CN102629457A - Driving module of liquid crystal display - Google Patents
Driving module of liquid crystal display Download PDFInfo
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- CN102629457A CN102629457A CN2011102883585A CN201110288358A CN102629457A CN 102629457 A CN102629457 A CN 102629457A CN 2011102883585 A CN2011102883585 A CN 2011102883585A CN 201110288358 A CN201110288358 A CN 201110288358A CN 102629457 A CN102629457 A CN 102629457A
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Abstract
The invention, which relates to the liquid crystal display field, discloses a driving module of a liquid crystal display, so that circuit simplification, reduction of difficulty in wiring, reduction of manufacturing cost of the driving module and the liquid crystal display can be realized. According to the embodiment of the invention, the driving module comprises: a power control unit; a gate driver IC, which is used for controlling row-by-row opening of pixel circuits; at least one time sequence source electrode driver IC, which integrates a time controller into a circuit obtained by the source electrode driver IC and is used for providing data voltages for the pixel circuits. Besides, the power control unit is respectively connected with the gate driver IC and the time sequence source electrode driver IC and is used for controlling a power system to provide power for the gate driver IC according to a clock signal from the time sequence source electrode driver IC.
Description
Technical field
The present invention relates to field of liquid crystal display, relate in particular to a kind of driver module of LCD.
Background technology
At present, the driver module of most of LCDs comprises grid-driving integrated circuit, source electrode driven integrated circuit, time schedule controller and power control unit, because time schedule controller need be produced on printed circuit board (Printed Circuit Board; Be called for short PCB) on; And each several part all needs to connect mutually, and not only the usable floor area of PCB is big, and the components and parts on the PCB, integrated circuit quantity are more; Complex circuit, the wiring difficulty is high.
Summary of the invention
Embodiments of the invention technical matters to be solved is to provide a kind of driver module of LCD, can effectively reduce the usable floor area of PCB and the usage quantity of integrated circuit, reduces the wiring difficulty, thereby has simplified PCB, has reduced cost of manufacture.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of driver module of LCD; Comprise: power control unit and grid-driving integrated circuit; Said grid-driving integrated circuit is used to control opening line by line of image element circuit; Also comprise: at least one sequential source electrode driven integrated circuit; Said sequential source electrode driven integrated circuit is that time schedule controller is integrated into the resulting circuit of source electrode driven integrated circuit; Said sequential source electrode driven integrated circuit is used for data voltage to said image element circuit being provided, and said power control unit is connected with the sequential source electrode driven integrated circuit with said grid-driving integrated circuit respectively, is used for giving said grid-driving integrated circuit power supply according to the clock signal control power-supply system from said sequential source electrode driven integrated circuit.
Said power control unit also comprises level shifting circuit; Be used for and will convert level controling signal into from the said clock signal of said sequential source electrode driven integrated circuit, said grid-driving integrated circuit is controlled opening line by line of said image element circuit according to said level controling signal.
The driver module of described LCD also comprises connector, arrives said sequential source electrode driven integrated circuit behind the said connector of signal process from computer system.
Said signal is a low-voltage differential signal, and said low-voltage differential signal comprises three pairs of data-signals and a pair of said clock signal.
Said power control unit also is used for to said sequential source electrode driven integrated circuit power supply.
The driver module of described LCD also comprises the picture quality regulon, and said picture quality regulon is connected with said sequential source electrode driven integrated circuit with said power control unit respectively.
Said sequential source electrode driven integrated circuit also comprises the error-detecting unit, and whether the signal that is used to detect input is unusual.
The driver module of described LCD also comprises the EEPROM chip, and said EEPROM chip is connected with said sequential source electrode driven integrated circuit, is used for the signal of the said input of buffer memory.
Said sequential source electrode driven integrated circuit is fixed on and covers on the brilliant film.
