CN102622967B - Organic light-emitting diode display and running method thereof - Google Patents
Organic light-emitting diode display and running method thereof Download PDFInfo
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Abstract
The invention relates to an organic light-emitting display and a running method thereof. The organic light-emitting diode display comprises an organic light emitting diode display panel and a driving circuit, wherein the organic light-emitting diode display panel is provided with a plurality of pixels; the driving circuit is coupled with the organic light-emitting display and is used for receiving an original display picture; and the driving circuit is used for generating a first picture which corresponds to the original display picture and a second picture which is adjacent to the first picture in a polarity reversing way, and outputting zero-gray-scale picture element voltage to these corresponding picture elements in the organic light emitting diode display panel corresponding to negative polarity data in the first picture and the second picture. Due to the adoption of the method, aging of the organic light-emitting diode can be slowed down, and the service life of the organic light-emitting diode is prolonged.
Description
Technical field
The invention relates to a kind of display and How It Works thereof, and relate to especially a kind of organic light emitting diode display and How It Works thereof.
Background technology
In recent years, the development of plane display technique is constantly weeded out the old and bring forth the new, wherein Organic Light Emitting Diode (organic light-emitting diode, OLED) display, there is power saving, ultrathin, lightweight, autoluminescence, without angle limitations, reaction velocity is fast, photoelectric efficiency is high, without advantages such as backing structure and colorful filter structure, high contrast, high briliancy efficiency, high brightness, polychrome and colour (RGB) establishment of component ability, serviceability temperature scope are wide, be considered to be and there is one of plane display technique of development potentiality future most.Therefore, in recent years, many display manufacturer drop into the exploitation of organic light emitting diode display one after another.
Because the type of drive of organic light emitting diode display is different from liquid crystal display (liquid crystal display, TFT-LCD), so that the exploitation of organic light emitting diode display must start anew, and then hinder the speed of organic light emitting diode display commercialization.In addition, organic LED display panel be by organic light-emitting diode packaging in machine plate, and Organic Light Emitting Diode can be aging along with service time, the display effect of organic LED display panel and serviceable life can be greatly affected.Therefore, how to slow down the aging important problem of design organic light emitting diode display that becomes of Organic Light Emitting Diode.
Summary of the invention
The invention provides a kind of organic light emitting display and How It Works thereof, it can slow down the aging of OLED, and is extended with the serviceable life of OLED.
The present invention proposes a kind of organic light emitting diode display, comprises organic LED display panel and driving circuit.Organic LED display panel has multiple picture elements.Driving circuit couples organic electroluminescence display panel and receives original display picture.Driving circuit produces one first picture of corresponding original display picture and one second picture adjacent to the first picture in reversal of poles mode, and negative polarity data in corresponding the first picture and in the second picture are exported zero GTG pixel voltages to these corresponding picture elements in organic LED display panel.
In one embodiment of this invention, driving circuit comprises Image Segmentation unit, source electrode driver and time schedule controller.Image Segmentation unit receives original display picture, and produce the first picture and the second picture in reversal of poles mode, and after being replaced with zero luma data respectively, the negative polarity data in the first picture and in the second picture export the second picture after the first picture and the adjustment after adjusting.Source electrode driver, couples organic LED display panel.Time schedule controller couples Image Segmentation unit and source electrode driver, and the second picture after the first picture and adjustment after reception is adjusted, zero luma data of the first picture after the corresponding adjustment of time schedule controller control source electrode driver and the second picture after adjustment is exported zero GTG pixel voltages to organic LED display panel.
In one embodiment of this invention, driving circuit comprises time schedule controller, image replacement unit and source electrode driver.Time schedule controller receives original display picture, and produces the first picture and the second picture in reversal of poles mode.Image replacement unit couples time schedule controller, and receives the first picture and the second picture, and exports the second picture after the first picture and the adjustment after adjusting after the negative polarity data in the first picture and in the second picture are replaced with zero luma data respectively.Source electrode driver couples time schedule controller, image replacement unit and organic LED display panel, and receives the second picture after the first picture and the adjustment after adjusting.Source electrode driver is controlled by zero luma data of the first picture after the corresponding adjustment of time schedule controller and the second picture after adjustment and exports zero GTG pixel voltages to organic LED display panel.
In one embodiment of this invention, driving circuit comprises time schedule controller, gamma voltage generator and source electrode driver.Time schedule controller receives original display picture, and produces the first picture and the second picture in reversal of poles mode.Gamma voltage generator, in order to produce multiple positive gamma voltages and multiple negative gamma voltage, wherein these negative gamma voltages are set as corresponding zero GTG pixel voltages.Source electrode driver couples time schedule controller, gamma voltage generator and organic LED display panel.Source electrode driver is controlled by the negative polarity data of time schedule controller and corresponding the first picture of gamma voltage generator and the second picture and exports zero GTG pixel voltages to organic LED display panel.
In one embodiment of this invention, organic LED display panel has more multi-strip scanning line, many data lines, and each picture element couples respectively corresponding sweep trace and corresponding data line.
In one embodiment of this invention, these picture elements comprise respectively the first transistor, transistor seconds, storage capacitors, Organic Light Emitting Diode and the 3rd transistor.The first transistor has the first source electrode, the first drain and the first gate, the first source electrode and the first drain wherein one couple corresponding data line, the first gate couples corresponding sweep trace.Transistor seconds has the second source electrode, the second drain and the second gate, one of them coupling system voltage of the second source electrode and the second drain, the second gate couple the first source electrode and the first drain wherein another.Storage capacitors is coupled between the second gate and the second source electrode.The anode of Organic Light Emitting Diode couple the second source electrode and the second drain wherein another, the negative electrode of Organic Light Emitting Diode couples ground voltage.The 3rd transistor has the 3rd source electrode, the 3rd drain and the 3rd gate, the 3rd source electrode and the 3rd drain are coupled with respectively anode and the negative electrode of OLED, the 3rd gate reception control signal, with when the corresponding negative polarity data of each picture element, the 3rd transistor of each picture element is conducting.
In one embodiment of this invention, control signal transmits for corresponding data line positive pixel voltages or zero GTG pixel voltages.
In one embodiment of this invention, the first transistor and transistor seconds are respectively P transistor npn npn, and the 3rd transistor is N-type transistor.
In one embodiment of this invention, the first transistor and transistor seconds are respectively N-type transistor, and the 3rd transistor is P transistor npn npn.
In one embodiment of this invention, the first picture and the second picture are complementary in data polarity.
The present invention also proposes a kind of How It Works of organic light emitting display, comprises the following steps.Receive original display picture.The first picture and the second picture that produce corresponding original display picture in reversal of poles mode, wherein the first picture is adjacent to the second picture.Negative polarity data in corresponding the first picture and in the second picture are exported zero GTG pixel voltages to corresponding part in multiple picture elements in organic LED display panel.
In one embodiment of this invention, the negative polarity data in corresponding the first picture and in the second picture are exported zero GTG pixel voltages to the step of part corresponding in these picture elements in organic LED display panel and are comprised: after the negative polarity data in the first picture and in the second picture are replaced with one zero luma data respectively first picture of output after adjusting and adjust after the second picture; Zero luma data of the second picture after the first picture and adjustment after corresponding adjustment is exported zero GTG pixel voltages to organic LED display panel.
In one embodiment of this invention, negative polarity data in corresponding the first picture and in the second picture are exported zero GTG pixel voltages to the step of part corresponding in these picture elements in organic LED display panel and are comprised: multiple positive gamma voltages and multiple negative gamma voltage are provided, and wherein these negative gamma voltages are set as corresponding zero GTG pixel voltages; According to these negative gamma voltages, export zero GTG pixel voltages to organic LED display panel with the negative polarity data of corresponding the first picture and the second picture.
Based on above-mentioned, the organic light emitting display of the embodiment of the present invention and How It Works thereof, driving circuit can produce the first picture and the second picture according to original display picture and in reversal of poles mode, and the part of driving circuit negative polarity data in corresponding the first picture and the second picture is exported zero GTG pixel voltages to picture element corresponding in organic LED display panel, and the Organic Light Emitting Diode in picture element is had a rest and slowed down aging situation by this.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Figure 1A is the system schematic according to the organic light emitting diode display of one embodiment of the invention.
Figure 1B processes schematic diagram according to the picture of one embodiment of the invention.
Fig. 2 A is the system schematic according to the driving circuit of one embodiment of the invention.
Fig. 2 B processes schematic diagram according to the picture of one embodiment of the invention.
Fig. 3 is the system schematic according to the driving circuit of another embodiment of the present invention.
Fig. 4 is the system schematic according to the driving circuit of yet another embodiment of the invention.
Fig. 5 is the circuit diagram according to the organic LED display panel of one embodiment of the invention.
Fig. 6 is the circuit diagram according to the organic LED display panel of another embodiment of the present invention.
Fig. 7 is the process flow diagram according to the How It Works of the organic light emitting diode display of one embodiment of the invention.
[primary clustering symbol description]
-: negative polarity data
+: positive polarity data
0: zero luma data
100,100a, 100b, 100c: organic light emitting diode display
110,110a, 110b, 110c: driving circuit
120,120a, 120b: organic LED display panel
210: Image Segmentation unit
220,310,410: time schedule controller
230,330,430: gate pole driver
240,340,440: source electrode driver
320: image replacement unit
420: gamma voltage generator
510: sweep trace
520: data line
C1, C2: storage capacitors
DF1, DF2: image
LD1, LD2: Organic Light Emitting Diode
M1 ~ M6: transistor
NVG: negative gamma voltage
ODF: original display picture
OF1: the first picture
OF1 ': the first picture after adjustment
OF2: the second picture
OF2 ': the second picture after adjustment
PPV: positive pixel voltages
PV0: zero GTG pixel voltages
PVG: positive gamma voltage
PX, PX ': picture element
SC: sweep signal
VC1, VC2: control signal
VDD: system voltage
S710, S720, S730: step.
Embodiment
Figure 1A is the system schematic according to the organic light emitting diode display of one embodiment of the invention.Please refer to Figure 1A, in the present embodiment, organic light emitting diode display 100 comprises driving circuit 110 and organic LED display panel 120.Driving circuit 110 couples organic LED display panel 120, and receives original display picture ODF, to export positive pixel voltages PPV and zero GTG pixel voltages PV0 according to original display picture ODF to organic LED display panel 120.Wherein, positive pixel voltages PPV is in order to drive the partial pixel (not illustrating) of organic LED display panel 120 to show corresponding part in original display picture ODF, and zero GTG pixel voltages PV0 stops luminous in order to the partial pixel (not illustrating) of controlling organic LED display panel 120, be equal to demonstration black, so that Organic Light Emitting Diode is had a rest and slowed down aging situation.
Figure 1B processes schematic diagram according to the picture of one embodiment of the invention.Please refer to Figure 1A and Figure 1B, in the present embodiment, driving circuit 110 is receiving after original display picture ODF, can produce the first picture OF1 of corresponding original display picture ODF and adjacent to the second picture OF2 of the first picture OF1, that is the first picture OF1 and the second picture OF2 be in order to demonstration in succession.Wherein, driving circuit 110 can produce the first picture OF1 and the second picture OF2 in reversal of poles mode, so that can have respectively multiple positive polarity data "+" and multiple negative polarity data "-" in the first picture OF1 and the second picture OF2.And the first picture OF1 and the second picture OF2 can be complementary state on data polarity, that is are the place of positive polarity data "+" at the first picture OF1, can be negative polarity data "-" at the second picture OF2.Wherein, reversal of poles mode is in the present embodiment take an inversion mode as example, but can be row reversion or row reversion at other embodiment, and the embodiment of the present invention is not as limit.
Then, the part of positive polarity data "+" in corresponding the first picture OF1 and the second picture OF2, driving circuit 110 can be exported positive pixel voltages PPV accordingly to organic LED display panel 120, so that corresponding the first picture OF1 of the partial pixel of organic LED display panel 120 (not illustrating) and the second picture OF2 and show image.The part of negative polarity data "-" in corresponding the first picture OF1 and the second picture OF2, driving circuit 110 can be exported zero GTG pixel voltages PV0 to organic LED display panel 120, so that the partial pixel of organic LED display panel 120 (not illustrating) stops is luminous, that is show black.
Due to the first picture OF1 and the second picture OF2, meeting on data polarity is complementary state, therefore the shown image DF2's of the shown image DF1 of corresponding the first picture OF1 of organic LED display panel 120 and corresponding the second picture OF2 is synthetic identical with original display picture ODF, therefore can not affect the display effect to image, and can make the picture element (not illustrating) of organic LED display panel 120 have the time of having a rest.
In one embodiment, in organic light emitting diode display 100 showing when tableaux, because received original display picture ODF can be identical, therefore in the time that two original display picture ODF are identical, driving circuit 110 can produce the first picture OF1 and the second picture OF2 of corresponding single original display picture ODF, and can not affect shown image.On the other hand, in organic light emitting diode display 100 showing when dynamic menu, because received original display picture ODF can be different, now driving circuit 110 can produce the first picture OF1 and the second picture OF2 of corresponding single original display picture ODF, so that the corresponding original display picture of organic LED display panel 120 ODF show image.
Fig. 2 A is the system schematic according to the driving circuit of one embodiment of the invention.Fig. 2 B processes schematic diagram according to the picture of one embodiment of the invention.Please refer to Figure 1A, Figure 1B, Fig. 2 A and Fig. 2 B, in the present embodiment, the driving circuit 110a of organic light emitting diode display 100a comprises Image Segmentation unit 210, time schedule controller 220, gate pole driver 230 and source electrode driver 240.Image Segmentation unit 210 receives original display picture ODF, and produces the first picture OF1 and the second picture OF2 in reversal of poles mode.Then, the first picture OF1 ' and the second picture OF2 ' after adjusting exported after the negative polarity data "-" in the first picture OF1 and in the second picture OF2 is replaced with zero luma data " 0 " in Image Segmentation unit 210.
Fig. 3 is the system schematic according to the driving circuit of another embodiment of the present invention.Please refer to Figure 1A, Figure 1B, Fig. 2 B and Fig. 3, in the present embodiment, the driving circuit 110b of organic light emitting diode display 100b comprises time schedule controller 310, image replacement unit 320, gate pole driver 330 and source electrode driver 340.Time schedule controller 310 receives original display picture ODF, and produces the first picture OF1 and the second picture OF2 in reversal of poles mode.Image replacement unit 320 couples time schedule controller 310, and receive the first picture OF1 and the second picture OF2, and the first picture OF1 ' and the second picture OF2 ' after output adjustment after the negative polarity data "-" in the first picture OF1 and in the second picture OF2 is replaced with zero luma data " 0 ".
Fig. 4 is the system schematic according to the driving circuit of yet another embodiment of the invention.Please refer to Figure 1A, Figure 1B and Fig. 4, in the present embodiment, the driving circuit 110c of organic light emitting diode display 100c comprises time schedule controller 410, gamma voltage generator 420, gate pole driver 430 and source electrode driver 440.Time schedule controller 410 receives original display picture ODF, and produces the first picture OF1 and the second picture OF2 in reversal of poles mode.Gamma voltage generator 420 is in order to produce multiple positive gamma voltage PVG and multiple negative gamma voltage NVG, and wherein these negative gamma voltage NVG are set to corresponding zero GTG pixel voltages PV0.
One of them of these positive gamma voltage PVG that the positive polarity exponent number that source electrode driver 440 is controlled by corresponding the first picture OF1 of time schedule controller 410 and the second picture OF2 is exported gamma voltage generator 420 according to "+" exports organic LED display panel 120 to as positive pixel voltage PPV.And, source electrode driver 440 be controlled by these negative gamma voltage NVG that the negative polarity data "-" of corresponding the first picture OF1 of time schedule controller 410 and the second picture OF2 export gamma voltage generator 420 one of them export organic LED display panel 120 to.Because these negative gamma voltage NVG are set to corresponding zero GTG pixel voltages PV0 by gamma voltage generator 440, the negative polarity data "-" that therefore source electrode driver 440 is controlled by time schedule controller 410 and corresponding the first picture OF1 of gamma voltage generator 440 and the second picture OF2 exports zero GTG pixel voltages PV0 to organic LED display panel 120.
According to above-mentioned, the driving circuit (as time schedule controller, gate pole driver and source drive) that the embodiment of the present invention is corresponding liquid crystal display is revised the data of the picture being received, or type of drive that can corresponding organic LED display panel 120 and adjust positive gamma voltage or the negative gamma voltage that gamma voltage generator produces, so that the driving circuit of liquid crystal display can, in order to drive organic LED display panel 120, can reduce the exhibition of driving circuit and send out cost by this.Because the embodiment of the present invention is to utilize the driving circuit of liquid crystal display to drive organic LED display panel 120, therefore all technology that are applied to liquid crystal display all can be applicable in the embodiment of the present invention, to improve the display quality of organic light emitting diode display (as 100,100a ~ 100c) of the embodiment of the present invention.
Fig. 5 is the circuit diagram according to the organic LED display panel of one embodiment of the invention.Please refer to Fig. 5, in the present embodiment, organic LED display panel 120a has multiple picture elements (illustrating single picture element PX at this is example), multi-strip scanning line 510, many data lines 520, and each picture element (as PX) couples respectively corresponding sweep trace 510 and data line 520, wherein sweep trace 510 is in order to receive sweep signal SC as shown in Fig. 2 A, Fig. 3 and Fig. 4, and data line 520 is in order to receive positive pixel voltage PPV and zero GTG pixel voltages PV0 as shown in Figure 1A, Fig. 2 A, Fig. 3 and Fig. 4.
In the present embodiment, each picture element PX comprises respectively transistor M1, M2, M3, storage capacitors C1 and Organic Light Emitting Diode LD1, and wherein transistor M1, M2 are N-type transistor, and transistor M3 is P transistor npn npn.The drain (corresponding the first drain) of transistor M1 couples corresponding data line 520, and the gate (corresponding the first gate) of transistor M1 couples corresponding sweep trace 510.Drain (corresponding the second drain) the coupling system voltage VDD of transistor M2, the gate (corresponding the second gate) of transistor M2 couples the source electrode (corresponding the first source electrode) of transistor M1.Storage capacitors C1 is coupled between the gate and source electrode (corresponding the second source electrode) of transistor M2.The anode of Organic Light Emitting Diode LD1 couples the source electrode of transistor M2, and the negative electrode of Organic Light Emitting Diode LD1 couples ground voltage.The source electrode (corresponding the 3rd source electrode) of transistor M3 is coupled with the anode of OLED LD1, the drain (corresponding the 3rd drain) of transistor M3 is coupled with the negative electrode of OLED LD1, the gate of transistor M3 couples corresponding data line 520, using positive pixel voltage PPV that data line 520 is received and zero GTG pixel voltages PV0 as its control signal VC1.
When transistor M1 is controlled by sweep signal SC and when conducting, the positive pixel voltage PPV that data line 520 receives or zero GTG pixel voltages PV0 can be sent to the gate of transistor M2, and storage capacitors C1 can store received positive pixel voltage PPV or zero GTG pixel voltages PV0.Wherein, in this zero GTG pixel voltages, PV0 can be low-voltage (as ground voltage), and positive pixel voltage PPV can be the voltage that is greater than the critical voltage of transistor M2.
When storage capacitors C1 is that while storing positive pixel voltage PPV, transistor M2 can be controlled by positive pixel voltage PPV and conducting, and the conducting degree of transistor M2 can be proportional to the voltage of positive pixel voltage PPV.Now, Organic Light Emitting Diode LD1 can receive electric current and luminous, and can corresponding positive pixel voltage PPV and show corresponding brightness (being GTG value).And transistor M3 can be controlled by positive pixel voltage PPV and not conducting or conducting degree are too low.
On the other hand, when storage capacitors C1 is for storing when zero GTG pixel voltages PV0, transistor M2 can be controlled by zero GTG pixel voltages PV0 and make the too low or not conducting of conducting degree.Now, Organic Light Emitting Diode LD1 can be regarded as not luminous, that is shows black, but between the anode of Organic Light Emitting Diode LD1 and negative electrode, still has cross-pressure.And transistor M3 can be controlled by zero GTG pixel voltages PV0 and conducting, so that the cross-pressure of Organic Light Emitting Diode LD1 can see through the transistor M3 of conducting and reduces or disappear, therefore can slow down the aging of Organic Light Emitting Diode LD1.
According to above-described embodiment (as Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B, Fig. 3 and Fig. 4 institute teaching), zero GTG pixel voltages PV0 is that the negative polarity data "-" in corresponding the first picture OF1 and in the second picture OF2 are exported, therefore the transistor M3 of each picture element PX can corresponding the first picture OF1 in and negative polarity data "-" in the second picture OF2 and conducting.
In the present embodiment, the gate of transistor M3 couples corresponding data line 520, and the positive pixel voltage PPV that therefore can be received using data line 520 or zero GTG pixel voltages PV0 are as the control signal VC1 of transistor M3.But in other embodiments, the gate of transistor M3 can be coupled to extra control circuit (not illustrating) or signal processing circuit (not illustrating), to receive corresponding control signal VC1, and negative polarity data "-" in corresponding the first picture OF1 and in the second picture OF2 and conducting according to corresponding control signal VC1.Wherein, transistor M3 can corresponding control signal VC1 activation level (that is voltage quasi position of negative polarity data "-" in corresponding the first picture OF1 and in the second picture OF2) and replace with P transistor npn npn or N-type transistor, that is in the time that activation level is high levle, transistor M3 can replace with N-type transistor, in the time that activation level is low level, transistor M3 can replace with P transistor npn npn.
Fig. 6 is the circuit diagram according to the organic LED display panel of another embodiment of the present invention.Please refer to Fig. 5 and Fig. 6, in the present embodiment, the structural similarity of organic LED display panel 120b is in the structure of organic LED display panel 120a, and its difference is the circuit of picture element PX '.
In the present embodiment, each picture element PX ' comprises respectively transistor M4, M5, M6, storage capacitors C2 and Organic Light Emitting Diode LD2, and wherein transistor M4, M5 are P transistor npn npn, and transistor M6 is N-type transistor.The source electrode (corresponding the first source electrode) of transistor M4 couples corresponding data line 520, and the gate (corresponding the first gate) of transistor M4 couples corresponding sweep trace 510.Source electrode (corresponding the second source electrode) the coupling system voltage VDD of transistor M5, the gate (corresponding the second gate) of transistor M5 couples the drain (corresponding the first drain) of transistor M4.Storage capacitors C2 is coupled between the gate and drain (corresponding the second drain) of transistor M5.The anode of Organic Light Emitting Diode LD2 couples the drain of transistor M5, and the negative electrode of Organic Light Emitting Diode LD2 couples ground voltage.The drain (corresponding the 3rd drain) of transistor M6 is coupled with the anode of OLED LD2, the source electrode (corresponding the 3rd source electrode) of transistor M6 is coupled with the negative electrode of OLED LD2, the gate of transistor M6 couples corresponding data line 520, using positive pixel voltage PPV that data line 520 is received and zero GTG pixel voltages PV0 as its control signal VC2.
When transistor M4 is controlled by sweep signal SC and when conducting, the positive pixel voltage PPV that data line 520 receives or zero GTG pixel voltages PV0 can be sent to the gate of transistor M5, and storage capacitors C2 can store received positive pixel voltage PPV or zero GTG pixel voltages PV0.Wherein, in this zero GTG pixel voltages, PV0 can be high voltage (as system voltage), and positive pixel voltage PPV can be the voltage that is less than the critical voltage of transistor M5.
When storage capacitors C2 is that while storing positive pixel voltage PPV, transistor M5 can be controlled by positive pixel voltage PPV and conducting, and the conducting degree of transistor M5 can be inversely proportional to the voltage of positive pixel voltage PPV.Now, Organic Light Emitting Diode LD2 can receive electric current and luminous, and can corresponding positive pixel voltage PPV and show corresponding brightness (being GTG value).And transistor M6 can be controlled by positive pixel voltage PPV and not conducting or conducting degree are too low.
On the other hand, when storage capacitors C2 is for storing when zero GTG pixel voltages PV0, transistor M5 can be controlled by zero GTG pixel voltages PV0 and make the too low or not conducting of conducting degree.Now, Organic Light Emitting Diode LD2 can be regarded as not luminous, that is shows black, but between the anode of Organic Light Emitting Diode LD2 and negative electrode, still has cross-pressure.And transistor M6 can be controlled by zero GTG pixel voltages PV0 and conducting, so that the cross-pressure of Organic Light Emitting Diode LD2 can see through the transistor M6 of conducting and reduces or disappear, therefore can slow down the aging of Organic Light Emitting Diode LD2.
Fig. 7 is the process flow diagram according to the How It Works of the organic light emitting diode display of one embodiment of the invention.Please refer to Fig. 7, in the present embodiment, the How It Works of organic light emitting diode display comprises the following steps.Receive original display picture (step S710), and produce the first picture and second picture of corresponding original display picture in reversal of poles mode, wherein the first picture is adjacent to the second picture (step S720).Then, the negative polarity data in corresponding the first picture and in the second picture are exported zero GTG pixel voltages to corresponding part (step S730) in multiple picture elements in organic LED display panel.Wherein, the details of above-mentioned steps can, with reference to Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B, Fig. 3 and embodiment illustrated in fig. 4, repeat no more at this.
In sum, the organic light emitting display of the embodiment of the present invention and How It Works thereof, driving circuit can produce the first picture and the second picture according to original display picture and in reversal of poles mode, and the part of driving circuit negative polarity data in corresponding the first picture and the second picture is exported zero GTG pixel voltages to picture element corresponding in organic LED display panel, so that the pixel of organic LED display panel stops is luminous, the Organic Light Emitting Diode in picture element is had a rest and is slowed down aging situation by this.And, can in picture element, configure the transistor that is parallel with OLED, so that transistor receives zero GTG pixel voltages when corresponding negative polarity data (that is) conducting at corresponding picture element, can reduce or eliminate by this cross-pressure of organic invention diode.Moreover, the embodiment of the present invention is revised the data of the picture that institute driving circuit receives or driving circuit is adjusted for seeing through, so that the driving circuit of liquid crystal display can, in order to drive organic LED display panel, can reduce the development cost of driving circuit by this.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; under any, in technical field, have and conventionally know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (13)
1. an organic light emitting diode display, is characterized in that, comprising:
One organic LED display panel, has multiple pixels; And
One drive circuit, couple this organic electroluminescence display panel and receive an original display picture, this driving circuit produces to one first picture that should original display picture and adjacent to one second picture of this first picture in a reversal of poles mode, and to the negative polarity data output one zero GTG pixel voltages in should the first picture and in this second picture to those corresponding pixels in this organic LED display panel.
2. organic light emitting diode display according to claim 1, is characterized in that, wherein this driving circuit comprises:
One Image Segmentation unit, receive this original display picture, and produce this first picture and this second picture in this reversal of poles mode, and after being replaced with one zero luma data respectively, the negative polarity data in this first picture and in this second picture export this second picture after this first picture and the adjustment after adjusting;
One source pole driver, couples this organic LED display panel; And
Time schedule controller, couple this Image Segmentation unit and this source electrode driver, and this second picture after this first picture and adjustment after reception is adjusted, this zero luma data of this first picture after the corresponding adjustment of this source electrode driver of this time schedule controller control and this second picture after adjustment is exported this zero GTG pixel voltage to this organic LED display panel.
3. organic light emitting diode display according to claim 1, is characterized in that, wherein this driving circuit comprises:
Time schedule controller, receives this original display picture, and produces this first picture and this second picture in this reversal of poles mode;
One image replacement unit, couple this time schedule controller, and receive this first picture and this second picture, and after being replaced with one zero luma data respectively, the negative polarity data in this first picture and in this second picture export this second picture after this first picture and the adjustment after adjusting; And
One source pole driver, couple this time schedule controller, this image replacement unit and this organic LED display panel, and this second picture after this first picture and adjustment after reception is adjusted, this source electrode driver is controlled by this zero luma data of this first picture after the corresponding adjustment of this time schedule controller and this second picture after adjustment and exports this zero GTG pixel voltage to this organic LED display panel.
4. organic light emitting diode display according to claim 1, is characterized in that, wherein this driving circuit comprises:
Time schedule controller, receives this original display picture, and produces this first picture and this second picture in this reversal of poles mode;
One gamma voltage generator, in order to produce multiple positive gamma voltages and multiple negative gamma voltage, wherein those negative gamma voltages are set as should zero GTG pixel voltage; And
One source pole driver, couple this time schedule controller, this gamma voltage generator and this organic LED display panel, this source electrode driver be controlled by time schedule controller and this gamma voltage generator to should the first picture and this second picture in negative polarity data export this zero GTG pixel voltage to this organic LED display panel.
5. organic light emitting diode display according to claim 1, is characterized in that, wherein this organic LED display panel has more multi-strip scanning line, many data lines, and respectively those pixels couple respectively corresponding sweep trace and corresponding data line.
6. organic light emitting diode display according to claim 5, is characterized in that, wherein those pixels comprise respectively:
One the first transistor, has one first source electrode, one first drain electrode and a first grid, and one of them of this first source electrode and this first drain electrode couples corresponding data line, and this first grid couples corresponding sweep trace;
One transistor seconds, has one second source electrode, one second drain electrode and a second grid, and one of them of this second source electrode and this second drain electrode couples a system voltage, this second grid couple this first source electrode and this first drain electrode wherein another;
One storage capacitors, is coupled between this second grid and this second source electrode;
One Organic Light Emitting Diode, its anode couple this second source electrode and this second drain electrode wherein another, its negative electrode couples a ground voltage; And
One the 3rd transistor, there is one the 3rd source electrode, one the 3rd drain electrode and one the 3rd grid, the 3rd source electrode and the 3rd drain electrode couple respectively anode and the negative electrode of this Organic Light Emitting Diode, the 3rd grid receives a control signal, with when the corresponding negative polarity data of each those pixels, respectively the 3rd transistor of those pixels is conducting.
7. organic light emitting diode display according to claim 6, is characterized in that, a positive pixel voltage or this zero GTG pixel voltage that wherein this control signal transmits for corresponding data line.
8. organic light emitting diode display according to claim 7, is characterized in that, wherein this first transistor and this transistor seconds are respectively a P transistor npn npn, and the 3rd transistor is a N-type transistor.
9. organic light emitting diode display according to claim 7, is characterized in that, wherein this first transistor and this transistor seconds are respectively a N-type transistor, and the 3rd transistor is a P transistor npn npn.
10. organic light emitting diode display according to claim 1, is characterized in that, wherein this first picture and this second picture are complementary in data polarity.
The How It Works of 11. 1 kinds of organic light emitting display, is characterized in that, comprising:
Receive an original display picture;
Produce one first picture and one second picture that should original display picture in a reversal of poles mode, this first picture is adjacent to this second picture; And
To corresponding part in multiple pixels of negative polarity data output one zero GTG pixel voltage to organic LED display panels in should the first picture and in this second picture.
The How It Works of 12. organic light emitting display according to claim 11, it is characterized in that, wherein the negative polarity data in should the first picture and in this second picture are exported to this zero GTG pixel voltage to the step of part corresponding in those pixels of this organic LED display panel and comprise:
This first picture after negative polarity data in this first picture and in this second picture are replaced with one zero luma data respectively after output adjustment and this second picture after adjustment; And
This zero luma data of this second picture after this first picture and adjustment after corresponding adjustment is exported this zero GTG pixel voltage to this organic LED display panel.
The How It Works of 13. organic light emitting display according to claim 11, it is characterized in that, wherein the negative polarity data in should the first picture and in this second picture are exported to this zero GTG pixel voltage to the step of part corresponding in those pixels of this organic LED display panel and comprise:
Multiple positive gamma voltages and multiple negative gamma voltage are provided, and wherein those negative gamma voltages are set as should zero GTG pixel voltage; And
According to those negative gamma voltages, with to should the first picture and the negative polarity data of this second picture export this zero GTG pixel voltage to this organic LED display panel.
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| KR102141885B1 (en) * | 2013-12-31 | 2020-08-06 | 엘지디스플레이 주식회사 | Display and method of driving the same |
| CN104009187A (en) * | 2014-05-29 | 2014-08-27 | 四川虹视显示技术有限公司 | Multicolor organic light emitting diode lighting (OLED) device |
| CN104851400B (en) * | 2015-05-21 | 2018-01-09 | 深圳市华星光电技术有限公司 | Display device and its driving method |
| CN109686313B (en) * | 2019-01-10 | 2021-06-18 | 昆山国显光电有限公司 | Pixel circuit, display panel and driving method of pixel circuit |
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| CN1797525A (en) * | 2004-12-31 | 2006-07-05 | 三星电子株式会社 | Display device and driving method thereof |
| CN101174382A (en) * | 2006-10-31 | 2008-05-07 | Lg.菲利浦Lcd株式会社 | Organic light emitting diode display and driving method thereof |
| CN102254511A (en) * | 2010-05-17 | 2011-11-23 | 乐金显示有限公司 | Organic electroluminescent display device and method of driving the same |
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| CN1797525A (en) * | 2004-12-31 | 2006-07-05 | 三星电子株式会社 | Display device and driving method thereof |
| CN101174382A (en) * | 2006-10-31 | 2008-05-07 | Lg.菲利浦Lcd株式会社 | Organic light emitting diode display and driving method thereof |
| CN102254511A (en) * | 2010-05-17 | 2011-11-23 | 乐金显示有限公司 | Organic electroluminescent display device and method of driving the same |
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