The present disclosure relates to the field of display, and more particularly, relates to a display component compensation method and a display component compensation device.
Spread-spectrum technology is a common wireless communication technology that has been used in driving devices of conventional display panels. The spread-spectrum technology can reduce electromagnetic interference (EMI) due to a pulse peak when a clock generator operates on a motherboard. When an EMI problem does not happen, the spread-spectrum technology is in a non-working state, while when the EMI problem happens, the spread-spectrum technology is in a working state to reduce EMI.
In conventional display panels, even a minor shift of peak may cause a short burst of a clock signal, leading to an overclocked processor being locked. For example, as size and resolution of thin film transistor liquid crystal displays (TFT-LCDs) become increasingly large, processors thereof are easily overclocked, which causes the spread-spectrum technology to activate. However, a frequency of the spread-spectrum technology and a frequency of a clock signal are different, contributing to uneven charging between rows and generating a lot of light and dark intervals.
Therefore, it is necessary to provide a display component compensation method to solve the above technical problem.
The present disclosure provides a display component compensation method and a display component compensation device to solve a technical problem of uneven charging between rows in conventional display components.
The present disclosure provides a display component compensation method, including following steps:
receiving a first input voltage of a display component at time Tn, and obtaining a frequency value of a spread-spectrum component at the time Tn according to the first input voltage of the display component, wherein n is an integer;
obtaining a first charging time Ln1 of the display component at the time Tn according to the frequency value of the spread-spectrum component at the time Tn;
obtaining a first falling edge time of a first data signal of the display component and a second falling edge time of a first clock signal of the display component at the time Tn, and obtaining a second charging time Ln2 of the display component at the time Tn according to the first falling edge time of the first data signal and the second falling edge time of the first clock signal; and
obtaining the second falling edge time of the first clock signal of the display component at the time Tn according to a difference between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn.
In the display component compensation method, in the step of receiving the first input voltage of the display component at the time Tn, and obtaining the frequency value of the spread-spectrum component according to the first input voltage of the display component, the display component compensation method includes following steps:
receiving a video source signal of the display component at the time Tn, and obtaining the first input voltage according to the video source signal of the display component at the time Tn; and
reading the frequency value of the spread-spectrum component at the time Tn with a predetermined device according to the first input voltage of the display component at the time Tn.
The video source signal is emitted from a processor of the display component, and the first input voltage is an image digital signal voltage.
In the display component compensation method, in the step of obtaining the first falling edge time of the first data signal of the display component and the second falling edge time of the first clock signal of the display component at the time Tn, and obtaining the second charging time Ln2 of the display component at the time Tn according to the first falling edge time of the first data signal and the second falling edge time of the first clock signal, the display component compensation method includes following steps:
obtaining the first falling edge time of the first data signal of the display component at the time Tn;
obtaining the second falling edge time of the first clock signal of the display component at the time Tn;
obtaining the second charging time Ln2 of the display component at the time Tn according to a difference between the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
obtaining the first falling edge time of the first data signal of the display component at the time Tn;
obtaining a row signal of a plurality of data enable (DE) signals of the display component at the time Tn;
obtaining a rising edge time of the display component and a falling edge time corresponding to the rising edge time at the time Tn; and
obtaining the first falling edge time of the first data signal of the display component at the time Tn according to the row signal of the DE signals, the rising edge time of the display component, and the falling edge time corresponding to the rising edge time at the time Tn.
The first data signal is emitted from a source driving device in the display component.
In the display component compensation method, in the step of obtaining the second falling edge time of the first clock signal of the display component at the time Tn according to the difference between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn, the display component compensation method includes following steps:
obtaining a difference X between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn, and
adding the difference X and the first falling edge time of the first clock signal at the time Tn together, and obtaining the second falling edge time of the first clock signal of the display component at the time Tn.
The display component compensation method further includes following steps:
obtaining a first charging time Lm1 of the display component at time Tm, and making the first charging time Lm1 of the display component at an mth frame equal to the first charging time Ln1 of the display component at the time Tn, wherein m is an integer, but is not equal to n.
The disclosure further includes a display component compensation device, including a spread-spectrum obtaining module, a first charging time obtaining module, a second charging time obtaining module, and a compensation module.
The spread-spectrum obtaining module is configured to receive a first input voltage of a display component at time Tn, and is configured to obtain a frequency value of a spread-spectrum component at the time Tn according to the first input voltage of the display component, wherein n is an integer.
The first charging time obtaining module is configured to obtain a first charging time Ln1 of the display component according to the frequency value of the spread-spectrum component at the time Tn.
The second charging time obtaining module is configured to obtain a first falling edge time of a first data signal of the display component and a second falling edge time of a first clock signal of the display component at the time Tn, and is configured to obtain a second charging time Ln2 of the display component at the time Tn according to the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
The compensation module is configured to obtain the second falling edge time of the first clock signal of the display component according to a difference between the first charging time Ln1 and the second charging time Ln2 of the display component at the time Tn.
In the display component compensation device, the spread-spectrum module includes an input voltage obtaining unit and a spread-spectrum frequency obtaining unit.
The input voltage obtaining unit is configured to receive a video source signal of the display component at the time Tn, and is configured to obtain the first input voltage according to the video source signal of the display component at the time Tn.
The spread-spectrum frequency obtaining unit is configured to read the frequency value of the spread-spectrum component with a predetermined device according to the first input voltage of the display component at the time Tn.
The video source signal is emitted from a processor of the display component, and the first input voltage is an image digital signal voltage.
In the display component compensation device, the second charging time obtaining module includes a first falling edge obtaining unit, a second falling edge obtaining unit, and a second charging time obtaining unit.
The first falling edge obtaining time unit is configured to obtain the first falling e time of the first data signal of the display component at the time Tn.
The second falling edge obtaining time unit is configured to obtain the second edge time of the first clock signal of the display component at the time Tn.
The second charging time obtaining unit is configured to obtain the second charging time Ln2 of the display component at the time Tn according to a difference between the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
The first falling edge obtaining unit includes a row signal obtaining sub-unit, a data signal obtaining sub-unit, and a first falling edge obtaining sub-unit.
The row signal obtaining sub-unit is configured to obtain a row signal of a plurality of data enable (DE) signals of the display component at the time Tn.
The data signal obtaining sub-unit is configured to obtain a rising edge time of the display component and a falling edge time corresponding to the rising edge time at the time Tn.
The first falling edge obtaining sub-unit is configured to obtain the first falling edge time of the first data signal of the display component at the time Tn according to the row signal of the DE signal, the rising edge time of the display component, and the falling edge time corresponding to the rising edge time at the time Tn.
The first data signal is emitted from a source driving device in the display component.
In the display component compensation device, the compensation module includes a computing unit and a compensation unit.
The computing unit is configured to obtain a difference X between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn.
The compensation unit is configured to add the difference X and the first falling edge time of the first clock signal at the time Tn together, and is configured to obtain the second falling edge time of the first clock signal of the display component at the time Tn.
The display component compensation device further includes a modification module.
The modification module is configured to obtain a first charging time Lm1 of the display component at time Tm, and make the first charging time Lm1 of the display component at an mth frame equal to the first charging time Ln1 of the display component at the time Tn, wherein in is n is an integer, but is not equal to n.
Regarding the beneficial effects: in the present disclosure, an amount of a frequency of a spread-spectrum component and charging time corresponding to the frequency of the spread-spectrum component are obtained in advance. By comparing the charging time corresponding to the frequency of the spread-spectrum component with each charging time of a display component, a compensation value for each of the charging time of the display component can be obtained. Therefore, the charging time of the spread-spectrum component and each of the charging time of the display component can be equal, and technical problems of uneven charging between rows and light and dark intervals appearing on products can be eliminated.
Embodiments are further described below in detail with reference to accompanying drawings to make objectives, technical solutions, and effects of the present disclosure clearer and more precise. It should be noted that described embodiments are merely used to construct the present disclosure and are not intended to limit the present disclosure.
In conventional display panels, even a minor shift of peak may cause a short burst of a clock signal, leading to an overclocked processor being locked. For example, as size and resolution of thin film transistor liquid crystal displays (TFT-LCDs) become increasingly large, processors thereof are easily overclocked, which causes the spread-spectrum technology to activate. However, a frequency of the spread-spectrum technology and a frequency of a clock signal are different, which leads to uneven charging between rows and generates a lot of light and dark intervals. To solve the above problems, the present disclosure provides a display component compensation method and a display component compensation device.
Please refer to
S10: receiving a first input voltage of a display component at time Tn, and obtaining a frequency value of a spread-spectrum component at the time Tn according to the first input voltage of the display component, wherein n is an integer.
In the present embodiment, the S10 specifically includes following steps:
S101: receiving a video source signal of the display component at the time Tn, and obtaining the first input voltage according to the video source signal of the display component at the time Tn.
S102: reading the frequency value of the spread-spectrum component at the time Tn with a predetermined device according to the first input voltage of the display component at the time Tn.
In the S101 and the S102, please refer to
In conventional technologies, a VBO technology can maximally achieve a high-speed transport of 4.0 Gbps. Furthermore, it is widely used in ultra-high definition liquid crystal television fields due to its distinctive encoding that prevents a time delay problem between data and clock of a receiver. Typically, a VBO signal includes a data signal and a time control signal.
In addition, the display component of the present disclosure can directly read a clock (frequency value) of the spread-spectrum component in the display component according to an amount of the first input voltage. Typically, the spread-spectrum component is integrated in a timing controller, and is not described in detail in the present disclosure since it is a conventional technology.
S20: obtaining a first charging time Ln1 of the display component at the time Tn according to the frequency value of the spread-spectrum component at the time Tn.
In the S20, because different first input voltages correspond to different peak frequencies of the processor, an EMI problem due to a peak frequency of pulse may happen when the processor is overclocked. The spread-spectrum component of the present disclosure may reduce the EMI problem caused by a pulse by expanding an endurable frequency range of the display component, thereby preventing the EMI problem caused by an overclocked processor.
Furthermore, the S20 further includes a decision mechanism: when the frequency value of the spread-spectrum component is greater than a peak frequency of a processor, the spread-spectrum component is in a working state, and when the frequency value of the spread-spectrum component is less than or equal to the peak frequency of the processor, the spread-spectrum component is in a non-working state. However, even though the frequency value of the spread-spectrum component is less than or equal to the peak frequency of the processor, changes in frequency of the spread-spectrum component may affect the frequency of the processor to a certain degree, leading to uneven charging time of sub-pixels of the display component in different rows and resulting in light and dark strips appearing on products. Therefore, it is necessary to modify a clock signal of a gate driving device.
In the S20, a first charging time of the display component at time Tn may be directly obtained according to the frequency value of the spread-spectrum component at the time Tn. They have a one-to-one correspondence relationship, and can be directly processed in the display component.
S30: obtaining a first falling edge time of a first data signal of the display component and a second falling edge time of a first clock signal of the display component at the time Tn, and obtaining a second charging time Ln2 of the display component at the time Tn according to the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
In the present embodiment, the S30 specifically includes following steps:
S301: obtaining the first falling edge tune of the first data signal of the display component at the time Tn.
S302: obtaining the second falling edge time of the first clock signal of the display component at the time Tn.
S303: obtaining the second charging time Ln2 of the display component at the time Tn according to a difference between the first falling edge tune of the first data signal and the second falling edge time of the first clock signal.
In the present embodiment, the S301 specifically includes following steps:
S3011: obtaining a row signal of a plurality of data enable (DE) signals of the display component at the time Tn.
S3012: obtaining a rising edge time of the display component at the time Tn and a falling edge time corresponding to the rising edge time at the time Tn.
S3013: obtaining the first falling edge time of the first data signal of the display component at the time Tn according to the row signal of the DE signals, the rising edge time of the display component, and the falling edge time corresponding to the rising edge time at the time Tn.
In the present embodiment, the plurality of DE signals are emitted from the processor, and include a row signal and a column signal. Only the row signal of the DE signals needs to be recorded.
In the present embodiment, the first data signal is emitted from a source driving device of the display component.
There is a certain relationship between the first data signal and the DE signals. For example, a rising edge time of the DE signals is an output time of the first data signal, and may be a switch of the first data signal. Therefore, in the above steps, the rising edge time of the display component at the time Tn and a falling edge time corresponding to the rising edge time at the time Tn need to be obtained.
In addition, only when the DE signals are at the rising edge time will the first data signal be the DE signals. Therefore, only when the DE signals are at the rising edge time will a falling edge time corresponding to a rising edge time of the first data signal be the first falling edge time of the first data signal which is to be obtained by the above steps.
Please refer to
S40: obtaining the second failing edge time of the first clock signal of the display component at the time Tn according to a difference between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn.
In the present embodiment, the S40 specifically includes following steps:
S401: obtaining a difference X between the first chanting time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn.
S402: adding the difference X and the first falling edge time of the first clock signal at the time Tn together, and obtaining the second falling edge time of the first clock signal of the display component at the time Tn.
In the present embodiment, a compensation value (the difference X) of the charging time at the time Tn is obtained according to the first charging time Ln1 and the second charging time Ln2 of the display component at the time Tn obtained in the S20 and the S30 after an overclocked component is added.
In the above steps, the compensation value X of the charging time can be represented by an equation: X=Ln1−Ln2. When the compensation value X is positive, the second falling edge time of the first clock signal output by the gate driving circuit at the time Tn needs to be delayed, thereby enlarging the time interval tn, that is, enlarging a charging time of the display component at the time Tn. When the compensation value X is negative, the second falling edge time of the first clock signal output by the gate driving circuit at the time Tn needs to be brought forward, thereby enlarging the time intervals tn, that is, reducing the charging time of the display component at the time Tn. When the compensation X is 0, the second falling edge time of the first clock signal output by the gate driving circuit at the time Tn does not need to be modified.
In the present embodiment, the display component compensation method further includes following steps:
S50: obtaining a first charging time Lm1 of the display component at time Tm, and making the first charging time Lm1 of the display component at an mth frame equal to the first charging time Ln1 of the display component at the time Tn, wherein m is an integer, but is not equal to n.
An objective of the S50 is to modify the above steps. As shown in
In the present disclosure, an amount of a frequency of a spread-spectrum component and charging time corresponding to the frequency of the spread-spectrum component are obtained in advance. By comparing the charging time corresponding to the frequency of the spread-spectrum component with each charging time of a display component, a compensation value for each of the charging time of the display component can be obtained. Therefore, the charging time of the spread-spectrum component and the charging time of the display component can be equal, and technical problems of uneven charging between rows and light and dark intervals appearing on products can be eliminated.
Please refer to
The spread-spectrum obtaining module 21 is configured to receive a first input voltage of a display component at time Tn, and is configured to obtain a frequency value of a spread-spectrum component at the time Tn according to the first input voltage of the display component, wherein n is an integer.
The first charging time obtaining module 22 is configured to obtain a first charging time Ln1 of the display component according to the frequency value of the spread-spectrum component at the time Tn.
The second charging time obtaining module 23 is configured to obtain a first falling edge time of a first data signal of the display component and a second falling edge time of a first clock signal of the display component at the time Tn, and is configured to obtain a second charging time Ln2 of the display component at the time Tn according to the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
The compensation module 24 is configured to obtain the second falling edge time of the first clock signal of the display component according to a difference between the first charging time Ln1 and the second charging time Ln2 of the display component at the time Tn.
Please refer to
The input voltage obtaining unit 211 is configured to receive a video source signal of the display component at the time Tn, and is configured to obtain the first input voltage according to the video source signal of the display component at the time Tn.
The spread-spectrum frequency obtaining unit 212 is configured to read the frequency value of the spread-spectrum component with a predetermined device according to the first input voltage of the display component at the time Tn.
The video source signal is emitted from a processor of the display component, and the first input voltage is an image digital signal voltage.
Please refer to
The first falling edge obtaining time unit 231 is configured to obtain the first falling edge time of the first data signal of the display component at the time Tn.
The second falling edge obtaining time unit 232 is configured to obtain the second edge time of the first clock signal of the display component at the time Tn.
The second charging tune obtaining unit 233 is configured to obtain the second charging time Ln2 of the display component at the time Tn according to a difference between the first falling edge time of the first data signal and the second falling edge time of the first clock signal.
Please refer to
The row signal obtaining sub-unit 2311 is configured to obtain a row signal of a plurality of data enable (DE) signals of the display component at the time Tn.
The data signal obtaining sub-unit 2312 is configured to obtain a rising edge time of the display component and a falling edge time corresponding to the rising edge time at the time Tn.
The first falling edge obtaining sub-unit 2313 is configured to obtain the first falling edge time of the first data signal of the display component at the time Tn according to the row signal of the DE signals, the rising edge time of the display component, and the falling edge time corresponding to the rising edge time at the time Tn.
The first data signal is emitted from a source driving device in the display component.
Please refer to
The computing unit 241 is configured to obtain a difference X between the first charging time Ln1 of the display component and the second charging time Ln2 of the display component at the time Tn.
The compensation unit 242 is configured to add the difference X and the first falling edge time of the first clock signal at the time Tn together, and is configured to obtain the second falling edge time of the first clock signal of the display component at the time Tn.
Please refer to
The modification module 25 is configured to obtain a first charging time Lm1 of the display component at time Tm, and make the first charging time Lm1 of the display component at an mth frame equal to the first charging time Ln1 of the display component at the time Tn, wherein m is an integer, but is not equal to n.
In the present embodiment, a working principle of the compensation device 400 of the display component can be referred to the above display component compensation method, and is not described here in detail again.
The present disclosure provides a display component compensation method and a display component compensation device. The display component compensation method includes: obtaining a frequency value of a spread-spectrum component at time Tn; obtaining a first charge time Tn1 of the display component at the time Tn; obtaining a second charge time Tn2 of the display component at the time Tn; and obtaining a second falling edge time of a first clock signal of the display component at the time Tn according to a difference between the first charging time Tn1 and the second charging time Tn2 at the time Tn. In the present disclosure, an amount of a frequency of a spread-spectrum component and charging time corresponding to the frequency of the spread-spectrum component are obtained in advance. By comparing the charging time corresponding to the frequency of the spread-spectrum component with each charging time of a display component, a compensation value for each of the charging time of the display component can be obtained. Therefore, the charging time of the spread-spectrum component and the charging time of the display component can be equal, and technical problems of uneven charging between rows and light and dark intervals appearing on products can be eliminated.
In summary, many changes and modifications to the described embodiments can be carried out by those skilled in the art, and all such changes and modifications are intended to be included within the scope of the appended claims.
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PCT/CN2020/084164 | 4/10/2020 | WO | 00 |
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