Screen flicker method and display device applying the same

Abstract

A screen flickering method and a display device using the same are disclosed. The display device includes a memory and a processor. The processor is configured to load instructions in the memory to perform the screen flickering method. The screen flickering method includes providing a first gamma curve, a second gamma curve and a third gamma curve, defining a plurality of first display blocks, a plurality of second display blocks and a plurality of third display blocks on a display screen of the display device, and sequentially performing a first display operation, a second display operation and a third display operation, in each of which the display device is controlled to display the display blocks corresponding to the gamma curves respectively. The corresponding relationship between the display blocks and the gamma curves in each of the display operations is different.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a screen flickering method and a display device applying the same, and particularly to a screen flickering method providing 40Hz flickering light stimulation and a display device applying the same. BACKGROUND

[0002] It is generally recognized in the academic community that the deposition of "amyloid-like protein" in the brain is the main cause of Alzheimer's disease. Current papers have revealed that 40Hz flickering light can stimulate the gamma brain waves of Alzheimer's mice, reduce the accumulation of amyloid-like protein, effectively improve the cognitive ability of Alzheimer's mice, and clinical experiments have also confirmed that stimulating the eyes of Alzheimer's patients with 40Hz light flickering can significantly slow down the memory and cognitive degradation of Alzheimer's patients by 83%, and brain atrophy is also reduced by 61%. SUMMARY

[0003] The present disclosure provides a screen flickering method and a display device applying the same, which can provide 40Hz flickering light stimulation to treat Alzheimer's patients.

[0004] According to an embodiment of the present disclosure, the screen flickering method comprises: providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein the gamma value of one of the first gamma curve, the second gamma curve, and the third gamma curve is different from the rest; defining a plurality of first display blocks, a plurality of second display blocks, and a plurality of third display blocks on a display screen of a display device, wherein the number of a plurality of first display blocks, a plurality of second display blocks, and a plurality of third display blocks in a predetermined display range is the same; performing a first display operation in a first time period; performing a second display operation in a second time period; and performing a third display operation in a third time period. The first display operation comprises: controlling the display device to display the first display blocks corresponding to the first gamma curve; controlling the display device to display the second display blocks corresponding to the second gamma curve; and controlling the display device to display the third display blocks corresponding to the third gamma curve. The second display operation comprises: controlling the display device to display the first display blocks corresponding to the second gamma curve; controlling the display device to display the second display blocks corresponding to the third gamma curve; and controlling the display device to display the third display blocks corresponding to the first gamma curve. The third display operation comprises: controlling the display device to display the first display blocks corresponding to the third gamma curve; controlling the display device to display the second display blocks corresponding to the first gamma curve; and controlling the display device to display the third display blocks corresponding to the second gamma curve.

[0005] In some embodiments, the first time period, the second time period, and the third time period are each the time of a frame, and the refresh rate of the display device is 120Hz.

[0006] In some embodiments, each of the first display block, the second display block, and the third display block has a block length and a block width, the relationship between which satisfies the following equation:

[0007] 0.01*W≦BL≦0.07*W

[0008] 0.01*W≦BW≦0.07*W

[0009] Where W is the width of a display area of ​​the display device.

[0010] In some embodiments, the gamma value of the first gamma curve is greater than the gamma value of the second gamma curve, and the gamma value of the second gamma curve is greater than the gamma value of the third gamma curve.

[0011] In some embodiments, the average of the first gamma curve, the second gamma curve, and the third gamma curve is equivalent to an average gamma curve, wherein the gamma value of the average gamma curve is between 1.8 and 2.6.

[0012] According to an embodiment of the present invention, the display device includes a memory and a processor. The memory stores a plurality of instructions. The processor loads the instructions from the memory to perform the following operations: providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein the gamma value of one of the first gamma curve, the second gamma curve, and the third gamma curve is different from the others; defining a plurality of first display blocks, a plurality of second display blocks, and a plurality of third display blocks on a display screen of the display device, wherein the plurality of first display blocks, the plurality of second display blocks, and the plurality of third display blocks are equal in number within a preset display range; performing a first display operation in a first time period; performing a second display operation in a second time period; and performing a third display operation in a third time period. The first display operation includes: controlling the display device to display a first display block corresponding to a first gamma curve; controlling the display device to display a second display block corresponding to a second gamma curve; and controlling the display device to display a third display block corresponding to a third gamma curve. The second display operation includes: controlling the display device to display the first display area corresponding to the second gamma curve; controlling the display device to display the second display area corresponding to the third gamma curve; and controlling the display device to display the third display area corresponding to the first gamma curve. The third display operation includes: controlling the display device to display the first display area corresponding to the third gamma curve; controlling the display device to display the second display area corresponding to the first gamma curve; and controlling the display device to display the third display area corresponding to the second gamma curve.

[0013] In some embodiments, the first time period, the second time period, and the third time period are each the time of a frame, and the refresh rate of the display device is 120Hz.

[0014] In some embodiments, each of the first display block, the second display block, and the third display block has a block length and a block width, the relationship between which satisfies the following equation:

[0015] 0.01*W≦BL≦0.07*W

[0016] 0.01*W≦BW≦0.07*W

[0017] Where W is the width of a display area of ​​the display device.

[0018] In some embodiments, the gamma value of the first gamma curve is greater than the gamma value of the second gamma curve, and the gamma value of the second gamma curve is greater than the gamma value of the third gamma curve.

[0019] In some embodiments, the average of the first gamma curve, the second gamma curve, and the third gamma curve is equivalent to an average gamma curve, wherein the gamma value of the average gamma curve is between 1.8 and 2.6. Attached Figure Description

[0020] To make the above and other objects, features, advantages and embodiments of the present invention more readily understood, the accompanying drawings are described below:

[0021] Figure 1 This is a flowchart illustrating a screen flickering method according to an embodiment of the present invention;

[0022] Figure 2 This is a diagram illustrating the standardized grayscale and brightness relationship according to an embodiment of the present invention;

[0023] Figure 3 It illustrates the display area and its internal components of the display screen of the display device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram illustrating the operation of the display device according to an embodiment of the present invention during a first time period, a second time period, and a third time period.

[0025] Figure 5 It is a flowchart illustrating the first display operation corresponding to the first time period;

[0026] Figure 6 It is the result of the first display operation corresponding to the first time period;

[0027] Figure 7 This is a flowchart illustrating the second display operation corresponding to the second time period;

[0028] Figure 8 It is the result of the second display operation corresponding to the second time period;

[0029] Figure 9 This is a flowchart illustrating the third display operation corresponding to the third time period;

[0030] Figure 10 It is the result of the third display operation corresponding to the third time period; and

[0031] Figure 11 It plots the brightness integral results of the first display block, the second display block, and the third display block over the first time period, the second time period, and the third time period.

[0032] In the attached figures, the following labels are used:

[0033] 100: Screen flickering methods

[0034] 110-150: Steps

[0035] 200A: First Gamma Curve

[0036] 200B: Second Gamma Curve

[0037] 200D: Third Gamma Curve

[0038] 300: Display device

[0039] 300A: Display Area

[0040] 310: Large Block

[0041] 320: Memory

[0042] 330: Processor

[0043] 3A: First display block

[0044] 3B: Second display block

[0045] 3D: Third Display Block

[0046] 510~530: Steps

[0047] 710~730: Steps

[0048] 910~930: Steps

[0049] BW: Width

[0050] BL: Length

[0051] W: Width Detailed Implementation

[0052] The following describes embodiments of the present invention. However, it is understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific contexts. The discussed and disclosed embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0053] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence; they are merely used to distinguish elements or operations described using the same technical terms.

[0054] Please refer to Figure 1 , Figure 1This is a schematic flowchart illustrating a screen flickering method 100 according to an embodiment of the present invention. The screen flickering method 100 is used to provide a 40Hz flickering light stimulus to a user, such as a user suffering from Alzheimer's disease, for treatment purposes. In the screen flickering method 100, step 110 is first performed to provide a first gamma curve 200A, a second gamma curve 200B, and a third gamma curve 200D, such as... Figure 2 As shown, where Figure 2 The horizontal axis represents the grayscale percentage, and the vertical axis represents the luminance percentage. The gamma value of one of the first gamma curve 200A, the second gamma curve 200B, and the third gamma curve 200D is different from the others. In this embodiment, the gamma values ​​of the first gamma curve 200A, the second gamma curve 200B, and the third gamma curve 200D are all different. However, in other embodiments of the present invention, the gamma values ​​of two of the first gamma curve 200A, the second gamma curve 200B, and the third gamma curve 200D are the same, while the gamma values ​​of the others are different. In some embodiments, the gamma values ​​of the first gamma curve 200A, the second gamma curve 200B, and the third gamma curve 200D are between 1.8 and 2.6, but the embodiments of the present invention are not limited to this.

[0055] Next, step 120 is performed to define a plurality of first display blocks 3A, a plurality of second display blocks 3B, and a plurality of third display blocks 3D on the display screen (e.g., display area 300A) of the display device 300, such as... Figure 3 As shown. Figure 3 This diagram illustrates the display area and internal components of the display device 300 according to an embodiment of the present invention. The display device 300 has a display area 300A for displaying the screen. In an embodiment of the present invention, step 120 defines a plurality of first display areas 3A, a plurality of second display areas 3B, and a plurality of third display areas 3D on the display screen (display area 300A). These display areas are arranged in a preset order and fill the entire display screen.

[0056] In this embodiment, the number of display blocks is the same within a preset 3x3 display area. In other words, the display screen contains multiple large blocks 310, and each large block 310 contains 3x3 display blocks. The number of first display blocks 3A, second display blocks 3B, and third display blocks 3D contained in each large block 310 is the same. In addition, the display device 300 includes a memory 320 and a processor 330. The memory 320 is used to store multiple instructions, and the processor 330 is used to load these instructions to execute the screen blinking method 100.

[0057] Then, steps 130, 140, and 150 are performed sequentially to perform a first display operation, a second display operation, and a third display operation in a first time period, a second time period, and a third time period, respectively, so that the display device 300 provides flashing light. Figure 4 As shown, steps 130, 140, and 150 control the first display block 3A, the second display block 3B, and the third display block 3D to display corresponding to the first gamma curve 200A, the second gamma curve 200B, and the third gamma curve 200D in a first time period (e.g., the first frame), a second time period (e.g., the second frame), and a third time period (e.g., the second frame), respectively. In this embodiment, the update rate of the display device 300 is 120Hz, i.e., 1 / 120 of a second (s). The time period for each frame is 1 / 40 of a second. However, embodiments of the present invention are not limited to this. In other embodiments of the present invention, the update rate of the display device 300 may be 240Hz or higher.

[0058] Please refer to the following at the same time Figure 4 , Figure 5 and Figure 6 ,in Figure 5 It is a flowchart illustrating step 130, and Figure 6 This plots the gamma curve of the display area 310 within the first time period (e.g., the first frame). For example... Figure 5 As shown, steps 510, 520, and 530 correspond to the display operations within the first time period. In step 510, the display device 300 is controlled to display the first display block 3A corresponding to the first gamma curve 200A; in step 520, the display device 300 is controlled to display the second display block 3B corresponding to the second gamma curve 200B; and in step 530, the display device 300 is controlled to display the third display block 3D corresponding to the third gamma curve 200D. The result of controlling the display in step 130 is as follows: Figure 6 As shown.

[0059] Please refer to the following at the same time Figure 4 , Figure 7 and Figure 8 ,in Figure 7 It is a flowchart illustrating step 140, and Figure 8 This plots the gamma curve of the display area 310 for the second time period (e.g., the second frame). Figure 7As shown, steps 710, 720, and 730 correspond to the display operation in the second time period. In step 710, the display device 300 is controlled to make the first display block 3A display corresponding to the second gamma curve 200B; in step 720, the display device 300 is controlled to make the second display block 3B display corresponding to the third gamma curve 200D; in step 730, the display device 300 is controlled to make the third display block 3D display corresponding to the first gamma curve 200A. The result of controlling the display in step 140 is as follows: Figure 8 As shown.

[0060] Please refer to the following at the same time Figure 4 , Figure 9 and Figure 10 ,in Figure 9 It is a flowchart illustrating step 150, and Figure 10 This plots the gamma curve of the display area 310 at the third time period (e.g., the third frame). Figure 9 As shown, steps 910, 920, and 930 correspond to the display operation in the third time period. In step 910, the display device 300 is controlled to make the first display block 3A display corresponding to the third gamma curve 200D; in step 920, the display device 300 is controlled to make the second display block 3B display corresponding to the first gamma curve 200A; in step 930, the display device 300 is controlled to make the third display block 3D display corresponding to the second gamma curve 200B. The result of controlling the display in step 150 is as follows: Figure 10 As shown.

[0061] Please refer to Figure 11 This plots the luminance integral results of the first display block 3A, the second display block 3B, and the third display block 3D over the first, second, and third time periods. Taking the second display block 3B in the upper right corner as an example, during the first time period, the second display block 3B is displayed according to the second gamma curve 200B; during the second time period, the second display block 3B is displayed according to the third gamma curve 200D; and during the third time period, the second display block 3B is displayed according to the first gamma curve 200A. Since each time period is one frame time (1 / 120 of a second), after the first, second, and third time periods (i.e., after 1 / 40 of a second), the second display block 3B will cause the user to perceive flicker, but its luminance integral result will correspond to the third gamma curve 200D.

[0062] Similarly, taking the third display area 3D in the lower left corner as an example, in the first time period, the third display area 3D is displayed according to the third gamma curve 200D; in the second time period, the third display area 3D is displayed according to the first gamma curve 200A; and in the third time period, the third display area 3D is displayed according to the second gamma curve 200B. Since each time period is one frame time (1 / 120 of a second), after the first, second, and third time periods (i.e., after 1 / 40 of a second), the third display area 3D will cause the user to perceive flicker, but its brightness integral result will still correspond to the third gamma curve 200D.

[0063] Similarly, taking the first display area 3A in the upper left corner as an example, during the first time period, the first display area 3A is displayed according to the first gamma curve 200A; during the second time period, the first display area 3A is displayed according to the second gamma curve 200B; and during the third time period, the first display area 3A is displayed according to the third gamma curve 200D. Since each time period is one frame time (1 / 120 of a second), after the first, second, and third time periods (i.e., after 1 / 40 of a second), the first display area 3A will cause the user to perceive flicker, but its brightness integral result will correspond to the third gamma curve 200D.

[0064] Furthermore, each large block 310 (i.e., a 3*3 display block) contains three first display blocks 3A, three second display blocks 3B, and three third display blocks 3D. Therefore, throughout the entire frame time, the brightness of the entire large block 310 is also uniformly distributed.

[0065] As can be seen from the above description, the embodiment of the present invention divides the frame of the display device 300 with a 120Hz refresh rate into three time periods (first frame, second frame, and third frame), and controls different display blocks to display according to different gamma curves within the three time periods. This allows each display block to flash at 40Hz simultaneously, thereby providing 40Hz flashing light to the user.

[0066] However, in other embodiments of the present invention, if the refresh rate of the display device 300 is 240Hz, the frame of the display device 300 will be divided into six time periods, and different display blocks will be controlled to display corresponding to six gamma curves within the six time periods. The embodiments of the present invention are not limited to a 120Hz refresh rate.

[0067] Furthermore, the display block design of the aforementioned display device 300 can also prevent flickering light from interfering with people other than the user. For example, when a user views at close range (e.g., 40 cm), the clear field of view is small, and the gaze is easily focused on a single display block, resulting in a stronger flickering sensation, which is closer to the original value without graphic arrangement. On the other hand, when a non-user views at a distance (e.g., 100 cm), the clear field of view is large, and more display blocks can be seen. At the same time, different squares output signals with different gamma curves. By utilizing graphic arrangement, the overall flickering sensation is reduced due to the human eye's integration mechanism.

[0068] Please return Figure 3 In embodiments of the present invention, each display block, such as the second display block 3B, has a width BW and a length BL. The width BW and length BL of each display block conform to the following equation:

[0069] 0.01*W≦BL≦0.07*W(1)

[0070] 0.01*W≦BW≦0.07*W(2)

[0071] Where W is the width of the display area 300A of the display device 300.

[0072] The size design of the display area described above can prevent eye fatigue and allow users to view the display device for extended periods of time, while also providing a 40Hz flicker light to soothe the user's eyes.

[0073] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A screen flicker method, characterized by, A display device is provided, comprising: providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein a gamma value of one of the first, second, and third gamma curves is different from the rest; defining a plurality of first display blocks, a plurality of second display blocks, and a plurality of third display blocks on a display screen of the display device, wherein a number of ones of the first display blocks, a number of ones of the second display blocks, and a number of ones of the third display blocks are the same within a preset display range; performing a first display operation in a first time period, the first display operation comprising: controlling the display device to cause the first display blocks to display according to the first gamma curve; controlling the display device to cause the second display blocks to display according to the second gamma curve; and controlling the display device to cause the third display blocks to display according to the third gamma curve; performing a second display operation in a second time period, the second display operation comprising: controlling the display device to cause the first display blocks to display according to the second gamma curve; controlling the display device to cause the second display blocks to display according to the third gamma curve; and controlling the display device to cause the third display blocks to display according to the first gamma curve; and performing a third display operation in a third time period, the third display operation comprising: controlling the display device to cause the first display blocks to display according to the third gamma curve; controlling the display device to cause the second display blocks to display according to the first gamma curve; and controlling the display device to cause the third display blocks to display according to the second gamma curve. The first, second, and third time periods are each a time of one frame, and the update rate of the display device is 120 Hz. Each of the first, second, and third display blocks has a block length and a block width, and the relationship between the block length (BL) and the block width (BW) satisfies the following equations: 0.01*W≦BL≦0.07*W 2. The screen flickering method of claim 1, wherein, 0.01*W≦BW≦0.07*W 3. The screen flickering method of claim 1, wherein, where W is the width of a display area of the display device. The gamma value of the first gamma curve is greater than that of the second gamma curve, and the gamma value of the second gamma curve is greater than that of the third gamma curve. The average of the first, second, and third gamma curves is equivalent to an average gamma curve, and the gamma value of the average gamma curve is between 1.8 and 2.

6. comprising:

4. The screen flicker method of claim 1, wherein, a memory for storing a plurality of instructions; and 5. The screen flicker method of claim 1, wherein, a processor electrically connected to the memory for loading the instructions of the memory to perform:

6. A display device, characterized by comprising: providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein a gamma value of one of the first, second, and third gamma curves is different from the rest; ​ ​ ​ A plurality of first display blocks, a plurality of second display blocks and a plurality of third display blocks are defined on a display screen of the display device, wherein a number of display blocks of the first display blocks, a number of display blocks of the second display blocks and a number of display blocks of the third display blocks are the same within a preset display range; a first display operation is performed in a first time period, the first display operation comprising: controlling the display device to display the first display blocks according to the first gamma curve; controlling the display device to display the second display blocks according to the second gamma curve; and controlling the display device to display the third display blocks according to the third gamma curve; a second display operation is performed in a second time period, the second display operation comprising: controlling the display device to display the first display blocks according to the second gamma curve; controlling the display device to display the second display blocks according to the third gamma curve; and controlling the display device to display the third display blocks according to the first gamma curve; and a third display operation is performed in a third time period, the third display operation comprising: controlling the display device to display the first display blocks according to the third gamma curve; controlling the display device to display the second display blocks according to the first gamma curve; and controlling the display device to display the third display blocks according to the second gamma curve.

7. The display device of claim 6, wherein The first time period, the second time period and the third time period are each a time of one frame, and the update rate of the display device is 120 Hz.

8. The display device of claim 6, wherein, Each of the first display blocks, the second display blocks and the third display blocks has a block length and a block width, and the relationship between the block length (BL) and the block width (BW) satisfies the following equations: 0.01*W≦BL≦0.07*W 0.01*W≦BW≦0.07*W wherein W is the width of a display area of the display device.

9. The display device of claim 6, wherein, The gamma value of the first gamma curve is greater than the gamma value of the second gamma curve, and the gamma value of the second gamma curve is greater than the gamma value of the third gamma curve.

10. The display device of claim 6, wherein, The average of the first gamma curve, the second gamma curve and the third gamma curve is equivalent to an average gamma curve, and the gamma value of the average gamma curve is between 1.8 and 2.6.

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