The driver module of the LCD of the embodiment of the invention; Obtain the sequential source electrode driven integrated circuit through time schedule controller being integrated into source electrode driven integrated circuit; Promptly save the area and corresponding line of the shared PCB of time schedule controller, under the situation that guarantees the driver module operate as normal, simplified circuit greatly; The difficulty of the wiring that reduces has reduced the cost of manufacture of the driver module of LCD.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the synoptic diagram of the driver module of LCD in the embodiment of the invention.
Description of reference numerals:
1, grid-driving integrated circuit 2, power control unit 3, sequential source electrode driven integrated circuit 4, picture quality regulon 5, connector
Embodiment
The embodiment of the invention provides a kind of driver module of LCD, effectively reduces the usable floor area of PCB and the usage quantity of integrated circuit, has simplified PCB, has reduced cost of manufacture.
Below in conjunction with accompanying drawing the embodiment of the invention is done detailed description.
The driver module of the LCD of present embodiment; As shown in Figure 1; Comprise: power control unit 2 and grid-driving integrated circuit (Gate Driver IC) 1, grid-driving integrated circuit 1 is used to control opening line by line of image element circuit, and the driver module of the LCD of present embodiment also comprises at least one sequential source electrode driven integrated circuit 3; Wherein, the number of sequential source electrode driven integrated circuit 3 can according in the actual production to the choose reasonable that requires of resolution.
Sequential source electrode driven integrated circuit 3 in the present embodiment is that time schedule controller (TimeController) is integrated into the resulting circuit of source electrode driven integrated circuit (Source Driver IC); Therefore; Sequential source electrode driven integrated circuit 3 has the function of time schedule controller and source electrode driven integrated circuit simultaneously: make on the one hand from the signal of computer system and carry out corresponding order by the preset time table automatically; Can data voltage be provided to image element circuit on the other hand, so that the corresponding picture of liquid crystal display displays.
Power control unit 2 is connected with sequential source electrode driven integrated circuit 3 with grid-driving integrated circuit 1 respectively, is used for giving grid-driving integrated circuit 1 power supply according to the clock signal control power-supply system from sequential source electrode driven integrated circuit 3.Signal from computer system is generally low-voltage differential signal (Low Voltage Differential Signaling is called for short LVDS), and the LVDS signal comprises three pairs of data-signals and a pair of clock signal.After sequential source electrode driven integrated circuit 3 receives the clock signal in the LVDS signal; Clock signal is sent to power control unit 2; Power control unit 2 also further comprises level shifting circuit; Be used for and will convert level controling signal into from the clock signal of sequential source electrode driven integrated circuit 3, grid-driving integrated circuit 1 is opened according to level controling signal control image element circuit line by line.
The driver module of the LCD of present embodiment obtains sequential source electrode driven integrated circuit 3 through time schedule controller being integrated into source electrode driven integrated circuit; The area and corresponding line of the shared PCB of time schedule controller have promptly been saved; Under the situation that guarantees the driver module operate as normal; Simplified circuit greatly, the difficulty of the wiring that reduces has reduced the cost of manufacture of the driver module of LCD.
Further, the driver module of the LCD of present embodiment also comprises connector (Connector) 5, from the signal process connector 5 back arrival sequential source electrode driven integrated circuits 3 of computer system.The effect of connector 5 is in circuit, to be blocked between place or the isolated obstructed circuit, erects the bridge of communication, thereby makes current flowing, makes circuit realize intended function.The driver module of the LCD of present embodiment is connected with outside computer system through connector 5.In addition, power control unit 2 also can be connected with outside power-supply system through connector 5 as required.
The power control unit 2 of present embodiment also is used for to 3 power supplies of sequential source electrode driven integrated circuit.
Further, the driver module of the LCD of present embodiment also comprises picture quality regulon 4, and picture quality regulon 4 is connected with the sequential source electrode driven integrated circuit with power control unit respectively.Picture quality regulon 4 comprises common electrode driving circuit, and common electrode driving circuit is used to public electrode voltage is provided.
Further, sequential source electrode driven integrated circuit 3 also comprises the error-detecting unit, and whether the signal that is used to detect input is unusual.Comprise that with driver module three sequential source electrode driven integrated circuits 3 are example; We are set at main circuit with one of them sequential source electrode driven integrated circuit; And being designated as Master, other two are designated as Slave_1, Slave_2 respectively, when Slave_1 detects the abnormal signal of input; Send first error-detecting and output signal to Slave_2; Slave_2 judges through further detection whether the signal of input takes place unusually, and is unusual if Slave_2 judges that also the signal of input takes place, and then sends second error-detecting output signal to Master; Master sends final error-detecting more respectively and outputs signal to Slave_1, Slave_2 after receiving second error-detecting output signal.Like this, the principle of work of error-detecting unit is identical with conventional driver module, has guaranteed the compatibility of sequential source electrode driven integrated circuit 3 with driver module.
Further, the driver module of the LCD of present embodiment also comprises the EEPROM chip, and the EEPROM chip is connected with sequential source electrode driven integrated circuit 3, is used for the signal of buffer memory input.
Further, the sequential source electrode driven integrated circuit 3 of present embodiment is fixed on and covers on the brilliant film (Chip On Film is called for short COF).The COF technology is meant integrated circuit is fixed in the technology on the FPC that it uses soft additional circuit boards to make the packaged chip carrier usually, with chip and flexible base plate circuit joint.Because time schedule controller has been integrated on the sequential source electrode driven integrated circuit 3; And sequential source electrode driven integrated circuit 3 is fixed on COF and goes up the difficult static release phenomenon that produces; And the integrated circuit that is printed on the PCB very easily produces the static release phenomenon; Therefore, the driver module of the LCD of present embodiment can effectively be avoided the damage of integrated circuit, has increased the life-span of driver module.
Do further to introduce in the face of the principle of work of the driver module of the LCD of present embodiment down.
Signal from computer system arrives sequential source electrode driven integrated circuit 3 through connector 5 backs, and above-mentioned signal is generally low-voltage differential signal, and the LVDS signal comprises three pairs of data-signals and a pair of clock signal.After sequential source electrode driven integrated circuit 3 receives the clock signal in the LVDS signal; Clock signal is sent to power control unit 2; Power control unit 2 also further comprises level shifting circuit; Be used for and will convert level controling signal into from the clock signal of sequential source electrode driven integrated circuit 3, grid-driving integrated circuit 1 is opened according to level controling signal control image element circuit line by line.Sequential source electrode driven integrated circuit 3 is treated to the mini-LVDS signal with the data-signal of LVDS signal; The mini-LVDS signal is further controlled power control unit 2 and for image element circuit data voltage is provided; In addition; The common electrode driving circuit of picture quality regulon 4 is that the public electrode of image element circuit provides voltage; This shows,, realized the demonstration of the dynamic menu of LCD through the cooperating of grid-driving integrated circuit 1, sequential source electrode driven integrated circuit 3, picture quality regulon 4 and power control unit 2.
The driver module of the LCD of present embodiment obtains the sequential source electrode driven integrated circuit through time schedule controller being integrated into source electrode driven integrated circuit; The area of the shared PCB of time schedule controller and the line between corresponding and the former source electrode driven integrated circuit have promptly been saved; Under the situation that guarantees the driver module operate as normal; Simplified circuit greatly, the difficulty of the wiring that reduces has reduced the cost of manufacture of the driver module of LCD.In addition; It is identical with conventional driver module that the principle of work of the error-detecting unit of present embodiment sequential source electrode driven integrated circuit is set to; Guarantee the compatibility of sequential source electrode driven integrated circuit and driver module, improved the practicality of driver module of the LCD of present embodiment.
Through the description of above embodiment, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computing machine; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of said claim.
