CN106205441A - Pixel driving circuit - Google Patents
Pixel driving circuit Download PDFInfo
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- CN106205441A CN106205441A CN201610553177.3A CN201610553177A CN106205441A CN 106205441 A CN106205441 A CN 106205441A CN 201610553177 A CN201610553177 A CN 201610553177A CN 106205441 A CN106205441 A CN 106205441A
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- 238000012360 testing method Methods 0.000 claims abstract description 171
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 description 12
- 101100094821 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SMX2 gene Proteins 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 102100024233 High affinity cAMP-specific 3',5'-cyclic phosphodiesterase 7A Human genes 0.000 description 4
- 101001117267 Homo sapiens High affinity cAMP-specific 3',5'-cyclic phosphodiesterase 7A Proteins 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- -1 SMX1 ' Proteins 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
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Classifications
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
Abstract
The invention discloses a pixel driving circuit which is suitable for a display panel. The pixel driving circuit has a plurality of multiplexers and a plurality of test switches. Each multiplexer has an input terminal, two output terminals and a control terminal. The two output ends are respectively coupled with two of the sub-pixels, and the control end is used for receiving multiplex control signals. One end of each test switch is coupled with one of the test signal lines, the other end of each test switch is coupled with the input end of one of the multiplexers, and the control end of each test switch is used for receiving the test control signal. The voltage level of the test signal on each test signal line is a constant value, and the sub-pixels coupled to each multiplexer are defined as the sub-pixels with the same polarity.
Description
Technical field
The present invention is about a kind of pixel-driving circuit, a kind of pixel driver electricity driving pixel with direct current news source
Road.
Background technology
Along with display floater resolution promotes, number or the output of drive integrated circult also can increase accordingly.Cause
This is in a kind of way, and on the circuit of panel, meeting is by arranging the multiplexer circuit number with minimizing drive integrated circult, from
And facilitate mechanism's design or the design of circuit planning (layout), the design cost of panel can also be reduced simultaneously.
When multiplexer circuit framework mates with number of pixels, DC test news that cell test can be arranged in pairs or groups source is surveyed
Examination.But, when not mating with dot structure due to multiplexer circuit framework, cell test is necessary for alternating-current measurement news source of arranging in pairs or groups
Test.For example, under the dot structure of RGB, when the framework that multiplexer circuit is a pair three, multiplexer
Circuit framework matches with dot structure, and DC test news that cell test can be arranged in pairs or groups source is tested.Same at RGB
Dot structure under, when the framework that multiplexer circuit is a pair two, multiplexer circuit framework does not mates with dot structure, cell
Alternating-current measurement of often must arranging in pairs or groups in test news source is tested, to overcome such structure not mate.That is list is worked as
The sub-pixel number of one pixel be multiplexer output number non-integral multiple time, it is necessary to alternating-current measurement news source carry out cell survey
Examination.And from the point of view of with regard to current method of testing, tester must according to different circuit framework use different test circuit or
Method of testing, and cannot be required according to reality test, freely select to exchange news source or direct current news source and test.
On the other hand, in the case of size of display panels becomes greatly now, display floater is relative to the equivalence of test lead
Impedance increases the most accordingly, may need to expend more merit if large size panel being carried out test with alternating-current measurement news source
Rate, or need the more time allow test signal voltage of transformation level exactly, thus improve testing cost.But
It is that as earlier mentioned, the most one can not interrogated with direct current when dot structure is unmatched with multiplexer circuit framework
Source carries out circuit or the method tested, and makes to test in practice by sizable puzzlement.
Summary of the invention
The invention reside in the pixel-driving circuit providing a kind of dot structure when not mating with multiplexer circuit framework, with gram
Take panel test to be limited to dot structure and the matching relationship of multiplexer circuit framework and direct current news source cannot be used by unrestricted choice
Or the problem that exchange news source carries out testing.
