CN114283721A - Display panel, driving method of display panel and display device - Google Patents
Display panel, driving method of display panel and display device Download PDFInfo
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- CN114283721A CN114283721A CN202111370769.9A CN202111370769A CN114283721A CN 114283721 A CN114283721 A CN 114283721A CN 202111370769 A CN202111370769 A CN 202111370769A CN 114283721 A CN114283721 A CN 114283721A
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Abstract
The application relates to the technical field of semiconductor devices, in particular to a display panel, a driving method of the display panel and a display device, wherein the display panel is divided into a main screen area and an auxiliary screen area, the display panel comprises a data driver and a gamma voltage module, and the data driver is used for providing main screen driving voltage for the main screen area and providing auxiliary screen driving voltage for the auxiliary screen area; the gamma voltage module comprises a first power module group and a second power module group, and the first power module group is used for providing a main screen gamma voltage for the data driver so that the data driver provides a main screen driving voltage for the main screen area based on the main screen gamma voltage; the second power module group is used for providing the auxiliary screen gamma voltage for the data driver, so that the data driver provides the auxiliary screen driving voltage for the auxiliary screen area based on the auxiliary screen gamma voltage. The display panel can enable the main screen area and the auxiliary screen area to be displayed in a consistent mode.
Description
Technical Field
The present disclosure relates to the field of semiconductor device technologies, and in particular, to a display panel, a driving method of the display panel, and a display device.
Background
Along with the development demand of full-face screen, with photosensitive element settings such as leading camera in the display panel below, display panel still can show, and photosensitive element such as leading camera still can normally work, this is just so that photosensitive element region and the regional design of main screen are different under the display panel screen, can cause under the screen photosensitive element region's maximum brightness unable adjustment to be unanimous with the main screen maximum brightness, makes under the screen photosensitive element region and main screen region have the difference, influences the display effect.
Disclosure of Invention
In view of the above, the present disclosure provides a display panel, a driving method of the display panel, and a display device, so as to improve the difference between the display of the photosensitive element area under the screen and the display of the main screen area of the display panel, and improve the display effect.
In order to solve the technical problem, the application adopts a technical scheme that: a display panel is divided into a main screen area and an auxiliary screen area and comprises a data driver and a gamma voltage module, wherein the data driver is used for providing main screen driving voltage for the main screen area and providing auxiliary screen driving voltage for the auxiliary screen area; the gamma voltage module comprises a first power module group and a second power module group, and the first power module group is used for providing a main screen gamma voltage for the data driver so that the data driver provides a main screen driving voltage for the main screen area based on the main screen gamma voltage; the second power module group is used for providing the auxiliary screen gamma voltage for the data driver, so that the data driver provides the auxiliary screen driving voltage for the auxiliary screen area based on the auxiliary screen gamma voltage.
The first power module group comprises a first sub power converter and a second sub power converter, the first sub power converter is used for providing a first main screen gamma voltage for the data driver, the second sub power converter is used for providing a second main screen gamma voltage for the data driver, and the first main screen gamma voltage is higher than the second main screen gamma voltage; the second power module group comprises a third sub power converter and a fourth sub power converter, the third sub power converter is used for providing a first sub screen gamma voltage for the data driver, the fourth sub power converter is used for providing a second sub screen gamma voltage for the data driver, and the first sub screen gamma voltage is higher than the second sub screen gamma voltage.
The gamma voltage ranges of the main screen provided by the first power module group and the gamma voltage ranges of the auxiliary screen provided by the second power module group are different, the gamma voltage of the first main screen is greater than the gamma voltage of the first auxiliary screen, and the gamma voltage of the second auxiliary screen is less than the gamma voltage of the second main screen, so that the maximum brightness of the main screen area is consistent with that of the auxiliary screen area.
