of light emitting elements. The visible light component 132 is arranged corresponding to the first light incident surface 1132. Specifically, the light emitting surface 1131 of the visible light component 132 may be, but is not limited to, arranged to be partially or completely opposite to the first light incident surface 1132 of the light guide plate 131. The visible light component 132 can emit visible light, and the visible light may be, but is not limited to, partially or completely incident into the light guide plate 131 through the first light incident surface 1132, and emitted from the light emitting surface 1131 of the light guide plate 131 to the liquid crystal layer 121 of the display panel 12, providing a visible light source for the display panel 12.

[0049] The infrared light component 14 can be used to emit infrared light. The infrared light component 14 can be, but is not limited to, a driver board and an infrared light emitting unit 142. The driver board can be, but is not limited to, a circuit for setting up a drive to operate the infrared light emitting unit 142, and is used to control the operation of the infrared light emitting unit 142. The infrared light emitting unit 142 can be, but is not limited to, an infrared lamp bead or other components capable of emitting infrared light.

[0050] The infrared light component 14 is arranged corresponding to the second light incident surface 1133. Specifically, the light emitting surface of the infrared light component 14 may be, but is not limited to, being arranged partially or completely opposite to the second light incident surface 1133. The infrared light emitted by the infrared light component 14 may be, but is not limited to, being partially or completely incident into the light guide plate 131 through the second light incident surface 1133, and being emitted to the liquid crystal layer 121 of the display panel 12 through the light exit surface 1131. The infrared light can heat the liquid crystal layer 121 of the display panel 12. Specifically, the infrared light is also called infrared radiation. The infrared light is an electromagnetic wave in the infrared band between visible light and microwaves with a wavelength range of 0.76-1000μm. It is an invisible light with a lower frequency than red light, has an obvious thermal effect, and can heat surrounding objects. When the ambient temperature is too low, the self-propagation of the liquid crystal in the liquid crystal layer 121 will be seriously affected. When the radiation wave number of the infrared light is 2700cm -1 To 3100cm -1 (wavelength 2325nm~2026nm), which is the strong absorption band of the liquid crystal layer 121. The infrared light component 14 of the embodiment of the present application can be but not limited to the outgoing radiation wave number of 2700cm -1 To 3100cm -1 The infrared light (wavelength 2325nm-2026nm) is used to heat the liquid crystal layer 121 of the display panel 12, so that the display panel 12 can work normally in a low temperature environment.

[0051] The backlight module 13 may be, but is not limited to, a direct-type or edge-entry backlight module 13. In the first embodiment of the present application, the backlight module 13 is an edge-entry backlight module 13 as an example for illustration. Specifically, the first light incident surface 1132 may be, but is not limited to, being bent and connected to the light exit surface 1131. The visible light component 132 may be, but is not limited to, being arranged at the edge of the back plate 11. The visible light emitted by the visible light component 132 is diffused by the light guide plate 131 and then emitted from the light exit surface 1131 of the light guide plate 131 to form a surface light source and provide it to the display panel 12. The light emitted by the infrared light component 14 is diffused by the light guide plate 131 and then emitted from the light exit surface 1131 of the light guide plate 131 to heat the liquid crystal layer 121 of the display panel 12. Among them, the process manufacturing cost of the edge-entry backlight module 13 is low and at the same time, a relatively thin display device 10 body can be created.

[0052] In the second embodiment of the present application, the backlight module 13 is taken as an example of a direct-type backlight module 13. Specifically, the first light incident surface 1132 is arranged opposite to the light emitting surface 1131, and the visible light component 132 is arranged corresponding to the first light incident surface 1132. In other words, the visible light component 132 can be, but is not limited to, arranged on the side of the light guide plate 131 away from the light emitting surface 1131. The first light incident surface 1132 can be, but is not limited to, being bent and connected to the second light incident surface 1133. Compared with the traditional direct-type backlight module 13, the direct-type backlight module 13 provided in the embodiment of the present application adds the design of the light guide plate 131, so as to facilitate the uniform diffusion of the infrared light to the display panel 12, improve the light utilization efficiency of the infrared light, and make the infrared light have a uniform heating effect on the liquid crystal layer 121. Moreover, the light guide plate 131 can also improve the utilization efficiency of the visible light, so that the display device 10 can reduce the number of light-emitting elements in the visible light component 132, thereby reducing costs and having good optical performance, and the distance between the visible light lamp beads and the display panel 12 can be shortened, thereby making the display device 10 lighter and thinner.

[0053] Furthermore, a first mesh point 1314 may be provided on a side of the first light incident surface 1132 of the light guide plate 131 adjacent to the display panel 12. The first mesh point 1314 may be, but is not limited to, a light wave that only allows light waves with a wavelength range of 390nm to 780nm to pass through, that is, the first mesh point 1314 allows the visible light to pass through, and reflects or scatters the infrared light irradiated to the first mesh point 1314, thereby reducing the infrared light incident into the light guide plate 131 from being emitted from the first light incident surface 1132, thereby reducing the waste of the infrared light, and ensuring the heating effect of the infrared light on the display panel 12.

[0054] Preferably, the number of the first dots 1314 is multiple, and the multiple first dots 1314 can be but not limited to being sparsely arranged at a position adjacent to the visible light component 132 and densely arranged at a position away from the visible light component 132, that is, a smaller number of the first dots 1314 are set at a position adjacent to the visible light component 132, and a larger number of the first dots 1314 are set at a position away from the visible light component 132, thereby ensuring that the visible light can be sufficiently incident on the light guide plate 131, thereby ensuring the display quality of the display device 10.

[0055] The second light incident surface 1133 of the light guide plate 131 adjacent to the visible light component 132 may be provided with, but not limited to, second mesh dots 1315. The second mesh dots 1315 may be, but not limited to, only allow light waves with a wavelength range of 2325nm to 2026nm to pass through, that is, the second mesh dots 1315 allow the infrared light to pass through, and reflect or scatter the visible light irradiated to the second mesh dots 1315, thereby reducing the visible light incident into the light guide plate 131 from being emitted from the second light incident surface 1133, thereby reducing the waste of the visible light and ensuring the display quality of the display device 10.

[0056] Preferably, the number of the second grid points 1315 is multiple, and the multiple second grid points 1315 can be but not limited to being sparsely arranged at a position adjacent to the infrared light component 14 and densely arranged at a position away from the infrared light component 14, that is, a smaller number of the second grid points 1315 are set at a position adjacent to the infrared light component 14, and a larger number of the second grid points 1315 are set at a position away from the infrared light component 14, thereby ensuring that the infrared light can be sufficiently emitted into the light guide plate 131, thereby ensuring the heating effect of the infrared light on the display panel 12.

[0057] In summary, the display device 10 provided in the embodiment of the present application is provided with an infrared light component 14, and the infrared light component 14 can be, but is not limited to, an infrared light component with an outgoing radiation wave number of 2700 cm -1 To 3100cm -1 The infrared light (wavelength 2325nm~2026nm) is incident into the light guide plate 131 through the second light incident surface 1133, and is emitted to the liquid crystal layer 121 of the display panel 12 through the light emitting surface 1131, and is used to heat the liquid crystal layer 121 of the display panel 12. The light guide plate 131 can evenly diffuse the infrared light to the display panel 12, thereby improving the light utilization efficiency of the infrared light, and can enable the display device 10 to have a uniform and efficient heating effect on the liquid crystal layer 121 under the setting of a limited infrared light component 14, thereby enabling the display device 10 to still operate normally in a low temperature environment.

[0058] Please refer again Figure 2 and Figure 5 The backlight module 13 also includes an optical film 133, and the optical film 133 is arranged adjacent to the light emitting surface 1131 of the light guide plate 131. The back panel 11 includes a main body 111 and a frame portion 112, the main body 111 has a first inner surface 1111 adjacent to the light emitting surface 1131, the frame portion 112 has a second inner surface 1121 bent and connected to the first inner surface 1111, the second inner surface 1121 faces the second light incident surface 1133, and the frame portion 112 also has a groove 1122 with an opening located on the second inner surface 1121, and the groove 1122 is used to accommodate the infrared light component 14.

[0059] The optical film 133 may be, but is not limited to, disposed in contact with the light emitting surface 1131 of the light guide plate 131 , so as to make the light source incident on the display panel 12 more uniform and improve the display quality.

[0060] The main body 111 may be, but is not limited to, disposed opposite to the light guide plate 131, and the main body 111 has a first inner surface 1111 adjacent to the light emitting surface 1131. The frame portion 112 may be, but is not limited to, integrally formed with the main body 111. The frame portion 112 has a second inner surface 1121 bent and connected to the first inner surface 1111, and the bending angle between the second inner surface 1121 and the first inner surface 1111 may be, but is not limited to, 90° or approximately 90°.

