CN111508418A - Driving circuit and driving method of display device - Google Patents
Driving circuit and driving method of display device Download PDFInfo
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- CN111508418A CN111508418A CN202010395526.XA CN202010395526A CN111508418A CN 111508418 A CN111508418 A CN 111508418A CN 202010395526 A CN202010395526 A CN 202010395526A CN 111508418 A CN111508418 A CN 111508418A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
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Abstract
The application discloses a drive circuit of a display device and a drive method thereof, the drive circuit of the display device comprises: the power supply management circuit and the overcurrent protection circuit; the power management circuit is internally provided with a power supply module for supplying power to a driving circuit of the display device; the overcurrent protection circuit is arranged in the power supply module and the signal processing module and is used for detecting the output current of the power supply module respectively at a light-load picture and a heavy-load picture, the light-load picture and the heavy-load picture respectively correspond to different normal working current values, and the power supply module is controlled to adjust the output current value according to the different current values of different display pictures when the output current is abnormal; has the advantages that: the current protection circuit is arranged in the power supply module and the signal processing module and used for detecting the output current of the power supply module and controlling the power supply module to adjust the output current value when the output current is abnormal, so that the problems that the current is too large when a light-load picture/a heavy-load picture is triggered by mistake, a power management chip is unprotected, a flip chip is burnt and the like are avoided.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a driving circuit and a driving method for a display device.
Background
Electrostatic discharge (ESD) is a problem that often occurs in life, and therefore, after a display panel is manufactured, an electrostatic discharge test is required to be performed, so that a current of a VAA is larger than a current during normal display, at present, in order to prevent some short circuits or other situations, an Over Current Protection (OCP) is set for each voltage, and the over current Protection current is generally set to be 1.5 times of a most heavy load.
Therefore, in the conventional driving circuit of the display device, there are problems that the current is too large when the light-load picture or the heavy-load picture is triggered by mistake and the power management chip is not protected to cause burning of the flip chip film when the static discharge test is performed, and improvement is urgently needed.
Disclosure of Invention
The embodiment of the application provides a driving circuit and a driving method of a display device, which are used for solving the problems that when an electrostatic discharge test is carried out, the current is too large when a light-load picture or a heavy-load picture is triggered by mistake, a power management chip is not protected, and a flip chip is burnt.
An embodiment of the present application provides a driving circuit of a display device, including: the power supply management circuit and the overcurrent protection circuit;
the power management circuit is internally provided with a power supply module for supplying power to a driving circuit of the display device;
the overcurrent protection circuit is provided with a signal processing module, the signal processing module is electrically connected with the power supply module, the signal processing module is used for detecting output currents of the power supply module respectively in a light-load picture and a heavy-load picture, the light-load picture and the heavy-load picture respectively correspond to different normal working current values, and the power supply module is controlled to adjust the output current values according to different current values under different display pictures when the output currents are abnormal.
In an embodiment provided by the present application, the signal processing module includes:
the signal receiving module is used for receiving the RX signal sent by the front end and transmitting the RX signal to the picture identification module;
the picture identification module is used for judging whether the current picture information of the display device belongs to a light-load picture or a heavy-load picture;
the signal conversion module resets the output current of the power supply module when the picture is lightly loaded or heavily loaded so as to ensure the normal working state;
the second signal output module is used for outputting the picture display information;
and a current control register and a power supply are arranged in the power supply module.
In an embodiment provided by the present application, the current control register includes: the device comprises a detection unit, a storage unit, a comparison unit and a reset unit.
In an embodiment provided by the present application, the image recognition module in the signal processing module is electrically connected to the power supply module through a two-wire serial bus, and different overcurrent gears are disposed in the power supply module.
In an embodiment provided by the present application, the overcurrent position includes: the overcurrent control device comprises a first overcurrent gear and a second overcurrent gear, wherein the first overcurrent gear corresponds to a light-load picture, and the second overcurrent gear corresponds to a heavy-load picture; and the first overcurrent gear and the second overcurrent gear both have certain preset current.
In an embodiment provided by the present application, the preset current value of the first overcurrent shift is: 1.5A; the preset current value of the second overcurrent gear is as follows: 3A.
In an embodiment provided by the present application, the preset current value of each overcurrent position occupies 2 bits of the memory of the current control register in a binary system.
In an embodiment provided by the present application, the power management circuit includes: the device comprises a power supply module, a signal sending module, a signal processing module, a signal transmission module and a first signal output module.
In an embodiment provided by the present application, the signal sending module, the signal processing module, and the signal transmission module are connected in series with the first signal output module; the signal processing module and the signal transmission module are connected with the power supply module in parallel.
The present application further provides a driving method of a display device, which uses all the driving circuits of the display device, and the method includes the following steps:
s10, powering on the system, and powering on the signal sending module and the power supply module;
s20, the signal sending module transmits signal information to the signal processing module;
s30, the signal processing module converts the received signal information and sends an enabling signal to the power supply module;
s40, when the power supply module receives the enable signal, the current protection circuit starts to work, identifies the current information of the light-load picture or the heavy-load picture, resets the current value of the output light-load picture or the heavy-load picture to a corresponding preset current value according to different current grades, and transmits an analog signal to the source electrode chip on film;
s50, at the same time, the signal processing module converts the low voltage differential signal into a mini low voltage differential signal, and transmits the digital signal to the source electrode chip on film;
and S60, the source electrode chip on film transmits the signal to the display panel, so that the display panel displays the picture information again.
Compared with the prior art, the driving circuit and the driving method of the display device have the advantages that:
1. firstly, in the driving circuit of the display device provided by the application, the current protection circuit is arranged in the power supply module and the signal processing module and is used for detecting the output current of the power supply module and controlling the power supply module to stop working or reduce output when the output current is abnormal, so that the problems that the current is too large when a light-load picture or a heavy-load picture is triggered by mistake, a power management chip is not protected, a flip chip is burnt and the like are avoided;
2. secondly, include in the power module: the power supply module is used for controlling the power supply module to adjust the output current value when the output current is abnormal.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a first frame schematic diagram of a driving circuit of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic frame diagram of a power supply module in a driving circuit of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a frame of a signal processing module in a driving circuit of a display device according to an embodiment of the present disclosure.
Fig. 4 is a second frame schematic diagram of a driving circuit of a display device according to an embodiment of the present disclosure.
Fig. 5 is a flowchart illustrating a driving method of a display device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Specifically, referring to fig. 1 to 5, an embodiment of the present application provides a driving circuit and a driving method of a display device.
Referring to fig. 1, a first frame schematic diagram 100 of a driving circuit of a display device according to an embodiment of the present disclosure is shown. The driving circuit of the display device includes: the power supply management circuit and the overcurrent protection circuit; a power supply module 2 is arranged in the power supply management circuit and used for supplying power to a driving circuit of the display device; the overcurrent protection circuit is provided with a signal processing module 3, the signal processing module is electrically connected with the power supply module, the signal processing module is used for detecting output currents of the power supply module 2 respectively in a light-load picture and a heavy-load picture, the light-load picture and the heavy-load picture respectively correspond to different normal working current values, and the power supply module 2 is controlled to adjust the output current values according to different current values under different display pictures when the output currents are abnormal.
Further, as can be seen from fig. 1, the power management circuit includes: the device comprises a power supply module 2, a signal sending module 1, a signal processing module 3, a signal transmission module 4 and a first signal output module 5. Specifically, in the embodiment of the present application, the power supply module 2 employs a power management chip to supply power to the signal processing module 3, so that the signal processing module 3 can normally operate; when the power supply module 2 is not conductive, the signal processing module 3 cannot operate. The signal transmission module 1 is a System On Chip (SOC), which is a complete System formed by functional modules of a plurality of different electronic circuits integrated on a single Chip, and can be used for controlling electronic devices or implementing one or more intelligent functions. In order to reduce the power consumption of the electronic device, the system on chip generally comprises a sleep state and a working state, wherein in the sleep state, the electronic device is in a sleep state and the power consumption is low; when the electronic equipment is in a working state, the electronic equipment normally works to realize corresponding functions, and more electric quantity is consumed compared with a dormant state; the system on chip in the application only needs to normally send the current and the picture signal transmitted by the front end to the signal processing module 3 after the power supply module 2 is powered on; when the power supply module 2 is not powered on, the system on chip can enter a dormant state; the normal switching between the working state and the dormant state is realized, so that the electronic equipment can save more electricity while working normally.
Further, in the embodiment of the present application, the signal transmission module 4 is a source chip on film, and is mainly used for connecting the signal processing module 3 with the first signal output module 5, so that the first signal output module 5 can normally display the image information.
Further, referring to fig. 3, the signal processing module 3 includes a signal receiving module 31 configured to receive an RX signal sent by a front end and transmit the RX signal to a picture recognition module, a picture recognition module 32 configured to determine whether picture information of the display device belongs to a light-load picture or a heavy-load picture, a signal conversion module 33 configured to reset an output current of the power supply module when the picture information belongs to the light-load picture or the heavy-load picture so as to ensure a normal operating state, and a second signal output module 34 configured to output picture display information, wherein a current control register and a power supply 21 are disposed in the power supply module 2, the signal receiving module 31 receives the RX signal of the signal sending module 1 and transmits the RX signal to the picture recognition module 32, the picture recognition module 32 determines whether the current information of the display device belongs to the light-load picture or the heavy-load picture according to a current value and a gray scale value of the RX signal, and then the picture recognition module 32 transmits the identified picture state to the signal conversion module 33 and a reset unit in the power supply module 21 (the picture recognition module 32 is electrically connected to the power supply module 21, so that the identified picture state is changed to the TX signal conversion module 33 and the power supply module 32 and the power supply module 21 outputs a low-load signal to reduce a power consumption signal, so that the VDS signal conversion module 21 and the VDS signal is still outputs a VDS signal, so as to ensure that the VDS signal conversion module 32 and the power supply module 21, so as to reduce the power supply signal conversion module 21, and further to reduce the power supply signal conversion module 21, so as to reduce the power supply signal conversion module 32.
Further, referring to fig. 2, the current control register is composed of a storage unit 23, a detection unit 22, a comparison unit 24, and a reset unit 25. The storage unit 23 stores the working current values of the light-load picture and the heavy-load picture during normal operation, when the detection unit 22 detects the current value of the light-load picture or the heavy-load picture, the storage unit 23 and the detection unit 22 transmit signal information to the comparison unit 24, and the comparison unit 24 compares the normal working current of the light-load picture or the heavy-load picture preset in the storage unit 23 with the currently detected picture current value of the display device.
Further, the comparing unit 24 first determines whether the current frame current of the display device belongs to a normal operating current or an abnormal operating current, and if the current frame current of the display device belongs to a normal operating current, the signal information may be directly output to the signal transmission module 4 without resetting; if the current frame current of the display device belongs to the abnormal working current, the light-load frame and the heavy-load frame are judged by combining the frame identification module 32 in the signal processing module 3, and then the output current values of the light-load frame and the heavy-load frame are respectively reset according to the protection current ranges of the light-load frame and the heavy-load frame, so as to control the power supply module 2121 to stop working or reduce output.
Specifically, the frame recognition module 32 in the signal processing module 3 is electrically connected to the power supply module 21 through a two-wire serial bus (I2C bus), that is, the SDA (serial data line) and the SC L (serial clock line) are both bidirectional I/O lines, the I2C bus only needs one data line and one clock line and two lines, the bus interface is already integrated inside the chip, no special interface circuit is needed, and the filter of the on-chip interface circuit can filter out the glitches on the bus data, so the I2C bus simplifies the hardware circuit PCB wiring, reduces the system cost, and improves the system reliability.
Furthermore, the signal processing module 3 is a time sequence control chip, and includes an input port and an output port, the input port of the time sequence control chip is electrically connected to the signal sending module, and the output port is electrically connected to the signal transmission module, and converts the low-voltage differential signal into a mini low-voltage differential signal, and transmits the mini low-voltage differential signal to the signal transmission module in the form of a digital signal; in addition, after the image recognition module of the signal processing module recognizes that the current display image of the display device belongs to a light-load image or a heavy-load image, the signal processing module sends an enable signal to the power supply module, so that the detection unit in the power supply module starts to work.
Further, the signal transmission module 4 is a source electrode chip on film, and the signal transmission module comprises a half-voltage power supply mode or a full-voltage power supply mode; the first signal output module 5 is a display panel for displaying various image states.
Further, in the embodiment of the application, the gear of the current protection is distinguished according to the light-load picture and the heavy-load picture. The heavy-load picture is in a state that the row pixel units are opened at intervals of one row and are closed at intervals of one row, namely one row of pixels is bright and one row of pixels is dark; in other modes, the bright and dark states of the pixels are light load states, that is, the pixel units are all opened, and all closed or partially opened, which belong to light load states. Specifically, when the display device is in a light load picture, the normal working current value I1 is I1 which is less than or equal to 1A; when the display device is in a heavy load picture, the normal working current value I2 is more than 1A and less than or equal to 2A and more than or equal to I2;
further, since the overcurrent protection current is generally 1.5 times of the heaviest load of the display device during normal operation, the protection current in the power supply module can be divided into different overcurrent gears, namely a first overcurrent gear and a second overcurrent gear, according to the heaviest load current of the light-load picture and the heaviest load current of the heavy-load picture, wherein the first overcurrent gear corresponds to the light-load picture, and the second overcurrent gear corresponds to the heavy-load picture; further, the first overcurrent gear and the second overcurrent gear both have certain preset currents, and the preset current value of the first overcurrent gear is as follows: 1.5A, the preset current value of the second overcurrent gear is as follows: 3A. When the current value of the light-load picture is larger than or equal to 1.5A, the reset unit resets the detected current value, so that the current value is equal to I1 again; when the current value of the reloading picture is greater than or equal to 3A, the reset unit resets the detected current value so that the current value is equal to I2 again.
Further, in some embodiments of the present application, the preset current value of each of the overcurrent gears occupies 2 bits of the memory of the current control register in a binary system.
Further, the signal sending module 1, the signal processing module 3, the signal transmission module 4 and the first signal output module 5 are connected in series; the signal processing module 3 and the signal transmission module 4 are connected with the power supply module 2 in parallel; the signal processing module 3 transmits digital signals to the signal transmission module 4, and the power supply module 2 transmits analog signals to the signal transmission module 4.
Fig. 4 is a second frame schematic diagram 400 of a driving circuit of a display device according to an embodiment of the present disclosure. The signal transmission module 1, the power supply module 2, the signal processing module 3, the signal transmission module 4 and the first signal output module 5 are included, and the connection relationship between the inside and the outside of the modules.
The present application also provides a display device including the driving circuits of all of the above display devices.
Referring to fig. 5, the present application further provides a driving method of a display device, which uses all the driving circuits of the display device, and the method includes the following steps: s10, powering on the system, and powering on the signal sending module and the power supply module; s20, the signal sending module transmits signal information to the signal processing module; s30, the signal processing module converts the received signal information and sends an enabling signal to the power supply module; s40, when the power supply module receives the enable signal, the current protection circuit starts to work, identifies the current information of the light-load picture or the heavy-load picture, resets the current value of the output light-load picture or the heavy-load picture to a corresponding preset current value according to different current grades, and transmits an analog signal to the source electrode chip on film; s50, at the same time, the signal processing module converts the low voltage differential signal into a mini low voltage differential signal, and transmits the digital signal to the source electrode chip on film; and S60, the source electrode chip on film transmits the signal to the display panel, so that the display panel displays the picture information again.
Therefore, the driving circuit of the display device has the advantages that: firstly, in the driving circuit of the display device provided by the application, the current protection circuit is arranged in the power supply module and the signal processing module and is used for detecting the output current of the power supply module and controlling the power supply module to stop working or reduce output when the output current is abnormal, so that the problems that the current is too large when a light-load picture or a heavy-load picture is triggered by mistake, a power management chip is not protected, a flip chip is burnt and the like are avoided; secondly, include in the power module: the power supply module comprises a power supply source and a current control register, wherein a detection unit, a storage unit, a comparison unit and a reset unit are arranged in the current control register, and the power supply module can be more accurately controlled to stop working or reduce output when output current is abnormal according to comparison between the detected current value of a picture and a preset normal working current value of a light-load picture or a heavy-load picture.
The foregoing describes in detail a driving circuit and a driving method of a display device provided in an embodiment of the present application, and a specific example is applied to illustrate the principle and the implementation of the present application, and the description of the foregoing embodiments is only used to help understand the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A driving circuit of a display device, comprising: the power supply management circuit and the overcurrent protection circuit;
the power management circuit is internally provided with a power supply module for supplying power to a driving circuit of the display device;
the overcurrent protection circuit is provided with a signal processing module, the signal processing module is electrically connected with the power supply module, the signal processing module is used for detecting output currents of the power supply module respectively in a light-load picture and a heavy-load picture, the light-load picture and the heavy-load picture respectively correspond to different normal working current values, and the power supply module is controlled to adjust the output current values according to different current values under different display pictures when the output currents are abnormal.
2. The driving circuit of a display device according to claim 1, wherein the signal processing module comprises:
the signal receiving module is used for receiving the RX signal sent by the front end and transmitting the RX signal to the picture identification module;
the picture identification module is used for judging whether the current picture information of the display device belongs to a light-load picture or a heavy-load picture;
the signal conversion module resets the output current of the power supply module when the picture is lightly loaded or heavily loaded so as to ensure the normal working state;
the second signal output module is used for outputting the picture display information;
and a current control register and a power supply are arranged in the power supply module.
3. The driving circuit of the display device according to claim 2, wherein the current control register comprises: the device comprises a detection unit, a storage unit, a comparison unit and a reset unit.
4. The driving circuit of the display device according to claim 2, wherein the image recognition module in the signal processing module is electrically connected to the power supply module through a two-wire serial bus, and different overcurrent gears are disposed in the power supply module.
5. The driving circuit of the display device according to claim 4, wherein the overcurrent position is: the overcurrent control device comprises a first overcurrent gear and a second overcurrent gear, wherein the first overcurrent gear corresponds to a light-load picture, and the second overcurrent gear corresponds to a heavy-load picture; and the first overcurrent gear and the second overcurrent gear both have certain preset current.
6. The driving circuit of the display device according to claim 5, wherein the preset current value of the first overcurrent shift stage is: 1.5A; the preset current value of the second overcurrent gear is as follows: 3A.
7. The driving circuit of a display device according to claim 5, wherein the preset current value of each overcurrent step occupies 2 bits of the memory of the current control register in a binary system.
8. The driving circuit of a display device according to claim 1, wherein the power management circuit further comprises: the device comprises a signal sending module, a signal processing module, a signal transmission module and a first signal output module.
9. The driving circuit of a display device according to claim 8, wherein the signal transmitting module, the signal processing module, and the signal transmitting module are connected in series with the first signal output module; the signal processing module and the signal transmission module are connected with the power supply module in parallel.
10. A driving method of a display device, characterized in that a driving circuit of a display device according to any one of claims 1 to 9 is used, the method comprising the steps of:
s10, powering on the system, and powering on the signal sending module and the power supply module;
s20, the signal sending module transmits signal information to the signal processing module;
s30, the signal processing module converts the received signal information and sends an enabling signal to the power supply module;
s40, when the power supply module receives the enable signal, the current protection circuit starts to work, identifies the current information of the light-load picture or the heavy-load picture, resets the current value of the output light-load picture or the heavy-load picture to a corresponding preset current value according to different current grades, and transmits an analog signal to the source electrode chip on film;
s50, at the same time, the signal processing module converts the low voltage differential signal into a mini low voltage differential signal, and transmits the digital signal to the source electrode chip on film;
and S60, the source electrode chip on film transmits the signal to the display panel, so that the display panel displays the picture information again.
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| CN113992005A (en) * | 2021-10-18 | 2022-01-28 | Tcl华星光电技术有限公司 | Display power supply module and display device |
| CN114242014A (en) * | 2021-12-17 | 2022-03-25 | 深圳创维－Rgb电子有限公司 | COF temperature control circuit, driving method and terminal equipment |
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| CN113992005B (en) * | 2021-10-18 | 2024-01-30 | Tcl华星光电技术有限公司 | Display power supply module and display device |
| CN114242014A (en) * | 2021-12-17 | 2022-03-25 | 深圳创维－Rgb电子有限公司 | COF temperature control circuit, driving method and terminal equipment |
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| CN111508418B (en) | 2023-04-07 |
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