CN107256698A - The drive circuit and its drive module of display panel and display device and manufacture method - Google Patents
The drive circuit and its drive module of display panel and display device and manufacture method Download PDFInfo
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- CN107256698A CN107256698A CN201710334937.6A CN201710334937A CN107256698A CN 107256698 A CN107256698 A CN 107256698A CN 201710334937 A CN201710334937 A CN 201710334937A CN 107256698 A CN107256698 A CN 107256698A
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- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Crystallography & Structural Chemistry (AREA)
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
The present invention is the drive circuit and its drive module and display device and manufacture method about a kind of display panel, a gamma voltage of the drive circuit of display panel by multiple driver elements respectively according to a gamma circuitry produces a referenced drive voltage, multiple D/A conversion circuits receive the referenced drive voltage of those driver elements output, and select one of those referenced drive voltages to be a data drive voltage according to a pixel data respectively, those D/A conversion circuits transmit those data drive voltages to display panel, with display picture, one booster circuit is to produce one first supply voltage, and the first supply voltage is provided to those D/A conversion circuits, an at least boosting unit is to produce one second supply voltage, and the second supply voltage is provided to those driver elements, to reach that drive circuit is not required to external storage capacitors circuit area purpose is saved to reach.
Description
This patent is divisional application, female case patent name：Drive circuit and its drive module and the display of display panel are set
Standby and manufacture method, application number：2013106627712, the applying date：On December 06th, 2013.
Technical field
The invention relates to a kind of drive circuit and its electric module of driving and display device and manufacture method, it espespecially one
Plant the drive circuit and its drive module and display device and manufacture method of display panel.
Background technology
Science and technology is flourished now, and information product species is weeded out the old and bring forth the new, and meets popular different demand.Early stage display
Mostly it is cathode-ray tube (Cathode Ray Tube, CRT) display, due to its bulky big, Er Qiesuo with power consumption
The radiation of generation has the doubt of harm body, therefore, now on the market for the user that long-time uses display
Display old CRT monitor will be replaced by liquid crystal display (Liquid Crystal Display, LCD) gradually.Liquid
Crystal display has compact, Low emissivity and the low advantage of power consumption, also therefore as existing market main flow.
Furthermore, along with scientific and technological quick leap is made because panel is produced in recent years, made the production cost of contact panel big
Width is reduced, therefore contact panel is gradually widely used on general consumption electronic product at present, such as mobile phone
The small electricals such as mobile phone, digital camera, digital music player (MP3), personal digital aid (PDA) (PDA), satellite navigator (GPS)
Device, on these electronic goods, contact panel is configured on the display screen of electrical equipment and used, so as to which user can be handed over
Mutual formula input operation, and greatly improve and the friendliness of interface is linked up between people and machine, and lift input operation efficiency.
Recent mobile phone development is flourishing, and intelligent mobile phone is even more to quickly grow, with the more frivolous demand of mobile phone mechanism, face
Material size and component count just have the demand of diminution or reduction used on plate.Furthermore, single-chip lcd drive chip mould
Block is in order that the smaller more preferable collocation of mechanism, and raising assemble yield and reduction module cost, and reduction external module has turned into important
Trend.Also, dealer is in order under the application of the single power supply of mobile phone, large range of power supply specifications for delivery, such as 2.3V are solved
~4.6V, and the area of the driving chip of driving display panel is reduced, and gradually propose can be while meet the drive of two kinds of demands
Flowing mode.
The data drive circuit (Source driver) of general display device has using operational amplifier (Op-amp) or electricity
The mode of resistance partial pressure drives display panel.The drive circuit of display panel includes multiple D/A conversion circuits and multiple drivings
Unit.Those D/A conversion circuits receive a pixel data respectively, and change pixel data into a pixel signal, those numbers
Those pixel signals are respectively sent to those driver elements by word analog conversion circuit, to produce driving signal, and those drivings are single
Driving signal is sent to display panel by member respectively, for display panel display picture.Wherein drive circuit needs external one liter
Volt circuit, and in order to maintain the output signal level of D/A conversion circuit, so, booster circuit need to couple storage electricity
Hold.However, the capacitance required for storage capacitors is big (about 0.1uF~4.7uF), so storage capacitors need to use external capacitor group
Part, and cause manufacturing cost to increase, if this storage capacitors is arranged in drive circuit, it can more increase the area of drive circuit.
Therefore, how to propose the drive circuit and its drive module of a kind of novel display panel with showing regarding to the issue above
Show equipment and manufacture method, it can reduce the external storage capacitors occupied area of drive circuit, in this embodiment it is not even necessary to external storage
Electric capacity is deposited, the problem of making to solve above-mentioned.
The content of the invention
An object of the present invention, is the drive circuit and its drive module and display device for providing a kind of display panel
And manufacture method, it uses booster circuit and boosting unit respectively by multiple D/A conversion circuits and multiple driver elements
Different supply voltages are provided, reduce the external storage capacitors occupied area of drive circuit, in this embodiment it is not even necessary to external storage
Electric capacity is deposited, to reach saving circuit area, and then cost-effective purpose is reached.
An object of the present invention, is the drive circuit and its drive module and display device for providing a kind of display panel
And manufacture method, it is by the differential unit of those driver elements with output unit respectively using booster circuit and boosting unit institute
Different supply voltages are provided, to improve the stability of driver element output voltage.
An object of the present invention, is to provide a kind of drive circuit of display panel extremely drive module and display device
And manufacture method, it is arranged between a gamma circuitry and those D/A conversion circuits by those driver elements, to subtract
The use of those few driver elements, and reduce circuit area and then reach the purpose for reducing cost.
In order to reach above-mentioned censured each purpose and effect, present invention is disclosed a kind of drive circuit of display panel,
It includes multiple driver elements, multiple D/A conversion circuits, a booster circuit and an at least boosting unit.Those drivings are single
Member produces a referenced drive voltage according to a gamma voltage of a gamma circuitry respectively, and those D/A conversion circuits are received should
The referenced drive voltage of a little driver elements outputs, and its of those referenced drive voltages is selected according to a pixel data respectively
One of be a data drive voltage, those D/A conversion circuits transmit those data drive voltages to the display panel,
With display picture, booster circuit supplies voltage to those digital simulations turn to produce one first supply voltage, and provide first
Circuit is changed, an at least boosting unit supplies voltage to those driver elements to produce one second supply voltage, and provide second.
