CN111767017A - Display panel and display method thereof - Google Patents
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- CN111767017A CN111767017A CN202010476507.XA CN202010476507A CN111767017A CN 111767017 A CN111767017 A CN 111767017A CN 202010476507 A CN202010476507 A CN 202010476507A CN 111767017 A CN111767017 A CN 111767017A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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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]
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Abstract
The application provides a display panel and a display method of the display panel, wherein the method comprises the following steps: receiving a first control signal; reading the display data of the first refreshing frequency and the compressed data of each refreshing frequency according to the first control signal, and displaying according to the display data of the first refreshing frequency; and if an instruction for switching the refresh frequency is received, displaying the compressed data with the second refresh frequency corresponding to the instruction. According to the display method, the storage space of the internal memory is properly increased, the display data with the first refreshing frequency and the compressed data with the refreshing frequencies are read and stored before display, and when the frequencies are switched, the display can be performed according to the compressed data, so that the black screen is avoided, and the display effect is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display method of the display panel.
Background
At present, the Demura technique has been widely applied to the production of an OLED (organic light emitting diode) module, and when displaying, the refresh frequency of the screen is required to be switchable, but due to the limitation of the storage space of the internal memory of the driving chip, multiple sets of Demura data cannot be loaded simultaneously, and only Demura data at different frequencies can be loaded according to the switching of the frequencies, but the loading of Demura data after the frequencies are switched affects the display effect, and causes poor user experience.
Disclosure of Invention
The invention mainly provides a display panel and a display method of the display panel, which are used for avoiding the problem that the display effect is influenced when the display refreshing frequency is switched.
In order to solve the above technical problems, a first technical solution provided by the present invention is: receiving a first control signal; reading the display data of the first refreshing frequency and the compressed data of each refreshing frequency according to the first control signal, and displaying according to the display data of the first refreshing frequency; and if an instruction for switching the refresh frequency is received, displaying the compressed data with the second refresh frequency corresponding to the instruction.
Wherein, if receiving the command of switching the refresh frequency, the step of displaying the compressed data of the second refresh frequency corresponding to the command further comprises: reading the display data of the second refreshing frequency; and displaying according to the display data of the second refreshing frequency.
Wherein the first refresh frequency and the second refresh frequency at least comprise 60Hz, 90Hz and 120 Hz.
Wherein, the step of reading the display data of the first refresh frequency and the compressed data of each refresh frequency according to the first control signal and displaying according to the display data of the first refresh frequency comprises: and reading the display data with the first refreshing frequency and the compressed data with each refreshing frequency from an external memory, and displaying according to the display data with the first refreshing frequency after the display panel is started.
Wherein, if receiving the command of switching the refresh frequency, the step of displaying the compressed data of the second refresh frequency corresponding to the command further comprises: if the second refresh frequency of the displayed compressed data is 60HZ, reading the display data with the second refresh frequency of 60HZ, and displaying according to the display data with the second refresh frequency of 60 HZ; if the second refresh frequency of the displayed compressed data is 90HZ, reading the display data with the second refresh frequency of 90HZ, and displaying according to the display data with the second refresh frequency of 90 HZ; and if the second refresh frequency of the displayed compressed data is 120HZ, reading the display data with the second refresh frequency of 120HZ, and displaying according to the display data with the second refresh frequency of 120 HZ.
Wherein the data size of the compressed data is 1/4 of the display data.
In order to solve the above technical problems, a second technical solution provided by the present invention is: provided is a display panel including: the device comprises a driving chip, an internal memory and an external memory; the external memory is used for storing display data of each refreshing frequency and compressed data of each refreshing frequency; the internal memory is integrated in the driving chip and connected with the external memory, and is used for reading and storing the display data with the first refreshing frequency and the compressed data with each refreshing frequency from the external memory, and enabling the driving chip to drive the display data with the first refreshing frequency and the compressed data with each refreshing frequency to be displayed.
The display data of each refresh frequency and the compressed data of each refresh frequency stored in the external memory at least comprise 60HZ display data, 90HZ display data and 120HZ display data, and 60HZ compressed data, 90HZ compressed data and 120HZ compressed data.
Wherein the compressed data of each refresh frequency stored in the internal memory at least comprises compressed data of 60HZ, compressed data of 90HZ and compressed data of 120 HZ; and the display data of the first refresh frequency stored by the internal memory includes: display data of 60HZ, or display data of 90HZ, or display data of 120 HZ.
The data size of the compressed data is 1/4 of the display data.
The invention has the beneficial effects that: the method and the device are different from the prior art, when a first control signal is received to display, the display data of the first refreshing frequency and the compressed data of each refreshing frequency are read according to the first control signal and displayed according to the display data of the first refreshing frequency, and if an instruction for switching the refreshing frequency is received, the compressed data of a second refreshing frequency corresponding to the instruction is displayed. The storage space of the internal memory is properly increased, the display data with the first refreshing frequency and the compressed data with each refreshing frequency are read and stored before display, and when the frequency is switched, the display can be performed according to the compressed data, so that the black screen is avoided, and the display effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of data storage of an internal memory and an external memory in a display panel according to the present invention;
FIG. 3 is a flowchart illustrating a display method of a display panel according to a first embodiment of the present invention;
FIG. 4 is a flowchart illustrating a display method of a display panel according to a first embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
In the prior art, due to the limitation of the size of the storage space of the internal memory, when the display is performed, only one group of display data with the same refresh frequency can be loaded at the same time, when the frequency is switched, one group of display data corresponding to the new refresh frequency to be switched needs to be reloaded, when the display data with the new refresh frequency is loaded, a screen needs to be blacked and then lightened, and a black screen phenomenon is generated; if the display data with the new refreshing frequency is loaded, the operation of turning on the screen again after turning off the screen is not performed, obvious visible display effect changes can be caused, and the user experience feeling is poor. The invention provides a display panel, which can avoid the problem of black screen during frequency switching by properly increasing the storage space of an internal memory and an external memory, improve the display effect and meet the high pursuit of a user on experience. Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the invention, and fig. 2 is a schematic data storage diagram of an internal memory and an external memory in the display panel shown in fig. 1.
Specifically, as shown in fig. 1, the display panel 11 of the present invention includes a driving chip 12, an internal memory 13, and an external memory 14. Wherein the external memory 14 is independent from the driver chip 12, i.e. the external memory 14 is a memory for storing data other than the memory in the driver chip 12. In one embodiment, the external memory 14 may be a flash memory, which is a Non-Volatile (Non-Volatile) memory capable of permanently holding data even without a current supply.
The internal memory 13 is integrated in the driving chip 12 and connected to the external memory 14, and is used for reading and storing data in the external memory 14 from the external memory 14. The driving chip 12 is configured to drive the data stored in the internal memory 13 for displaying, and specifically, the internal memory 13 may be a Random Access Memory (RAM), which is an internal memory directly exchanging data with the processor and is also called a main memory (internal memory). It can be read and written at any time, and is fast, usually used as temporary data storage medium of operating system or other running program. The internal memory loses its stored data when power is off, and thus is mainly used to store programs for a short time.
In an embodiment, the internal memory 13 is connected to the external memory 14, and the specific internal memory 13 is connected to the external memory 14 by an SPI (Serial Peripheral Interface) communication protocol, where SPI is a high-speed, full-duplex, and synchronous communication bus, and only four wires are occupied on pins of a chip, so that the pins of the chip are saved, and meanwhile, space is saved in the layout of a PCB, which provides convenience.
Referring to fig. 2, the external memory 14 in the display panel provided by the present invention is used for storing the display data of each refresh frequency and the compressed data of each refresh frequency. Specifically, the display data of each refresh frequency and the compressed data of each refresh frequency stored in the external memory 14 include at least 60HZ display data, 90HZ display data, and 120HZ display data, and 60HZ compressed data, 90HZ compressed data, and 120HZ compressed data. The internal memory 13 of the display panel provided by the present invention is used for reading and storing the display data of the first refresh frequency and the compressed data of each refresh frequency from the external memory 14. Specifically, the compressed data of each refresh frequency stored in the internal memory 13 at least includes compressed data of 60HZ, compressed data of 90HZ, and compressed data of 120HZ, and the display data of the first refresh frequency stored in the internal memory 13 includes: display data of 60HZ, or display data of 90HZ, or display data of 120 HZ.
The display data can be Demura data, and the Demura data is display repair data, so that the problem of uneven brightness of the display panel can be solved.
In one embodiment, to enable the external memory 14 to implement the data storage shown in fig. 2, the storage space of the external memory 14 is equal to or larger than the occupied space of the display data of 60HZ, the display data of 90HZ, and the display data of 120HZ, and the compressed data of 60HZ, the compressed data of 90HZ, and the compressed data of 120 HZ. And in order to enable the internal memory 13 to realize the data storage shown in fig. 2, the storage space of the internal memory 13 is equal to or larger than the occupied space of the compressed data of 60HZ, the compressed data of 90HZ, the compressed data of 120HZ, and the display data of 60HZ, or the display data of 90HZ, or the display data of 120 HZ.
