CN107342060A - Driving chip and display device - Google Patents
Driving chip and display device Download PDFInfo
- Publication number
- CN107342060A CN107342060A CN201710821320.7A CN201710821320A CN107342060A CN 107342060 A CN107342060 A CN 107342060A CN 201710821320 A CN201710821320 A CN 201710821320A CN 107342060 A CN107342060 A CN 107342060A
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- China
- Prior art keywords
- voltage
- driving chip
- display device
- circuit
- drive circuit
- 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.)
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Classifications
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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
-
- 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
- G09G3/3406—Control of illumination source
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of driving chip, the driving chip is used to drive display panel, the driving chip includes chip motherboard and the source electrode drive circuit being integrated on the chip motherboard, wherein, the driving chip also includes the voltage supply unit being integrated on the chip motherboard, and the voltage supply unit can provide DC voltage.The present invention provides a kind of display device.The driving chip is integrated with source electrode drive circuit and voltage supply unit, so as to improve the integration degree of display device.
Description
Technical field
The present invention relates to field of display devices, in particular it relates to a kind of driving chip and a kind of including the driving chip
Display device.
Background technology
Customer demand more and more higher, it is wherein one big need to the lightening of display device with the development of Display Technique
Ask.
Therefore, how to improve the integration degree of display device turns into this area technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of driving chip and a kind of display device including the driving chip, the drive
Move integrated chip source drive function and the function of voltage is provided, so as to improve the integration degree of display device.
To achieve these goals, as one aspect of the present invention, there is provided a kind of driving chip, the driving chip are used
In driving display panel, the driving chip includes chip motherboard and the source electrode drive circuit being integrated on the chip motherboard,
Wherein, the driving chip also includes the voltage supply unit being integrated on the chip motherboard, the voltage supply unit energy
DC voltage is enough provided.
Preferably, the DC voltage includes analog power voltage, grid opens reference voltage, grid closes reference voltage
At least one of with common electric voltage.
Preferably, source drive signal includes gamma electric voltage and gamma reference voltage.
As another aspect of the present invention, there is provided a kind of display device, the display device include display panel and drive
Dynamic chip, wherein, the driving chip is above-mentioned driving chip provided by the present invention.
Preferably, the display panel is included positioned at the first grid drive circuit of display panel side and positioned at described aobvious
Show the second grid drive circuit of panel opposite side, the display panel includes the first display portion and the second display portion, institute
It is adjacent with the first grid drive circuit to state the first display portion, second display portion and second grid driving electricity
Road is adjacent, and the display device includes two driving chips, a driving chip and first grid driving electricity
Road and first display portion are corresponding, another described driving chip and the second grid drive circuit and described the
Two display portions are corresponding；
The source electrode drive circuit of driving chip corresponding with the first grid drive circuit is first display portion
Source drive signal is provided, the voltage supply unit of driving chip corresponding with the first grid drive circuit is described first
Gate driving circuit and first display portion provide DC voltage；
The source electrode drive circuit of driving chip corresponding with the second grid drive circuit is second display portion
Source drive signal is provided, the voltage supply unit of driving chip corresponding with the second grid drive circuit is described second
Gate driving circuit and second display portion provide DC voltage.
Preferably, on said display panel, the display device also includes external driving mould for the driving chip binding
Block, the external drive module include DC converting circuit and time schedule controller, and the DC converting circuit is used for system electricity
Pressure is converted to digital power voltage, the first output end of the DC converting circuit and the input electricity of the voltage supply unit
Connection, the second output end of the DC converting circuit electrically connect with the first input end of the time schedule controller, the sequential
Second input of controller, which is used to receive, shows signal, and the time schedule controller is used to the display signal being converted to driving
Signal, the first output end of the time schedule controller and the driving signal input electricity of the gate driving circuit of the display device
Connection, the second output end of the time schedule controller and the driving signal input electricity of the source electrode drive circuit of the driving chip
Connection.
