CN109215597B - Display driving circuit and television - Google Patents
Display driving circuit and television Download PDFInfo
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- CN109215597B CN109215597B CN201811190847.5A CN201811190847A CN109215597B CN 109215597 B CN109215597 B CN 109215597B CN 201811190847 A CN201811190847 A CN 201811190847A CN 109215597 B CN109215597 B CN 109215597B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
Abstract
A display driver circuit, comprising: the input-output interface module, the decoding chip, the backlight module, the lamp effect control module and the power module, the backlight module receives and outputs backlight current to the display screen according to at least one of the PWM control signal and the DC control signal, so that the backlight module can simultaneously support PWM dimming and DC dimming, and can control the output of the backlight current to be turned off within a set time, thereby controlling the backlight response time of a dynamic picture, and further turning off the dynamic fuzzy picture to obtain a high-definition dynamic picture, the full-color atmosphere lamp bright-dark display is controlled according to the indication control signal by additionally arranging the lamp effect control module, and the display result is fed back to the decoding chip, so that the display driving circuit can control the brightness of the full-color atmosphere lamp, thereby enhancing the display effect, and improving the satisfaction degree of user visual experience, in addition, the USB interface module is additionally arranged, the display driving circuit can read and write the U disk, the mobile hard disk and the like.
Description
Technical Field
The invention belongs to the technical field of television control, and particularly relates to a display driving circuit and a television.
Background
At present, the liquid crystal display industry is rapidly developed, and a liquid crystal display screen with high resolution gradually becomes a trend, so people generally pay attention to how to improve the resolution of the liquid crystal display screen; however, the backlight module in the display driving circuit can only perform PWM dimming or DC dimming singly, but cannot support both PWM dimming and DC dimming, and cannot control to turn off the backlight current output within a set time, so that the backlight response time of a dynamic picture of the display screen cannot be controlled, and further the dynamic blurred picture cannot be turned off; in addition, the display driving circuit cannot control the brightness of the full-color atmosphere lamp, so that the visual experience effect of a user is poor.
Therefore, the display driving circuit in the conventional technical solution has the problems that the motion blur picture cannot be turned off and the brightness of the full-color ambient light cannot be controlled.
Disclosure of Invention
The invention provides a display driving circuit and a television, and aims to solve the problems that a display driving circuit in the traditional technical scheme cannot turn off a dynamic fuzzy picture and cannot control the brightness of a full-color atmosphere lamp.
The present invention is achieved as described above, and a display drive circuit includes:
an input-output interface module connected with an external device for inputting and outputting data signals from and to the external device;
the decoding chip is connected with the input-output interface module and used for processing the data signal to output a backlight control signal and an indication control signal;
the backlight module is connected between the decoding chip and the display screen, and is used for receiving and being controlled by the backlight control signal so as to output backlight current to the display screen; the backlight module is further configured to receive and be controlled by at least one of the PWM control signal and the DC control signal, so as to output a backlight current to the display screen to control a backlight response time of a dynamic picture;
the lamp effect control module is connected between the decoding chip and the full-color atmosphere lamp, and is used for receiving and controlling the full-color atmosphere lamp to display bright and dark according to the indication control signal and feeding back a display result to the decoding chip; and
and the power supply module is respectively connected with the input-output interface module, the backlight module, the lamp effect control module and the decoding chip and is used for supplying power.
In addition, a television is also provided, and the television comprises the display driving circuit.
In the display driving circuit, the backlight module is additionally arranged to receive and output the backlight current to the display screen according to the PWM control signal and/or the DC control signal, so that the backlight module can simultaneously support PWM dimming and DC dimming, and can control the output of the backlight current to be switched off within a set time, thereby controlling the backlight response time of a dynamic picture and further switching off the dynamic blurred picture to obtain a high-definition dynamic picture; in addition, still add the lamp and imitated the control module and received and control full-color atmosphere lamp bright and dark demonstration according to instructing control signal, to decoding chip feedback display result simultaneously for show drive circuit can control the bright and dark of full-color atmosphere lamp, thereby has strengthened the display effect, has promoted user's visual experience satisfaction.