[0061] In the first embodiment of the present application, the main body 111 may be, but is not limited to, used to carry the light guide plate 131 and the optical film 133. Specifically, the light guide plate 131 may be, but is not limited to, a first inner surface 1111 disposed on the main body 111. The optical film 133 is carried on the light emitting surface 1131 of the light guide plate 131, and the peripheral side surface of the optical film 133 may be, but is not limited to, partially disposed opposite to the opening of the groove 1122, so that the infrared light can be incident more on the light guide plate 131 and the optical film 133, thereby improving the light utilization efficiency of the infrared light.

[0062] In the second embodiment of the present application, the main body 111 may be, but is not limited to, used to carry the visible light component 132 and the light guide plate 131. Specifically, the visible light component 132 may be, but is not limited to, disposed on the first inner surface 1111 of the main body 111, the light guide plate 131 may be, but is not limited to, supported on the first inner surface 1111 of the main body 111 through a support, and the light guide plate 131 may be, but is not limited to, spaced from the visible light component 132, thereby preventing the light guide plate 131 from squeezing the visible light component 132 and causing damage to the visible light component 132. The optical film 133 may be, but is not limited to, partially supported on the frame 112 and partially supported on the light guide plate 131, thereby reducing the gravity effect on the light guide plate 131 when the optical film 133 is pressed, thereby preventing the light guide plate 131 from deforming and squeezing the visible light component 132.

[0063] The second inner surface 1121 faces the second light incident surface 1133. Specifically, the plane where the second inner surface 1121 is located can be, but is not limited to, partially opposite to or opposite to the second light incident surface 1133. The frame portion 112 also has a groove 1122 whose opening is located on the second inner surface 1121. Specifically, the opening of the groove 1122 can be, but is not limited to, partially opposite to or opposite to the second light incident surface 1133, so that the infrared light can be more fully incident on the light guide plate 131. The number of the grooves 1122 can be, but is not limited to, one, two, or more. The shape of the groove 1122 can be, but is not limited to, a trumpet shape, or a shape close to a trumpet shape, so as to facilitate the diffusion of the infrared light to the light guide plate 131.

[0064] The infrared light component 14 is arranged in the groove 1122 of the frame portion 112. Compared with the frame portion 112 not having the groove 1122 and directly attaching the infrared light component 14 to the side wall of the frame portion 112, the infrared light component 14 is accommodated in the groove 1122 of the frame portion 112, which can expand the proportion of the display area of ​​the display device 10 and reduce the proportion of the non-display area of ​​the display device 10, thereby meeting the demand for a narrow frame design of the display device 10. Furthermore, compared to the infrared light component 14 protruding from the frame portion 112, the infrared light component 14 is accommodated in the groove 1122 of the frame portion 112, and the infrared light emitted by the infrared light component 14 can be directly emitted from the plane where the second inner surface 1121 of the back panel 11 is located, so that the coverage area of ​​the infrared light is more complete, that is, the side wall of the groove 1122 formed by the frame portion 112 can converge the infrared light component 14, so that the infrared light emitted by the infrared light component 14 can be incident on the light guide plate 131 more, thereby reducing the waste of the infrared light and improving the utilization efficiency of the infrared light.

[0065] See also Figure 2 , Figure 3 , Figure 7 and Figure 8 , Figure 7 is a partially enlarged schematic diagram of a display device according to the first embodiment of the present application, Figure 8 yes Figure 1 The first light incident surface 1132 is connected to the light emitting surface 1131 by bending, and the first light incident surface 1132 is arranged opposite to the second light incident surface 1133. The frame portion 112 further has a bearing surface 1123, which is connected to the second inner surface 1121 by bending, and the bearing surface 1123 bears the display panel 12, and the opening of the groove 1122 is arranged at least partially corresponding to the peripheral side surface of the optical film 133.

[0066] In the first embodiment of the present application, the first light incident surface 1132 may be, but is not limited to, connected to the light exiting surface 1131 by bending. The first light incident surface 1132 may be, but is not limited to, arranged opposite to the second light incident surface 1133. In other words, the light guide plate 131 may be, but is not limited to, having a peripheral side surface connected to the light exiting surface 1131 by bending, the visible light component 132 and the infrared light component 14 may be, but are not limited to, arranged adjacent to the peripheral side surface, and the visible light component 132 and the infrared light component 14 may be arranged on opposite sides of the light guide plate 131. It can be understood that in other embodiments of the present application, the display device 10 may also arrange the infrared light component 14 on other peripheral sides of the light guide plate 131, so as to enhance the heating effect on the display panel 12.

[0067] The frame portion 112 further has a bearing surface 1123 bent and connected to the second inner surface 1121. The bending angle between the bearing surface 1123 and the second inner surface 1121 can be, but is not limited to, 90° or approximately 90°. In the first embodiment of the present application, the bearing surface 1123 can be, but is not limited to, used to bear the display panel 12.

