Display device

Abstract

A display device includes a display panel, a backlight module, and a processor. The display panel is used to display a display picture. The backlight module is used to provide backlight brightness to the display panel. The processor is used to generate the display picture and determine the backlight brightness corresponding to the display picture. The processor is further used to generate a plurality of display regions in the display picture according to display settings, and determine a plurality of backlight regions in the backlight module corresponding to the plurality of display regions. The processor receives or generates a plurality of picture contents, and determines the size and position of the plurality of display regions in the display picture and the plurality of backlight regions corresponding to the plurality of display regions according to the display settings and the plurality of picture contents. The processor generates a plurality of region backlight control signals corresponding to the plurality of backlight regions to control the backlight module to provide the backlight brightness. The embodiment provides users with better visual experience.

Description

Technical Field

[0001] The embodiments described in this disclosure relate to a display device, and more particularly to a display device for backlight adjustment. Background Technology

[0002] Users typically only use one monitor at a time. When they want to view two signal sources simultaneously, they must enable the Picture-in-Picture (PIP) mode, which divides the screen into two areas to display the images from each signal source. However, when one signal source's image is temporarily unused, its corresponding sub-image still occupies part of the screen, affecting the user's viewing and operational experience. If the user manually closes the sub-image, they cannot see the real-time status or information of the signal source in that sub-image until they re-enable PIP, potentially missing important real-time information. Furthermore, monitors usually only have a uniform display setting. When PIP mode is enabled, all PIP areas must use the same settings, preventing the application of different settings for different signals, thus failing to provide a good user experience. Summary of the Invention

[0003] This disclosure relates to a display device, characterized by comprising a display panel, a backlight module, and a processor. The display panel displays a display image. The backlight module provides backlight brightness to the display panel. The processor is coupled to the display panel and the backlight module, and is used to generate a display image and determine the backlight brightness corresponding to the display image. The processor is further used to generate multiple display areas in the display image according to display settings, and to determine multiple backlight areas in the backlight module corresponding to the multiple display areas. The processor receives or generates multiple image contents, and determines the size and position of the multiple display areas in the display image and the multiple backlight areas corresponding to the multiple display areas according to the display settings and the multiple image contents. The processor generates multiple area backlight control signals corresponding to the multiple backlight areas to control the backlight module to provide backlight brightness.

[0004] In some embodiments, the processor determines whether the first color value histogram and the second color value histogram are the same or similar within a time interval based on a continuous frame of one of the screen contents, so as to determine a working mode of one of the screen contents.

[0005] In some embodiments, the processor is further configured to enlarge, reduce, or hide the display areas, and control multiple backlight areas corresponding to the display areas to increase brightness, decrease brightness, or flicker.

[0006] This disclosure relates to a display device, characterized by comprising a display panel, a backlight module, and a processor. The display panel displays a display image. The backlight module provides backlight brightness to the display panel and has multiple backlight elements, each capable of receiving different types of backlight control signals to generate brightness. The processor is coupled to the display panel and the backlight module, and is used to generate a display image and determine the corresponding backlight brightness for that display image. The processor further generates multiple display areas in the display image according to display settings, and determines multiple backlight areas in the backlight module corresponding to the multiple display areas, with each display area displaying different image content. Based on dimming mode settings for the multiple display areas, the processor generates multiple backlight control signals for the multiple backlight areas to control the switching of multiple dimming modes for the multiple backlight areas.

[0007] In some embodiments, the dimming modes include DC dimming mode and pulse width modulation dimming mode.

[0008] In some embodiments, the processor generates multiple brightness matrices based on the display areas and the screen content, merges the brightness matrices to generate a main brightness matrix corresponding to the display screen, and controls the backlight module to provide the backlight brightness based on the main brightness matrix.

[0009] This disclosure relates to a display device, characterized by comprising a display panel, a backlight module, and a processor. The display panel is used to display a display image. The backlight module is used to provide backlight brightness to the display panel. The processor is coupled to the display panel and the backlight module, used to generate a display image and determine the backlight brightness corresponding to the display image. The processor is further used to receive a continuous image signal and to determine the real-time state of the continuous image signal in real time. The processor determines the operating mode of the continuous image signal based on the real-time state of the continuous image signal. When the operating mode is not an idle mode, a display area is generated in the display image to display the first image content of the continuous image signal. The processor determines that the backlight area of ​​the backlight module corresponds to the display area based on the display area, and generates a backlight control signal corresponding to the backlight area based on the image content.

[0010] In some embodiments, the processor generates a first color value histogram and a second color value histogram based on the continuous image signal within a time interval, and determines the working mode of the continuous image signal based on whether the first color value histogram and the second color value histogram are the same or similar.

[0011] In some embodiments, the characteristic is that when the working mode of the continuous image signal is an idle mode, the processor shrinks or hides the display area in the display screen.

