WO2013189157A1 - 液晶显示装置及液晶屏模组 - Google Patents

液晶显示装置及液晶屏模组 Download PDF

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Publication number
WO2013189157A1
WO2013189157A1 PCT/CN2012/086589 CN2012086589W WO2013189157A1 WO 2013189157 A1 WO2013189157 A1 WO 2013189157A1 CN 2012086589 W CN2012086589 W CN 2012086589W WO 2013189157 A1 WO2013189157 A1 WO 2013189157A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
printed circuit
liquid crystal
flexible printed
sub
Prior art date
Application number
PCT/CN2012/086589
Other languages
English (en)
French (fr)
Inventor
刘健
Original Assignee
上海中航光电子有限公司
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 上海中航光电子有限公司 filed Critical 上海中航光电子有限公司
Publication of WO2013189157A1 publication Critical patent/WO2013189157A1/zh

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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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09081—Tongue or tail integrated in planar structure, e.g. obtained by cutting from the planar structure
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display
    • H05K2201/10136—Liquid Crystal display [LCD]
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits

Definitions

  • Liquid crystal display device and liquid crystal panel module The present application claims priority to Chinese Patent Application No. 201210208928. X, entitled “LCD Display Device”, filed on June 21, 2012, the entire contents of which are incorporated herein by reference. This is incorporated herein by reference.
  • the invention belongs to the field of liquid crystal display, and particularly relates to a liquid crystal display device and a liquid crystal display module.
  • the liquid crystal display device is a device in which the liquid crystal panel module and the backlight module are integrated, and has the advantages of low radiation, thin volume and low power consumption, and has been widely used in mobile phones, personal digital assistants, notebook computers, personal computers. And television and other fields.
  • the liquid crystal panel module 1 includes a liquid crystal panel 2 , a driving circuit 3 disposed on the liquid crystal panel 2 and electrically connected to the liquid crystal panel 2 , and A first flexible printed circuit board (FPC) 4 electrically connected to the liquid crystal panel 2.
  • the drive circuit 3 is an integrated circuit chip that supplies a drive signal to the liquid crystal panel 2.
  • the first flexible printed circuit board 4 is often referred to as a main flexible printed circuit board, and one end 4a thereof is electrically connected to the liquid crystal panel 2, and the other end 4b is provided with a data input interface 41 connected to an external circuit, and an external signal is driven through the data input interface 41.
  • the circuit 3 provides data to drive the liquid crystal panel 2 to operate.
  • the backlight module 5 includes a backlight plastic frame 6 , a second flexible printed circuit board 7 disposed on the backlight plastic frame 6 , and a second A light source 8 on the second flexible printed circuit board 7 and electrically connected to the second flexible printed circuit board 7.
  • the second flexible printed circuit board 7 is often referred to as a sub-flexible printed circuit board, and the light source 8 provides the desired light to the liquid crystal panel 2 shown in FIG.
  • the first flexible printed circuit board 4 and the second flexible printed circuit board 7 are separately fabricated by a cutting process.
  • the second flexible printed circuit board 7 is mostly L-shaped or T-shaped (T-type is taken as an example), and the first flexible printed circuit board 4 and the backlight in the liquid crystal panel module 1 are combined.
  • the end portions 71 of the second flexible printed circuit board 7 in the module 5 are connected together to form a liquid crystal display module (LCM).
  • LCD liquid crystal display module
  • the second flexible printed circuit board 7 can be fabricated in two ways: Method 1, L-type or T-type second flexible printed circuit board 7 - sub-cutting, but this will inevitably lead to the layout of large flexible printed circuit boards The rate is lower, that is, the number of the second flexible printed circuit boards that can cut the L-shaped or T-shaped on a large flexible printed circuit board is small, resulting in a higher raw material cost of the second flexible printed circuit board; In order to increase the layout rate of the flexible printed circuit board to reduce the raw material cost of the second flexible printed circuit board, as shown in FIG. 3, the second flexible printed circuit board 7 is cut twice, and the two cut portions are respectively "I" type.
  • the first flexible printed circuit board 4 is electrically connected, but this will inevitably add a soldering process to the second flexible printed circuit board 7, and since the second flexible printed circuit board 7 is soldered, there is a short circuit due to poor soldering. Or interrupted wind Circuit connected Reliability is not high.
  • the technical problem to be solved by the present invention is to increase the layout rate of the flexible printed circuit board to reduce the raw material cost of the flexible printed circuit board under the premise of ensuring the reliability of the circuit connection.
  • the present invention provides a liquid crystal display device, including:
  • the liquid crystal panel module includes a liquid crystal panel and a first flexible printed circuit board electrically connected to the liquid crystal panel, the first flexible printed circuit board is provided with a segmented edge and defined by the segmented edge a folding portion, the folding portion has a free end and a fixed end, and the folding portion includes at least a first sub-folding portion;
  • the backlight module includes a light source and a second flexible printed circuit board or a hard printed circuit board electrically connected to the light source, a free end of the first sub-folding portion and the second flexible printed circuit
  • the board or hard printed circuit board is electrically connected.
  • the folded portion is L-shaped or rectangular.
  • the second flexible printed circuit board has a '1' shape.
  • the light source is an LED.
  • the LEDs and the free ends of the first sub-folding portions are respectively disposed on opposite sides of the second flexible printed circuit board.
  • the second flexible printed circuit board or hard printed circuit board is soldered to the free end of the first sub-folded portion.
  • a first gold finger is disposed on the second flexible printed circuit board or the hard printed circuit board, and a second gold finger is disposed on the free end of the first sub-folding portion, the first gold finger The second gold finger is electrically connected.
  • the liquid crystal display device further includes a touch screen and a third flexible printed circuit board electrically connected to the touch
  • the folding portion further includes a second sub-folding portion, and the second sub-folding portion The free end is electrically connected to the third flexible printed circuit board.
  • the third flexible printed circuit board is soldered to the free end of the second sub-folded portion.
  • a third gold finger is disposed on the third flexible printed circuit board, and a fourth gold finger is disposed on the free end of the second sub-folding portion, the third gold finger and the fourth gold finger Electrical connection.
  • the split edge is provided with a crack stop at a fixed end of the fold portion to prevent the fold portion from being detached from the first flexible printed circuit board.
  • the width of the folded portion is greater than or equal to 1 mm.
  • the free end length of the first sub-folding portion is less than or equal to the free end length of the first flexible printed circuit board.
  • a liquid crystal panel module comprising a liquid crystal panel and a first flexible circuit board electrically connected to the liquid crystal panel, comprising: the first flexible circuit board is provided with a dividing edge and a folding portion defined by the dividing edge, The folding portion has a self From the end and the fixed end, the free end of the folded portion is for electrical connection with other circuit boards in the liquid crystal display device.
  • the folding portion includes at least a first sub-folding portion, and the free end of the first sub-folding portion is electrically connected to the second flexible circuit board or the hard printed circuit board of the backlight module in the liquid crystal display device .
  • a second gold finger is disposed on the free end of the first sub-folding portion, and the second gold finger is disposed on the second flexible printed circuit board or the first gold finger disposed on the hard printed circuit board Electrical connection.
