CN108109591A - The control device and notebook panel of display screen - Google Patents
The control device and notebook panel of display screen Download PDFInfo
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- CN108109591A CN108109591A CN201711071347.5A CN201711071347A CN108109591A CN 108109591 A CN108109591 A CN 108109591A CN 201711071347 A CN201711071347 A CN 201711071347A CN 108109591 A CN108109591 A CN 108109591A
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- backlight
- interface
- signal
- display screen
- time schedule
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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
-
- 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
Abstract
The invention discloses the control devices and notebook panel of a kind of display screen.Wherein, which includes：Display screen, for showing electronic data, wherein, display screen is divided into multiple display areas, and each display area uses corresponding backlight source lighting；Backlight driver is connected with the backlight of each display area, for backlight to be driven to shine；Processor is handled electronic data for being based on preset algorithm, obtains at least one backlight control parameter that the corresponding backlight in multiple display areas is controlled to shine；Time schedule controller is connected between processor and backlight driver, for receiving at least one backlight control parameter from processor, and at least one backlight control parameter is transmitted to backlight driver.The present invention solves the prior art and carries out the technical issues of display causes display effect difference and high power consumption using control display screen by the way of global backlight control.
Description
Technical field
The present invention relates to electronic device field, in particular to the control device and notebook panel of a kind of display screen.
Background technology
At present, most of electronic equipment (for example, mobile phone, laptop, computer, TV etc.) uses liquid crystal display
Shield display data, liquid crystal display includes：Display panel and backlight panel, wherein, display panel shows figure in units of pixel
Picture or word, backlight panel are used to use backlight as display panel illumination.I.e. pixel does not shine in itself, display image mainly by
The direct current received is converted to alternating current by backlight panel, and goes using alternating current to light backlight lamp tube, provides backlight, is irradiated
On the display panel for receiving display information, so as to generate image.
By taking laptop as an example, the backlight of the notebook panel on existing market is using global control (Global
Dimming Backlight), the overall brightness of backlight panel can only be controlled, causes narrow dynamic range, the contrast of screen display
It is small, and power consumption is bigger.
Control display screen carries out display and causes display effect by the way of global backlight control for the above-mentioned prior art
The problem of poor and power consumption is high, currently no effective solution has been proposed.
The content of the invention
An embodiment of the present invention provides the control device and notebook panel of a kind of display screen, at least to solve the prior art
The technical issues of display causes display effect difference and high power consumption is carried out using control display screen by the way of global backlight control.
One side according to embodiments of the present invention provides a kind of control device of display screen, including：Display screen is used
In display electronic data, wherein, display screen is divided into multiple display areas, and each display area is shone using corresponding backlight
It is bright；Backlight driver is connected with the backlight of each display area, for backlight to be driven to shine；Processor, it is pre- for being based on
Imputation method handles electronic data, obtains at least one backlight control that the corresponding backlight in multiple display areas is controlled to shine
Parameter processed；Time schedule controller is connected between processor and backlight driver, for receiving at least one back of the body from processor
Photocontrol parameter, and at least one backlight control parameter is transmitted to backlight driver.
Another aspect according to embodiments of the present invention additionally provides a kind of notebook panel, including：Above-mentioned display screen
Control device.
In embodiments of the present invention, integrated in the time schedule controller shown by being used for control display screen in the electronic device
Display screen when showing electronic data by display screen, is divided into multiple display areas, passes through company by region backlight control module
The time schedule controller being connected between processor and backlight driver is received is based on preset algorithm to being treated on display screen from processor
What what the electronic data of display was handled shone for controlling the corresponding backlight in each display area on the display screen
At least one backlight control parameter, and it is transmitted to drive on display screen different display areas corresponding backlight control parameter
The backlight driver that backlight shines drives the different degrees of light and shade of the different corresponding backlight progress in display area on display screen
It adjusts, has reached and region backlight control is carried out by the time schedule controller control display screen for being integrated with region backlight control module
Purpose it is achieved thereby that improving display screen display dynamic range, reducing the technique effect for showing power consumption, and then solves existing skill
Art carries out the technical issues of display causes display effect difference and high power consumption using control display screen by the way of global backlight control.