The present invention more discloses a kind of drive module of display panel, and it includes a flexible circuit board and a chip.It is soft
Circuit board is electrically connected with display panel, and chip is arranged on flexible circuit board, and chip includes multiple driver elements, multiple digital moulds
Intend change-over circuit, a booster circuit and an at least boosting unit.The gamma of those driver elements respectively according to a gamma circuitry
Voltage produces a referenced drive voltage, and those D/A conversion circuits receive the referenced drive electricity of those driver elements output
Pressure, and select one of those referenced drive voltages to be a data drive voltage according to a pixel data respectively, those
D/A conversion circuit transmits those data drive voltages to display panel, and with display picture, booster circuit is to produce one
First supply voltage, and the first supply voltage is provided to those D/A conversion circuits, at least a boosting unit is to produce
One second supply voltage, and the second supply voltage is provided to those driver elements.
The present invention also disclosed a kind of display device, and it includes a display panel, a flexible circuit board and a chip.Display
Panel is to show an image；Flexible circuit board is electrically connected with display panel；Chip is arranged on flexible circuit board, and is produced many
Individual data drive voltage is to display panel, with display picture.Its chips includes multiple driver elements, multiple digital-to-analogue conversions
Circuit, a booster circuit and an at least boosting unit.Those driver elements are produced according to a gamma voltage of a gamma circuitry respectively
A raw referenced drive voltage；Those D/A conversion circuits, receive the referenced drive voltage of those driver elements output, and divide
It is data drive voltage not select one of those referenced drive voltages according to a pixel data, and those digital simulations turn
Change circuit and transmit those data drive voltages to display panel；Booster circuit provides the to produce one first supply voltage
One supplies voltage to those D/A conversion circuits；An at least boosting unit is provided to produce one second supply voltage
Second supplies voltage to those driver elements.
The present invention discloses a kind of drive circuit of display panel again, and it includes multiple D/A conversion circuits, multiple
Driver element, a booster circuit and an at least boosting unit.Those D/A conversion circuits receive the multiple of a gamma circuitry
Gamma voltage, and select one of those gamma voltages to be a referenced drive voltage according to a pixel data respectively；Should
A little driver elements receive the referenced drive voltage of those D/A conversion circuits output respectively, and according to the production of referenced drive voltage
A raw data drive voltage, and transmission data drive voltage is to display panel, with display picture；Booster circuit is to produce one
One supply voltage, and the first supply voltage is provided to those D/A conversion circuits；At least a boosting unit is to produce one
Second supply voltage, and the second supply voltage is provided to those driver elements, wherein those driver elements include a differential unit
With an output unit.Differential unit receives first and supplies voltage, using the power supply as differential unit, and according to referenced drive voltage
Produce a differential voltage；Output unit receives second and supplies voltage, using the power supply as output unit, and according to differential voltage production
Raw data drive voltage.
Brief description of the drawings
Fig. 1 is the block diagram of the display device of the preferred embodiment of the present invention；
Fig. 2 is the block diagram of the data drive circuit of the preferred embodiment of the present invention；
Fig. 3 is the RC equivalent circuits of the online dot structure of source electrode of the display panel of the present invention；
Fig. 4 is the block diagram of the drive circuit of the display panel of the first embodiment of the present invention；
Fig. 5 is the block diagram of the drive circuit of the display panel of the second embodiment of the present invention；
Fig. 6 is the block diagram of the drive circuit of the display panel of the 3rd embodiment of the present invention；
Fig. 7 is the circuit diagram of the driver element of the first embodiment of the present invention；
Fig. 8 is the circuit diagram of the driver element of the second embodiment of the present invention；
Fig. 9 is the block diagram of the drive circuit of the display panel of the fourth embodiment of the present invention；
Figure 10 is the circuit diagram of the boosting unit of the first embodiment of the present invention；
Figure 11 is the block diagram of the drive circuit of the display panel of one the 5th embodiment of the present invention；
Figure 12 is the circuit diagram of the boosting unit of the second embodiment of the present invention；
Figure 13 is the circuit diagram of the boosting unit of the 3rd embodiment of the present invention；
Figure 14 A are the structural representation of display module；
Figure 14 B are the structural representation of the display module of the present invention；And
Figure 15 is the flow chart of the manufacture method of display panel.
【Figure number is to as directed】
1 display device
2 scan drive circuits
3 data drive circuits
32 gamma circuitries
34 drive circuits
340 driver elements
3400,3404 differential units
34000,34002,34004,34006, transistor
34020,34040,34041,34043,
34044,34048,34049,34050,
34051,34052,34052,34053,
34060,34062,3461,3462,3463,
3464
34008,34022,34042,34045 current sources
3402,3406 output units
342 D/A conversion circuits
344 booster circuits
346th, 348 boosting unit
3460 go at express speed electric capacity
Cs1、Cs2Storage capacitors
3470 controlling transistors
3472 diodes
3474 storage inductance
3476 output capacitances
349 line buffers
4 sequential control circuits
5 display panels
50 dot structures
500 resistance
502 electric capacity
6 drive modules
60 flexible circuit boards
62 driving chips
V1~VrGamma voltage
VT1、VT2First sequential signal, the second sequential signal
VS1~VSnTurntable driving signal
Vs1~VsnData drive voltage
VP1, VP2, VP3First supply voltage, the second supply voltage, the 3rd supply voltage
Vref1~VrefnReferenced drive voltage
Embodiment
Some vocabulary have been used among specification and following claims to censure specific component.Art
Middle tool usually intellectual is, it is to be appreciated that hardware manufacturer may call same component with different nouns.This explanation
Book and following claims are not in the way of the difference of title is used as differentiation component, but with component functionally
Difference is used as the criterion of differentiation.It is open for one in the "comprising" of specification in the whole text and follow-up claims mentioned in
Term, therefore " include but be not limited to " should be construed to.In addition, " coupling " one word is included any direct and indirectly electrically connected herein
Take over section.Therefore, if a first device is coupled to a second device described in text, representing the first device directly can electrically connect
The second device is connected to, or is electrically connected indirectly to the second device through other devices or connection means.
In order that the architectural feature of the present invention and the effect reached have a better understanding and awareness, spy is with preferably
Embodiment and cooperation detailed description, are described as follows：
The block diagram of the display device of one preferred embodiment.As illustrated, the display device 1 of the present invention drives comprising one scan
Dynamic circuit 2, a data drive circuit 3, a sequential control circuit 4 and a display panel 5.Scan drive circuit 2 is more to produce
Individual turntable driving voltage Vg1~Vgm, and sequentially transmit those turntable driving voltages Vg1~VgmTo display panel 5, data-driven electricity
Road 3 is to produce multiple data drive voltage Vs1~Vsn, and those turntable driving voltages of correspondence Vg1~VgmAnd transmit those data
Driving voltage Vs1~VsnTo display panel 5, to drive display panel to show image.