In one embodiment, to prevent the memory of the external memory 14 from being too large, and to ensure that the storage space of the internal memory 13 meets the requirement, the compressed data is obtained by compressing the display data by 4 times, i.e. the data storage space of the compressed data is 1/4 times of the display data. Of course, in other embodiments, the compressed data may be obtained by compressing the display data by 2 times or 3 times. Or in another possible embodiment, the compressed data may be obtained by compressing the display data by 5 times, 6 times, etc., and is not limited herein.
Specifically, in the conventional display panel, when the internal memory 13 receives a control command, the internal memory 13 reads the display data with the first refresh frequency from the external memory 14, and for example, when performing display, the internal memory 13 reads any one of the display data with the refresh frequency of 60HZ, the display data with the refresh frequency of 90HZ, and the display data with the refresh frequency of 120HZ from the external memory 14. Therefore, the storage space of the internal memory 13 in the display panel 11 in the prior art is equal to the occupied space of the display data with the refresh frequency of 60HZ, or the display data with the refresh frequency of 90HZ, or the display data with the refresh frequency of 120 HZ. In the display panel of the present invention, the internal memory 13 of the internal memory 13 is slightly larger than the internal memory 13 of the conventional display panel, and the internal memory 13 can read and store the display data with the refresh frequency of 60HZ from the external memory 14, or store the display data with the refresh frequency of 90HZ, or store the display data with the refresh frequency of 120HZ, and in addition, the internal memory 13 can store the compressed data with the refresh frequency of 60HZ, the compressed data with the refresh frequency of 90HZ, and the compressed data with the refresh frequency of 120HZ, as shown in fig. 2.
When receiving the control signal, the internal memory 13 of the display panel of the invention can read and store the display data of the first refresh frequency and the compressed data of each refresh frequency from the external memory 14, and display according to the display data of the first refresh frequency, and when receiving the command of switching the refresh frequency, display according to the compressed data of the second refresh frequency corresponding to the command. The storage space of the internal memory is properly increased, the display data with the first refreshing frequency and the compressed data with the refreshing frequencies are read and stored before display, and when the frequency is switched, the display data or the compressed data do not need to be read additionally, so that the display effect is prevented from being influenced.
The display panel provided by the invention can be any one of a double-sided display panel, a flexible display panel and a full-screen display panel. The flexible display panel may be applied to a curved electronic device; the double-sided display panel may be applied to a panel for enabling a person on both sides of the display panel to see the display contents; the full-screen display panel can be applied to a full-screen mobile phone or other devices, and is not limited herein.
The display panel can be applied to any products or components with display functions such as mobile phones, tablet computers, televisions, displays, notebook computers, digital photo frames, navigators and the like. Other essential components of the display panel are understood by those skilled in the art, and are not described herein nor should they be construed as limiting the present invention.
In the embodiments of the present invention, only a part of the related structures of the display panel are described, and other structures are the same as those of the display panel in the prior art, and are not described herein again.
Fig. 3 is a flowchart illustrating a display method of the display panel shown in fig. 1 according to a first embodiment. The method specifically comprises the following steps:
step S31: a first control signal is received.
Specifically, the first control signal is a signal for displaying on the display panel, such as a signal for starting the display panel and controlling the display panel to operate, that is, a control signal for powering on the display panel. The first control signal may be a control signal generated by artificial triggering, for example, a control signal generated by a user by triggering a designated key such as a switch key; the first control signal may also be a control signal generated by another device, for example, a control signal sent by an external device to the display panel through a wireless network, which is not limited in particular.
Step S32: and reading the display data of the first refresh frequency and the compressed data of each refresh frequency according to a first control signal, and displaying according to the display data of the first refresh frequency.
The first refresh rate includes at least 60HZ, 90HZ, and 120 HZ.
Specifically, at the instant when the first control signal, that is, the control signal for powering on the display panel is received, the internal memory 13 reads the display data of the first refresh frequency and the compressed data of each refresh frequency from the external memory 14. For example, the compressed data of each refresh frequency read by the internal memory 13 from the external memory 14 is compressed data having a refresh frequency of 60HZ, compressed data having a refresh frequency of 90HZ, and compressed data having a refresh frequency of 120HZ, and the display data of the first refresh frequency read by the internal memory 13 from the external memory 14 is display data having a refresh frequency of 60HZ, display data having a refresh frequency of 90HZ, or display data having a refresh frequency of 120 HZ. After the reading is completed, and the display panel is powered on and started, displaying any one of the read display data of 60HZ, the read display data of 90HZ or the read display data of 120 HZ. In one embodiment, when the display panel is powered on, the display data with the first refresh frequency of 60HZ may be preferably read from the external memory 14; of course, in other embodiments, when the display panel is powered on, the display data with the first refresh frequency of 90HZ may also be read from the external memory 14; alternatively, the display data with the first refresh rate of 120HZ may be read from the external memory 14 when the display panel is powered on.
In one embodiment, in order to prevent the memory of the external storage 14 from being too large and to ensure that the storage space of the internal storage 13 meets the requirement, the compressed data is obtained by compressing the display data by 4 times, that is, the data size of the compressed data is 1/4 times of the display data, but in other embodiments, the compressed data may also be obtained by compressing the display data by 2 times or 3 times. Or in another possible embodiment, the compressed data may be obtained by compressing the display data by 5 times, 6 times, etc., and is not limited herein.
Step S33: and if an instruction for switching the refresh frequency is received, displaying the compressed data with the second refresh frequency corresponding to the instruction.
Specifically, at this time, the internal memory 13 stores compressed data with a refresh frequency of 60HZ, compressed data with a refresh frequency of 90HZ, compressed data with a refresh frequency of 120HZ, and any one of display data with a refresh frequency of 60HZ, display data with a refresh frequency of 90HZ, and display data with a refresh frequency of 120 HZ.
In an embodiment, if the current display panel 11 displays according to the display data of 60HZ, when receiving the command of switching the refresh frequency, the driving chip 12 drives the compressed data with the refresh frequency of 90HZ stored in the internal memory 13 to display; alternatively, when receiving a command for switching the refresh frequency, the driver chip 12 drives the compressed data stored in the internal memory 13 and having the refresh frequency of 120HZ to display the compressed data.
In an embodiment, if the current display panel 11 displays according to 90HZ display data, when receiving a command for switching the refresh frequency, the driving chip 12 drives the compressed data with the refresh frequency of 60HZ stored in the internal memory 13 to display; alternatively, when receiving a command for switching the refresh frequency, the driver chip 12 drives the compressed data stored in the internal memory 13 and having the refresh frequency of 120HZ to display the compressed data.
In an embodiment, if the current display panel 11 displays according to the display data of 1200HZ, when receiving the command of switching the refresh frequency, the driving chip 12 drives the compressed data with the refresh frequency of 90HZ stored in the internal memory 13 to display; alternatively, when receiving a command for switching the refresh frequency, the driver chip 12 drives the compressed data stored in the internal memory 13 and having the refresh frequency of 60HZ to display the compressed data.
In the display method described in this embodiment, because the compressed data at each refresh frequency is stored in the internal memory, when the data switching at different refresh frequencies is performed, the compressed data corresponding to the switched display data is displayed, which can avoid the phenomenon of black screen during the frequency switching process.
In order to further enhance the display effect of the display panel, the present invention further provides a display method according to another embodiment, and referring to fig. 4, the method is a flowchart of a second embodiment of the display method according to the present invention, wherein steps S41 to S43 are the same as steps S31 to S33 described in fig. 3, except that the present embodiment further includes:
step S44: and reading the display data at the second refresh frequency.
Specifically, the second refresh frequency includes at least 60HZ, 90HZ, and 120 HZ. In an embodiment, if the display panel currently displays according to the compressed data of 60HZ, that is, the second refresh frequency corresponding to the command for switching the refresh frequency is 60HZ, the internal memory 13 reads the display data with the refresh frequency of 60HZ from the external memory 14. If the display panel is currently displaying according to the compressed data of 90HZ, the internal memory 13 reads the display data with the refresh frequency of 90HZ from the external memory 14. If the display panel is currently displaying according to the 120HZ compressed data, the internal memory 13 reads the display data with the refresh frequency of 120HZ from the external memory 14.
Step S45: and displaying according to the display data of the second refreshing frequency.
Specifically, when the display is currently performed based on the compressed data of 60HZ, the internal memory 13 reads the display data with the refresh frequency of 60HZ from the external memory 14, and performs the display based on the display data with the refresh frequency of 60 HZ. When the display is currently performed based on the compressed data of 90HZ, the internal memory 13 reads the display data with the refresh frequency of 90HZ from the external memory 14, and performs the display based on the display data with the refresh frequency of 60 HZ. When the display is currently performed based on the compressed data of 120HZ, the internal memory 13 reads the display data with the refresh frequency of 120HZ from the external memory 14, and performs the display based on the display data with the refresh frequency of 120 HZ.
That is, when the display panel of the present embodiment acquires the first control command, the internal memory 13 first reads, from the external memory 14, any one of the compressed data with the refresh frequency of 60HZ, the compressed data with the refresh frequency of 90HZ, the compressed data with the refresh frequency of 120HZ, and the display data with the refresh frequency of 60HZ, the display data with the refresh frequency of 90HZ, and the display data with the refresh frequency of 120 HZ. And displaying according to the read display data.
In one embodiment, upon receiving the first control signal, the internal memory 13 reads the display data of the first refresh frequency and the compressed data of each refresh frequency from the external memory 14, for example, the display data of the first refresh frequency read by the internal memory 13 from the external memory 14 is the display data of 60HZ, and the compressed data of each refresh frequency read is the compressed data of 60HZ, the compressed data of 90HZ, and the compressed data of 120 HZ; the driving chip 12 drives the display data of 60HZ read by the internal memory 13 to display at this time. When receiving the frequency switching instruction, determining a second refresh frequency corresponding to the instruction, and displaying according to the compressed data of the second refresh frequency corresponding to the instruction, for example, if the second refresh frequency corresponding to the instruction is 90HZ, the driver chip 12 drives the compressed data of 90HZ stored in the internal memory 12 to display; for example, if the second refresh frequency corresponding to the command is 120HZ, the driver chip 12 drives the compressed data of 120HZ stored in the internal memory 13 to display the compressed data. After the compressed data is displayed, the internal memory 13 reads the display data of the second refresh frequency, which is the same as the refresh frequency of the compressed data currently displayed, from the external memory 14. For example, if the currently displayed compressed data is 60HZ compressed data, the internal memory 13 reads the display data with the refresh frequency of 60HZ from the external memory, and performs display based on the 60HZ display data, so as to complete switching from the other display frequencies to the 60HZ display data. For example, if the currently displayed compressed data is 90HZ compressed data, the internal memory 13 reads the display data with the refresh frequency of 90HZ from the external memory, and performs display based on the 90HZ display data, so as to complete the switching of the display data from 60HZ to 60 HZ. For example, if the currently displayed compressed data is 120HZ compressed data, the internal memory 13 reads the display data with the refresh frequency of 120HZ from the external memory, and performs display based on the 120HZ display data, so as to complete the switching of the display data from 90HZ to 120 HZ.
Specifically, in the present embodiment, in the process of displaying according to the compressed data, the internal memory 13 reads the corresponding display data from the external memory 14, which avoids a black screen, and can display the uncompressed display data, thereby ensuring the superiority of the display effect.
The switching of display data with refresh frequencies of 60HZ, 90HZ, and 120HZ in the above-described embodiments is merely exemplary, and is switching between display data with a relatively large span of refresh frequencies. In the above embodiment, the compressed data of each refresh frequency is different from each other, and in an embodiment, if the span between the refresh frequencies to be switched is small, the compressed data of the plurality of refresh frequencies may be the same, for example, when 20HZ, 30HZ, 40HZ, and 50HZ are used, only the compressed data of 30HZ and the compressed data of 40HZ may be stored when the compressed data is stored, and when the switching is performed and when the switching instruction received when the display is currently performed based on the display data of 20HZ and the display data is to be switched to the display data of 40HZ, the display may be performed based on the compressed data of 30HZ first, then the display data of 40HZ is read, and the display may be performed based on the read display data of 40 HZ. If the display is currently performed according to the display data of 30HZ and the received switching instruction indicates that the display data is to be switched to the display data of 40HZ, the display may be performed according to the compressed data of 40HZ, then the display data of 50HZ is read, and the display may be performed according to the read display data of 50 HZ. Since the frequencies to be switched are relatively close, they can share the same compressed data.
The switching of display data with refresh frequencies of 60HZ, 90HZ, and 120HZ, which is switching between display data with a relatively large span of refresh frequencies, is merely exemplified in the above embodiments. In an embodiment, if the span between the refresh frequencies of the switching is small, for example, 20HZ, 30HZ, 40HZ, and 50HZ, only the compressed data of 30HZ and the compressed data of 40HZ may be stored when the compressed data is stored, and when the switching is performed, and when the switching instruction received when the display is currently performed based on the display data of 20HZ indicates that the display is to be switched to the display data of 40HZ, the display may be performed based on the compressed data of 30HZ, then the display data of 40HZ may be read, and the display may be performed based on the read display data of 40 HZ. If the display is currently performed according to the display data of 30HZ and the received switching instruction indicates that the display data is to be switched to the display data of 40HZ, the display may be performed according to the compressed data of 40HZ, then the display data of 50HZ is read, and the display may be performed according to the read display data of 50 HZ. Since the frequencies to be switched are relatively close, they can share the same compressed data.
When the external memory 14 stores display data, the display panel stores complete display data with a refresh frequency of 60HZ, and the display data with a refresh frequency of 90HZ and a refresh frequency of 120HZ are both differentiated by the display data with 60 HZ. When the display is performed, the driving chip 12 first drives the display data with 60HZ to perform the display, and when the switching instruction is received, the driving chip 12 drives the display data with the refresh frequency of 90HZ after the difference is made to perform the display, or drives the display data with the refresh frequency of 120HZ after the difference is made to perform the display. However, since part of the display data is sacrificed when storing the difference, the display effect of the display data of 90HZ and 120HZ is deteriorated when displaying. In the display method of the display panel provided by the application, when the display is performed, the complete display data is read from the external memory 14 in the process of displaying the compressed display data, so that in the process of frequency switching, not only can the black screen not appear, but also the superiority of the display effect can be ensured.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A display method of a display panel, comprising:
receiving a first control signal;
reading the display data of the first refreshing frequency and the compressed data of each refreshing frequency according to the first control signal, and displaying according to the display data of the first refreshing frequency;
and if an instruction for switching the refresh frequency is received, displaying the compressed data with the second refresh frequency corresponding to the instruction.
2. The method according to claim 1, wherein the step of displaying according to the compressed data of the second refresh frequency corresponding to the command after receiving the command for switching the refresh frequency further comprises:
reading the display data of the second refreshing frequency;
and displaying according to the display data of the second refreshing frequency.
3. The display method of the display panel according to claim 1 or 2, wherein the first refresh frequency and the second refresh frequency include at least 60HZ, 90HZ, and 120 HZ.
4. The display method of the display panel according to claim 1 or 2,
the step of reading the display data with the first refresh frequency and the compressed data with each refresh frequency according to the first control signal and displaying according to the display data with the first refresh frequency comprises the following steps:
and reading the display data with the first refreshing frequency and the compressed data with each refreshing frequency from an external memory, and displaying according to the display data with the first refreshing frequency after the display panel is started.
5. The method according to claim 3, wherein the step of displaying according to the compressed data of the second refresh frequency corresponding to the command after receiving the command for switching the refresh frequency further comprises:
if the second refresh frequency of the displayed compressed data is 60HZ, reading the display data with the second refresh frequency of 60HZ, and displaying according to the display data with the second refresh frequency of 60 HZ;
if the second refresh frequency of the displayed compressed data is 90HZ, reading the display data with the second refresh frequency of 90HZ, and displaying according to the display data with the second refresh frequency of 90 HZ;
and if the second refresh frequency of the displayed compressed data is 120HZ, reading the display data with the second refresh frequency of 120HZ, and displaying according to the display data with the second refresh frequency of 120 HZ.
6. The display panel of claim 1 or 2, wherein the data size of the compressed data is 1/4 of the display data.
7. A display panel, comprising: the device comprises a driving chip, an internal memory and an external memory;
the external memory is used for storing display data of each refreshing frequency and compressed data of each refreshing frequency;
the internal memory is integrated in the driving chip and connected with the external memory, and is used for reading and storing the display data with the first refreshing frequency and the compressed data with each refreshing frequency from the external memory, and enabling the driving chip to drive the display data with the first refreshing frequency and the compressed data with each refreshing frequency to be displayed.
8. The display panel according to claim 7, wherein the display data of each refresh frequency and the compressed data of each refresh frequency stored in the external memory include at least display data of 60HZ, display data of 90HZ, and display data of 120HZ, and compressed data of 60HZ, compressed data of 90HZ, and compressed data of 120 HZ.
9. The display panel according to claim 8, wherein the compressed data of each refresh frequency stored in the internal memory includes at least compressed data of 60HZ, compressed data of 90HZ, and compressed data of 120 HZ; and
the display data of the first refresh frequency stored by the internal memory includes: display data of 60HZ, or display data of 90HZ, or display data of 120 HZ.
10. The display panel of claims 7-9 wherein the compressed data has a data size of 1/4 of the display data.
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