[0068] The opening of the groove 1122 may be, but is not limited to, partially or entirely arranged to correspond to the peripheral side surface of the optical film 133. In other words, the opening of the groove 1122 may be, but is not limited to, partially or entirely arranged to correspond to the peripheral side surface of the optical film 133, so that the infrared light can be incident on the light guide plate 131 and the optical film 133 more, thereby improving the light utilization efficiency of the infrared light, thereby enhancing the heating effect of the infrared light component 14 on the display panel 12, so that the display panel 12 can be heated quickly.

[0069] See also Figure 5 , Figure 6 and Fig. 9 , Fig. 9 It is a partial enlarged schematic diagram of the display device of the second embodiment of the present application. The first light incident surface 1132 is arranged opposite to the light emitting surface 1131, and the first light incident surface 1132 is connected to the second light incident surface 1133 by bending. The frame portion 112 also has a bearing surface 1123, and the bearing surface 1123 includes a first bearing surface 112a and a second bearing surface 112b, the first bearing surface 112a is adjacent to and bears the display panel 12 compared to the second bearing surface 112b, the second bearing surface 112b is away from the outer periphery of the back plate 11 compared to the first bearing surface 112a, the second bearing surface 112b bears the optical film 133, and the second bearing surface 112b is connected to the second inner surface 1121 by bending.

[0070] In the second embodiment of the present application, the first light incident surface 1132 may be, but is not limited to, disposed opposite to the light emitting surface 1131. In other words, the visible light component 132 may be, but is not limited to, disposed on the side of the light guide plate 131 away from the light emitting surface 1131. The first light incident surface 1132 may be, but is not limited to, bent and connected to the second light incident surface 1133, and the bending angle between the first light incident surface 1132 and the second light incident surface 1133 may be, but is not limited to, 90° or approximately 90°.

[0071] The first carrying surface 112a and the second carrying surface 112b may be connected to each other by bending through a connecting surface, but are not limited to being connected to each other. The first carrying surface 112a may be disposed closer to the display panel 12 than the second carrying surface 112b, but are not limited to being connected to each other, that is, the spacing distance between the first carrying surface 112a and the display panel 12 is smaller than the spacing distance between the second carrying surface 112b and the display panel 12.

[0072] The second bearing surface 112b may be, but is not limited to, a portion away from the outer periphery of the back plate 11 compared to the first bearing surface 112a, that is, the spacing distance between the first bearing surface 112a and the outer periphery of the back plate 11 is smaller than the spacing distance between the second bearing surface 112b and the outer periphery of the back plate 11. The second bearing surface 112b may be, but is not limited to, connected to the second inner surface 1121 by bending, and the bending angle between the second bearing surface 112b and the second inner surface 1121 may be, but is not limited to, 90° or approximately 90°.

[0073] The first bearing surface 112a can be used to bear the display panel 12. The second bearing surface 112b can be used to bear the optical film 133, thereby reducing the gravity effect on the light guide plate 131 when the optical film 133 is pressed, thereby preventing the light guide plate 131 from deforming and squeezing the visible light component 132, thereby avoiding damage to the visible light component 132 and ensuring the optical quality of the display device 10.

[0074] Please refer again Figure 2 The display device 10 further includes a prism bar 15 and a diffusion bar 16. The prism bar 15 is disposed on a side of the infrared light component 14 adjacent to the second light incident surface 1133, and the prism bar 15 is used to converge the infrared light emitted by the infrared light component 14. The diffusion bar 16 is disposed on a side of the prism bar 15 adjacent to the second light incident surface 1133, and the diffusion bar 16 is used to evenly diffuse the infrared light emitted by the infrared light component 14.

[0075] The prism bar 15 may be, but is not limited to, used to adjust the emission angle of the infrared light. The prism bar 15 is disposed on a side of the infrared light component 14 adjacent to the second light incident surface 1133. The prism bar 15 may be, but is not limited to, disposed to cover the opening of the groove 1122, and the groove 1122 is used to accommodate the infrared light component 14, so that the infrared light emitted by the infrared light component 14 can be adjusted by the prism bar 15 and then incident on the light guide plate 131, thereby greatly improving the utilization efficiency of the infrared light.

[0076] The prism bar 15 may include, but is not limited to, a first sub-prism bar 151 and a second sub-prism bar 152, and the first sub-prism bar 151 and the second sub-prism bar 152 may be, but are not limited to, stacked. The first sub-prism bar 151 may be, but is not limited to, a prism bar 15 with a specification of 0°, and the first sub-prism bar 151 may be, but is not limited to, disposed adjacent to the infrared light component 14. The second sub-prism bar 152 may be, but is not limited to, a prism bar 15 with a specification of 90°, and the second sub-prism bar 152 may be, but is not limited to, disposed adjacent to the light guide plate 131, thereby converging the infrared light emitted by the infrared light component 14, so that more infrared light can be incident on the light guide plate 131.

[0077] The diffusion bar 16 is disposed on a side of the prism bar 15 adjacent to the second light incident surface 1133 of the light guide plate 131. The diffusion bar 16 may be, but is not limited to, disposed in contact with the prism bar 15. The diffusion bar 16 may be used to evenly diffuse the infrared light passing through the prism bar 15, so that the infrared light may evenly diffuse to the light guide plate 131, thereby greatly improving the utilization efficiency of the infrared light and facilitating the rapid heating of the display panel 12.

[0078] See also Fig.10 , Fig.10It is a partial structural schematic diagram of a cross section of a display device along line AA of an embodiment of the present application. The infrared light component 14 includes a substrate 141 and an infrared light emitting unit 142, the infrared light emitting unit 142 has an infrared light emitting surface 1421, the substrate 141 has a receiving port 1411 and a diffusion port 1412, the receiving port 1411 is used to receive the infrared light emitting unit 142, the diffusion port 1412 is used to transmit the infrared light emitted by the infrared light emitting unit 142, the diffusion port 1412 has a first end face 141a and a second end face 141b disposed opposite to each other, the first end face 141a is disposed adjacent to the infrared light emitting unit 142, the first end face 141a is at least partially opposite to the second end face 141b, the second end face 141b is disposed on the side of the first end face 141a away from the infrared light emitting unit 142, and the second end face 141b is at least partially opposite to the second light incident surface 1133 of the light guide plate 131. The first end surface 141a has a size range D1, the second end surface 141b has a size range D2, and the size range D1 of the first end surface 141a and the size range D2 of the second end surface 141b satisfy: D1≤D2.

[0079] The substrate 141 may be, but is not limited to, a driving board of the infrared light assembly 14, and the driving board may be, but is not limited to, a circuit for driving the infrared light emitting unit 142 to operate and control the operation of the infrared light emitting unit 142. The infrared light emitting unit 142 may be, but is not limited to, an infrared lamp bead or other components capable of emitting infrared light. The infrared light emitting surface 1421 may be used to emit infrared light.

[0080] The receiving opening 1411 may be, but is not limited to, used to receive the infrared light emitting unit 142. The diffusion opening 1412 may be connected to the receiving opening 1411 and used to diffuse the infrared light. The first end surface 141a may be, but is not limited to, partially facing or fully facing the infrared light emitting surface 1421, so that more infrared light can pass through the diffusion opening 1412. The second end surface 141b may be, but is not limited to, partially facing or fully facing the second light incident surface 1133 of the light guide plate 131, so that more infrared light can diffuse to the light guide plate 131.

[0081] The first end surface 141a has a size range D1, and the size range D1 may be, but is not limited to, the distance range between the two points of the first end surface 141a that are the largest in the transverse direction, and the first transverse direction may be, but is not limited to, parallel to or substantially parallel to the plane where the first end surface 141a is located. The second end surface 141b has a size range D2, and the size range D2 may be, but is not limited to, the distance range between the two points of the second end surface 141b that are the largest in the second transverse direction, and the second transverse direction may be, but is not limited to, parallel to or substantially parallel to the plane where the second end surface 141b is located. The size range D1 of the first end surface 141a may be, but is not limited to, less than or equal to the size range D2 of the second end surface 141b, that is, it satisfies: D1≤D2. Furthermore, the first end surface 141a may be, but is not limited to, partially facing or completely facing the second end surface 141b, so that the diffusion port 1412 has a trumpet-shaped or trumpet-like design, thereby facilitating the diffusion of the infrared light, allowing more infrared light to be emitted to the light guide plate 131, reducing the waste of the infrared light, and thereby achieving uniform and efficient heating of the display panel 12 with a limited number of the infrared light-emitting units 142.

[0082] See also Fig.11 , Fig.11 It is a partial structural schematic diagram of a cross section of a display device along line AA of another embodiment of the present application. A spacing range H1 exists between the diffusion strip 16 and the second light incident surface 1133 , and the spacing range H1 satisfies: 0.1≤H1≤0.3mm.

