CN116560140A - Display device and electronic apparatus - Google Patents
Display device and electronic apparatus Download PDFInfo
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- CN116560140A CN116560140A CN202310326299.9A CN202310326299A CN116560140A CN 116560140 A CN116560140 A CN 116560140A CN 202310326299 A CN202310326299 A CN 202310326299A CN 116560140 A CN116560140 A CN 116560140A
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- infrared light
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 35
- 238000005452 bending Methods 0.000 claims abstract description 27
- 238000009792 diffusion process Methods 0.000 claims description 29
- 239000012788 optical film Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0033—Heating devices using lamps
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application provides a display device and electronic equipment, the display device includes: a back plate; the display panel is supported on the backboard and comprises a liquid crystal layer; the backlight module comprises a light guide plate and a visible light component, wherein the light guide plate is provided with a light emitting surface, a first light incident surface and a second light incident surface, the first light incident surface is connected with the light emitting surface in a bending way or is arranged opposite to the light emitting surface, the second light incident surface is connected with the light emitting surface in a bending way, the visible light component is arranged corresponding to the first light incident surface, and visible light emitted by the visible light component enters the light guide plate through the first light incident surface and is emitted to a liquid crystal layer of the display panel through the light emitting surface; the infrared light component is arranged corresponding to the second light incident surface, 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 emergent surface, and the infrared light can heat the liquid crystal layer, so that the display device and the electronic equipment can still work normally under a low-temperature environment.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and an electronic apparatus.
Background
Various electronic products are increasingly popular in various fields such as office work, scientific research, medical treatment, vehicle-mounted and aerospace, but under severe conditions, particularly in the environment of minus tens of DEG C in winter in the north, the self-transmission of liquid crystal in a display screen of the electronic product is seriously affected (the normal working temperature range of liquid crystal is usually 0-50 ℃), so that the electronic equipment cannot be started, the display screen is not bright, or the display screen is abnormal, for example, the display screen is easy to have the problems of long response time, afterimage, contrast and other optical losses under the influence of low temperature.
Disclosure of Invention
In a first aspect, the present invention provides a display device including:
a back plate;
the display panel is borne on the back plate and comprises a liquid crystal layer;
the backlight module comprises a light guide plate and a visible light component, wherein the light guide plate is provided with a light emitting surface, a first light incident surface and a second light incident surface, the first light incident surface is connected with the light emitting surface in a bending way or is arranged opposite to the light emitting surface, the second light incident surface is connected with the light emitting surface in a bending way, the visible light component is arranged corresponding to the first light incident surface, and the visible light emitted by the visible light component enters the light guide plate through the first light incident surface and is emitted to a liquid crystal layer of the display panel through the light emitting surface;
The infrared light component is arranged corresponding to the second light incident surface, and infrared light emitted by the infrared light component enters the light guide plate through the second light incident surface and exits to the liquid crystal layer of the display panel through the light emergent surface.
The backlight module further comprises an optical film, wherein the optical film is arranged adjacent to the light emitting surface of the light guide plate;
the back plate comprises a main body part and a frame part, wherein the main body part is provided with a first inner surface adjacent to the light emitting surface, the frame part is provided with a second inner surface connected with the first inner surface in a bending way, the second inner surface faces the second light emitting surface, the frame part is also provided with a groove with an opening positioned on the second inner surface, and the groove is used for accommodating the infrared light component.
The first light incident surface is connected with the light emergent surface in a bending way, and the first light incident surface and the second light incident surface are arranged in a back-to-back way;
the frame part is also provided with a bearing surface, the bearing surface is connected with the second inner surface in a bending way, 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.
The first light incident surface and the second light incident surface are arranged opposite to each other, and the first light incident surface and the second light incident surface are connected in a bending way;
the frame part is also provided with a bearing surface, the bearing surface comprises a first bearing surface and a second bearing surface, the first bearing surface is adjacent to the second bearing surface and bears the display panel, the second bearing surface is opposite to the first bearing surface and deviates from the outer periphery of the backboard, the second bearing surface bears the optical film, and the second bearing surface is connected with the second inner surface in a bending way.
The display device further comprises a prism strip and a diffusion strip, wherein the prism strip is arranged on one side, adjacent to the second light inlet surface, of the infrared light component, and the prism strip is used for converging infrared light rays emitted by the infrared light component;
the diffusion strip is arranged on one side of the prism strip adjacent to the second light incident surface and is used for uniformly diffusing infrared light emitted by the infrared light component.
The infrared light assembly comprises a substrate and an infrared light emitting unit, the infrared light emitting unit is provided with an infrared light emitting surface, the substrate is provided with a containing opening and a diffusion opening, the containing opening is used for containing the infrared light emitting unit, the diffusion opening is used for transmitting infrared light emitted by the infrared light emitting unit, the diffusion opening is provided with a first end face and a second end face which are arranged in a back-to-back mode, the first end face is adjacent to the infrared light emitting unit, at least part of the first end face is opposite to the second end face, the second end face is arranged on one side, away from the infrared light emitting unit, of the first end face, and at least part of the second end face is opposite to the second light emitting surface of the light guide plate;
Wherein the first end face has a size range D 1 The second end face has a dimension range D 2 The dimension range D of the first end face 1 Dimension range D with the second end face 2 The method meets the following conditions: d (D) 1 ≤D 2 。
Wherein a distance range H is arranged between the diffusion strip and the second light incident surface 1 The distance range H 1 The method meets the following conditions: h is more than or equal to 0.1 1 ≤0.3mm。
Wherein the groove has a depth range H 2 The back plate has a thickness range H 3 Depth range H of the groove 2 Thickness range H with the back plate 3 The method meets the following conditions: h 2 ≤0.5×H 3 。
In a second aspect, the present invention also provides an electronic device, including:
the display device;
the sensor is used for detecting the temperature of the display panel and obtaining a feedback signal; and
The control chip is electrically connected to the sensor and used for receiving the feedback signal, the control chip is further electrically connected to the infrared light component and selects whether to start the infrared light component according to the feedback signal, and infrared light is emitted to the display panel and heated when the infrared light component is started.
