Pixel charging method of display device and display device

Abstract

The invention discloses a pixel charging method of a display device and the display device. The method comprises the following steps: carrying out full-stage charging on a first row of pixels in a current charging period, and carrying out one-time charging on remaining rows of pixels in any time period in the current period; after the next charging period is started, secondary charging is carried out on the remaining row pixels in sequence according to the time period; full-stage charging is carried out on the first row of pixels in the current charging period, primary charging is carried out on the remaining rows of pixels in any time period in the current period, and after the next charging period starts, secondary charging is carried out on the remaining rows of pixels in sequence according to the time periods. The adjacent aerial pixels are coupled in one charging period and only in one charging stage, the coupling time is greatly shortened, and power consumption data are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen charging, and in particular to a pixel charging method for a display device and a display device. Background Art

[0002] Display devices, some medium and large sizes use pre-charging technology due to factors such as heavy load or high resolution, refer to Figure 1 and Figure 2 Taking the first row of pixels controlled by G1 as an example, existing pre-charging technology uses pre-charging from T1 to T3, with T4 being the final actual charging time. Similarly, for the second row of pixels controlled by G2, pre-charging occurs from T2 to T4, with T5 being the final actual charging time. This means that the final period before the gate voltage drops is when the actual voltage reaches the pixel potential. At this point, all source data lines, S1 to Sn, are pre-charged for three rows (using the 4H drive shown in the figure as an example). This long pre-charging time increases the data line load, and the frequent pre-charging also increases the coupling capacitance of the data lines.

[0003] Therefore, the existing pre-charging technology will increase the power consumption data of the display screen. When the power consumption data is increased, the power consumption of the display device will increase, which will reduce the consumer experience. Summary of the Invention

[0004] In the prior art, the pre-charging technology of the display device increases the coupling capacitance, resulting in increased power consumption.

[0005] To address the above problems, a pixel charging method and a display device are proposed. The method charges the first row of pixels in full stages during the current charging cycle, charges the remaining rows of pixels once at any time period during the current cycle, and then charges the remaining rows of pixels a second time in sequence according to the time period after the next charging cycle begins. This ensures that adjacent pixels are coupled in only one charging stage during a charging cycle, greatly reducing the coupling time and power consumption.

[0006] In a first aspect, a pixel charging method for a display device includes: Step 100: Full-stage charging is performed on the first row of pixels in the current charging cycle, and the remaining rows of pixels are charged once at any time period in the current cycle; Step 200: After the next charging cycle begins, recharging the remaining rows of pixels in sequence according to the time period; Step 300: Repeat steps 100-200.

[0007] In conjunction with the pixel charging method for a display device according to the first aspect of the present invention, in a first possible implementation, step 100 includes: Step 110: Obtain a charging cycle and the corresponding number of pixel rows to be charged, wherein the number of pixel rows is four; Step 120: Divide the charging cycle into four charging stages according to the number of pixel rows.

[0008] In conjunction with the first possible implementation of the first aspect of the present invention, in a second possible implementation, step 100 further includes: Step 130 : In the first charging stage of the charging cycle, turn on the high level to charge all four rows of pixels; Step 140 : Continue to turn on the high level to charge the first row of pixels during the second charging stage, the third charging stage, and the fourth charging stage of the charging cycle.

[0009] In combination with the first possible implementation of the first aspect of the present invention, in a third possible implementation, step 100 further includes: Step 150: Turn on the high level in the current charging cycle to perform full-stage charging on the first row of pixels; Step 160 : Turning on a high level in the second charging stage, the third charging stage, or the fourth charging stage of the charging cycle to perform initial charging on the second row of pixels, the third row of pixels, and the fourth row of pixels.

[0010] In combination with the third possible implementation manner of the first aspect of the present invention, in a fourth possible implementation manner, step 200 includes: Step 210 : After the next charging cycle begins, starting from the first charging stage, the second row of pixels, the third row of pixels, and the fourth row of pixels are recharged in sequence.

