CN111540330B - Liquid crystal driving circuit, liquid crystal driving method and liquid crystal display panel - Google Patents
Liquid crystal driving circuit, liquid crystal driving method and liquid crystal display panel Download PDFInfo
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- CN111540330B CN111540330B CN202010452464.1A CN202010452464A CN111540330B CN 111540330 B CN111540330 B CN 111540330B CN 202010452464 A CN202010452464 A CN 202010452464A CN 111540330 B CN111540330 B CN 111540330B
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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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Abstract
The application discloses a liquid crystal driving circuit, which comprises a time sequence control chip, a time sequence control circuit and a time sequence control circuit, wherein the time sequence control chip is used for generating a liquid crystal driving signal; the input end of the source electrode driving chip is connected with the time sequence control chip, and driving voltage is generated according to the received liquid crystal driving signal generated by the time sequence control chip; the high-resistance state channel starting module comprises gamma voltage, a fixed channel logic value is preset in the high-resistance state channel starting module, whether the channel belongs to a high-resistance state or not is judged according to a liquid crystal driving signal generated by the timing sequence control chip and received by recognition, and when the channel belongs to the high-resistance state, the channel is connected to the gamma voltage; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage.
Description
Technical Field
The present disclosure relates to the field of liquid crystal display panels, and in particular, to a liquid crystal driving circuit, a liquid crystal driving method, and a liquid crystal display panel.
Background
The liquid crystal panel needs to be driven by an ac voltage due to liquid crystal characteristics and manufacturing processes. The long-term DC voltage drives the liquid crystal, which changes the characteristics of the liquid crystal molecules and makes the residual ions inside the panel gather at the two ends of the liquid crystal molecules, thereby forming a built-in electric field. This causes polarization of liquid crystal molecules, and the polarized liquid crystal molecules display different brightness by inputting the same driving voltage, resulting in abnormal display. The voltage for driving the liquid crystal molecules is provided by a Source Driver IC (Source Driver IC), and the ac driving of the Source Driver IC is controlled by a timing control IC (TCON IC) generating a specific control signal.
However, in order to meet the requirements of various resolution panels, a source driver chip often has a compatible design for the number of output channels, and sets how many output channels need to be gated by external logic control or a command sent by a timing control chip. The unused output channel is in a high-impedance state, the output level of the corresponding output channel is unknown, the output channel is usually in a no-output state, and the voltage is 0V, please refer to fig. 1, fig. 1 is a voltage schematic diagram of the unused output channel, which may cause that the liquid crystal molecules are in a dc driving state for a long time, the liquid crystal polarization is abnormal, and the display of a partial area of the panel has brightness difference.
Therefore, there is a need to develop a new liquid crystal driving circuit to overcome the drawbacks of the prior art.
Disclosure of Invention
An object of the present invention is to provide a liquid crystal driving circuit, which can solve the problem of polarization of liquid crystal caused by the high resistance state of the output channel not used in the prior art.
In order to achieve the above object, the present invention provides a liquid crystal driving circuit, which includes a timing control chip for generating a liquid crystal driving signal; the input end of the source electrode driving chip is connected with the time sequence control chip, and driving voltage is generated according to the received liquid crystal driving signal generated by the time sequence control chip; the high-resistance state channel starting module comprises gamma voltage, a fixed channel logic value is preset in the high-resistance state channel starting module, whether the channel belongs to a high-resistance state or not is judged according to a liquid crystal driving signal generated by the timing sequence control chip and received by recognition, and when the channel belongs to the high-resistance state, the channel is connected to the gamma voltage; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage.
Further, in another embodiment, the timing control chip includes a register, the register stores a logic value of the selected channel, and the high resistance channel starting module compares the logic value of the selected channel stored in the register with a preset fixed channel logic value, so as to determine whether the channel belongs to a high resistance state.
Further, in other embodiments, the high-resistance channel starting module further includes a logic control circuit module, an input end of the logic control circuit module is connected to the register of the timing control chip, a fixed channel logic value is preset, and the logic value of the selected channel stored in the register is compared with the preset fixed channel logic value, so as to determine whether the channel belongs to the high-resistance state, and a switch control signal is obtained through operation; the input end of the switch circuit module is connected with the logic control circuit module, the gamma voltage and the driving voltage, the switch of the channel connected with the gamma voltage and the driving voltage is determined according to the switch control signal obtained by the operation of the logic control circuit module, when the switch control signal is 0, the switch circuit module enables the switch of the channel connected with the driving voltage to be in an on state, and the switch of the channel connected with the gamma voltage to be in an off state; when the switch control signal is 1, the switch circuit module enables the switch of the channel connected with the gamma voltage to be in an on state, and the switch of the channel connected with the driving voltage to be in an off state.
Further, in other embodiments, the gamma voltages are gamma7 and gamma8, and the high-impedance channel start module further includes a time control module, an output end of the time control module is connected to the switch circuit module, and the time control module controls the switch circuit module to switch between the gamma7 and the gamma 8.
Further, in other embodiments, wherein the time to switch between gamma7 and gamma8 is 1/60 seconds.
Further, in another embodiment, when the logic value of the selected channel stored in the register is N, the channel with the preset fixed channel logic value greater than N is in a high impedance state, and the channel with the logic value less than or equal to N is not in the high impedance state.
Further, in other embodiments, when the logic value of the selected channel stored in the register is N, the N +2 th to N +2M (N, M is a positive integer) channels are connected to the gamma8 voltage, and the N +1 th to N +2M-1 th channels are connected to the gamma7 voltage.
Further, in other embodiments, the driving voltage is an ac voltage.
In order to achieve the above object, the present invention further provides a liquid crystal driving method, including the steps of: generating a liquid crystal driving signal; generating a driving voltage according to the received liquid crystal driving signal generated by the time sequence control chip; judging whether a channel belongs to a high-resistance state or not according to a liquid crystal driving signal generated by the timing control chip, and connecting the channel to the gamma voltage when the channel belongs to the high-resistance state; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage.
In order to achieve the above object, the present invention further provides a liquid crystal display panel, which includes a plurality of sub-pixels, each sub-pixel corresponds to a liquid crystal, each column of sub-pixels of the liquid crystal display panel is connected to the liquid crystal driving circuit according to the present invention through a channel, and the liquid crystal rotates according to a received voltage.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a liquid crystal driving circuit, a liquid crystal driving method and a liquid crystal display panel.A high-resistance state channel starting module is arranged to judge whether a channel belongs to a high-resistance state, and when the channel belongs to the high-resistance state, the channel is connected to gamma voltage; when the channel does not belong to the high-resistance state, the channel is connected to the driving voltage, the gamma voltage is equivalent to alternating current voltage, and the phenomenon that liquid crystal polarization is abnormal when liquid crystal molecules are in a direct current driving state for a long time is avoided.
Furthermore, gamma7 and gamma8 are selected as the gamma7 and gamma8, so that the brightness of the liquid crystal is basically in a lightproof state, and a black picture with the lowest energy consumption is displayed in the corresponding area of the liquid crystal display panel, and the display picture is not influenced.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic voltage diagram of an output channel not used in a prior art LCD panel;
fig. 2 is a schematic structural diagram of a liquid crystal driving circuit according to an embodiment of the invention;
FIG. 3 is a voltage diagram of a channel providing a high resistance state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a liquid crystal driving circuit according to an embodiment of the present invention, where the liquid crystal driving circuit includes a timing control chip, a source driving chip, and a high-resistance channel start module.
The time sequence control chip generates a liquid crystal driving signal; the sequential control chip comprises a register, and the register stores the logic value of the selected channel.
And the input end of the source electrode driving chip is connected with the time sequence control chip, and generates driving voltage according to the received liquid crystal driving signal generated by the time sequence control chip. Wherein the driving voltage is an alternating voltage.
The high-resistance state channel starting module comprises gamma voltage, a logic control circuit module, a switch circuit module and a time control module.
The input end of the logic control circuit module is connected with the register of the sequential control chip, the logic control circuit module is preset with a fixed channel logic value, the logic value of the selected channel stored in the register is compared with the preset fixed channel logic value, so that whether the channel belongs to a high-resistance state or not is judged, and the switch control signal is obtained through operation.
The input end of the switch circuit module is connected with the logic control circuit module, the gamma voltage and the driving voltage, the switch of the channel connected with the gamma voltage and the driving voltage is determined according to the switch control signal obtained by the operation of the logic control circuit module, when the switch control signal is 0, the channel does not belong to a high-resistance state, the switch circuit module enables the switch of the channel connected with the driving voltage to be in an on state, and the switch of the channel connected with the gamma voltage is in an off state; when the switch control signal is 1, the channel belongs to a high-resistance state, the switch circuit module enables the switch of the channel connected with the gamma voltage to be in an on state, and the switch of the channel connected with the driving voltage is in an off state.
When the logic value of the selected channel stored in the register is N, the channel with the logic value of the fixed channel preset by the logic control circuit module and larger than N is in a high-impedance state, and at the moment, the switch control signal is 0; and the channel with the fixed channel logic value less than or equal to N preset by the logic control circuit module is not in a high-impedance state, and the switch control signal is 1 at the moment.
Referring to table 1, table 1 is a table of a relationship between the logic value SEL of the selected channel stored in the register, the logic value EN of the fixed channel preset by the logic control circuit module, and the switch control signal.
TABLE 1
The gamma voltage selects gamma7 and gamma8, wherein when the logic value of the selected channel stored by the register is N, the channels from the N +2 th to the N +2M (N, M is a positive integer) are connected with the gamma8 voltage, and the channels from the N +1 th to the N +2M-1 th are connected with the gamma7 voltage.
And the output end of the time control module is connected with the switch circuit module, and the time control module controls the switch circuit module to switch between the gamma7 and the gamma8, wherein the time for switching between the gamma7 and the gamma8 is 1/60 seconds.
Referring to fig. 3, fig. 3 is a schematic voltage diagram of a channel providing a high resistance state according to an embodiment of the present invention, in which voltages of gamma7 and gamma8 are regularly switched to be equivalent to an ac voltage, so as to avoid the occurrence of abnormal liquid crystal polarization when liquid crystal molecules are in a dc driving state for a long time.
The gamma voltages are gamma7 and gamma8, because the gamma7 and gamma8 make the brightness of the liquid crystal basically in a lightproof state, the black picture with the lowest energy consumption is displayed in the corresponding area of the liquid crystal display panel, and the display picture is not influenced.
The embodiment of the invention also provides a liquid crystal driving method which comprises the steps 1-3.
Step 1: a liquid crystal drive signal is generated.
Step 2: and generating a driving voltage according to the received liquid crystal driving signal generated by the time sequence control chip.
And step 3: judging whether a channel belongs to a high-resistance state or not according to a liquid crystal driving signal generated by the timing control chip, and connecting the channel to the gamma voltage when the channel belongs to the high-resistance state; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage.
The embodiment of the invention also provides a liquid crystal display panel, which comprises a plurality of sub-pixels, each sub-pixel corresponds to a liquid crystal, each column of sub-pixels of the liquid crystal display panel is connected with the liquid crystal driving circuit related by the invention through a channel, and the liquid crystal rotates according to the received voltage. Referring to fig. 4, fig. 4 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention.
The invention has the beneficial effects that: the invention provides a liquid crystal driving circuit, a liquid crystal driving method and a liquid crystal display panel.A high-resistance state channel starting module is arranged to judge whether a channel belongs to a high-resistance state, and when the channel belongs to the high-resistance state, the channel is connected to gamma voltage; when the channel does not belong to the high-resistance state, the channel is connected to the driving voltage, the gamma voltage is equivalent to alternating current voltage, and the phenomenon that liquid crystal polarization is abnormal when liquid crystal molecules are in a direct current driving state for a long time is avoided.
Furthermore, gamma7 and gamma8 are selected as the gamma7 and gamma8, so that the brightness of the liquid crystal is basically in a lightproof state, and a black picture with the lowest energy consumption is displayed in the corresponding area of the liquid crystal display panel, and the display picture is not influenced.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The liquid crystal driving circuit, the liquid crystal driving method, and the liquid crystal display panel provided in the embodiments of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation manner of the present application, and the description of the above embodiments is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (6)
1. A liquid crystal driving circuit, comprising
The time sequence control chip generates a liquid crystal driving signal;
the input end of the source electrode driving chip is connected with the time sequence control chip, and driving voltage is generated according to the received liquid crystal driving signal generated by the time sequence control chip;
the high-resistance state channel starting module comprises gamma voltage, a fixed channel logic value is preset in the high-resistance state channel starting module, whether the channel belongs to a high-resistance state or not is judged according to a liquid crystal driving signal generated by the timing sequence control chip and received by recognition, and when the channel belongs to the high-resistance state, the channel is connected to the gamma voltage; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage; wherein the gamma voltage is gamma7 and gamma 8;
the time sequence control chip comprises a register, the register stores the logic value of the selected channel, and the high-resistance state channel starting module compares the logic value of the selected channel stored by the register with a preset fixed channel logic value so as to judge whether the channel belongs to a high-resistance state;
the high-resistance state channel starting module also comprises
The input end of the logic control circuit module is connected with the register of the time sequence control chip, a fixed channel logic value is preset, the logic value of the selected channel stored by the register is compared with the preset fixed channel logic value, so that whether the channel belongs to a high-resistance state is judged, and a switch control signal is obtained through operation;
the input end of the switch circuit module is connected with the logic control circuit module, the gamma voltage and the driving voltage, the switch of the channel connected with the gamma voltage and the driving voltage is determined according to the switch control signal obtained by the operation of the logic control circuit module, when the switch control signal is 0, the switch circuit module enables the switch of the channel connected with the driving voltage to be in an on state, and the switch of the channel connected with the gamma voltage to be in an off state; when the switch control signal is 1, the switch circuit module enables the switch of the channel connected with the gamma voltage to be in an on state, and the switch of the channel connected with the driving voltage to be in an off state;
and the output end of the time control module is connected with the switch circuit module, the time control module controls the switch circuit module to switch between the gamma7 and the gamma8, and the time for switching between the gamma7 and the gamma8 is 1/60 seconds.
2. The liquid crystal driving circuit according to claim 1, wherein when the logic value of the selected channel stored in the register is N, the channel with the logic value greater than N preset by the logic control circuit module is in a high impedance state, and the channel with the logic value less than or equal to N is not in the high impedance state.
3. The liquid crystal driving circuit according to claim 2, wherein when the logic value of the selected channel stored in the register is N, the N +2 to N +2M channels are connected to the gamma8 voltage, and the N +1 to N +2M "1 channels are connected to the gamma7 voltage.
4. The liquid crystal driving circuit according to claim 1, wherein the driving voltage is an alternating current voltage.
5. A liquid crystal driving method, comprising the steps of:
generating a liquid crystal driving signal;
generating a driving voltage according to a received liquid crystal driving signal generated by the time sequence control chip;
judging whether a channel belongs to a high-resistance state or not according to a liquid crystal driving signal generated by the timing control chip, and connecting the channel to gamma voltage when the channel belongs to the high-resistance state; the gamma voltage selects gamma7 and gamma8, and is switched between gamma7 and gamma8, and the switching time between gamma7 and gamma8 is 1/60 seconds; when the channel does not belong to the high-resistance state, connecting the channel to the driving voltage.
6. A liquid crystal display panel comprising a plurality of sub-pixels, each of the sub-pixels corresponding to a liquid crystal, each column of sub-pixels of the liquid crystal display panel being connected to the liquid crystal driving circuit according to any one of claims 1 to 4 through a channel, the liquid crystal being rotated according to a received voltage.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885395A (en) * | 2006-05-25 | 2006-12-27 | 广辉电子股份有限公司 | Display capable of adjusting drive circuit in accordance with resolution and drive method thereof |
| CN102034439A (en) * | 2009-09-28 | 2011-04-27 | 北京京东方光电科技有限公司 | Liquid crystal display driving device |
| CN108694922A (en) * | 2018-04-03 | 2018-10-23 | 昆山龙腾光电有限公司 | Common voltage driving method, device and display device |
| CN109830204A (en) * | 2019-03-25 | 2019-05-31 | 京东方科技集团股份有限公司 | A kind of sequence controller, display driving method, display device |
| CN111009209A (en) * | 2019-12-27 | 2020-04-14 | 厦门天马微电子有限公司 | Display panel, driving method thereof and display device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0879663A (en) * | 1994-09-07 | 1996-03-22 | Sharp Corp | Drive circuit and display device |
| US7492343B2 (en) * | 2003-12-11 | 2009-02-17 | Lg Display Co., Ltd. | Liquid crystal display device |
| WO2009031391A1 (en) * | 2007-09-07 | 2009-03-12 | Sharp Kabushiki Kaisha | Method for driving liquid crystal display device and liquid crystal display device |
| US9508297B2 (en) * | 2012-05-10 | 2016-11-29 | Sharp Kabushiki Kaisha | Liquid-crystal-driving method and liquid crystal display device |
| US8836630B2 (en) * | 2013-01-11 | 2014-09-16 | Himax Technologies Limited | Source driver and display device |
| CN105355177B (en) * | 2015-12-02 | 2018-07-03 | 深圳市华星光电技术有限公司 | Liquid crystal display and the method for improving its ghost phenomena |
| CN106710558A (en) * | 2017-02-28 | 2017-05-24 | 深圳市华星光电技术有限公司 | Driving circuit and liquid crystal display device |
| CN110969979B (en) * | 2019-12-25 | 2021-09-03 | Tcl华星光电技术有限公司 | Driving circuit and driving method of display panel |
-
2020
- 2020-05-26 CN CN202010452464.1A patent/CN111540330B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885395A (en) * | 2006-05-25 | 2006-12-27 | 广辉电子股份有限公司 | Display capable of adjusting drive circuit in accordance with resolution and drive method thereof |
| CN102034439A (en) * | 2009-09-28 | 2011-04-27 | 北京京东方光电科技有限公司 | Liquid crystal display driving device |
| CN108694922A (en) * | 2018-04-03 | 2018-10-23 | 昆山龙腾光电有限公司 | Common voltage driving method, device and display device |
| CN109830204A (en) * | 2019-03-25 | 2019-05-31 | 京东方科技集团股份有限公司 | A kind of sequence controller, display driving method, display device |
| CN111009209A (en) * | 2019-12-27 | 2020-04-14 | 厦门天马微电子有限公司 | Display panel, driving method thereof and display device |
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