CN207883277U - A kind of gamma electric voltage output device and liquid crystal display device - Google Patents
A kind of gamma electric voltage output device and liquid crystal display device Download PDFInfo
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- CN207883277U CN207883277U CN201820317180.XU CN201820317180U CN207883277U CN 207883277 U CN207883277 U CN 207883277U CN 201820317180 U CN201820317180 U CN 201820317180U CN 207883277 U CN207883277 U CN 207883277U
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Abstract
The utility model embodiment discloses a kind of gamma electric voltage output device and liquid crystal display device, and gamma electric voltage output device includes at least three memories, and memory stores gamma group, the corresponding field-of-view mode of each gamma group；Gamma group selection chip, gamma group selection chip includes multiple selection signal input terminals and selection signal output end, the electrical connection corresponding with the gamma group signal output end of memory of selection signal input terminal, gamma group selection chip response field-of-view mode select a gamma group and export；Multiple digital analog converters, digital analog converter include changing over signal inputs and conversion signal output end, and changing over signal inputs is corresponding with selection signal output end to be electrically connected, and gamma group is converted to gamma electric voltage group and is exported by conversion signal output end by digital analog converter.By the technical solution of the utility model, corresponding gamma electric voltage is selectively exported according to field-of-view mode to be responded, meets the demand of liquid crystal display panel dynamic visual angle.
Description
Technical field
The utility model embodiment is related to display technology field more particularly to a kind of gamma electric voltage output device and liquid crystal
Showing device.
Background technology
With the continuous development of electronic technology, the height screen resolution such as tablet computer and high definition television shows equipment increasingly
Favored by user, user shows it the quality of picture, and higher requirements are also raised.Wherein, it may be programmed gamma correction buffering electricity
Road chip (P-Gamma IC) is a kind of common pio chip showing equipment applied to high screen resolution, according to burning
Code exports gamma electric voltage, and realizes by gamma electric voltage the display of picture, the gamma electric voltage of P-Gamma IC outputs it is good
The bad display effect for directly affecting display equipment.
On the other hand, user is more and more diversified to the visual requirement of liquid crystal display device, for dynamic visual angle technology, together
Different visual angles pattern can be arranged in one liquid crystal display device, such as same liquid crystal display device both includes wide viewing angle pattern, is also wrapped
Include narrow viewing angle pattern, thus how to be arranged gamma electric voltage output device make its meet the requirement of liquid crystal display panel dynamic visual angle at
For urgent problem to be solved.
Utility model content
In view of this, the utility model embodiment provides a kind of gamma electric voltage output device and liquid crystal display device, make
Corresponding gamma electric voltage can selectively be exported according to field-of-view mode to be responded by obtaining gamma electric voltage output device, meet liquid
The demand of LCD panel dynamic visual angle.
In a first aspect, the utility model embodiment provides a kind of gamma electric voltage output device, including：
At least three memories, each memory include gamma group signal output end, and the memory is for storing gamma
Group, each gamma group correspond to a field-of-view mode；
Gamma group selection chip, the gamma group selection chip include multiple selection signal input terminals and multiple selection signals
Output end, selection signal input terminal electrical connection corresponding with the gamma group signal output end, the gamma group selection chip
For responding the field-of-view mode one gamma group of selection and exporting the gamma group by the selection signal output end；
Multiple digital analog converters, the digital analog converter are arranged in a one-to-one correspondence with the selection signal output end, the number
Mode converter includes changing over signal inputs and conversion signal output end, and the changing over signal inputs and the selection signal are defeated
Outlet corresponds to electrical connection, and the digital analog converter is used to the gamma group that the changing over signal inputs inputs being converted to gamma electricity
Pressure group is simultaneously exported by the conversion signal output end.
Further, a memory is for storing the corresponding first gamma group of the first field-of-view mode, a storage
For device for storing the corresponding second gamma group of the second field-of-view mode, a memory is corresponding for storing the second field-of-view mode
Third gamma group.
Further, the gamma group selection chip further includes：
At least two control signal inputs, the gamma group selection chip are used for defeated according to the control signal input
The control signal entered determines the field-of-view mode of the gamma group selection chip response.
Further, the gamma electric voltage output device further includes：
Communication bus, all memories are electrically connected with the communication bus, host computer by the communication bus to
The corresponding memory read/write gamma group.
Further, the communication bus is twin wire universal serial bus.
Further, the gamma electric voltage output device further includes：
Multiple voltage-stablizers, the voltage-stablizer include voltage regulation signal input terminal and voltage regulation signal output end, the voltage-stablizer with
The digital analog converter is arranged in a one-to-one correspondence, and the voltage regulation signal input terminal is electrically connected with the conversion signal output end.
Second aspect, the utility model embodiment provide a kind of liquid crystal display device, including the gal described in first aspect
Horse voltage output device.
Further, the liquid crystal display device further includes：
Source driving chip and a plurality of data signal line, the source driving chip include gamma voltage signal input terminal and
The output end of data signal output, the gamma voltage signal input terminal and the gamma electric voltage output device corresponds electricity
Connection, data signal output electrical connection corresponding with the data signal line, the source driving chip are used for according to institute
The gamma electric voltage group for stating the input of gamma voltage signal input terminal controls the data-signal of the data signal output output.
The utility model embodiment provides a kind of gamma electric voltage output device and liquid crystal display device, passes through and gamma is arranged
Voltage output device includes at least three memories and gamma group selection chip, and setting memory stores corresponding different visual angles mould
The gamma group of formula, the selection signal input terminal of gamma group selection chip is corresponding with the gamma group signal output end of memory to be electrically connected
It connects, gamma group selection chip can respond field-of-view mode and select a gamma group, the selection signal output end of gamma group selection chip
It is electrically connected with the changing over signal inputs of digital analog converter, gamma group selection chip will respond visual angle by selection signal output end
The gamma group of model selection exports, and according to this, gamma electric voltage output device can be selectively defeated according to field-of-view mode to be responded
Go out corresponding gamma electric voltage, meets the demand of liquid crystal display panel dynamic visual angle.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art does one and simply introduces, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram for gamma electric voltage output device that the utility model embodiment provides；
Fig. 2 is a kind of gamma curve for the corresponding gamma group of second field-of-view mode that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram of another gamma electric voltage output device provided by the utility model；
Fig. 4 is a kind of structural schematic diagram for liquid crystal display device that the utility model embodiment provides；
Fig. 5 is the sequence diagram of liquid crystal display device shown in Fig. 4.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, it illustrates only for ease of description, in attached drawing and the relevant part of the utility model rather than entire infrastructure.Through this theory
In bright book, same or analogous drawing reference numeral represents same or analogous structure, element or flow.It should be noted that not
In the case of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.
The gamma electric voltage output device that the utility model embodiment provides includes at least three memories, gamma group selection core
Piece and multiple digital analog converters, each memory include gamma group signal output end, and gamma group selection chip includes multiple selections
Signal input part and multiple selection signal output ends, digital analog converter include changing over signal inputs and conversion signal output end,
The electrical connection corresponding with gamma group signal output end of selection signal input terminal, the selection of digital analog converter and gamma group selection chip are believed
Number output end is arranged in a one-to-one correspondence and the changing over signal inputs of digital analog converter and the selection signal of gamma group selection chip are defeated
Outlet corresponds to electrical connection.Memory corresponds to a field-of-view mode, gamma group selection chip for storing gamma group, each gamma group
For responding field-of-view mode one gamma group of selection and exporting the gamma group by selection signal output end, digital analog converter is used for will
The gamma group of changing over signal inputs input is converted to gamma electric voltage and is exported by conversion signal output end.
With the continuous development of electronic technology, the height screen resolution such as tablet computer and high definition television shows equipment increasingly
Favored by user, user shows it the quality of picture, and higher requirements are also raised.Wherein, it may be programmed gamma correction buffering electricity
Road chip (P-Gamma IC) is a kind of common pio chip showing equipment applied to high screen resolution, according to burning
Code exports gamma electric voltage, and realizes by gamma electric voltage the display of picture, the gamma electric voltage of P-Gamma IC outputs it is good
The bad display effect for directly affecting display equipment.On the other hand, user is more and more to the visual requirement of liquid crystal display device
Sample, for dynamic visual angle technology, different visual angles pattern, such as same liquid crystal display dress can be arranged in same liquid crystal display device
It both includes wide viewing angle pattern to set, and also includes narrow viewing angle pattern, therefore gamma electric voltage output device, which how is arranged, makes it meet liquid crystal
The requirement of display panel dynamic visual angle becomes urgent problem to be solved.
The utility model embodiment includes at least three memories and gamma group by the way that gamma electric voltage output device is arranged
Chip, setting memory is selected to store the gamma group of corresponding different visual angles pattern, the selection signal input of gamma group selection chip
End electrical connection corresponding with the gamma group signal output end of memory, gamma group selection chip can respond field-of-view mode and select a gal
The selection signal output end of horse group, gamma group selection chip is electrically connected with the changing over signal inputs of digital analog converter, gamma group
Chip is selected to export the gamma group for responding field-of-view mode selection by selection signal output end, according to this, gamma electric voltage output dress
Corresponding gamma electric voltage can selectively be exported according to field-of-view mode to be responded by setting, and meet liquid crystal display panel dynamic vision
The demand at angle.
It is the core concept of the utility model above, the following will be combined with the drawings in the embodiments of the present invention, to this reality
It is clearly and completely described with the technical solution in new embodiment.Based on the embodiments of the present invention, this field is general
Without making creative work, the every other embodiment obtained belongs to the utility model to logical technical staff
The range of protection.
Fig. 1 is a kind of structural schematic diagram for gamma electric voltage output device that the utility model embodiment provides.Such as Fig. 1 institutes
Show, gamma electric voltage output device includes at least three memories 1, gamma group selection chip 2 and multiple digital analog converters 3, each
Memory 1 includes gamma group signal output end A, and gamma group selection chip 2 includes multiple selection signal input terminal B1 and multiple choosings
Signal output end B2 is selected, digital analog converter 3 includes changing over signal inputs C1 and conversion signal output end C2, selection signal input
B1 electrical connections corresponding with gamma group signal output end A, digital analog converter 3 and the selection signal of gamma group selection chip 2 is held to export
End B2 is arranged in a one-to-one correspondence and the changing over signal inputs C1 of digital analog converter 3 and the selection signal of gamma group selection chip 2 are defeated
Outlet B2 corresponds to electrical connection.Memory 1 corresponds to a field-of-view mode, gamma group selection for storing gamma group, each gamma group
Chip 2 is for responding field-of-view mode one gamma group of selection and exporting the gamma group, digital-to-analogue conversion by selection signal output end B2
Device 3 be used for by the gamma group that changing over signal inputs C1 is inputted be converted to gamma electric voltage and by conversion signal output end C2 it is defeated
Go out.
Specifically, the gamma group that gamma group selection chip 2 selects includes the gal of all conversion signal output end C2 outputs
The information of horse voltage, the gamma group selected is the digital signal of these corresponding gamma electric voltages, and the gamma stored in memory 1
Group and the field-of-view mode of liquid crystal display device correspond, and the field-of-view mode of liquid crystal display device is different, and corresponding gamma group is not
Together.Gamma group selection chip 2 can select the gamma group in a memory 1 simultaneously according to the field-of-view mode of liquid crystal display device demand
The gamma group is transmitted to the changing over signal inputs C1 of digital analog converter 3, digital analog converter 3 is defeated by changing over signal inputs C1
The gamma group of the digital signal form entered is converted to the gamma electric voltage of analog signal form, and defeated by conversion signal output end C2
Go out, the conversion signal output end C2 of digital analog converter 3 can realize root as the output end C0 of entire gamma electric voltage output device
Gamma electric voltage group selection is exported according to different field-of-view modes.Can include according in the gamma group stored in memory 1
The quantity of gamma electric voltage is correspondingly arranged the quantity of digital analog converter 3, for example, the gamma group stored in memory 1 includes 12 groups
Voltage, then it includes 12 digital analog converters 3 that gamma electric voltage output device, which can be arranged,.
Optionally, a memory 1 can be used for storing the corresponding first gamma group of the first field-of-view mode, and a memory 1 can
The corresponding second gamma group of second field-of-view mode for storage, a memory 1 can be used for storing the second field-of-view mode and correspond to
Third gamma group.Illustratively, as shown in Figure 1, it includes three memories 1, storage that gamma electric voltage output device, which can be arranged,
It is stored with the corresponding first gamma group of the first field-of-view mode in device 11, the second field-of-view mode corresponding is stored in memory 12
Two gamma groups are stored with the corresponding third gamma group of the second field-of-view mode in memory 13.
