CN111951714B - Partial display driving method - Google Patents
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- CN111951714B CN111951714B CN202010934067.8A CN202010934067A CN111951714B CN 111951714 B CN111951714 B CN 111951714B CN 202010934067 A CN202010934067 A CN 202010934067A CN 111951714 B CN111951714 B CN 111951714B
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
Abstract
A partial display driving method includes the steps of: driving a first region of the pixel array in a frame to display a first portion of the image in the first region; and disabling a second region of the pixel array in the frame such that the second region is not displayed.
Description
Technical Field
The present disclosure relates to a driving method, and more particularly, to a driving method for partial display of a display.
Background
With the technology of display panels becoming more and more popular, the resolution of display panels is also rapidly increasing. The refresh rate of the display panel is related to the performance of the display panel, and the operation of the display panel is also becoming critical in order to improve the performance.
Disclosure of Invention
An embodiment of the present disclosure relates to a partial display driving method including the steps of: driving a first region of the pixel array in a frame to display a first portion of the image in the first region; and disabling a second region of the pixel array in the frame such that the second region is not displayed.
In summary, the partial display driving method provided by some embodiments of the present disclosure can achieve a higher frame update rate. The problem that the pixels of the idle part occupy the efficiency of the display system can be avoided.
Drawings
The present disclosure may be more completely understood by reading the following detailed description of the embodiments in connection with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a display system shown in accordance with some embodiments of the present disclosure;
FIG. 2 is a schematic diagram illustrating the operation of the pixel array of FIG. 1 according to some embodiments of the present disclosure;
FIG. 3 is a schematic diagram of a pixel shown according to some embodiments of the present disclosure;
FIG. 4 is a schematic diagram of a pixel shown according to other embodiments of the present disclosure;
FIG. 5 is a schematic diagram of a pixel shown according to some alternative embodiments of the present disclosure;
FIG. 6 is a schematic diagram of a pixel array shown according to some embodiments of the present disclosure;
FIG. 7 is a schematic diagram of a pixel array shown according to some embodiments of the present disclosure; and
fig. 8 is a flow chart illustrating a method of operating the display system of fig. 1, according to some embodiments of the present disclosure.
Reference numerals illustrate:
100: display system
110: pixel array
120: driving circuit
130: processing circuit
140: control circuit
150: power supply circuit
F: frame(s)
SF1: sub-frames
SF2: sub-frames
SF3: sub-frames
SF4: sub-frames
110a: region(s)
110b: region(s)
300: pixel arrangement
400: pixel arrangement
500: pixel arrangement
T1: switch unit
T2: switch unit
T3: switch unit
T4: switch unit
C: capacitance device
L: light-emitting unit
OVDD: supply voltage
OVSS: supply voltage
IDS: operating current
VANO: operating voltage
S1: drive signal
S2: drive signal
S3: drive signal
VDC: drive signal
S data : data signal
SWH: switching device
SWL: switching device
PEN1: power supply enabling control signal
PEN2: power supply enabling control signal
610: pixel array
710: pixel array
800: partial display driving side
S810: operation of
S820: operation of
Detailed Description
The following detailed description of the embodiments is provided in conjunction with the accompanying drawings, but the specific embodiments described are merely illustrative of the embodiments of the disclosure and are not intended to limit the embodiments of the disclosure, and the description of the operation of the structure is not intended to limit the order in which the operations may be performed, any arrangement of elements that may be rearranged to produce a device with equivalent technical results is within the scope of the disclosure of the embodiments of the disclosure.
As used herein, "coupled" or "connected" may mean that two or more elements are in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, or that two or more elements may operate or function with each other.
Reference is made to fig. 1. Fig. 1 is a schematic diagram of a display system 100, shown in accordance with some embodiments of the present disclosure. As shown in fig. 1, the display system 100 includes a pixel array 110, a driving circuit 120, a processing circuit 130, a control circuit 140, and a power supply circuit 150. The driving circuit 120, the processing circuit 130 and the control circuit 140 are coupled to the pixel array 110, and the driving circuit 120 and the processing circuit 130 are also coupled to the control circuit 140. The power supply circuit 150 is coupled to the pixel array 110, the driving circuit 120, the processing circuit 130 and the control circuit 140.
