WO2019149084A1 - Source de lumière à del, module de del, module de rétroéclairage et dispositif électronique - Google Patents

Source de lumière à del, module de del, module de rétroéclairage et dispositif électronique Download PDF

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Publication number
WO2019149084A1
WO2019149084A1 PCT/CN2019/072192 CN2019072192W WO2019149084A1 WO 2019149084 A1 WO2019149084 A1 WO 2019149084A1 CN 2019072192 W CN2019072192 W CN 2019072192W WO 2019149084 A1 WO2019149084 A1 WO 2019149084A1
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WO
WIPO (PCT)
Prior art keywords
pole piece
soldering
bracket
accommodating
protruding
Prior art date
Application number
PCT/CN2019/072192
Other languages
English (en)
Chinese (zh)
Inventor
欧阳志斌
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2019149084A1 publication Critical patent/WO2019149084A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices

Definitions

  • the present application relates to the field of lighting technologies, and in particular, to an LED light source, an LED module, a backlight module, and an electronic device.
  • the application provides an LED light source
  • the LED light source includes an illuminant, a bracket and a pole piece
  • the bracket is provided with a light emitting surface
  • the illuminant is encapsulated in the bracket, and the light emitted by the illuminant is emitted from the light emitting surface
  • the pole piece includes the first a pole piece and a second pole piece
  • the first pole piece includes a first body portion and a first welding portion
  • the second pole piece includes a second body portion and a second welding portion
  • the first body portion and the second body portion are packaged on the bracket
  • the first soldering portion extends from the first body portion toward the light emitting surface
  • the second soldering portion extends from the second body portion toward the light emitting surface
  • the first soldering portion and the second soldering portion The portion is disposed at one end of the bracket adjacent to the light-emitting surface, and the first solder portion and the second solder portion are used for soldering to the circuit board.
  • the application also provides an LED module, the LED module comprises a circuit board and an LED light source, the circuit board is provided with a pad, the LED light source is electrically connected to the pad; the LED light source comprises an illuminant, a bracket and a pole piece, and the bracket a light-emitting surface is disposed, the light-emitting body is encapsulated in the bracket, and light emitted by the light-emitting body is emitted from the light-emitting surface; the pole piece includes a first pole piece and a second pole piece, and the first pole piece includes a first body portion and a first welding portion The second pole piece includes a second body portion and a second soldering portion.
  • the first body portion and the second body portion are encapsulated in the bracket and electrically connected to the illuminator.
  • the first soldering portion is directed toward the light from the first body portion.
  • the first soldering portion extends from the second body portion toward the light emitting surface, and the first soldering portion and the second soldering portion are disposed at one end of the bracket close to the light emitting surface, and the first soldering portion and the second soldering portion are used for Solder with the pad.
  • the present application further provides a backlight module, which comprises a diffusion plate, a light guide plate, a circuit board and an LED light source.
  • a backlight module which comprises a diffusion plate, a light guide plate, a circuit board and an LED light source.
  • the light guide plate and the diffusion plate are stacked, and the LED light source is electrically connected to the circuit board, and the light emitting surface of the LED light source is provided.
  • the LED light source comprises an illuminant, a bracket and a pole piece, the bracket is provided with a light-emitting surface, the illuminant is encapsulated in the bracket, and the light emitted by the illuminant is emitted from the light-emitting surface;
  • the pole piece includes the first a pole piece and a second pole piece, the first pole piece includes a first body portion and a first welding portion, the second pole piece includes a second body portion and a second welding portion, the first body portion and the second body portion are packaged on the bracket
  • the first soldering portion extends from the first body portion toward the light emitting surface, and the second soldering portion extends from the second body portion toward the light emitting surface, the first soldering portion and the second soldering portion
  • the portion is disposed at one end of the bracket adjacent to the light-emitting surface, and the first solder portion and the second sold
  • the present application also provides an electronic device including a display module, a diffusion plate, a light guide plate, a circuit board, and an LED light source.
  • the display module, the diffusion plate, and the light guide plate are sequentially stacked, and the LED light source and the circuit board are electrically connected.