Sequential control circuit 4 is to produce one first sequential signal VT1With one second sequential signal VT2, sequential control circuit
4 are respectively transmitted the first sequential signal VT1With the second sequential signal VT2To scan drive circuit 2 and data drive circuit 3, to control
Scan drive circuit 2 is sent to the turntable driving voltage V of display panel 5g1~VgmBe synchronized with data drive circuit 3 be sent to it is aobvious
Show the data-driven signal V of panel 5s1~Vsn, that is to say, that as the transmission turntable driving voltage of scan drive circuit 2 Vg1To display
During panel 5, data drive circuit 3 then corresponds to turntable driving voltage Vg1Transmit those data drive voltages Vs1~VsnTo display surface
Plate 5, to drive display panel 5 to show the image of first row；As the transmission turntable driving voltage of scan drive circuit 2 Vg2To display surface
During plate 5, data drive circuit 3 then corresponds to turntable driving signal Vg2Transmit those data drive voltages Vs1~VsnTo display panel
5, to drive display panel 5 to show the image of secondary series, by that analogy, and drive display panel 5 to show a whole display picture.
Referring to Fig. 2, the block diagram of the data drive circuit for the preferred embodiment of the present invention.As illustrated, data
Drive circuit 3 includes a gamma (Gamma) circuit 32 and one drive circuit 34.Gamma circuitry 32 is produced according to a gamma curve
Multiple gamma voltages, gamma circuitry 32 transmits those gamma voltages to drive circuit 34, and wherein those gamma voltages are different positions
The voltage signal of rank, drive circuit 34 receives those gamma voltages and multiple pixel datas, and drive circuit 34 is respectively according to those
Pixel data and select one of those gamma voltages, and correspondence those pixel datas produce those data drive voltages Vs1
~Vsn, and transmit those data drive voltages Vs1~VsnTo display panel 5, to drive display panel 5 to show image.
It is the RC equivalent circuits of the online dot structure of source electrode for display panel of the invention also referring to Fig. 3.As schemed
Shown, it is a Thin Film Transistor-LCD (TFT-LCD) that a preferred embodiment of the invention, which is applied to display panel 5,.It is aobvious
Show that panel 5 includes each source electrode in multiple dot structures 50, those dot structures 50 coupling drive circuit 34, display panel 5
Online dot structure 50 is a thin film transistor (TFT) (Thin-Flim Transistor, TFT), and dot structure 50 can be equivalent to
One resistance 500 is series at an electric capacity 502.
Referring to Fig. 4, the block diagram of the drive circuit for the display panel of the first embodiment of the present invention.As schemed
Show, the drive circuit 34 of display panel of the invention includes multiple driver elements 340, multiple D/A conversion circuits 342, one
Booster circuit 344 and an at least boosting unit 346.Those driver elements 340 couple gamma circuitry 32, those driver elements 340
Respectively according to gamma circuitry 32 gamma voltage V1~Vr, and produce a referenced drive voltage, that is to say, that gamma circuitry 32
Multiple output lines are respectively coupled to those driver elements 340, and gamma circuitry 32 is respectively transmitted those gammas via those output lines
Voltage V1~VrTo those driver elements 340, those driver elements 340 are driven to produce multiple referenced drive voltage V respectivelyref1~
Vrefr, and transmit those referenced drive voltages Vref1~VrefrTo those D/A conversion circuits 342.
Those D/A conversion circuits 342 couple those driver elements 340, and receive those driver elements 340 and transmit
Those referenced drive voltages Vref1~VrefrWith those pixel informations, and those are selected to join according to those pixel datas respectively
Examine driving voltage Vref1~VrefrOne of be data drive voltage Vs, those D/A conversion circuits 342 transmission those
Data drive voltage Vs1~VsnTo display panel 5, with display picture, that is to say, that each D/A conversion circuit 342
Those referenced drive voltages V can all be receivedref1~Vrefr, and select those referenced drive voltages according to those pixel datas
Vref1~VrefrOne of be data drive voltage Vs, so, those D/A conversion circuits 342 produce those data
Driving voltage Vs1~Vsn, and transmit those data drive voltages Vs1~VsnTo display panel 5, with display picture.Wherein those pictures
Plain data can according to this be provided with buffer 349, or reference picture 2, be provided according to this by the input of drive circuit 34.
Booster circuit 344 couples gamma circuitry 32 and those D/A conversion circuits 342, and booster circuit 344 is used to
Produce one first supply voltage VP1, and the first supply voltage V is providedP1To gamma circuitry 32 and those D/A conversion circuits
342.An at least boosting unit 346 couples those driver elements 340, and to produce one second supply voltage VP2, and provide the
Two supply voltage VP2To those driver elements 340.In the present embodiment, produce second using only a boosting unit 346 and supply
Voltage VP2, and provide second and supply voltage VP2To those driver elements 340, wherein boosting unit 346 couples the electric capacity C that goes at express speedf1With
Cf2And storage capacitors Cs1, the coupling of driver element 340 goes at express speed electric capacity Cf3With Cf4And storage capacitors Cs2.According to above-mentioned, those
Driver element 340 can have an other power supply to supply with those D/A conversion circuits 342, gamma circuitry 32 and those numerals
Analog conversion circuit 342 can have an other power supply supply.In this way, the present invention is by those boosting units 346 and booster circuit
344 not Ti Gong voltage give its correspondence component, to reduce external storage capacitors Cs1And Cs2Area, in this embodiment it is not even necessary to it is external
Storage capacitors Cs1, and reach the purpose for saving circuit area.
Furthermore, due to display panel 5 source electrode line quantity be more than gamma circuitry 32 output line, so, the present embodiment by
It is arranged at by those driver elements 340 between gamma circuitry 32 and those D/A conversion circuits 342, that is to say, that those
Driver element 340 is arranged at the output line of gamma circuitry 32, then can reduce the use of those driver elements 340, and reduces electricity
Accumulate and then reach the purpose for reducing cost in road surface.
In addition, the drive circuit of the present invention further includes a line buffer 349.Line buffer 349 is configured to temporarily store those pixels
Data, and those pixel datas are sent to those D/A conversion circuits 342.