Drawings
Fig. 1 is a block diagram of a display driving circuit according to an embodiment of the invention;
FIG. 2 is a block diagram of a display driver circuit according to another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a backlight module according to an embodiment of the invention;
fig. 4 is a schematic circuit diagram of a lamp effect control module according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a block diagram of a display driving circuit according to a preferred embodiment of the present invention, which only shows the relevant parts of the present embodiment for convenience of description, and the following details are provided:
referring to fig. 1, the display driving circuit includes: an input-output interface module 20, a decoding chip 10, a backlight module 30, a lamp effect control module 40 and a power supply module 50.
Wherein, the input-output interface module 20 is connected with an external device, and is used for inputting data signals from the external device and outputting data signals to the external device; the decoding chip 10 is connected to the input-output interface module 20, and is configured to process the digital signal to output a backlight control signal and an indication control signal; the backlight module 30 is connected between the decoding chip 10 and the display screen, and is configured to receive and be controlled by a backlight control signal to output a backlight current to the display screen; the backlight module 30 is further configured to receive and be controlled by at least one of the PWM control signal and the DC control signal, so as to output a backlight current to the display screen to control a backlight response time of a dynamic picture; the lamp effect control module 40 is connected between the decoding chip 10 and the full-color atmosphere lamp, and is configured to receive and control the full-color atmosphere lamp to perform bright-dark display according to the indication control signal, and simultaneously feed back a display result to the decoding chip 10; the power module 50 is respectively connected to the input-output interface module 20, the backlight module 30, the lamp effect control module 40 and the decoding chip 10 for supplying power. In a particular embodiment, the input-output interface module 20 includes a high definition digital display interface, a high definition multimedia interface, a keyboard interface, a mouse interface, an audio input-output interface, and a speaker interface. The decoding chip 10 is a chip with the model of MST9U25Q 1.
As described above, the input-output interface module 20 is configured to input and output data signals from and to an external device, the decoding chip 10 performs signal processing on the data signals to output at least one of a PWM control signal and a DC control signal to the backlight module 30, and outputs an indication control signal to the light effect control module 40, so that the backlight module 30 receives and controls to output a backlight current to the display screen according to at least one of the PWM control signal and the DC control signal to control a backlight response time of a dynamic picture to turn off the dynamic blurred picture, so that the light effect control module 40 receives and controls a full-color ambient light bright-dark display according to the indication control signal and feeds back a display result to the decoding chip 10.
In this embodiment, by additionally providing the backlight module 30 to receive and control the backlight current output to the display screen according to at least one of the PWM control signal and the DC control signal, the backlight module 30 can simultaneously support PWM dimming and DC dimming, and can control to turn off the backlight current output within a set time, thereby controlling the backlight response time of a dynamic picture, and further turning off the dynamic blurred picture to obtain a high-definition dynamic picture; in addition, still add the light and imitated the control module 40 and received and control full-color atmosphere lamp bright and dark demonstration according to instructing control signal, to decoding chip 10 feedback display result simultaneously for the display drive circuit can control the bright and dark of full-color atmosphere lamp, thereby has strengthened the display effect, has promoted user's visual experience satisfaction.
