CN109509416A - Show driving plate and display device - Google Patents
Show driving plate and display device Download PDFInfo
- Publication number
- CN109509416A CN109509416A CN201811559477.8A CN201811559477A CN109509416A CN 109509416 A CN109509416 A CN 109509416A CN 201811559477 A CN201811559477 A CN 201811559477A CN 109509416 A CN109509416 A CN 109509416A
- Authority
- CN
- China
- Prior art keywords
- signal input
- input pad
- write
- protect
- pad piece
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The present invention discloses a kind of display driving plate and display device, and display driving plate includes: circuit substrate；Driving chip is set on circuit substrate, and driving chip is configured to driving display panel work；Write-protect signal input pad piece and multiple test signal input pad pieces, write-protect signal input pad piece and multiple test signal input pad pieces are all set on circuit substrate, and are arranged close to the side of circuit substrate；Metal area, is set on circuit substrate；ON-OFF control circuit; it is set on circuit substrate, ON-OFF control circuit, is configured to the level level of the write-protect signal accessed according to write-protect signal input pad piece; control test signal input pad piece is electrically connected with metal area, or control test signal input pad piece is electrically connected with driving chip.It time consumed by the more new procedures of display driving plate when the present invention can shorten batch production, increases productivity.
Description
Technical field
The present invention relates to electronic circuit technology field, in particular to a kind of display driving plate and display device.
Background technique
Here statement only provides background information related with the application, without inevitably constituting the prior art.
Currently, being run in the driving chip that display driving plate during production, is frequently encountered in display driving plate
Program missing or program version need the problem of updating.
And when industry production is produced in batches, program version, which updates to need to update or modify, needs pure craft
Operation certainly will need to move display panel in this way, and driving chip, such as source driving chip is easy to cause to be lost.
Summary of the invention
The main object of the present invention is to propose a kind of display driving plate and display device, it is intended to be realized when shortening batch production
Display driving plate more new procedures consumed by the time, increase productivity.
To achieve the above object, the present invention proposes that a kind of display driving plate, the display driving plate include:
Circuit substrate；
Driving chip is set on the circuit substrate, and the driving chip is configured to driving display panel work；
Write-protect signal input pad piece and multiple test signal input pad pieces, the write-protect signal input pad piece and multiple
The test signal input pad piece is all set on the circuit substrate, and is arranged close to the side of the circuit substrate；
Metal area, is set on the circuit substrate；
ON-OFF control circuit is set on the circuit substrate, the ON-OFF control circuit, is configured to write guarantor according to
The level level for protecting the write-protect signal of signal input pad piece access, with controlling the test signal input pad piece and the metal
Area's electrical connection, or the control test signal input pad piece are electrically connected with the driving chip.
Optionally, the ON-OFF control circuit, concrete configuration are to write guarantor what the write-protect signal input pad piece accessed
When shield signal is high level, controls the test signal input pad piece and be electrically connected with the driving chip；
When the write-protect signal of write-protect signal input pad piece access is low level, it is defeated to control the test signal
Enter gasket to be electrically connected with the metal area.
Optionally, the quantity of the test signal input pad piece is three, and three test signal input pad pieces point
It Wei not clock signal input gasket, data-signal spacer and power supply signal spacer.
Optionally, the quantity of the ON-OFF control circuit is corresponding with the test quantity of signal input pad, and is respectively
First switch control circuit, second switch control circuit and third ON-OFF control circuit；
The controlled end of the first switch control circuit, the controlled end of the second switch control circuit and the third are opened
The controlled end for closing control circuit is electrically connected with the write-protect signal input pad piece respectively；
The input terminal of the first switch control circuit is connect with the clock signal input gasket, the first switch control
First output end of circuit processed is connect with the metal area, and second output terminal is connect with the driving chip；
The input terminal of the second switch control circuit is connect with the data-signal spacer, the second switch control
First output end of circuit processed and metal area, second output terminal are connect with the driving chip；
The input terminal of the third ON-OFF control circuit is connect with the power supply signal spacer, the third switch control
First output end of circuit processed and metal area, second output terminal are connect with the driving chip.
Optionally, each ON-OFF control circuit includes first switch tube and second switch, the first switch tube
It is electrically connected with the write-protect signal input pad piece with the controlled end of the second switch, the input of the first switch tube
End and the input terminal of the second switch are connect with the test signal input pad, the output end of the first switch tube and
The driving chip connection；The output end of the second switch is electrically connected with the metal area.
Optionally, the display driving plate is additionally provided with buckle, and the buckle is set on the circuit substrate, the card
Snap fit, which is set to, is connected to the circuit substrate detachable card on mounted carrier；
The write-protect signal input pad piece and multiple corresponding buckled installation sites of test signal input pad piece
Setting.
Optionally, the circuit substrate has the upper and lower surfaces being oppositely arranged；
The write-protect signal input pad piece and multiple test signal input pad pieces are all set in the circuit substrate
Upper surface；
Alternatively, the write-protect signal input pad piece and multiple test signal input pad pieces are divided into circuit substrate
Upper and lower surfaces.
Optionally, the quantity of the buckle is two, the write-protect signal input pad piece and multiple test signals
Spacer respectively corresponds the installation site setting of two buckles；
Alternatively, the write-protect signal input pad piece and multiple test signal input pad pieces correspond to the same buckle
Position position.