The gamma voltage module also comprises a resistance module and a digital-to-analog converter, wherein the resistance module is connected with the first power module group and the second power module group and is used for receiving the main screen gamma voltage output by the first power module group and regulating the main screen gamma voltage to be between the first main screen gamma voltage and the second main screen gamma voltage; or the second power module group is used for receiving the sub-screen gamma voltage output by the second power module group and regulating the sub-screen gamma voltage to be between the first sub-screen gamma voltage and the second sub-screen gamma voltage; the digital-to-analog converter is used for converting the gamma voltage of the main screen or the gamma voltage of the auxiliary screen into an analog voltage.
The gamma voltage module comprises an operational amplifier for amplifying the analog voltage output by the digital-to-analog converter and outputting the amplified analog voltage to the data driver, so that the data driver generates a main screen driving voltage or a sub screen driving voltage based on the main screen gamma voltage or the sub screen gamma voltage.
The display panel also comprises a scanning driver, a time sequence controller and a light-emitting control driver, wherein the time sequence controller is used for controlling the scanning driver to output scanning signals in a time sequence manner and controlling the data driver to output main screen driving voltage and auxiliary screen driving voltage in a time sequence manner; the light emission control driver is used for outputting light emission control signals to the main screen area and the sub screen area.
Wherein, the aperture opening ratio of the auxiliary screen area is larger than that of the main screen area.
The display panel comprises pixel units arranged in an array, wherein each pixel unit consists of a plurality of sub-pixels; the display panel also comprises a plurality of pixel driving units, one pixel driving unit in the auxiliary screen area drives a plurality of sub-pixels, and one pixel driving unit in the main screen area drives one sub-pixel.
The application also comprises a second technical scheme, and the display device comprises a display panel driving circuit and the display panel, wherein the display panel driving circuit is used for driving the display panel to emit light.
The present application further includes a third technical solution, a driving method of a display panel, the display panel is divided into a main screen area and an auxiliary screen area, and the driving method of the display panel includes:
regulating and controlling the working states of the first power module group and the second power module group to provide a main screen gamma voltage for the data driver, so that the data driver provides a main screen driving voltage for the main screen area based on the main screen gamma voltage and further drives the main screen area to emit light;
and regulating and controlling the working states of the first power module group and the second power module group to provide the auxiliary screen gamma voltage for the data driver, so that the data driver provides the auxiliary screen driving voltage for the auxiliary screen region based on the auxiliary screen gamma voltage and further drives the auxiliary screen region to emit light.
When the data driver needs to output the main screen driving voltage to the main screen area, the first sub power converter and the second sub power converter are controlled to work, and the third sub power converter and the fourth sub power converter are controlled to not work simultaneously so as to output the first main screen gamma voltage and the second main screen gamma voltage to the data driver, so that the data driver provides the main screen driving voltage for the main screen area based on the first main screen gamma voltage and the second main screen gamma voltage.
When the data driver needs to output the auxiliary screen driving voltage to the auxiliary screen area, the third sub power converter and the third sub power converter are controlled to work, meanwhile, the first sub power converter and the second sub power converter are controlled to be out of work, so that the first auxiliary screen gamma voltage and the second auxiliary screen gamma voltage are output to the data driver, and the data driver provides the auxiliary screen driving voltage for the auxiliary screen area based on the first auxiliary screen gamma voltage and the second auxiliary screen gamma voltage.
The beneficial effect of this application is: be different from prior art, the display panel of this application embodiment is through setting up two sets of power module group in with gamma voltage module, make two sets of power module group provide gamma voltage for data driver alone, through regulating and controlling first power module group and second power module group, make data driver can provide main screen drive voltage and vice screen drive voltage for main screen district and vice screen district respectively, drive main screen district and vice screen district with satisfying different drive voltages, make the luminance in main screen district and vice screen district can freely be regulated and control, and then make the main screen district and the vice screen district of display panel show unanimously, improve the uniformity that the display panel full-screen shows, improve the display effect of display panel.
Drawings
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of an embodiment of a gamma voltage module according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The embodiment of the present application provides a display panel, as shown in fig. 1 and fig. 2, the display panel is divided into a main screen area 11 and an auxiliary screen area 12, a photosensitive element (not shown) is correspondingly disposed below the auxiliary screen area 12, the display panel includes a data driver 100 and a gamma voltage module 200, the data driver 100 is configured to provide a main screen driving voltage for the main screen area 11 and provide an auxiliary screen driving voltage for the auxiliary screen area 12; the gamma voltage module 200 includes a first power module group 210 and a second power module group 220, the first power module group 210 is configured to provide a main screen gamma voltage for the data driver 100, so that the data driver 100 provides a main screen driving voltage for the main screen region 11 based on the main screen gamma voltage; the second power module group 220 is used to provide the sub-screen gamma voltage to the data driver 100, so that the data driver 100 provides the sub-screen driving voltage to the sub-screen region 12 based on the sub-screen gamma voltage.
In the display panel of the embodiment of the application, two power module groups are arranged in the gamma voltage module 200, so that the two power module groups independently provide gamma voltages for the data driver 100, the data driver 100 can respectively provide a main screen driving voltage and an auxiliary screen driving voltage for the main screen area 11 and the auxiliary screen area 12 by regulating and controlling the first power module group 210 and the second power module group 220, so that the main screen driving voltage and the auxiliary screen driving voltage can be different, so as to meet the requirement that different driving voltages drive the main screen area 11 and the auxiliary screen area 12, and the driving voltages of the main screen area 11 and the auxiliary screen area 12 can be regulated and controlled conveniently, so that the brightness of the main screen area 11 and the auxiliary screen area 12 can be regulated and controlled freely, so that the brightness of the main screen area 11 and the auxiliary screen area 12 can be regulated to be the same as required, the main screen area 11 and the auxiliary screen area 12 of the display panel can display consistently, and the consistency of the full-screen display of the display panel can be improved, the display effect of the display panel is improved.
The display panel of the embodiment of the present application includes an organic light emitting diode display panel, and particularly, may include a passive matrix type oled (pmoled) and an active matrix type oled (amoled).
In the embodiment of the present application, the aperture opening ratio of the auxiliary screen area 12 is greater than the aperture opening ratio of the main screen area 11, and the aperture opening ratio of the auxiliary screen area 12 is set to be greater than the aperture opening ratio of the main screen area 11, so that the light transmittance of the auxiliary screen area 12 is enhanced, and the influence of the display panel of the auxiliary screen area 12 on the photosensitive element is reduced.
In the embodiment of the present application, the display panel includes pixel units (not shown) arranged in an array, and each pixel unit is composed of a plurality of sub-pixels (not shown); the display panel further includes a plurality of pixel driving units (not shown), one pixel driving unit in the sub-screen region 12 drives a plurality of sub-pixels, and one pixel driving unit in the main screen region 11 drives one sub-pixel. In the embodiment of the present application, one pixel driving unit is adopted to control a plurality of sub-pixels in the sub-screen area 12, so that the number of pixel driving units corresponding to the sub-screen area 12 can be reduced.
In this embodiment of the application, the aperture opening ratios of the main screen area 11 and the sub-screen area 12 are different, and the pixel driving circuits of the main screen area 11 and the sub-screen area 12 control the number of sub-pixels to be different, so that the driving voltages required by the main screen area 11 and the sub-screen area 12 are different, and the gamma voltages of the main screen and the sub-screen required by the first power module group 210 and the second power module group 220 are different. In the embodiment of the present application, it is necessary that the gamma voltage corresponding to the first main screen is greater than the gamma voltage corresponding to the first auxiliary screen, and the gamma voltage corresponding to the second main screen is greater than the gamma voltage corresponding to the second auxiliary screen, so that the requirement of the black voltage of the main screen area 11 can be met, and the maximum brightness of the auxiliary screen area 12 can reach the maximum brightness consistent or consistent with the maximum brightness of the main screen area 11. The first main screen gamma voltage is higher than the second main screen gamma voltage, namely the first main screen gamma voltage is a main screen gamma high voltage, and the second main screen gamma voltage is a main screen gamma low voltage; the first sub-screen gamma voltage is higher than the second sub-screen gamma voltage, namely the first sub-screen gamma voltage is a sub-screen gamma high voltage, and the second sub-screen gamma voltage is a sub-screen gamma low voltage. For example, in an embodiment of the present application, the primary screen area 11 correspondingly requires a first primary screen gamma voltage of 6.5V and a second primary screen gamma voltage of 2V, the primary screen area 11 correspondingly requires a primary screen gamma voltage range of 6.5V-2V, the secondary screen area 12 correspondingly requires a first secondary screen gamma voltage of 5.8V and a second secondary screen gamma voltage of 0V, and the secondary screen area 12 correspondingly requires a secondary screen gamma voltage range of 5.8V-0V. In the embodiment of the present application, the first main panel gamma voltage is a high voltage (VGMP1), the second main panel gamma voltage is a low voltage (VGSP1), the second main panel gamma voltage is a high voltage (VGMP2), and the second sub panel gamma voltage is a low voltage (VGSP 1).
In this embodiment, the first power module group 210 includes a first sub power converter 211 and a second sub power converter 212, the first sub power converter 211 is configured to provide the data driver 100 with a first main screen gamma voltage, and the second sub power converter 212 is configured to provide the data driver 100 with a second main screen gamma voltage; the second power module group 220 includes a third sub power converter 221 and a fourth sub power converter 222, wherein the third sub power converter 221 is configured to provide the first sub screen gamma voltage for the data driver 100, and the fourth sub power converter 222 is configured to provide the second sub screen gamma voltage for the data driver 100. In this embodiment, two sub power converters are respectively arranged on the first power module group 210 and the second power module group 220, the four sub power converters individually control the gamma high voltage and the gamma low voltage of the main screen area 11 and the gamma high voltage and the gamma low voltage of the auxiliary screen area 12, so that the four sub power converters can be individually controlled to output the first main screen gamma voltage, the second main screen gamma voltage, the first auxiliary screen gamma voltage and the second auxiliary screen gamma voltage which are different from each other, so as to meet the requirements of the main screen area 11 and the auxiliary screen area 12 on different driving voltages, thereby being convenient for individually regulating and controlling the driving voltages of the main screen area 11 and the auxiliary screen area 12, and making the brightness of the main screen area 11 and the brightness of the auxiliary screen area 12 consistent. In the embodiment of the present application, the first sub power converter 211, the second sub power converter 212, the third sub power converter 221, and the fourth sub power converter 222 are DC-DC power converters.
In other embodiments, the first power module group 210 and the second power module group 220 may also be respectively provided with three, four, or more sub power converters, and different sub power converters are connected in series or in parallel, so that the first power module group 210 can independently provide the first main panel gamma voltage and the second main panel gamma voltage for the data driver 100, and the second power module group 220 can independently provide the first sub panel gamma voltage and the second sub panel gamma voltage for the data driver 100.
In this embodiment, when the data driver 100 needs to output the main screen driving voltage to the main screen area 11, the first sub power converter 211 and the second sub power converter 212 are controlled to operate to output the first main screen gamma voltage and the second main screen gamma voltage to the data driver 100, so that the data driver 100 provides the main screen driving voltage for the main screen area 11 based on the first main screen gamma voltage and the second sub screen gamma voltage; and controls the third sub power converter 221 and the fourth sub power converter 222 to be non-operated. In the embodiment of the present application, by controlling the first sub power converter 211 and the second sub power converter 212 to operate, the third sub power converter 221 and the fourth sub power converter 222 are in a non-operating state, so that the third sub power converter 221 and the fourth sub power converter 222 do not affect the first main screen gamma voltage and the second main screen gamma voltage which are output to the data driver 100 by the gamma voltage module 200 as a whole; the data driver 100 is further caused to output a main screen driving voltage for the main screen region 11 based on the first and second main screen gamma voltages. In the embodiment of the present application, when the data driver 100 needs to output the main screen driving voltage to the main screen area 11, the first sub power converter 211 and the second sub power converter 212 are controlled to operate, and the third sub power converter 221 and the fourth sub power converter 222 are in the non-operating state, so that the main screen driving voltage output by the data driver 100 can meet the requirement of the main screen area 11, the gray scale transition of the main screen area 11 is better, and the display effect of the main screen area 11 is better.
In this embodiment, when the data driver 100 needs to output the sub-screen driving voltage to the sub-screen 12, the third sub-power converter 221 and the third sub-power converter 221 are controlled to operate to output the first sub-screen gamma voltage and the second sub-screen gamma voltage to the data driver 100, so that the data driver 100 provides the sub-screen driving voltage for the sub-screen 12 based on the first sub-screen gamma voltage and the second sub-screen gamma voltage, and controls the first sub-power converter 211 and the second sub-power converter 212 to be non-operating. In the embodiment of the present application, by controlling the third sub power converter 221 and the fourth sub power converter 222 to operate, the first sub power converter 211 and the second sub power converter 212 are in a non-operating state, so that the first sub power converter 211 and the second sub power converter 212 do not affect the first sub-screen gamma voltage and the second sub-screen gamma voltage which are output to the data driver 100 by the gamma voltage module 200 as a whole; the data driver 100 is further caused to output a sub screen driving voltage for the sub screen region 12 based on the first sub screen gamma voltage and the second sub screen gamma voltage. In the embodiment of the present application, when the data driver 100 needs to output the sub-screen driving voltage to the sub-screen 12, the first sub-power converter 211 and the second sub-power converter 212 are in the non-operating state by controlling the third sub-power converter 221 and the fourth sub-power converter 222 to operate, so that the sub-screen driving voltage output by the data driver 100 can meet the requirement of the sub-screen 12, the gray scale transition of the sub-screen 12 is better, and the display effect of the sub-screen 12 is better.
In this embodiment, the range of the gamma voltage of the main screen provided by the first power module group 210 is different from the range of the gamma voltage of the auxiliary screen provided by the second power module group 220 for the data driver 100, the gamma voltage of the first main screen is greater than the gamma voltage of the first auxiliary screen, and the gamma voltage of the second auxiliary screen is less than the gamma voltage of the second main screen, so that the maximum brightness of the main screen 11 is consistent with the maximum brightness of the auxiliary screen 12. In the embodiment of the present application, by controlling the first power module group 210 and the second power module group 220, the first main screen gamma voltage is greater than the first auxiliary screen gamma voltage, the second auxiliary screen gamma voltage is less than the second auxiliary screen gamma voltage, it can be satisfied that the main screen driving voltage and the auxiliary screen driving voltage required by the main screen area 11 and the auxiliary screen area 12 are different, so as to satisfy the different aperture opening ratios of the main screen area 11 and the auxiliary screen area 12, the number of the sub-pixels controlled by the pixel driving circuits of the main screen area 11 and the auxiliary screen area 12 is different, and the main screen driving voltage and the auxiliary screen driving voltage obtained by the main screen area 11 and the auxiliary screen area 12 are different, so that the maximum brightness of the main screen area 11 and the auxiliary screen area 12 is consistent.
In this embodiment, the gamma voltage module 200 further includes a resistor module 230 and a digital-to-analog converter 240, wherein the resistor module 230 is connected to the first power module group 210 and the second power module group 220, and is configured to receive the main screen gamma voltage output by the first power module group 210 and adjust the main screen gamma voltage to be between the first main screen gamma voltage and the second main screen gamma voltage; or for receiving the sub-screen gamma voltage output by the second power module group 220 and adjusting the sub-screen gamma voltage to be between the first sub-screen gamma voltage and the second sub-screen gamma voltage; the digital-to-analog converter 240 is used to convert the main screen gamma voltage or the sub screen gamma voltage into an analog voltage. In the embodiment of the present application, the first main screen gamma voltage is a dark-state voltage of the main screen area 11 to control a 0 gray scale voltage, the second main screen gamma voltage is a bright-state voltage of the main screen area 11 to control a 255 gray scale voltage, and other gray scale voltages of the main screen area 11 are divided by the resistor module 230 to be adjusted; the first sub-screen gamma voltage is a dark-state voltage of the sub-screen area 12 and controls a 0 gray scale voltage, the second sub-screen gamma voltage is a bright-state voltage of the sub-screen area 12 and controls a 255 gray scale voltage, and other gray scale voltages of the sub-screen area 12 are adjusted by dividing the voltage through the resistor module 230; the resistance module 230 can adjust the magnitude range of the main screen gamma voltage or the sub screen gamma voltage, and output the adjusted main screen gamma voltage or sub screen gamma voltage to the digital-to-analog converter 240 to be converted into an analog voltage.
In this embodiment, the gamma voltage module 200 includes an operational amplifier 250 for amplifying the analog voltage outputted from the digital-to-analog converter 240 and outputting the amplified analog voltage to the data driver 100, so that the data driver 100 generates the main screen driving voltage or the sub screen driving voltage based on the main screen gamma voltage or the sub screen gamma voltage. In the embodiment of the present application, the operational amplifier 250 is further provided to facilitate amplification of the analog voltage.
In the embodiment of the present application, the display panel further includes a scan driver 300, a timing controller 400, and a light emission control driver 500, wherein the timing controller 400 is configured to control the scan driver 300 to output a scan signal in a timing manner, and control the data driver 100 to output a main screen driving voltage and a sub screen driving voltage in a timing manner; the light emission control driver 500 is used to output light emission control signals for the main panel 11 and the sub-panel 12.
In the embodiment of the present application, the timing controller 400 may generate a scan driving control signal and a data driving control signal based on an externally input driving signal and may be respectively supplied to the scan driver 300 and the data driver 100, and the scan driver 300 may output a scan signal in response to the scan driving control signal, sequentially supplying the scan signal to scan lines (not shown). The data driving control signal generated by the timing controller 400 is supplied to the data driver 100 to control the data driver 100 to output the main screen driving voltage and the sub screen driving voltage at a timing so as to supply the main screen driving voltage to the main screen region 11 and the sub screen driving voltage to the sub screen region 12. In the embodiment of the present application, the timing controller 400 may further generate a control light emission driving control signal to be supplied to the light emission control driver 500, and the light emission control driver 500 is configured to provide the light emission control signal to a light emission control line (not shown).
The application also comprises a second technical scheme, and the display device comprises a display panel driving circuit and the display panel, wherein the display panel driving circuit is used for driving the display panel to emit light. The display device of the embodiment of the application, wherein, display panel is through setting up two sets of power module group in with gamma voltage module 200, make two sets of power module group provide gamma voltage for data driver 100 alone, through regulating and controlling first power module group 210 and second power module group 220, make data driver 100 can provide main screen drive voltage and vice screen drive voltage for main screen district 11 and vice screen district 12 respectively, drive main screen district 11 and vice screen district 12 in order to satisfy different drive voltages, make the luminance of main screen district 11 and vice screen district 12 can freely be regulated and control, and then make display device's main screen district 11 and vice screen district 12 show unanimously, improve the uniformity that display device displayed in full-screen, improve display device's display effect.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.
Claims (10)
1. A display panel divided into a main screen area and a sub screen area, the display panel comprising:
the data driver is used for providing a main screen driving voltage for the main screen area and providing an auxiliary screen driving voltage for the auxiliary screen area;
a gamma voltage module, including a first power module group and a second power module group, for providing a main screen gamma voltage for the data driver, so that the data driver provides the main screen driving voltage for the main screen area based on the main screen gamma voltage; the second power module group is used for providing an auxiliary screen gamma voltage for the data driver, so that the data driver provides the auxiliary screen driving voltage for the auxiliary screen area based on the auxiliary screen gamma voltage.
2. The display panel of claim 1, wherein the first power module group comprises a first sub power converter and a second sub power converter, the first sub power converter is configured to provide a first main screen gamma voltage for the data driver, the second sub power converter is configured to provide a second main screen gamma voltage for the data driver, and the first main screen gamma voltage is higher than the second main screen gamma voltage;
the second power module group comprises a third sub power converter and a fourth sub power converter, the third sub power converter is used for providing a first sub screen gamma voltage for the data driver, the fourth sub power converter is used for providing a second sub screen gamma voltage for the data driver, and the first sub screen gamma voltage is higher than the second sub screen gamma voltage.
3. The display panel of claim 2, wherein the main screen gamma voltage provided by the first power module group and the sub screen gamma voltage provided by the second power module group are different in range, the first main screen gamma voltage is greater than the first sub screen gamma voltage, and the second sub screen gamma voltage is less than the second main screen gamma voltage, so that the maximum brightness of the main screen area and the sub screen area are the same.
4. The display panel of claim 2, wherein the gamma voltage module further comprises:
the resistance module is connected with the first power supply module group and the second power supply module group, and is used for receiving the main screen gamma voltage output by the first power supply module group and adjusting the main screen gamma voltage to be between the first main screen gamma voltage and the second main screen gamma voltage; or the second power module group is used for receiving the sub-screen gamma voltage output by the second power module group and adjusting the sub-screen gamma voltage to be between the first sub-screen gamma voltage and the second sub-screen gamma voltage;
a digital-to-analog converter for converting the primary screen gamma voltage or the secondary screen gamma voltage into an analog voltage;
preferably, the gamma voltage module further includes:
an operational amplifier for amplifying the analog voltage output by the digital-to-analog converter and outputting the amplified analog voltage to the data driver, so that the data driver generates the main screen driving voltage or the sub screen driving voltage based on the main screen gamma voltage or the sub screen gamma voltage.
5. The display panel according to claim 1, characterized in that the display panel further comprises:
the time sequence controller is used for controlling the time sequence of the scanning driver to output scanning signals and controlling the time sequence of the data driver to output the main screen driving voltage and the auxiliary screen driving voltage;
and a light emission control driver for outputting a light emission control signal to the main screen area and the sub screen area.
6. The display panel according to claim 1, wherein the aperture ratio of the sub screen area is larger than the aperture ratio of the main screen area.
7. The display panel according to claim 1, wherein the display panel comprises pixel units arranged in an array, the pixel units being composed of a plurality of sub-pixels;
the display panel further comprises a plurality of pixel driving units, one pixel driving unit in the auxiliary screen area drives a plurality of sub-pixels, and one pixel driving unit in the main screen area drives one sub-pixel.
8. A display device comprising a display panel driving circuit for driving the display panel to emit light and the display panel according to any one of claims 1 to 7.
9. A driving method of a display panel, the display panel being divided into a main screen area and a sub screen area, the driving method of the display panel comprising:
regulating and controlling the working states of the first power module group and the second power module group to provide a main screen gamma voltage for the data driver, so that the data driver provides the main screen driving voltage for the main screen area based on the main screen gamma voltage to drive the main screen area to emit light;
and regulating the working states of the first power module group and the second power module group to provide an auxiliary screen gamma voltage for the data driver, so that the data driver provides the auxiliary screen driving voltage for the auxiliary screen area based on the auxiliary screen gamma voltage and further drives the auxiliary screen area to emit light.
10. The method of claim 9, wherein the adjusting the operating status of the first power module group to provide the main panel gamma voltage for the data driver comprises:
controlling a first sub power converter and a second sub power converter of the first power module group to be in an operating state, and simultaneously controlling a third sub power converter and a fourth sub power converter of the second power module group to be in a non-operating state to output a first main screen gamma voltage and a second main screen gamma voltage to the data driver, so that the data driver provides the main screen driving voltage for the main screen area based on the first main screen gamma voltage and the second main screen gamma voltage, wherein the first main screen gamma voltage is higher than the second main screen gamma voltage;
controlling the first sub power converter and the second sub power converter to be in a non-working state, and simultaneously controlling the third sub power converter and the fourth sub power converter to be in a working state to output a first sub screen gamma voltage and a second sub screen gamma voltage to the data driver, so that the data driver provides the sub screen driving voltage based on the first sub screen gamma voltage and the second sub screen gamma voltage, and the first sub screen gamma voltage is higher than the second sub screen gamma voltage.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115631713A (en) * | 2022-11-09 | 2023-01-20 | 武汉天马微电子有限公司 | Driving module and driving method thereof, display panel and display device |
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