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 be started, the infrared light emitted by the infrared light component heats the display panel, and when the temperature of the display panel is higher than or equal to the first preset value, the sensor transmits a second feedback signal to the control chip, and the control chip receives the second feedback signal and drives the infrared light component to be closed.
The display device provided by the embodiment of the application is provided with an infrared light component, infrared light emitted by the infrared light component enters the light guide plate through the second light incident surface, exits to the liquid crystal layer of the display panel through the light emergent surface, and is used for heating the liquid crystal layer of the display panel. And the light guide plate can be with infrared light even diffusion extremely display panel, when promoting the light utilization efficiency of infrared light, can make display device under the setting of limited infrared light subassembly, to the liquid crystal layer has even, efficient heating effect, and then makes display device with electronic equipment still can normal operating under low temperature environment.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a display device according to an embodiment of the present application;
FIG. 2 is a schematic structural view of an infrared light assembly of the cross-section of the display device provided in FIG. 1 along line A-A;
FIG. 3 is a schematic view of the visible light assembly of the cross section of the display device provided in FIG. 1 along line A-A;
FIG. 4 is a schematic view of a propagation path of infrared rays emitted from an infrared light assembly according to a first embodiment of the present application;
FIG. 5 is a schematic view showing a cross section along line A-A of a display device according to a second embodiment of the present application;
FIG. 6 is a schematic diagram of a propagation path of infrared light emitted from an infrared light assembly according to a second embodiment of the present application;
fig. 7 is a partially enlarged schematic view of a display device of the first embodiment of the present application;
FIG. 8 is an enlarged schematic view of a portion of the display device provided in FIG. 1;
fig. 9 is a partially enlarged schematic view of a display device of a second embodiment of the present application;
FIG. 10 is a schematic view showing a partial structure of a cross section of a display device according to an embodiment of the present application along the line A-A;
FIG. 11 is a schematic view showing a partial structure of a cross section of a display device according to another embodiment of the present application along the line A-A;
fig. 12 is a schematic diagram of an electronic device according to an embodiment of the present application.
Reference numerals illustrate:
1-electronic equipment, 10-display device, 20-sensor, 30-control chip, 11-backboard, 12-display panel, 13-backlight module, 14-infrared module, 15-prism strip, 16-diffusion strip, 111-main body, 112-frame, 121-liquid crystal layer, 131-light guide plate, 132-visible light module, 133-optical film, 141-substrate, 142-infrared light emitting unit, 151-first sub-prism strip, 152-second sub-prism 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 mesh point, 1315-second mesh point, 112 a-first bearing surface, 112 b-second bearing surface, 141 a-first end surface, 141 b-second end surface.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, fig. 1 is a schematic diagram of a display device according to an embodiment of the present application, fig. 2 is a schematic diagram of an infrared light component of a cross section along A-A of the display device provided in fig. 1, fig. 3 is a schematic diagram of a visible light component of a cross section along A-A of the display device provided in fig. 1, fig. 4 is a schematic diagram of a propagation path of an infrared light emitted from the infrared light component according to a first embodiment of the present application, fig. 5 is a schematic diagram of a cross section along A-A of a display device according to a second embodiment of the present application, and fig. 6 is a schematic diagram of a propagation path of an infrared light emitted from the infrared light component according to a second embodiment of the present application. The application provides a display device 10, wherein the display device 10 comprises 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 bent and connected with the light emitting surface 1131 or is opposite to the light emitting surface 1131, the second light incident surface 1133 is bent and connected with the light emitting surface 1131, the visible light component 132 is disposed corresponding to the first light incident surface 1132, and the visible light emitted by the visible light component 132 is incident into the light guide plate 131 through the first light incident surface 1132 and is emitted to the liquid crystal layer 121 of the display panel 12 from the light emitting surface 1131. The infrared light component 14 is disposed corresponding to the second light incident surface 1133, and the infrared light emitted from the infrared light component 14 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.
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), 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 is understood that the display device 10 may be a display device 10 with other structures.
The display panel 12 is carried on the back plate 11. The display panel 12 and the back plate 11 may be, but are not limited to, fixed by Foam Tape (Foam Tape). The display panel 12 may be, but is not limited to being, a liquid crystal layer 121, a substrate 141, a cover plate, and the like. The liquid crystal layer 121 rotates under the control of an electric field to cause the display panel 12 to perform picture display.
The backlight module 13 may include, but is not limited to, a light guide plate 131, a visible light assembly 132, an optical film 133, a reflective plate, and the like. The light guide plate 131 may include, but is not limited to, a light-emitting surface 1131, a first light-incident surface 1132, a second light-incident surface 1133, and the like. The light emitting surface 1131 may be, but is not limited to, a front projection of the display panel 12 on the back plate 11, in other words, a front projection of the display panel 12 on the back plate 11 may be, but is not limited to, a front projection of the light guiding plate 131. The first light incident surface 1132 may be, but is not limited to, a plane, a curved surface, or other irregular surface. The second light incident surface 1133 may be, but is not limited to, a plane, a curved surface, or other irregular surface. The second light incident surface 1133 may be, but is not limited to, connected to the light emergent surface 1131 in a bending manner, and the bending angle of the second light incident surface 1133 and the light emergent surface 1131 may be, but is not limited to, 90 ° or substantially 90 °, and it is understood that the bending angle of the second light incident surface 1133 and the light emergent surface 1131 may be other angles.
The visible light assembly 132 may be, but is not limited to being, composed of light emitting diodes (Light Emitting Diode, LEDs), or sub-millimeter light emitting diodes (Mini Light Emitting Diode, mini LEDs), or Micro light emitting diodes (Micro Light Emitting Diode, micro LEDs), it being understood that the visible light assembly 132 may also be composed of other types of light emitting elements. The visible light component 132 is disposed corresponding to the first light incident surface 1132, and specifically, the light emergent surface 1131 of the visible light component 132 may be, but is not limited to, a part of the first light incident surface 1132 facing, or all of the first light incident surface 1132 facing, the light guide plate 131. The visible light component 132 may emit visible light, which may be, but is not limited to, part of, or all of the visible light is incident into the light guide plate 131 through the first light incident surface 1132, and is emitted to the liquid crystal layer 121 of the display panel 12 from the light emergent surface 1131 of the light guide plate 131, so as to provide a visible light source for the display panel 12.
The infrared light assembly 14 may be configured to emit infrared light. The infrared light assembly 14 may include, but is not limited to, a drive board and an infrared light unit 142. The driving board may be, but not limited to, a circuit configured to drive the infrared light emitting unit 142 to operate, and is used to 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 elements capable of emitting infrared light.
The infrared light component 14 is disposed corresponding to the second light incident surface 1133, and specifically, the light emitting surface of the infrared light component 14 may be, but is not limited to being, partially positive to, or fully positive to, the second light incident surface 1133. The infrared light emitted from the infrared light component 14 may be, but is not limited to, partially or completely incident into the light guide plate 131 through the second light incident surface 1133 and is emitted through the light emergent surface1131 to the liquid crystal layer 121 of the display panel 12. The infrared light may heat the liquid crystal layer 121 of the display panel 12. Specifically, the infrared light is also called infrared radiation, is electromagnetic wave in infrared band with wavelength range of 0.76-1000 μm between visible light and microwave, is invisible light with frequency lower than red light, has obvious thermal effect, and can heat surrounding objects. When the ambient temperature is too low, the self-transmission of liquid crystals in the liquid crystal layer 121 is severely affected, and the wave number of radiation in the infrared light is 2700cm -1 To 3100cm -1 (wavelength 2325nm to 2026 nm), is a strong absorption band of the liquid crystal layer 121. The infrared light assembly 14 of the present embodiment may be, but is not limited to, an outgoing radiation wave number of 2700cm -1 To 3100cm -1 (wavelength 2325 nm-2026 nm) and is used for heating the liquid crystal layer 121 of the display panel 12, so that the display panel 12 can work normally under a low-temperature environment.
The backlight module 13 may be, but is not limited to, a direct type or a side-in type backlight module 13. In the first embodiment of the present application, the backlight module 13 is taken as an example of the side-entering type backlight module 13. Specifically, the first light incident surface 1132 may be, but is not limited to be, bent and connected to the light emergent surface 1131. The visible light component 132 may be, but is not limited to being, disposed at an 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 exits from the light exit surface 1131 of the light guide plate 131, so as to form a surface light source for providing to the display panel 12. The light emitted from the infrared light assembly 14 is diffused by the light guide plate 131 and then exits from the light exit surface 1131 of the light guide plate 131, so as to heat the liquid crystal layer 121 of the display panel 12. The side-entry backlight module 13 has low manufacturing cost and can manufacture a lighter and thinner display device 10.
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 disposed opposite to the light emitting surface 1131, and the visible light component 132 is disposed corresponding to the first light incident surface 1132, in other words, the visible light component 132 may be, but is not limited to, disposed on a 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. Compared with the conventional direct type backlight module 13, the direct type backlight module 13 provided in the embodiment of the present application increases the design of the light guide plate 131, so that the infrared light is uniformly diffused to the display panel 12, and the light utilization efficiency of the infrared light is improved, and meanwhile, the infrared light has a uniform heating effect on the liquid crystal layer 121. And 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, has good optical performance while reducing the cost, and can shorten the distance between the visible light lamp beads and the display panel 12, so that the display device 10 is lighter and thinner.
Further, a side of the first light incident surface 1132 of the light guide plate 131 adjacent to the display panel 12 may be provided with first dots 1314. The first dots 1314 may be, but not limited to, only allow light waves with a wavelength range of 390nm to 780nm to pass through, i.e., the first dots 1314 allow the visible light to pass through, and reflect or scatter the infrared light emitted to the first dots 1314, so as to reduce the emission of the infrared light incident into the light guide plate 131 from the first light incident surface 1132, thereby reducing the waste of the infrared light, and guaranteeing the heating effect of the infrared light on the display panel 12.
Preferably, the number of the first dots 1314 is plural, and the plurality of first dots 1314 may be, but not limited to, sparsely arranged at a position adjacent to the visible light component 132, densely arranged at a position far away from the visible light component 132, that is, a smaller number of first dots 1314 are arranged at a position adjacent to the visible light component 132, and a larger number of first dots 1314 are arranged at a position far away from the visible light component 132, thereby ensuring that the visible light can be sufficiently incident on the light guide plate 131, and further ensuring the display quality of the display device 10.
The second light incident surface 1133 of the light guide plate 131 adjacent to the side of the visible light component 132 may be, but is not limited to be, provided with second dots 1315. The second 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 dots 1315 allow the infrared light to pass through, and reflect or scatter the visible light emitted to the second dots 1315, so as to reduce the emission of the visible light incident into the light guide plate 131 from the second light incident surface 1133, thereby reducing the waste of the visible light and guaranteeing the display quality of the display device 10.
Preferably, the number of the second dots 1315 is plural, and the plurality of second dots 1315 may be, but not limited to, sparsely arranged at a position adjacent to the infrared light assembly 14, densely arranged at a position far away from the infrared light assembly 14, that is, a smaller number of second dots 1315 are arranged at a position adjacent to the infrared light assembly 14, and a larger number of second dots 1315 are arranged at a position far away from the infrared light assembly 14, so that the infrared light can be sufficiently injected into the light guide plate 131, and the heating effect of the infrared light on the display panel 12 is ensured.
In summary, the display device 10 according to the embodiment of the present application is provided with the infrared light component 14, and the infrared light component 14 may be, but is not limited to, an outgoing radiation wave number of 2700cm -1 To 3100cm -1 (wavelength 2325nm to 2026 nm) which is incident into the light guide plate 131 through the second light incident surface 1133, is emitted to the liquid crystal layer 121 of the display panel 12 through the light emitting surface 1131, and is used for heating the liquid crystal layer 121 of the display panel 12. The light guide plate 131 can uniformly diffuse the infrared light to the display panel 12, so that the light utilization efficiency of the infrared light is improved, and the display device 10 can be provided with limited infrared light components 14Under the arrangement, the liquid crystal layer 121 has a uniform and efficient heating effect, so that the display device 10 can still work and operate normally in a low-temperature environment.
Please refer to fig. 2 and fig. 5 again. The backlight module 13 further includes an optical film 133, where the optical film 133 is disposed adjacent to the light emitting surface 1131 of the light guide plate 131. The back plate 11 includes a main body 111 and a frame 112, the main body 111 has a first inner surface 1111 adjacent to the light-emitting surface 1131, the frame 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-emitting surface 1133, and the frame 112 further has a groove 1122 with an opening located on the second inner surface 1121, and the groove 1122 is used for accommodating the infrared light component 14.
The optical film 133 may be, but is not limited to, disposed on the light-emitting surface 1131 of the light guide plate 131, so that the light incident on the display panel 12 is more uniform, and the display quality is improved.
The main body 111 may be, but is not limited to being, disposed with respect 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 being, integrally formed with the body portion 111. The frame 112 has a second inner surface 1121 bent and connected to the first inner surface 1111, and the bending angle of the second inner surface 1121 and the first inner surface 1111 may be, but not limited to, 90 ° or substantially 90 °.
In the first embodiment of the present application, the main body 111 may be, but is not limited to, used for carrying the light guide plate 131 and the optical film 133. Specifically, the light guide plate 131 may be, but is not limited to be, a first inner surface 1111 provided on the main body 111. The optical film 133 is supported 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 at the opening of the groove 1122, so that the infrared light may be more incident into the light guide plate 131 and the optical film 133, and the light utilization efficiency of the infrared light may be improved.
In the second embodiment of the present application, the main body 111 may be, but is not limited to, a light guide plate 131 for carrying the visible light assembly 132. Specifically, the visible light assembly 132 may be, but is not limited to being, disposed on the first inner surface 1111 of the main body 111, the light guide plate 131 may be, but is not limited to being, supported on the first inner surface 1111 of the main body 111 by a pillar, and the light guide plate 131 may be, but is not limited to being, disposed at a distance from the visible light assembly 132, so as to prevent the visible light assembly 132 from being damaged by the light guide plate 131 pressing the visible light assembly 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, so as to reduce the gravity acting on the light guide plate 131 when the optical film 133 is pressed, and further prevent the deformation of the light guide plate 131 and the extrusion of the visible light assembly 132.
The second inner surface 1121 faces the second light incident surface 1133, and specifically, a plane on which the second inner surface 1121 is located may be, but is not limited to being partially opposite to, or opposite to, the second light incident surface 1133. The frame 112 further has a groove 1122 with an opening on the second inner surface 1121. Specifically, the opening of the groove 1122 may be, but is not limited to, partially right above, or right above, the second light incident surface 1133, so that the infrared light may be more fully incident on the light guide plate 131. The number of grooves 1122 may be, but is not limited to, one, or two, or more. The shape of the groove 1122 may be, but is not limited to, horn-shaped, or approximately horn-shaped, so as to facilitate the diffusion of the infrared light to the light guide plate 131.
The infrared light assembly 14 is disposed in the groove 1122 of the frame 112, and compared with the case where the frame 112 is not provided with the groove 1122, and the infrared light assembly 14 is directly attached to the side wall of the frame 112, the infrared light assembly 14 is accommodated in the groove 1122 of the frame 112, so that the display area of the display device 10 can be enlarged, the non-display area of the display device 10 can be reduced, and the narrow frame design requirement of the display device 10 can be further satisfied. Compared with the infrared light assembly 14 protruding from the frame portion 112, the infrared light assembly 14 is accommodated in the groove 1122 of the frame portion 112, and the infrared light emitted from the infrared light assembly 14 can be directly emitted from the plane of the second inner surface 1121 of the back plate 11, 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 receive the infrared light assembly 14, so that the infrared light emitted from the infrared light assembly 14 can be more incident into the light guide plate 131, thereby reducing the waste of the infrared light and improving the utilization efficiency of the infrared light.
Referring to fig. 2, 3, 7 and 8, fig. 7 is a partially enlarged schematic view of a display device according to a first embodiment of the present application, and fig. 8 is a partially enlarged schematic view of the display device provided in fig. 1. The first light incident surface 1132 is connected to the light emergent surface 1131 in a bending manner, and the first light incident surface 1132 and the second light incident surface 1133 are disposed opposite to each other. The frame portion 112 further has a carrying surface 1123, the carrying surface 1123 is connected to the second inner surface 1121 in a bending manner, the carrying surface 1123 carries the display panel 12, and the opening of the groove 1122 is at least partially disposed corresponding to the peripheral side surface of the optical film 133.
In the first embodiment of the present application, the first light incident surface 1132 may be, but is not limited to be, bent and connected to the light emergent surface 1131. The first light incident surface 1132 may be, but is not limited to, disposed 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 bending and connecting with the light emitting surface 1131, the visible light component 132 and the infrared light component 14 may be, but is not limited to, disposed adjacent to the peripheral side surface, and the visible light component 132 and the infrared light component 14 may be disposed on opposite sides of the light guide plate 131. It will be appreciated that, in other embodiments of the present application, the display device 10 may also be provided with the infrared light assembly 14 on other peripheral sides of the light guide plate 131, so as to enhance the heating effect on the display panel 12.
The frame 112 further has a bearing surface 1123 that is bent and connected to the second inner surface 1121. The bearing surface 1123 may be bent at an angle of, but not limited to, 90 ° or substantially 90 ° with respect to the second inner surface 1121. In the first embodiment of the present application, the carrying surface 1123 may be, but is not limited to, for carrying the display panel 12.
The openings of the grooves 1122 may be, but are not limited to, partially or completely disposed corresponding to the peripheral side surfaces of the optical film 133. In other words, the opening of the groove 1122 may be, but is not limited to, partially or completely disposed on the peripheral side surface of the optical film 133, so that the infrared light may be more incident into the light guide plate 131 and the optical film 133, the light utilization efficiency of the infrared light is improved, and the heating effect of the infrared light component 14 on the display panel 12 is further enhanced, so that the display panel 12 may be heated up rapidly.
Referring to fig. 5, 6 and 9, fig. 9 is a partially enlarged schematic view of a display device according to a second embodiment of the present application. The first light incident surface 1132 is disposed opposite to the light emergent surface 1131, and the first light incident surface 1132 is bent and connected with the second light incident surface 1133. The frame portion 112 further has a carrying surface 1123, the carrying surface 1123 includes a first carrying surface 112a and a second carrying surface 112b, the first carrying surface 112a is adjacent to and carries the display panel 12 compared to the second carrying surface 112b, the second carrying surface 112b is opposite to the first carrying surface 112a and faces away from the outer periphery of the back plate 11, the second carrying surface 112b carries the optical film 133, and the second carrying surface 112b is bending-connected with the second inner surface 1121.
In the second embodiment of the present application, the first light incident surface 1132 may be, but is not limited to be, disposed opposite to the light emergent surface 1131. In other words, the visible light component 132 may be, but is not limited to be, disposed on a side of the light guide plate 131 facing away from the light emitting surface 1131. The first light incident surface 1132 may be, but is not limited to, connected to the second light incident surface 1133 in a bending manner, and the bending angle of the first light incident surface 1132 and the second light incident surface 1133 may be, but is not limited to, 90 ° or substantially 90 °.
The first bearing surface 112a and the second bearing surface 112b may be, but are not limited to, connected by a connecting surface bending. The first bearing surface 112a may be, but is not limited to, disposed adjacent to the display panel 12 compared to the second bearing surface 112b, i.e., the first bearing surface 112a is spaced from the display panel 12 by a distance less than the second bearing surface 112b is spaced from the display panel 12.
The second bearing surface 112b may be, but is not limited to, a distance away from the outer periphery of the back plate 11 compared to the first bearing surface 112a, i.e. the distance between the first bearing surface 112a and the outer periphery of the back plate 11 is smaller than the 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 being, bent to connect with the second inner surface 1121, and the bending angle of the second bearing surface 112b and the second inner surface 1121 may be, but is not limited to being, 90 ° or substantially 90 °.
The first carrying surface 112a may be used to carry the display panel 12. The second bearing surface 112b may be used to bear the optical film 133, so as to reduce the gravity effect on the light guide plate 131 when the optical film 133 is pressed, and further prevent the light guide plate 131 from deforming to squeeze the visible light component 132, thereby avoiding the damage to the visible light component 132 and ensuring the optical quality of the display device 10.
Please refer to fig. 2 again. The display device 10 further includes a prism strip 15 and a diffusion strip 16, the prism strip 15 is disposed on a side of the infrared light assembly 14 adjacent to the second light incident surface 1133, and the prism strip 15 is used for converging the infrared light emitted from the infrared light assembly 14. The diffusion strip 16 is disposed on a side of the prism strip 15 adjacent to the second light incident surface 1133, and the diffusion strip 16 is used for uniformly diffusing the infrared light emitted from the infrared light assembly 14.
The prism strips 15 may be, but are not limited to, used to adjust the exit angle of the infrared light. The prism strip 15 is disposed on a side of the infrared light assembly 14 adjacent to the second light incident surface 1133. The prism strips 15 may be, but not limited to, disposed in an opening covering the grooves 1122, and the grooves 1122 are configured to accommodate the infrared light components 14, so that the infrared light emitted from the infrared light components 14 can be incident into the light guide plate 131 again through adjustment of the prism strips 15, thereby greatly improving the utilization efficiency of the infrared light.
The prism bars 15 may include, but are 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 bars 151 may be, but are not limited to, prism bars 15 having a 0 ° gauge, and the first sub-prism bars 151 may be, but are not limited to, disposed adjacent to the infrared light assembly 14. The second sub-prism bars 152 may be, but are not limited to, prism bars 15 with a specification of 90 °, and the second sub-prism bars 152 may be, but are not limited to, disposed adjacent to the light guide plate 131, so as to converge infrared light emitted from the infrared light assembly 14, so that more infrared light can be incident on the light guide plate 131.