Preferably, the external drive module also includes printed circuit board (PCB), the DC converting circuit and the sequential control
Device processed is integrated on the printed circuit board.
Preferably, the display device also includes flexible PCB, and the flexible PCB is by the DC converting circuit
The first output end electrically connected with the input of the voltage supply unit, and the flexible PCB is also by the SECO
Device electrically connects with the gate driving circuit of the display device.
Preferably, the display device also includes backlight and backlight source driving circuit, and the backlight is arranged on described
The incident side of display panel, the backlight source driving circuit is integrated on the printed circuit board, and backlight driver electricity
The output end on road electrically connects with the input of the backlight.
Preferably, the display device also includes interface control module, the first output end of the interface control module with
The input of the DC conversion modules is connected, to provide the system voltage, the interface control for the DC conversion modules
Second output end of molding block is connected with the time schedule controller, to provide display signal for the time schedule controller.
Source electrode drive circuit in driving chip provided by the present invention is used to carry out source drive, voltage to display panel
Feeding unit is used to provide DC voltage required when being driven display panel.Generally, source electrode drive circuit is arranged on
The side of display panel.Voltage supply unit and source electrode drive circuit are integrated on same chip motherboard, drive can be improved
The integration degree of dynamic chip, and then improve the display device integration degree for including the driving chip.And it is possible to pass through
Driving chip is bundled in display panel by the mode of binding, is eliminated voltage supply unit with corresponding circuit (for example, grid
Pole drive circuit) cabling that is electrically connected, so as to reduce the pressure drop in voltage transmitting procedure, lowers energy consumption.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of driving chip provided by the present invention；
Fig. 2 is the schematic diagram of display device provided by the present invention；
Fig. 3 is the signal flow diagram of display device provided by the present invention.
Description of reference numerals
100：Driving chip 110：Chip motherboard
120：Source electrode drive circuit 130：Voltage supply unit
200：Display panel 210：First display portion
220：Second display portion 300：External drive module
310：DC converting circuit 320：Time schedule controller
400：Flexible PCB 500：Backlight source driving circuit
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As one aspect of the present invention, there is provided a kind of driving chip 100, the driving chip 100 are used to drive display surface
Plate, as shown in figure 1, driving chip 100 includes chip motherboard 110 and the source electrode drive circuit being integrated on chip motherboard 110
120, wherein, driving chip 100 also includes the voltage supply unit 130 being integrated on chip motherboard 110, the voltage supply unit
130 can provide DC voltage.
Source electrode drive circuit 120 in driving chip provided by the present invention is used to carry out source drive to display panel,
Voltage supply unit 130 is used to provide DC voltage required when being driven display panel.Generally, source electrode drive circuit
120 are arranged on the side of display panel.It is female that voltage supply unit 130 and source electrode drive circuit 120 are integrated in same chip
On plate 110, the integration degree of driving chip can be improved, so improve include the driving chip display device it is integrated
Degree.And it is possible to which driving chip 100 is bundled in display panel by way of binding, eliminate voltage supply list
The cabling that member 130 is electrically connected with corresponding circuit (for example, gate driving circuit), so as to reduce voltage transmitting procedure
In pressure drop, lower energy consumption.
In the present invention, the species of the DC voltage provided voltage supply unit 130 does not have special requirement, for example,
When display panel is liquid crystal display panel, the DC voltage includes analog power voltage AVDD, grid opens reference voltage,
Grid closes at least one of reference voltage and common electric voltage Vcom.
Liquid crystal display panel includes multiple pixel cells, and thin film transistor (TFT) is provided with each pixel cell.Same a line
Pixel cell in the grid of thin film transistor (TFT) be connected with same grid line.Using gate driving circuit grid is provided to grid line
Cut-in voltage and gate off voltage.Gate turn-on voltage enables to the thin film transistor (TFT) to open, gate off voltage energy
Enough so that the thin film transistor (TFT) is closed.When thin film transistor (TFT) is N-type transistor, gate turn-on voltage is high level voltage
VGH, gate off voltage are low level voltage VGL.Conversely, when the thin film transistor (TFT) is P-type transistor, grid opens electricity
It is high level voltage VGH to press as low level voltage VGL, gate off voltage.In the present invention, voltage supply unit 130 is utilized
Grid is provided to gate driving circuit and opens reference voltage, and gate driving circuit opens reference voltage using the grid and produces grid
Cut-in voltage, provide grid to gate driving circuit using voltage supply unit 130 and close reference voltage, gate driving circuit profit
Reference voltage, which is closed, with the grid produces gate off voltage.
Analog power voltage AVDD be to display device inside analog portion power supply voltage, in general mutual voltage
(that is, TV voltages) is 15V or so, and north bridge chips voltage (that is, NB voltages) is 8V or so.
Common electric voltage Vcom is available to the voltage of the public electrode of display panel.
In the present invention, source drive signal can include gamma electric voltage and gamma reference voltage.
As the second aspect of the invention, there is provided a kind of display device, as shown in Fig. 2 the display device includes showing
Show panel 200 and driving chip 100, wherein, driving chip 100 is above-mentioned driving chip provided by the present invention.
As mentioned above it is possible, due in driving chip 100 integrate source electrode drive circuit 120 and voltage supply unit 130,
So as to improve the integration degree of display device.
Preferably, driving chip 100 is bundled on display panel 200.It is excessive without setting due to having used binding technique
Cabling, so as to reduce various pressure drops of the voltage of the offer of voltage supply unit 130 in transmitting procedure, reduce electric energy and disappear
Consumption.
In order to simplify the structure of circuit, be easy to manufacture, it is preferable that the display panel includes being located at display panel 200 1
The first grid drive circuit A of the side and second grid drive circuit B positioned at the opposite side of display panel 200.
In order to reduce the caloric value of driving chip, it is preferable that display device can include two driving chips 100.Can be with
Display panel 200 is divided into the first display portion 210 and the second display portion 220.Wherein, the first display portion 210 and
One gate driving circuit A is adjacent, and the second display portion 220 is adjacent with second grid drive circuit B.
As shown in Figure 2, display device includes two driving chips 100, specifically, (that is, the Fig. 2 of driving chip 100
The driving chip 100 in middle left side), another driving chip corresponding with first grid drive circuit A and the first display portion 210
100 (that is, the driving chips on right side in Fig. 2) and second grid drive circuit B and the second display portion corresponding 220.
The source electrode drive circuit of driving chip 100 corresponding with first grid drive circuit A is that the first display portion 210 carries
Supply source pole drive signal, the voltage supply unit of driving chip 100 corresponding with first grid drive circuit A drive for first grid
Dynamic circuit A and the first display portion 210 provide DC voltage.
The source electrode drive circuit of driving chip 100 corresponding with second grid drive circuit B is second display portion
220 provide source drive signal, and the voltage supply unit of driving chip 100 corresponding with second grid drive circuit B is second
Gate driving circuit B and the second display portion 220 provide DC voltage.
In fig. 2 in shown embodiment, each independent work of two driving chips, therefore, each driving
Chip all has relatively small load, so as to have less caloric value.
As shown in Figure 3, the display device also includes external drive module 300, and the external drive module 300 includes straight
Flow change-over circuit 310 and time schedule controller 320.The input of DC converting circuit 310 is used to system voltage VDD being converted to number
Word supply voltage DVDD, the first output end of DC converting circuit 310 electrically connect with the input of the voltage supply unit, directly
Second output end of stream change-over circuit 310 electrically connects with the first input end of time schedule controller 320, and the of time schedule controller 320
Two inputs, which are used to receive, shows signal, and display signal can be converted to drive signal by time schedule controller 320.Sequential control
First output end of device 320 processed electrically connects with the driving signal input of the gate driving circuit of the display device, when described
Second output end of sequence controller electrically connects with the driving signal input of the source electrode drive circuit of the driving chip.
Specifically, show that signal includes initial data signal Data, initial clock signal CLK, control signal Control.
