CN115240608B - Display panel, display driving method and display touch device - Google Patents
Display panel, display driving method and display touch device Download PDFInfo
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- CN115240608B CN115240608B CN202210814952.1A CN202210814952A CN115240608B CN 115240608 B CN115240608 B CN 115240608B CN 202210814952 A CN202210814952 A CN 202210814952A CN 115240608 B CN115240608 B CN 115240608B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Position Input By Displaying (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The disclosure provides a display panel, a display driving method and a display touch device. The display panel includes: a plurality of pixel structures, a plurality of display data signal lines and at least one noise reduction compensation electrode, wherein the display data signal lines are used for writing display data voltages to the pixel structures, the plurality of pixel structures share a common electrode, the noise reduction compensation electrode is coupled with the common electrode to form a capacitor, and the noise reduction compensation electrode is used for inhibiting voltage fluctuation on the common electrode caused by the display data signal lines; when the average value of the display data voltages on the plurality of display data signal lines is stable and unchanged, the voltage value on the noise reduction compensation electrode is stable and unchanged, and when the average value of the display data voltages on the plurality of display data signal lines jumps, the voltage value on the noise reduction compensation electrode jumps to the opposite direction. The voltage fluctuation of the common electrode in the display panel is suppressed, so that the interference of the common electrode to the touch electrode can be reduced.
Description
Technical Field
The disclosure belongs to the technical field of display and touch control, and particularly relates to a display panel, a display driving method and a display touch control device.
Background
This section is intended to provide a background or context for the embodiments recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
The display panel is, for example, a liquid crystal display panel, a light emitting diode display panel, or the like. The light emitting diode display panel is, for example, an Organic Light Emitting Diode (OLED) display panel, a Micro light emitting diode (Micro-LED) display panel, a Mini light emitting diode (Mini-LED) display panel, or the like.
Touch electrodes are generally integrated in the display panel or an externally hung touch panel is attached to the display panel. There is a need to reduce the interference of the display panel to the touch electrode or touch panel.
Disclosure of Invention
The disclosure provides a display panel, a display driving method and a display touch device.
The technical scheme adopted by the present disclosure is as follows: a display panel, comprising: a plurality of pixel structures, a plurality of display data signal lines and at least one noise reduction compensation electrode, wherein the display data signal lines are used for writing display data voltages to the pixel structures, the plurality of pixel structures share a common electrode, the noise reduction compensation electrode is coupled with the common electrode to form a capacitor, and the noise reduction compensation electrode is used for inhibiting voltage fluctuation on the common electrode caused by the display data signal lines;
Wherein the noise reduction compensation electrode is configured to: when the average value of the display data voltages on the plurality of display data signal lines is stable and unchanged, the voltage value on the noise reduction compensation electrode is stable and unchanged, and when the average value of the display data voltages on the plurality of display data signal lines jumps, the voltage value on the noise reduction compensation electrode jumps to the opposite direction.
In some embodiments, the pixel structures are arranged in an array, and the steady state voltage value on the at least one noise reduction compensation electrode (22) satisfies the following formula:
Wherein Comp (m) is a voltage value of a steady state on the at least one noise reduction compensation electrode (22) in a row period of writing display data voltages to the mth row pixel structure, D m,n is a display data voltage required to be written to the mth row pixel structure, k is a positive scaling factor, C is a constant, and N is a column number of the pixel structure.
In some embodiments, the display panel further includes a driving back plate on which the pixel structure is disposed, the display data signal lines being located in the driving back plate.
In some embodiments, the noise reduction compensation electrode is disposed in the drive backplate.
In some embodiments, the noise reduction compensation electrode is disposed at the same layer as the display data signal line.
In some embodiments, the noise reduction compensation electrode is alternately spaced apart from the display data signal line.
In some embodiments, the noise reduction compensation electrode is disposed on a side of the common electrode remote from the driving back plate.
In some embodiments, the display panel further includes a plurality of encapsulation layers stacked to cover the light emitting element, and the noise reduction compensation electrode is disposed between two adjacent encapsulation layers of the plurality of encapsulation layers.
In some embodiments, the display panel further includes at least one encapsulation layer covering the light emitting element, and the noise reduction compensation electrode is disposed on a side of the at least one encapsulation layer away from the driving back plate.
In some embodiments, the at least one noise reduction compensation is in a grid or sheet form, and the at least one noise reduction compensation electrode is integrally connected.
The technical scheme adopted by the present disclosure is as follows: a display touch device, comprising: the display panel includes: the touch electrode is integrated in the display panel or the touch panel is hung outside the display panel.
The technical scheme adopted by the present disclosure is as follows: a display driving method for driving the display panel, the method comprising:
providing display data voltages to the plurality of display data signal lines, respectively;
Providing a compensation voltage signal to the at least one noise reduction compensation electrode;
when the average value of the display data voltages provided to the plurality of display data signal lines is stable and unchanged, the voltage value of the compensation voltage signal is stable and unchanged, and when the average value of the display data voltages provided to the plurality of display data signal lines jumps, the voltage value of the compensation voltage signal jumps to the opposite direction so as to inhibit the fluctuation of the voltage on the common electrode caused by the display data signal lines.
In some embodiments, the pixel structures are arranged in an array, and the voltage value on the at least one noise reduction compensation electrode (22) satisfies the following formula:
Wherein Comp (m) is a voltage value of a compensation voltage signal provided to the at least one noise reduction compensation electrode (22) in a row period of writing a display data voltage to the mth row pixel structure, D m,n is a display data voltage required to be written to the mth row pixel structure, k is a positive scaling factor, C is a constant, and N is a column number of the pixel structure.
Drawings
Fig. 1 is a schematic structural view of a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural view of a display panel according to another embodiment of the present disclosure.
Fig. 3 is a schematic structural view of a display panel according to another embodiment of the present disclosure.
Fig. 4 is a flowchart of a display driving method according to an embodiment of the present disclosure.
Fig. 5 is a waveform diagram of a display driving method according to an embodiment of the present disclosure.
Wherein the appendage is marked as follows: 1. a substrate; 2. a driving circuit layer; 21. a display data signal line; 22. a noise reduction compensation electrode; 31. a light emitting layer; 32. a common electrode; 33. a pixel electrode; 41. 42, 43, encapsulation layer; 44. a cover layer; 45. a buffer layer; 46. a planarization layer; 5. a pixel definition layer; 61. a touch buffer layer; 62. a touch insulating layer; 71. 72, touch electrode.
Detailed Description
The disclosure is further described below with reference to the embodiments shown in the drawings.
Fig. 1 is a schematic structural view of a display panel according to an embodiment of the present disclosure. Fig. 2 is a schematic structural view of a display panel according to another embodiment of the present disclosure. Fig. 3 is a schematic structural view of a display panel according to another embodiment of the present disclosure. Referring to fig. 1 to 3, an embodiment of the present disclosure provides a display panel including: a plurality of pixel structures, a plurality of display data signal lines 21 and at least one noise reduction compensation electrode 22, wherein the display data signal lines 21 are used for writing display data voltages to the pixel structures, the plurality of pixel structures share one common electrode 32, the noise reduction compensation electrode 22 is coupled with the common electrode 32 to form a capacitor, and the noise reduction compensation electrode 22 is used for inhibiting voltage fluctuation on the common electrode 32 caused by the display data signal lines 21;
when the average value of the display data voltages on the plurality of display data signal lines 21 is stable and unchanged, the voltage value on the noise reduction compensation electrode 22 is stable and unchanged, and when the average value of the display data voltages on the plurality of display data signal lines 21 jumps, the voltage value on the noise reduction compensation electrode 22 jumps in the opposite direction.
In some embodiments, the display panel is a liquid crystal display panel. Wherein the single pixel structure comprises at least a pixel electrode 33, a common electrode 32 and a liquid crystal layer therebetween.
In some embodiments, the display panel is an organic light emitting diode display panel. Wherein the single pixel structure includes at least a pixel electrode 33, a common electrode 32, and an organic light emitting layer 31 therebetween. In these embodiments, the common electrode 32 generally serves as a common cathode.
In other embodiments, the display panel is a micro light emitting diode display panel or a mini light emitting diode display panel. Wherein the single pixel structure comprises at least a pixel electrode 33, a common electrode 32 and a light emitting diode chip therebetween. In these embodiments, the common electrode 32 generally serves as a common cathode.
While in other embodiments the display panel is an electrowetting display panel. Wherein the single pixel structure comprises at least a pixel electrode 33, a common electrode 32, a polar liquid and a non-polar liquid between the pixel electrode 33 and the common electrode 32, and a hydrophobic layer covering the pixel electrode 33.
In these display panels, the voltage signal on each display data signal line 21 remains unchanged for a substantial portion of each row period, and the data voltage on each display data signal line 21 may jump at the interface between two consecutive row periods. Since parasitic capacitance is inevitably generated between the display data signal line 21 and the common electrode 32, frequent transitions of the voltage signal on the display data signal line 21 easily cause fluctuations in the voltage on the common electrode 32. When the touch electrode is integrated in the display panel or the touch panel is hung on the display panel, the voltage fluctuation on the common electrode 32 easily interferes with the touch electrode, and generates a larger noise signal.
The trend of the voltage on the noise reduction compensation electrode 22 is opposite to the trend of the average voltage on the display data signal line 21.
For example, when the average voltage on the display data signal line 21 increases, the voltage on the noise reduction compensation electrode 22 appropriately decreases; when the average voltage on the display data signal line 21 decreases, the voltage on the noise reduction compensation electrode 22 appropriately increases, thereby suppressing fluctuation of the voltage on the common electrode 32 due to fluctuation of the average voltage on the display data signal line 21.
Noise intensity on the common electrode 32 is reduced, so that signal-to-noise ratio of a touch signal (whether finger touch or capacitive active pen touch) can be improved, and probability of point-shaking and false-alarm is reduced. This enables the display panel to support a variety of active pen protocols such as MPP, HPP, USI and finger touch functions.
Specifically, the pixel structures are arranged in an array. The steady state voltage value on the at least one noise reduction compensation electrode (22) satisfies the following formula:
Wherein Comp (m) is a voltage value of a steady state on the at least one noise reduction compensation electrode (22) in a row period of writing display data voltages to the mth row pixel structure, D m,n is a display data voltage required to be written to the mth row pixel structure, k is a positive scaling factor, C is a constant, and N is a column number of the pixel structure.
In some embodiments, referring to fig. 1 to 3, the display panel further includes a driving back plate on which the pixel structure is disposed, and the display data signal line 21 is located in the driving back plate.
Specifically, in the embodiment shown in fig. 1 to 3, the pixel structure includes a light emitting element. The light emitting element is an organic light emitting diode, which includes a common electrode 32, a pixel electrode 33, and a light emitting layer 31 therebetween. The pixel defining layer 5 defines a spatial region of the light emitting layer 31. In some embodiments, the material of the pixel definition layer 5 comprises: an exposable developable transparent resin material.
In some embodiments, referring to fig. 1, noise reduction compensation electrodes 22 are provided in the drive backplate. The driving back plate includes a substrate 1 and a driving circuit layer 2.
In some embodiments, the substrate 1 is a glass substrate 1 or a flexible substrate 1. The material of the flexible substrate 1 is, for example, polyimide (PI).
A plurality of wirings (display data signal lines 21, gate lines, and the like) and pixel circuits each driving one pixel electrode 33 are provided in the driving circuit layer 2. The present disclosure does not limit the design of the driving circuit.
In some embodiments, referring to fig. 1, the noise reduction compensation electrode 22 is disposed at the same layer as the display data signal line 21. Of course, the noise reduction compensation electrode 22 may be disposed on other wiring layers of the driving back plate.
In the present disclosure, two structures are arranged in the same layer, meaning that they are formed of one material layer, and are not limited to being equidistant from the substrate 1.
Specifically, referring to fig. 1, noise reduction compensation electrodes 22 are alternately arranged at intervals from the display data signal lines 21.
In some embodiments, referring to fig. 2 and 3, the noise reduction compensation electrode 22 is disposed on a side of the common electrode 32 remote from the drive back plate.
In some embodiments, referring to fig. 2, the display panel further includes a plurality of encapsulation layers 41, 42, 43 stacked and disposed, the plurality of encapsulation layers 41, 42, 43 covering the light emitting element, and the noise reduction compensation electrode 22 is disposed between two adjacent encapsulation layers, for example, between the encapsulation layers 41, 42, and between the encapsulation layers 42, 43, of the plurality of encapsulation layers 41, 42, 43.
Specifically, in the embodiment shown in fig. 2, the encapsulation layer 41 is an inorganic encapsulation layer, and the material thereof includes silicon oxynitride or silicon nitride. The noise reduction compensation electrode 22 is disposed on the encapsulation layer 41. The cover layer 44 covers the noise reduction compensation electrode 22. The material of the cover layer 44 is, for example, silicon nitride or silicon oxide. The encapsulation layer 42 overlies the cover layer 44. The encapsulation layer 42 is an organic encapsulation layer, and its material includes an acrylic transparent organic material. The encapsulation layer 43 overlies the encapsulation layer 42. The encapsulation layer 42 is an inorganic encapsulation layer, the material of which includes silicon oxynitride or silicon nitride.
In the embodiment shown in fig. 2, the display panel further has a touch electrode integrated therein. Specifically, the touch buffer layer 61 is disposed on the encapsulation layer 43. The touch electrodes 71, 72 are double-layer wiring, and the two layers of touch electrodes 71, 72 are separated by the touch insulating layer 62. The planarization layer 46 covers the touch electrode 72. The material of the touch insulating layer 62 is, for example, a silicon nitride material or an exposable and developable transparent resin material. The material of the touch buffer layer 45 is, for example, a silicon nitride material or an exposable and developable transparent resin material. The material of the planarization layer 46 is, for example, a silicon nitride material or an exposable and developable transparent resin material. The material of the touch electrodes 71, 72 is, for example, molybdenum (Mo), titanium (Ti), copper (Cu), or the like.
In some embodiments, referring to fig. 3, the display panel further includes at least one encapsulation layer 41, 42, 43 covering the light emitting elements, and the noise reduction compensation electrode 22 is disposed on a side of the at least one encapsulation layer 41, 42, 43 remote from the driving back plate.
Specifically, in the embodiment shown in fig. 3, a buffer layer 45 is provided on the encapsulation layer 43. The material of the buffer layer 45 is, for example: silicon nitride or an exposable developable transparent resin. The noise reduction compensation electrode 22 is disposed on the buffer layer 45, and the noise reduction compensation electrode 22 is covered by the planarization layer 46.
In some embodiments, the at least one noise reduction compensation electrode 22 is in the form of a grid or sheet, and the at least one noise reduction compensation electrode 22 is integrally connected.
In some embodiments, the material of the noise reduction compensation electrode 22 is, for example: molybdenum (Mo), titanium (Ti), copper (Cu), and the like. In other embodiments, the noise reduction compensation electrode 22 is a titanium/aluminum/titanium multilayer metal structure. The noise reduction compensation electrode 22 may be patterned by photolithography, etching, or the like. Of course, the noise reduction compensation electrode 22 may be a transparent whole layer electrode. In these embodiments, the noise reduction compensation electrode 22 layer material is, for example, indium Tin Oxide (ITO) or the like.
Based on the same inventive concept, embodiments of the present disclosure further provide a display touch device, including: the display panel includes: the touch electrode is integrated in the display panel or the touch panel is hung outside the display panel.
The display touch device is, for example, a display touch panel, a display touch module, a mobile phone, a tablet computer, a navigator, or any product or component for display and touch.
The present disclosure does not limit the display type and the touch type of the display touch device. The display type is, for example, a liquid crystal display, a light emitting diode display, an electrowetting display, or the like. The touch type is, for example, mutual capacitance, self-capacitance, etc.
Based on the same inventive concept, embodiments of the present disclosure also provide a display driving method for driving the aforementioned display panel, referring to fig. 4, the method including:
Step 101, respectively providing display data voltages to a plurality of display data signal lines 21;
Step 102, providing a compensation voltage signal to at least one noise reduction compensation electrode 22;
Wherein, when the average value of the display data voltages supplied to the plurality of display data signal lines 21 is stable, the voltage value of the compensation voltage signal is stable, and when the average value of the display data voltages supplied to the plurality of display data signal lines 21 jumps, the voltage value of the compensation voltage signal jumps in the opposite direction to suppress the fluctuation of the voltage on the common electrode 32 caused by the display data signal lines 21.
In the case of a transition in the average value of the display data voltages supplied from the plurality of display data signal lines 21, the trend of the average voltage on the display data signal lines 21 is opposite to the trend of the voltage on the noise reduction compensation electrode 22, thereby helping to maintain the voltage on the common electrode 32 stable.
Referring to fig. 5, it is assumed that one display panel includes an M-row and N-column pixel structure. Each pixel structure constitutes a single color sub-pixel. The display data signal lines 21 sequentially supply display data voltages required for the same row of pixel structures. The display data signal lines 21 are numbered D1, D2, and D3 … … Dn in this order.
The average value U data (m) of the voltages of the display data signals written on the pixel structure of the m-th row is:
This value remains constant for most of the time of a row period, and jumps will occur in most cases at the interface of two row periods.
At the same time, the value of the compensation voltage signal is synchronously changed to Comp (m)
Wherein D m,n is the display data voltage to be written into the nth pixel structure of the mth row, k is a positive scaling factor, and C is a constant.
The various embodiments in this disclosure are described in a progressive manner, and identical and similar parts of the various embodiments are all referred to each other, and each embodiment is mainly described as different from other embodiments.
The scope of the present disclosure is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present disclosure by those skilled in the art without departing from the scope and spirit of the disclosure. Such modifications and variations are intended to be included herein within the scope of the following claims and their equivalents.
Claims (10)
1. A display panel, comprising: a plurality of pixel structures, a plurality of display data signal lines (21) and at least one noise reduction compensation electrode (22), wherein the display data signal lines (21) are used for writing display data voltages to the pixel structures, the plurality of pixel structures share a common electrode (32), the noise reduction compensation electrode (22) is coupled with the common electrode (32) to form a capacitor, and the noise reduction compensation electrode (22) is used for inhibiting voltage fluctuation on the common electrode (32) caused by the display data signal lines (21);
Wherein the noise reduction compensation electrode is configured to: when the average value of the display data voltages on the plurality of display data signal lines (21) is stable and unchanged, the voltage value on the noise reduction compensation electrode (22) is stable and unchanged, when the average value of the display data voltages on the plurality of display data signal lines (21) jumps, the voltage value on the noise reduction compensation electrode (22) jumps to the opposite direction,
The pixel structures are arranged in an array, and the steady state voltage value on the at least one noise reduction compensation electrode (22) satisfies the following formula:
Wherein Comp (m) is a voltage value of a steady state on the at least one noise reduction compensation electrode (22) in a row period of writing display data voltages to the mth row pixel structure, D m,n is a display data voltage required to be written to the mth row pixel structure, k is a positive scaling factor, C is a constant, and N is a column number of the pixel structure.
2. The display panel according to claim 1, further comprising a drive back plane, the pixel structure being disposed on the drive back plane, the display data signal line (21) being located in the drive back plane.
3. The display panel according to claim 2, wherein the noise reduction compensation electrode (22) is provided in the driving back plate.
4. A display panel according to claim 3, characterized in that the noise reduction compensation electrode (22) is arranged in the same layer as the display data signal line (21).
5. The display panel according to claim 2, wherein the noise reduction compensation electrode (22) is disposed on a side of the common electrode (32) remote from the driving back plate.
6. The display panel according to claim 5, further comprising a plurality of encapsulation layers (41, 42, 43) stacked and disposed, the plurality of encapsulation layers (41, 42, 43) covering the light emitting element, the noise reduction compensation electrode (22) being disposed between two adjacent encapsulation layers among the plurality of encapsulation layers (41, 42, 43).
7. The display panel according to claim 5, further comprising at least one encapsulation layer (41, 42, 43) covering the light emitting elements, the noise reduction compensation electrode (22) being arranged on a side of the at least one encapsulation layer remote from the driving back plate.
8. The display panel according to claim 5, wherein the at least one noise reduction compensation electrode (22) is in a grid shape or a sheet shape, and the at least one noise reduction compensation electrode (22) is integrally connected.
9. A display touch device, comprising: the display panel according to any one of claims 1 to 8, and comprising: the touch electrode is integrated in the display panel or the touch panel is hung outside the display panel.
10. A display driving method for driving the display panel according to any one of claims 1 to 8, the method comprising:
Providing display data voltages to the plurality of display data signal lines (21), respectively;
providing a compensation voltage signal to the at least one noise reduction compensation electrode (22);
Wherein when the average value of the display data voltages supplied to the plurality of display data signal lines (21) is stable, the voltage value of the compensation voltage signal is stable, and when the average value of the display data voltages supplied to the plurality of display data signal lines (21) jumps, the voltage value of the compensation voltage signal jumps in the opposite direction to suppress the fluctuation of the voltage on the common electrode (32) caused by the display data signal lines (21).
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| CN103065594A (en) * | 2012-12-14 | 2013-04-24 | 深圳市华星光电技术有限公司 | Data driving circuit, liquid crystal display device and driving method |
| CN103257498A (en) * | 2013-05-07 | 2013-08-21 | 京东方科技集团股份有限公司 | Pixel structure, driving method thereof and display device thereof |
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| US20080150928A1 (en) * | 2004-02-19 | 2008-06-26 | Koninklijke Philips Electronic, N.V. | Display Unit |
| CN100529923C (en) * | 2005-12-23 | 2009-08-19 | 北京京东方光电科技有限公司 | Leaping voltage measuring for thin film transistor liquid crystal display screen and automatic regulator for public electrode voltage |
| CN103514854B (en) * | 2013-10-28 | 2015-06-03 | 京东方科技集团股份有限公司 | Public electrode voltage compensation control circuit and method, array substrate and display device |
| KR102140815B1 (en) * | 2013-12-09 | 2020-08-04 | 삼성디스플레이 주식회사 | Liquid crystal display |
| CN104898343B (en) * | 2015-06-30 | 2017-12-22 | 重庆京东方光电科技有限公司 | Array base palte, display panel and display device |
| CN106647055B (en) * | 2016-11-30 | 2019-10-01 | 上海中航光电子有限公司 | Display panel and display device |
| CN109976013B (en) * | 2018-11-28 | 2021-08-17 | 南京京东方显示技术有限公司 | Display panel |
| CN109659327B (en) * | 2019-02-27 | 2021-02-05 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103065594A (en) * | 2012-12-14 | 2013-04-24 | 深圳市华星光电技术有限公司 | Data driving circuit, liquid crystal display device and driving method |
| CN103257498A (en) * | 2013-05-07 | 2013-08-21 | 京东方科技集团股份有限公司 | Pixel structure, driving method thereof and display device thereof |
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