CN216901243U - Display device - Google Patents

Abstract

The utility model discloses a display device, comprising: display panel and backlight unit. Backlight unit includes the lamp plate, be provided with the binding post of two-way being qualified for the next round of competitions on the lamp plate, circuit design can all be carried out in binding post's both sides, binding post's both sides leading-out terminal can set up driver chip respectively, the multiplication of driver chip quantity on the single line lamp plate has been realized, need not add the overline circuit in order to bypass intensive circuit in the connection process simultaneously, the signal disturbance of overline has been avoided, binding post unilateral in the solution correlation scheme is qualified for the next round of competitions, the difficult problem of a plurality of driver chips of integration can't be realized to the individual layer circuit board.

Description

Display device

Technical Field

The utility model relates to the technical field of display, in particular to a display device.

Background

Due to the characteristics of high brightness, partition control, energy saving and environmental protection, a Light Emitting Diode (LED) lamp panel is widely used in a backlight module of a Liquid Crystal Display (LCD) device in recent years, and achieves an image Display effect with higher image quality.

The LED lamp panel is limited by the control capability of the driving chips, along with the increase of the number of the LED lamp panel partitions, a plurality of driving chips are generally required to be used for realizing more precise partition control, and the LED lamp panel of the single-layer circuit board is difficult to integrate a plurality of chips, so that the LED lamp panel needs to adopt a structure of a double-layer circuit board or a multi-layer circuit board, and the cost of circuit design and manufacture is increased.

SUMMERY OF THE UTILITY MODEL

In some embodiments of the present invention, there is provided a display device including:

a display panel for image display;

the backlight module is positioned on the light incident side of the display panel; the backlight module includes:

the lamp panel is used as a backlight source of the backlight module; the lamp panel comprises at least one wiring terminal; the wiring terminal is used for connecting the flexible flat cable;

an opening penetrating through the lamp panel is formed in the position, corresponding to the wiring terminal, of the lamp panel; the binding post includes: a socket and a plurality of solder pins; the plurality of welding pins are respectively electrically connected with the circuits at the edges of the two opposite sides of the light emergent side of the opening of the lamp panel; the socket sets up in the opening, and the inside circuit connection welding pin that is provided with of socket, socket deviate from one side of light-emitting side at the lamp plate and are provided with the socket for connect flexible flat cable.

The display device adopts the wiring terminal with the bidirectional outgoing line, the first driving chip and the second driving chip can be respectively connected to the two sides of the outgoing line end, the number of the driving chips on the OLED lamp panel of the single line layer is multiplied, meanwhile, the overline circuit does not need to be added in the connection process in order to bypass the dense line, the disturbance of an overline signal is avoided, the problem that the wiring terminal in the related scheme is outgoing on one side, and the single-layer circuit board cannot integrate a plurality of driving chips is solved.

In some embodiments of the utility model, the number of the welding pins at the edges of the two sides of the opening is the same, and the welding pins are arranged correspondingly in pairs; the welding pins arranged oppositely are electrically connected through the circuit in the socket, so that the number of the welding pins and the circuit in the socket can be reduced, and the cost is saved.

In some embodiments of the utility model, the lamp panel adopts a single-layer circuit board, so that the cost can be saved.

In some embodiments of the utility model, the lamp panel at least comprises a first driving chip and a second driving chip, and the first driving chip and the second driving chip are respectively arranged on two sides of the connecting terminal provided with the welding pins.

In some embodiments of the utility model, the solder pins comprise: a first input signal pin, a second input signal pin, a third input signal pin, a fourth input signal pin, a first output signal pin and a second output signal pin;

the first input signal pin and the second input signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the third input signal pin and the fourth input signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first output signal pin and the second output signal pin are arranged oppositely and are electrically connected through a circuit in the socket;

the driving chip includes: an input signal terminal and an output signal terminal; the input signal end of the first driving chip is connected with the first input signal pin, and the output signal end of the first driving chip is connected with the third input signal pin; and the input signal end of the second driving chip is connected with the fourth input signal pin, and the output signal end of the second driving chip is connected with the second output signal pin, so that the first driving chip and the second driving chip are connected in series.

In some embodiments of the present invention, the soldering pin further comprises: a plurality of first driving signal pins and a plurality of second driving signal pins; the first driving signal pin and the second driving signal pin which are oppositely arranged are electrically connected through a circuit in the socket;

the driving chip further includes: a plurality of driving signal terminals; the driving signal end of the first driving chip is connected with at least part of the first driving signal pins; and the driving signal end of the second driving chip is connected with at least part of the second driving signal pins.

