CN109346009B - Organic light emitting display panel and display device - Google Patents
Organic light emitting display panel and display device Download PDFInfo
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- CN109346009B CN109346009B CN201811594713.XA CN201811594713A CN109346009B CN 109346009 B CN109346009 B CN 109346009B CN 201811594713 A CN201811594713 A CN 201811594713A CN 109346009 B CN109346009 B CN 109346009B
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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]
- G09G3/3266—Details of drivers for scan electrodes
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention provides an organic light-emitting display panel and a display device, relates to the technical field of display, and can reduce the space occupation of an indicator light. The organic light emitting display panel includes: the display device comprises a first display area, a second display area and a non-display area, wherein the first display area is used for displaying a normal picture, and the second display area is used for displaying indication information; a first light emission control circuit in the non-display region and electrically connected to the first pixel driving circuit; the second light-emitting control circuit is positioned in the non-display area and is electrically connected with the second pixel driving circuit; a first light emission control clock signal line located in the non-display area and electrically connected to the first light emission control circuit; and a second light-emitting control clock signal line in the non-display region and electrically connected to the second light-emitting control circuit.
Description
Technical Field
The invention relates to the technical field of display, in particular to an organic light-emitting display panel and a display device.
Background
With the development of Display technology, Organic Light Emitting Display (OLED) panels are increasingly widely used due to their excellent characteristics of self-luminescence, high brightness, wide viewing angle, fast response, etc.
In a conventional display device using an organic light emitting display panel, for example, in a mobile phone, in order to prompt an incoming call or information, an externally-hung indicator lamp is disposed outside the organic light emitting display panel, and a user is prompted by a light emitting state of the indicator lamp.
Disclosure of Invention
The embodiment of the invention provides an organic light-emitting display panel and a display device, which can reduce the space occupation of an indicator lamp.
In one aspect, an embodiment of the present invention provides an organic light emitting display panel, including:
the display device comprises a first display area, a second display area and a non-display area, wherein the first display area is used for displaying a normal picture, and the second display area is used for displaying indication information;
a plurality of first sub-pixels in the first display region, each of the first sub-pixels including a first pixel driving circuit and a corresponding first light emitting device, the first pixel driving circuit being electrically connected to the corresponding first light emitting device;
a first light emitting control circuit in the non-display area, electrically connected to the first pixel driving circuit, for outputting a first light emitting control pulse signal to the first pixel driving circuit, the first pixel driving circuit being configured to control whether the first light emitting device emits light in response to the first light emitting control pulse signal;
a first light emission control clock signal line positioned in the non-display area and electrically connected to the first light emission control circuit;
the second sub-pixel is positioned in the second display area and comprises a second pixel driving circuit and a corresponding second light-emitting device, and the second pixel driving circuit is electrically connected with the corresponding second light-emitting device;
a second light-emitting control circuit in the non-display area, electrically connected to the second pixel driving circuit, for outputting a second light-emitting control pulse signal to the second pixel driving circuit, wherein the second pixel driving circuit is configured to control whether the second light-emitting device emits light in response to the second light-emitting control pulse signal;
and a second light-emitting control clock signal line positioned in the non-display area and electrically connected to the second light-emitting control circuit.
Optionally, the first pixel driving circuit and the second pixel driving circuit have different structures;
in the first sub-pixel, the first light emitting device is connected in series between a first positive voltage power supply terminal and a first negative voltage power supply terminal;
the second pixel driving circuit comprises a second light-emitting control switch transistor, the second light-emitting control switch transistor and the corresponding second light-emitting device are connected in series between a second positive voltage power supply end and a second negative voltage power supply end, only the second light-emitting control switch transistor and the second light-emitting device are connected in series between the second positive voltage power supply end and the second negative voltage power supply end, and the control end of the second light-emitting control switch transistor is electrically connected to the second light-emitting control circuit.
Optionally, the first pixel driving circuit and the second pixel driving circuit have the same structure, and the first light emitting device and the second light emitting device are disposed in the same layer.
Optionally, the first pixel driving circuit and the second pixel driving circuit each include:
a first transistor, a control end of which is electrically connected to a light-emitting control signal end;
a second transistor, a first end of which is electrically connected to the data signal end, a second end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first scan signal end;
a third transistor, a first end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first node;
a fourth transistor, a first end of which is electrically connected to the first node, a second end of which is electrically connected to the second end of the third transistor, and a control end of which is electrically connected to the first scan signal end;
a fifth transistor having a first end electrically connected to the reference voltage end, a second end electrically connected to the first node, and a control end electrically connected to the second scan signal end;
a sixth transistor, a first end of which is electrically connected to the reference voltage end, a second end of which is electrically connected to the corresponding second node, and a control end of which is electrically connected to the second scan signal end;
a seventh transistor, a first end of which is electrically connected to the second end of the third transistor, a second end of which is electrically connected to the second node, and a control end of which is electrically connected to the first scan signal end;
a second end of the storage capacitor is electrically connected to the first node;
in the first sub-pixel, a first terminal of the first transistor is electrically connected to a first positive voltage power supply terminal, an anode of the first light emitting device is electrically connected to the second node, a cathode of the first light emitting device is electrically connected to a first negative voltage power supply terminal, and a first terminal of the storage capacitor is electrically connected to the first positive voltage power supply terminal;
in the second sub-pixel, a first terminal of the first transistor is electrically connected to a second positive voltage supply terminal, an anode of the second light emitting device is electrically connected to the second node, a cathode of the second light emitting device is electrically connected to a second negative voltage supply terminal, and a first terminal of the storage capacitor is electrically connected to the second positive voltage supply terminal.
Optionally, the organic light emitting display panel further includes:
the first scanning driving circuit is positioned in the non-display area and is electrically connected with the first pixel driving circuit in the first display area;
a first scan clock signal line in the non-display region and electrically connected to the first scan driving circuit;
the second scanning driving circuit is positioned in the non-display area and is electrically connected with the second pixel driving circuit in the second display area;
and a second scanning clock signal line positioned in the non-display area and electrically connected with the second scanning driving circuit.
Optionally, the organic light emitting display panel further includes:
a binding region, the first display region, and the second display region being arranged in a first direction, the first display region being located between the binding region and the second display region;
a first data line electrically connected to a data signal terminal of the first pixel driving circuit;
a second data line electrically connected to a data signal terminal of the second pixel driving circuit;
in the first direction, the first data line extends from the first display region to the non-display region and from the non-display region to the binding region;
the non-display area comprises a first non-display area and a second non-display area which are respectively positioned at two opposite sides of the first display area in a second direction, and the second direction is perpendicular to the first direction;
the first light emission control circuit, the first light emission control clock signal line, the second light emission control circuit, the second light emission control clock signal line, the first scan driver circuit, the first scan clock signal line, the second scan driver circuit, and the second scan clock signal line are located in the first non-display region;
the second data line extends from the second display region to the binding region through the second non-display region.
Optionally, the second display region includes a plurality of the second sub-pixels, and the plurality of the second sub-pixels include a plurality of sub-pixels of different colors.
Optionally, the second display region comprises a plurality of rows of the second sub-pixels;
the second light-emitting control circuit comprises a plurality of cascaded shift registers, the shift registers correspond to the second sub-pixels in a plurality of rows one by one, and the output end of each shift register is connected to the second pixel driving circuit in the corresponding second sub-pixel.
Optionally, a voltage difference between the second positive voltage power supply terminal and the second negative voltage power supply terminal is less than a voltage difference between the first positive voltage power supply terminal and the first negative voltage power supply terminal.
Optionally, the display indication information is a light source which can emit light continuously and/or in a flickering manner.
On the other hand, an embodiment of the present invention further provides a display device, including:
the driving chip and the organic light emitting display panel are arranged on the substrate;
the driving chip is electrically connected to the first light-emitting control clock signal line and the second light-emitting control clock signal line.
In the organic light emitting display panel and the display device in the embodiments of the present invention, a first display region for displaying a normal picture and a second display region for displaying prompt information are simultaneously disposed in the organic light emitting display panel, in the second display region, a second light emitting device for emitting light and a second pixel driving circuit for driving the second light emitting device to emit light are also disposed, and in the non-display region, a second light emitting control circuit for independently controlling the second pixel driving circuit and a second light emitting control clock signal line for independently providing a clock signal to the second light emitting control circuit are disposed, so that the second light emitting control clock signal line is directly connected to the driving chip, and the driving chip can directly control the second display region to enable the second display region to display corresponding prompt information. The display of the indication information on the organic light-emitting display panel is directly realized, and an externally-hung indication lamp is not required to be additionally arranged, so that the space occupation of the indication lamp is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the first pixel driving circuit of FIG. 1;
FIG. 3 is a timing diagram of the first pixel driving circuit of FIG. 2;
FIG. 4 is a diagram of a second pixel driving circuit of FIG. 1;
FIG. 5 is a timing diagram of the second pixel driving circuit of FIG. 4;
FIG. 6 is a schematic diagram of the first pixel driving circuit or the second pixel driving circuit of FIG. 1;
FIG. 7 is a schematic structural diagram of another OLED panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention, and an embodiment of the present invention provides an organic light emitting display panel, including: the display device comprises a first display area 11, a second display area 12 and a non-display area 2, wherein the first display area 11 is used for displaying a normal picture, and the second display area 12 is used for displaying indication information; a plurality of first sub-pixels in the first display region 11, each of the first sub-pixels including a first pixel driving circuit and a corresponding first light emitting device, the first pixel driving circuit being electrically connected to the corresponding first light emitting device; a first light emission control circuit 31 in the non-display area 2, electrically connected to the first pixel driving circuit, for outputting a first light emission control pulse signal to the first pixel driving circuit, the first pixel driving circuit being configured to control whether the first light emitting device emits light in response to the first light emission control pulse signal; a first light emission control clock signal line 41 located in the non-display area 2 and electrically connected to the first light emission control circuit 31; a second sub-pixel located in the second display region 12, the second sub-pixel including a second pixel driving circuit and a corresponding second light emitting device, the second pixel driving circuit being electrically connected to the corresponding second light emitting device; a second light emission control circuit 32 in the non-display region 2, electrically connected to the second pixel driving circuit, for outputting a second light emission control pulse signal to the second pixel driving circuit, the second pixel driving circuit being configured to control whether the second light emitting device emits light in response to the second light emission control pulse signal; the second light emission control clock signal line 42 located in the non-display region 2 is electrically connected to the second light emission control circuit 32.
In the organic light emitting display panel according to the embodiment of the present invention, the first display region 11 for displaying a normal screen and the second display region 12 for displaying a prompt message are simultaneously provided in the organic light emitting display panel, in the second display region 12, a second light emitting device for emitting light, and a second pixel driving circuit for driving the second light emitting device to emit light are also provided, and, a second light emission control circuit 32 for controlling the second pixel driving circuit alone is provided in the non-display area 2, and a second light emission control clock signal line 42 for supplying a clock signal to the second light emission control circuit 32 alone, so that the second light-emitting control clock signal line 42 is directly connected to a driving chip (not shown in the figure), and the driving chip can directly control the second display region 12, so that the second display region 12 displays the corresponding prompt information. The display of the indication information on the organic light-emitting display panel is directly realized, and an externally-hung indication lamp is not required to be additionally arranged, so that the space occupation of the indication lamp is reduced.
Alternatively, as shown in fig. 2, fig. 3, fig. 4 and fig. 5, fig. 2 is a schematic diagram of the first pixel driving circuit in fig. 1, fig. 3 is a timing signal diagram of the first pixel driving circuit in fig. 2, fig. 4 is a schematic diagram of the second pixel driving circuit in fig. 1, fig. 5 is a timing signal diagram of the second pixel driving circuit in fig. 4, and the structures of the first pixel driving circuit and the second pixel driving circuit may be different; for example, as shown in fig. 2, in the first sub-pixel, the first light emitting device E1 is connected in series between the first positive voltage power supply terminal PVDD1 and the first negative voltage power supply terminal PVEE 1; for example, as shown in fig. 4, the second pixel driving circuit includes a second light emission controlling switching transistor M, the second light emission controlling switching transistor M and a corresponding second light emitting device E2 are connected in series between a second positive voltage power supply terminal PVDD2 and a second negative voltage power supply terminal PVEE2, and only the second light emission controlling switching transistor M and a second light emitting device E2 are connected in series between a second positive voltage power supply terminal PVDD2 and a second negative voltage power supply terminal PVEE2, and a control terminal of the second light emission controlling switching transistor M is electrically connected to the second light emission controlling circuit 32 through a second light emission control signal terminal EMIT 2.
Specifically, as shown in fig. 2 and 3, in the first sub-pixel, the first light emitting device E1 is used for realizing normal display, so that it can be a more complicated pixel driving circuit structure, as shown in fig. 3 and 4, and in the second sub-pixel, the second light emitting device E2 is only used for displaying indication information, so that it can be a simpler pixel driving circuit structure, and only the second light emitting device E2 is driven to be able to EMIT light or flash, for example, a structure in which only one second light emission control switching transistor M and the second light emitting device E2 are connected in series may be used, the second light emission control circuit 32 is used for outputting the second light emission control pulse signal, which is the timing signal illustrated in fig. 4, to the second light emission control signal terminal EMIT2, the second light emission control signal terminal EMIT2 is electrically connected to the control terminal of the second light emission control switching transistor M, the second light emission control pulse signal is used to control the on or off of the second light emission control on/off transistor M, and when the second light emission control switching transistor M is turned on, the second light emitting device E2 emits light, and when the second light emission control switching transistor M is turned off, the second light emitting device E2 does not emit light, so that continuous light emission or flicker of sub-pixels in the second display region 12 can be realized, and the structure shown in fig. 3 does not require a data signal line to supply a data voltage.
The following describes the first pixel driving circuit structure corresponding to fig. 2 and 3 by taking a specific driving process as an example:
in a first period T1, the first emission control signal terminal EMIT1 provides a high level to control the seventh transistor T7 and the first transistor T1 to be turned off, the first light emitting device E1 does not EMIT light, the first scan signal terminal S1 provides a low level to control the fifth transistor T5 to be turned on, the reference voltage of the reference voltage terminal VREF is transmitted to the first node N1 to reset the first node N1, the reference voltage is at a low level, the second scan signal terminal S2 provides a high level to control the fourth transistor T4 and the second transistor T2 to be turned off, the first scan signal terminal S1 provides a low level to control the sixth transistor T6 to be turned on, the reference voltage of the reference voltage terminal VREF is transmitted to the second node N2 to reset the anode of the first light emitting device E1;
in the second period T2, the first emission control signal terminal EMIT1 supplies a high level to control the seventh transistor T7 and the first transistor T1 to be turned off, the first light emitting device E1 does not EMIT light, the first scan signal terminal S1 supplies a high level to control the fifth transistor T5 to be turned off, the second scan signal terminal S2 supplies a low level to control the fourth transistor T4 and the second transistor T2 to be turned on, the data signal of the data voltage signal line 4 is transmitted to the first node N1 through the second transistor T2, the third transistor T3 and the fourth transistor T4 to charge the first node N1, the third transistor T3 is turned off when the potential of the first node N1 becomes Vdata-Vth, the Vdata is a data signal voltage value supplied from the data signal terminal Vdata, the threshold voltage of the third transistor T3, the first scan signal terminal S1 supplies a high level to control the sixth transistor T6 to be turned off;
in the third period T3, the first emission control signal terminal EMIT1 supplies a low level, the seventh transistor T7 and the first transistor T1 are controlled to be turned on, the first scan signal terminal S1 supplies a high level, the fifth transistor T5 is controlled to be turned off, the second scan signal terminal S2 supplies a high level, the fourth transistor T4 and the second transistor T2 are controlled to be turned off, the first scan signal terminal S1 supplies a high level, the sixth transistor T6 is controlled to be turned off, the potential of the first node N1 is maintained at Vdata + Vth by the storage capacitor C, the third transistor T3 is turned on by the potential of the first node N1, and the driving current Ids of the third transistor T3 satisfies the following formula:
Ids＝K(Vgs-Vth)2＝K(Vdata+Vth-VDD-Vth)2＝K(Vdata-VDD)2where K is a constant, Vgs is a gate-source voltage of the third transistor T3, the first light emitting device E1 is connected in series between the first positive voltage power supply terminal PVDD1 and the first negative voltage power supply terminal PVEE1, VDD is a driving voltage provided by the first positive voltage power supply terminal PVDD1, and the driving current Ids flows through the first light emitting device E1 to drive the first light emitting device E1 to emit light.
Alternatively, the first pixel driving circuit and the second pixel driving circuit may have the same structure, and the first light emitting device and the second light emitting device are disposed in the same layer. When the first pixel driving circuit and the second pixel driving circuit have the same structure, the manufacturing processes in the first display region 11 and the second display region 12 are the same, and no new circuit design is needed.
Alternatively, as shown in fig. 6, fig. 6 is a schematic diagram of the first pixel driving circuit or the second pixel driving circuit in fig. 1, and each of the first pixel driving circuit and the second pixel driving circuit includes: a first transistor T1, a control terminal of which is electrically connected to the emission control signal terminal EMIT; a second transistor T2, a first end of which is electrically connected to the data signal terminal VDATA, a second end of which is electrically connected to the second end of the first transistor T1, and a control end of which is electrically connected to the first scan signal terminal S1; a third transistor T3, a first terminal of which is electrically connected to the second terminal of the first transistor T1, and a control terminal of which is electrically connected to the first node N1; a fourth transistor T4, having a first end electrically connected to the first node N1, a second end electrically connected to the second end of the third transistor T3, and a control end electrically connected to the first scan signal terminal S1; a fifth transistor T5, a first terminal of which is electrically connected to the reference voltage terminal VREF, a second terminal of which is electrically connected to the first node N1, and a control terminal of which is electrically connected to the second scan signal terminal S2; a sixth transistor T6, a first end of which is electrically connected to the reference voltage terminal VREF, a second end of which is electrically connected to the corresponding second node N2, and a control end of which is electrically connected to the second scan signal terminal S2; a seventh transistor T7, having a first end electrically connected to the second end of the third transistor T3, a second end electrically connected to the second node N2, and a control end electrically connected to the first scan signal terminal S1; a second end of the storage capacitor C is electrically connected to the first node N1; in the first sub-pixel, a first terminal of the first transistor T1 is electrically connected to a first positive voltage power supply terminal PVDD1, an anode of the first light emitting device E1 is electrically connected to the second node N2, a cathode of the first light emitting device E1 is electrically connected to a first negative voltage power supply terminal PVEE1, and a first terminal of the storage capacitor is electrically connected to a first positive voltage power supply terminal PVDD 1; in the second sub-pixel, the first terminal of the first transistor T1 is electrically connected to the second positive voltage power supply terminal PVDD2, the anode of the second light emitting device E2 is electrically connected to the second node N2, the cathode of the second light emitting device E2 is electrically connected to the second negative voltage power supply terminal PVEE2, and the first terminal of the storage capacitor is electrically connected to the second positive voltage power supply terminal PVDD 2. The first pixel driving circuit and the second pixel driving circuit have the same configuration, and differ only in the signal line used. The specific operation principle of the first pixel driving circuit and the second pixel driving circuit can be described with reference to the corresponding first pixel driving circuit in fig. 2.
Optionally, as shown in fig. 7, fig. 7 is a schematic structural diagram of another organic light emitting display panel in an embodiment of the present invention, in the structure shown in fig. 7, structures of the first pixel driving circuit and the second pixel driving circuit are the same and are both the structures illustrated in fig. 6, and the organic light emitting display panel further includes: a first scan driving circuit 61 in the non-display region 2, electrically connected to the first pixel driving circuit in the first display region 11; a first scan clock signal line 71 located in the non-display area 2 and electrically connected to the first scan driving circuit 61; a second scan driving circuit 62 located in the non-display area 2 and electrically connected to the second pixel driving circuit in the second display area 12; the second scan clock signal line 72 located in the non-display area 2 is electrically connected to the second scan driving circuit 62.
Specifically, the first light-emitting control circuit 31 is configured to provide a signal to a light-emitting control signal terminal EMIT of the first pixel driving circuit in the first display region 11, the second light-emitting control circuit 32 is configured to provide a signal to a light-emitting control signal terminal EMIT of the second pixel driving circuit in the second display region 12, the first scan driving circuit 61 is configured to provide a signal to a first scan signal terminal S1 and a second scan signal terminal S2 of the first pixel driving circuit in the first display region 11, the second scan driving circuit 62 is configured to provide a signal to a first scan signal terminal S1 and a second scan signal terminal S2 of the second pixel driving circuit in the second display region 12, the first scan clock signal line 71 is configured to provide a required clock signal to the first scan driving circuit 61, and the second scan clock signal line 72 is configured to provide a required clock signal to the second scan driving circuit 62. Since the clock signal lines required for the first display region 11 and the second display region 12 are independent of each other, the two display regions do not affect each other.
Alternatively, as shown in fig. 7, the organic light emitting display panel further includes: a binding region 10, the first display region 11 and the second display region 12 being arranged in a first direction h1, the first display region 11 being located between the binding region 10 and the second display region 12; a first data line 81 electrically connected to a data signal terminal of the first pixel driving circuit; a second data line 82 electrically connected to a data signal terminal of the second pixel driving circuit; the first data line 81 extends from the first display area 11 to the non-display area 2 and from the non-display area 2 to the binding area 10 in the first direction h 1; the non-display area 2 includes a first non-display area 21 and a second non-display area 22 respectively located at opposite sides of the first display area 11 in a second direction h2, the second direction h2 being perpendicular to the first direction h 1; the first light emission control circuit 31, the first light emission control clock signal line 41, the second light emission control circuit 32, the second light emission control clock signal line 42, the first scan drive circuit 61, the first scan clock signal line 71, the second scan drive circuit 62, and the second scan clock signal line 72 are located in the first non-display area 21; the second data line 82 extends from the second display area 12 to the binding area 10 through the second non-display area 22. The wiring shown in fig. 7 is more space-saving, which is beneficial to the implementation of a narrow frame.
Optionally, the second display area 12 includes a plurality of second sub-pixels, and the plurality of second sub-pixels include a plurality of sub-pixels with different colors, that is, the display of the color indication information in the second display area 12 can be realized.
Optionally, the second display region 12 comprises a plurality of rows of second sub-pixels; the second light-emission control circuit 32 includes a plurality of cascaded shift registers, the shift registers correspond to the rows of second sub-pixels one to one, and an output end of each shift register is connected to the second pixel driving circuit in the corresponding second sub-pixel. Thus, the scanning control of the plurality of rows of the second sub-pixels can be realized, and more complicated pattern display can be realized in the second display area 12.
Alternatively, the voltage difference between second positive voltage power supply terminal PVDD2 and second negative voltage power supply terminal PVEE2 is less than the voltage difference between first positive voltage power supply terminal PVDD1 and first negative voltage power supply terminal PVEE 1. Since the second display region 12 is only for indication, the number of light emitting devices therein is small, and a low current can be used for driving.
Optionally, the indication information is displayed as a light source that may emit light continuously and/or flash.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a display device in an embodiment of the present invention, and an embodiment of the present invention further provides a display device, including: a driving chip (not shown) and the organic light emitting display panel 100; the driving chip is electrically connected to the first light emission control clock signal line 41 and the second light emission control clock signal line 42.
The specific structure and principle of the organic light emitting display panel 100 are the same as those of the above embodiments, and are not described herein again. The display device may be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, an electronic paper book, or a television.
In the display device in the embodiment of the invention, a first display area for displaying a normal picture and a second display area for displaying prompt information are simultaneously arranged in an organic light-emitting display panel, a second light-emitting device for emitting light and a second pixel driving circuit for driving the second light-emitting device to emit light are also arranged in the second display area, a second light-emitting control circuit for independently controlling the second pixel driving circuit and a second light-emitting control clock signal line for independently providing a clock signal for the second light-emitting control circuit are arranged in a non-display area, so that the second light-emitting control clock signal line is directly connected to a driving chip, and the driving chip can directly control the second display area to enable the second display area to display the corresponding prompt information. The display of the indication information on the organic light-emitting display panel is directly realized, and an externally-hung indication lamp is not required to be additionally arranged, so that the space occupation of the indication lamp is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An organic light emitting display panel, comprising:
the display device comprises a first display area, a second display area and a non-display area, wherein the first display area is used for displaying a normal picture, and the second display area is used for displaying indication information;
a plurality of first sub-pixels in the first display region, each of the first sub-pixels including a first pixel driving circuit and a corresponding first light emitting device, the first pixel driving circuit being electrically connected to the corresponding first light emitting device;
a first light emitting control circuit in the non-display area, electrically connected to the first pixel driving circuit, for outputting a first light emitting control pulse signal to the first pixel driving circuit, the first pixel driving circuit being configured to control whether the first light emitting device emits light in response to the first light emitting control pulse signal;
a first light emission control clock signal line positioned in the non-display area and electrically connected to the first light emission control circuit;
the second sub-pixel is positioned in the second display area and comprises a second pixel driving circuit and a corresponding second light-emitting device, and the second pixel driving circuit is electrically connected with the corresponding second light-emitting device;
a second light-emitting control circuit in the non-display area, electrically connected to the second pixel driving circuit, for outputting a second light-emitting control pulse signal to the second pixel driving circuit, wherein the second pixel driving circuit is configured to control whether the second light-emitting device emits light in response to the second light-emitting control pulse signal; the second light-emitting control circuit and the first light-emitting control circuit are mutually independent;
a second light emission control clock signal line located in the non-display region and electrically connected to the second light emission control circuit;
the second pixel driving circuit includes:
a first transistor, a control end of which is electrically connected to a light-emitting control signal end;
a second transistor, a first end of which is electrically connected to the data signal end, a second end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first scan signal end;
a third transistor, a first end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first node;
a fourth transistor, a first end of which is electrically connected to the first node, a second end of which is electrically connected to the second end of the third transistor, and a control end of which is electrically connected to the first scan signal end;
a fifth transistor having a first end electrically connected to the reference voltage end, a second end electrically connected to the first node, and a control end electrically connected to the second scan signal end;
a sixth transistor, a first end of which is electrically connected to the reference voltage end, a second end of which is electrically connected to the corresponding second node, and a control end of which is electrically connected to the second scan signal end;
a seventh transistor, a first end of which is electrically connected to the second end of the third transistor, a second end of which is electrically connected to the second node, and a control end of which is electrically connected to the first scan signal end;
a second end of the storage capacitor is electrically connected to the first node;
in the second sub-pixel, a first terminal of the first transistor is electrically connected to a second positive voltage supply terminal, an anode of the second light emitting device is electrically connected to the second node, a cathode of the second light emitting device is electrically connected to a second negative voltage supply terminal, and a first terminal of the storage capacitor is electrically connected to the second positive voltage supply terminal;
the organic light emitting display panel further includes:
the second scanning driving circuit is positioned in the non-display area and is electrically connected with the second pixel driving circuit in the second display area;
a second scan clock signal line in the non-display region and electrically connected to the second scan driving circuit;
a binding region, the first display region, and the second display region being arranged in a first direction, the first display region being located between the binding region and the second display region;
a second data line electrically connected to a data signal terminal of the second pixel driving circuit;
the non-display area comprises a first non-display area and a second non-display area which are respectively positioned at two opposite sides of the first display area in a second direction, and the second direction is perpendicular to the first direction;
the second light emission control circuit, the second light emission control clock signal line, the second scan driving circuit, and the second scan clock signal line are located in the first non-display region;
the second data line extends from the second display region to the binding region through the second non-display region.
2. The organic light-emitting display panel according to claim 1,
the first pixel driving circuit and the second pixel driving circuit have the same structure, and the first light emitting device and the second light emitting device are arranged on the same layer.
3. The organic light-emitting display panel according to claim 2,
the first pixel driving circuit includes:
a first transistor, a control end of which is electrically connected to a light-emitting control signal end;
a second transistor, a first end of which is electrically connected to the data signal end, a second end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first scan signal end;
a third transistor, a first end of which is electrically connected to the second end of the first transistor, and a control end of which is electrically connected to the first node;
a fourth transistor, a first end of which is electrically connected to the first node, a second end of which is electrically connected to the second end of the third transistor, and a control end of which is electrically connected to the first scan signal end;
a fifth transistor having a first end electrically connected to the reference voltage end, a second end electrically connected to the first node, and a control end electrically connected to the second scan signal end;
a sixth transistor, a first end of which is electrically connected to the reference voltage end, a second end of which is electrically connected to the corresponding second node, and a control end of which is electrically connected to the second scan signal end;
a seventh transistor, a first end of which is electrically connected to the second end of the third transistor, a second end of which is electrically connected to the second node, and a control end of which is electrically connected to the first scan signal end;
a second end of the storage capacitor is electrically connected to the first node;
in the first sub-pixel, a first terminal of the first transistor is electrically connected to a first positive voltage power supply terminal, an anode of the first light emitting device is electrically connected to the second node, a cathode of the first light emitting device is electrically connected to a first negative voltage power supply terminal, and a first terminal of the storage capacitor is electrically connected to the first positive voltage power supply terminal.
4. The organic light-emitting display panel according to claim 3, further comprising:
the first scanning driving circuit is positioned in the non-display area and is electrically connected with the first pixel driving circuit in the first display area;
and a first scan clock signal line in the non-display region and electrically connected to the first scan driving circuit.
5. The organic light-emitting display panel according to claim 4, further comprising:
a first data line electrically connected to a data signal terminal of the first pixel driving circuit;
in the first direction, the first data line extends from the first display region to the non-display region and from the non-display region to the binding region;
the first light emitting control circuit, the first light emitting control clock signal line, the first scan driving circuit, and the first scan clock signal line are located in the first non-display area;
the second data line extends from the second display region to the binding region through the second non-display region.
6. The organic light-emitting display panel according to claim 1,
the second display region includes a plurality of the second sub-pixels including a plurality of sub-pixels of different colors.
7. The organic light-emitting display panel according to claim 1,
the second display region comprises a plurality of rows of the second subpixels;
the second light-emitting control circuit comprises a plurality of cascaded shift registers, the shift registers correspond to the second sub-pixels in a plurality of rows one by one, and the output end of each shift register is connected to the second pixel driving circuit in the corresponding second sub-pixel.
8. The organic light-emitting display panel according to claim 3,
the voltage difference between the second positive voltage power supply terminal and the second negative voltage power supply terminal is less than the voltage difference between the first positive voltage power supply terminal and the first negative voltage power supply terminal.
9. The organic light-emitting display panel according to claim 1, wherein the display indication information is a light source which can emit light continuously and/or emit light in a blinking manner.
10. A display device, comprising:
a driving chip and the organic light emitting display panel according to any one of claims 1 to 9;
the driving chip is electrically connected to the first light-emitting control clock signal line and the second light-emitting control clock signal line.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111613173A (en) * | 2019-02-23 | 2020-09-01 | 华为技术有限公司 | Display driving system, display module, driving method of display screen and electronic equipment |
| WO2020169036A1 (en) | 2019-02-23 | 2020-08-27 | 华为技术有限公司 | Display driving system, display module, display screen driving method, and electronic device |
| CN113823207A (en) | 2020-06-18 | 2021-12-21 | 华为技术有限公司 | Drive control method and related equipment |
| CN113936604B (en) * | 2020-06-29 | 2022-12-27 | 京东方科技集团股份有限公司 | Display substrate and display device |
| JP7576938B2 (en) * | 2020-07-22 | 2024-11-01 | 武漢天馬微電子有限公司 | Display device |
| CN111768713B (en) * | 2020-07-31 | 2022-01-14 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112652266A (en) * | 2020-12-28 | 2021-04-13 | 厦门天马微电子有限公司 | Display panel and display device |
| WO2023206462A1 (en) * | 2022-04-29 | 2023-11-02 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method therefor, and display device |
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