The invention discloses a kind of pixel-driving circuit, described pixel-driving circuit is applicable to display floater.And display
Panel includes that multiple pixel, each pixel include the first sub-pixel, the second sub-pixel and the 3rd sub-pixel.Pixel-driving circuit has
There are multiple multiplexer and multiple test switches.Each multiplexer has input, two outfans and controls end.Two described outputs
End is respectively coupled to wherein the two of sub-pixel, and control end is in order to receive multiplexing's control signal, and each multiplexer is in order to according to multiplexing
Input is optionally conducting to one of them of two outfans by control signal.One end of each test switch couples a plurality of survey
One of them of trial signal line, the other end of each test switch couples the input of a wherein multiplexer, and each test switchs
Control end in order to receive test control signal.Each test switch will be in order to optionally will according to the test control signal received
The test holding wire coupled is conducted to the input of the multiplexer coupled.Wherein, the test signal on each test holding wire
Voltage quasi position is definite value, and the sub-pixel that couples of each multiplexer is defined as the sub-pixel of same polarity.
The invention discloses a kind of pixel-driving circuit, described pixel-driving circuit is applicable to display floater.Display surface
Plate has multiple pixel, and each pixel has M sub-pixel.Pixel-driving circuit has multiple multiplexer and opens with multiple tests
Close.Each multiplexer has an input, N number of outfan and one and controls end.Each outfan couples described multiple sub-pixels
One of them, control end in order to receive multiplexing's control signal, each multiplexer in order to according to multiplexing's control signal optionally
One of them of the sub-pixel being conducted to input to couple.One end of each test switch couples its of a plurality of test holding wire
One of, the other end of each test switch couples the input of a wherein multiplexer, the control end of each test switch in order to
Receiving test control signal, each test switch is in order to the test letter that optionally will couple according to the test control signal received
Number line is conducted to the input of the multiplexer coupled.Wherein, the voltage quasi position of the test signal on each test holding wire is fixed
Value, those sub-pixels that this multiplexer each couples are defined as the sub-pixel of same polarity, and the sub-picture that each multiplexer couples
The light that element is sent is same colour temperature, M Yu N is positive integer, and N is less than M, and N does not divide exactly M.
Comprehensively the above, the invention discloses a kind of pixel-driving circuit, and described pixel-driving circuit has multiple
Multiplexer drives switch with multiple, and multiplexer in order to be optionally conducted to two inputs according to multiplexing's control signal by input
One of them of end, test switch is then in order to be optionally conducted to coupling by the test holding wire coupled according to test control signal
The input of the multiplexer connect.Wherein, the voltage quasi position of described test signal is definite value, and the sub-picture that each multiplexer couples
Element is defined as the sub-pixel of same polarity.Thereby, it is able in the case of multiplexer framework and dot structure are unmatched with direct current
Display floater is tested by test news source.
The above explanation about present invention and the explanation of following embodiment are in order to demonstrate and to explain the present invention
Spirit and principle, and provide the claims of the present invention further to explain.
Accompanying drawing explanation
Fig. 1 is the circuit diagram according to the pixel-driving circuit depicted in one embodiment of the invention.
Fig. 2 is the circuit diagram according to the pixel-driving circuit depicted in another embodiment of the present invention.
Wherein, reference:
1,1 ' pixel-driving circuit
L1～L6, L1 '～L6 ' test holding wire
ND1～ND6, ND1 '～ND6 ' drive end
Ni1～Ni6, Ni1 '～Ni6 ' input
NO11～NO61, NO12～NO62, NO11 '～NO61 ', NO12 '～NO62 ' outfan
P1～P4 pixel
PR1～PR4 the first sub-pixel
PG1～PG4 the second sub-pixel
PB1～PB4 the 3rd sub-pixel
TC1～TC6, TC1 '～TC12 ' control switch
TM11～TM61, TM12～TM62, TM11～TM61 ', TM12～TM62 ' multiplexing switch
SCT, SCT ' test control signal
SR1, SR2, SG1, SG2, SB1, SB2, SR1 ', SR2 ', SG1 ', SG2 ', SB1 ', SB2 ' test signal
SMX1, SMX2, SMX1 ', SMX2 ' multiplexing's control signal
Detailed description of the invention
Hereinafter describing detailed features and the advantage of the present invention the most in detail, its content be enough to make any ability
The technical staff in territory understands the technology contents of the present invention and implements according to this, and wants according to content disclosed in this specification, right
Ask protection domain and accompanying drawing, any those skilled in the art can be readily understood upon purpose and the advantage that the present invention is correlated with.Below
Embodiment further describe the viewpoint of the present invention, but non-to limit scope of the invention anyways.
Refer to Fig. 1, Fig. 1 is the circuit diagram according to the pixel-driving circuit depicted in one embodiment of the invention.Picture
Element drive circuit 1 is applicable to display floater (not illustrating), and display floater includes multiple pixel, and the structure of display floater should be affiliated
Those skilled in the art can know, only illustrates brief description, actually display floater with pixel P1, P2, P3, P4 at this
Number of pixels be not limited thereto.In this embodiment, for pixel P1, pixel P1 have the first sub-pixel PR1, second
Sub-pixel PG1 and the 3rd sub-pixel PB1.In one embodiment, the first sub-pixel PR1, the second sub-pixel PG1 and the 3rd sub-pixel
PB1 is such as respectively red sub-pixel, green sub-pixels and the blue subpixels in rgb pixels structure.Pixel P2～P4 tool
There are the structure similar with pixel P1 and the characteristics of luminescence, repeat no more in this.
Pixel-driving circuit 1 has multiple multiplexer and multiple test switch TC1～TC6.Each multiplexer has multiplexing
One of them of switch TM11～TM61, and each multiplexer has multiplexing and switchs one of them of TM12～TM62.In Fig. 1 institute
In the embodiment shown, the left side the first yardage identical person of word in the label of multiplexing's switch belongs to same multiplexer.More particularly,
Multiplexing switchs TM11 and multiplexing switchs TM12 and forms one of them multiplexer, and multiplexing switchs TM21 and multiplexing switchs TM22 and forms it
In another multiplexer, multiplexing switchs TM31 and multiplexing and switchs TM32 composition another multiplexer the most again, remaining multiplexer with
The corresponding relation of remaining multiplexing switch is when repeating no more by that analogy.Owing on accompanying drawing, mark is difficult to, the most not in accompanying drawing
In each multiplexer done more indicate, right person of ordinary skill in the field by above-listed narration it should be appreciated that each multiplexer preliminary
Building form, follow-up switch TM11 and multiplexing with the first multiplexer address multiplexing and switchs the multiplexer of TM12 composition, more than second
Multiplexer address multiplexing switchs TM21 and multiplexing and switchs the multiplexer of TM22 composition, with the 3rd multiplexer address multiplexing switch TM31 with
Multiplexing switch TM32 composition multiplexer, follow-up by that analogy, repeat no more.
As it is shown in figure 1, each multiplexer has an input, two outfans and one controls end.For the first multiplexer,
First multiplexer has input Ni1 and outfan NO11, NO12.Wherein, the multiplexing of the first multiplexer switchs the two ends of TM11
Being respectively coupled to the input Ni1 and one of them outfan NO11 of the first multiplexer, multiplexing switchs the two ends of TM12 and is respectively coupled to
The input Ni1 of the first multiplexer and other in which outfan NO12.More specifically, the outfan of the first multiplexer
NO11 couples the first sub-pixel PR1 of pixel P1, and outfan NO12 couples the first sub-pixel PR3 of pixel P3.Other multiplexers
The sub-pixel of outfan and each pixel also have similar annexation.For another angle, in this embodiment, each
Two sub-pixels that two outfans of multiplexer couple send the light of same color.So in another embodiment, each multiplexer
Two sub-pixels that two outfans couple send the light of different colours.Two sons that first two outfans with regard to each multiplexer couple at this
The embodiment of the light that pixel sends same color illustrates.
On the other hand, multiplexing switchs controlling end and then can being considered the control end of the first multiplexer, Duo Gongkai of TM11, TM12
The control end closing TM11, TM12 receives multiplexing's control signal SMX1, SMX2 the most respectively.In this embodiment, letter is controlled as multiplexing
When number SMX1 is high voltage level, it is switched on and outfan NO11 is conducted to input Ni1 that multiplexing switchs TM11, and works as multiplexing
When control signal SMX2 is high voltage level, multiplexing switchs TM12 and is switched on and outfan NO12 is conducted to input Ni1.?
In another kind of embodiment, multiplexing switchs the control end of TM11, TM12 and couples mutually, that is multiplexing switchs TM11, TM12 and is controlled by
Same multiplexing's control signal, only multiplexing switch TM11, TM12 according to multiplexing's control signal different conditions and optionally by
Turn on, that is multiplexing switchs TM11, TM12 and do not simultaneously turns on.Such as, it is high voltage when multiplexing's control signal of this embodiment
During level, multiplexing switchs TM11 and is switched on, and when multiplexing's control signal of this embodiment is low voltage level, multiplexing switchs
TM12 is switched on.Above are only citing demonstration, be actually not limited thereto
Referring again to Fig. 1, in the embodiment shown in fig. 1, one of them one end of test switch TC1～TC6 couples many
One of them of bar test holding wire L1～L6, test switch one of them the other end of TC1～TC6 couples a wherein multiplexer
Input, test switch one of them control end of TC1～TC6 is in order to receive a test control signal SCT, and each test is opened
Close multiplexer in order to optionally to be conducted to couple by the test holding wire coupled according to the test control signal received
Input.For test switch TC1, one end of test switch TC1 couples another of test holding wire L1, test switch TC1
End couples the input Ni1 of the first multiplexer, and the control end testing switch TC1 then receives test control signal SCT.Test is opened
Close TC2～TC6 similar in test switch TC1 with the annexation of other elements, repeat no more in this.In this embodiment, when
When test control signal SCT is high voltage level, test switch TC1 is switched on, and the input Ni1 of the first multiplexer is turned on to
Test holding wire L1.In another embodiment, when test control signal SCT is low voltage level, test switch TC1 is led
Logical.Above are only citing demonstration, be the most actually not limited thereto.
In the embodiment shown in Fig. 1, test holding wire L1～L6 on test signal SR1, SG1, SB1, SR2, SG2,
The voltage quasi position of SB2 is definite value.And the sub-pixel that couples of each multiplexer is defined as the sub-pixel of same polarity.Come in more detail
Saying, in practice, each input Ni1～Ni6 can be coupled to drive integrated circult via drive end ND1～ND6 respectively, to accept
The control of drive integrated circult.Wherein, drive end ND1～ND6 be labeled with "+" or "-", be labeled with "+" person represents reception has
The driving signal of positive polarity, is labeled with "-" person and then represents to receive and have the driving signal of negative polarity.Each sub-pixel PR1～PB4 pair
Multiplexer that Ying Yu couples and the driving signal that is controlled by opposed polarity.Therefore, as it is shown in figure 1, the first multiplexer couple
One sub-pixel PR1 and the first sub-pixel PR3 is controlled by the driving signal of positive polarity, the second sub-pixel that the second multiplexer couples
PG1 and the second sub-pixel PG3 is controlled by the driving signal of negative polarity.Remaining multiplexer closes with the polarity of the sub-pixel coupled
System is when can repeating no more in this by accompanying drawing and described above analogize.
Additionally, in this embodiment, the opposite polarity of the polarity of each of which sub-pixel and another adjacent sub-pixel, and
The opposite polarity of those sub-pixels that the polarity of those sub-pixels that each multiplexer couples couples with another adjacent multiplexer.
With Fig. 1 for example, the opposite polarity of the second sub-pixel PG1 is in the first sub-pixel PR1, and the polarity phase of the second sub-pixel PG1
Anti-in the 3rd sub-pixel PB1.On the other hand, the first multiplexer couples the first sub-pixel PR1 and the first sub-pixel PR3 homopolarity
Property, the second sub-pixel PG1 that the second multiplexer couples and the second sub-pixel PG3 same polarity, but the polarity of the first sub-pixel PR1
With the opposite polarity of the second sub-pixel PG1, and the opposite polarity of the polarity of the first sub-pixel PR1 and the second sub-pixel PG3, first
The opposite polarity of the polarity of sub-pixel PR3 and the second sub-pixel PG1, and the polarity of the first sub-pixel PR3 and the second sub-pixel PG3
Opposite polarity.So above are only citing demonstration, the relative polarity being not limiting as each sub-pixel at this must be same as above-mentioned act
Illustrate model.
For from circuit start, pixel-driving circuit 1 has a display pattern and a test pattern.In display pattern
Time, test switch TC1～TC6 is controlled by test control signal SCT and is not turned on.Each multiplexer is controlled by multiplexing's control signal
SMX1 and multiplexing's control signal SMX2 and optionally input is conducted to one of them outfan.In this embodiment, tool
Body ground is lifted for the first multiplexer, when the first multiplexer is according to the control of multiplexing's control signal SMX1 and multiplexing's control signal SMX2
Outfan NO11 is optionally conducted to input Ni1 or outfan NO12 is conducted to input Ni2 by sequence.Now,
Each test holding wire L1～L6 is such as coupled to ground, but is not limited.
And in test pattern, it is the most switched on test switch TC1～TC6 that multiplexing switchs TM11～TM62.Now, each son
Pixel PR1～PB4 are corresponding luminous according to test signal SR1～SB2 on test holding wire L1～L6 respectively.For example,
When test signal SR1～SB2 is set as relatively high level with write grey decision-making 255 in each sub-pixel, now pixel driver electricity
Display floater belonging to road 1 provides a white picture.The most such as, it is set as relatively high level with write as test signal SR1, SR2
Grey decision-making 255 in first sub-pixel PR1, PR3, remaining test signal be then set as relatively low level with write grey decision-making 0 in
Other sub-pixel.Now the display floater belonging to pixel-driving circuit 1 provides a red picture.Stated differently, since it is same
Individual multiplexer is coupled to the sub-pixel of same color, is therefore able in test process by setting test signal SR1～SB2 respectively
Voltage quasi position, and write desired grey decision-making in corresponding sub-pixel via corresponding multiplexer, thus allow display floater carry
For desired picture, have for tester to judge whether display floater has exception.And as setting test signal in what electricity
Pressure level can freely design definition in corresponding sub-pixel for person of ordinary skill in the field to write what grey decision-making, and
Not only limit with above-mentioned being exemplified as.
In one embodiment, each test holding wire L1～L6 is the same line, say, that each test switch receives
Being same test signal, each sub-pixel is written into same grey decision-making.Or, in another kind of way, respectively test holding wire
L1～L6 can be respectively defined as different groups, and test holding wire L1～L6 in different groups can receive different tests
Signal.For example, test holding wire L1～L3 can be defined as same group, and test holding wire L4～L6 can be defined as separately
One group, now test holding wire L1～L3 is provided same test signal, and test holding wire L4～L6 is carried another test letter
Number.And in practice, test holding wire L1～L6 may be coupled to identical or different short bar (shorting bar), so that coupling
It is connected to the signal that the test holding wire of identical short bar receives identical.Above are only citing demonstration, the most not as
Limit.
Please referring next to Fig. 2, Fig. 2 is the circuit signal according to the pixel-driving circuit depicted in another embodiment of the present invention
Figure.Unlike the embodiment shown in Fig. 1, in the embodiment shown in Figure 2, pixel-driving circuit 1 ' has more test
Switch, namely test switch TC1 '～TC12 '.Additionally, test switch TC1 '～TC12 ' switchs TM11 '～TM62 ' with multiplexing
Annexation the most different compared to the embodiment shown in Fig. 1.In the embodiment shown in Figure 2, test switch TC1 '～
TC12 ' is respectively coupled to the outfan NO1 '～NO12 ' of each multiplexer.