In some embodiments of the present invention, the soldering pin further comprises: the power supply device comprises a first clock signal pin, a second clock signal pin, a first enable signal pin, a second enable signal pin, a first synchronous signal pin, a second synchronous signal pin, a first feedback signal pin, a second feedback signal pin, a first power supply signal pin, a second power supply signal pin, a plurality of first grounding signal pins and a plurality of second grounding signal pins;

the first clock signal pin and the second clock signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first enabling signal pin and the second enabling signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first synchronous signal pin and the second synchronous signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first feedback signal pin and the second feedback signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first power supply signal pin and the second power supply signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first grounding signal pin and the second grounding signal pin which are oppositely arranged are electrically connected through a circuit in the socket;

the driving chip further includes: the system comprises a clock signal end, an enable signal end, a synchronous signal end, a feedback signal end, a power supply signal end and a plurality of grounding signal ends;

the clock signal end of the first driving chip is connected with a first clock signal pin, the enable signal end of the first driving chip is connected with a first enable signal pin, the synchronous signal end of the first driving chip is connected with a first synchronous signal pin, the feedback signal end of the first driving chip is connected with a first feedback signal pin, the power supply signal end of the first driving chip is connected with a first power supply signal pin, and the ground signal end of the first driving chip is connected with a first ground signal pin;

the clock signal end of the second driving chip is connected with the second clock signal pin, the enabling signal end of the second driving chip is connected with the second enabling signal pin, the synchronous signal end of the second driving chip is connected with the first synchronous signal pin, the feedback signal end of the second driving chip is connected with the second feedback signal pin, the power supply signal end of the second driving chip is connected with the second power supply signal pin, and the grounding signal end of the second driving chip is connected with the second grounding signal pin.

In some embodiments of the utility model, the surface of the socket of the wiring terminal on the side departing from the light emergent side of the lamp panel protrudes out of the surface of the lamp panel; the socket of the socket is arranged on the side surface of the socket, so that the thickness of the lamp plate can be reduced.

In some embodiments of the present invention, the display device further comprises: the control panel, the control panel is used for providing control signal to driver chip, and the lamp plate is through connecting in the intraoral flexible flat cable connection control panel of socket.

In some embodiments of the present invention, the backlight module further comprises: the reflector plate is located on the light-emitting side of the lamp panel, and the diffuser plate is located on one side of the lamp panel and deviates from the diffuser plate and the optical diaphragm is located on one side of the diffuser plate and deviates from the reflector plate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a connection terminal provided by the present invention;

fig. 3 is a schematic cross-sectional view of a terminal provided in the present invention;

fig. 4 is a schematic top view of the lamp panel according to the present invention;

fig. 5 is a schematic diagram of a series connection of driving chips according to the present invention.

Wherein, 100-display panel, 200-backlight module, 11-liquid crystal layer, 12-lower polarizer, 13-upper polarizer, 14-array substrate, 15-color film substrate, 21-lamp panel, 22-wiring terminal, 23-diffuser plate, 24-reflector, 25-optical film, 210-metal layer, 211-driving chip, 212-circuit board, 213-light emitting diode, 214-substrate, 215-circuit layer, 216-solder mask, 217-first pad, 218-second pad, 219-insulating layer, 221-welding pin, 223-socket, 224-socket, 225-socket shell, 226-circuit, FCC-flexible flat cable, 211A-first driving chip, 211B-second driving chip, 221A-first enable signal bond pin, 221B-second enable signal bond pin, 226A-line, 226B-line.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.

Due to the characteristics of high brightness, divisible control, energy saving and environmental protection, Light Emitting Diode (LED) lamp panels are widely applied to backlight modules of Liquid Crystal Display (LCD) devices in recent years, and achieve image Display effects with higher image quality.

The number of partitions of the LED lamp panel is increased, the backlight source is subjected to finer partition control, the contrast of a display picture can be effectively improved, the control capability of a single driving chip is limited, and along with the increase of the number of partitions of the LED lamp panel, more partition control can be realized by using a plurality of driving chips. The circuit of LED lamp plate is walked line very densely to need to carry out trompil installation binding post on the lamp plate usually and be used for connecting outside control system, binding post unilateral is qualified for the next round of competitions among the relevant scheme, and the LED lamp plate of individual layer circuit board can't be designed to walk to bypass the dense region of circuit and trompil region, is difficult to a plurality of chips of integration. Therefore, the LED lamp panel needs to adopt a double-layer circuit board or a multi-layer circuit board structure for wiring design, and the design increases the number of driving chips and the cost of circuit design and manufacturing.

