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CN115421332A - Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly - Google Patents

Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly Download PDF

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Publication number
CN115421332A
CN115421332A CN202211077283.0A CN202211077283A CN115421332A CN 115421332 A CN115421332 A CN 115421332A CN 202211077283 A CN202211077283 A CN 202211077283A CN 115421332 A CN115421332 A CN 115421332A
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CN
China
Prior art keywords
led lamp
lamp panel
backlight assembly
vibration
low temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211077283.0A
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Chinese (zh)
Inventor
尹志乐
杨宇铭
黄金瑞
田冲
柳慧艳
高慧芳
吴添德
蒋韬
章鹏
曹允
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CETC 55 Research Institute
Original Assignee
CETC 55 Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CETC 55 Research Institute filed Critical CETC 55 Research Institute
Priority to CN202211077283.0A priority Critical patent/CN115421332A/en
Publication of CN115421332A publication Critical patent/CN115421332A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133628Illuminating devices with cooling means

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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 invention relates to the technical field of displays, in particular to a vibration-resistant and high and low temperature-resistant reinforced display backlight assembly, which comprises a heat dissipation plate, an LED lamp panel, a lamp cavity, diffusion glass and silica gel for fixing the lamp cavity and the diffusion glass, wherein the heat dissipation plate, the LED lamp panel, the lamp cavity and the diffusion glass are arranged from back to front; the LED lamp panel comprises an LED lamp tube, a dam and a PCB, the LED lamp tube is welded on the PCB, the optical dam is arranged around the LED lamp tube, and the LED lamp panel is bonded on the heat dissipation plate; the lamp cavity comprises a metal structure body, a high-reflection coating and heat-preservation foam, the high-reflection coating is arranged on the inner side, facing the LED lamp panel, of the metal structure body, the heat-preservation foam is arranged on the metal structure body, and the lamp cavity is fixed on the LED lamp panel through screws; the invention can effectively improve the strong vibration resistance and the high and low temperature resistance of the backlight component of the reinforced display, thereby improving the capability of the reinforced display in adapting to severe environment, and particularly has remarkable effect on the medium and large-sized displays.