  • the folding portion further includes a second sub-folding portion, and the free end of the second sub-folding portion is electrically connected to the third flexible circuit board of the touch screen in the liquid crystal display device.
  • a fourth gold finger is disposed on the free end of the second sub-folding portion, and the fourth gold finger is electrically connected to the third gold finger disposed on the third flexible printed circuit board.
  • the split edge is provided with a crack stop at a fixed end of the fold portion to prevent the fold portion from being detached from the first flexible printed circuit board.
  • the present invention has the following advantages:
  • the liquid crystal display device comprises a liquid crystal display module and a backlight module.
  • the first flexible printed circuit board of the liquid crystal display module is provided with a dividing edge, and the dividing edge defines a folding portion and a folding portion.
  • the number of the at least one is a first sub-folding portion, and the free end of the first sub-folding portion is folded to electrically connect with the second flexible printed circuit board in the backlight module, thereby realizing the liquid crystal screen module.
  • the first sub-folding portion corresponds to an "I"-type portion of the existing T-type or L-type second flexible printed circuit board, so that the second flexible printed circuit board only needs to have the existing T-shaped or L-shaped second flexible printing
  • the "one" portion of the circuit board can realize the connection between the first flexible circuit board and the second flexible circuit board, thereby simplifying the structure of other flexible circuit boards connected to the first flexible printed circuit board, so that other flexibility
  • the printed circuit board can be formed by one cut, which improves the layout rate of the flexible printed circuit board, reduces the raw material cost of the flexible printed circuit board in the liquid crystal display device, and at the same time avoids the welding of the flexible printed circuit board by multiple parts. The risk of short circuiting or interruption of the circuit improves the reliability of the circuit connection.
  • the folding portion may further include a second sub-folding portion to provide a connection channel for the connection of the first flexible printed circuit board and other circuit boards in the liquid crystal display device to realize the first flexible printed circuit board and other circuit boards Electrical connection, in the specific application, the free end of the second sub-folding portion can be folded to connect it to other circuit boards, so that other circuit boards can be arranged in a relatively simple shape, such as "one"
  • the font type when other boards are flexible printed circuit boards, can improve the layout rate of the flexible printed circuit board and reduce the raw material cost of other boards.
  • the other circuit board may be a flexible printed circuit board that is electrically connected to the touch screen.
  • FIG. 1 is a schematic structural view of a liquid crystal panel module in a liquid crystal display device
  • FIG. 2 is a schematic structural view of a backlight module in a liquid crystal display device
  • FIG. 3 is a schematic view of a second flexible printed circuit board in the backlight module shown in FIG. 2;
  • FIG. 4 is a schematic structural view of a liquid crystal display module in an embodiment of the present invention
  • 5 is a first schematic view of the first flexible printed circuit board of the liquid crystal display module shown in FIG. 4
  • FIG. 6 is a second schematic view of the first flexible printed circuit board of the liquid crystal display module shown in FIG.
  • FIG. 7 is a schematic view 3 of the first flexible printed circuit board in the liquid crystal panel module shown in FIG. 4;
  • FIG. 8 is a schematic structural view of a backlight module in an embodiment of the present invention.
  • Figure 9 is a schematic view showing the first flexible printed circuit board and the second flexible printed circuit board electrically connected
  • Figure 10 is a block diagram showing the structure of a liquid crystal display device in another embodiment of the present invention.
  • the technical problem to be solved by the present invention is to improve the layout rate of the flexible printed circuit board to reduce the raw material cost of the flexible printed circuit board under the premise of ensuring the reliability of the circuit connection.
  • the inventors propose to provide a split side on a first flexible printed circuit board in a liquid crystal panel module, and a folded portion is defined by the divided side, the folded portion having a free end and a fixed end, Folding the free end of the folding portion can be electrically connected with the second flexible printed circuit board in the backlight module, thereby realizing the binding of the liquid crystal panel module and the backlight module.
  • the folded portion corresponds to an "I" type portion in the existing T-type or L-type second flexible printed circuit board
  • the second flexible printed circuit board in the present invention is equivalent to the existing T-shaped or L-shaped second
  • the "one" portion of the flexible printed circuit board because the second flexible printed circuit board is cut once and has a high flexible printed circuit board layout rate, reducing the raw material cost of the second flexible printed circuit board, The second flexible printed circuit board is not soldered, and there is no risk of short circuit or interruption of the circuit, which improves the reliability of the circuit connection.
  • the liquid crystal panel module 100 includes a liquid crystal panel 110 and a first flexible printed circuit board 120 electrically connected to the liquid crystal panel 110.
  • the first flexible printed circuit board 120 has a fixed end 120a electrically connected to the liquid crystal panel 110 and a free end 120b connected to an external circuit, and the fixed end 120a of the first flexible printed circuit board 120 can be passed through an anisotropic conductive film (ACF)
  • ACF anisotropic conductive film
  • a data input interface P is disposed on the free end 120b of the first flexible printed circuit board 120, such that the external circuit can provide a first signal to the liquid crystal panel 110 through the first flexible printed circuit board 120, the first signal including a scan driving signal, Data drive signals, clock signals, etc.
  • the LCD module 100 further includes a driving circuit (integrated circuit chip) 130.
  • the driving circuit 130 is disposed on the liquid crystal panel 110, and a chip on glass (Chip On Glass, COG for short) may be used.
  • the driving circuit 130 is connected to the liquid crystal panel 110 through an anisotropic conductive film, thereby electrically connecting the liquid crystal panel 110 and the driving circuit 130.
  • the peripheral circuit and electronic components (not shown) of the driving circuit 130 are placed on the first flexo On the brush circuit board 120, the electronic components mainly include capacitors, resistors, diodes, etc., and the electronic components are electrically connected to the driving circuit 130 through wires (not shown) on the first flexible printed circuit board 120.
  • FIG. 5 is a first schematic view of a first flexible printed circuit board in the liquid crystal panel module shown in FIG. 4, and FIG. 6 is a second schematic view of the first flexible printed circuit board in the liquid crystal panel module shown in FIG.
  • a schematic diagram 3 of the first flexible printed circuit board in the liquid crystal panel module is shown in FIG. 5, FIG. 6 and FIG. 7.
  • the first flexible printed circuit board 120 is provided with a dividing edge 121, and the dividing edge 121 defines a folding edge.
  • the portion 122 (including the first sub-folded portion 122a and the second sub-folded portion 122b) has a folded portion 122 defined by the divided side 121 that can be folded because the divided side 121 is non-closed.
  • the folded portion 122 has a fixed end 1221 (indicated by a broken line in the figure) and a free end 1222.
  • the fixed end 1221 is disposed on the first flexible printed circuit board 120, and the free end 1222 can be folded around the first flexible printed circuit board 120. .
  • the split side 121 can be die cut or cut on the first flexible printed circuit board 120 by a die. It will be appreciated by those skilled in the art that the split side 121 should be disposed in the non-wired area of the first flexible printed circuit board 120.
  • the folded portion 122 may be L-shaped (as shown in the first sub-folded portion 122a in FIGS. 5 and 6) or rectangular (as shown in the second sub-folded portion 122b in FIGS. 5, 6, and 7). Or as shown in the first sub-folded portion 122a in FIG. 7).
  • the fold portion 122 can also be other shapes suitable for cutting, not enumerated herein. When the shape of the folded portion 122 is complicated, it can be cut by laser.
  • the first flexible printed circuit board 120 is connected to an external circuit to receive various control signals, and then transmits the control signals to other circuit boards in the liquid crystal display device (including a hard printed circuit board and a flexible printed circuit board, such as a backlight module).
  • the circuit board electrically connected to the light source), therefore, the first flexible printed circuit board 120 is the most important circuit board in the entire liquid crystal display device.
  • the folding portion 122 can provide a connection channel for the connection between the first flexible printed circuit board 120 and other circuit boards in the liquid crystal display device, so as to realize electrical connection between the first flexible printed circuit board 120 and other circuit boards, in specific applications,
  • the free end 1222 of the folded portion 122 can be folded over to connect it to other boards, so that other boards can be arranged in a relatively simple shape, such as a "one" shape, when other boards are flexographically printed.
  • the layout rate of the flexible printed circuit board can be improved, and the raw material cost of other boards can be reduced.
  • the number of the folded portions 122 may be one or more, that is, the folded portion 122 includes the first sub-folded portion 122a, or further includes a second sub-turn Folding portion 122b, third sub-folding portion, etc.
  • the folded portion defining the electrical connection with the circuit board in the backlight module in the present invention is the first sub-folding portion 122a.
  • FIG. 8 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
  • the backlight module 200 includes a light source 210 and a second flexible printed circuit board 220 electrically connected to the light source 210.
  • the light source 210 is disposed at The number of light sources 210 disposed on the second flexible printed circuit board 220 and disposed on the second flexible printed circuit board 220 may be plural.
  • the backlight module 200 further includes a backlight plastic frame 230, and the second flexible printed circuit board 220 is disposed on the backlight plastic frame 230.
  • the second flexible printed circuit board 220 in order to increase the layout rate of the flexible printed circuit board to reduce the material cost of the second flexible printed circuit board, the second flexible printed circuit board 220 has a "one" shape, such that the second flexible printed circuit board 220 Can be cut at one time, and does not need The soldering connection; the light source 210 is an LED (Light Emitting Diode).
  • the liquid crystal panel module 100 and the backlight module 200 when the liquid crystal panel module 100 and the backlight module 200 are assembled together, the light emitting surface of the backlight module 200 faces the liquid crystal panel module 100 and the two are disposed in parallel with each other so as to be The LCD panel 100 provides backlighting.
  • the first flexible printed circuit board 120 in the LCD module 100 is electrically connected to the second flexible printed circuit board 220 in the backlight module 200, so that An electrical signal is provided for light source 210.
  • FIG. 9 is a schematic view showing the first flexible printed circuit board electrically connected to the second flexible printed circuit board, and the first sub-folded portion 122a (indicated by the shaded area) on the first flexible printed circuit board 120 is directed to the second flexible printed circuit board. 220 is folded until the free end 1222 of the first sub-folding portion 122a contacts the second flexible printed circuit board 220, and then the free end 1222 of the first sub-folding portion 122a is coupled to the second flexible printed circuit board 220. To achieve electrical connection between the first flexible printed circuit board 120 and the second flexible printed circuit board 220. Specifically, as shown in FIG. 6 and FIG.
  • a first gold finger 131 may be disposed on the second flexible printed circuit board 220 (the first gold finger 131 and the light source 210 are located on opposite sides of the second flexible printed circuit board 220 ), A second gold finger 132 is disposed on the free end 1222 of the first sub-folding portion 122a, and the first flexible printed circuit board 120 and the second flexible printed circuit board are realized by electrically connecting the first gold finger 131 and the second gold finger 132. 220 electrical connection.
  • the light source 210 and the free ends 1222 on the first sub-folding portion 122a may be respectively disposed on opposite sides of the second flexible printed circuit board 220.
  • the external circuit can transmit the second signal to the light source 210 by: transmitting the second signal to the first sub-folding portion 122a and then to the second flexible printed circuit electrically connected to the first sub-folding portion 122a.
  • the board 220 eventually reaches the light source 210.
  • the second signal includes a light source driving signal (e.g., a light source driving signal of the field sequential LCD), a power supply voltage signal, and the like.
  • the second flexible printed circuit board 220 in the backlight module may be replaced by a Printed Circuit Board (PCB).
  • PCB Printed Circuit Board
  • the liquid crystal display device further includes a touch screen 300 and a third flexible printed circuit board 310 electrically connected to the touch screen 300.
  • the touch screen 300 is disposed above the liquid crystal panel 110, and the backlight module 200 is disposed under the liquid crystal panel 110.
  • the liquid crystal panel 110 and the touch screen 300 can be adhered together as a whole (for example, the liquid crystal panel 110 and the touch screen 300 are adhered by using an adhesive tape or the like. Stick together).
  • One end of the third flexible printed circuit board 310 is electrically connected to the touch screen 300, and the other end is electrically connected to the first flexible printed circuit board 120 to receive a control signal of the external circuit. As shown in FIG.
  • the folded portion 122 on the first flexible printed circuit board 120 further includes a second The sub-folding portion 122b and the free end 1222 of the second sub-folding portion 122b are electrically connected to the third flexible printed circuit board 310.
  • the free end 1222 of the second sub-folded portion 122b can be soldered to the third flexible printed circuit board 310 to achieve electrical connection therebetween.
  • a third gold finger (not shown) is disposed on the third flexible printed circuit board 310, and a fourth gold finger 133 is disposed on the free end 1222 of the second sub-folding portion 122b.
  • the electrical connection between the first flexible printed circuit board 120 and the third flexible printed circuit board 310 can be achieved by electrically connecting the gold finger and the fourth gold finger 133. Therefore, the third flexible printed circuit board 310 can be disposed in a relatively simple shape, such as a "one" shape, which improves the layout rate of the flexible printed circuit board and reduces the material cost of the third flexible printed circuit board. It should be noted that the second sub-folding portion 122b may be disposed in any shape suitable for cutting, and is not limited to the drawings.
  • the external circuit can transmit the third signal to the touch screen 300 by: the third signal is first transmitted to the second sub-folding portion 122b and then to the third flexible printed circuit electrically connected to the second sub-folding portion 122b.
  • the board 310 finally reaches the touch screen 300.
  • the third signal includes a touch drive signal, a touch sense signal, a clock signal, a power supply voltage, and the like.
  • the first sub-folding portion 122a on the first flexible printed circuit board 120 is electrically connected to the second flexible printed circuit board 220 or the hard printed circuit board in the backlight module, so as to be The light source provides a control signal, and the second sub-folded portion 122b on the first flexible printed circuit board 120 is electrically coupled to the third flexible printed circuit board 310 to provide a control signal to the touch screen.
  • the split edge 121 may be provided with a crack stop 140 at the fixed end 1221 of the fold portion 122, and the split edge 121 terminates at the crack stop portion 140.
  • the crack stop 140 may be a circular hole or a circular-like hole; in addition, in order to make the free end 1222 of the folded portion 122 more easily electrically connected to other circuit boards, the width W of the folded portion 122 is greater than or equal to 1 mm.
  • the position of the folded portion 122 and the length of the free end of the folded portion 1222 can be flexibly set according to the relative position between the first flexible printed circuit board 120 and the other circuit boards in the liquid crystal display device.
  • the folded portion 122 may be disposed at an edge of the first flexible printed circuit board 120 (as shown by the first sub-folded portion 122a in FIG. 7), or may be disposed at the a non-edge region of a flexible printed circuit board 120 (as shown in the first sub-folded portion 122a and the second sub-folded portion 122b in FIGS.
  • the length L 2 of the free end 1222 of the folding portion may be smaller than the length of the free end 120b of the first flexible printed circuit board (as shown by the first sub-folding portion 122a and the second sub-folding portion 122b in FIGS. 5 and 6), Or as shown by the second sub-folded portion 122b in FIG. 7, it may be equal to the length L! of the free end 120b of the first flexible printed circuit board (as shown by the first sub-folded portion 122a in FIG. 7).
  • the length of the free end 120b of the first flexible printed circuit board refers to the distance between the fixed end 120a of the first flexible printed circuit board and the data input interface P, and the length of the free end 1222 of the folded portion is taken as an example of FIGS. 5, 6, and 7.
  • L 2 refers to the folded end fixed end 1221 and the divided side portion closest to the data input interface P and parallel to the fixed end 1221 (the divided side is composed of a plurality of divided side portions, and some divided side portions are parallel to the fixed end 1221, some The distance between the divided side portions and the fixed end 1221 is not parallel.
  • the present invention has the following advantages over the prior art:
  • the liquid crystal display device comprises a liquid crystal display module and a backlight module.
  • the first flexible printed circuit board of the liquid crystal display module is provided with a dividing edge, and the dividing edge defines a folding portion and a folding portion.
  • the number of the at least one is a first sub-folding portion, and the free end of the first sub-folding portion is folded to electrically connect with the second flexible printed circuit board in the backlight module, thereby realizing the liquid crystal screen module.
  • the first sub-folded portion corresponds to an "I"-type portion of the existing T-type or L-type second flexible printed circuit board
  • the second flexible printed circuit board in the present invention may be only the existing T-shaped or L-shaped portion a "one" shaped portion in the second flexible printed circuit board, so that the second flexible printed circuit board can be formed using only one cut and has a higher flexible printed circuit board layout ratio due to the simple structure, thereby reducing the second flexible printed circuit
  • the raw material cost of the circuit board in addition, avoids the risk of short circuit or interruption of the circuit existing in the second flexible printed circuit board by multi-part soldering, thereby improving the reliability of the circuit connection.
  • the folding portion may further include a second sub-folding portion to provide a connection passage for connecting the first flexible printed circuit board and other circuit boards in the liquid crystal display device to realize the first flexible printed circuit board and