The present invention also proposes that a kind of display driving plate, the display driving plate include:
Circuit substrate；
Memory is set on the circuit substrate, and the memory is configured to the work of storage driving display panel work
Make data；
Write-protect signal input pad piece and multiple test signal input pad pieces, the write-protect signal input pad piece and multiple
The test signal input pad piece is all set on the circuit substrate；
Metal area, is set on the circuit substrate；
ON-OFF control circuit is set on the circuit substrate, the ON-OFF control circuit, is configured to write guarantor according to
The level level for protecting the write-protect signal of signal input pad piece access, with controlling the test signal input pad piece and the metal
Area's electrical connection, or the control test signal input pad piece are electrically connected with the driving chip.
The present invention also proposes a kind of display device, including display panel, conduct piece and shows driving plate as described above, institute
It states display and is driven through the conduct piece and be electrically connected with the display panel；The display driving plate includes: circuit substrate；Driving
Chip is set on the circuit substrate, and the driving chip is configured to driving display panel work；Write-protect signal input pad
Piece and multiple test signal input pad pieces, the write-protect signal input pad piece and multiple test signal input pad pieces are all provided with
It is placed on the circuit substrate, and is arranged close to the side of the circuit substrate；Metal area, is set to the circuit substrate
On；ON-OFF control circuit is set on the circuit substrate, the ON-OFF control circuit, is configured to be believed according to the write-protect
The level level of the write-protect signal of number spacer access, controls the test signal input pad piece and metal area is electric
Connection, or the control test signal input pad piece are electrically connected with the driving chip.
The invention shows driving plates by setting circuit substrate, and write-protect signal input pad piece is arranged on circuit substrate
And multiple test signal input pad pieces, metal area and ON-OFF control circuit, to be accessed according to write-protect signal input pad piece
Write-protect signal level level, control test signal input pad piece be electrically connected with the metal area, or control test
Signal input pad piece is electrically connected with the driving chip.The present invention controls write-protect signal input pad by ON-OFF control circuit
Piece and multiple test signal input pad pieces to be electrically connected with burning jig, and driving chip both may be implemented without connecting with connector
Burning program.So set, test device is simultaneously updated the driver in multiple display driving plates,
It is easy to operate, it is easy to accomplish, the time consumed by the more new procedures of display driving plate when batch production can be shortened, improve life
Force of labor.The present invention solve program version need update or modify need staff to display driving plate block-by-block into
Row updates, and then to consume a large amount of time, manpower and material resources, leads to the problem that productivity is low.And the present invention is without moving
Display panel is also solved when program updates, the problem of moving display panel, driving chip is easy to cause to be lost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is that the invention shows the functional block diagrams that driving plate is applied to an embodiment in display device；
Fig. 2 is that the invention shows the electrical block diagrams that driving plate shows one embodiment of driving plate；
Fig. 3 is that the invention shows the structural schematic diagrams of one embodiment of driving plate；
Fig. 4 is that the invention shows write-protect signal input pad piece in driving plate and multiple test signal input pad pieces and buckle
Positional diagram.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of display driving plate, is applied in display device.
The display device can be computer display screen, mobile phone, monitor, TV etc. and fill with the display of liquid crystal display
It sets.
Display device generally comprises viewing area, and the drive circuit system of driving viewing area work, driving control system
Including turntable driving integrated circuit, or for gate driving circuit 60 namely G-COF, (Gate-Chip on Film, grid cover
Brilliant thin film chip)；Data-driven integrated circuit, or be source electrode drive circuit 70 namely S-COF (Source-Chip on
Film, source electrode flip chip chip), power management integrated circuit (Power Management Integrated Circuit,
PMIC), memory and sequence controller.
During production, be frequently encountered display driving plate on sequence controller in run program missing or
Program version needs the problem of updating.And when industry production is produced in batches, program version needs to update or repaired
Change and need pure manual work, namely need staff to display driving plate block-by-block block-by-block be updated, display panel with
It shows that driving plate is fixedly mounted, and after FCL encapsulation, then if carrying out program update, certainly will need to move display panel in this way,
It is easy to cause driving chip, such as source driving chip to be lost.
To solve the above-mentioned problems, referring to figs. 1 to Fig. 4, in an embodiment of the present invention, which includes:
Circuit substrate 100；
Driving chip 200 is set on the circuit substrate 100, and the driving chip 200 is configured to driving display panel
500 work；
Write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3) (Pad1~Pad3),
The write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3) (Pad1~Pad3)
It is all set on the circuit substrate 100, and is arranged close to the side of the circuit substrate 100；
Metal area Er is set on the circuit substrate 100；
ON-OFF control circuit 300 is set on the circuit substrate 100, and the ON-OFF control circuit 300 is configured to root
According to the level level of the write-protect signal of write-protect signal input pad piece Pad4 access, the test signal input pad is controlled
Piece (Pad1~Pad3) is electrically connected with the metal area Er, or the control test signal input pad piece (Pad1~Pad3)
It is electrically connected with the driving chip 200.
In the present embodiment, display driving plate includes timing control plate, also the circuit substrate 100 as in the present embodiment, even
Connect the circuit board namely Y-PCB plate of gate driving circuit 60；Connect the circuit board namely X-PCB plate of source electrode drive circuit 70；
Connect the flexible circuit board FPC of Y-PCB plate and X-PCB plate；Connect the flexible circuit board FPC of X-PCB plate and timing control plate；Its
In, the quantity of Y-PCB plate and X-PCB plate is either one or more.
Driving chip 200 includes: sequence controller 10, memory 20, power management integrated circuit 30, gamma electric voltage circuit
40, public electrode voltages circuit 50, gate driving circuit 60 and source electrode drive circuit 70.The present embodiment be chosen as memory 20 and
Sequence controller 10.Wherein, on timing control plate, power management integrated circuit 30, sequence controller 10, gal are typically provided with
Horse potential circuit 40 and public electrode voltages circuit 50.Power management integrated circuit 30 and sequence controller 10 are typically integrated in
On TCON (Timing Controller, timing control) plate.Power management integrated circuit 30 be used for for gamma electric voltage circuit 40,
Public electrode voltages circuit 50 provides input power, generates grid cut-in voltage Vgh/ for gate driving circuit 60 and closes voltage Vgl,
And the operating voltage etc. that driving gate driving circuit 60, source electrode drive circuit 70, sequence controller 10 work.Timing control plate
On be generally additionally provided with connector, which can connect the master controller or video of display device by communication bus
The control chip connection such as chip is handled, each external control chip passes through when the quantity of external control chip is set as multiple
Serial communication bus is connect with sequence controller 1040.Sequence controller 10 is connected by connector and the master control borad of display device
It connects, sequence controller 10 is by the R/G/B compressed signal received from the master control borad of display device, control signal through data processing
Afterwards, corresponding timing control signal is exported to source electrode drive circuit 70 and gate driving circuit 60, so that source electrode drive circuit 70
After the gamma gamma voltage that power management integrated circuit 30 exports is handled, generating source driving signal；And drive grid
After dynamic circuit 60 is handled the grid cut-in voltage Vgh/ closing voltage Vgl that power management integrated circuit 30 exports, row is generated
Scanning signal, so that viewing area be driven to work.
Memory 20 preferably realized using Electrically Erasable Programmable Read-Only Memory 20, the timing control of sequence controller operation
Processing procedure sequence is stored in mostly in Electrically Erasable Programmable Read-Only Memory 20, such as driving grid-driving integrated circuit and source
The control signal that pole driving circuit 70 works, memory 20 pass through I2C (Inter-Integrated Circuit) communication bus
With 10 communication connection of sequence controller, on the display apparatus when electricity work, sequence controller 10 reads the control in memory 20
Signal and other setting data carry out initial setting up, to generate corresponding timing control signal, to drive in display device
The source electrode drive circuit 70 and grid-driving integrated circuit of display panel 500 work.The data of memory 20 display device just
It cannot often be modified when work, once by modifying, so that setting corrupt data, it is abnormal to will lead to display device display.Cause
This, setting write-protect pin (WP pin) mostly of memory 20, and in input high level, it can control memory 20 and number be written
According to, and in low level, data cannot be written, and write-protect is carried out to memory 20.Therefore, in the present embodiment, in memory
During 20 work normally, limitation memory 20 is provided and is written into the low level signal of data to the write-protect foot of memory 20
WP, to carry out write-protect to memory 20.
In the present embodiment, metal area Er is driving chip 200 and the ground area of other circuit modules, in practical application
When, it can be realized by reserving a copper foil on circuit substrate 100.
Multiple test signal input pad pieces (Pad1~Pad3) be used for test when, incoming clock signal, data-signal and
Power supply signal, write-protect signal input pad piece Pad4 is for accessing write-protect trigger signal, in writing for gasket access high level
When protecting trigger signal, the data of memory 20 can be written over.And low level write-protect trigger signal is accessed in the gasket
When, the data of memory 20 can only be read, and cannot be written over.
In practical application, write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3)
It can be set in the side far from display panel 500, and be arranged close to the position of case mouth, needing to carry out software burning or more
When new, it can be believed using test fixture in the side of circuit substrate 100 and write-protect signal input pad piece Pad4 and multiple tests
Number spacer (Pad1~Pad3) is contacted, for example, can be realized by clamping piece or test probe host computer with it is upper
State the electrical connection of gasket.And the level of write-protect trigger signal is high level, and ON-OFF control circuit 300 is receiving this at this time
When the write-protect trigger signal of high level, above-mentioned multiple test signal input pad pieces (Pad1~Pad3) and driving chip are controlled
200 connections.In software burning or at the end of update, write-protect trigger signal that write-protect signal input pad piece Pad4 is received
Level be low level, at this time ON-OFF control circuit 300 when receiving the low level write-protect trigger signal, control it is above-mentioned
Multiple test signal input pad pieces (Pad1~Pad3) connect with metal area Er.It is understood that a jig can be set
Multiple clamping pieces are set, being arranged such to show that driving plate carries out the burning of program to muti-piece simultaneously, and without moving display surface
Plate 500.
The invention shows driving plates by setting circuit substrate 100, and setting write-protect signal is defeated on circuit substrate 100
Enter gasket Pad4 and multiple test signal input pad pieces (Pad1~Pad3), metal area Er and ON-OFF control circuit 300,
Level level with the write-protect signal accessed according to write-protect signal input pad piece Pad4, control test signal input pad piece
(Pad1~Pad3) is electrically connected with the metal area Er, or control test signal input pad piece (Pad1~Pad3) with it is described
Driving chip 200 is electrically connected.The present invention controls write-protect signal input pad piece Pad4 and multiple by ON-OFF control circuit 300
Test signal input pad piece (Pad1~Pad3) to be electrically connected with burning jig, both may be implemented to drive without connecting with connector
The burning program of chip 200.So set, allow test device simultaneously to it is multiple display driving plates in drivers into
Row updates, easy to operate, it is easy to accomplish, when can shorten consumed by the more new procedures of display driving plate when batch production
Between, it increases productivity.The present invention, which solves program version and needs to update or modify, needs staff to drive display
Plate block-by-block is updated, and then to consume a large amount of time, manpower and material resources, leads to the problem that productivity is low.And this hair
It is bright to be not necessarily to move display panel 500, it also solves when program updates, moves display panel 500, be easy to cause driving chip
200 the problem of being lost.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, the ON-OFF control circuit 300, concrete configuration is to write described
When the write-protect signal of signal input pad piece Pad4 access being protected to be high level, the test signal input pad piece (Pad1 is controlled
~Pad3) it is electrically connected with the driving chip 200；
When the write-protect signal of write-protect signal input pad piece Pad4 access is low level, the test letter is controlled
Number spacer (Pad1~Pad3) is electrically connected with the metal area Er.
It should be noted that write-protect is generally by a resistance in parallel between write-protect foot and ground, to show
In the case that device works normally, memory 20 will not all be written over data.Burning program or journey are carried out more in display device
When new, write-protect foot WP, clock foot and the data pin of memory 20 pass through I2C communication bus and electric connector and host computer connects
It connects, and receives the high level signal of host computer input in write-protect foot WP, to data-signal is written to memory 20, directly
Terminate to update.Either when memory 20 carries out burning program or program updates, write-protect foot crosses I2C communication bus and electricity
Connector is connect with host computer, to access the write-protect trigger signal of high level to the write-protect foot WP of memory 20, at this time on
Position machine can be by the electric connector and I2C communication bus and 20 communication connection of memory in display device, thus to storage
The software data of device 20 are rewritten.When display device works normally, the level of the write-protect foot WP of memory 20 is pulled low,
When guaranteeing electricity on the display apparatus and work normally, the software data in memory 20 are not written over, thus to memory
20 carry out write-protect.
In the present embodiment, by write-protect trigger signal come the gating path of trigger switch control circuit 300, in high level
When, then trigger switch control circuit 300 controls the test signal input pad piece (Pad1~Pad3) and the driving chip 200
Electrical connection, so that test fixture is by program 300 burning of signal input pad piece (Pad1~Pad3) and ON-OFF control circuit after tested
Into driving chip 200.In low level, then trigger switch control circuit 300 controls the test signal input pad piece (Pad1
~Pad3) it is electrically connected with the metal area Er, when showing that driving plate works normally, driving chip 200 is to pass through connector
With the master control borad communication connection of display device.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, the quantity of test signal input pad piece (Pad1~Pad3)
It is three, and three test signal input pad pieces (Pad1~Pad3) are respectively data-signal spacer Pad1, clock
Signal input pad piece Pad2 and power supply signal spacer Pad3.
In the present embodiment, data-signal spacer Pad1, clock signal input gasket Pad2 and power supply signal input pad
Corresponding clock (SCL) signal output end, data (SDA) signal output end and power supply (Vin) signal with test fixture of piece Pad3
Output end is adapted to connection one by one, so that driving chip 200 be made by three gaskets and test fixture communication connection, to realize journey respectively
Burning, modification or the update of sequence.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, the quantity of the ON-OFF control circuit 300 and the test signal
The quantity of input pad is corresponding, and respectively first switch control circuit 310, second switch control circuit 320 and third switch control
Circuit 330 processed；
The controlled end of the first switch control circuit 310, the controlled end of the second switch control circuit 320 and described
The controlled end of third ON-OFF control circuit 330 is electrically connected with the write-protect signal input pad piece Pad4 respectively；
The input terminal of the first switch control circuit 310 is connect with the clock signal input gasket Pad2, and described
First output end of one ON-OFF control circuit 310 is connect with the metal area Er, and the of the first switch control circuit 310
Two output ends are connect with the driving chip 200；
The input terminal of the second switch control circuit is connect with the data-signal spacer, the second switch control
First output end of circuit processed and metal area, second output terminal are connect with the driving chip；
The input terminal of the third ON-OFF control circuit is connect with the power supply signal spacer, the third switch control
First output end of circuit processed and metal area, second output terminal are connect with the driving chip
The input terminal of the second switch control circuit 320 is connect with the data-signal spacer Pad1, and described
First output end of two ON-OFF control circuits 320 is connect with the metal area Er, and the of the second switch control circuit 320
Two output ends are connect with the driving chip 200；
The input terminal of the third ON-OFF control circuit 330 is connect with the power supply signal spacer Pad3, and described
First output end of three ON-OFF control circuits 330 is connect with the metal area Er, and the of the third ON-OFF control circuit 330
Two output ends are connect with the driving chip 200.
In the present embodiment, the controlled end of three ON-OFF control circuits 300 connects with write-protect signal input pad piece Pad4 respectively
Connect, the input terminal of three ON-OFF control circuits 300 respectively with clock signal input gasket Pad2, data-signal spacer Pad1
It connects one to one with power supply signal spacer Pad3.Three ON-OFF control circuits 300 all have two output ends, and two defeated
Outlet is respectively corresponded to be connect with driving chip 200 and metal area Er.According to writing for write-protect signal input pad piece Pad4 access
The level height for protecting trigger signal, gates corresponding circuit, to realize burning or the ground connection of program.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, each ON-OFF control circuit 300 includes first switch tube
(M1, M3, M5) and second switch (M2, M2, M6), the first switch tube (M1, M3, M5) and the second switch (M2,
M2, M6) controlled end be electrically connected with the write-protect signal input pad piece Pad4, the first switch tube (M1, M3, M5)
Input terminal and the input terminal of second switch (M2, M2, M6) are connect with the test signal input pad, the first switch tube
The output end of (M1, M3, M5) is connect with the driving chip 200；The output end of the second switch (M2, M2, M6) and institute
State metal area Er electrical connection.
In the present embodiment, first switch tube (M1, M3, M5) and second switch (M2, M2, M6) are chosen as triode, MOS
The switching tubes such as pipe are realized.Wherein, first switch tube (M1, M3, M5) is optional is realized using N-MOS pipe, and second switch is optional
It is realized using P-MOS pipe.In high level, first switch tube (M1, M3, M5) is connected, and second switch (M2, M2, M6) is cut
Only, and in low level, first switch tube (M1, M3, M5) cut-off, second switch (M2, M2, M6) conducting, so that gating is not
Same switching pathway.Certain first switch tube (M1, M3, M5) and second switch (M2, M2, M6) can also use analog switch
It realizes, using one input interface of analog switch and two delivery outlets gates different switching pathways.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, each ON-OFF control circuit 300 further includes first resistor
(R1, R2, R3), one end of the first resistor and the first switch tube (M1, M3, M5) and second switch (M2,
M2, M6) controlled end interconnection, the first resistor (R1, R2, R3) the other end ground connection.
In the present embodiment, first resistor (R1, R2, R3) is pull down resistor, for guaranteeing in display device original state,
The trigger signal that the controlled end of first switch tube (M1, M3, M5) and second switch (M2, M2, M6) receives is low level, from
And guarantee that the control signal of first switch tube (M1, M3, M5) access is low level.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, the display driving plate is additionally provided with buckle 400, the buckle
400 are set on the circuit substrate 100, and the buckle 400, which is configured to for 100 detachable card of circuit substrate being connected to, is pacified
It loads on body；
The write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3) are corresponding
Buckle 400 installation site setting.
It is understood that in a display device, such as television set, generally there is casing, display panel 500, display to drive
The components such as movable plate, the master control borad of display device, backlight module composition, when assembling to display device, display panel 500 is logical
It crosses flexible circuit board to connect with display driving plate, display driving plate shows drive by connector and master control borad communication connection
Movable plate also passes through flexible circuit board and connect the metal area Er for showing driving plate with the ground of display mainboard, with forming equipotentiality.So
And during this assembling or carrying, flexible circuit board is easy to fall off, and will lead to display driving plate and master control borad so not
It can altogether.
In addition, in the assembling process of display device, in order to guarantee casing, display panel 500, display driving plate, display
Master control borad, backlight module of device etc. can install fixation, and relative motion will not occur between each module.In display driving plate
Circuit substrate 100 on be further typically provided with buckle 400, it is corresponding, on the master control borad and casing of display device generally also
Buckle 400 be adapted to buckle 400 are provided with, realize the clamping of the two.The present embodiment is in practical application, switch control is electric
Road 300 and is made write-protect signal input pad piece Pad4 and multiple tests letter by the triggering of low level write-protect signal
Number spacer (Pad1~Pad3) is electrically connected with metal area Er.And write-protect signal input pad piece Pad4 and multiple described
Test signal input pad piece (Pad1~Pad3) correspondence buckles 400 installation site setting, thus in display driving plate and master
It, can be defeated by buckle 400, write-protect signal input pad piece Pad4 and multiple test signals when controlling plate or casing clamping
Enter gasket (Pad1~Pad3) and realizes that the metal area Er of display driving plate is electrically connected with the ground of master control borad.The present invention passes through switch
Control circuit 300 come control write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3) come with
The ground of master control borad is electrically connected, and be can solve during this assembling of display device or carrying, is connected by flexible circuit board
The metal area Er of display driving plate and the ground of master control borad are met, flexible circuit board is easy to fall off, and will lead to display driving plate and master
Control the problem of plate cannot altogether.
Referring to figs. 1 to Fig. 4, in an alternative embodiment, the circuit substrate 100 has the upper surface being oppositely arranged under
Surface；
The write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3) are all provided with
It is placed in the upper surface of the circuit substrate 100；
Alternatively, the write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3)
It is divided into the upper and lower surfaces of circuit substrate 100.
In the present embodiment, the quantity for buckling 400 can be one, be also possible to multiple, write-protect signal input pad piece
Pad4 and multiple test signal input pad pieces (Pad1~Pad3) can correspond to 400 setting of a buckle, can also distinguish
It is arranged in a one-to-one correspondence with each buckle 400.In the present embodiment, write-protect signal input pad piece Pad4 and multiple test signals are defeated
Entering gasket (Pad1~Pad3) can be set to golden finger, and golden finger can be layed in the inner sidewall of buckle 400, in master control borad
When being connect with the buckle of circuit substrate 100 400, it can be electrically connected with the conductive part being set on master control borad, to realize master control borad
Altogether with display driving plate.
Further, the quantity of the buckle 400 is two, the write-protect signal input pad piece Pad4 and multiple described
Test signal input pad piece (Pad1~Pad3) respectively corresponds the installation site setting of two buckles 400；
Alternatively, the write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3)
The position position of the corresponding same buckle 400.
The present invention also proposes a kind of display driving plate, and referring to figs. 1 to Fig. 4, the display driving plate includes:
Circuit substrate 100；
Memory 20 is set on the circuit substrate 100, and the memory 20 is configured to storage driving display panel
The operational data of 500 work；
Write-protect signal input pad piece Pad4 and multiple test signal input pad pieces (Pad1~Pad3), the write-protect letter
Number spacer Pad4 and multiple test signal input pad pieces (Pad1~Pad3) are all set in the circuit substrate 100
On；
Metal area Er is set on the circuit substrate 100；
ON-OFF control circuit 300 is set on the circuit substrate 100, and the ON-OFF control circuit 300 is configured to root
According to the level level of the write-protect signal of write-protect signal input pad piece Pad4 access, the test signal input pad is controlled
Piece (Pad1~Pad3) is electrically connected with the metal area Er, or the control test signal input pad piece (Pad1~Pad3)
It is electrically connected with the driving chip 200.
The invention shows driving plates by setting circuit substrate 100, and setting write-protect signal is defeated on circuit substrate 100
Enter gasket Pad4 and multiple test signal input pad pieces (Pad1~Pad3), metal area Er and ON-OFF control circuit 300,
Level level with the write-protect signal accessed according to write-protect signal input pad piece Pad4, control test signal input pad piece
(Pad1~Pad3) is electrically connected with the metal area Er, or control test signal input pad piece (Pad1~Pad3) with it is described
Memory 20 is electrically connected.The present invention controls write-protect signal input pad piece Pad4 and multiple surveys by ON-OFF control circuit 300
Trial signal spacer (Pad1~Pad3) to be electrically connected with burning jig, and memory both may be implemented without connecting with connector
20 burning program.So set, carrying out test device more to the driver in multiple display driving plates simultaneously
It is newly, easy to operate, it is easy to accomplish, the time consumed by the more new procedures of display driving plate when batch production can be shortened, mentioned
High productivity.The present invention, which solves program version and needs to update or modify, needs staff to display driving plate block-by-block
Be updated, and then to consume a large amount of time, manpower and material resources, lead to the problem that productivity is low.And the present invention is not necessarily to
Display panel 500 is moved, also solves when program updates, moves display panel 500, the drive being easy to cause in display driving plate
The problem of dynamic chip 200 is lost.
Referring to figs. 1 to Fig. 4, in above-described embodiment, the circuit substrate 100 has circuit-wiring layer (not shown go out), institute
State circuit-wiring layer include for sequence controller 10, the power management integrated circuit 30 and memory 20 installation installation position and
Connect the signal wire of each installation position and corresponding conductive through hole.
In the present embodiment, circuit-wiring layer is formed on circuit substrate 100 and is corresponded to according to the circuit design of display driving plate
Route and the corresponding installation position for the installation of each electronic component, i.e. pad copper foil is specifically laid on circuit substrate 100
On, and copper foil is etched according to preset circuit design, to form circuit-wiring layer.
Referring to figs. 1 to Fig. 4, in a preferred embodiment, the display driving plate further includes Bonding (binding) area (figure
It is not shown), Bonding (binding) area is arranged for carrying out sequence controller and is electrically connected with source electrode drive circuit 70.
In the present embodiment, it is to be understood that be additionally provided with two blocks of X-PCB plates on the bottom edge of viewing area, X-PCB plate is used for
Source electrode drive circuit 70 is installed, display driving plate is connect by two blocks of X-PCB plates with source electrode drive circuit 70.Show driving plate also
It is provided with Bonding (binding) area, the area Bonding is electrically connected for realizing sequence controller with source electrode drive circuit 70, aobvious
When showing that driving plate forms circuit-wiring layer, copper foil is reserved in the area Bonding.
Referring to figs. 1 to Fig. 4, in a preferred embodiment, the circuit substrate 100 further includes for supplying the Bonding
(binding) area connects the flexible circuit board (not shown go out) of source electrode drive circuit 70, and the flexible circuit board quantity is two.
In the present embodiment, flexible electrical can be passed through between the X-PCB plate and circuit substrate 100 of source electrode drive circuit 70 by installing
Road plate is electrically connected to realize, certainly in other embodiments, electrical connection can also be realized by conducting wire.It is understood that
It is that in other embodiments, X-PCB plate can also be combined into one with circuit substrate 100, integrates, when X-PCB plate and electricity
Base board 100 is combined into one, and when integrating, source electrode drive circuit 70 is then arranged in the area Bonding.X-PCB plate, circuit base
Plate 100, and drive the Y-PCB plate three of integrated chip that can also be integrated in circuit substrate 100 simultaneously for installing grid, herein
With no restrictions.
The present invention also proposes a kind of display device, and the display device includes display panel 500, conduct piece and as described above
Display driving plate.The detailed construction of the display driving plate can refer to above-described embodiment, and details are not described herein again；It is understood that
It is, due to having used above-mentioned display driving plate in the display device of that present invention, the embodiment of the display device of that present invention includes
Whole technical solutions of above-mentioned display driving plate whole embodiments, and technical effect achieved is also identical, herein no longer
It repeats.
The display is driven through the conduct piece and is electrically connected with the display panel 500.In the present embodiment, the conduct piece
It can be electric connector, be also possible to the electrical connectors such as flexible circuit board, conductive fabric.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of display driving plate, which is characterized in that the display driving plate includes:
Circuit substrate；
Driving chip is set on the circuit substrate, and the driving chip is configured to driving display panel work；
Write-protect signal input pad piece and multiple test signal input pad pieces, the write-protect signal input pad piece and multiple described
Test signal input pad piece is all set on the circuit substrate, and is arranged close to the side of the circuit substrate；
Metal area, is set on the circuit substrate；
ON-OFF control circuit is set on the circuit substrate, the ON-OFF control circuit, is configured to be believed according to the write-protect
The level level of the write-protect signal of number spacer access, controls the test signal input pad piece and metal area is electric
Connection, or the control test signal input pad piece are electrically connected with the driving chip.
2. display driving plate as described in claim 1, which is characterized in that the ON-OFF control circuit, concrete configuration is in institute
When the write-protect signal for stating the access of write-protect signal input pad piece is high level, control the test signal input pad piece with it is described
Driving chip electrical connection；
When the write-protect signal of write-protect signal input pad piece access is low level, the test signal input pad is controlled
Piece is electrically connected with the metal area.
3. display driving plate as described in claim 1, which is characterized in that the quantity of the test signal input pad piece is three
It is a, and three test signal input pad pieces are respectively clock signal input gasket, data-signal spacer and power supply letter
Number spacer.
4. display driving plate as claimed in claim 3, which is characterized in that the quantity of the ON-OFF control circuit and the test
The quantity of signal input pad is corresponding, and respectively first switch control circuit, second switch control circuit and third switch control
Circuit；
The controlled end of the first switch control circuit, the controlled end of the second switch control circuit and third switch control
The controlled end of circuit processed is electrically connected with the write-protect signal input pad piece respectively；
The input terminal of the first switch control circuit is connect with the clock signal input gasket, the first switch control electricity
First output end on road is connect with the metal area, and second output terminal is connect with the driving chip；
The input terminal of the second switch control circuit is connect with the data-signal spacer, the second switch control electricity
First output end on road and metal area, second output terminal are connect with the driving chip；
The input terminal of the third ON-OFF control circuit is connect with the power supply signal spacer, the third switch control electricity
First output end on road and metal area, second output terminal are connect with the driving chip.
5. display driving plate as claimed in claim 4, which is characterized in that each ON-OFF control circuit includes first switch
Pipe and second switch, the controlled end of the first switch tube and the second switch with the write-protect signal input pad
Piece electrical connection, the input terminal of the input terminal of the first switch tube and the second switch with the test signal input pad
Connection, the output end of the first switch tube are connect with the driving chip；The output end of the second switch and the gold
The electrical connection of possession area.
6. display driving plate as described in claim 1, which is characterized in that the display driving plate is additionally provided with buckle, and institute
It states buckle to be set on the circuit substrate, the buckle is configured to the circuit substrate detachable card being connected to mounted carrier
On；
The write-protect signal input pad piece and corresponding the buckled installation site setting of multiple test signal input pad pieces.
7. display driving plate as claimed in claim 6, which is characterized in that the circuit substrate has the upper surface being oppositely arranged
The lower surface and；
The write-protect signal input pad piece and multiple test signal input pad pieces are all set in the upper of the circuit substrate
Surface；
Alternatively, the write-protect signal input pad piece and multiple test signal input pad pieces are divided into the upper table of circuit substrate
Face and lower surface.
8. display driving plate as claimed in claim 6, which is characterized in that the quantity of the buckle is two, the write-protect
Signal input pad piece and multiple test signal input pad pieces respectively correspond the installation site setting of two buckles；
Alternatively, the write-protect signal input pad piece and multiple test signal input pad pieces correspond to the same buckle
Position position.
9. a kind of display driving plate, which is characterized in that the display driving plate includes:
Circuit substrate；
Memory is set on the circuit substrate, and the memory is configured to the work number of storage driving display panel work
According to；
Write-protect signal input pad piece and multiple test signal input pad pieces, the write-protect signal input pad piece and multiple described
Test signal input pad piece is all set on the circuit substrate；
Metal area, is set on the circuit substrate；
ON-OFF control circuit is set on the circuit substrate, the ON-OFF control circuit, is configured to be believed according to the write-protect
The level level of the write-protect signal of number spacer access, controls the test signal input pad piece and metal area is electric
Connection, or the control test signal input pad piece are electrically connected with the driving chip.
10. a kind of display device, which is characterized in that including display panel, conduct piece and such as claim 1 to 8 any one institute
The display driving plate stated, the display driving plate are electrically connected by the conduct piece with the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559477.8A CN109509416A (en) | 2018-12-19 | 2018-12-19 | Show driving plate and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559477.8A CN109509416A (en) | 2018-12-19 | 2018-12-19 | Show driving plate and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109509416A true CN109509416A (en) | 2019-03-22 |
Family
ID=65753778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811559477.8A Pending CN109509416A (en) | 2018-12-19 | 2018-12-19 | Show driving plate and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509416A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261055A (en) * | 2020-01-21 | 2020-06-09 | 京东方科技集团股份有限公司 | OLED display screen and OLED display device |
| CN113365419A (en) * | 2021-06-04 | 2021-09-07 | 京东方科技集团股份有限公司 | Circuit board and display device |
| WO2023283775A1 (en) * | 2021-07-12 | 2023-01-19 | 重庆康佳光电技术研究院有限公司 | Panel driving structure, driving method, and display apparatus |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04294389A (en) * | 1991-03-22 | 1992-10-19 | Kokusai Electric Co Ltd | Dot matrix display device and write system for multiple display ram of the same |
| KR20080102827A (en) * | 2007-05-22 | 2008-11-26 | 프롬써어티 주식회사 | Monitor burn-in system |
| CN101887703A (en) * | 2010-06-18 | 2010-11-17 | 福建捷联电子有限公司 | Multi-interface structure of liquid crystal display and extended display identification data (EDID) burning method thereof |
| CN105718277A (en) * | 2014-12-05 | 2016-06-29 | 中国长城计算机深圳股份有限公司 | Protection method, device and system for BIOS (Basic Input Output System) update |
| CN105957486A (en) * | 2016-07-05 | 2016-09-21 | 深圳市华星光电技术有限公司 | Display panel driving circuit and display panel |
| CN105957491A (en) * | 2016-07-14 | 2016-09-21 | 深圳市华星光电技术有限公司 | I2c transmission circuit and display device |
| CN106325961A (en) * | 2016-09-14 | 2017-01-11 | 北京小鸟看看科技有限公司 | Burning circuit based on USB interface, virtual reality helmet and MCU firmware burning method |
| CN107705769A (en) * | 2017-11-21 | 2018-02-16 | 深圳市华星光电技术有限公司 | Display device drive system and method and display device |
| CN107871482A (en) * | 2017-10-26 | 2018-04-03 | 惠科股份有限公司 | Display device and its drive circuit and driving method |
-
2018
- 2018-12-19 CN CN201811559477.8A patent/CN109509416A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04294389A (en) * | 1991-03-22 | 1992-10-19 | Kokusai Electric Co Ltd | Dot matrix display device and write system for multiple display ram of the same |
| KR20080102827A (en) * | 2007-05-22 | 2008-11-26 | 프롬써어티 주식회사 | Monitor burn-in system |
| CN101887703A (en) * | 2010-06-18 | 2010-11-17 | 福建捷联电子有限公司 | Multi-interface structure of liquid crystal display and extended display identification data (EDID) burning method thereof |
| CN105718277A (en) * | 2014-12-05 | 2016-06-29 | 中国长城计算机深圳股份有限公司 | Protection method, device and system for BIOS (Basic Input Output System) update |
| CN105957486A (en) * | 2016-07-05 | 2016-09-21 | 深圳市华星光电技术有限公司 | Display panel driving circuit and display panel |
| CN105957491A (en) * | 2016-07-14 | 2016-09-21 | 深圳市华星光电技术有限公司 | I2c transmission circuit and display device |
| CN106325961A (en) * | 2016-09-14 | 2017-01-11 | 北京小鸟看看科技有限公司 | Burning circuit based on USB interface, virtual reality helmet and MCU firmware burning method |
| CN107871482A (en) * | 2017-10-26 | 2018-04-03 | 惠科股份有限公司 | Display device and its drive circuit and driving method |
| CN107705769A (en) * | 2017-11-21 | 2018-02-16 | 深圳市华星光电技术有限公司 | Display device drive system and method and display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261055A (en) * | 2020-01-21 | 2020-06-09 | 京东方科技集团股份有限公司 | OLED display screen and OLED display device |
| CN111261055B (en) * | 2020-01-21 | 2022-02-22 | 京东方科技集团股份有限公司 | OLED display screen and OLED display device |
| CN113365419A (en) * | 2021-06-04 | 2021-09-07 | 京东方科技集团股份有限公司 | Circuit board and display device |
| WO2023283775A1 (en) * | 2021-07-12 | 2023-01-19 | 重庆康佳光电技术研究院有限公司 | Panel driving structure, driving method, and display apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109509416A (en) | Show driving plate and display device | |
| CN106842656B (en) | Display device and method for measuring contact resistance of display device | |
| US7928752B2 (en) | Display device, display device testing system and method for testing a display device using the same | |
| CN102394043B (en) | Integrated source electrode driving system | |
| CN107039467A (en) | A kind of array base palte, display panel and display device | |
| CN107562259A (en) | Display device having touch sensor and driving method thereof | |
| CN101999095A (en) | Active matrix substrate, display device, method for inspecting active matrix substrate, and method for inspecting display device | |
| CN105280149A (en) | Mura compensation data writing apparatus and method | |
| CN103995369A (en) | Array substrate, display panel and test method thereof | |
| US20110249409A1 (en) | Computer motherboard | |
| CN105304054A (en) | Grid driving circuit with electrostatic discharge function and grid driving method | |
| CN107731190A (en) | The drive system and driving method of liquid crystal display device | |
| CN109215558A (en) | Display device | |
| CN109584820B (en) | Time sequence control board, display device and testing device | |
| CN108053795B (en) | Chip on film circuit board, display device and signal processing method | |
| CN116203764A (en) | Display panel and display device | |
| CN101192383A (en) | LCD device and its drive circuit and driving method | |
| CN107316596B (en) | Array substrate tests circuit | |
| CN108492758A (en) | A kind of test control circuit and control method, display base plate, display device | |
| CN203117228U (en) | Connecting device for integrated circuit test | |
| CN105788550B (en) | Gate electrode side fan-out area circuit | |
| CN104238152A (en) | COG (chip on glass) testing method | |
| CN109064957B (en) | Lighting test module | |
| CN110796975A (en) | Display panel and display device | |
| CN106226691A (en) | A kind of test equipment for relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |