CN110189723B - Adjusting method, adjusting device, driving method and transparent display device - Google Patents
Adjusting method, adjusting device, driving method and transparent display device Download PDFInfo
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- CN110189723B CN110189723B CN201910568413.2A CN201910568413A CN110189723B CN 110189723 B CN110189723 B CN 110189723B CN 201910568413 A CN201910568413 A CN 201910568413A CN 110189723 B CN110189723 B CN 110189723B
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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
- G09G3/3406—Control of illumination source
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- General Physics & Mathematics (AREA)
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention provides an adjusting method, an adjusting device, a driving method and a transparent display device, and belongs to the technical field of display. The invention relates to a method for regulating control voltage, which comprises the following steps: determining a pixel voltage range of the pixel unit according to a transparency range to be displayed of the transparent display panel; determining a starting voltage range and a turn-off voltage range of a driving transistor of a pixel unit according to the pixel voltage range; and determining a starting control voltage according to the starting voltage range, and determining a stopping control voltage according to the stopping voltage range so that the gate driver can control the on or off of each driving transistor according to the starting control voltage and the stopping control voltage.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a control voltage adjusting method, a control voltage adjusting device and a transparent display device.
Background
With the development of display technologies, various display technologies are emerging, wherein transparent display technologies are receiving more and more attention due to the light permeability of display panels. Because transparent display device has certain light penetrability, not only can show the picture on display screen, can also see through the background that display screen watched display screen rear, have extensive application scene.
In the conventional lcd transparent display device in the market, the backlight module behind the lcd panel is removed, and the backlight module is disposed around or above the lcd panel. The liquid crystal deflection state in the liquid crystal display panel is controlled by an electric field, so that the liquid crystal display panel is in a transmission state (dark state) or a scattering state (bright state).
The inventor finds that: the conventional transparent display device has large driving power consumption.
Disclosure of Invention
The present invention is directed to at least one of the technical problems of the prior art, and provides a method for adjusting a control voltage, which can effectively reduce the display power consumption of a transparent display panel.
The technical scheme adopted for solving the technical problem of the invention is an adjusting method, which comprises the following steps:
determining a pixel voltage range of the pixel unit according to a transparency range to be displayed of the transparent display panel;
determining a starting voltage range and a turn-off voltage range of a driving transistor of a pixel unit according to the pixel voltage range;
and determining a starting control voltage according to the starting voltage range, and determining a stopping control voltage according to the stopping voltage range so that the gate driver can control the on or off of each driving transistor according to the starting control voltage and the stopping control voltage.
Preferably, the step of determining the turn-on control voltage according to the range of the turn-on voltage includes: determining a starting control voltage according to the maximum value of the starting voltage, wherein the starting control voltage is greater than or equal to the maximum value of the starting voltage;
the step of determining a turn-off control voltage according to the turn-off voltage range includes: and determining a turn-off voltage according to the minimum value of the turn-off voltage, wherein the turn-off voltage is less than or equal to the minimum value of the turn-off voltage.
Preferably, the method for adjusting the control voltage further includes:
determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
The technical scheme adopted for solving the technical problem of the invention is a driving method for driving a transparent display panel, and the driving method comprises the following steps:
any one of the above control voltage adjusting methods;
and controlling the on or off of each driving transistor according to the turn-on control voltage and the turn-off control voltage.
Preferably, the method for driving the transparent display panel further includes:
and adjusting the brightness of the backlight source according to the transparency of the transparent display panel strip for displaying.
The technical scheme adopted for solving the technical problem of the invention is an adjusting device for adjusting the control voltage of a transparent display panel, which comprises:
the pixel voltage determining module is used for determining the pixel voltage range of the pixel unit according to the transparency range to be displayed of the transparent display panel;
the first determining module is used for determining the starting voltage range and the turn-off voltage range of the driving transistor of the pixel unit according to the pixel voltage range;
and the second determining module is used for determining a starting control voltage according to the starting voltage range and determining a stopping control voltage according to the stopping voltage range so as to control the connection or disconnection of each driving transistor by the grid driver according to the starting control voltage and the stopping control voltage.
Preferably, the control voltage adjusting device further includes: the gray scale voltage determining unit is used for determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
The technical scheme adopted for solving the technical problem of the invention is a transparent display device, which comprises:
any one of the above-described control voltage adjusting devices;
and the gate driver is used for controlling the on or off of each driving transistor according to the turn-on control voltage and the turn-off control voltage.
Preferably, the transparent display device further includes: a brightness adjusting unit for adjusting the brightness of the backlight source according to the transparency of the transparent display panel strip
Preferably, the transparent display device further includes: a transparent display panel.
Drawings
FIG. 1 is a flow chart of a conditioning method of an embodiment of the present invention;
FIG. 2 is a block diagram of an adjustment device of an embodiment of the present invention;
fig. 3 is a block diagram of a transparent display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a control voltage adjusting method, which is particularly suitable for adjusting the control voltage of the driving transistor in the pixel unit of the transparent display panel. Wherein the control voltage may include: the turn-on control voltage and the turn-off control voltage. The starting control voltage is used for controlling the conduction of the driving transistor; the turn-off control voltage is used for controlling the drive transistor to turn off.
The adjusting method provided by the embodiment may include the following steps:
and S1, determining the pixel voltage range of the pixel unit according to the transparency range to be displayed of the transparent display panel.
And S2, determining the turn-on voltage range and the turn-off voltage range of the driving transistor of the pixel unit according to the pixel voltage range.
And S3, determining a starting control voltage according to the starting voltage range, and determining a stopping control voltage according to the stopping voltage range, so that the grid driver can control the on or off of each driving transistor according to the starting control voltage and the stopping control voltage.
The transparent display panel includes a plurality of pixel regions, each of which has a pixel unit disposed therein. When the transparent display panel displays, the driving transistor in the pixel unit is controlled to be turned on by a control voltage (specifically, a turn-on control voltage), so that a pixel voltage can be applied to the pixel electrode of the pixel unit through the data line to control the liquid crystal corresponding to the pixel unit to deflect, thereby controlling the display of the pixel area.
The transparency of the transparent display panel is related to the pixel voltage applied to each pixel cell. When the transparency is high, the pixel voltage applied to the corresponding pixel unit should be relatively small, and when the transparency is low, the pixel voltage applied to the corresponding pixel unit should be relatively large. The on-voltage and off-voltage required to drive the transistor are different for different pixel voltages. In the method for adjusting the control voltage in this embodiment, the control voltage is dynamically adjusted according to the transparency to be displayed by the transparent display panel, and the control voltage is relatively increased or decreased.
The adjustment method of the present embodiment will be described more clearly below. The method for adjusting the control voltage of the embodiment may specifically include the following steps:
and S11, determining the pixel voltage range of the pixel unit according to the transparency range to be displayed of the transparent display panel.
It is understood that the transparency of the transparent display panel is adjustable. When the transparent display panel displays, the transparency of the transparent display panel can be adjusted according to the requirements of users. Specifically, the transparency of the transparent display panel can be controlled by controlling the transparency corresponding to the maximum gray scale and the minimum gray scale displayed on the transparent display panel (the overall display effect).
In this step, the transparency range to be displayed of the transparent display panel is determined according to the maximum transparency and the minimum transparency to be displayed of the transparent display panel, and the corresponding pixel voltage range is determined according to the transparency range.
Specifically, in this step, the corresponding relationship between the transparency and the pixel voltage can be measured by an existing testing method, for example, a transmittance testing method in the existing "optical testing method for liquid crystal transparent display".
And S12, determining the turn-on voltage range and the turn-off voltage range of the driving transistor of the pixel unit according to the pixel voltage range.
It can be understood that, during the display process of the transparent display panel, the pixel voltage in each pixel unit is output by the drain of the driving transistor, and the difference between the gate voltage and the drain voltage of the driving transistor determines the operating state of the driving transistor. That is, the on-voltage and the off-voltage of the driving transistor are related to the pixel voltage of the pixel unit, so that the on-voltage range and the off-voltage range of the driving transistor of the pixel unit can be determined according to the pixel voltage range.
And S13, determining a starting control voltage according to the starting voltage range, and determining a stopping control voltage according to the stopping voltage range, so that the grid driver can control the on or off of each driving transistor according to the starting control voltage and the stopping control voltage.
Since there are many pixel units in the transparent display panel, and the gray scale of each pixel in each frame of the display image changes, in this embodiment, it is preferable to adjust the control voltage to a range that can satisfy the operation of all the driving transistors according to the transparency range to be displayed of the transparent display panel.
Preferably, the method specifically comprises the following steps: and S31, determining the starting control voltage according to the maximum value of the starting voltage, wherein the starting control voltage is larger than or equal to the maximum value of the starting voltage. S32, the step of determining the turn-off control voltage according to the turn-off voltage range comprises the following steps: and determining the turn-off voltage according to the minimum value of the turn-off voltage, wherein the turn-off voltage is less than or equal to the minimum value of the turn-off voltage.
It can be understood that when the turn-on control voltage is greater than the turn-on voltage required by the driving transistor, the driving transistor can be controlled to be turned on; when the turn-off control voltage is less than the turn-off voltage required by the driving transistor, the driving transistor can be controlled to be turned off. Therefore, it is preferable that the on control voltage is equal to or higher than the maximum value of the on voltage, and the off voltage is equal to or lower than the minimum value of the off voltage.
Preferably, the adjusting method of the present embodiment further includes: s4, determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
When the transparent display panel displays, under the condition of meeting the required transparency, the display of different gray scales needs to be met. Specifically, for example, when the display is performed at 255 grayscales, in the present embodiment, the pixel voltage corresponding to the highest transparency (i.e., the minimum pixel voltage) corresponds to the 0 grayscale voltage (i.e., the minimum grayscale voltage), the pixel voltage corresponding to the lowest transparency (i.e., the maximum pixel voltage) corresponds to the 255 grayscale voltage (i.e., the maximum grayscale voltage), and the 1-244 grayscale voltages can be determined after the Gamma adjustment. It can be understood that although the on voltage and the off voltage of the driving transistor are different corresponding to different gray scale voltages, the on voltage and the off voltage are still within the above-mentioned range of the on voltage and the off voltage, so that the display can be performed normally.
Example 2:
the embodiment provides a driving method of a transparent display panel, which comprises the following steps: embodiment 1 provides a method for adjusting any one of the control voltages, and a step of controlling on or off of each of the driving transistors according to the on control voltage and the off control voltage.
It is understood that the on control voltage and the off control voltage are adjusted according to the control voltage adjusting method provided in embodiment 1.
Since the driving method of the transparent display panel provided in this embodiment includes the adjusting method of the control voltage provided in embodiment 1, when the transparent display panel is driven, the control voltage can be automatically adjusted according to the transparency of the transparent display panel to be displayed, so as to reduce the display power consumption of the transparent display panel.
Specifically, the driving method provided by this embodiment may include the following steps:
and S21, determining the driving time sequence required by the transparent display panel to display.
In this step, the driving timing required for the display of the transparent display panel can be obtained from the timing control module (TCON module).
And S22, adjusting the control voltage required by the transparent display panel during display.
The control voltage comprises a turn-on control voltage and a turn-off control voltage and is used for controlling the turn-on or turn-off of the driving transistor. In this step, the turn-on control voltage and the turn-off control voltage are adjusted according to the control voltage adjusting method provided in embodiment 1, and specific reference is made to embodiment 1, and details are not described here.
And S23, controlling the transparent display panel to display according to the driving time sequence and the adjusted control voltage.
In this step, the adjusted control voltage is output to the driving transistor of each pixel according to the driving timing sequence, and the operation of the driving transistor is controlled, so that the corresponding pixel voltage is input to the pixel electrode in each pixel when the driving transistor is turned on, thereby controlling the deflection of the liquid crystal and realizing the display under the required transparency.
In this embodiment, the method further includes: and S24, adjusting the brightness of the backlight source according to the transparency of the transparent display panel strip for display.
In this embodiment, when the transparent display panel performs display, the luminance of the backlight may be adjusted according to the transparency of the transparent display panel band for display, so as to meet the viewing requirement. Under the condition that the transparency of the transparent display panel belt for displaying is certain, the larger the brightness of the backlight source is, the lower the integral transparency of the transparent display panel in the visual field of a user is; the smaller the light emission luminance of the backlight, the higher the overall transparency of the transparent display panel in the user's field of view. Of course, it is understood that the change in the brightness of the backlight is not actually able to actually change the transparency of the transparent display panel, but is merely a visual effect for the user. The step S24 may be performed before the step S23, or after the step S23, which is not limited in this embodiment.
Example 3:
as shown in fig. 2, the present embodiment provides a voltage control adjusting apparatus, including: the device comprises a pixel voltage determining module, a first determining module and a second determining module.
And the pixel voltage determining module is used for determining the pixel voltage range of the pixel unit according to the transparency range to be displayed of the transparent display panel.
The first determining module is used for determining the turn-on voltage range and the turn-off voltage range of the driving transistor of the pixel unit according to the pixel voltage range.
And the second determining module is used for determining the starting control voltage according to the starting voltage range and determining the switching-off control voltage according to the switching-off voltage range so as to control the switching-on or switching-off of each driving transistor by the gate driver according to the starting control voltage and the switching-off control voltage.
Preferably, the voltage control adjusting device in this embodiment further includes: the gray scale voltage determining unit is used for determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
Each module of the adjusting apparatus provided in this embodiment may be integrated in a chip, and implemented by FPGA (Field-Programmable Gate Array) control.
Example 4:
as shown in fig. 3, the present embodiment provides a transparent display device, including: embodiment 3 provides a control voltage adjustment device and a gate driver. The gate driver is used for controlling the on or off of each driving transistor according to the turn-on control voltage and the turn-off control voltage.
Preferably, the transparent display device provided in this embodiment further includes: and the time sequence control module is used for providing a driving time sequence required by the display of the transparent display panel.
Further preferably, the transparent display device provided in this embodiment further includes: a transparent display panel.
In this embodiment, the transparent display panel is preferably a transparent liquid crystal display panel, and further, the transparent display device further includes a backlight source, which may be disposed at a periphery of the transparent display panel, and provides a light source for the transparent display panel.
Preferably, the transparent display device provided in this embodiment further includes: and the brightness adjusting unit is used for adjusting the brightness of the backlight source according to the transparency of the transparent display panel strip for displaying.
The Gate driver provided in this embodiment is integrated in a chip, and the timing control module, the brightness adjustment unit, and the like may also be integrated in the chip and implemented by FPGA (Field-Programmable Gate Array) control.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. An adjusting method for adjusting a control voltage of a transparent display panel, the adjusting method comprising:
determining a pixel voltage range of the pixel unit according to a transparency range to be displayed of the transparent display panel;
determining a starting voltage range and a turn-off voltage range of a driving transistor of a pixel unit according to the pixel voltage range;
and determining a starting control voltage according to the starting voltage range, and determining a stopping control voltage according to the stopping voltage range so that the gate driver can control the on or off of each driving transistor according to the starting control voltage and the stopping control voltage.
2. The method of claim 1, wherein the step of determining a turn-on control voltage based on the range of turn-on voltages comprises: determining a starting control voltage according to the maximum value of the starting voltage, wherein the starting control voltage is greater than or equal to the maximum value of the starting voltage;
the step of determining a turn-off control voltage according to the turn-off voltage range includes: and determining a turn-off voltage according to the minimum value of the turn-off voltage, wherein the turn-off voltage is less than or equal to the minimum value of the turn-off voltage.
3. The adjustment method according to claim 1, further comprising:
determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
4. A driving method for driving a transparent display panel, the driving method comprising:
the method of conditioning of any one of claims 1 to 3;
and controlling the on or off of each driving transistor according to the turn-on control voltage and the turn-off control voltage.
5. The driving method according to claim 4, further comprising:
and adjusting the brightness of the backlight source according to the transparency of the transparent display panel strip for displaying.
6. An adjustment device for controlling voltage of a transparent display panel, the adjustment device comprising:
the pixel voltage determining module is used for determining the pixel voltage range of the pixel unit according to the transparency range to be displayed of the transparent display panel;
the first determining module is used for determining the starting voltage range and the turn-off voltage range of the driving transistor of the pixel unit according to the pixel voltage range;
and the second determining module is used for determining a starting control voltage according to the starting voltage range and determining a stopping control voltage according to the stopping voltage range so as to control the connection or disconnection of each driving transistor by the grid driver according to the starting control voltage and the stopping control voltage.
7. The adjustment device of claim 6, further comprising: the gray scale voltage determining unit is used for determining each gray scale voltage according to the range of the pixel voltage; wherein, the maximum gray scale voltage corresponds to the maximum pixel voltage; the minimum gray scale voltage corresponds to the minimum pixel voltage.
8. A transparent display device, comprising:
the adjustment device of claim 6 or 7;
and the gate driver is used for controlling the on or off of each driving transistor according to the turn-on control voltage and the turn-off control voltage.
9. The transparent display device according to claim 8, further comprising: and the brightness adjusting unit is used for adjusting the brightness of the backlight source according to the transparency displayed by the transparent display panel strip.
10. The transparent display device according to claim 8, further comprising: a transparent display panel.
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