The diffusion strip 16 is disposed on a side of the prism strip 15 adjacent to the second light incident surface 1133 of the light guide plate 131. The diffuser bar 16 may be, but is not limited to being, configured to fit the prism bar 15. The diffusion strips 16 may be used to uniformly diffuse the infrared light transmitted through the prism strips 15, so that the infrared light may be uniformly diffused to the light guide plate 131, thereby greatly improving the utilization efficiency of the infrared light, and facilitating the rapid temperature rise of the display panel 12.
Referring to fig. 10, fig. 10 is a schematic view of a portion of a cross-section of a display device along A-A line according to an embodiment of the present application. The infrared light assembly 14 includes a substrate 141 and an infrared light emitting unit 142, the infrared light emitting unit 142 has an infrared light outgoing surface 1421, the substrate 141 has a receiving opening 1411 and a diffusion opening 1412, the receiving opening 1411 is used for receiving the infrared light emitting unit 142, and the diffusion opening 1412 is used for transmitting lightThe diffusing hole 1412 has a first end surface 141a and a second end surface 141b opposite to each other, the first end surface 141a is adjacent to the infrared light emitting unit 142, the first end surface 141a is at least partially opposite to the second end surface 141b, the second end surface 141b is disposed at a side of the first end surface 141a away from the infrared light emitting unit 142, and the second end surface 141b is at least partially opposite to the second light incident surface 1133 of the light guide plate 131. Wherein the first end surface 141a has a size range D 1 The second end face 141b has a dimension range D 2 The dimension range D of the first end surface 141a 1 Dimensional range D with said second end face 141b 2 The method meets the following conditions: d (D) 1 ≤D 2 。
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 configured to drive the operation of 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 may be, but is not limited to, an infrared lamp bead, or other elements capable of emitting infrared light. The infrared light exit surface 1421 may be used to exit infrared light.
The receiving opening 1411 may be, but is not limited to, for receiving the infrared light emitting unit 142. The diffusion opening 1412 may be in communication with the receiving opening 1411 and may be configured to diffuse the infrared light. The first end surface 141a may be, but is not limited to being, partially opposite, or fully opposite the infrared light exit surface 1421, so that more infrared light may pass through the diffusion 1412. The second end surface 141b may be, but is not limited to, a portion facing, or entirely facing, the second light incident surface 1133 of the light guide plate 131, so that more infrared light may be diffused to the light guide plate 131.
The first end surface 141a has a dimension range D 1 And the size range D 1 May be, but is not limited to, a range of distances between two points at which the first end face 141a is most spaced in a lateral direction, and the first lateral direction may be, but is not limited to, flatIs parallel or substantially parallel to the plane of the first end face 141 a. The second end face 141b has a dimension range D 2 The size range D 2 May be, but is not limited to, a distance between two points at which the second end face 141b is most spaced in a second lateral direction, which may be, but is not limited to, parallel or substantially parallel to a plane in which the second end face 141b lies. Size range D of the first end face 141a 1 May be, but is not limited to, a dimension range D that is less than or equal to the second end face 141b 2 Namely, the following conditions are satisfied: d (D) 1 ≤D 2 . And the first end surface 141a may be, but is not limited to, partially opposite to, or entirely opposite to, the second end surface 141b, so that the diffusing opening 1412 has a horn-shaped or approximately horn-shaped design, so that the infrared light is conveniently diffused, more infrared light can be emitted to the light guide plate 131, the waste of the infrared light is reduced, and uniform and efficient heating of the display panel 12 can be realized under the limited number of the infrared light emitting units 142.
Referring to fig. 11, fig. 11 is a schematic view of a portion of a cross-section of a display device according to another embodiment of the present application along A-A line. The diffusion strip 16 and the second light incident surface 1133 have a distance range H therebetween 1 The distance range H 1 The method meets the following conditions: h is more than or equal to 0.1 1 ≤0.3mm。
The distance range H 1 May be, but is not limited to, a range of distances between two points of the diffusion strip 16 adjacent to a minimum distance between a surface of the second light incident surface 1133 and the second light incident surface 1133. The distance range H 1 May be, but is not limited to, 0.1mm, or 0.15mm, or 0.2mm, or 0.25mm, or 0.3mm, etc., it being understood that the spacing range H 1 Other values are also possible, provided that the spacing range H 1 Satisfies H of 0.1 to less than or equal to 1 And the thickness is less than or equal to 0.3 mm. The distance range H 1 Satisfies H of 0.1 to less than or equal to 1 Not more than 0.3mm, on the one hand, collision between the light guide plate 131 and the diffusion strip 16 when deformation occurs can be avoided, and on the other hand, the diffusion strip 16 can be madeThe infrared light may be entirely diffused to the light guide plate 131, thereby achieving an efficient heating effect on the display panel 12.
Please refer to fig. 11 again. The grooves 1122 have a depth range H 2 The back plate 11 has a thickness range H 3 Depth range H of the groove 1122 2 Thickness range H with the back plate 11 3 The method meets the following conditions: h 2 ≤0.5×H 3 。
The grooves 1122 have a depth range H 2 The depth range H 2 May be, but is not limited to, a range of values for the maximum depth of the grooves 1122 in the longitudinal extension, the backplate 11 having a thickness range H 3 The thickness range H 3 It may be, but is not limited to, a numerical range of the thickness of the back plate 11 in the longitudinal extending direction of the grooves 1122, and it is understood that the back plate 11 may have other thickness ranges at other positions where the grooves 1122 are not provided, and the thickness ranges of the back plate 11 at other positions should not be limited to the display device 10 provided in this embodiment mode.