Description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of control device schematic diagram of display screen according to embodiments of the present invention；
Fig. 2 is a kind of region backlight circuit control optionally with single backlight driver according to embodiments of the present invention
Configuration diagram；
Fig. 3 is the region back of the body that a kind of optional more backlight drivers according to embodiments of the present invention connect in a parallel fashion
Optical circuit controls configuration diagram；And
Fig. 4 is the region back of the body that a kind of optional more backlight drivers according to embodiments of the present invention are connected in serial fashion
Optical circuit controls configuration diagram.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, without being used to describe specific order or precedence.It should be appreciated that it so uses
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, a kind of control device embodiment of display screen is additionally provided, Fig. 1 is real according to the present invention
A kind of control device schematic diagram of display screen of example is applied, as shown in Figure 1, the device includes：Display screen 101, backlight driver
103rd, processor 105 and time schedule controller 107.
Wherein, display screen 101, for showing electronic data, wherein, display screen is divided into multiple display areas, each
Display area uses corresponding backlight source lighting；
Backlight driver 103 is connected with the backlight of each display area, for backlight to be driven to shine；
Processor 105 is handled electronic data for being based on preset algorithm, obtains that multiple display areas is controlled to correspond to
At least one backlight control parameter for shining of backlight；
Time schedule controller 107 is connected between processor 105 and backlight driver 103, for receiving from processor
At least one backlight control parameter, and at least one backlight control parameter is transmitted to backlight driver 103.
As a kind of optional embodiment, above-mentioned display screen 101 can be liquid crystal display 101, and liquid crystal display 101 has
Have that power consumption is small, small, the low advantage of radiation.Above-mentioned backlight for ensuring to send light in 101 behind of liquid crystal display,
Its light source can be incandescent lamp bulb, electrooptic panel (ELP), Light-Emitting Diode (LED), cold-cathode tube (CCFL) etc..It is a kind of optional
Embodiment in, above-mentioned backlight can be LED light string.Each display area corresponds to a backlight, and each backlight includes
One group of LED light drives the backlight of different display areas to shine and to different display areas by backlight driver 103
The light and shade variation of backlight carries out different degrees of adjusting, can realize the region backlight control of liquid crystal display 101.Above-mentioned place
It can be the CPU (central processing unit 105) of electronic equipment or GPU (graphics processor 105) to manage device 105；For to handling electronics
The display information of equipment carries out conversion driving, exports the scanning signal to display screen 101, is correctly shown with control display screen 101.
In the present embodiment, the relevant treatment algorithm that the progress region backlight control of electronic data to be shown will be shown
It is realized in the CPU or GPU of electronic equipment.Above-mentioned time schedule controller 107 can be used to send digiboard in electronic equipment
Control display screen 101 show electronic data coherent signal (include but not limited to rgb signal, clock signal, control signal three
Major class) it is handled, the control signal that display screen 101 can identify is converted into, display screen 101 to be driven to show image.Sequential
Controller 107 is connected between processor 105 and backlight driver 103, for receiving at least one back of the body from processor 105
Photocontrol parameter, and by least one backlight control parameter (for example, for controlling the coefficient of backlight opening time or control
The coefficient of back facet current size) it is transmitted to backlight driver 103 so that it is different aobvious in 103 control display screen 101 of backlight driver
Show that the backlight in region shines or carry out the brightness regulation of distinct program.
It should be noted that the relevant treatment that the above-mentioned progress region backlight control to electronic data to be shown is shown is calculated
Method can be the image data that any one basis receives, and calculate the brightness value for showing image different zones, draw not same district
The backlight control parameter value in domain and the algorithm that compensation data and BORDER PROCESSING etc. are done to the image data of different zones.
Optionally, above-mentioned display screen 101 can be that mobile phone, tablet computer, laptop, computer, TV etc. are arbitrary
The screen of a kind of electronic equipment.
As a kind of optional embodiment, above-mentioned electronic data can be high dynamic range HDR image data.
