CN111326120B - Local backlight dimming circuit and dimming method and liquid crystal display device - Google Patents
Local backlight dimming circuit and dimming method and liquid crystal display device Download PDFInfo
- Publication number
- CN111326120B CN111326120B CN202010270457.XA CN202010270457A CN111326120B CN 111326120 B CN111326120 B CN 111326120B CN 202010270457 A CN202010270457 A CN 202010270457A CN 111326120 B CN111326120 B CN 111326120B
- Authority
- CN
- China
- Prior art keywords
- backlight
- led driving
- led
- data
- regional
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- 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
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present disclosure provides a local backlight dimming circuit and a dimming method and a liquid crystal display device. The regional backlight dimming circuit comprises a time sequence control board, a backlight driving board and a regional LED light source. The timing control board is provided with a timing controller. The backlight driving board is provided with an LED driving module, and the LED driving module comprises a plurality of LED driving chips, an input end and an output end. The time schedule controller is connected with the input end of the LED driving module through the SPI bus and used for distributing backlight driving data to corresponding LED driving chips. The regional LED light sources are connected with the output end of the LED driving module, and the LED driving chip controls the corresponding regional LED light sources to emit light. The existing regional backlight dimming circuit is simplified, and the production cost is saved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a local backlight dimming circuit and a local backlight dimming method, and a liquid crystal display device.
Background
With the development of the liquid crystal display technology and the appearance of the Local Dimming (Local Dimming) technology, the contrast index of the liquid crystal display is greatly improved, the quality of reproduced images of the liquid crystal display is greatly improved, and the power consumption of backlight is greatly reduced. The local dimming system mainly includes three parts, i.e., a TCON (Timing Controller) board, an MCU (Micro Controller Unit), and a Light Emitting Diode (LED) driving module 800, as shown in fig. 1. The LED driving module 800 includes a plurality of LED driving chips. The TCON performs partition sampling and brightness statistics on the input full-screen image, and sends backlight driving data to the MCU in real time through a Serial Peripheral Interface (SPI) 1 bus. The MCU further performs addressing and positioning to the LED driving chip where the partition is located through the SPI 2, and turns on a specific output channel of the LED driving chip in a Pulse Width Modulation (PWM) manner to control the backlight source 900. The backlight source and the image picture in the area can be displayed simultaneously, the power consumption of the backlight can be greatly reduced, and the contrast of the display picture is improved. However, the current local dimming technical scheme has the problem that the TCON and the MCU simultaneously transmit local backlight dimming data, and all use the SPI bus, the circuit of the control system is complex, and the production cost is high.
Therefore, the problems of the existing area backlight dimming circuit are complex and high in production cost need to be solved.
Disclosure of Invention
The present disclosure provides a local backlight dimming circuit, a dimming method and a liquid crystal display device, so as to alleviate the technical problems of the existing local backlight dimming circuit, such as complexity and high production cost.
In order to solve the above problems, the technical solution provided by the present disclosure is as follows:
the embodiment of the disclosure provides a local backlight dimming circuit, which comprises a time sequence control board, a backlight driving board and a local LED light source. The timing control board is provided with a timing controller. The LED driving module is arranged on the backlight driving board and comprises a plurality of LED driving chips, an input end and an output end, and the time schedule controller is connected with the input end. The area LED light source is connected with the output end. The time sequence controller is used for providing backlight driving data for the LED driving module, the LED driving module is used for controlling the regional LED light source to work, the backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, and each data section takes the device address of the LED driving chip as the beginning.
In the local backlight dimming circuit provided by the embodiment of the disclosure, the timing controller is connected to the input terminal through an SPI bus.
In the local backlight dimming circuit provided by the embodiment of the present disclosure, the SPI bus includes a chip selection signal line and an output data line, the chip selection signal line is used for providing an enable signal for the LED driving module, and the output data line is used for transmitting the backlight driving data to the LED driving module.
In the local backlight dimming circuit provided by the embodiment of the disclosure, the plurality of LED driving chips are used for controlling different local LED light sources.