Depth range H of the groove 1122 2 May be, but not limited to, equal to 0.2 XH 3 Or 0.3 XH 3 Or 0.4 XH 3 、0.5×H 3 Etc., as long as H is satisfied 2 ≤0.5×H 3 And (3) obtaining the product. Depth range H of the groove 1122 2 Thickness range H with the back plate 11 3 The method meets the following conditions: h 2 ≤0.5×H 3 The grooves 1122 have a space for sufficiently diffusing the infrared light, and at the same time, the bearing capacity of the back plate 11 is prevented from being affected by too deep depth of the grooves 1122, and the phenomena of cracking, instability and the like of the back plate 11 are prevented, so that the product yield of the display device 10 is ensured.
Referring to fig. 12, fig. 12 is a schematic diagram of an electronic device according to an embodiment of the present application. The application also provides an electronic device 1, wherein the electronic device 1 comprises the display device 10, the sensor 20, the control chip 30 and the like. The sensor 20 is used for detecting the temperature of the display panel 12 and obtaining a feedback signal. The control chip 30 is electrically connected to the sensor 20 and is configured to receive the feedback signal, the control chip 30 is further electrically connected to the infrared light assembly 14 and selects whether to turn on the infrared light assembly 14 according to the feedback signal, and when the infrared light assembly 14 is turned on, infrared light is emitted to the display panel 12 and heats the display panel 12.
The electronic device 1 may be, but is not limited to, a device having a display function, such as a smart phone, a portable phone, a navigation device, a Television (TV), a car audio body, a laptop, a tablet computer, a Portable Multimedia Player (PMP), a Personal Digital Assistant (PDA), or the like.
The sensor 20 may be, but is not limited to, a sensor for detecting 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 via pins or other temperature detecting components. The sensor 20 may also include any other functional device having temperature sensing, such as a thermistor, etc. It should be understood that the structural composition of the sensor 20 should not be construed as limiting the electronic device 1 provided in this embodiment. The sensor 20 is used for detecting the temperature of the display panel 12 and obtaining a feedback signal. The feedback signal may be, but is not limited to, a current signal, a voltage signal, or the like.
The control chip 30 may be, but is not limited to, electrically connected to the sensor 20 by pins, or a transfer circuit board. The control chip 30 is electrically connected to the sensor 20 and receives the feedback signal, and the control chip 30 may be, but is not limited to, calculating the temperature specifically identified by the sensor 20 according to the feedback signal. The control chip 30 may be, but is not limited to, a temperature threshold value that is stored with a setting. 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 assembly 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 output a second control signal and control the infrared light assembly 14 to be turned on, and when the infrared light assembly 14 is turned on, infrared light is emitted to the display panel 12 and heats the display panel 12, so that normal operation of the display panel 12 is ensured.
Please refer to fig. 12 again. 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 be turned on, the infrared light emitted by the infrared light component 14 heats the display panel 12, and when the temperature of the display panel 12 is higher than or equal to the first preset value, the sensor 20 transmits a second feedback signal to the control chip 30, and the control chip 30 receives the second feedback signal and drives the infrared light component 14 to be turned off.
In a 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 ℃, 0 ℃, or-5 ℃, or-10 ℃, or-20 ℃, etc. It can be understood that the preset temperature threshold may also be adjusted according to different practical application scenarios of the electronic device 1 and experimental simulation calculation, and a specific value of the preset temperature threshold should not be a limitation of the electronic device 1 provided in this embodiment.
When the sensor 20 detects that the temperature of the display panel 12 is lower than the first preset value, the sensor 20 may transmit a first feedback signal to the control chip 30, and the control chip 30 may calculate the temperature specifically identified by the sensor 20 according to the feedback signal. The control chip 30 may be, but is not limited to, a temperature threshold value that is stored with a setting. 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 assembly 14 to be turned on.
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, where the control chip 30 may determine whether the temperature of the display panel 12 is greater than or equal to the first preset value according to the second feedback signal, and 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 send out a control signal, that is, keep the infrared light component 14 in an on state, and the control chip 30 controls the sensor 20 to repeatedly perform the detection operation on 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.
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 assembly 14 to be turned off. Thereby realizing the accurate control of the working temperature of the display panel 12 and ensuring the normal working operation of the display panel 12.
In the fourth embodiment of the present application, when the infrared light assembly 14 is turned on, the sensor 20 may be, but is 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 is not limited to, calculating the temperature rising rate of the display panel 12 according to the third feedback signal, and the control chip 30 may be, but is not limited to, storing a second preset value, which may be, but is not limited to, a temperature rising rate threshold. When the temperature rising rate of the display panel 12 is smaller than the second preset value, the control chip 30 may output a third control signal and control the infrared light assembly 14 to increase the operating power. When the temperature rising 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 assembly 14 to reduce the operating power.
In the fifth embodiment of the present application, when the infrared light assembly 14 is turned on, the sensor 20 may 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 may be, but is not limited to, calculating the temperature of the display panel 12 according to the fourth feedback signal, the control chip 30 may be, but is not limited to, storing a third preset value, and the third preset value may be, but is not limited to, including a first temperature interval, a second temperature interval, …, an nth temperature interval, and the like. When the temperature of the display panel 12 is in different temperature ranges, the control chip 30 may output a fifth control signal and control the infrared light component 14 to operate under different powers, for example, when the temperature of the display panel 12 is in a lower temperature range, the infrared light component 14 may be selectively controlled to operate under higher power, and when the temperature of the display panel 12 is in a higher temperature range, the infrared light component 14 may be selectively controlled to operate under lower power, thereby avoiding the problem of potential safety hazard caused by continuous heating of the display panel 12 after the infrared light component 14 is turned off, further realizing precise control of the operating temperature of the display panel 12, and ensuring safe and normal operation of the display panel 12 and the electronic device 1.
Reference in the present application to "an embodiment," "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the embodiments of the present application may be combined arbitrarily without any conflict with each other to form yet another embodiment without departing from the spirit and scope of the present application.
Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or equivalent replaced without departing from the spirit and scope of the technical solution of the present application.
Claims (10)
1. A display device, characterized in that the display device comprises:
A back plate;
the display panel is borne on the back plate and comprises a liquid crystal layer;
the backlight module comprises a light guide plate and a visible light component, wherein the light guide plate is provided with a light emitting surface, a first light incident surface and a second light incident surface, the first light incident surface is connected with the light emitting surface in a bending way or is arranged opposite to the light emitting surface, the second light incident surface is connected with the light emitting surface in a bending way, the visible light component is arranged corresponding to the first light incident surface, and the visible light emitted by the visible light component enters the light guide plate through the first light incident surface and is emitted to a liquid crystal layer of the display panel through the light emitting surface;
the infrared light component is arranged corresponding to the second light incident surface, and infrared light emitted by the infrared light component enters the light guide plate through the second light incident surface and exits to the liquid crystal layer of the display panel through the light emergent surface.
2. The display device of claim 1, wherein the backlight module further comprises an optical film disposed adjacent to the light-emitting surface of the light guide plate;
the back plate comprises a main body part and a frame part, wherein the main body part is provided with a first inner surface adjacent to the light emitting surface, the frame part is provided with a second inner surface connected with the first inner surface in a bending way, the second inner surface faces the second light emitting surface, the frame part is also provided with a groove with an opening positioned on the second inner surface, and the groove is used for accommodating the infrared light component.
3. The display device according to claim 2, wherein the first light incident surface is connected to the light emergent surface in a bending manner, and the first light incident surface and the second light incident surface are disposed opposite to each other;
the frame part is also provided with a bearing surface, the bearing surface is connected with the second inner surface in a bending way, 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 display device according to claim 2, wherein the first light incident surface is disposed opposite to the light emergent surface, and the first light incident surface is connected to the second light incident surface in a bending manner;
the frame part is also provided with a bearing surface, the bearing surface comprises a first bearing surface and a second bearing surface, the first bearing surface is adjacent to the second bearing surface and bears the display panel, the second bearing surface is opposite to the first bearing surface and deviates from the outer periphery of the backboard, the second bearing surface bears the optical film, and the second bearing surface is connected with the second inner surface in a bending way.
5. The display device of claim 2, further comprising a prism bar and a diffusion bar, wherein the prism bar is disposed on a side of the infrared light assembly adjacent to the second light incident surface, and the prism bar is configured to converge infrared light emitted from the infrared light assembly;
The diffusion strip is arranged on one side of the prism strip adjacent to the second light incident surface and is used for uniformly diffusing infrared light emitted by the infrared light component.
6. The display device of claim 2, wherein the infrared light assembly comprises a substrate and an infrared light emitting unit, the infrared light emitting unit has an infrared light outgoing surface, the substrate has a receiving opening and a diffusion opening, the receiving opening is used for receiving the infrared light emitting unit, the diffusion opening is used for transmitting infrared light emitted by the infrared light emitting unit, the diffusion opening has a first end surface and a second end surface which are oppositely arranged, the first end surface is adjacent to the infrared light emitting unit, the first end surface is at least partially opposite to the second end surface, the second end surface is arranged on one side of the first end surface away from the infrared light emitting unit, and the second end surface is at least partially opposite to the second light incoming surface of the light guide plate;
wherein the first end face has a size range D 1 The second end face has a dimension range D 2 The dimension range D of the first end face 1 Dimension range D with the second end face 2 The method meets the following conditions: d (D) 1 ≤D 2 。
7. The display device of claim 6, wherein the diffusion strip has a distance range H from the second light incident surface 1 The distance range H 1 The method meets the following conditions: h is more than or equal to 0.1 1 ≤0.3mm。
8. The display device of claim 2, wherein the recess has a depth range H 2 The back plate has a thickness range H 3 Depth range H of the groove 2 Thickness range H with the back plate 3 The method meets the following conditions: h 2 ≤0.5×H 3 。
9. An electronic device, the electronic device comprising:
the display device according to any one of claims 1 to 8;
the sensor is used for detecting the temperature of the display panel and obtaining a feedback signal; and
The control chip is electrically connected to the sensor and used for receiving the feedback signal, the control chip is further electrically connected to the infrared light component and selects whether to start the infrared light component according to the feedback signal, and infrared light is emitted to the display panel and heated when the infrared light component is started.
10. The electronic device of claim 9, wherein the sensor detects a 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 be turned on, the infrared light emitted by the infrared light component heats the display panel, and when the temperature of the display panel is higher than or equal to the first preset value, the sensor transmits a second feedback signal to the control chip, and the control chip receives the second feedback signal and drives the infrared light component to be turned off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310326299.9A CN116560140A (en) | 2023-03-23 | 2023-03-23 | Display device and electronic apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310326299.9A CN116560140A (en) | 2023-03-23 | 2023-03-23 | Display device and electronic apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12038640B1 (en) * | 2023-03-23 | 2024-07-16 | HKC Corporation Limited | Display device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12038640B1 (en) * | 2023-03-23 | 2024-07-16 | HKC Corporation Limited | Display device and electronic device |
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