Please refer to fig. 5, the block diagram of the drive circuit for the display panel of the second embodiment of the present invention.As schemed
Shown, the present embodiment place different from Fig. 4 embodiment is the present embodiment using two boosting units 346,348, boosting is single
Member 346,348 produces second and supplies voltage V respectivelyP2With one the 3rd supply voltage VP3, the transmission of boosting unit 346 second supply electricity
Press VP2To the first half driver element 340 of those driver elements 340, and the supply voltage VP3 of the transmission of boosting unit 348 the 3rd extremely should
The later half driver element 340 of a little driver elements 340.In addition, boosting unit 346,348 it is not absolutely required to distribute each half
Those driver elements 340, can also distribute different ratios, and such as boosting unit 346 is responsible for first three point of those driver elements 340
One, boosting unit 348 is responsible for the two of latter three points of those driver elements 340, or to be responsible for those drivings single for boosting unit 346
The one of first four points of member 340, boosting unit 348 is responsible for the third of latter four points of those driver elements 340.
In addition, the invention is not limited in one or two boosting units are used, the present invention can be from a boosting unit
To those driver elements 340, until a boosting unit is all invention which is intended to be protected to a driver element 340.
It is the block diagram of the drive circuit of the display panel of the 3rd embodiment of the present invention also referring to Fig. 6 and Fig. 7
With the circuit diagram of the driver element of the first embodiment of the present invention.As illustrated, the present embodiment is different from Fig. 4 embodiment
Place, is those driver elements 340 of the present embodiment while first produced by receiving booster circuit 344 supplies voltage VP1With liter
Press the second supply voltage V produced by unit 346P2, i.e., as shown in fig. 7, the driver element 340 of the present embodiment includes a differential list
The output unit 3402 of member 3400 and one.Differential unit 3400 receives first and supplies voltage VP1, using the electricity as differential unit 3400
Source, and produce a differential voltage V according to gamma voltage 32d, second supply voltage of the reception of output unit 3402 VP2, to be used as output
The power supply of unit 3402, and according to differential voltage VdProduce referenced drive voltage Vref。
From the above, the differential unit 3400 of the present embodiment includes transistor 34000, transistor 34002, transistor
34004th, transistor 34006 and current source 34008.The gate terminal of transistor 34000 couples the output line of gamma circuitry 32, to connect
The gamma voltage that gamma circuitry 32 is exported is received, a first end of a first end coupling transistors 34002 of transistor 34000 is brilliant
The gate terminal of body pipe 34002 couples the output end of driver element 340, one second end coupling transistors 34004 of transistor 34002
A first end, the one second end coupling power end of transistor 34004, to receive the first supply that booster circuit 344 provided
Voltage VP1, the gate of the gate terminal coupling transistors 34006 of transistor 34004 and the first end of transistor 34004, transistor
One second end of a 34006 first end coupling transistors 34000, the one second end coupling power end of transistor 34006, to connect
Receive the first supply voltage V that booster circuit 344 is providedP1, the of a first end coupling transistors 34000 of current source 34008
One end and the first end of transistor 34002, the one second end coupling reference potential of current source 34008.
Furthermore, the output unit 3402 of the present embodiment includes transistor 34040 and current source 34022.Transistor 34040
Second end of gate coupling transistors 34000 and the first end of transistor 34006, the first end coupling driving of transistor 34020
The output end of unit 340, the second end coupling power end of transistor 34020, to receive the second supply of the output of boosting unit 346
Voltage VP2, the output end of the first end coupling driver element 340 of current source 34022, the one second end coupling of current source 34022
Reference potential.In this way, the present embodiment is used respectively by the differential unit 3400 of those driver elements 340 with output unit 3402
Booster circuit 344 and boosting unit 346 not Ti Gong voltage give its corresponding component, to improve the output voltage of driver element 340
Stability.
In addition, the present invention rises except the differential unit 3400 of those driver elements 340 is used respectively with output unit 3402
Volt circuit 344 and boosting unit 346 provides other supply voltage outside, those driver elements 340 of the invention it is differential
Unit 3400 can also receive the second supply voltage V that boosting unit 346 is provided simultaneously with output unit 3402P2。
Referring to Fig. 8, the circuit diagram of the driver element for the second embodiment of the present invention.As illustrated, the present embodiment
The place different from Fig. 7 embodiment, is that the driver element 340 of the present embodiment uses a differential unit 3404 of track to track, institute
So that the driver element 340 of the present embodiment includes the output unit 3406 of differential unit 3404 and one.Differential unit 3404 is brilliant comprising one
Body pipe 34040~34053.
The gate terminal of transistor 34040 couples the output end of gamma circuitry 32, and the first end coupling of transistor 34040 is brilliant
One first end of body pipe 34041, one second end of transistor 34040 is coupled between transistor 34046 and transistor 34048,
The gate terminal of transistor 34041 is coupled to the output end of driver element 340, and one second end of transistor 34041 is coupled to crystal
Between pipe 34047 and 34049, first end and the transistor 34041 of a first end coupling transistors 34040 of current source 34042
First end, the one second end coupling power end of current source 34042, to receive the first supply electricity that booster circuit 344 provided
Press VP1, the output end of the gate coupling gamma circuitry 32 of transistor 34043, a first end coupling transistors of transistor 34043
Between 34044 first end, one second end coupling transistors 34050 and 34052 of transistor 34043, transistor 34044
Gate terminal is coupled to the output end of driver element 340, one second end coupling transistors 34051 and 34053 of transistor 34044 it
Between, the first end of a first end coupling transistors 34043 of current source 34045 and the first end of transistor 34044, current source
34045 one second end is coupled to reference potential.
Connect described, the gate of the gate coupling transistors 34047 of the transistor 34046 of the present embodiment, transistor 34046
A first end coupling reference potential, a first end of one second end coupling transistors 34048 of transistor 34046.Transistor
34047 first end coupling reference potential, gate terminal and the crystalline substance of one second end coupling transistors 34047 of transistor 34047
One first end of body pipe 34049.The gate terminal of transistor 34048 receives one first reference voltage Vb1, the one of transistor 34048
One first end of two end coupling transistors 34052.One gate terminal of transistor 34049 receives the first reference voltage Vb1, transistor
One first end of 34049 one second end coupling transistors 34053.
One gate terminal of one gate terminal coupling transistors 34051 of transistor 34050, a first end of transistor 34050
One second end of coupling transistors 34052, the one second end coupling power end of transistor 34050, to receive the institute of booster circuit 344
First supply voltage V of outputP1.One second end of one first end coupling transistors 34053 of transistor 34051 and transistor
34051 gate terminal, the one second end coupling power end of transistor 34051, first exported with receiving booster circuit 344 supplies
Answer voltage VP1.The gate terminal of transistor 34052 and transistor 34053 receives the second reference voltage Vb2。
The output unit 3406 of the present embodiment includes a transistor 34060 and 34062.One gate terminal of transistor 34060
Second end of the first end of coupling transistors 34050, the second end of transistor 34052 and transistor 34043, transistor 34060
A first end coupling transistors 34062 a first end and driver element 340 output end, the one second of transistor 34060
End coupling power end, to receive the second supply voltage V of the output of boosting unit 346P2.The gate terminal coupling of transistor 34062
Second end at the second end of transistor 34046, the first end of transistor 34048 and transistor 34040, the one of transistor 34062
Second end couples reference potential.So, it can avoid when load makes output current significantly change, and it is single to have influence on those drivings
The power supply of the differential unit 3404 of member 340, and then the differential voltage V for influenceing differential unit 3404 to exportdLevel.In this way, this
Embodiment provides individual using booster circuit 344 and boosting unit 346 respectively by differential unit 3404 and output unit 3406
Other supply voltage, to improve the stability of the output voltage of driver element 340.
