CN210136714U - Common voltage driving circuit and display device - Google Patents
Common voltage driving circuit and display device Download PDFInfo
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- CN210136714U CN210136714U CN201921079421.2U CN201921079421U CN210136714U CN 210136714 U CN210136714 U CN 210136714U CN 201921079421 U CN201921079421 U CN 201921079421U CN 210136714 U CN210136714 U CN 210136714U
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Abstract
A common voltage driving voltage and a display device are disclosed. The drive circuit includes: the temperature detection module is used for providing a control signal according to the ambient temperature; the voltage compensation module is used for providing compensation voltage according to the control signal; and the voltage generation module is used for generating a first voltage and providing a common voltage according to the first voltage and the compensation voltage, wherein when the ambient temperature is lower than the preset temperature, the voltage value of the compensation voltage is 0V, and when the ambient temperature is higher than the preset temperature, the voltage value of the compensation voltage is greater than 0V. The driving circuit provides a common voltage according to the first voltage at normal temperature, provides a compensation voltage at high temperature, and provides the common voltage according to the first voltage and the compensation voltage, so that the optimal common voltage can be output to the display panel at normal temperature and high temperature, and the problems of flicker and drift of a display picture at high temperature are solved.
Description
Technical Field
The utility model relates to a show technical field, more specifically relates to a public voltage drive circuit and display device.
Background
With the increasing maturity of Thin Film Transistor-Liquid crystal display (TFT-LCD) industry, the requirements of users on the quality and quality of display panels are higher and higher, the application scenarios of display panels are wider and wider, and the display panels may need to work alternately in the environment of normal temperature, high temperature or low temperature.
The common voltage Vcom is crucial to the stability of the display screen, and in the prior art, before the display panel leaves a factory, a common voltage with a minimum flicker value (flicker), that is, an optimal common voltage, is found through a test, the optimal common voltage is set as a common voltage for driving the display panel, and the common voltage is written into a driving code. Therefore, after the factory shipment, the common voltage of the display panel is fixed in the driving code. However, due to the temperature characteristics, the liquid crystal molecules are different between the normal temperature and the high temperature, so that the flicker value of the optimal common voltage at the normal temperature becomes large at the high temperature; the optimal common voltage at high temperature has a large flicker value at normal temperature, that is, the common voltage in the prior art cannot give consideration to both normal temperature and high temperature application environments, thereby reducing the quality of the display picture.
The display panel in the prior art has the problems that at normal temperature, the common voltage provided by the common driving circuit meets the optimal common voltage at the normal temperature, and the display panel displays normally; at high temperature, the common voltage provided by the common driving circuit does not satisfy the optimum common voltage at high temperature due to the deviation of the optimum common voltage, so that the flicker value of the panel becomes large and the flicker picture is severely flickered.
Therefore, further improvement of the common driving circuit in the prior art is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a common voltage driving circuit and a display device, which provide a compensation voltage and provide a common voltage according to a first voltage and the compensation voltage, so as to output an optimal common voltage to a display panel at both normal temperature and high temperature.
According to an aspect of the present invention, there is provided a common voltage driving circuit for driving a display panel, the driving circuit including: the temperature detection module is used for providing a control signal according to the ambient temperature; the voltage compensation module is connected to the temperature detection module and used for providing compensation voltage according to the control signal; and the voltage generating module is connected to the voltage compensating module and used for generating a first voltage and providing a common voltage according to the first voltage and the compensating voltage, wherein when the environment temperature is lower than a preset temperature, the voltage value of the compensating voltage is 0V, and when the environment temperature is higher than the preset temperature, the voltage value of the compensating voltage is greater than 0V.
Preferably, the temperature detection module includes: the detection circuit is used for providing a detection signal according to the environment temperature; a reference circuit for providing a reference signal; and the comparator is used for providing the control signal according to the detection signal and the reference signal, wherein the control signal represents whether the ambient temperature is higher than the preset temperature, when the ambient temperature is lower than the preset temperature, the comparator outputs the control signal of high level voltage, and when the ambient temperature is higher than the preset temperature, the comparator outputs the control signal of low level voltage.
