CN112037725A - Display device and display method - Google Patents
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- CN112037725A CN112037725A CN202010883109.XA CN202010883109A CN112037725A CN 112037725 A CN112037725 A CN 112037725A CN 202010883109 A CN202010883109 A CN 202010883109A CN 112037725 A CN112037725 A CN 112037725A
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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
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Abstract
The invention discloses a display device and a display method.A time sequence control module is arranged in a system control chip, and a parameter setting module is arranged in a signal conversion chip, so that the time sequence control module does not need to be replaced when a display panel is replaced, namely, the system control chip is kept unchanged, and only the display panel and the signal conversion chip are replaced, thereby reducing the replacement cost and improving the lead-in efficiency of a new display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a display method.
Background
A conventional display device of a liquid crystal television may generally include: a System Control Chip (i.e., System on Chip, SOC)1, a timing Control Chip (i.e., Timer Control, TCON)2, a signal conversion Chip 3, and a display panel 4, as shown in fig. 1, in which a connection relationship between each Chip and the display panel is shown, wherein a parameter setting module m for controlling a display effect of the display panel is arranged in the timing Control Chip 2; if the display panel 4 shown in the figure needs to be replaced, the system control chip 1 may not need to be replaced, but the time sequence control chip 2 needs to be replaced because the parameter setting module m is arranged in the time sequence control chip 2, the parameters in the parameter setting module m are related to the display effect of the display panel 4, and the corresponding parameters of different display panels 4 are different.
That is, when the display panel is replaced, the sequential control chip needs to be replaced, which results in higher replacement cost; therefore, how to reduce the replacement cost is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a display device and a display method, which are used for reducing the replacement cost when a display panel is replaced in the display device.
In a first aspect, an embodiment of the present invention provides a display device, including:
a display panel;
the system control chip comprises a time sequence control module and a system control module, and the system control module is used for: converting a received externally input data stream into a data signal, and transmitting the data signal to the timing control module, wherein the timing control module is configured to: determining a driving signal according to the data signal and then outputting the driving signal;
the signal conversion chip is connected with the system control chip and the display panel;
the signal conversion chip comprises a parameter setting module and a signal conversion module, wherein the signal conversion module is used for: converting the driving signal into a display signal and transmitting the display signal to the display panel so that the display panel displays according to the display signal; the parameter setting module is used for: and controlling the display effect of the display panel.
Optionally, in this embodiment of the present invention, the timing control module is further configured to:
and when the display device is powered on, reading parameters from the parameter setting module, and carrying out initialization setting according to the read parameters.
Optionally, in the embodiment of the present invention, the parameter setting module is connected to the timing control module through an I2C transmission line or an SPI transmission line.
Optionally, in an embodiment of the present invention, the parameter setting module includes: the display parameter setting unit and the power supply control unit;
the signal conversion module comprises a plurality of signal conversion units, and the display parameter setting unit and the power supply control unit are respectively arranged on different signal conversion units.
Optionally, in an embodiment of the present invention, at least a part of the signal conversion units are electrically connected.
Optionally, in an embodiment of the present invention, the parameters for controlling by the display parameter setting unit include: a digital gamma look-up table, a color cast compensation look-up table, and an overdrive look-up table;
the parameters used by the power control unit for controlling include: a supply voltage and a level shift voltage.
Optionally, in an embodiment of the present invention, the method further includes: a flexible circuit board;
the flexible circuit board is used for connecting the signal conversion chip and the display panel.
Optionally, in the embodiment of the present invention, a source driver is disposed on the flexible circuit board.
In a second aspect, an embodiment of the present invention provides a display method of a display device, where the display device is the display device provided in the embodiment of the present invention; the display method comprises the following steps:
a system control module in the system control chip converts a received externally input data stream into a data signal;
the time sequence control module determines a driving signal according to the data signal and transmits the driving signal to a signal conversion module in the signal conversion chip; wherein, the signal conversion chip further comprises: the parameter setting module is used for controlling the display effect of the display panel;
the signal conversion module converts the driving signal into a display signal and outputs the display signal to a display panel so that the display panel displays according to the display signal.
Optionally, in this embodiment of the present invention, before the timing control module transmits the driving signal to the signal conversion module, the method further includes:
and when the display device is powered on, the time sequence control module reads parameters from the parameter setting module and carries out initialization setting according to the read parameters.
The invention has the following beneficial effects:
according to the display device and the display method provided by the embodiment of the invention, the time sequence control module is arranged in the system control chip, and the parameter setting module is arranged in the signal conversion chip, so that the time sequence control module does not need to be replaced when the display panel is replaced, namely, the system control chip is kept unchanged, and only the display panel and the signal conversion chip are replaced, so that the replacement cost can be reduced, and the introduction efficiency of a new display panel is improved.
Drawings
FIG. 1 is a schematic diagram of a display device according to the prior art;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a signal conversion chip according to an embodiment of the present invention;
FIG. 4 is a diagram of another signal conversion chip provided in an embodiment of the present invention;
fig. 5 is a flowchart of a display method according to an embodiment of the present invention.
The system comprises a display panel 10, a display panel 4, a system control chip 20, a system control chip 1, a time sequence control module 21, a system control module 22, a signal conversion chip 30, a signal conversion chip 3, a parameter setting module 31 and a parameter setting module m, a signal conversion module 32, a display parameter setting unit 31a, a power supply control unit 31b, a time sequence control chip 40 and a signal conversion unit Z1, Z2, Z3 and Z4.
Detailed Description
A detailed description will be given below of a specific embodiment of a display device and a display method according to an embodiment of the present invention with reference to the drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a display device, as shown in fig. 2, including:
a display panel 10;
the system control chip 20, the system control chip 20 includes a timing control module 21 and a system control module 22, the system control module 22 is configured to: converting the received data stream inputted from the outside into a data signal S1, and transmitting the data signal S1 to the timing control module 21, where the timing control module 21 is configured to: determining a driving signal S2 according to the data signal S1 and outputting the driving signal S2;
and a signal conversion chip 30 connecting the system control chip 20 and the display panel 10;
the signal conversion chip 30 includes a parameter setting module 31 and a signal conversion module 32, and the signal conversion module 32 is configured to: converting the driving signal S2 into a display signal S3 and transmitting the display signal S3 to the display panel 10, so that the display panel 10 performs display according to the display signal S3; the parameter setting module 31 is configured to: controls the display effect of the display panel 10.
Therefore, the time sequence control module is arranged in the system control chip, and the parameter setting module is arranged in the signal conversion chip, so that the time sequence control module does not need to be replaced when the display panel is replaced, namely, the system control chip is kept unchanged, and only the display panel and the signal conversion chip are replaced, so that the replacement cost can be reduced, and the importing efficiency of a new display panel is improved.
Optionally, in this embodiment of the present invention, the timing control module is further configured to:
and when the display device is powered on, reading the parameters from the parameter setting module, and carrying out initialization setting according to the read parameters.
Therefore, even if the parameter setting module is arranged in the signal conversion chip, when the time sequence control module is initialized, the parameters can still be read from the parameter setting module so as to realize initialization setting, and the subsequent display control of the display panel is facilitated.
Specifically, in the embodiment of the present invention, as shown in fig. 2, the parameter setting module 31 and the timing control module 21 are connected through an I2C transmission line or an SPI transmission line.
That is to say, through I2C transmission line or SPI transmission line connection parameter setting module and time sequence control module for the time sequence control module can read the parameter in the parameter setting module through I2C transmission line or SPI transmission line, thereby is favorable to realizing the initialization setting.
In practical applications, the transmission line for connecting the parameter setting module and the timing control module is not limited to the above two transmission lines, and may be other transmission lines capable of implementing a parameter reading function, which is not limited herein.
It should be noted that, setting the parameter setting module in the signal conversion chip may be understood as: the setting of the display effect related parameters for controlling the display panel is set in the signal conversion chip, and even when the display panel needs to be replaced subsequently, the system control chip does not need to be replaced, and meanwhile, the initialization setting of the time sequence control module is not influenced, so that the display device can support different display panels.
And, through separating parameter setting module and system control chip, can ensure that different display panels dock the same system control chip, reach the purpose of quick output new project to realized reducing the replacement cost, improved the development speed of new project.
In addition, the timing control module may be connected to the signal conversion module through a P2P interface, so that the timing control module may transmit the driving signal to the signal conversion module through a P2P interface, so that the signal conversion module converts the driving signal into a display signal and then controls the display panel to display the display signal.
In addition, the system control module can be connected with the timing control module through the VBO interface, so that the system control module can transmit the data signal to the timing control module through the VBO interface.
Of course, the connection interface between the timing control module and the signal conversion module and the connection interface between the system control module and the timing control module are not limited to the above, and may be other interfaces, which are not limited herein.
Optionally, in the embodiment of the present invention, as shown in fig. 3 and 4, the parameter setting module 31 includes: a display parameter setting unit 31a and a power supply control unit 31 b;
the signal conversion module includes a plurality of signal conversion units (Z1 and Z2 as shown in fig. 3, or Z1, Z2, Z3, and Z4 as shown in fig. 4), and the display parameter setting unit 31a and the power control unit 31b are respectively disposed on different signal conversion units.
So, can make display parameter setting unit and power control unit set up respectively on different signal conversion unit, avoid because of the space crowding that causes when display parameter setting unit and power control unit set up on same signal conversion unit, and then avoid displaying parameter setting unit, the short circuit between power control unit and the signal conversion unit produces, can also avoid causing this signal conversion unit's size too big when display parameter setting unit and power control unit set up on same signal conversion unit simultaneously, and then avoid the size of each signal conversion unit to be different and be unfavorable for the configuration optimization, thereby, when improving display device's reliability, realize the make full use of in space, optimize the structure of signal conversion module.
Specifically, in the embodiment of the present invention, as shown in fig. 3 and 4, at least part of the signal conversion units are electrically connected.
For example, as shown in fig. 3, the signal converting unit Z1 and the signal converting unit Z2 are electrically connected; alternatively, as shown in fig. 4, the signal converting unit Z1 and the signal converting unit Z2 are electrically connected, and the signal converting unit Z3 and the signal converting unit Z4 are electrically connected.
The function of the signal conversion module can be understood as follows:
the driving signal provided by the timing control module is generally a digital signal, and the display signal is generally an analog signal when the display panel displays according to the display signal, so that the signal conversion module can convert the received digital signal into the analog signal required by the display panel, so as to control the display panel to realize the display function.
When the signal conversion module is provided with a plurality of signal conversion units, taking the example shown in fig. 3 as an example, two signal conversion units are shown, which are respectively labeled as Z1 and Z2, if the display panel 10 is divided into the first display area a1 and the second display area a2, the signal conversion unit Z1 may be used to control the first display area a1 to display, and the signal conversion unit Z2 may be used to control the second display area a2 to display; at this time:
1. the signal conversion unit Z1 and the signal conversion unit Z2 may be electrically connected, and at least one of the signal conversion unit Z1 and the signal conversion unit Z2 may be electrically connected to the timing control module;
that is, as shown in fig. 3, when one of the signal conversion unit Z1 and the signal conversion unit Z2 is electrically connected to the timing control module, assuming that the signal conversion unit Z1 is electrically connected to the timing control module, the signal conversion unit Z1 may receive a first driving signal for driving the first display region and a second driving signal for driving the second display region, which are output by the timing control module, and the signal conversion unit Z1 may convert the first driving signal into the first display signal to perform display control on the first display region and may also output the second driving signal to the signal conversion unit Z2, so that the signal conversion unit Z2 may convert the second driving signal into the second display signal to perform display control on the second display region.
Moreover, since the signal conversion unit can determine which region of the display panel the driving signal corresponds to when converting the driving signal into the display signal, and further can determine which pixel of the display panel the converted display signal corresponds to, the signal conversion unit Z1 can distinguish the first driving signal from the second driving signal when receiving the first driving signal and the second driving signal, so that the second driving signal can be transmitted to the signal conversion unit Z2.
Alternatively, when the signal conversion unit Z1 and the signal conversion unit Z2 are electrically connected to the timing control module, respectively, not shown in the figure, the timing control module may output the first driving signal to the signal conversion unit Z1 and the second driving signal to the signal conversion unit Z2, so that the signal conversion unit Z1 may convert the first driving signal into the first display signal to perform display control on the first display region, and the signal conversion unit Z2 may convert the second driving signal into the second display signal to perform display control on the second display region.
2. The signal converting unit Z1 and the signal converting unit Z2 may be electrically disconnected, not shown, that is, the signal converting unit Z1 and the signal converting unit Z2 are disposed in an insulated state, and at this time:
the signal conversion unit Z1 and the signal conversion unit Z2 need to be electrically connected to the timing control module, respectively, the timing control module can output the first driving signal to the signal conversion unit Z1 and the second driving signal to the signal conversion unit Z2, so that the signal conversion unit Z1 can convert the first driving signal into the first display signal to perform display control on the first display area, and the signal conversion unit Z2 can convert the second driving signal into the second display signal to perform display control on the second display area.
In addition, the setting of the number of the signal conversion units can be set according to the size of the display panel, the control precision and other factors, and the larger the size of the display panel is, the more the related configuration of the display panel is involved, and further the number of the signal conversion units is, so that the size of the display panel is positively correlated with the number of the signal conversion units.
Therefore, the display process of the display panel can be controlled in a regional mode, so that accurate control is achieved, and the display effect of the display panel is improved.
Specifically, in the embodiment of the present invention, the parameters used by the display parameter setting unit for controlling include: a digital gamma look-up table, a color cast compensation look-up table, and an overdrive look-up table;
the parameters used by the power control unit for control include: a supply voltage and a level shift voltage.
For the level-shifted voltage, it can be understood that: when communication is performed through two set voltages, the two set voltages cannot be directly connected for communication due to different specifications, and level conversion is required to be performed through a level conversion voltage so as to realize communication between the two set voltages; the two set voltages here may include: high level Voltage (VOH), low level Voltage (VOL), etc.
The digital gamma lookup table comprises gamma voltage for adjusting analog voltage output to the display panel, so as to provide accurate voltage for each pixel in the display panel and ensure normal display of the display panel.
The color shift compensation lookup table comprises a color shift compensation voltage, and for a large-size display panel, when the analog voltage is provided to each pixel in the display panel, a large voltage drop may exist due to the large size of the display panel, so in order to ensure that an accurate analog voltage can be provided to each pixel, the color shift compensation voltage is introduced here to eliminate the problem of color shift caused by the voltage drop.
The overdrive lookup table comprises overdrive voltage, the overdrive voltage can improve the turning speed of liquid crystal molecules in the liquid crystal display panel, the response speed of liquid crystal is further improved, the problems of ghost shadow and the like are avoided, and therefore the display effect of the liquid crystal display panel can be improved.
Of course, in practical cases, the parameters used by the display parameter setting unit for controlling include other parameters related to display, such as, but not limited to, a Demura compensation look-up table, in addition to the above listed parameters.
For the power supply control unit, it can be understood that: the power supply and the voltage controlling component (which may be referred to as a power component) are not limited herein, and similarly, the parameters used by the power component for controlling include other relevant parameters in addition to the parameters listed above.
Optionally, in an embodiment of the present invention, the method further includes: a flexible circuit board;
the flexible circuit board is used for connecting the signal conversion chip and the display panel.
Therefore, the signal conversion chip can be connected with the display panel, and meanwhile, the signal can be transmitted through the flexible circuit board, so that the display control of the display panel is facilitated.
Specifically, in the embodiment of the present invention, the source driver is disposed on the flexible wiring board.
Of course, the source driver may be disposed not only on the flexible circuit board, but also on the display panel, and may be disposed according to the structure of the display panel and the actual needs, and is not limited herein.
Based on the same inventive concept, an embodiment of the present invention provides a display method, as shown in fig. 5, in which the display apparatus is the display apparatus provided in the embodiment of the present invention; the display method comprises the following steps:
s501, a system control module in a system control chip converts a received externally input data stream into a data signal;
the system control chip may be referred to as an SOC chip, that is, various circuits for controlling the display device to display are integrated.
S502, the time sequence control module determines a driving signal according to the data signal and transmits the driving signal to a signal conversion module in the signal conversion chip; wherein, signal conversion chip still includes: the parameter setting module is used for controlling the display effect of the display panel;
s503, the signal conversion module converts the driving signal into a display signal and outputs the display signal to the display panel, so that the display panel displays according to the display signal.
Optionally, in this embodiment of the present invention, before the timing control module transmits the driving signal to the signal conversion module, the method further includes:
when the display device is powered on, the time sequence control module reads parameters from the parameter setting module and carries out initialization setting according to the read parameters.
The time sequence control module is arranged in the system control chip, and the parameter setting module is arranged in the signal conversion chip, so that the time sequence control module is not required to be replaced when the display panel is replaced, namely, the system control chip is kept unchanged, and only the display panel and the signal conversion chip are replaced, so that the replacement cost can be reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, comprising:
a display panel;
the system control chip comprises a time sequence control module and a system control module, and the system control module is used for: converting a received externally input data stream into a data signal, and transmitting the data signal to the timing control module, wherein the timing control module is configured to: determining a driving signal according to the data signal and then outputting the driving signal;
the signal conversion chip is connected with the system control chip and the display panel;
the signal conversion chip comprises a parameter setting module and a signal conversion module, wherein the signal conversion module is used for: converting the driving signal into a display signal and transmitting the display signal to the display panel so that the display panel displays according to the display signal; the parameter setting module is used for: and controlling the display effect of the display panel.
2. The display device of claim 1, wherein the timing control module is further to:
and when the display device is powered on, reading parameters from the parameter setting module, and carrying out initialization setting according to the read parameters.
3. The display device according to claim 2, wherein the parameter setting module and the timing control module are connected through an I2C transmission line or an SPI transmission line.
4. The display device of claim 1, wherein the parameter setting module comprises: the display parameter setting unit and the power supply control unit;
the signal conversion module comprises a plurality of signal conversion units, and the display parameter setting unit and the power supply control unit are respectively arranged on different signal conversion units.
5. The display device according to claim 4, wherein at least part of the signal conversion units are electrically connected.
6. The display device according to claim 4, wherein the parameters for control by the display parameter setting unit include: a digital gamma look-up table, a color cast compensation look-up table, and an overdrive look-up table;
the parameters used by the power control unit for controlling include: a supply voltage and a level shift voltage.
7. The display device of claim 1, further comprising: a flexible circuit board;
the flexible circuit board is used for connecting the signal conversion chip and the display panel.
8. The display device according to claim 7, wherein a source driver is provided on the flexible wiring board.
9. A display method of a display device, wherein the display device is according to any one of claims 1 to 8; the display method comprises the following steps:
a system control module in the system control chip converts a received externally input data stream into a data signal;
the time sequence control module determines a driving signal according to the data signal and transmits the driving signal to a signal conversion module in the signal conversion chip; wherein, the signal conversion chip further comprises: the parameter setting module is used for controlling the display effect of the display panel;
the signal conversion module converts the driving signal into a display signal and outputs the display signal to a display panel so that the display panel displays according to the display signal.
10. The display method of claim 9, before the timing control module transmits the driving signal to the signal conversion module, further comprising:
and when the display device is powered on, the time sequence control module reads parameters from the parameter setting module and carries out initialization setting according to the read parameters.
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| CN112037725B (en) | 2023-01-10 |
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