Operational amplification circuit, compensation voltage system and display device

Abstract

The invention relates to the technical field of display, and discloses an operational amplifier circuit, a compensation voltage system and a display device.The operational amplifier circuit comprises an operational amplifier, a data transmission port, a first adjustment sub-circuit, a second adjustment sub-circuit and an adjustable jumper resistor, the first adjusting sub-circuit is connected between the first input end and the negative input end of the operational amplifier and used for adjusting the capacitance value and / or the resistance value between the first input end and the negative input end, and the second adjusting sub-circuit is connected between the second input end and the positive input end of the operational amplifier and used for adjusting the capacitance value and / or the resistance value between the second input end and the negative input end. The operational amplifier is used for adjusting a capacitance value and / or a resistance value between the second input end and the positive input end, the operational amplifier responds to signals of the first input end and the second input end, and flexible setting of parameters of the operational amplifier circuit is achieved through arrangement of the first adjusting sub-circuit, the second adjusting sub-circuit and the adjustable bridging resistor. And the flicker condition of the display panel is reduced.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and provides an operational amplifier circuit, a compensation voltage system, and a display device. Background Art

[0002] In related technologies, the standard Vcom voltage of a display panel will cause the Vcom voltage at the far end of the display panel to decay as the common electrode line extends, especially in large-size panels. The current compensation method is to collect the actual Vcom voltages at different points of the display panel. After comparing the actual Vcom voltage with the standard Vcom voltage through an operational amplifier circuit, the compensation Vcom value for power supply to the far end is obtained. However, the resistors and capacitors in the existing operational amplifier circuit are all fixed values, which cannot well solve the compensation situation and still cause the panel to flicker. Summary of the Invention

[0003] Embodiments of the present application provide an operational amplifier circuit, a compensation voltage system, and a display device to flexibly set the parameters of the operational amplifier circuit and reduce the flicker of the display panel.

[0004] The specific technical solutions provided by the present application are as follows:

[0005] In a first aspect, an embodiment of the present application provides an operational amplifier circuit, including: an operational amplifier, a data transmission port, a first adjustment sub-circuit, a second adjustment sub-circuit, and an adjustable jumper resistor;

[0006] The first adjustment sub-circuit is connected between the first input terminal and the negative input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the first input terminal and the negative input terminal in response to the signal of the data transmission port;

[0007] The second adjustment sub-circuit is connected between the second input terminal and the positive input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the second input terminal and the positive input terminal in response to the signal of the data transmission port;

[0008] The operational amplifier is configured to respond to the signals of the first input terminal and the second input terminal after the capacitance value and / or resistance value of the first adjustment sub-circuit are determined, the capacitance value and / or resistance value of the second adjustment sub-circuit are determined, and the resistance value of the adjustable jumper resistor is determined.

[0009] Optionally, the first adjustment sub-circuit includes: a first adjustable capacitor and a first adjustable resistor;

[0010] The first end of the first adjustable capacitor is coupled to the first input terminal, and the second end of the first adjustable capacitor is coupled to the first end of the first adjustable resistor, and is configured to adjust the first capacitance value in response to a first capacitance value adjustment signal loaded on the data transmission port;

[0011] The second end of the first adjustable resistor is coupled to the negative input terminal of the operational amplifier, and is configured to adjust the first resistance value in response to a first resistance value adjustment signal loaded on the data transmission port.

[0012] Optionally, the second adjustment sub-circuit includes: a second adjustable capacitor and a second adjustable resistor;

[0013] The first end of the second adjustable capacitor is coupled to the second input terminal, and the second end of the second adjustable capacitor is coupled to the first end of the second adjustable resistor, and is configured to adjust the second capacitance value in response to a second capacitance value adjustment signal loaded on the data transmission port;

[0014] The second end of the second adjustable resistor is coupled to the positive input terminal of the operational amplifier, and is configured to adjust the second resistance value in response to a second resistance value adjustment signal loaded on the data transmission port.

[0015] Optionally, the first end of the adjustable bridging resistor is coupled to the second end of the first adjustable resistor, and the second end of the adjustable bridging resistor is coupled to the output terminal of the operational amplifier, and is configured to adjust the third resistance value in response to a third resistance value adjustment signal loaded on the data transmission port.

