CN101645246B - Front-back-display liquid crystal display system and playing control method - Google Patents
Front-back-display liquid crystal display system and playing control method Download PDFInfo
- Publication number
- CN101645246B CN101645246B CN2009100423575A CN200910042357A CN101645246B CN 101645246 B CN101645246 B CN 101645246B CN 2009100423575 A CN2009100423575 A CN 2009100423575A CN 200910042357 A CN200910042357 A CN 200910042357A CN 101645246 B CN101645246 B CN 101645246B
- Authority
- CN
- China
- Prior art keywords
- panel
- module
- printed circuit
- liquid crystal
- grid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a front-back-display liquid crystal display system and a playing control method. The front-back-display liquid crystal display system comprises a printed circuit board, a first panel and a second panel, wherein the printed circuit board is integrated by a time schedule controller module and a gamma supply module; the printed circuit board is respectively connected with the first panel and the second panel by at least one flexible printed circuit board; a double-side luminous backlight module is arranged between the first panel and the second panel; and two paths of driving signals and voltages are simultaneously generated and respectively transmitted to the first panel and the second panel by controlling the common time schedule controller module and the gamma supply module on the printed circuit board, so that the first panel and the second panel arranged on the front side and the back side simultaneously display programs. The liquid crystal display system has the advantages of simple structure, higher integration and lower cost of the double-side driving control circuit.
Description
Technical field
The present invention relates to a kind of display device, relate in particular to a kind of liquid crystal display systems that can both show simple in structure, positive and negative and control method for playing back.
Background technology
Lcd products especially in large scale application facet such as LCD TV, displays, mainly still is shown as the master with single backlight, single face in the market.But it is, many as TV, the display product of propaganda, show tools with two the back-to-back placements realization of like product double-sided display like large supermarket, airport, multimedia teaching chamber etc. for special application scenario.This method has significant disadvantages: need two groups of backlight modules, two groups of drive controlling and signal processing module, two groups of independent power supplys power supplies and independently cable connect.
Current partial monopoly or product have been arranged is double-sided display, and comprising double side liquid crystal display (LCD), liquid crystal panel before and after this product generally all comprises combines back-to-back.Patent ZL200510108105.X (Granted publication CN 100378798C, applying date 2005.9.29) has proposed a kind of circuit of display driving and method, and uses panel display more than it.Shown in Figure 1A, its multiaspect display comprises load module 010, display panel module 300, and display panel module comprises first panel 121, second panel 122 and voltage switch circuit module 114 at least.For display image, load module 010 provides the data image that is shown on the display device 300 data to the data line of first panel 121/ or second panel 122.Voltage switch circuit module 114 is connected to second panel 122, make when this panel when closing, can predetermined voltage be provided to the data line of second panel 122.In more detail, shown in Figure 1B, the multiaspect display of this invention comprises controller module 100, first panel 121 and second panel 122.In order to drive first panel 121; To be provided on first panel 121 such as the data-driven of data multitasking module 112 with grid circuit module 113; Make under the control of data multitasking module 112 and grid circuit module 113; Can data-signal be sent to the data line 116 of first panel, these data-signals are to convert from 010 view data that provides of load module through controller module 100.In order to drive second panel 122; Provide data multitasking module 112 and grid circuit module 113 on second panel 122; And via bus 118, data multitasking module 112 and pliable printed circuit (FPC) 110 self-controller module 100 receives signals, these signals comprise to 112 data-signals that provide of data multitasking module and are used for the signal of grid circuit module 113.In addition, voltage switch circuit module 114 is arranged on second panel 122, to data line 117 predetermined voltage is provided with control.
More than design provides a kind of method that is used to drive multi-panel display device, but there is certain defective in it.Particularly when being applied to keep display with double faces while display data content; Its data multitasking module 112 and voltage switch circuit module 114 are redundant; Its complex structure; The double-side driving control circuit cost is high, the installation method when this patent is not pointed out how to carry out hardware arrangement and is used for display with double faces simultaneously.
As shown in Figure 2, patent ZL 200410083338.4 (CN 100370325C) has proposed a kind of installation method of double-sided LCD device.This double side liquid crystal display comprises backlight module 200; Lay respectively at first panel 121 and second panel 122 of both sides, backlight module 200 front and back, and hold the fringe region of LCD first panel 121 and second panel 122 and the protection framework (outer cover) 103 of backlight module 200.Be connected on a plurality of pliable printed circuits 110 and the respective edges surface that is positioned at backlight module 200 of marginal portion of one of LCD first panel 121 and second panel 122 or keep the printed circuit board (PCB) 100 of certain distance to link to each other with it.Also accommodate pliable printed circuit 110 and printed circuit board (PCB) 100 in the protection framework (outer cover) 103.Also be placed with one or more chip for driving at pliable printed circuit 110.This invention adopts pliable printed circuit 110 to bend at diverse location, makes the printed circuit board (PCB) 100 of the win panel 121 and second panel 122 can be overlapped.
More than design has proposed the building method of double side liquid crystal display, but because first panel 121 and second panel 122 adopt the printed circuit board (PCB) of different structure respectively, design, more complicated is installed, and can increase the border width of LCD.In addition, seldom adopt lower limb application drives chip simultaneously for the LCD of present stage, it makes difficult, and result of broadcast is poor.
Summary of the invention
The embodiment of the invention provides a kind of liquid crystal display systems and control method for playing back of positive and negative demonstration, adopts single printed circuit board (PCB) that two liquid crystal panels of the LCD of positive and negative demonstration are driven simultaneously and control, and realizes the double-sided display programme content.This liquid crystal display systems is simple in structure, and integrated level is higher, and the double-side driving control circuit cost is lower.
The embodiment of the invention provides a kind of liquid crystal display systems of positive and negative demonstration; It comprises the printed circuit board (PCB) that is integrated with sequential control circuit module and gamma supply module; First panel and second panel; Said printed circuit board (PCB) is connected with second panel with first panel respectively through at least one flexible printed circuit, also is provided with the backlight module of a double-side between said first panel and second panel;
Through sequential control circuit module public on the said printed circuit board (PCB) and the control of gamma supply module; Produce identical two-way drive signal and voltage simultaneously and be transferred to said first panel and second panel respectively, make said first panel and second panel while display program content of positive and negative setting.
Further; The LCD of said positive and negative demonstration can mate the panels that use the built-in grid of panel integrated and drive (GIP) technology; When having adopted the panel of the built-in grid drivings of panel (GIP) technology integrated; Said flexible printed circuit also is provided with and integrates the multi-functional chip for driving that data-driven and grid drive, and also is provided with level switch module on the said printed circuit board (PCB).
Further; The LCD of said positive and negative demonstration can mate use and not have the built-in grid of integrated panel to drive panel of (GIP) technology; When employing there is not the built-in grid of integrated panel to drive the panel of (GIP) technology; Said flexible printed circuit also is provided with grid drive circuit module and data drive circuit module, and said grid drive circuit module obtains clock signal from said sequential control circuit module, and said data drive circuit module is obtained gamma voltage from said gamma supply module.
Further, said backlight module is the backlight module that the CCFL, EEFL, LED of straight-down negative combines diffusion sheet, bright enhancement film optical material to form; Or the CCFL of side-light type, EEFL, the LED backlight module that combines double-sided light guide plate, bright enhancement film optical material to form; Or two backlight modules that back-to-back single face backlight combination forms, and uniformity coefficient, the luminance parameter of the light of this backlight module both sides generation are basic identical.
Further, said first panel and second panel respectively slide adjustment and the screens of the groove through the backlight module side and cynapse point fix; And said printed circuit board (PCB) passes through double faced adhesive tape rubber cushion or buckle or the screw retention side at backlight module, and is connected with first panel and the binding of second panel respectively through said flexible printed circuit; Said LCD frame is protected framework in addition, and said protection framework is fixed through the backlight module buckle, perhaps utilizes screw to fix through the screw hole on the backlight module.
Further, the number of said flexible printed circuit matees adjustment according to the model specification of first panel and second panel.
The embodiment of the invention also provides a kind of control method for playing back of liquid crystal display systems of above-mentioned positive and negative demonstration; Adopt a printed circuit board (PCB) that is integrated with sequential control circuit module and gamma supply module; A backlight module and a power module power supply; Receive single audio-video signal input,, produce identical two-way drive signal and voltage simultaneously through sequential control circuit module public on the said printed circuit board (PCB) and the control of gamma supply module; Utilize flexible printed circuit to be transferred to first panel and second panel respectively, make said first panel and second panel of positive and negative setting show identical programme content simultaneously.
Further; When the LCD of said positive and negative demonstration coupling is used the built-in grid of panel integrated and is driven the panel of (GIP) technology; Said sequential control circuit module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and said gamma supply module produce is common to form the second final data drive signal and the multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels; First grid drive signal forms the second final grid drive signal through level switch module conversion back simultaneously; Multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels, controls the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
Further; When the LCD coupling of said positive and negative demonstration is used the panel that there is not the built-in grid of integrated panel to drive (GIP) technology; Said sequential control circuit module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and gamma supply module produce is common to form the second final data drive signal and the data drive circuit module through flexible printed circuit is transferred to first and second panels; First grid drive signal is handled through the built-in connecting line of flexible printed circuit, perhaps outer connecting line transmission grid drive circuit module simultaneously; Form the second final grid drive signal and be transferred to first and second panels again, control the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
Adopt the liquid crystal display systems and the control method for playing back of positive and negative demonstration provided by the invention that following advantage is arranged:
1, can support sharing backlight module, the input of single signal, single power supply power supply; The drive controlling of two identical display panels of model specification can realize through the printed circuit board (PCB) that is provided with time schedule controller module, gamma supply module; Practice thrift cost so more; The assembly utilization factor is higher, and is simpler in assembling, and the structural design that the present invention simultaneously adopts can be so that the edge of the LCD of positive and negative demonstration be thinner.
2, proposed respectively panel that comprises GIP (Gate In Panel, the built-in grid of panel drive) technology and the drive controlling method that does not comprise the panel of GIP technology.Its processing signals is more accurate, quick, and system reliability is high.
3, adopt single printed circuit board (PCB) that two liquid crystal panels of the LCD of positive and negative demonstration are driven simultaneously and control; This printed circuit board (PCB) comprises time-sequence control module simultaneously; Can directly adopt LVDS signal etc. as single input signal, realize the double-sided display identical content.And the center line of the liquid crystal panel module on two sides can be directly over against backlight, thereby reaches better display effect.
Description of drawings
Figure 1A is the structural representation of the LCD of existing positive and negative demonstration;
Figure 1B is the detailed circuit syndeton synoptic diagram of the LCD of existing positive and negative demonstration among Figure 1A;
Fig. 2 is the sectional structure chart of the LCD of existing positive and negative demonstration;
Fig. 3 is the system architecture synoptic diagram that the embodiment of the invention one coupling is used the liquid crystal panel of GIP technology;
Fig. 4 A is the system architecture synoptic diagram that the embodiment of the invention two couplings are used the liquid crystal panel that does not have the normal GIP of employing technology;
Fig. 4 B is the detailed circuit syndeton synoptic diagram of embodiment among Fig. 4 A;
Fig. 5 is the sectional structure chart of LCD of the positive and negative demonstration of the embodiment of the invention one;
Fig. 6 is the skeleton view of the embodiment of the invention one.
Wherein corresponding the theing contents are as follows of label among the figure:
010: load module
100: printed circuit board (PCB)
101: the sequential control circuit module
102: the gamma supply module
103: level switch module
110: flexible printed circuit
111: multi-functional chip for driving
112: data multitasking module
113: the grid drive circuit module
114: the voltage switch circuit module
115: the data drive circuit module
116: the first panel data lines
117: the second panel data lines
118: data bus
121: the first panels
122: the second panels
200: backlight module
300: display panel module
400: the protection framework
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
The embodiment of the invention provides a kind of liquid crystal display systems of positive and negative demonstration; Comprise the printed circuit board (PCB) that is integrated with sequential control circuit module and gamma supply module; First panel and second panel; Said printed circuit board (PCB) is connected with second panel with first panel respectively through at least one flexible printed circuit, also is provided with the backlight module of a double-side between said first panel and second panel; Through sequential control circuit module public on the said printed circuit board (PCB) and the control of gamma supply module; Produce identical two-way drive signal and voltage simultaneously and be transferred to said first panel and second panel respectively, make said first panel and second panel of positive and negative setting show identical programme content simultaneously.
Concrete, as shown in Figure 3, the embodiment of the invention one comprises printed circuit board (PCB) 100, the flexible printed circuit 110 and first panel 121 and second panel 122 for the liquid crystal display systems of the liquid crystal panel of coupling use GIP technology.One end of said flexible printed circuit 110 is connected with printed circuit board (PCB) 100, and the other end is bound with first panel 121 or second panel 122 and is connected.
Integrated sequential control circuit module 101, gamma supply module 102 and level switch module 103 on the said printed circuit board (PCB) 100; Comprise multi-functional chip for driving 111 (integrating the chip that data-driven and grid drive) on the flexible printed circuit 110; This first panel 121 and second panel 122 are the liquid crystal panel of integrated GIP technology.Sequential control circuit module 101 is responsible for converting input signal (like LVDS etc.) into data drive signal and grid drive signal.The level that this data drive signal and gamma supply module 102 produce forms the final data drive signal jointly and is transferred to panel through flexible printed circuit 110 again through multi-functional chip for driving 111, and this grid drive signal also is transferred to panel through flexible printed circuit 110 through multi-functional chip for driving 111 through the final grid drive signal of level switch module 103 conversion back formation and is transferred to panel more simultaneously.Above-mentioned final data drive signal is controlled liquid crystal panel jointly with wire grid drive signal and is demonstrated the picture material that is input to printed circuit board (PCB) 100.
Need to prove; The first embodiment of the present invention is respectively 2 with first panel 121 with the flexible printed circuit that is connected 110 of second panel 122 in Fig. 3; Its quantity maybe be different because of the model specification of first panel 121 and second panel 122, and the quantity in the practical application possibly be to be respectively 1 or a plurality of flexible printed circuits.
With reference to figure 4A, the embodiment of the invention two is used the liquid crystal display systems that does not adopt the technological liquid crystal panel of GIP for coupling, and it comprises printed circuit board (PCB) 100, the flexible printed circuit 110 and first panel 121 and second panel 122.One end of flexible printed circuit 110 is connected with printed circuit board (PCB) 100, and the other end is bound with first panel 121 or second panel 122 and is connected.
In more detail, integrated sequential control circuit module 101, gamma supply module 102 on the printed circuit board (PCB) 100; Comprise grid drive circuit module 113 or data-driven module 115 on the flexible printed circuit 110; This first panel 121 and second panel 122 be not for using the normal liquid crystal panel of GIP technology.Sequential control circuit module 101 is responsible for converting input signal (like LVDS etc.) into data drive signal and grid drive signal.The level that this data drive signal and gamma supply module 102 produces forms the final data drive signal jointly and is transferred to panel through flexible printed circuit 110 again through data drive circuit module 115, and this grid drive signal is transferred to panel through flexible printed circuit 110 through built-in connecting line (not shown) of panel or the final grid drive signal of outer connecting line (not shown) transmission grid drive circuit module 113 formation more simultaneously.Above-mentioned final data drive signal is controlled liquid crystal panel jointly with wire grid drive signal and is demonstrated the picture material that is input to printed circuit board (PCB) 100.
Need to prove; Second embodiment of the invention is respectively 4 with first panel 121 and the flexible printed circuit that is connected 110 of second panel 122 in Fig. 4 A (wherein 2 is the flexible printed circuit 110 that comprises grid drive circuit module 113; 2 for comprising the flexible printed circuit 110 of data drive circuit module 115); Its quantity maybe be different because of the model specification of first panel 121 and second panel 122, and the quantity in the practical application possibly be to be respectively 2 or a plurality of flexible printed circuits.
Fig. 4 B is the detailed circuit syndeton synoptic diagram of embodiment two among Fig. 4 A.Its structure comprises: first panel 121 and second panel 122 that are used to show the same pixel data; Be used for providing the data drive circuit module 115 of picture element signal to the data line (D1 to Dm) of first panel 121 or second panel 122; Be used for providing the grid drive circuit module 113 of sweep signal to the grid line (G1 to Gn) of first panel 121 or second panel 122; Be used for providing the gamma supply module 102 of gamma voltage to data drive circuit module 115; The sequential control circuit module 101 that is used for control gate drive circuit module 113 and data drive circuit module 115.
In more detail, in first panel 121 and second panel 122 that the present invention implements, m * n liquid crystal cells (Clc) is pixel, arranges with matrix shape, and pixel is formed on the infall of m bar data line and n bar grid line; Each described liquid crystal cells Clc comprises a thin film transistor (TFT) (TFT); And each described liquid crystal cells (Clc) also comprises a holding capacitor (Cst).In brief, each liquid crystal cells i.e. a pixel, and this liquid crystal cells comprises a thin film transistor (TFT), a holding capacitor.
Said holding capacitor (Cst) is arranged between the pixel and prime grid line of liquid crystal cells (Clc), or is arranged between the pixel electrode and public electrode wire of liquid crystal cells (Clc), to continue the keeping voltage of liquid crystal cells (Clc) constant.
Wherein gamma supply module 102 provides identical a plurality of gamma voltages to the data drive circuit module 115 of first panel 121 and second panel 122 respectively simultaneously, so that produce the picture element signal of simulation.
Sequential control circuit module 101 produces two groups of grid-control system signals (GCS) and data controlling signal (DCS) through the synchronizing signal that adopts input; And respectively grid-control system signal (GCS) is offered the grid drive circuit module 113 of first panel 121 and second panel 122; Respectively data controlling signal (DCS) is offered the data control circuit module 115 of first panel 121 and second panel 122; And through handling input image data (R again; G, B) to and to the data control circuit module 115 of first panel 121 and second panel 122 signal is provided simultaneously.
The data drive circuit module 115 corresponding data controlling signals that provide from sequential control circuit module 101 (DCS), to data line provide single file quantity view data (R, G, B).Concrete; The data drive circuit module will be from view data (R, the G of sequential control circuit module 101 inputs through adopting the gamma voltage that provides from gamma supply module 102; B) convert analog pixel signal into, and the analog pixel signal after will changing offers data line (D1 to Dm).
Grid drive circuit module 113 receives the grid-control system signal (GSC) that provides from sequential control circuit module 101, produces sweep signal, and with the sweep signal that is produced in proper order be provided to grid line (G1 to Gn).Therefore, order drives the thin film transistor (TFT) (TFT) that is connected to grid line (G1 to Gn).
This backlight module 200 among the embodiment two is the double-side backlight module; It can be the two-sided backlight module that the CCFL, EEFL, LED etc. of straight-down negative combine optical materials such as diffusion sheet, bright enhancement film to form; Also can be the two-sided backlight module that the CCFL, EEFL, LED etc. of side-light type combine double-sided light guide plate, bright enhancement film etc. to form, can also be that two back-to-back single face backlights combine the backlight modules that form; But parameters such as the uniformity coefficient of the light that these backlight module both sides produce, brightness should be basic identical.
In embodiment two; Require the sequential control circuit module to first panel 121 and second panel 122 identical grid-control system signal (GCS), data controlling signal (DCS) and view data (R to be provided simultaneously accurately; G; And require the data drive circuit module 115 and the grid drive circuit module 113 of first panel 121 and second panel 122 identical B).
Fig. 5 is the sectional structure chart of LCD of the positive and negative demonstration of the embodiment of the invention one.This embodiment comprises printed circuit board (PCB) 100, flexible printed circuit 110, the first panels 121, the second panels 122, backlight module 200 and protection framework 400.One end of flexible printed circuit 110 is connected with printed circuit board (PCB) 100, and the other end is bound with first panel 121 or second panel 122 and is connected.This backlight module 200 is the double-side backlight module; It can be the two-sided backlight module that the CCFL, EEFL, LED etc. of straight-down negative combine optical materials such as diffusion sheet, bright enhancement film to form; Also can be the two-sided backlight module that the CCFL, EEFL, LED etc. of side-light type combine double-sided light guide plate, bright enhancement film etc. to form, can also be that two back-to-back single face backlights combine the backlight modules that form; But parameters such as the uniformity coefficient of the light that these backlight module both sides produce, brightness should be basic identical.
Wherein, said first panel and second panel respectively slide adjustment and the screens of the groove through the backlight module side and cynapse point fix.And said printed circuit board (PCB) passes through double faced adhesive tape rubber cushion or buckle or the screw retention side at backlight module; And binding is connected with second panel with first panel respectively to pass through said flexible printed circuit; Be fixed on the backlight module after the connection; To protect tank bracket to cover in it again and fix all around, form the LCD of positive and negative demonstration.400 of protection frameworks are fixed through backlight module 200 buckles or are fixed through installation double-screw bolt of the screw hole on the backlight module 200 or screw.
In this embodiment; Through adopting single printed circuit board (PCB) can dwindle the edge thickness of the LCD of final positive and negative demonstration; Can guarantee that its first panel 121 and second panel 122 can align with the center of backlight module 200 mutually through the structure groove simultaneously, make the tow sides content displayed of display reach consistent.
Fig. 6 is the skeleton view of the embodiment of the invention one.This embodiment comprises printed circuit board (PCB) 100, flexible printed circuit 110, the first panels 121, the second panels 122, backlight module 200 and protection framework 400.One end of flexible printed circuit 110 is connected with printed circuit board (PCB) 100, and the other end is connected with first panel 121 or second panel 122, and this method of attachment adopts nation fixed.This embodiment is the skeleton view (not containing the protection framework 400 among Fig. 5) of Fig. 5.
Structure between each module that this figure describes more clearly: backlight module 200 and plays and supports and the effect of fixing first panel 121 and second panel 122 between Centered first panel 121 and second panel 122.Printed circuit board (PCB) 100 is fixed in a side of backlight module 200, can adopt screw, double faced adhesive tape or snap fit.Owing to adopt flexible printed circuit 110 that first panel 121 or second panel 122 are connected with printed circuit board (PCB) 100, thereby can make that the distance between printed circuit board (PCB) 100 and first panel 121 and second panel 122 and the backlight module 200 is suitable through the size of adjustment flexible printed circuit 110.
Need to prove; Be respectively 2 with first panel 121 with the flexible printed circuit that is connected 110 of second panel 122 in the present embodiment; Its quantity maybe be different because of the model specification of first panel 121 and second panel 122, and the quantity in the practical application possibly be to be respectively 1 or a plurality of flexible printed circuits.
Need to prove that the embodiment of the invention two also can adopt Fig. 5, the connected mode of Fig. 6.
The embodiment of the invention three also provides a kind of control method for playing back of liquid crystal display systems of above-mentioned positive and negative demonstration; Adopt a printed circuit board (PCB) that is integrated with time schedule controller module and gamma supply module; A backlight module and a power module power supply; Receive single audio-video signal input,, produce identical two-way drive signal and voltage simultaneously through time schedule controller module public on the said printed circuit board (PCB) and the control of gamma supply module; Utilize flexible printed circuit to be transferred to first panel and second panel respectively, make said first panel and second panel of positive and negative setting show identical programme content simultaneously.
As a kind of embodiment; When the LCD of said positive and negative demonstration coupling is used the built-in grid of panel integrated and is driven the panel of (GIP) technology; Said time schedule controller module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and said gamma supply module produce is common to form the second final data drive signal and the multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels; First grid drive signal forms the second final grid drive signal through level switch module conversion back simultaneously; Multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels, controls the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
As another kind of embodiment; When the LCD coupling of said positive and negative demonstration is used the panel that there is not the built-in grid of integrated panel to drive (GIP) technology; Said sequential control circuit module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and gamma supply module produce is common to form the second final data drive signal and the data drive circuit module through flexible printed circuit is transferred to first and second panels; First grid drive signal is handled through the built-in connecting line of flexible printed circuit, perhaps outer connecting line transmission grid drive circuit module simultaneously; Form the second final grid drive signal and be transferred to first and second panels again, control the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
The above is a preferred implementation of the present invention; Certainly can not limit the present invention's interest field with this; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and change, these improvement and change also are regarded as protection scope of the present invention.
Claims (9)
1. the liquid crystal display systems of a positive and negative demonstration; It is characterized in that; Comprise the printed circuit board (PCB) that is integrated with sequential control circuit module and gamma supply module; First panel and second panel, said printed circuit board (PCB) is connected with second panel with first panel respectively through at least one flexible printed circuit, also is provided with the backlight module of a double-side between said first panel and second panel; Through sequential control circuit module public on the said printed circuit board (PCB) and the control of gamma supply module; Produce identical two-way drive signal and voltage simultaneously and be transferred to said first panel and second panel respectively, make said first panel and second panel while display program content of positive and negative setting;
In said first panel and second panel, m * n liquid crystal cells (Clc) arranged with matrix shape, and pixel is formed on the infall of m bar data line and n bar grid line; Each described liquid crystal cells (Clc) comprises a thin film transistor (TFT) (TFT); A holding capacitor (Cst); Said holding capacitor (Cst) is arranged between the pixel and prime grid line of liquid crystal cells (Clc); Or be arranged between the pixel electrode and public electrode wire of liquid crystal cells (Clc), to continue the keeping voltage of liquid crystal cells (Clc) constant.
2. the liquid crystal display systems of positive and negative demonstration according to claim 1; It is characterized in that; The LCD of said positive and negative demonstration can mate the panels that use the built-in grid of panel integrated and drive (GIP) technology; When the panels that adopt the built-in grid of panel integrated and drive (GIP) technology, said flexible printed circuit also is provided with and integrates the multi-functional chip for driving that data-driven and grid drive, and also is provided with level switch module on the said printed circuit board (PCB).
3. the liquid crystal display systems of positive and negative demonstration according to claim 1; It is characterized in that; The LCD of said positive and negative demonstration can mate use and not have the built-in grid of integrated panel to drive panel of (GIP) technology; When there be not the built-in grid of integrated panel, employing do not drive the panel of (GIP) technology; Said flexible printed circuit also is provided with grid drive circuit module and data drive circuit module, and said grid drive circuit module obtains clock signal from said sequential control circuit module, and said data drive circuit module is obtained gamma voltage from said gamma supply module.
4. according to the liquid crystal display systems of any described positive and negative demonstration of claim 1 to 3, it is characterized in that said backlight module is the backlight module that CCFL, EEFL, the LED of straight-down negative combines diffusion sheet, bright enhancement film optical material to form; Or the CCFL of side-light type, EEFL, the LED backlight module that combines double-sided light guide plate, bright enhancement film optical material to form; Or two backlight modules that back-to-back single face backlight combination forms, and uniformity coefficient, the luminance parameter of the light of this backlight module both sides generation are basic identical.
5. according to the liquid crystal display systems of any described positive and negative demonstration of claim 1 to 3, it is characterized in that said first panel and second panel slide adjustment and the screens of the groove through the backlight module side and cynapse point are respectively fixed; And said printed circuit board (PCB) passes through double faced adhesive tape rubber cushion or buckle or the screw retention side at backlight module, and is connected with first panel and the binding of second panel respectively through said flexible printed circuit; Said LCD frame is protected framework in addition, and said protection framework is fixed through the backlight module buckle, perhaps utilizes screw to fix through the screw hole on the backlight module.
6. according to the liquid crystal display systems of any described positive and negative demonstration of claim 1 to 3, it is characterized in that the number of said flexible printed circuit matees adjustment according to the model specification of first panel and second panel.
7. according to the control method for playing back of the liquid crystal display systems of the said positive and negative demonstration of claim 1; It is characterized in that; Adopt a printed circuit board (PCB) that is integrated with sequential control circuit module and gamma supply module, a backlight module and a power module power supply receive single audio-video signal input; Through sequential control circuit module public on the said printed circuit board (PCB) and the control of gamma supply module; Produce identical two-way drive signal and voltage simultaneously, utilize flexible printed circuit to be transferred to first panel and second panel respectively, make said first panel and second panel while display program content of positive and negative setting.
8. according to the control method for playing back of the liquid crystal display systems of the said positive and negative demonstration of claim 7; It is characterized in that; When the LCD of said positive and negative demonstration coupling is used the built-in grid of panel integrated and is driven the panel of (GIP) technology; Said sequential control circuit module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and said gamma supply module produce is common to form the second final data drive signal and the multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels;
First grid drive signal forms the second final grid drive signal through level switch module conversion back simultaneously; Multi-functional chip for driving through said flexible printed circuit is transferred to first and second panels, controls the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
9. according to the control method for playing back of the liquid crystal display systems of the said positive and negative demonstration of claim 7; It is characterized in that; When the LCD coupling of said positive and negative demonstration is used the panel that there is not the built-in grid of integrated panel to drive (GIP) technology; Said sequential control circuit module converts input signal into first data drive signal and first grid drive signal, and the level that this first data drive signal and gamma supply module produce is common to form the second final data drive signal and the data drive circuit module through flexible printed circuit is transferred to first and second panels;
First grid drive signal is handled through the built-in connecting line of flexible printed circuit, perhaps outer connecting line transmission grid drive circuit module simultaneously; Form the second final grid drive signal and be transferred to first and second panels again, control the picture material that first and second liquid crystal panels demonstrate jointly by second data drive signal and the second grid drive signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100423575A CN101645246B (en) | 2009-09-01 | 2009-09-01 | Front-back-display liquid crystal display system and playing control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100423575A CN101645246B (en) | 2009-09-01 | 2009-09-01 | Front-back-display liquid crystal display system and playing control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101645246A CN101645246A (en) | 2010-02-10 |
| CN101645246B true CN101645246B (en) | 2012-01-25 |
Family
ID=41657110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100423575A Expired - Fee Related CN101645246B (en) | 2009-09-01 | 2009-09-01 | Front-back-display liquid crystal display system and playing control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101645246B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208247B (en) * | 2012-01-16 | 2016-12-28 | 联想(北京)有限公司 | A kind of Biscreen display and display packing |
| CN204302618U (en) * | 2015-01-04 | 2015-04-29 | 京东方科技集团股份有限公司 | A kind of display device |
| CN204496889U (en) | 2015-04-07 | 2015-07-22 | 京东方科技集团股份有限公司 | A kind of circuit, display base plate and display device |
| CN104900208B (en) | 2015-06-25 | 2018-07-06 | 京东方科技集团股份有限公司 | Sequence controller, sequential control method and display panel |
| CN106297721A (en) * | 2016-10-26 | 2017-01-04 | 深圳市华星光电技术有限公司 | Liquid crystal panel drive circuit and liquid crystal indicator |
| CN108490684A (en) * | 2018-03-15 | 2018-09-04 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN109064986B (en) | 2018-08-29 | 2021-01-26 | 京东方科技集团股份有限公司 | Display panel, manufacturing method and driving method thereof, and display device |
| CN110890044B (en) * | 2019-11-26 | 2022-11-01 | Tcl华星光电技术有限公司 | Display device test structure and display device test system |
| CN110890045B (en) * | 2019-11-26 | 2022-11-01 | Tcl华星光电技术有限公司 | Display device test structure and display device test system |
| CN113691751A (en) * | 2021-07-06 | 2021-11-23 | 安徽康佳电子有限公司 | Double-sided display television system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576980A (en) * | 2003-06-27 | 2005-02-09 | 精工电子有限公司 | Display device |
| CN1588187A (en) * | 2004-07-01 | 2005-03-02 | 友达光电股份有限公司 | Liquid crystal display with multiple panels |
| CN1658279A (en) * | 2004-01-09 | 2005-08-24 | 三星电子株式会社 | Display device |
-
2009
- 2009-09-01 CN CN2009100423575A patent/CN101645246B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576980A (en) * | 2003-06-27 | 2005-02-09 | 精工电子有限公司 | Display device |
| CN1658279A (en) * | 2004-01-09 | 2005-08-24 | 三星电子株式会社 | Display device |
| CN1588187A (en) * | 2004-07-01 | 2005-03-02 | 友达光电股份有限公司 | Liquid crystal display with multiple panels |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101645246A (en) | 2010-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101645246B (en) | Front-back-display liquid crystal display system and playing control method | |
| CN201594377U (en) | Liquid crystal display capable of double-side display | |
| US8446402B2 (en) | Liquid crystal display | |
| US8773419B2 (en) | Liquid crystal display | |
| CN102749730B (en) | Liquid crystal display device | |
| CN107765487B (en) | Display device | |
| KR101940187B1 (en) | Two side display device and manufacturing method thereof | |
| US20100045640A1 (en) | Display device and method of driving the same | |
| US20100302493A1 (en) | Liquid crystal display | |
| US8363039B2 (en) | Liquid crystal display | |
| US10088721B2 (en) | Liquid crystal display | |
| CN102087434B (en) | Liquid crystal display device | |
| CN102685522A (en) | Multiviewable stereoscopic image display device and method for driving same | |
| CN101430851A (en) | Driving device, electro-optical device, and electronic apparatus | |
| CN102097073A (en) | Driving system for backlight unit, liquid crystal display device and method of driving the same | |
| CN105741732B (en) | Gate drivers, the display device with gate drivers and its driving method | |
| CN103745665A (en) | Transparent display device | |
| EP3985305A1 (en) | Backlight unit and display device comprising same | |
| KR20160092416A (en) | Liquid crystal display device | |
| CN102034447A (en) | Liquid crystal display device | |
| US10290274B2 (en) | Array substrate | |
| US10120223B2 (en) | Liquid crystal display device | |
| US8810614B2 (en) | Method, device and system for displaying three-dimensional stereo images | |
| US20060023470A1 (en) | Impulse backlight system and a flat display using the same | |
| CN202902073U (en) | Automobile display equipment, double-vision display device thereof and backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20130901 |