CN113053329A - Backlight control system - Google Patents
Backlight control system Download PDFInfo
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- CN113053329A CN113053329A CN202110325874.4A CN202110325874A CN113053329A CN 113053329 A CN113053329 A CN 113053329A CN 202110325874 A CN202110325874 A CN 202110325874A CN 113053329 A CN113053329 A CN 113053329A
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- backlight
- control chip
- conversion processing
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- main control
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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
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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
Abstract
The embodiment of the invention discloses a backlight control system. A backlight control system comprising: the backlight control system comprises a main control chip, a backlight control chip, a Mini-LED backlight module and a display panel; the main control chip acquires video stream data from an external interface or a local storage device; the backlight control chip receives and caches each frame of video image in the video stream data, analyzes each frame of video image and then generates a backlight partition control signal, and forwards each frame of video image to the display panel and simultaneously sends the backlight partition control signal to the Mini-LED backlight module. The problems that the energy consumption of the main control chip is high, the requirement on the main control chip is high and the applicability is poor when the main control chip is crossed due to the fact that the image analysis of the current local dimming method is completed by the main control chip and the backlight adjustment is carried out through an external backlight processing unit are solved, and the effects of improving the image display contrast, reducing the power consumption of the main control and being high in applicability are achieved.
Description
Technical Field
The embodiment of the invention relates to a liquid crystal display technology, in particular to a backlight control system.
Background
Conventional liquid crystal displays, while operating to provide good resolution and image definition, rely on an LED backlight that is output at a constant power, which is constantly bright and uniformly illuminated, and are therefore still inadequate in rendering dark black tones and high contrast images.
At present, the Mini-LED backlight of a television display screen is divided into different areas by a local dimming method and each area is controlled respectively, and the performance of the display screen is improved by local dimming, so that the dark part of an image becomes darker and the contrast becomes larger.
However, the image analysis of the local dimming method is completed by a main control chip of the television, and then the backlight adjustment is performed by an external backlight processing unit; the image analysis function causes higher energy consumption of the main control chip, higher requirements on the main control chip, and needs to develop different main control chips when cross-platform use is met, so that the universality is lower, and the popularization and the use are difficult.
Disclosure of Invention
The invention provides a backlight control system, which aims to achieve the effects of improving the image display contrast, reducing the power consumption of main control and having strong applicability.
An embodiment of the present invention provides a backlight control system, including: the backlight control system comprises a main control chip, a backlight control chip, a Mini-LED backlight module and a display panel;
the main control chip acquires video stream data from an external interface or a local storage device;
the backlight control chip receives and caches each frame of video image in the video stream data, analyzes each frame of video image and then generates a backlight partition control signal, and forwards each frame of video image to the display panel and simultaneously sends the backlight partition control signal to the Mini-LED backlight module.
Optionally, the backlight control chip includes a conversion processing module and a plurality of signal input interfaces, and the signal input interfaces are connected to the main control chip and the conversion processing module; the signal input interface receives video stream data transmitted by the main control chip, and the conversion processing module initializes the signal input interface according to the type of the signal input interface corresponding to the video stream data judged by the main control chip.
Optionally, the backlight control chip further includes a storage module, the conversion processing module is connected to the signal input interface and the storage module, and the conversion processing module unpacks the video stream data into each frame of video image according to a protocol corresponding to the signal input interface of the video stream data input, and stores the video image into the storage module.
Optionally, the conversion processing module reads each frame of video image in the storage module, performs partition processing and obtains a brightness value of each pixel point of each partition, and calculates a backlight brightness value of a corresponding region according to the brightness value of each pixel to generate a corresponding backlight partition control signal.
Optionally, the conversion processing module calculates a luminance value of each pixel to be mapped to a backlight luminance value of a corresponding region according to a Local Dimming algorithm.
Optionally, the backlight control chip further includes a signal output interface, the signal output interface provides backlight for the display panel, the signal output interface outputs each frame of video image processed by the conversion processing module to the display panel, and outputs the backlight partition control signal generated by the conversion processing module to the Mini-LED backlight module.
Optionally, the conversion processing module is further configured to initialize a parameter of the signal output interface according to an interface connected to the display panel.
Optionally, the types of the signal input interface include One or more of MIPI, EDP, LVDS, TTL (RGB), and V-By-One.
Optionally, initializing the signal input interface by the conversion processing module includes: the conversion processing module sets the transmission rate of the signal input interface, sets the Lane number and sets the corresponding protocol parameters.
According to the invention, by adding the backlight control chip which has the functions of image analysis and local dimming, the main control chip acquires video stream data from an external interface or a local storage device, the backlight control chip analyzes the video stream data into a video image and calculates backlight partition control signals, and the backlight partition control signals are sent to the Mini-LED backlight module to perform local backlight adjustment while the video image is forwarded to the display panel, so that the problems that the image analysis of the current local dimming method is completed by the main control chip and then the backlight adjustment is performed by an external backlight processing unit, the energy consumption of the main control chip is higher, the requirement on the main control chip is higher, and the applicability is poorer when the platform is crossed are solved, and the effects of improving the image display contrast, reducing the power consumption of the main control and having strong applicability are realized.
Drawings
Fig. 1 is a schematic structural diagram of a backlight control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another backlight control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a backlight control chip of a backlight control system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a backlight control system for performing backlight control according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As shown in fig. 1, a backlight control system includes: the backlight module comprises a main control chip 100, a backlight control chip 200, a Mini-LED backlight module 300 and a display panel 400;
the main control chip 100 acquires video stream data from an external interface or a local storage device;
the backlight control chip 200 receives and caches each frame of video image in the video stream data, the backlight control chip 200 analyzes each frame of video image and generates a backlight partition control signal, and the backlight partition control signal is sent to the Mini-LED backlight module 300 while forwarding each frame of video image to the display panel 400.
The technical scheme provided by the embodiment can be applied to a tablet personal computer, a mobile phone, a vehicle-mounted display screen, an industrial personal computer, medical control and the like, and the display content of the screen can be video stream data received through an external interface, can also be video stream data received through a wireless network, and can also be stored in a local storage device. The main control chip 100 acquires video stream data from an external interface or a local storage device, and transmits the video stream data to the backlight control chip 200, the backlight control chip 200 is externally hung and can be connected to any type of main control chip 100, the backlight control chip 200 caches each frame of video image in the video stream data to a storage module, analyzes each frame of video image, and obtains a backlight partition control signal corresponding to each frame of video image by a local dimming method, the backlight control chip 200 outputs in two ways, one way outputs each frame of video image to the display panel 400, and the other way outputs the backlight partition control signal to the Mini-LED backlight module 300; when the display panel 400 displays a video image, the Mini-LED driving IC changes the luminance value of the backlight area according to the backlight partition control signal, thereby improving the contrast of the video image display.
As shown in fig. 2, optionally, the backlight control chip 200 includes a conversion processing module 220 and a plurality of signal input interfaces 210, where the signal input interfaces 210 are connected to the main control chip 100 and the conversion processing module 220; the signal input interface 210 receives video stream data transmitted by the main control chip 100, and the conversion processing module 220 initializes the signal input interface according to the signal input interface corresponding to the video stream data determined by the main control chip 100.
The backlight control chip 200 supports a variety of signal input interfaces 210 that can process video stream data in a variety of formats. When the main control chip 100 acquires video stream data from an external interface or a local storage device, judging the format of the video stream data, thereby acquiring the type of a signal input interface 210 through which the video stream data passes during transmission; before the conversion processing module 220 receives the video stream data transmitted by the main control chip 100 through the signal input interface 210, the conversion processing module 220 initializes the corresponding signal input interface 210 according to the type of the signal input interface 210 corresponding to the video stream data judged by the main control chip 100, and after the initialization of the signal input interface 210 is completed, the conversion processing module 220 receives the video stream data transmitted by the main control chip 100.
As shown in fig. 3, optionally, the types of the signal input interface 210 include One or more of a MIPI interface 211, an EDP interface 212, an LVDS interface 213, a ttl (rgb) interface 214, and a V-By-One interface 215.
The MIPI interface 211 supports D-PHY, M-PHY and C-PHY protocols, and the transmission rate reaches 2.5 Gbps/Lane; the EDP interface 212 supports the eDP1.4b standard and supports multi-rate transmission, such as 1.62bps/Lane, 2.16bps/Lane, 2.43bps/Lane, 2.7bps/Lane, 3.24bps/Lane, 4.32bps/Lane, 5.4Gbps/Lane, etc.; the LVDS interface 213 supports JEIDA and VESA standards, and the transmission rate reaches 1 Gbps/Lane; ttl (RGB) interface 214 supports RGB565, RGB666, RGB888, and RGB101010 formats, pixel clock up to: 200MHz, the higher the resolution of the liquid crystal panel, the higher the frequency of the pixel clock signal, so the TTL (RGB) interface 215 can be applied to the devices with high pixel requirements; the maximum transmission speed of the V-By-One interface is 3.75 Gbps/Lane. The multiple signal input interfaces are suitable for mainstream video data formats, and the backlight control chip can process multiple video data formats.
The signal input interface 210 needs to support several level standards: TTL (LVCMOS), LVDS, SLVS, and CML. Wherein, the receiving TTL (RGB) interface 215 supports TTL (LVCMOS) level standard; the LVDS interface 214 supports the LVDS level standard; the receiving MIPI interface 211 supports SLVS and ttl (lvcmos) level standards; the EDP interface 212 and the V-By-One interface 213 support the CML level standard.
With reference to fig. 3, optionally, the backlight control chip 200 further includes a storage module 240, the conversion processing module 220 is connected to the signal input interface 210 and the storage module 240, and the conversion processing module 220 unpacks the video stream data into each frame of video image according to a protocol corresponding to the signal input interface 210 of the video stream data input, and stores the video stream data into the storage module 240.
The conversion processing module 220 includes a conversion unit 221 and an image analysis unit 222, after the backlight control chip 200 receives the video stream data through each interface, the video stream data is unpacked into each frame of video image through the conversion unit 221 according to the protocol corresponding to each interface, the conversion unit 221 selects the video image data to be transferred to the storage module 240, and the storage module 240 waits for the backlight control chip 200 to perform image analysis processing, wherein the storage module 240 may be a DDR or a PSRAM Memory.
Optionally, the conversion processing module 220 reads each frame of video image in the storage module 240, performs partition processing and obtains a brightness value of each pixel point of each partition, and calculates a backlight brightness value of a corresponding region according to the brightness value of each pixel to generate a corresponding backlight partition control signal.
Optionally, the conversion processing module 220 calculates a luminance value of each pixel to be mapped to a backlight luminance value of a corresponding region according to a Local Dimming algorithm.
The local dynamic dimming is to perform partition image processing on an input image, and count the image characteristics of each partition, so as to calculate the appropriate backlight value of each partition according to the characteristics. The backlight value of each subarea is determined by the LED lamps in the subarea, and the LED lamps in different subareas can be set to different brightness values at the same time to output different backlight intensities. Illustratively, the resolution of the video image is H × V, the image analysis unit 222 in the conversion processing module 220 reads each frame of video image in the storage module 240, and performs partition processing on the video image to obtain N regions, performs statistics on image features in each region, performs luminance analysis on each region according to a localdimeming algorithm, calculates a luminance value of each pixel in each region, maps the luminance value of each pixel in the video image to a corresponding region according to a ratio to obtain a backlight luminance value of each region, and generates a corresponding backlight partition control signal according to the backlight luminance value. As shown in fig. 4, the video image 10 includes a dark color region 11 and a light color region 12, when the display panel displays the video image 10, the Mini-LED backlight module performs local dimming on the backlight region 20 in different regions, for example, the luminance value of the corresponding backlight region 21 is adjusted according to the luminance value of the image region 13, the luminance value of each pixel is mapped to the corresponding region, for example, the Mini-LED 21A corresponding to the dark color region 11A is controlled to emit weak light or no light, and the Mini-LED 21B corresponding to the light color region 12 is controlled to emit strong light, so that the contrast of the display effect of the video image 10 is improved, that is, the dark color region 11 is darker in color, and the light color region 12 is lighter in color.
With reference to fig. 3, optionally, the backlight control chip 200 further includes a signal output interface 230, the conversion processing module 220, and the Mini-LED backlight module 300 provide backlight for the display panel 400, the signal output interface 230 outputs each frame of video image processed by the conversion processing module 220 to the display panel 400, and outputs the backlight partition control signal generated by the conversion processing module 220 to the Mini-LED backlight module 300.
Types of signal output interface 230 include One or more of MIPI interface 231, EDP interface 232, LVDS interface 233, ttl (rgb) interface 234, and V-By-One interface 235. The MIPI interface 231 supports D-PHY, M-PHY and C-PHY protocols, and the transmission rate reaches 2.5 Gbps/Lane; the EDP interface 232 supports the eDP1.4b standard and supports multi-rate transmission, such as 1.62bps/Lane, 2.16bps/Lane, 2.43bps/Lane, 2.7bps/Lane, 3.24bps/Lane, 4.32bps/Lane, 5.4Gbps/Lane, etc.; the LVDS interface 233 supports JEIDA and VESA standards, and the transmission rate reaches 1 Gbps/Lane; ttl (RGB) interface 234 supports RGB565, RGB666, RGB888, and RGB101010 formats, pixel clock up to: 200 MHz; the maximum transmission speed of the V-By-One interface 235 is 3.75 Gbps/Lane. The multiple signal output interfaces 230 are suitable for the mainstream video data format, and the backlight control chip 200 can output the processed multiple video data formats to the display panel 400.
When the signal output interface 230 outputs each frame of video image to the display panel 400 for display, the generated backlight partition control signal is output to the Mini-LED backlight module 300 to adjust the backlight brightness values of different partitions, so as to improve the contrast of the video image.
Optionally, the conversion processing module 220 is further configured to initialize parameters of the signal output interface 230 according to an interface connected to the display panel 400.
Optionally, the initializing the signal input interface 230 by the conversion processing module 220 includes: the conversion processing module 220 sets the transmission rate of the signal input interface 230, sets the Lane number, and sets the corresponding protocol parameters.
Before the conversion processing module 220 receives the video stream data transmitted by the main control chip 100, the parameter initialization is performed on the signal input/output interface 210 connected to the main control chip 100, and the parameter initialization is performed on the signal output interface 230 connected to the display panel 400, where the specific contents include setting the transmission rate of the signal input interface, setting the Lane number, and setting the corresponding protocol parameters.
After the interface initialization, the conversion processing module 220 is further used for initializing screen parameters of the display panel 400, including: PCLK Frequency, Frame Rate, V Front Port, V Back Port, V Active, V Sync Width, H Front Port, H Back Port, H Active, H Sync Width.
The embodiment of the invention can be simply connected to any main control chip by adding an externally-hung backlight control chip which has the functions of image analysis and local dimming, the main control chip acquires video stream data from an external interface or a local storage device, the backlight control chip analyzes the video stream data to obtain a video image and calculates backlight partition control signals, the backlight partition control signals are transmitted to a Mini-LED backlight module to carry out local backlight adjustment while the video image is forwarded to a display panel, the problems that the image analysis of the current local dimming method is finished by the main control chip and then the backlight adjustment is carried out by an external backlight processing unit, the energy consumption of the main control chip is higher, the requirement on the main control chip is higher, the applicability is poorer when a platform is crossed are solved, the image display contrast is improved, and the power consumption of the main control is reduced, the applicability is strong.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A backlight control system, comprising: the backlight control system comprises a main control chip, a backlight control chip, a Mini-LED backlight module and a display panel;
the main control chip acquires video stream data from an external interface or a local storage device;
the backlight control chip receives and caches each frame of video image in the video stream data, analyzes each frame of video image and then generates a backlight partition control signal, and forwards each frame of video image to the display panel and simultaneously sends the backlight partition control signal to the Mini-LED backlight module.
2. The backlight control system according to claim 1, wherein the backlight control chip comprises a conversion processing module and a plurality of signal input interfaces, and the signal input interfaces are connected with the main control chip and the conversion processing module; the signal input interface receives video stream data transmitted by the main control chip, and the conversion processing module initializes the signal input interface according to the type of the signal input interface corresponding to the video stream data judged by the main control chip.
3. The backlight control system of claim 2, wherein the backlight control chip further comprises a storage module, the conversion processing module is connected to the signal input interface and the storage module, and the conversion processing module unpacks the video stream data into each frame of video image according to a protocol corresponding to the signal input interface of the video stream data input, and stores the video stream data into the storage module.
4. The backlight control system according to claim 3, wherein the conversion processing module reads each frame of video image in the storage module, performs partition processing and obtains a brightness value of each pixel of each partition, and calculates a backlight brightness value of a corresponding region according to the brightness value of each pixel to generate a corresponding backlight partition control signal.
5. The backlight control system according to claim 4, wherein the conversion processing module calculates the luminance value of each pixel mapped to the backlight luminance value of the corresponding region according to a Local Dimming algorithm.
6. The backlight control system of claim 4, wherein the backlight control chip further comprises a signal output interface, the signal output interface provides backlight for the display panel with the conversion processing module and the Mini-LED backlight module, the signal output interface outputs each frame of video image processed by the conversion processing module to the display panel, and outputs the backlight partition control signal generated by the conversion processing module to the Mini-LED backlight module.
7. The backlight control system according to claim 4, wherein the conversion processing module is further configured to initialize parameters of the signal output interface according to an interface connected to the display panel.
8. The backlight control system of claim 2, wherein the types of the signal input interface include One or more of MIPI, EDP, LVDS, TTL (RGB) and V-By-One.
9. The backlight control system of claim 2, wherein the conversion processing module initializing the signal input interface comprises: the conversion processing module sets the transmission rate of the signal input interface, sets the Lane number and sets the corresponding protocol parameters.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023268A (en) * | 2021-10-11 | 2022-02-08 | 安徽康佳电子有限公司 | Backlight brightness adjusting method and computer readable storage medium |
| CN114299888A (en) * | 2021-12-31 | 2022-04-08 | 连云港小牛电子科技有限公司 | Dynamic adjustment display module control system |
| CN115762428A (en) * | 2022-11-23 | 2023-03-07 | 广州文石信息科技有限公司 | Display device and system based on electronic ink screen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697270A (en) * | 2009-10-29 | 2010-04-21 | 彩虹集团公司 | Structure and method for controlling dynamic backlight of LED liquid crystal display device |
| CN104332140A (en) * | 2014-10-28 | 2015-02-04 | 深圳创维－Rgb电子有限公司 | Backlight driving system for regional dimming and regional dimming method |
| US20160035286A1 (en) * | 2014-07-30 | 2016-02-04 | Renesas Electronics Corporation | Image processing device and image processing method |
| CN110136654A (en) * | 2019-04-03 | 2019-08-16 | 深圳康佳电子科技有限公司 | A kind of dimming backlight subregion dimming controlling method, intelligent terminal and storage medium |
| CN111818284A (en) * | 2020-07-08 | 2020-10-23 | 康佳集团股份有限公司 | Regional dimming system and method for ultra-high-definition television |
| US20200413508A1 (en) * | 2019-06-27 | 2020-12-31 | Hisense Visual Technology Co., Ltd. | Method And Device For Controlling Backlight, And Display Device |
| CN112530377A (en) * | 2020-12-08 | 2021-03-19 | 康佳集团股份有限公司 | Backlight display control chip and display device |
-
2021
- 2021-03-26 CN CN202110325874.4A patent/CN113053329B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697270A (en) * | 2009-10-29 | 2010-04-21 | 彩虹集团公司 | Structure and method for controlling dynamic backlight of LED liquid crystal display device |
| US20160035286A1 (en) * | 2014-07-30 | 2016-02-04 | Renesas Electronics Corporation | Image processing device and image processing method |
| CN104332140A (en) * | 2014-10-28 | 2015-02-04 | 深圳创维－Rgb电子有限公司 | Backlight driving system for regional dimming and regional dimming method |
| CN110136654A (en) * | 2019-04-03 | 2019-08-16 | 深圳康佳电子科技有限公司 | A kind of dimming backlight subregion dimming controlling method, intelligent terminal and storage medium |
| US20200413508A1 (en) * | 2019-06-27 | 2020-12-31 | Hisense Visual Technology Co., Ltd. | Method And Device For Controlling Backlight, And Display Device |
| CN111818284A (en) * | 2020-07-08 | 2020-10-23 | 康佳集团股份有限公司 | Regional dimming system and method for ultra-high-definition television |
| CN112530377A (en) * | 2020-12-08 | 2021-03-19 | 康佳集团股份有限公司 | Backlight display control chip and display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023268A (en) * | 2021-10-11 | 2022-02-08 | 安徽康佳电子有限公司 | Backlight brightness adjusting method and computer readable storage medium |
| CN114299888A (en) * | 2021-12-31 | 2022-04-08 | 连云港小牛电子科技有限公司 | Dynamic adjustment display module control system |
| CN115762428A (en) * | 2022-11-23 | 2023-03-07 | 广州文石信息科技有限公司 | Display device and system based on electronic ink screen |
| CN115762428B (en) * | 2022-11-23 | 2023-08-15 | 广州文石信息科技有限公司 | Display device and system based on electronic ink screen |
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| CN113053329B (en) | 2022-10-14 |
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