Preferably, the detection circuit comprises: a first resistance circuit; and the second resistance circuit is connected with the first resistance circuit in series between a first power supply and a reference ground, and one end of the second resistance circuit, which is connected with the first resistance circuit, provides the detection signal, wherein the second resistance circuit at least comprises a thermistor, and the conduction resistance value of the thermistor changes along with the ambient temperature, so that the detection signal represents the ambient temperature.
Preferably, the temperature detection module further includes: a first capacitor connected to a first input terminal of the comparator; and a second capacitor connected to a second input terminal of the comparator.
Preferably, the voltage compensation module includes: the power supply circuit is used for providing a second voltage according to the control signal; and a voltage regulating circuit for providing the compensation voltage according to the second voltage.
Preferably, the power supply circuit includes: a first resistor, a first end of which is connected to a second power supply, and a second end of which provides the second voltage; and a first path end of the switching tube is connected to the second end of the first resistor, a second path end of the switching tube is connected to a reference ground, and a control end of the switching tube receives the control signal, wherein when the control signal is a high level voltage, a voltage value of the second voltage is 0V, and when the control signal is a level voltage, the voltage value of the second voltage is greater than 0V and not greater than a voltage value of the second power supply.
Preferably, the voltage regulating circuit includes: the inverting input end of the operational amplifier receives the second voltage through a second resistor, the positive input end of the operational amplifier is connected to the reference ground through a third resistor, and the output end of the operational amplifier provides the compensation voltage; and the fourth resistor is connected between the output end and the inverting input end of the operational amplifier, wherein the third resistor is an adjustable resistor and is used for adjusting the gain of the operational amplifier so as to adjust the voltage value of the compensation voltage.
Preferably, the voltage generation module includes: a third power supply for supplying the first voltage; a fifth resistor, a first end of which is connected to the voltage compensation module, for receiving the compensation voltage; and a sixth resistor having a first terminal connected to the third power source and a second terminal connected to the second terminal of the fifth resistor to supply the common voltage.
According to another aspect of the present invention, there is provided a display device, including: a display panel for generating a display screen; and the common voltage driving circuit is connected to the display panel and provides a common voltage to the display panel.
The utility model provides a common voltage drive circuit and display device, compensating voltage is 0V when the normal atmospheric temperature, provides common voltage according to first voltage, provides the compensating voltage who is greater than 0V when the high temperature, provides common voltage according to first voltage and compensating voltage to the homoenergetic exports best common voltage for display panel when normal atmospheric temperature and high temperature, has solved the problem that the display screen scintillation and drift appear under the high temperature.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 shows an equivalent circuit diagram of a display device;
fig. 2 shows a circuit schematic of a common voltage drive circuit according to an embodiment of the present invention;
fig. 3 shows a schematic diagram of a display device according to an embodiment of the invention.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples.
Fig. 1 shows an equivalent circuit diagram of a display device.
Fig. 1 shows a display device 100 according to an embodiment of the present invention, taking a liquid crystal display device as an example. As shown in fig. 1, the display device 100 includes a gate driver 110, a source driver 120, a common voltage driving circuit 130, a plurality of thin film transistors T, and a plurality of pixel capacitors C formed between pixel electrodes and a common electrodeLC. The plurality of Thin Film Transistors (TFTs) form a transistor array, and the plurality of pixel capacitors (C)LCForming a pixel array.
The gate driver 110 is connected to the gates of the thin film transistors T of the corresponding row via a plurality of scan lines G1 to Gm, respectively, for supplying gate voltages G1 to Gm in a scanning manner, thereby gating the thin film transistors of different rows during one image frame period.
The source driver 120 is connected to the sources of the tfts T in the corresponding row through the data lines S1 through Sn, and when the tfts T in each row are turned on, the source driver 120 provides the tfts T in each row with gray scale voltages corresponding to gray scales. Wherein m and n are natural numbers. The drains of the thin film transistors T are respectively connected to a corresponding pixel capacitor CLC. In the gate state, the source driver 120 applies a gray scale voltage to the pixel capacitor C via the data line and the thin film transistor TLCThe above. Pixel capacitance CLCThe applied voltage acts on the liquid crystal molecules to change the orientation of the liquid crystal molecules to achieve a light transmittance corresponding to a gray scale. To maintain the voltage between update periods of the pixel, the pixel capacitance CLCThe storage capacitor Cs may be connected in parallel to obtain a longer holding time.
The common voltage driving circuit 130 is connected to one end of the pixel array and supplies a common voltage, and a voltage difference between the gray scale voltage supplied from the source driver 120 and the common voltage supplied from the common voltage driving circuit 130 is an actual voltage of the liquid crystal molecules, and an image can be generated by changing a voltage difference (generally referred to as a data signal) supplied to each pixel.
In this embodiment, the internal structure and the connection relationship of the display device are described by taking the liquid crystal display device as an example, but the display device of the present invention is not limited to the liquid crystal display device. The display device may be applied to various fields, and the display device may include one or a combination of electronic devices such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, a television, and a vehicle-mounted display panel.
Fig. 2 shows a circuit schematic diagram of a common voltage driving circuit according to an embodiment of the present invention.
As shown in fig. 2, the common voltage driving circuit 130 includes a temperature detection module 131, a voltage compensation module 132, and a voltage generation module 133 for supplying the common voltage Vcom. The temperature detecting module 131 is used for providing a control signal according to the ambient temperature, and the temperature detecting module 131 is connected to the voltage compensating module 132 via a resistor R5. The voltage compensation module 132 provides a compensation voltage according to the control signal, the voltage generation module 133 is configured to provide a first voltage, an output terminal of the voltage compensation module 132 is connected to an output terminal of the voltage generation module 133 to provide a common voltage, and a magnitude of the common voltage is determined according to the first voltage and the compensation voltage.
The temperature detection module 131 includes a detection circuit, a reference circuit, and a comparator U1. The sensing circuit provides a sensing signal based on ambient temperature, the reference circuit provides a reference signal, and the comparator U1 provides a control signal based on the sensing signal and the reference signal. When the ambient temperature is higher than the preset temperature, the comparator U1 provides one of a control signal of a low level voltage and a control signal of a high level voltage; when the ambient temperature is lower than the preset temperature, the comparator U1 provides the other of the control signal of the low level voltage and the control signal of the high level voltage.
The sensing circuit includes a resistor R1 and a resistor R2 for sensing ambient temperature and providing a sensing signal. The resistor R1 has a first terminal connected to the positive terminal of the power source V1 (first power source), a second terminal connected to the first terminal of the resistor R2 for providing the detection signal, and a second terminal connected to the ground reference R2. In this embodiment, the resistor R2 is a thermistor, and the detection voltage outputs a preset voltage value at a preset temperature. The resistor R2 is, for example, a Negative Temperature Coefficient (NTC) thermistor, and when the ambient temperature rises, the resistance value of the resistor R2 becomes small, and the voltage of the detection signal becomes small.
In an alternative embodiment, the detection circuit may include a first resistor circuit including the resistor R1 and other resistors and a second resistor circuit including the resistor R2 and other resistors, the resistor R2 being a thermistor. The utility model discloses be not limited to the quantity of resistance among the detection circuitry, as long as including thermistor and at least one resistance that is used for the partial pressure in the detection circuitry to it can along with ambient temperature change to realize the detected signal.
The reference circuit includes a resistor R3 and a resistor R4 for providing a reference signal. The first terminal of the resistor R3 is connected to the positive electrode of the power supply V2, the second terminal is connected to the first terminal of the resistor R4 and provides a reference signal, and the second terminal of the resistor R4 is connected to the reference ground. The magnitude of the reference voltage can be determined according to the voltage division condition of the resistor R3 and the resistor R4, and the magnitudes of the resistor R3 and the resistor R4 are adjusted according to the magnitude of the preset temperature, so as to adjust the reference voltage to a voltage value corresponding to the preset voltage value.