In some embodiments, the pixel array 110 includes a plurality of pixels for receiving driving signals (e.g., the driving signals S1, S2, S3, V shown in FIGS. 3-7 DC ) And data signals (e.g., data signal S shown in fig. 3-7 data ) And displaying an image corresponding to the data signal according to the driving signal and the data signal.
In some embodiments, the driving circuit 120 is used to transmit driving signals S1, S2, S3, V DC To the pixel array 110 to drive the pixel array 110. More specifically, the driving circuit 120 is used for transmitting driving signals S1, S2, S3, V DC To pixel array 110 to enable and/or disable the pixel arrayAt least one pixel of the column 110. In some embodiments, the driving circuit 120 is implemented with a shift register (shift register). In some embodiments, the drive circuit 120 is also referred to as a gate drive circuit.
In some embodiments, the processing circuit 130 is configured to transmit the data signal S data To the pixel array 110, the pixel array 110 can be configured according to the data signal S data And (5) displaying.
In some embodiments, the control circuit 140 is configured to control the driving circuit 120 and the processing circuit 130, so that the driving circuit 120 can drive the pixel array 110 according to a predetermined timing, and the processing circuit 130 can transmit the data signal S according to the predetermined timing data The pixel array 110 is also displayed according to a predetermined timing sequence. In some embodiments, control circuit 140 is also referred to as a timing control circuit.
In some embodiments, the power supply circuit 150 is configured to provide supply voltages (e.g., the supply voltages OVDD, OVSS shown in fig. 3-7) to the driving circuit 120, the processing circuit 130, the pixel array 110 and the control circuit 140 for performing operations by the driving circuit 120, the processing circuit 130, the pixel array 110 and the control circuit 140.
The above-described arrangement of the display system 100 is for illustrative purposes only. A variety of different display systems 100 are within the contemplation and scope of this disclosure. For example, in some embodiments, the control circuit 140 and the power supply circuit 150 in the display system 100 are the same circuit, i.e. the control circuit 140 is used to provide the supply voltages OVDD and OVSS to the driving circuit 120, the processing circuit 130 and the pixel array 110. Also or for example, in other embodiments, the power supply circuit 150 is a circuit external to the display system 100.
Reference is made to fig. 2. Fig. 2 is a schematic diagram illustrating the operation of the pixel array 110 of fig. 1, according to some embodiments of the present disclosure. In some embodiments, the operation of the pixel array 110 in one frame F includes a plurality of subframes (sub-frames). For example, in fig. 2, the pixel array 110 includes 4 subframes SF1, SF2, SF3, SF4 in one frame F, and the operation sequence thereof is sequentially from the subframe SF1 to the subframe SF4.
In some embodiments, the pixel array 110 is divided into a region 110a and a region 110b. The region 110a is for display and the region 110b is for not display. As shown in fig. 2, in the subframes SF1 to SF4, the region 110a and the region 110b are respectively located at different positions in the pixel array 110, and the 4 regions 110a in the subframes SF1 to SF4 collectively show the entire range of the pixel array 110. In other words, the image displayed by the pixel array 110 in one frame F displays 4 portions of the image in 4 areas 110a in subframes SF1 to SF4, respectively. Thus, in a frame F, the entire pixel array 110 is displayed, and all portions of the image are displayed.
In some embodiments, the driving circuit 120 is configured to enable the region 110a to display an image and disable the region 110b to not display an image. In some embodiments, the driving circuit 120 is configured to enable a plurality of rows (row) in the pixel array 110, and disable the remaining columns that are not enabled. The enabled columns correspond to region 110a and the disabled columns correspond to region 110b. In some further embodiments, the driving circuit 120 is configured to sequentially enable the columns in the pixel array 110 (e.g., in the order from the sub-frame SF1 to the sub-frame SF 4), and to sequentially disable the remaining columns not enabled during one frame F, and accordingly, the driving circuit 120 is configured to sequentially disable the columns in the pixel array 110.