Wherein, control signal starts the enable signal of communication for control source electrode drive circuit.
The display signal received can be converted to Low Voltage Differential Signal (LVDs or mini- by time schedule controller 320
LVDs), final data signal Data ', final clock signal clk ', it is initial control signal STV, overseas route signal OE1, overseas
Route signal OE2, grid initial signal CPV, row commencing signal STH, TP1 signal, polarity inversion signal POL.
Time schedule controller 320 can by Low Voltage Differential Signal (LVDs or mini-LVDs), final data signal Data ',
Final clock signal clk ', polarity inversion signal POL, TP1 signal be supplied to source electrode drive circuit.Time schedule controller 320 may be used also
With by initial control signal STV, overseas route signal OE1, overseas route signal OE2, row commencing signal STH, grid starting letter
Number CPV is supplied to gate driving circuit.
In the present invention, so-called DC converting circuit be also those skilled in the art often say " BUCK IC ", it is so-called
Time schedule controller is also " TCON " that those skilled in the art often say.
Wherein, digital power voltage DVDD can be 2.5V.
The voltage supply unit generates grid according to digital power voltage DVDD and opens reference voltage, grid closing reference
Voltage and common electric voltage.
The source electrode drive circuit is according to signal generation gamma electric voltage, the gamma reference voltage received.
In order to improve integration degree, it is preferable that as shown in Fig. 2 the external drive module also includes printed circuit board (PCB)
330, DC converting circuit 310 and time schedule controller 320 are integrated on printed circuit board (PCB) 330.
For the ease of electrical connection, as shown in Fig. 2 the display device also includes flexible PCB 400, the flexible PCB
400 electrically connect the first output end of DC converting circuit 310 with the input of the voltage supply unit, and flexible PCB
400 also electrically connect time schedule controller 320 with the gate driving circuit and source electrode drive circuit of the display device.
In fig. 2 in shown embodiment, display device includes two driving chips, and therefore, display device includes two
Individual flexible PCB 400.
As mentioned above it is possible, display panel can be liquid crystal display panel, therefore, the display device can also include the back of the body
Light source and backlight source driving circuit 500, the backlight are arranged on the incident side of the display panel, backlight source driving circuit
500 are integrated on printed circuit board (PCB) 330, and the output end of backlight source driving circuit 500 and the input of the backlight are electrically connected
Connect.
Backlight source driving circuit 500, which is arranged on, can improve the integration degree of display device on printed circuit board (PCB) 330.
In the present invention, the display device can also include interface control module 600, the interface control module 600
First output end is connected with the input of DC conversion modules 310, to provide the system voltage for the DC conversion modules
VDD.Second output end of the interface control module is connected with the time schedule controller, aobvious to be provided for the time schedule controller
Show signal.
As a kind of embodiment, system voltage VDD can be 12V.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of driving chip, the driving chip is used to drive display panel, and the driving chip includes chip motherboard and collection
Into the source electrode drive circuit on the chip motherboard, it is characterised in that the driving chip also includes being integrated in the chip
Voltage supply unit on motherboard, the voltage supply unit can provide DC voltage.
2. driving chip according to claim 1, it is characterised in that the DC voltage includes analog power voltage, grid
Reference voltage is opened in pole, grid closes at least one of reference voltage and common electric voltage.
3. driving chip according to claim 1 or 2, it is characterised in that source drive signal includes gamma electric voltage and gal
Horse reference voltage.
4. a kind of display device, the display device includes display panel and driving chip, it is characterised in that the driving chip
For the driving chip described in any one in claims 1 to 3.
