CN112130365B - Heating plate for liquid crystal display screen - Google Patents
Heating plate for liquid crystal display screen Download PDFInfo
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- CN112130365B CN112130365B CN202011001474.XA CN202011001474A CN112130365B CN 112130365 B CN112130365 B CN 112130365B CN 202011001474 A CN202011001474 A CN 202011001474A CN 112130365 B CN112130365 B CN 112130365B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 title claims abstract description 39
- 238000009792 diffusion process Methods 0.000 claims abstract description 57
- 239000003365 glass fiber Substances 0.000 claims abstract description 34
- 238000005485 electric heating Methods 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 41
- 238000009413 insulation Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G02F1/133382—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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
-
- 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
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- 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
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A heating plate for a liquid crystal display screen is attached to the inner side of the liquid crystal display screen and comprises a first transparent plate and a first diffusion layer, wherein the first transparent plate is a transparent glass plate and is provided with a transparent electric heating circuit; the first axial direction is defined as the axial direction parallel to the plate body surface of the first transparent plate, the first diffusion layer is arranged on one side of the first transparent plate and is formed by gathering a large number of glass fibers along the first axial direction, and a large number of gaps are formed among the glass fibers. The heating plate can reduce heat loss during operation, and does not reduce the durability of the liquid crystal display screen.
Description
Technical Field
The invention relates to a heating plate, in particular to a heating plate for a liquid crystal display screen.
Background
When the liquid crystal display screen is used in a low-temperature environment, the response speed of the display screen can be slowed due to slow torsion of liquid crystal molecules, and then the problems of smear and the like are caused. Especially, when the lcd is applied to a directional backlight stereoscopic display, the slow switching of left and right frames can seriously affect the stereoscopic display effect.
For this reason, the design of attaching transparent hot plate on liquid crystal display has been proposed to someone, and it can start the hot plate and heat the display screen under low temperature environment to avoid the problem that liquid crystal display response brought too slowly.
However, when the transparent heating plate is attached to the liquid crystal display, only one surface of the transparent heating plate is in contact with the liquid crystal display, and the other surface of the transparent heating plate is generally exposed to the air, so that heat is seriously lost during operation, and finally, energy consumption is greatly increased.
Also someone sets up transparent hot plate in liquid crystal display's inside, and it though can reduce thermal loss, nevertheless plastic parts such as hot plate and liquid crystal display rear side are shaded contact, use for a long time after, often can lead to it to take place to warp, has reduced the durability of display screen.
Disclosure of Invention
An object of the present invention is to provide a heating panel for a liquid crystal display panel, which can reduce heat loss during operation without lowering durability of the display panel. The adopted specific scheme is as follows:
a heating plate for a liquid crystal display, characterized in that:
the solar cell comprises a first transparent plate and a first diffusion layer, wherein the first transparent plate is a transparent glass plate and is provided with a transparent electric heating circuit;
the first axial direction is defined as the axial direction parallel to the plate body surface of the first transparent plate, the first diffusion layer is arranged on one side of the first transparent plate and is formed by gathering a large number of glass fibers along the first axial direction, and a large number of gaps are formed among the glass fibers.
The heating plate is generally attached to the inner side of the liquid crystal display screen for use, and when the liquid crystal display screen is provided with a backlight, the heating plate is generally arranged between the liquid crystal display screen and the backlight.
In particular, the first transparent plate may be a 0.4 mm-3 mm thick transparent glass plate, the dimensions of which may be set in accordance with the required liquid crystal display.
The second axis is defined as another axis parallel to the first transparent plate face and perpendicular to the first axis. The first diffusion layer is arranged on one side of the first transparent plate and is formed by gathering a large number of glass fibers along the first axial direction, so that the first diffusion layer has a light diffusion function by means of refraction of the glass fibers to light in the second axial direction, and can be used for improving the visual angle of the liquid crystal display screen without causing adverse effects on the display of the liquid crystal display screen.
High temperature resistant glass fiber can not be heated and damaged when the hot plate work, and a large amount of gaps between the glass fiber can reduce the heat conduction of first diffusion layer by a wide margin for first diffusion layer has good heat-proof quality, and the heat of hot plate can not lose in first diffusion layer one side and cause the damage of LCD screen rear side plastic part, but acts on in order to improve its response characteristic on LCD high-efficiently.
Preferably, the glass fibers are compacted such that the interstices between the glass fibers extend in a first axial direction. Therefore, the mutual communication of the gaps among the glass fibers can be greatly reduced, and the heat conduction of the first diffusion layer is further reduced.
Preferably, the average diameter of the glass fibre is 3 μm-100 μm, the thickness of the first diffusion layer being 5-50 times the average diameter of the glass fibre. The design can ensure that the first diffusion layer has good light diffusion performance and heat insulation performance.
Preferably, the two surfaces of the first transparent plate are a first surface and a second surface respectively, the transparent electric heating circuit is arranged on the first surface, and the first diffusion layer is attached to the second surface. Therefore, when the heating plate is used, the transparent electric heating circuit is more closely attached to the liquid crystal display screen, and the electric heat of the transparent electric heating circuit can act on the liquid crystal display screen more quickly.
Preferably, the heating plate further comprises a second transparent plate, and the first diffusion layer is sandwiched and pressed between the first transparent plate and the second transparent plate. The second transparent plate keeps the glass fiber in a well pressed state, thereby ensuring the heat insulation performance.
Further preferably, a sealing rubber ring is arranged between the first transparent plate and the second transparent plate, so that a closed cavity is formed between the first transparent plate and the second transparent plate, and the first diffusion layer is arranged in the closed cavity; and the sealed cavity is vacuumized to enable the first transparent plate, the second transparent plate and the first diffusion layer to be compressed by the atmosphere. Therefore, the heating plate can always keep the glass fiber in the first diffusion layer in a compressed state by utilizing the principle of atmospheric pressure compression, and further ensure the heat insulation property.
Preferably, the heating plate further comprises a second diffusion layer, the second diffusion layer is defined as another axial direction which is parallel to the plate body surface of the first transparent plate and perpendicular to the first axial direction, the second diffusion layer is stacked on the first diffusion layer, the second diffusion layer is formed by gathering a plurality of glass fibers which are arranged along the second axial direction, and a plurality of gaps are formed among the glass fibers. The second diffusion layer can not only further reduce heat loss, but also enable the heating plate to have a light diffusion function in the first axial direction, thereby further improving the viewing angle characteristic of the liquid crystal display when the heating plate is applied to the liquid crystal display.
Compared with the prior art, the heating plate provided by the invention has the following beneficial effects:
because the first diffusion layer has good light diffusion function and heat insulation property, when the heating plate is applied to the liquid crystal display, the heating plate not only can improve the visual angle characteristic of the liquid crystal display, but also can reduce the heat loss of the heating plate at one side of the first diffusion layer and effectively act on the liquid crystal display, thereby improving the utilization efficiency of the heat, reducing the energy consumption and protecting the plastic parts at the rear side of the liquid crystal display.
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The technical solution of the present invention is further explained by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of components of a stereoscopic display according to a first embodiment;
FIG. 2 is a schematic view of a heating plate of a stereoscopic display according to a first embodiment;
FIG. 3 is a schematic side view of a stereoscopic display according to a first embodiment;
fig. 4 is a schematic partial cross-sectional view of a heating plate of a stereoscopic display according to a first embodiment;
FIG. 5 is a schematic view of a heating panel according to a second embodiment;
fig. 6 is a schematic structural diagram of a heating plate according to a second embodiment.
Detailed Description
Example one
As shown in fig. 1, the stereoscopic display 100 includes a dynamic backlight 10, a lens unit 20, a heating plate 30, and a liquid crystal display panel 40 in this order from the inside to the outside, the lens unit 20 has a plurality of fresnel lenses 21 arranged in parallel in a left-right direction a (first axial direction), and the extension axis of the fresnel lenses 21 is a vertical direction B (second axial direction). The dynamic backlight 10 includes a plurality of LED lamp groups 11 corresponding to the lens 21 of the lens portion in position, each LED lamp group 11 includes a plurality of rows of LEDs, and switches to light the LEDs in different rows to project light in different directions (mainly two directions corresponding to the left and right eyes) according to the positional relationship with the corresponding lens 21, and the switching of the LEDs in different rows can project different pictures to the left and right eyes of a person in cooperation with the switching of the left and right pictures of the liquid crystal display 40, thereby forming stereoscopic vision.
As shown in fig. 1-3, the heating plate 30 is adhered to the inner side of the lcd panel 40 by an adhesive layer, and comprises a first transparent plate 31, a diffusion layer 32 and a second transparent plate 33, wherein the first and second transparent plates 31, 33 are glass plates (with a thickness of 0.4 mm-3 mm), wherein one surface (the first surface) of the first transparent plate 31 adjacent to the lcd panel 100 is provided with ITO transparent heating circuits 311 capable of being energized to heat the lcd panel 40 in a low temperature environment to ensure a sufficient left-right picture switching speed of the lcd panel 40 during operation.
As shown in fig. 2 to 4, a sealing rubber ring 34 is disposed between the first and second transparent plates 31 and 33, a sealed cavity 341 is formed between the first and second transparent plates 31 and 33, the diffusion layer 32 is sandwiched in the sealed cavity 341, and the sealed cavity 341 is evacuated, so that the first and second transparent plates 31 and 33 are compressed by the atmosphere, thereby compacting the diffusion layer 32. The diffusion layer 32 is formed by stacking a large number of glass fibers 321 in the left-right direction, and the average diameter of the glass fibers 321 is 20 μm (3 μm-100 μm), which is 100 μm. Because the glass fibers 321 are compacted, a large number of gaps 322 extending in the left-right direction are formed among the glass fibers 321, and the gaps 322 are very little communicated and vacuumized, so that the diffusion layer 32 has good heat insulation performance, heat is only applied to the display screen 40 and is not lost on one side of the diffusion layer 32 when the heating plate 30 works, power consumption can be reduced, and damage to plastic components such as the Fresnel lens 21 on the rear side of the display screen 40 is avoided.
As shown in fig. 3, the glass fiber 321 refracts light in the vertical direction, so that the diffusion layer 32 has a light diffusion function in the vertical direction, which can diffuse the light emission L of the LED lamp (which is viewed at a suitable position in front of the display 100 and has been widened left and right by the lens 21) into a bright band extending vertically, thereby improving the viewing angle of the liquid crystal display panel 40 to realize the stereoscopic display function of the display 100.
Example two
As shown in fig. 5 and 6, the heating plate 30 includes a first transparent plate 31, a first diffusion layer 321, a second diffusion layer 322 and a second transparent plate 33, wherein the first and second transparent plates 31 and 33 are glass plates (with a thickness of 0.4 mm-3 mm), and an ITO transparent electrothermal circuit 311 is disposed on an outer surface (a first surface) of the first transparent plate 31.
A sealing rubber ring 34 is arranged between the first and second transparent plates 31, 33, thereby forming a sealed cavity 341 between the first and second transparent plates 31, 33, the first diffusion layer 321 and the second diffusion layer 322 are clamped in the sealed cavity 341, and the sealed cavity 341 is vacuumized, thereby enabling the first and second transparent plates 31, 33 to be compressed by atmosphere, and further compacting the first diffusion layer 321 and the second diffusion layer 322. The first diffusion layer 321 is formed by stacking a large number of glass fibers 323 in the left-right direction a, and the second diffusion layer 322 is formed by stacking a large number of glass fibers 324 in the up-down direction B.
The glass fibres 323, 324 have an average diameter of 20 μm (3 μm-100 μm both) and are deposited to a thickness of 100 μm. Since the glass fibers 323 and 324 are compressed, they have a large number of voids extending in the left-right or up-down direction B, and the communication between the voids is very small, whereby the first and second diffusion layers 321 and 322 have excellent heat insulation properties.
In use, the heating plate 30 is attached to an inner side of a liquid crystal display panel, which can be used as an optical diffusion layer of the liquid crystal display panel to improve the viewing angle characteristics of the liquid crystal display panel. And the power can be switched on to heat the liquid crystal display screen under the low-temperature environment so as to ensure the response of the liquid crystal display screen. The first and second diffusion layers 321, 322 have good heat insulation performance, and the heat is only applied to the display screen and is not lost on one side of the second transparent plate 33, so that not only can the energy consumption be saved, but also the plastic parts on the rear side of the display screen can not be damaged.
Furthermore, it should be noted that the names of the parts of the embodiments described in the present specification may be different, and the equivalent or simple changes of the structures, the features and the principles described in the present patent concept are included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a hot plate for liquid crystal display, its inboard attached at a liquid crystal display, characterized in that:
the liquid crystal display panel comprises a first transparent plate and a first diffusion layer, wherein the first transparent plate is a transparent glass plate, two surfaces of the first transparent plate are a first surface and a second surface respectively, the first surface is close to the liquid crystal display screen, and the first transparent plate is provided with a transparent electric heating circuit;
the first axial direction is defined to be the axial direction parallel to the surface of the first transparent plate, the first diffusion layer is attached to the second surface of the first transparent plate and formed by gathering a large number of glass fibers along the first axial direction, and a large number of gaps are formed among the glass fibers.
2. The heating plate of claim 1, wherein: the glass fibers are compacted such that voids between the glass fibers extend in a first axial direction.
3. The heating plate of claim 1, wherein: the average diameter of the glass fiber is 3 μm-100 μm, and the thickness of the first diffusion layer is 5-50 times the average diameter of the glass fiber.
4. The heating plate of claim 1, wherein: the heating plate further comprises a second transparent plate, and the first diffusion layer is clamped and pressed between the first transparent plate and the second transparent plate.
5. The heating plate of claim 4, wherein: a sealing rubber ring is arranged between the first transparent plate and the second transparent plate, so that a closed cavity is formed between the first transparent plate and the second transparent plate, and the first diffusion layer is arranged in the closed cavity; and the closed cavity is vacuumized to enable the first transparent plate, the second transparent plate and the first diffusion layer to be compressed by atmosphere.
6. The heating plate of claim 1, wherein: the second diffusion layer is defined as the other axial direction which is parallel to the plate body surface of the first transparent plate and vertical to the first axial direction, the second diffusion layer is stacked on the first diffusion layer and is formed by gathering a large number of glass fibers which are arranged along the second axial direction, and a large number of gaps are formed among the glass fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001474.XA CN112130365B (en) | 2020-09-22 | 2020-09-22 | Heating plate for liquid crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011001474.XA CN112130365B (en) | 2020-09-22 | 2020-09-22 | Heating plate for liquid crystal display screen |
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| CN112130365A CN112130365A (en) | 2020-12-25 |
| CN112130365B true CN112130365B (en) | 2022-09-23 |
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| CN202011001474.XA Active CN112130365B (en) | 2020-09-22 | 2020-09-22 | Heating plate for liquid crystal display screen |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594162U (en) * | 2009-12-25 | 2010-09-29 | 江西联创电子有限公司 | Mobile phone screen capable of working at ultra-low temperature |
| CN105911761A (en) * | 2016-06-07 | 2016-08-31 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal panel and liquid crystal display |
| CN207488667U (en) * | 2017-11-18 | 2018-06-12 | 深圳市百川通电子有限公司 | A kind of liquid crystal display with transparent heating layer |
| CN209167739U (en) * | 2018-12-10 | 2019-07-26 | 珠海川普光电科技有限公司 | A kind of liquid-crystal displaying screen structure with cold performance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060221295A1 (en) * | 2005-04-04 | 2006-10-05 | Lear Corporation | Lcd heater system |
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- 2020-09-22 CN CN202011001474.XA patent/CN112130365B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594162U (en) * | 2009-12-25 | 2010-09-29 | 江西联创电子有限公司 | Mobile phone screen capable of working at ultra-low temperature |
| CN105911761A (en) * | 2016-06-07 | 2016-08-31 | 武汉华星光电技术有限公司 | Backlight module, liquid crystal panel and liquid crystal display |
| CN207488667U (en) * | 2017-11-18 | 2018-06-12 | 深圳市百川通电子有限公司 | A kind of liquid crystal display with transparent heating layer |
| CN209167739U (en) * | 2018-12-10 | 2019-07-26 | 珠海川普光电科技有限公司 | A kind of liquid-crystal displaying screen structure with cold performance |
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| CN112130365A (en) | 2020-12-25 |
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