It should be noted that liquid crystal display does not shine in itself, but figure is generated for screen illumination by backlight
As.Since the backlight of liquid crystal display is complete machine energy consumption the best part, and traditional liquid crystal display is (for example, notebook
Panel) backlight controlled using global, brightness is uniformly adjusted to entire liquid crystal display, i.e., all backlights are drawn in same field
The brightness shown under face is the same, by the same control of system, when next picture brightness is dimmed or during variable, system is again automatically by institute
There is backlight is same to dim or lighten so that either light or full wafer is dimmed by full wafer for liquid crystal display, causes liquid crystal display
Indication range it is narrow and power consumption is bigger.
And in the embodiment of the present application, by the way that region backlight control module is integrated into the time schedule controller of electronic equipment,
Liquid crystal display can be divided into multiple display areas, the brightness of the image then shown according to each display area, automatically
The bright dark of the backlight for the illumination of each display area is controlled, realizes the adjusting to different zones, the variation of different degrees of light and shade,
To meet the image data of high dynamic range, power consumption is greatly reduced, improves the contrast of LCD pictures, increase grayscale
Number reduces ghost, promotes image quality.
From the foregoing, it will be observed that in the above embodiments of the present application, by be used for that control display screen shows in the electronic device when
Integrated region backlight control module in sequence controller when showing electronic data by display screen, display screen is divided into multiple
Display area is received by the time schedule controller 107 being connected between processor 105 and backlight driver 103 from processor
105 are used to control on the display screen each based on preset algorithm to what electronic data to be shown on display screen was handled
At least one backlight control parameter that the corresponding backlight in display area shines, and backlight control parameter is transmitted to drive
The backlight driver that the corresponding backlight in difference display area shines on display screen drives different display areas on display screen to correspond to
Backlight carry out the adjusting of different degrees of light and shade, reached the time schedule controller control by being integrated with region backlight control module
Display screen processed carries out the purpose of region backlight control, it is achieved thereby that improving display screen display dynamic range, reducing display power consumption
Technique effect, and then solve prior art control display screen by the way of global backlight control and carry out display and cause to show
The technical issues of effect difference and high power consumption.
By taking " notebook panel " as an example, since laptop has the function of for HDR (high dynamic range), thus, it is right
Notebook panel carries out region backlight control, is essential.It, can based on the control device of display screen disclosed in the present embodiment
With the control of the integrated region backlight control (RegionalBacklight) in the time schedule controller of notebook panel (TCON)
Device.
Easily it is noted that can be one or multiple for driving the backlight driver of backlight；Wherein,
In the case where backlight driver is multiple, multiple backlight drivers can be arranged to serial structure, can also be arranged to parallel
As a result.Two kinds of structures can all realize multizone backlight (1N/2N/4N (N>=4) effect) individually controlled, wherein, N refers to X
The backlight area of multiple independent controls on direction of principal axis.Such as 4N refers to 4 row's backlights, often row has the region of N number of independent control,
In the case of N=8,32 backlight areas can pass through the backlight driver (LD of 2 output of 16 passages concurrently or sequentially
BL Driver) carry out independent control.
In the first optional embodiment, Fig. 2 is that one kind according to embodiments of the present invention optionally has single backlight
The region backlight circuit control configuration diagram of driver, as shown in Fig. 2, being integrated with the timing control of region backlight control module
Device is connected to GPU (or CPU) between backlight driver, will be on the carry out region backlight control to electronic data to be shown
Show all algorithms of (for example, HDR functions) all in the inner sequential realized, be integrated with region backlight control module of GPU (or CPU)
Controller (TCON) receives GPU (or CPU) processed region backlighting parameters, by simply handling, passes through SPI serial peripherals
Interface and/or I2C bus interface (i.e. two-way binary synchronous serial bus interface) send the backlight driver of display screen to
(Local Dimming Backlight Driver, abbreviation LD BL Driver).Backlight driver receives region backlight control
Corresponding LED light string is driven to shine after parameter processed.
As shown in Fig. 2, after region backlight control module is integrated into time schedule controller, GPU (or CPU) and time schedule controller
Between transmission line channel include at least HDP, eDP main link and Aux Channel, wherein, eDPmain link tables
Show eDP interfaces (a kind of internal digital interface based on DisplayPort frameworks and agreement, suitable for tablet computer, notebook,
All-in-one machine, following new large screen high-resolution mobile phone) signal main channel, for transmitting all types of video datas and audio number
According to；Aux Channel represent audio auxiliary channels, are used for transmission the data of low bandwidth needs and link management and equipment control
Signal processed etc.；HDP represents hot plug sense channel.
In second of optional embodiment, Fig. 3 is a kind of optional more backlight drives according to embodiments of the present invention
The region backlight circuit control configuration diagram that device connects in a parallel fashion, as shown in figure 3, in multiple backlight drivers using simultaneously
In the case that capable mode is connected with time schedule controller, the output interface of time schedule controller is including at least one following：Frame synchronization
Signaling interface, for exporting frame synchronizing signal, wherein, frame synchronizing signal is used for the output of synchronous backlight driver；The synchronous letter of row
Number interface, for exporting line synchronising signal, wherein, line synchronising signal is used to control the reference clock and/or just of backlight driver
Beginning brightness；Enable signal interface, for exporting enable signal；Chip selection signal interface, for exporting chip selection signal；Serial data connects
Mouthful, it is used for transmission serial data；Synchronizing clock signals interface, for exporting synchronizing clock signals；Modulated luminance signal interface is used
The modulated signal of the brightness of multiple backlights is controlled in output；Wherein, each output interface of time schedule controller and multiple backlights
Each backlight driver connects respectively in driver.
In the third optional embodiment, Fig. 4 is a kind of optional more backlight drives according to embodiments of the present invention
The region backlight circuit control configuration diagram that device is connected in serial fashion, as shown in figure 4, in multiple backlight drivers using string
In the case that capable mode is connected with time schedule controller, the output interface of time schedule controller is including at least one following：Frame synchronization
Signaling interface, for exporting frame synchronizing signal, wherein, frame synchronizing signal is used for the output of synchronous backlight driver；The synchronous letter of row
Number interface, for exporting line synchronising signal, wherein, line synchronising signal is used to control the reference clock and/or just of backlight driver
Beginning brightness；Enable signal interface, for exporting enable signal；Serial data interface is used for transmission serial data；Synchronised clock is believed
Number interface, for exporting synchronizing clock signals；Wherein, the first backlight driver and time schedule controller in multiple backlight drivers
Each output interface connection, its backlight driver in multiple backlight drivers in addition to the first backlight driver respectively with sequential control
Frame synchronizing signal interface, line synchronising signal interface, the enable signal interface of device processed connect, and pass through string between multiple backlight drivers
Row data-interface is connected with synchronizing clock signals interface.
It is easily noted that, in the case where backlight driver is multiple, compared with using parallel mode connection structure,
The structure connected using serial mode, connection can be simpler.
Based on any one above-mentioned optional embodiment, as a kind of optional embodiment, above-mentioned time schedule controller
Input interface include it is at least one following：Serial data interface, for receiving the serial data from processor；Intensification modulation
Signaling interface, for receiving the modulated luminance signal from processor.As a preferred embodiment, when table 1 is shown
The input and output pin explanation of sequence controller.
Table 1
Embodiment 2
According to embodiments of the present invention, additionally provide a kind of notebook panel, including any one in embodiment 1 it is optional or
The control device of preferred display screen.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasize particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode in actual implementation, for example, multiple units or component can combine or
Person is desirably integrated into another system or some features can be ignored or does not perform.Another, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment the method for the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of control device of display screen, which is characterized in that including：
Display screen, for showing electronic data, wherein, the display screen is divided into multiple display areas, each display area
Using corresponding backlight source lighting；
Backlight driver is connected with the backlight of each display area, for the backlight to be driven to shine；
Processor is handled the electronic data for being based on preset algorithm, obtains controlling the multiple display area pair
At least one backlight control parameter that the backlight answered shines；
Time schedule controller is connected between the processor and the backlight driver, for receiving from the processor
At least one backlight control parameter, and at least one backlight control parameter is transmitted to the backlight driver.
2. the apparatus according to claim 1, which is characterized in that the time schedule controller will by any one following interface
At least one backlight control parameter is transmitted to the backlight driver：SPI Serial Peripheral Interface (SPI)s, I2C bus interface.
3. the apparatus according to claim 1, which is characterized in that the input interface of the time schedule controller is included as follows at least
One of：
Serial data interface, for receiving the serial data from the processor；
Modulated luminance signal interface, for receiving the modulated luminance signal from the processor.
4. the apparatus according to claim 1, which is characterized in that the quantity of the backlight driver is one or more,
In, in the case where the quantity of the backlight driver is multiple, the multiple backlight driver uses the side of serial or parallel
Formula is connected with the time schedule controller.
5. device according to claim 4, which is characterized in that the multiple backlight driver using parallel form with
In the case of the time schedule controller connection, the output interface of the time schedule controller is including at least one following：
Frame synchronizing signal interface, for exporting frame synchronizing signal, wherein, the frame synchronizing signal is for the synchronous backlight drive
The output of device；
Line synchronising signal interface, for exporting line synchronising signal, wherein, the line synchronising signal is used to control the backlight drive
The reference clock and/or original intensity of device；
Enable signal interface, for exporting enable signal；
Chip selection signal interface, for exporting chip selection signal；
Serial data interface is used for transmission serial data；
Synchronizing clock signals interface, for exporting synchronizing clock signals；
Modulated luminance signal interface, for exporting the modulated signal for the brightness for controlling multiple backlights；
Wherein, each output interface of the time schedule controller is distinguished with each backlight driver in the multiple backlight driver
Connection.
6. device according to claim 4, which is characterized in that the multiple backlight driver using serial manner with
In the case of the time schedule controller connection, the output interface of the time schedule controller is including at least one following：
Frame synchronizing signal interface, for exporting frame synchronizing signal, wherein, the frame synchronizing signal is for the synchronous backlight drive
The output of device；
Line synchronising signal interface, for exporting line synchronising signal, wherein, the line synchronising signal is used to control the backlight drive
The reference clock and/or original intensity of device；
Enable signal interface, for exporting enable signal；
Serial data interface is used for transmission serial data；
Synchronizing clock signals interface, for exporting synchronizing clock signals；
Wherein, each output interface of the first backlight driver and the time schedule controller connects in the multiple backlight driver
Connect, its backlight driver in the multiple backlight driver in addition to the first backlight driver respectively with the time schedule controller
The frame synchronizing signal interface, the line synchronising signal interface, enable signal interface connection, the multiple backlight driver
Between connected by the serial data interface with the synchronizing clock signals interface.
7. device as claimed in any of claims 1 to 6, which is characterized in that the backlight is LED light string.
8. device as claimed in any of claims 1 to 6, which is characterized in that the processor is central processing unit
CPU and/or graphics processor GPU.
9. device as claimed in any of claims 1 to 6, which is characterized in that the electronic data is high dynamic range
Enclose HDR image data.
10. a kind of notebook panel includes the control device of the display screen described in any one in claim 1 to 9.
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| 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 |
| CN110599894A (en) * | 2019-09-18 | 2019-12-20 | 重庆京东方智慧电子系统有限公司 | Electronic tag and driving method thereof |
| CN111326120A (en) * | 2020-04-08 | 2020-06-23 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
| CN111489709A (en) * | 2020-06-02 | 2020-08-04 | 上海九山电子科技有限公司 | Backlight source driving circuit, backlight module and liquid crystal display device |
| CN112927655A (en) * | 2019-12-06 | 2021-06-08 | 新唐科技股份有限公司 | Backlight device and driving method |
| CN112929588A (en) * | 2019-12-06 | 2021-06-08 | 海信视像科技股份有限公司 | Display apparatus and image data processing method |
| CN112992081A (en) * | 2021-03-08 | 2021-06-18 | 京东方科技集团股份有限公司 | Backlight plate, display panel and control method of backlight plate |
| US11397447B2 (en) | 2019-09-18 | 2022-07-26 | Chongqing Boe Smart Electronics System Co., Ltd. | Electronic label and method for driving the same |
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| CN112929588B (en) * | 2019-12-06 | 2023-08-15 | 海信视像科技股份有限公司 | Display device and image data processing method |
| CN111326120B (en) * | 2020-04-08 | 2021-08-24 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
| CN111326120A (en) * | 2020-04-08 | 2020-06-23 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
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