CN112017592A - Organic light emitting display device - Google Patents
Organic light emitting display device Download PDFInfo
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- CN112017592A CN112017592A CN202010893004.2A CN202010893004A CN112017592A CN 112017592 A CN112017592 A CN 112017592A CN 202010893004 A CN202010893004 A CN 202010893004A CN 112017592 A CN112017592 A CN 112017592A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention provides an organic light-emitting display device, which comprises a grid electrode driving circuit, a pixel compensation driving circuit, a light-emitting unit connected with the pixel compensation driving circuit and a trigger driving circuit for outputting a control signal to the corresponding pixel compensation driving circuit, wherein the grid electrode driving circuit outputs a grid electrode signal to the corresponding trigger driving circuit; the grid driving circuit comprises N-level grid driving units, grid signals output by the (N-1) th-level grid driving unit are connected to the nth-level grid driving unit, the trigger driving circuit comprises N-level trigger driving units, and control signals output by the (m-1) th-level trigger driving unit are connected to the mth-level trigger driving unit. The trigger driving circuit can realize the control signal required by the pixel compensation driving circuit, further compensate poor display caused by TFT characteristic deviation, control the light emitting time of the light emitting unit, further adjust the brightness and the gray scale of the organic light emitting display device and realize the dimming function of the organic light emitting display device.
Description
Technical Field
The invention relates to the field of display, in particular to an organic light-emitting display device.
Background
An Organic Light Emitting Diode (OLED) display panel has many advantages of self-luminescence, low driving voltage, high luminous efficiency, short response time, high definition and contrast, a viewing angle of nearly 180 degrees, a wide range of use temperature, and capability of realizing flexible display and large-area full-color display, and is considered as a display device having the most potential for development in the industry.
OLEDs can be classified into two broad categories, namely, direct addressing and Thin Film Transistor (TFT) Matrix addressing, which are Passive Matrix OLEDs (PM) and Active Matrix OLEDs (AM) according to driving methods. The AMOLED display panel is internally provided with a plurality of pixels which are arranged in an array mode, and each pixel is driven through an OLED pixel compensation driving circuit.
As shown in fig. 1, the conventional AMOLED pixel compensation driving circuit has a 2T1C structure, and includes: a switching thin film transistor T1, a second driving thin film transistor T2, and a storage capacitor Cst. When the switching thin film transistor T1 is turned on by receiving a scan line (Gate) command, a Data line (Data) voltage signal is transmitted to the storage capacitor Cst and a switching command is issued to the second driving thin film transistor T2, at this time, the drain of the second driving thin film transistor T2 is connected to the high potential VDD, the source of the second driving thin film transistor T2 is connected to the anode of the OLED, and when the second driving thin film transistor T2 is turned on, it drives the OLED to emit light current.
The conventional OLED pixel compensation driving circuit shown in fig. 1 is simple and can drive an OLED to emit light only, so that the phenomenon that the current of the OLED is unstable due to low driving current at low gray scale and the picture Mura defect is easily generated cannot be effectively avoided.
Disclosure of Invention
The invention provides an organic light emitting display device which can realize pixel compensation of a control signal required by a drive circuit and further compensate display defects caused by TFT characteristic deviation.
The invention provides an organic light-emitting display device, which comprises a grid drive circuit, scanning lines and data lines which are crisscrossed, a pixel compensation drive circuit positioned at the intersection limit of the scanning lines and the data lines, a light-emitting unit connected with the pixel compensation drive circuit and a trigger drive circuit for outputting a control signal to the corresponding pixel compensation drive circuit, wherein the grid drive circuit outputs a grid signal to the corresponding trigger drive circuit; the grid driving circuit comprises N-level grid driving units, grid signals output by the (N-1) th-level grid driving unit are connected to the nth-level grid driving unit, the trigger driving circuit comprises N-level trigger driving units, control signals output by the (m-1) th-level trigger driving unit are connected to the mth-level trigger driving unit, and a high-voltage signal, a low-voltage signal, a clearing signal, a periodic signal, a brightness adjusting signal with periodic control and a clearing signal are arranged on the periphery of the trigger driving circuit; the m-level trigger drive comprises an up-down pull control unit (001), an up-pull module (002), a maintaining module (003), a down-pull module (004), an anti-creeping module (005), a first other module (006), a second other module (007), a third other module (008), a first control module (009) and a second control module (010); the pull-up and pull-down control unit, the pull-up module, the pull-down module, the first other module and the first control module are connected to the pull-up control node; the maintaining module, the pull-down module, the second other module and the second control module are connected to a maintaining control node, and the first control module and the second control module are connected with a grid signal of the nth-stage grid driving unit; the pull-up module, the pull-down module and the third other module output a control signal of the current stage, the anti-creeping module is connected with the control signal of the current stage, wherein N and m are positive integers, N is more than 1 and less than or equal to N, and m is more than 1 and less than or equal to N.
Furthermore, the up-down pull control unit (001) comprises a first control switch and a second control switch, a first path end of the first control switch is connected with the high-voltage signal, and a second path end of the first control switch is connected with a first path end of the second control switch; the control end of the second control switch is connected with the current-stage periodic signal, and the second path end of the second control switch is connected with the pull-up control node; when m is 1, the control end of a first control switch of the pull-up and pull-down control unit driven by the first-stage trigger is connected with a brightness adjusting signal; when m is larger than 1, the control end of the first control switch T1 is connected with the control signal output by the m-1 th stage trigger drive.
Furthermore, the pull-up module (002) includes a tenth control switch and a first capacitor, a control end of the tenth control switch is connected to the pull-up control node, a first path end of the tenth control switch is connected to the high voltage signal, a first plate of the first capacitor is connected to the pull-up control node, and a second path end of the tenth control switch and a second plate of the first capacitor output the control signal of the current stage.
Furthermore, the maintaining module (003) includes a third control switch, a fourth control switch, a fifth control switch and a second capacitor, wherein a first path end of the third control switch is connected to a control end of the fourth control switch and a second plate of the second capacitor, a second path end of the third control switch and a second path end of the fifth control switch are connected to a low voltage signal, a first path end of the fourth control switch and a first plate of the second capacitor are connected to a current-stage periodic signal, a second path end of the fourth control switch and a first path end of the fifth control switch are connected to a maintaining control node, a control end of the fifth control switch is connected to a pull-up control node, and a second path end of the fifth control switch is connected to a low voltage signal; when m is 1, the control end of a third control switch of the maintaining module driven by the first-stage trigger is connected with a brightness adjusting signal; when m is larger than 1, the control end of the third control switch is connected with the control signal output by the m-1 stage trigger drive.
Furthermore, the maintaining module (003) includes a third control switch, a fourth control switch, a fifth control switch and a second capacitor, wherein a first path end of the third control switch is connected to a control end of the fourth control switch and a second plate of the second capacitor, a second path end of the third control switch and a second path end of the fifth control switch are connected to a low voltage signal, a first path end of the fourth control switch and a first plate of the second capacitor are connected to a current-stage periodic signal, a second path end of the fourth control switch and a first path end of the fifth control switch are connected to a maintaining control node, and a second path end of the fifth control switch is connected to a low voltage signal; when m is equal to 1, the control end of a third control switch and the control end of a fifth control switch of the first-stage trigger-driven maintaining module are both connected with the brightness adjusting signal; when m is larger than 1, the control end of the third control switch and the control end of the fifth control switch are both connected with the control signal output by the m-1 th stage trigger drive.
Further, the pull-down module (004) includes a sixth control switch, a seventh control switch and an eighth control switch, a control end of the sixth control switch, a control end of the seventh control switch and a control end of the eighth control switch are all connected to the maintaining control node, a first path end of the sixth control switch is connected to the pull-up control node, a second path end of the sixth control switch is connected to the low-voltage signal, a first path end of the seventh control switch outputs the control signal of the current stage, a second path end of the seventh control switch is connected to a first path end of the eighth control switch, and a second path end of the eighth control switch is connected to the low-voltage signal.
Furthermore, the electricity leakage prevention module (005) comprises a ninth control switch, a control end of the ninth control switch is connected with the current-stage control signal, a first path end of the ninth control switch is connected with the high-voltage signal, and a second path end of the ninth control switch is connected with a first path end of an eighth control switch of the pull-down module.
Further, the first further module (006) comprises an eleventh control switch, the second further module (007) comprises a thirteenth control switch, and the third further module (008) comprises a twelfth control switch; the control end of the eleventh control switch, the control end of the twelfth control switch and the control end of the thirteenth control switch are all connected with the clearing signal, the first pass end of the eleventh control switch is connected with the pull-up control node, the first pass end of the thirteenth control switch is connected with the maintaining control node, the first pass end of the twelfth control switch outputs the control signal of the current stage, and the second pass end of the eleventh control switch, the second pass end of the twelfth control switch and the second pass end of the thirteenth control switch are all connected with the low-voltage signal.
Further, the first control module (009) includes a fourteenth control switch, the second control module (010) includes a fifteenth control switch, a control end of the fourteenth control switch and a control end of the fifteenth control switch are also connected to the gate signal of the nth stage gate driving unit, a first path end of the fourteenth control switch is connected to the high voltage signal, a first path end of the fifteenth control switch is connected to the low voltage signal, a second path end of the fourteenth control switch is connected to the pull-up control node of the sustain control node, and a second path end of the fifteenth control switch is connected to the pull-up control node of the sustain control node
The trigger driving circuit can realize the control signal required by the pixel compensation driving circuit, further compensate poor display caused by TFT characteristic deviation, control the light emitting time of the light emitting unit, further adjust the brightness and the gray scale of the organic light emitting display device and realize the dimming function of the organic light emitting display device.
Drawings
The present invention will be further described in the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic diagram of a conventional OLED pixel compensation driving circuit;
FIG. 2 is a schematic diagram of a pixel compensation driving circuit according to the present invention;
FIG. 3 is a waveform diagram of the pixel compensation driving circuit shown in FIG. 2;
FIG. 4 is a schematic diagram of the connection between the trigger driving circuit and the gate driving circuit according to the present invention;
FIG. 5 is a schematic diagram of an internal structure of the first embodiment of the trigger driving circuit shown in FIG. 4;
FIG. 6 is a waveform diagram of the trigger driving circuit shown in FIG. 5;
FIG. 7 is a diagram of analog signals for the trigger driving circuit of FIG. 5;
fig. 8 is a schematic diagram of an internal structure of the trigger driving circuit of fig. 4 according to a second embodiment.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
As shown in fig. 2 and 4, the present invention discloses an organic light emitting display device including a gate driving circuit 300 outputting a gate signal Gn (a gradation signal), criss-cross scan lines and data lines, a pixel compensation driving circuit 200 disposed at a boundary where the scan lines and the data lines cross, a light emitting cell (OLED)30 connected to the pixel compensation driving circuit 200, and a trigger driving circuit 100 outputting a control signal to the corresponding pixel compensation driving circuit 200, wherein the light emitting cell 30 is disposed between a first power source (the first power source is a positive power source having a voltage ELVDD) and a second power source (the second power source is a negative power source having a voltage ELVSS). The gate driving circuit 300 outputs a gate signal to the corresponding trigger driving circuit 100.
The trigger driving circuit 100 is matched with the pixel compensation driving circuit 200, the trigger driving circuit 100 is matched with the periodic signal CKE, the output gate signal Gn (level transfer signal) of the gate driving circuit 300, the high voltage signal VGH, the low voltage signal VGL and the DC direct current source signal, and the initial brightness adjusting signal PWM provided by the chip IC, so that a control signal (emission (en) for controlling each row of the trigger driving circuit 100 can be generated, further, the functions of the pixel compensation driving circuit 200 for compensating the TFT characteristic deviation and the aging of the light emitting unit 30 are realized, the phenomenon of uneven picture display is solved, and the purpose of improving the picture quality is achieved by controlling the light emitting time of the light emitting unit 30.
It should be noted that each of the thin film transistors according to the following embodiments includes a control terminal, a first via terminal, and a second via terminal, where the control terminal is a gate, one of the via terminals is a source, and the other via terminal is a drain. When the voltages received by the control end, the first path end and the second path end meet the conducting condition of the thin film transistor, the source electrode and the drain electrode are connected through the semiconductor layer, and the thin film transistor is in an opening state at the moment.
In this embodiment, as shown in fig. 3, the pixel compensation driving circuit 200 has a 6T1C structure, the pixel compensation driving circuit 200 includes N (N > 2, N is a positive integer) pixel compensation driving unit, the nth (1 ≦ N, N is a positive integer) pixel compensation driving unit includes a first driving thin film transistor M1, a second switching thin film transistor M2, a third switching thin film transistor M3, a fourth switching thin film transistor M4, a fifth switching thin film transistor M5, a sixth switching thin film transistor M6, a first storage capacitor C1, and an access point (PIX point for short), where the access point (PIX point for short) is located at an intersection of the second switching thin film transistor M2, the fifth switching thin film transistor M5, and the first storage capacitor C1.
Signals required by the nth stage (1 ≦ N, where N is a positive integer) pixel compensation driving unit are shown in fig. 3, and main control signals required by the nth stage (1 ≦ N, where N is a positive integer) pixel compensation driving unit include a second control signal Ey, a first control signal Ex, a third control signal Ez, a local gate signal Gn, and a reference signal Vref, where the second control signal Ey, the first control signal Ex, and the third control signal Ez may be a control signal En sent by the local trigger driving circuit 100, a control signal En-1 sent by the previous trigger driving circuit 100, a control signal En +1 sent by the next trigger driving circuit 100, or a control signal En-1/En +1 sent by the previous/current/next trigger driving circuit 100 and/En + 1.
The control end of the first driving thin film transistor M1 is a point G, and the point G is connected to the second plate of the first storage capacitor C1 and the first pass end of the fourth switching thin film transistor M4; the first pass end of the first driving thin film transistor M1 is point D, and point D is connected to the second pass end of the fourth switching thin film transistor M4 and the second pass end of the third switching thin film transistor M3; the second path terminal of the first driving thin film transistor M1 is point S, and point S is connected to the first path terminal of the sixth switching thin film transistor M6.
A control end of the second switching thin film transistor M2 is connected to the present row gate signal Gn, a first path end of the second switching thin film transistor M2 is connected to the data line, and a second path end of the second switching thin film transistor M2 is connected to an access point (abbreviated as PIX point); a control terminal of the third switching thin film transistor M3 is connected to the third control signal Ez, and a first path terminal of the third switching thin film transistor M3 is connected to the first power source ELVDD; the control end of the fourth switching thin film transistor M4 is connected with the grid signal Gn of the current row; a control end of the fifth switching thin film transistor M5 is connected to the second control signal Ey, a first path end of the control end of the fifth switching thin film transistor M5 is connected to the reference signal Vref, and a second path end of the fifth switching thin film transistor M5 is connected to an access point (abbreviated as PIX point); the control terminal of the sixth switching thin film transistor M6 is connected to the first control signal Ex, the second path terminal of the sixth switching thin film transistor M6 is connected to the anode of the light emitting cell 30, and the sixth switching thin film transistor M6 is inserted between the first driving thin film transistor M1 and the light emitting cell 30 to block the current flowing to the light emitting cell 30 in the non-light emitting period (excluding the compensation period).
The signals required by the pixel compensation driving circuit 200 are shown in fig. 3, and the main control signals required by the pixel compensation driving circuit 200 are the gate signal Gn of the gate driving circuit and the control signal En of the trigger driving circuit 100, wherein the pixel compensation driving circuit 200 is divided into four stages: the first phase (during T1) is the voltage reset of the access point and charges the control terminal of the first driving thin film transistor M1; the second phase (during T2) is that the control end of the first driving thin film transistor M1 carries out the extraction of the threshold voltage Vth and the writing of the data voltage Vdata into the PIX point phase; the third stage (during T3) is inputting the reference voltage Vref to the PIX point; the fourth phase (during T4) is a light emitting phase of the light emitting unit 30.
The pixel compensation driving circuit 200 requires the gate signal Gn of the gate driving circuit and the control signal En of the trigger driving circuit 100 to be matched with each other to achieve the circuit compensation effect.
As shown in fig. 4 and 5, the trigger driving circuit 100 of the present invention is configured such that the switching signal supplied to the control terminal of the sixth switching thin film transistor M6 is a light and dark control timing of the light emitting unit 30. The switching signal En-1 received by the sixth switching thin film transistor M6 may be a synchronous signal or an asynchronous signal, and its main function is to control the current received by the first pass terminal of the sixth switching thin film transistor M6 to be transmitted to the second pass terminal of the sixth switching thin film transistor M6, and at the same time, the second pass terminal of the sixth switching thin film transistor M6 is connected to the anode of the light emitting unit 30, so when the first driving thin film transistor M1 is turned on and the third switching thin film transistor M3 and the sixth switching thin film transistor M6 are also turned on, the light emitting unit 30 is driven to emit light, and the light emitting unit 30 emits light.
Fig. 4 and fig. 5 are schematic structural diagrams of a first embodiment of a circuit architecture in which the trigger driving circuit 100 adopts 15T2C, where the trigger driving circuit 100 includes N (N > 2, and N is a positive integer) stages of trigger driving units, a control signal Em-1 output by the m-1 stage of trigger driving unit is connected to the m-th stage of trigger driving unit, and m is greater than 1 and less than or equal to N; the gate driving circuit 300 also comprises N stages of gate driving units, wherein a gate signal Gn-1 output by the nth-1 stage of gate driving unit is connected to the nth stage of gate driving unit, wherein N is more than 1 and less than or equal to N; the gate signal Gn-1 of the nth stage gate driving unit is input to the mth stage trigger driving unit, where m and n may be the same or different, and m and n shown in fig. 5 are the same.
The m-th stage trigger driving unit is connected to the high voltage signal VGH, the low voltage signal VGL, the first periodic signal CKE1, the second periodic signal CKE3, the first periodic signal CKE1, the second periodic signal CKE3, the third periodic signal CKE3, the fourth periodic signal CKE4, the brightness adjusting signal PWM with period control, and the clear signal CLR.
The output of the control signal Em-1 outputted by the previous stage trigger driving unit is transmitted to the next stage trigger driving unit Em, and when the brightness adjusting signal PWM is inputted to the first stage trigger driving unit E1, the outputs of the different row trigger driving units are different by a time unit, and are sequentially transmitted, so as to drive the following pixel compensation driving circuit 200 for effectively and more finely controlling the different rows.
Fig. 4 is a schematic structural diagram of a first embodiment of the trigger driving circuit, in which a control signal Em-1 output by the m-1 th stage trigger driver is connected to the m-th stage trigger driver. When m is larger than 1, a high-voltage signal VGH, a low-voltage signal VGL, a current-stage periodic signal CKEn and a brightness adjusting signal PWM are arranged on the periphery of the m-th trigger driving unit, and the m-th trigger driving unit is connected to a control signal Em-1, a high-voltage signal VGH, a low-voltage signal VGL, a current-stage periodic signal CKEm, a brightness adjusting signal PWM with periodic control and an emptying signal CLR which are output by the m-1-th trigger driving unit; when n is 1, that is, the first stage trigger driving is connected to the luminance adjusting signal PWM, the high voltage signal VGH, the low voltage signal VGL, the present stage period signal CKEn, the luminance adjusting signal PWM with period control, and the clear signal CLRE.
The mth stage trigger driver adopts a circuit architecture of 15T2C, and includes an up-down pull control unit 001, an up-pull module 002, a sustain module 003, a down-pull module 004, an anti-creeping module 005, a first other module 006, a second other module 007, a third other module 008, a first control module 009, and a second control module 010. Wherein the up-down pulling control unit 001, the up-pulling module 002, the down-pulling module 004, the first other module 006 and the first control module 009 are connected to the up-pulling control node netAn; the sustain module 003, the pull-down module 004, the second other module 007 and the second control module 010 are connected to the sustain control node netBn, the third other module 008 is connected to the output terminal of the present stage trigger driving unit, the clear signal CLRE and the low voltage signal VGL, and the first control module 009 and the second control module 010 are connected to the gate signal Gn of the nth stage gate driving unit. The pull-up module 002, the pull-down module 004 and the third other module 008 output a current-level control signal Em, and the electricity leakage prevention module 005 is connected with the current-level control signal Em. Wherein n may be the same as or different from m.
The pull-up and pull-down control unit 001 comprises a first control switch T1 and a second control switch T2, wherein a control end of the first control switch T1 is connected with a control signal Em-1 output by the m-1 th-level trigger drive, a first pass end of the first control switch T1 is connected with a high-voltage signal VGH, and a second pass end of the first control switch T1 is connected with a first pass end of the second control switch T2; the control end of the second control switch T2 is connected to the current-stage periodic signal CKEm, and the second path end of the second control switch T2 is connected to the pull-up control node netAn. When m is 1, the control end of the first control switch T1 of the pull-up and pull-down control unit 001 which is triggered and driven by the first stage is connected with the brightness adjusting signal PWM; when m is more than 1, the control end of the first control switch T1 is connected with the control signal Em-1 output by the m-1 th stage trigger drive.
The pull-up module 002 includes a tenth control switch T10 and a first capacitor C1, a control end of the tenth control switch T10 is connected to the pull-up control node netAn, a first path end of the tenth control switch T10 is connected to the high voltage signal VGH, a first plate of the first capacitor C1 is connected to the pull-up control node netAn, and a second path end of the tenth control switch T10 and a second plate of the first capacitor C1 output the present-stage control signal Em.
The sustain module 003 is a 3T1C structure, and includes a third control switch T3, a fourth control switch T4, a fifth control switch T5, and a second capacitor C2. A control end of the third control switch T3 is connected to the control signal Em-1 outputted by the m-1 th stage trigger drive, a first pass end of the third control switch T3 is connected to a control end of the fourth control switch T4 and a second plate of the second capacitor C2, a second pass end of the third control switch T3 and a second pass end of the fifth control switch T5 are connected to the low voltage signal VGL, a first pass end of the fourth control switch T4 and a first plate of the second capacitor C2 are connected to the periodic signal emck of the present stage, a second pass end of the fourth control switch T4 and a first pass end of the fifth control switch T5 are connected to the sustain control node bn, a control end of the fifth control switch T5 is connected to the pull-up control node an, and a second pass end of the fifth control switch T5 is connected to the low voltage signal VGL. When m is 1, the control end of the third control switch T3 of the sustain module 003 of the first trigger driving is connected to the brightness adjusting signal PWM; when m is more than 1, the control end of the third control switch T3 is connected with the control signal Em-1 output by the m-1 stage trigger drive.
The pull-down module 004 includes a sixth control switch T6, a seventh control switch T7 and an eighth control switch T8, a control end of the sixth control switch T6, a control end of the seventh control switch T7 and a control end of the eighth control switch T8 are all connected to the maintenance control node netBn, a first path end of the sixth control switch T6 is connected to the pull-up control node netAn, a second path end of the sixth control switch T6 is connected to the low voltage signal VGL, a first path end of the seventh control switch T7 outputs the current-level control signal Em, a second path end of the seventh control switch T7 is connected to a first path end of the eighth control switch T8, and a second path end of the eighth control switch T8 is connected to the low voltage signal VGL.
The anti-creeping module 005 includes a ninth control switch T9, a control terminal of the ninth control switch T9 is connected to the present-stage control signal Em, a first path terminal of the ninth control switch T9 is connected to the high voltage signal VGH, and a second path terminal of the ninth control switch T9 is connected to the first path terminal of the eighth control switch T8 of the pull-down module 004.
The first other module 006 includes an eleventh control switch T11, the second other module 007 includes a thirteenth control switch T13, and the third other module 008 includes a twelfth control switch T12. A control end of the eleventh control switch T11, a control end of the twelfth control switch T12, and a control end of the thirteenth control switch T13 are all connected to the clear signal CLR, a first path end of the eleventh control switch T11 is connected to the pull-up control node netAn, a first path end of the thirteenth control switch T13 is connected to the sustain control node netBn, a first path end of the twelfth control switch T12 outputs the present-level control signal Em, a second path end of the eleventh control switch T11, a second path end of the twelfth control switch T12, and a second path end of the thirteenth control switch T13 are all connected to the low-voltage signal VGL.
The first control module 009 includes a fourteenth control switch T14, the second control module 010 includes a fifteenth control switch T15, a control terminal of the fourteenth control switch T14 and a control terminal of the fifteenth control switch T15 are also connected to the gate signal Gn of the nth stage gate driving unit, a first path terminal of the fourteenth control switch is connected to the high voltage signal VGH, a first path terminal of the fifteenth control switch is connected to the low voltage signal VGL, a second path terminal of the fourteenth control switch is connected to the sustain control node netBn, and a second path terminal of the fifteenth control switch is connected to the pull-up control node netAn.
The present invention utilizes the brightness adjusting signal PWM and the current-stage periodic signal CKEm to control the first control switch T1 and the second control switch T2, respectively, to generate the stage transmission signal of the first control switch T1, and drive the high voltage signal VGH to control the switching capability of the tenth control switch T10, and to charge the first storage capacitor C1. When the voltage of the pull-up control node netAn is a high potential, the tenth control switch T10 can be constantly turned on, the current-stage control signal Em outputs a high potential, and meanwhile, due to the effect of the first storage capacitor C1, the voltage of the pull-up control node netAn is further increased, so that the output voltage of the current-stage control signal Em is ensured to reach the high voltage and to be stable.
At this time, the third control switch T3 and the fifth control switch T5 are controlled by the brightness adjustment signal PWM and the pull-up control node netAn at the same time, so that the fourth control switch T4 is turned off during the high level period of the brightness adjustment signal PWM, and the control node netBn is maintained at the low level, so that the sixth control switch T6, the seventh control switch T7 and the eighth control switch T8 of the pull-down unit 004 are turned off, and thus the output of the partial potential of the current-stage control signal Em is not affected.
When the luminance adjustment signal PWM input potential becomes low, both the third control switch T3 and the fifth control switch T5 are turned off. During this time, the fourth control switch T4 is controlled to be turned on or off by the present-stage periodic signal CKEm. When the CKEm signal is at a high level, the fourth control switch T4 is turned on and charges the net bn due to the coupling effect of the second storage capacitor C2; when the signal CKEm of the current stage is inputted with a low level, the fourth control switch T4 is turned off due to the coupling effect of the second storage capacitor C2, so that the voltage of the control node netBn maintains a high level state, and the pull-down unit 004 is driven to start to operate, so that the potential of the current stage control signal Em is pulled down to a low level.
The pulse width and the period signal CKEm of the brightness adjusting signal PWM are adjusted, and the control signal for controlling the pixel compensation driving circuit 200 can be generated by matching with the high voltage VGH and the low voltage VGL dc power signal, so as to control the light emitting time of the light emitting unit 30, and further control the brightness change received by human eyes.
In addition, when the gate signal Gn output by the gate driving circuit 300 is at a high level, the tenth control switch T10 in the circuit is turned off, the sixth control switch T6, the seventh control switch T7 and the eighth control switch T8 of the pull-down unit 004 are turned on, the potential of the control signal is pulled down, the control signal Em at the current stage is ensured to be at a low level during the period when the gate signal Gn outputs the high level, and the first control module 009 and the second control module 010 meet the signals required by the pixel compensation driving circuit 200 in the stage of needing to be turned off.
The trigger driving circuit can control the light emitting time of the light emitting unit to further achieve the brightness change of the display device, and can also control the control signal required by the pixel compensation driving circuit during compensation (as shown in fig. 6, only the control signal Em is at low level during the period when the gate signal Gn outputs high level, and the adjustable control signal is achieved by adjusting the pulse width of the brightness adjusting signal PWM and the period signal CKE, and the control signal required by different compensation circuits can be adjusted accordingly).
Fig. 8 is a schematic structural diagram of a second embodiment of a circuit architecture in which the trigger driving circuit 100 employs 15T2C, which is different from the first embodiment: the control end of the fifth control switch T5 is connected with the control signal Em-1 output by the m-1 th stage trigger drive. When m is equal to 1, the control end of the third control switch T3 and the control end of the fifth control switch T5 of the sustain module 003 of the first-stage trigger driving are both connected to the brightness adjusting signal PWM; when m is more than 1, the control end of the fifth control switch T5 is connected with the control signal Em-1 output by the m-1 stage trigger drive.
The driving waveforms of the second embodiment are the same as those of the first embodiment (shown in fig. 6), and during the period when the control signal outputs the high level, the third control switch T3 and the fifth control switch T5 are simultaneously controlled by the brightness adjusting signal PWM, so that the fourth control switch T4 is turned off during the high level period of the brightness adjusting signal PWM, the control node netBn is maintained at the low level, the pull-down unit 004 is turned off, the potential of the control signal is maintained, and during the period when the control signal outputs the low level, the operation principle of the first embodiment is referred to, and will not be described again.
The trigger driving circuit can realize the control signal required by the pixel compensation driving circuit, further compensate poor display caused by TFT characteristic deviation, control the light emitting time of the light emitting unit, further adjust the brightness and the gray scale of the organic light emitting display device and realize the dimming function of the organic light emitting display device.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An organic light emitting display device comprises a gate driving circuit, criss-cross scanning lines and data lines, pixel compensation driving circuits defined by the scanning lines and the data lines in a crossed manner, light emitting units connected with the pixel compensation driving circuits, and trigger driving circuits for outputting control signals to the corresponding pixel compensation driving circuits, wherein the gate driving circuits output gate signals to the corresponding trigger driving circuits; the grid driving circuit comprises N-level grid driving units, and grid signals output by the (N-1) th-level grid driving unit are connected to the nth-level grid driving unit, and the grid driving circuit is characterized in that the trigger driving circuit comprises N-level trigger driving units, control signals output by the (m-1) th-level trigger driving unit are connected to the mth-level trigger driving unit, and a high-voltage signal, a low-voltage signal, a clear signal, a periodic signal, a brightness adjusting signal with periodic control and a clear signal are arranged on the periphery of the trigger driving circuit; the m-level trigger drive comprises an up-down pull control unit (001), an up-pull module (002), a maintaining module (003), a down-pull module (004), an anti-creeping module (005), a first other module (006), a second other module (007), a third other module (008), a first control module (009) and a second control module (010); the pull-up and pull-down control unit, the pull-up module, the pull-down module, the first other module and the first control module are connected to the pull-up control node; the maintaining module, the pull-down module, the second other module and the second control module are connected to a maintaining control node, and the first control module and the second control module are connected with a grid signal of the nth-stage grid driving unit; the pull-up module, the pull-down module and the third other module output a control signal of the current stage, the anti-creeping module is connected with the control signal of the current stage, wherein N and m are positive integers, N is more than 1 and less than or equal to N, and m is more than 1 and less than or equal to N.
2. The organic light-emitting display device according to claim 1, wherein: the pull-up and pull-down control unit (001) comprises a first control switch and a second control switch, wherein a first path end of the first control switch is connected with a high-voltage signal, and a second path end of the first control switch is connected with a first path end of the second control switch; the control end of the second control switch is connected with the current-stage periodic signal, and the second path end of the second control switch is connected with the pull-up control node; when m is 1, the control end of a first control switch of the pull-up and pull-down control unit driven by the first-stage trigger is connected with a brightness adjusting signal; when m is larger than 1, the control end of the first control switch T1 is connected with the control signal output by the m-1 th stage trigger drive.
3. The organic light-emitting display device according to claim 1, wherein: the pull-up module (002) comprises a tenth control switch and a first capacitor, a control end of the tenth control switch is connected with a pull-up control node, a first pass end of the tenth control switch is connected with a high-voltage signal, a first pole plate of the first capacitor is connected with the pull-up control node, and a second pass end of the tenth control switch and a second pole plate of the first capacitor output a control signal of the current stage.
4. The organic light-emitting display device according to claim 1, wherein: the maintaining module (003) comprises a third control switch, a fourth control switch, a fifth control switch and a second capacitor, wherein a first path end of the third control switch is connected with a control end of the fourth control switch and a second plate of the second capacitor, a second path end of the third control switch and a second path end of the fifth control switch are connected with a low-voltage signal, a first path end of the fourth control switch and a first plate of the second capacitor are connected with a current-stage periodic signal, a second path end of the fourth control switch and a first path end of the fifth control switch are connected with a maintaining control node, a control end of the fifth control switch is connected with a pull-up control node, and a second path end of the fifth control switch is connected with a low-voltage signal; when m is 1, the control end of a third control switch of the maintaining module driven by the first-stage trigger is connected with a brightness adjusting signal; when m is larger than 1, the control end of the third control switch is connected with the control signal output by the m-1 stage trigger drive.
5. The organic light-emitting display device according to claim 1, wherein: the maintaining module (003) comprises a third control switch, a fourth control switch, a fifth control switch and a second capacitor, wherein a first path end of the third control switch is connected with a control end of the fourth control switch and a second plate of the second capacitor, a second path end of the third control switch and a second path end of the fifth control switch are connected with a low-voltage signal, a first path end of the fourth control switch and a first plate of the second capacitor are connected with a current-stage periodic signal, a second path end of the fourth control switch and a first path end of the fifth control switch are connected with a maintaining control node, and a second path end of the fifth control switch is connected with a low-voltage signal; when m is equal to 1, the control end of a third control switch and the control end of a fifth control switch of the first-stage trigger-driven maintaining module are both connected with the brightness adjusting signal; when m is larger than 1, the control end of the third control switch and the control end of the fifth control switch are both connected with the control signal output by the m-1 th stage trigger drive.
6. The organic light-emitting display device according to claim 1, wherein: the pull-down module (004) comprises a sixth control switch, a seventh control switch and an eighth control switch, wherein a control end of the sixth control switch, a control end of the seventh control switch and a control end of the eighth control switch are all connected with a maintaining control node, a first access end of the sixth control switch is connected with an upper pull control node, a second access end of the sixth control switch is connected with a low-voltage signal, the first access end of the seventh control switch outputs a control signal of the current stage, the second access end of the seventh control switch is connected with a first access end of the eighth control switch, and the second access end of the eighth control switch is connected with the low-voltage signal.
7. The organic light-emitting display device according to claim 6, wherein: the electricity leakage prevention module (005) comprises a ninth control switch, the control end of the ninth control switch is connected with the control signal of the current stage, the first passage end of the ninth control switch is connected with the high-voltage signal, and the second passage end of the ninth control switch is connected with the first passage end of the eighth control switch of the pull-down module.
8. The organic light-emitting display device according to claim 6, wherein: the first further module (006) comprises an eleventh control switch, the second further module (007) comprises a thirteenth control switch, and the third further module (008) comprises a twelfth control switch; the control end of the eleventh control switch, the control end of the twelfth control switch and the control end of the thirteenth control switch are all connected with the clearing signal, the first pass end of the eleventh control switch is connected with the pull-up control node, the first pass end of the thirteenth control switch is connected with the maintaining control node, the first pass end of the twelfth control switch outputs the control signal of the current stage, and the second pass end of the eleventh control switch, the second pass end of the twelfth control switch and the second pass end of the thirteenth control switch are all connected with the low-voltage signal.
9. The organic light-emitting display device according to claim 6, wherein: the first control module (009) comprises a fourteenth control switch, the second control module (010) comprises a fifteenth control switch, a control end of the fourteenth control switch and a control end of the fifteenth control switch are also connected with a grid signal of the nth-stage grid drive unit, a first path end of the fourteenth control switch is connected with a high-voltage signal, a first path end of the fifteenth control switch is connected with a low-voltage signal, a second path end of the fourteenth control switch is connected with a pull-up control node of a maintenance control node, and a second path end of the fifteenth control switch is connected with a pull-up control node.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051448A (en) * | 2006-03-31 | 2007-10-10 | 恩益禧电子股份有限公司 | Semiconductor integrated circuit device used in data line driver of plane type display apparatus |
| CN101697284A (en) * | 2009-08-24 | 2010-04-21 | 友达光电股份有限公司 | Shift register circuit |
| CN102098831A (en) * | 2009-12-11 | 2011-06-15 | 乐金显示有限公司 | Apparatus and method of driving light source |
| CN102201194A (en) * | 2011-04-28 | 2011-09-28 | 友达光电股份有限公司 | Shift register circuit |
| CN102646391A (en) * | 2011-02-17 | 2012-08-22 | 三星移动显示器株式会社 | Organic light emitting display and driving method thereof |
| US20190019449A1 (en) * | 2017-07-12 | 2019-01-17 | Oculus Vr, Llc | Multi-layer fabrication for pixels with calibration compensation |
| CN110767163A (en) * | 2019-11-08 | 2020-02-07 | 京东方科技集团股份有限公司 | Pixel circuit and display panel |
-
2020
- 2020-08-31 CN CN202010893004.2A patent/CN112017592A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051448A (en) * | 2006-03-31 | 2007-10-10 | 恩益禧电子股份有限公司 | Semiconductor integrated circuit device used in data line driver of plane type display apparatus |
| CN101697284A (en) * | 2009-08-24 | 2010-04-21 | 友达光电股份有限公司 | Shift register circuit |
| CN102098831A (en) * | 2009-12-11 | 2011-06-15 | 乐金显示有限公司 | Apparatus and method of driving light source |
| CN102646391A (en) * | 2011-02-17 | 2012-08-22 | 三星移动显示器株式会社 | Organic light emitting display and driving method thereof |
| CN102201194A (en) * | 2011-04-28 | 2011-09-28 | 友达光电股份有限公司 | Shift register circuit |
| US20190019449A1 (en) * | 2017-07-12 | 2019-01-17 | Oculus Vr, Llc | Multi-layer fabrication for pixels with calibration compensation |
| CN110767163A (en) * | 2019-11-08 | 2020-02-07 | 京东方科技集团股份有限公司 | Pixel circuit and display panel |
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