CN105374336A - Liquid crystal display device and grid signal compensation method - Google Patents
Liquid crystal display device and grid signal compensation method Download PDFInfo
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- CN105374336A CN105374336A CN201510940409.6A CN201510940409A CN105374336A CN 105374336 A CN105374336 A CN 105374336A CN 201510940409 A CN201510940409 A CN 201510940409A CN 105374336 A CN105374336 A CN 105374336A
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- signal
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- grey decision
- module
- penalty coefficient
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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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a liquid crystal display device, comprising a panel, a grid driving module and a control module; the control module comprises a driving module, a data processing module and a correction circuit; the data processing module comprises a first lockup table, a second lookup table and a compensation module; the first lookup table comprises a plurality of first compensation coefficients corresponding to a plurality of display areas; the second lookup table comprises a plurality of second compensation coefficients corresponding to a plurality of gray scale values of an original grid signal; the compensation module is used for performing compensation on the corrected grid signal according to the corresponding the plurality of first compensation coefficients and the plurality of the second compensation coefficients to generate compensation grid signals.
Description
[technical field]
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of liquid crystal display and signal compensation method.
[background technology]
Liquid crystal indicator obtains develop rapidly because little, lightweight, the low in energy consumption and display quality of its volume is excellent.Along with the development of economic technology, the raising of people's quality of life, the requirement of people to liquid crystal indicator is also more and more higher, large scale, high resolving power, ultra-narrow frame, and ultra-thin grade is paid attention to by manufacturer.
Along with the change of liquid crystal indicator size is large, narrowing of frame, signal line on liquid crystal indicator will become more and more thinner, its impedance also can become more and more large, the increase of signal line impedence will the uniformity coefficient of effect diagram picture, some bad problems will there will be, and as Hblock (horizontal block), have a strong impact on the quality of liquid crystal indicator.
With reference to figure 1, the display schematic diagram of the liquid crystal display 10 of prior art.This liquid crystal display 10 comprises panel 11 and multiple grid drive chip 12.Described panel 11 comprises three viewing areas 13; each viewing area is driven by a grid drive chip 12 respectively; but; in prior art; because the signal line on liquid crystal panel glass has impedance; therefore, described panel 11 often there will be horizontal block phenomenon as shown in Figure 1 at low grey decision-making.The feature of this phenomenon is the viewing area 13 meeting slightly difference that each grid drive chip 12 controls.Therefore, viewing area 13 intersection controlled two adjacent grid drive chip 12 visually has a boundary line.Therefore, the uniformity degree of image of liquid crystal indicator becomes problem demanding prompt solution.
Therefore, need to propose liquid crystal display and signal compensation method, to overcome the problems referred to above.
[summary of the invention]
An object of the present invention is to provide a kind of liquid crystal display.
For achieving the above object, the invention provides a kind of liquid crystal display, comprise panel, grid electrode drive module and control module.
Described panel comprises multiple viewing area.Described grid electrode drive module comprises multiple grid drive chip, and described multiple grid drive chip is connected to described multiple viewing area respectively.Described control module connects described grid electrode drive module, and described control module comprises module of overdriving, data processing module and correcting circuit.
Described correcting circuit corrects signal for receiving original gate signal and producing.Described data processing module compensates signal for receiving described correction signal and producing.Described module of overdriving is for receiving described compensation signal and exporting described multiple grid drive chip to.
Described data processing module comprises the first look-up table, second look-up table and compensating module, described first look-up table comprises multiple first penalty coefficients corresponding to described multiple viewing area, described second look-up table comprises multiple second penalty coefficients corresponding to multiple grey decision-making of described original gate signal, described compensating module is used for compensating described correction signal according to described multiple first penalty coefficient of correspondence and described multiple second penalty coefficient, to produce described compensation signal.
In a preferred embodiment, described multiple grey decision-making is divided into many group grey decision-making scopes, and described multiple second penalty coefficient is with the corresponding described many group grey decision-making scopes of multiple fixed value.
In a preferred embodiment, multiple grey decision-making of described original gate signal and described multiple second penalty coefficient are exponentially or the relation of logarithm.
In a preferred embodiment, multiple grey decision-making that multiple grey decision-making of described compensation signal equal described original gate signal are distinctly multiplied by described multiple first penalty coefficient and described multiple second penalty coefficient.
In a preferred embodiment, described correcting circuit is gamma-correction circuit.
An object of the present invention is to provide a kind of signal compensation method, especially for a kind of liquid crystal display.
For achieving the above object, the invention provides a kind of signal compensation method, especially for a kind of liquid crystal display, described liquid crystal display comprises control module, described control module comprises correcting circuit and data processing module, and described data processing module comprises compensating module, and described signal compensation method comprises: first, receive original gate signal by described correcting circuit to be corrected, and produce correction signal; Then, correction signal is received by described data processing module; Then, compensate to produce compensation signal to described correction signal by described compensating module.Described compensating module also comprises the first look-up table and second look-up table.Described first look-up table comprises multiple first penalty coefficients corresponding to described multiple viewing area, described second look-up table comprises multiple second penalty coefficients corresponding to multiple grey decision-making of described original gate signal, and described compensating module is used for compensating described correction signal according to described multiple first penalty coefficient of correspondence and described multiple second penalty coefficient.
In a preferred embodiment, described multiple grey decision-making is divided into many group grey decision-making scopes, and described multiple second penalty coefficient is with the corresponding described many group grey decision-making scopes of multiple fixed value.。
In a preferred embodiment, multiple grey decision-making of described original gate signal and described multiple second penalty coefficient are exponentially or the relation of logarithm.
In a preferred embodiment, multiple grey decision-making that multiple grey decision-making of described compensation signal equal individually described original gate signal are multiplied by individually described multiple first penalty coefficient and described multiple second penalty coefficient.
In a preferred embodiment, described correcting circuit is corrected described original gate signal by gamma correction mode.
Compared to prior art, the present invention by adding novel data processing module in existing image processing circuit, except different provide except one group of penalty coefficient to horizontal block, also carry other one group of penalty coefficient altogether for different grey decision-making, and then the horizontal block problem that the image solving liquid crystal display occurs.
[accompanying drawing explanation]
Fig. 1, the display schematic diagram of the liquid crystal display of prior art;
Fig. 2, the Organization Chart of liquid crystal display of the present invention;
Fig. 3, illustrates the thin portion Organization Chart of the control module of Fig. 2;
Fig. 4, illustrates the first schematic diagram of first look-up table of Fig. 3;
Fig. 5, illustrates the second schematic diagram of first look-up table of Fig. 3;
Fig. 6, illustrates the first schematic diagram of the second look-up table of Fig. 3;
Fig. 7, illustrates the second schematic diagram of the second look-up table of Fig. 3;
Fig. 8, illustrates the process flow diagram of signal compensation method of the present invention.
[embodiment]
The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.The direction term that the present invention mentions, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings.Therefore, the direction term of use is in order to illustrate and to understand the present invention, and is not used to limit the present invention.
With reference to figure 2 and Fig. 3.Fig. 2, the Organization Chart of liquid crystal display 100 of the present invention.Fig. 3, illustrates the thin portion Organization Chart of the control module 110 of Fig. 2.Described liquid crystal display 100 comprises panel 130, grid electrode drive module 120 and control module 110.Described panel 130 comprises multiple viewing area 131.Described grid electrode drive module 120 comprises multiple grid drive chip 121, and described multiple grid drive chip 121 is connected to described multiple viewing area 131 respectively.Described control module 110 connects described grid electrode drive module 120, and described control module comprises (overdrive) module 111 of overdriving, data processing (dataprocessing) module 112, correcting circuit 113, locking data (datalatch) module 114, data mapping (datamapping) module 115 and little low-voltage differential signal and launches (miniLVDStransmitter) device 116.Preferably, described correcting circuit 113 is gamma (gamma) correcting circuits.
Described correcting circuit 111 corrects signal 150 for receiving original gate signal 160 and producing.Described data processing module 112 compensates signal 140 for receiving described correction signal 150 and producing.Described module 113 of overdriving is for receiving described compensation signal 140 and exporting described multiple grid drive chip 121 to.
Described data processing module 112 comprises the first look-up table 1121, second look-up table 1122 and compensating module 1123, described first look-up table 1121 comprises the multiple first penalty coefficient α corresponding to described multiple viewing area 131, described second look-up table 1122 comprises the multiple second penalty coefficient β corresponding to multiple grey decision-making of described original gate signal 160, described compensating module 1123 is for compensating described correction signal 150 according to described multiple first penalty coefficient α of correspondence and described multiple second penalty coefficient β, to produce described compensation signal 140.
With reference to figure 4 and Fig. 5.Fig. 4, illustrates the first key diagram of first look-up table 1121 of Fig. 3.Fig. 5, illustrates the second key diagram of first look-up table 1121 of Fig. 3.Clearly state the n relation exponentially of described multiple first penalty coefficient α and described multiple viewing area 131 (by upper or be divided into n viewing area by down).When n is larger, more the viewing area 131 of below can produce larger signal impedance, and therefore described multiple first penalty coefficient α can be larger.In other preferred embodiments, the n of described multiple first penalty coefficient α and described multiple viewing area 131 also can be logarithmic relationship.In Figure 5, for example, when n is 7, each viewing area 131 has a described multiple first penalty coefficient α (in b1-b7).
With reference to figure 6, illustrate the first schematic diagram of the second look-up table 1122 of Fig. 3.The multiple grey decision-making clearly stating described multiple second penalty coefficient β and described original gate signal 160 are the relation of logarithm.Specify known, when grey decision-making reaches 255 (maximum brightness), described multiple second penalty coefficient β is 0, in other words, without any need for compensation; Otherwise when grey decision-making gets over hour (brightness is lower), described multiple second penalty coefficient β can be larger.In other preferred embodiments, the grey decision-making of described multiple second penalty coefficient β and described original gate signal 160 also can exponentially relation.
Fig. 7, illustrates the second schematic diagram of the second look-up table of Fig. 3.The difference of Fig. 7 and Fig. 6 is, described multiple second penalty coefficient β of Fig. 7 and multiple grey decision-making of described original gate signal 160 are not present logarithmic relationship.In this schematic diagram, grey decision-making is a1 from described multiple second penalty coefficient β of 0-31, and grey decision-making is a2 from described multiple second penalty coefficient β of 32-64, and all the other please refer to diagram, repeat no more.In other words, described multiple second penalty coefficient β only just can change when grey decision-making equals the multiple of 32.In other preferred embodiments, just change when described multiple second penalty coefficient β also can be the multiple of other numeral.
Fig. 8, illustrates the process flow diagram of signal compensation method of the present invention.About component numerals, please refer to Fig. 2-Fig. 3, do not repeat at this.First, perform step S01, receive original gate signal 160 by described correcting circuit 111 and corrected, and produce correction signal 150; Then, perform step S02, received by described data processing module 112 and correct signal 150; Then, perform step S03, compensate to produce compensation signal 140 to described correction signal 150 by described compensating module 1123.
Preferably, described correcting circuit 11 is corrected described original gate signal 160 by gamma correction mode.
In sum; although the present invention discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various change and retouching, the scope that therefore protection scope of the present invention defines with claim is as the criterion.
Claims (10)
1. a liquid crystal display, comprises:
Panel, comprises multiple viewing area;
Grid electrode drive module, comprises multiple grid drive chip, and described multiple grid drive chip is connected to described multiple viewing area respectively; And
Control module, connects described grid electrode drive module, and described control module comprises:
Correcting circuit, corrects signal for receiving original gate signal and producing;
Data processing module, compensates signal for receiving described correction signal and producing; And
To overdrive module, for receiving described compensation signal and exporting described multiple grid drive chip to;
It is characterized in that, described data processing module comprises the first look-up table, second look-up table and compensating module, described first look-up table comprises multiple first penalty coefficients corresponding to described multiple viewing area, described second look-up table comprises multiple second penalty coefficients corresponding to multiple grey decision-making of described original gate signal, described compensating module is used for compensating described correction signal according to described multiple first penalty coefficient of correspondence and described multiple second penalty coefficient, to produce described compensation signal.
2. liquid crystal display as claimed in claim 1, is characterized in that, described multiple grey decision-making is divided into many group grey decision-making scopes, and described multiple second penalty coefficient is with the corresponding described many group grey decision-making scopes of multiple fixed value.
3. liquid crystal display as claimed in claim 1, is characterized in that, multiple grey decision-making of described original gate signal and described multiple second penalty coefficient are exponentially or the relation of logarithm.
4. liquid crystal display as claimed in claim 1, is characterized in that, multiple grey decision-making that multiple grey decision-making of described compensation signal equal described original gate signal are multiplied by individually described multiple first penalty coefficient and described multiple second penalty coefficient.
5. liquid crystal display as claimed in claim 1, it is characterized in that, described correcting circuit is gamma-correction circuit.
6. a signal compensation method, especially for a kind of liquid crystal display, described liquid crystal display comprises control module, and described control module comprises correcting circuit and data processing module, described data processing module comprises compensating module, and described signal compensation method comprises:
Receive original gate signal by described correcting circuit to be corrected, and produce correction signal;
Received by described data processing module and correct signal;
Compensate to produce compensation signal to described correction signal by described compensating module;
It is characterized in that, described compensating module also comprises the first look-up table and second look-up table, described first look-up table comprises multiple first penalty coefficients corresponding to described multiple viewing area, described second look-up table comprises multiple second penalty coefficients corresponding to multiple grey decision-making of described original gate signal, and described compensating module is used for compensating described correction signal according to described multiple first penalty coefficient of correspondence and described multiple second penalty coefficient.
7. signal compensation method as claimed in claim 6, is characterized in that, described multiple grey decision-making is divided into many group grey decision-making scopes, and described multiple second penalty coefficient is with the corresponding described many group grey decision-making scopes of multiple fixed value.
8. signal compensation method as claimed in claim 6, is characterized in that, multiple grey decision-making of described original gate signal and described multiple second penalty coefficient are exponentially or the relation of logarithm.
9. signal compensation method as claimed in claim 6, it is characterized in that, multiple grey decision-making that multiple grey decision-making of described compensation signal equal individually described original gate signal are multiplied by individually described multiple first penalty coefficient and described multiple second penalty coefficient.
10. liquid signal compensation method as claimed in claim 6, is characterized in that, described correcting circuit is corrected described original gate signal by gamma correction mode.
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| CN201510940409.6A CN105374336B (en) | 2015-12-15 | 2015-12-15 | Liquid crystal display and grid signal compensation method |
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| CN201510940409.6A CN105374336B (en) | 2015-12-15 | 2015-12-15 | Liquid crystal display and grid signal compensation method |
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| CN105374336B CN105374336B (en) | 2019-02-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109637499A (en) * | 2019-01-17 | 2019-04-16 | 硅谷数模半导体（北京）有限公司 | The control method and device of display panel brightness |
| CN109712583A (en) * | 2019-02-14 | 2019-05-03 | 惠州市华星光电技术有限公司 | The method of adjustment of the overdrive table of display device |
| WO2020073433A1 (en) * | 2018-10-09 | 2020-04-16 | 深圳市华星光电半导体显示技术有限公司 | Driving device and method for liquid crystal display panel |
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Cited By (3)
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| CN105374336B (en) | 2019-02-26 |
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