[0083] The spacing range H1 may be, but is not limited to, the spacing range between two points of the minimum distance between the surface of the diffusion strip 16 adjacent to the second light incident surface 1133 and the second light incident surface 1133. The spacing range H1 may be, but is not limited to, 0.1mm, or 0.15mm, or 0.2mm, or 0.25mm, or 0.3mm, etc. It can be understood that the spacing range H1 may also be other values, as long as the spacing range H1 satisfies 0.1≤H1≤0.3mm. The spacing range H1 satisfies 0.1≤H1≤0.3mm. On the one hand, it can avoid the collision between the light guide plate 131 and the diffusion strip 16 when deformation occurs, and on the other hand, it can enable the infrared light to be fully diffused to the light guide plate 131, thereby achieving an efficient heating effect on the display panel 12.

[0084] Please refer again Fig.11The groove 1122 has a depth range H2, the back plate 11 has a thickness range H3, and the depth range H2 of the groove 1122 and the thickness range H3 of the back plate 11 satisfy: H2≤0.5×H3.

[0085] The groove 1122 has a depth range H2, and the depth range H2 may be but is not limited to a numerical range of the maximum depth of the groove 1122 in the longitudinal extension direction. The back panel 11 has a thickness range H3, and the thickness range H3 may be but is not limited to a numerical range of the thickness of the back panel 11 in the longitudinal extension direction of the groove 1122. It can be understood that the back panel 11 may also have other thickness ranges at other positions where the groove 1122 is not provided, and the thickness ranges of the back panel 11 at other positions should not be a limitation on the display device 10 provided in this embodiment.

[0086] The depth range H2 of the groove 1122 may be, but is not limited to, equal to 0.2×H3, or 0.3×H3, or 0.4×H3, 0.5×H3, etc., as long as H2≤0.5×H3 is satisfied. The depth range H2 of the groove 1122 and the thickness range H3 of the back plate 11 satisfy: H2≤0.5×H3, so that the groove 1122 has enough space to diffuse the infrared light, and can also prevent the bearing capacity of the back plate 11 from being affected by the excessive depth of the groove 1122, and prevent the back plate 11 from being broken and unstable, thereby ensuring the product yield of the display device 10.

[0087] See also Fig.12 , Fig.12 Schematic diagram of an electronic device of an embodiment of the present application. The present application also provides an electronic device 1, the electronic device 1 includes the display device 10, a sensor 20 and a control chip 30, etc. The sensor 20 is used to detect the temperature of the display panel 12 and obtain a feedback signal. The control chip 30 is electrically connected to the sensor 20 and is used to receive the feedback signal. The control chip 30 is also electrically connected to the infrared light component 14 and selects whether to turn on the infrared light component 14 according to the feedback signal. When the infrared light component 14 is turned on, it emits infrared light to the display panel 12 and heats the display panel 12.

[0088] The electronic device 1 may be, but is not limited to, a smart phone, a portable phone, a navigation device, a television (TV), a car audio system, a laptop computer, a tablet computer, a portable multimedia player (PMP), a personal digital assistant (PDA), or the like, and may be a device with a display function.

[0089] The sensor 20 may be, but is not limited to, used to detect the temperature of the display panel 12. The sensor 20 may be, but is not limited to, detecting the temperature of the display panel 12 through a pin or other temperature detection component. The sensor 20 may also include any other functional device with temperature sensing, such as a thermistor. It is understandable that the structural composition of the sensor 20 should not be a limitation on the electronic device 1 provided in this embodiment. The sensor 20 is used to detect the temperature of the display panel 12 and obtain a feedback signal. The feedback signal may be, but is not limited to, a current signal, a voltage signal, etc.

[0090] The control chip 30 may be, but is not limited to, electrically connected to the sensor 20 through a pin or a transfer circuit board. The control chip 30 is electrically connected to the sensor 20 and receives the feedback signal. The control chip 30 may be, but is not limited to, calculating the temperature specifically identified by the sensor 20 based on the feedback signal. The control chip 30 may be, but is not limited to, storing a set temperature threshold. When the temperature of the display panel 12 identified by the sensor 20 is higher than the temperature threshold, the control chip 30 may be, but is not limited to, outputting a first control signal and controlling the infrared light component 14 to be turned off. When the temperature of the display panel 12 identified by the sensor 20 is less than or equal to the temperature threshold, the control chip 30 may be, but is not limited to, outputting a second control signal and controlling the infrared light component 14 to be turned on. When the infrared light component 14 is turned on, it emits infrared light to the display panel 12 and heats the display panel 12, thereby ensuring the normal operation of the display panel 12.

[0091] Please refer again Fig.12 The sensor 20 detects the temperature of the display panel 12. When the temperature of the display panel 12 is lower than a first preset value, the sensor 20 transmits a first feedback signal to the control chip 30. The control chip 30 receives the first feedback signal and drives the infrared light component 14 to turn on. The infrared light emitted by the infrared light component 14 heats the display panel 12. When the temperature of the display panel 12 is greater than or equal to the first preset value, the sensor 20 transmits a second feedback signal to the control chip 30. The control chip 30 receives the second feedback signal and drives the infrared light component 14 to turn off.

[0092] In the third embodiment of the present application, the first preset value may be, but is not limited to, a preset temperature threshold, and the preset temperature threshold may be, but is not limited to, 5°C, 0°C, -5°C, -10°C, -20°C, etc. It can be understood that the preset temperature threshold may also be adjusted according to different actual application scenarios of the electronic device 1 and experimental simulation calculations, and the specific value of the preset temperature threshold should not be a limitation on the electronic device 1 provided in this embodiment.

[0093] When the sensor 20 detects that the temperature of the display panel 12 is lower than the first preset value, the sensor 20 may be, but is not limited to, transmitting a first feedback signal to the control chip 30, and the control chip 30 may be, but is not limited to, calculating the temperature specifically identified by the sensor 20 based on the feedback signal. The control chip 30 may be, but is not limited to, storing a set temperature threshold. When the temperature of the display panel 12 identified by the sensor 20 is lower than the first preset value, the control chip 30 may be, but is not limited to, outputting a first control signal and controlling the infrared light component 14 to turn on.

[0094] The sensor 20 may be, but is not limited to, detecting the temperature of the display panel 12 again and transmitting a second feedback signal to the control chip 30. The control chip 30 may determine whether the temperature of the display panel 12 is greater than or equal to the first preset value based on the second feedback signal. When the control chip 30 determines that the temperature of the display panel 12 is still lower than the first preset value, the control chip 30 may be, but is not limited to, not sending a control signal, that is, keeping the infrared light component 14 in the on state, and the control chip 30 controls the sensor 20 to repeat the detection operation of the temperature of the display panel 12 again until the control chip 30 determines that the temperature of the display panel 12 is greater than the first preset value.

[0095] When the control chip 30 determines that the temperature of the display panel 12 is greater than the first preset value, the control chip 30 outputs a second control signal and controls the infrared light component 14 to be turned off, thereby achieving precise control of the operating temperature of the display panel 12 and ensuring the normal operation of the display panel 12.

[0096] In the fourth embodiment of the present application, when the infrared light component 14 is turned on, the sensor 20 may be, but not limited to, detecting the temperature of the display panel 12 in real time and obtaining a third feedback signal, the control chip 30 may be, but not limited to, calculating the temperature rise rate of the display panel 12 according to the third feedback signal, and the control chip 30 may be, but not limited to, storing a second preset value, and the second preset value may be, but not limited to, a temperature rise rate threshold. When the temperature rise rate of the display panel 12 is less than the second preset value, the control chip 30 may output a third control signal and control the infrared light component 14 to increase the working power. When the temperature rise rate of the display panel 12 is greater than the second preset value, the control chip 30 may output a fourth control signal and control the infrared light component 14 to reduce the working power.

[0097] In the fifth embodiment of the present application, when the infrared light component 14 is turned on, the sensor 20 can be but is not limited to detecting the temperature of the display panel 12 in real time and obtaining a fourth feedback signal, the control chip 30 can be but is not limited to calculating the temperature of the display panel 12 according to the fourth feedback signal, the control chip 30 can be but is not limited to storing a third preset value, and the third preset value can be but is not limited to including a first temperature range, a second temperature range,..., an Nth temperature range, etc. When the temperature of the display panel 12 is in different temperature ranges, the control chip 30 can output a fifth control signal and control the infrared light component 14 to operate at different powers. For example, when the temperature of the display panel 12 is in a lower temperature range, the infrared light component 14 can be controlled to operate at a higher power. When the temperature of the display panel 12 is in a higher temperature range, the infrared light component 14 can be controlled to operate at a lower power. This avoids the potential safety hazard caused by the display panel 12 continuing to heat up after the infrared light component 14 is turned off, further realizes precise control of the operating temperature of the display panel 12, and ensures the safe and normal operation of the display panel 12 and the electronic device 1.

[0098] Mentioning "embodiment" and "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, if there is no contradiction between them.

[0099] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the above preferred implementation modes, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: A display device, the display device comprising a back plate, a display panel, a backlight module and an infrared light component; the display panel is carried on the back plate, the display panel comprises a liquid crystal layer; the backlight module comprises a light guide plate and a visible light component, the light guide plate has a light exiting surface, a first light incident surface and a second light incident surface, the first light incident surface is connected to the light exiting surface in a bending manner or is arranged opposite to the light exiting surface, the second light incident surface is connected to the light exiting surface in a bending manner, the visible light component is arranged corresponding to the first light incident surface, the visible light emitted by the visible light component is incident into the light guide plate via the first light incident surface, and is emitted from the light exiting surface to the liquid crystal layer of the display panel; the infrared light component is arranged corresponding to the second light incident surface, the infrared light emitted by the infrared light component is incident into the light guide plate via the second light incident surface, and is emitted from the light exiting surface to the liquid crystal layer of the display panel; A sensor, the sensor is used to detect the temperature of the display panel and obtain a feedback signal; and A control chip, wherein the control chip is electrically connected to the sensor and is used to receive the feedback signal. The control chip is also electrically connected to the infrared light component and selects whether to turn on the infrared light component according to the feedback signal. When the infrared light component is turned on, it emits infrared light to the display panel and heats the display panel.

2. The electronic device according to claim 1, wherein: The backlight module further comprises an optical film, and the optical film is arranged adjacent to the light emitting surface of the light guide plate; The back panel includes a main body and a frame portion, the main body has a first inner surface adjacent to the light emitting surface, the frame has a second inner surface bent and connected to the first inner surface, the second inner surface faces the second light incident surface, and the frame also has a groove with an opening located on the second inner surface, the groove is used to accommodate the infrared light component.

3. The electronic device according to claim 2, characterized in that: The first light incident surface is connected to the light emitting surface by bending, and the first light incident surface is arranged opposite to the second light incident surface; The frame portion further comprises a bearing surface, the bearing surface is connected to the second inner surface by bending, the bearing surface bears the display panel, and the opening of the groove is at least partially arranged corresponding to the peripheral side surface of the optical film.

4. The electronic device according to claim 2, characterized in that: The first light incident surface and the light emitting surface are arranged opposite to each other, and the first light incident surface is connected to the second light incident surface by bending; The frame portion also has a bearing surface, which includes a first bearing surface and a second bearing surface. The first bearing surface is adjacent to and bears the display panel compared to the second bearing surface, and the second bearing surface is away from the outer periphery of the back plate compared to the first bearing surface. The second bearing surface bears the optical film, and the second bearing surface is connected to the second inner surface by a bend.

5. The electronic device according to claim 2, characterized in that: The display device further includes a prism bar and a diffusion bar, wherein the prism bar is disposed on a side of the infrared light component adjacent to the second light incident surface, and the prism bar is used to converge the infrared light emitted by the infrared light component; The diffusion strip is disposed on a side of the prism strip adjacent to the second light incident surface, and the diffusion strip is used for uniformly diffusing the infrared light emitted by the infrared light component.

6. The electronic device according to claim 2, characterized in that: The infrared light assembly comprises a substrate and an infrared light emitting unit, the infrared light emitting unit has an infrared light emitting surface, the substrate has a receiving port and a diffusion port, the receiving port is used to receive the infrared light emitting unit, the diffusion port is used to transmit the infrared light emitted by the infrared light emitting unit, the diffusion port has a first end face and a second end face that are arranged opposite to each other, the first end face is arranged adjacent to the infrared light emitting unit, the first end face is at least partially opposite to the second end face, the second end face is arranged on a side of the first end face away from the infrared light emitting unit, and the second end face is at least partially opposite to the second light incident surface of the light guide plate; The first end face has a size range D1, the second end face has a size range D2, and the size range D1 of the first end face and the size range D2 of the second end face satisfy: D1≤D2.

7. The electronic device according to claim 6, characterized in that: A spacing range H1 is defined between the diffusion strip and the second light incident surface, and the spacing range H1 satisfies: 0.1≤H1≤0.3 mm.

8. The electronic device according to claim 2, characterized in that: The groove has a depth range H2, the back plate has a thickness range H3, and the depth range H2 of the groove and the thickness range H3 of the back plate satisfy: H2≤0.5×H3.

9. The electronic device according to claim 1, wherein: The sensor detects the temperature of the display panel. When the temperature of the display panel is lower than a first preset value, the sensor transmits a first feedback signal to the control chip. The control chip receives the first feedback signal and drives the infrared light component to turn on. The infrared light emitted by the infrared light component heats the display panel. When the temperature of the display panel is greater than or equal to the first preset value, the sensor transmits a second feedback signal to the control chip. The control chip receives the second feedback signal and drives the infrared light component to turn off.

Images