[0016] In a second aspect, an embodiment of the present application further provides a compensation chip, including: at least one positive input terminal, at least one negative input terminal, at least one chip output terminal, and at least one operational amplifier circuit as described in any one of the above, wherein at least one positive input terminal, at least one negative input terminal, at least one chip output terminal, and at least one operational amplifier circuit correspond one-to-one;

[0017] The first input terminal of the operational amplifier circuit is connected to the corresponding positive input terminal, and the positive input terminal is configured to receive the common voltage value of the display panel;

[0018] The second input terminal of the operational amplifier circuit is connected to the corresponding negative input terminal, and the negative input terminal is configured to receive the feedback voltage value of the display panel;

[0019] The operational amplifier circuit is configured to output a compensation voltage value according to the common voltage value and the feedback voltage value.

[0020] Optionally, it further includes: a data transmission bus;

[0021] The data transmission ports of at least some of the operational amplifier circuits are coupled to the data transmission bus.

[0022] Optionally, the communication protocol of the data transmission bus is the I2C protocol.

[0023] In a third aspect, an embodiment of the present application further provides a compensation voltage system, including: a processing circuit and the compensation chip of any one of the above;

[0024] The processing circuit is coupled to the display panel and is configured to obtain a flicker value of the display panel, a common voltage value input to the display panel, and a feedback voltage value collected from a common electrode of the display panel. When the flicker value is less than a preset threshold range, the processing circuit determines adjustment data according to the common voltage value and the feedback voltage value, and sends the adjustment data to the compensation chip, where the adjustment data includes a first resistance value of a first adjustable resistor, a second resistance value of a second adjustable resistor, a first capacitance value of a first adjustable capacitor, a second capacitance value of a second adjustable capacitor, and / or a third resistance value of an adjustable jumper resistor;

[0025] The compensation chip is configured to set the resistance value of the first adjustable resistor to the first resistance value, set the resistance value of the second adjustable resistor to the second resistance value, set the capacitance value of the first adjustable capacitor to the first capacitance value, set the capacitance value of the second adjustable capacitor to the second capacitance value, and / or set the resistance value of the adjustable jumper resistor to the third resistance value according to the received adjustment data.

[0026] In a fourth aspect, an embodiment of the present application further provides a display device, including: a display panel and the above compensation voltage system;

[0027] At least one acquisition point is arranged on the display panel. The acquisition point is coupled to the common electrode. The display panel is coupled to the compensation chip. The compensation chip is connected to at least one acquisition point. The acquisition point is configured to acquire at least one common voltage value of the display panel.

[0028] Optionally, at least one compensation point is arranged on the display panel. The compensation point is coupled to the common electrode of the display panel and is configured to provide at least one compensation voltage value to the display panel.

[0029] Optionally, the common electrode is distributed on one side of the display panel, and the acquisition point and the compensation point are arranged on the side away from the common electrode.

[0030] The beneficial effects of the present application are as follows:

[0031] In summary, an operational amplifier circuit, a compensation voltage system, and a display device are provided in the embodiments of the present application. The operational amplifier circuit includes: an operational amplifier, a data transmission port, a first adjustment sub-circuit, a second adjustment sub-circuit, and an adjustable jumper resistor. The first adjustment sub-circuit is connected between the first input terminal and the negative input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the first input terminal and the negative input terminal in response to the signal of the data transmission port. The second adjustment sub-circuit is connected between the second input terminal and the positive input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the second input terminal and the positive input terminal in response to the signal of the data transmission port. The operational amplifier is configured to respond to the signals of the first input terminal and the second input terminal after the capacitance value and / or resistance value of the first adjustment sub-circuit are determined, the capacitance value and / or resistance value of the second adjustment sub-circuit are determined, and the resistance value of the adjustable jumper resistor is determined. Through the settings of the first adjustment sub-circuit, the second adjustment sub-circuit, and the adjustable jumper resistor, flexible setting of the parameters of the operational amplifier circuit is achieved, so that the common voltage at the far end of the display panel can be better compensated, and the flicker of the display panel is reduced.