Claims (9)
1. the driver module of a LCD; Comprise: power control unit and grid-driving integrated circuit; Said grid-driving integrated circuit is used to control opening line by line of image element circuit; It is characterized in that; Also comprise: at least one sequential source electrode driven integrated circuit, said sequential source electrode driven integrated circuit are that time schedule controller is integrated into the resulting circuit of source electrode driven integrated circuit, and said sequential source electrode driven integrated circuit is used for data voltage to said image element circuit being provided; Said power control unit is connected with the sequential source electrode driven integrated circuit with said grid-driving integrated circuit respectively, is used for giving said grid-driving integrated circuit power supply according to the clock signal control power-supply system from said sequential source electrode driven integrated circuit.
2. the driver module of LCD according to claim 1; It is characterized in that; Said power control unit also comprises level shifting circuit; Be used for and will convert level controling signal into from the said clock signal of said sequential source electrode driven integrated circuit, said grid-driving integrated circuit is controlled opening line by line of said image element circuit according to said level controling signal.
3. the driver module of LCD according to claim 1 is characterized in that, also comprises connector, arrives said sequential source electrode driven integrated circuit behind the said connector of signal process from computer system.
4. the driver module of LCD according to claim 3 is characterized in that, said signal is a low-voltage differential signal, and said low-voltage differential signal comprises three pairs of data-signals and a pair of said clock signal.
5. the driver module of LCD according to claim 1 is characterized in that, said power control unit also is used for to said sequential source electrode driven integrated circuit power supply.
6. the driver module of LCD according to claim 1 is characterized in that, also comprises the picture quality regulon, and said picture quality regulon is connected with said sequential source electrode driven integrated circuit with said power control unit respectively.
7. the driver module of LCD according to claim 1 is characterized in that, said sequential source electrode driven integrated circuit also comprises the error-detecting unit, and whether the signal that is used to detect input is unusual.
8. the driver module of LCD according to claim 7; It is characterized in that; Also comprise the EEPROM chip, said EEPROM chip is connected with said sequential source electrode driven integrated circuit, is used for the signal of the said input of buffer memory.
9. the driver module of LCD according to claim 1 is characterized in that, said sequential source electrode driven integrated circuit is fixed on and covers on the brilliant film.
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| CN201110288358.5A CN102629457B (en) | 2011-09-26 | 2011-09-26 | Driving module of liquid crystal display |
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| CN201110288358.5A CN102629457B (en) | 2011-09-26 | 2011-09-26 | Driving module of liquid crystal display |
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| CN102629457A true CN102629457A (en) | 2012-08-08 |
| CN102629457B CN102629457B (en) | 2014-12-17 |
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| CN103700319A (en) * | 2013-12-26 | 2014-04-02 | 京东方科技集团股份有限公司 | Spliced display device |
| CN103745665A (en) * | 2014-01-13 | 2014-04-23 | 北京京东方显示技术有限公司 | Transparent display device |
| CN105590603A (en) * | 2016-02-25 | 2016-05-18 | 硅谷数模半导体（北京）有限公司 | Source electrode driver and display system |
| CN105590613A (en) * | 2016-03-25 | 2016-05-18 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN105679268A (en) * | 2016-03-29 | 2016-06-15 | 硅谷数模半导体（北京）有限公司 | Display assembly |
| CN106652858A (en) * | 2016-09-29 | 2017-05-10 | 福州大学 | Automatic detection system and method for compatibility anomaly of display |
| CN107170415A (en) * | 2017-05-10 | 2017-09-15 | 深圳市华星光电技术有限公司 | Horizontal substrate and control panel merge the LCD and its mura repairing control methods of framework |
| WO2018107649A1 (en) * | 2016-12-16 | 2018-06-21 | 惠科股份有限公司 | Display panel detection method and display panel detection apparatus |
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| CN107170415A (en) * | 2017-05-10 | 2017-09-15 | 深圳市华星光电技术有限公司 | Horizontal substrate and control panel merge the LCD and its mura repairing control methods of framework |
| CN107170415B (en) * | 2017-05-10 | 2019-09-10 | 深圳市华星光电技术有限公司 | Horizontal substrate and control panel merge the LCD panel of framework and its mura repairs control method |
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| CN102629457B (en) | 2014-12-17 |
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