In some other embodiments, the driving circuit 120 is used to enable the region 110a to display an image, and the power supply circuit 150 is used to disable the region 110b to not display an image.
In some embodiments, in the subframe SF1, the pixel array 110 is used to receive the data signal S data To display a portion of the image on the region 110a. Accordingly, in the subframes SF 2-SF 4, the pixel array 110 is used for receiving the data signal S data To display other portions of the image on the corresponding areas 110a.
In some embodiments, in subframes SF 1-SF 4, the driving circuit 120 is configured to disable the region 110b. In other words, the pixel array 110 is turned on the region 110b due to the disabled region 110b, and the data signal S is generated on the region 110b data And (5) not performing display operation. In some embodiments, the region 110b in the pixel array 110 does not receive the data signal S data . In some implementationsIn an embodiment, the disabled region 110b appears black.
In some implementations, a portion of the pixel array that does not display a picture is not disabled, receives the image data signal, and displays black according to the received image data signal. Therefore, the portion of the pixel array that does not display the picture consumes time and circuit operation cost to perform the display operation to display black.
In contrast to the above, in the embodiment of the disclosure, the region 110b in the pixel array 110 is disabled, and the region 110b does not perform the display operation. Therefore, the area 110b of the pixel array 110 does not consume time and circuit operating costs, thereby improving the performance of the display system 100.
For example, in the subframe SF1, the area 110a includes 1/4 of the number of columns of the entire pixel array 110. Because region 110b is disabled, display system 100 only needs to process portions of region 110a when performing a picture update. Compared to performing the frame update over the entire pixel array 110, the display system 100 can increase the frame update rate by 4 times because the display system 100 only performs the frame update over the region 110a, thereby improving the performance of the display system 100.
The columns, ratios and multiples mentioned above are illustrative only. Various columns, ratios, and multiples are within the contemplation and scope of this disclosure.
Reference is made to fig. 3. Fig. 3 is a schematic diagram of a pixel 300 shown in accordance with some embodiments of the present disclosure. Pixel 300 is a schematic diagram of one of the pixels in pixel array 110 shown in fig. 1. In some embodiments, pixel 300 may represent any one pixel in pixel array 110. For simplicity, fig. 3 is explained in terms of the symbols shown in fig. 1-2. As shown in fig. 3, the pixel 300 includes a switch unit T1, a switch unit T2, a switch unit T3, a capacitor C and a light emitting unit L. In some embodiments, the switch units T1, T2 and T3 are P-type transistors. In some embodiments, the light emitting unit L is an organic light emitting diode.
As shown in fig. 3, the first end of the switch unit T1 is configured to receive the data signal S transmitted by the processing circuit 130 data The control terminal of the switch unit T1 is configured to receive the driving signal S1 transmitted by the driving circuit 120, and the second terminal of the switch unit T1 is coupled to the second terminal of the capacitor C1 and the control terminal of the switch unit T2. The first terminal of the capacitor C1 and the first terminal of the switching unit T2 are used for receiving the supply voltage OVDD provided by the power supply circuit 150. The second terminal of the switch unit T2 is coupled to the first terminal of the switch unit T3. The control end of the switch unit T3 is configured to receive the driving signal S2 transmitted by the driving circuit 120, and the second end of the switch unit T3 is coupled to the anode of the light emitting unit L. The cathode of the light emitting unit L is used for receiving the supply voltage OVSS provided by the power supply circuit 150.
The configuration of the pixel 300 described above is for illustrative purposes only. Various configurations of pixels 300 are within the contemplation and scope of this disclosure. For example, in some other embodiments, the pixels in the pixel array 110 may be the pixels 400 and 500 shown in fig. 4-5. The details thereof are described later with reference to fig. 4 to 5.
When the pixel 300 is located in the region 110a of the pixel array 110, the pixel 300 is enabled. The driving circuit 120 transmits the driving signals S1 and S2 to the control terminals of the switch units T1 and T3, respectively, to turn on the switch units T1 and T3. The processing circuit 130 transmits a data signal S data To a first end of the switching unit T1. In response to the data signal S data The pixel 300 generates an operating current I DS The switching unit T3 transmits an operating current I DS To the light emitting unit L, the light emitting unit L emits light. In other words, the light emitting unit L responds to the data signal S data And (5) emitting light.