Additionally, in the embodiment shown in Figure 2, the building form of each multiplexer also differs from the embodiment shown in Fig. 1.At figure
In embodiment shown in 2, multiplexing switchs TM11 ' and TM12 ' and forms the first multiplexer, and multiplexing switchs TM21 ' and TM22 ' and forms
One multiplexer, follow-up the most by that analogy, repeat no more.Wherein, multiplexing switchs TM11 ' and is coupled to input Ni1 ' and outfan
Between NO11 ', and multiplexing switchs TM12 ' and is coupled between input Ni1 ' and outfan NO12 '.But it is more specifically, many
Work switch TM11 ' couples the first sub-pixel PR1 of pixel P1 via outfan NO11 ', and multiplexing switchs TM12 ' via outfan
NO12 ' couples the 3rd sub-pixel PB1 of pixel P1.And for the second multiplexer, multiplexing switchs TM21 ' via outfan
NO21 ' couples the second sub-pixel PG1 of pixel P1, and multiplexing switchs TM22 ' and couples the first son of pixel P2 via outfan NO22 '
Pixel PR1.In other words, in the embodiment corresponding to Fig. 2, the color of the sub-pixel that two outfans of each multiplexer are coupled
And differ.
In the embodiment shown in Figure 2, pixel-driving circuit 1 ' has display pattern and test pattern equally.At display mould
In formula and test pattern, pixel-driving circuit 1 ' make that flowing mode is similar makees flowing mode in pixel-driving circuit 1.In display mould
In formula, test switch TC1 '～TC12 ' is controlled by test control signal SCT ' and is not turned on.Each multiplexer is controlled by multiplexing's control
Signal SMX1 ' and multiplexing's control signal SMX2 ' and optionally input is conducted to one of them outfan.In this embodiment
In, for specifically lifting the first multiplexer, the first multiplexer is according to multiplexing's control signal SMX1 ' and multiplexing's control signal SMX2 '
Control sequential optionally outfan NO11 ' is conducted to input Ni1 ' or outfan NO12 ' is conducted to input
End Ni2 '.Now, each test holding wire L1 '～L6 ' is such as coupled to ground, but is not limited.
And in the middle of the test pattern of pixel-driving circuit 1 ', multiplexing switch TM11 '～TM62 ' with test switch TC1 '～
TC12 ' is the most switched on.Now, each sub-pixel PR1～PB4 respectively according to test holding wire L1～L6 on test signal SR1～
SB2 and corresponding luminous.Similar in the embodiment shown in Fig. 1, when test signal SR1～SB2 is set as relatively high level to write
Entering grey decision-making 255 when each sub-pixel, now the display floater belonging to pixel-driving circuit 1 ' provides a white picture.The most such as,
When test signal SR1, SR2 are set as relatively high level, remaining test signal is then set as relatively low level, and now pixel is driven
Display floater belonging to galvanic electricity road 1 ' provides a red picture.Stated differently, since same test holding wire is via corresponding survey
Runin is closed and is coupled to the sub-pixel of same color, is therefore able in test process by setting test signal SR1～SB2 respectively
Voltage quasi position, and write desired grey decision-making in corresponding sub-pixel, thus allow display floater provide desired picture.At this
What what it is not intended to equally how to set test signal in voltage quasi position to write grey decision-making in corresponding sub-pixel.
Above the sending out of continuity is thought, in another embodiment, present invention also offers a kind of pixel-driving circuit, and this pixel is driven
Galvanic electricity road is applicable to display floater.Display floater has multiple pixel, and each pixel has M sub-pixel.Pixel-driving circuit
There are multiple multiplexer and multiple test switches.Each multiplexer has an input, N number of outfan and one and controls end.Each
Outfan couples one of them of described multiple sub-pixels, and control end is in order to receive multiplexing's control signal, and each multiplexer is used
With one of them of the sub-pixel that is optionally conducted to input to couple according to multiplexing's control signal.Each test switch
One end couples one of them of a plurality of test holding wire, and the other end of each test switch couples the input of a wherein multiplexer
End, the control end of each test switch is in order to receive test control signal, and each test switch is in order to according to the test control received
The test holding wire coupled is conducted to the input of the multiplexer coupled by signal-selectivity processed ground.Wherein, each test signal
The voltage quasi position of the test signal on line is definite value, and those sub-pixels that this multiplexer each couples are defined as the son of same polarity
Pixel, and the light that the sub-pixel that couples of each multiplexer is sent is same colour temperature, M Yu N is positive integer, and N is less than M, and N is not divided exactly
M。
Comprehensively the above, the invention discloses a kind of pixel-driving circuit, and described pixel-driving circuit has multiple
Multiplexer drives switch with multiple, and multiplexer in order to be optionally conducted to two inputs according to multiplexing's control signal by input
One of them of end, test switch is then in order to be optionally conducted to coupling by the test holding wire coupled according to test control signal
The input of the multiplexer connect.Wherein, the voltage quasi position of described test signal is definite value, and the sub-picture that each multiplexer couples
Element is defined as the sub-pixel of same polarity.Owing to same test holding wire couples via corresponding test switch or multiplexing's switch
To the sub-pixel of same color, therefore it is able in test process by the voltage quasi position setting test signal respectively, and writes institute
The grey decision-making being intended to is in corresponding sub-pixel, thus allows display floater provide desired picture.Thereby, be able to multiplexer framework with
With DC test news source, display floater is tested in the case of dot structure is unmatched.
Although the present invention is open as above with aforesaid embodiment, but it is not limited to the present invention.Without departing from this
In bright spirit and scope, the change done and amendment, all belong to the scope of patent protection of the present invention.Defined about the present invention
Protection domain refer to appending claims.
Claims (10)
1. a pixel-driving circuit a, it is adaptable to display floater, and this display floater includes multiple pixel, this pixel bag each
Including one first sub-pixel, one second sub-pixel and one the 3rd sub-pixel, this pixel-driving circuit includes:
Multiple multiplexers, this multiplexer each has an input, two outfans and one and controls end, and this two outfan is respectively coupled to
Wherein the two of those sub-pixels, this control end is in order to receive multiplexing's control signal, and this multiplexer each is in order to many according to this
This input is conducting to one of them of this two outfan by industry control signal-selectivity ground；And
Multiple test switches, one end of this test each switch couples one of them of a plurality of test holding wire, this test each
The other end of switch couples this input of wherein this multiplexer, and the control end of this test each switch is in order to receive a test
Control signal, this test each switch is in order to this test signal that optionally will couple according to this test control signal received
Line is conducted to this input of this multiplexer coupled；
Wherein, the voltage quasi position of the test signal on this test holding wire each is definite value, and the son that this multiplexer each couples
Pixel is defined as the sub-pixel of same polarity.
2. pixel-driving circuit as claimed in claim 1, it is characterised in that the polarity of this sub-pixel each and adjacent another
The opposite polarity of this sub-pixel, and the polarity of those sub-pixels that couples of this multiplexer each and another adjacent this multiplexer coupling
The opposite polarity of those sub-pixels connect.
3. pixel-driving circuit as claimed in claim 1, it is characterised in that be coupled to this pixel same via those multiplexers
Those test switch couple identical test holding wire.
4. pixel-driving circuit as claimed in claim 1, it is characterised in that one of them of those multiplexers couple this two
The light that sub-pixel sends has identical color.
5. pixel-driving circuit as claimed in claim 1, it is characterised in that one of them of those multiplexers couple this two
The light that sub-pixel sends has different colors.
6. a pixel-driving circuit a, it is adaptable to display floater, this display floater is made with low temperature polycrystalline silicon processing procedure, and this shows
Showing that panel includes that multiple pixel, this pixel each have M sub-pixel, this pixel-driving circuit includes:
Multiple multiplexers, this multiplexer each has an input, N number of outfan and one and controls end, and this outfan each couples
One of them of those sub-pixels, this control end is in order to receive multiplexing's control signal, and this multiplexer each is in order to many according to this
One of them of those sub-pixels being conducted to this input to couple industry control signal-selectivity；And
Multiple test switches, one end of this test each switch couples one of them of a plurality of test holding wire, this test each
The other end of switch couples this input of wherein this multiplexer, and the control end of this test each switch is in order to receive a test
Control signal, this test each switch is in order to this test signal that optionally will couple according to this test control signal received
Line is conducted to this input of this multiplexer coupled；
Wherein, on this test holding wire each test signal voltage quasi position be definite value, this multiplexer each couple those
Sub-pixel is defined as the sub-pixel of same polarity, and the light that those sub-pixels of coupling of this multiplexer each are sent is homochromy
Temperature, M Yu N is positive integer, and N is less than M, and N does not divide exactly M.
7. pixel-driving circuit as claimed in claim 6, it is characterised in that the polarity of this sub-pixel each and adjacent another
The opposite polarity of this sub-pixel, and the polarity of those sub-pixels that couples of this multiplexer each and another adjacent this multiplexer coupling
The opposite polarity of those sub-pixels connect.
8. pixel-driving circuit as claimed in claim 6, it is characterised in that be coupled to this pixel same via those multiplexers
Those test switch couple identical test holding wire.
9. pixel-driving circuit as claimed in claim 6, it is characterised in that one of them of those multiplexers couple this two
The light that sub-pixel sends has identical color.
10. pixel-driving circuit as claimed in claim 6, it is characterised in that what one of them of those multiplexers coupled should
The light that two sub-pixels send has different colors.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105111945A TWI576812B (en) | 2016-04-15 | 2016-04-15 | Pixel driving circuit |
| TW105111945 | 2016-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106205441A true CN106205441A (en) | 2016-12-07 |
| CN106205441B CN106205441B (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610553177.3A Active CN106205441B (en) | 2016-04-15 | 2016-07-14 | Pixel driving circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106205441B (en) |
| TW (1) | TWI576812B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI680394B (en) * | 2018-10-16 | 2019-12-21 | 友達光電股份有限公司 | Voltage level shifter cirucit and display panel driving control method |
| TWI770633B (en) * | 2020-10-14 | 2022-07-11 | 友達光電股份有限公司 | Display device |
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| US20010024183A1 (en) * | 1997-10-06 | 2001-09-27 | Yukihide Ode | Liquid crystal display device |
| CN1547731A (en) * | 2002-03-29 | 2004-11-17 | ���µ�����ҵ��ʽ���� | Liquid crystal display device |
| US20080259016A1 (en) * | 2006-10-17 | 2008-10-23 | Yukio Tanaka | Liquid crystal display device |
| CN102542973A (en) * | 2011-11-18 | 2012-07-04 | 友达光电股份有限公司 | Display panel, multiplexer circuit therein and signal transmission method |
| CN104992651A (en) * | 2015-07-24 | 2015-10-21 | 上海和辉光电有限公司 | AMOLED panel test circuit |
| CN105185332A (en) * | 2015-09-08 | 2015-12-23 | 深圳市华星光电技术有限公司 | Liquid crystal display panel, driving circuit thereof and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050206597A1 (en) * | 2004-02-10 | 2005-09-22 | Seiko Epson Corporation | Electro-optical device, method for driving electro-optical device, driving circuit, and electronic apparatus |
| US7633495B2 (en) * | 2006-02-14 | 2009-12-15 | Tpo Displays Corp. | Driving circuit with low power consumption multiplexer and a display panel and an electronic device using the same |
| TW200945310A (en) * | 2008-04-29 | 2009-11-01 | Au Optronics Corp | Driving unit |
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- 2016-07-14 CN CN201610553177.3A patent/CN106205441B/en active Active
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| US20010024183A1 (en) * | 1997-10-06 | 2001-09-27 | Yukihide Ode | Liquid crystal display device |
| CN1547731A (en) * | 2002-03-29 | 2004-11-17 | ���µ�����ҵ��ʽ���� | Liquid crystal display device |
| US20080259016A1 (en) * | 2006-10-17 | 2008-10-23 | Yukio Tanaka | Liquid crystal display device |
| CN102542973A (en) * | 2011-11-18 | 2012-07-04 | 友达光电股份有限公司 | Display panel, multiplexer circuit therein and signal transmission method |
| CN104992651A (en) * | 2015-07-24 | 2015-10-21 | 上海和辉光电有限公司 | AMOLED panel test circuit |
| CN105185332A (en) * | 2015-09-08 | 2015-12-23 | 深圳市华星光电技术有限公司 | Liquid crystal display panel, driving circuit thereof and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI576812B (en) | 2017-04-01 |
| CN106205441B (en) | 2019-12-24 |
| TW201737229A (en) | 2017-10-16 |
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