Display device and electronic equipment

Abstract

The application discloses a display device and an electronic equipment. The display device comprises a gamma circuit, at least one data driving circuit, at least one real transmission line, an analog transmission line and a compensation circuit. The impedance of the real transmission line is proportionally equivalent to the analog transmission line by adding the analog transmission line. The compensation circuit can determine the voltage drop loss compensation value of the real transmission line, and compensate the potential of the initial gamma reference voltage signal with the voltage drop loss compensation value, so that the target gamma reference voltage signal received by the data driving circuit is the same as the initial gamma reference voltage signal output by the gamma circuit.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display device and electronic device. Background Technology

[0002] In a display device, the gamma circuit needs to provide a gamma reference voltage to the data driving circuit to generate the corresponding data signal. However, during the transmission of the gamma reference voltage from the gamma circuit to the data driving circuit, the voltage drop loss of the transmission line can easily lead to the gamma reference voltage received by the data driving circuit being too low, which in turn causes data signal distortion and affects display quality. Summary of the Invention

[0003] This application provides a display device and an electronic device to alleviate the technical problem of low gamma reference voltage received by the data drive circuit.

[0004] In a first aspect, this application provides a display device comprising a gamma circuit, at least one data driving circuit, at least one real transmission line, an analog transmission line, and a compensation circuit. The gamma circuit provides an initial gamma reference voltage signal; the at least one data driving circuit generates a corresponding data signal based on the target gamma reference voltage signal; one end of the real transmission line is connected to an input terminal of the data driving circuit; one end of the analog transmission line is connected to an output terminal of the gamma circuit, and the analog transmission line outputs a corresponding analog gamma reference voltage signal based on the received initial gamma reference voltage signal; one input terminal of the compensation circuit is connected to the output terminal of the gamma circuit to receive the initial gamma reference voltage signal, the other input terminal of the compensation circuit is connected to the other end of the analog transmission line to receive the analog gamma reference voltage signal, and one output terminal of the compensation circuit is connected to the other end of the real transmission line to output the target gamma reference voltage signal.

[0005] In some embodiments, the compensation circuit includes a subtraction proportional module, an inverting adder module, and an inverting module. One input of the subtraction proportional module is connected to one output of the gamma circuit to receive an initial gamma reference voltage signal, and the other input of the subtraction proportional module is connected to the other end of the analog transmission line to receive an analog gamma reference voltage signal, used to calculate the voltage drop loss compensation value. The inverting adder module is connected to the subtraction proportional module and is used to calculate the opposite of the potential of the target gamma reference voltage signal based on the voltage drop loss compensation value. The inverting module is connected to the inverting adder module and is used to take the opposite of the potential of the inverted target gamma reference voltage signal.

[0006] In some embodiments, the subtraction proportional module includes a first resistor, a second resistor, a first operational amplifier, a third resistor, and a fourth resistor. One end of the first resistor is connected to an output terminal of the gamma circuit to receive an initial gamma reference voltage signal. One end of the second resistor is connected to the other end of the first resistor, and the other end of the second resistor is grounded. The non-inverting input terminal of the first operational amplifier is connected to the other end of the first resistor and one end of the second resistor. One end of the third resistor is connected to the other end of the analog transmission line to receive an analog gamma reference voltage signal, and the other end of the third resistor is connected to the inverting input terminal of the first operational amplifier. The resistance value of the third resistor is equal to the resistance value of the first resistor. One end of the fourth resistor is connected to the other end of the third resistor and the inverting input terminal of the first operational amplifier, and the other end of the fourth resistor is connected to the output terminal of the first operational amplifier. The resistance value of the fourth resistor is equal to the resistance value of the second resistor.

[0007] In some embodiments, the resistance of the second resistor is half the resistance of the first resistor.

[0008] In some implementations, the preset ratio is the ratio of the resistance value of the second resistor to the resistance value of the first resistor.

[0009] In some embodiments, the inverting adder module includes a fifth resistor, a sixth resistor, a seventh resistor, and a second operational amplifier. One end of the fifth resistor is connected to the output of the first operational amplifier; one end of the sixth resistor is connected to the other end of the fifth resistor, and the other end of the sixth resistor is connected to one end of the first resistor; one end of the seventh resistor is connected to one end of the sixth resistor and the other end of the fifth resistor, and the resistance value of the seventh resistor is equal to the resistance values ​​of the fifth resistor and the sixth resistor, respectively; the inverting input of the second operational amplifier is connected to one end of the seventh resistor, one end of the sixth resistor, and the other end of the fifth resistor; the non-inverting input of the second operational amplifier is grounded; and the output of the second operational amplifier is connected to the other end of the seventh resistor.

[0010] In some embodiments, the inverting module includes an eighth resistor, a ninth resistor, and a third operational amplifier. One end of the eighth resistor is connected to the output of the second operational amplifier; one end of the ninth resistor is connected to the other end of the eighth resistor, and the resistance of the ninth resistor is equal to that of the eighth resistor; the inverting input of the third operational amplifier is connected to the other end of the eighth resistor and one end of the ninth resistor; the output of the third operational amplifier is connected to the other end of the ninth resistor; and the non-inverting input of the third operational amplifier is grounded.

[0011] In some embodiments, at least one data driving circuit includes a first data driving circuit and a second data driving circuit; at least one real transmission line includes a first real transmission line and a second real transmission line, the first real transmission line is connected to the first data driving circuit, the second real transmission line is connected to the second data driving circuit, the first real transmission line is used to transmit a first real gamma reference voltage signal, the second real transmission line is used to transmit a second real gamma reference voltage signal, the impedance of the first real transmission line is equal to the impedance of the second real transmission line, and the potential of the first real gamma reference voltage signal is equal to the potential of the second real gamma reference voltage signal.

[0012] In some embodiments, one output terminal of the compensation circuit is connected to the first real transmission line and the second real transmission line; or, the first output terminal of the compensation circuit is connected to the first real transmission line, and the second output terminal of the compensation circuit is connected to the second real transmission line.

[0013] Secondly, this application provides an electronic device including the display device in at least one of the above embodiments, wherein the compensation circuit is a compensation chip, the compensation chip includes at least one set of pins, each set of pins including a first pin, a second pin and a third pin, the first pin is used to receive an initial gamma reference voltage signal, the second pin is used to receive an analog gamma reference voltage signal, and the third pin is used to output a target gamma reference voltage signal.

[0014] In some implementations, a preset ratio of the voltage difference between the initial gamma reference voltage signal and the simulated gamma reference voltage signal is used as the voltage drop loss compensation value of the actual transmission line, and the sum of the voltage drop loss compensation value and the potential of the initial gamma reference voltage signal is determined as the potential of the target gamma reference voltage signal.

[0015] The display device and electronic device provided in this application, by adding an analog transmission line to proportionally equalize the impedance of the real transmission line, the compensation circuit can determine the voltage drop loss compensation value of the real transmission line, and use the voltage drop loss compensation value to compensate the potential of the initial gamma reference voltage signal, so that the target gamma reference voltage signal received by the data driving circuit is the same as the initial gamma reference voltage signal output by the gamma circuit.

[0016] Furthermore, since the compensation circuit does not use the measured impedance of the actual transmission line, but instead uses a simulated transmission line to represent the impedance of the actual transmission line, the resistance changes caused by aging and other factors are the same for both the actual and simulated transmission lines, thus improving the accuracy of the compensation.

[0017] Furthermore, since the transmission path length from the gamma circuit to each data driving circuit is different, the voltage drop loss of the initial gamma reference voltage signal transmitted to each data driving circuit will also be different. This will result in different potentials of the data signals output by different data driving circuits at the same gray level, which will cause color distortion in the display. However, in this application, corresponding voltage drop loss compensation can be made for each actual transmission line so that the potentials of the data signals output by different data driving circuits at the same gray level are the same, thereby alleviating or eliminating the color distortion phenomenon. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the display device provided in the embodiments of this application.

[0020] Figure 2 for Figure 1 The diagram shows the structure of the compensation circuit.

[0021] Figure 3 for Figure 2 The diagram shows the package structure of the compensation circuit. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] This embodiment provides a display device; please refer to [link / reference]. Figures 1 to 3 ,like Figure 1As shown, the display device includes a gamma circuit 10, at least one data driving circuit 200, at least one real transmission line 600, an analog transmission line 500, and a compensation circuit 20. The gamma circuit 10 is used to provide an initial gamma reference voltage signal V1; at least one data driving circuit 200 is used to generate a corresponding data signal based on the target gamma reference voltage signal V0; one end of the real transmission line 600 is connected to an input terminal of the data driving circuit 200; one end of the analog transmission line 500 is connected to an output terminal of the gamma circuit 10, and the analog transmission line 500 is used to output a corresponding analog gamma reference voltage signal V1' based on the received initial gamma reference voltage signal V1; one input terminal of the compensation circuit 20 is connected to the output terminal of the gamma circuit 10 to receive the initial gamma reference voltage signal V1, the other input terminal of the compensation circuit 20 is connected to the other end of the analog transmission line 500 to receive the analog gamma reference voltage signal V1', and one output terminal of the compensation circuit 20 is connected to the other end of the real transmission line 600 to output the target gamma reference voltage signal V0.

[0024] It is understood that the display device provided in this embodiment, by adding an analog transmission line 500 to proportionally equalize the impedance of the real transmission line 600, the compensation circuit 20 can determine the voltage drop loss compensation value of the real transmission line 600, and use the voltage drop loss compensation value to compensate the potential of the initial gamma reference voltage signal V1, so that the target gamma reference voltage signal V0 received by the data driving circuit 200 is the same as the initial gamma reference voltage signal V1 output by the gamma circuit 10.

[0025] Furthermore, since the compensation circuit 20 does not use the measured impedance of the actual transmission line 600, but instead uses the analog transmission line 500 to represent the impedance of the actual transmission line 600, the resistance changes caused by aging and other factors in both the actual transmission line 600 and the analog transmission line 500 are the same, thus improving the compensation accuracy.

[0026] Furthermore, since the transmission path lengths from the gamma circuit 10 to each data driving circuit 200 are different, the voltage drop loss of the initial gamma reference voltage signal V1 transmitted to each data driving circuit 200 will also be different. This will result in different potentials of the data signals output by different data driving circuits 200 at the same grayscale, which will cause color distortion in the display. In this application, corresponding voltage drop loss compensation can be made for each real transmission line 600 so that the potentials of the data signals output by different data driving circuits 200 at the same grayscale are the same, thereby alleviating or eliminating the color distortion phenomenon.

[0027] It should be noted that the compensation circuit 20 is used to determine the preset ratio of the voltage difference between the initial gamma reference voltage signal V1 and the analog gamma reference voltage signal V1' as the voltage drop loss compensation value of the real transmission line 600, and to determine the sum of the voltage drop loss compensation value and the potential of the initial gamma reference voltage signal V1 as the potential of the target gamma reference voltage signal V0.

[0028] It should be noted that each of the at least one data driving circuit 200 can be a data driving chip, which can be disposed on the display panel through a flip-chip film to achieve corresponding connection with the data lines in the display panel. The at least one data driving circuit 200 can be arranged sequentially along the horizontal direction.

[0029] The display device may also include a CB circuit board 100, an XB circuit board 400, and a flexible circuit board. The CB circuit board 100 can be connected to the XB circuit board 400 via a flexible circuit board, and different XB circuit boards 400 can also be connected via flexible circuit boards. The gamma circuit 10 and the compensation circuit 20 can both be disposed on the CB circuit board 100. The real transmission line 600 and the analog transmission line 500 can be disposed on at least one of the CB circuit board 100, the XB circuit board 400, and the flexible circuit board. For example, the routing path of the analog transmission line 500 can be determined by setting a positioning point 300 at a distance equivalent to that of the data driving circuit 200. The distance from the positioning point 300 to the compensation circuit 20 can be equivalent to the distance from the corresponding data driving circuit 200 to the compensation circuit 20. This ensures that the equivalent resistance of the analog transmission line 500 is twice that of the real transmission line 600. Alternatively, the routing path of the analog transmission line 500 can be adjusted to change the ratio of their equivalent resistances.

[0030] In one embodiment, such as Figure 2 As shown, the compensation circuit 20 includes a subtraction proportional module 21, an inverting adder module 22, and an inverting module 23. One input terminal of the subtraction proportional module 21 is connected to one output terminal of the gamma circuit 10 to receive the initial gamma reference voltage signal V1, and the other input terminal of the subtraction proportional module 21 is connected to the other end of the analog transmission line 500 to receive the analog gamma reference voltage signal V1', which is used to calculate the voltage drop loss compensation value. The inverting adder module 22 is connected to the subtraction proportional module 21 and is used to calculate the opposite of the potential of the target gamma reference voltage signal V0 based on the voltage drop loss compensation value. The inverting module 23 is connected to the inverting adder module 22 and is used to take the opposite of the potential of the inverted gamma reference voltage signal V0.

[0031] It should be noted that in this embodiment, the subtraction proportional module 21, the inverse addition module 22, and the inverse module 23 are constructed to realize the specific function of the compensation circuit 20, so that the target gamma reference voltage signal V0 received by the data driving circuit 200 is the same as the initial gamma reference voltage signal V1 output by the gamma circuit 10.

[0032] In one embodiment, the subtraction proportional module 21 includes a first resistor R01, a second resistor R11, a first operational amplifier A1, a third resistor R02, and a fourth resistor R12. One end of the first resistor R01 is connected to an output terminal of the gamma circuit 10 to receive an initial gamma reference voltage signal V1; one end of the second resistor R11 is connected to the other end of the first resistor R01, and the other end of the second resistor R11 is grounded; the non-inverting input terminal of the first operational amplifier A1 is connected to the other end of the first resistor R01 and one end of the second resistor R11; the third... One end of resistor R02 is connected to the other end of analog transmission line 500 to receive analog gamma reference voltage signal V1'. The other end of the third resistor R02 is connected to the inverting input terminal of the first operational amplifier A1. The resistance value of the third resistor R02 is equal to the resistance value of the first resistor R01. One end of the fourth resistor R12 is connected to the other end of the third resistor R02 and the inverting input terminal of the first operational amplifier A1. The other end of the fourth resistor R12 is connected to the output terminal of the first operational amplifier A1. The resistance value of the fourth resistor R12 is equal to the resistance value of the second resistor R11.

[0033] It should be noted that in this embodiment, the first resistor R01, the second resistor R11, the first operational amplifier A1, the third resistor R02, and the fourth resistor R12 are constructed to realize the specific function of the subtraction proportional module 21, which can calculate the voltage drop loss compensation value.

[0034] Based on the virtual short and virtual open characteristics of an ideal operational amplifier, the output voltage of operational amplifier A1 can be obtained as follows:

[0035] V2 = (V1 - V1') * R11 / R01, where R01 is the resistance of the first resistor R01 and R11 is the resistance of the second resistor R11. Here, we can take R11 / R01 = 1 / 2 as an example for further explanation.

[0036] In one embodiment, the resistance value of the second resistor R11 is half the resistance value of the first resistor R01.

[0037] It should be noted that the resistance value of the second resistor R11 can be the equivalent resistance of the real transmission line 600, and the resistance value of the first resistor R01 can be the equivalent resistance of the simulated transmission line 500. Setting such a ratio is beneficial for setting the routing path of the simulated transmission line 500.

[0038] In one embodiment, the preset ratio is the ratio of the resistance value of the second resistor R11 to the resistance value of the first resistor R01.

[0039] It should be noted that, in this embodiment, since the equivalent resistance of the simulated transmission line 500 is twice that of the real transmission line 600, the voltage drop loss of the simulated transmission line 500 is also twice that of the real transmission line 600.

[0040] In one embodiment, the inverting adder module 22 includes a fifth resistor R21, a sixth resistor R22, a seventh resistor R23, and a second operational amplifier A2. One end of the fifth resistor R21 is connected to the output terminal of the first operational amplifier A1; one end of the sixth resistor R22 is connected to the other end of the fifth resistor R21, and the other end of the sixth resistor R22 is connected to one end of the first resistor R01; one end of the seventh resistor R23 is connected to one end of the sixth resistor R22 and the other end of the fifth resistor R21, and the resistance value of the seventh resistor R23 is equal to the resistance values ​​of the fifth resistor R21 and the sixth resistor R22, respectively; the inverting input terminal of the second operational amplifier A2 is connected to one end of the seventh resistor R23, one end of the sixth resistor R22, and the other end of the fifth resistor R21; the non-inverting input terminal of the second operational amplifier A2 is grounded; and the output terminal of the second operational amplifier A2 is connected to the other end of the seventh resistor R23.

[0041] It should be noted that in this embodiment, the fifth resistor R21, the sixth resistor R22, the seventh resistor R23 and the second operational amplifier A2 are constructed to realize the specific function of the inverting adder module 22, which can calculate the opposite of the potential of the target gamma reference voltage signal V0 based on the voltage drop loss compensation value.

[0042] Based on the virtual short and virtual open characteristics of an ideal op-amp, the output voltage of op-amp A2 can be obtained as follows:

[0043] V3=-(V1+V2)=-

(V1-V1') / 2+V1

[0044] In one embodiment, the inverting module 23 includes an eighth resistor R31, a ninth resistor R32, and a third operational amplifier A3. One end of the eighth resistor R31 is connected to the output of the second operational amplifier A2; one end of the ninth resistor R32 is connected to the other end of the eighth resistor R31, and the resistance of the ninth resistor R32 is equal to the resistance of the eighth resistor R31; the inverting input of the third operational amplifier A3 is connected to the other end of the eighth resistor R31 and one end of the ninth resistor R32, the output of the third operational amplifier A3 is connected to the other end of the ninth resistor R32, and the non-inverting input of the third operational amplifier A3 is grounded.

[0045] It should be noted that in this embodiment, the eighth resistor R31, the ninth resistor R32, and the third operational amplifier A3 are constructed to realize the specific function of the inverting module 23, which can take the opposite value of the potential of the inverted gamma reference voltage signal V0.

[0046] Based on the virtual short and virtual open characteristics of an ideal op-amp, the output voltage of op-amp A3 can be obtained as follows:

[0047] V0=-V3=(V1+V2)=(V1-V1') / 2+V1

[0048] In one embodiment, such as Figure 1 As shown, at least one data driving circuit 200 includes a first data driving circuit and a second data driving circuit; at least one real transmission line 600 includes a first real transmission line and a second real transmission line, the first real transmission line is connected to the first data driving circuit, the second real transmission line is connected to the second data driving circuit, the first real transmission line is used to transmit a first real gamma reference voltage signal, the second real transmission line is used to transmit a second real gamma reference voltage signal, the impedance of the first real transmission line is equal to the impedance of the second real transmission line, and the potential of the first real gamma reference voltage signal is equal to the potential of the second real gamma reference voltage signal.

[0049] It should be noted that the first data drive circuit can be Figure 1 The first data drive circuit from left to right in the middle, the second data drive circuit can be Figure 1 The last data driving circuit 200 from left to right has the same or approximately equal routing distance from the first real transmission line and the second real transmission line to the compensation circuit 20. In this case, the first real transmission line and the second real transmission line can share the same gamma reference voltage signal V0, i.e., the first real gamma reference voltage signal or the second real gamma reference voltage signal, which can save the number of compensation circuits 20 used.

[0050] In one embodiment, one output terminal of the compensation circuit 20 is connected to the first real transmission line and the second real transmission line; or, the first output terminal of the compensation circuit 20 is connected to the first real transmission line, and the second output terminal of the compensation circuit 20 is connected to the second real transmission line.

[0051] It should be noted that in this embodiment, one output terminal of the compensation circuit 20 is connected to the first real transmission line and the second real transmission line. The first real transmission line and the second real transmission line can share the same output terminal of the compensation circuit 20, which can reduce the number of output terminals used by the compensation circuit 20.

[0052] In one embodiment, such as Figure 3As shown, the compensation circuit 20 is a compensation chip. The compensation chip includes at least one set of pins. Each set of pins includes a first pin 1, a second pin 2, and a third pin 3. The first pin 1 is used to receive the initial gamma reference voltage signal V1, the second pin 2 is used to receive the analog gamma reference voltage signal V1', and the third pin 3 is used to output the target gamma reference voltage signal V0.

[0053] It should be noted that pin 1, pin 2, and pin 3 can be used as the first group of pins; pin 4, pin 5, and pin 6 can be used as the second group of pins; pin 7, pin 8, and pin 9 can be used as the third group of pins; and pin 10, pin 11, and pin 12 can be used as the fourth group of pins.

[0054] Each set of pins can provide a target gamma reference voltage signal V0 for the same data driving circuit 200. That is, each data driving circuit 200 needs to receive four target gamma reference voltage signals V0 and generate 10 or 14 internal gamma voltages based on the four target gamma reference voltage signals V0. The 10 or 14 internal gamma voltages, together with the four target gamma reference voltage signals V0, can generate 255 grayscale voltages, thereby enabling the modulation of various data signals as required.

[0055] In one embodiment, this embodiment provides an electronic device that includes the display device described in at least one of the above embodiments.

[0056] It is understood that the electronic device provided in this embodiment, by adding an analog transmission line 500 to proportionally equalize the impedance of the real transmission line 600, the compensation circuit 20 can determine the voltage drop loss compensation value of the real transmission line 600, and use the voltage drop loss compensation value to compensate the potential of the initial gamma reference voltage signal V1, so that the target gamma reference voltage signal V0 received by the data driving circuit 200 is the same as the initial gamma reference voltage signal V1 output by the gamma circuit 10.

[0057] Furthermore, since the compensation circuit 20 does not use the measured impedance of the actual transmission line 600, but instead uses the analog transmission line 500 to represent the impedance of the actual transmission line 600, the resistance changes caused by aging and other factors in both the actual transmission line 600 and the analog transmission line 500 are the same, thus improving the compensation accuracy.

[0058] Furthermore, since the transmission path lengths from the gamma circuit 10 to each data driving circuit 200 are different, the voltage drop loss of the initial gamma reference voltage signal V1 transmitted to each data driving circuit 200 will also be different. This will result in different potentials of the data signals output by different data driving circuits 200 at the same grayscale, which will cause color distortion in the display. In this application, corresponding voltage drop loss compensation can be made for each real transmission line 600 so that the potentials of the data signals output by different data driving circuits 200 at the same grayscale are the same, thereby alleviating or eliminating the color distortion phenomenon.

[0059] It should be noted that the above-mentioned display device can be a liquid crystal display device or a self-emissive display device, such as an organic light-emitting diode display device, a quantum dot light-emitting diode display device, a mini light-emitting diode display device, or a micro light-emitting diode display device.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] The display device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display device, characterized by comprising: The application relates to a gamma circuit, at least one data driving circuit, at least one real transmission line, an analog transmission line and a compensation circuit. The gamma circuit is used for providing an initial gamma reference voltage signal. The at least one data driving circuit is used for generating a corresponding data signal according to a target gamma reference voltage signal. One end of the real transmission line is connected with an input end of the data driving circuit. One end of the analog transmission line is connected with an output end of the gamma circuit, and the analog transmission line is used for outputting a corresponding analog gamma reference voltage signal according to the received initial gamma reference voltage signal. The compensation circuit has one input end connected with the output end of the gamma circuit to receive the initial gamma reference voltage signal, another input end connected with the other end of the analog transmission line to receive the analog gamma reference voltage signal, and one output end connected with the other end of the real transmission line to output the target gamma reference voltage signal. The subtraction proportional module has one input end connected with the output end of the gamma circuit to receive the initial gamma reference voltage signal, another input end connected with the other end of the analog transmission line to receive the analog gamma reference voltage signal, and is used for calculating a voltage drop loss compensation value. The reverse addition module is connected with the subtraction proportional module, and is used for calculating the opposite of the potential of the target gamma reference voltage signal according to the voltage drop loss compensation value. The reverse module is connected with the reverse addition module, and is used for taking the opposite of the potential of the target gamma reference voltage signal. The subtraction proportional module comprises a first resistor, a second resistor, a first operational amplifier, a third resistor and a fourth resistor. One end of the first resistor is connected with the output end of the gamma circuit to receive the initial gamma reference voltage signal. One end of the second resistor is connected with the other end of the first resistor, and the other end of the second resistor is grounded. The non-inverting input end of the first operational amplifier is connected with the other end of the first resistor and one end of the second resistor. One end of the third resistor is connected with the other end of the analog transmission line to receive the analog gamma reference voltage signal, and the other end of the third resistor is connected with the inverting input end of the first operational amplifier. The resistance value of the third resistor is equal to that of the first resistor. One end of the fourth resistor is connected with the other end of the third resistor and the inverting input end of the first operational amplifier, and the other end of the fourth resistor is connected with the output end of the first operational amplifier. The resistance value of the fourth resistor is equal to that of the second resistor. The ratio of the resistance value of the second resistor to that of the first resistor is one half. The reverse addition module comprises a fifth resistor and a sixth resistor. One end of the fifth resistor is connected with the output end of the first operational amplifier. One end of the sixth resistor is connected with the other end of the fifth resistor, and the other end of the sixth resistor is connected with one end of the first resistor. a seventh resistor, one end of the seventh resistor is connected with one end of the sixth resistor and the other end of the fifth resistor, and the resistance of the seventh resistor is equal to the resistance of the fifth resistor and the resistance of the sixth resistor respectively; a second operational amplifier, the inverting input terminal of the second operational amplifier is connected with one end of the seventh resistor, one end of the sixth resistor and the other end of the fifth resistor, the non-inverting input terminal of the second operational amplifier is grounded, and the output terminal of the second operational amplifier is connected with the other end of the seventh resistor.

2. The display device according to claim 1, wherein The preset proportion of the voltage difference between the initial gamma reference voltage signal and the analog gamma reference voltage signal is a voltage drop loss compensation value of the real transmission line, and the preset proportion is the ratio of the resistance of the second resistor to the resistance of the first resistor.

3. The display device according to claim 1, wherein The reverse module comprises: an eighth resistor, one end of the eighth resistor is connected with the output terminal of the second operational amplifier; a ninth resistor, one end of the ninth resistor is connected with the other end of the eighth resistor, and the resistance of the ninth resistor is equal to the resistance of the eighth resistor; and a third operational amplifier, the inverting input terminal of the third operational amplifier is connected with the other end of the eighth resistor and one end of the ninth resistor, the output terminal of the third operational amplifier is connected with the other end of the ninth resistor, and the non-inverting input terminal of the third operational amplifier is grounded.

4. The display device according to any one of claims 1 to 3, characterized by The at least one data driving circuit comprises a first data driving circuit and a second data driving circuit; The at least one real transmission line comprises a first real transmission line and a second real transmission line, the first real transmission line is connected with the first data driving circuit, the second real transmission line is connected with the second data driving circuit, the first real transmission line is used for transmitting a first real gamma reference voltage signal, the second real transmission line is used for transmitting a second real gamma reference voltage signal, the impedance of the first real transmission line is equal to the impedance of the second real transmission line, and the potential of the first real gamma reference voltage signal is equal to the potential of the second real gamma reference voltage signal.

5. The display device according to claim 4, wherein An output terminal of the compensation circuit is connected with the first real transmission line and the second real transmission line; or, The first output terminal of the compensation circuit is connected with the first real transmission line, and the second output terminal of the compensation circuit is connected with the second real transmission line.

6. An electronic device, comprising: The display device comprises the display device according to any one of claims 1 to 5, wherein the compensation circuit is a compensation chip, the compensation chip comprises at least one group of pins, each group of pins comprises a first pin, a second pin and a third pin, the first pin is used for receiving the initial gamma reference voltage signal, the second pin is used for receiving the analog gamma reference voltage signal, and the third pin is used for outputting the target gamma reference voltage signal.

7. The electronic device of claim 6, wherein, The preset proportion of the voltage difference between the initial gamma reference voltage signal and the analog gamma reference voltage signal is a voltage drop loss compensation value of the real transmission line, and the sum of the voltage drop loss compensation value and the potential of the initial gamma reference voltage signal is the potential of the target gamma reference voltage signal.

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