When pixel 300 is located in region 110b of pixel array 110, pixel 300 is disabled. The driving circuit 120 transmits a driving signal S2 to the control terminal of the switching unit T2 to turn off the switching unit T3. In response to the driving signal S2, the switching unit T3 is turned off and reduces the operating current I transmitted to the light emitting unit L DS To disable the light emitting unit L. In some embodiments, the driving circuit 120 transmits the driving signal S1 to the control terminal of the switching unit T1 to turn off the switching unit T1. The processing circuit 130 transmits a data signal S data To the first end of the switch unit T1, the pixel 300 is not connected due to the switch unit T1 being turned offReceive data signal S data 。
Refer to fig. 4. Fig. 4 is a schematic diagram of a pixel 400 shown in accordance with other embodiments of the present disclosure. The pixel 400 is a schematic diagram of one of the plurality of pixels in the pixel array 110 shown in fig. 1. In some embodiments, pixel 400 may represent any one pixel in pixel array 110. Pixel 400 is similar to pixel 300 in fig. 3. For simplicity, fig. 4 is explained in terms of the symbols shown in fig. 1-2, with similar elements following the symbols of fig. 3. As shown in fig. 4, the pixel 400 further includes a switching unit T4 compared to the pixel 300.
As shown in fig. 4, the first end of the switch unit T4 is coupled to the second end of the switch unit T3 and the anode of the light emitting unit L, and the second end of the switch unit T4 is electrically coupled to the control end and is configured to receive the driving signal S3 transmitted by the driving circuit 120.
The above-described configuration of the pixel 400 is for illustrative purposes only. Various configurations of pixels 400 are within the contemplation and scope of this disclosure.
When the pixel 400 is located in the region 110a of the pixel array 110, the pixel 400 is enabled. The driving circuit 120 transmits the driving signals S1 and S2 to the control terminals of the switch units T1 and T3, respectively, to turn on the switch units T1 and T3. The driving circuit 120 transmits a driving signal S3 to the control terminal of the switching unit T4 to turn off the switching unit T4. The processing circuit 130 transmits a data signal S data To a first end of the switching unit T1. In response to the data signal S data The pixel 400 generates an operating current I DS The switching unit T3 transmits an operating current I DS To the light emitting unit L, the light emitting unit L emits light. In other words, the light emitting unit L responds to the data signal S data And (5) emitting light.
When pixel 400 is located in region 110b of pixel array 110, pixel 400 is disabled. The driving circuit 120 transmits a driving signal S3 to the control terminal of the switching unit T4 to turn on the switching unit T4. In response to the driving signal S3, the switching unit T4 is turned on, and the switching unit T4 thereby outputs the operating voltage V ANO At the first end of the switching unit T4, the light emitting unit L is disabled.
In some embodiments, the light emitting unit L has a threshold voltage Vth, and emits light when the voltage difference between the anode and the cathode of the light emitting unit L is greater than the threshold voltage Vth. As described above, in some embodiments, the pixel 400 in the region 110b of the pixel array 110 does not emit light when the voltage on the anode of the light emitting unit L is not greater than the sum of the supply voltage VOSS and the threshold voltage Vth. That is, when the switching unit T4 outputs the operating voltage V on the anode of the light emitting unit L ANO When not more than the sum of the supply voltage VOSS and the threshold voltage Vth, the light emitting unit L does not emit light. In some embodiments, the threshold voltage Vth of the light emitting unit L is about 0.6V.
In some embodiments, the driving circuit 120 transmits the driving signal S1 to the control terminal of the switching unit T1 to turn off the switching unit T1. The processing circuit 130 transmits a data signal S data At the first end of the switching unit T1, the pixel 400 does not receive the data signal S due to the switching unit T1 being turned off data 。
Reference is made to fig. 5. Fig. 5 is a schematic diagram of a pixel 500 shown according to some alternative embodiments of the present disclosure. The pixel 500 is a schematic diagram of one of the plurality of pixels in the pixel array 110 shown in fig. 1. In some embodiments, pixel 500 may represent any one pixel in pixel array 110. Pixel 500 is similar to pixel 400 in fig. 4. For simplicity, fig. 5 is explained in terms of the symbols shown in fig. 1-2, with similar elements following the symbols of fig. 4.
As shown in fig. 5, compared with the pixel 400, the control terminal and the second terminal of the switch unit T4 in the pixel 500 respectively receive the driving signal S3 and the driving signal V transmitted by the driving circuit 120 DC 。
The above-described configuration of the pixel 500 is for illustrative purposes only. Various configurations of pixels 500 are within the contemplation and scope of this disclosure.
When the pixel 500 is located in the region 110a of the pixel array 110, the pixel 500 is enabled. The driving circuit 120 transmits the driving signals S1 and S2 to the control terminals of the switch units T1 and T3, respectively, to turn on the switch units T1 and T3. The driving circuit 120 transmits the driving signal S3 to the switching unitT4 to close the switching unit T4. The processing circuit 130 transmits a data signal S data To a first end of the switching unit T1. In response to the data signal S data The pixel 500 generates an operating current I DS The switching unit T3 transmits an operating current I DS To the light emitting unit L, the light emitting unit L emits light. In other words, the light emitting unit L responds to the data signal S data And (5) emitting light.
When pixel 500 is located in region 110b of pixel array 110, pixel 500 is disabled. The driving circuit 120 transmits a driving signal S3 to the control terminal of the switch unit T4 to turn on the switch unit T4, and transmits a driving signal V DC To a second terminal of the switching unit T4. In response to the driving signal S3 and the driving signal V DC The switching unit T4 is turned on and outputs the operating voltage V ANO At the first end of the switching unit T4, the light emitting unit L is disabled.
In some embodiments, when the pixel 500 in the region 110b of the pixel array 110 has a voltage on the anode of the light emitting unit L not greater than the sum of the supply voltage VOSS and the threshold voltage Vth, the switch unit L does not emit light. That is, when the switching unit T4 outputs the operating voltage V on the anode of the light emitting unit L ANO When the voltage is not greater than the sum of the supply voltage VOSS and the threshold voltage Vth, the switching unit L does not emit light.
In some embodiments, the driving circuit 120 transmits the driving signal S1 to the control terminal of the switching unit T1 to turn off the switching unit T1. The processing circuit 130 transmits a data signal S data To the first end of the switching unit T1, the pixel 500 does not receive the data signal S because the switching unit T1 is turned off data 。
Refer to fig. 6. Fig. 6 is a schematic diagram of a pixel array 610 shown according to some embodiments of the present disclosure. The pixel array 610 includes a plurality of pixels 300 shown in fig. 3. As shown in fig. 6, the pixel array 610 is arranged in an n×2 matrix. In some embodiments, pixel array 610 is part of pixel array 110 shown in fig. 1. For simplicity, fig. 6 is explained in terms of the symbols shown in fig. 1-3, with like elements following the symbols of fig. 1-3, and the description of pixel 300 is not repeated here.
As shown in fig. 6, the pixel array 610 includes N columns, and the pixels 300 on each column are coupled to the switching device SWH. The switching device SWH is coupled between the power supply circuit 150 and the pixel array 610. More specifically, the switching device SWH is coupled between the switching element T2 and the first end of the capacitor C and the power supply circuit 150. In some embodiments, the switch device SWH is configured to control whether the supply voltage OVDD is transmitted to the corresponding pixel 300 according to the power enable control signal PEN 1.
In some embodiments, when the region 110a of the pixel array 110 includes columns 1 to 3 of the pixel array 610, the switching devices SWH corresponding to columns 1 to 3 of the pixel array 610 transmit the supply voltage OVDD to columns 1 to 3 of the pixel array 610 according to the power enable control signal PEN 1. The pixels 300 in columns 1 through 3 of the pixel array 610 are thus enabled to cause the light emitting units L in the pixels 300 to respond to the data signal S data And (5) emitting light.
In some embodiments, when the region 110a of the pixel array 110 includes columns 1 to 3 in the pixel array 610, the region 110b of the pixel array 110 includes columns 4 to N in the pixel array 610. The switching devices SWH corresponding to the 4 th to nth columns of the pixel array 610 stop transmitting the supply voltage OVDD to the 4 th to nth columns of the pixel array 610 according to the power enable control signal PEN 1. The pixels 300 in columns 4 through N of the pixel array 610 are thus disabled so that the light emitting cells L in the pixels 300 do not respond to the data signal S data And executing the operation. In some embodiments, the driving circuit 120 transmits the driving signal S1 to the control terminal of the switching unit T1 to turn off the switching unit T1. The processing circuit 130 transmits a data signal S data At the first end of the switching unit T1, the pixels 300 in the 4 th column to the N th column of the pixel array 610 do not receive the data signal S due to the switching unit T1 being turned off data 。
Refer to fig. 7. Fig. 7 is a schematic diagram of a pixel array 710 shown in accordance with some embodiments of the present disclosure. The pixel array 710 includes a plurality of pixels 300 shown in fig. 3. As shown in fig. 7, the pixel array 710 is arranged in an n×2 matrix. In some embodiments, pixel array 710 is part of pixel array 110 shown in fig. 1. For simplicity, fig. 7 is explained in terms of the symbols shown in fig. 1-3, with like elements following the symbols of fig. 1-3, and the description of pixel 300 is not repeated here.
As shown in fig. 7, the pixel array 710 includes N columns, and the pixel 300 on each column is coupled to the switching device SWL. The switch device SWL is coupled between the power supply circuit 150 and the pixel array 710. More precisely, the switching device SWL is coupled between the cathode of the light emitting unit L and the power supply circuit 150. In some embodiments, the switch device SWL is configured to control whether the supply voltage OVSS is transmitted to the corresponding pixel 300 according to the power enable control signal PEN 2.
In some embodiments, when the region 110a of the pixel array 110 includes the 4 th to 7 th columns of the pixel array 710, the switching devices SWL corresponding to the 4 th to 7 th columns of the pixel array 710 transmit the supply voltage OVSS to the 4 th to 7 th columns of the pixel array 710 according to the power enable control signal PEN 2. The pixels 300 in columns 4-7 of the pixel array 710 are thus enabled to cause the light emitting units L in the pixels 300 to respond to the data signal S data And (5) emitting light.
In some embodiments, when the region 110a of the pixel array 110 includes the 4 th to 7 th columns of the pixel array 710, the region 110b of the pixel array 110 includes the 1 st to 3 rd columns and the 8 th to N th columns of the pixel array 710. The switching devices SWL corresponding to the 1 st to 3 rd and 8 th to nth rows of the pixel array 710 stop transmitting the supply voltage OVSS to the cathodes of the light emitting units L in the 1 st to 3 rd and 8 th to nth rows of the pixel array 710 according to the power enable control signal PEN 2. The pixels 300 in columns 1 through 3 and columns 8 through N of the pixel array 710 are thus disabled such that the light emitting units L in the pixels 300 do not respond to the data signal S data And executing the operation. In some embodiments, the driving circuit 120 transmits the driving signal S1 to the control terminal of the switching unit T1 to turn off the switching unit T1. The processing circuit 130 transmits a data signal S data At the first end of the switching unit T1, the pixels 300 in the 1 st column to the 3 rd column and the 8 th column to the N th column of the pixel array 710 do not receive the data signal S due to the switching unit T1 being turned off data 。
Refer to fig. 8. Fig. 8 is a flow chart illustrating a portion of a display driving method 800 operating in the display system 100 of fig. 1, according to some embodiments of the present disclosure. As shown in fig. 8, the partial display driving method 800 includes operations S810 and S820. For clarity, fig. 8 is discussed with reference to fig. 1-7 and is described in terms of the symbols of fig. 1-7.