[0032] Other features and advantages of the present application will be described in the following specification, and some of them will become obvious from the specification or be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written specification, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0034] Figure 1 is a connection schematic diagram of an operational amplifier circuit in an embodiment of the present application;

[0035] Figure 2 is a circuit connection diagram of an operational amplifier circuit in an embodiment of the present application;

[0036] Figure 3 is a circuit connection diagram of the first compensation chip in an embodiment of the present application;

[0037] Figure 4 is a circuit connection diagram of the second compensation chip in an embodiment of the present application;

[0038] Figure 5 is a connection schematic diagram of a compensation voltage system in an embodiment of the present application;

[0039] Figure 6Schematic diagram of a display interface in an embodiment of the present application;

[0040] Figure 7 Schematic diagram of a display device in an embodiment of the present application. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments described in this application document without creative efforts belong to the scope protected by the technical solutions of the present application.

[0042] Terms such as "first" and "second" in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0043] In the related art, the standard Vcom voltage of the display panel will cause the Vcom voltage attenuation at the far end of the display panel as the common electrode line extends, especially more obvious in large-size panels. The current compensation method is to collect the actual Vcom voltages at different points of the display panel. After comparing the actual Vcom voltage with the standard Vcom voltage through an operational amplifier circuit, the compensated Vcom value for power supply to the far end is obtained. However, each resistor and capacitor in the existing operational amplifier circuit are fixed values, which cannot well solve the compensation situation and still cause the panel to flicker.

[0044] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0045] Refer to Figure 1 As shown, an operational amplifier circuit proposed in an embodiment of the present application includes: an operational amplifier 10, a data transmission port 20, a first adjustment sub-circuit 30, a second adjustment sub-circuit 40, and a tunable bridging resistor RF.

[0046] Refer to Figure 1 As shown, the first adjustment sub-circuit 30 is connected between the first input terminal and the negative input terminal of the operational amplifier 10, and is configured to adjust the capacitance value and / or resistance value between the first input terminal and the negative input terminal in response to the signal of the data transmission port 20.

[0047] In the embodiments of the present application, the above-mentioned first adjustment sub-circuit 30 includes electronic components such as resistors and capacitors with adjustable values. During the implementation process, after the data transmission port 20 sends a signal to the first adjustment sub-circuit 30, the first adjustment sub-circuit 30 adjusts the corresponding capacitance value and / or resistance value according to the above-mentioned signal, so as to adjust the capacitance value and / or resistance value between the first input end and the negative input end.

[0048] Referring to Figure 2 As shown, the above-mentioned first adjustment sub-circuit 30 includes: a first adjustable capacitor C- and a first adjustable resistor R-.

[0049] The first end of the first adjustable capacitor C- is coupled to the first input end, and the second end of the first adjustable capacitor C- is coupled to the first end of the first adjustable resistor R-, and is configured to adjust the first capacitance value in response to the first capacitance value adjustment signal loaded by the data transmission port 20.

[0050] Exemplarily, the above-mentioned first adjustable capacitor C- can be a combination of parallel or series connection of multiple capacitors. During the implementation process, after the first adjustable capacitor C- receives the first capacitance value adjustment signal loaded by the data transmission port 20, it matches the parallel or series combination of certain capacitors with equal capacitance values according to the above-mentioned first capacitance value adjustment signal, so as to adjust the capacitance value of the first adjustable capacitor C- to the first capacitance value.

[0051] The second end of the first adjustable resistor R- is coupled to the negative input end of the operational amplifier 10, and is configured to adjust the first resistance value in response to the first resistance value adjustment signal loaded by the data transmission port 20.

[0052] Exemplarily, the above-mentioned first adjustable resistor R- can be a combination of parallel or series connection of multiple resistors. During the implementation process, after the first adjustable resistor R- receives the first resistance value adjustment signal loaded by the data transmission port 20, it matches the parallel or series combination of certain resistors with equal resistance values according to the above-mentioned first resistance value adjustment signal, so as to adjust the resistance value of the first adjustable resistor R- to the first resistance value.

[0053] Exemplarily, the above-mentioned first adjustable resistor R- can also be a varistor, a thermistor, etc. During the implementation process, the first resistance value adjustment signal loaded by the data transmission port 20 directly changes the sensitivity coefficient of the first adjustable resistor R-.

[0054] The second adjustment sub-circuit 40 is connected between the second input end and the positive input end of the operational amplifier 10, and is configured to adjust the capacitance value and / or resistance value between the second input end and the positive input end in response to the signal of the data transmission port 20.

[0055] In the embodiments of the present application, the second adjustment sub-circuit 40 includes electronic components such as resistors and capacitors whose values can be adjusted. During implementation, after the data transmission port 20 sends a signal to the second adjustment sub-circuit 40, the second adjustment sub-circuit 40 adjusts the corresponding capacitance value and / or resistance value according to the above signal, so that the capacitance value and / or resistance value between the second input end and the positive input end is adjusted.

[0056] Referring to Figure 2 As shown, the second adjustment sub-circuit 40 includes: a second adjustable capacitor C+ and a second adjustable resistor R+.

[0057] The first end of the second adjustable capacitor C+ is coupled to the second input end, and the second end of the second adjustable capacitor C+ is coupled to the first end of the second adjustable resistor R+, and is configured to adjust the second capacitance value in response to the second capacitance value adjustment signal loaded by the data transmission port 20.

[0058] Similarly, the second adjustable capacitor C+ can be a combination of multiple capacitors in parallel or in series. During implementation, after the second adjustable capacitor C+ receives the second capacitance value adjustment signal loaded by the data transmission port 20, it matches a combination of parallel or series connections of several capacitors with equal capacitance values according to the above second capacitance value adjustment signal, so as to adjust the capacitance value of the second adjustable capacitor C+ to the second capacitance value.

[0059] The second end of the second adjustable resistor R+ is coupled to the positive input end of the operational amplifier 10, and is configured to adjust the second resistance value in response to the second resistance value adjustment signal loaded by the data transmission port 20.

[0060] Similarly, the second adjustable resistor R+ can be a combination of multiple resistors in parallel or in series. During implementation, after the second adjustable resistor R+ receives the second resistance value adjustment signal loaded by the data transmission port 20, it matches a combination of parallel or series connections of several resistors with equal resistance values according to the above second resistance value adjustment signal, so as to adjust the resistance value of the second adjustable resistor R+ to the second resistance value.

[0061] Similarly, the second adjustable resistor R+ can also be a varistor, a thermistor, etc. During implementation, the second resistance value adjustment signal loaded by the data transmission port 20 can directly change the sensitivity coefficient of the second adjustable resistor R+.

[0062] Referring to Figure 2 As shown, the first end of the adjustable bridging resistor RF is coupled to the second end of the first adjustable resistor R-, and the second end of the adjustable bridging resistor RF is coupled to the output end of the operational amplifier 10, and is configured to adjust the third resistance value in response to the third resistance value adjustment signal loaded by the data transmission port 20.

[0063] Similarly, by way of example, the above adjustable bridging resistor RF may be a combination of parallel or series connection of multiple resistors. During implementation, after receiving the third resistance adjustment signal loaded by the data transmission port 20, the adjustable bridging resistor RF matches a parallel or series combination of certain resistors with equal resistance values according to the above third resistance adjustment signal, so as to adjust the resistance value of the adjustable bridging resistor RF to the third resistance value.

[0064] Exemplarily, the above adjustable bridging resistor RF may also be a varistor, a thermistor, etc. During implementation, the third resistance adjustment signal loaded by the data transmission port 20 can directly change the sensitivity coefficient of the adjustable bridging resistor RF.

[0065] The operational amplifier 10 is configured to respond to the signals at the first input terminal and the second input terminal after the capacitance value and / or the resistance value of the first adjustment sub-circuit 30 is determined, the capacitance value and / or the resistance value of the second adjustment sub-circuit 40 is determined, and the resistance value of the adjustable bridging resistor RF is determined.

[0066] During implementation, when the capacitance value and / or the resistance value of the first adjustment sub-circuit 30 is determined, that is, after the capacitance value of the first adjustable capacitor C- included in the first adjustment sub-circuit 30 is determined and the resistance value of the first adjustable resistor R- is determined, and when the capacitance value and / or the resistance value of the second adjustment sub-circuit 40 is determined, that is, after the capacitance value of the second adjustable capacitor C+ included in the second adjustment sub-circuit 40 is determined and the resistance value of the second adjustable resistor R+ is determined, and after the resistance value of the adjustable bridging resistor RF is determined, the operational amplifier 10 can, based on the above various resistors and capacitors, respond to the signals at the first input terminal and the second input terminal to calculate the compensation voltage value.

[0067] Based on the same inventive concept, an embodiment of the present application provides a compensation chip 200. Refer to Figure 3 as shown, including: at least one positive input terminal VIN+, at least one negative input terminal VIN-, at least one chip output terminal Vout, and at least one operational amplifier circuit as described in any one of the above, wherein at least one positive input terminal VIN+, at least one negative input terminal VIN-, at least one chip output terminal Vout, and at least one operational amplifier circuit correspond one by one.

[0068] During implementation, the above operational amplifier circuit can only respond to the signals at one first input terminal and the second input terminal and obtain one compensation voltage value. For the convenience of use, in the present application, at least one of the above operational amplifier circuits is packaged to obtain the compensation chip 200. In this way, when it is necessary to calculate multiple compensation voltage values simultaneously, multiple operational amplifier circuits can be selected and enabled in the above compensation chip 200 to work simultaneously, so as to respond to different signals respectively and obtain multiple compensation voltage values.

[0069] Of course, in some embodiments, an above-mentioned operational amplifier circuit can also be separately encapsulated into a compensation chip 200. When multiple compensation voltage values need to be calculated simultaneously, multiple compensation chips 200 can be selected to work separately to respond to different signals respectively and obtain multiple compensation voltage values.

[0070] It should be noted that, referring to Figure 4 As shown, multiple ports are provided in the above-mentioned compensation chip 200, including but not limited to a positive input terminal VIN+, a negative input terminal VIN−, and a chip output terminal Vout. The numbers of the above-mentioned positive input terminal VIN+, negative input terminal VIN−, and chip output terminal Vout are equal to the number of operational amplifier circuits.

[0071] The first input terminal of the operational amplifier circuit is connected to the corresponding positive input terminal VIN+. The positive input terminal VIN+ is configured to receive the common voltage value of the display panel.

[0072] Exemplarily, the first input terminal of the above-mentioned operational amplifier circuit is connected to the corresponding positive input terminal VIN+ of the compensation chip 200. During implementation, after the common voltage value of the display panel is collected, the common voltage value is sent to the positive input terminal VIN+, that is, the positive input terminal VIN+ receives the common voltage value of the display panel, and then the common voltage value is input into the operational amplifier circuit through the first input terminal for processing.

[0073] The second input terminal of the operational amplifier circuit is connected to the corresponding negative input terminal VIN−. The negative input terminal VIN− is configured to receive the feedback voltage value of the display panel.

[0074] Exemplarily, the second input terminal of the above-mentioned operational amplifier circuit is connected to the corresponding negative input terminal VIN− of the compensation chip 200. During implementation, after the feedback voltage value of the display panel is collected, the feedback voltage value is sent to the negative input terminal VIN−, that is, the negative input terminal VIN− receives the feedback voltage value of the display panel, and then the feedback voltage value is input into the operational amplifier circuit through the second input terminal for processing.

[0075] The operational amplifier circuit is configured to output a compensation voltage value according to the common voltage value and the feedback voltage value.

[0076] During implementation, after the operational amplifier circuit receives the common voltage value through the first input terminal and receives the feedback voltage value through the second input terminal, it calculates the compensation voltage value according to the above-mentioned common voltage value and the feedback voltage value, and provides the compensation voltage value to the connected chip output terminal Vout through the output terminal of the operational amplifier circuit, and outputs the compensation voltage value through the chip output terminal Vout.

[0077] The above-mentioned compensation chip 200 further includes: a data transmission bus.

[0078] The data transmission port 20 of at least part of the operational amplifier circuit is coupled to the data transmission bus.

[0079] Since there are multiple operational amplifier circuits in the compensation chip 200, there will be multiple corresponding data transmission ports 20. To save wiring, a data transmission bus is provided in the compensation chip 200, and the data transmission ports 20 of at least part of the operational amplifier circuits are coupled to the data transmission bus. In this way, the wiring arrangement in the compensation chip 200 can be effectively saved.

[0080] The communication protocol of the above data transmission bus is the I2C protocol.

[0081] The communication protocol of the above data transmission bus is the I2C protocol. The I2C protocol is a protocol that allows multiple "slave" chips and one or more "master" chips to perform serial communication and is suitable for short-distance communication. During implementation, the above first capacitance adjustment signal, first resistance adjustment signal, second capacitance adjustment signal, second resistance adjustment signal, third resistance adjustment signal, etc. are all serially transmitted by the above data transmission bus and are correspondingly forwarded to the data transmission ports 20 of the corresponding operational amplifier circuits. When the data transmission bus uses the I2C protocol, the data transmission bus includes two lines, SDA and SCL, and the corresponding data transmission ports 20 will receive the signals of both SDA and SCL lines simultaneously.

[0082] Based on the same inventive concept, an embodiment of the present application provides a compensation voltage system. Refer to Figure 5 as shown, including: a processing circuit 100 and the compensation chip 200 of any one of the above.

[0083] The processing circuit 100 is coupled to the display panel and is configured to obtain the flicker value of the display panel, the common voltage value input to the display panel, and the feedback voltage value collected from the common electrode of the display panel. When the flicker value is less than the preset threshold range, the processing circuit 100 determines adjustment data according to the common voltage value and the feedback voltage value and sends the adjustment data to the compensation chip 200, where the adjustment data includes the first resistance value of the first adjustable resistor R-, the second resistance value of the second adjustable resistor R+, the first capacitance value of the first adjustable capacitor C-, the second capacitance value of the second adjustable capacitor C+, and / or the third resistance value of the adjustable jumper resistor RF.

[0084] In order to determine the specific values of each resistor and capacitor in the compensation chip 200, during the implementation process, the display panel also needs to be connected to the processing circuit 100. In this way, the processing circuit 100 can obtain the flicker value from the display panel. When the flicker value is less than the preset threshold range, for example, the above preset threshold range is (-0.5, +0.5), that is, when the flicker situation of the display panel basically disappears, the processing circuit 100 combines the input common voltage value of the display panel and the feedback voltage value collected from the common electrode of the display panel to determine the adjustment data, and then sends the adjustment data to the compensation chip 200 for specific settings.

[0085] It should be noted that the above adjustment data includes the first resistance value of the first adjustable resistor R-, the second resistance value of the second adjustable resistor R+, the first capacitance value of the first adjustable capacitor C-, the second capacitance value of the second adjustable capacitor C+, and / or the third resistance value of the adjustable jumper resistor RF.

[0086] Here, the process of obtaining and setting the above adjustment data is further supplemented. Usually, it is the test stage before the products such as the compensation chip 200 and the display device leave the factory. Refer to Figure 6 As shown, during the test stage, the values of the first adjustable resistor R-, the second adjustable resistor R+, the first adjustable capacitor C-, the second adjustable capacitor C+, and the adjustable jumper resistor RF can be displayed in real time through the display interface on the test host. That is, the display interface displays the first resistance value of the first adjustable resistor R-, the second resistance value of the second adjustable resistor R+, the first capacitance value of the first adjustable capacitor C-, the second capacitance value of the second adjustable capacitor C+, and / or the third resistance value of the adjustable jumper resistor RF determined above, which is convenient for setting the values of the first adjustable resistor R-, the second adjustable resistor R+, the first adjustable capacitor C-, the second adjustable capacitor C+, and the adjustable jumper resistor RF and product recording, etc. After the values of the first adjustable resistor R-, the second adjustable resistor R+, the first adjustable capacitor C-, the second adjustable capacitor C+, and the adjustable jumper resistor RF are set, that is, after the products such as the compensation chip 200 and the display device leave the factory, they cannot be adjusted anymore.

[0087] The compensation chip 200 is configured to set the resistance value of the first adjustable resistor R- to the first resistance value, set the resistance value of the second adjustable resistor R+ to the second resistance value, set the capacitance value of the first adjustable capacitor C- to the first capacitance value, set the capacitance value of the second adjustable capacitor C+ to the second capacitance value, and / or set the resistance value of the adjustable jumper resistor RF to the third resistance value according to the received adjustment data.

[0088] During the implementation process, after the processing circuit 100 calculates the adjustment data, the compensation chip 200 can set the values of each resistor and capacitor according to the received adjustment data, that is, set the resistance value of the first adjustable resistor R- to the first resistance value, set the resistance value of the second adjustable resistor R+ to the second resistance value, set the capacitance value of the first adjustable capacitor C- to the first capacitance value, set the capacitance value of the second adjustable capacitor C+ to the second capacitance value, set the resistance value of the adjustable jumper resistor RF to the third resistance value, and so on.

[0089] Based on the same inventive concept, an embodiment of the present application provides a display device, including: a display panel and the above-mentioned compensation voltage system.

[0090] At least one acquisition point is provided on the display panel. The acquisition point is coupled to the common electrode. The display panel is coupled to the compensation chip 200. The compensation chip 200 is connected to at least one acquisition point. The acquisition point is configured to acquire at least one common voltage value of the display panel.

[0091] The display device in the embodiment of the present application includes a display panel and the above-mentioned compensation voltage system. In order to obtain the common voltage value, a plurality of acquisition points are provided on the display panel. Each acquisition point is coupled to the common electrode. During the implementation process, the common voltage value of the display panel is acquired through the acquisition point. Exemplarily, the common voltage value acquired by the acquisition point provided on the side close to the common electrode has little attenuation, and the common voltage value acquired by the acquisition point provided on the side far from the common electrode has greater attenuation. The common voltage value acquired by the acquisition point on the side far from the common electrode is used as the feedback voltage value of the display panel.

[0092] It should be noted that at least one compensation point is provided on the display panel. The compensation point is coupled to the common electrode of the display panel. The compensation point is configured to provide at least one compensation voltage value to the display panel.

[0093] In the embodiment of the present application, a plurality of compensation points coupled to the common electrode are also provided. The function of the compensation point is to provide the compensation voltage value determined by the compensation voltage system to the display panel. Preferably, the acquisition point and the compensation point are arranged adjacent to each other, and the compensation voltage value can be provided to the compensation point adjacent to the acquisition point corresponding to the feedback voltage value.

[0094] Exemplarily, the common electrode is distributed on one side of the display panel, and the acquisition point and the compensation point are provided on the side far from the common electrode.

[0095] In one embodiment, the common electrode is distributed on one side of the display panel. For example, at the bottom end of the display panel, the acquisition point and the compensation point are provided on the side far from the common electrode, that is, the acquisition point and the compensation point are provided at the top end of the display panel.

[0096] In another embodiment, refer to Figure 7As shown, the common electrode is distributed on one side of the display panel. For example, on the left side of the display panel, the acquisition point and the compensation point are set on the side far from the common electrode, that is, the acquisition point and the compensation point are set on the right side of the display panel.

[0097] In summary, an operational amplifier circuit, a compensation voltage system, and a display device provided in an embodiment of the present application. The operational amplifier circuit includes: an operational amplifier, a data transmission port, a first adjustment sub-circuit, a second adjustment sub-circuit, and an adjustable jumper resistor. The first adjustment sub-circuit is connected between the first input terminal and the negative input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the first input terminal and the negative input terminal in response to the signal of the data transmission port. The second adjustment sub-circuit is connected between the second input terminal and the positive input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the second input terminal and the positive input terminal in response to the signal of the data transmission port. The operational amplifier is configured to respond to the signals of the first input terminal and the second input terminal when the capacitance value and / or resistance value of the first adjustment sub-circuit is determined, the capacitance value and / or resistance value of the second adjustment sub-circuit is determined, and the resistance value of the adjustable jumper resistor is determined. Through the settings of the first adjustment sub-circuit, the second adjustment sub-circuit, and the adjustable jumper resistor, the flexible setting of the parameters of the operational amplifier circuit is realized, so that the common voltage at the far end of the display panel can be better compensated, and the flicker of the display panel is reduced.

[0098] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program product systems. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product system implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0099] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program product systems according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0100] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction device that implements the functions specified in one or more of the processes Figure 1 one or more of the processes and / or Figure 1 boxes specified in one or more of the boxes.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more of the processes Figure 1 one or more of the processes and / or Figure 1 boxes specified in one or more of the boxes.

[0102] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to cover these changes and modifications.

Claims

1. An operational amplifier circuit, characterized in that, it includes: an operational amplifier, a data transmission port, a first adjustment sub-circuit, a second adjustment sub-circuit, and an adjustable bridging resistor; The first adjustment sub-circuit is connected between the first input terminal and the negative input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the first input terminal and the negative input terminal in response to the signal of the data transmission port; The second adjustment sub-circuit is connected between the second input terminal and the positive input terminal of the operational amplifier, and is configured to adjust the capacitance value and / or resistance value between the second input terminal and the positive input terminal in response to the signal of the data transmission port; The operational amplifier is configured to respond to the signals of the first input terminal and the second input terminal after the capacitance value and / or resistance value of the first adjustment sub-circuit are determined, the capacitance value and / or resistance value of the second adjustment sub-circuit are determined, and the resistance value of the adjustable bridging resistor is determined.

2. The circuit according to claim 1, characterized in that, The first adjustment sub-circuit includes: a first adjustable capacitor and a first adjustable resistor; The first end of the first adjustable capacitor is coupled to the first input terminal, and the second end of the first adjustable capacitor is coupled to the first end of the first adjustable resistor, and is configured to adjust the first capacitance value in response to the first capacitance value adjustment signal loaded by the data transmission port; The second end of the first adjustable resistor is coupled to the negative input terminal of the operational amplifier, and is configured to adjust the first resistance value in response to the first resistance value adjustment signal loaded by the data transmission port.

3. The circuit according to claim 1, characterized in that, The second adjustment sub-circuit includes: a second adjustable capacitor and a second adjustable resistor; The first end of the second adjustable capacitor is coupled to the second input terminal, and the second end of the second adjustable capacitor is coupled to the first end of the second adjustable resistor, and is configured to adjust the second capacitance value in response to the second capacitance value adjustment signal loaded by the data transmission port; The second end of the second adjustable resistor is coupled to the positive input terminal of the operational amplifier, and is configured to adjust the second resistance value in response to the second resistance value adjustment signal loaded by the data transmission port.

4. The circuit according to claim 1, characterized in that, The first end of the adjustable bridging resistor is coupled to the second end of the first adjustable resistor, and the second end of the adjustable bridging resistor is coupled to the output terminal of the operational amplifier, and is configured to adjust the third resistance value in response to the third resistance value adjustment signal loaded by the data transmission port.

5. A compensation chip, characterized in that, it includes: at least one positive input terminal, at least one negative input terminal, at least one chip output terminal, and at least one operational amplifier circuit according to any one of claims 1 to 4, wherein the at least one positive input terminal, the at least one negative input terminal, the at least one chip output terminal, and the at least one operational amplifier circuit correspond one by one; The first input terminal of the operational amplifier circuit is connected to the corresponding positive input terminal, and the positive input terminal is configured to receive the common voltage value of the display panel; The second input terminal of the operational amplifier circuit is connected to the corresponding negative input terminal, and the negative input terminal is configured to receive the feedback voltage value of the display panel; The operational amplifier circuit is configured to output a compensation voltage value according to the common voltage value and the feedback voltage value.

6. The chip according to claim 5, wherein, further comprising: a data transmission bus; The data transmission ports of at least part of the operational amplifier circuits are coupled to the data transmission bus.

7. The chip according to claim 6, wherein, The communication protocol of the data transmission bus is the I2C protocol.

8. A compensation voltage system, wherein, comprising: a processing circuit and a compensation chip according to any one of claims 5 to 7; The processing circuit is coupled to the display panel and is configured to obtain the flicker value of the display panel, input the common voltage value of the display panel, and the feedback voltage value collected from the common electrode of the display panel, and when the flicker value is less than a preset threshold range, determine adjustment data according to the common voltage value and the feedback voltage value, and send the adjustment data to the compensation chip, wherein the adjustment data includes the first resistance value of the first adjustable resistor, the second resistance value of the second adjustable resistor, the first capacitance value of the first adjustable capacitor, the second capacitance value of the second adjustable capacitor, and / or the third resistance value of the adjustable jumper resistor; The compensation chip is configured to set the resistance value of the first adjustable resistor to the first resistance value, set the resistance value of the second adjustable resistor to the second resistance value, set the capacitance value of the first adjustable capacitor to the first capacitance value, set the capacitance value of the second adjustable capacitor to the second capacitance value, and / or set the resistance value of the adjustable jumper resistor to the third resistance value according to the received adjustment data.

9. A display device, wherein, comprising: a display panel and a compensation voltage system according to claim 8; At least one acquisition point is arranged on the display panel, the acquisition point is coupled to the common electrode, the display panel is coupled to the compensation chip, the compensation chip is connected to the at least one acquisition point, and the acquisition point is configured to acquire at least one common voltage value of the display panel.

10. The device according to claim 9, wherein, At least one compensation point is arranged on the display panel, the compensation point is coupled to the common electrode of the display panel, and the compensation point is configured to provide at least one compensation voltage value to the display panel.

11. The device according to claim 9, wherein, The common electrode is distributed on one side of the display panel, and the acquisition point and the compensation point are arranged on the side far from the common electrode.

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