CN104766579A - Signal output circuit, display panel and display device - Google Patents
Signal output circuit, display panel and display device Download PDFInfo
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- CN104766579A CN104766579A CN201510184706.2A CN201510184706A CN104766579A CN 104766579 A CN104766579 A CN 104766579A CN 201510184706 A CN201510184706 A CN 201510184706A CN 104766579 A CN104766579 A CN 104766579A
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Abstract
The invention relates to the technical field of display, in particular to a signal output circuit, a display panel and a display device. The signal output circuit comprises a signal collecting circuit and a signal compensation circuit, wherein the signal collecting circuit is used for collecting work electric signals when triggering signals are effective levels, and the signal compensation circuit is used for superposing compensation electric signals and originally-input electric signals of a first data line after the compensation electric signals are determined and inputting the superposed electric signals into the first data line. According to the signal output circuit, the display panel and the display device, due to the fact that the compensation electric signals can be superposed to the originally-input electric signals of the data line by the signal collecting circuit, compensation of attenuation of the work electric signals in the data line is achieved, and thus the difference of the brightness of output end areas of the data line in the display panel is reduced.
Description
Technical field
The present invention relates to display technique field, particularly a kind of signal output apparatus, display panel and display device.
Background technology
Along with the progress of display technique, the favor that TFT LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor (TFT) liquid crystal display) is high with its contrast, stereovision is strong, brightly painted feature is more and more subject to people.
But, due to the increase of TFT LCD size of display panels in prior art, load on the data line of viewing area is increased, and for meeting the high-resolution performance of display panel, the design that usual employing data line is separated extends the time of charging, the work electric signal of output terminal P1 or P2 of data line in viewing area is as shown in Figure 1 caused to be decayed larger, and the degree varies phasing of decay is same, therefore easily causes the brightness of the output end region of data line in display panel to occur notable difference.
Summary of the invention
The invention provides a kind of signal output apparatus, display panel and display device, the problem that the brightness causing viewing area to occur comparatively greatly in order to the work electric signal decay solving the output terminal of data line in prior art TFT LCD display panel is inconsistent, with improving picture quality.
Embodiments provide a kind of signal output apparatus, signal acquisition circuit and signal compensation circuit;
Wherein, described signal acquisition circuit, for when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area;
Described signal compensation circuit, for determining the original input electrical signal of described first data line, and according to described original input electrical signal and described work electric signal, after being compensated electric signal, described compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.
Signal acquisition circuit due to the embodiment of the present invention can gather the work electric signal of the first data line, signal compensation circuit can be compensated electric signal according to the work electric signal gathered and original input electrical signal, and can compensation electric signal be added on the original input electrical signal of the first data line, thus the work electric signal in the first data line is decayed obtain compensation, and then reduce the otherness of brightness of the first data line output end region in display panel.
Optionally, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gather the work electric signal of described first data line in viewing area by the second data line in virtual pixel;
Wherein, described second data line connects the preset signals acquisition node in described signal acquisition circuit and described first data line.
Owing to can be gathered the work electric signal of the first data line by the second data line in virtual pixel, simplify the technical scheme of the work electric signal of collection first data line, thus make this technical scheme be easier to realize.
Optionally, one end of described second data line is connected with the pin of described signal acquisition circuit, and the other end is connected with the preset signals acquisition node in described first data line.
Optionally, a pin of described signal acquisition circuit is connected with described second data line, and a described preset signals acquisition node is connected with described second data line.
Optionally, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gathered the work electric signal of first data line in viewing area by the second data line of in virtual pixel;
Wherein, described first data line is first data line nearest with described second data line.
Owing to can be gathered the work electric signal of first data line by second data line, simplify technical scheme, and the first data line used due to signal acquisition circuit collecting work electric signal is first data line nearest with the second data line, thus make the work electric signal that collects comparatively accurate.
Optionally, described signal acquisition circuit gathers the second data line that described work electric signal uses is the second data line nearest with the first data line in viewing area in virtual pixel.
The second data line used due to signal acquisition circuit collecting work electric signal is second data line nearest with the first data line in viewing area, make the work electric signal that collects comparatively accurate, thus make the effect of the luminance compensation of the output end region of data line in display panel better.
Optionally, preset signals acquisition node is the output terminal of raw electrical signal.
Because preset signals acquisition node is the output terminal of raw electrical signal, and the work electric signal that this node collects is maximum with original input electrical signal phase specific damping, work electric signal according to this place compensates original input electrical signal, makes to avoid because work electric signal is decayed the problem that the display brightness of the output end region of the first data line is poor in the display panel caused.
Optionally, described signal compensation circuit, specifically for:
After the significant level of trigger pip changes, determine the original input electrical signal of described first data line, and at the work electric signal according to described original input electrical signal and described collection, after being compensated electric signal, the original input electrical signal of described compensation electric signal with described first data line is superposed, the electric signal after superposition is input in described first data line.
Optionally, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gather the working signal of the first data in viewing area corresponding to described signal acquisition circuit;
Described signal compensation circuit, specifically for:
After the significant level of trigger pip changes, determine the original input signal of the first data line in the viewing area corresponding with described signal acquisition circuit, and at the work electric signal according to described original input electrical signal and described collection, be compensated electric signal, the original input electrical signal of described compensation electric signal with described first data line is superposed, the electric signal after superposition is input in described first data line in viewing area corresponding to described signal acquisition circuit;
Wherein, the viewing area that described signal acquisition circuit is corresponding is the viewing area at the first data line place be connected with described signal acquisition circuit.
Due to when display panel comprises multiple viewing area, by the work electric signal of the corresponding viewing area of collection signal Acquisition Circuit, and be compensated electric signal according to work electric signal and original input electrical signal, compensate according to the original input electrical signal of compensation electric signal to the first data line of corresponding viewing area, make to be compensated electric signal comparatively accurate, thus make the effect that compensates better, and then reduce the otherness of brightness of the first data line output end region in display panel.
Optionally, described preset signals acquisition node is the output terminal of original input electrical signal.
Optionally, described signal compensation circuit also for:
After described compensation electric signal changes, the compensation electric signal after changing is superposed with the described original input electrical signal of described first data line respectively, obtains new electric signal;
New electric signal is input in corresponding described first data line.
Because compensation electric signal is change, according to the compensation electric signal after change, original signal is compensated, more accurate after making the telecommunications after the superposition inputted, thus improve the display effect of display panel.
Optionally, described first data line has many.
Optionally, described signal compensation circuit comprises: anti-phase computing circuit in proportion, the first superimposed signal circuit and secondary signal supercircuit;
Wherein, described anti-phase computing circuit is in proportion used for carrying out reverse computing to described work electric signal, obtains negative work electric signal;
Described first superimposed signal circuit, for being superposed with described original input electrical signal by described negative work electric signal, is compensated electric signal;
Described secondary signal supercircuit, for being superposed with the original input electrical signal of described first data line respectively by described compensation electric signal, and is input to the electric signal after superposition in the first corresponding data line.
Because signal compensation circuit in the embodiment of the present invention is made up of anti-phase computing circuit in proportion, the first superimposed signal circuit, secondary signal supercircuit, thus signal compensation circuit is made more to be easy to realize.
Optionally, described anti-phase computing circuit in proportion, comprising: the first electric capacity, the first resistance, the second electric capacity, the second resistance, operational amplifier;
Described first electric capacity one end is connected with one end of described first resistance, the other end of described first resistance, one end of described second resistance are connected with the inverting input of described operational amplifier, the in-phase input end of described operational amplifier is connected with one end of described second electric capacity, the other end of described second electric capacity is connected with earth terminal, and the output terminal of described operational amplifier is connected with the other end of described second resistance;
Wherein, described operational amplifier is used for carrying out anti-phase computing to the work electric signal of input, obtains negative work electric signal.
Optionally, described signal acquisition circuit and described signal compensation circuit are arranged in integrated circuit (IC).
Because signal acquisition circuit and signal compensation circuit are arranged in IC, thus it is integrated that circuit is easier to.
The invention process additionally provides a kind of display panel, comprises the above-mentioned signal output apparatus that the embodiment of the present invention provides.
The embodiment of the present invention additionally provides a kind of display device, comprises the above-mentioned display panel that the embodiment of the present invention provides.
Accompanying drawing explanation
Fig. 1 is the structural representation of display panel in background technology;
Fig. 2 is the schematic diagram of embodiment of the present invention signal output apparatus;
Fig. 3 (a) for embodiment of the present invention trigger pip be the schematic diagram of high level;
Fig. 3 (b) for embodiment of the present invention trigger pip be low level schematic diagram;
Fig. 4 is the connection diagram of the embodiment of the present invention first data line and the second data line;
Fig. 5 is the connection diagram of the embodiment of the present invention first data line and the second data line;
Fig. 6 is the connection diagram of the embodiment of the present invention first data line and the second data line;
Fig. 7 is the connection diagram of the embodiment of the present invention first data line and the second data line;
Fig. 8 is embodiment of the present invention signal compensation circuit principle schematic;
Fig. 9 is the embodiment of the present invention anti-phase computing circuit in proportion schematic diagram.
Embodiment
The signal output apparatus of the embodiment of the present invention comprises signal acquisition circuit and signal compensation circuit; Wherein, signal acquisition circuit, for when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area; Signal compensation circuit, for determining the original input electrical signal of the first data line, and according to original input electrical signal and work electric signal, after being compensated electric signal, compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.This technical scheme can gather the work electric signal of the first data line due to the signal acquisition circuit of the embodiment of the present invention, signal compensation circuit can be compensated electric signal according to the work electric signal gathered and original input electrical signal, and can compensation electric signal be added on the original input electrical signal of the first data line, thus make the decay of the work electric signal in the first data line obtain compensation, and then reduce the otherness of brightness of the first data line output end region in display panel, to promote the quality of display frame.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As shown in Figure 2, the embodiment of the present invention one signal output apparatus, comprising:
Signal acquisition circuit 200, for when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area;
Signal compensation circuit 201, for determining the original input electrical signal of the first data line, and according to original input electrical signal and work electric signal, after being compensated electric signal, compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.
It should be noted that, provided by IC for the trigger pip of trigger pip Acquisition Circuit 200 in the embodiment of the present invention.
Wherein the significant level of trigger pip can be high level, also can be low level.
When the significant level of trigger pip is high level, as shown in Fig. 3 (a), its signal acquisition circuit 200 is when receiving the rising edge of trigger pip, the switch opens of signal acquisition circuit 200, gather the work electric signal of at least one first data line in viewing area, when receiving the negative edge of trigger pip, the switch of signal acquisition circuit 200 cuts out, and no longer carries out the collection of work electric signal.Wherein, the duration between the rising edge of trigger pip and negative edge, namely the duration of high level is effective duration of trigger pip.
When the significant level of trigger pip is low level, as shown in Fig. 3 (b), its signal acquisition circuit 200 is when receiving the negative edge of trigger pip, the switch opens of signal acquisition circuit 200, gather the work electric signal of at least one first data line in viewing area, when receiving the rising edge of trigger pip, the switch of signal acquisition circuit 200 cuts out, and no longer carries out the collection of work electric signal.Wherein, the duration between the negative edge of trigger pip and rising edge, namely low level duration is effective duration of trigger pip.
Therefore, as shown in Fig. 3 (a) or Fig. 3 (b).
Wherein, signal acquisition circuit 200, signal compensation circuit 201 are arranged in integrated circuit (IC), and integrated circuit (IC) is arranged in covers brilliant film.
It should be noted that, the first data line in the viewing area of the embodiment of the present invention has many, and the first data line that the work electric signal gathered by signal acquisition circuit 200 is used is at least one.
When trigger pip is significant level, the switch opens of signal acquisition circuit 200, gathers the work electric signal of at least one first data line in viewing area, when not changing at the significant level of trigger pip, the switch of signal acquisition circuit 200 cuts out, and no longer carries out the collection of work electric signal.
Wherein, the viewing area of the embodiment of the present invention may have one, also may have multiple.
As shown in Figure 4, there is the situation of the viewing area of the embodiment of the present invention, when only having a viewing area, and a corresponding signal output apparatus, namely corresponding one covers brilliant film, and wherein signal output apparatus comprises signal acquisition circuit 200 and signal compensation circuit 201.
As shown in Figure 5, there is multiple situations the viewing area of the embodiment of the present invention, when there being multiple viewing area, and the corresponding signal output apparatus in each viewing area;
The optional mode of one of its signals collecting and compensation is:
Signal acquisition circuit 200, when trigger pip is significant level, the working signal of the first data in the viewing area that collection signal Acquisition Circuit is corresponding;
Wherein, the viewing area that signal acquisition circuit is corresponding is the viewing area at the first data line place be connected with signal acquisition circuit.
In addition, the first data line in the viewing area of the embodiment of the present invention has many, the first data line that the work electric signal gathered by signal acquisition circuit 200 is used is at least one, the first data line compensated by signal compensation circuit 201 can be many, also can be one, can also according to actual conditions need optionally the first data line is compensated, the wherein corresponding original input electrical signal of every root first data line.
The embodiment of the present invention gathers the work electric signal of the first data line, a kind of optional mode is that optional mode has: gather the work electric signal on the work electric signal of the multiple preset signals acquisition nodes on the first data line or random acquisition first data line, from multiple work electric signal, choose minimum work electric signal be input to signal compensation circuit 201, or the mean value of the work electric signal calculating multiple position is input to signal compensation circuit 201.
It should be noted that, the mode of signal acquisition circuit collecting work electric signal is not limited to gather the mode of electric signal that the work electric signal of multiple preset signals acquisition node or random acquisition first data line work, as long as can collect the mode of the work electric signal on the first data line.
After collecting multiple work electric signal, multiple work electric signal is processed, work electric signal after process is input in signal compensation circuit 201, such as: from multiple work electric signal, choose minimum work electric signal be input to signal compensation circuit 201, or the mean value calculating multiple work electric signal is input to signal compensation circuit 201.
Wherein, preset signals acquisition node carries out setting according to the needs of actual conditions.
In addition, the embodiment of the present invention additionally provides a kind of work electric signal mode of optional collection first data line: preset signals acquisition node is the output terminal of original input electrical signal, as the P1 point in Fig. 4, or P1 point as shown in Figure 5; If gather the work electric signal of P1 point of first data line, then direct this work electric signal is input in signal compensation circuit; If gather the work electric signal of the P1 point of many first data lines, then from the work electric signal of all collections, choose minimum work electric signal be input in signal compensation circuit.
When preset signals acquisition node is the output terminal of original input electrical signal, then without the need to gathering the work electric signal of other preset signals acquisition nodes on ability the first data line, this is due on first data line, the work electric signal of this position is minimum, namely in first data line, the electric signal decay of this position is maximum, therefore according to the work electric signal of this position, original input electrical signal is compensated, the effect reached after making compensation is best, and only gather the work electric signal of this position, simplify technical scheme, be easier to realize.
For ease of the collection of the electric signal that works, a kind of method embodiments providing optional collecting work electric signal is:
Signal acquisition circuit 200, when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area by the second data line in virtual pixel;
Wherein, the preset signals acquisition node in the second data line connection signal Acquisition Circuit and the first data line.
In addition, the embodiment of the present invention additionally provides a kind of optionally by the mode of preset signals acquisition node in the second data line connection signal Acquisition Circuit and the first data line:
One end of second data line is connected with the pin of signal acquisition circuit, and the other end is connected with the preset signals acquisition node in the first data line.
Wherein, in embodiments of the present invention, a pin of described signal acquisition circuit is connected with described second data line, and a described preset signals acquisition node is connected with described second data line.
Specifically, when only having a viewing area, be described for Fig. 4, second data line 400 is connected with the pin P of signal acquisition circuit by outside line (fanout line) 402, the other end is connected with the preset signals acquisition node P1 of the first data line 401, when trigger pip is significant level, signal acquisition circuit 200 gathers the work electric signal of the first data line 401 preset signals acquisition node P1 by the second data line 400.
When viewing area is multiple, be described for first data line corresponding with covering brilliant film 1 in Fig. 5, the second data line.
Second data line 500 one end is connected with pin (Pin) P of signal acquisition circuit 200 by outside line (fanout line) 504, the other end is connected with the preset signals acquisition node P1 of the first data line 502, second data line 501 one end is connected with the pin P ＇ of signal acquisition circuit 200 by fanout line 505, and the other end is connected with the first data line 503 preset signals acquisition node P1 ＇.
When trigger pip is significant level, signal acquisition circuit 200 gathers the work electric signal of the first data line 502 preset signals acquisition node P1 by the second data line 500, the acquisition mode of work electric signal of P1 ＇ and the acquisition mode of the deamplification of P1 similar, do not repeat them here.
It should be noted that, when P1 point is positioned at other positions of the first data line 502, be connected with corresponding position by the second data line 500, its acquisition mode is constant, does not repeat them here.When the work electric signal of work electric signal or more root first data line of collection three first data lines, as long as the second data line not being used for collecting work electric signal is connected respectively with the first data line that needs gather, its connected mode and aforesaid way similar, do not repeat them here.
Because the second data line is connected by wire with the preset signals acquisition node of the first data line, and when the second data line and the first data line distant time, also the decay of signal can be produced, cause the error of the work electric signal collected larger, for reducing this error, embodiments provide a kind of optional connected mode:
When trigger pip is significant level, gathered the work electric signal of first data line in viewing area by the second data line of in virtual pixel;
Wherein, described first data line is first data line nearest with described second data line.
Specifically, be described for the first data line in viewing area corresponding with covering brilliant film 1 in Fig. 6 and the second data line.
In figure 6, first data line nearest with the second data line 600 is the first data line 601, then be connected with the pin P of signal acquisition circuit 200 by outside line 602 one end of the second data line 600, the other end is connected with the preset signals acquisition node P1 of the first data line 601.
Embodiments of the invention are that the work electric signal making further to gather is more accurate, additionally provide a kind of mode of optional collecting work electric signal:
When signal acquisition circuit is when trigger pip is significant level, the work electric signal of first data line is gathered by second data line, and the first data line that signal acquisition circuit collecting work electric signal uses is when being with the first data line that the second data line is nearest, the second data line that signal acquisition circuit collecting work electric signal uses is second data line nearest with the first data line in viewing area.
Wherein, as shown in Figure 7, when the second data line be connected with the first data line 601 preset signals acquisition node P1 is second data line 700 nearest with the first data line in viewing area, its first data line and the second data line nearest, the work electric signal collected is the most accurate, wherein, the second data line 700 is connected with the pin P of signal acquisition circuit by outside line 701.
After collecting work electric signal, the work electric signal collected is input in signal compensation circuit 201, signal compensation circuit 201 compensates original input signal according to the work electric signal gathered and original input signal, and the embodiment of the present invention additionally provides a kind of mode of optional compensation:
Signal compensation circuit 201, after the significant level of trigger pip changes, determine the original input electrical signal of the first data line, and at the work electric signal according to original input electrical signal and collection, after being compensated electric signal, compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.
Being example according to the first data line in the viewing area corresponding with covering brilliant film 1 in Fig. 7 and the second data line, being described the electric signal after superposition is input in the first corresponding data line.
If the original input signal of the first data line 601 is V1, electric signal after superposition is V1 ＇, then V1 ＇ is input in the first data line 601, if the original input signal of the first data line 702 is V2, electric signal after superposition is V2 ＇, then be input to by V2 ＇ in the first data line 702, the mode electric signal after superposition being input to the first data line 703, first data line 704 is similar with the mode being input to the first data line 601 and the first data line 702, does not repeat them here.
Wherein, the original input signal of the first data line 601, first data line 702, first data line 703, first data line 704 can be identical, also can be different.Such as, when the colour picture of display panel display and brightness is different time, the original input signal of the first data line 601, first data line 702, first data line 703, first data line 704 may be different, but when display panel display be brightness identical Blank pictures time, the original input signal of the first data line 601, first data line 702, first data line 703, first data line 704 is identical.
Because trigger pip is that periodicity gathers the work electric signal of the first data line in the embodiment of the present invention, when the work electric signal of the first data line changes, the compensation electric signal that signal compensation circuit obtains according to original input electrical signal and work electric signal also likely changes, when compensating electric signal and changing, a kind of optional technical scheme is:
Compensation electric signal after changing is superposed with the original input electrical signal of every root first data line respectively, obtains electric signal new after superposing;
New electric signal after superposition is input in the first corresponding data line.
With according to compensating electric signal, to compensate the process of original input electrical signal similar, for the first data line in the viewing area corresponding with covering brilliant film 1 in Fig. 7 and the second data line, be described the electric signal after superposition is input in the first corresponding data line.
If the original input signal of the first data line 601 is Va, compensation electric signal after superposition changes, obtaining new electric signal is Va ＇, then Va ＇ is input in the first data line 601, if the original input signal of the first data line 702 is Vb, compensation electric signal after superposition changes, obtaining new electric signal is Vb ＇, then Vb ＇ is input in the first data line 702, the mode new electric signal being input to respectively the first data line 703, first data line 704 is similar with the mode being input to the first data line 601 and the first data line 702, does not repeat them here.
In addition, for ease of realizing the compensation to original input signal, the embodiment of the present invention additionally provides a kind of concrete connected mode of signal compensation circuit, and as shown in Figure 8, the signal compensation circuit of the embodiment of the present invention comprises:
Anti-phase computing circuit in proportion 800, first superimposed signal circuit 801 and secondary signal supercircuit 802;
Wherein, anti-phase computing circuit in proportion 800, for carrying out reverse computing to work electric signal, obtains negative work electric signal;
First superimposed signal circuit 801, for being superposed with original input electrical signal by negative work electric signal, is compensated electric signal;
Secondary signal supercircuit 802, for being superposed with the original input electrical signal of every root first data line respectively by compensation electric signal, and is input to the electric signal after superposition in the first corresponding data line.
Wherein, the way of realization of the signal compensation circuit in the embodiment of the present invention is not limited to the way of realization of signal compensation circuit in Fig. 7, any original input electrical signal that can be used in realizing determining to be input to the first data line in the embodiment of the present invention, and according to original input electrical signal and work electric signal, after being compensated electric signal, compensation electric signal is superposed with the original input electrical signal of every root first data line respectively, and the electric signal after superposition is input to the circuit in the first corresponding data line.
For making the easier realization of the technical scheme of the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of anti-phase computing circuit in proportion, as shown in Figure 9: anti-phase computing circuit in proportion 800, comprising: the first electric capacity 900, first resistance 901, second electric capacity 902, second resistance 903, operational amplifier 904;
First electric capacity 900 one end is connected with one end of the first resistance 901, the other end of the first resistance 901, one end of the second resistance 903 are connected with the inverting input of operational amplifier 904, the in-phase input end of operational amplifier 904 is connected with one end of the second electric capacity 902, the other end of the second electric capacity 902 is connected with earth terminal, and the output terminal of operational amplifier 904 is connected with the other end of the second resistance 903;
Wherein, operational amplifier 904, for carrying out anti-phase computing to the work electric signal of input, obtains negative work electric signal.
It should be noted that, the way of realization of anti-phase computing circuit in proportion 800 of the present invention is not limited to the way of realization of anti-phase computing circuit on year-on-year basis in Fig. 9, the anti-phase circuit of any electric signal that can be used in realizing working in the embodiment of the present invention.
Based on same inventive concept, embodiments provide a kind of display panel, comprise the above-mentioned signal output apparatus that the embodiment of the present invention provides.The principle of dealing with problems due to this display panel is similar to above-mentioned signal output apparatus, and therefore the enforcement of this display panel see the enforcement of foregoing circuit, can repeat part and repeat no more.
Based on same inventive concept, embodiments provide a kind of display device, comprise the above-mentioned display panel that the embodiment of the present invention provides.This display device can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.The principle of dealing with problems due to this display device is similar to display panel, and therefore the enforcement of this display device see the enforcement of display panel, can repeat part and repeat no more.
It can be seen from the above: the signal output apparatus of the embodiment of the present invention comprises signal acquisition circuit and signal compensation circuit; Wherein, signal acquisition circuit, for when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area; Signal compensation circuit, for determining the original input electrical signal of the first data line, and according to original input electrical signal and work electric signal, after being compensated electric signal, compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.This technical scheme can gather the work electric signal of the first data line due to the signal acquisition circuit of the embodiment of the present invention, signal compensation circuit can be compensated electric signal according to the work electric signal gathered and original input electrical signal, and can compensation electric signal be added on the original input electrical signal of the first data line, thus the work electric signal in the first data line is decayed obtain compensation, and then reduce the otherness of brightness of the first data line output end region in display panel.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (16)
1. a signal output apparatus, is characterized in that, this circuit comprises: signal acquisition circuit and signal compensation circuit;
Wherein, described signal acquisition circuit, for when trigger pip is significant level, gathers the work electric signal of the first data line in viewing area;
Described signal compensation circuit, for determining the original input electrical signal of described first data line, and according to described original input electrical signal and described work electric signal, after being compensated electric signal, described compensation electric signal is superposed with the original input electrical signal of the first data line, the electric signal after superposition is input in the first data line.
2. circuit as claimed in claim 1, is characterized in that, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gather the work electric signal of described first data line in viewing area by the second data line in virtual pixel;
Wherein, described second data line connects the preset signals acquisition node in described signal acquisition circuit and described first data line.
3. circuit as claimed in claim 2, it is characterized in that, one end of described second data line is connected with the pin of described signal acquisition circuit, and the other end is connected with the preset signals acquisition node in described first data line.
4. circuit as claimed in claim 3, it is characterized in that, a pin of described signal acquisition circuit is connected with described second data line, and a described preset signals acquisition node is connected with described second data line.
5. circuit as claimed in claim 4, is characterized in that, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gathered the work electric signal of first data line in viewing area by the second data line of in virtual pixel;
Wherein, described first data line is first data line nearest with described second data line.
6. circuit as claimed in claim 5, is characterized in that, it is the second data line nearest with the first data line in viewing area in virtual pixel that described signal acquisition circuit gathers the second data line that described work electric signal uses.
7. the circuit as described in as arbitrary in claim 2 ~ 6, is characterized in that, described signal compensation circuit, specifically for:
After the significant level of trigger pip changes, determine the original input electrical signal of described first data line, and at the work electric signal according to described original input electrical signal and described collection, after being compensated electric signal, the original input electrical signal of described compensation electric signal with described first data line is superposed, the electric signal after superposition is input in described first data line.
8. the circuit as described in as arbitrary in claim 2 ~ 6, is characterized in that, described signal acquisition circuit, specifically for:
When trigger pip is significant level, gather the working signal of the first data in viewing area corresponding to described signal acquisition circuit;
Described signal compensation circuit, specifically for:
After the significant level of trigger pip changes, determine the original input signal of the first data line in the viewing area corresponding with described signal acquisition circuit, and at the work electric signal according to described original input electrical signal and described collection, be compensated electric signal, the original input electrical signal of described compensation electric signal with described first data line is superposed, the electric signal after superposition is input in described first data line in viewing area corresponding to described signal acquisition circuit;
Wherein, the viewing area that described signal acquisition circuit is corresponding is the viewing area at the first data line place be connected with described signal acquisition circuit.
9. the circuit as described in as arbitrary in claim 2 ~ 6, it is characterized in that, described preset signals acquisition node is the output terminal of original input electrical signal.
10. circuit as claimed in claim 1, is characterized in that, described signal compensation circuit also for:
After described compensation electric signal changes, the compensation electric signal after changing is superposed with the described original input electrical signal of described first data line respectively, obtains new electric signal;
New electric signal is input in corresponding described first data line.
11. circuit as claimed in claim 9, it is characterized in that, described first data line has many.
12. circuit as claimed in claim 1, it is characterized in that, described signal compensation circuit comprises: anti-phase computing circuit in proportion, the first superimposed signal circuit and secondary signal supercircuit;
Wherein, described anti-phase computing circuit is in proportion used for carrying out reverse computing to described work electric signal, obtains negative work electric signal;
Described first superimposed signal circuit, for being superposed with described original input electrical signal by described negative work electric signal, is compensated electric signal;
Described secondary signal supercircuit, for being superposed with the original input electrical signal of described first data line respectively by described compensation electric signal, and is input to the electric signal after superposition in the first corresponding data line.
13. circuit as claimed in claim 12, is characterized in that, described anti-phase computing circuit in proportion, comprising: the first electric capacity, the first resistance, the second electric capacity, the second resistance, operational amplifier;
Described first electric capacity one end is connected with one end of described first resistance, the other end of described first resistance, one end of described second resistance are connected with the inverting input of described operational amplifier, the in-phase input end of described operational amplifier is connected with one end of described second electric capacity, the other end of described second electric capacity is connected with earth terminal, and the output terminal of described operational amplifier is connected with the other end of described second resistance;
Wherein, described operational amplifier is used for carrying out anti-phase computing to the work electric signal of input, obtains negative work electric signal.
14. circuit as claimed in claim 1, it is characterized in that, described signal acquisition circuit and described signal compensation circuit are arranged in integrated circuit (IC).
15. 1 kinds of display panels, is characterized in that, comprising: as 1 ~ 14 arbitrary as described in circuit.
16. 1 kinds of display device, is characterized in that, comprising: the display panel as shown in claim 15.
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