CN214174782U - Display device and vehicle-mounted display equipment - Google Patents
Display device and vehicle-mounted display equipment Download PDFInfo
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- CN214174782U CN214174782U CN202120270254.0U CN202120270254U CN214174782U CN 214174782 U CN214174782 U CN 214174782U CN 202120270254 U CN202120270254 U CN 202120270254U CN 214174782 U CN214174782 U CN 214174782U
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 69
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- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
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- 239000002096 quantum dot Substances 0.000 description 11
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- 238000003384 imaging method Methods 0.000 description 8
- 210000002858 crystal cell Anatomy 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
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- 230000001276 controlling effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000012886 Vertigo Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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Abstract
The utility model relates to a display technology provides a display device and vehicle-mounted display equipment. The display device comprises a liquid crystal display panel, a backlight emission source, a diffusion layer and a prism layer; the backlight emission source is positioned on the non-light-emitting display side of the liquid crystal display panel and comprises at least one light-emitting diode; the diffusion layer is positioned between the backlight emission source and the liquid crystal display panel, and the diffusion layer and the backlight emission source are separated from each other; the prism layer is located between the diffusion layer and the backlight emission source, the prism layer is separated from the backlight emission source, and the prism layer is separated from the diffusion layer. The embodiment of the utility model provides a display device and on-vehicle display equipment to reduced the heat of being conducted to liquid crystal display panel by the emission source in a poor light, avoided the emission source in a poor light to produce the emergence that the heat burns out the liquid crystal display panel phenomenon.
Description
Technical Field
The utility model relates to a display technology especially relates to a display device and vehicle-mounted display equipment.
Background
HUD (head up display) is through the optical design of reflective, on the light that sends the image source finally projects imaging window (imaging plate, windshield etc.), the driver need not to bow just can directly see the picture, avoids the driver to bow and sees the distraction that the panel board leads to in driving process, improves and drives factor of safety, also can bring better driving experience simultaneously.
Specifically, light emitted by the HUD image source is reflected on the transparent imaging window and is retained on one side of the cockpit, and enters the eyes of the driver. These light rays entering the eyes of the driver make it possible for the driver to see a virtual image of the picture displayed on the HUD image source, spatially presented on the other side of the imaging window. Meanwhile, because the imaging window itself is transparent, the ambient light on the other side of the imaging window can still transmit the image to the eyes of the driver through the imaging window, so that the driver can see the HUD imaging and can not influence the road condition of the driver during driving to observe the road condition outside the vehicle. However, the heat from the backlight is too high on the rear side of the HUD system to burn out the LCD panel, and the heat sink cannot solve this problem.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a display device and on-vehicle display equipment to reduced the heat of being conducted to liquid crystal display panel by the emission source in a poor light, avoided the emission source in a poor light to produce the emergence that the heat burns out the liquid crystal display panel phenomenon.
In a first aspect, an embodiment of the present invention provides a display device, including a liquid crystal display panel, a backlight emission source, a diffusion layer, and a prism layer; a backlight emission source positioned on a non-light emitting display side of the liquid crystal display panel, the backlight emission source including at least one light emitting diode; the diffusion layer is positioned between the backlight emission source and the liquid crystal display panel, and the diffusion layer and the backlight emission source are separated from each other; the prism layer is positioned between the diffusion layer and the backlight emission source, and the prism layer is separated from the backlight emission source and the diffusion layer.
Furthermore, the display device also comprises a light ray regulation layer which is positioned between the diffusion layer and the liquid crystal display panel.
Further, the light regulation and control layer comprises a first electrode, a second electrode and a liquid crystal layer, and the liquid crystal layer is located between the first electrode and the second electrode.
Furthermore, the display device also comprises an encapsulation layer, wherein the encapsulation layer is positioned between the backlight emission source and the liquid crystal display panel and coats the diffusion layer and/or the prism layer.
Further, the encapsulation layer includes an acrylic plate.
Furthermore, the diffusion layer is attached to the surface of the liquid crystal display panel close to one side of the backlight emission source.
Further, the backlight emission source includes a plurality of light emitting diodes, and a light emitting direction of the light emitting diodes faces the liquid crystal display panel.
Furthermore, the backlight emission source further comprises a light guide plate, the light guide plate is positioned on one side of the backlight emission source close to the diffusion layer, and the light emitting diode is positioned on the light incidence side of the light guide plate.
In a second aspect, an embodiment of the present invention provides an on-vehicle display device, including the first aspect, a display device, a windshield and a projection device, wherein the projection device is located between the display device and the windshield.
Furthermore, the display device also comprises a photoluminescent layer which is positioned on the windshield and arranged on an emergent light path of the projection device.
The utility model discloses among the display device, through with the diffuse layer, prism layer and the independent separation setting of emission source in a poor light, enlarge the diffuse layer, the distance between prism layer and the emission source three in a poor light, thereby the heat by emission source conduction to diffuse layer and prism layer in a poor light has been reduced, the deformation by heat on diffuse layer and prism layer has been avoided, with this simultaneously, the distance between emission source in a poor light and the display panel has also been enlarged, thereby the heat by emission source conduction to liquid crystal display panel in a poor light has been reduced, avoid the emission source in a poor light to produce the emergence that the heat burns out the liquid crystal display panel phenomenon.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an on-vehicle display device according to an embodiment of the present invention;
fig. 7 is a schematic light path diagram of an on-board display device according to an embodiment of the present invention;
fig. 8 is a block diagram of a vehicle-mounted display device according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments for the specific embodiments, structures, features and effects of a display device and a vehicle-mounted display apparatus according to the present invention.
Fig. 1 is a schematic structural diagram of a display device provided by an embodiment of the present invention, the display device includes a backlight emission source 10 and a liquid crystal display panel 20, the backlight emission source 10 is located on a non-light emitting display side of the liquid crystal display panel 20, that is, the backlight emission source 10 is located on a side away from the light emitting display of the liquid crystal display panel 20. It is understood that the light emitted from the backlight emission source 10 provides a backlight to the liquid crystal display panel 20, so that the liquid crystal display panel 20 can emit light for display. The backlight emission source 10 includes at least one light emitting diode 11, which may be preferably a micro light emitting diode. The display device further includes a diffusion layer 30, the diffusion layer 30 is located between the backlight emission source 10 and the liquid crystal display panel 20, and the diffusion layer 30 is used for increasing uniformity of light. The diffusion layer 30 is separated from the backlight emission source 10, that is, the diffusion layer 30 is disposed at a distance from the backlight emission source 10, and the distance between the diffusion layer 30 and the backlight emission source 10 is greater than 0.
With continued reference to fig. 1, the display device further includes a prism layer 31, the prism layer 31 is located between the diffusion layer 30 and the backlight emission source 10, the prism layer 31 is separated from the backlight emission source 10, that is, the prism layer 31 is spaced apart from the backlight emission source 10, and the distance between the prism layer 31 and the backlight emission source 10 is greater than 0. The embodiment of the utility model provides an in, prism layer 31 and backlight emission source 10 alternate segregation, the distance between prism layer 31 and the backlight emission source 10 is far away to reduced by the heat that backlight emission source 10 conducts to prism layer 31, avoided the emergence of prism layer 31 thermal deformation phenomenon. The prism layer 31 is also separated from the diffusion layer 30.
The utility model discloses among the display device, with diffusion layer 30 and the independent separation setting of emission source 10 in a poor light, concentrate diffusion layer 30 and emission source 10 in a poor light and set up as the backlight together for prior art, the distance between diffusion layer 30 and the emission source 10 in a poor light is far away to reduced and conducted the heat to diffusion layer 30 by emission source 10 in a poor light, avoided the emergence of diffusion layer 30 thermal deformation condition. The prism layer 31 and the backlight emission source 10 are independently and separately arranged, and compared with the prior art that the prism layer 31 and the backlight emission source 10 are arranged together in a concentrated mode to serve as a backlight source, the prism layer 31 is far away from the backlight emission source 10, so that heat conducted from the backlight emission source 10 to the prism layer 31 is reduced, and the prism layer 31 is prevented from being deformed by heat. Further, the prism layer 31 is also separated from the diffusion layer 30, so that the conduction of heat between the prism layer 31 and the diffusion layer 30 is reduced, and the adverse effect of either one of the prism layer 31 and the diffusion layer 30 on the other one is avoided when the other one is thermally deformed.
Alternatively, referring to FIG. 1, the distance L between the backlight emission source 10 and the liquid crystal display panel 20 is greater than or equal to 1mm and less than or equal to 5mm (i.e., 1 mm. ltoreq. L. ltoreq.5 mm). The distance between the backlight source 10 and the liquid crystal display panel 20 is greater than or equal to 1mm and less than or equal to 5mm, and compared with the prior art that the distance between the backlight source 10 and the liquid crystal display panel 20 is less than or equal to 0.5mm, the distance between the backlight source 10 and the liquid crystal display panel 20 is far, so that the heat conducted from the backlight source 10 to the liquid crystal display panel 20 is reduced, and the phenomenon that the liquid crystal display panel 20 is burnt by the heat generated by the backlight source 10 is avoided.
Alternatively, referring to fig. 1, the diffusion layer 30 is attached to a surface of the liquid crystal display panel 20 on a side adjacent to the backlight emission source 10. In the embodiment of the present invention, the diffusion layer 30 is attached to the non-light-emitting display side of the liquid crystal display panel 20, so as to reduce the fixing difficulty of the diffusion layer 30 and the liquid crystal display panel 20; on the other hand, the distance between the diffusion layer 30 and the backlight emission source 10 is increased, thereby reducing the amount of heat conducted from the backlight emission source 10 to the diffusion layer 30; on the other hand, the diffusion layer 30 is prevented from being deformed by a high temperature, and the operation stability of the display device is improved.
Exemplarily, referring to fig. 1, the liquid crystal display panel 20 may include a first polarizer 21, a second polarizer 22, and a liquid crystal cell 23, the liquid crystal cell 23 being located between the first polarizer 21 and the second polarizer 22, the first polarizer 21 being located between the liquid crystal cell 23 and the backlight emission source 10. The diffusion layer 30 is attached to the surface of the first polarizer 21 on the side away from the liquid crystal cell 23.
Exemplarily, referring to fig. 1, the liquid crystal cell 23 may include an array substrate, a color filter substrate, and a display liquid crystal layer between the array substrate and the color filter substrate. The liquid crystal molecules in the display liquid crystal layer rotate under the action of the electric field, thereby controlling the backlight brightness passing through the liquid crystal display panel 20, so that the display device displays a preset image.
Exemplarily, referring to fig. 1, the display device further includes a housing 40, and the backlight emission source 10 and the liquid crystal display panel 20 are fixed in the housing 40. The housing 40 serves to fix and protect the backlight emission source 10 and the liquid crystal display panel 20.
Fig. 2 is a schematic structural diagram of another display device according to an embodiment of the present invention, referring to fig. 1, the display device further includes an encapsulation layer 50, the encapsulation layer 50 is located between the backlight emission source 10 and the liquid crystal display panel 20, and the diffusion layer 30 and/or the prism layer 31 are/is covered by the encapsulation layer 50. That is, the encapsulating layer 50 covers at least one of the diffusion layer 30 and the prism layer 31 (the encapsulating layer 50 covers the diffusion layer 30 and the prism layer 31 in fig. 2 is illustrated as an example). In the embodiment of the present invention, the diffusion layer 30 and/or the prism layer 31 are disposed in the package layer 50, so that the package layer 50 covers the diffusion layer 30 and/or the prism layer 31, thereby preventing the diffusion layer 30 and/or the prism layer 31 from deforming due to high temperature, and improving the working stability of the display device; on the other hand, the encapsulation layer 50 can prevent moisture from entering, and can prevent moisture from corroding the diffusion layer 30 and/or the prism layer 31.
It is understood that when the encapsulation layer 50 covers the diffusion layer 30 and/or the prism layer 31, all surfaces of the diffusion layer 30 and/or the prism layer 31 are surrounded by the encapsulation layer 50. In other embodiments, the encapsulation layer 50 may also partially surround the diffusion layer 30 and/or the prism layer 31. That is, a part of the surface of the diffusion layer 30 and/or the prism layer 31 is surrounded by the encapsulation layer 50, and the other part of the surface is not surrounded by the encapsulation layer 50. Illustratively, the diffusion layer 30 has the same height as the encapsulation layer 50 in a direction perpendicular to the liquid crystal display panel 20. When the diffusion layer 30 is disposed in the encapsulation layer 50, the surface of the diffusion layer 30 adjacent to the backlight emission source 10 and the surface of the diffusion layer 30 adjacent to the liquid crystal display panel 20 are surrounded by the encapsulation layer 50, and the lateral end surfaces of the diffusion layer 30 perpendicular to the liquid crystal display panel 20 are exposed and not surrounded by the encapsulation layer 50.
Optionally, the encapsulation layer 50 comprises an acrylic sheet. Acrylic is also called special treated organic glass, and is a replacement product of organic glass. In the embodiment of the present invention, the diffusion layer 30 can be disposed in the acrylic plate.
Fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention, referring to fig. 3, the display device further includes a light regulation layer 32, and the light regulation layer 32 is located between the diffusion layer 30 and the liquid crystal display panel 20. Because the diffusion layer 30 is separated from the backlight emission source 10, the light regulation layer 32 is separated from the backlight emission source 10, and the distance between the light regulation layer 32 and the backlight emission source 10 is relatively long, thereby reducing the heat conducted from the backlight emission source 10 to the light regulation layer 32 and avoiding the occurrence of the thermal deformation phenomenon of the light regulation layer 32. The light control layer 32 can switch the emitting angle of the light and play a role of converging the light.
Illustratively, referring to fig. 3, the light-controlling layer 32 is attached to a surface of the liquid crystal display panel 20 on a side close to the backlight emission source 10, and is used for converging light and then projecting the converged light to the liquid crystal display panel 20, thereby improving the light utilization rate.
Illustratively, the light regulating layer 32 includes a first electrode, a second electrode, and a liquid crystal layer between the first electrode and the second electrode. The electric field intensity and the electric field direction between the first electrode and the second electrode are controlled by controlling the voltage of the first electrode and the second electrode, so that the rotation angle of liquid crystal molecules in the liquid crystal layer is controlled, and the emergent angle of light rays is controlled.
Alternatively, referring to fig. 1 to 3, the backlight emission source 10 includes a plurality of light emitting diodes 11, and the light emitting direction of the light emitting diodes 11 is directed toward the liquid crystal display panel 20. The embodiment of the present invention provides a backlight emitting source 10 which can adopt the backlight mode of the direct type, thereby the light emitted by a plurality of light emitting diodes 11 can be directly projected to the liquid crystal display panel 20. In other embodiments, the backlight emitting source 10 may also adopt a lateral backlight mode.
Fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention, referring to fig. 4, a backlight source 10 includes a plurality of light emitting diodes 11 and a light guide plate 12, the plurality of light emitting diodes 11 are located on a side end surface (i.e., a light incident surface) of the light guide plate 12, and a light emitting direction of the light emitting diodes 11 faces the light guide plate 12. The embodiment of the present invention provides a backlight emitting source 10 which can adopt the side-in type backlight mode, thereby the light emitted by a plurality of light emitting diodes 11 is projected into a light guide plate 12, and is emitted to a liquid crystal display panel 20 through the light emitting surface of the light guide plate 12. The light emitting surface of the light guide plate 12 is adjacent to the side end surface of the light guide plate 12, and the light emitting surface of the light guide plate 12 may be parallel to the liquid crystal display panel 20, for example.
For example, referring to fig. 4, when the backlight source 10 adopts a side-in type backlight method, the diffusion layer 30 may be attached to a surface of the liquid crystal display panel 20 adjacent to the side of the backlight source 10. The film layer arrangement described above in the direct backlight system can be applied to the edge backlight system.
Fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 5, the display device further includes an encapsulation layer 50 and a prism layer 31. The sealing layer 50 is located between the backlight emission source 10 and the liquid crystal display panel 20, the prism layer 31 is located between the diffusion layer 30 and the backlight emission source 10, and the prism layer 31 and the backlight emission source 10 are separated from each other. The packaging layer 50 covers the diffusion layer 30, and the packaging layer 50 covers the prism layer 31.
Fig. 6 is a schematic structural diagram of a vehicle-mounted display device provided by an embodiment of the present invention, fig. 7 is a schematic structural diagram of a vehicle-mounted display device provided by an embodiment of the present invention, fig. 8 is a structural diagram of a vehicle-mounted display device provided by an embodiment of the present invention, with reference to fig. 6-8, the vehicle-mounted display device includes the display device 100, the windshield 300 and the projection device 200 in any of the above embodiments, and the projection device 200 is located between the display device 100 and the windshield 300. The preset image provided by the display device 100 is projected onto the windshield 300 through the projection device 200, and is finally observed by a user on the user side of the windshield 300, where the image observed by the user is a virtual image on the external environment side of the windshield 300. The external environment side and the user side are opposite sides of the windshield 300, and the external environment side may be located outside the vehicle-mounted display device, for example, and the user side may be located inside the vehicle-mounted display device, for example.
Alternatively, referring to fig. 6 to 8, the vehicle-mounted display apparatus further includes a photoluminescent layer 310, where the photoluminescent layer 310 is located on the windshield 300, and the photoluminescent layer 310 is disposed on an exit light path of the projection device 200. The light beam emitted by the projecting device 200 is projected onto the photoluminescent layer 310, so that the photoluminescent layer 310 emits light and displays a preset image, and thus, an image observed by a user on the user side of the windshield 300 is not an image formed by reflection of the windshield 300 any more, but an image generated by light emission of the photoluminescent layer 310, and visual vertigo is avoided.
Illustratively, referring to fig. 6-8, the photoluminescent layer 310 is located on the user side of the windshield 300. In other embodiments, the photoluminescent layer 310 may also be located on the ambient side of the windshield 300.
Illustratively, the photoluminescent layer 310 includes a plurality of quantum dots. When the light beam emitted from the display device 100 is irradiated to the photoluminescent layer 310, the quantum dots in the photoluminescent layer 310 are excited to emit light.
Further, the light beam emitted from the display device 100 includes red light, green light, and blue light, and the photoluminescent layer 310 may include first-particle quantum dots, second-particle quantum dots, and third-particle quantum dots, which are uniformly distributed in the photoluminescent layer 310. Red light emitted by the display device 100 is excited when being projected to the quantum dots with the first particle size, green light emitted by the display device 100 is excited when being projected to the quantum dots with the second particle size, and blue light emitted by the display device 100 is excited when being projected to the quantum dots with the third particle size.
Further, the display device 100 emits red light having a wavelength of 648nm, green light having a wavelength of 378nm, and blue light having a wavelength of 355 nm. Red light emitted by the display device 100 excites red light with a wavelength of 780nm when being projected to the quantum dots with the first particle size, green light emitted by the display device 100 excites green light with a wavelength of 552nm when being projected to the quantum dots with the second particle size, and blue light emitted by the display device 100 excites blue light with a wavelength of 480nm when being projected to the quantum dots with the third particle size.
Illustratively, referring to fig. 6-8, the in-vehicle display device further includes a control module, a mobile phone control module, an in-vehicle information module, and a human-computer interaction module. The control module is connected with the mobile phone control module, the vehicle-mounted information module, the display device and the projection device. The man-machine interaction module is connected with the mobile phone control module, the vehicle-mounted information module, the display device and the projection device. The mobile phone control module is used for being in communication connection with a mobile phone, and can comprise vehicle-mounted Bluetooth for example. The vehicle-mounted information module is used for providing vehicle information, and the vehicle information can comprise pulse speed vehicle conditions, road condition information, navigation information and the like. The human-computer interaction module is used for providing an operation interface of a user, and the operation interface comprises but is not limited to a touch operation interface, a voice operation interface and the like.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.
Claims (10)
1. A display device comprises a liquid crystal display panel, and is characterized by further comprising a backlight emission source, a diffusion layer and a prism layer;
the backlight emission source is positioned on the non-light-emitting display side of the liquid crystal display panel and comprises at least one light-emitting diode;
the diffusion layer is positioned between the backlight emission source and the liquid crystal display panel, and the diffusion layer and the backlight emission source are separated from each other;
the prism layer is positioned between the diffusion layer and the backlight emission source, and the prism layer is separated from the backlight emission source and the diffusion layer respectively.
2. The display device according to claim 1, further comprising a light regulating layer between the diffusion layer and the liquid crystal display panel.
3. The display device according to claim 2, wherein the light regulating layer comprises a first electrode, a second electrode, and a liquid crystal layer between the first electrode and the second electrode.
4. The display device according to any one of claims 1 to 3, further comprising an encapsulation layer between the backlight emission source and the liquid crystal display panel, the encapsulation layer encapsulating the diffusion layer and/or the prism layer.
5. The display device according to claim 4, wherein the encapsulation layer comprises an acrylic plate.
6. The display device according to claim 1, wherein the diffusion layer is attached to a surface of the liquid crystal display panel on a side adjacent to the backlight emission source.
7. The display device according to claim 5, wherein a light emitting direction of the light emitting diode is directed toward the liquid crystal display panel.
8. The display device according to claim 5, wherein the backlight emission source further comprises a light guide plate, the light guide plate is located on a side of the backlight emission source close to the diffusion layer, and the light emitting diode is located on a light incident side of the light guide plate.
9. An in-vehicle display apparatus characterized by comprising the display device according to any one of claims 1 to 8, a windshield, and a projection device located between the display device and the windshield.
10. The apparatus according to claim 9, further comprising a photoluminescent layer on the windshield and disposed on an exit path of the projection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270254.0U CN214174782U (en) | 2021-01-29 | 2021-01-29 | Display device and vehicle-mounted display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120270254.0U CN214174782U (en) | 2021-01-29 | 2021-01-29 | Display device and vehicle-mounted display equipment |
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| Publication Number | Publication Date |
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| CN214174782U true CN214174782U (en) | 2021-09-10 |
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| CN202120270254.0U Active CN214174782U (en) | 2021-01-29 | 2021-01-29 | Display device and vehicle-mounted display equipment |
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| CN (1) | CN214174782U (en) |
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- 2021-01-29 CN CN202120270254.0U patent/CN214174782U/en active Active
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