[0012] In some embodiments, the processor generates a backlight control signal that reduces the brightness of the backlight area when the working mode of the continuous image signal is an idle mode. Attached Figure Description

[0013] To make the above and other objects, features, advantages and embodiments disclosed herein more apparent and understandable, the accompanying drawings are described below:

[0014] Figure 1 These are schematic diagrams of display devices illustrated in accordance with some embodiments of this disclosure;

[0015] Figure 2 These are schematic diagrams illustrating display screens according to some embodiments of this disclosure;

[0016] Figure 3 This is a schematic diagram of a backlight module illustrated in accordance with some embodiments of this disclosure;

[0017] Figure 4 This is a flowchart illustrating a backlight adjustment method according to some embodiments of this disclosure;

[0018] Figure 5 This is a flowchart illustrating a backlight adjustment method according to some embodiments of this disclosure;

[0019] Figure 6 This is a flowchart illustrating a backlight adjustment method according to some embodiments of this disclosure;

[0020] Figure 7 This is a flowchart illustrating a backlight adjustment method according to some embodiments of this disclosure; and

[0021] Figure 8 This is a schematic diagram of another display device illustrated in accordance with some embodiments of the present disclosure.

[0022] [Symbol Explanation]

[0023] 100: Display device

[0024] 110: Processor

[0025] 140: Display panel

[0026] 190: Backlight module

[0027] X, Y, Z: Direction

[0028] 200: Display screen

[0029] 210: Main screen

[0030] 230:Sub-screen

[0031] 270: Main screen area

[0032] 280: Sub-screen area

[0033] 290: Sub-screen area

[0034] 160: Backlight unit

[0035] 370: Backlight area

[0036] 380: Backlight area

[0037] 390: Backlight area

[0038] 162A: Sub-backlight unit

[0039] 162B: Main backlight unit

[0040] 400, 500, 600, 700: Backlight Adjustment Method

[0041] S410, S420, S430, S440, S450, S460: Steps

[0042] S510, S520, S530, S540, S550, S560, S570: Steps

[0043] S610, S620, S640: Steps

[0044] S650, S660, S670, S690: Steps

[0045] S710, S720, S730, S740, S750, S760, S770: Step 120: Timing Controller

[0046] 130: Source Driver and Gate Driver

[0047] 150: Drive circuit

[0048] 170: LED Power Management Unit

[0049] 180: Power switching unit

[0050] 800: Display device Detailed Implementation

[0051] The term "coupled" as used in this article can also refer to "electrical coupling," and the term "connection" can also refer to "electrical connection." "Coupled" and "connection" can also refer to two or more components cooperating or interacting with each other.

[0052] refer to Figure 1 . Figure 1 This is a schematic diagram of a display device 100 illustrated in accordance with some embodiments of the present disclosure.

[0053] by Figure 1 For example, the display device 100 includes a processor 110, a display panel 140, and a backlight module 190. In terms of connectivity, the processor 110, display panel 140, and backlight module 190 are coupled to each other. In some embodiments, the backlight module 190 includes a driving circuit 150 and backlight units 160. In some embodiments, the display panel 140 may be divided into multiple display zones, corresponding to multiple backlight areas formed by the backlight units 160, each backlight area having one or more backlight units 160, which respectively illuminate the corresponding display zone.

[0054] Please see Figure 2 . Figure 2 This is a schematic diagram of a display screen 200 illustrated according to some embodiments of the present disclosure. The display screen 200 is composed of... Figure 1 The display is shown on the display panel 140. In some embodiments, the display screen 200 includes a main screen 210 and a sub-screen 230, which are displayed when the display device operates in a picture-and-child mode. The main screen 210 and the sub-screen 230 are different display areas. Generally, the size of the main screen 210 is the same as the size of the display screen 200, and the relative position and size of the sub-screen 230 on the main screen 210 are adjusted by the processor 110 according to settings or dynamically and automatically. In some embodiments, the display settings can be switched to different split-screen display modes, such as picture-by-picture (PBP) mode or other multi-screen partition display modes. Each screen partition is manually or automatically set by the user according to the picture signal, including local dimming, high dynamic range (HDR) or other display settings. In addition to the fixed screen partition size, the processor 110 can automatically adjust the range, position and display settings of each screen partition according to the picture signal and automatic partitioning settings, and immediately map the backlight area to the current screen partition.

[0055] Please see Figure 3 . Figure 3 This is a schematic diagram of a backlight module 190 illustrated according to some embodiments of this disclosure. The backlight module 190 is used to provide backlight brightness to the display panel 140. Figure 3 As illustrated, in some embodiments, the backlight module 190 includes a plurality of backlight units 160.

[0056] Please refer back to this. Figure 1In some embodiments, the processor 110 is used to receive input signals and determine the light output brightness of each backlight unit 160 based on the input signals, and output a backlight control signal to the driving circuit 150 accordingly. In some embodiments, the input signals include screen content. In some embodiments, the processor 110 is used to receive or generate screen content.

[0057] The above-described configuration of the display device 100 is for illustrative purposes only, and all configurations of the display device 100 are within the scope of this disclosure. Detailed operation of the display device 100 will be explained below. Figures 4 to 7 process Figure 1 And provide an explanation.

[0058] Please see Figure 4 . Figure 4 This is a flowchart illustrating a sub-screen state determination method 400 according to some embodiments of this disclosure. The sub-screen state determination method 400 can be applied to, for example... Figure 1 The display device 100 simultaneously executes this method on all received and displayable sub-frame signals, and continuously processes each frame of the sub-frame signals. Please refer to the following as well. Figure 1 and Figure 4 .

[0059] In step S410, the histogram of the first color value of the first frame of the sub-picture signal and the histogram of the second color value of the second frame of the sub-picture signal are statistically analyzed. The sub-picture signal may be a display function menu or a computer operating system connected to the display, or it may be provided by a television channel, peripheral devices such as disc players, game consoles, mobile devices, or networks such as streaming media pages or applications, video conferencing applications, online instant messaging, email, etc. In some embodiments, step S410 is performed by... Figure 1 The display's own processor 110 executes the input signal. In some embodiments, the input signal includes... Figure 2 The first frame and the second frame of sub-screen 230 are two consecutive frames. When the display receives a frame, the processor 110 will automatically calculate its color value histogram and store it for later use.

[0060] In step S420, it is determined whether the color value difference between the first color value histogram and the second color value histogram is greater than a threshold. In some embodiments, Figure 1The processor 110 calculates the color value difference between the first color value histogram and the second color value histogram, and determines whether the color value difference is greater than a threshold. If step S420 determines that the color value difference is greater than the threshold, step S440 is executed. If step S420 determines that the color value difference is not greater than the threshold, step S430 is executed.

[0061] In step S430, it is determined whether the situation where the color value difference is not greater than a threshold continues for a certain time interval. In some embodiments, step S430 is performed by... Figure 1 The processor 110 executes the process. If step S430 determines that the color value difference is not greater than the threshold for a period of time, such as a pre-set time value between tens of seconds and several minutes, then step S450 is executed. If step S430 determines that the color value difference is not greater than the threshold for a period of time, then the process returns to step S410 to start again, in order to obtain... Figure 2 The third color value histogram of the third frame of sub-frame 230. The third frame and the second frame are two consecutive frames. In the newly started step S410, the first color value histogram is the second color value histogram of the previous S410, and the new second color value histogram is the third color value histogram. This process is repeated without further explanation.

[0062] In step S440, it is determined whether the previous frame was in an idle state. In some embodiments, step S440 is performed by... Figure 1 The processor 110 executes the following steps: S430 and S450 of the previous sub-frame state determination method 400 determine that the previous frame of the current sub-frame state determination method 400 is in an idle state. Step S440 reads the determination result of the previous sub-frame state determination method 400. If step S440 determines that the previous frame is in an idle state, step S460 is executed. If step S440 determines that the previous frame is not in an idle state, the process returns to step S410 and restarts, obtaining... Figure 2 The third color value histogram of the third frame of sub-picture 230. The third frame and the second frame are two consecutive frames. Then, as mentioned above, the sub-picture state judgment method 400 starts again from S410 and will not be repeated.

[0063] In step S450, it is determined that the sub-screen signal is in an idle mode, meaning that the sub-screen signal has not shown sufficient screen changes for a certain period of time. This can be addressed by reducing the area of ​​the sub-screen signal on the display screen, lowering its screen coverage priority, moving it to a less observable position, etc. In some embodiments, step S450 is... Figure 1 The processor 110 executes the process, and then, as previously described, the sub-screen state determination method 400 restarts from S410.

[0064] In step S460, it is determined that the sub-screen signal has entered the alert mode, indicating that the sub-screen signal has undergone a new screen change from an idle screen state, and the user needs to be alerted to this new situation immediately. In some embodiments, step S460 is performed by... Figure 1 The processor 110 executes the process, and then, as previously described, the sub-screen state determination method 400 restarts from S410.

[0065] Please see Figure 5 . Figure 5 This is a flowchart illustrating a backlight adjustment method 500 according to some embodiments of the present disclosure. The backlight adjustment method 500 can be applied to, for example... Figure 1 The display device 100 will immediately receive the result of the sub-screen state determination method 400 processing each sub-screen signal. Please refer to the following as well. Figure 1 and Figure 5 .

[0066] In step S510, the display device 100 activates or executes the picture-in-picture advanced mode. In some embodiments, step S510 is performed by... Figure 1 The processor 110 executes the commands. In some embodiments, the user activates the picture-in-picture advanced mode via a remote control (not shown), and the remote control transmits an input signal to the processor 110 according to the user's settings. Upon receiving the input signal, the processor 110... Figure 1 The advanced mode of the screen-to-screen display of the display device 100 is activated, and the backlight adjustment method 500 is continuously executed repeatedly in the advanced mode of the screen-to-screen display.

[0067] In step S520, the operating mode of the display device is monitored and determined. In some embodiments, step S520 is performed by... Figure 1 The processor 110 executes the commands. In some embodiments, the processor 110 executes the commands according to... Figure 4 The sub-screen status judgment method 400 monitors and determines the working mode of each sub-screen signal.

