WO2013159655A1 - Écran d'affichage à del et dispositif d'affichage à del - Google Patents

Écran d'affichage à del et dispositif d'affichage à del Download PDF

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Publication number
WO2013159655A1
WO2013159655A1 PCT/CN2013/074192 CN2013074192W WO2013159655A1 WO 2013159655 A1 WO2013159655 A1 WO 2013159655A1 CN 2013074192 W CN2013074192 W CN 2013074192W WO 2013159655 A1 WO2013159655 A1 WO 2013159655A1
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WO
WIPO (PCT)
Prior art keywords
led display
hole
heat dissipation
led
mask
Prior art date
Application number
PCT/CN2013/074192
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English (en)
Chinese (zh)
Inventor
兰侠
Original Assignee
北京金立翔艺彩科技股份有限公司
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 北京金立翔艺彩科技股份有限公司 filed Critical 北京金立翔艺彩科技股份有限公司
Publication of WO2013159655A1 publication Critical patent/WO2013159655A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
    • H05K7/20963—Heat transfer by conduction from internal heat source to heat radiating structure

Definitions

  • the present invention relates to the field of LED display, and more particularly to an LED screen and an LED display device. Background technique
  • LED display has become a symbol of urban information modernization.
  • information digitization and display technology it has been widely applied to banks, airports and stations. , stock exchange markets, customs, stadiums and stages.
  • the rear shell of the screen is considered to adopt the above-mentioned box structure. Due to the need to balance the waterproof problem, the rear shell has a large area and a large volume, and a fan can be placed in the box body to achieve heat dissipation by a strong discharge method, but the metal texture is large.
  • the back shell has the problems of large volume and heavy weight, which makes the LED display unit cumbersome and difficult to use and install.
  • a fan is added to the metal back shell, and the fan has a large power and a high rotation speed, and there is also a problem of high noise.
  • the harsh application environment makes the product itself windproof. On this basis, it is not possible to influence the viewer's proper effect after setting the light bar at intervals.
  • the high productivity requires the LED to optimize the design efficiency from the structure.
  • the horizontal direction or the left side is set.
  • the right side is provided with a protrusion protruding in the vertical direction to the rim of the mask, which is used to protect the LED lamp bead.
  • the LED display module is generally installed vertically or horizontally. The viewer will form a certain angle when viewing the display screen, and the ridges protruding from the mask are higher than the LED lamp beads, so that the viewer will block the LED lights when viewing the LED display module. The light from the beads affects the viewer's viewing of the display.
  • the light panel of the display module is directly fixed on the metal back plate, although the circuit behind the light board can be directly contacted with the metal back plate to facilitate the heat dissipation thereof, but due to the circuit If there is a chip component protruding surface, it is necessary to buckle the hole at the corresponding position on the metal back plate, so that the lamp board can be fixed on the metal back plate, so that the processing cycle of one button hole is long, and the processing precision is required. High, not conducive to mass production of LED display modules. Summary of the invention
  • the object of the present invention is to overcome the above drawbacks and to provide an LED display screen and an LED display device which have good visual effects, good heat dissipation performance, and are easy to produce and assemble.
  • An LED display screen comprising a mask, a light board, a thermal pad, a back plate, a control board and a casing, wherein the mask, the light board, the thermal pad and the back plate are sequentially stacked, and the casing covers the housing
  • the control panel is fixed on the backplane; the panel is provided with an LED lamp bead on a side facing the mask, and the panel is provided with a chip with a protruding surface on a side facing the thermal pad; the mask is disposed outside the panel a through hole for accommodating the LED lamp bead of the lamp board, a boss is disposed between the through hole of the outer surface of the mask; the heat conducting pad is sandwiched between the lamp board and the back board
  • the thermal pad is made of a heat conductive material, and the chip corresponding to the lamp plate is provided with a device receiving groove; the surface of the control plate is provided with a control chip, and the surface of the control plate is provided with a waterproof film from the inside to the outside.
  • the waterproof film wraps the chip on the surface of the control board, the glue layer is wrapped around the waterproof film;
  • the shell surface is provided with an air outlet hole and a heat dissipation hole, and the heat dissipation port is arranged on the side wall of the shell
  • the heat dissipation holes are correspondingly disposed on two opposite sidewalls of the housing on.
  • an upper end surface of the boss of the surface of the mask is higher than an LED lamp bead housed in the through hole; the shape of the boss is semi-elliptical or truncated, or cylindrical, or polygonal .
  • the periphery/edge of the thermal pad is provided with a soft edging; the edge of the thermal pad is further provided with a mask to install a positioning groove.
  • the thermal pad is made of a heat conductive plastic, and the soft edging is a soft plastic; the pad and the soft edging are integrally molded by two-color injection molding. Further, the surface of the control board is formed by a dipping process, and the thickness of the adhesive layer is
  • the waterproof film is formed by a vacuum coater coating.
  • the sidewall of the housing is further provided with a connector mounting hole;
  • the heat dissipation port of the housing includes a first heat dissipation port and a second heat dissipation port, and the first heat dissipation port is disposed in a horizontal direction opposite to the housing.
  • the second heat dissipation openings are disposed on the opposite side walls of the housing in a vertical direction.
  • a fan receiving cavity and/or a power receiving cavity are disposed in the housing; the housing is provided with an air outlet hole in the cavity wall of the corresponding fan receiving cavity, and a heat dissipation hole is disposed in the cavity wall corresponding to the power receiving cavity .
  • the housing is provided with a handle, and four corners of the housing are provided with a foot pad, and the foot pad is provided with an arc-shaped connecting section to form the handle.
  • the present invention also provides an LED display device comprising a connector, a connector set and a plurality of LED displays according to any one of claims 1-8; the connector set is disposed on the back panel of the LED display
  • the connecting member includes a positioning pin and a mounting seat; the mounting seat is provided with a connecting thread, the positioning pin is disposed at a side of the mounting seat; the connecting member includes a connecting body, and a bolt is disposed in a middle portion of the connecting body a mounting groove, a connecting seat is formed around the connecting body; the connecting seat is provided with a through hole, and the through hole is matched with a safety bolt, and the connecting seat body is further provided with a positioning concave hole at the side of the through hole; LED display Forming, by the splicing of the connector and the connector group, the LED display device, the safety bolt of the connector corresponds to the connection thread of the mounting socket of the screw connector group, and the positioning pin of the connector group is connected with the connector
  • the positioning recess of the body of the body is
  • the connecting body of the connecting body is provided with at least two positioning recesses on the side, the through hole of the connecting seat is stepped, the smaller end is matched with the safety bolt, and the connecting body of the connecting body is
  • the slot is provided with a rib, and the bolt mounting groove of the connecting body is elongated;
  • the safety bolt is provided with a stop boss at the end of the thread, and the safety bolt passes through the stop boss sleeve a through hole at the connector;
  • the side of the mounting seat is provided with at least two positioning pins;
  • the edge of the back panel of the LED display screen is provided with a stepped through hole,
  • the mounting seat includes a fastening end and a connecting end, and the connecting end passes through the stepped shape a through hole, the fastening end is limited by a step of the stepped through hole, the connecting end is provided with the connecting thread, the connecting thread is an external thread, and the external thread of the corresponding connecting end is provided with a nut locking;
  • the locating pin includes a pin and a bolt, and a corresponding through hole is formed in the edge of the back plate, the pin is inserted into the through hole from the side of the through hole of the back plate, and the bolt is screwed by the other side to fix the pin;
  • the end of the pin is a chamfered section, and the middle part is a columnar positioning section.
  • the tail portion is a socket portion, and the outer dimension of the socket portion is smaller than the outer dimension of the columnar positioning
  • the invention has the advantages that the mask with the convex surface on the surface can be used to better protect the LED lamp bead on the lamp board from being damaged by the collision, and the shielding of the light emitted by the LED lamp bead is reduced, and the shielding is increased.
  • the viewing angle of the LED improves the satisfaction of the viewer's viewing.
  • a thermal pad is added, so that the back plate is not required to be buckled due to the protruding chip behind the lamp plate, which greatly improves the production efficiency of the product.
  • the heat dissipation hole is arranged on the rear shell, and a heat dissipation port is also arranged around the bottom of the casing.
  • the whole casing is transparent, which helps the air convection inside and outside the casing, enhances the heat dissipation effect, and takes waterproof into consideration.
  • the problem is that the control panel is waterproofed so that it can meet the cooling requirements even without the use of a fan.
  • FIG. 1 is an exploded view of the structure of the LED display screen of the present invention
  • FIG. 2 is an exploded view showing the structure of a display module of the LED display screen of the present invention
  • FIG. 3 is a schematic structural view of a thermal pad of the LED display screen of the present invention.
  • FIG. 4 is a schematic structural view of a mask of the LED display screen of the present invention.
  • Figure 5 is a cross-sectional view showing a partial structure of a thermal pad of the LED display panel of the present invention.
  • Figure 6 is a cross-sectional view showing a partial structure of a mask of the LED display panel of the present invention.
  • Figure 7 is a cross-sectional view showing the structure of a control panel of the LED display panel of the present invention.
  • FIG. 8 is a schematic structural view of a housing of an LED display screen of the present invention.
  • Figure 9 is a plan view of the housing of the LED display screen of the present invention.
  • Figure 10 is a side view of the housing of the LED display screen of the present invention.
  • 1 is a rear view showing the structure of a single LED display screen in the LED display device of the present invention
  • Figure 12 is a side view of a back panel of a single LED display screen in the LED display device of the present invention.
  • Figure 13 is a schematic partial enlarged structure of Figure 12;
  • Figure 14 is a schematic view showing the combination of the LED display device of the present invention.
  • Figure 15 is a schematic view showing the structure of a connector of the LED display device of the present invention.
  • Connector body 4-1, connecting seat; 4-2, bolt mounting groove; 4-3, positioning groove; 4-4, safety bolt; 4-5, stop boss; 4-6, rib ; 5, control panel; 5-1, waterproof membrane; 5-2, glue layer;
  • the present invention relates to an LED display panel comprising a mask 2, a lamp panel 7, a thermal pad 8, a back panel 3, a control panel 5 and a housing 9.
  • the mask 2, the light board 7, the thermal pad 8, and the back board 3 are successively stacked to form a display module, and the housing 9 is fixed on the back board 3 with the control board 5 attached thereto.
  • the LED display module is sequentially laminated with the mask 2, the light board 7, the thermal pad 8 and the back plate 6.
  • the light board 7 is provided with an LED lamp bead on the side of the mask 2
  • the corresponding mask 2 is provided with a through hole 2-1, and the mask 2 is disposed outside the lamp board 7, and the through hole 2-1 is accommodated therein.
  • LED lamp beads serve the purpose of protecting LED lamp beads.
  • the other side of the lamp board 7, that is, the chip 7-1 having a protruding surface corresponding to the side facing the thermal pad 8 is provided, and the corresponding thermal pad 8 is provided with a device receiving groove 8-1, and the thermal pad 8 as a whole It is made of a heat-conducting material, so that the heat of the lamp board 7 can be effectively transmitted to the metal back plate 6, so that the temperature of the lamp board 7 is not too high, and the heat-dissipating heat-dissipating effect is exerted, and the heat-dissipating pad 8 is sandwiched between the light-emitting plates. Between the surface of the thermal pad 8 and the lamp plate 7 and between the back plate 6, a positioning hole/positioning post 8-3 for limiting is provided.
  • the thermal pad 8 of the present patent includes the first surface and the second surface opposite to each other.
  • heat conduction is performed.
  • the pad 8 is provided with a positioning post on the first surface corresponding to the lamp board 7.
  • the corresponding lamp board 7 is provided with a card hole, and the second surface of the heat conducting pad 8 is also provided with a positioning post 8-3 corresponding to the back plate 6.
  • a positioning hole is correspondingly arranged on the plate 6.
  • the thickness of the device on the surface of the thermal pad 8 is such that the thickness of the bit groove 8-1 is not less than the maximum height of the lamp plate 7 protruding from the component (usually the chip 7-1), thereby avoiding the processing of the back plate 6 in the original process. The processing cycle of the hole.
  • the periphery/edge of the thermal pad 8 is provided with a soft rim 8-4.
  • a soft edging 8-2 is provided around the thermal pad 8, and the thermal pad 8 can be made of a thermally conductive plastic as a whole.
  • the thermal pad 8 and the soft edging 8-2 are made of soft plastic/soft rubber, so that the thermal pad 8 and the soft edging 8-2 can be made by two-color injection molding, which has high production efficiency and greatly shortens the production man-hour.
  • a mask can be installed corresponding to the positioning groove 8-2 to facilitate the installation of the mask 2.
  • the through hole 2-1 of the mask 2 in the patent is arranged in a dot matrix manner corresponding to the LED lamp beads on the lamp board 7, and is further between the through holes 2-1.
  • the through hole 2-2 is provided, and the shape of the through hole 2-2 may be a semi-elliptical shape, or a truncated cone shape, or a cylindrical shape, or a polygonal prism shape.
  • the upper end surface of the boss 9-1 protrudes from the The mask 2 is higher than the LED lamp bead housed in the through hole 2-1 to better protect the LED lamp bead from being damaged by collision, and since the through hole 2-2 is only disposed in the through hole
  • the outer end of the four end positions of 2-1 reduces the occlusion of the light emitted by the LED lamp bead, increases the viewing angle of the LED display screen, and improves the satisfaction of the viewer's viewing.
  • FIG. 7 is a structure of a control board 5 provided by the present invention.
  • a control chip is disposed on a surface of the control board 5.
  • the surface of the control board 5 is provided with a transparent waterproof film 5-1 and a glue layer 5 from the inside to the outside. -2.
  • the control panel 5 directly performs coating and dipping treatment to form the waterproof membrane 5-1 and the adhesive layer 5-2, so that the control panel 5 can be waterproof.
  • the waterproof membrane 5-1 is provided, and then the rubber is immersed to form the adhesive layer 5 -2 , making the waterproof effect last longer, allowing the control panel to be in direct contact with water.
  • the thickness of the adhesive layer 5-2 is 0. 3- 0. 7 ⁇ , after a long period of research and testing, the best adhesive layer 5-2 thickness 0. 5 ⁇ .
  • Step 1 First, the IC or control chip is set on the control board.
  • the control board is used to control the control board, and then the control board is tested. If it is not qualified for maintenance, if the next step is qualified;
  • Step 2 The waterproofing film 5-1 is attached to the control panel. There are many ways to apply the film. In this embodiment, the coating is directly performed by a vacuum coating machine, and the coating time is 4-8 hours;
  • Step 3 After the coating, the control panel is tested for waterproofing. If the test fails, remove the waterproof membrane 5-1 on it and then proceed to step 2, if the test passes, go to step 4;
  • the stability of the waterproof membrane 5-1 is enhanced.
  • the thickness of the immersion is 0. 3-0.
  • the dipping in step 4 can be applied twice, the dipping is usually two consecutive dipping, the dipping time is 20 seconds, and the dipping is once passed through the oven.
  • the oven temperature can be set at 70-80 degrees Celsius. After baking, it achieves rapid solidification.
  • control panel After processing, the control panel can be in direct contact with water without worrying about the internal electricity of the control panel. _ Road structure.
  • all the circuit boards constituting the LED display such as the light board, the driving board, the control board and the power supply, which are easily short-circuited, are coated, dipped and potted, among which the light board, The control panel and control panel are coated and dipped, and the power supply is glued, so that the entire LED display can be directly in contact with water without the need for a cabinet to achieve lighter and thinner requirements.
  • the housing 9 is used in the present patent.
  • the housing 9 is placed on the rear of the LED display screen. Unlike the closed rear case of a conventional outdoor LED display, the surface of the housing 9 is provided in this patent.
  • the transmissive design will inevitably expose the device inside the cover to the outside, especially the problem of moisture and rain. Therefore, the inner device of the product should be waterproofed as described above.
  • the main components of the LED display screen are required to be covered in the housing 9, including the control board 5, the power supply module, etc., and at the same time, the wires inside and outside the communication LED display screen are required to be fixed, so that a power source is usually provided in the housing 9.
  • the housing cavity is provided with a fan receiving cavity in the housing 9 according to the heat dissipation requirement, and the heat dissipation hole 9-1 in the patent is disposed on the cavity wall of the housing 9 corresponding to the power receiving cavity, and the housing An air outlet hole 9-3 is provided in the wall of the corresponding fan receiving chamber.
  • the fan disposed in the heat receiving chamber of the heat fan can adopt a common fan blade type or a strong exhaust fan, and can be sent out from the heat dissipation port of the side wall of the casing 9 by sucking air, thereby achieving rapid heat dissipation.
  • the connector mounting hole 9-4 is provided on the side wall of the housing 9.
  • the housing 9 is provided with a heat dissipation port on the opposite side walls, and the optimal heat dissipation port is further divided.
  • the first heat dissipation port 9-5 and the second heat dissipation port 9-6 are as shown in FIG. 2 , wherein the first heat dissipation port 9-5 is disposed on the opposite left and right side walls of the housing 9 in the horizontal direction. 3, and the second heat dissipation openings 9-6 are disposed on the upper and lower side walls of the housing 9 in the vertical direction, so that the wind can penetrate the entire casing 9 during the heat dissipation process, and the heat absorption path is extended. Enhance heat dissipation.
  • a handle is further disposed on the housing 9.
  • the housing 9 is provided with a foot pad at four corners of the surface, and the arc pad is provided between the pads to form the The handle 9-3, the handle of such a structure, is generally more aesthetically pleasing, the handle is integrated into the housing 9, and the housing 9 is mounted on the LED display to provide a holding and lifting LED. The role of the display grip. _
  • the present invention also relates to an LED display device comprising a connector 4, a connector set 3-1 and a plurality of LED displays as described above, see Fig. 14.
  • the connector group 3-1 is required at the edge of the back plate 3, and preferably, the edge of the back plate 3 of the back plate that needs to be connected to the adjacent LED display module can be Set connector group 3-1.
  • the connector group 3_1 is disposed on the four corners of the backboard, and then can be connected from the four sides by fitting a connector body 4.
  • the back panel 3 of the four LED display modules are examples of the connector group 3_1 is disposed on the four corners of the backboard, and then can be connected from the four sides by fitting a connector body 4.
  • the structure of the connector group 3-1 in the present invention is shown in Figs. 12 and 13, which includes a positioning pin 3-2 and a mounting seat 3-7.
  • the mounting seat 3-7 is provided with a connecting thread, and a positioning pin 3-2 is further disposed on the side of the mounting seat 3-7.
  • the mounting seat 3-7 and the positioning pin 3-2 can be connected with a connecting member such as that shown in FIG.
  • the safety bolt 4-4 on the connecting seat 4-1 of the body 4 cooperates with the positioning groove 4-3 to realize the connection.
  • the positioning pin 3-2 can serve to provide positioning, guiding and limiting.
  • at least two positioning pins 3-2 are disposed on the side of the mounting seat 3-7, thereby also preventing the connecting body 4 from being The relative rotation of the backing plate 3 of the LED display module.
  • the mounting structure of the mounting base 3-7 is: the edge of the back panel 3 of the LED display module is provided with a stepped through hole, and the mounting seat 3-7 includes a fastening end and a connecting end, and the connecting end Passing through the stepped through hole, the fastening end is limited by the step of the stepped through hole, the connecting end is provided with the connecting thread, and the connecting thread is external thread 3-8 connecting end external thread setting There are nuts 3-9.
  • the mounting structure of the positioning pin 3-2 is: it includes a pin 3-3 and a bolt 3-4, and correspondingly, a through hole is also provided at the edge of the back plate, and the pin 3-3 is self-backed.
  • One side of the through hole of the plate is sleeved in the through hole, and the bolt 3-4 is screwed to the other side to fix the pin.
  • the end of the pin 3-3 is a chamfered section 3-5
  • the middle part is a columnar positioning section 3-6
  • the tail part is a socket section
  • the outer dimension of the sleeve section is smaller than Columnar positioning section 3-6 outer dimensions.
  • a specific bolt-mounting groove 4-2 is provided in the middle of the connector body 4, and the outer bolt can fix the entire connector body 4 to a position such as a wall surface through the bolt mounting groove 4-2.
  • a connecting seat 4-1 is formed around the connecting body 4, and each connecting seat 4-1 is correspondingly connected with a back plate 3 of an LED display module, and a reinforcing rib 4-6 is connected between the connecting blocks 4-1.
  • the stop boss 4 may be provided at the end where the safety bolt 4-4 is provided with a thread.
  • the back panel 3 of the LED display module of the present invention can be quickly and conveniently installed through a connector body 4 such as the structure here.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

La présente invention concerne un écran d'affichage à DEL et un dispositif d'affichage à DEL qui appartiennent au domaine technique des affichages à DEL. L'écran d'affichage à DEL comprend un masque (2), une carte de voyants (7), une plaque support thermo-conductrice (8), un panneau arrière (3), une carte de commande (5) et une coque (9). Le masque (2), la carte de voyants (7), la plaque support thermo-conductrice (8) et le panneau arrière (3) sont superposés dans cet ordre tandis que la coque (9) recouvre la carte de commande (5) et est fixée au panneau arrière (3). Le dispositif d'affichage DEL est composé d'une pluralité des écrans d'affichage à DEL susmentionnés qui sont connectés par des pièces de connexion et des groupes de pièces de connexion. L'utilisation du masque (2) qui est pourvu d'un bossage de fixation sur sa surface peut mieux protéger les cordons de soudure des voyants DEL sur la carte de voyants (7) et peut également réduire le blocage du rayon lumineux, augmentant de cette façon l'angle de vision de la DEL. En plus, la plaque support thermo-conductrice (8) est ajoutée sans la nécessité d'avoir des trous perforés dans le panneau arrière (3) à cause d'une puce surélevée au dos de la carte de voyants, et cela augmente grandement le rendement de fabrication des produits. Une coque arrière est équipée d'un trou de dissipation de chaleur et d'une ouverture de dissipation de chaleur, et toute la coque (9) est perméable, ce qui facilite la convection d'air à l'intérieur et à l'extérieur de la coque (9), et améliore l'effet de dissipation de chaleur. Par ailleurs, un traitement hydrofuge est effectué sur la carte de commande (5) afin de tenir compte du problème hydrofuge.
PCT/CN2013/074192 2012-04-28 2013-04-15 Écran d'affichage à del et dispositif d'affichage à del WO2013159655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210133759.8 2012-04-28
CN201210133759.8A CN102682669B (zh) 2012-04-28 2012-04-28 Led显示屏及led显示装置

Publications (1)

Publication Number Publication Date
WO2013159655A1 true WO2013159655A1 (fr) 2013-10-31

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US10248372B2 (en) 2013-12-31 2019-04-02 Ultravision Technologies, Llc Modular display panels
US10373535B2 (en) 2013-12-31 2019-08-06 Ultravision Technologies, Llc Modular display panel
US10706770B2 (en) 2014-07-16 2020-07-07 Ultravision Technologies, Llc Display system having module display panel with circuitry for bidirectional communication
US10891881B2 (en) 2012-07-30 2021-01-12 Ultravision Technologies, Llc Lighting assembly with LEDs and optical elements
EP3882896A4 (fr) * 2018-11-16 2022-08-03 Shenzhen Gloshine Technology Co., Ltd. Écran d'affichage à del

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CN103603848A (zh) * 2013-10-22 2014-02-26 张家港英瑞实业有限公司 一种新型注塑连接件
CN104361835A (zh) * 2014-10-21 2015-02-18 苏州合欣美电子科技有限公司 一种led显示屏降低led结温的方法
CN105427759B (zh) * 2016-01-12 2019-05-17 利亚德光电股份有限公司 显示屏组件及具有其的显示装置
WO2020066647A1 (fr) * 2018-09-25 2020-04-02 日本精機株式会社 Dispositif d'affichage
CN112037673B (zh) * 2020-09-16 2022-07-15 中航华东光电有限公司 一种微小型oled头显像源产品架构
CN115064090A (zh) * 2022-06-24 2022-09-16 深圳雷曼光电科技股份有限公司 一种led显示模组及显示屏

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