The comparator U1 has a non-inverting input terminal for receiving the detection signal, an inverting input terminal for receiving the reference signal, a positive supply terminal connected to the positive terminal of the power supply V3, and a negative supply terminal connected to the positive terminal of the power supply V4 for providing a control signal according to the detection signal and the reference signal. When the environment temperature is higher than the preset temperature, the voltage value of the detection signal is smaller than the preset voltage value, namely smaller than the voltage value of the reference signal, so that the comparator U1 outputs a control signal of low-level voltage, namely the voltage value of the output power supply V4; when the ambient temperature is lower than the preset temperature, the voltage value of the detection signal is greater than the preset voltage value, i.e., greater than the voltage value of the reference signal, so that the comparator U1 outputs the control signal of the high-level voltage, i.e., the voltage value of the output power supply V3.
In a preferred embodiment, the non-inverting input terminal and the inverting input terminal of the comparator U1 are further connected to the first capacitor C1 and the second capacitor C2, respectively, to stabilize the circuit and prevent the elements from being damaged due to sudden voltage or current changes.
In an alternative embodiment, the resistor R2 may be a Positive Temperature Coefficient (PTC) thermistor, the output terminal of the detection circuit is connected to the inverting input terminal of the comparator U1, and the output terminal of the reference circuit is connected to the non-inverting input terminal of the comparator U1, so that when the ambient temperature is higher than the preset temperature, the comparator U1 outputs a control signal of a low level voltage; when the ambient temperature is lower than the preset temperature, the comparator U1 outputs a control signal of a high level voltage.
The voltage compensation module 132 includes a power supply circuit and a voltage regulation circuit for providing a compensation voltage in accordance with the control signal. The power supply circuit provides a second voltage according to the control signal, the voltage regulating circuit receives the second voltage and provides a compensation voltage according to the second voltage, and when the ambient temperature is lower than the preset temperature, the voltage value of the second voltage provided by the power supply circuit is 0V.
The power supply circuit comprises a power supply V5 (a second power supply), a resistor R6 (a first resistor) and a switch tube Q1, and is used for providing a second voltage according to a control signal. The resistor R6 has a first terminal connected to the positive terminal of the power source V5 and a second terminal connected to the first path terminal of the switch Q1 for providing a second voltage. The control terminal of the switch Q1 receives the control signal, the second path terminal is connected to the ground, and the switch Q1 is, for example, an NMOS field effect transistor. When the environment temperature is higher than the preset temperature, the control signal is low-level voltage, the switching tube Q1 is turned off, and therefore the power supply circuit provides second voltage, and the voltage value of the second voltage is larger than 0V and not larger than the voltage value of the power supply V5; when the ambient temperature is lower than the preset temperature, the control signal is a high level voltage, the switching tube Q1 is turned on, and thus the second voltage provided by the power supply circuit is 0V.
In an alternative embodiment, the resistor R2 in the temperature detecting module 131 may be a Positive Temperature Coefficient (PTC) thermistor, and the switch Q1 is a PMOS field effect transistor, so that when the ambient temperature is higher than the preset temperature, the control signal is a high level voltage, and the switch Q1 is turned off, so that the power supply circuit provides the second voltage, and the voltage value of the second voltage is greater than 0V and not greater than the voltage value of the power supply V5; when the ambient temperature is lower than the preset temperature, the control signal is a low level voltage, the switching tube Q1 is turned on, and thus the second voltage provided by the power supply circuit is 0V.
The voltage regulating circuit includes an operational amplifier U2, a resistor R7 (second resistor), a resistor R8 (fourth resistor), and a resistor R9 (third resistor) to form an inverse closed-loop amplifier and output a compensation voltage according to the second voltage. The inverting input terminal of the operational amplifier U2 receives the second voltage via the resistor R7, the non-inverting input terminal is connected to the ground reference via the ninth resistor, the positive power supply terminal is connected to the positive terminal of the power supply V6, the negative power supply terminal is connected to the ground reference, and the output terminal provides the compensation voltage. The resistor R8 has a first terminal connected to the output terminal of the operational amplifier U2 and a second terminal connected to the inverting input terminal of the operational amplifier U2, and in this embodiment, the resistor R8 is an adjustable resistor for adjusting the closed-loop gain of the inverting closed-loop amplifier.
The voltage generating module 133 includes a power source V7 (a third power source), a resistor R10 (a fifth resistor), and a resistor R11 (a sixth resistor), the power source V7 is configured to provide a first voltage, the resistor R10 is connected to the output terminal of the voltage compensating module 132 and is configured to receive the compensation voltage, the resistor R11 is connected to the power source V7 and is configured to receive the first voltage, the resistor R10 and the resistor R11 are coupled in series between the compensation voltage and the first voltage, and one end of the resistor R10 connected to the resistor R11 provides a common voltage Vcom.
In this embodiment, the operation mode of the common voltage driving circuit 130 is as follows:
the voltage generating module 133 provides a first voltage when the common voltage driving circuit 130 is in an operating state. When the ambient temperature is lower than the preset temperature, the temperature detection module 131 provides a control signal of a high level voltage, so that the voltage compensation module 132 provides a compensation voltage with a voltage value of 0V, the common voltage driving circuit 130 provides a common voltage Vcom according to the first voltage, and outputs the common voltage Vcom to the display panel; when the ambient temperature is higher than the preset temperature, the temperature detection module 131 provides the control signal of the low level voltage, so that the voltage compensation module 132 provides the compensation voltage with a voltage value greater than 0V, the common voltage driving circuit 130 provides the common voltage Vcom according to the first voltage and the compensation voltage, and outputs the common voltage Vcom to the display panel.
Fig. 3 shows a schematic diagram of a display device according to an embodiment of the invention.
As shown in fig. 3, the display device 100 includes a display panel 101, a source chip 140, and a flexible circuit board 150. The display device 100 further includes a common voltage driving circuit (not shown) as shown in fig. 2, a temperature detection module and a voltage compensation module of the common voltage driving circuit are integrated on the flexible circuit board 150, and a voltage generation module is provided by the source chip 140.
The display panel 101 is used to generate a display screen according to at least a common voltage and a source driving signal.
The source chip 140 is disposed on a non-display region of the display panel, such as a back surface of the glass substrate, and provides at least a first voltage Vcom1 and a source driving signal.
The flexible circuit board 150, which integrates at least a temperature detection module and a voltage compensation module of the common voltage driving circuit, is connected to the display panel 101 via the flexible circuit board 151, and supplies a compensation voltage Vcom 2.
When the ambient temperature is lower than the preset temperature, the compensation voltage Vcom2 is 0V, and the magnitude of the common voltage is determined according to the magnitude of the first voltage Vcom 1; when the ambient temperature is higher than the preset temperature, the compensation voltage Vcom2 is greater than 0V, and the magnitude of the common voltage is determined according to the magnitudes of the first voltage Vcom1 and the compensation voltage Vcom 2.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A common voltage driving circuit for driving a display panel, the driving circuit comprising:
the temperature detection module is used for providing a control signal according to the ambient temperature;
the voltage compensation module is connected to the temperature detection module and used for providing compensation voltage according to the control signal; and
a voltage generating module connected to the voltage compensating module for providing a common voltage according to a first voltage and the compensating voltage,
wherein, when the environment temperature is lower than the preset temperature, the voltage value of the compensation voltage is 0V,
when the environment temperature is higher than the preset temperature, the voltage value of the compensation voltage is larger than 0V.
2. The driving circuit according to claim 1, wherein the temperature detection module comprises:
the detection circuit is used for providing a detection signal according to the environment temperature;
a reference circuit for providing a reference signal; and
a comparator for providing the control signal in dependence on the detection signal and the reference signal,
wherein the control signal is indicative of whether the ambient temperature is above the preset temperature,
when the environment temperature is lower than the preset temperature, the comparator outputs the control signal of high level voltage,
when the environment temperature is higher than the preset temperature, the comparator outputs the control signal of low level voltage.
3. The drive circuit according to claim 2, wherein the detection circuit comprises:
a first resistance circuit; and
a second resistance circuit connected in series with the first resistance circuit between a first power supply and a reference ground, one end of the second resistance circuit connected to the first resistance circuit providing the detection signal,
the second resistance circuit at least comprises a thermistor, and the conduction resistance value of the thermistor changes along with the ambient temperature, so that the detection signal represents the ambient temperature.
4. The driving circuit according to claim 2, wherein the temperature detection module further comprises:
a first capacitor connected to a first input terminal of the comparator; and
and the second capacitor is connected to the second input end of the comparator.
5. The driving circuit of claim 1, wherein the voltage compensation module comprises:
the power supply circuit is used for providing a second voltage according to the control signal; and
and the voltage regulating circuit is used for providing the compensation voltage according to the second voltage.
6. The drive circuit according to claim 5, wherein the power supply circuit comprises:
a first resistor, a first end of which is connected to a second power supply, and a second end of which provides the second voltage;
a switch tube, a first path end of the switch tube is connected to the second end of the first resistor, a second path end is connected to the reference ground, a control end receives the control signal,
wherein, when the control signal is a high level voltage, the voltage value of the second voltage is 0V,
when the control signal is a level voltage, the voltage value of the second voltage is greater than 0V and not greater than the voltage value of the second power supply.
7. The driving circuit of claim 5, wherein the voltage regulating circuit comprises:
the inverting input end of the operational amplifier receives the second voltage through a second resistor, the positive input end of the operational amplifier is connected to the reference ground through a third resistor, and the output end of the operational amplifier provides the compensation voltage; and
a fourth resistor connected between an output terminal and an inverting input terminal of the operational amplifier,
the third resistor is an adjustable resistor and is used for adjusting the gain of the operational amplifier so as to adjust the voltage value of the compensation voltage.
8. The driving circuit according to claim 1, wherein the voltage generation module comprises:
a third power supply for supplying the first voltage;
a fifth resistor, a first end of which is connected to the voltage compensation module, for receiving the compensation voltage; and
a sixth resistor having a first terminal connected to the third power source and a second terminal connected to the second terminal of the fifth resistor to provide the common voltage.
9. A display device, comprising:
a display panel for generating a display screen; and
the common voltage driving circuit as claimed in any one of claims 1 to 8, connected to the display panel, and supplying a common voltage to the display panel.
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| CN201921079421.2U CN210136714U (en) | 2019-07-11 | 2019-07-11 | Common voltage driving circuit and display device |
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| CN201921079421.2U CN210136714U (en) | 2019-07-11 | 2019-07-11 | Common voltage driving circuit and display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562607A (en) * | 2020-12-17 | 2021-03-26 | 昆山龙腾光电股份有限公司 | Common voltage compensation circuit for display panel, compensation method and display device |
| CN113112939A (en) * | 2021-04-02 | 2021-07-13 | 深圳市华星光电半导体显示技术有限公司 | Voltage compensation method and device of display device and display device |
| CN113238403A (en) * | 2021-05-21 | 2021-08-10 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114123733A (en) * | 2021-11-25 | 2022-03-01 | 长沙惠科光电有限公司 | Display circuit and device |
| CN114333716A (en) * | 2020-09-29 | 2022-04-12 | 北京小米移动软件有限公司 | Display control method, device, terminal equipment and storage medium |
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2019
- 2019-07-11 CN CN201921079421.2U patent/CN210136714U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114333716A (en) * | 2020-09-29 | 2022-04-12 | 北京小米移动软件有限公司 | Display control method, device, terminal equipment and storage medium |
| CN112562607A (en) * | 2020-12-17 | 2021-03-26 | 昆山龙腾光电股份有限公司 | Common voltage compensation circuit for display panel, compensation method and display device |
| CN113112939A (en) * | 2021-04-02 | 2021-07-13 | 深圳市华星光电半导体显示技术有限公司 | Voltage compensation method and device of display device and display device |
| CN113112939B (en) * | 2021-04-02 | 2023-10-17 | 深圳市华星光电半导体显示技术有限公司 | Voltage compensation method and device for display device and display device |
| CN113238403A (en) * | 2021-05-21 | 2021-08-10 | 厦门天马微电子有限公司 | Display panel and display device |
| CN113238403B (en) * | 2021-05-21 | 2022-07-19 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114123733A (en) * | 2021-11-25 | 2022-03-01 | 长沙惠科光电有限公司 | Display circuit and device |
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