CN110618558A - Combined component of LED lamp in backlight source - Google Patents
Combined component of LED lamp in backlight source Download PDFInfo
- Publication number
- CN110618558A CN110618558A CN201910813241.0A CN201910813241A CN110618558A CN 110618558 A CN110618558 A CN 110618558A CN 201910813241 A CN201910813241 A CN 201910813241A CN 110618558 A CN110618558 A CN 110618558A
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- CN
- China
- Prior art keywords
- led
- groove
- silica gel
- metal piece
- circuit board
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The invention provides a combined component of an LED lamp in a backlight source, which comprises a light guide plate, a metal piece, an LED, a flexible circuit board, a heat-conducting double-sided adhesive tape and a silica gel pad, wherein the metal piece is integrally in the shape of a square groove; the LED, the flexible circuit board and the heat-conducting double-sided adhesive tape are all arranged in a gap between the two bosses in the groove. The combined component of the technical scheme realizes good fixation of the light guide plate, the metal piece and the LED, does not generate relative displacement/friction, and ensures that the LED is not damaged; the boss is not easy to break, and the damage rate cannot be increased due to temperature change in practical application. The problem of the light-emitting effect that recess and boss department spotlight lead to poor is solved, the optical property of product has been promoted.
Description
Technical Field
The invention relates to the technical field of liquid crystal displays, in particular to a combined component of an LED lamp in a backlight source.
Background
Liquid crystal displays have been widely used in various devices because of their advantages of energy conservation, low radiation, low distortion, thin thickness, light weight, good display effect, etc. Compared with the traditional liquid crystal display adopting the CCFL backlight source, the liquid crystal display adopting the LED backlight source has the advantages of more uniform light emission, longer service life and better environmental protection, and all manufacturers apply the best technology to the liquid crystal display adopting the LED backlight source, so that the liquid crystal display adopting the LED backlight source belongs to one of the high and new technical projects which are mainly supported by the state at present.
In the existing liquid crystal display adopting the LED backlight source, the backlight LED is located in the groove of the light guide plate, but because the LED and the light guide plate are not fixed, but are fixedly connected with the metal piece through the flexible circuit board and the heat-conducting double-sided tape, the light guide plate moves/rubs (for example, vibration, high and low temperature, etc.) relative to the metal piece and the LED in reliability test and practical application, and the following risks and problems exist: firstly, the LED is damaged when the groove of the light guide plate is in relative displacement with the LED; secondly, when the light guide plate and the metal piece generate relative displacement and friction, the lug boss of the groove of the light guide plate is easy to break, and the damage rate is improved due to temperature change in practical application; thirdly, the light guide plate is designed to be groove-shaped, and light is converged at the groove and the boss, which affects the light emitting effect of the backlight, for example, a bright spot problem is generated.
Disclosure of Invention
The invention aims to provide a combined component of an LED lamp in a backlight source, which solves the defect of unreasonable structure of the existing LED backlight source and further solves the quality problem and the optical performance problem caused by unreasonable structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a combined member of LED lamp in backlight, includes light guide plate, metalwork and LED, its characterized in that: the metal piece is integrally arranged in a square groove shape, two bosses are respectively arranged at any two adjacent corners in the groove of the metal piece, the combined component further comprises a flexible circuit board, a heat-conducting double-sided adhesive tape and a silica gel pad, the light guide plate is arranged in the groove in the metal piece and is extruded with the groove through the silica gel pad, the LED is connected onto the flexible circuit board, the flexible circuit board is attached to the heat-conducting double-sided adhesive tape, and the heat-conducting double-sided adhesive tape is attached to the inner wall between the two bosses in the groove;
the LED, the flexible circuit board and the heat-conducting double-sided adhesive tape are all arranged in a gap between the two bosses in the groove.
Furthermore, the silica gel pads are four in total, wherein two of the silica gel pads are straight strips and are respectively arranged at the two bosses, and the other two of the silica gel pads are right-angled and are respectively arranged at the other two corners of the groove.
Further, the metal part is a sheet metal part or a die casting part, and the LEDs can be arranged in one or more than one particle.
Furthermore, the connection mode of the LED connected to the flexible circuit board is welding.
Further, the silica gel pad is fixed on the inner wall of the metal piece through double-faced adhesive tape or strong adhesive.
Further, in the assembling process of the combined member, the assembly of the silica gel pad should be pre-compressed and a compressible amount is left.
Compared with the prior art, the combined component of the LED lamp in the backlight source has the advantages that firstly, the light guide plate, the metal piece and the LED are well fixed, relative displacement/friction among the light guide plate, the metal piece and the LED is avoided, and the LED is prevented from being damaged; because the light guide plate and the metal piece cannot generate relative displacement and friction, the lug boss is not easy to break, and the damage rate cannot be increased due to temperature change in practical application.
The combined member of the technical scheme is reasonable in structure, the metal piece is arranged into a groove shape, the problem that in the prior art, the light emitting effect is poor due to condensation at the groove and the boss is solved, and the optical performance of a product is improved.
Drawings
FIG. 1 is a schematic view of the structure of the composite member of the present invention;
FIG. 2 is a partial enlarged view of the constituent structure of the composite structural member of the present invention;
FIG. 3 is a partially enlarged view of an LED assembly portion of the composite member of the present invention;
FIG. 4 is an assembled view of the composite member of the present invention;
in the figure: 1. light guide plate, 2, metalwork, 3, LED, 4, gap space, 5, boss, 6, silica gel pad, 7, flexible line way board, 8, heat conduction double faced adhesive tape, 9, recess.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a combined component of an LED lamp in a backlight source, which is used as a light source after being used for a liquid crystal display, and the design of the backlight source is very important and is concerned with the service life, the optical performance and the product quality of a product. Referring to fig. 1, a schematic diagram of a composition structure of a combination member of the present invention and fig. 2, a partial enlarged view of the composition structure of the combination member of the present invention, the combination member of the present invention provides a novel LED backlight structure, including a light guide plate 1, a metal piece 2 and an LED3, the metal piece is integrally configured in a square groove shape, two arbitrarily adjacent corners in a groove 9 of the metal piece are respectively provided with a boss 5, the combination member further includes a flexible circuit board 7, a heat-conductive double-sided tape 8 and a silica gel pad 6, the light guide plate 1 is disposed in the groove 9 inside the metal piece 2 and is extruded with the groove 9 through the silica gel pad 6, the LED3 is connected to the flexible circuit board 7, the flexible circuit board 7 is attached to the heat-conductive double-sided tape 8, and the heat-conductive double-sided tape 8 is attached to an inner wall between the; the LED3, the flexible circuit board 7 and the heat-conducting double-sided adhesive tape 8 are all installed in the gap space 4 between the two bosses 5 in the groove 9, the gap space 4 actually belongs to one part of the groove 9 and is a three-dimensional space between the two bosses 5 in the groove 9, and the space is called as the gap space 4 for convenience of understanding. In the integral structure, the metal piece 2 is arranged in a square groove shape and is used for directly placing the light guide plate 1 and propping against the boss 5 for fixing, so that the stability of the integral structure is improved; moreover, the light guide plate 1 can be made flat, and the problem of light condensation at the boss 5 of the metal piece 2 is solved. One big reason for such a design is that: the metal piece 2 has the characteristic of small expansion and contraction rate in a cold and hot state, so that the lug boss 5 and the groove 9 are directly formed on the metal piece 2 to protect the LED.
The silica gel pads 6 are four in total, wherein two of the silica gel pads 6 are straight strips and are respectively arranged at the two bosses 5, the other two silica gel pads 6 are right-angled and are respectively arranged at the other two corners of the groove 9, and the silica gel pads 6 are fixed on the inner wall of the groove 9 through double-faced adhesive tape or strong adhesive. In this design, the outer sides of the bosses 5 are respectively provided with a silicone pad 6, and the corresponding positions on the opposite sides of the position of the light guide plate 1 supported by the bosses 5 are also provided with the silicone pads 6. This helps the light guide plate 1 to have the silicone rubber pad 6 in each direction in the plane for pre-pressing and to leave a compressible amount, in particular to offset the excessive stress applied to the light guide plate 1 by the boss 5 on impact, and in addition, to offset the stress generated by the light guide plate 1 expanding with heat and contracting with cold by itself.
In the technical scheme of the invention, the metal part 2 is a sheet metal part or a die casting part, and has an important function of heat dissipation besides supporting the overall strength of a product, and the basic principle is as follows: the LED3 is connected to the flexible circuit board 7, the LED3 can be one or more, the connection mode is welding, the flexible circuit board 7 is fixed on the metal piece 2 through the heat conducting double-sided adhesive tape 8 in an adhering mode, heat generated in the working process of the LED3 is transmitted to the metal piece 2 through the flexible circuit board 7 and the heat conducting double-sided adhesive tape 8, and finally the heat is scattered by the metal piece 2 and is scattered to the outside through the surface of the metal piece.
In this embodiment, the LED3 is mounted on the flexible circuit board 7 and then bonded to the metal component 2 by the double-sided thermal-conductive adhesive tape, preferably at the side wall of the gap space 4, so as to fully play the role of the gap space 4, and since the gap space 4 is the space between the two bosses 5 in the groove 9, the size of the boss 5 can be adjusted as required during the manufacturing process to adjust the size of the gap space 4 formed.
Referring to fig. 3, a partial enlarged view of an LED assembly portion of the combined member according to the present invention is further illustrated, as shown in the figure, a depth of a gap space between two bosses 5 in the metal piece 2 is defined as H1, and a height of the LED3 after being fixed to the gap space through the flexible printed circuit board 7 and the double sided thermal adhesive tape 8 is defined as H2, in the present embodiment, H1 is larger than H2, and H1-H2 are 0.1-0.5 m, so that the size of the LED space can be ensured, the LED3 is protected, but not too large, otherwise, light loss of the LED3 is severe, and brightness of light coming out of the light guide plate 1 is low. Because the LED3 and the flexible circuit board 7 are directly assembled on the metal piece 2, and the groove 9 is also directly molded on the metal piece 2, the assembling size of the LED3 and the groove 9 is more accurate, and the problem that the distance between the LED3 and the boss 5 of the light guide plate 1 is too small due to the assembling error of the LED3 and the metal piece 2 is solved.
Referring to fig. 4, an assembly diagram of the combined member of the invention, the assembly relationship and the assembly process of the combined member of the internal LED lamp in the backlight source of the invention are as follows: firstly, welding LED3 on flexible line way board 7, the second step is fixed the flexible line way board 7 another side to the recess 9 lateral wall of metalwork 2 through heat conduction double faced adhesive tape 8, the third step uses double faced adhesive tape or powerful viscose to glue silica gel pad 6 on the inner wall of metalwork 2, the fourth step, assembles light guide plate 1, through silica gel pad 6 pre-compaction mode, fixes light guide plate 1 to metalwork 2 after with silica gel pad 6 pre-compaction and remaining compressible volume.
According to the combined component of the LED lamp in the backlight source, firstly, the light guide plate 1, the metal piece 2 and the LED3 are well fixed, relative displacement/friction among the three parts is avoided, and the LED3 is prevented from being damaged; because the light guide plate 1 and the metal piece 2 do not generate relative displacement and friction, the boss 5 is not easy to break, and the damage rate cannot be increased due to temperature change in practical application.
The combined member of the technical scheme is reasonable in structure, the metal piece 2 is arranged into a groove shape, the problem that in the prior art, the light emitting effect is poor due to condensation at the groove 9 and the boss 5 is solved, and the optical performance of a product is improved.
While the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a combined member of LED lamp in backlight, includes light guide plate, metalwork and LED, its characterized in that: the metal piece is integrally arranged into a square groove, two bosses are respectively arranged at any two adjacent corners in the groove of the metal piece, the combined component further comprises a flexible circuit board, a heat-conducting double-sided adhesive tape and a silica gel pad, the light guide plate is arranged in the groove in the metal piece and is extruded with the groove through the silica gel pad, the LED is connected onto the flexible circuit board, the flexible circuit board is attached to the heat-conducting double-sided adhesive tape, and the heat-conducting double-sided adhesive tape is attached to the inner wall between the two bosses in the groove;
the LED, the flexible circuit board and the heat-conducting double-sided adhesive tape are all arranged in a gap space between the two bosses in the groove.
2. The combined member of the LED lamp in the backlight source as claimed in claim 1, wherein: the silica gel pad is total four, wherein two the silica gel pad is the vertical bar form and arranges in two respectively boss department, two in addition the silica gel pad is the right angle form and arranges in respectively two edges and corners of not establishing the boss of recess.
3. The combined member of the LED lamp in the backlight source as claimed in claim 1, wherein: the metal part is a sheet metal part or a die casting, and the LEDs can be arranged in one or more than one piece.
4. The combined member of the LED lamp in the backlight source as claimed in claim 1, wherein: the connection mode of the LED connected on the flexible circuit board is welding.
5. The combined member of the LED lamp in the backlight source as claimed in claim 1, wherein: the silica gel pad is fixed on the inner wall of the metal piece through double-sided adhesive or strong adhesive.
6. The combined member of an LED lamp in a backlight source as set forth in any one of claims 1 to 5, wherein: in the assembling process of the combined component, the silica gel pad is assembled by pre-compressing and reserving compressible quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910813241.0A CN110618558A (en) | 2019-08-30 | 2019-08-30 | Combined component of LED lamp in backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910813241.0A CN110618558A (en) | 2019-08-30 | 2019-08-30 | Combined component of LED lamp in backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110618558A true CN110618558A (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910813241.0A Pending CN110618558A (en) | 2019-08-30 | 2019-08-30 | Combined component of LED lamp in backlight source |
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| Country | Link |
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| CN (1) | CN110618558A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1678945A (en) * | 2002-09-03 | 2005-10-05 | 夏普株式会社 | Liquid crystal display device having sound output function and the like and electronic device using the same |
| CN102865527A (en) * | 2012-10-17 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module |
| CN202852720U (en) * | 2012-09-21 | 2013-04-03 | 深圳市德仓科技有限公司 | Metal frame and backlight module and liquid crystal display device |
| CN103148408A (en) * | 2013-01-30 | 2013-06-12 | 苏州佳世达电通有限公司 | Backlight module group and display equipment of backlight module group |
| CN206990967U (en) * | 2017-03-27 | 2018-02-09 | 长春市芳冠电子科技有限公司 | A kind of precise treatment ultra-thin liquid crystal display die group |
| US20190154908A1 (en) * | 2016-05-11 | 2019-05-23 | Sharp Kabushiki Kaisha | Lighting device and display device |
| CN110161753A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
-
2019
- 2019-08-30 CN CN201910813241.0A patent/CN110618558A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1678945A (en) * | 2002-09-03 | 2005-10-05 | 夏普株式会社 | Liquid crystal display device having sound output function and the like and electronic device using the same |
| CN202852720U (en) * | 2012-09-21 | 2013-04-03 | 深圳市德仓科技有限公司 | Metal frame and backlight module and liquid crystal display device |
| CN102865527A (en) * | 2012-10-17 | 2013-01-09 | 深圳市华星光电技术有限公司 | Backlight module |
| CN103148408A (en) * | 2013-01-30 | 2013-06-12 | 苏州佳世达电通有限公司 | Backlight module group and display equipment of backlight module group |
| US20190154908A1 (en) * | 2016-05-11 | 2019-05-23 | Sharp Kabushiki Kaisha | Lighting device and display device |
| CN206990967U (en) * | 2017-03-27 | 2018-02-09 | 长春市芳冠电子科技有限公司 | A kind of precise treatment ultra-thin liquid crystal display die group |
| CN110161753A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191227 |
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| RJ01 | Rejection of invention patent application after publication |