Illustratively, it is wide viewing angle pattern that the first field-of-view mode, which can be arranged, when liquid crystal display device is in wide viewing angle mould
When formula, user watches liquid crystal display device with large viewing, and the reality of picture and liquid crystal display device that user actually sees is aobvious
Show picture there is no relatively large deviation, the first gamma group is the corresponding gamma group of wide viewing angle pattern.Second visual angle can be set
Pattern is narrow viewing angle pattern, and narrow viewing angle pattern is the field-of-view mode being arranged for confidentiality, is regarded when liquid crystal display device is in narrow
When angle mould formula, user only can just see the actual displayed picture of liquid crystal display device, the second gal when facing liquid crystal display device
Horse group is the corresponding two groups of different gamma groups of the second field-of-view mode with third gamma group.
Illustratively, the corresponding gamma curve of the first gamma group can be 2.2 curves of gamma, and the second gamma group is corresponding
It can be equivalent to 1.5 curves of gamma after gamma curve and the corresponding gamma curve synthesis of third gamma group.Fig. 2 is that this practicality is new
The gamma curve for the corresponding gamma group of a kind of second field-of-view mode that type embodiment provides, as shown in Fig. 2, curve a is the second gal
The corresponding gamma curve of horse group, curve b be the corresponding gamma curve of third gamma group, curve c be 1.5 curves of gamma, second
It can be equivalent to 1.5 curve c of gamma after the corresponding gamma curve synthesis of gamma group corresponding gamma curve a and third gamma group b.
Specifically, if the second field-of-view mode of setting, i.e. narrow viewing angle pattern only include one group of gamma group, with liquid crystal display device
For the picture that positive visual angle is seen is white gravoply, with black engraved characters, slightly there is deviation user and just can be appreciated that white with black word in visual angle,
I.e. setting narrow viewing angle pattern, which only includes one group of gamma group, to cause liquid crystal display device to there are problems that gray-scale inversion, and influencing user makes
With the experience of liquid crystal display device.Corresponding two groups of different gamma groups are set under narrow viewing angle pattern, i.e., it is corresponding under narrow viewing angle pattern
Second gamma group and third gamma group can be effectively improved liquid crystal display device existing gray-scale inversion under narrow viewing angle pattern and ask
Topic.
Optionally, at least two control signal input D, gamma group selection chip 2 are used for according to control signal input D
The control signal of input determines the field-of-view mode that gamma group selection chip 2 responds.As shown in Figure 1, gamma group is illustratively arranged
It includes two control signal input D of first control signal input terminal D1 and second control signal input terminal D2, gal to select chip 2
Horse group selection chip 2 is used for the control signal according to first control signal input terminal D1 and the D2 inputs of second control signal input terminal
Determine the field-of-view mode that gamma group selection chip 2 responds.
It illustratively, can be according to first control signal input terminal D1 and second control signal input terminal D2 incoming levels
The field-of-view mode that height situation responds gamma group selection chip 2 selects, such as when first control signal input terminal D1 is defeated
Enter low level, when second control signal input terminal D2 input high levels, gamma group selection chip 2 responds the first field-of-view mode, i.e.,
Gamma group selection chip 2 selects the corresponding first gamma group output of the first field-of-view mode stored in memory 11；When the first control
When the equal input high level of signal input part D1 and second control signal input terminal D2 processed, the response of gamma group selection chip 2 second regards
Angle mould formula, such as gamma group selection chip 2 select the corresponding second gamma group of the second field-of-view mode stored in memory 13 defeated
Go out；When first control signal input terminal D1 input high levels, second control signal input terminal D2 input low levels, the choosing of gamma group
It selects chip 2 and responds the second field-of-view mode, such as gamma group selection chip 2 selects the second field-of-view mode pair stored in memory 12
The the second gamma group output answered.Illustratively, the first gamma group corresponds to the wide viewing angle pattern of liquid crystal display device, the second gamma group
Two groups of different gamma groups under the narrow viewing angle pattern of liquid crystal display device are corresponded to third gamma group, are realized according to this to different gals
The selectivity of horse group exports so that user can select the wide viewing angle pattern of liquid crystal display device according to demand, can also basis
Demand selects the narrow viewing angle pattern of liquid crystal display device, meets the needs of liquid crystal display device dynamic visual angle.
It should be noted that only illustratively setting gamma group selection chip 2 includes two control signal inputs to Fig. 1
There are correspondences with the quantity of memory 1 for the quantity of D, control signal input D.For example, when memory 1 number be more than etc.
In 3, when being less than or equal to 4, it includes two control signal inputs that gamma group selection chip 2, which can be arranged, and each control signal is defeated
Enter the corresponding two different level states in end, two control signal input combinations are at best able to realize that four select a function；When depositing
The number of reservoir 1 is more than or equal to 5, and when being less than or equal to 8, it includes three control signal inputs that gamma group selection chip 2, which can be arranged,
End, each control signal input correspond to two different level states, and three control signal input combinations are at best able to reality
Existing eight select a function, and so on.It is further to note that above-mentioned high level and low level are relative concept, this practicality is new
Type embodiment is not construed as limiting high level and low level specific level value.
Optionally, as shown in Figure 1, gamma electric voltage output device can also include communication bus 4, all memories 1 with
Communication bus 4 is electrically connected, and host computer reads and writes gamma group by communication bus 4 to corresponding memory 1.Illustratively, such as Fig. 1 institutes
Show, communication bus 4 can be twin wire serial communication bus, and twin wire serial communication bus carries out data transmission only needing serial
Clock cable 41 and serial data signal line 42 can be realized, and circuit structure is simple and occupies little space.Gamma electric voltage exports
Device includes three memories 1, all memories 1 and the serial clock signal line 41 and serial data signal in communication bus 4
Line 42 is electrically connected, and host computer can read and write gamma group by communication bus 4 to corresponding memory 1.Illustratively, host computer can
The corresponding first gamma group of the first field-of-view mode is written to memory 11 by communication bus 4, by communication bus 4 to storage
The corresponding second gamma group of the second field-of-view mode is written in device 12, and the second field-of-view mode is written to memory 13 by communication bus 4
Corresponding third gamma group.
On the basis of the above embodiments, Fig. 3 is the knot of another gamma electric voltage output device provided by the utility model
Structure schematic diagram, unlike the gamma electric voltage output device of structure shown in Fig. 1, as shown in figure 3, gamma electric voltage output device is also
Including multiple voltage-stablizers 5, voltage-stablizer 5 includes voltage regulation signal input terminal D1 and voltage regulation signal output end D2, and voltage-stablizer 5 turns with digital-to-analogue
Parallel operation 3 is arranged in a one-to-one correspondence, and voltage regulation signal input terminal D1 is electrically connected with conversion signal output end C2, the voltage regulation signal of voltage-stablizer 5
Output end D2 can be as the output end C0 of entire gamma electric voltage output device, through 3 transformed gamma electric voltage of digital analog converter
It is exported by voltage-stablizer 5, the gamma electric voltage of gamma electric voltage output device output can be stablized, improve gamma electric voltage output device
Load capacity.
On the basis of the above embodiments, Fig. 4 is a kind of knot for liquid crystal display device that the utility model embodiment provides
Structure schematic diagram can also include as shown in figure 4, liquid crystal display device includes the gamma electric voltage output device 100 of above-described embodiment
Source driving chip 101 and a plurality of data signal line 102, source driving chip include gamma voltage signal input terminal E1 and data
Signal output end E2, gamma voltage signal input terminal E1 are electrically connected with the output end C0 one-to-one correspondence of gamma electric voltage output device,
Data signal output E2 electrical connections corresponding with data signal line 102, source driving chip 101 are used for according to gamma voltage signal
The data-signal of the gamma electric voltage control data signal output E2 outputs of input terminal E1 inputs.
Illustratively, as shown in figure 4, liquid crystal display device further include grid drive chip 103 and with gate driving core
The scan signal line 104 that piece 103 is electrically connected, pixel unit 105, which is located at scan signal line 104 and intersects with data signal line 102, to be set
It sets in the space to be formed, grid drive chip 103 can be swept by scan signal line 104 to the input of corresponding pixel unit 105
Signal is retouched, it is right therewith that pixel unit 105 is connected under the action of the scanning signal that the scan signal line 104 being electrically connected inputs
The data signal line 102 that should be electrically connected, source driving chip 101 are defeated to corresponding pixel unit 105 by data signal line 102
Enter data-signal, the liquid crystal molecule in pixel unit 105 deflects, and liquid crystal display device realizes display function according to this.
In conjunction with Fig. 1 and Fig. 4, digital analog converter 3 inputs changing over signal inputs C1 in gamma electric voltage output device 100
Gamma group is converted to gamma electric voltage and is exported by conversion signal output end C2, the gamma voltage signal of source driving chip 101
The conversion signal output end C2 one-to-one correspondence of the output end C0 of input terminal E1 and gamma electric voltage output device, i.e. conversion module are electrically connected
It connects, source driving chip 101 can receive the gamma electric voltage of the output of gamma electric voltage output device 100, and according to gamma electric voltage
Pass through corresponding data signal output outputting data signals.
Illustratively, gamma electric voltage output device 100 can be set, 12 road gamma electric voltages, source electrode is exported by output end C0
Driving chip 11 is converted to 256 circuit-switched data signals according to the 12 road gamma electric voltages received, and source driving chip packet can be arranged
Include 256 data signal output E2, each data signal output E2 outputs all the way data-signal to corresponding data-signal
Line 102, the pixel unit 105 in liquid crystal display device are shown according to the data-signal received.
On the basis of the above embodiments, Fig. 5 is the sequence diagram of liquid crystal display device shown in Fig. 4, in conjunction with Fig. 1, Fig. 4 and figure
5, D1 ' indicate that the control signal of the first control signal input terminal D1 inputs of gamma group selection chip 2, D2 ' indicate the choosing of gamma group
The control signal of the second control signal input terminal D2 inputs of chip 2 is selected, S indicates the data signal end of source driving chip 101
The data-signal of E2 outputs.Illustratively, the first control signal input terminal D1 inputs of gamma group selection chip 2 can be set
Control signal is high level, when the control signal of second control signal input terminal D2 inputs is low level, gamma group selection chip 2
It selects the corresponding second gamma group of the second field-of-view mode and exports；When the first control signal input terminal of gamma group selection chip 2
When D1 and the control signal of second control signal input terminal D2 inputs are high level, the selection of gamma group selection chip 2 second regards
The corresponding third gamma group of angle mould formula simultaneously exports.
Compares figure 4, in t11, t12 and t13 period, gamma group selection chip 2 selects the second field-of-view mode corresponding the
Two gamma groups simultaneously export, and in t21, t22 and t23 period, gamma group selection chip 2 selects the corresponding third of the second field-of-view mode
Gamma group simultaneously exports, and t11, t12, t13, t21, t22 and t23 can be arranged corresponds to 6 frames respectively and show picture, then first frame, the
Three frames and the 5th frame show that picture corresponds to the second gamma group, and the second frame, the 4th frame and the 6th frame show that picture corresponds to third gamma
Group, singular frame show that picture and even frame show that picture corresponds to the data signal output E2 outputs of source driving chip 101
The level of data-signal it is of different sizes so that adjacent two frame shows that picture forms bright dark comparison.In addition, with reference to Fig. 4, source electrode drives
Polar reversion can occur at regular intervals for the data-signal of the data signal output E2 outputs of dynamic chip 101, limited to keep away
Polarization problem existing for liquid crystal molecule of the liquid crystal display device when being shown in pixel unit is exempted from.
It should be noted that the utility model embodiment shows that attached drawing is only exemplary the size for indicating each element, not
Represent the actual size of each element in gamma electric voltage output device and liquid crystal display device.It should be noted simultaneously that above-mentioned
It can be combined with each other between embodiment.
The utility model embodiment includes at least three memories and gamma group by the way that gamma electric voltage output device is arranged
Chip, setting memory is selected to store the gamma group of corresponding different visual angles pattern, the selection signal input of gamma group selection chip
End electrical connection corresponding with the gamma group signal output end of memory, gamma group selection chip can respond field-of-view mode and select a gal
The selection signal output end of horse group, gamma group selection chip is electrically connected with the changing over signal inputs of digital analog converter, gamma group
Chip is selected to export the gamma group for responding field-of-view mode selection by selection signal output end, according to this, gamma electric voltage output dress
Corresponding gamma electric voltage can selectively be exported according to field-of-view mode to be responded by setting, and meet liquid crystal display device dynamic vision
The demand at angle.
More than, only it is the preferred embodiment of the utility model, limit in any form not is made to the utility model
System, although the utility model has been disclosed with preferred embodiment as above, is not limited to the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, when the technology contents work using the disclosure above
Go out a little change or be modified to the equivalent embodiments of equivalent variations, as long as be without departing from the content of the technical scheme of the utility model, according to
According to the technical essence of the utility model to any simple modification, equivalent change and modification made by above example, still fall within
In the range of technical solutions of the utility model.
