CN110853577A - Display panel and brightness compensation method - Google Patents
Display panel and brightness compensation method Download PDFInfo
- Publication number
- CN110853577A CN110853577A CN201911184229.4A CN201911184229A CN110853577A CN 110853577 A CN110853577 A CN 110853577A CN 201911184229 A CN201911184229 A CN 201911184229A CN 110853577 A CN110853577 A CN 110853577A
- Authority
- CN
- China
- Prior art keywords
- display
- module
- attenuation
- controller
- timing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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]
-
- 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]
- G09G3/3225—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] using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The application discloses a display panel and a brightness compensation method; the display panel comprises a controller, a display screen and a timing transistor; the controller comprises a life module and an attenuation module; the display screen is connected with the controller through the control circuit and comprises a pixel transistor and a pixel unit; a timing transistor and a display screen form a display module, and the timing transistor is electrically connected with the controller through a timing circuit; the controller sends a starting instruction to the display screen and the timing transistor, when the display screen is lightened, the timing transistor is conducted with the timing circuit, the controller detects conduction information of the timing circuit and transmits the conduction information to the service life module, and the service life module conducts the information and outputs an attenuation signal; the attenuation module is configured to determine a brightness attenuation value from the attenuation signal; the pixel transistor adjusts the light emitting brightness according to the brightness attenuation value. Through the arrangement, the brightness of the display screens is adjustable, so that the brightness of the display screens is the same or similar, and the brightness uniformity of the display screens is improved.
Description
Technical Field
The present disclosure relates to the field of smart display, and more particularly, to a display panel and a brightness compensation method.
Background
With the development of science and technology, foldable display devices are more and more sought after by people, and generally comprise a main screen and an auxiliary screen, wherein when the foldable display device is in a flat state, the main screen and the auxiliary screen are simultaneously lightened, and when the foldable display device is in a folded state, only the main screen is lightened, and the auxiliary screen is extinguished. After long-term use, the main screen and the auxiliary screen are different in lighting time duration, and the main screen is used relatively frequently, namely the lighting time duration of the main screen is far longer than that of the auxiliary screen, so that the brightness attenuation of the main screen is faster relative to that of the auxiliary screen. Therefore, after long-term use, when the foldable display device is in the flat state, that is, when the main screen and the sub-screen are simultaneously lit and used for synchronous display, the brightness of the main screen and the sub-screen is obviously different, and the user experience is poor.
Disclosure of Invention
The application provides a display panel and a brightness compensation method, which can improve the brightness uniformity of a plurality of display screens.
According to a first aspect of the present application, there is provided a display panel including:
a controller including a lifetime module and an attenuation module;
the display device comprises a plurality of display screens, a controller and a display screen controller, wherein the number of the display screens is multiple, the display screens are connected in parallel, each display screen is connected to the controller through a control circuit, and each display screen comprises a pixel transistor and a pixel unit;
the number of the timing transistors is multiple, one timing transistor and one display screen form a display module, each timing transistor is electrically connected to the controller through a timing circuit, and the grid electrode of the timing transistor in the display module is connected to the control circuit;
the controller is configured to send a starting instruction to the display screen and the timing transistor through the control circuit, when the controller controls the display screen in the display module to be lightened, the timing transistor is conducted, the timing circuit is conducted, the controller is further configured to detect conduction information of the timing circuit in each display module and transmit the conduction information to the service life module, and the service life module is configured to output an attenuation signal according to the conduction information of the circuit; the attenuation module is configured to determine a brightness attenuation value of the display module according to the attenuation signal; the pixel transistor is configured to adjust a light emission luminance of the pixel unit according to the luminance attenuation value.
Further, the control circuit comprises a gate driving circuit, an input end of the gate driving circuit is connected with the controller, and an output end of the gate driving circuit is connected with the pixel transistor;
the gate of the timing transistor is connected to the input terminal or the output terminal of the gate driving circuit.
Further, one of the display modules is determined to be used as a standard module, and the attenuation module is configured to determine brightness attenuation values of the display modules except the standard module according to the attenuation signal; the pixel transistors of the display module except the standard module are configured to adjust the light-emitting brightness of the pixel units according to the brightness attenuation value.
Further, the display panel comprises a comparison module, wherein the comparison module is configured to receive the attenuation signals of the display modules, compare the attenuation signals and use the display module with the maximum attenuation signal as a standard module.
Furthermore, the number of the display screens is two, the display screens are respectively a main screen and an auxiliary screen, the display module where the main screen is located is used as a standard module, and the attenuation module is configured to output the brightness attenuation value of the display module where the auxiliary screen is located according to the attenuation information of the two display modules.
Further, the turn-on information of the timing circuit is an integrated value of a current of the timing circuit;
the timing circuit is provided with a protective resistor, and the controller is configured to detect a current in the timing circuit and integrate the current.
According to a second aspect of the present application, there is provided a brightness compensation method applied to the display panel, the brightness compensation method comprising:
the controller sends a starting instruction to the display screen and the timing transistor;
the display screen receives a starting instruction and is lightened; the timing transistor receives a starting instruction and conducts a timing circuit provided with the timing transistor;
the controller detects the conduction information of the timing circuit;
inputting the conduction information into a service life module, and determining an attenuation signal;
inputting the attenuation signal into an attenuation module, and determining a brightness attenuation value of the display module;
the pixel transistor adjusts the light emitting brightness of the pixel unit according to the brightness attenuation value.
Further, the control circuit comprises a gate driving circuit, an input end of the gate driving circuit is connected with the controller, and an output end of the gate driving circuit is connected with the pixel transistor;
the step of sending a turn-on command to the display screen by the controller comprises:
the controller transmits an STV signal;
the input end of the grid driving circuit receives the STV signal and sends an EM signal through the output end according to the STV signal.
Further, the brightness compensation method further includes the steps of: determining one of the display modules as a standard module;
inputting the attenuation signal into an attenuation module, and determining the brightness attenuation value of the display module comprises the following steps: and the attenuation module determines the brightness attenuation value of the display module except the standard module according to the attenuation signal.
Further, the step of the controller detecting the conduction information of the timing circuit includes:
the controller detects the current in the timing circuit;
the controller integrates the current.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the above arrangement, when the display screen is lighted, the timing transistor is turned on, and the timing circuit is turned on, so that the corresponding situation that the display screen is lighted can be determined according to the turn-on information of the timing circuit; the controller obtains a brightness attenuation value according to the conduction information of the timing circuit, and the pixel transistor can control the brightness of the pixel unit of the corresponding display screen according to the brightness attenuation value so as to enable the brightness of the plurality of display screens to be adjustable; the controller can control the brightness of each display screen when being lightened according to the lightened condition of the display screens, so that the brightness of the display screens is the same or similar when being lightened simultaneously, and the brightness uniformity of the display screens is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a display screen according to an embodiment of the present application.
Fig. 3 is another schematic structural diagram of a display screen according to an embodiment of the present application.
Fig. 4 is a simplified flowchart illustrating a brightness compensation method according to an embodiment of the present application.
Description of the reference numerals
Sub-screen 202
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
The present invention relates to a display panel, which can be applied to a display device, particularly an OLED display device. The display device can be applied to electronic devices such as mobile phones, computers, flat panels, electronic books and the like.
As shown in fig. 1 to 3, the display panel 10 includes a controller 100, a display screen 200, and a timing transistor 300.
As shown in FIG. 1, the controller 100 includes a lifetime module and an attenuation module. The number of the display panels is plural, the display panels are connected in parallel, each display panel is connected to the controller 100 through the control circuit 210, and each display panel includes a pixel transistor 220 and a pixel unit (not shown). The number of the timing transistors 300 is plural, one timing transistor 300 and one display screen form the display module 230, each timing transistor 300 is electrically connected to the controller 100 through the timing circuit 240, and the gate of the timing transistor 300 in the display module 230 is connected to the control circuit 210.
Wherein the controller 100 is configured to send an on command or an off command to the display 200 and the timing transistor 300 through the control circuit 210. When the controller 100 sends a start command to control the display panel 200 in the display module 230 to light up, the timing transistor 300 is turned on, and the timing circuit 240 is turned on. The controller 100 is further configured to detect the conduction information of the timing circuit 240 in each display module 230 and transmit the conduction information to the lifetime module, which is configured to output an attenuation signal according to the conduction information of the circuit. The attenuation module is configured to determine a brightness attenuation value of the display module from the attenuation signal. The pixel transistor 220 is configured to adjust the light emission luminance of the pixel unit according to the luminance decay value.
In the above arrangement, when the display panel 200 is lit, the timer transistor 300 is turned on, and the timer circuit 240 is turned on, so that the corresponding display panel 200 can be determined to be lit according to the on information of the timer circuit 240. The controller 100 obtains the brightness attenuation value according to the conduction information of the timing circuit 240, and the pixel transistor 220 can control the brightness of the pixel unit of the corresponding display panel 200 according to the brightness attenuation value, so that the brightness of the plurality of display panels 200 can be adjusted. The controller 100 may control the brightness of each display screen 200 when being lit according to the lit condition of the plurality of display screens 200, so that the brightness of the plurality of display screens 200 is the same or similar when the display screens 200 are lit simultaneously, thereby improving the brightness uniformity of the plurality of display screens 200.
Further, the control circuit 210 includes a gate driving circuit 211, an input terminal of the gate driving circuit 211 is connected to the controller 100, and an output terminal of the gate driving circuit 211 is connected to the pixel transistor 220. In the present embodiment, the gate of the timing transistor 300 is also connected to the output terminal of the gate driving circuit 211. The controller 100 transmits the STV signal to the gate driving circuit 211, and the gate driving circuit 211 transfers the STV signal to the gate of the timing transistor 300. If the timing transistor 300 is a P-type thin film transistor, when the STV signal is at a low level, the timing transistor 300 is turned on and serves as a conductive element, and the timing circuit 240 is turned on; when the STV signal is high, the timing transistor 300 is an insulating element and the timing circuit 240 is turned off. If the timing transistor 300 is an N-type thin film transistor, otherwise, if the STV signal is at a high level, the timing transistor 300 is turned on and serves as a conductive element, and the timing circuit 240 is turned on; when the STV signal is low, the timing transistor 300 is an insulating element and the timing circuit 240 is turned off. The controller 100 may control the states of the timing transistor 300 and the timing circuit 240 through the STV signal. Meanwhile, the design of connecting the gate of the timing transistor 300 to the output terminal facilitates device wiring. Of course, in other embodiments, the gate of the timing transistor 300 may also be connected to the input terminal of the gate driving circuit 211.
As shown in fig. 2 and 3, and as shown in fig. 1, in the present embodiment, the number of the display screens 200 is two, and the display screens are a main screen 201 and a sub-screen 202. The control circuit 210 includes a first control circuit 212 and a second control circuit 213, the main screen 201 and the controller 100 are connected through the first control circuit 212, and the sub-screen 202 and the controller 100 are connected through the second control circuit 213. The display screen 200 is switchable between an unfolded state and a folded state. When the display screen 200 is in the unfolded state, as shown in fig. 2, the main screen 201 and the sub-screen 202 can be used for picture display at the same time, and the plane in which the main screen 201 is located coincides with the plane in which the sub-screen 202 is located. When the display screen 200 is in the folded state, as shown in fig. 3, the user can select to use only the main screen 201 or only the sub-screen 202 for screen display. In the daily use process, when the display screen 200 is in the folded state, the main screen 201 generally displays pictures, and the auxiliary screen is closed, so that the use frequency of the main screen 201 is higher than that of the auxiliary screen 202, and finally, the attenuation signal obtained by the life model corresponding to the main screen 201 is far higher than that of the auxiliary screen 202. The display module 230 where the main screen 201 is located can be used as a standard module, and the attenuation module is configured to output the brightness attenuation value of the display module 230 where the sub-screen 202 is located according to the attenuation information of the two display modules 230. In other words, the display panel 10 includes two timing transistors 300, which are a main timing transistor and a sub timing