The embodiment of the disclosure provides a liquid crystal display device, which includes the local backlight dimming circuit and the liquid crystal display panel in one of the foregoing embodiments.
The embodiment of the disclosure further provides a local backlight dimming method of the backlight module, wherein the backlight module comprises a local backlight dimming circuit, and the local backlight dimming circuit comprises a time sequence control board, a backlight driving board and a local LED light source. The time sequence control board is provided with a time sequence controller, the backlight driving board is provided with an LED driving module, the LED driving module comprises an input end and an output end, the time sequence controller is connected with the input end, the regional LED light source is connected with the output end, and the regional backlight dimming method comprises the following steps: the timing controller provides backlight driving data to the LED driving module. And the LED driving module controls the regional LED light source to emit light. The LED driving module comprises a plurality of LED driving chips, the backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, and each data section takes the device address of the LED driving chip as the beginning.
In the local backlight dimming method of the backlight module provided by the embodiment of the disclosure, the timing controller is connected with the input end through an SPI bus.
In the local backlight dimming method of the backlight module provided by the embodiment of the disclosure, the SPI bus includes a chip selection signal line and an output data line, the chip selection signal line is used for providing an enable signal for the LED driving module, and the output data line is used for transmitting the backlight driving data to the LED driving module.
In the local backlight dimming method of the backlight module provided by the embodiment of the disclosure, the plurality of LED driving chips are used for controlling different local LED light sources.
In the regional backlight dimming method of the backlight module provided by the embodiment of the disclosure, the timing controller performs addressing and positioning through the SPI bus to distribute different backlight driving data to the corresponding LED driving chips, and the LED driving chips control the corresponding regional LED light sources to emit light.
The beneficial effects of this revelation do: in the local backlight dimming circuit, the dimming method and the liquid crystal display device, the time schedule controller is directly connected with the LED driving module through the SPI bus to provide backlight driving data for the LED driving chip in the LED driving module. The function of the MCU in the prior art is realized by changing the software design of the time schedule controller and configuring the corresponding SPI bus. Therefore, MCU is saved, an SPI bus is reduced, the existing regional backlight dimming circuit is simplified, and the production cost is saved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a local dimming design architecture in the prior art;
fig. 2 is a schematic diagram of a local backlight dimming circuit according to an embodiment of the disclosure;
fig. 3 is a timing diagram of a local backlight dimming circuit according to an embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating a local backlight dimming circuit according to an embodiment of the disclosure for distributing data.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the disclosure may be practiced. Directional phrases used in this disclosure, such as [ upper ], [ lower ], [ front ], [ back ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terms used are used for the purpose of illustration and understanding of the present disclosure, and are not used to limit the present disclosure. In the drawings, elements having similar structures are denoted by the same reference numerals.
In one embodiment, as shown in fig. 2, a local backlight dimming circuit 100 is provided, which includes a timing control board 10, a backlight driving board 20 and a local LED light source 30. The timing control board 10 is provided with a timing controller 11. The backlight driving board 20 is provided with an LED driving module 21, the LED driving module 21 includes a plurality of LED driving chips 211 (fig. 1 exemplarily shows 4 LED driving chips 211), an input end and an output end, and the timing controller 11 is connected to the input end. The area LED light sources 30 are connected to the output terminals. The timing controller 11 is configured to provide backlight driving data to the LED driving module 21, and the LED driving module 21 is configured to control the regional LED light sources 30 to work. The backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, and each data section takes the device address of the LED driving chip as the beginning.
Specifically, the timing controller 11 is connected to the input end of the LED driving module 21 through an SPI bus. The SPI bus includes a chip select signal line CS for providing an enable signal to the LED driving module 21 and an output data line MOSI for transmitting the backlight driving data to the LED driving module 21.
Specifically, the LED driving module 21 includes a plurality of LED driving chips 211, and the plurality of LED driving chips 211 are used for controlling the LED light sources 30 in different areas.
Further, each LED driving chip 211 on the LED driving module 21 includes a plurality of output channels, and each output channel can output different control levels to control different area LED light sources 30. Each area LED light source 30 includes at least one LED light source.
Further, the LED driving module 21 includes n LED driving chips, each of which can output m control levels, and the total number of partitions of the local backlight dimming is n times m. Wherein m and n are both positive integers greater than 1.
Specifically, the time schedule controller repeats the operation for n times within 1 frame of scanning time, pulls down the pin level of the chip selection signal line CS of the SPI bus, and selects the corresponding LED driving chip. The backlight driving data of a specific partition is distributed to the LED driving chips by different device addresses. The backlight driving data of the specific subarea is the data segment corresponding to the LED driving chip. And then, the pin level of a chip selection signal line CS of the SPI bus is pulled up, the LED driving chip is quitted from being enabled, and next frame data is waited for updating.
Specifically, as shown in fig. 3, during 1 frame scanning time, the chip select signal line CS (i.e., SPI-CS in fig. 3) of the SPI bus pulls down the pin level, selects the first LED driving chip IC1, and distributes the backlight driving data to the first LED driving chip. And then sequentially distributes the backlight driving data to the second LED driving chips IC2, IC3, IC4, IC5, IC6, up to ICn. The dashed arrows in fig. 3 indicate the omitted LED driving chips.
Specifically, the backlight driving data includes a plurality of data segments corresponding to the LED driving chips. After the first LED driver IC1 is selected, the data segment corresponding to the first LED driver IC is distributed to the first LED driver IC. And distributing all the data segments to the corresponding LED driving chips within one frame scanning time.
Specifically, the data segment distributed to the LED driving chip by the time sequence controller is transmitted to the LED driving chip through an output data line MOSI of the SPI bus.
Specifically, as shown in fig. 4, the distribution of backlight driving data to the first LED driving chip IC1 and the second LED driving chip IC2 is taken as an example for explanation. When the backlight driving data is distributed to the first LED driving chip IC1, the device address corresponding to the first LED driving chip IC1 is determined by addressing. The backlight driving data of the 1 st division of the area backlight dimming (i.e., BL 1 st division data in fig. 4) and the backlight driving data of the m-th division (i.e., BL m-th division data in fig. 4) are then sequentially transmitted to the first LED driving chip IC1 through the output data line MOSI (i.e., SPI-MOSI in fig. 4) of the SPI bus.
Further, when distributing the backlight driving data to the second LED driving chip IC2, the device address corresponding to the second LED driving chip IC2 is determined by addressing. Then, the backlight driving data of the m +1 th sub-area for local backlight dimming (i.e., BL m +1 th sub-area data in fig. 4) and the backlight driving data of the up to 2m th sub-area (i.e., BL 2m th sub-area data in fig. 4) are sequentially transmitted to the second LED driving chip IC2 through the output data line MOSI of the SPI bus. Note that, the dotted line frame in fig. 4 indicates the omitted area backlight partition data.
Further, by analogy, when distributing backlight driving data to the nth LED driving chip, the device address corresponding to the nth LED driving chip is determined by addressing. And then sequentially transmitting the backlight driving data of the (n-1) th m +1 th partition of the regional backlight dimming, the backlight driving data of the (n-1) th m +2 th partition through an output data line of the SPI bus until the backlight driving data of the nth by m partition (not shown in fig. 4) is transmitted to the nth LED driving chip.
Further, as shown in fig. 4, when distributing the backlight driving data to the first LED driving chip IC1, the pin level of the chip select signal line CS (i.e. SPI-CS in fig. 4) of the SPI bus is pulled down, the device address corresponding to the first LED driving chip IC1 is selected, and then the data segment (including the backlight partition data of each region) corresponding to the first LED driving chip IC1 is transmitted to the first LED driving chip IC1 through the output data line MOSI of the SPI bus. The data segment corresponding to the first LED driver IC1 begins with the device address of the first LED driver IC. After the distribution of the backlight driving data to the first LED driving chip IC1 is completed, the pin level of the chip select signal line CS of the SPI bus is pulled high to exit the enabling of the first LED driving chip IC 1. When distributing the backlight driving data to the second LED driving chip IC2, the pin level of the chip select signal line CS of the SPI bus is also pulled down first, and after the distribution of the backlight driving data to the second LED driving chip IC2 is completed, the pin level of the chip select signal line CS of the SPI bus is pulled up to exit the enabling of the second LED driving chip IC 2. By analogy, the time schedule controller repeats n times in 1 frame of scanning time to complete data transmission of the n LED driving chips.
In this embodiment, the timing controller is directly connected to the LED driving module through the SPI bus, and provides backlight driving data to the LED driving chip in the LED driving module. The function of the MCU in the prior art is realized by changing the software design of the time schedule controller and configuring the corresponding SPI bus. Therefore, MCU is saved, an SPI bus is reduced, the existing regional backlight dimming circuit is simplified, and the production cost is saved.
In one embodiment, a liquid crystal display device is provided, which includes the local backlight dimming circuit and the liquid crystal display panel of the foregoing embodiments. The regional backlight dimming circuit is arranged on the backlight module, and the backlight module provides backlight for the liquid crystal display panel.
In one embodiment, a local backlight dimming method of a backlight module is provided, the backlight module comprises a local backlight dimming circuit, and the local backlight dimming circuit comprises a timing control board, a backlight driving board and a local LED light source. The time sequence control board is provided with a time sequence controller, the backlight driving board is provided with an LED driving module, the LED driving module comprises an input end and an output end, the time sequence controller is connected with the input end, the regional LED light source is connected with the output end, and the regional backlight dimming method comprises the following steps:
the time schedule controller provides backlight driving data for the LED driving module;
the LED driving module controls the regional LED light source to emit light;
the LED driving module comprises a plurality of LED driving chips, the backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, and each data section takes the device address of the LED driving chip as the beginning.
Specifically, the timing controller is connected to the input terminal through an SPI bus. The SPI bus comprises a chip selection signal line and an output data line, the chip selection signal line is used for providing an enabling signal for the LED driving module, and the output data line is used for transmitting the backlight driving data to the LED driving module.
Further, the LED driving module includes a plurality of LED driving chips, and the plurality of LED driving chips are used for controlling different area LED light sources.
Furthermore, the time schedule controller carries out addressing and positioning through an SPI bus to distribute different backlight driving data to the corresponding LED driving chips, and the LED driving chips control the corresponding regional LED light sources to emit light. For the specific rule of the regional backlight dimming partition principle of the backlight module and the rule of the time sequence controller for distributing the backlight driving data to the LED driving chip, please refer to the description of the above embodiments, which is not repeated herein.
According to the above embodiments:
the disclosure provides a local backlight dimming circuit, a dimming method and a liquid crystal display device. The timing control board is provided with a timing controller. The backlight driving board is provided with an LED driving module, and the LED driving module comprises a plurality of LED driving chips, an input end and an output end. The time schedule controller is connected with the input end of the LED driving module through the SPI bus and used for distributing backlight driving data to corresponding LED driving chips. The regional LED light sources are connected with the output end of the LED driving module, and the LED driving chips control the corresponding regional LED light sources to emit light. The function of the MCU in the prior art is realized by changing the software design of the time schedule controller and configuring the corresponding SPI bus. Therefore, MCU is saved, an SPI bus is reduced, the existing regional backlight dimming circuit is simplified, and the production cost is saved.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, so that the scope of the present disclosure is defined by the appended claims.
Claims (8)
1. An area backlight dimming circuit, comprising:
the time sequence control board is provided with a time sequence controller;
the LED driving module comprises a plurality of LED driving chips, an input end and an output end, and the time schedule controller is connected with the input end through an SPI bus; and
the regional LED light source is connected with the output end;
the time schedule controller is used for providing backlight driving data for the LED driving module, the LED driving module is used for controlling the regional LED light source to work, the backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, each data section takes the device address of the LED driving chip as the beginning, the time schedule controller is also used for pulling down the pin level of a chip selection signal line of the SPI bus, selecting the corresponding LED driving chip and distributing the backlight driving data of a specific partition to the LED driving chips through different device addresses.
2. The local backlight dimming circuit of claim 1, wherein the SPI bus comprises a chip select signal line for providing an enable signal to the LED driving module and an output data line for transmitting the backlight driving data to the LED driving module.
3. The local backlight dimming circuit of claim 1, wherein the plurality of LED driving chips are configured to control different local LED light sources.
4. A liquid crystal display device comprising the local backlight dimming circuit according to any one of claims 1 to 3 and a liquid crystal display panel.
5. A regional backlight dimming method of a backlight module is characterized in that the backlight module comprises a regional backlight dimming circuit, and the regional backlight dimming circuit comprises a time sequence control board, a backlight driving board and a regional LED light source; the time sequence control board is provided with a time sequence controller, the backlight driving board is provided with an LED driving module, the LED driving module comprises a plurality of LED driving chips, an input end and an output end, the time sequence controller is connected with the input end through an SPI bus, the regional LED light source is connected with the output end, and the regional backlight dimming method comprises the following steps:
the time schedule controller provides backlight driving data for the LED driving module, and the backlight driving data comprises pin levels of chip selection signal lines of the SPI bus pulled down by the time schedule controller, corresponding LED driving chips are selected, and backlight driving data of specific partitions are distributed to the LED driving chips through different device addresses; and
the LED driving module controls the regional LED light source to emit light;
the backlight driving data comprises a plurality of data sections corresponding to the LED driving chips, and each data section takes the device address of the LED driving chip as the beginning.
6. The local backlight dimming method of a backlight module as claimed in claim 5, wherein the SPI bus comprises a chip selection signal line and an output data line, the chip selection signal line is used for providing an enabling signal for the LED driving module, and the output data line is used for transmitting the backlight driving data to the LED driving module.
7. The local backlight dimming method of claim 6, wherein the plurality of LED driving chips are used for controlling different local LED light sources.
8. The local backlight dimming method of claim 7, wherein the timing controller performs addressing and positioning through the SPI bus to distribute different backlight driving data to the corresponding LED driving chips, and the LED driving chips control the corresponding local LED light sources to emit light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010270457.XA CN111326120B (en) | 2020-04-08 | 2020-04-08 | Local backlight dimming circuit and dimming method and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010270457.XA CN111326120B (en) | 2020-04-08 | 2020-04-08 | Local backlight dimming circuit and dimming method and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111326120A CN111326120A (en) | 2020-06-23 |
| CN111326120B true CN111326120B (en) | 2021-08-24 |
Family
ID=71168019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010270457.XA Active CN111326120B (en) | 2020-04-08 | 2020-04-08 | Local backlight dimming circuit and dimming method and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111326120B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111818699B (en) * | 2020-07-21 | 2022-12-06 | 上海有个机器人有限公司 | Control method and control circuit of RGB-LED light source |
| CN113516953B (en) * | 2021-06-23 | 2022-05-10 | 惠科股份有限公司 | Driving method of backlight module and display device |
| CN113450727B (en) * | 2021-06-25 | 2022-11-11 | 京东方科技集团股份有限公司 | Driving circuit and driving method of display device |
| CN113870804B (en) * | 2021-10-18 | 2022-05-03 | 北京显芯科技有限公司 | Backlight control system, method, device and storage medium |
| US20240249691A1 (en) * | 2022-06-09 | 2024-07-25 | BOE MLED Technology Co., Ltd. | Apparatus and driving method, backlight driving unit, microchip, and data transmission method |
| CN219916686U (en) * | 2023-03-21 | 2023-10-27 | 海信视像科技股份有限公司 | Driving circuit and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007240969A (en) * | 2006-03-09 | 2007-09-20 | Epson Imaging Devices Corp | Electrooptical device and electronic equipment |
| CN102376279A (en) * | 2010-08-12 | 2012-03-14 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN105609068A (en) * | 2016-01-04 | 2016-05-25 | 京东方科技集团股份有限公司 | Time schedule controller, source drive IC, and source driving method |
| CN108109591A (en) * | 2017-11-03 | 2018-06-01 | 硅谷数模半导体（北京）有限公司 | The control device and notebook panel of display screen |
| CN109272943A (en) * | 2018-10-15 | 2019-01-25 | 昆山龙腾光电有限公司 | A kind of backlight control system of display device |
| CN110223620A (en) * | 2018-03-01 | 2019-09-10 | 京东方科技集团股份有限公司 | Drive control method, component and display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274850B (en) * | 2017-08-11 | 2019-06-07 | 京东方科技集团股份有限公司 | A kind of display driver circuit and its driving method, display device |
| KR102444156B1 (en) * | 2017-09-22 | 2022-09-16 | 삼성디스플레이 주식회사 | Display device and mehthod for driving the same |
| CN109119040A (en) * | 2018-09-18 | 2019-01-01 | 惠科股份有限公司 | Display device, driving configuration method of display device and display |
| CN110111745A (en) * | 2019-04-12 | 2019-08-09 | 深圳市华星光电技术有限公司 | A kind of display panel and its driving method |
-
2020
- 2020-04-08 CN CN202010270457.XA patent/CN111326120B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007240969A (en) * | 2006-03-09 | 2007-09-20 | Epson Imaging Devices Corp | Electrooptical device and electronic equipment |
| CN102376279A (en) * | 2010-08-12 | 2012-03-14 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN105609068A (en) * | 2016-01-04 | 2016-05-25 | 京东方科技集团股份有限公司 | Time schedule controller, source drive IC, and source driving method |
| CN108109591A (en) * | 2017-11-03 | 2018-06-01 | 硅谷数模半导体（北京）有限公司 | The control device and notebook panel of display screen |
| CN110223620A (en) * | 2018-03-01 | 2019-09-10 | 京东方科技集团股份有限公司 | Drive control method, component and display device |
| CN109272943A (en) * | 2018-10-15 | 2019-01-25 | 昆山龙腾光电有限公司 | A kind of backlight control system of display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111326120A (en) | 2020-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111326120B (en) | Local backlight dimming circuit and dimming method and liquid crystal display device | |
| CN101907981B (en) | Data processing equipment and display method thereof | |
| US11341926B2 (en) | Backlight module, control method therefor and display device, driving method therefor | |
| CN109215587B (en) | Display device, driving method and electronic equipment | |
| US8902148B2 (en) | Backlight driver receiving serially provided optical data via a serial bus and liquid crystal display including the same | |
| US10935841B2 (en) | Backlight module, display device and driving method thereof | |
| CN110827768A (en) | Backlight device and display device having the same | |
| CN109036298B (en) | Backlight driving method and device and display equipment | |
| CN111768740B (en) | Display panel, driving method thereof and display device | |
| CN115273762B (en) | Driving system, display system and display device | |
| JP2002202758A (en) | Display device | |
| KR101352473B1 (en) | Driving system for backlight unit, liquid crystal display device including the same and method of driving the same | |
| CN113053261A (en) | Splicing display device and splicing display method | |
| CN110462849A (en) | The device and method of the distribution control of semiconductor devices array | |
| CN114333714A (en) | Backlight module, dimming method thereof and display device | |
| US20220415248A1 (en) | Driving method of display device, display device, and computer readable storage medium | |
| CN105551444A (en) | Display device | |
| US20210304655A1 (en) | Display panel and display device | |
| US20240231152A1 (en) | Backlight module and display device | |
| KR20200058623A (en) | Display device and method of driving the same | |
| CN212694810U (en) | High-partition regional light control television | |
| CN117456939A (en) | Control method and apparatus for backlight unit | |
| CN105679268A (en) | Display assembly | |
| KR101511127B1 (en) | Method of driving a light source, device for driving a light source and display device having the same | |
| US20080079677A1 (en) | Method for driving display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |