Screen flickering method and display device using same

Abstract

The invention discloses a screen flickering method and a display device using the same. The display device comprises a memory and a processor. The processor is used for loading instructions of the memory to perform the screen flickering method. The screen flickering method comprises the following steps: 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 picture of the display device; and sequentially performing a first display operation, a second display operation and a third display operation to control the display device in each display operation so as to enable the display blocks to respectively correspond to the gamma curve for display. Wherein the corresponding relations between the display blocks and the gamma curve in each display operation are different.

Description

Technical Field

[0001] The present disclosure relates to a screen flickering method and a display device using the screen flickering method, and more particularly to a screen flickering method providing 40 Hz flickering light stimulation and a display device using the screen flickering method. Background Art

[0002] The academic community generally believes that the deposition of "amyloid protein" in the brain is the main cause of Alzheimer's disease. At present, there are papers that have revealed that 40Hz flickering light can stimulate the gamma brain waves of Alzheimer's mice, reduce the accumulation of amyloid protein, and effectively improve the cognitive ability of Alzheimer's mice. In addition, clinical experiments have confirmed that using 40Hz light flickering to stimulate the eyes of Alzheimer's patients can significantly slow down the memory and cognitive deterioration of Alzheimer's patients by 83%, and reduce brain atrophy by 61%. Summary of the invention

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

[0004] According to an embodiment of the present invention, the screen flickering method includes: 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 a display device, wherein the number of the plurality of first display blocks, the plurality of second display blocks, and the plurality of third display blocks is the same 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 make the first display block display in accordance with the first gamma curve; controlling the display device to make the second display block display in accordance with the second gamma curve; and controlling the display device to make the third display block display in accordance with the third gamma curve. The second display operation includes: controlling the display device to make the first display block display in accordance with the second gamma curve; controlling the display device to make the second display block display in accordance with the third gamma curve; and controlling the display device to make the third display block display in accordance with the first gamma curve. The third display operation includes: controlling the display device to make the first display block display in accordance with the third gamma curve; controlling the display device to make the second display block display in accordance with the first gamma curve; and controlling the display device to make the third display block display in accordance with the second gamma curve.

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

[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, and the relationship between the block length (BL) and the block width (BW) satisfies the following equation:

[0007] 0.01*W≦BL≦0.07*W

[0008] 0.01*W≦BW≦0.07*W

[0009] Wherein 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, an average of the first gamma curve, the second gamma curve, and the third gamma curve is equivalent to an average gamma curve, and a 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 is used to store a plurality of instructions. The processor is used to load the instructions of the memory to perform: 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 a display device, wherein the plurality of first display blocks, the plurality of second display blocks, and the plurality of third display blocks are the same 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 make the first display block display in accordance with the first gamma curve; controlling the display device to make the second display block display in accordance with the second gamma curve; and controlling the display device to make the third display block display in accordance with the third gamma curve. The second display operation includes: controlling the display device to make the first display block display in accordance with the second gamma curve; controlling the display device to make the second display block display in accordance with the third gamma curve; and controlling the display device to make the third display block display in accordance with the first gamma curve. The third display operation includes: controlling the display device to make the first display block display in accordance with the third gamma curve; controlling the display device to make the second display block display in accordance with the first gamma curve; and controlling the display device to make the third display block display in accordance with the second gamma curve.

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

[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, and the relationship between the block length (BL) and the block width (BW) satisfies the following equation:

[0015] 0.01*W≦BL≦0.07*W

[0016] 0.01*W≦BW≦0.07*W

[0017] Wherein 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, an average of the first gamma curve, the second gamma curve, and the third gamma curve is equivalent to an average gamma curve, and a gamma value of the average gamma curve is between 1.8 and 2.6. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the above and other objects, features, advantages and embodiments of the present invention more understandable, the accompanying drawings are described as follows:

[0021] Figure 1 is a schematic diagram illustrating a flow chart of a screen flashing method according to an embodiment of the present invention;

[0022] Figure 2 is a graph showing the relationship between grayscale and brightness after standardization according to an embodiment of the present invention;

[0023] Figure 3 The display block and internal components of the display screen of the display device according to the embodiment of the present invention are illustrated;

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

[0025] Figure 5 is a schematic diagram illustrating a flow chart of a first display operation corresponding to a first time period;

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

[0027] Figure 7 is a schematic diagram illustrating a flow chart of a second display operation corresponding to a second time period;

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

[0029] Fig. 9 is a schematic diagram illustrating a flow chart of a third display operation corresponding to a third time period;

[0030] Fig.10 is to illustrate the result of the third display operation corresponding to the third time period; and

[0031] Fig.11 The diagram shows the brightness integration results of the first display block, the second display block and the third display block in the first time period, the second time period and the third time period.

[0032] Wherein, the reference numerals are:

[0033] 100:Screen flashing method

[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: Big Block

[0041] 320: Memory

[0042] 330: Processor

[0043] 3A: First display block

[0044] 3B: Second display block

[0045] 3D: The 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 DESCRIPTION

[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 variety of specific contexts. The embodiments discussed and disclosed are for illustration only and are not intended to limit the scope of the present invention.

[0053] The terms “first”, “second”, etc. used in this document do not particularly refer to an order or sequence, but are only used to distinguish elements or operations described with the same technical terms.

[0054] Please refer to Figure 1 , Figure 1FIG. 1 is a flow chart of a screen flickering method 100 according to an embodiment of the present invention. The screen flickering method 100 is used to provide 40 Hz flickering light stimulation to a user, such as a user suffering from Alzheimer's disease, to treat the user. 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, Figure 2 The horizontal axis is the grayscale percentage, and the vertical axis is the brightness 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 the present 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 thereto.

[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 (eg, display area 300A) of the display device 300, such as Figure 3 shown. Figure 3 The display blocks and internal components of the display screen of the display device 300 according to the embodiment of the present invention are illustrated. The display device 300 has a display area 300A, which is used to display the screen. In the embodiment of the present invention, step 120 defines 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 (display area 300A). These display blocks are arranged in a preset order and fill the entire display screen.

[0056] In this embodiment, the display blocks are the same in number within a preset display range of 3*3. In other words, the display screen includes a plurality of large blocks 310, and the large block 310 includes 3*3 display blocks. The number of first display blocks 3A, second display blocks 3B, and third display blocks 3D included 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 a plurality of instructions, and the processor 330 is used to load these instructions to execute the screen flickering method 100.

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

[0058] Please also refer to Figure 4 , Figure 5 and Figure 6 ,in Figure 5 is a schematic diagram showing the flow of step 130, and Figure 6 3 is a diagram showing a gamma curve corresponding to a display block of the large block 310 in a first time period (eg, a first frame). Figure 5 As shown, steps 510, 520 and 530 correspond to the display operation in the first time period. In step 510, the display device 300 is controlled to make the first display block 3A display in accordance with the first gamma curve 200A; in step 520, the display device 300 is controlled to make the second display block 3B display in accordance with the second gamma curve 200B; in step 530, the display device 300 is controlled to make the third display block 3D display in accordance with the third gamma curve 200D. The result of step 130 control display is as follows: Figure 6 shown.

[0059] Please also refer to Figure 4 , Figure 7 and Figure 8 ,in Figure 7 is a flow chart showing step 140, and Figure 8 3 is a diagram showing a gamma curve corresponding to a display block of the large block 310 in a second time period (eg, a 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 in accordance with the second gamma curve 200B; in step 720, the display device 300 is controlled to make the second display block 3B display in accordance with the third gamma curve 200D; in step 730, the display device 300 is controlled to make the third display block 3D display in accordance with the first gamma curve 200A. The result of step 140 control display is as follows: Figure 8 shown.

[0060] Please also refer to Figure 4 , Fig. 9 and Fig.10 ,in Fig. 9 is a flow chart showing step 150, and Fig.10 3 is a diagram showing a gamma curve corresponding to a display block of the large block 310 in a third time period (eg, a third frame). Fig. 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 step 150 control display is as follows: Fig.10 shown.

[0061] Please refer to Fig.11 , which depicts the brightness integration results of the first display block 3A, the second display block 3B and the third display block 3D in the first time period, the second time period and the third time period. Taking the second display block 3B in the upper right corner as an example, in the first time period, the second display block 3B displays corresponding to the second gamma curve 200B; in the second time period, the second display block 3B displays corresponding to the third gamma curve 200D; in the third time period, the second display block 3B displays corresponding to the first gamma curve 200A. Since each time period is a frame time (1 / 120 seconds), after the first time period, the second time period and the third time period (i.e., after 1 / 40 seconds), the second display block 3B will allow the user to feel flicker, but its brightness integration result will correspond to the third gamma curve 200D.

[0062] Similarly, taking the third display block 3D in the lower left corner as an example, in the first time period, the third display block 3D is displayed corresponding to the third gamma curve 200D; in the second time period, the third display block 3D is displayed corresponding to the first gamma curve 200A; in the third time period, the third display block 3D is displayed corresponding to the second gamma curve 200B. Since each time period is a frame time (1 / 120 seconds), after the first time period, the second time period and the third time period (i.e., after 1 / 40 seconds), the third display block 3D will allow the user to feel flicker, but its brightness integration result will correspond to the third gamma curve 200D.

[0063] Similarly, taking the first display block 3A in the upper left corner as an example, in the first time period, the first display block 3A is displayed corresponding to the first gamma curve 200A; in the second time period, the first display block 3A is displayed corresponding to the second gamma curve 200B; in the third time period, the first display block 3A is displayed corresponding to the third gamma curve 200D. Since each time period is a frame time (1 / 120 seconds), after the first time period, the second time period and the third time period (i.e., after 1 / 40 seconds), the first display block 3A will allow the user to feel flicker, but its brightness integration result will correspond to the third gamma curve 200D.

[0064] Moreover, each large block 310 (ie, 3*3 display blocks) includes three first display blocks 3A, three second display blocks 3B, and three third display blocks 3D. Therefore, in the entire frame time, the brightness of the entire large block 310 is evenly distributed.

[0065] From the above description, it can be seen that the embodiment of the present invention divides the frame of the display device 300 with a 120Hz refresh rate into three time periods (a first frame, a second frame, and a third frame), and controls different display blocks to display corresponding to different gamma curves within the three time periods, so that each display block can flash at 40Hz at the same time, 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 240 Hz, the frame of the display device 300 is divided into six time periods, and different display blocks are controlled to display six gamma curves in the six time periods. The present invention is not limited to the refresh rate of 120 Hz.

[0067] In addition, the display block design of the display device 300 can also prevent flickering light from disturbing people other than the user. For example, when a user watches at a close distance (e.g., 40 cm), the clear field of vision is small, and the line of sight is easily focused on a single display block, and the flickering feeling is stronger, and the flickering feeling is closer to the original value without graphic arrangement. For another example, when a non-user watches at a long distance (e.g., 100 cm), the clear field of vision is large, and more display blocks can be seen. At the same time, different squares will output signals with different gamma curves. By using graphic arrangement, the overall flickering feeling is averaged and reduced due to the human eye integration mechanism.

[0068] Please go back Figure 3 In an embodiment 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 the length BL of each display block meet the following equation:

[0069] 0.01*W≦BL≦0.07*W(1)

[0070] 0.01*W≦BW≦0.07*W(2)

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

[0072] The size design of the display block can avoid eye fatigue of the user, allowing the user to watch the display device 300 for a long time, while the user can be treated with 40 Hz flickering light.

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

Claims

1. A screen flashing method, characterized in that: Applicable to a display device, comprising: Providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein a gamma value of one of the first gamma curve, the second gamma curve, and the third gamma curve is different from the others; 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 the plurality of the first display blocks, the plurality of the second display blocks, and the plurality of the third display blocks are the same in number 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 make the first display blocks display in accordance with the first gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the second gamma curve; as well as Controlling the display device to make the third display blocks display in accordance with the third gamma curve; Performing a second display operation in a second time period, the second display operation comprising: Controlling the display device to make the first display blocks display in accordance with the second gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the third gamma curve; as well as Controlling the display device to enable the third display blocks to display in accordance with 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 make the first display blocks display in accordance with the third gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the first gamma curve; as well as The display device is controlled to make the third display blocks display in accordance with the second gamma curve.

2. The screen flashing method according to claim 1, characterized in that: The first time period, the second time period and the third time period are respectively the time of one frame, and the update rate of the display device is 120 Hz.

3. The screen flashing method according to claim 1, characterized in that: 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 equation: 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.

4. The screen flashing method according to claim 1, characterized in that: 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.

5. The screen flashing method according to claim 1, characterized in that: 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.

6. A display device, characterized in that: Include: a memory for storing a plurality of instructions; and A processor is electrically connected to the memory and is used to load the instructions in the memory to perform: Providing a first gamma curve, a second gamma curve, and a third gamma curve, wherein a gamma value of one of the first gamma curve, the second gamma curve, and the third gamma curve is different from the others; 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 the plurality of the first display blocks, the plurality of the second display blocks, and the plurality of the third display blocks are the same in number 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 make the first display blocks display in accordance with the first gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the second gamma curve; as well as The display device is controlled to make the third display blocks display in accordance with the third gamma curve; a second display operation is performed in a second time period, and the second display operation includes: Controlling the display device to make the first display blocks display in accordance with the second gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the third gamma curve; as well as Controlling the display device to enable the third display blocks to display in accordance with 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 make the first display blocks display in accordance with the third gamma curve; Controlling the display device to enable the second display blocks to display in accordance with the first gamma curve; as well as The display device is controlled to make the third display blocks display in accordance with the second gamma curve.

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

8. The display device according to 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 equation: 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 according to 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 according to 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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