  • the free end of the second sub-folding portion can be folded to connect it to other circuit boards, so that other circuit boards can be set to a relatively simple shape, such as " First, 'font type, when other circuit boards are flexible printed circuit boards, the layout rate of the flexible printed circuit board can be improved, and the raw material cost of other circuit boards can be reduced.
  • the other circuit boards can be A flexible printed circuit board that is electrically connected to the touch screen.
  • a folding portion is disposed on the first flexible printed circuit board in the liquid crystal panel module, and the fixed end of the folding portion keeps the folded portion and the first flexible circuit board in a connected state, and the turning
  • the free end of the folded portion can be electrically connected to other circuit boards after being folded, so that the structure of other flexible circuit boards included in the liquid crystal display device can be simplified, thereby reducing the number of times of cutting of the flexible circuit board and improving the flexible printed circuit board.
  • the typesetting rate achieves the purpose of reducing the cost of raw materials, and at the same time avoids the risk of short circuit or interruption of the circuit caused by multi-part soldering of the flexible circuit board, and ensures the reliability of the circuit connection.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Structure Of Printed Boards (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶显示装置及其液晶屏模组（100），其中液晶显示装置包括液晶屏模组（100）及背光模组（200），液晶屏模组（100）中的第一柔性印刷电路板（120）上设置分割边（121），由分割边（121）限定出翻折部（122），其至少包括第一子翻折部（122a），将第一子翻折部（122a）的自由端（1222）翻折可与背光模组（200）中的第二柔性印刷电路板（220）电连接。第一子翻折部（122a）相当于现有T型或L型第二柔性印刷电路板中的"|"型部分，使得第二柔性印刷电路板（220）可仅采用现有T型或L型第二柔性印刷电路板中的"——"字型部分，使得第二柔性印刷电路板（220）可一次切割形成，提高了柔性印刷电路板排版率，减少了原料成本，另外避免了第二柔性印刷电路板（220）由多部分焊接而成导致的电路短路或中断的风险，提高了电路连接的可靠性。

Description

液晶显示装置及液晶屏模组 本申请要求在 2012年 6月 21 日提交中国专利局、 申请号为 201210208928. X、 发明名 称为' '液晶显示装置"的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明属于液晶显示领域， 特别是涉及一种液晶显示装置及液晶屏模组。
背景技术
液晶显示装置是将液晶屏模组与背光模組配置成一体的装置， 它具有低辐射性、 体积 轻薄及耗电低等优点， 已被广泛应用于手机、 个人数字助理、 笔记本电脑、 个人电脑及电 视等领域。
图 1是液晶显示装置中液晶屏模组的结构简图， 如图 1所示， 液晶屏模组 1包括液晶 面板 2、 设置在液晶面板 2上并与液晶面板 2电连接的驱动电路 3及与液晶面板 2电连接 的第一柔性印刷电路板（Flexible Printed Circuit, 筒称 FPC ) 4。 驱动电路 3为一集成电路 芯片，其为液晶面板 2提供驱动信号。第一柔性印刷电路板 4常被称为主柔性印刷电路板， 其一端 4a与液晶面板 2电连接， 另一端 4b设有数据输入接口 41与外部电路连接，外部信 号通过数据输入接口 41给驱动电路 3提供数据以驱动液晶面板 2工作。
图 2是液晶显示装置中背光模組的结构筒图， 如图 2所示， 背光模組 5包括背光胶框 6、 设置在背光胶框 6上的第二柔性印刷电路板 7及设置在第二柔性印刷电路板 7上并与 第二柔性印刷电路板 7电连接的光源 8。 第二柔性印刷电路板 7常被称为副柔性印刷电路 板， 光源 8为图 1所示的液晶面板 2提供所需的光线。 结合图 1、 图 2所示， 第一柔性印 刷电路板 4与第二柔性印刷电路板 7是利用切割工艺分别制作而成。
结合图 1、 图 2所示， 第二柔性印刷电路板 7大多呈 L型或 T型 （图中以 T型为例）， 将液晶屏模组 1中的第一柔性印刷电路板 4与背光模组 5中的第二柔性印刷电路板 7的端 部 71连接在一起， 即可组成液晶显示模组（ Liquid Crystal Module, 简称 LCM )。
第二柔性印刷电路板 7可利用两种方式制作而成： 方式一、 L型或 T型第二柔性印刷 电路板 7—次切割而成， 但这势必会导致大张柔性印刷电路板的排版率较低， 即在一大张 柔性印刷电路板上可以切割出 L型或 T型的第二柔性印刷电路板的数量较少，造成第二柔 性印刷电路板的原料成本较高； 方式二、 为了提高柔性印刷电路板的排版率以减少第二柔 性印刷电路板的原料成本， 如图 3所示， 第二柔性印刷电路板 7分两次切割， 两个切割部 分分别为呈 " I "型的 7a及呈"一"字型的 7b， 然后再将两个切割部分 7a、 7b焊接在一起从 而形成完整的 L型或 T型第二柔性印刷电路板 7,切割部分 7a与图 1所示的第一柔性印刷 电路板 4电连接， 但这势必会使第二柔性印刷电路板 7增加一道焊接工序， 且由于第二柔 性印刷电路板 7是焊接而成， 存在因焊接不良而导致电路短路或中断的风险， 电路连接的 可靠性不高。
发明内容
本发明要解决的技术问题是在保证电路连接可靠性的前提下， 提高柔性印刷电路板排 版率以减小柔性印刷电路板的原料成本。
为解决上述问题， 本发明提供了一种液晶显示装置， 包括：
液晶屏模组， 所述液晶屏模组包括液晶面板和与所述液晶面板电连接的第一柔性印刷 电路板， 所述第一柔性印刷电路板设置有分割边及由所述分割边限定的翻折部， 所述翻折 部具有自由端和固定端， 且所述翻折部至少包括第一子翻折部；
背光模组， 所述背光模组包括光源和与所述光源电连接的第二柔性印刷电路板或硬印 刷电路板， 所述第一子翻折部的自由端与所述第二柔性印刷电路板或硬印刷电路板电连 接。
可选地， 所述翻折部呈 L形或长方形。
可选地， 所述第二柔性印刷电路板呈' '一"字型。
可选地， 所述光源为 LED。
可选地，所述 LED和所述第一子翻折部的自由端分别设置于所述第二柔性印刷电路板 的才目反的两面。
可选地， 所述第二柔性印刷电路板或硬印刷电路板与所述第一子翻折部的自由端焊接 在一起。
可选地， 所述第二柔性印刷电路板或硬印刷电路板上设置有第一金手指， 所述第一子 翻折部的自由端上设置有第二金手指， 所述第一金手指、 第二金手指电连接。
可选地， 所述液晶显示装置还包括触摸屏和与所述触摸展电连接的第三柔性印刷电路 板， 所述翻折部还包括第二子翻折部， 所述第二子翻折部的自由端与所述第三柔性印刷电 路板电连接。
可选地， 所述第三柔性印刷电路板与所述第二子翻折部的自由端焊接在一起。
可选地， 所述第三柔性印刷电路板上设置有第三金手指， 所述第二子翻折部的自由端 上设置有第四金手指， 所述第三金手指、 第四金手指电连接。
可选地， 所述分割边在所述翻折部的固定端处设置有止裂部， 以避免所述翻折部从所 述第一柔性印刷电路板上脱离。
可选地， 所述翻折部的宽度大于等于 1毫米。
可选地， 所述第一子翻折部的自由端长度小于或等于所述第一柔性印刷电路板的自由 端长度。
一种液晶屏模组， 包括液晶面板和与所述液晶面板电连接的第一柔性电路板， 包括： 所述第一柔性电路板设置有分割边及有所述分割边限定的翻折部， 所述翻折部具有自 由端和固定端， 所述翻折部的自由端用于与液晶显示装置中的其它电路板电连接。
可选地， 所述翻折部至少包括第一子翻折部， 所述第一子翻折部的自由端与液晶显 示装置中背光模组的第二柔性电路板或硬印刷电路板电连接。
可选地， 所述第一子翻折部的自由端上设置有第二金手指， 所述第二金手指与所述第 二柔性印刷电路板或硬印刷电路板上设置的第一金手指电连接。
可选地， 所述翻折部还包括第二子翻折部， 所述第二子翻折部的自由端与液晶显示装 置中触摸屏的第三柔性电路板电连接。
可选地， 所述第二子翻折部的自由端上设置有第四金手指， 所述第四金手指与所述第 三柔性印刷电路板上设置的第三金手指电连接。
可选地， 所述分割边在所述翻折部的固定端处设置有止裂部， 以避免所述翻折部从所 述第一柔性印刷电路板上脱离。
与现有技术相比， 本发明具有以下优点：
本发明所提供的液晶显示装置包括液晶屏模组及背光模组， 液晶屏模组中的第一柔性 印刷电路板上设置有分割边， 由所述分割边限定出翻折部， 翻折部的数量至少为一个， 其 为第一子翻折部， 将第一子翻折部的自由端翻折一下可与背光模组中的第二柔性印刷电路 板进行电连接， 实现了液晶屏模组与背光模組的绑定。 第一子翻折部相当于现有 T型或 L 型第二柔性印刷电路板中的 " I "型部分， 使得第二柔性印刷电路板仅需要具有现有 T 型 或 L型第二柔性印刷电路板中的 "一"字型部分， 即可实现第一柔性电路板与第二柔性电 路板的连接， 从而简化了与第一柔性印刷电路板连接的其它柔性电路板的结构， 使得其它 柔性印刷电路板通过一次切割即可形成， 提高了柔性印刷电路板的排版率， 降低了液晶显 示装置中柔性印刷电路板的原料成本， 同时， 避免了柔性印刷电路板由多部分焊接而成所 导致的电路短路或中断的风险， 提高了电路连接的可靠性。
另外， 翻折部还可包括第二子翻折部， 为第一柔性印刷电路板与液晶显示装置中的其 它电路板的连接提供一个连接通道， 以实现第一柔性印刷电路板与其它电路板的电连接， 具体应用时， 可将第二子翻折部的自由端翻折一下， 以将其连接到其它电路板， 这样， 其 它电路板可以设置成较为筒单的形状， 如"一"字型， 当其它电路板为柔性印刷电路板时， 可以提高柔性印刷电路板的排版率， 减少了其它电路板的原料成本。 作为其中一种应用， 所述其它电路板可为与触摸屏电连接的柔性印刷电路板。
附图说明
图 1是液晶显示装置中液晶屏模组的结构简图；
图 2是液晶显示装置中背光模组的结构简图；
图 3是图 2所示背光模组中一种第二柔性印刷电路板的示意图；
图 4是本发明的一个实施例中液晶展模组的结构简图； 图 5是图 4所示液晶屏模组中第一柔性印刷电路板的示意图一； 图 6是图 4所示液晶屏模组中第一柔性印刷电路板的示意图二；
图 7是图 4所示液晶屏模组中第一柔性印刷电路板的示意图三；
图 8是本发明的一个实施例中背光模组的结构简图；
图 9是第一柔性印刷电路板与第二柔性印刷电路板电连接的示意图；
图 10是本发明的另一实施例中液晶显示装置的结构简图。
具体实施方式
如前所述， 本发明要解决的技术问题是在保证电路连接可靠性的前提下， 提高柔性印 刷电路板排版率以减小柔性印刷电路板原料成本。
为解决上述问题，发明人提出，在液晶屏模组中的第一柔性印刷电路板上设置分割边， 由所述分割边限定出翻折部， 所述翻折部具有自由端和固定端， 将翻折部的自由端翻折一 下可与背光模组中的第二柔性印刷电路板进行电连接， 实现了液晶屏模组与背光模组的绑 定。 所述翻折部相当于现有 T型或 L型第二柔性印刷电路板中的 " I "型部分， 而本发明 中的第二柔性印刷电路板相当于现有 T型或 L型第二柔性印刷电路板中的 "一"字型部分， 由于第二柔性印刷电路板是一次切割而成且具有较高的柔性印刷电路板排版率， 减少了第 二柔性印刷电路板的原料成本， 另外， 第二柔性印刷电路板不是焊接而成， 不会存在电路 短路或中断的风险， 提高了电路连接的可靠性。
下面结合附图， 通过具体实施例， 对本发明的技术方案进行清楚、 完整的描述， 显然， 所描述的实施例仅仅是本发明的可实施方式的一部分， 而不是其全部。 根据这些实施例， 本领域的普通技术人员在无需创造性劳动的前提下可获得的所有其它实施方式， 都属于本 发明的保护范围。
图 4是本发明的一个实施例中液晶屏模组的结构简图， 如图 4所示， 液晶屏模组 100 包括液晶面板 110及与液晶面板 110电连接的第一柔性印刷电路板 120。 第一柔性印刷电 路板 120具有与液晶面板 110电连接的固定端 120a及与外部电路连接的自由端 120b, 可 通过各向异性导电膜 （ACF )将第一柔性印刷电路板 120的固定端 120a压接在液晶面板 110的表面上， 实现第一柔性电路板 120与液晶面板 110的电连接， 使电信号可以传送到 液晶面板 110。 第一柔性印刷电路板 120的自由端 120b上设有数据输入接口 P, 这样外部 电路可通过第一柔性印刷电路板 120向液晶面板 110提供第一信号， 所述第一信号包括扫 描驱动信号、 数据驱动信号、 时钟信号等。
液晶屏模组 100还包括驱动电路（集成电路芯片） 130, 在本发明的一个实施例中， 驱动电路 130设置在液晶面板 110上， 可采用玻璃覆晶结构（Chip On Glass, 简称 COG ), 通过各向异性导电膜将驱动电路 130连接到液晶面板 110， 进而实现液晶面板 110与驱动 电路 130的电连接。 驱动电路 130的外围电路及电子元件 （未图示） 需放置在第一柔性印 刷电路板 120上， 所述电子元件主要包括电容、 电阻、 二极管等， 这些电子元件通过第一 柔性印刷电路板 120上的走线（未图示） 电连接到驱动电路 130。
图 5是图 4所示液晶屏模组中第一柔性印刷电路板的示意图一， 图 6是图 4所示液晶 屏模组中第一柔性印刷电路板的示意图二， 图 7是图 4所示液晶屏模组中第一柔性印刷电 路板的示意图三，如图 5、图 6及图 7所示，第一柔性印刷电路板 120上设置有分割边 121 , 由分割边 121限定出翻折部 122 (包括第一子翻折部 122a、 第二子翻折部 122b ), 由于分 割边 121为非封闭式的， 因此， 由分割边 121所限定的翻折部 122可以翻折。 翻折部 122 具有固定端 1221 (图中用虛线表示）及自由端 1222, 固定端 1221设置在第一柔性印刷电 路板 120上， 自由端 1222可以绕着第一柔性印刷电路板 120翻折。 利用刀模在一块柔性 印刷电路板上冲切或切割形成第一柔性印刷电路板 120之后， 可再利用刀模在第一柔性印 刷电路板 120上冲切或切割出分割边 121。 本领域技术人员应当知晓的是， 分割边 121应 该设置在第一柔性印刷电路板 120的非走线区域。
翻折部 122可呈 L形（如图 5及图 6中的第一子翻折部 122a所示）或长方形（如图 5、 图 6及图 7中的第二子翻折部 122b所示或如图 7中的第一子翻折部 122a所示）。 当然，在 本发明的其它实施例中， 翻折部 122也可为其它适于切割的形状， 在此不 列举。 当翻 折部 122的形状较为复杂时， 可利用激光切割而成。