It is the block diagram of the drive circuit of the display panel of the fourth embodiment of the present invention also referring to Fig. 9.As schemed
Shown, the present embodiment place different from Fig. 6 embodiment is those driver elements 340 and those digital moulds of the present embodiment
The position for intending change-over circuit 342 is mutually exchanged, that is to say, that the output end of gamma circuitry 32 is coupled to those digital-to-analogue conversions
Circuit 342, the output end of those D/A conversion circuits 342 is respectively coupled to those driver elements 340, i.e. those digital simulations
Change-over circuit 342 receives those gamma voltages V of gamma circuitry 321~Vr, and select those gammas according to pixel data respectively
Voltage V1~VrOne of be a referenced drive voltage Vref, those driver elements 340 receive respectively those digital simulations turn
Change the referenced drive voltage V of circuit outputref1~Vrefn, and according to referenced drive voltage VrefA data drive voltage Vs is produced,
And transmission data drive voltage Vs is to display panel 5, with display picture.As for the part of booster circuit 344 and boosting unit 346
It is identical all with Fig. 6 embodiment, so just being repeated no more in this.
Those driver elements 340 of the present embodiment are also such as Fig. 6 embodiment, and those driver elements 340 are received and risen simultaneously
The first supply voltage V produced by volt circuit 344P1With the second supply voltage V produced by boosting unit 346P2, i.e., using Fig. 7 as
Example, differential unit 3400 receives first and supplies voltage VP1, using the power supply as differential unit 3400, and output unit 3402 is received
Second supply voltage VP2, using the power supply as output unit 3402, in this way, the drive circuit of the display panel of the present embodiment also may be used
To use booster circuit 344 and boosting unit respectively by the differential unit 3400 of those driver elements and output unit 3402
346 provide other supply voltage, to improve the stability of driver element output voltage.
Referring to Fig. 10, the circuit diagram of the boosting unit for the first embodiment of the present invention.As illustrated, the present embodiment
Boosting unit 346 can be a capacitance type voltage-boosting circuit, boosting unit 346 comprising one go at express speed electric capacity 3460, transistor 3461~
A 3464 and storage capacitors Cs1.Electric capacity 3460 go at express speed to produce the second supply voltage VP2, one end of transistor 3461, which is coupled, to fly
Speed one end of electric capacity 3460, the other end of transistor 3461 receives an input voltage VIN, and be controlled by one first control signal XA,
Transistor 3462 is coupled to go at express speed electric capacity 3460 and transistor 3461, and is controlled by one second control signal XB, to export second
Supply voltage VP2, one end coupling of transistor 3463 goes at express speed the other end of electric capacity 3460, and the other end of transistor 3463 receives defeated
Enter voltage VIN, and it is controlled by the second control signal XB, one end of transistor 3464 couples go at express speed electric capacity 3460 and transistor 3463,
The other end of transistor 3464 couples an earth terminal, and is controlled by the first control signal XA, and storage capacitors Cs1One end coupling
Connect transistor 3462, storage capacitors Cs1The other end coupling earth terminal, to store and export the second supply voltage VP2.In this way, this
The boosting unit 346 of embodiment is receiving input voltage VINAfter, controlled using the first control signal XA and the second control signal XB
Transistor 3461~3464 processed, to produce the second supply voltage VP2And export to those driver elements 340.
Figure 11 is referred to, is the block diagram of the drive circuit of the display panel of one the 5th embodiment of the present invention.As schemed
Show, the present embodiment place different from the above embodiments, storage capacitors need not be set by being the boosting unit 346 of the present embodiment
Cs1, that is to say, that have respectively on an access path, access path between boosting unit 346 and those driver elements 340 and do not have
There is connection storage capacitors Cs1.Still further, also storage capacitors can need not be set using boosting unit 346 in Fig. 4
Have between Cs1 design method, that is, boosting unit 346 and those driver elements 340 on an access path, access path
Storage capacitors Cs1 is not connected.Also storage capacitors Cs1 need not can respectively be set using boosting unit 346 and 348 in Figure 5
There is an access path, access path between Cs3 design method, that is, boosting unit 346 and those driver elements 340
On do not connect storage capacitors Cs1, between boosting unit 348 and those driver elements 340 have an access path, access path
On do not connect storage capacitors Cs3.
Referring again to shown in Fig. 7, driver element 340 includes driver element 3400 and output unit 3402.Accordingly, in Figure 11
Shown in boosting unit 346 storage capacitors Cs1 need not be set, also may be designed as boosting unit 346 and output unit 3402 it
Between there is an access path, without connection storage capacitors Cs1 on access path.Still further, in figure 6 also can be using liter
Pressure unit 346 need not be set between storage capacitors Cs1 design method, that is, boosting unit 346 and output unit 3402
It is no on access path to connect storage capacitors Cs1 with an access path.
In addition, referring back to Fig. 7 and Fig. 8, driver element 340 includes differential unit 3400,3404 and output unit 3402,
3406.Boosting unit 346 is coupled to the output unit 3402,3406 of driver element 340, so, boosting unit 346 is single with output
Have between member 3402,3406 on access path, this access path without connection storage capacitors Cs1.Except the above embodiments
It is outer, boosting unit 340 can also couple the differential unit 3400,3404 and output unit 3402,3406 of driver element 340,
So, there is access path respectively between boosting unit 346 and differential unit 3400,3404 and output unit 3402,3406, this
Without connection storage capacitors Cs1 on access path.
It is the circuit diagram of the boosting unit of the second embodiment of the present invention also referring to Figure 12.As illustrated, this reality
The example place different from Figure 10 embodiment is applied, storage capacitors C need not be used by being the boosting unit 346 of the present embodiments1, due to this
The boosting unit 346 of invention is provided for the second supply voltage V of those driver elements 340P2, and driver element 340 is only needed
Driving panel (display panel 5 as shown in Figure 4) is wanted, it does not bear D/A conversion circuit (digital simulation as shown in Figure 4
Change-over circuit 342) function of exact reference voltage is maintained, therefore significantly vibration of the power supply in the case of without storage capacitors can be allowed,
So, the boosting unit 346 of the present embodiment can only need to use the electric capacity 3460 that goes at express speed to produce second and supply voltage VP2, without outer
Meet storage capacitors Cs1, you can to supply the power supply required for those driver elements 340, and circuit area can be reduced and then reached
The purpose of economization cost.
Figure 13 is referred to, is the circuit diagram of the boosting unit of the 3rd embodiment of the present invention.As illustrated, the present embodiment
The place different from the boosting unit 346 of Figure 11 and Figure 12 embodiments of boosting unit 346, be the boosting unit of the present embodiment
346 be an inductance type boosting unit, the boosting unit 346 of the present embodiment comprising a controlling transistor 3470, a diode 3472,
The one storage output capacitance 3476 of inductance 3474 and one.One end of controlling transistor 3470 receives input voltage VIN, and it is controlled by one
Control signal VC, one end coupling controlling transistor 3470 of diode 3472, the other end coupling earth terminal of diode 3472, storage
The coupling controlling transistor 3470 of inductance 3474 and diode 3472 are deposited, to store input voltage VINEnergy, and output capacitance
3476 one end coupling storage inductance 3474, the other end coupling earth terminal of output capacitance 3476, to store input voltage VIN's
Energy, and produce the second supply voltage VP2And export to those driver elements 340.In summary, the invention is not limited in liter
It is capacitance type voltage-boosting unit and inductance type boosting unit to press unit 346, as long as there is booster circuit 344 to distinguish with boosting unit 346
Produce first and supply voltage VP1With the second supply voltage VP2, and it is respectively transmitted the first supply voltage VP1With the second supply voltage VP2
All it is invention which is intended to be protected to D/A conversion circuit 342 and driver element 340.
Risen further, since the present invention is used respectively by those D/A conversion circuits 342 and those driver elements 340
Volt circuit 344 provides different supply voltages from boosting unit 346, makes the output capacitance 3476 of the present embodiment and need not use
Bulky capacitor, so, the output capacitance 3476 of the present embodiment can be built into a chip, without being hung on outside outside chip, with up to
To saving circuit area.
Figure 14 A are referred to, are the structural representation of display module.As illustrated, display module includes display panel 5 and one
Drive module 6.Drive module 6 is electrically connected with display panel 5, to drive display panel 5 to show image.Drive module 6 includes one
The driving chip 62 of flexible circuit board 60 and one.
Driving chip 62 is arranged at the side of display panel 5, and is electrically connected with display panel 5, flexible circuit board 60
Side is connected to the side of display panel 5, and is electrically connected at driving chip 62, is hung on outside this embodiment storage capacitors Cs1
On flexible circuit board 60.
It is the structural representation of the display module of the present invention also referring to Figure 14 B based on above-mentioned.As illustrated, this reality
Example is applied in the different place of Figure 14 A embodiment, be the driving chip 62 of the present embodiment comprising those driver elements 340, those
D/A conversion circuit 342, booster circuit 344 and boosting unit 346.Those driver elements 340, those digital-to-analogue conversions
Annexation and start relation between circuit 342, booster circuit 344 and boosting unit 346 all had been described above above-mentioned, in
This will be not repeated here.Because the present embodiment is distinguished by those D/A conversion circuits 342 with those driver elements 340
Other supply voltage is provided using booster circuit 344 and boosting unit 346, makes the required storage electricity of driving chip 62
Holding Cs1 can greatly be reduced, and be directly arranged in driving chip 62, and plug-in storage capacitors Cs1 is not needed in soft to reach
On property circuit board 60, or even driving chip 62 (i.e. drive circuit) does not need external storage capacitors, to reach saving circuit area,
And then reach cost-effective purpose.
It is the flow chart of the manufacture method of display panel also referring to Figure 15.As illustrated, the display panel of the present invention
Manufacture method the step of first carry out step S10 display panel 5, flexible circuit board 60 and driving chip 62 be provided, then perform
Step S12 is set on driving chip 62 to display panel 5 (as shown in Figure 14 A), after, perform step S14 and flexible circuit is set
Plate 60 is electrically connected with driving chip 5 on display panel 5, wherein, storage electricity need not be set on flexible circuit board 60
Hold Cs1 (as shown in Figure 14B).
Based on above-mentioned, because the present invention makes respectively by those D/A conversion circuits 342 with those driver elements 340
Other supply voltage is provided with booster circuit 344 and boosting unit 346, makes the required storage capacitors of driving chip 62
Cs1 can greatly be reduced, and be directly arranged in driving chip 62, and plug-in storage capacitors Cs1 is not needed in soft to reach
On circuit board 60, or even driving chip 62 (i.e. drive circuit) does not need external storage capacitors, so, the present invention does not need many one
Road will be hung on the processing procedure of flexible circuit board 60 outside storage capacitors, and reach the time for shortening process, and then reduce cost.
In addition, the preparation method of the display panel of the present invention further includes a step S16, that is, a backlight module is set (in figure
Do not show) in the lower section of display panel 5, to provide a light source to display panel 5.
In summary, the drive circuit of display panel of the invention by multiple driver elements respectively according to a gamma circuitry
One gamma voltage produces a referenced drive voltage, and the reference that multiple D/A conversion circuits receive the output of those driver elements is driven
Dynamic voltage, and select one of those referenced drive voltages to be a data drive voltage according to a pixel data respectively,
Those D/A conversion circuits transmit those data drive voltages to display panel, and with display picture, a booster circuit is used to
One first supply voltage is produced, and provides first and supplies voltage to those D/A conversion circuits, an at least boosting unit is used
Voltage is supplied to produce one second, and provides second and supplies voltage to those driver elements.In this way, the present invention is by multiple numerals
Analog conversion circuit provides different supply voltages using booster circuit and boosting unit respectively from multiple driver elements, makes drive
The external storage capacitors occupied area of dynamic circuit reduces, in this embodiment it is not even necessary to external storage capacitors, to reach saving circuit area,
And then reach cost-effective purpose.
Above is only presently preferred embodiments of the present invention, not for limiting the scope that the present invention is implemented, Fan Yibenfa
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in bright right, all should be included in the present invention
Right in.
Claims (37)
1. a kind of drive circuit of display panel, it is characterised in that it is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
One boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
2. a kind of drive circuit of display panel, it is characterised in that it is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
3. the drive circuit as described in claim the 1 or 2, it is characterised in that each of which driver element is included：
One differential unit, receive this first supply voltage, using the power supply as the differential unit, and according to those gamma voltages it
One produces a differential voltage；And
One output unit, is received the second supply voltage, is produced using the power supply as the output unit, and according to the differential voltage
The referenced drive voltage.