[0011] In a second aspect, a display device adopts the pixel charging method of the display device described in the first aspect, comprising: pixel array; Multiple GOA units; control unit; The pixel array includes pixel units, multiple rows of gate lines, and multiple columns of data lines; The pixel units of each row of the pixel array are electrically connected to the gate lines of the corresponding row; The pixel units of each column of the pixel array are electrically connected to the data lines of the corresponding column; The control unit is electrically connected to each column data line and is electrically connected to the row gate line through the GOA unit; The control unit is used for: The first row of pixels is fully charged in the current charging cycle, the remaining rows of pixels are charged once in any time period in the current cycle, and after the next charging cycle starts, the remaining rows of pixels are charged twice in sequence according to the time period.

[0012] In conjunction with the display device described in the second aspect of the present invention, in a first possible implementation manner, the control unit is further configured to: divide the charging cycle into four charging stages according to the number of pixel rows.

[0013] In combination with the first possible implementation manner of the second aspect of the present invention, in a second possible implementation manner, the control unit is further used to: in the first charging stage of the charging cycle, turn on the high level to charge all four rows of pixels; and continue to turn on the high level to charge the first row of pixels in the second charging stage, the third charging stage, and the fourth charging stage of the charging cycle.

[0014] In conjunction with the first possible implementation manner of the second aspect of the present invention, in a third possible implementation manner, the control unit is further configured to: Turning on the high level in the current charging cycle to perform full-stage charging on the first row of pixels; In the second charging stage, the third charging stage or the fourth charging stage of the charging cycle, the high level is turned on to charge the second row of pixels, the third row of pixels and the fourth row of pixels for the first time.

[0015] In combination with the third possible implementation manner of the second aspect of the present invention, in a fourth possible implementation manner, the control unit is further used to: after the start of the next charging cycle, starting from the first charging stage, sequentially perform secondary charging on the second row of pixels, the third row of pixels, and the fourth row of pixels.

[0016] The pixel charging method and display device of a display device described in the present invention are implemented by charging the first row of pixels in full stages in the current charging cycle, charging the remaining rows of pixels once in any time period in the current cycle, and after the next charging cycle starts, charging the remaining rows of pixels twice in sequence according to the time period. This achieves that adjacent pixels are coupled in only one charging stage in a charging cycle, greatly reducing the coupling time and reducing power consumption data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a charging timing diagram of an existing display device; Figure 2 This is a first charging timing diagram of the pixel charging method of the display device in this application; Figure 3 is a second charging timing diagram of the pixel charging method of the display device in this application; Figure 4 This is a flowchart of a specific embodiment of the pixel charging method for a display device in the present application; Figure 5 yes Figure 4 A schematic flow chart of a specific embodiment of step 100; Figure 6 yes Figure 5 A schematic flow chart of a specific embodiment after step 120; Figure 7 yes Figure 6 A schematic flow chart of a specific embodiment after step 140; Figure 8 is a schematic diagram of a specific embodiment of the display device in this application; Figure 9 It is a circuit schematic diagram of a pixel array in the display device in this application. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0024] In the prior art, the pre-charging technology of the display device increases the coupling capacitance, resulting in increased power consumption.

[0025] To address the above problems, a pixel charging method for a display device and a display device are proposed.

[0026] In a first aspect, a pixel charging method for a display device is provided. Figure 4 , Figure 4 : is a flowchart of a specific embodiment of the pixel charging method of the display device in this application, including: Step 100: Full-stage charging is performed on the first row of pixels in the current charging cycle, and the remaining rows of pixels are charged once in any time period in the current cycle.

[0027] In one embodiment, Figure 5 , Figure 5 yes Figure 4 A flow chart of a specific embodiment of step 100 is shown in FIG. 1 ; step 100 includes: Step 110 , obtaining a charging cycle and a corresponding number of pixel rows to be charged, wherein the number of pixel rows is four; Step 120 , dividing the charging cycle into four charging stages according to the number of pixel rows.

[0028] In this embodiment, one charging cycle is divided into four charging stages, and four rows of pixels are charged.

[0029] In one embodiment, Figure 6 , Figure 6 yes Figure 5 A flow chart of a specific embodiment after step 120; step 100 also includes: Step 130 , in the first charging stage of the charging cycle, turn on the high level to charge all four rows of pixels; Step 140 , in the second charging stage, the third charging stage, and the fourth charging stage of the charging cycle, continue to turn on the high level to charge the first row of pixels.

[0030] In this embodiment, if Figure 2 , Figure 2 This is the first charging timing diagram of the pixel charging method of the display device in the present application; taking G1-G4 as an example, the pixels of the G1 row are charged in the T1-T4 stage of the first charging cycle, G2-G4 are charged for the first time in the T1 stage, and G2-G4 are charged for the second time in the T5-T7 stage of the next cycle. This is beneficial to reduce the coupling between the row pixel loads during the charging process and reduce power consumption.

[0031] In one embodiment, Figure 7 , Figure 7 yes Figure 6 Schematic diagram of a specific embodiment of the process flow after step 140 in step 100; step 100 further includes: step 150, turning on the high level in the current charging cycle to fully charge the first row of pixels; step 160, turning on the high level in the second, third, or fourth charging phases of the charging cycle to initially charge the second, third, and fourth rows of pixels. This helps reduce coupling between row pixel loads during the charging process, thereby reducing power consumption.

[0032] In this embodiment, Figure 3 This is the second charging timing diagram of the pixel charging method for the display device in this application. In this embodiment, G2-G4 are initially charged during the T2 phase, and are recharged during the T5-T7 phase of the next cycle. Alternatively, G2-G4 are initially charged during the T3 or T4 phase, and recharged during the T5-T7 phase of the next cycle.

[0033] Step 200: After the next charging cycle begins, recharging the remaining rows of pixels sequentially according to the time period. In one embodiment, step 200 includes: Step 210: After the next charging cycle begins, recharging the second row of pixels, the third row of pixels, and the fourth row of pixels sequentially starting from the first charging stage. Step 300: Repeating steps 100-200.

[0034] In an embodiment of the present application, by fully charging the first row of pixels in the current charging cycle, charging the remaining rows of pixels once in any time period in the current cycle, and after the next charging cycle starts, charging the remaining rows of pixels a second time in sequence according to the time period, adjacent pixels are coupled only in one charging stage in a charging cycle, which greatly reduces the coupling time and reduces the power consumption data.

[0035] In a second aspect, a display device, such as Figure 8 , Figure 8 Schematic diagram of a specific embodiment of the display device in the present application; the pixel charging method of the display device of the first aspect includes a pixel array 402, a plurality of GOA units 401, and a control unit 403; Figure 9 , Figure 9 This is a circuit schematic diagram of a pixel array in a display device in the present application. Pixel array 402 includes pixel cells, multiple rows of gate lines, and multiple columns of data lines. The pixel cells in each row of the pixel array are electrically connected to the gate lines of the corresponding row. The pixel cells in each column of the pixel array are electrically connected to the data lines of the corresponding column. The pixel cells in each row of the pixel array are electrically connected to the gate lines of the corresponding row. The pixel cells in each column of the pixel array are electrically connected to the data lines of the corresponding column. A control unit is electrically connected to each column of data lines and to the row gate lines via a GOA unit. The control unit is configured to fully charge the first row of pixels during the current charging cycle, charge the remaining rows of pixels once at any time period within the current cycle, and, after the next charging cycle begins, recharge the remaining rows of pixels sequentially according to their time periods.

[0036] Furthermore, the control unit is further configured to: divide the charging cycle into four charging stages according to the number of pixel rows.

[0037] Furthermore, the control unit is further used to: turn on the high level to charge all four rows of pixels in the first charging stage of the charging cycle; continue to turn on the high level to charge the first row of pixels in the second charging stage, third charging stage, and fourth charging stage of the charging cycle.

[0038] Furthermore, the control unit is further used to turn on a high level in the current charging cycle to charge the first row of pixels in the full stage; and turn on a high level in the second charging stage, the third charging stage or the fourth charging stage of the charging cycle to charge the second row of pixels, the third row of pixels and the fourth row of pixels for the first time.

[0039] Furthermore, the control unit is further configured to: after the next charging cycle begins, starting from the first charging stage, sequentially perform secondary charging on the second row of pixels, the third row of pixels, and the fourth row of pixels.

[0040] A pixel charging method and a display device of the present invention are implemented. By fully charging the first row of pixels in the current charging cycle, charging the remaining rows of pixels once in any time period in the current cycle, and after the next charging cycle starts, charging the remaining rows of pixels twice in sequence according to the time period, adjacent pixels are coupled only in one charging stage in a charging cycle, which greatly reduces the coupling time and reduces the power consumption data.

[0041] The above 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 should be included in the scope of protection of the present invention.

Claims

1. A pixel charging method for a display device, characterized in that: include: Step 100: Full-stage charging is performed on the first row of pixels in the current charging cycle, and the remaining rows of pixels are charged once at any time period in the current cycle; Step 200: After the next charging cycle begins, recharging the remaining rows of pixels in sequence according to the time period; Step 300: Repeat steps 100-200.

2. The pixel charging method of a display device according to claim 1, wherein: The step 100 includes: Step 110: Obtain a charging cycle and the corresponding number of pixel rows to be charged, wherein the number of pixel rows is four; Step 120: Divide the charging cycle into four charging stages according to the number of pixel rows.

3. The pixel charging method of a display device according to claim 2, wherein: The step 100 further includes: Step 130 : In the first charging stage of the charging cycle, turn on the high level to charge all four rows of pixels; Step 140 : Continue to turn on the high level to charge the first row of pixels during the second charging stage, the third charging stage, and the fourth charging stage of the charging cycle.

4. The pixel charging method of a display device according to claim 2, wherein: The step 100 further includes: Step 150: Turn on the high level in the current charging cycle to perform full-stage charging on the first row of pixels; Step 160 : Turning on a high level in the second charging stage, the third charging stage, or the fourth charging stage of the charging cycle to perform initial charging on the second row of pixels, the third row of pixels, and the fourth row of pixels.

5. The pixel charging method of a display device according to claim 3 or 4, characterized in that: The step 200 includes: Step 210 : After the next charging cycle begins, starting from the first charging stage, the second row of pixels, the third row of pixels, and the fourth row of pixels are recharged in sequence.

6. A display device, using the pixel charging method of a display device according to any one of claims 1 to 5, characterized in that: include: pixel array; Multiple GOA units; control unit; The pixel array includes pixel units, multiple rows of gate lines, and multiple columns of data lines; The pixel units of each row of the pixel array are electrically connected to the gate lines of the corresponding row; The pixel units of each column of the pixel array are electrically connected to the data lines of the corresponding column; The control unit is electrically connected to each column data line and is electrically connected to the row gate line through the GOA unit; The control unit is used for: The first row of pixels is fully charged in the current charging cycle, the remaining rows of pixels are charged once in any time period in the current cycle, and after the next charging cycle starts, the remaining rows of pixels are charged twice in sequence according to the time period.

7. The display device according to claim 1, wherein The control unit is further configured to divide the charging cycle into four charging stages according to the number of pixel rows.

8. The display device according to claim 7, wherein: The control unit is further used to: turn on the high level to charge all four rows of pixels in the first charging stage of the charging cycle; and continue to turn on the high level to charge the first row of pixels in the second charging stage, the third charging stage, and the fourth charging stage of the charging cycle.

9. The display device according to claim 7, wherein: The control unit is further configured to: Turning on the high level in the current charging cycle to perform full-stage charging on the first row of pixels; In the second charging stage, the third charging stage or the fourth charging stage of the charging cycle, the high level is turned on to charge the second row of pixels, the third row of pixels and the fourth row of pixels for the first time.

10. The display device according to claim 8 or 9, characterized in that: The control unit is further configured to: after the next charging cycle begins, starting from the first charging stage, sequentially perform secondary charging on the second row of pixels, the third row of pixels, and the fourth row of pixels.

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