In view of this, the utility model provides a display device, which uses a connection terminal with two-way outgoing lines, so that the number of chips on an LED lamp panel of a single line layer can be doubled, and the cost can be saved.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention.

As shown in fig. 1, a display device provided in an embodiment of the present invention includes: a display panel 100 and a backlight module 200.

The display panel 100 is located on the light emitting side of the backlight module 200 for displaying images. The display panel 100 may be a liquid crystal display panel, and is generally designed in a rectangular or square shape, or in a circular or irregular shape when applied to a special-shaped display device.

The display panel includes: a liquid crystal layer 11, a lower polarizer 12, an upper polarizer 13, an array substrate 14 and a color film substrate 15.

The array substrate 14 and the color filter substrate 15 are arranged oppositely, and the liquid crystal layer 11 is located between the array substrate 14 and the color filter substrate 15. The array substrate 14 and the color filter substrate 15 serve as upper and lower substrates, and an electric field is applied to the liquid crystal layer 11 to deflect liquid crystal molecules, thereby modulating the transmittance of light and realizing brightness control.

The surface of the array substrate 14 near the liquid crystal layer 11 is usually provided with circuit layers fabricated by thin film process for providing driving signals. A color filter is generally disposed on a surface of the color filter substrate 15 near the liquid crystal layer 11, the color filter may include three colors of red, green, and blue, and is sequentially arranged in the entire display area of the color filter substrate 15, and after the incident light is selected by the color filter, the color of the emergent light is the same as the color of the color filter.

The lower polarizer 12 is located on one side of the array substrate 14 departing from the liquid crystal layer 11, the upper polarizer 13 is located on one side of the color film substrate 15 departing from the liquid crystal layer 11, the polarization direction of the upper polarizer 13 is perpendicular to that of the lower polarizer 12, and the polarizer can only transmit light rays with the polarization direction being the same as that of the polarizer.

The backlight module 200 is located at the light incident side of the display panel 100, and has a planar shape and a size that are the same as or similar to those of the display panel 100, so as to provide backlight for the entire display panel 100.

The backlight module 200 includes: lamp panel 21, diffuser plate 23, reflector sheet 24 and optical film 25.

The lamp panel 21 is generally located at the bottom of the backlight module 200 and serves as a light source of the backlight module 200. The backlight module can provide backlight for the whole display panel by adopting a mode of splicing one lamp panel or a plurality of lamp panels, and limitation is not made here. Meanwhile, the LED lamp panel can realize dynamic partition control on the light source, and the dynamic contrast of the display panel is improved. The lamp panel 21 is generally designed to have the same or similar shape and size as the display panel 100.

The lamp panel 21 includes a connection terminal 22, a circuit board 212, a light emitting diode 213, a first pad 217, and a second pad 218.

The circuit board 212, which is usually located at the bottom of the lamp panel 21, is used to provide driving signals, and its shape and size are usually designed to be the same as or similar to those of the display panel.

The circuit board 212 includes a substrate 214, a wiring layer 215, and a solder resist layer 216.

The base material 214 serves as a substrate of the circuit board 212 for supporting and fixing the wiring layer 215 and the solder resist layer 216. In the embodiment of the present invention, the substrate 214 may be a substrate material formed by combining the metal layer 210 and the insulating layer 219. Wherein metal level 210 is located the bottom of circuit board, can adopt metal material such as the better aluminium of thermal conductivity, and aluminium has coefficient of heat conductivity height, low price, easy fashioned advantage, is applicable to as the substrate material on the circuit board, is favorable to the heat dissipation of lamp plate. The insulating layer 219 is located between the metal layer 210 and the circuit layer 215, and resin and an insulating material obtained by mixing resin and a reinforcing material may be used, which is not limited herein.

The circuit layer 215 is disposed on the substrate 214, and is usually coated with a metal material with good electrical conductivity, such as metal copper, and patterned to form traces of the signal circuit.

