Detection method

Abstract

A detection method is disclosed, comprising: setting a first weight, wherein the first weight corresponds to a first display frequency and a first display polarity; setting a second weight, wherein the second weight corresponds to a second display frequency and a second display polarity; judging whether the polarity of display liquid crystal in a first one of a plurality of frames and a second one of the plurality of frames in a first display period is balanced according to the first weight and the second weight; and if the polarity of display liquid crystal in the first one of the plurality of frames and the second one of the plurality of frames is not balanced, compensating a third one of the plurality of frames in a second display period.

Description

Technical Field

[0001] This disclosure relates to a testing method, and more particularly to a testing method for balancing the polarity of liquid crystals in a display panel. Background Technology

[0002] In existing technologies, display panels can employ a variable refresh rate (VRR) to output corresponding images based on different frame rates, thereby enabling rapid switching to form a complete picture. However, the polarity of the liquid crystal in the display panel cannot be quickly balanced as the images switch, resulting in a flicker problem. Summary of the Invention

[0003] This disclosure provides a detection method in some embodiments. By setting multiple weights corresponding to different display frequencies and different display polarities, a timing controller (TCON) can calculate a first total weight value for a first frame and a second frame within a preset time period. Based on this first total weight value, the timing controller can determine whether the polarity of the display liquid crystal in the first and second frames is balanced. If the polarity of the display liquid crystal is unbalanced, the timing controller can adjust the display frequency and display polarity of the display liquid crystal to compensate for the imbalance. This effectively avoids flickering problems.

[0004] This disclosure provides a detection method in some embodiments. The detection method is applicable to a display panel device and a timing controller. The display device includes a display panel, which includes a liquid crystal display (LCD). The timing controller is used to execute the detection method, which includes: setting a first weight, wherein the first weight corresponds to a first display frequency and a first display polarity; setting a second weight, wherein the second weight corresponds to a second display frequency and a second display polarity; determining, based on the first weight and the second weight, whether the polarity of the LCD in a first and a second of a plurality of frames is balanced during a first display period; and if the polarity of the LCD in the first and a second of the plurality of frames is unbalanced, compensating for a third of the plurality of frames during a second display period.

[0005] According to some embodiments disclosed herein, the detection method further includes: setting a third weight, wherein the third weight corresponds to the second display frequency and the first display polarity; and setting a fourth weight, wherein the fourth weight corresponds to the first display frequency and the second display polarity.

[0006] According to some embodiments of this disclosure, the operation of determining whether the polarity of the display liquid crystal in the first of the plurality of frames and the second of the plurality of frames is balanced during the first display period includes: detecting whether the display liquid crystal switches between display at the first display frequency and the second display frequency in the first of the plurality of frames and the second of the plurality of frames, respectively; and if it is detected that the display liquid crystal switches between display at the first display frequency and the second display frequency in the first of the plurality of frames and the second of the plurality of frames, respectively, then calculating a first total weight value within a preset time period.

[0007] According to some embodiments disclosed herein, the operation of calculating the first total weight value within the preset time period includes: calculating the sum of the first weight and the second weight within the preset time period to obtain the first total weight value; determining whether the first total weight value exceeds a set threshold; and if it is determined that the first total weight value exceeds the set threshold, outputting the first total weight value and the determination result.

[0008] According to some embodiments disclosed herein, the operation of determining whether the polarity of the display liquid crystal in the first of the plurality of frames and the second of the plurality of frames is balanced during the first display period further includes: detecting an imbalance cycle between the first of the plurality of frames and the second of the plurality of frames based on the determination result; determining whether the imbalance cycle exceeds a set threshold value; and if it is determined that the imbalance cycle exceeds the set threshold value, determining that the polarity of the display liquid crystal in the first of the plurality of frames and the second of the plurality of frames is unbalanced during the first display period.

[0009] According to some embodiments of this disclosure, the operation of detecting the imbalance cycle between the first of the plurality of frames and the second of the plurality of frames includes: calculating the number of times the first total weight value exceeds the set threshold to obtain the imbalance cycle.

[0010] According to some embodiments of this disclosure, the operation of compensating the third party among the plurality of frames during the second display period includes: causing the display liquid crystal in the third party among the plurality of frames to display at a display frequency corresponding to the first total weight value, based on the first total weight value.

[0011] According to some embodiments of this disclosure, the polarity of the display liquid crystal in the third of the plurality of frames during the second display period is opposite to the polarity of the display liquid crystal in the second of the plurality of frames during the first display period.

[0012] According to some embodiments disclosed herein, the first display frequency is greater than the second display frequency.

[0013] According to some embodiments disclosed herein, the first display polarity is opposite to the second display polarity. Attached Figure Description

[0014] To gain a more complete understanding of the embodiments and their advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram of a display device according to some embodiments of the present disclosure;

[0016] Figure 2 This is a flowchart of a detection method based on some embodiments of the present disclosure;

[0017] Figure 3A as well as Figure 3B A flowchart illustrating the steps of a detection method according to some embodiments of this disclosure; and

[0018] Figure 4 This is a schematic diagram of polarity compensation of a display liquid crystal according to some embodiments of the present disclosure.

[0019] In the attached figures, the following labels are used:

[0020] 100: Display device

[0021] 120: Graphics Processing Unit

[0022] 140: Timing Controller

[0023] 142: Logic Gates

[0024] 160: Display panel

[0025] 162: Control chip

[0026] 180: Substrate

[0027] 200: Method

[0028] S220, S240, S260, S280, S1, S2, S3, S4, S5, S6: Steps

[0029] DP1, DP2: Display period

[0030] DT: Preset time

[0031] F1, F2, F3, F4: Picture frame

[0032] LC: Liquid Crystal Display Detailed Implementation

[0033] The embodiments disclosed herein are discussed in detail below. However, it should be understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific situations. The embodiments discussed and disclosed are for illustrative purposes only and are not intended to limit the scope of this disclosure. The terms "first," "second," etc., used herein do not specifically refer to any order or sequence, but are used only to distinguish components or operations described using the same technical terms.

[0034] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a display device 100 according to a partial embodiment of the present disclosure. The display device 100 can be applied to a notebook computer, or similar or combined devices. The display device 100 includes a graphics processing unit (GPU) 120, a timing controller (TCON) 140, a display panel 160, and a substrate 180, wherein the display panel 160 is disposed on the substrate 180, and the display panel 160 includes a plurality of liquid crystal displays (LCs) (see reference 180). Figure 4 ).

[0035] In some embodiments, the graphics processing unit 120 is electrically connected to the timing controller 140, and the graphics processing unit 120 is used to output data voltage to the logic gate 142 of the timing controller 140. The timing controller 140 is electrically connected to the display panel 160, and the timing controller 140 is used to convert the data voltage into multiple timing signals, and output the multiple timing signals to the control chip 162 of the display panel 160, so that the display panel 160 displays different images according to the multiple timing signals.

[0036] It is worth mentioning that the timing controller 140 includes a processor and memory. The timing controller 140 can execute detection method 200 (see reference). Figure 2The processor adjusts the display frequency and polarity of the liquid crystal LC in the display panel 160 to compensate for the liquid crystal LC. This effectively prevents flickering during screen switching. The processor may include, but is not limited to, a single processing unit or an integration of multiple microprocessors, electrically coupled to the memory, which may be internal or external memory, including volatile or non-volatile memory. In this embodiment, the processor can access and execute at least one instruction from the memory to further implement the application configuration module defined by the at least one instruction. The above embodiments of the processor are for illustrative purposes, and various hardware components such as circuits or modules that can implement the processor are within the scope of this disclosure.

[0037] In detail, please also Figure 2 , refer to Figure 2 This is a flowchart of a detection method 200 according to a partial embodiment of the present disclosure. Detection method 200 includes steps S220, S240, S260, and S280. It should be understood that additional steps may be added before, during, and after steps S220, S240, S260, and S280, and for another partial embodiment of the method, some of the steps mentioned below may be replaced or omitted, and the order of steps / procedures may be changed.

[0038] First, detection method 200 proceeds to step S220. A first weight, a second weight, a third weight, and a fourth weight are set. For example, in this embodiment, the timing controller 140 can set the first weight, the second weight, the third weight, and the fourth weight based on data pre-stored by the user. The first weight corresponds to a first display frequency and a first display polarity. For example, the first weight corresponds to 60Hz and a positive display polarity. The second weight corresponds to a second display frequency and a second display polarity, wherein the first display frequency is greater than the second display frequency, and the first display polarity is opposite to the second display polarity. For example, the second weight corresponds to 40Hz and a negative display polarity. The third weight corresponds to the second display frequency and the first display polarity. For example, the third weight corresponds to 40Hz and a positive display polarity. The fourth weight corresponds to the first display frequency and the second display polarity. For example, the fourth weight corresponds to 60Hz and a negative display polarity.

[0039] Next, detection method 200 proceeds to step S240. Based on the first weight and the second weight, it is determined that during the display period DP1 (refer to...) Figure 4 (Refer to) the inner frame F1 (reference) Figure 4 ) and frame F2 (refer to) Figure 4 Whether the polarity of the liquid crystal LC in the display is balanced. For details, please refer to [link / reference needed]. Figure 3A as well as Figure 3B , Figure 3A as well as Figure 3B This is a flowchart of step S240 of the detection method 200 according to a partial embodiment of the present disclosure. Step S240 includes steps S1 to S6.

[0040] First, step S240 proceeds to step S1. It detects whether the display liquid crystal LC switches between the first display frequency and the second display frequency in frame F1 and frame F2, respectively. Specifically, the timing controller 140 can detect whether the display liquid crystal LC switches between the first display frequency and the second display frequency in frame F1 and frame F2, respectively, based on the data voltage output by the graphics processing unit 120. If the timing controller 140 detects that the display liquid crystal LC does not switch between the first display frequency and the second display frequency in frame F1 and frame F2, then step S260 is performed. If the timing controller 140 detects that the display liquid crystal LC switches between the first display frequency and the second display frequency in frame F1 and frame F2, then step S2 is performed.

[0041] In step S2, the timing controller 140 sums the first weight and the second weight corresponding to the first display frequency and the second display frequency to calculate a first total weight value within a preset time DT. For example, in this embodiment, the timing controller 140 first calculates the sum of the first weight and the second weight within the preset time DT to obtain the first total weight value. Next, the timing controller 140 determines whether the first total weight value exceeds a set threshold. If it is determined that the first total weight value exceeds the set threshold, the first total weight value and the determination result are output. If it is determined that the first total weight value does not exceed the set threshold, then proceed to step S260.

[0042] Next, step S240 proceeds to step S3. An imbalance cycle between frame F1 and frame F2 is detected. For example, in this embodiment, based on the first total weight value and the judgment result, the timing controller 140 calculates the number of times the first total weight value of frame F1 and frame F2 exceeds the set threshold to obtain the imbalance cycle.

[0043] Next, step S240 proceeds to step S4. It is determined whether the unbalanced cycle exceeds a set threshold value. Specifically, the timing controller 140 determines whether the unbalanced cycle exceeds the set threshold value. If the timing controller 140 determines that the unbalanced cycle does not exceed the set threshold value, then step S5 is performed. If the timing controller 140 determines that the unbalanced cycle exceeds the set threshold value, then step S6 is performed.

[0044] In step S5, the timing controller 140 determines the polarity balance of the display liquid crystal LCs in frames F1 and F2 of DP1 during the display period, and proceeds to step S260. In step S260, the timing controller 140 does not adjust the display frequency and display polarity of the display liquid crystal LCs of the display panel 160 to maintain the display frequency and display polarity. In other words, the timing controller 140 does not compensate the display panel 160.

[0045] In step S6, the timing controller 140 will determine that the polarity of the display liquid crystal LC in frame F1 and frame F2 in DP1 is unbalanced during the display period, and proceed to step S280.

[0046] In step S280, the frame F3 (refer to) in DP2 during the display period is... Figure 4 Compensation is performed. For example, in this embodiment, the timing controller 140 will, according to the first total weight value, cause the display liquid crystal LC of frame F3 in DP2 to display at the display frequency corresponding to the first total weight value during the display period, and cause the polarity of the display liquid crystal LC of frame F3 to be opposite to the polarity of the display liquid crystal LC in frame F2.

[0047] Please refer to the above as well. Figure 4 , Figure 4 This is a schematic diagram of polarity compensation for a display liquid crystal LC according to a partial embodiment of the present disclosure. Specifically, the timing controller 140 can detect, based on the data voltage output by the graphics processing unit 120, that the display frequency of the display liquid crystal LC in frame F1 is 60Hz and the display frequency of the display liquid crystal LC in frame F2 is 40Hz, and switch the display within a preset time DT. At this time, the timing controller 140 sums the first weight value and the second weight value to calculate the first total weight value within the preset time DT. For example, in this embodiment, the first weight value corresponding to 60Hz is +1, the second weight value corresponding to 40Hz is -2, and the first total weight value is -2. At this time, the timing controller 140 determines that the first total weight value exceeds the set threshold (e.g., -1), and the timing controller 140 calculates the unbalanced cycle.

[0048] When the imbalance cycle exceeds a set threshold (e.g., the set threshold is 2 times), the timing controller 140 compensates for the frame F3. For example, in this embodiment, the timing controller 140 sets the display liquid crystal LC in the frame F3 to a display frequency of 40Hz and a positive display polarity (in the first total weight value). Figure 4 (Represented by the symbol "+" in the text). Furthermore, frame F4 will be set accordingly to frame F3 so that the compensated second total weight value approaches zero. For example, in this embodiment, the display liquid crystal LC in frame F4 will be set to a display frequency of 60Hz and a negative display polarity (in... Figure 4 (The symbol "-" is used to indicate this). It is worth noting that the third weight value corresponding to the display frequency of 40Hz and the positive display polarity is +2, the fourth weight value corresponding to the display frequency of 60Hz and the negative display polarity is -1, and the second total weight value, the sum of the first and fourth weight values, is 0. Therefore, when the polarity of the display liquid crystal LC in frames F1 and F2 in DP1 is unbalanced during display, the timing controller 140 can immediately compensate frame F3 with the lowest frequency between the first and second display frequencies to balance the polarity of the display liquid crystal LC.

[0049] This disclosure provides a detection method in some embodiments. By setting multiple weights corresponding to different display frequencies and different display polarities, a timing controller (TCON) can calculate a first total weight value for a first frame and a second frame within a preset time period. Based on this first total weight value, the timing controller can determine whether the polarity of the display liquid crystal in the first and second frames is balanced. If the polarity of the display liquid crystal is unbalanced, the timing controller can adjust the display frequency and display polarity of the display liquid crystal to compensate for the imbalance. This effectively avoids flickering problems.

[0050] The foregoing outlines the features of several embodiments, enabling those skilled in the art to better understand the various aspects of this application. Those skilled in the art should understand that they can readily use this application as the basis for designing or modifying other processes and structures to achieve the same purposes and / or advantages of the embodiments introduced herein. Those skilled in the art should also recognize that such equivalent constructions do not depart from the spirit and scope of this application, and that various changes, substitutions, and modifications can be made herein without departing from the spirit and scope of this application.

Claims

1. A detection method, characterized in that, Applicable to a display device and a timing controller, the display device including a display panel including a liquid crystal display, the timing controller being used to execute the detection method, wherein the detection method includes: Define a first weight, wherein the first weight corresponds to a first display frequency and a first display polarity; A second weight is set, wherein the second weight corresponds to a second display frequency and a second display polarity; Based on the first weight and the second weight, it is determined whether the polarity of the display liquid crystal in one of the plurality of frames and one of the frames during a first display period is balanced; and If the polarity of the display liquid crystal in the first and second of the frames is unbalanced, compensation is made for one of the third frames during a second display period.

2. The detection method as described in claim 1, characterized in that, Including: A third weight is defined, wherein the third weight corresponds to the second display frequency and the first display polarity; and A fourth weight is set, wherein the fourth weight corresponds to the first display frequency and the second display polarity.

3. The detection method as described in claim 1, characterized in that, The operation of determining whether the polarity of the display liquid crystal in the first and second of the frames is balanced during the first display period includes: The detection measures whether the display LCD switches between the first display frequency and the second display frequency in the first and second frames of the picture frames, respectively; and If the display LCD is detected to switch between displaying at the first display frequency and the second display frequency in the first and second frames of the picture frames respectively, then a first total weight value is calculated within a preset time period.

4. The detection method as described in claim 3, characterized in that, The operation of calculating the first total weight value within the preset time period includes: Calculate the sum of the first weight and the second weight within the preset time period to obtain the first total weight value; Determine whether the first total weight value exceeds a set threshold; and If the first total weight value is determined to exceed the set threshold, the first total weight value and a judgment result are output.

5. The detection method as described in claim 4, characterized in that, The operation of determining whether the polarity of the display liquid crystal in the first and second of the frames is balanced during the first display period further includes: Based on the judgment result, an unbalanced cycle between the first and second frames is detected. Determine whether the unbalanced cycle exceeds a set threshold value; and If the imbalance cycle is determined to exceed the set threshold value, then it is determined that the polarity of the display liquid crystal in the first and second of the frames is unbalanced during the first display period.

6. The detection method as described in claim 5, characterized in that, The operation of detecting the imbalance cycle between the first and second frames includes: The number of times the first total weight value exceeds the set threshold is counted to obtain the imbalance cycle.

7. The detection method as described in claim 4, characterized in that, The operation of compensating the third party for the frames during the second display period includes: Based on the first total weight value, the display liquid crystal in the third party of the picture frames displays at a display frequency corresponding to the first total weight value.

8. The detection method as described in claim 7, characterized in that, The polarity of the liquid crystal display in the third of the frames during the second display period is opposite to the polarity of the liquid crystal display in the second of the frames during the first display period.

9. The detection method as described in claim 1, characterized in that, The first display frequency is greater than the second display frequency.

10. The detection method as described in claim 1, characterized in that, The polarity of the first display is opposite to that of the second display.

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