4. the drive circuit as described in claim the 1 or 2, it is characterised in that each of which driver element is included：
One differential unit, receive this second supply voltage, using the power supply as the differential unit, and according to those gamma voltages it
One produces a differential voltage；And
One output unit, is received the second supply voltage, is produced using the power supply as the output unit, and according to the differential voltage
The referenced drive voltage.
5. the drive circuit as described in claim the 1 or 2, it is characterised in that it includes multiple D/A conversion circuits,
Those D/A conversion circuits receive those referenced drive voltages of those driver elements output, and respectively according to a picture element number
According to and select one of those referenced drive voltages be a data drive voltage, those D/A conversion circuits transmission should
A little data drive voltages are to the display panel.
6. the drive circuit as described in claim the 3, it is characterised in that wherein the differential unit is coupled with the output unit
One reference potential, the gamma voltage determines the referenced drive voltage with the reference potential.
7. the drive circuit as described in claim the 3, it is characterised in that wherein those differential voltages control those defeated respectively
Go out unit and those boosting units is charged respectively to those output units.
8. the drive circuit as described in claim the 4, it is characterised in that wherein the differential unit is coupled with the output unit
One reference potential, the gamma driving voltage determines the referenced drive voltage with the reference potential.
9. the drive circuit as described in claim the 4, it is characterised in that wherein those differential voltages control those defeated respectively
Go out unit and those boosting units is charged respectively to those output units.
10. a kind of drive module of display panel, it is characterised in that it is included：
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
An at least boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
11. a kind of drive module of display panel, it is characterised in that it is included：
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
12. a kind of display device, it is characterised in that it is included：
One display panel, shows a picture；
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, and the display panel is driven, to show the picture, the driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
An at least boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
13. a kind of display device, it is characterised in that it is included：
One display panel, shows a picture；
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, and the display panel is driven, to show the picture, the driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple referenced drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
14. a kind of drive circuit of display panel, it is characterised in that it is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, produce multiple data drive voltages, and transmit those data drive voltages according to those gamma voltages
To the display panel, with display picture；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
One boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
15. a kind of drive circuit of display panel, it is characterised in that it is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, produce multiple data drive voltages, and transmit those data drive voltages according to those gamma voltages
To the display panel, with display picture；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
16. the drive circuit as described in claim the 14 or 15, it is characterised in that it includes multiple digital-to-analogue conversions electricity
Road, each D/A conversion circuit receives those gamma voltages of gamma circuitry generation, and respectively according to a picture element number
According to and select one of those gamma voltages be a referenced drive voltage, those D/A conversion circuits transmit those ginseng
Driving voltage is examined to those driver elements, to produce those data drive voltages.
17. a kind of drive module of display panel, it is characterised in that it is included：
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple data drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
An at least boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
18. a kind of drive module of display panel, it is characterised in that it is included：
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, multiple data drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
19. a kind of display device, it is characterised in that it is included：
One display panel, shows a picture；
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, and multiple data drive voltages are produced to the display panel, to show the picture
Face, the driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, those data drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
An at least boosting unit, produces one second and supplies voltage, and provide the second supply voltage to those driver elements；
Wherein, have between the boosting unit and each driver element on an access path, the access path without connection one
Storage capacitors.
20. a kind of display device, it is characterised in that it is included：
One display panel, shows a picture；
One flexible circuit board, is electrically connected with the display panel；And
One driving chip, the adjacent flexible circuit board, and multiple data drive voltages are produced to the display panel, to show the picture
Face, the driving chip is included：
One gamma circuitry, produces multiple gamma voltages；
Multiple driver elements, those data drive voltages are produced according to those gamma voltages；
One booster circuit, produces one first and supplies voltage, and provide the first supply voltage to the gamma circuitry；
And
Multiple boosting units, produce it is multiple second supply voltages, those boosting units provide those second supply voltages to those
Driver element；
Wherein, have between each boosting unit and each driver element on an access path, the access path and do not connect
Connect a storage capacitors.
21. a kind of manufacture method of display device, it is characterised in that its step is included：
One display panel, a flexible circuit board and a driving chip are provided；
The driving chip is set to the display panel, the driving chip comprising a booster circuit, an at least boosting unit with it is many
Individual driver element；And
The flexible circuit board is set on the display panel, and is electrically connected with the driving chip；
Wherein, a storage capacitors need not be set on the flexible circuit board, an at least boosting unit and those driver elements it
Between there is an access path, do not connect the storage capacitors on the access path, voltage is supplied in booster circuit output one first
To a gamma circuitry, at least boosting unit output one second supplies voltage to those driver elements.
22. the manufacture method as described in claim the 21, it is characterised in that it is included：
One backlight module is set in the lower section of the display panel, to provide a light source to the display panel；
Wherein, the driving chip includes multiple D/A conversion circuits, and those D/A conversion circuits receive first confession
Answer voltage.
23. a kind of drive circuit of display panel, including multiple driver elements, multiple D/A conversion circuits, a boosting electricity
Road and multiple boosting units；The booster circuit, produces one first and supplies voltage, and provide the first supply voltage to those numerals
Analog conversion circuit；Those boosting units, produce multiple second supply voltages, and provide those second supply voltages to those drives
Moving cell；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce multiple data drive voltages, and transmit those data drive voltages to the display panel；
Wherein, have between those boosting units and those driver elements on an access path, the access path without connection one
Storage capacitors.
24. drive circuit as claimed in claim 23, it is characterised in that each of which driver element includes a differential unit
With an output unit, the differential unit couples a reference potential, the referenced drive voltage and the reference potential with the output unit
Determine the data drive voltage.
25. drive circuit as claimed in claim 24, it is characterised in that have wherein between the boosting unit and the output unit
There is access path, without connection storage capacitors on the access path.
26. drive circuit as claimed in claim 23, it is characterised in that each of which driver element includes a differential unit
With an output unit, the differential unit produces a differential voltage according to one of those referenced drive voltages, and this is differential
Voltage controls the output unit and those boosting units is charged each output unit.
27. drive circuit as claimed in claim 26, it is characterised in that the wherein boosting unit and the output unit, the difference
Have respectively between moving cell on access path, the access path without connection storage capacitors.
28. drive circuit as claimed in claim 23, it is characterised in that wherein those boosting units need not set storage electricity
Hold.
