CN111948845A - Framework for improving low-temperature working performance of liquid crystal - Google Patents
Framework for improving low-temperature working performance of liquid crystal Download PDFInfo
- Publication number
- CN111948845A CN111948845A CN202010913300.4A CN202010913300A CN111948845A CN 111948845 A CN111948845 A CN 111948845A CN 202010913300 A CN202010913300 A CN 202010913300A CN 111948845 A CN111948845 A CN 111948845A
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- China
- Prior art keywords
- liquid crystal
- heater
- optical film
- crystal box
- structural part
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
-
- 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
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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)
Abstract
The invention discloses a framework for improving the low-temperature working performance of liquid crystal, which comprises a structural part, and a liquid crystal box, a heater, an optical film and a light guide plate which are sequentially arranged in the structural part from top to bottom; the liquid crystal box is used for displaying, the heater is used for heating, and the optical film and the light guide plate are used for homogenizing light; LED lamps used as light sources are mounted on the inner wall of the structural part at positions close to the optical film and the light guide plate, and gaskets are filled in gaps between the optical film and the heater and gaps between the heater and the inner wall of the structural part and between the liquid crystal box and the structural part; the front surface or the back surface of the LED lamp is coated or covered with a heat conduction material with high heat conduction coefficient, so that heat generated by the operation of the LED lamp is transferred to the liquid crystal box, and the liquid crystal box is heated together with the heater. The framework can effectively improve the heating effect of the product, improve the low-temperature performance of the liquid crystal, shorten the heating time and reduce the heating power consumption.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a framework for improving the low-temperature working performance of liquid crystal.
Background
In the current high-grade display field, the working environment of the display is severe, and the phenomena of incapability of displaying or prolonged image response time and the like are caused due to the fact that the viscosity of liquid crystal is increased due to too low temperature. The environmental temperature of the display is strictly required in the special display field, and the low temperature requirement of the display can be as low as below minus 45 ℃, and the liquid crystal is almost frozen at the temperature. In order to meet the requirement of normal display function in such an environment, the liquid crystal needs to be heated by a heater, so that the liquid crystal is heated to a normal working range for normal operation. However, the existing heating technology has the problems of low heating speed, high power consumption, low edge temperature and the like.
Therefore, it is highly desirable to provide a new structure to improve the low temperature operation performance of liquid crystal.
Disclosure of Invention
The invention aims to provide a framework for improving the low-temperature working performance of liquid crystal, which can effectively improve the heating effect of products, improve the low-temperature performance of the liquid crystal, shorten the heating time and reduce the heating power consumption.
In order to achieve the aim, the invention provides a framework for improving the low-temperature working performance of liquid crystal, which comprises a structural part, and a liquid crystal box, a heater, an optical film and a light guide plate which are sequentially arranged in the structural part from top to bottom; the liquid crystal box is used for displaying, the heater is used for heating, and the optical film and the light guide plate are used for homogenizing light; wherein the content of the first and second substances,
LED lamps used as light sources are arranged on the inner wall of the structural member and close to the optical film and the light guide plate, and gaskets are filled in gaps between the optical film and the heater and between the heater and the inner wall of the structural member and gaps between the liquid crystal box and the structural member;
the front surface or the back surface of the LED lamp is coated or covered with heat conduction materials with high heat conduction coefficients so as to transfer heat generated by the operation of the LED lamp to the liquid crystal box and heat the liquid crystal box together with the heater.
Preferably, the spacer is filled between the optical film and the heater on one side and filled in gaps between the heater, the liquid crystal cell and the inner wall of the structural member on the other side.
Preferably, the thermally conductive material is a thermally conductive graphite sheet.
Preferably, the thermally conductive graphite sheet is L-shaped, with one segment attached or coated to the backlight tape and the other segment extending beyond the structural member and attached or coated to the liquid crystal cell.
According to the technical scheme, the working state of the display is analyzed, the fact that the backlight LED lamp generates high heat when the display works is found, in order to prolong the service life of the LED, heat generated by the work of the display is conducted to the external environment through the structural part, and the low-temperature working performance of the liquid crystal box is guaranteed by using a material with a high surface heat conduction coefficient to transfer the heat of a byproduct of the LED when the LED works to the liquid crystal box needing heat urgently, so that the low-temperature performance of the liquid crystal box is improved. Because the total heating power required by the low temperature of the liquid crystal box is constant, the power consumption of the corresponding heater can be reduced after the heat generated by the LED during working is introduced; the framework overcomes the problems of long heating time and high heating power consumption of the existing product, and improves the low-temperature display effect of the liquid crystal.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a conventional architecture;
FIG. 2 is an enlarged view of the mounting location of the structural flange of FIG. 1;
fig. 3 is a schematic structural diagram of an architecture for improving low-temperature operation performance of liquid crystal according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "upper, lower, inner, outer" and the like included in the terms merely represent the orientation of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.
Referring to fig. 3, the invention provides a framework for improving the low-temperature working performance of liquid crystal, which comprises a structural member, and a liquid crystal cell, a heater, an optical film and a light guide plate which are sequentially arranged in the structural member from top to bottom; the liquid crystal box is used for displaying, the heater is used for heating, and the optical film and the light guide plate are used for homogenizing light; wherein the content of the first and second substances,
LED lamps used as light sources are arranged on the inner wall of the structural member and close to the optical film and the light guide plate, and gaskets are filled in gaps between the optical film and the heater and between the heater and the inner wall of the structural member and gaps between the liquid crystal box and the structural member;
the front surface or the back surface of the LED lamp is coated or covered with heat conduction materials with high heat conduction coefficients so as to transfer heat generated by the operation of the LED lamp to the liquid crystal box and heat the liquid crystal box together with the heater.
In this embodiment, it is preferable that the spacer is filled between the optical film and the heater on one side and the heater, the liquid crystal cell, and the inner wall of the structural member on the other side.
In addition, the heat conduction material is a heat conduction graphite sheet or other materials with high heat conduction coefficients.
Furthermore, in order to optimize the framework for improving the low-temperature working performance of the liquid crystal, the heat-conducting graphite sheet is preferably in an L shape, one section of the heat-conducting graphite sheet is attached to or covered on the backlight belt, and the other section of the heat-conducting graphite sheet extends out of the structural member and is attached to or covered on the liquid crystal box.
It can be seen that, as shown in fig. 1 and 2, the liquid crystal cell in the prior art is used for display, the heater is used for heating, the optical film is used for light uniformization, the light guide plate is used for light uniformization, the LED lamp is a light source, the gasket is used for buffering and shock absorption, and the structural member is used for supporting and fixing each component. The structural member isolates the display area from the backlight area through the structural flange, and then a gasket (PE foam material, poor thermal conductivity) is filled between the structural member and the liquid crystal box. The structural flange and the gasket play a role in protecting the liquid crystal box, but prevent heat generated by the LED lamp from being transferred to the liquid crystal box.
Therefore, in the new framework provided by the invention, the structural flange is deleted, the heat conduction material with high heat conductivity coefficient is attached or coated on the front surface or the back surface of the LED lamp strip, the heat generated by the work of the LED lamp is transferred to the liquid crystal box, and the liquid crystal box is heated by matching with the heater at the back of the liquid crystal box. The deleted structural flange is filled through the gasket, and the effects of buffering, damping, supporting, fixing, shading and concealing can be achieved.
Through the technical scheme, heat generated by the work of the LED lamp is conducted to the external environment through the structural part, and the by-product heat generated by the work of the LED is transferred to the liquid crystal box which needs heat urgently to ensure the low-temperature working performance of the liquid crystal box through the material with high surface heat conduction coefficient, so that the low-temperature performance of the liquid crystal box is improved. Because the total heating power required by the low temperature of the liquid crystal box is constant, the power consumption of the corresponding heater can be reduced after the heat generated by the LED during working is introduced; the framework overcomes the problems of long heating time and high heating power consumption of the existing product, and improves the low-temperature display effect of the liquid crystal.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (4)
1. The framework for improving the low-temperature working performance of the liquid crystal is characterized by comprising a structural member, a liquid crystal box, a heater, an optical film and a light guide plate, wherein the liquid crystal box, the heater, the optical film and the light guide plate are sequentially arranged in the structural member from top to bottom; the liquid crystal box is used for displaying, the heater is used for heating, and the optical film and the light guide plate are used for homogenizing light; wherein the content of the first and second substances,
LED lamps used as light sources are arranged on the inner wall of the structural part and close to the optical film and the light guide plate, and gaskets are filled in gaps between the optical film and the heater and between the heater and the inner wall of the structural part and gaps between the heater and the inner wall of the structural part and between the liquid crystal box and the structural part;
the front surface or the back surface of the LED lamp is coated or covered with a heat conduction material with high heat conduction coefficient, so that heat generated by the operation of the LED lamp is transferred to the liquid crystal box, and the liquid crystal box is heated together with the heater.
2. The architecture of claim 1, wherein the spacer is filled between the optical film and the heater, and filled between the heater, the liquid crystal cell and the inner wall of the structure.
3. The architecture for improving the low temperature operation performance of liquid crystal according to claim 1, wherein the heat conductive material is a heat conductive graphite sheet.
4. The structure of claim 3, wherein the graphite sheet is L-shaped, one section of the graphite sheet is attached to or covered on the backlight belt, and the other section of the graphite sheet extends to the outside of the structural member and is attached to or covered on the liquid crystal cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913300.4A CN111948845A (en) | 2020-09-03 | 2020-09-03 | Framework for improving low-temperature working performance of liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913300.4A CN111948845A (en) | 2020-09-03 | 2020-09-03 | Framework for improving low-temperature working performance of liquid crystal |
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| Publication Number | Publication Date |
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| CN111948845A true CN111948845A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010913300.4A Pending CN111948845A (en) | 2020-09-03 | 2020-09-03 | Framework for improving low-temperature working performance of liquid crystal |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6133979A (en) * | 1996-09-23 | 2000-10-17 | Lg Electronics Inc. | Liquid crystal display device with internal heating element |
| JP2013137480A (en) * | 2011-12-28 | 2013-07-11 | Sharp Corp | Liquid crystal display device |
| CN205318061U (en) * | 2015-12-15 | 2016-06-15 | 中航华东光电有限公司 | Liquid crystal display screen structure |
| CN207396918U (en) * | 2017-10-27 | 2018-05-22 | 深圳海汇科技有限公司 | A kind of cluster engine controller suitable for low temperature environment |
| CN109212807A (en) * | 2018-10-11 | 2019-01-15 | 深圳市晶联讯电子有限公司 | A kind of outdoor liquid crystal display screen |
| US20190302514A1 (en) * | 2018-03-29 | 2019-10-03 | Sharp Kabushiki Kaisha | Liquid crystal display device |
-
2020
- 2020-09-03 CN CN202010913300.4A patent/CN111948845A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6133979A (en) * | 1996-09-23 | 2000-10-17 | Lg Electronics Inc. | Liquid crystal display device with internal heating element |
| JP2013137480A (en) * | 2011-12-28 | 2013-07-11 | Sharp Corp | Liquid crystal display device |
| CN205318061U (en) * | 2015-12-15 | 2016-06-15 | 中航华东光电有限公司 | Liquid crystal display screen structure |
| CN207396918U (en) * | 2017-10-27 | 2018-05-22 | 深圳海汇科技有限公司 | A kind of cluster engine controller suitable for low temperature environment |
| US20190302514A1 (en) * | 2018-03-29 | 2019-10-03 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN109212807A (en) * | 2018-10-11 | 2019-01-15 | 深圳市晶联讯电子有限公司 | A kind of outdoor liquid crystal display screen |
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Application publication date: 20201117 |