CN202084281U - Driving device for liquid crystal display and liquid crystal display device - Google Patents
Driving device for liquid crystal display and liquid crystal display device Download PDFInfo
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- CN202084281U CN202084281U CN2011202030446U CN201120203044U CN202084281U CN 202084281 U CN202084281 U CN 202084281U CN 2011202030446 U CN2011202030446 U CN 2011202030446U CN 201120203044 U CN201120203044 U CN 201120203044U CN 202084281 U CN202084281 U CN 202084281U
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Abstract
The utility model discloses a driving device for a liquid crystal display and a liquid crystal display device, wherein the driving device comprises a substrate, a flexible circuit board and a printed circuit board and is used for further decreasing the number of chips employed by a driving circuit, reducing cost and simplifying the liquid crystal display device to a greater extent.
Description
Technical field
The utility model relates to liquid crystal and manufactures the field, relates in particular to a kind of drive unit and liquid crystal indicator of LCD.
Background technology
LCD (LCD) generally comprises display panels, turntable driving (Gate Driver) circuit and data-driven (Source Driver) circuit.Wherein, display panels comprises color membrane substrates, array base palte and is clipped in two liquid crystal layers between the substrate, the integrated electrical chip of turntable driving integrated chip and data-driven respectively with array base palte on thin film transistor (TFT) (Thin Film Transistor TFT) links to each other.As shown in Figure 1, structural representation for existing TFT-LCD array base palte, comprise underlay substrate 101, and on underlay substrate 101 with the pixel electrode 102 of array format, be arranged on data line 103 and sweep trace 104 between pixel electrode 102 ranks, wherein, data line 103 links to each other with data-driven integrated chip 105, sweep trace 104 links to each other with turntable driving integrated chip 106, article one, data line 103 correspondences are controlled the pixel electrodes (for example pixel electrode of red sub-pixel correspondence) of the sub-pix correspondence of same type in the row pixel electrodes 102, sweep trace 104 corresponding control one-row pixels electrodes 102.
At present, in order to reduce the number of the chip that driving circuit adopts to a certain extent, can directly scan drive circuit directly be integrated on the substrate, thereby need not to be provided with the printed circuit board (PCB) of turntable driving integrated circuit respectively, to reduce cost to a certain extent.
For the further number that reduces the chip of driving circuit employing, reduce cost, to go up largely and simplify liquid crystal indicator, the utility model provides a kind of drive unit of LCD.
The utility model content
The utility model provides a kind of drive unit of LCD, and the number of the chip that adopts in order to further minimizing driving circuit reduces cost, and goes up largely and simplifies liquid crystal indicator.
The concrete technical scheme that the utility model provides is as follows:
A kind of drive unit of LCD comprises:
Substrate (201) is integrated with the scan drive circuit (204) that connects sweep trace, every corresponding pixel electrode of controlling the sub-pix correspondence of same type in the one-row pixels electrode of sweep trace;
Flexible PCB (202) is provided with data-driven integrated chip (205), includes the data drive circuit (2051) that is connected with data line in the described data-driven integrated chip (205), the corresponding control of data line one a row pixel electrode;
Printed circuit board (PCB) (203), be provided with Low Voltage Differential Signal interface (206) and power supply integrated chip (207), described power supply integrated chip (207) will be exported to scan drive circuit (204) and data drive circuit (2051) after will changing based on the supply voltage that Low Voltage Differential Signal interface (206) obtains.
A kind of liquid crystal indicator comprises above-mentioned drive unit.
Based on technique scheme, in the present embodiment, scan drive circuit by the sweep trace that is integrated and connected on the substrate, thereby directly be produced on scan drive circuit on the substrate, and need not to be provided with special turntable driving integrated chip, and saved the barbola work (bonding technology) of TFT grid direction, thereby saved cost and saved the space, and every corresponding pixel electrode of controlling the sub-pix correspondence of same type in the one-row pixels electrode of sweep trace in the scan drive circuit, be arranged in the data-driven integrated chip on the flexible PCB and include the data drive circuit that is connected with data line, article one, the data line correspondence is controlled a row pixel electrode, thereby make when driving a pixel, only need a data line to get final product, thereby data line is reduced to original 1/3, reduced the number that connects the chip of data line in a large number, saved cost, and reduced the area of circuit board, simplified the drive unit of LCD to a great extent, for the slimming of LCD development provides may.Simultaneously, in the present embodiment, Low Voltage Differential Signal interface and power IC are integrated on the PCB, have further reduced the area of the PCB that drive unit takies in the LCD.
Description of drawings
Fig. 1 is the structural representation of existing TFT-LCD array base palte;
Fig. 2 is a LCD driving mechanism structural representation in the present embodiment;
Fig. 3 is the connection diagram of sweep trace, data line and pixel electrode in the present embodiment.
Embodiment
In order further to reduce the number of the chip that driving circuit adopts in the LCD, reduce cost, go up largely and simplify liquid crystal indicator, make liquid crystal indicator develop to slimming, the utility model provides a kind of drive unit of LCD.
Below in conjunction with accompanying drawing preferred embodiment provided by the utility model is elaborated.
As shown in Figure 2, in the present embodiment, the drive unit of LCD mainly comprises substrate 201, flexible PCB (Film) 202 and printed circuit board (PCB) (PCB) 203, wherein,
Substrate 201 is integrated with the scan drive circuit 204 that connects sweep trace, every corresponding pixel electrode of controlling the sub-pix correspondence of same type in the one-row pixels electrode of sweep trace;
Flexible PCB 202 is provided with data-driven integrated chip 205, includes the corresponding control of 2051, one data lines of the data drive circuit one row pixel electrode that is connected with data line in this data-driven integrated chip 205;
Printed circuit board (PCB) 203, be provided with Low Voltage Differential Signal interface 206 and power supply integrated chip 207, described power supply integrated chip 207 will be exported to scan drive circuit 204 and data drive circuit 2051 after will changing based on the supply voltage that Low Voltage Differential Signal interface 206 obtains.
Wherein, the annexation of scan drive circuit 204 and data drive circuit 2051 and pixel electrode as shown in Figure 3, every sweep trace 301 corresponding pixel electrodes of controlling the sub-pix correspondence of same type in the one-row pixels electrodes, for example, the pixel electrode of all red sub-pixel 303 correspondences in the control delegation, perhaps control the pixel electrode of green sub-pix 304 correspondences all in the delegation, or be the pixel electrode of controlling blue sub-pix 305 correspondences all in the delegation.And every data line 302 corresponding control one row pixel electrodes, just a data line connects and belongs to all pixel electrodes of same pixel (pixel electrodes of three sub-pix correspondences of red, green, blue).When driving, corresponding three sweep traces of pixel and a data line, and in the existing driving method, driving a pixel needs a sweep trace and three data lines, the driving method that provides by present embodiment is reduced to original 1/3 with the bar number of data line.
Preferably, also be integrated with sequential control circuit 2052 on the data-driven integrated chip 205, connect scan drive circuit 204 and data drive circuit 2051, for data line and sweep trace provide timing control signal.
Wherein, power supply integrated chip 207 connects sequential control circuit 2052, so that voltage to be provided.
Preferably, be integrated with Gamma resistance 208 on the printed circuit board (PCB) 203, connect power supply integrated chip 207, connect data drive circuit 2051 simultaneously to obtain voltage.
In the present embodiment, be integrated with electric pressure converter (DC-DC) in the power supply integrated chip 207, obtaining to carry out voltage transitions behind the supply voltage based on Low Voltage Differential Signal interface 206, and the voltage after will changing is exported to scan drive circuit 204 and data-driven road 2051.
Preferably, power IC 207 also is integrated with level translator (Level Shifter), and the voltage after electric pressure converter (DC-DC) conversion is exported to scan drive circuit 204 after Level Shifter changes.
Preferably, power supply integrated chip 207 also is integrated with the driving circuit that drives module backlight, connects electric pressure converter and module backlight.
In the present embodiment, also disclose a kind of liquid crystal indicator, comprised above-mentioned drive unit.
Based on technique scheme, in the present embodiment, by integrated scanning driving circuit on the substrate, thereby directly be produced on scan drive circuit on the substrate, and need not to be provided with special turntable driving integrated chip, and saved the barbola work (bonding technology) of TFT grid direction, thereby saved cost and saved the space, and every corresponding pixel electrode of controlling the sub-pix correspondence of same type in the one-row pixels electrode of sweep trace in the scan drive circuit, be arranged in the data-driven integrated circuit on the flexible PCB, article one, the data line correspondence is controlled a row pixel electrode, thereby make when driving a pixel, only need a data line to get final product, thereby be original 1/3, reduced the number that connects the data-driven integrated chip of data line in a large number the decreased number of data line, saved cost, and reduced the area of circuit board, simplified the drive unit of LCD to a great extent, for the slimming development of LCD provides may.Simultaneously, in the present embodiment, Low Voltage Differential Signal interface and power supply integrated chip are integrated on the PCB, have further reduced the area of the PCB that drive unit takies in the LCD.
Further, in the present embodiment, sequential control circuit can also be integrated in the data-driven integrated chip, reduce the area of the PCB that drive unit takies in the LCD to a greater extent.
And, in the present embodiment, also by Gamma resistance integrated circuit is integrated on the PCB, and the driving circuit that will drive module backlight is integrated in the power supply integrated chip, further reduced the area of the PCB that drive unit takies in the LCD, more help simplifying LCD, more help realizing the slimming of LCD.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. the drive unit of a LCD is characterized in that, comprising:
Substrate is integrated with the scan drive circuit that connects sweep trace, every corresponding pixel electrode of controlling the sub-pix correspondence of same type in the one-row pixels electrode of sweep trace;
Flexible PCB is provided with the data-driven integrated chip, includes the data drive circuit that is connected with data line in the described data-driven integrated chip, the corresponding control of data line one a row pixel electrode;
Printed circuit board (PCB) is provided with Low Voltage Differential Signal interface and power supply integrated chip, and described power supply integrated chip will be exported to scan drive circuit and data drive circuit after will changing based on the supply voltage that the Low Voltage Differential Signal interface obtains.
2. drive unit as claimed in claim 1 is characterized in that, further is integrated with sequential control circuit in the described data-driven integrated chip, connects described scan drive circuit and data drive circuit, for data line and sweep trace provide timing control signal.
3. drive unit as claimed in claim 2 is characterized in that, described power supply integrated chip connects described sequential control circuit, so that voltage to be provided.
4. drive unit as claimed in claim 3 is characterized in that, is integrated with Gamma resistance on the described printed circuit board (PCB), connects described power supply integrated chip to obtain voltage, connects described data drive circuit simultaneously.
5. drive unit as claimed in claim 1, it is characterized in that, described power supply integrated chip is integrated with electric pressure converter, obtaining to carry out voltage transitions behind the supply voltage based on the Low Voltage Differential Signal interface, and the voltage after will changing is exported to scan drive circuit and data drive circuit.
6. drive unit as claimed in claim 5 is characterized in that, described power supply integrated chip also is integrated with level translator, and the voltage after the described electric pressure converter conversion is exported to described scan drive circuit after described level translator is changed.
7. drive unit as claimed in claim 5 is characterized in that, described power supply integrated chip also is integrated with the driving circuit that drives module backlight, connects described electric pressure converter and module backlight.
8. a liquid crystal indicator is characterized in that, comprises each described drive unit as claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202030446U CN202084281U (en) | 2011-06-16 | 2011-06-16 | Driving device for liquid crystal display and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202030446U CN202084281U (en) | 2011-06-16 | 2011-06-16 | Driving device for liquid crystal display and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN202084281U true CN202084281U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202030446U Expired - Lifetime CN202084281U (en) | 2011-06-16 | 2011-06-16 | Driving device for liquid crystal display and liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657915A (en) * | 2016-07-25 | 2018-02-02 | 三星电子株式会社 | Printed circuit board (PCB) and related semiconductor device including drive circuit |
| CN107799072A (en) * | 2016-09-07 | 2018-03-13 | 达意科技股份有限公司 | Electric paper display device |
| 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 |
| WO2018209755A1 (en) * | 2017-05-19 | 2018-11-22 | 深圳市华星光电技术有限公司 | Display panel, and display device |
| WO2020047990A1 (en) * | 2018-09-03 | 2020-03-12 | 重庆惠科金渝光电科技有限公司 | Display module and display device |
| WO2020082467A1 (en) * | 2018-10-22 | 2020-04-30 | 深圳市华星光电半导体显示技术有限公司 | Display device |
-
2011
- 2011-06-16 CN CN2011202030446U patent/CN202084281U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657915A (en) * | 2016-07-25 | 2018-02-02 | 三星电子株式会社 | Printed circuit board (PCB) and related semiconductor device including drive circuit |
| CN107799072A (en) * | 2016-09-07 | 2018-03-13 | 达意科技股份有限公司 | Electric paper display device |
| CN107799072B (en) * | 2016-09-07 | 2020-08-11 | 元太科技工业股份有限公司 | Electronic paper display device |
| 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 |
| US10733923B2 (en) | 2016-12-16 | 2020-08-04 | HKC Corporation Limited | Display panel test detection method and device for storing a picture for detection in a source driver circuit board |
| WO2018209755A1 (en) * | 2017-05-19 | 2018-11-22 | 深圳市华星光电技术有限公司 | Display panel, and display device |
| WO2020047990A1 (en) * | 2018-09-03 | 2020-03-12 | 重庆惠科金渝光电科技有限公司 | Display module and display device |
| WO2020082467A1 (en) * | 2018-10-22 | 2020-04-30 | 深圳市华星光电半导体显示技术有限公司 | Display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150623 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150623 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |