Three-dimensional display method and display device

Abstract

The embodiment of the invention provides a three-dimensional display method and display equipment, relates to the technical field of display, improves the crosstalk problem during three-dimensional display, and improves the film watching experience of a user. According to the specific scheme, the three-dimensional display method is applied to the display equipment, the display equipment comprises a display panel, and the mapping relation between the gray scale and the luminance of the display panel in a two-dimensional display mode conforms to a first gamma curve. The three-dimensional display method comprises the steps that a display device is switched from a two-dimensional display mode to a three-dimensional display mode, the display device obtains the gray scale of an image of a current frame in the three-dimensional display mode, the display device transmits gamma voltage matched with the gray scale to a display panel, and the display panel is driven to emit light. Wherein the mapping relation between the gray scale and the luminance of the display panel in the three-dimensional display mode accords with a second gamma curve. The embodiment of the invention is used for a three-dimensional display process.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a three-dimensional display method and display device. Background Technology

[0002] Liquid crystal displays (LCDs) are widely used in various electronic products. Most LCDs are backlit, typically consisting of a display panel and a backlight module. Three-dimensional (3D) display technology has become one of the important technologies for LCDs. The more common 3D display technologies are polarized 3D and shutter 3D. Among them, shutter 3D technology has become a mainstream technology because it does not require a polarizing film to be bonded to the display panel.

[0003] In shutter-based 3D technology, in order to reduce the afterimage effect when switching images on the display panel, the backlight light-emitting diode (LED) lamps can be temporarily turned off. This allows the images of the left and right eyes to be displayed alternately, so that the images of the right and left eyes are not mixed in the 3D display.

[0004] However, due to the long response time of the liquid crystal in the display panel (i.e., the response time from gray to gray (GTG), the liquid crystal deflection corresponding to the gray level in a frame cannot be flipped to the preset angle, resulting in crosstalk, that is, the phenomenon of the left eye and the right eye being mixed, which seriously affects the user's viewing experience. Summary of the Invention

[0005] This application provides a 3D display method and display device, which improves the crosstalk problem in 3D display and enhances the user's viewing experience.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions.

[0007] In a first aspect, embodiments of this application provide a three-dimensional display method. This method is applied to a display device, which includes a display panel. The mapping relationship between grayscale and luminance of the display panel in a two-dimensional display mode conforms to a first gamma curve. The three-dimensional display method includes: the display device switching from a two-dimensional display mode to a three-dimensional display mode; the display device acquiring the grayscale of an image of the current frame in the three-dimensional display mode; and the display device supplying a gamma voltage matching the grayscale to the display panel to drive the display panel to emit light. The mapping relationship between grayscale and luminance of the display panel in the three-dimensional display mode conforms to a second gamma curve.

[0008] Therefore, the three-dimensional display method provided in this application adopts a second gamma curve that is different from the first gamma curve in the two-dimensional display mode. That is, the correspondence between grayscale and gamma voltage in the three-dimensional display mode is different from that in the two-dimensional display mode. For example, the gamma voltage corresponding to the second lowest grayscale in the three-dimensional display mode is lower, and / or the gamma voltage corresponding to the second highest grayscale in the three-dimensional display mode is higher. This can reduce the liquid crystal response time, that is, the grayscale can be quickly switched to the set value, thereby improving the crosstalk problem in three-dimensional display and improving the user's viewing experience.

[0009] In one possible design, the luminance corresponding to the first grayscale range under the second gamma curve is higher than that corresponding to the first grayscale range under the first gamma curve; and / or, the luminance corresponding to the second grayscale range under the second gamma curve is lower than that corresponding to the second grayscale range under the first gamma curve. Therefore, in 3D display mode, the gamma voltage corresponding to the first grayscale range is lower, and / or the gamma voltage corresponding to the second grayscale range is higher, which can reduce the liquid crystal response time, improve crosstalk issues in 3D display, and enhance the user's viewing experience.

[0010] In one possible design, the display device further includes a backlight unit. In two-dimensional display mode, the mapping relationship between the driving current and luminance of the backlight unit conforms to a first mapping curve. The method further includes: the display device acquiring backlight data of the current frame image; and the display device supplying a driving current to the backlight unit based on the backlight data to drive the backlight unit to emit light. In three-dimensional display mode, the mapping relationship between the driving current and luminance of the backlight unit conforms to a second mapping curve. Therefore, the three-dimensional display method provided in this application, by adjusting the driving current of the backlight unit, can compensate for the contrast loss caused by using the second gamma curve, thereby improving the contrast of the display panel and the user's viewing experience.

[0011] In one possible design, the luminance corresponding to the third grayscale range in the 3D display mode is lower than that in the 2D display mode; and / or, the luminance corresponding to the fourth grayscale range in the 3D display mode is higher than that in the 2D display mode. Therefore, in the 3D display mode, reducing the driving current of the third grayscale range (i.e., lower luminance corresponding to the third grayscale range) and / or increasing the driving current of the fourth grayscale range (i.e., higher luminance corresponding to the fourth grayscale range) can compensate for the contrast loss caused by using the second gamma curve, thereby improving the contrast of the display panel and the user's viewing experience.

[0012] In one possible design, when the luminance corresponding to the first grayscale interval under the second gamma curve is higher than that corresponding to the first grayscale interval under the first gamma curve, the luminance corresponding to the third grayscale interval in the 3D display mode is lower than that corresponding to the third grayscale interval in the 2D display mode; and / or, when the luminance corresponding to the second grayscale interval under the second gamma curve is lower than that corresponding to the second grayscale interval under the first gamma curve, the luminance corresponding to the fourth grayscale interval in the 3D display mode is higher than that corresponding to the fourth grayscale interval in the 2D display mode. Therefore, in the 3D display mode, the first and third grayscale intervals can be the same; when the luminance corresponding to the first grayscale interval is brighter, the luminance corresponding to the third grayscale interval is darker. Similarly, the second and fourth grayscale intervals can be the same; when the luminance corresponding to the second grayscale interval is darker, the luminance corresponding to the fourth grayscale interval is brighter. This can compensate for contrast loss while improving 3D display crosstalk, thereby enhancing the contrast of the display panel and the user's viewing experience.

[0013] In one possible design, the first grayscale range is a low grayscale range, the second grayscale range is a high grayscale range, the third grayscale range is a low grayscale range, and the fourth grayscale range is a high grayscale range. The low grayscale range can be the portion of the grayscale mapping range in the second gamma curve with smaller grayscale values, and the high grayscale range can be the portion of the grayscale mapping range in the second gamma curve with larger grayscale values.

[0014] In one possible design, the minimum grayscale value of the 3D display mode is greater than the minimum grayscale value of the 2D display mode; and / or, the maximum grayscale value of the 3D display mode is less than the maximum grayscale value of the 2D display mode. Therefore, in the 3D display method provided in this application embodiment, while keeping the gamma voltage range constant, reducing the grayscale mapping range can result in higher gamma voltages corresponding to higher grayscale levels, and / or lower gamma voltages corresponding to lower grayscale levels, thereby reducing the liquid crystal response time, improving crosstalk issues in 3D display, and enhancing the user's viewing experience.

[0015] In one possible design, the grayscale mapping range of the 3D display mode is within the grayscale mapping range of the 2D display mode. Alternatively, the gamma voltage mapping range of the 2D display mode is within the gamma voltage mapping range of the 3D display mode. Therefore, the 3D display method provided in this application can either reduce the grayscale mapping range or increase the gamma voltage mapping range. Increasing the gamma voltage mapping range can increase the electric field force applied to the liquid crystal molecules, reducing the liquid crystal response time, thereby improving crosstalk issues in 3D display and enhancing the user's viewing experience.

[0016] Secondly, embodiments of this application provide a display device, comprising: a processor, an image unit, and a display panel. The processor is used to switch from a two-dimensional display mode to a three-dimensional display mode, wherein the grayscale and brightness mapping relationship of the display panel in the two-dimensional display mode conforms to a first gamma curve. The image unit is used to acquire the grayscale of the current frame image in the three-dimensional display mode, and the image unit is also used to supply a gamma voltage matching the grayscale to the display panel to drive the display panel to emit light. The grayscale and brightness mapping relationship of the display panel in the three-dimensional display mode conforms to a second gamma curve.

[0017] In one possible design, the luminance corresponding to the first grayscale range under the second gamma curve is higher than the luminance corresponding to the first grayscale range under the first gamma curve; and / or, the luminance corresponding to the second grayscale range under the second gamma curve is lower than the luminance corresponding to the second grayscale range under the first gamma curve.

[0018] In one possible design, the display device further includes a backlight unit, where the mapping relationship between the driving current and brightness of the backlight unit in two-dimensional display mode conforms to a first mapping curve. The image unit is used to acquire backlight data of the current frame image, and also to supply driving current to the backlight unit based on the backlight data, driving the backlight unit to emit light. In three-dimensional display mode, the mapping relationship between the driving current and brightness of the backlight unit conforms to a second mapping curve.

[0019] In one possible design, the luminance corresponding to the third grayscale range in the three-dimensional display mode is lower than the luminance corresponding to the third grayscale range in the two-dimensional display mode; and / or, the luminance corresponding to the fourth grayscale range in the three-dimensional display mode is higher than the luminance corresponding to the fourth grayscale range in the two-dimensional display mode.

[0020] In one possible design, when the luminance corresponding to the first grayscale interval under the second gamma curve is higher than the luminance corresponding to the first grayscale interval under the first gamma curve, the luminance corresponding to the third grayscale interval in the three-dimensional display mode is lower than the luminance corresponding to the third grayscale interval in the two-dimensional display mode; and / or, when the luminance corresponding to the second grayscale interval under the second gamma curve is lower than the luminance corresponding to the second grayscale interval under the first gamma curve, the luminance corresponding to the fourth grayscale interval in the three-dimensional display mode is higher than the luminance corresponding to the fourth grayscale interval in the two-dimensional display mode.

[0021] In one possible design, the first grayscale range is a low grayscale range, the second grayscale range is a high grayscale range, the third grayscale range is a low grayscale range, and the fourth grayscale range is a high grayscale range.

[0022] In one possible design, the minimum grayscale value of the 3D display mode is greater than the minimum grayscale value of the 2D display mode; and / or, the maximum grayscale value of the 3D display mode is less than the maximum grayscale value of the 2D display mode.

[0023] In one possible design, the grayscale mapping range of the 3D display mode is within the grayscale mapping range of the 2D display mode. Alternatively, the gamma voltage mapping range of the 2D display mode is within the gamma voltage mapping range of the 3D display mode.

[0024] Optionally, the functions jointly performed by the processor and the image unit can, in some designs, be performed independently by the central processing unit or the image processing unit.

[0025] For the benefits of the second aspect, please refer to the explanation of the first aspect.

[0026] Thirdly, embodiments of this application provide a computer-readable storage medium including computer instructions that, when executed on an electronic device, cause the electronic device to perform the three-dimensional display method in any of the above aspects and any possible implementations.

[0027] Fourthly, embodiments of this application provide a computer program product that, when run on a computer or processor, causes the computer or processor to execute the three-dimensional display method in any of the above aspects and any possible implementations.

[0028] Fifthly, embodiments of this application provide a chip or chip system that, when operated on an electronic device, causes the electronic device to execute the three-dimensional display method in any of the above aspects and any possible implementations. The chip may be, for example, a central processing unit (CPU) or a graphics processing unit (GPU), and the chip system may be, for example, multiple chips working together to implement the corresponding method, such as a CPU and a GPU.

[0029] It is understood that any of the display devices, computer-readable storage media, or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0030] These or other aspects of this application will become more readily apparent in the following description. Attached Figure Description

[0031] Figure 1 A structural diagram of a liquid crystal display provided in an embodiment of this application;

[0032] Figure 2 A timing diagram of a display panel and a backlight unit provided for an embodiment of this application;

[0033] Figure 3 A flowchart illustrating a three-dimensional display method provided in this application embodiment;

[0034] Figure 4 A schematic diagram of a first gamma curve and a second gamma curve provided for embodiments of this application;

[0035] Figure 5 A comparison diagram of grayscale mapping ranges provided for embodiments of this application;

[0036] Figure 6 A schematic diagram illustrating the initial position of the second lowest grayscale level provided in an embodiment of this application;

[0037] Figure 7 A schematic diagram illustrating the initial position of a second-highest grayscale level, provided in an embodiment of this application;

[0038] Figure 8 A comparison diagram of another grayscale mapping range provided for an embodiment of this application;

[0039] Figure 9 A schematic diagram of a first gamma curve and a third gamma curve provided for embodiments of this application;

[0040] Figure 10 A flowchart illustrating another three-dimensional display method provided in this application embodiment;

[0041] Figure 11 This is a schematic diagram of the composition of a three-dimensional display system provided in an embodiment of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0043] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this embodiment, unless otherwise stated, "a plurality of" means two or more.

[0044] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0045] Shutter-based 3D technology is a stereoscopic display technology that rapidly alternates between the left and right eye pixel units, merging the image seen by the left eye in the previous (or next) frame with the image seen by the right eye in the next (or previous) frame, thus achieving 3D display of a single image. Shutter-based 3D technology works based on the human eye's image refresh rate. Specifically, by increasing the image refresh rate (at least 120 Hz), both the left and right eyes refresh the image rapidly at a frequency of 60 Hz, so the user does not perceive image jitter. Furthermore, it maintains the same frame rate as 2D images, allowing the user to see rapidly switching different scenes, achieving 3D stereoscopic imaging.

[0046] Assuming the display panel displays 3D at a refresh rate of 120Hz, such as Figure 1 As shown, Figure 1 The diagram illustrates the segmentation of the display panel and backlight unit in a liquid crystal display (LCD). The display panel can include 2160 rows of pixel units, which can be divided into multiple sections. Correspondingly, the backlight unit can also be divided into multiple sections, with each section corresponding to a segment of the display panel. Specifically, the system-on-chip (SoC) cyclically sends left and right frame images to the display panel at a refresh rate of 120Hz, with each frame displaying for approximately 8.3ms. During the display of each frame, each section of the backlight unit sequentially activates to provide light to the display panel, with each section activating for approximately 1ms. The display panel then sequentially displays the images across each section.

[0047] Different frames of an image have different grayscale levels, and the grayscale level changes when the left and right frames switch. Grayscale refers to the different levels of brightness between the darkest and brightest areas. For example, an 8-bit display panel can have 256 brightness levels, or 256 grayscale levels. Figure 2 As shown, Figure 2 It shows Figure 1The timing diagram for the display panel and backlight unit is shown below. Assume the display panel is divided into 6 segments, such as display panel s1 to display panel s6, and the backlight unit is also divided into 6 segments, such as backlight unit s1 to backlight unit s6. The segments of the backlight unit correspond one-to-one with the segments of the display panel. The vertical synchronization signal (Vsync) indicates that the image is transmitted in a "left frame-right frame-left frame" manner. Taking the display panel s1 displaying the left frame image as an example, the left frame image switch is on, and the backlight unit s1 is also on to provide light to the display panel s1. At this time, the grayscale of the display panel s1 begins to switch when the right frame image is displayed, and switches to the set grayscale when the left frame image is displayed, thus completing the 3D display of the left frame image.

[0048] However, for shutter-based 3D technology on LCD monitors, assuming the previous frame's grayscale is 180 and the current frame's grayscale is 100, during the grayscale transition, due to the fast frame rate and slow LCD response time, the actual brightness corresponding to grayscale 100 in the current frame may not have decreased to the ideal brightness corresponding to grayscale 100. If the actual brightness of grayscale 100 at this point is equivalent to the ideal brightness of grayscale 120, then the image actually seen by the user will exhibit crosstalk and ghosting—that is, the left eye sees the image of the right eye, or the right eye sees the image of the left eye. This severely affects the display panel's display effect.

[0049] To reduce the impact of crosstalk, one possible implementation is to replace the liquid crystal material, for example, by using a liquid crystal material with a low viscosity coefficient. However, this approach increases the cost of the liquid crystal material, thereby increasing the cost of the display panel. Another possible implementation is to adjust the cell gap process parameters, for example, by reducing the cell gap to decrease the cell thickness. However, this approach results in a loss of transmittance and contrast, and also leads to insufficient flexibility and insufficient liquid crystal margin, increasing the risk of low-temperature bubbles and high-temperature mura. Furthermore, adjusting the power supply, one-drop filling (ODF), and black matrix (BM) process parameters all reduce production yield.

[0050] Therefore, this application provides a three-dimensional display method that employs a second gamma curve different from the first gamma curve in the two-dimensional display mode. Specifically, the correspondence between grayscale and gamma voltage in the three-dimensional display mode differs from that in the two-dimensional display mode. For example, the gamma voltage corresponding to the second lowest grayscale in the three-dimensional display mode is lower, and / or the gamma voltage corresponding to the second highest grayscale in the three-dimensional display mode is higher. This reduces the liquid crystal response time, allowing for rapid switching of grayscale to a set value, thereby improving crosstalk issues in three-dimensional display and enhancing the user's viewing experience.

[0051] In the above scenario, the three-dimensional display method provided in this application embodiment can be applied to a display device, which may include a processor, an image unit, and a display panel.

[0052] The processor can be a system-on-a-chip (SoC) or a central processing unit (CPU). It can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0053] The image unit, also known as a timing controller (TCON) board or screen driver board, may include a power management unit (PMU), gamma circuitry, and level shifting circuitry. The PMU can provide various voltages, such as digital voltage (DVDD) or analog voltage (AVDD). The gamma circuitry may include a series of resistors to implement various gamma voltages corresponding to different gray levels. The level shifting circuitry can switch the input signal from one voltage domain to another to dynamically adjust the power supply voltage according to the needs of the 3D display system, ensuring that all components operate under stable voltage. It is understood that the image unit may also include other modules, such as a low-voltage differential signaling (LVDS) interface; however, this embodiment does not limit this.

[0054] For example, the mapping relationship between grayscale and luminance of the display panel in two-dimensional display mode conforms to a first gamma curve, which can be a standard luminance response curve. In one possible example, gamma is a parameter used to characterize the luminance response characteristics of the display panel. The first gamma curve is a curve of grayscale and luminance. If the first gamma curve is normalized, a curve very close to the exponential function curve y = x^2.2 can be obtained. Then, the first gamma curve of the display panel can be expressed by an exponential function as: y = x^r, where r is the gamma voltage.

[0055] Typically, a gamma voltage of 2.2 is suitable for the user's visual characteristics. If the gamma voltage is too high, the overall image will appear darker, and details in dark scenes will be easily lost; if the gamma voltage is too high, the overall image will appear brighter, becoming blurry and lacking depth.

[0056] For example, the display device may also include a backlight unit that can supply drive current to the backlight units in the display device, and the backlight unit may also control the timing of the backlight units.

[0057] It is understood that the display device may also include other modules, and the embodiments of this application do not limit this.

[0058] In the above scenarios, the three-dimensional display method provided in this application embodiment can also be applied to electronic devices, such as monitors, mobile phones, laptops, and tablets, which can be used for light-emitting displays.

[0059] The three-dimensional display method provided in the embodiments of this application will be further described below with reference to the accompanying drawings.

[0060] Applied to the aforementioned display devices, embodiments of this application provide a three-dimensional display method, such as... Figure 3 As shown, Figure 3 The flowchart of this 3D display method is shown in the figure. The method includes the following steps.

[0061] S301, The display device switches from two-dimensional display mode to three-dimensional display mode.

[0062] The mapping relationship between grayscale and luminous intensity of the display panel in the three-dimensional display mode conforms to the second gamma curve.

[0063] For example, in this embodiment, the display device can simultaneously support a three-dimensional display mode and a two-dimensional display mode. In the two-dimensional display mode, the mapping relationship between the grayscale and luminous intensity of the display panel conforms to a first gamma curve, which can be a standard luminance response curve. In the three-dimensional display mode, the mapping relationship between the grayscale and luminous intensity of the display panel conforms to a second gamma curve, and the first and second gamma curves are different. That is, the correspondence between grayscale and gamma voltage in the three-dimensional display mode is different from that in the two-dimensional display mode, and the display panel displays different brightness under different gamma voltages.

[0064] Optionally, the luminance corresponding to the first grayscale range under the second gamma curve is higher than the luminance corresponding to the first grayscale range under the first gamma curve; and / or, the luminance corresponding to the second grayscale range under the second gamma curve is lower than the luminance corresponding to the second grayscale range under the first gamma curve. Wherein, the first grayscale range is a low grayscale range, and the second grayscale range is a high grayscale range.

[0065] For example, the gray levels in the first gray level range can be understood as the second lowest gray level, and the gray levels in the second gray level range can be understood as the second highest gray level. The low gray level range can be the part of the gray level value in the mapping range of the gray levels in the second gamma curve that is less than the first value, and the high gray level range can be the part of the gray level value in the mapping range of the gray levels in the second gamma curve that is greater than the second value. The first value and the second value can be set according to requirements, wherein the first value is less than the second value on the horizontal axis of the curve.

[0066] For example, such as Figure 4 As shown, Figure 4 The diagram illustrates a first gamma curve and a second gamma curve. Specifically, Figure 4 The diagram simultaneously shows schematics of the first and second gamma curves in the first and second grayscale ranges. The horizontal axis represents grayscale, ranging from 0 to 255, and the vertical axis represents luminance, ranging from 0 to 1. From... Figure 4 As can be seen, compared with the first gamma curve, the luminous intensity of the low grayscale of the second gamma curve is higher, while the luminous intensity of the high grayscale of the second gamma curve is lower.

[0067] S302. The display device acquires the grayscale of the current frame image in three-dimensional display mode.

[0068] For example, to achieve a 3D display mode, the processor in the display device can cyclically send left and right frame images to the image unit according to a refresh rate, as well as send the grayscale values ​​of the left and right frame images to the image unit. The image unit can receive the images and their grayscale values ​​sent by the processor via an LVDS interface.

[0069] For example, each pixel in an image corresponds to a grayscale level, and the grayscale level of the current frame should be understood as the set of grayscale levels of each pixel in the current frame. Specifically, the number of grayscale levels corresponds to the number of colors and the number of gamma voltages.

[0070] S303: The display device supplies a gamma voltage that matches the grayscale to the display panel, driving the display panel to emit light.

[0071] For example, an image unit in a display device can supply gamma voltage to a display panel. The image unit may include a gamma circuit, specifically a series of resistors. The gamma circuit can divide a reference voltage using these resistors to obtain gamma voltages of varying values. This gamma voltage can alter the angle of the liquid crystal molecules in the display panel, thereby driving the display panel to emit light.

[0072] Optionally, the grayscale mapping range of the 3D display mode is within the grayscale mapping range of the 2D display mode.

[0073] For example, such as Figure 5 As shown, Figure 5 (a) shows the grayscale mapping range of the two-dimensional display mode. Figure 5 (b) shows the grayscale mapping range of the 3D display mode. From Figure 5 As can be seen, compared to the two-dimensional display mode, the three-dimensional display mode removes the darkest and brightest parts of the grayscale. Understandably, the three-dimensional display mode could also remove only the darkest parts of the grayscale, or only the brightest parts.

[0074] For example, one endpoint of the grayscale mapping range in the 3D display mode can coincide with the endpoint of the grayscale mapping range in the 2D display mode. In one possible example, taking 8 bits of grayscale as an example, the grayscale mapping range in the 2D display mode can be 0–255, and the grayscale mapping range in the 3D display mode can be 0–240. Alternatively, the grayscale mapping range in the 3D display mode can be 16–255, or 16–240. In one possible example, assuming the grayscale mapping range in the 3D display mode is 16–240, then the first grayscale range in the second lowest grayscale range can be 16–30, and the second grayscale range in the second highest grayscale range can be 208–240, which differs from the 0–255 grayscale mapping range in the 2D display mode.

[0075] For example, assuming the gamma voltage ranges from 0 to 16V, in a two-dimensional display mode, the gamma voltage corresponding to the lowest grayscale 0 is 6.5V, and the gamma voltage corresponding to the highest grayscale 255 is 16V. On the other hand, taking a three-dimensional display mode with a grayscale mapping range of 16 to 240 as an example, the gamma voltage corresponding to the lowest grayscale 16 in a three-dimensional display mode is 6.5V, and the gamma voltage corresponding to the highest grayscale 240 is 16V. Therefore, compared to the two-dimensional display mode, the gamma voltage corresponding to lower grayscales in the three-dimensional display mode is lower, and the gamma voltage corresponding to higher grayscales is higher. This can reduce the liquid crystal response time, improve crosstalk issues in three-dimensional displays, and enhance the user's viewing experience.

[0076] Optionally, the minimum grayscale value in the 3D display mode is greater than the minimum grayscale value in the 2D display mode.

[0077] For example, the essence of grayscale switching in a frame image is the movement of liquid crystal molecules, where the liquid crystal molecules are located between a first crystal and a second crystal. The first crystal can be continuous fiber-reinforced glass, and the second crystal can be a photoelectric array glass. An electric field exists between the first crystal and the second crystal, with the direction of the electric field pointing from the first crystal to the second crystal.

[0078] Assuming that liquid crystal molecules need to switch from the second lowest grayscale to the second highest grayscale during the frame image switching process, that is, the liquid crystal molecules need to change from a vertical direction to a horizontal direction, such as... Figure 6 As shown, Figure 6 (a) shows the initial positions of the liquid crystal molecules in the electric field corresponding to the second lowest gray level in the two-dimensional display mode. Figure 6 (b) shows the initial position of the liquid crystal molecules corresponding to the second lowest gray level in the electric field during the three-dimensional display mode. In the two-dimensional display mode, due to the stronger electric field, the initial angle of the liquid crystal molecules corresponding to this second lowest gray level is the direction of the electric field, i.e., the vertical direction, requiring the liquid crystal molecules to rotate 90°. Furthermore, in the three-dimensional display mode, due to the weaker electric field, the initial angle of the liquid crystal molecules corresponding to this second lowest gray level is at an angle α1 to the direction of the electric field. Because of α1, the angle the liquid crystal molecules need to rotate is less than 90°.

[0079] in addition, Figure 6(c) in it shows the brightness change of the liquid crystal molecules over time during three-dimensional display. Among them, the liquid crystal molecules can reach the brightness corresponding to the set gray level within time t1. Assume that in the two-dimensional display mode, the liquid crystal molecules can reach the brightness corresponding to the set gray level within time t2. Since the angle that the liquid crystal molecules need to change in the three-dimensional display mode is smaller than the angle that the liquid crystal molecules need to change in the two-dimensional display mode, then t1 < t2. That is, in the three-dimensional display mode, the liquid crystal molecules can switch to the set value of the gray level faster, the liquid crystal response time is shorter, and the crosstalk problem can be improved.

[0080] Optionally, the maximum value of the gray level in the three-dimensional display mode is less than the maximum value of the gray level in the two-dimensional display mode.

[0081] Exemplarily, continue to take the example that the liquid crystal molecules need to switch from the second lowest gray level to the second highest gray level during the switching process of the frame image. As Figure 7 shown, Figure 7 (a) in it shows the end position of the liquid crystal molecules corresponding to the second highest gray level in the two-dimensional display mode in the electric field. Figure 7 (b) in it shows the end position of the liquid crystal molecules corresponding to the second highest gray level in the three-dimensional display mode in the electric field. In the two-dimensional display mode, since the electric field force in the two-dimensional display mode is weaker, the end angle of the liquid crystal molecules corresponding to the second highest gray level at this time is the horizontal direction, that is, the liquid crystal molecules have changed by 90°. In the three-dimensional display mode, since the electric field force in the three-dimensional display mode is stronger, there is an included angle between the end angle of the liquid crystal molecules corresponding to the second highest gray level at this time and the horizontal direction, denoted as α2, that is, the angle that the liquid crystal molecules have changed is less than 90°. Thus, in the three-dimensional display mode, the liquid crystal molecules switch to the set value of the gray level faster, the liquid crystal response time is shorter, and the crosstalk problem can be improved.

[0082] Optionally, the minimum value of the gray level in the three-dimensional display mode is greater than the minimum value of the gray level in the two-dimensional display mode, and the maximum value of the gray level in the three-dimensional display mode is less than the maximum value of the gray level in the two-dimensional display mode.

[0083] Exemplarily, continue to take the example that the liquid crystal molecules need to switch from the second lowest gray level to the second highest gray level during the switching process of the frame image. In the two-dimensional display, the liquid crystal molecules need to change by 90° during the switching process. In the three-dimensional display mode, the liquid crystal molecules need to change by 90° - α1 - α2 during the switching process. It can be easily seen that 90° - αl - α2 < 90°, that is to say, the three-dimensional display method provided by the embodiments of the present application can reduce the liquid crystal response time and improve the crosstalk problem.

[0084] Optionally, the mapping interval of the gamma voltage in the two-dimensional display mode is within the mapping interval of the gamma voltage in the three-dimensional display mode.

[0085] For example, one endpoint of the gamma voltage mapping range in the 3D display mode can coincide with the endpoint of the gamma voltage mapping range in the 2D display mode. In one possible example, taking an 8-bit grayscale as an example, the grayscale range for both the 2D and 3D display modes is 0–255. The gamma voltage mapping range for the 2D display mode can be 6.5V–16V, and the gamma voltage mapping range for the 3D display mode can be 6.5V–18V. Therefore, the gamma voltage corresponding to grayscale 255 in the 3D display mode can be 18V, which is higher than the 16V corresponding to grayscale 255 in the 2D display mode. Thus, by increasing the gamma voltage range, the electric field force applied to the liquid crystal molecules can be increased, resulting in a shorter liquid crystal response time in the 3D display mode compared to the 2D display mode. This improves the crosstalk problem in 3D displays.

[0086] Optionally, the display device further includes a backlight unit, wherein the mapping relationship between the driving current and the luminous intensity of the backlight unit in the two-dimensional display mode conforms to a first mapping curve. The three-dimensional display method further includes: the display device acquiring backlight data of the current frame image; the display device supplying driving current to the backlight unit based on the backlight data to drive the backlight unit to emit light. Wherein, the mapping relationship between the driving current and the luminous intensity of the backlight unit in the three-dimensional display mode conforms to a second mapping curve.

[0087] For example, the higher the driving current, the stronger the backlight unit's brightness. Since adjusting the grayscale mapping range of the 3D display mode mentioned earlier will cause a loss of contrast, the contrast of the display panel can be compensated by adjusting the magnitude of the driving current, thereby improving the contrast of the display panel and the user's viewing experience.

[0088] For example, compared to the first mapping curve, the driving current corresponding to the lower gray levels of the second mapping curve is smaller, and the driving current corresponding to the higher gray levels of the second mapping curve is larger.

[0089] Optionally, the luminance of the third grayscale range in the 3D display mode is lower than that of the third grayscale range in the 2D display mode; and / or, the luminance of the fourth grayscale range in the 3D display mode is higher than that of the fourth grayscale range in the 2D display mode. Wherein, the third grayscale range is a low grayscale range, and the fourth grayscale range is a high grayscale range.

[0090] For example, the gray level of the third gray level interval can be understood as the second lowest gray level, and the gray level of the fourth gray level interval can be understood as the second highest gray level. The third gray level interval can be the same as the first gray level interval, or it can be different from the first gray level interval. For example, the third gray level interval may be located within the first gray level interval, or the first gray level interval may be located within the third gray level interval. Correspondingly, the fourth gray level interval can be the same as the second gray level interval, or it can be different from the second gray level interval. For example, the fourth gray level interval may be located within the second gray level interval, or the second gray level interval may be located within the fourth gray level interval.

[0091] For example, compared to the two-dimensional display mode, the driving current corresponding to the third grayscale range of the three-dimensional display mode is smaller, that is, the backlight unit has a darker brightness, and / or, the driving current corresponding to the fourth grayscale range of the three-dimensional display mode is larger, that is, the backlight unit has a brighter brightness.

[0092] Optionally, when the luminance corresponding to the first grayscale interval under the second gamma curve is higher than the luminance corresponding to the first grayscale interval under the first gamma curve, the luminance corresponding to the third grayscale interval in the three-dimensional display mode is lower than the luminance corresponding to the third grayscale interval in the two-dimensional display mode; and / or, when the luminance corresponding to the second grayscale interval under the second gamma curve is lower than the luminance corresponding to the second grayscale interval under the first gamma curve, the luminance corresponding to the fourth grayscale interval in the three-dimensional display mode is higher than the luminance corresponding to the fourth grayscale interval in the two-dimensional display mode.

[0093] Specifically, since the gamma voltage corresponding to the second-lowest grayscale is lower, meaning the display panel is brighter, the driving current corresponding to the second-lowest grayscale can be reduced, resulting in a dimmer backlight unit and a darker display panel. Conversely, since the gamma voltage corresponding to the second-highest grayscale is higher, meaning the display panel is dimmer, the driving current corresponding to the second-highest grayscale can be increased, resulting in a brighter backlight unit and a brighter display panel. For example... Figure 8 As shown, Figure 8 (a) shows the grayscale mapping range of the 3D display mode. Figure 8 (b) in the figure shows the grayscale mapping range of the compensated 3D display mode.

[0094] from Figure 8 As can be seen, by increasing the driving current corresponding to the second-highest grayscale and decreasing the driving current corresponding to the second-lowest grayscale, the darkest and brightest parts of the grayscale are restored, which can compensate for the contrast loss caused by reducing the grayscale range, thereby improving the contrast of the display panel and the user's viewing experience.

[0095] For example, such as Figure 9 As shown, Figure 9The diagram shows the first and third gamma curves. For the backlight unit, if a standard signal generator is used to drive the backlight unit, the third gamma curve can be obtained. Since the driving current corresponding to the third grayscale range of the backlight unit is smaller, and the driving current corresponding to the fourth grayscale range is larger, the luminous intensity of the second lowest grayscale of the third gamma curve is lower, and the luminous intensity of the second highest grayscale of the third gamma curve is higher.

[0096] Another flowchart of the three-dimensional display method provided in this application embodiment is as follows: Figure 10 As shown, the processor sends the grayscale of the current frame's image to the image unit. Additionally, the gamma voltage and driving current corresponding to the second-lowest grayscale in the image unit are reduced; conversely, the gamma voltage and driving current corresponding to the second-highest grayscale are increased. Reducing the gamma voltage of the second-lowest grayscale alters the initial position of the liquid crystal molecules, while increasing the gamma voltage of the second-highest grayscale alters their ending position, thus reducing the angle at which the liquid crystal molecules need to transform and lowering the liquid crystal response time. Furthermore, reducing the driving current of the second-lowest grayscale and increasing the driving current of the second-highest grayscale compensate for the contrast loss caused by reducing the grayscale mapping range, improving the display panel's contrast and the user's viewing experience.

[0097] It is understood that, in order to achieve the above functions, the electronic device includes hardware and / or software modules that perform the respective functions. Based on the algorithmic steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application in conjunction with the embodiments, but such implementation should not be considered beyond the scope of this application.

[0098] This embodiment can divide the electronic device into functional modules according to the above method example. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0099] When dividing each function into modules according to its corresponding function. Figure 11 A schematic diagram of a possible composition of the display device 1100 involved in the above embodiments is shown, such as... Figure 11As shown, the display device 1100 may include: a processor 1101, an image unit 1102, a backlight unit 1103, and a display panel 1104.

[0100] The processor 1101 can be used to switch from a two-dimensional display mode to a three-dimensional display mode.

[0101] The image unit 1102 can be used to acquire the grayscale of the image of the current frame in a three-dimensional display mode.

[0102] The image unit 1102 can also be used to deliver a gamma voltage that matches the grayscale to the display panel 1104, driving the display panel 1104 to emit light.

[0103] In addition, the processor 1101 can also be used to send backlight data of the current frame image to the backlight unit 1103.

[0104] The image unit 1102 is also used to acquire the backlight data of the image of the current frame.

[0105] The image unit 1102 is also used to send a driving current to the backlight unit 1103 based on the backlight data, so as to drive the backlight unit 1103 to emit light.

[0106] It should be noted that all relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0107] The display device 1100 provided in this embodiment is used to execute the above-described three-dimensional display method, and therefore can achieve the same effect as the above-described implementation method.

[0108] When using integrated units, the display device 1100 may include a processing module, a storage module, and a communication module. The processing module can be used to control and manage the operation of the display device 1100, for example, to support the display device 1100 in executing the steps performed by the processor 1101, the image unit 1102, the backlight unit 1103, and the display panel 1104. The storage module can be used to support the display device 1100 in storing program code and data. The communication module can be used to support communication between the display device 1100 and other devices, such as communication with a wireless access device.

[0109] The processing module can be a processor or a controller. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module can be a memory. The communication module can specifically be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip, or other devices that interact with other electronic devices.

[0110] This application also provides an electronic device, which includes a display panel and a three-dimensional display system, wherein the three-dimensional display system and the display panel are electrically connected.

[0111] This application also provides another electronic device, including one or more processors and one or more memories. The one or more memories are coupled to the one or more processors, and the one or more memories are used to store computer program code, including computer instructions. When the one or more processors execute the computer instructions, the electronic device performs the aforementioned method steps to implement the three-dimensional display method in the above embodiments.

[0112] Embodiments of this application also provide a computer storage medium storing computer instructions. When the computer instructions are executed on an electronic device, the electronic device performs the aforementioned method steps to implement the three-dimensional display method in the above embodiments.

[0113] Embodiments of this application also provide a computer program product that, when run on a computer, causes the computer to perform the aforementioned related steps to implement the three-dimensional display method executed by the electronic device in the above embodiments.

[0114] In addition, embodiments of this application also provide an apparatus, which may specifically be a chip, component or module. The apparatus may include a connected processor and a memory. The memory is used to store computer execution instructions. When the apparatus is running, the processor can execute the computer execution instructions stored in the memory to cause the chip to execute the three-dimensional display method executed by the electronic device in the above-described method embodiments.

[0115] In this embodiment, the electronic device, computer storage medium, computer program product or chip are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding method provided above, and will not be repeated here.

[0116] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0117] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0118] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0119] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0120] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially or in other words, the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0121] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A three-dimensional display method, characterized by, The method is applied to a display device, the display device comprising a display panel, a mapping relationship between a gray scale and a luminous brightness of the display panel in a two-dimensional display mode conforms to a first gamma curve, and the method comprises: The display device is switched from the two-dimensional display mode to a three-dimensional display mode; The display device acquires a gray scale of an image of a current frame in the three-dimensional display mode; The display device delivers a gamma voltage matched with the gray scale to the display panel to drive the display panel to emit light; Wherein, a mapping relationship between the gray scale and the luminous brightness of the display panel in the three-dimensional display mode conforms to a second gamma curve.

2. The method of claim 1, wherein: a luminous brightness corresponding to a first gray scale interval in the second gamma curve is higher than a luminous brightness corresponding to the first gray scale interval in the first gamma curve; and / or a luminous brightness corresponding to a second gray scale interval in the second gamma curve is lower than a luminous brightness corresponding to the second gray scale interval in the first gamma curve. The display device further comprises a backlight unit, a mapping relationship between a driving current and a luminous brightness of the backlight unit in the two-dimensional display mode conforms to a first mapping curve, and the method further comprises:

3. The method according to claim 1 or 2, characterized in that, The display device acquires backlight data of the image of the current frame; The display device delivers a driving current based on the backlight data to the backlight unit to drive the backlight unit to emit light; Wherein, a mapping relationship between the driving current and the luminous brightness of the backlight unit in the three-dimensional display mode conforms to a second mapping curve.

4. The method of claim 3, wherein: a luminous brightness corresponding to a third gray scale interval in the three-dimensional display mode is lower than a luminous brightness corresponding to the third gray scale interval in the two-dimensional display mode; and / or a luminous brightness corresponding to a fourth gray scale interval in the three-dimensional display mode is higher than a luminous brightness corresponding to the fourth gray scale interval in the two-dimensional display mode.

5. The method of claim 4, wherein: when a luminous brightness corresponding to a first gray scale interval in the second gamma curve is higher than a luminous brightness corresponding to the first gray scale interval in the first gamma curve, a luminous brightness corresponding to a third gray scale interval in the three-dimensional display mode is lower than a luminous brightness corresponding to the third gray scale interval in the two-dimensional display mode; and / or when a luminous brightness corresponding to a second gray scale interval in the second gamma curve is lower than a luminous brightness corresponding to the second gray scale interval in the first gamma curve, a luminous brightness corresponding to a fourth gray scale interval in the three-dimensional display mode is higher than a luminous brightness corresponding to the fourth gray scale interval in the two-dimensional display mode.

6. The method of claim 5, wherein: the first gray scale interval is a low gray scale interval of the second gamma curve, and the second gray scale interval is a high gray scale interval of the second gamma curve; and / or the third gray scale interval is a low gray scale interval of the second gamma curve, and the fourth gray scale interval is a high gray scale interval of the second gamma curve.

7. The method of any one of claims 1-6, wherein: ​ ​ ​ ​ A minimum value of the gray scale of the three-dimensional display mode is greater than a minimum value of the gray scale of the two-dimensional display mode. And / or, a maximum value of the gray scale of the three-dimensional display mode is less than a maximum value of the gray scale of the two-dimensional display mode.

8. The method of any one of claims 1-6, wherein: a mapping interval of the gray scale of the three-dimensional display mode is within a mapping interval of the gray scale of the two-dimensional display mode; or, a mapping interval of the gamma voltage of the two-dimensional display mode is within a mapping interval of the gamma voltage of the three-dimensional display mode.

9. A display device, characterized by The display device comprises a processor, an image unit and a display panel; The processor is configured to switch from a two-dimensional display mode to a three-dimensional display mode, and a mapping relationship between a gray scale and a luminous brightness of the display panel in the two-dimensional display mode conforms to a first gamma curve. The image unit is configured to acquire a gray scale of an image of a current frame in the three-dimensional display mode. The image unit is further configured to deliver a gamma voltage matching the gray scale to the display panel to drive the display panel to emit light. The mapping relationship between the gray scale and the luminous brightness of the display panel in the three-dimensional display mode conforms to a second gamma curve.

10. The display device of claim 9, wherein: a luminous brightness corresponding to a first gray scale interval under the second gamma curve is higher than a luminous brightness corresponding to the first gray scale interval under the first gamma curve; and / or, a luminous brightness corresponding to a second gray scale interval under the second gamma curve is lower than a luminous brightness corresponding to the second gray scale interval under the first gamma curve.

11. The display device according to claim 9 or 10, characterized in that, The display device further comprises a backlight unit, and a mapping relationship between a driving current and a luminous brightness of the backlight unit in the two-dimensional display mode conforms to a first mapping curve. The image unit is further configured to acquire backlight data of an image of a current frame. The image unit is further configured to deliver a driving current based on the backlight data to the backlight unit to drive the backlight unit to emit light. The mapping relationship between the driving current and the luminous brightness of the backlight unit in the three-dimensional display mode conforms to a second mapping curve.

12. The display device of claim 11, wherein: a luminous brightness corresponding to a third gray scale interval in the three-dimensional display mode is lower than a luminous brightness corresponding to the third gray scale interval in the two-dimensional display mode; and / or, a luminous brightness corresponding to a fourth gray scale interval in the three-dimensional display mode is higher than a luminous brightness corresponding to the fourth gray scale interval in the two-dimensional display mode.

13. The display device of claim 12, wherein: when a luminous brightness corresponding to a first gray scale interval under the second gamma curve is higher than a luminous brightness corresponding to the first gray scale interval under the first gamma curve, a luminous brightness corresponding to a third gray scale interval in the three-dimensional display mode is lower than a luminous brightness corresponding to the third gray scale interval in the two-dimensional display mode; and / or, when the luminance corresponding to the second gray scale interval under the second gamma curve is lower than the luminance corresponding to the second gray scale interval under the first gamma curve, the luminance corresponding to the fourth gray scale interval under the three-dimensional display mode is higher than the luminance corresponding to the fourth gray scale interval under the two-dimensional display mode.

14. The display device of claim 13, wherein, the first gray scale interval is a low gray scale interval of the second gamma curve, and the second gray scale interval is a high gray scale interval of the second gamma curve; the third gray scale interval is a low gray scale interval of the second gamma curve, and the fourth gray scale interval is a high gray scale interval of the second gamma curve.

15. The display device of any one of claims 10-14, wherein, a minimum value of the gray scale under the three-dimensional display mode is greater than a minimum value of the gray scale under the two-dimensional display mode; and / or, a maximum value of the gray scale under the three-dimensional display mode is less than a maximum value of the gray scale under the two-dimensional display mode.

16. The display device of any one of claims 10-14, wherein, a mapping interval of the gray scale under the three-dimensional display mode is within a mapping interval of the gray scale under the two-dimensional display mode; or, a mapping interval of the gamma voltage under the two-dimensional display mode is within a mapping interval of the gamma voltage under the three-dimensional display mode.

17. A chip system, characterized by when the chip system is running on the electronic device, causing the electronic device to perform the method of any one of claims 1-8.

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