29. a kind of drive circuit of display panel, including multiple driver elements, multiple D/A conversion circuits, a boosting electricity
Road and a boosting unit；The booster circuit, produces one first and supplies voltage, and provide the first supply voltage to those digital moulds
Intend change-over circuit；The boosting unit, produces one second and supplies voltage, the boosting unit provides the second supply voltage to those drives
Moving cell；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce multiple data drive voltages, and transmit those data drive voltages to the display panel；
Wherein, have between the boosting unit and those driver elements on an access path, the access path without the storage of connection one
Deposit electric capacity.
30. a kind of drive module of display panel, it includes a flexible circuit board and a driving chip；The flexible circuit board is electrical
The display panel is connected, the driving chip is electrically connected with the flexible circuit board, the driving chip includes multiple driver elements, multiple
D/A conversion circuit, a booster circuit and a boosting unit；The booster circuit, produces one first and supplies voltage, and provide
The first supply voltage is to those D/A conversion circuits；The boosting unit, produces one second and supplies voltage, and provide this
Two supply voltages to those driver elements；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce multiple data drive voltages, and transmit those data drive voltages to the display panel, to show picture
Face；
Wherein, have between the boosting unit and those driver elements on an access path, the access path without the storage of connection one
Deposit electric capacity.
31. a kind of drive module of display panel, it includes a flexible circuit board and a driving chip；The flexible circuit board is electrical
The display panel is connected, the driving chip is electrically connected with the flexible circuit board, the driving chip includes multiple driver elements, multiple
D/A conversion circuit, a booster circuit and multiple boosting units；The booster circuit, produces one first and supplies voltage, and carry
For the first supply voltage to those D/A conversion circuits；Those boosting units, produce multiple second supply voltages, and carry
For those second supply voltages to those driver elements；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce multiple data drive voltages, and transmit those data drive voltages to the display panel, to show picture
Face；
Wherein, have between those boosting units and those driver elements on an access path, the access path without connection one
Storage capacitors.
32. a kind of drive module of display panel, it includes a flexible circuit board and a driving chip；The flexible circuit board is electrical
The display panel is connected, the driving chip is electrically connected with the flexible circuit board, the driving chip includes multiple driver elements, multiple
D/A conversion circuit, a booster circuit and multiple boosting units；The booster circuit, produces one first and supplies voltage, and carry
For the first supply voltage to those D/A conversion circuits；Those boosting units, produce multiple second supply voltages, and carry
For those second supply voltages to those driver elements；Characterized in that, wherein：
Those driver elements, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；And
Those D/A conversion circuits, receive those referenced drive voltages of those driver elements output, and respectively according to one
Pixel data and select one of those referenced drive voltages and produce a data drive voltage, those digital-to-analogue conversions
Circuit transmits those data drive voltages to the display panel, with display picture；
Wherein, have between those boosting units and those driver elements on an access path, the access path without connection one
Storage capacitors.
33. a kind of display device, it includes a display panel, a flexible circuit board and a driving chip；The display panel is shown
One picture, the flexible circuit board is electrically connected with the display panel；The driving chip, is electrically connected with the flexible circuit board, and produce
Multiple data drive voltages are to the display panel, with display picture；The driving chip includes multiple driver elements, multiple digital moulds
Intend change-over circuit, a booster circuit and a boosting unit；The booster circuit, produce one first supply voltage, and provide this first
Voltage is supplied to those D/A conversion circuits；The boosting unit, produces one second and supplies voltage, and provide second supply
Voltage is to those driver elements；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce those data drive voltages, and transmit those data drive voltages to the display panel；
Wherein, have between the boosting unit and those driver elements on an access path, the access path without the storage of connection one
Deposit electric capacity.
34. a kind of display device, it includes a display panel, a flexible circuit board and a driving chip；The display panel is shown
One picture, the flexible circuit board is electrically connected with the display panel；The driving chip, is electrically connected with the flexible circuit board, and produce
Multiple data drive voltages are to the display panel, with display picture；The driving chip includes multiple driver elements, multiple digital moulds
Intend change-over circuit, a booster circuit and multiple boosting units；The booster circuit, produces one first and supplies voltage, and provide this
One supplies voltage to those D/A conversion circuits；Those boosting units, produce multiple second supply voltages, and provide those
Second supplies voltage to those driver elements；Characterized in that, wherein：
Those D/A conversion circuits, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；With
And
Those driver elements, receive those referenced drive voltages of those D/A conversion circuits output, and according to those ginsengs
Examine driving voltage and produce those data drive voltages, and transmit those data drive voltages to the display panel；
Wherein, have between those boosting units and those driver elements on an access path, the access path without connection one
Storage capacitors.
35. a kind of display device, it includes a display panel, a flexible circuit board and a driving chip；The display panel is shown
One picture, the flexible circuit board is electrically connected with the display panel；The driving chip, is electrically connected with the flexible circuit board, and produce
Multiple data drive voltages are to the display panel, with display picture；The driving chip includes multiple driver elements, multiple digital moulds
Intend change-over circuit, a booster circuit and multiple boosting units；The booster circuit, produces one first and supplies voltage, and provide this
One supplies voltage to those D/A conversion circuits；Those boosting units, produce multiple second supply voltages, and provide those
Second supplies voltage to those driver elements；Characterized in that, wherein：
Those driver elements, multiple gamma voltages according to a gamma circuitry produce multiple referenced drive voltages；
Those D/A conversion circuits, receive those referenced drive voltages of those driver elements output, and respectively according to one
Pixel data and select one of those referenced drive voltages and produce the data drive voltage, those digital-to-analogue conversions
Circuit transmits those data drive voltages to the display panel；
Wherein, have between those boosting units and those driver elements on an access path, the access path without connection one
Storage capacitors.
36. a kind of manufacture method of display device, its step includes providing a display panel, a flexible circuit board and a driving core
Piece；Set the driving chip that the flexible circuit board is set to the display panel on the display panel, and with the driving chip
It is electrically connected with；The driving chip includes a booster circuit, multiple boosting units, multiple D/A conversion circuits and multiple drivings
Unit；The booster circuit, produces one first and supplies voltage, and provide the first supply voltage to those digital-to-analogue conversions electricity
Road；Those boosting units, produce multiple second supply voltages, and provide those second supply voltages to those driver elements；Its
It is characterised by：
Wherein, a storage capacitors need not be set on the flexible circuit board, has between those boosting units and those driver elements
There is an access path, without connection storage capacitors on the access path.
37. manufacture method as claimed in claim 31, it is characterised in that it is further included：
One backlight module is set in the lower section of the display panel, to provide a light source to the display panel.
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| CN107256698B (en) | 2021-04-06 |
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