The solder resist layer 216 is located on a side of the circuit layer 215 facing away from the substrate 214 and covers the surface of the circuit board 212. The solder resist layer 216 is generally made of an insulating material such as acrylic resin, epoxy resin, or silicone resin, and has a function of protecting the wiring layer. The surface of the solder resist layer 217 is provided with a plurality of windows through which the first pads 217 and the second pads 218 are electrically connected to the wiring layer 215.

The light emitting diode 213 is located on a side of the solder mask layer 216 facing away from the substrate 214, and the light emitting diode 213 has a plurality of chip electrodes, and the chip electrodes are soldered and fixed to the first pads 217.

In the embodiment of the present invention, the circuit board 212 is a single-layer circuit board, which is advantageous for cost control. At this moment, the lamp panel 21 further includes a connection terminal 22, and this connection terminal 22 is used for connecting a Flexible Flat Cable (FFC for short), so that the lamp panel can be connected to the control board through the FFC, and the partition control of the lamp panel is realized.

As shown in fig. 1, lamp panel 21 has an opening H that runs through lamp panel 21 at the position that sets up binding post 22, and second pad 218 sets up the edge in the relative both sides of opening H, and binding post 22 all is provided with welding pin 221 in relative both sides, and welding pin 221 welds with second pad 218, realizes the circuit intercommunication between binding post and the circuit board.

Fig. 2 is a schematic structural diagram of the connection terminal provided by the present invention.

In the embodiment of the present invention, as shown in fig. 2, the connection terminal 22 includes: pins 221 and sockets 223 are soldered. The soldering pins 221 are disposed on two sides of the socket 223, and the number of the soldering pins 221 on the two sides of the socket 223 is the same, and two of the soldering pins are arranged correspondingly.

Fig. 3 is a schematic cross-sectional view of a terminal provided by the present invention.

The soldering lead 221 may be made of a metal material with good conductivity, such as copper. One end of the solder pin 221 protrudes from the socket to connect with the second pad 218. The receptacle 223 is disposed within the opening H and, as shown in fig. 3, includes a receptacle housing 225 and wiring 226.

The wires 226 are located inside the jack housing 225, and the wires 226 may be metal wires or circuit traces buried inside the jack housing 225. In the embodiment shown in fig. 3, the soldering pins 221 oppositely disposed at both sides of the opening H are electrically connected through the wiring 226 inside the socket 223. Socket 223 runs through the opening H setting of lamp plate, and the socket still includes socket 224 in the one side that deviates from lamp plate light-emitting side, and this socket 224 is used for connecting FFC. In a specific implementation, the display device further comprises: and a control panel. The lamp plate needs to be connected with the control panel, receives the drive control signal of control panel to the drive lamp plate is luminous. The end of the FFC is usually provided with a golden finger, the FFC is inserted into a socket of the socket, so that the FFC and the lamp panel are communicated through a circuit, and then the FFC is connected with the control panel, and therefore the connection between the lamp panel and the control panel is achieved. The shape and size of the jack 224 needs to be designed to accommodate the size and dimensions of the plug of the FFC.

In some embodiments of the present invention, the surface of the socket 233 on the side away from the light emitting side of the lamp panel protrudes out of the surface of the lamp panel, so that the socket 224 can be disposed on the side surface of the socket, which is more convenient for the FFC to be led out, and avoids increasing the thickness of the backlight module.

Fig. 4 is a schematic top view of the lamp panel provided in the present invention.

In order to realize the integrative design of lamp driver, bind driver chip on the lamp plate. The lamp panel in the embodiment of the utility model adopts the single-layer circuit board, so the driving chip is arranged on the light emergent side of the lamp panel.

The driving chip is electrically connected with the circuit board, the lamp panel is connected with the control panel through the FFC, so that the control panel can provide a driving control signal for the lamp panel, and the driving chip drives the lamp panel to emit light. In order to cooperate with the local dimming technology, the light emitting diodes on the lamp panel are usually divided into a plurality of partitions, and the driving chip can individually control the brightness of each partition according to the current display image.

Along with the requirement of the current user on the picture quality of the display image is higher and higher, in order to realize the high-dynamic-range image display with higher quality, the lamp panel needs to be divided into more partitions, because the single-layer circuit board can only be wired on one side, and a wiring terminal needs to be installed on the lamp panel in an opening mode for connecting a control panel, the wiring terminal can only be wired on one side in the related scheme, therefore, a circuit can only be designed on one side edge at the opening of the lamp panel, the other three sides cannot be wired, if a plurality of driving chips are arranged, because the design of a line-crossing circuit is possibly needed to be carried out due to the limitation of the circuit, the difficulty of circuit design is increased, and the number of the partitions of the lamp panel is limited.

In the embodiment of the present invention, as shown in fig. 4, since the connection terminals 22 can be respectively led out at two opposite sides, the wiring design can be performed at two opposite sides of the opening of the lamp panel, and accordingly, one driving chip can be respectively bound at two sides of the opening. The driving chips may include at least a first driving chip 211A and a second driving chip 211B, and the first driving chip 211A and the second driving chip 211B are respectively disposed at both sides of the connection terminal 22. Because the wiring terminal of two-way being qualified for the next round of competitions is provided with on the lamp plate, can all carry out circuit design in wiring terminal's both sides, wiring terminal's both sides leading-out terminal can set up driver chip respectively, has realized the multiplication of driver chip quantity on the single line lamp plate, does not need to set up the overline circuit in order to bypass intensive circuit in the connection process simultaneously, has avoided overline signal disturbance, has solved the wiring terminal unilateral in the relevant scheme and is qualified for the next round of competitions, and the difficult problem that a plurality of driver chips of integration can't be realized to the individual layer circuit board.

As shown in fig. 4, in some embodiments, the number of the soldering pins 221 of the connection terminal 22 at both side edges of the opening is the same, and two are arranged correspondingly. The first driving chip 211A and the second driving chip 211B are respectively disposed at both sides of the connection terminal 22 where the soldering pin 221 is disposed, and the first driving chip 211A and the second driving chip 211B are respectively electrically connected with the soldering pin 221 at the side.

By using the wiring terminal 22 provided by the utility model, the number of the integrated driving chips on the lamp panel can be multiplied without adopting a double-layer circuit board or a multi-layer circuit board, and the manufacturing cost of the lamp panel is greatly reduced. For example, in a related scheme, a passive driving chip 7039 is used for driving and controlling a single-layer circuit board lamp panel, since a wiring terminal single-side outgoing line mode is adopted, only 32-area LED partitioning can be achieved at most, and 64-area LED partitioning can be achieved after the wiring terminal 22 provided by the utility model is adopted.

In specific implementation, the oppositely arranged welding pins 221 can be electrically connected through a circuit inside the socket 223, and through the arrangement, the first driving chip 211A and the second driving chip 211B can share at least part of control instructions, so that the number of the welding pins 221 and the number of the circuits inside the socket 223 are reduced, and the cost and the manufacturing difficulty of the connecting terminal are reduced. The number of the soldering pins 221 on both sides of the connection terminal 22 may be increased or decreased according to the actual use requirement, and is not limited herein.

Fig. 5 is a schematic diagram of a series connection of driving chips according to the present invention.

As shown in fig. 5, in an embodiment of the present invention, the soldering pin includes: a first input signal pin SDI1, a second input signal pin SDI2, a third input signal pin SDI3, a fourth input signal pin SDI4, a first output signal pin SDO1, and a second output signal pin SDO 2.

The first input signal pin SDI1 and the second input signal pin SDI2 are oppositely arranged, and the first input signal pin SDI1 and the second input signal pin SDI2 are electrically connected through a line in the socket 223; the third input signal pin SDI3 and the fourth input signal pin SDI4 are oppositely arranged, and the third input signal pin SDI3 and the fourth input signal pin SDI4 are electrically connected through a line in the socket 223; the first output signal pin SDO1 and the second output signal pin SDO2 are disposed opposite to each other, and the first output signal pin SDO1 and the second output signal pin SDO2 are electrically connected through a line in the socket 223.

The driving chip includes: an input signal terminal and an output signal terminal. An input signal end sdiA of the first driving chip 211A is connected with a first input signal pin SDI1, and an output signal end sdoA of the first driving chip 211A is connected with a third input signal pin SDI 3; an input signal terminal sdiB of the second driving chip 211B is connected to the fourth input signal pin SDI4, and an output signal terminal SDO2 of the second driving chip 211B is connected to the second output signal pin sdoB.

Further, as shown in fig. 5, the soldering pin further includes: a plurality of first driving signal pins (VLED1/VLED3/VLED5) and a plurality of second driving signal pins (VLED2/VLED4/VLED 6). The driving signal pins are used for driving the LED to be lighted, one first driving signal pin and one second driving signal pin are oppositely arranged, and the oppositely arranged first driving signal pin and the oppositely arranged second driving signal pin are electrically connected through a line in the socket 223.