In operation S810, in a frame F, the region 110a of the pixel array 110 is driven to display a portion corresponding to the image in the region 110a. The driving circuit 120 transmits the driving signal S1 and the driving signal S2 to the region 110a to enable the region 110a, and the processing circuit 130 transmits the data signal S data To the area 110a, the area 110a thereby responds to the data signal S data To display a corresponding portion of the image.
In operation S820, in the frame F, the region 110b in the pixel array 110 is disabled.
In some embodiments, taking fig. 3 as an example, in operation S820, the driving circuit 120 transmits a driving signal S2 to the control terminal of the switching unit T3 in the pixel 300 in the region 110b to turn off the switching unit T3. In response to the driving signal S2, the pixel 300 reduces the operating current I DS To disable the light emitting unit L in the pixel 300.
In some other embodiments, taking fig. 4 as an example, in operation S820, the driving circuit 120 transmits the driving signal S3 to the control terminal and the second terminal of the switching unit T4 in the pixel 400 in the region 110b. The first terminal of the switching unit T4 outputs an operating voltage V in response to the driving signal S3 ANO To the anode of the light emitting unit L to disable the light emitting unit L.
In some alternative embodiments, taking fig. 5 as an example, in operation S820, the driving circuit 120 transmits the driving signal S3 to the control terminal of the switching unit T4 in the pixel 500 in the region 110b, and transmits the driving signal V DC To a second terminal of the switching unit T4. In response to the driving signal S3 and the driving signal V DC The first end of the switch unit T4 outputs an operating voltage V ANO To the anode of the light emitting unit L to disable the light emitting unit L.
In some further embodiments, taking fig. 6 as an example, in operation S820, the switching device SWH stops transmitting the supply voltage OVDD to the region 110b according to the power enable control signal PEN1 to disable the region 110b.
In various embodiments, taking fig. 7 as an example, in operation S820, the switching device SWL stops transmitting the supply voltage OVSS to the cathode of the light emitting unit L of the pixel 300 in the region 110b according to the power enable control signal PEN2 to disable the region 110b.
In some embodiments, the driving circuit 120 disables the control terminal of the switching unit T1 of the pixel 300, the pixel 400, and/or the pixel 500 that transmits the driving signal S1 to the region 110b. In response to the driving signal S1, the switching unit T1 is turned off to stop receiving the data signal S data 。
The description of the partial display driving method 800 above includes exemplary operations, but the operations of the partial display driving method 800 need not be performed in the order shown. The order of the operations of the partial display driving method 800 may be altered or the operations may be performed concurrently, with partial concurrence, repeated or omitted where appropriate and are within the spirit and scope of the embodiments of the present disclosure.
Although the embodiments of the present disclosure have been described above, it should be understood that the present disclosure is not limited thereto, and that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the embodiments of the present disclosure, and the scope of the embodiments of the present disclosure is defined by the appended claims.
Claims (10)
1. A partial display driving method comprising:
driving a first region of a pixel array in a frame to display a first portion of an image in the first region; and
in the frame, disabling a second region of the pixel array such that the second region is not displayed,
the first region comprising a succession of columns of pixels, the first region being 1/n (n being greater than 1) of the entire array of pixels,
the frame comprises a plurality of subframes, and the image displayed in the frame by the pixel array displays a plurality of different parts of the image in a plurality of first areas respectively in the subframes.
2. The partial display driving method of claim 1, wherein driving the first region of the pixel array comprises:
enabling the first region of the pixel array through a driving circuit; and
transmitting a data signal to the first region of the pixel array through a processing circuit,
wherein the first region of the pixel array is responsive to the data signal to display the first portion of the image.
3. The method of claim 1, wherein the pixel array comprises a plurality of pixels, each of the pixels comprises a switching unit and a light emitting unit,
wherein disabling the second region of the pixel array comprises:
transmitting a driving signal to a control end of the switch unit of each of the pixels in the second region of the pixel array through a driving circuit; and
in response to the driving signal, an operating current is reduced to disable the light emitting unit corresponding to each of the pixels,
the switch unit is coupled to the light-emitting unit for transmitting the operation current to the light-emitting unit.
4. The method of claim 1, wherein the pixel array comprises a plurality of pixels, each of the pixels comprises a switching unit and a light emitting unit,
wherein disabling the second region of the pixel array comprises:
transmitting a first driving signal to a control end of the switch unit of each of the pixels in the second region of the pixel array through a driving circuit; and
outputting an operating voltage to an anode of the light emitting unit through a first end of the switch unit in response to the first driving signal to disable the light emitting unit,
wherein a cathode of the light emitting unit is used for receiving a supply voltage, and the operation voltage is not greater than the sum of the supply voltage and a threshold voltage of the light emitting unit.
5. The method of claim 4, wherein a second terminal of the switch unit of each of the pixels in the second region of the pixel array is electrically coupled to the control terminal.
6. The partial display driving method of claim 4, wherein disabling the second region of the pixel array further comprises:
a second driving signal is transmitted to a second end of the switch unit of each of the pixels in the second area of the pixel array through the driving circuit.
7. The partial display driving method according to claim 1, wherein disabling the second region of the pixel array comprises:
and stopping transmitting a supply voltage to the second region of the pixel array through a switching device.
8. The partial display driving method according to claim 1, wherein disabling the second region of the pixel array comprises:
and stopping transmitting a supply voltage to a cathode of a light emitting unit of each of a plurality of pixels of the second region of the pixel array by a switching device.
9. The method of claim 1, wherein the pixel array comprises a plurality of pixels, each of the pixels comprises a switching unit and a light emitting unit,
wherein disabling the second region of the pixel array comprises:
transmitting a driving signal to a control end of the switch unit of each of the pixels in the second region of the pixel array through a driving circuit; and
and stopping receiving a data signal by the switch unit in response to the driving signal, wherein the data signal is provided by a processing circuit.
10. The partial display driving method of claim 1, wherein the second region of the pixel array does not emit light in the frame.
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| TW109105348A TWI723780B (en) | 2020-02-19 | 2020-02-19 | Driving method for partial displaying |
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| JP3688574B2 (en) * | 1999-10-08 | 2005-08-31 | シャープ株式会社 | Liquid crystal display device and light source device |
| KR100599657B1 (en) * | 2005-01-05 | 2006-07-12 | 삼성에스디아이 주식회사 | Display device and driving method thereof |
| JP5176522B2 (en) * | 2007-12-13 | 2013-04-03 | ソニー株式会社 | Self-luminous display device and driving method thereof |
| JP2010054989A (en) * | 2008-08-29 | 2010-03-11 | Mitsubishi Electric Corp | Gradation control method and display device |
| US8681185B2 (en) * | 2009-03-05 | 2014-03-25 | Ostendo Technologies, Inc. | Multi-pixel addressing method for video display drivers |
| US9715845B2 (en) * | 2009-09-16 | 2017-07-25 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor display device |
| KR101329972B1 (en) * | 2010-07-09 | 2013-11-13 | 엘지디스플레이 주식회사 | Method and apparatus for driving local dimming of liquid crystal display device |
| TWI462075B (en) * | 2012-01-20 | 2014-11-21 | Hung Ta Liu | A driving method and a display structure using the driving method |
| JP5939076B2 (en) * | 2012-07-31 | 2016-06-22 | ソニー株式会社 | Display device, driving circuit, driving method, and electronic apparatus |
| KR102072201B1 (en) * | 2013-06-28 | 2020-02-03 | 삼성디스플레이 주식회사 | Organic light emitting display device and driving method thereof |
| CN106531077A (en) * | 2016-10-19 | 2017-03-22 | 友达光电（昆山）有限公司 | Pixel structure and driving method thereof |
| CN107808651A (en) * | 2017-11-15 | 2018-03-16 | 武汉天马微电子有限公司 | A kind of display panel and display device |
| CN108399895B (en) * | 2018-05-31 | 2024-02-13 | 京东方科技集团股份有限公司 | Display panel, driving method thereof and display device |
| CN110288942B (en) * | 2019-06-28 | 2020-12-29 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
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| TW202133135A (en) | 2021-09-01 |
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