  • the light-emitting surface of the LED light source is aligned with the light-incident surface of the light guide plate;
  • the LED light source comprises an illuminant, a bracket and a pole piece, the bracket is provided with a light-emitting surface, the illuminant is encapsulated in the bracket, and the light emitted by the illuminant is emitted from the light-emitting surface Shooting;
  • the pole piece includes a first pole piece and a second pole piece, the first pole piece includes a first body portion and a first welding portion, the second pole piece includes a second body portion and a second welding portion, the first body portion and The second body portion is encapsulated in the bracket and electrically connected to the illuminator.
  • the first soldering portion extends from the first body portion toward the light emitting surface, and the second solder portion extends from the second body portion toward the light emitting surface.
  • a soldering portion and a second soldering portion are disposed at one end of the bracket adjacent to the light emitting surface, and the first soldering portion and the second soldering portion are for soldering to the circuit board.
  • the lamp bead of the LED light source of the present application reduces the size of the lamp bead without reducing the stability of the soldering ground.
  • FIG. 1 is a schematic exploded view of an electronic device of the present application
  • FIG. 2 is a schematic cross-sectional view showing a stack of a display module and a backlight module of the present application
  • FIG. 3 is a schematic exploded view of a backlight module of the present application.
  • Figure 5 is a perspective structural view of an embodiment of a lamp bead of the present application.
  • Figure 6 is a perspective view showing the structure of the pole piece of Figure 5.
  • the electronic device provided by the embodiment of the present application includes an electronic device such as a smart phone, a tablet computer, a smart wearable device, a digital audio and video player, an electronic reader, a handheld game machine, and an in-vehicle electronic device.
  • an electronic device such as a smart phone, a tablet computer, a smart wearable device, a digital audio and video player, an electronic reader, a handheld game machine, and an in-vehicle electronic device.
  • first and second in this application are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present application are only used to explain the relative positional relationship between components in a certain posture (as shown in the drawing).
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • FIG. 1 is a schematic exploded view of an electronic device according to the present application.
  • the electronic device in this embodiment may include a display module 10, a backlight module 20, a middle frame 30, and a rear case 40.
  • the display module 10, the backlight module 20, the middle frame 30 and the rear case 40 are sequentially stacked, and a receiving space is formed between the middle frame 30 and the rear case 40.
  • the receiving space is for accommodating electronic components of the electronic device, such as a camera module. , battery, motherboard, microphone and speakers, etc.
  • the display module 10 is configured to display information received by the electronic device to the user, and the backlight module 20 is configured to provide illumination for the display module 10.
  • FIG. 2 is a schematic cross-sectional view showing a stack of the display module 10 and the backlight module 20 of the present application
  • FIG. 3 is a schematic exploded view of the backlight module 20 of the present application.
  • the backlight module 20 may include components such as an upper brightness enhancement sheet 21, a lower brightness enhancement sheet 22, a diffusion plate 23, a light guide plate 24, a light reflection sheet 25, and an LED module 50.
  • the display module 10, the upper brightness enhancement sheet 21, the lower brightness enhancement sheet 22, the diffusion plate 23, the light guide plate 24, and the light reflection sheet 25 are sequentially stacked, and the light exit surface 501 of the LED module 50 is aligned with the light incident surface 241 of the light guide plate 24. .
  • the light emitted by the LED module 50 travels farther through the conduction of the light guide plate 24, the diffuser plate 23 scatters the light evenly, and the reflective sheet 25 reflects the leaked light to the diffuser plate 23, and the upper brightness enhancement sheet 21 and the lower portion
  • the light-increasing sheet 22 turns the optical path of the light transmitted through the diffusing plate 23 perpendicular to the display module 10 to enhance the display brightness of the display module 10.
  • the display module 10 includes a display area and a non-display area.
  • the non-display area is generally used to set the LED module 50 of the backlight module, and the display area is used to display information received by the electronic device to the user.
  • the display module 10 needs to find a way to shorten the size of the non-display area, and the size of the LED module 50 is a key factor.
  • the external dimensions of the display module 10 are constant, the smaller the volume of the LED module 50 in the direction perpendicular to the light exit surface 501, the smaller the size of the non-display area, and correspondingly, the display area. The size is larger.
  • FIG. 4 is a schematic perspective view of the LED module 50 of the present application.
  • the LED module 50 can include an LED light source 51 and a circuit board 52.
  • the circuit board 52 is provided with a pad (not shown).
  • the LED light source 51 is soldered on the pad to electrically connect the LED light source 51 and the circuit board 52. .
  • the number of LED light sources 51 is plural, and the LED light sources 51 may be arranged in a row on the circuit board 52.
  • the LED light sources 51 may also be arranged in a plurality of rows on the circuit board 52, and are surrounded by a triangle, a quadrangle, and a circle on the circuit board 52. Or an opposite sex or the like, in which the light-emitting surface 501 of the LED light source 51 and the light guide plate 24 are aligned perpendicular to either side of the diffusion plate 23 (see the figure).
  • the circuit board 52 can be a rigid PCB board, the hard PCB board is well cooled, and the LED light source 51 is soldered stably and firmly.
  • the circuit board 52 can also be a flexible FPC board having a small thickness that can reduce the size of the LED light source 51 in a direction parallel to its light exit surface 501.
  • FIG. 5 is a schematic perspective structural view of an embodiment of the LED light source 51 of the present application.
  • the LED light source 51 can include an illuminator 53, a bracket 54 and a pole piece 55.
  • the bracket 54 is provided with a light-emitting surface 501.
  • the illuminant 53 is enclosed in the bracket 54.
  • the light emitted by the illuminant 53 is emitted from the light-emitting surface 501, and the pole piece 55 is respectively.
  • the illuminator 53 is connected to a pad (not shown) of the circuit board 52 to electrically connect the circuit board 52 to the illuminator 53.
  • the pole piece 55 is disposed at one end of the bracket 54 near the light exit surface 501.
  • the bracket 54 may be a plastic piece, the pole piece 55 may be a metal piece, and the bracket 54 and the pole piece 55 may be integrally molded by integral injection molding, and the bracket 54 and the pole piece 55 may also be separately manufactured and then assembled.
  • FIG. 6 is a schematic perspective view of the pole piece of FIG.
  • the pole piece 55 may include a first pole piece 56 and a second pole piece 57, the first pole piece 56 and the second pole piece 57 being spaced apart to insulate each other.
  • One of the first pole piece 56 and the second pole piece 57 communicates with the positive electrode of the illuminant 53, and the other of the first pole piece 56 and the second pole piece 57 communicates with the negative electrode of the illuminator 53.
  • the first pole piece 56 may include a first body portion 561 and a first soldering portion 562.
  • the first body portion 561 is encapsulated in the bracket 54 and electrically connected to the illuminant (refer to the illuminant 53 in FIG. 5).
  • the welded portion 562 extends from the first body portion 561 toward the light exit surface 501.
  • the shape of the first welded portion 562 may be square, circular, triangular or opposite, which is not limited herein.
  • the second pole piece 57 may include a second body portion 571 and a second soldering portion 572.
  • the second body portion 571 is encapsulated in the bracket 54 and electrically connected to the illuminant (refer to the illuminant 53 in FIG. 5).
  • the welded portion 572 extends from the second main body portion 571 toward the light exit surface 501.
  • the shape of the second soldering portion 572 may be square, circular, triangular or opposite, which is not limited herein.
  • the bracket 54 includes a longitudinal direction, a thickness direction, and a width direction, and the longitudinal direction, the thickness direction, and the width direction are perpendicular to each other, and the width direction is perpendicular to the light exit surface 501.
  • the first welded portion 562 and the second welded portion 572 are disposed at opposite ends of the bracket 54 in the longitudinal direction of the bracket 54.
  • the size of the bracket 54 in the direction perpendicular to the light exit surface 501 is reduced, thereby achieving the LED light source perpendicular to the light exit surface 501.
  • the first soldering portion 562 is bent and protruded from an end of the light-emitting surface 501 to form a first protruding portion 563.
  • the first protruding portion 563 and the first soldering portion 562 are used for soldering connection with a circuit board (not shown). To increase the soldering area of the first pole piece 56 and the circuit board.
  • the first soldering portion 562 can be bent and protruded parallel to the light-emitting surface 501 at one end of the light-emitting surface 501 to form a first protruding portion 563.
  • the first soldering portion 562 can also be bent away from the light-emitting surface 501 at an end close to the light-emitting surface 501.
  • the first protrusion 563 is formed by folding and folding, which is not limited herein.
  • the second soldering portion 572 is bent and protruded at an end close to the light emitting surface 501 to form a second protruding portion 573.
  • the second protruding portion 573 and the second soldering portion 572 are used for soldering connection with the circuit board to increase the second pole piece. 57 welding area with the board.
  • the second soldering portion 572 can be bent and protruded parallel to the light-emitting surface 501 at one end of the light-emitting surface 501 to form a second protruding portion 573.
  • the second soldering portion 572 can also face away from the light-emitting surface 501 at an end close to the light-emitting surface 501.
  • the second protrusion 573 is formed by bending, and is not limited herein.
  • the first pole piece 56 further includes a first bent portion 564 that is bent along one side of the first welded portion 562.
  • the first bent portion 564 and the first protruding portion 563 may be disposed at the opposite side of the first welded portion 562.
  • the first bent portion 564 abuts on the bracket 54 , and the first bent portion 564 is used to increase the contact area between the first pole piece 56 and the bracket 54 , thereby improving the stability of the connection between the first pole piece 56 and the bracket 54 .
  • the first bent portion 564 is bent in the thickness direction of the bracket 54.
  • the first bent portion 564 may be disposed on the same side of the first welded portion 562 as the first protruding portion 563, which is not limited herein.
  • the second pole piece 57 further includes a second bent portion 574 which is bent along one side of the second welded portion 572, and the second bent portion 574 and the second protruding portion 573 may be disposed at the opposite side of the second welded portion 572 On both sides, the second bent portion 574 abuts on the bracket 54 , and the second bent portion 574 is used to increase the contact area between the second pole piece 57 and the bracket 54 , thereby improving the stability of the connection between the second pole piece 57 and the bracket 54 . Further, the second bent portion 574 is bent in the thickness direction of the bracket 54. The second bent portion 574 may be disposed on the same side of the second welded portion 572 as the second protruding portion 573, which is not limited herein.
  • the bracket 54 includes a receiving portion 541 and a sealing portion 542.
  • the illuminating body is housed in the accommodating portion 541.
  • the sealing portion 542 is connected to the accommodating portion 541 to seal the accommodating portion 541.
  • the end surface of the accommodating portion 541 away from the sealing portion 542 is a light emitting surface 501.
  • the first body portion 561 and the second body portion 571 may be embedded in the sealing portion 542 and parallel to the light exit surface 501 to be laminated with the illuminant.
  • the first body portion 561 and the second body portion 571 may be embedded in the accommodating portion 541 and parallel to the light-emitting surface 501 to be laminated with the illuminant.
  • the first soldering portion 562 and the second soldering portion 572 abut against the receiving portion 541 toward the surface of the circuit board.
  • the sealing portion 542 is provided with a first accommodating groove 543 and a second accommodating groove 544.
  • the first accommodating groove 543 and the second accommodating groove 544 are disposed at opposite ends of the longitudinal direction of the accommodating portion 541.
  • a soldering portion 562 extends from the first body portion 561 along the bottom wall of the first receiving groove 543, and the first protruding portion 563 is received in the first receiving groove 543 to reduce the thickness of the LED light source in the bracket 54.
  • the second soldering portion 572 extends from the second body portion 571 along the bottom wall of the second receiving groove 544, and the second protruding portion 573 is received in the second receiving groove 544 to reduce the LED light source in the bracket 54. Volume in the thickness direction.
  • the shape of the first accommodating groove 543 may be L-shaped, that is, the first accommodating groove 543 further extends in the thickness direction of the bracket 54 , and the first bending portion 564 is received in the first accommodating groove. Within 543, thereby reducing the volume of the bracket 54 in the length direction.
  • the shape of the second accommodating groove 544 may be L-shaped, that is, the second accommodating groove 544 is further extended in the thickness direction of the bracket 54 , and the second bent portion 574 is received in the second accommodating groove 544 , thereby The volume of the bracket 54 in the length direction is reduced.
  • the one end of the first soldering portion 562 and the second soldering portion 572 adjacent to the light emitting surface 501 does not exceed the receiving portion 541 . That is, the end surface of the receiving portion 541 near one end of the light-emitting surface 501 may be flush with the end surface corresponding to the first soldering portion 562 and the second soldering portion 572, and the end surface of the receiving portion 541 near one end of the light-emitting surface 501 may extend beyond the first soldering portion 562.
  • a heat dissipating groove 545 is provided at one end of the sealing portion 542 facing away from the accommodating portion 541 to increase the heat dissipating area of the illuminating body.
  • the heat sink 545 can serve as a glue injection port, and the protruding portion of the glue injection port is received in the heat dissipation groove 545, so that the size of the bracket 54 in the direction of the vertical light exit surface 501. Reduced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne une source de lumière à DEL (51), un module de DEL (50), un module de rétroéclairage (20) et un dispositif électronique. La source de lumière à DEL (51) comprend un illuminant (53), un support (54) et des pièces polaires (55), le support (54) étant pourvu d'une surface d'émission de lumière (501), l'illuminant (53) étant encapsulé dans le support (54) et la lumière émise par l'illuminant (53) étant émise à partir de la surface d'émission de lumière (501) ; les pièces polaires (55) comprenant une première pièce polaire (56) et une seconde pièce polaire (57), la première pièce polaire (56) comportant une première partie corps (561) et une première partie de brasage (562), la seconde pièce polaire (57) comportant une seconde partie corps (571) et une seconde partie de brasage (572), la première partie corps (561) et la seconde partie corps (571) étant encapsulées dans le support (54) et étant connectées électriquement à l'illuminant (53), la première partie de brasage (562) étant conçue pour s'étendre de la première partie corps (561) en direction de la surface d'émission de lumière (501), la seconde partie de brasage (572) étant conçue pour s'étendre de la seconde partie corps (571) en direction de la surface d'émission de lumière (501), la première partie de brasage (562) et la seconde partie de brasage (572) étant disposées au niveau d'une extrémité du support (54) adjacente à la surface d'émission de lumière (501), et la première partie de brasage (562) et la seconde partie de brasage (572) étant destinées à être brasées sur une carte de circuit imprimé (52). Un cordon de soudure de lampe de la source de lumière à DEL (51) a une taille réduite sans réduire la stabilité de brasage.
PCT/CN2019/072192 2018-01-31 2019-01-17 Source de lumière à del, module de del, module de rétroéclairage et dispositif électronique WO2019149084A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201820183656.5 2018-01-31
CN201820183656.5U CN208397717U (zh) 2018-01-31 2018-01-31 一种led光源、led模组、背光模组及一种电子装置

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WO2019149084A1 true WO2019149084A1 (fr) 2019-08-08

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1912701A (zh) * 2005-08-10 2007-02-14 群康科技(深圳)有限公司 液晶显示器
CN101128076A (zh) * 2007-09-14 2008-02-20 潍坊中微光电科技有限公司 一种led光源的制造方法
US20120140512A1 (en) * 2007-02-16 2012-06-07 Au Optronics Corporation Backlight Module and a Wire Positioning Device Thereof
CN204834975U (zh) * 2015-07-01 2015-12-02 乐清市健坤接插件有限公司 一种电连接器及应用此电连接器的led球泡灯
CN205429005U (zh) * 2015-11-16 2016-08-03 光明国际（镇江）电气有限公司 Led封装结构
US20160281974A1 (en) * 2014-04-04 2016-09-29 Chang Hwan SONG Flexible led substrate device
CN207796762U (zh) * 2018-02-01 2018-08-31 广东欧珀移动通信有限公司 一种led光源、led模组、背光模组及一种电子装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1912701A (zh) * 2005-08-10 2007-02-14 群康科技(深圳)有限公司 液晶显示器
US20120140512A1 (en) * 2007-02-16 2012-06-07 Au Optronics Corporation Backlight Module and a Wire Positioning Device Thereof
CN101128076A (zh) * 2007-09-14 2008-02-20 潍坊中微光电科技有限公司 一种led光源的制造方法
US20160281974A1 (en) * 2014-04-04 2016-09-29 Chang Hwan SONG Flexible led substrate device
CN204834975U (zh) * 2015-07-01 2015-12-02 乐清市健坤接插件有限公司 一种电连接器及应用此电连接器的led球泡灯
CN205429005U (zh) * 2015-11-16 2016-08-03 光明国际（镇江）电气有限公司 Led封装结构
CN207796762U (zh) * 2018-02-01 2018-08-31 广东欧珀移动通信有限公司 一种led光源、led模组、背光模组及一种电子装置

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