Correspondingly, the driving chip further comprises: a plurality of driving signal terminals. The driving signal terminal (VLED1/VLED3) of the first driving chip 211A is connected with at least a part of the first driving signal pin (VLED1/VLED3/VLED 5); the driving signal terminals (VLED2/VLED4) of the second driving chip 211B are connected to at least a portion of the second driving signal pins (VLED2/VLED4VLED 6).

Further, as shown in fig. 5, the soldering pin further includes: the first clock signal pin SCLK1, the second clock signal pin SCLK2, the first enable signal pin CS1, the second enable signal pin CS2, the first synchronization signal pin VSYNC1, the second synchronization signal pin VSYNC2, the first feedback signal pin FBOUT1, the second feedback signal pin FBOUT2, the first power supply signal pin VCC1, the second power supply signal pin VCC2, a plurality of first ground signal pins (E1/E3/E5), and a plurality of second ground signal pins (E2/E4/E6).

The first clock signal pin SCLK1 and the second clock signal pin SCLK2 are disposed oppositely, and the first clock signal pin SCLK1 and the second clock signal pin SCLK2 are electrically connected through a line in the socket 223; the first enable signal pin CS1 and the second enable signal pin CS2 are disposed opposite to each other, and the first enable signal pin CS1 and the second enable signal pin CS2 are electrically connected through a line in the socket 223; the first synchronization signal pin VSYNC1 and the second synchronization signal pin VSYNC2 are disposed opposite to each other, and the first synchronization signal pin VSYNC1 and the second synchronization signal pin VSYNC2 are electrically connected through a line in the socket 223; the first feedback signal pin FBOUT1 and the second feedback signal pin FBOUT2 are oppositely arranged, and the first feedback signal pin FBOUT1 and the second feedback signal pin FBOUT2 are electrically connected through a line in the socket 223; the first power supply signal pin VCC1 and the second power supply signal pin VCC2 are oppositely arranged, the power supply signal is used for providing power for driving the chip to work, and the first power supply signal pin VCC1 and the second power supply signal pin VCC2 are electrically connected through a circuit in the socket 223; a first ground signal pin is disposed opposite a second ground signal pin, and the oppositely disposed first ground signal pin (E1/E3/E5) and second ground signal pin (E2/E4/E6) are electrically connected by wiring within the socket 223.

Correspondingly, the driving chip further comprises: the device comprises a clock signal end, an enable signal end, a synchronous signal end, a feedback signal end, a power supply signal end and a plurality of grounding signal ends.

The clock signal terminal of the first driving chip 211A is connected to the sclkA first clock signal pin SCLK1, the enable signal terminal csA of the first driving chip 211A is connected to the first enable signal pin CS1, the sync signal terminal VSYNC of the first driving chip 211A is connected to the first sync signal pin VSYNC1, the feedback signal terminal fboutA of the first driving chip 211A is connected to the first feedback signal pin FBOUT1, the power supply signal terminal vccA of the first driving chip 211A is connected to the first power supply signal pin VCC1, and the ground signal terminal (E1/E3/E5) of the first driving chip 211A is connected to the first ground signal pin (E1/E3/E5).

The clock signal terminal sclkB of the second driving chip 211B is connected to the second clock signal pin SCLK2, the enable signal terminal csB of the second driving chip 211B is connected to the second enable signal pin CS2, the sync signal terminal VSYNC B of the second driving chip 211B is connected to the first sync signal pin VSYNC2, the feedback signal terminal fboutB of the second driving chip 211B is connected to the second feedback signal pin FBOUT2, the power supply signal terminal vccB of the second driving chip 211B is connected to the second power supply signal pin VCC2, and the ground signal terminal (E2/E4/E6) of the second driving chip 211B is connected to the second ground signal terminal (E2/E4/E6).

Through setting up two-way binding post of being qualified for the next round of competitions, can realize establishing ties between first driver chip 211A and the second driver chip 211B, exert different drive signal according to the subregion of first driver chip 211A and second driver chip 211B, can double backlight unit's subregion to realize high dynamic image display. In specific implementation, the number and the type of the pins on the connection terminal may be set according to actual needs, and the embodiment shown in fig. 5 is only used as an example, and is not limited herein.

In an embodiment of the present invention, as illustrated in fig. 1, the display device further includes: a reflection sheet 24, a diffusion plate 23, and an optical film 25.

The diffusion plate 23 is located on the light-emitting side of the lamp panel 21, and is used for changing the traveling direction of the emergent light of the lamp panel 21, so that the emergent light is more uniform, and the shape and the size of the diffusion plate are generally designed to be the same as or similar to those of the display panel. In the diffusion plate, inorganic or organic light diffusion particles are usually added to a diffusion plate substrate (such as PMMA, PC, PS, PP, etc.), or light is adjusted by array arrangement of micro-feature structures on the surface of the substrate, so that the light is refracted, reflected, scattered, and the like in different directions, thereby changing the traveling route of the light, and realizing uniform surface light source emission of the light emitted from the lamp panel 21 through the diffusion plate.

The reflector sheet 24 is located on the surface of the light-emitting side of the lamp panel 21, and the reflector sheet 24 is provided with a plurality of openings for exposing the light emitting diodes 213. After the light that lamp plate 21 outgoing reaches the position at diffuser plate 23 place, partial light continues to advance toward the direction of emergent light after the diffuser plate 23 refraction, another partial light is incided 24 surfaces of reflector plate after diffuser plate 23's surface reflection in diffuser plate 23 department, reflector plate 24 is again to diffuser plate 23's direction outgoing after with this partial light reflection, through repeated reflection and refraction, can improve the utilization ratio of light, and can make the light mix more evenly.

The optical film 25 is located on a side of the diffuser plate 22 facing away from the lamp panel 21. The optical film 25 includes an angle selection film, a quantum dot film, a prism sheet, etc., and is used to further improve the uniformity of the light emitted from the backlight module and improve the backlight quality. For example, the angle selection film can increase reflection or increase reflection of incident light rays at a preset angle, and small-angle incident light rays can be increased reflection and large-angle incident light rays can be increased reflection aiming at the primary distribution of single LED emergent light rays, so that the light rays emitted by the angle selection film are more uniform. The quantum dot film can be arranged on a monochromatic light LED lamp panel, such as a blue light LED lamp panel, and emits green light and red light under the excitation of blue light, so that high-quality white light is mixed, and high color gamut coverage and original color of the display device are realized. In specific implementation, the optical film 25 may be selected and disposed according to actual requirements, and is not limited herein.

The present invention provides a display device including: display panel and backlight unit. Backlight unit includes the lamp plate, be provided with the binding post of two-way being qualified for the next round of competitions on the lamp plate, circuit design can all be carried out in binding post's both sides, binding post's both sides leading-out terminal can set up driver chip respectively, the multiplication of driver chip quantity on the single line lamp plate has been realized, need not add the overline circuit in order to bypass intensive circuit in the connection process simultaneously, the signal disturbance of overline has been avoided, binding post unilateral in the solution correlation scheme is qualified for the next round of competitions, the difficult problem of a plurality of driver chips of integration can't be realized to the individual layer circuit board.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A display device, comprising:

a display panel for image display;

the backlight module is positioned at the light incident side of the display panel; the backlight module includes:

the lamp panel is used as a backlight source of the backlight module; the lamp panel comprises at least one wiring terminal; the wiring terminal is used for connecting a flexible flat cable;

an opening penetrating through the lamp panel is formed in the position, corresponding to the wiring terminal, of the lamp panel; the connection terminal includes: a socket and a plurality of solder pins; the plurality of welding pins are respectively and electrically connected with the circuits at the edges of the two opposite sides of the light emergent side of the opening of the lamp panel; the socket set up in the opening, the inside line connection that is provided with of socket welding pin, the socket is in one side that the lamp plate deviates from the light-emitting side is provided with the socket for connect flexible flat cable.

2. The display device according to claim 1, wherein the number of the soldering pins located at both side edges of the opening is the same, and two soldering pins are arranged correspondingly; the oppositely arranged welding pins are electrically connected through a circuit in the socket.

3. The display device of claim 2, wherein the light panel further comprises:

a circuit board for providing a driving signal;

the light emitting diode is positioned on the circuit board and electrically connected with the circuit board;

wherein the circuit board comprises a plurality of first pads and a plurality of second pads; the first bonding pad is used for connecting the light emitting diode, and the second bonding pad is used for connecting the welding pin; the second bonding pads are arranged at the edges of two opposite sides of the opening;

the circuit board includes:

a substrate;

the circuit layer is positioned on one side, facing the display panel, of the substrate;

the solder mask layer is positioned on one side of the circuit layer, which is far away from the substrate;

the first pad and the second pad are arranged on the surface of the solder mask layer, and the first pad and the second pad are electrically connected with the circuit layer through the window of the solder mask layer.

4. The display device of claim 3, wherein the lamp panel further comprises a driver chip; the driving chip at least comprises a first driving chip and a second driving chip, and the first driving chip and the second driving chip are respectively arranged on two sides of the welding pin, wherein the connecting terminal is arranged on the two sides of the welding pin.

5. The display device of claim 4, wherein the soldering pin comprises: a first input signal pin, a second input signal pin, a third input signal pin, a fourth input signal pin, a first output signal pin and a second output signal pin;

the first input signal pin and the second input signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the third input signal pin and the fourth input signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the first output signal pin and the second output signal pin are arranged oppositely, and are electrically connected through a circuit in the socket;

the driving chip includes: an input signal terminal and an output signal terminal; an input signal end of the first driving chip is connected with the first input signal pin, and an output signal end of the first driving chip is connected with the third input signal pin; and the input signal end of the second driving chip is connected with the fourth input signal pin, and the output signal end of the second driving chip is connected with the second output signal pin.

6. The display device of claim 5, wherein the solder pin further comprises: a plurality of first driving signal pins and a plurality of second driving signal pins; the first driving signal pin and the second driving signal pin which are oppositely arranged are electrically connected through a circuit in the socket;

the driving chip further includes: a plurality of driving signal terminals; the driving signal end of the first driving chip is connected with at least part of the first driving signal pins; and the driving signal end of the second driving chip is connected with at least part of the second driving signal pins.

7. The display device of claim 5, wherein the solder pin further comprises: the power supply device comprises a first clock signal pin, a second clock signal pin, a first enable signal pin, a second enable signal pin, a first synchronous signal pin, a second synchronous signal pin, a first feedback signal pin, a second feedback signal pin, a first power supply signal pin, a second power supply signal pin, a plurality of first grounding signal pins and a plurality of second grounding signal pins;

the first clock signal pin and the second clock signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the first enabling signal pin and the second enabling signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the first synchronous signal pin and the second synchronous signal pin are arranged oppositely and are electrically connected through a circuit in the socket; the first feedback signal pin and the second feedback signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the first power supply signal pin and the second power supply signal pin are arranged oppositely, and are electrically connected through a circuit in the socket; the first grounding signal pin and the second grounding signal pin which are oppositely arranged are electrically connected through a circuit in the socket;

the driving chip further includes: the system comprises a clock signal end, an enable signal end, a synchronous signal end, a feedback signal end, a power supply signal end and a plurality of grounding signal ends;

a clock signal end of the first driving chip is connected with the first clock signal pin, an enable signal end of the first driving chip is connected with the first enable signal pin, a synchronous signal end of the first driving chip is connected with the first synchronous signal pin, a feedback signal end of the first driving chip is connected with the first feedback signal pin, a power supply signal end of the first driving chip is connected with the first power supply signal pin, and a ground signal end of the first driving chip is connected with the first ground signal pin;

the clock signal end of the second driving chip is connected with the second clock signal pin, the enable signal end of the second driving chip is connected with the second enable signal pin, the synchronous signal end of the second driving chip is connected with the first synchronous signal pin, the feedback signal end of the second driving chip is connected with the second feedback signal pin, the power supply signal end of the second driving chip is connected with the second power supply signal pin, and the ground signal end of the second driving chip is connected with the second ground signal pin.

8. The display device according to any one of claims 1 to 7, wherein a surface of the socket of the connection terminal on a side away from the light-emitting side of the lamp panel protrudes from a surface of the lamp panel; the socket of the socket is arranged on the side face of the socket.

9. The display device according to claim 8, wherein the display device further comprises: the control panel, the lamp plate through connect in flexible flat cable in the socket connects the control panel.

10. The display device according to any one of claims 1 to 7, wherein the backlight module further comprises:

the reflector plate is positioned on the light emergent side of the lamp panel;

the diffusion plate is positioned on one side, away from the lamp panel, of the reflector plate;

and the optical membrane is positioned on one side of the diffusion plate, which is far away from the reflection sheet.

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