5. display device according to claim 4, it is characterised in that the display panel includes being located at display panel side
First grid drive circuit and the second grid drive circuit positioned at the display panel opposite side, the display panel include
First display portion and the second display portion, first display portion is adjacent with the first grid drive circuit, and described
Two display portions are adjacent with the second grid drive circuit, and the display device includes two driving chips, an institute
It is corresponding with the first grid drive circuit and first display portion to state driving chip, another described driving chip with
The second grid drive circuit and second display portion are corresponding；
The source electrode drive circuit of driving chip corresponding with the first grid drive circuit provides for first display portion
Source drive signal, the voltage supply unit of driving chip corresponding with the first grid drive circuit is the first grid
Drive circuit and first display portion provide DC voltage；
The source electrode drive circuit of driving chip corresponding with the second grid drive circuit provides for second display portion
Source drive signal, the voltage supply unit of driving chip corresponding with the second grid drive circuit is the second grid
Drive circuit and second display portion provide DC voltage.
6. display device according to claim 4, it is characterised in that the driving chip is bundled in the display panel
On, the display device also includes external drive module, and the external drive module includes DC converting circuit and SECO
Device, the DC converting circuit are used to system voltage being converted to digital power voltage, and the first of the DC converting circuit is defeated
Go out end to electrically connect with the input of the voltage supply unit, the second output end of the DC converting circuit and the sequential control
The first input end electrical connection of device processed, the second input of the time schedule controller, which is used to receive, shows signal, the sequential control
Device processed is used to the display signal being converted to drive signal, the first output end and the display device of the time schedule controller
Gate driving circuit driving signal input electrical connection, the second output end of the time schedule controller and the driving chip
Source electrode drive circuit driving signal input electrical connection.
7. display device according to claim 6, it is characterised in that the external drive module also includes printed circuit
Plate, the DC converting circuit and the time schedule controller are integrated on the printed circuit board.
8. display device according to claim 7, it is characterised in that the display device also includes flexible PCB, institute
Flexible PCB is stated to electrically connect the first output end of the DC converting circuit with the input of the voltage supply unit, and
The flexible PCB also electrically connects the time schedule controller with the gate driving circuit of the display device.
9. the display device according to claim 7 or 8, it is characterised in that the display device also includes backlight and the back of the body
Light source driving circuit, the backlight are arranged on the incident side of the display panel, and the backlight source driving circuit is integrated in institute
State on printed circuit board (PCB), and the output end of the backlight source driving circuit electrically connects with the input of the backlight.
10. the display device according to any one in claim 6 to 8, it is characterised in that the display device also includes
Interface control module, the first output end of the interface control module are connected with the input of the DC conversion modules, thought
The DC conversion modules provide the system voltage, the second output end and the time schedule controller of the interface control module
It is connected, to provide display signal for the time schedule controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710821320.7A CN107342060B (en) | 2017-09-13 | 2017-09-13 | Drive chip and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710821320.7A CN107342060B (en) | 2017-09-13 | 2017-09-13 | Drive chip and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107342060A true CN107342060A (en) | 2017-11-10 |
| CN107342060B CN107342060B (en) | 2019-12-27 |
Family
ID=60215655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710821320.7A Active CN107342060B (en) | 2017-09-13 | 2017-09-13 | Drive chip and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107342060B (en) |
Cited By (4)
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| CN110379386A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | Display panel and display |
| CN110379373A (en) * | 2019-06-14 | 2019-10-25 | 昆山龙腾光电有限公司 | Backlight drive circuit and its control method and liquid crystal display device |
| CN112133256A (en) * | 2019-06-25 | 2020-12-25 | 咸阳彩虹光电科技有限公司 | Display device |
| CN114023769A (en) * | 2021-10-27 | 2022-02-08 | Tcl华星光电技术有限公司 | Chip on film and display module |
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| CN110379386A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | Display panel and display |
| CN110379373A (en) * | 2019-06-14 | 2019-10-25 | 昆山龙腾光电有限公司 | Backlight drive circuit and its control method and liquid crystal display device |
| CN112133256A (en) * | 2019-06-25 | 2020-12-25 | 咸阳彩虹光电科技有限公司 | Display device |
| CN114023769A (en) * | 2021-10-27 | 2022-02-08 | Tcl华星光电技术有限公司 | Chip on film and display module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107342060B (en) | 2019-12-27 |
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