CN105469769B - Liquid crystal display panel and method for displaying images - Google Patents

Abstract

The invention discloses a liquid crystal display panel and a method for displaying pictures, belonging to the technical field of terminals. The liquid crystal display panel includes: a drive voltage acquisition module and a liquid crystal display panel module; the drive voltage acquisition module is electrically connected to the liquid crystal display panel module; the drive voltage acquisition module is used to acquire the gray scale value of the current display screen , determining a driving voltage value according to the grayscale value, and transmitting the driving voltage value to the liquid crystal display panel module; the liquid crystal display panel module is configured to generate a control signal according to the driving voltage value, and The current display image is displayed according to the control signal, and the control signal carries the driving voltage value. The invention can reduce the power consumption of the liquid crystal display panel.

Description

Liquid crystal display panel and method for displaying images

technical field

The invention relates to the technical field of terminals, in particular to a liquid crystal display panel and a method for displaying images.

Background technique

Liquid crystal display panels are widely used in computers due to many advantages such as thinness, no radiation, no flicker, and low energy consumption; the computer displays the current display screen for the user through the liquid crystal display panel.

The existing liquid crystal display panel includes: a battery management integrated circuit, a source drive circuit and a display screen; the battery management circuit is electrically connected to the source drive circuit, and the source drive circuit is electrically connected to the display screen; the battery management integrated circuit is used to generate control signals, and The control signal is transmitted to the source drive circuit, and the control signal carries the drive voltage value; the source drive circuit is used to set the positive voltage as the drive voltage value carried by the control signal, and set the negative voltage to zero, thereby driving the display screen to display the current display screen .

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

Since the driving voltage value carried by the control signal is fixed, when the display screen displays a picture with a lower gray scale, the fixed driving voltage value will cause a large power consumption of the liquid crystal display panel.

Contents of the invention

In order to reduce the power consumption of the liquid crystal display panel, the present invention provides a liquid crystal display panel and a method for displaying images. Described technical scheme is as follows:

On the one hand, an embodiment of the present invention provides a liquid crystal display panel, and the liquid crystal display panel includes: a driving voltage acquisition module and a liquid crystal display panel module;

The driving voltage acquisition module is electrically connected to the liquid crystal display panel module;

The driving voltage acquisition module is used to acquire the gray scale value of the current display screen, determine the driving voltage value according to the gray scale value, and transmit the driving voltage value to the liquid crystal display panel module;

The liquid crystal display panel module is configured to generate a control signal according to the driving voltage value, and display the current display image according to the control signal, and the control signal carries the driving voltage value.

Optionally, the driving voltage acquisition module includes a grayscale detection unit and a voltage acquisition unit;

The grayscale detection unit is electrically connected to the voltage acquisition unit, and the voltage acquisition unit is electrically connected to the liquid crystal display panel module;

The grayscale detection unit is used to obtain the grayscale value of the current display screen, and transmit the grayscale value to the voltage acquisition unit;

The voltage obtaining unit is configured to select a corrected gray-scale value from a gray-scale value list according to the gray-scale value; and obtain the corrected gray-scale value from the gray-scale value list according to the corrected gray-scale value the corresponding driving voltage value, and transmit the driving voltage value to the liquid crystal display panel module, and the gray scale value list is used to store the corresponding relationship between the corrected gray scale value and the driving voltage value.

Optionally, the driving voltage value includes a positive driving voltage value and a negative driving voltage value;

The voltage acquiring unit is specifically configured to acquire a positive driving voltage value and a negative driving voltage value corresponding to the corrected gray scale value from the gray scale value list according to the corrected gray scale value.

Optionally, the voltage acquisition unit is specifically configured to, according to the gray-scale value, select from the gray-scale value list a maximum corrected gray-scale value that is greater than or equal to the gray-scale value and smaller than the gray-scale value list. The corrected grayscale value of .

Optionally, the voltage acquiring unit is specifically configured to select a minimum corrected gray-scale value greater than or equal to the gray-scale value from a list of gray-scale values according to the gray-scale value.