[0068] In step S530, it is determined whether the sub-screen signal is currently in idle mode. In some embodiments, step S530 is performed by... Figure 1 The processor 110 in the process executes the steps. If it is determined in step S530 that the sub-screen signal is currently in idle mode, step S540 is executed. If it is determined in step S530 that the sub-screen signal is currently not in idle mode, the process returns to step S520.

[0069] In step S540, the sub-screen range of the sub-screen signal in the idle mode is reduced, and the backlight brightness within the sub-screen range is decreased. In some embodiments, step S540 is performed by... Figure 1Processor 110 in the system executes the commands. Please refer to the following: Figure 2 In some embodiments, the processor 110 adjusts as follows: Figure 2 The ratio of sub-screen 230 to main screen 210 can be used to reduce the size of sub-screen 230, for example, from sub-screen size 280 to sub-screen size 290, but this is not the only limitation. The number, size, and position of sub-screens are not limited to this. Figure 2 As shown in sub-screen 230, changes to sub-screen 230 may also include reducing screen coverage priority or moving to a more difficult-to-observe position, such as being covered by other sub-screens or the main screen, causing the sub-screen area to partially or completely disappear, or the sub-screen area to move to a corner position. In some embodiments, multiple sub-screens of different sizes may exist simultaneously on the display screen. The display device screen may display multiple sub-screens simultaneously without displaying the main screen, and the size, position, and brightness of each sub-screen can be dynamically adjusted by the processor 110. For example, when there are multiple sub-screens, the processor 110 may select some sub-screens to be covered and not displayed according to the sub-screen signal status, or select some sub-screens to be displayed side by side and adjust their size. The size and shape of the sub-screens displayed at the same time may be equal, similar, or different, and are dynamically adjusted by the processor 110.

[0070] Please refer to this document as well. Figure 3 .At Figure 3 In the middle, the backlight area 380 is for corresponding to Figure 2 The sub-picture range 280 of the neutron frame 230, and the backlight area 390 are corresponding to Figure 2 The sub-picture range of neutron frame 230 is 290, that is... Figure 3 The backlight area 390 and Figure 2 The sub-picture range 290 of the sub-picture 230 overlaps in the Z direction. The backlight areas 380 and 390 contain multiple sub-backlight units 162A from the backlight units 160. In step S540, after the processor 110 reduces the range of the sub-picture 230, it determines the corresponding backlight area 390 based on the reduced range and reduces the backlight brightness of the multiple sub-backlight units 162A located in the backlight area 390, thus darkening the sub-picture range in the idle mode. As mentioned above, the processor 110 can dynamically adjust the range, shape, or position of each sub-picture and determine the backlight area corresponding to each displayed sub-picture after adjustment, so that the backlight area corresponding to each displayed sub-picture produces the brightness required for that sub-picture.

[0071] In step S550, it is determined whether the sub-screen signal is currently in alert mode. In some embodiments, step S550 is performed by... Figure 1The processor 110 executes the process. If it is determined in step S550 that the sub-screen signal has entered the alert mode from the idle mode, then step S560 is executed. If it is determined in step S550 that the sub-screen signal is not currently in the alert mode, then the process returns to step S520.

[0072] In step S560, the sub-screen that has entered the alert mode is enlarged and the sub-backlight brightness of the sub-screen is adjusted to make the sub-screen blink. Please refer to [link / reference]. Figure 2 In some embodiments, the processor 110 adjusts as follows: Figure 2 The ratio of sub-screen 230 to main screen 210 can be used to enlarge the area of ​​sub-screen 230, for example, from sub-screen area 290 to sub-screen area 280, but it is not limited to this. The number, area, and position of sub-screens are not limited to this. Figure 2 As shown in sub-screen 230, changes to sub-screen 230 may also include increasing screen coverage priority or moving to a more easily observable position. For example, the sub-screen range may cover part or all of the area of ​​other sub-screens or the main screen, or the sub-screen range may be moved to a position closer to the center. As mentioned above, in some embodiments, multiple sub-screens of different sizes may exist simultaneously on the display screen. The display device screen may display multiple sub-screens simultaneously without displaying the main screen, and the size, position, and brightness of each sub-screen can be dynamically adjusted by the processor 110. For example, when there are multiple sub-screens, the processor 110 may select some sub-screens to be covered and not displayed according to the sub-screen signal status, or select some sub-screens to be displayed side by side and adjust their size. The size and shape of the sub-screens displayed at the same time may be equal, similar, or different, and are dynamically adjusted by the processor 110.

[0073] Please refer to this document as well. Figure 3 .At Figure 3 In the middle, the backlight area 380 is for corresponding to Figure 2 The sub-picture range 280 of the neutron frame 230, and the backlight area 390 are corresponding to Figure 2 The sub-picture range of neutron frame 230 is 290, that is... Figure 3 The backlight area 380 and Figure 2The sub-screen range 280 of the sub-screen 230 overlaps in the Z direction. Backlight areas 380 and 390 contain sub-backlight units 162A from multiple backlight units 160. In step S560, the processor 110 magnifies the range of the sub-screen 230, determines the corresponding backlight area 380 based on the magnified range, and increases the sub-backlight brightness of the multiple sub-backlight units 162A located in the backlight area 380, thus brightening the sub-screen range in the alert mode. In some embodiments, the processor 110 further causes the sub-backlight units 162A in the backlight area 380 to flash back and forth within a certain range of their emitted brightness for a certain period of time. For example, in some embodiments, the processor 110 drives the sub-backlight units 162A to flash back and forth between 10% and 80% brightness for 5 seconds to remind the user to pay attention to the sub-screen range corresponding to the backlight area 380. The duration and sub-backlight brightness described above are for illustrative purposes only. The processor 110 may also make only the sub-backlight area corresponding to a portion of the sub-screen range flicker, such as only making the edge, corner, interior or center of the sub-screen range flicker. The processor 110 may also only increase the light output brightness of the sub-screen range, or only restore the brightness of the sub-screen range to a preset value.

[0074] In step S570, the brightness of the sub-backlight of the sub-screen is adjusted to a preset value. In some embodiments, step S570 is performed by... Figure 1 The processor 110 in the process executes. For example, the processor 110 makes such... Figure 3 After the sub-backlight unit 162A flashes its brightness for a certain period of time or otherwise alerts the user, the sub-backlight brightness is adjusted to a preset value so that the corresponding sub-screen signal is displayed normally within that sub-screen area. In some embodiments, the preset value is set by the user via a remote control or other device. Figure 1 The processor 110 processes the data accordingly. In some embodiments, when a sub-screen enters the alert mode, the processor 110 simultaneously adjusts the area and position of all sub-screens, including closing or creating new sub-screen areas and dynamically adjusting the area and position of all sub-screens, and determining the sub-backlight area corresponding to each sub-screen. For example, the sub-screen entering the alert mode may appear from a hidden state, be enlarged, or be moved to a more prominent position, so that other sub-screens or the main screen are partially or completely covered by the sub-screen. Then, the sub-screen is adjusted back to its size and position alongside other sub-screens, or returned to the standard range and position of the sub-screen in the parent-child screen mode. The processor 110 simultaneously determines the sub-backlight area range corresponding to all currently displayed sub-screens and the main screen, and generates the required brightness.

[0075] Please see Figure 6 . Figure 6This is a flowchart illustrating an advanced backlight adjustment method 600 according to some embodiments of the present disclosure. The advanced backlight adjustment method 600 can be applied to, for example... Figure 1 The display device 100 can adjust the backlight module to provide the required brightness for the display screen according to the display settings of each sub-screen and the main screen. Please refer to the following as well. Figure 1 and Figure 6 .

[0076] In step S610, the display device 100 activates or executes a screen advancement mode. In some embodiments, step S610 is performed by... Figure 1 The processor 110 in the middle executes. In some embodiments, the processor 110 performs the operation based on the input signal. Figure 1 The advanced screen mode of the display device 100 is activated, and the advanced backlight adjustment method 600 is continuously executed repeatedly in the advanced screen mode.

[0077] In step S620, it is determined whether the Dynamic Picture Response Time (MPRT) function is enabled in the first screen area. In some embodiments, the user sets the MPRT function via a remote control (not shown). Figure 1 The display device 100 includes display settings for various functions such as dynamic screen response time. These display settings correspond to different screen areas, such as main screen or sub-screen. In some embodiments, the first screen area is the main screen. The display device 100 has pre-stored first display settings applicable to the first screen area. These first display settings include whether the dynamic screen response time function is enabled in the first screen area, and the user can adjust the settings by inputting the settings.

[0078] In step S620, the first backlight area corresponding to the first screen area is also determined. Please refer to [link / reference needed]. Figure 2 and Figure 3 For example, the first screen area is the main screen, in... Figure 2 In this context, assuming that sub-screen 230 is located within sub-screen range 290, then main screen 210 is located within main screen range 270 of display screen 200 minus sub-screen range 290. Figure 1 The processor 110 in the middle determines the position based on the main screen range of 270. Figure 3 The backlight area 370 corresponding to the main screen area 270 is the first screen area. As mentioned earlier, in addition to the main screen, multiple sub-screens of different sizes can exist on the display screen at the same time, and the size, position and brightness of multiple sub-screens can be dynamically adjusted by the processor 110. The processor 110 will dynamically determine the corresponding backlight range in real time according to the range of the sub-screen and the main screen, so as to control the backlight unit to provide the required brightness to the corresponding sub-screen or main screen.

[0079] If step S620 determines that the first display setting enables the dynamic screen response time function, proceed to step S650. If step S620 determines that the first display setting does not enable the dynamic screen response time function, proceed to step S640.

[0080] In step S640, the backlight unit within the first backlight area corresponding to the first screen area is set to DC dimming mode. In some embodiments, step S640 is performed by... Figure 1 The processor 110 executes the command. In some embodiments, the processor 110 sets the dimming mode of the backlight unit in the first backlight area to DC dimming, based on whether the dynamic screen response time function in the first display setting is turned off or not turned on. Figure 3 The backlight unit 162B within the backlight area 370 is configured to emit light by direct current and adjust the brightness. In this case, the backlight units within the first backlight area corresponding to the first screen area are all set to DC dimming mode.

[0081] In step S650, the backlight unit within the first backlight area corresponding to the first screen area is set to pulse width modulation (PWM) dimming mode. In some embodiments, step S650 is performed by... Figure 1 The processor 110 executes the process. If it is determined in step S620 that the dynamic screen response time function set in the first display is enabled or not disabled, the processor 110 sets the dimming mode of the backlight unit in the first backlight area to pulse width modulation dimming, for example... Figure 3 The backlight unit 162B within the backlight area 370 is configured to emit light and adjust its brightness using a pulse width modulation signal. In this case, the backlight units within the first backlight area corresponding to the first screen area are all set to pulse width modulation dimming mode.

[0082] In step S660, it is determined whether the Dynamic Picture Response Time (MPRT) function is enabled in the second screen area. In some embodiments, the second screen area is as follows: Figure 2 The sub-screen area 230 shown has a second display setting corresponding to it, which includes a setting value for whether the dynamic screen response time function is enabled in the second screen area. The processor 110 determines whether the dynamic screen response time function is enabled in the second screen area based on the second display setting.

[0083] In step S660, the second backlight area corresponding to the second screen area is also determined. Please refer to [link / reference needed]. Figure 2 and Figure 3 For example, the second screen area is... Figure 2 Sub-screen 230, assuming the range of sub-screen 230 is as follows (sub-screen range 290),... Figure 1The processor 110 determines that the sub-screen area 290 is the second screen area, and determines that the backlight area 390 corresponding to the sub-screen area 290 is the second backlight area. As mentioned above, in addition to the main screen, multiple sub-screens of different sizes can exist on the display screen at the same time, and the processor 110 can dynamically adjust the size, position and brightness of multiple sub-screens. The processor 110 will dynamically determine the corresponding backlight range in real time according to the range of the sub-screen and the main screen, so as to control the backlight unit to provide the required brightness to the corresponding sub-screen or main screen.

[0084] If step S660 determines that the dynamic screen response time function is enabled in the second screen area, proceed to step S690. If step S660 determines that the dynamic screen response time function is not enabled in the second screen area, proceed to step S670.

[0085] In step S670, the backlight unit within the second backlight area corresponding to the second screen area is set to DC dimming mode. In some embodiments, step S670 is performed by... Figure 1 The processor 110 executes this. In some embodiments, the processor 110 sets the dimming mode of the backlight unit in the second backlight area to DC dimming, based on whether the dynamic screen response time function in the second display setting is turned off or not turned on. For example... Figure 3 The backlight unit 162A in the backlight area 380 or 390 is set to emit light by DC power and adjust the brightness. If it is determined in step S660 that the dynamic screen response time function of the second display is turned off or not turned on, the backlight unit in the second backlight area corresponding to the second screen area position will be set to DC dimming mode.

[0086] In step S690, the backlight unit within the second backlight area corresponding to the second screen area is set to pulse width modulation (PWM) dimming mode. In some embodiments, step S690 is performed by... Figure 1 The processor 110 executes the process. If it is determined in step S660 that the dynamic screen response time function of the second display setting is enabled or not disabled, the processor 110 sets the dimming mode of the backlight unit in the second backlight area to pulse width modulation dimming, for example... Figure 3 The backlight unit 162A within the backlight area 380 or 390 is configured to emit light and adjust its brightness using a pulse width modulation signal. In this case, the backlight units within the second backlight area corresponding to the second screen area position are all set to pulse width modulation dimming mode.

[0087] Based on the above, in the implementation of this case, the main screen and the sub-screen can each be subject to different display settings and backlight dimming methods, and different sub-screens can also be subject to different display settings and backlight dimming methods. Furthermore, the processor can dynamically and automatically adjust the range and position of the main screen and the sub-screen, and automatically apply the display settings and backlight dimming settings of the main screen and the sub-screen to the corresponding backlight areas in real time, so that the screen signals of various contents can achieve the best display effect in their respective display screen areas.

[0088] Please see Figure 7 . Figure 7 This is a flowchart illustrating a backlight control signal generation method 700 according to some embodiments of this disclosure. The backlight control signal can be applied to, for example... Figure 1 The display device 100 generates a backlight control signal based on the result of the advanced backlight adjustment method 600, controlling each backlight unit in the backlight module to emit the brightness required for each screen area. Please refer to the following as well. Figure 1 and Figure 7 .

[0089] In step S710, the display device 100 activates or executes the advanced screen mode and local dimming function. In some embodiments, step S710 is performed by... Figure 1 The processor 110 executes according to the screen display settings. In some embodiments, the user can use a remote control (not shown) to set the advanced screen mode and local dimming function of the display device 100 to be enabled. After receiving the input signal from the remote control, the processor 110 enables the advanced screen mode and local dimming function of the display device 100. When the advanced screen mode and local dimming function are enabled, the display device 100 will continuously and repeatedly execute the backlight control signal generation method 700.

[0090] In step S720, the display device receives the image from the image signal source to be displayed. In some embodiments, step S720 is performed by... Figure 1 The processor 110 executes the following. In some embodiments, the processor 110 receives a frame from a partial signal source (not shown) of a continuous picture to be displayed. The signal source received by the processor 110 may also be a compressed continuous picture signal or a streaming media signal. The processor 110 processes these received signals to obtain a continuous picture, then arranges each frame or part of the continuous picture in sequence, and finally performs the subsequent step S730 on all the frames to be displayed.

[0091] In step S730, each frame to be displayed is processed to generate a corresponding brightness matrix. In some embodiments, step S740 is performed by... Figure 1The processor 110 executes the process, receiving one frame from each screen signal source in step S720. The processor 110 processes the frames to be displayed to generate a brightness matrix. In some embodiments, the first screen area is the main screen, and the second screen area is the sub-screen, such as... Figure 1 The processor 110 generates a first brightness matrix based on the brightness value of a frame that needs to be displayed in the main screen signal, and generates a second brightness matrix based on the brightness value of a frame that needs to be displayed in the sub-screen signal.

[0092] In step S740, the relative position of each screen area on the display screen is determined. In some embodiments, step S740 is performed by... Figure 1 The processor 110 executes the process, determining the relative position and size of each screen area to be displayed on the display screen 200. In some embodiments, the first screen area is the main screen, and the second screen area is the sub-screen. The processor 110 determines that the sub-screen 230 is located at a position of 280 or 290 on the display screen 200, and that the main screen 210 is located at a position of 270, excluding the sub-screen 230. The sub-screen can be located anywhere on the display screen, and the display screen is not limited to displaying only one sub-screen or two screen areas simultaneously. Figure 2 This is for illustrative purposes only. In some embodiments, the relative positions of each screen area are represented by the coordinates of the screen area boundaries or corners. After determining the relative positions of each screen area on the display screen, the processor 110 can adjust the size of each frame to be displayed to fit the corresponding screen area, and combine the adjusted frames into a single display frame, wherein the adjusted frames are displayed in the corresponding screen area.

[0093] In step S750, the various brightness matrices are merged to generate a backlight brightness matrix. In some embodiments, step S750 is performed by... Figure 1 The processor 110 executes the operation. In some embodiments, the processor 110 merges the brightness matrices generated in step S730 based on the relative positions of each screen area on the display screen determined in step S740. In some embodiments, the processor 110 adjusts each brightness matrix to the size of the corresponding screen area and combines the screen areas corresponding to the adjusted brightness matrices into a brightness matrix of the display screen. In some embodiments, the first screen area is the main screen 210, the second screen area is the sub-screen 230, and the sub-screen range 290 of the sub-screen 230 corresponds to the... Figure 3In the backlight area 390, the main screen 210 corresponds to the backlight area 370. The processor 110 will adjust the second brightness matrix to correspond to the range of the backlight area 390 and adjust the first brightness matrix to correspond to the range of the backlight area 390. The adjusted first brightness matrix and the second brightness matrix will be merged into the backlight brightness matrix required for a frame of display.

[0094] In step S760, the backlight brightness matrix corresponding to the backlight unit is output. In some embodiments, step S760 is performed by... Figure 1 The processor 110 executes the process. In some embodiments, step S760 controls each backlight unit to generate the brightness required for displaying the image based on the merged backlight brightness matrix input in step S750. In some embodiments, the processor 110 maps the backlight brightness matrix of the display image to the position of each backlight unit in the backlight area, and controls each backlight unit to generate the brightness required for displaying the image. In some embodiments, the processor 110 controls the dimming mode of the backlight unit in the corresponding backlight area according to the display settings of each screen area, such as pulse width modulation or DC signal dimming mode, and controls the backlight unit to emit light with the corresponding dimming signal.

[0095] In step S770, the next frame of the display image is processed. In some embodiments, in step S770, the processor 110 cyclically executes steps S720 to S760 to process the next frame of the display image input from each signal source, continuously generates display images, and controls the backlight unit to generate the brightness required for each frame of the display image.

[0096] In the implementation of this invention, the steps of the backlight control signal generation method 700 are not limited to the above order, and can be interchanged to produce equivalent results. For example, after receiving a frame of the screen to be displayed for each screen area in step S720, step S740 can be executed first to determine the relative position of each screen area on the display screen, and the frame of the screen to be displayed can be merged to generate the display screen. Then, step S730 or S750 can be executed to process the display screen to generate the corresponding brightness matrix. This method does not affect the implementation effect of this invention.

[0097] Please refer back to this. Figure 1 In some embodiments, the display panel 140 is an LCD panel. In some embodiments, the backlight unit 160 of the backlight module 190 is an LED backlight unit. The LED backlight unit 160 may also be divided into multiple LED backlight areas to illuminate multiple display zones of the display panel 140 respectively.

[0098] Please see Figure 8 . Figure 8This is a schematic diagram of another display device 800 illustrated according to some embodiments of the present disclosure. In some embodiments, the display device 800 further includes a timing controller 120, a source driver and a gate driver 130, an LED power management unit 170, and a power switching unit 180. The backlight module 190 includes an LED driving circuit 150 and an LED backlight unit 160.

[0099] Processing unit 110 is coupled to timing controller 120, and outputs screen data to timing controller 120. Timing controller 120 is coupled to processing unit 110, source driver and gate driver 130, and LED driver circuit 150. Timing controller 120 outputs timing control signals to source driver and gate driver 130. Timing controller 120 converts the brightness data corresponding to each display zone of display panel 140 into dimming data, which is then transmitted to LED driver circuit 150. Display panel 140 is coupled to source driver and gate driver 130 and is driven by source driver and gate driver 130 to display screen data.

[0100] LED driver circuit 150 is coupled to timing controller 120 and LED backlight unit 160. In some embodiments, LED driver circuit 150 includes two registers. The first register (which may be called the receiver-stage register) receives the dimming data of the next frame. When triggered by an update flag, the dimming data of the next frame stored in the first register is transferred to the second register (which may be called the output-stage register). LED driver circuit 150 can use the dimming data of the next frame stored in the second register to control the LED current corresponding to each display zone of the LCD.

[0101] The LED backlight unit 160 is coupled to the LED driver circuit 150. The LED backlight unit 160 is driven by the LED driver circuit 150 to provide backlight to the display panel 140. In addition, the LED backlight unit 160 can feed back LED current to the LED driver circuit 150 for current feedback control.

[0102] In summary, this disclosure provides a display device that, firstly, determines the operating mode of the sub-screen; when the sub-screen enters an idle mode, it shrinks the sub-screen and reduces the brightness of the backlight units within the sub-screen area to improve the utilization of the main screen. Secondly, when there is an information notification on the sub-screen, it enlarges the screen, increases the brightness of the backlight units within the sub-screen area, and enters a flashing mode to actively alert the user. Thirdly, for different applications of the main and sub-screens, the display can enable appropriate backlight settings (such as DC dimming or PWM dimming) to provide the user with a better visual experience.

[0103] Various functional components are disclosed herein. To those skilled in the art, functional components and modules can be implemented by circuits (whether dedicated circuits or general-purpose circuits operating under the control of one or more processors and coded instructions). For example, a backlight module can be implemented by a backlight circuit.

[0104] Although this disclosure has been presented above with reference to embodiments, it is not intended to limit this disclosure. Any person skilled in the art may make various modifications and alterations without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the scope defined in the appended claims.

Claims

1. A display device, characterized in that, Include: A display panel used to display a screen; A backlight module is used to provide backlight brightness to the display panel; as well as A processor, coupled to the display panel and the backlight module, is used to generate the display image and determine the backlight brightness corresponding to the display image; The processor is further used to generate multiple display areas in the display screen according to a display setting, and to determine multiple backlight areas in the backlight module corresponding to these display areas; The processor receives or generates multiple screen contents, and determines a working mode of one of the screen contents based on a display setting and a continuous screen of one of the screen contents. Based on the working mode, it determines the size and position of the display areas in the display screen and multiple backlight areas corresponding to the display areas. The processor generates multiple area backlight control signals corresponding to the backlight areas to control the backlight module to provide the backlight brightness.

2. The display device as claimed in claim 1, characterized in that, The processor determines, based on the continuous frames of one of the frame contents, whether the first color value histogram and the second color value histogram are the same or similar within a time interval, in order to determine the working mode of one of the frame contents.

3. The display device as claimed in claim 1, characterized in that, The processor is used to enlarge, shrink, or hide these display areas, and to control multiple backlight areas corresponding to these display areas to increase brightness, decrease brightness, or flicker.

4. A display device, characterized in that, Include: A display panel used to display a screen; A backlight module is used to provide backlight brightness to the display panel; as well as A processor, coupled to the display panel and the backlight module, is used to generate the display image and determine the backlight brightness corresponding to the display image; The processor is further used to receive a continuous image signal and to determine the real-time state of the continuous image signal. The processor determines the working mode of the continuous image signal based on the real-time state of the continuous image signal. When the working mode is not an idle mode, a display area is generated in the display screen to display a first image content of the continuous image signal. The processor determines that a backlight area of ​​the backlight module corresponds to the display area based on the display area, and generates a backlight control signal corresponding to the backlight area based on the first image content. The processor also dynamically and automatically adjusts the range or position of the display area based on the real-time state.

5. The display device as claimed in claim 4, characterized in that, The processor generates a first color value histogram and a second color value histogram based on the continuous image signal within a time interval, and determines the working mode of the continuous image signal based on whether the first color value histogram and the second color value histogram are the same or similar.

6. The display device as claimed in claim 4, characterized in that, When the continuous image signal is in idle mode, the processor shrinks or hides the display area in the display screen.

7. The display device as claimed in claim 4, characterized in that, When the working mode of the continuous image signal is idle mode, the processor generates a backlight control signal that reduces the brightness of the backlight area.

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