CN114373417A - Display device and electronic apparatus - Google Patents
Display device and electronic apparatus Download PDFInfo
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- CN114373417A CN114373417A CN202210051068.7A CN202210051068A CN114373417A CN 114373417 A CN114373417 A CN 114373417A CN 202210051068 A CN202210051068 A CN 202210051068A CN 114373417 A CN114373417 A CN 114373417A
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The application discloses a display device and electronic equipment, the display device comprises a display panel and a source driver, the source driver is electrically connected with a feedback node and at least one pixel circuit in each pixel partition, the source driver can determine a voltage compensation value of the corresponding pixel partition according to a difference value of a preset voltage and a feedback voltage of each pixel partition, and output a power positive signal with a potential of the sum of the voltage compensation value and the feedback voltage to at least one pixel circuit in the corresponding pixel partition, the potential of the power positive signal received by the pixel circuit in each pixel partition can be respectively compensated, the potential of the power positive signal received by the pixel circuit in each pixel partition can be approximate or equal, and the light emitting brightness of each pixel circuit can be further uniformized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and electronic equipment.
Background
In a display device, each pixel circuit generally has a plurality of display functions, and each pixel circuit needs to access a power positive signal to power a light emitting device in the pixel circuit, because a difference exists between an output node of the power positive signal and a transmission path of each pixel circuit, and a voltage drop is easily generated in the transmission path during the transmission of the power positive signal, voltages of the power positive signals received by the pixel circuits in different areas are different, for example, a voltage of the power positive signal received by a pixel circuit far from the output node of the power positive signal is small, and a voltage of the power positive signal received by a pixel circuit near to the output node of the power positive signal is large, which may cause a difference in light emitting luminance of the pixel circuits in different areas of the display device.
Therefore, it is necessary to provide a display device in which the voltages of the positive power supply signals received by the pixel circuits in the respective regions are made to be approximately equal to each other.
It should be noted that the above description of the background art is only for the convenience of clear and complete understanding of the technical solutions of the present application. The technical solutions referred to above are therefore not considered to be known to the person skilled in the art, merely because they appear in the background of the present application.
Disclosure of Invention
The application provides a display device and an electronic device, which are used for relieving the technical problem that the voltage of a positive power signal received by each pixel circuit has large difference.
In a first aspect, the present application provides a display apparatus comprising a display panel and a source driver, the display panel comprising a plurality of pixel partitions, each pixel partition comprising a feedback node and at least one pixel circuit; the source driver is electrically connected with the feedback node to receive corresponding feedback voltage, determines a voltage compensation value of each corresponding pixel partition according to a difference value of the preset voltage and the feedback voltage of each pixel partition, and outputs a positive signal of a power supply to at least one pixel circuit in the corresponding pixel partition; the feedback voltage is the voltage of the positive power signal on the feedback node, and the preset voltage is the voltage of the positive power signal in the source driver; and the electric potential of the positive signal of the power supply is the sum of the voltage compensation value and the feedback voltage.
In some embodiments, the display panel includes a first pixel partition and a second pixel partition, the first pixel partition includes a first feedback node, the first feedback node is electrically connected to a first input terminal of the source driver to obtain a first feedback voltage of the first pixel partition, the source driver determines a first voltage compensation value of the first pixel partition according to a difference between a preset voltage and the first feedback voltage, and the source driver outputs a first power positive signal to a pixel circuit in the first pixel partition, a potential of the first power positive signal is a sum of the first voltage compensation value and the first feedback voltage; the second pixel partition comprises a second feedback node, the second feedback node is electrically connected with a second input end of the source driver to obtain a second feedback voltage of the second pixel partition, the source driver determines a second voltage compensation value of the second pixel partition according to a difference value of the preset voltage and the second feedback voltage, the source driver outputs a second power positive signal to a pixel circuit in the second pixel partition, and the potential of the second power positive signal is the sum of the second voltage compensation value and the second feedback voltage.
In some embodiments, the display panel further includes a third pixel partition, a fourth pixel partition, a fifth pixel partition, and a sixth pixel partition, the third pixel partition includes a third feedback node, the third feedback node is electrically connected to a third input terminal of the source driver to obtain a third feedback voltage of the third pixel partition, the source driver determines a third voltage compensation value of the third pixel partition according to a difference between the preset voltage and the third feedback voltage, and outputs a third power positive signal to a pixel circuit in the third pixel partition, where a potential of the third power positive signal is a sum of the third voltage compensation value and the third feedback voltage; the fourth pixel partition comprises a fourth feedback node, the fourth feedback node is electrically connected with a fourth input end of the source driver to obtain a fourth feedback voltage of the fourth pixel partition, the source driver determines a fourth voltage compensation value of the fourth pixel partition according to a difference value between the preset voltage and the fourth feedback voltage, and outputs a fourth power positive signal to a pixel circuit in the fourth pixel partition, and the potential of the fourth power positive signal is the sum of the fourth voltage compensation value and the fourth feedback voltage; the fifth pixel partition comprises a fifth feedback node, the fifth feedback node is electrically connected with a fifth input end of the source driver to obtain a fifth feedback voltage of the fifth pixel partition, the source driver determines a fifth voltage compensation value of the fifth pixel partition according to a difference value between a preset voltage and the fifth feedback voltage, and outputs a fifth power positive signal to a pixel circuit in the fifth pixel partition, wherein the potential of the fifth power positive signal is the sum of the fifth voltage compensation value and the fifth feedback voltage; the sixth pixel partition comprises a sixth feedback node, the sixth feedback node is electrically connected with a sixth input end of the source driver to obtain a sixth feedback voltage of the sixth pixel partition, the source driver determines a sixth voltage compensation value of the sixth pixel partition according to a difference value between the preset voltage and the sixth feedback voltage, the source driver outputs a sixth power positive signal to a pixel circuit in the sixth pixel partition, and the potential of the sixth power positive signal is the sum of the sixth voltage compensation value and the sixth feedback voltage.
In some embodiments, the first pixel partition, the second pixel partition, the third pixel partition, the fourth pixel partition, the fifth pixel partition, and the sixth pixel partition are distributed in a matrix.
In some embodiments, the display device further includes a voltage stabilizing circuit, an input terminal of the voltage stabilizing circuit is electrically connected to an output terminal of the source driver, and an output terminal of the voltage stabilizing circuit outputs a positive power signal to at least one pixel circuit in the corresponding pixel partition.
In some embodiments, the voltage stabilizing circuit includes a first resistor, an amplifier, a second resistor, and a third resistor, wherein one end of the first resistor is electrically connected to an output terminal of the source driver; the inverting input end of the amplifier is electrically connected with the other end of the first resistor; one end of the second resistor is electrically connected with one end of the first resistor, and the other end of the second resistor is electrically connected with the output end of the amplifier and at least one pixel circuit in the corresponding pixel partition; one end of the third resistor is electrically connected with the positive phase input end of the amplifier, and the other end of the third resistor is grounded; the resistance value of the first resistor is equal to that of the second resistor.
In some embodiments, the voltage stabilizing circuit further includes a fourth resistor, one end of the fourth resistor is electrically connected to the output terminal of the amplifier, and the other end of the fourth resistor is electrically connected to the other end of the second resistor.
In some embodiments, the voltage stabilizing circuit further includes a first capacitor, one end of the first capacitor is electrically connected to one end of the second resistor, and the other end of the first capacitor is electrically connected to the other end of the second resistor.
In some embodiments, the voltage of the positive power signal in the source driver is greater than or equal to 4.1V and less than or equal to 5.1V.
In a second aspect, the present application provides an electronic device including the display device in at least one of the above embodiments.
The application provides a display device and an electronic device, wherein the source driver is electrically connected with a feedback node and at least one pixel circuit in each pixel partition, the source driver can determine a voltage compensation value of the corresponding pixel partition according to a difference value between a preset voltage and a feedback voltage of each pixel partition, and output a power positive signal with a potential of the sum of the voltage compensation value and the feedback voltage to at least one pixel circuit in the corresponding pixel partition, so that the potential of the power positive signal received by the pixel circuit in each pixel partition can be compensated respectively, the potential of the power positive signal received by the pixel circuit in each pixel partition can be approximate to or equal, and the light emitting brightness of each pixel circuit can be further uniformized.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of a second structure of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a third display device according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a fourth structure of a display device according to an embodiment of the present application.
Fig. 5 is a schematic diagram illustrating a compensation process of a positive power signal according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
In view of the above-mentioned situation that the display device has uneven brightness, the present embodiment provides a software compensation technique, that is, the source driver collects brightness information of different positions under different gray scales, adjusts the data signal according to the corresponding gray scale and brightness, and then outputs the data signal with optimized voltage value to the corresponding pixel circuit, so as to also compensate the transmission voltage drop of the positive signal of the power supply.
As shown in fig. 1, the display device has a compensation point P1 for the positive power signal on the flexible circuit board, and since the compensation point is far from the pixel region of the display device, the voltage compensation effect for the positive power signal received by the pixel circuit in each pixel region is not obvious.
In view of this, the display device shown in fig. 2 has one compensation point P2 in the pixel region, but the number of compensation points P2 is small, so that the voltage of the positive power signal in each pixel region cannot be compensated in a fine manner; and when the power supply which outputs the positive signal of the power supply has larger self-fluctuation, the compensation effect is further influenced.
In summary, the above-mentioned several methods can be used to optimize the uniformity of the luminance display, but the compensation effect of different pixel regions is still very different.
Accordingly, the present embodiment further provides a display apparatus, as shown in fig. 3, the display apparatus includes a display panel 200 and a source driver 100, the display panel 200 includes a plurality of pixel partitions, for example, at least two of a pixel partition 210, a pixel partition 220, a pixel partition 230, a pixel partition 240, a pixel partition 250, and a pixel partition 260, each pixel partition includes a feedback node and at least one pixel circuit, for example, a feedback node F1 in the pixel partition 210, a feedback node F2 in the pixel partition 220, a feedback node F3 in the pixel partition 230, a feedback node F4 in the pixel partition 240, a feedback node F5 in the pixel partition 250, and a feedback node F6 in the pixel partition 260; the source driver 100 is electrically connected to the feedback node to receive a corresponding feedback voltage, the source driver 100 determines a voltage compensation value of a corresponding pixel partition according to a difference between a preset voltage and the feedback voltage of each pixel partition, and outputs a power positive signal to at least one pixel circuit in the corresponding pixel partition; wherein, the feedback voltage is a voltage of the positive power signal at the feedback node, and the preset voltage is a voltage of the positive power signal in the source driver 100; and the electric potential of the positive signal of the power supply is the sum of the voltage compensation value and the feedback voltage.
It can be understood that, in the display device provided in this embodiment, by electrically connecting the source driver 100 to the feedback node and the at least one pixel circuit in each pixel partition, the source driver 100 may determine a voltage compensation value of the corresponding pixel partition according to a difference between a preset voltage and a feedback voltage of each pixel partition, and output a power positive signal having a potential of a sum of the voltage compensation value and the feedback voltage to the at least one pixel circuit in the corresponding pixel partition, and may compensate the potential of the power positive signal received by the pixel circuit in each pixel partition, respectively, so that the potentials of the power positive signals received by the pixel circuits in each pixel partition are approximate to or equal to each other, and further, the light emitting brightness of each pixel circuit may be uniformized.
The first feedback voltage may be characterized as any one of a first feedback voltage, a second feedback voltage, a third feedback voltage, a fourth feedback voltage, a fifth feedback voltage, and a sixth feedback voltage. A positive power signal may also be characterized as any of a first positive power signal, a second positive power signal, a third positive power signal, a fourth positive power signal, a fifth positive power signal, and a sixth positive power signal.
In one embodiment, as shown in fig. 3, the display panel 200 includes a first pixel partition and a second pixel partition, the first pixel partition includes a first feedback node, the first feedback node is electrically connected to a first input terminal of the source driver 100 to obtain a first feedback voltage of the first pixel partition, the source driver 100 determines a first voltage compensation value of the first pixel partition according to a difference between a preset voltage and the first feedback voltage, and the source driver 100 outputs a first power positive signal to a pixel circuit in the first pixel partition, a potential of the first power positive signal is a sum of the first voltage compensation value and the first feedback voltage; the second pixel partition includes a second feedback node, the second feedback node is electrically connected to a second input terminal of the source driver 100 to obtain a second feedback voltage of the second pixel partition, the source driver 100 determines a second voltage compensation value of the second pixel partition according to a difference between a preset voltage and the second feedback voltage, and the source driver 100 outputs a second power positive signal to a pixel circuit in the second pixel partition, where a potential of the second power positive signal is a sum of the second voltage compensation value and the second feedback voltage.
It can be understood that, as the number of pixel partitions increases, the source driver 100 needs to detect more feedback voltages from each feedback node, and simultaneously needs to output more positive power signals to different pixel partitions, so that the positive power signals of each pixel partition can be correspondingly compensated, which is beneficial to uniformizing the voltages of the positive power signals output to each pixel circuit, thereby improving the brightness uniformity of the display device.
In one embodiment, as shown in fig. 3, the display panel 200 further includes a third pixel partition, a fourth pixel partition, a fifth pixel partition, and a sixth pixel partition, where the third pixel partition includes a third feedback node, the third feedback node is electrically connected to a third input terminal of the source driver 100 to obtain a third feedback voltage of the third pixel partition, the source driver 100 determines a third voltage compensation value of the third pixel partition according to a difference between the preset voltage and the third feedback voltage, and the source driver 100 outputs a third power positive signal to a pixel circuit in the third pixel partition, and a potential of the third power positive signal is a sum of the third voltage compensation value and the third feedback voltage; the fourth pixel partition comprises a fourth feedback node, the fourth feedback node is electrically connected with a fourth input end of the source driver 100 to obtain a fourth feedback voltage of the fourth pixel partition, the source driver 100 determines a fourth voltage compensation value of the fourth pixel partition according to a difference value between the preset voltage and the fourth feedback voltage, the source driver 100 outputs a fourth power positive signal to a pixel circuit in the fourth pixel partition, and the potential of the fourth power positive signal is the sum of the fourth voltage compensation value and the fourth feedback voltage; the fifth pixel partition comprises a fifth feedback node, the fifth feedback node is electrically connected with a fifth input end of the source driver 100 to obtain a fifth feedback voltage of the fifth pixel partition, the source driver 100 determines a fifth voltage compensation value of the fifth pixel partition according to a difference value between a preset voltage and the fifth feedback voltage, the source driver 100 outputs a fifth power positive signal to a pixel circuit in the fifth pixel partition, and the potential of the fifth power positive signal is the sum of the fifth voltage compensation value and the fifth feedback voltage; the sixth pixel partition comprises a sixth feedback node, the sixth feedback node is electrically connected with a sixth input end of the source driver 100 to obtain a sixth feedback voltage of the sixth pixel partition, the source driver 100 determines a sixth voltage compensation value of the sixth pixel partition according to a difference value between a preset voltage and the sixth feedback voltage, the source driver 100 outputs a sixth power positive signal to a pixel circuit in the sixth pixel partition, and the potential of the sixth power positive signal is the sum of the sixth voltage compensation value and the sixth feedback voltage.
It can be understood that, in the present embodiment, the number of the pixel partitions is increased to six, the source driver 100 needs to detect more feedback voltages from each feedback node, and needs to output more positive power signals to different pixel partitions, so that the positive power signals of each pixel partition can be correspondingly compensated, which is beneficial to further uniformizing the voltages of the positive power signals output to each pixel circuit, and further improving the brightness uniformity of the display device.
The area of each pixel partition or the number of pixel circuits in each pixel partition can be equal, so that each pixel partition can be uniformly divided, the voltage distribution of the positive power supply signal in each pixel partition can be closer, and the brightness uniformity among the pixel partitions is further improved.
In one embodiment, the first pixel partition, the second pixel partition, the third pixel partition, the fourth pixel partition, the fifth pixel partition and the sixth pixel partition are distributed in a matrix. For example, the matrix distribution may be three rows and two columns, where the pixel partitions of the first column may include the pixel partition 210, the pixel partition 230, and the pixel partition 250, and the pixel partitions of the second column may include the pixel partition 220, the pixel partition 240, and the pixel partition 260; the pixel partitions of the first row may include pixel partitions 210 and 220, the pixel partitions of the second row may include pixel partitions 230 and 240, and the pixel partitions of the third row may include pixel partitions 250 and 260.
The first pixel partition, the second pixel partition, the third pixel partition, the fourth pixel partition, the fifth pixel partition, and the sixth pixel partition may respectively and individually correspond to one of the pixel partition 210, the pixel partition 220, the pixel partition 230, the pixel partition 240, the pixel partition 250, and the pixel partition 260, for example, the first pixel partition may be one of the pixel partition 210, the pixel partition 220, the pixel partition 230, the pixel partition 240, the pixel partition 250, and the pixel partition 260, the second pixel partition may be another one of the pixel partition 210, the pixel partition 220, the pixel partition 230, the pixel partition 240, the pixel partition 250, and the pixel partition 260, the third pixel partition may be one of the pixel partition 210, the pixel partition 220, the pixel partition 230, the pixel partition 240, the pixel partition 250, the pixel partition 260, and so on.
In one embodiment, as shown in fig. 4, the display device further includes a voltage regulator circuit 300, an input terminal of the voltage regulator circuit 300 is electrically connected to an output terminal of the source driver 100, and an output terminal of the voltage regulator circuit 300 outputs a positive power signal to at least one pixel circuit in the corresponding pixel partition.
It is understood that the voltage stabilizing circuit 300 of the present embodiment can stabilize the positive power signal output from any output terminal of the source driver 100 to reduce the fluctuation of the positive power signal.
In one embodiment, the voltage regulator circuit 300 includes a first resistor R2, an amplifier OP1, a second resistor R3 and a third resistor R1, wherein one end of the first resistor R2 is electrically connected to an output terminal of the source driver 100; the inverting input end of the amplifier OP1 is electrically connected with the other end of the first resistor R2; one end of the second resistor R3 is electrically connected to one end of the first resistor R2, and the other end of the second resistor R3 is electrically connected to the output end of the amplifier OP1 and at least one pixel circuit in the corresponding pixel partition; one end of the third resistor R1 is electrically connected to the non-inverting input terminal of the amplifier OP1, and the other end of the third resistor R1 is grounded; the resistance of the first resistor R2 is equal to the resistance of the second resistor R3.
It should be noted that, the resistance value of the first resistor R2 is equal to the resistance value of the second resistor R3, so that the voltage at the input end of the voltage regulator circuit 300 is equal to the voltage at the output end, and the voltage regulation function of the voltage regulator circuit 300 is further achieved.
In one embodiment, the voltage stabilizing circuit 300 further includes a fourth resistor R4, one end of the fourth resistor R4 is electrically connected to the output terminal of the amplifier OP1, and the other end of the fourth resistor R4 is electrically connected to the other end of the second resistor R3.
It should be noted that, in the embodiment, the fourth resistor R4 is added, so that the voltage of the output power positive signal can be adjusted as required, and the voltage regulator circuit 300 can implement more voltage regulation functions with a simpler structure, so as to meet the requirements of the display device.
In one embodiment, the voltage regulation circuit 300 further includes a first capacitor C1, one end of the first capacitor C1 is electrically connected to one end of the second resistor R3, and the other end of the first capacitor C1 is electrically connected to the other end of the second resistor R3.
It should be noted that, in the present embodiment, the first capacitor C1 is added, and due to the coupling effect of the first capacitor C1, the input voltage and the output voltage of the voltage regulator circuit 300 can be further constant.
In one embodiment, the voltage of the positive power signal in the source driver 100 is greater than or equal to 4.1V and less than or equal to 5.1V. Preferably, the voltage of the power positive signal may be 4.6V.
It should be noted that, compared to the power management chip, since the mounting position of the source driver 100 is closer to the display panel 200, the voltage drop loss of the positive power signal can be further reduced by performing fine adjustment on the voltage of the positive power signal in the source driver 100 in the present embodiment.
Fig. 5 is a schematic diagram illustrating a compensation process of the positive power signal in the source driver 100, wherein the ordinate represents the voltage of the positive power signal ELVDD, the abscissa represents the time t, and the curve S1 represents the variation of the positive power signal ELVDD with time t at a certain feedback node, and it can be seen that the curve S1 has a large voltage fluctuation before compensation; the curve S2 represents one set of voltage compensation values corresponding to the curve S1; the curve S3 is a curve of the compensated power positive signal voltage changing with time, and can be obtained by superimposing the point value corresponding to the first time in the curve S1 and the point value corresponding to the first time in the curve S2, and it can be seen that the voltage of the power positive signal received by each pixel circuit in the curve S3 is relatively smooth and stable.
In one embodiment, as shown in fig. 5, the source driver 100 may collect the feedback voltage of each feedback node, and then the source driver 100 may give the compensation voltage with the opposite phase, so as to stabilize the actual voltage of the positive power signal in the display panel 200 and reduce the voltage drop loss.
In one embodiment, the present embodiment provides an electronic device, which includes the display device in at least one of the above embodiments.
It can be understood that, in the electronic device provided in this embodiment, by electrically connecting the source driver 100 to the feedback node and the at least one pixel circuit in each pixel partition, the source driver 100 may determine a voltage compensation value of the corresponding pixel partition according to a difference between a preset voltage and a feedback voltage of each pixel partition, and output a power positive signal having a potential of a sum of the voltage compensation value and the feedback voltage to the at least one pixel circuit in the corresponding pixel partition, and may compensate the potential of the power positive signal received by the pixel circuit in each pixel partition, respectively, so that the potentials of the power positive signals received by the pixel circuits in each pixel partition are approximate to or equal to each other, and further, the light emitting brightness of each pixel circuit may be uniformized.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display device and the electronic device provided in the embodiments of the present application are described in detail above, and specific examples are applied in the description to explain the principle and the implementation of the present application, and the description of the embodiments above is only used to help understanding the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A display device, comprising:
a display panel comprising a plurality of pixel partitions, each pixel partition comprising a feedback node and at least one pixel circuit; and
the source driver is electrically connected with the feedback node to receive corresponding feedback voltage, determines a voltage compensation value corresponding to each pixel partition according to a difference value between preset voltage and the feedback voltage of each pixel partition, and outputs a positive signal of a power supply to at least one pixel circuit in the corresponding pixel partition;
wherein the feedback voltage is a voltage of the power positive signal on the feedback node, and the preset voltage is a voltage of the power positive signal in the source driver; and the electric potential of the positive signal of the power supply is the sum of the voltage compensation value and the feedback voltage.
2. The display device according to claim 1, wherein the display panel comprises:
a first pixel partition, where the first pixel partition includes a first feedback node, the first feedback node is electrically connected to a first input terminal of the source driver to obtain a first feedback voltage of the first pixel partition, the source driver determines a first voltage compensation value of the first pixel partition according to a difference between the preset voltage and the first feedback voltage, and outputs a first power positive signal to a pixel circuit in the first pixel partition, and a potential of the first power positive signal is a sum of the first voltage compensation value and the first feedback voltage; and
the second pixel partition comprises a second feedback node, the second feedback node is electrically connected with a second input end of the source driver to obtain a second feedback voltage of the second pixel partition, the source driver determines a second voltage compensation value of the second pixel partition according to a difference value between the preset voltage and the second feedback voltage, and outputs a second power positive signal to a pixel circuit in the second pixel partition, wherein the potential of the second power positive signal is the sum of the second voltage compensation value and the second feedback voltage.
3. The display device according to claim 2, wherein the display panel further comprises:
a third pixel partition, where the third pixel partition includes a third feedback node, the third feedback node is electrically connected to a third input terminal of the source driver to obtain a third feedback voltage of the third pixel partition, the source driver determines a third voltage compensation value of the third pixel partition according to a difference between the preset voltage and the third feedback voltage, and outputs a third power positive signal to a pixel circuit in the third pixel partition, and a potential of the third power positive signal is a sum of the third voltage compensation value and the third feedback voltage;
a fourth pixel partition, where the fourth pixel partition includes a fourth feedback node, the fourth feedback node is electrically connected to a fourth input terminal of the source driver to obtain a fourth feedback voltage of the fourth pixel partition, the source driver determines a fourth voltage compensation value of the fourth pixel partition according to a difference between the preset voltage and the fourth feedback voltage, and outputs a fourth power positive signal to a pixel circuit in the fourth pixel partition, and a potential of the fourth power positive signal is a sum of the fourth voltage compensation value and the fourth feedback voltage;
a fifth pixel partition, where the fifth pixel partition includes a fifth feedback node, the fifth feedback node is electrically connected to a fifth input terminal of the source driver to obtain a fifth feedback voltage of the fifth pixel partition, the source driver determines a fifth voltage compensation value of the fifth pixel partition according to a difference between the preset voltage and the fifth feedback voltage, and outputs a fifth power positive signal to a pixel circuit in the fifth pixel partition, and a potential of the fifth power positive signal is a sum of the fifth voltage compensation value and the fifth feedback voltage; and
the sixth pixel partition comprises a sixth feedback node, the sixth feedback node is electrically connected with a sixth input end of the source driver to obtain a sixth feedback voltage of the sixth pixel partition, the source driver determines a sixth voltage compensation value of the sixth pixel partition according to a difference value between the preset voltage and the sixth feedback voltage, and outputs a sixth power positive signal to a pixel circuit in the sixth pixel partition, wherein the potential of the sixth power positive signal is the sum of the sixth voltage compensation value and the sixth feedback voltage.
4. The display device according to claim 3, wherein the first pixel partition, the second pixel partition, the third pixel partition, the fourth pixel partition, the fifth pixel partition, and the sixth pixel partition are arranged in a matrix.
5. The display device according to claim 1, further comprising a voltage regulator circuit, wherein an input terminal of the voltage regulator circuit is electrically connected to an output terminal of the source driver, and an output terminal of the voltage regulator circuit outputs the power positive signal to at least one pixel circuit in the corresponding pixel partition.
6. The display device according to claim 5, wherein the voltage stabilizing circuit comprises:
one end of the first resistor is electrically connected with one output end of the source driver;
the inverting input end of the amplifier is electrically connected with the other end of the first resistor;
one end of the second resistor is electrically connected with one end of the first resistor, and the other end of the second resistor is electrically connected with the output end of the amplifier and at least one pixel circuit in the corresponding pixel partition; and
one end of the third resistor is electrically connected with the positive phase input end of the amplifier, and the other end of the third resistor is grounded;
and the resistance value of the first resistor is equal to that of the second resistor.
7. The display device according to claim 6, wherein the voltage regulator circuit further comprises a fourth resistor, one end of the fourth resistor is electrically connected to the output terminal of the amplifier, and the other end of the fourth resistor is electrically connected to the other end of the second resistor.
8. The display device according to claim 7, wherein the voltage regulator circuit further comprises a first capacitor, one end of the first capacitor is electrically connected to one end of the second resistor, and the other end of the first capacitor is electrically connected to the other end of the second resistor.
9. The display device according to any one of claims 1 to 8, wherein a voltage of the power positive signal in the source driver is greater than or equal to 4.1V and less than or equal to 5.1V.
10. An electronic apparatus characterized by comprising the display device according to any one of claims 1 to 9.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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