In one embodiment, referring to fig. 3, the backlight module 30 includes: a first filtering unit 305, a boosting unit 301, a current detecting unit 302, a voltage detecting unit 303, and a backlight chip 304. The first filtering unit 305 is connected to the power output end of the power module 50, and is configured to filter the output voltage; the voltage boosting unit 301 is connected to the first filtering unit 305, and is configured to perform voltage conversion on the filtered output voltage; the current detection unit 302 is connected to the voltage boost unit 301, and is configured to detect an output current of the voltage boost unit 301 and output an overcurrent detection signal; the voltage detection unit 303 is connected to the voltage boosting unit 301, and is configured to detect an output voltage of the voltage boosting unit 301 and output an overvoltage detection signal; the backlight chip 304 is respectively connected to the decoding chip 10, the voltage boosting unit 301, the current detecting unit 302, the voltage detecting unit 303 and the display screen, and is configured to receive and be controlled by at least one of a PWM control signal, a DC control signal, an overcurrent detection signal and an overvoltage detection signal to adjust the backlight current output by the voltage boosting unit 301. The backlight module 30 provided in this embodiment can simultaneously support PWM dimming and DC dimming, and can control to turn off the output of the backlight current within a set time, thereby controlling the backlight response time of a dynamic picture, and further turning off the dynamic blurred picture to obtain a high-definition dynamic picture.
In one embodiment, referring to fig. 3, the boosting unit 301 includes: a first inductor L1, a second inductor L2, a first voltage regulator ZD1, a first magnetic bead FB1 and a first switch tube Q1; a first end of the first inductor L1 and a second end of the second inductor L2 are commonly connected as an input end of the voltage boosting unit 301 and are connected to an output end of the first filtering unit 305, a second end of the first inductor L1, a second end of the second inductor L2, a first end of the first magnetic bead FB1, and an output end of the first switching tube Q1 are commonly connected, a control end of the first switching tube Q1 is used as a control end of the voltage boosting unit 301 and is connected to a switch control signal pin GATE of the backlight chip 304, an input end of the first switching tube Q1 is connected to the current detection unit 302, a second end of the first magnetic bead FB1 is connected to an anode of the first voltage regulator ZD1, and a cathode of the first voltage regulator ZD1 is used as an output end of the voltage boosting unit 301 and is connected to the display screen ZD 1. In a specific embodiment, the first switch Q1 may be an NMOS transistor, and the gate, the source, and the drain of the NMOS transistor are respectively the control terminal, the input terminal, and the output terminal of the first switch Q1; the first switch transistor Q1 may also be a PMOS transistor, and a gate, a source, and a drain of the PMOS transistor are respectively a control terminal, an output terminal, and an input terminal of the first switch transistor Q1.
In one embodiment, referring to fig. 3, the current detection unit 302 includes: a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; the first end of the first resistor R1, the first end of the second resistor R2, the first end of the third resistor R3, and the first end of the fourth resistor R4 are commonly connected to the output terminal of the current detection unit 302 and to the over-current detection pin CS of the backlight chip 304, the second end of the second resistor R2, the second end of the third resistor R3, and the second end of the fourth resistor R4 are commonly connected to ground, and the second end of the first resistor R1 is connected to the control terminal of the voltage boost unit 301.
In one embodiment, referring to fig. 3, the voltage detection unit 303 includes: a fifth resistor R5 and a sixth resistor R6, wherein a first end of the fifth resistor R5 is used as an input end of the voltage detection unit 303 and is connected to an output end of the voltage boost unit 301, a second end of the fifth resistor R5 and a first end of the sixth resistor R6 are commonly connected as an output end of the voltage detection unit 303 and are connected to the overvoltage detection pin OVP of the backlight chip 304, and a second end of the sixth resistor R6 is connected to ground.
In one embodiment, referring to fig. 3, the first filtering unit 305 includes a seventeenth capacitor C17 and an eighteenth capacitor C18, a first terminal of the seventeenth capacitor C17 and a first terminal of the eighteenth capacitor C18 are commonly connected to ground, and a second terminal of the seventeenth capacitor C17 and a second terminal of the eighteenth capacitor C18 are commonly connected to form an input terminal and an output terminal of the first filtering unit 305.
In one embodiment, referring to fig. 3, the backlight chip 304 is a chip with model number OB3365C _ ETSSOP16, wherein the chip OB3365C _ ETSSOP16 includes a backlight enable control pin ENA, an over-current detection pin CS, an over-voltage detection pin OVP, a switch control signal pin GATE, a PWM control signal input pin PWM, a DC control signal input pin ADIM, a chip operating power pin VIN, a GND pin, a first backlight current output pin LED1, a second backlight current output pin LED2, a third backlight current output pin LED3, and a fourth backlight current output pin LED 4.
In one embodiment, referring to fig. 3, the backlight module 30 further includes a second filtering unit 306, where the second filtering unit 306 is connected between the voltage boosting unit 301 and the display screen, and is used for filtering the output voltage of the voltage boosting unit 301.
In one embodiment, referring to fig. 3, the second filtering unit 306 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6; the first end of the first capacitor C1, the first end of the second capacitor C2, the first end of the third capacitor C3, and the first end of the fourth capacitor C4 are connected to ground in common, the second end of the third capacitor C3, the second end of the fourth capacitor C4, the first end of the fifth capacitor C5, and the first end of the sixth capacitor C6 are connected to ground in common, and the second end of the first capacitor C1, the second end of the second capacitor C2, the second end of the fifth capacitor C5, and the second end of the sixth capacitor C6 are connected to form the input terminal and the output terminal of the second filtering unit 306 in common.
In one embodiment, referring to fig. 3, the backlight module 30 further includes a first current limiting unit 307, and the first current limiting unit 307 is used for current limiting processing. In a specific embodiment, the first current limiting unit 307 includes a seventh resistor R7, a first end of the seventh resistor R7 is connected to the output terminal of the first filtering unit 305, and a second end of the seventh resistor R7 is connected to the chip operating power supply pin VIN.
In one embodiment, referring to fig. 3, the backlight module 30 further includes a third filtering unit 308, where the third filtering unit 308 is connected between the backlight chip 304 and the voltage detecting unit 303 and is used for filtering the overvoltage detection signal. In a specific embodiment, the third filtering unit 308 includes a seventh capacitor C7, a first terminal of the seventh capacitor C7 is used as the input terminal of the third filtering unit 308 and is connected to the output terminal of the voltage detecting unit 303, and a second terminal of the seventh capacitor C7 is used as the output terminal of the third filtering unit 308 and is connected to the over voltage detecting pin OVP of the backlight chip 304. The present embodiment can make the detection result of the voltage detection unit 303 more accurate by providing the third filtering unit 308.
In one embodiment, referring to fig. 4, the lamp effect control module 40 includes: a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28 and a main control chip; the twenty-third resistor R23 is connected between the indication control signal output pin of the decoder chip 10 and the indication control signal input pin P0.5 of the main control chip, the twenty-fourth resistor R24 is connected between the indication control signal feedback pin of the decoder chip 10 and the indication control signal output pin P0.4 of the main control chip, the twenty-fifth resistor R25 is connected between the level output pin of the decoder chip 10 and the level input pin P0.1 of the main control chip, the first end of the twenty-sixth resistor R26 is connected with the first indication control pin P0.2 of the main control chip, the second end of the twenty-sixth resistor R26 and the first end of the twenty-eighth resistor R28 are connected to the full-color atmosphere lamp, the first end of the twenty-seventh resistor R27 is connected with the second indication control pin P0.3 of the main control chip, and the second end of the twenty-seventh resistor R27 and the second end of the twenty-eighth resistor R28 are connected to the full-color atmosphere lamp. The lamp effect control module 40 that this embodiment set up receives and shows according to instructing full-color atmosphere lamp bright and dark of control signal control, shows the result to decoding chip 10 feedback simultaneously for the display drive circuit can control the bright and dark of full-color atmosphere lamp, thereby has strengthened the display effect, has promoted user's visual experience satisfaction.
In one embodiment, the main control chip is a chip with model number HC89F 003.
In one embodiment, referring to fig. 2, the display driving circuit further includes a USB interface module 60, and the USB interface module 60 is connected to the decoding chip 10 for connecting a USB device. In this embodiment, by setting the USB interface module 60, not only the commonly used input devices (keyboard and mouse) can be accessed, but also the USB disk and the mobile hard disk can be accessed, so that the display driving circuit can read and write the USB disk and the mobile hard disk.
In addition, a television is also provided, and the television comprises the display driving circuit.
The invention has the beneficial effects that:
(1) the backlight module is additionally arranged to receive and control the backlight current output to the display screen according to at least one of the PWM control signal and the DC control signal, so that the backlight module can simultaneously support PWM dimming and DC dimming, and can control the turn-off of the output of the backlight current within a set time, thereby controlling the backlight response time of a dynamic picture and further turning off the dynamic blurred picture to obtain a high-definition dynamic picture.
(2) Add the lamp effect control module and receive and show according to instructing full-color atmosphere lamp bright and dark of control signal control, to decoding chip feedback display result simultaneously for the display drive circuit can control the bright and dark of full-color atmosphere lamp, thereby has strengthened the display effect, has promoted user's visual experience satisfaction.
(3) The USB interface module is additionally arranged, so that not only can common input equipment (a keyboard and a mouse) be accessed, but also a U disk, a mobile hard disk and the like can be accessed, and the display driving circuit can read and write the U disk, the mobile hard disk and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A display driving circuit, comprising:
an input-output interface module connected with an external device for inputting and outputting data signals from and to the external device;
the decoding chip is connected with the input-output interface module and used for processing the data signal to output a backlight control signal and an indication control signal;
the backlight module is connected between the decoding chip and the display screen, and is used for receiving and being controlled by the backlight control signal so as to output backlight current to the display screen; the backlight module is further configured to receive and be controlled by at least one of the PWM control signal and the DC control signal, so as to output a backlight current to the display screen to control a backlight response time of a dynamic picture;
the lamp effect control module is connected between the decoding chip and the full-color atmosphere lamp, and is used for receiving and controlling the full-color atmosphere lamp to display bright and dark according to the indication control signal and feeding back a display result to the decoding chip; and
the power supply module is respectively connected with the input-output interface module, the backlight module, the lamp effect control module and the decoding chip and is used for supplying power;
the lamp effect control module comprises: the circuit comprises a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor and a main control chip;
the twenty-third resistor is connected between the indication control signal output pin of the decoding chip and the indication control signal input pin of the main control chip, the twenty-fourth resistor is connected between the indication control signal feedback pin of the decoding chip and the indication control signal output pin of the main control chip, the twenty-fifth resistor is connected between a level output pin of the decoding chip and a level input pin of the main control chip, a first end of the twenty-sixth resistor is connected with a first indication control pin of the main control chip, a second terminal of the twenty-sixth resistor and a first terminal of the twenty-eighth resistor are commonly connected to the full-color ambient lamp, the first end of the twenty-seventh resistor is connected with a second indication control pin of the main control chip, a second terminal of the twenty-seventh resistor and a second terminal of the twenty-eighth resistor are commonly connected to the full-color atmosphere lamp.
2. The display driving circuit according to claim 1, wherein the backlight module comprises:
the first filtering unit is connected with the power output end of the power module and is used for filtering the output voltage;
the boosting unit is connected with the first filtering unit and used for performing voltage conversion on the filtered output voltage;
the current detection unit is connected with the boosting unit and used for detecting the output current of the boosting unit and outputting an overcurrent detection signal;
the voltage detection unit is connected with the boosting unit and used for detecting the output voltage of the boosting unit and outputting an overvoltage detection signal; and
and the backlight chip is respectively connected with the decoding chip, the boosting unit, the current detection unit, the voltage detection unit and the display screen and is used for receiving and receiving at least one of the PWM control signal, the DC control signal, the overcurrent detection signal and the overvoltage detection signal to control and regulate the backlight current output by the boosting unit.
3. The display drive circuit according to claim 2, wherein the boosting unit includes: the device comprises a first inductor, a second inductor, a first voltage-stabilizing tube, a first magnetic bead and a first switch tube;
the first end of the first inductor and the second end of the second inductor are connected in common to serve as the input end of the boosting unit and are connected with the output end of the first filtering unit, the second end of the first inductor, the second end of the second inductor, the first end of the first magnetic bead and the output end of the first switch tube are connected in common, the control end of the first switch tube serves as the control end of the boosting unit and is connected with a switch control signal pin of the backlight chip, the input end of the first switch tube is connected with the current detection unit, the second end of the first magnetic bead is connected with the anode of the first voltage stabilizing tube, and the cathode of the first voltage stabilizing tube serves as the output end of the boosting unit and is connected to the display screen.
4. The display drive circuit according to claim 2, wherein the current detection unit includes: the circuit comprises a first resistor, a second resistor, a third resistor and a fourth resistor;
the first end of the first resistor, the first end of the second resistor, the first end of the third resistor and the first end of the fourth resistor are connected in common to serve as the output end of the current detection unit and are connected with an overcurrent detection pin of the backlight chip, the second end of the second resistor, the second end of the third resistor and the second end of the fourth resistor are connected in common to the ground, and the second end of the first resistor is connected with the control end of the boosting unit.
5. The display driving circuit according to claim 2, wherein the voltage detecting unit includes: the first end of the fifth resistor is used as the input end of the voltage detection unit and is connected with the output end of the boosting unit, the second end of the fifth resistor and the first end of the sixth resistor are connected with the output end of the voltage detection unit in a common mode and are connected with an overvoltage detection pin of the backlight chip, and the second end of the sixth resistor is connected to the ground.
6. The display driving circuit according to claim 2, wherein the backlight module further comprises:
and the second filtering unit is connected between the boosting unit and the display screen and is used for filtering the output voltage of the boosting unit.
7. The display driving circuit according to claim 1, wherein the main control chip is a chip of type HC89F 003.
8. The display driver circuit according to any one of claims 1 to 7, wherein the display driver circuit further comprises:
and the USB interface module is connected with the decoding chip and is used for connecting USB equipment.
9. A television set comprising the display drive circuit according to any one of claims 1 to 8.
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| CN109639161A (en) * | 2019-02-21 | 2019-04-16 | 合肥惠科金扬科技有限公司 | Voltage conversion circuit and display device |
| CN109658878B (en) * | 2019-03-04 | 2024-01-09 | 重庆惠科金扬科技有限公司 | Backlight driving circuit of display panel and display device |
| CN110010088B (en) * | 2019-05-20 | 2022-01-11 | 京东方科技集团股份有限公司 | Transparent display module and transparent display device |
| CN112397034A (en) * | 2020-11-02 | 2021-02-23 | 深圳市创维群欣安防科技股份有限公司 | Dimming control circuit and display device |
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| KR20110133869A (en) * | 2010-06-07 | 2011-12-14 | 엘지전자 주식회사 | Apparatus and method for controlling back light |
| JP2013229560A (en) * | 2012-03-29 | 2013-11-07 | Nec Corp | Led driving device and led driving method |
| CN204031318U (en) * | 2014-08-06 | 2014-12-17 | Tcl集团股份有限公司 | A kind of modularization TV |
| CN105187749B (en) * | 2015-09-25 | 2018-08-31 | 深圳创维－Rgb电子有限公司 | A kind of television backlight Drive And Its Driving Method |
| CN206136115U (en) * | 2016-11-10 | 2017-04-26 | 福建达米拉数码科技有限公司 | Liquid crystal TV with environment lamp |
| CN108377595B (en) * | 2018-03-14 | 2023-10-20 | 合肥惠科金扬科技有限公司 | Multifunctional integrated low-cost backlight circuit and display device |
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