Display device and driving method for display device

Abstract

The invention provides a display device and a driving method for the display device. The display device comprises a driving circuit, a backlight driving unit and a display panel. The driving circuit receives a plurality of picture data. The plurality of picture data includes first picture data and second picture data. The display panel receives a plurality of picture display signals of the plurality of picture data. The driving circuit compares the first picture data with the second picture data to generate a comparison result, and provides a backlight brightness adjusting instruction to the backlight driving unit according to the comparison result.

Description

Technical Field

[0001] The present disclosure relates to a display device and a driving method for the display device, and in particular to a display device and a driving method capable of improving the smear phenomenon. Background Art

[0002] The display device will display dynamic images based on multiple screen data. However, if the display device responds too slowly, under the display requirement of high frame rate, the display device will have a ghosting phenomenon in visual effects. The ghosting phenomenon will reduce the viewing experience of users. Therefore, how to improve the ghosting phenomenon of the display device is one of the research focuses of those skilled in the art. Summary of the invention

[0003] The present disclosure is directed to a display device and a driving method capable of improving the smear phenomenon.

[0004] According to an embodiment of the present disclosure, a display device includes a driving circuit, a backlight driving unit, and a display panel. The driving circuit receives a plurality of picture data. The plurality of picture data includes first picture data and second picture data. The backlight driving unit is electrically connected to the driving circuit. The display panel is electrically connected to the driving circuit. The display panel receives a plurality of picture display signals of the plurality of picture data. The driving circuit compares the first picture data with the second picture data to generate a comparison result, and provides a backlight brightness adjustment instruction to the backlight driving unit according to the comparison result.

[0005] According to an embodiment of the present disclosure, a driving method is used for a display device. The display device includes a backlight driving unit and a display panel. The display method includes: receiving a plurality of picture data, wherein the plurality of picture data includes first picture data and second picture data; comparing the first picture data with the second picture data to generate a comparison result; compensating a picture display signal of the second picture data according to the comparison result and generating a backlight brightness adjustment instruction; and providing the picture display signal of the second picture data to the display panel, and providing the backlight brightness adjustment instruction to the backlight driving unit.

[0006] Based on the above, the display device compares the first frame data with the second frame data to generate a comparison result, and provides a backlight brightness adjustment instruction to the backlight driving unit according to the comparison result. In this way, based on the comparison result, the ghosting phenomenon of the display device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of a display device according to an embodiment of the present disclosure;

[0008] Figure 2 is a flow chart of a driving method according to an embodiment of the present disclosure;

[0009] Figure 3 is a schematic diagram of a display device according to an embodiment of the present disclosure;

[0010] Figure 4 is a flow chart of a driving method according to an embodiment of the present disclosure;

[0011] Figure 5 It is a schematic diagram of partitions of a display panel according to an embodiment of the present disclosure.

[0012] Description of Reference Numerals

[0013] 100, 200: Display device

[0014] 110, 210: driving circuit

[0015] 120: Backlight drive unit

[0016] 130: Display panel

[0017] 131: Backlight module

[0018] 132: Display module

[0019] 211: Memory

[0020] 212: Timing controller

[0021] 213: Drive unit

[0022] A(0)~A(8): first partition

[0023] AR(q), AR(q-1): Area of ​​the backlight module

[0024] B(1)~B(8): Second partition

[0025] BR(n-1): first bright area

[0026] BR(n): Second brightest area

[0027] CR: Comparison results

[0028] DI(1)~DI(m): Screen data

[0029] DI(n-1): first screen data

[0030] DI(n): Second screen data

[0031] DT: Distance

[0032] LA1~LA3: First grayscale value difference

[0033] LB1~LB3: Second grayscale value difference

[0034] P(n-1): Part of the first picture data

[0035] P(n): Part of the second picture data

[0036] S100, S200: Driving method

[0037] S110~S140, S210~S280: Steps

[0038] SBL(1)~SBL(p): Luminance signal

[0039] SD(1)~SD(m), SD(n): Screen display signal

[0040] SMB: Backlight brightness adjustment command

[0041] SMD: Display Modulation Command DETAILED DESCRIPTION

[0042] The present disclosure may be understood by reference to the following detailed description in conjunction with the accompanying drawings as described below. It should be noted that for the purpose of clarity and ease of understanding by the reader, the various drawings of the present disclosure illustrate a portion of an electronic device, and certain elements in the various drawings may not be drawn to scale. In addition, the number and size of each device shown in the drawings are merely illustrative and are not intended to limit the scope of the present disclosure.

[0043] Certain terms are used throughout the description and in the following claims to refer to specific elements. As will be appreciated by those skilled in the art, electronic device manufacturers may refer to elements by different names. The present case does not intend to distinguish between elements that differ in name but not in function. In the following description and in the claims, the terms "comprise", "include" and "have" are used in an open manner and should therefore be interpreted as meaning "including but not limited to..." Therefore, when the terms "comprise", "include" and / or "have" are used in the description of the present disclosure, it will indicate the presence of corresponding features, regions, steps, operations and / or elements, but is not limited to the presence of one or more corresponding features, regions, steps, operations and / or elements.

[0044] It should be understood that when an element is referred to as being "coupled to", "connected to" or "conducted to" another element, the element may be directly connected to the other element and an electrical connection may be directly established, or an intermediate element may exist between these elements for relaying the electrical connection (indirect electrical connection). In contrast, when an element is referred to as being "directly coupled to", "directly conductive to" or "directly connected to" another element, there are no intermediate elements.

[0045] Although terms such as first, second, third, etc. can be used to describe different components, such components are not limited by these terms. The terms are only used to distinguish components in the specification from other components. The claims may not use the same terms, but may use the terms first, second, third, etc. relative to the order required for the elements. Therefore, in the following description, the first component may be the second component in the claim.

[0046] The electronic device disclosed herein may include a display device, an antenna device, a sensing device, a light-emitting device, a touch display, a curved display, or a free shape display, but is not limited thereto. The electronic device may include a bendable or flexible electronic device. The electronic device may, for example, include a liquid crystal, a light-emitting diode, a quantum dot (QD), fluorescence, phosphorescence, other suitable display media, or a combination of the above materials, but is not limited thereto. The light-emitting diode may, for example, include an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (miniLED), a micro LED, or a quantum dot light-emitting diode (quantum dot LED, which may include QLED, QDLED), or other suitable materials, or a combination of the above materials, but is not limited thereto. The display device may, for example, include a virtual reality (VR) display device, an augmented reality (AR) display device, a mixed reality (Mixed Reality) display device, or a spliced ​​display device, but is not limited thereto. The antenna device may be, for example, a liquid crystal antenna, but is not limited thereto. The antenna device may, for example, include an antenna splicing device, but is not limited thereto. It should be noted that the electronic device may be any arrangement or combination of the foregoing, but is not limited thereto. In addition, the appearance of the electronic device may be rectangular, circular, polygonal, a shape with curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a drive system, a control system, a light source system, etc. to support the display device, the antenna device, or the splicing device, but the present disclosure is not limited thereto. The sensing device may include a camera or an infrared sensor (infrared sensor) or a fingerprint sensor, etc., and the present disclosure is not limited thereto. In some embodiments, the sensing device may also include a flash, an infrared (IR) light source, other sensors, electronic components, or a combination thereof, but is not limited thereto.

[0047] In the present disclosure, embodiments use "pixel" or "pixel unit" as a unit for describing a specific area including at least one functional circuit for at least one specific function. The area of ​​a "pixel" depends on the unit used to provide a specific function, and adjacent pixels may share the same part or wire, but may also include their own specific part therein. For example, adjacent pixels may share the same scan line or the same data line, but the pixel may also have its own transistor or capacitor.

[0048] It should be noted that the technical features in the different embodiments described below may be replaced, reorganized or mixed with each other to constitute another embodiment without departing from the spirit of the present disclosure.

[0049] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of a display device according to an embodiment of the present disclosure. In this embodiment, the display device 100 includes a driving circuit 110, a backlight driving unit 120 and a display panel 130. In this embodiment, the display device 100 is, for example, a liquid crystal display device. The driving circuit 110 receives picture data DI(1) to DI(m). The picture data DI(1) to DI(m) are picture data of different frame times. The backlight driving unit 120 is electrically connected to the driving circuit 110. The display panel 130 is electrically connected to the driving circuit 110. The display panel 130 receives picture display signals SD(1) to SD(m) of the picture data DI(1) to DI(m). In this embodiment, the picture display signal SD(1) corresponds to the picture data DI(1). The picture display signal SD(2) corresponds to the picture data DI(2). Similarly, the picture display signal SD(m) corresponds to the picture data DI(m).

[0050] In the present embodiment, the driving circuit 110 compares the first picture data DI(n-1) and the second picture data DI(n) among the picture data DI(1) to DI(m) to generate a comparison result CR. "m" is a positive integer greater than "1". "n" is a positive integer greater than "1" and less than or equal to "m". Based on the display timing, the second picture data DI(n) follows the first picture data DI(n-1). In other words, the driving circuit 110 compares two picture data of adjacent timings to generate a comparison result CR. The driving circuit 110 provides a backlight brightness adjustment instruction SMB to the backlight driving unit 120 based on the comparison result CR. In this way, based on the comparison result CR, the ghosting phenomenon of the display device 100 can be improved.

[0051] In this embodiment, the display panel 130 includes a backlight module 131. The backlight module 131 is electrically connected to the backlight driving unit 120. The backlight module 131 includes a plurality of regions. The backlight driving unit 120 generates brightness signals SBL(1) to SBL(p) corresponding to the plurality of regions according to the backlight brightness adjustment instruction SMB. The backlight driving unit 120 provides the brightness signals SBL(1) to SBL(p) to the corresponding plurality of regions, thereby improving the smear phenomenon.

[0052] In this embodiment, the backlight module 131 may be a backlight module with local dimming technology. Each of the plurality of regions includes at least one light emitting unit. The at least one light emitting unit receives a corresponding brightness signal and emits light. In this embodiment, the backlight driving unit 120 is a driving element or circuit for driving the backlight module 131. The light emitting unit may be any type of light emitting diode.

[0053] In one embodiment, the brightness signals SBL(1)-SBL(p) may be voltage signals, respectively. In another embodiment, the brightness signals SBL(1)-SBL(p) may be current signals, respectively.

[0054] In the present embodiment, the driving circuit 110 determines the first bright area BR(n-1) of the first picture data DI(n-1) according to the first grayscale distribution of the first picture data DI(n-1). The driving circuit 110 determines the second bright area BR(n) of the second picture data DI(n) according to the second grayscale distribution of the second picture data DI(n). The driving circuit 110 generates a comparison result CR based on the displacement change between the first bright area BR(n-1) and the second bright area BR(n). The driving circuit 110 determines the comparison result CR to determine whether to adjust (or compensate) the operation of the backlight driving unit 120. In the present embodiment, the first bright area BR(n-1) and the second bright area BR(n) are respectively high brightness display areas or high grayscale value areas in adjacent timings.

[0055] For example, based on the comparison result CR, when the driving circuit 110 determines that the displacement change between the first bright area BR(n-1) and the second bright area BR(n) may cause a smear phenomenon, this means that when the area corresponding to the second bright area BR(n) has a high brightness or a high grayscale value, the area corresponding to the first bright area BR(n-1) still has a high brightness or a high grayscale value. Therefore, the driving circuit 110 provides a backlight brightness adjustment instruction SMB to the backlight driving unit 120. The backlight driving unit 120 adjusts the operation of the backlight driving unit 120 according to the backlight brightness adjustment instruction SMB, thereby improving the smear phenomenon.

[0056] For example, the first bright area BR(n-1) is located in the area AR(q-1) of the backlight module 131. The second bright area BR(n) is located in the area AR(q) of the backlight module 131. In other words, the bright area moves from the area AR(q-1) to the area AR(q). The backlight brightness adjustment instruction SMB instructs the backlight module 131 to further reduce the luminance of the area AR(q-1) (e.g., reduce the voltage value or current value of the brightness signal SBL(q-1)) and further increase the luminance of the area AR(q) (e.g., increase the voltage value or current value of the brightness signal SBL(q)).

[0057] On the other hand, when the driving circuit 110 determines that the displacement change between the first bright area BR(n-1) and the second bright area BR(n) does not cause the smear phenomenon, the driving circuit 110 stops providing the backlight brightness adjustment command SMB. Therefore, the backlight driving unit 120 maintains normal operation.

[0058] Furthermore, in some embodiments, the driving circuit 110 may also provide picture display signals SD( 1 )-SD(m) to the display panel 130 according to the comparison result CR.

[0059] The display panel 130 includes a display module 132. The display module 132 is, for example, a liquid crystal display module. The display module 132 is electrically connected to the driving circuit 110. For example, when the driving circuit 110 determines that the displacement change between the first bright area BR(n-1) and the second bright area BR(n) may cause a smear phenomenon, the driving circuit 110 adjusts (or compensates) at least one display data of the screen display signal SD(n). Therefore, the grayscale value corresponding to the first bright area BR(n-1) in the display module 132 is further reduced. The grayscale value corresponding to the second bright area BR(n) in the display module 132 is further increased.

[0060] On the other hand, when the driving circuit 110 determines that the displacement change between the first bright area BR(n-1) and the second bright area BR(n) will not cause the ghosting phenomenon, the driving circuit 110 does not adjust the image display signal SD(n).

[0061] Please also refer to Figure 1 as well as Figure 2 , Figure 2 1 is a flow chart of a driving method according to an embodiment of the present disclosure. In this embodiment, the driving method S100 is used for the display device 100. The driving method S100 includes steps S110 to S140. In step S110, the driving circuit 110 receives the picture data DI(1) to DI(m). In step S120, the driving circuit 110 compares the first picture data DI(n-1) and the second picture data DI(n) among the picture data DI(1) to DI(m) to generate a comparison result CR.

[0062] In step S130, the driving circuit 110 generates a backlight brightness adjustment command SMB according to the comparison result CR, and provides the backlight brightness adjustment command SMB to the backlight driving unit 120. In step S140, the driving circuit 110 provides the screen display signal SD(n) of the second screen data DI(n) to the display panel 130. Among them, step S130 and step S140 may, for example, have no order. In some embodiments, the driving circuit 110 may also adjust the screen display signal SD(n) of the second screen data DI(n) according to the comparison result CR, and provide the adjusted screen display signal SD(n) to the display panel 130.

[0063] The implementation details of steps S110 to S140 are already in Figure 1 The invention is described in detail in the embodiments of the present invention, so it will not be repeated here.

[0064] Through the disclosed configuration architecture and driving method, even if the user watches the image of the display panel at a close distance and / or has a demand for high resolution of the display panel, the ghosting phenomenon of the display device can still be improved. For example, the display device of the present case includes a virtual reality display device, an augmented reality display device, a mixed reality display device, and other suitable display devices. Please refer to Figure 3 , Figure 3 2 is a schematic diagram of a display device according to an embodiment of the present disclosure. In this embodiment, the display device 200 includes a driving circuit 210, a backlight driving unit 120, and a display panel 130. The implementation details of the backlight driving unit 120 and the display panel 130 have been described in detail. Figure 1 The embodiments of the present invention are described in detail in the embodiments of the present invention, so they will not be repeated here. In the present embodiment, the driving circuit 210 includes a memory 211, a timing controller 212 and a driving unit 213. The memory 211 stores the screen data DI(1)~DI(m). The driving circuit 210 stores the received screen data DI(1)~DI(m) in the memory 211. In the present embodiment, the memory 211 can be implemented by a data storage circuit known to those skilled in the art. In some embodiments, the memory 211 can be set in the timing controller 212.

[0065] The timing controller 212 is electrically connected to the backlight driving unit 120 and the memory 211. In the present embodiment, the timing controller 212 compares the first screen data DI(n-1) with the second screen data DI(n) to generate a comparison result CR, and is used to provide a backlight brightness adjustment instruction SMB. In other words, the timing controller 212 provides the backlight brightness adjustment instruction SMB according to the comparison result CR. In addition, the timing controller 212 can also provide a display adjustment instruction SMD. In some embodiments, the timing controller 212 can provide a display adjustment instruction SMD according to the comparison result CR.

[0066] The driving unit 213 is electrically connected to the timing controller 212. The driving unit 213 receives the display adjustment command SMD provided by the timing controller 212, and provides a screen display signal SD(n) of the second screen data DI(n) to the display panel 130 according to the display adjustment command SMD. The driving unit 213 includes at least one of a source driver and a gate driver.

[0067] For example, based on the comparison result CR, when the timing controller 212 determines that the displacement change between the first bright area BR(n-1) and the second bright area BR(n) may cause the ghosting phenomenon, the timing controller 212 provides the backlight brightness adjustment instruction SMB to the backlight driving unit 120, and provides the display adjustment instruction SMD to the driving unit 213. The backlight driving unit 120 adjusts the luminous brightness of the areas AR(q-1) and AR(q) of the backlight driving unit 120 according to the backlight brightness adjustment instruction SMB. The driving unit 213 adjusts the screen display signal SD(n) of the second screen data DI(n) according to the display adjustment instruction SMD. Therefore, the ghosting phenomenon is improved.

[0068] Please also refer to Figure 1 , Figure 4 as well as Figure 5 , Figure 4 is a flow chart of a driving method according to an embodiment of the present disclosure. Figure 51 is a schematic diagram of the partitioning of a display panel according to an embodiment of the present disclosure. In this embodiment, the driving method S200 is used for the display device 100. The driving method S200 includes steps S210 to S280. In step S210, the driving circuit 110 receives the picture data DI(1) to DI(m) and stores the picture data DI(1) to DI(m). In step S220, the driving circuit 110 determines whether the first picture data DI(n-1) and the second picture data DI(n) are the same. When the first picture data DI(n-1) and the second picture data DI(n) are the same, this means that the pictures of the first picture data DI(n-1) and the second picture data DI(n) are static. The ghosting phenomenon does not occur. Therefore, the driving circuit 110 maintains the second picture data DI(n) and maintains the operation of the backlight driving unit 120 in step S270. Therefore, the brightness signal SBL(1) to SBL(p) and the picture display signal SD(n) are not adjusted or compensated.

[0069] On the other hand, when the first screen data DI(n-1) and the second screen data DI(n) are not the same, the driving circuit 110 divides the first screen data DI(n-1) into a plurality of first partitions and divides the second screen data DI(n) into a plurality of second partitions in step S230. The driving circuit 110 obtains a plurality of first grayscale value differences between any two adjacent first partitions A(0) to A(8), and obtains a plurality of second grayscale value differences between any two adjacent second partitions B(1) to B(8). Each first partition and each second partition may correspond to a plurality of pixels, respectively. In some embodiments, the number of pixels corresponding to the first partition A(0) may be different from the number of pixels corresponding to the first partition A(1), but is not limited thereto. In other embodiments, the number of pixels corresponding to each first partition or each second partition is the same.

[0070] In step S230, the driving circuit 110 divides a portion P(n-1) of the first screen data DI(n-1) into first partitions A(0) to A(8), and divides a portion P(n) of the second screen data DI(n) into second partitions B(0) to B(8). The number of partitions and the partitioning method disclosed herein are not limited thereto. In this embodiment, the first partition A(0) is the central partition. Any of the first partitions A(1) to A(8) is adjacent to the first partition A(0). The second partition B(0) is the central partition. Any of the second partitions B(1) to B(8) is adjacent to the first partition B(0). In other words, the adjacent in the disclosure may be, for example, horizontally adjacent, vertically adjacent, or obliquely adjacent. The driving circuit 110 subtracts the grayscale values ​​of any two adjacent first partitions and takes the absolute value to generate multiple first grayscale value differences. For example, the driving circuit 110 subtracts the grayscale value of the first partition A(2) from the grayscale value of the first partition A(1) and takes the absolute value to generate a first grayscale value difference LA1. The driving circuit 110 subtracts the grayscale value of the first partition A(4) from the grayscale value of the first partition A(1) and takes the absolute value to generate a first grayscale value difference LA2. The driving circuit 110 subtracts the grayscale value of the first partition A(0) from the grayscale value of the first partition A(1) and takes the absolute value to generate a first grayscale value difference LA3. Similarly, the driving circuit 110 can generate multiple first grayscale value differences LA in this way, which is not described in detail here. The first grayscale value can be, for example, the average value of multiple grayscale values ​​generated by multiple pixels corresponding to the first partition.

[0071] The driving circuit 110 will subtract the grayscale values ​​of any two adjacent second partitions B(0) and take the absolute value to generate a plurality of second grayscale value differences. For example, the driving circuit 110 will subtract the grayscale value of the second partition B(2) from the grayscale value located in the second partition B(1) and take the absolute value to generate a second grayscale value difference LB1. The driving circuit 110 will subtract the grayscale value of the second partition B(4) from the grayscale value located in the second partition B(1) and take the absolute value to generate a second grayscale value difference LB2. The driving circuit 110 will subtract the grayscale value of the second partition B(0) from the grayscale value located in the second partition B(1) and take the absolute value to generate a second grayscale value difference LB3. Similarly, the driving circuit 110 can generate a plurality of second grayscale value differences in this manner, which will not be described in detail herein. The second grayscale value may, for example, be the average value of a plurality of grayscale values ​​generated by a plurality of pixels corresponding to the second partition.

[0072] In step S240, the driving circuit 110 determines whether the first grayscale value differences and the second grayscale value differences are greater than or equal to the difference threshold. When the first grayscale value differences are all less than the difference threshold and / or the second grayscale value differences are all less than the difference threshold, it means that part P(n-1) of the first picture data DI(n-1) and / or part P(n) of the second picture data DI(n) have no bright area at all. Therefore, the driving circuit 110 maintains the second picture data DI(n) and maintains the operation of the backlight driving unit 120 in step S270. Therefore, the brightness signals SBL(1)~SBL(p) and the picture display signal SD(n) are not adjusted or compensated.

[0073] On the other hand, when at least one of the plurality of first grayscale value differences is greater than the difference threshold, and at least one of the plurality of second grayscale value differences is greater than the difference threshold, it means that the portion P(n-1) of the first picture data DI(n-1) and the portion P(n) of the second picture data DI(n) both have at least one bright area. Therefore, the driving circuit 110 selects the first maximum grayscale value difference among the plurality of first grayscale value differences and the second maximum grayscale value difference among the second grayscale value differences in step S250.

[0074] For example, if the first grayscale value difference LA1 is the first maximum grayscale value difference, and the grayscale value of the first partition A(1) is greater than the grayscale value of the first partition A(0), this indicates that the first bright area BR(n-1) of the first picture data DI(n-1) is located in the first partition A(1). For example, if the second grayscale value difference LB1 is the second maximum grayscale value difference, and the grayscale value of the second partition B(1) is greater than the grayscale value of the second partition B(0), this indicates that the second bright area BR(n) of the second picture data DI(n) is located in the second partition B(1).

[0075] In step S260, the driving circuit 110 determines whether the distance DT between the first position corresponding to the first maximum grayscale value difference (e.g., the first bright area BR(n-1)) and the second position corresponding to the second maximum grayscale value difference (e.g., the second bright area BR(n)) is within a set range. When the distance DT is outside the set range, it means that the distance DT between the first position and the second position is large. Therefore, in terms of visual effect, the first bright area BR(n-1) and the second bright area BR(n) are not related. Therefore, the ghosting phenomenon does not occur. The driving circuit 110 maintains the second picture data DI(n) and maintains the operation of the backlight driving unit 120 in step S270. Therefore, the brightness signals SBL(1)~SBL(p) and the picture display signal SD(n) are not adjusted or compensated.

[0076] On the other hand, when the distance DT is within the set range, it means that the distance DT between the first position and the second position is small. Therefore, in terms of visual effect, the first bright area BR(n-1) moves to the second bright area BR(n). Therefore, the smear phenomenon may occur. The driving circuit 110 adjusts (or compensates) the operation of the backlight module 131 and / or adjusts the picture display signal SD(n) of the second picture data DI(n) in step S280.

[0077] In this embodiment, the driving circuit 110 provides the backlight brightness adjustment command SMB to the backlight driving unit 120 in step S280. The backlight driving unit 120 adjusts the operation of the backlight module 131 according to the backlight brightness adjustment command SMB. The detailed operation of the backlight module 131 to improve the smear phenomenon has been described in detail. Figure 1 This is illustrated in the embodiments of the present invention, so it will not be repeated here.

[0078] In this embodiment, the display panel 130 may also adjust at least one display data of the image display signal SD(n) in step S280 to improve the ghosting phenomenon. The detailed operation of the display module 132 to improve the ghosting phenomenon has been described in detail. Figure 1 This is illustrated in the embodiments of the present invention, so it will not be repeated here.

[0079] In summary, the display device compares the first image data with the second image data to generate a comparison result, and provides a backlight brightness adjustment instruction to the backlight driving unit according to the comparison result. In this way, based on the comparison result, the ghosting phenomenon of the display device can be improved. In some embodiments, the second image data can also be adjusted according to the comparison result.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A display device, characterized in that: The display device comprises: A driving circuit configured to receive a plurality of picture data, wherein the plurality of picture data includes first picture data and second picture data; a backlight driving unit, electrically connected to the driving circuit; and A display panel, electrically connected to the driving circuit, configured to receive a plurality of picture display signals of the plurality of picture data; The driving circuit compares the first picture data with the second picture data to generate a comparison result, and provides a backlight brightness adjustment instruction to the backlight driving unit according to the comparison result.

2. The display device according to claim 1, characterized in that The driving circuit determines a first bright area of ​​the first picture data according to a first grayscale distribution of the first picture data, determines a second bright area of ​​the second picture data according to a second grayscale distribution of the second picture data, and generates the comparison result according to a displacement change between the first bright area and the second bright area.

3. The display device according to claim 1, characterized in that The display panel comprises: A backlight module is electrically connected to the backlight driving unit. The backlight module includes a plurality of regions. The backlight driving unit generates a plurality of brightness signals corresponding to the plurality of regions according to the backlight brightness adjustment instruction, and provides the plurality of brightness signals to the corresponding plurality of regions.

4. The display device according to claim 3, characterized in that Each of the plurality of regions comprises: At least one light emitting unit is configured to receive a corresponding brightness signal.

5. The display device according to claim 3, characterized in that: The plurality of brightness signals are respectively voltage signals.

6. The display device according to claim 3, characterized in that: The plurality of brightness signals are current signals, respectively.

7. The display device according to claim 1, characterized in that: The driving circuit provides the plurality of picture display signals to the display panel according to the comparison result.

8. The display device according to claim 1, characterized in that: The driving circuit comprises: The memory is configured to store the plurality of picture data.

9. The display device according to claim 1, characterized in that: The driving circuit comprises: a timing controller configured to compare the first picture data with the second picture data to generate a comparison result, and provide the backlight brightness adjustment instruction according to the comparison result; and The driving unit is electrically connected to the timing controller and is configured to receive a display adjustment instruction provided by the timing controller and provide the plurality of picture display signals to the display panel according to the display adjustment instruction.

10. The display device according to claim 9, characterized in that: The driving unit includes at least one of a source driver and a gate driver.

11. A driving method for a display device, characterized in that: The display device comprises a backlight driving unit and a display panel, wherein the driving method comprises: Receiving a plurality of picture data, wherein the plurality of picture data comprises first picture data and second picture data; comparing the first frame data with the second frame data to generate a comparison result; generating a backlight brightness adjustment instruction according to the comparison result, and providing the backlight brightness adjustment instruction to the backlight driving unit; and A picture display signal of the second picture data is provided to the display panel.

Images