Description

Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly
Technical Field
The invention relates to the technical field of displays, in particular to a reinforced display backlight assembly resisting vibration and high and low temperature.
Background
In recent years, medium and large size reinforced displays are increasingly demanded in high-end fields such as medical treatment, industrial control and the like, can be used as display and control consoles, conference machines and the like, and bring good visual experience. The existing large-size reinforced display generally adopts a side backlight design in order to realize lightness and thinness, and the design easily causes obvious optical abrasion phenomenon during strong vibration, and causes optical film wrinkle phenomenon due to light guide plate deformation during ultrahigh temperature or low temperature work, thereby affecting the display effect. The traditional direct type backlight has no light guide plate, and has better high and low temperature resistance than the side backlight, but the light homogenizing distance is larger, so that the weight and the thickness of the display are larger, and the use is inconvenient.
At present, published patents and articles related to direct-type backlight mainly focus on shortening the uniform light distance of direct-type backlight, for example, lens design or using MINLED, etc., aiming at solving the problem of lightness and thinness in general use environment, and cannot meet the requirements of high-end fields on strong vibration resistance and high and low temperature resistance of backlight components.
In summary, the research and development of a reinforced display backlight assembly resistant to vibration and high and low temperatures is still a key problem to be solved urgently in the technical field of displays.
Disclosure of Invention
In order to solve the problems, the invention provides a reinforced display backlight assembly with vibration resistance and high and low temperature resistance, the dam design is carried out on four sides of a backlight LED, and a diffusion layer with a micro-structure design is matched for use, so that the height of a lamp cavity is 3mm, the thickness and the weight of the lamp cavity are close to those of a side backlight design, the backlight assembly is lightened and thinned, diffusion glass with diffusion and heating functions is placed on the lamp cavity, light homogenizing and heating are realized, an optical film is replaced, and the problems of optical film abrasion and film wrinkle under strong vibration and high and low temperature environments are avoided, so that the vibration resistance and high temperature resistance of the backlight assembly are improved.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a vibration-resistant and high and low temperature-resistant reinforced display backlight assembly, which comprises a heat dissipation plate, an LED lamp panel, a lamp cavity, diffusion glass and silica gel, wherein the heat dissipation plate, the LED lamp panel, the lamp cavity and the diffusion glass are arranged from back to front;
the LED lamp panel comprises LED lamp tubes, a dam and a PCB, the LED lamp tubes are welded on the PCB, the optical dam is arranged around the LED lamp tubes, and the LED lamp panel is bonded on the heat dissipation plate;
the lamp cavity comprises a metal structure body, a high-reflection coating and heat-preservation foam, the high-reflection coating is arranged on the inner side, facing the LED lamp panel, of the metal structure body, the heat-preservation foam is arranged on the metal structure body, and the lamp cavity is fixed on the LED lamp panel through screws;
the diffusion glass comprises a diffusion layer positioned on the front side and an ITO layer positioned on the back side, and the short edge of the ITO layer is provided with an extraction electrode.
The invention is further arranged as follows: the LED lamp tubes are arranged in a plurality of groups, and the distance between every two adjacent LED lamp tubes is larger than 7mm.
The invention is further arranged as follows: the LED lamp panel is bonded on the heat dissipation plate through heat conduction glue.
The invention is further provided with: the height of the lamp cavity is 3mm.
The invention is further provided with: the width of the heat preservation foam is 4.5-5mm, and the thickness of the heat preservation foam is 1-1.5mm.
The invention is further provided with: the thickness of the diffusion glass is more than 1.5mm.
The invention is further provided with: the extraction electrode is copper foil.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
(1) The reinforced display backlight component with vibration resistance and high and low temperature resistance provided by the invention belongs to the direct type backlight design, has the characteristics of lightness and thinness, and is close to the thickness and weight of the side backlight;
(2) The reinforced display backlight assembly with vibration resistance and high and low temperature resistance has super-strong vibration resistance, and has no abnormality even if the backlight assembly vibrates continuously for more than 1h in three axial directions under the random vibration condition with the acceleration of 6.06G;
(3) The reinforced display backlight assembly with vibration resistance and high and low temperature resistance provided by the invention can resist ultrahigh and low temperature, continuously work for more than 4 hours at high temperature of +70 ℃ and low temperature of-55 ℃ and display normally.
Drawings
FIG. 1 is an exploded view of a ruggedized display backlight assembly that is vibration resistant and temperature and humidity resistant in accordance with the present invention;
FIG. 2 is a cross-sectional view of a ruggedized display backlight assembly that is resistant to vibration and high and low temperatures in accordance with the present invention;
fig. 3 is a front view of a ruggedized display backlight assembly that is resistant to vibration and high and low temperatures in accordance with the present invention.
The reference numbers in the figures illustrate:
1. a heat dissipation plate; 2. an LED lamp panel; 21. an LED lamp tube; 22. enclosing a dam; 23. a PCB board; 3. a lamp chamber; 31. a metal structure; 32. a highly reflective coating; 33. heat preservation foam; 4. diffusion glass; 41. a diffusion layer; 42. an ITO layer; 43. leading out an electrode; 5. silica gel.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment is as follows:
as shown in fig. 1-3, the present invention provides a reinforced display backlight assembly with vibration resistance and high and low temperature resistance, which comprises a heat dissipation plate 1, an LED lamp panel 2, a lamp cavity 3, diffusion glass 4, and silica gel 5 for fixing the lamp cavity 3 and the diffusion glass 4;
the LED lamp panel 2 comprises an LED lamp tube 21, a dam 22 and a PCB 23, the LED lamp tube 21 is welded on the PCB 23, the optical dam 22 is arranged around the LED lamp tube 21, and the LED lamp panel 2 is bonded on the heat dissipation plate 1;
the lamp cavity 3 comprises a metal structure body 31, a high-reflection coating 32 and heat-preservation foam 33, the high-reflection coating 32 is arranged on the inner side, facing the LED lamp panel 2, of the metal structure body 31, the heat-preservation foam 33 is arranged on the metal structure body 31, and the lamp cavity 3 is fixed on the LED lamp panel 2 through screws;
the diffusion glass 4 includes a diffusion layer 41 on the front surface and an ITO layer 42 on the back surface, and the short sides of the ITO layer 42 are provided with extraction electrodes 43.
In the present embodiment, the material of the optical dam 22 includes but is not limited to PMMA, metal, etc. which can increase the backlight brightness and reduce the dodging distance, and the highly reflective coating 32 can effectively reflect the light of the LED.
In the invention, the LED lamp tubes 21 are arranged in a plurality, and the distance between the adjacent LED lamp tubes 21 is more than 7mm.
In the present embodiment, the number of the LED tubes 21 in fig. 2 is two.
In the invention, the LED lamp panel 2 is adhered to the heat dissipation plate 1 through heat conducting glue.
In the present embodiment, the thermal conductive paste used has excellent thermal conductive properties, including but not limited to silicone thermal conductive paste, epoxy AB paste, and the like.
In the present invention, the height of the lamp chamber 3 is 3mm.
In the invention, the width of the heat preservation foam 33 is 4.5-5mm, and the thickness is 1-1.5mm.
In the present embodiment, the thermal insulation foam 33 is provided to perform vibration isolation and thermal insulation.
In the present invention, the thickness of the diffusion glass 4 is more than 1.5mm.
In the embodiment, the diffusion glass 4 has a better diffusion effect by passing through the microstructure diffusion layer 41 on the front surface, and the ratio of the uniform light distance to the interval of the LED lamp 21 is close to 1:1, the better light-homogenizing effect is ensured to be realized under the lower height of the lamp cavity 3.
In the present invention, the lead electrode 43 is a copper foil.
In this embodiment, the lead electrodes 43 are provided to be used as heating electrodes, i.e., heaters, after being soldered with wires to provide heating for the display panel at a low temperature, and as an embodiment, the thickness of the copper foil is 2mm.
The reinforced display backlight assembly with vibration resistance and high and low temperature resistance provided by the invention has excellent strong vibration resistance and high and low temperature resistance, improves the capability of the reinforced display in adapting to severe environment, and particularly has remarkable effect on medium and large-sized displays.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The reinforced display backlight assembly resistant to vibration and high and low temperatures is characterized by comprising a heat dissipation plate (1), an LED lamp panel (2), a lamp cavity (3), diffusion glass (4) and silica gel (5) for fixing the lamp cavity (3) and the diffusion glass (4), wherein the heat dissipation plate, the LED lamp panel, the lamp cavity and the diffusion glass are sequentially arranged from the back to the front;
the LED lamp panel (2) comprises an LED lamp tube (21), a dam (22) and a PCB (23), the LED lamp tube (21) is welded on the PCB (23), the optical dam (22) is arranged around the LED lamp tube (21), and the LED lamp panel (2) is bonded on the heat dissipation plate (1);
the LED lamp panel is characterized in that the lamp cavity (3) comprises a metal structure body (31), a high-reflection coating (32) and heat-preservation foam (33), the high-reflection coating (32) is arranged on the inner side, facing the LED lamp panel (2), of the metal structure body (31), the heat-preservation foam (33) is arranged on the metal structure body (31), and the lamp cavity (3) is fixed on the LED lamp panel (2) through screws;
the diffusion glass (4) comprises a diffusion layer (41) located on the front face and an ITO layer (42) located on the back face, and an extraction electrode (43) is arranged on the short side of the ITO layer (42).
2. The backlight assembly of claim 1, wherein the LED tubes (21) are disposed in a plurality, and the distance between adjacent LED tubes (21) is greater than 7mm.
3. The backlight assembly of claim 1, wherein the LED lamp panel (2) is adhered to the heat sink (1) by thermal conductive adhesive.
4. A vibration and high and low temperature resistant ruggedized display backlight assembly according to claim 1, wherein the height of the lamp cavity (3) is 3mm.
5. The backlight assembly for ruggedized display against vibration and high and low temperature, as claimed in claim 1, wherein the insulating foam (33) has a width of 4.5-5mm and a thickness of 1-1.5mm.
6. A vibration and high and low temperature resistant ruggedized display backlight assembly of claim 1, wherein the diffusion glass (4) has a thickness greater than 1.5mm.
7. The backlight assembly of claim 1, wherein the extraction electrode (43) is copper foil.
CN202211077283.0A 2022-09-05 2022-09-05 Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly Pending CN115421332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211077283.0A CN115421332A (en) 2022-09-05 2022-09-05 Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211077283.0A CN115421332A (en) 2022-09-05 2022-09-05 Vibration-resistant and high-low temperature-resistant reinforced display backlight assembly

Publications (1)

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CN115421332A true CN115421332A (en) 2022-12-02

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090015782A1 (en) * 2007-07-12 2009-01-15 Brian Yi Liquid crystal display and method of manufacture
US20110019363A1 (en) * 2009-07-23 2011-01-27 Scott Vahlsing Field serviceable display device
RU145576U1 (en) * 2013-11-11 2014-09-20 Открытое акционерное общество "Конструкторское бюро "Дисплей" LCD
KR20160074802A (en) * 2014-12-18 2016-06-29 ㈜미래큐브 Low heat and ultra high brightness backlight unit and liquified crystal display
CN206755014U (en) * 2017-05-15 2017-12-15 陈新东 Automobile is according to ground cowl lamp
CN210006404U (en) * 2019-08-12 2020-01-31 西安恒基光电科技有限责任公司 liquid crystal display with white spot resistance
US20210157046A1 (en) * 2019-11-22 2021-05-27 Beijing Boe Optoelectronics Technology Co., Ltd. Backlight assembly, backlight unit and display panel
CN213876221U (en) * 2020-11-23 2021-08-03 广州市宝擎科技有限公司 Low temperature resistant reinforced display
CN215813637U (en) * 2021-09-22 2022-02-11 南京若吉电子有限公司 Reinforced liquid crystal display with heat-insulation and vibration-isolation structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090015782A1 (en) * 2007-07-12 2009-01-15 Brian Yi Liquid crystal display and method of manufacture
US20110019363A1 (en) * 2009-07-23 2011-01-27 Scott Vahlsing Field serviceable display device
RU145576U1 (en) * 2013-11-11 2014-09-20 Открытое акционерное общество "Конструкторское бюро "Дисплей" LCD
KR20160074802A (en) * 2014-12-18 2016-06-29 ㈜미래큐브 Low heat and ultra high brightness backlight unit and liquified crystal display
CN206755014U (en) * 2017-05-15 2017-12-15 陈新东 Automobile is according to ground cowl lamp
CN210006404U (en) * 2019-08-12 2020-01-31 西安恒基光电科技有限责任公司 liquid crystal display with white spot resistance
US20210157046A1 (en) * 2019-11-22 2021-05-27 Beijing Boe Optoelectronics Technology Co., Ltd. Backlight assembly, backlight unit and display panel
CN213876221U (en) * 2020-11-23 2021-08-03 广州市宝擎科技有限公司 Low temperature resistant reinforced display
CN215813637U (en) * 2021-09-22 2022-02-11 南京若吉电子有限公司 Reinforced liquid crystal display with heat-insulation and vibration-isolation structure

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Application publication date: 20221202

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