Optionally, the driving voltage value includes a positive driving voltage value and a negative driving voltage value; the liquid crystal display panel module includes a battery management integrated circuit, a source driving circuit and a display screen;

The drive voltage acquisition module is electrically connected to the battery management circuit, the battery management circuit is electrically connected to the source drive circuit, and the source drive circuit is electrically connected to the display screen;

The battery management integrated circuit is configured to generate a control signal according to the positive driving voltage value and the negative driving voltage value, and transmit the control signal to the source driving circuit, the control signal carrying the positive a driving voltage value and the negative driving voltage value;

The source driving circuit is configured to set a positive voltage as the positive driving voltage value, and a negative voltage as the negative driving voltage value, and drive the display screen to display the current display image.

On the other hand, an embodiment of the present invention provides a method for displaying a picture, the method including:

Get the grayscale value of the current display screen;

determining a driving voltage value according to the gray scale value;

A control signal is generated according to the driving voltage value, and the current display image is displayed according to the control signal, and the control signal carries the driving voltage value.

Optionally, the determining the driving voltage value according to the gray scale value includes:

According to the gray scale value, a corrected gray scale value is selected from a gray scale value list, and the gray scale value list is used to store a corresponding relationship between the corrected gray scale value and the driving voltage value;

According to the modified gray scale value, the driving voltage value corresponding to the modified gray scale value is acquired from the gray scale value list.

Optionally, the driving voltage value includes a positive driving voltage value and a negative driving voltage value;

According to the corrected gray scale value, obtaining the driving voltage value corresponding to the corrected gray scale value from the gray scale value list includes:

According to the modified gray scale value, a positive driving voltage value and a negative driving voltage value corresponding to the modified gray scale value are acquired from the gray scale value list.

Optionally, according to the gray scale value, selecting a corrected gray scale value from a gray scale value list includes:

According to the gray scale value, a modified gray scale value greater than or equal to the gray scale value and smaller than a maximum modified gray scale value included in the gray scale value list is selected from the gray scale value list.

Optionally, according to the gray scale value, selecting a corrected gray scale value from the gray scale value list that is greater than or equal to the gray scale value and smaller than the maximum corrected gray scale value included in the gray scale value list includes :

According to the gray scale value, a minimum corrected gray scale value greater than or equal to the gray scale value is selected from the gray scale value list.

Optionally, the acquiring the grayscale value of the currently displayed image includes:

Select the maximum grayscale value from the currently displayed screen.

Optionally, the driving voltage value includes a positive driving voltage value and a negative driving voltage value;

The displaying the current display screen according to the control signal includes:

The positive voltage of the source driving circuit is set as the positive driving voltage value, and the negative voltage is set as the negative driving voltage value, so as to drive the display screen to display the current display image.

In the embodiment of the present invention, the driving voltage value is determined according to the grayscale value of the current display screen, and the current display screen is displayed according to the driving voltage value, thereby reducing the power consumption of the liquid crystal display panel.

Description of drawings

FIG. 1 is a schematic diagram of a first structure of a liquid crystal display panel provided in Embodiment 1 of the present invention;

FIG. 2 is a second structural schematic diagram of a liquid crystal display panel provided in Embodiment 1 of the present invention;

3 is a schematic diagram of a third structure of a liquid crystal display panel provided in Embodiment 1 of the present invention;

FIG. 4 is a schematic diagram of a source driving circuit provided by Embodiment 1 of the present invention;

FIG. 5 is a flow chart of a method for displaying a screen provided by Embodiment 2 of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example 1

Referring to Fig. 1, an embodiment of the present invention provides a liquid crystal display panel, including:

The driving voltage acquisition module 101 and the liquid crystal display panel module 102 ; the driving voltage acquisition module 101 and the liquid crystal display panel module 102 are electrically connected.

The driving voltage acquisition module 101 is configured to acquire the grayscale value of the current display screen, determine the driving voltage value according to the grayscale value, and transmit the driving voltage value to the liquid crystal display panel module 102 .

The liquid crystal display panel module 102 is used to receive the driving voltage value transmitted by the driving voltage acquisition module 101, generate a control signal according to the driving voltage value, and display the current display screen according to the control signal, and the control signal carries the driving voltage value.

Because the driving voltage acquisition module 101 determines the driving voltage value according to the grayscale value of the current display screen, the LCD panel module 102 displays the current display screen according to the driving voltage value, thereby reducing the power consumption of the LCD panel.

Referring to FIG. 2 , the driving voltage acquisition module 101 includes a grayscale detection unit 1011 and a voltage acquisition unit 1012 .

The grayscale detection unit 1011 is electrically connected to the voltage acquisition unit 1012 , and the voltage acquisition unit 1012 is electrically connected to the liquid crystal display panel module 102 .

The grayscale detection unit 1011 is configured to acquire the grayscale value of the currently displayed image, and transmit the grayscale value to the voltage acquisition unit 1012 .

Wherein, the current display picture may include multiple grayscale values. In the embodiment of the present invention, when the grayscale detection unit 1011 acquires the grayscale value of the current display picture, in order to meet the display requirements of the current display picture, the grayscale detection unit 1011 can select the maximum gray scale value from the current display screen. Of course, in order to improve efficiency, the grayscale detection unit 1011 may also randomly select a grayscale value from the currently displayed picture. In order to reduce the power consumption of the liquid crystal display panel to a greater extent, the grayscale detection unit 1011 may also select the minimum grayscale value from the currently displayed picture. In order to meet the display requirements of the current display picture and reduce the power consumption of the liquid crystal display panel, the grayscale detection unit 1011 can also calculate the average grayscale value of the current display picture.

The voltage acquisition unit 1012 is configured to receive the grayscale value transmitted by the grayscale detection unit 1011 , determine a driving voltage value according to the grayscale value, and transmit the driving voltage value to the liquid crystal display panel module 102 .

A liquid crystal display panel module 102 corresponds to a list of grayscale values. Correspondingly, the voltage obtaining unit 1012 is also used to obtain a list of grayscale values corresponding to the liquid crystal display panel module 102, store the list of grayscale values, and the list of grayscale values It is used to store the corresponding relationship between the gray scale value and the driving voltage value.

In order to save storage space and simplify the processing process, the gray scale value list does not store the corresponding relationship between all the gray scale values that may be displayed by the LCD panel and the driving voltage value, but only stores the corresponding relationship between some gray scale values and the driving voltage value , in the embodiment of the present invention, some gray scale values are referred to as corrected gray scale values, that is, the gray scale value list is used to store the corresponding relationship between the corrected gray scale values and the driving voltage values. When the voltage acquisition unit 1012 determines the driving voltage value according to the gray scale value, it first obtains the corrected gray scale value from the gray scale value list, and then obtains the driving voltage value corresponding to the corrected gray scale value from the gray scale value list.

Correspondingly, the voltage acquisition unit 1012 is further configured to select a modified gray scale value from the gray scale value list according to the gray scale value, and obtain the corrected gray scale value corresponding to the modified gray scale value from the gray scale value list according to the modified gray scale value. The driving voltage value, the gray scale value list is used to store the corresponding relationship between the corrected gray scale value and the driving voltage value.

In order to meet the display requirements of the current display screen, when the voltage acquisition unit 1012 selects a corrected gray-scale value from the gray-scale value list, it selects from the gray-scale value list the For the corrected gray scale value of the maximum corrected gray scale value, preferably, the minimum corrected gray scale value greater than or equal to the gray scale value is selected from the list of gray scale values.

Correspondingly, the voltage acquiring unit 1012 is specifically configured to, according to the gray-scale value, select a corrected gray-scale value that is greater than or equal to the gray-scale value and smaller than the maximum corrected gray-scale value included in the gray-scale value list from the gray-scale value list .

Preferably, the voltage acquiring unit 1012 is further configured to select the minimum corrected gray-scale value greater than or equal to the gray-scale value from the list of gray-scale values according to the gray-scale value.

The driving voltage value includes a positive driving voltage value and a negative driving voltage value; then the gray scale value list is used to store the corresponding relationship between the corrected gray scale value, the positive driving voltage value and the negative driving voltage value; correspondingly, the voltage acquisition unit 1012 also uses Then, according to the modified gray scale value, the positive driving voltage value and the negative driving voltage value corresponding to the modified gray scale value are obtained from the gray scale value list.

For example, Table 1 is a list of grayscale values provided by the embodiment of the present invention, which includes 9 corrected grayscale values, namely L0, L1, L31, L63, L127, L191, L223, L254 and L255; The drive voltage values are V1-V18 (V1-V18 decrease in turn).

Table 1

Correct the grayscale value Positive driving voltage value Negative drive voltage value L255 V1 V18 L254 V2 V17 L223 V3 V16 L191 V4 V15 L127 V5 V14 L63 V6 V13 L31 V7 V12 L1 V8 V11 L0 V9 V10

For example, the grayscale detection unit 1011 obtains the grayscale value of the current display screen as L185, and the grayscale detection unit 1011 transmits L185 to the voltage acquisition unit 1012; the voltage acquisition unit 1012 receives the L185 transmitted by the grayscale detection unit 1011, and according to the L185, from In Table 1, the corrected gray scale values greater than or equal to L185 and less than L255 are selected as L191, L223 and L254, and the voltage acquisition unit 1012 randomly selects a corrected gray scale value from the L191, L223 and L254, preferably, from the L191, L223 and L254. Select the minimum corrected grayscale value L191 from L223 and L254, and obtain the positive driving voltage value V4 and the negative driving voltage value V15 corresponding to the L191 from Table 1 according to the L191.

For another example, the grayscale detection unit 1011 obtains the grayscale value of the current display screen as L191, and the grayscale detection unit 1011 transmits L191 to the voltage acquisition unit 1012; the voltage acquisition unit 1012 receives the L191 transmitted by the grayscale detection unit 1011, and according to the L191, Select the corrected gray scale values greater than or equal to L191 and less than L255 from Table 1 to L191, L223 and L254, and the voltage acquisition unit 1012 randomly selects a corrected gray scale value from the L191, L223 and L254, preferably, from the L191 , L223 and L254 select the minimum corrected gray scale value L191, and according to the L191, obtain the positive driving voltage value V4 and the negative driving voltage value V15 corresponding to the L191 from Table 1.

Optionally, the grayscale value list is also used to store the corresponding relationship between the grayscale value range, the positive driving voltage value and the negative driving voltage value; correspondingly, the voltage acquisition unit 1012 is also used for Select the gray-scale value range where the gray-scale value is located in the list of gray-scale values, and obtain the selected gray-scale value from the corresponding relationship between the gray-scale value range, positive driving voltage value, and negative driving voltage value according to the selected gray-scale value range The value range corresponds to the positive drive voltage value and the negative drive voltage value.

For example, Table 2 is a list of grayscale values provided by the embodiment of the present invention, which includes 9 grayscale value ranges, respectively (0, L0], (L0, L1], (L1, L31], (L31, L63], (L63, L127], (L127, L191], (L191, L223), (L223, L254], (L254, L255], the driving voltage values are respectively V1 ~ V18 (V1 to V18 are sequentially reduced Small).

Table 2

Gray scale value range Positive driving voltage value Negative drive voltage value (L254, L255] V1 V18 (L223, L254] V2 V17 (L191, L223) V3 V16 (L127, L191] V4 V15 (L63, L127] V5 V14 (L31, L63] V6 V13 (L1, L31] V7 V12 (L0, L1] V8 V11 (0, L0] V9 V10

For example, the grayscale detection unit 1011 obtains the grayscale value of the current display screen as L185, and the grayscale detection unit 1011 transmits L185 to the voltage acquisition unit 1012; the voltage acquisition unit 1012 receives the L185 transmitted by the grayscale detection unit 1011, and according to the L185, from Select the gray scale value range (L127, L191] where L185 is located in Table 1, and according to the gray scale value range (L127, L191], obtain the positive driving voltage value corresponding to the gray scale value range (L127, L191] from Table 1 V4 and negative drive voltage value V15.

In order to improve the accuracy, the grayscale value list is also used for the corresponding relationship between each grayscale value, positive driving voltage value and negative driving voltage value included in the liquid crystal display panel; correspondingly, the voltage acquisition unit 1012 is also used to For the gray scale value, the positive driving voltage value and the negative driving voltage value corresponding to the gray scale value are acquired from the gray scale value list.

Optionally, the gray scale value list is also used to store the corresponding relationship between the corrected gray scale value, the positive drive offset voltage value, and the negative drive offset voltage value; correspondingly, the voltage acquisition unit 1012 is also used to scale value, and obtain the positive driving offset voltage value and the negative driving offset voltage value corresponding to the corrected gray scale value from the gray scale value list.

In the embodiment of the present invention, the voltage acquisition unit 1012 can determine the positive driving voltage value and the negative driving voltage value according to the positive driving offset voltage value and the negative driving offset voltage value, and determine the positive driving voltage value and the negative driving voltage value. The voltage value is transmitted to the LCD panel module 102 .

The voltage acquiring unit 1012 can also directly transmit the positive driving offset voltage value and the negative driving offset voltage value to the liquid crystal display panel module 102, and the liquid crystal display panel module 102 will Shift voltage value, determine positive drive voltage value and negative drive voltage value.

The voltage obtaining unit 1012 is further configured to calculate a positive driving voltage value and a negative driving voltage value according to the positive driving offset voltage value and the negative driving offset voltage value.

The voltage obtaining unit 1012 is also used to obtain a default positive driving voltage value and a negative driving voltage value, calculate the positive driving voltage difference between the default positive driving voltage value and the positive driving offset voltage value, and calculate the default negative driving voltage value The negative drive voltage difference between the voltage value and the negative drive offset voltage value, the positive voltage is reduced by the positive drive voltage difference to obtain the positive drive voltage value, and the negative voltage is increased by the negative drive voltage difference to obtain the negative drive voltage value .

The grayscale detection unit 1011 may be a Frame max gray detect (frame maximum grayscale detection) unit, and the voltage acquisition unit 1012 may be a binding point gamma (display parameter) voltage comparison unit.

Referring to FIG. 3 , the liquid crystal display panel module 102 includes a battery management integrated circuit 1021 , a source driving circuit 1022 and a display screen 1023 .

The driving voltage acquisition module 101 is electrically connected to the battery management circuit, the battery management circuit is electrically connected to the source driving circuit 1022 , and the source driving circuit 1022 is electrically connected to the display screen 1023 .

The battery management integrated circuit 1021 is configured to receive the positive driving voltage value and the negative driving voltage value transmitted by the driving voltage acquisition module 101, generate a control signal according to the positive driving voltage value and the negative driving voltage value, and transmit the control signal to The source driving circuit 1022, the control signal carries the positive driving voltage value and the negative driving voltage value.

The source driving circuit 1022 is configured to set the positive voltage as the positive driving voltage value, and the negative voltage as the negative driving voltage value, and drive the display screen 1023 to display the current display image.

Preferably, the voltage acquisition unit 1012 included in the driving voltage acquisition module 101 is electrically connected to the battery management circuit. Correspondingly, the battery management integrated circuit 1021 is also used to receive the positive driving voltage value and the negative driving voltage value sent by the voltage acquiring unit 1012 .

The source drive circuit 1022 includes an operational amplifier. Referring to FIG. 4, the operational amplifier includes an AVDD_H terminal and an AVDD_L terminal. The source drive circuit 1022 sets the AVDD_H of the operational amplifier to the positive drive voltage value, and sets AVDD_L to the negative drive voltage value, thereby The display screen 1023 is driven to display the current display screen.

Optionally, if the voltage acquisition unit 1012 transmits the positive drive offset voltage value and the negative drive offset voltage value to the liquid crystal display panel module 102; the battery management integrated circuit 1021 is also used to receive the positive drive voltage value transmitted by the drive voltage acquisition module 101 Offset voltage value and negative driving offset voltage value, generate a control signal according to the positive driving offset voltage value and negative driving offset voltage value, and transmit the control signal to the source driving circuit 1022, the control signal carries the positive Drive offset voltage value and negative drive offset voltage value.

The source driving circuit 1022 is further configured to receive the control signal transmitted by the battery management integrated circuit 1021, and obtain the positive driving offset voltage value and the negative driving offset voltage value from the control signal.

The source drive circuit 1022 is also used to obtain a default positive drive voltage value and a negative drive voltage value, calculate the positive drive voltage difference between the default positive drive voltage value and the positive drive offset voltage value, and calculate the default negative drive voltage value The negative drive voltage difference between the voltage value and the negative drive offset voltage value, the positive voltage is reduced by the positive drive voltage difference to obtain the positive drive voltage value, and the negative voltage is increased by the negative drive voltage difference to obtain the negative drive voltage value .

For example, the default positive drive voltage value is V1, and the default negative drive voltage value is V18, then set AVDD_H to AVDD-(V1-V4), and set AVDD_L to AGND+(V15-V18). It can be seen that the power consumption of the adjusted liquid crystal display panel is significantly reduced.

In the embodiment of the present invention, the driving voltage value is determined according to the grayscale value of the current display screen, and the current display screen is displayed according to the driving voltage value, thereby reducing the power consumption of the liquid crystal display panel.

Example 2

Referring to FIG. 5 , an embodiment of the present invention provides a method for displaying a picture, and the execution subject of the method may be the liquid crystal display panel provided in Embodiment 1, and the method includes:

Step 201: Obtain the gray scale value of the currently displayed image.

The current display picture may include multiple grayscale values. In the embodiment of the present invention, when the grayscale detection unit obtains the grayscale value of the current display picture, in order to meet the display requirements of the current display picture, the grayscale detection unit can select from the current Select the maximum gray scale value in the display screen. Certainly, in order to improve efficiency, the grayscale detection unit may also randomly select a grayscale value from the currently displayed picture. In order to reduce the power consumption of the liquid crystal display panel to a greater extent, the grayscale detection unit can also select the minimum grayscale value from the current display image. In order to meet the display requirements of the current display picture and reduce the power consumption of the liquid crystal display panel, the grayscale detection unit can also calculate the average grayscale value of the current display picture.

Step 202: Select a corrected gray scale value from the gray scale value list according to the gray scale value.

A liquid crystal display panel module corresponds to a list of grayscale values. Correspondingly, before this step, the list of grayscale values corresponding to the liquid crystal display panel module is obtained, and the list of grayscale values is stored. The list of grayscale values is used to store grayscale values. The corresponding relationship between the value and the driving voltage value.

In order to save storage space and simplify the processing process, the gray scale value list does not store the corresponding relationship between all the gray scale values that may be displayed by the LCD panel and the driving voltage value, but only stores the corresponding relationship between some gray scale values and the driving voltage value , in the embodiment of the present invention, some gray scale values are referred to as corrected gray scale values, that is, the gray scale value list is used to store the corresponding relationship between the corrected gray scale values and the driving voltage values.

In order to meet the display requirements of the current display screen, this step can be:

According to the grayscale value, select from the grayscale value list a corrected grayscale value that is greater than or equal to the grayscale value and smaller than the maximum corrected grayscale value included in the grayscale value list, preferably, select from the grayscale value list The minimum modified grayscale value greater than or equal to this grayscale value.

Optionally, the grayscale value list is also used to store the corresponding relationship between the grayscale value range, the positive driving voltage value and the negative driving voltage value; correspondingly, this step can be:

According to the grayscale value, select the grayscale value range where the grayscale value is located from the grayscale value list.

Step 203: Obtain the driving voltage value corresponding to the modified gray scale value from the gray scale value list according to the modified gray scale value.

The driving voltage value includes a positive driving voltage value and a negative driving voltage value; the gray scale value list is used to store the corresponding relationship between the corrected gray scale value, the positive driving voltage value and the negative driving voltage value; correspondingly, this step can be:

According to the modified gray scale value, the positive driving voltage value and the negative driving voltage value corresponding to the modified gray scale value are obtained from the gray scale value list.

If the grayscale value list is also used to store the corresponding relationship between the grayscale value range, the positive driving voltage value and the negative driving voltage value; correspondingly, this step can be:

According to the selected gray scale value range, the positive driving voltage value and the negative driving voltage value corresponding to the corrected gray scale value range are obtained from the gray scale value list.

In order to improve accuracy, the grayscale value list is also used for the corresponding relationship of each grayscale value, positive driving voltage value and negative driving voltage value included in the liquid crystal display panel; correspondingly, step 202 and step 203 can be replaced by:

According to the gray scale value, the positive driving voltage value and the negative driving voltage value corresponding to the gray scale value are obtained from the gray scale value list.

Optionally, the grayscale value list is also used to store the corresponding relationship between the corrected grayscale value, the positive driving offset voltage value, and the negative driving offset voltage value; correspondingly, this step can be:

According to the modified gray scale value, the positive driving offset voltage value and the negative driving offset voltage value corresponding to the modified gray scale value are obtained from the gray scale value list, and according to the positive driving offset voltage value and the negative driving offset voltage Calculate the positive drive voltage and negative drive voltage corresponding to the gray scale value.

Wherein, the step of calculating the positive driving voltage and the negative driving voltage corresponding to the gray scale value according to the positive driving offset voltage value and the negative driving offset voltage value may be:

Obtain the default positive drive voltage value and negative drive voltage value, calculate the positive drive voltage difference between the default positive drive voltage value and the positive drive offset voltage value, and calculate the default negative drive voltage value and the negative drive offset value The negative driving voltage difference of the voltage value is obtained by reducing the positive voltage by the positive driving voltage difference to obtain the positive driving voltage value, and increasing the negative voltage by the negative driving voltage difference to obtain the negative driving voltage value.

Step 204: Generate a control signal according to the driving voltage value.

Based on the positive drive voltage value and the negative drive voltage value, a control signal is generated, the control signal carrying the positive drive voltage value and the negative drive voltage value.

Optionally, after the positive driving offset voltage value and the negative driving offset voltage value are acquired in step 203, the positive driving offset voltage value corresponding to the grayscale value may not be calculated temporarily based on the positive driving offset voltage value and the negative driving offset voltage value. Drive voltage and negative drive voltage, directly load the positive drive offset voltage value and negative drive offset voltage value into the control signal, then this step can be:

A control signal is generated according to the positive drive offset voltage value and the negative drive offset voltage value, the control signal carrying the positive drive offset voltage value and the negative drive offset voltage value.

Step 205: Display the current display image according to the control signal.

The positive voltage of the source driving circuit is set to the positive driving voltage value, and the negative voltage is set to the negative driving voltage value, so as to drive the display screen to display the current display image.

If the control signal carries the positive driving offset voltage value and the negative driving offset voltage value. This step can be:

Obtain the default positive drive voltage value and negative drive voltage value, calculate the positive drive voltage difference between the default positive drive voltage value and the positive drive offset voltage value, and calculate the default negative drive voltage value and the negative drive offset value The negative driving voltage difference of the voltage value, the positive voltage is decreased by the positive driving voltage difference, and the negative voltage is increased by the negative driving voltage difference.

It should be noted that each frame of picture displayed by the liquid crystal display panel is displayed according to the method provided in Embodiment 2.

In the embodiment of the present invention, the driving voltage value is determined according to the grayscale value of the current display screen, and the current display screen is displayed according to the driving voltage value, thereby reducing the power consumption of the liquid crystal display panel.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (12)

1. A liquid crystal display panel, characterized in that, the liquid crystal display panel comprises: a driving voltage acquisition module and a liquid crystal display panel module; The driving voltage acquisition module is electrically connected to the liquid crystal display panel module; The driving voltage acquisition module is configured to acquire the grayscale value of the current display screen, and select from the grayscale value list according to the grayscale value the maximum Correcting the grayscale value of the corrected grayscale value, obtaining the driving voltage value corresponding to the corrected grayscale value from the grayscale value list according to the corrected grayscale value, and transmitting the driving voltage value to the liquid crystal Display panel module; the gray scale value list is used to store the corresponding relationship between the corrected gray scale value and the driving voltage value; The liquid crystal display panel module is configured to generate a control signal according to the driving voltage value, and display the current display image according to the control signal, and the control signal carries the driving voltage value. 2. The liquid crystal display panel according to claim 1, wherein the drive voltage acquisition module comprises a grayscale detection unit and a voltage acquisition unit; The grayscale detection unit is electrically connected to the voltage acquisition unit, and the voltage acquisition unit is electrically connected to the liquid crystal display panel module; The grayscale detection unit is used to obtain the grayscale value of the current display screen, and transmit the grayscale value to the voltage acquisition unit; The voltage obtaining unit is configured to select a corrected gray-scale value from a gray-scale value list according to the gray-scale value; and obtain the corrected gray-scale value from the gray-scale value list according to the corrected gray-scale value the corresponding driving voltage value, and transmit the driving voltage value to the liquid crystal display panel module, and the gray scale value list is used to store the corresponding relationship between the corrected gray scale value and the driving voltage value. 3. The liquid crystal display panel according to claim 2, wherein the driving voltage value comprises a positive driving voltage value and a negative driving voltage value; The voltage acquiring unit is specifically configured to acquire a positive driving voltage value and a negative driving voltage value corresponding to the corrected gray scale value from the gray scale value list according to the corrected gray scale value. 4. The liquid crystal display panel as claimed in claim 2, wherein, The voltage acquisition unit is specifically configured to, according to the gray-scale value, select a modified gray-scale from the gray-scale value list that is greater than or equal to the gray-scale value and smaller than the maximum corrected gray-scale value included in the gray-scale value list value. 5. The liquid crystal display panel as claimed in claim 4, characterized in that, The voltage acquiring unit is specifically configured to select a minimum corrected gray-scale value greater than or equal to the gray-scale value from a list of gray-scale values according to the gray-scale value. 6. The liquid crystal display panel according to claim 1, wherein the driving voltage value includes a positive driving voltage value and a negative driving voltage value; the liquid crystal display panel module includes a battery management integrated circuit, a source driving circuit and a display Screen; The drive voltage acquisition module is electrically connected to the battery management circuit, the battery management circuit is electrically connected to the source drive circuit, and the source drive circuit is electrically connected to the display screen; The battery management integrated circuit is configured to generate a control signal according to the positive driving voltage value and the negative driving voltage value, and transmit the control signal to the source driving circuit, the control signal carrying the positive a driving voltage value and the negative driving voltage value; The source driving circuit is configured to set a positive voltage as the positive driving voltage value, and a negative voltage as the negative driving voltage value, and drive the display screen to display the current display image. 7. A method for displaying a picture, characterized in that the method comprises: Get the grayscale value of the current display screen; determining a driving voltage value according to the grayscale value; generating a control signal according to the driving voltage value, and displaying the current display screen according to the control signal, the control signal carrying the driving voltage value; Wherein, the determining the driving voltage value according to the gray scale value includes: According to the gray scale value, a corrected gray scale value that is greater than or equal to the gray scale value and smaller than the maximum corrected gray scale value included in the gray scale value list is selected from the gray scale value list, and the gray scale value list uses To store the corresponding relationship between the corrected gray scale value and the driving voltage value; According to the modified gray scale value, the driving voltage value corresponding to the modified gray scale value is acquired from the gray scale value list. 8. The method according to claim 7, wherein the driving voltage value comprises a positive driving voltage value and a negative driving voltage value; According to the corrected gray scale value, obtaining the driving voltage value corresponding to the corrected gray scale value from the gray scale value list includes: According to the modified gray scale value, a positive driving voltage value and a negative driving voltage value corresponding to the modified gray scale value are acquired from the gray scale value list. 9. The method according to claim 7, wherein the selection of the corrected gray-scale value from the gray-scale value list according to the gray-scale value comprises: According to the gray scale value, a modified gray scale value greater than or equal to the gray scale value and smaller than a maximum modified gray scale value included in the gray scale value list is selected from the gray scale value list. 10. The method according to claim 9, characterized in that, according to the gray-scale value, selecting from the list of gray-scale values is greater than or equal to the gray-scale value and smaller than the maximum Modified grayscale values for corrected grayscale values, including: According to the gray scale value, a minimum corrected gray scale value greater than or equal to the gray scale value is selected from the gray scale value list. 11. The method according to claim 7, wherein said acquiring the grayscale value of the currently displayed picture comprises: Select the maximum grayscale value from the currently displayed screen. 12. The method according to claim 7, wherein the driving voltage value comprises a positive driving voltage value and a negative driving voltage value; The displaying the current display screen according to the control signal includes: The positive voltage of the source driving circuit is set as the positive driving voltage value, and the negative voltage is set as the negative driving voltage value, so as to drive the display screen to display the current display image.