transistor, respectively, a gate of the main timing transistor is connected to the output terminal of the gate driving circuit 211 of the main screen 201, and a gate of the sub timing transistor is connected to the output terminal of the gate driving circuit 211 of the sub screen 202. The timing circuit 240 includes a main timing circuit connected to the source and drain of the main timing transistor and a sub-timing circuit connected to the source and drain of the sub-timing transistor. The controller sends a first STV signal to the main timing transistor through the first control circuit and sends a second STV signal to the sub-timing transistor through the second control circuit. The main timing transistor and the sub timing transistor switch states according to the first STV signal and the STV signal, respectively. When the service time of the main screen 201 is long, the longer the time that the main timing circuit 240 is turned on, the larger the loss of the main screen 201 and the larger the attenuation signal, and the brightness attenuation value of the sub-screen 202 can be determined according to the attenuation signals of the main screen 201 and the sub-screen 202. The gate voltage of the pixel transistor 220 in the sub-screen 202 is controlled to reduce the light emission luminance of the pixel unit, so that the luminance of the main screen 201 and the sub-screen 202 is the same. Of course, in other embodiments, the display panel 10 may also be a non-foldable structure, and in this case, the main screen 201 and the sub-screen 202 may be disposed on two opposite surfaces of the display device, two adjacent surfaces, or may be disposed on the same surface of the display device.
In the present embodiment, the main screen 201 may be directly designated as a standard module during design, and of course, the sub-screen 202 may also be used as a standard module according to the actual use situation of the user.
Of course, in other embodiments, the number of the display screens 200 may also be more than three, and the standard module may be directly determined during design, that is, one of the display modules 230 is determined as the standard module, and the attenuation module is configured to determine the brightness attenuation values of the display modules 230 except the standard module according to the attenuation signal. The pixel transistors 220 of the display module 230 other than the standard module are configured to adjust the luminance of the pixel units according to the luminance degradation value. Thereby making the brightness of other display screens 200 keep the same with the brightness of the display screen 200 of the standard module, so as to realize the same brightness of a plurality of display screens 200. Alternatively, a comparison module may be provided, and the comparison module is configured to receive the attenuation signals of the display modules 230, and is configured to compare the attenuation signals, and use the display module 230 with the largest attenuation signal as the standard module. Through the above arrangement, the standard module can be determined according to the actual use frequency of each display screen 200 by the user.
In the present embodiment, the on information of the timer circuit 240 is an integrated value of the current of the timer circuit 240. A protection resistor 250 is disposed in the timing circuit 240, and the controller 100 is configured to detect a current in the timing circuit 240 and integrate the current. In the present embodiment, the on resistance of the timing transistor 300 is 20m Ω, and the resistance of the timing transistor 300 is denoted as R1; the voltage output by the controller 100 is 5V, and the voltage output by the controller 100 is denoted as U; the resistance of the protection resistor 250 in series with the timing transistor 300 is 5k Ω, and the resistance of the protection resistor 250 is denoted as R2, according to the formula: when the timer circuit 240 is turned on, the current in the timer circuit 240 is 1mA, I/(R1 + R2). When the timing transistor 300 is turned off, its resistance is quite large and the current in the timing circuit 240 is approximately 0A. The controller 100 is able to respond to a change between 1mA and 0A, i.e., the controller 100 may integrate the detected current in the timing circuit 240 and input it into the life model to derive an attenuation signal.
Of course, in other embodiments, the conduction information may also be the conduction duration of the timing circuit 240, and a timing unit may be disposed in the controller 100 to detect the cumulative lighting time of the display screens 200 in the display modules 230, that is, the cumulative conduction time of the timing circuits, so as to obtain the attenuation signal according to the lifetime model.
As shown in fig. 4 and optionally referring to fig. 1 to 3, the present application further discloses a brightness compensation method, which is applied to the display panel, and the steps of the brightness compensation method include:
step 1000: the controller 100 sends a turn-on command to the display 200 and the timing transistor 300.
Step 2000: the display screen 200 receives the opening instruction and is lighted; the timing transistor 300 receives the turn-on command and turns on the timing circuit 240 having the timing transistor 300.
Step 3000: the controller 100 detects the on information of the timer circuit 240.
Step 4000: and inputting the conduction information into a service life module, and determining an attenuation signal.
Step 5000: and inputting the attenuation signal into an attenuation module, and determining the brightness attenuation value of the display module.
Step 6000: the pixel transistor 220 adjusts the light emitting luminance of the pixel unit according to the luminance attenuation value.
Through the arrangement, the light emitting brightness of the pixel unit of each display screen 200 can be controlled according to the service condition of the display screen 200 of each module, so that the brightness displayed by each display screen 200 is the same or similar, and the use feeling of a user is improved.
Further, the step of sending the turn-on command to the display screen 200 by the controller 100 includes:
step 1100: the controller 100 transmits the STV signal.
Step 1200: the input terminal of the gate driving circuit 211 receives the STV signal and transmits the EM signal through the output terminal according to the STV signal.
In this embodiment, the step of the controller 100 detecting the on information of the timing circuit 240 includes:
step 3100: the controller 100 detects the current in the timing circuit 240.
Step 3200: the controller 100 integrates the current.
In the above arrangement, the conduction information is obtained by detecting and integrating the current in the timing circuit 240, and the attenuation signal is obtained according to the life model, so that the detection accuracy is high and the operation is convenient. Of course, in other embodiments, the on signal may also be obtained by detecting the accumulated time period during which the timing circuit 240 is turned on.
Further, the brightness compensation method further comprises the following steps:
one of the display modules 230 is determined as a standard module.
Inputting the attenuation signal into an attenuation module, and determining the brightness attenuation value of the display module comprises the following steps: the attenuation module determines the brightness attenuation value of the display module 230 except the standard module according to the attenuation signal.
It should be noted that: in this embodiment, the display module 230 in which the main screen 201 is located can be directly identified as a standard module during design. Of course, in other embodiments, a comparison module may be provided, and the step of determining one of the display modules 230 as a standard module includes: the comparison module receives the attenuation signals of each display module 230; the comparison module compares the attenuation signals and determines the attenuation signal with the maximum value; the display module 230 with the largest attenuation signal is used as the standard module.
Through the above arrangement, the display brightness of the pixel units of the display screen 200 of the other display modules 230 except the standard module can be changed, so that the display brightness of the display screen 200 of the other display modules 230 except the standard module approaches to the display brightness of the display screen 200 of the standard module, or the display brightness of the display screen 200 of the standard module is the same, thereby improving the brightness uniformity of the plurality of display screens 200, and further improving the use feeling of users. And regard as standard module with the biggest display module assembly 230 of decay signal, the luminance of the display screen 200 of the display module assembly 230 of accessible reduction except that standard module assembly to make its luminance phase-match with the display screen 200 of standard module assembly, it is rational to operate.
Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (10)
1. A display panel, comprising:
a controller including a lifetime module and an attenuation module;
the display device comprises a plurality of display screens, a controller and a display screen controller, wherein the number of the display screens is multiple, the display screens are connected in parallel, each display screen is connected to the controller through a control circuit, and each display screen comprises a pixel transistor and a pixel unit;
the number of the timing transistors is multiple, one timing transistor and one display screen form a display module, each timing transistor is electrically connected to the controller through a timing circuit, and the grid electrode of the timing transistor in the display module is connected to the control circuit;
the controller is configured to send a starting instruction to the display screen and the timing transistor through the control circuit, when the controller controls the display screen in the display module to be lightened, the timing transistor is conducted, the timing circuit is conducted, the controller is further configured to detect conduction information of the timing circuit in each display module and transmit the conduction information to the service life module, and the service life module is configured to output an attenuation signal according to the conduction information of the circuit; the attenuation module is configured to determine a brightness attenuation value of the display module according to the attenuation signal; the pixel transistor is configured to adjust a light emission luminance of the pixel unit according to the luminance attenuation value.
2. The display panel according to claim 1, wherein the control circuit comprises a gate driving circuit, an input terminal of the gate driving circuit is connected to the controller, and an output terminal of the gate driving circuit is connected to the pixel transistor;
the gate of the timing transistor is connected to the input terminal or the output terminal of the gate driving circuit.
3. The display panel according to claim 1, wherein one of the display modules is determined as a standard module, and the attenuation module is configured to determine a brightness attenuation value of the display modules other than the standard module according to the attenuation signal; the pixel transistors of the display module except the standard module are configured to adjust the light-emitting brightness of the pixel units according to the brightness attenuation value.
4. The display panel of claim 3, wherein the display panel comprises a comparison module configured to receive the attenuation signals of each of the display modules and configured to compare the attenuation signals to determine the display module with the largest attenuation signal as a standard module.
5. The display panel according to claim 3, wherein the number of the display screens is two, namely a main screen and an auxiliary screen, and the display module where the main screen is located is used as a standard module, and the attenuation module is configured to output the brightness attenuation value of the display module where the auxiliary screen is located according to the attenuation information of the two display modules.
6. The display panel according to claim 1, wherein the on information of the timer circuit is an integrated value of a current of the timer circuit;
the timing circuit is provided with a protective resistor, and the controller is configured to detect a current in the timing circuit and integrate the current.
7. A luminance compensation method applied to the display panel according to claim 1, the luminance compensation method comprising the steps of:
the controller sends a starting instruction to the display screen and the timing transistor;
the display screen receives a starting instruction and is lightened; the timing transistor receives a starting instruction and conducts a timing circuit provided with the timing transistor;
the controller detects the conduction information of the timing circuit;
inputting the conduction information into a service life module, and determining an attenuation signal;
inputting the attenuation signal into an attenuation module, and determining a brightness attenuation value of the display module;
the pixel transistor adjusts the light emitting brightness of the pixel unit according to the brightness attenuation value.
8. The luminance compensation method as claimed in claim 7, wherein the control circuit comprises a gate driving circuit, an input terminal of the gate driving circuit is connected to the controller, and an output terminal of the gate driving circuit is connected to the pixel transistor;
the step of sending a turn-on command to the display screen by the controller comprises:
the controller transmits an STV signal;
the input end of the grid driving circuit receives the STV signal and sends an EM signal through the output end according to the STV signal.
9. The luminance compensation method as claimed in claim 7, wherein the luminance compensation method further comprises the steps of: determining one of the display modules as a standard module;
inputting the attenuation signal into an attenuation module, and determining the brightness attenuation value of the display module comprises the following steps: and the attenuation module determines the brightness attenuation value of the display module except the standard module according to the attenuation signal.
10. The luminance compensation method as claimed in claim 7, wherein the step of the controller detecting the turn-on information of the timing circuit comprises:
the controller detects the current in the timing circuit;
the controller integrates the current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184229.4A CN110853577A (en) | 2019-11-27 | 2019-11-27 | Display panel and brightness compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184229.4A CN110853577A (en) | 2019-11-27 | 2019-11-27 | Display panel and brightness compensation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110853577A true CN110853577A (en) | 2020-02-28 |
Family
ID=69605359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911184229.4A Pending CN110853577A (en) | 2019-11-27 | 2019-11-27 | Display panel and brightness compensation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110853577A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222455A (en) * | 2011-06-14 | 2011-10-19 | 云南北方奥雷德光电科技股份有限公司 | Method for assessing service life of AMOLED (active matrix/organic light emitting diode) microdisplay |
| CN102841321A (en) * | 2011-06-23 | 2012-12-26 | 海洋王照明科技股份有限公司 | Alarm control circuit and alarm tool for lamp aging test |
| CN108881635A (en) * | 2018-06-27 | 2018-11-23 | 努比亚技术有限公司 | Screen luminance adjustment method, mobile terminal and computer readable storage medium |
| JP2018197822A (en) * | 2017-05-24 | 2018-12-13 | 三井化学株式会社 | Liquid crystal device and method for manufacturing the same |
| CN109981843A (en) * | 2019-03-15 | 2019-07-05 | Oppo广东移动通信有限公司 | Screen processing method, apparatus, electronic equipment and the storage medium of electronic equipment |
| US20190259351A1 (en) * | 2018-02-21 | 2019-08-22 | Samsung Electronics Co., