CN108877646B - Display circuit and display - Google Patents

Display circuit and display Download PDF

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Publication number
CN108877646B
CN108877646B CN201810836478.6A CN201810836478A CN108877646B CN 108877646 B CN108877646 B CN 108877646B CN 201810836478 A CN201810836478 A CN 201810836478A CN 108877646 B CN108877646 B CN 108877646B
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display
module
nmos
driving
pmos
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CN108877646A (en
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郑凯元
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Xiamen Lingyang Huaxin Technology Co ltd
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Xiamen Ling Yang Core Technology Co Ltd
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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]
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses a display circuit, when the display circuit is a static picture signal, a driving IC and a row driving module are disconnected with a display driving module in the display circuit, and a storage module in the display circuit stores the static picture signal so as to display the static picture signal of a sub-pixel through a light-emitting diode; at this time, the driver IC and the row driver module do not need to transmit the update data to each sub-pixel in the display panel, so that the driver IC and the row driver module do not consume power any more, and power consumption caused by the main control chip and the driver chip transmitting the update data to the display panel is saved in a static picture. In addition, the invention also discloses a display with the above effects.

Description

Display circuit and display
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a display circuit and a display.
Background
At present, displays have been widely used in daily life of users, and each sub-pixel in the display includes a light emitting diode to convert current into a light signal to display a picture on a display panel of the display.
In order to ensure that the display panel of the display can maintain normal images, the front end of the display needs to continuously update data and transmit the updated data to the display panel. At present, no matter a dynamic picture or a static picture, a front end of a display continuously updates data and transmits the updated data to a driving IC, and the driving IC also transmits a corresponding driving signal to a row driving circuit (Scan driver) of a display panel to drive each sub-pixel of the display panel (including a plurality of sub-pixels, each sub-pixel having a corresponding display circuit (light emitting diode and peripheral circuit)) to display the corresponding updated data, so that the static picture (corresponding to the static picture signal) does not need to update data in real time, a main control chip at the front end continuously updates data and transmits the data to the driving IC, and the driving IC and the row driving circuit consume a certain power and waste power.
Therefore, how to save the power consumption caused by the display transmitting the update data to the display panel when the display is still is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to disclose a display circuit and a display, which save the power loss caused by transmitting update data to a display panel by the display in a static picture.
In order to achieve the above purpose, the embodiment of the invention discloses the following technical scheme:
first, an embodiment of the present invention discloses a display circuit, including:
the display device comprises a display driving module for receiving a static picture signal, a mode switching module for receiving the static picture switching signal, a light emitting diode and a storage module for storing the static picture signal;
the display driving module is respectively connected with a row driving module and a driving IC, and the row driving module is connected with the driving IC, so that after the display driving module receives the static picture signal sent by a main control chip connected with the driving IC, the display driving module is disconnected with the row driving module and the driving IC and is connected with the mode switching module and the storage module;
the light emitting diode is connected with the storage module through the display driving module and the mode switching module so as to display the static picture signal.
Preferably, the display driving module includes: the first NMOS transistor, the first PMOS transistor and the first capacitor;
the grid electrode of the first NMOS tube is connected with the row driving module, the drain electrode of the first NMOS tube is connected with the driving IC, and the source electrode of the first NMOS tube is respectively connected with the first end of the first capacitor and the grid electrode of the first PMOS tube;
the source electrode of the first PMOS tube is connected with a power supply, and the drain electrode of the first PMOS tube is connected with the light-emitting diode;
correspondingly, the mode switching module comprises: the second NMOS tube, the second PMOS tube and the third NMOS tube;
the source electrode of the second NMOS tube is connected with the source electrode of the first NMOS tube;
the drain electrode of the second NMOS tube is connected with the drain electrode of the second PMOS tube;
the grid electrode of the second NMOS tube is connected with a signal input end corresponding to the mode switching signal;
the source electrode of the second PMOS tube is connected with the maximum voltage input end corresponding to the light-emitting diode, and the drain electrode of the third NMOS tube is connected with the minimum voltage input end corresponding to the light-emitting diode.
Preferably, the mode switching module includes: the fourth NMOS tube, the fifth NMOS tube and the first resistor;
the source electrode of the fourth NMOS tube is respectively connected with the first end of the first resistor and the drain electrode of the fifth NMOS tube, the second end of the first resistor is connected with the maximum voltage input end corresponding to the light-emitting diode, the drain electrode of the fourth NMOS tube is connected with the minimum voltage input end corresponding to the light-emitting diode, and the grid electrode of the fourth NMOS tube is connected with the storage module;
the grid electrode of the fifth NMOS tube is connected with a signal input end corresponding to the mode switching signal;
the display driving module includes: a sixth NMOS transistor, a seventh NMOS transistor and a second capacitor;
the drain electrode of the sixth NMOS tube is connected with the drive IC, the grid electrode of the sixth NMOS tube is connected with the row drive module, the source electrode of the sixth NMOS tube is respectively connected with the first end of the second capacitor, the source electrode of the fifth NMOS tube and the grid electrode of the seventh NMOS tube, and the second end of the second capacitor is respectively connected with the source electrode and the ground end of the seventh NMOS tube.
Preferably, the display driving module includes:
a third PMOS tube, a fourth PMOS tube and a third capacitor;
the source electrode of the third PMOS tube is connected with the drive IC, and the grid electrode of the third PMOS tube is connected with the row drive module;
the drain electrode of the third PMOS tube is respectively connected with the first end of the third capacitor and the grid electrode of the fourth PMOS tube, and the source electrode of the fourth PMOS tube is respectively connected with the second end of the third capacitor and the power supply;
correspondingly, the mode switching module comprises:
a fifth PMOS tube, a sixth PMOS tube and a second resistor;
the drain electrode of the fifth PMOS tube is connected with the drain electrode of the third PMOS tube, the source electrode of the fifth PMOS tube is connected with the drain electrode of the sixth PMOS tube, and the grid electrode of the fifth PMOS tube is connected with the signal input end corresponding to the mode switching signal;
the source electrode of the sixth PMOS tube is connected with the maximum voltage input end corresponding to the light-emitting diode, the drain electrode of the sixth PMOS tube is connected with the first end of the second resistor, the grid electrode of the sixth PMOS tube is connected with the storage module, and the second end of the second resistor is connected with the minimum voltage input end corresponding to the light-emitting diode.
Preferably, the storage module comprises: a first inverter and a second inverter;
the first end of the first inverter and the second end of the second inverter are respectively connected with the mode switching module;
a second terminal of the first inverter is connected to a first terminal of the second inverter.
Secondly, the embodiment of the invention discloses a display, which comprises a display panel and the display circuit, wherein each sub-pixel of the display panel of the display comprises the display circuit.
In the display circuit disclosed in the embodiment of the present invention, the display driving module is respectively connected to the row driving module and the driving IC, so that after the display driving module receives the static picture signal sent by the main control chip connected to the driving IC, the display driving module is disconnected from the row driving module and the driving IC and is connected to the mode switching module and the storage module, and the light emitting diode is connected to the storage module through the mode switching module to display the electrical signal corresponding to the static picture signal. Therefore, by adopting the scheme, when the signal is a static picture signal, the driving IC and the row driving module are disconnected with the display driving module in the display circuit, and the storage module in the display circuit stores the static picture so as to display the static picture signal of the sub-pixel through the light-emitting diode; at this time, the driver IC and the row driver module no longer need to transmit the update data to each sub-pixel in the display panel, and therefore, the driver IC and the row driver module do not consume power any more, and power consumption caused by transmitting the update data to the display panel by the display is saved in static pictures. In addition, the embodiment of the invention also discloses a display with the above effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of a display circuit according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a display structure according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a display circuit according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of signal connections of signals in a display circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a display circuit according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of a display circuit structure according to a fifth embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 embodiment of the invention discloses a display circuit and a display, which save power loss caused by transmitting update data to a display panel by the display in a static picture.
Referring to fig. 1, fig. 1 is a display circuit according to a first embodiment of the present invention, including: a display driving module 10 for receiving a still picture signal, a mode switching module 20 for receiving the still picture switching signal, a light emitting diode 30, and a storage module 40 for storing the still picture signal;
the display driving module 10 is respectively connected with the row driving module 01 and the driving IC 02, and the row driving module 01 and the driving IC 02 are used for disconnecting the display driving module 10 from the row driving module 01 and the driving IC 02 and connecting the display driving module 10 with the mode switching module 20 and the storage module 40 after the display driving module 10 receives a static picture signal sent by the main control chip 03 connected with the driving IC 02; the light emitting diode 30 is connected to the storage module 40 through the display driving module 10 and the mode switching module 20 to display the still picture signal.
Specifically, in this embodiment, the display driving module 10 may specifically include a PMOS transistor, an NMOS transistor, a capacitor, a resistor, and other components, and the forming method may include: the first type is composed of a plurality of NMOS transistors, capacitors, resistors and other components, the second type is composed of a plurality of PMOS transistors, capacitors, resistors and other components, and the third type is composed of a plurality of NMOS transistors, PMOS transistors, capacitors, resistors and other components. The main function of the display driver module is that after the main control chip 03 connected to the driver IC 02 inputs a static image signal (the static image signal corresponds to static image data) to the display driver module 10, the display driver module 10 is disconnected from the row driver module 01 and the driver IC 02 (i.e. the main control chip 03 cannot transmit update data to the display panel through the driver IC), at this time, since the mode switching module 20 receives the static image switching signal, the mode switching module 20 is connected to the display driver module 10, and the storage module 40 connected to the mode switching module 20 receives the static image signal transmitted from the main control chip 03 to the display driver module 10 and stores the static image signal. The mode switching module 20 receives the operating voltage signal of the led corresponding to the still picture signal, and transmits the voltage signal of the led corresponding to the still picture signal to the led 30 through the display driving module 10 to display the still picture signal (in a light form), wherein the brightness of the led 30 can be displayed according to the magnitude of the still picture signal stored in the storage module 40. For example, if the voltage signal corresponding to the still picture signal stored in the storage module 40 is 6V, the led displays brightest, and if the voltage signal corresponding to the still picture signal stored in the storage module 40 is 1V, the led 30 displays darkest. The structures of the display driving module 10, the mode switching module 20 and the storage module 40 will be described in detail in the following embodiments.
The row driving module 01, the driving IC 02 and the main control chip 03 are all original circuit structures of the display, and each sub-pixel in a display panel of the display includes the display circuit in the embodiment of the present invention. The display of the whole static picture is realized in the display panel through the display circuit in each sub-pixel in the display panel.
In the display circuit disclosed in the embodiment of the present invention, the display driving module is respectively connected to the row driving module and the driving IC, so that after the display driving module receives the static picture signal sent by the main control chip connected to the driving IC, the display driving module is disconnected from the row driving module and the driving IC and is connected to the mode switching module and the storage module, and the light emitting diode is connected to the storage module through the mode switching module to display the electrical signal corresponding to the static picture signal. Therefore, by adopting the scheme, when the signal is a static picture signal, the driving IC and the row driving module are disconnected with the display driving module in the display circuit, and the storage module in the display circuit stores the static picture so as to display the static picture signal of the sub-pixel through the light-emitting diode; at this time, the driver IC and the row driver module no longer need to transmit the update data to each sub-pixel in the display panel, and therefore, the driver IC and the row driver module do not consume power any more, and power consumption caused by transmitting the update data to the display panel by the display is saved in static pictures.
Based on the above embodiments, as a preferred embodiment, the display driving module 10 includes: the first NMOS transistor, the first PMOS transistor and the first capacitor;
the grid electrode of the first NMOS tube is connected with the row driving module 10, the drain electrode of the first NMOS tube is connected with the driving IC 02, the source electrode of the first NMOS tube is connected with the first end of the first capacitor and the grid electrode of the first PMOS tube, the source electrode of the first PMOS tube is connected with the power supply, and the drain electrode of the first PMOS tube is connected with the light emitting diode 30.
Correspondingly, the mode switching module comprises: the second NMOS tube, the second PMOS tube and the third NMOS tube;
the source electrode of the second NMOS tube is connected with the source electrode of the first NMOS tube;
the drain electrode of the second NMOS tube is connected with the drain electrode of the second PMOS tube;
the grid electrode of the second NMOS tube is connected with a signal input end corresponding to the mode switching signal;
the source electrode of the second PMOS tube is connected with the maximum voltage input end corresponding to the light-emitting diode, and the drain electrode of the third NMOS tube is connected with the minimum voltage input end corresponding to the light-emitting diode.
Specifically, in this embodiment, the number of the NMOS transistors and the PMOS transistors may be other numbers, and the connection relationship between the NMOS transistors and the PMOS transistors may also be adjusted according to the actual situation, so long as the effect of the technical solution provided by the present invention can be achieved, all of which belong to the protection scope of the present invention.
Based on the above embodiment, as a preferred embodiment, the mode switching module 20 includes: the mode switching module includes: the fourth NMOS tube, the fifth NMOS tube and the first resistor;
the source electrode of the fourth NMOS transistor is connected to the first end of the first resistor and the drain electrode of the fifth NMOS transistor, the second end of the first resistor is connected to the maximum voltage input end corresponding to the light emitting diode, the drain electrode of the fourth NMOS transistor is connected to the minimum voltage input end corresponding to the light emitting diode, and the gate electrode of the fourth NMOS transistor is connected to the storage module 40;
the grid electrode of the fifth NMOS tube is connected with the signal input end corresponding to the mode switching signal;
the display driving module includes: a sixth NMOS transistor, a seventh NMOS transistor and a second capacitor;
the drain electrode of the sixth NMOS tube is connected with the drive IC 02, the grid electrode of the sixth NMOS tube is connected with the row drive module, the source electrode of the sixth NMOS tube is respectively connected with the first end of the second capacitor, the source electrode of the fifth NMOS tube and the grid electrode of the seventh NMOS tube, and the second end of the second capacitor is respectively connected with the source electrode of the seventh NMOS tube and the ground end.
Specifically, in this embodiment, the number of the NMOS transistors may also be other numbers, and the connection relationship between the NMOS transistors may also be adjusted according to the actual situation, so long as the effect of the technical solution provided by the present invention can be achieved, all of which belong to the protection scope of the present invention.
Based on the above embodiments, as a preferred embodiment, the display driving module 01 includes:
a third PMOS tube, a fourth PMOS tube and a third capacitor;
the source electrode of the third PMOS tube is connected with the drive IC, and the grid electrode of the third PMOS tube is connected with the row drive module 01;
the drain electrode of the third PMOS tube is respectively connected with the first end of the third capacitor and the grid electrode of the fourth PMOS tube, and the source electrode of the fourth PMOS tube is respectively connected with the second end of the third capacitor and the power supply;
the mode switching module 20 includes:
a fifth PMOS tube, a sixth PMOS tube and a second resistor;
the drain electrode of the fifth PMOS tube is connected with the drain electrode of the third PMOS tube, the source electrode of the fifth PMOS tube is connected with the drain electrode of the sixth PMOS tube, and the grid electrode of the fifth PMOS tube is connected with the signal input end corresponding to the mode switching;
the source electrode of the sixth PMOS tube is connected with the maximum voltage input end corresponding to the light-emitting diode, the drain electrode of the sixth PMOS tube is connected with the first end of the second resistor, the grid electrode of the sixth PMOS tube is connected with the storage module, and the second end of the second resistor is connected with the minimum voltage input end corresponding to the light-emitting diode.
Specifically, in this embodiment, the number of the PMOS transistors may also be other numbers, and the connection relationship between the PMOS transistors may also be adjusted according to the actual situation, so long as the effect of the technical solution provided by the present invention can be achieved, all of which belong to the protection scope of the present invention.
Based on the above embodiment, as a preferred embodiment, the storage module 40 includes: a first inverter and a second inverter;
a first terminal of the first inverter and a second terminal of the second inverter are respectively connected with the mode switching module 20;
the second terminal of the first inverter is connected to the first terminal of the second inverter.
Specifically, in this embodiment, the structure of the storage module 40 is not limited to the above manner, and the picture colors (for example, the voltage signal corresponding to red, the voltage signal corresponding to blue, and the voltage signal corresponding to green) corresponding to the static picture signals stored in the storage module 40 are not limited to three colors, i.e., red, blue, and green. The colors of the still image can be combined in many ways, and the embodiment of the invention is not limited herein.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a display according to a second embodiment of the present invention, in which only 4 sub-pixels in a display panel of the display are shown, but in practice, the number of sub-pixels in the display panel may be greater. The display 1 includes a display panel, and further includes: as with the display circuit of any of the above embodiments, each sub-pixel of the display panel of the display 1 includes the display circuit 101 of any of the above embodiments of the present invention.
Specifically, in the embodiment of the present invention, the display may be an OLED display, an LED display, or the like. It is understood that, no matter what type of display, when each sub-pixel in the display panel of the display includes the display circuit 101 according to any of the above embodiments, the power consumption caused by the display transmitting the update data to the display panel during the static picture can be saved. As can be seen, in the display disclosed in the embodiment of the present invention, each sub-pixel of the display panel of the display includes the display circuit disclosed in the embodiment of the present invention, so that the display disclosed in the embodiment of the present invention has the technical effect of any one of the above embodiments.
To better understand the technical solution proposed by the embodiment of the present invention, the technical solution of the embodiment of the present invention is described below with reference to the practical application scenario, please refer to fig. 3, fig. 3 is a schematic diagram of a display circuit structure disclosed by a third embodiment of the present invention, the display circuit in fig. 4 mainly adopts a display circuit formed by NMOS transistors and PMOS transistors, in fig. 4, the display driving circuit 10 includes a first NMOS transistor NMOS _1, a first PMOS transistor PMOS _1, and a capacitor C (a first capacitor), the mode switching circuit 20 includes a second NMOS transistor NMOS _2, a second PMOS transistor PMOS _2, and a third NMOS transistor NMOS _3, the storage circuit 40 includes a first inverter 401 and a second inverter 402, first ends of the first inverter 401 and the second inverter 402 are both grounded to GND, second ends of the first inverter 401 and the second inverter 402 are both connected to a signal input end of a control chip for providing a static picture signal V _ P, in the embodiment of the invention, the signals HVDD, GN, V _ data, Vin, V _ P and model control at the signal input ends are all provided by the display and input into a signal wiring diagram of the display circuit. Referring to fig. 4, fig. 4 is a schematic diagram of signal connection of signals in a display circuit according to an embodiment of the present invention, where the schematic diagram includes: a row driving signal input line, a picture display signal input line, a mode switching signal input line and an electric signal input line; the mode switching input signal line includes a high level signal and a low level signal (corresponding to a still picture signal and a moving picture signal), and the electrical signal input line includes a minimum allowable voltage signal VH and a maximum allowable voltage signal V0 of the light emitting diode corresponding to the still picture signal, a supply voltage signal HVDD of the power supply, and the still picture signal input to the storage module 40, wherein the magnitude relationship of the signal values input by each signal input line is specifically: the row driving signal V _ P > V0> -HVDD > VH > Vth _ diode > GND, Gn is an AC signal. V0 and VH are voltage ranges of the signal V _ data, and VIN is taken as V _ P and GND. To describe the connection relationship of the devices in fig. 4, first, the drain of the first NMOS transistor NMOS _1 is connected to the driving IC 02, the static picture signal transmitted by the driving IC 02 is compared with the GN signal at the GN signal end in the row driving signal input line of the row driving module 01, and if the driving IC 02 has written the output static picture signal into the storage module 40, the first NMOS transistor NMOS _1 is in the off state at this time. The grid of the first NMOS transistor NMOS _1 is connected to the row driving module 01, the source of the first NMOS transistor NMOS _1 is connected to the first end of the capacitor C, the source of the second NMOS transistor NMOS _2, and the grid of the first PMOS transistor PMOS _1, respectively, the source of the first PMOS transistor PMOS _1 is connected to the HVDD signal end (power) in the electrical signal input circuit, the drain of the first PMOS transistor PMOS _1 is connected to the anode of the light emitting diode 30, the cathode of the light emitting diode 30 is grounded to GND, the drain of the second NMOS transistor NMOS _2 is connected to the drain of the second PMOS transistor PMOS _2 and the source of the third NMOS transistor NMOS _3, respectively, the source of the second PMOS transistor PMOS _2 is connected to the V0 signal end (the highest operating voltage of the light emitting diode 30) in the electrical signal input circuit, the grid of the second PMOS transistor PMOS _2 is connected to the VIN signal end in the electrical signal input circuit, the grid of the third NMOS transistor, the storage module 40, respectively, the drain of the third NMOS transistor NMOS _3 is connected to a minimum allowable voltage signal VH terminal (minimum voltage input terminal) corresponding to the light emitting diode in the electrical signal input line. In the storage module 40, a first end of a first inverter 401 is connected to a second end of a second inverter 402, a second end of the first inverter 401 is connected to a first end of the second inverter 402, a third end of the first inverter 401 and a third end of the second inverter 402 are both connected to a ground GND, and a fourth end of the first inverter 401 and a fourth end of the second inverter 402 are both connected to a V _ P signal end in a still picture display signal input line.
It should be noted that, in the embodiment of the present invention, each sub-pixel includes the display circuit, and the voltage signal is displayed in the form of light by the light emitting diode, so that the whole static image is displayed by combining with the whole display panel. Vth _ diode represents the starting voltage of the light emitting diode.
Please refer to fig. 5, fig. 5 is a schematic diagram of a display circuit structure disclosed in a fourth embodiment of the present invention, and the magnitude sequence of the signal values of the various electrical signals in fig. 5 is also the row driving signal V _ P > V0> -HVDD > VH > Vth _ diode > GND and GN is an ac signal, so that it is not necessary to compare with other voltage signals. V0 and VH are voltage ranges of the signal V _ data, and VIN is taken as V _ P and GND. In fig. 5, the storage module 40 and the light emitting diode 30 are identical to the storage module 40 and the light emitting diode 30 in fig. 4, the mode switching module 20 includes a fourth NMOS transistor NMOS _4 and a fifth NMOS transistor NMOS _5 and a resistor, and the driving display module 10 includes a sixth NMOS transistor NMOS _6, a seventh NMOS transistor NMOS _7 and a capacitor C (a second capacitor). The structure of a display circuit disclosed in the embodiment of the present invention will be described in detail below, wherein a V _ data signal input terminal (drive IC) in a drain electrical signal input line of a sixth NMOS transistor NMOS _6 in the display drive module 10 is connected, a source of the sixth NMOS transistor NMOS _6 is connected to a first terminal of a capacitor C and a gate of a seventh NMOS transistor NMOS _7, respectively, a second terminal of the capacitor C is grounded GND, a gate of the sixth NMOS transistor NMOS _6 is connected to a row drive signal input terminal (GN) in the row drive signal input line, a source of the seventh NMOS transistor NMOS _7 in the display drive module 10 is grounded GND, a drain of the seventh NMOS transistor NMOS _7 is connected to a cathode of a light emitting diode 30, an anode of the light emitting diode 30 is connected to an HVDD signal terminal in the electrical signal input line, a source of a fourth NMOS _4 in the mode switching module 20 is connected to a first terminal of a first resistor, the second end of the first resistor is connected with a V0 signal end (maximum voltage input end) in the electric signal input circuit, the drain electrode of the fourth NMOS tube NMOS _4 is connected with a VH signal end (minimum voltage input end corresponding to the light-emitting diode) in the signal input circuit, the grid electrode of the fourth NMOS tube NMOS _4 is respectively connected with a Vin signal end in the signal input circuit and the storage module 40, the drain electrode of the fifth NMOS tube NMOS _5 is connected with the source electrode of the fourth NMOS tube NMOS _4, the source electrode of the fifth NMOS tube NMOS _5 is respectively connected with the first end of the capacitor C and the source electrode of the sixth NMOS tube NMOS _6, the gate of the seventh NMOS transistor NMOS _7 is connected, the gate of the fifth NMOS transistor NMOS _5 is connected to the Mode control terminal (the signal input terminal corresponding to the Mode switching signal) in the Mode switching signal input line, and the connection relationship of each device in the storage module 40 is the same as that in the embodiment corresponding to fig. 4, which is not described herein again. Vth _ diode represents the starting voltage of the light emitting diode.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a display circuit according to a fifth embodiment of the present invention, and as shown in fig. 6, the magnitude sequence of the signal values of the various electrical signals in fig. 6 is also row driving signals V _ P > V0> -HVDD > VH > Vth _ diode > GND, and GN is an ac signal. V0 and VH are voltage ranges of the signal V _ data, and a signal value range of VIN is between V _ P and 0. In the following description of the structure of the display circuit in fig. 6, the structure of the storage module 40 in fig. 6 is the same as that in the above embodiment, the driving display module 10 includes a third PMOS transistor PMOS _3, a fourth PMOS transistor PMOS _4 and a capacitor C (third capacitor), the mode switching module 20 includes a fifth PMOS transistor PMOS _5, a sixth PMOS transistor PMOS _6 and a resistor, the connection relationship of the devices in the display circuit is described below, the gate of the third PMOS transistor PMOS _3 is connected to the GN signal terminal (row driving module) in the row driving signal line, the source of the third PMOS transistor PMOS _3 is connected to the V _ data signal terminal (driving IC) in the electrical signal input line, the drain of the third PMOS transistor PMOS _3 is connected to the first terminal of the capacitor C, the second terminal of the capacitor C (third capacitor) is connected to the source of the fourth PMOS transistor PMOS _4 and the HVDD signal terminal (power supply) in the electrical signal input line, the drain of the fourth PMOS transistor PMOS _4 is connected to the anode of the light emitting diode 30, the cathode of the light emitting diode is grounded GND, the drain of the fifth PMOS transistor PMOS _5 is connected to the first end of the capacitor C and the drain of the third PMOS transistor PMOS _3, respectively, the source of the fifth PMOS transistor PMOS _5 is connected to the drain of the sixth PMOS transistor PMOS _6, the gate of the fifth PMOS transistor PMOS _5 is connected to the Mode control signal terminal (the signal input terminal corresponding to the Mode switching signal) in the Mode switching signal input line, the source of the sixth PMOS transistor PMOS _6 is connected to the V0 signal input terminal (the maximum voltage input terminal) in the electrical signal input line, the gate of the sixth PMOS transistor PMOS _6 is connected to the VIN signal input terminal in the electrical signal input line and the storage module 40, respectively, the connection structure of the storage module 40 is consistent with the storage modules in the above two embodiments, and the embodiments of the present invention are not repeated herein.
It should be noted that, in the embodiment of the present invention, the structure of the display circuit is not limited to the above-mentioned circuit structure, and the display circuit may have more structures according to practical applications, and in addition, the number of NMOS transistors and PMOS transistors is not limited to the number mentioned in the above-mentioned embodiment, and in addition, other electronic components may also be connected to the display circuit disclosed in the embodiment of the present invention, as long as the structure capable of implementing the technical solution of the embodiment of the present invention is within the protection scope of the present invention. Vth _ diode represents the starting voltage of the light emitting diode.
A display circuit and a display disclosed in the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (3)

1. A display circuit applied to an OLED display or an LED display comprises: the display device comprises a display driving module for receiving a static picture signal, a mode switching module for receiving the static picture switching signal, a light emitting diode and a storage module for storing the static picture signal;
the display driving module is respectively connected with a row driving module and a driving IC, the row driving module is connected with the driving IC, so that after the display driving module receives the static picture signal sent by a main control chip connected with the driving IC, the display driving module is disconnected with the row driving module and the driving IC and is connected with the mode switching module and the storage module;
the light emitting diode is connected with the storage module through the display driving module and the mode switching module so as to display the static picture signal;
wherein the display driving module includes: the first NMOS transistor, the first PMOS transistor and the first capacitor;
the grid electrode of the first NMOS tube is connected with the row driving module, the drain electrode of the first NMOS tube is connected with the driving IC, and the source electrode of the first NMOS tube is respectively connected with the first end of the first capacitor and the grid electrode of the first PMOS tube;
the source electrode of the first PMOS tube is connected with a power supply, and the drain electrode of the first PMOS tube is connected with the light-emitting diode;
correspondingly, the mode switching module comprises: the second NMOS tube, the second PMOS tube and the third NMOS tube;
the source electrode of the second NMOS tube is connected with the source electrode of the first NMOS tube;
the drain electrode of the second NMOS tube is connected with the drain electrode of the second PMOS tube;
the grid electrode of the second NMOS tube is connected with a signal input end corresponding to the mode switching signal;
the source electrode of the second PMOS tube is connected with the maximum voltage input end corresponding to the light-emitting diode, and the drain electrode of the third NMOS tube is connected with the minimum voltage input end corresponding to the light-emitting diode.
2. The display circuit of claim 1, wherein the storage module comprises: a first inverter and a second inverter;
the first end of the first inverter and the second end of the second inverter are respectively connected with the mode switching module;
a second terminal of the first inverter is connected to a first terminal of the second inverter.
3. A display comprising a display panel, in particular an OLED display or an LED display, further comprising a display circuit according to any one of claims 1-2, the display circuit being comprised in each sub-pixel of the display panel of the display.
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