第一柔性印刷电路板 120与外部电路连接以接收多种控制信号， 然后再将控制信号传 送给液晶显示装置中的其它电路板 (包括硬印刷电路板及柔性印刷电路板， 例如背光模组 中与光源电连接的电路板）， 因此， 第一柔性印刷电路板 120是整个液晶显示装置中最重 要的电路板。 翻折部 122可为第一柔性印刷电路板 120与液晶显示装置中的其它电路板的 连接提供一个连接通道， 以实现第一柔性印刷电路板 120与其它电路板的电连接， 具体应 用时， 可将翻折部 122的自由端 1222翻折一下， 以将其连接到其它电路板， 这样， 其它 电路板可以设置成较为简单的形状， 如"一"字型， 当其它电路板为柔性印刷电路板时， 可 以提高柔性印刷电路板的排版率， 减少了其它电路板的原料成本。 根据需与第一柔性印刷 电路板 120电连接的电路板数量， 翻折部 122的数量可为一个或以上， 即翻折部 122包括 第一子翻折部 122a, 或者还包括第二子翻折部 122b、 第三子翻折部 ... ...等等。 本发明中定 义与背光模組中的电路板电连接的翻折部为第一子翻折部 122a。
图 8是本发明的一个实施例中背光模组的结构简图， 如图 8所示， 背光模组 200包括 光源 210及与光源 210电连接的第二柔性印刷电路板 220， 光源 210设置在第二柔性印刷 电路板 220上， 且设置在第二柔性印刷电路板 220上的光源 210数量可为多个。 背光模组 200还包括背光胶框 230， 第二柔性印刷电路板 220设置在背光胶框 230上。 在一个实施 例中， 为了提高柔性印刷电路板的排版率以减少第二柔性印刷电路板的原料成本， 第二柔 性印刷电路板 220呈"一"字型， 这样， 第二柔性印刷电路板 220可一次切割而成， 且不需 焊接连接； 光源 210为 LED ( Light Emitting Diode, 发光二极管）。
结合图 4、 图 8所示， 将液晶屏模组 100与背光模组 200组装在一起时， 将背光模组 200的出光面正对液晶屏模组 100且使两者平行相对设置， 以便为液晶屏模组 100提供背 光。 液晶屏模组 100与背光模组 200叠放在一起之后， 将液晶屏模组 100中的第一柔性印 刷电路板 120与背光模组 200中的第二柔性印刷电路板 220进行电连接， 以便为光源 210 提供电信号。
图 9是第一柔性印刷电路板与第二柔性印刷电路板电连接的示意图， 使第一柔性印刷 电路板 120上的第一子翻折部 122a (阴影区域表示）向第二柔性印刷电路板 220翻折直至 第一子翻折部 122a的自由端 1222与第二柔性印刷电路板 220接触， 然后将第一子翻折部 122a的自由端 1222与第二柔性印刷电路板 220垾接在一起， 以实现第一柔性印刷电路板 120与第二柔性印刷电路板 220的电连接。 具体地， 结合图 6、 图 8所示， 可在第二柔性 印刷电路板 220上设置第一金手指 131 (第一金手指 131与光源 210位于第二柔性印刷电 路板 220相反的两面）， 第一子翻折部 122a的自由端 1222上设置第二金手指 132 , 将第一 金手指 131、 第二金手指 132电连接即可实现第一柔性印刷电路板 120与第二柔性印刷电 路板 220的电连接。 在上述实施例中， 光源 210和第一子翻折部 122a上的自由端 1222可 分别设置于第二柔性印刷电路板 220的相反的两面。
这样， 外部电路可通过以下方式将第二信号传送给光源 210: 第二信号先传送到第一 子翻折部 122a, 然后传递到与第一子翻折部 122a电连接的第二柔性印刷电路板 220,最终 到达光源 210。 第二信号包括光源驱动信号 （如场序式 LCD的光源驱动信号）、 电源电压 信号等等。
在本发明的另一个实施例中， 上述背光模组中的第二柔性印刷电路板 220可用硬印刷 电路板 ( Printed Circuit Board, 简称 PCB )替代。
图 10是本发明的另一实施例中液晶显示装置的结构筒图， 如图 10所示， 液晶显示装 置还包括触摸屏 300及与触摸屏 300电连接的第三柔性印刷电路板 310。 触摸屏 300设置 在液晶面板 110上方， 背光模组 200设置在液晶面板 110下方， 可将液晶面板 110与触摸 屏 300以粘贴的方式粘连成一个整体（例如通过黏贴带等将液晶面板 110与触摸屏 300粘 连在一起）。 第三柔性印刷电路板 310的一端与触摸屏 300电连接， 另一端与第一柔性印 刷电路板 120电连接， 以接收外部电路的控制信号。 结合图 5、 图 6及图 7所示， 为实现 第三柔性印刷电路板 310与第一柔性印刷电路板 120的电连接， 第一柔性印刷电路板 120 上的翻折部 122还包括第二子翻折部 122b ,第二子翻折部 122b的自由端 1222与第三柔性 印刷电路板 310电连接。 例如， 可将第二子翻折部 122b的自由端 1222与第三柔性印刷电 路板 310焊接在一起， 以实现两者的电连接。 具体地， 第三柔性印刷电路板 310上设置有 第三金手指（未图示）， 第二子翻折部 122b的自由端 1222上设置有第四金手指 133 , 第三 金手指、 第四金手指 133电连接即可实现第一柔性印刷电路板 120与第三柔性印刷电路板 310的电连接。 因此， 第三柔性印刷电路板 310可以设置成较为简单的形状， 如"一"字型， 提高了柔性印刷电路板的排版率， 减少了第三柔性印刷电路板的原料成本。 需说明的是， 第二子翻折部 122b可以设置成任意适于切割的形状， 并不局限于附图。
这样， 外部电路可通过以下方式将第三信号传送给触摸屏 300: 第三信号先传送到第 二子翻折部 122b , 然后传递到与第二子翻折部 122b电连接的第三柔性印刷电路板 310, 最终到达触摸屏 300。 第三信号包括触摸驱动信号、 触摸感应信号、 时钟信号、 电源电压 等等。
在图 10所示的液晶显示装置中， 第一柔性印刷电路板 120上的第一子翻折部 122a与 背光模组中的第二柔性印刷电路板 220或硬印刷电路板电连接，以便为光源提供控制信号， 第一柔性印刷电路板 120上的第二子翻折部 122b与第三柔性印刷电路板 310电连接， 以 便为触摸屏提供控制信号。
在上述所有液晶显示装置的实施例中， 如图 5、 图 6及图 7所示， 为阻止分割边 121 的进一步开裂，以避免翻折部 122从第一柔性印刷电路板 120上脱离出来，可使分割边 121 在翻折部 122的固定端 1221处设置止裂部 140 ,分割边 121终止在止裂部 140。止裂部 140 可为圓孔或类似圓形的孔； 另外， 为了使翻折部 122的自由端 1222更容易与其它电路板 电连接， 翻折部 122的宽度 W大于等于 lmm。
在上述所有液晶显示装置的实施例中， 可根据液晶显示装置中第一柔性印刷电路板 120与其它电路板之间的相对位置来灵活设置翻折部 122的位置及翻折部自由端 1222长 度。如图 5、 图 6及图 7所示，翻折部 122可以设置在第一柔性印刷电路板 120的边缘 (如 图 7中的第一子翻折部 122a所示）， 也可以设置在第一柔性印刷电路板 120的非边缘区域 (如图 5及图 6中的第一子翻折部 122a及第二子翻折部 122b所示， 或如图 7中的第二子 翻折部 122b所示）。 翻折部自由端 1222的长度 L2可小于第一柔性印刷电路板自由端 120b 的长度 (如图 5及图 6中的第一子翻折部 122a及第二子翻折部 122b所示， 或如图 7中 的第二子翻折部 122b所示），也可等于第一柔性印刷电路板自由端 120b的长度 L! (如图 7 中的第一子翻折部 122a所示）。 第一柔性印刷电路板自由端 120b的长度 是指第一柔性 印刷电路板固定端 120a与数据输入接口 P之间的距离， 以图 5、 6、 7为例， 翻折部自由 端 1222的长度 L2是指翻折部固定端 1221与最靠近数据输入接口 P且平行于固定端 1221 的分割边部分（分割边由多条分割边部分组成， 某些分割边部分与固定端 1221 平行， 某 些分割边部分与固定端 1221不平行）之间的距离。 当翻折部自由端 1222的长度 L2小于第 一柔性印刷电路板自由端 120b的长度 L † (如图 5及图 6中的第一子翻折部 122a及第二 子翻折部 122b所示， 或如图 7中的第二子翻折部 122b所示）， 平行于固定端 1221的分割 边部分与数据输入接口 p之间存在间隔， 当翻折部自由端 1222的长度 L2等于第一柔性印 刷电路板自由端 120b的长度 L † (如图 7中的第一子翻折部 122a所示）， 平行于固定端 1221的分割边部分与数据输入接口 P之间不存在间隔。
综上所述， 与现有技术相比， 本发明具有以下优点：
本发明所提供的液晶显示装置包括液晶屏模组及背光模组， 液晶屏模组中的第一柔性 印刷电路板上设置有分割边， 由所述分割边限定出翻折部， 翻折部的数量至少为一个， 其 为第一子翻折部， 将第一子翻折部的自由端翻折一下可与背光模组中的第二柔性印刷电路 板进行电连接， 实现了液晶屏模组与背光模組的绑定。 第一子翻折部相当于现有 T型或 L 型第二柔性印刷电路板中的 " I "型部分，而本发明中的第二柔性印刷电路板可以仅是现有 T型或 L型第二柔性印刷电路板中的 "一"字型部分，因此第二柔性印刷电路板可以仅采用 一次切割形成且由于结构简单具有较高的柔性印刷电路板排版率， 从而减少了第二柔性印 刷电路板的原料成本， 另外， 且避免了第二柔性印刷电路板采用多部分焊接而成所存在的 电路短路或中断的风险， 提高了电路连接的可靠性。
另夕卜， 翻折部还可包括第二子翻折部， 以便为第一柔性印刷电路板与液晶显示装置中 的其它电路板的连接提供一个连接通道， 以实现第一柔性印刷电路板与其它电路板的电连 接， 具体应用时， 可将第二子翻折部的自由端翻折一下， 以将其连接到其它电路板， 这样， 其它电路板可以设置成较为简单的形状，如"一，'字型， 当其它电路板为柔性印刷电路板时， 可以提高柔性印刷电路板的排版率， 减少了其它电路板的原料成本。 作为其中一种应用， 所述其它电路板可为与触摸屏电连接的柔性印刷电路板。
本发明实施例中， 通过在液晶屏模組中的第一柔性印刷电路板上设置翻折部， 该翻折 部的固定端使得该翻折部与第一柔性电路板保持连接状态， 该翻折部的自由端在进行翻折 后可以实现与其它电路板的电连接， 从而可以简化液晶显示装置中包含的其它柔性电路板 的结构， 从而减少柔性电路板的切割次数， 提高柔性印刷电路板的排版率， 达到降低原料 成本的目的， 同时避免了柔性电路板采用多部分焊接形成所导致的电路短路或中断的风 险， 保证了电路连接的可靠性。
上述通过实施例的说明， 应能使本领域专业技术人员更好地理解本发明 , 并能够再现 和使用本发明。 本领域的专业技术人员根据本文中所述的原理可以在不脱离本发明的实质 和范围的情况下对上述实施例作各种变更和修改是显而易见的。 因此， 本发明不应被理解 为限制于本文所示的上述实施例，其保护范围应由所附的权利要求书来界定。

Claims

权 利 要 求
1、 一种液晶显示装置， 其特征在于， 包括：
液晶屏模组， 所述液晶屏模组包括液晶面板和与所述液晶面板电连接的第一柔性印刷 电路板， 所述第一柔性印刷电路板设置有分割边及由所述分割边限定的翻折部， 所述翻折 部具有自由端和固定端， 且所述翻折部至少包括第一子翻折部；
背光模组， 所述背光模组包括光源和与所述光源电连接的第二柔性印刷电路板或硬印 刷电路板， 所述第一子翻折部的自由端与所述第二柔性印刷电路板或硬印刷电路板电连 接。
2、 根据权利要求 1所述的液晶显示装置， 其特征在于， 所述翻折部呈 L形或长方形。
3、根据权利要求 1所述的液晶显示装置，其特征在于，所述第二柔性印刷电路板呈"一" 字型。
4、 根据权利要求 3所述的液晶显示装置， 其特征在于， 所述光源为 LED。
5、 根据权利要求 4所述的液晶显示装置， 其特征在于， 所述 LED和所述第一子翻折 部的自由端分别设置于所述第二柔性印刷电路板的相反的两面。
6、 根据权利要求 1 所述的液晶显示装置， 其特征在于， 所述第二柔性印刷电路板或 硬印刷电路板与所述第一子翻折部的自由端焊接在一起。
7、 根据权利要求 1 所述的液晶显示装置， 其特征在于， 所述第二柔性印刷电路板或 硬印刷电路板上设置有第一金手指， 所述第一子翻折部的自由端上设置有第二金手指， 所 述第一金手指、 第二金手指电连接。
8、 根据权利要求 1 所述的液晶显示装置， 其特征在于， 所述液晶显示装置还包括触 摸屏和与所述触摸屏电连接的第三柔性印刷电路板， 所述翻折部还包括第二子翻折部， 所 述第二子翻折部的自由端与所述第三柔性印刷电路板电连接。
9、 根据权利要求 8 所述的液晶显示装置， 其特征在于， 所述第三柔性印刷电路板与 所述第二子翻折部的自由端焊接在一起。
10、 根据权利要求 8所述的液晶显示装置， 其特征在于， 所述第三柔性印刷电路板上 设置有第三金手指， 所述第二子翻折部的自由端上设置有第四金手指， 所述第三金手指、 第四金手指电连接。
11、根据权利要求 1至 10任一项所述的液晶显示装置， 其特征在于， 所述分劇边在所 述翻折部的固定端处设置有止裂部， 以避免所述翻折部从所述第一柔性印刷电路板上脱 离。
12、 根据权利要求 1至 10任一项所述的液晶显示装置， 其特征在于， 所述翻折部的 宽度大于等于 1毫米。
13、 根据权利要求 1至 10任一项所述的液晶显示装置， 其特征在于， 所述翻折部的 自由端长度小于或等于所述第一柔性印刷电路板的自由端长度。
14、 一种液晶屏模组， 包括液晶面板和与所述液晶面板电连接的第一柔性电路板， 其 特征在于， 包括：
所述第一柔性电路板设置有分割边及由所述分割边限定的翻折部， 所述翻折部具有自 由端和固定端， 所述翻折部的自由端用于与液晶显示装置中的其它电路板电连接。
15、 如权利要求 14所述的液晶屏模组， 其特征在于， 所述翻折部至少包括第一子翻 折部， 所述第一子翻折部的自由端与液晶显示装置中背光模组的第二柔性电路板或硬印 刷电路板电连接。
16、 如权利要求 15 所述的液晶屏模组， 其特征在于， 所述第一子翻折部的自由端上 设置有第二金手指， 所述第二金手指与所述第二柔性印刷电路板或硬印刷电路板上设置的 第一金手指电连接。
17、 如权利要求 15 所述的液晶屏模组， 其特征在于， 所述翻折部还包括第二子翻折 部， 所述第二子翻折部的自由端与液晶显示装置中触摸屏的第三柔性电路板电连接。
18、 如权利要求 17所述的液晶屏模组， 其特征在于， 所述第二子翻折部的自由端上 设置有第四金手指， 所述第四金手指与所述第三柔性印刷电路板上设置的第三金手指电连 接。
19、 如权利要求 14-1 S任一项所述的液晶屏模组， 其特征在于， 所述分割边在所述翻 折部的固定端处设置有止裂部， 以避免所述翻折部从所述第一柔性印刷电路板上脱离。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030067577A1 (en) * 2001-10-09 2003-04-10 Hitachi, Ltd. Liquid crystal display device
CN1564056A (zh) * 2004-03-18 2005-01-12 友达光电股份有限公司 平面显示模块
CN101122715A (zh) * 2007-08-29 2008-02-13 友达光电股份有限公司 显示装置及其背光模组及其组装方法
CN102057321A (zh) * 2008-06-17 2011-05-11 三星电子株式会社 用于液晶显示器的背光单元

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202677019U (zh) * 2012-06-21 2013-01-16 上海中航光电子有限公司 液晶显示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030067577A1 (en) * 2001-10-09 2003-04-10 Hitachi, Ltd. Liquid crystal display device
CN1564056A (zh) * 2004-03-18 2005-01-12 友达光电股份有限公司 平面显示模块
CN101122715A (zh) * 2007-08-29 2008-02-13 友达光电股份有限公司 显示装置及其背光模组及其组装方法
CN102057321A (zh) * 2008-06-17 2011-05-11 三星电子株式会社 用于液晶显示器的背光单元

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