Claims (8)
1. a kind of gamma electric voltage output device, which is characterized in that including：
At least three memories, each memory include gamma group signal output end, and the memory is for storing gamma group, often
A gamma group corresponds to a field-of-view mode；
Gamma group selection chip, the gamma group selection chip include multiple selection signal input terminals and the output of multiple selection signals
End, selection signal input terminal electrical connection corresponding with the gamma group signal output end, the gamma group selection chip are used for
Response field-of-view mode selects a gamma group and exports the gamma group by the selection signal output end；
Multiple digital analog converters, the digital analog converter are arranged in a one-to-one correspondence with the selection signal output end, and the digital-to-analogue turns
Parallel operation includes changing over signal inputs and conversion signal output end, the changing over signal inputs and the selection signal output end
Corresponding electrical connection, the digital analog converter are used to the gamma group that the changing over signal inputs inputs being converted to gamma electric voltage group
And it is exported by the conversion signal output end.
2. gamma electric voltage output device according to claim 1, which is characterized in that a memory is for storing first
The corresponding first gamma group of field-of-view mode, a memory is for storing the corresponding second gamma group of the second field-of-view mode, and one
The memory is for storing the corresponding third gamma group of the second field-of-view mode.
3. gamma electric voltage output device according to claim 1, which is characterized in that the gamma group selection chip also wraps
It includes：
At least two control signal inputs, what the gamma group selection chip was used to be inputted according to the control signal input
Control signal determines the field-of-view mode of the gamma group selection chip response.
4. gamma electric voltage output device according to claim 1, which is characterized in that further include：
Communication bus, all memories are electrically connected with the communication bus, and host computer is by the communication bus to correspondence
The memory read/write gamma group.
5. gamma electric voltage output device according to claim 4, which is characterized in that the communication bus is that twin wire is serial
Bus.
6. gamma electric voltage output device according to claim 1, which is characterized in that further include：
Multiple voltage-stablizers, the voltage-stablizer include voltage regulation signal input terminal and voltage regulation signal output end, the voltage-stablizer with it is described
Digital analog converter is arranged in a one-to-one correspondence, and the voltage regulation signal input terminal is electrically connected with the conversion signal output end.
7. a kind of liquid crystal display device, which is characterized in that export and fill including claim 1-6 any one of them gamma electric voltages
It sets.
8. liquid crystal display device according to claim 7, which is characterized in that further include：
Source driving chip and a plurality of data signal line, the source driving chip include gamma voltage signal input terminal and data
The output end one-to-one correspondence of signal output end, the gamma voltage signal input terminal and the gamma electric voltage output device is electrically connected
It connects, data signal output electrical connection corresponding with the data signal line, the source driving chip is used for according to
The gamma electric voltage group of gamma voltage signal input terminal input controls the data-signal of the data signal output output.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109448647A (en) * | 2018-12-03 | 2019-03-08 | 昆山龙腾光电有限公司 | View angle switch framework, method and liquid crystal display device |
| CN109559690A (en) * | 2018-12-04 | 2019-04-02 | 昆山龙腾光电有限公司 | Gamma voltage generation circuit, method and liquid crystal display device |
| CN109658899A (en) * | 2019-02-28 | 2019-04-19 | 昆山龙腾光电有限公司 | Voltage commutation circuit, gamma voltage generation circuit and liquid crystal display device |
| CN110223647A (en) * | 2019-05-06 | 2019-09-10 | 惠科股份有限公司 | Driving circuit and display device |
| CN110415654A (en) * | 2019-07-23 | 2019-11-05 | 昆山龙腾光电有限公司 | LED drive chip, LED driving method and liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448647A (en) * | 2018-12-03 | 2019-03-08 | 昆山龙腾光电有限公司 | View angle switch framework, method and liquid crystal display device |
| CN109559690A (en) * | 2018-12-04 | 2019-04-02 | 昆山龙腾光电有限公司 | Gamma voltage generation circuit, method and liquid crystal display device |
| CN109559690B (en) * | 2018-12-04 | 2021-01-15 | 昆山龙腾光电股份有限公司 | Gamma voltage generating circuit, method and liquid crystal display device |
| CN109658899A (en) * | 2019-02-28 | 2019-04-19 | 昆山龙腾光电有限公司 | Voltage commutation circuit, gamma voltage generation circuit and liquid crystal display device |
| CN110223647A (en) * | 2019-05-06 | 2019-09-10 | 惠科股份有限公司 | Driving circuit and display device |
| CN110415654A (en) * | 2019-07-23 | 2019-11-05 | 昆山龙腾光电有限公司 | LED drive chip, LED driving method and liquid crystal display device |
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Address after: 215301 No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301 No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |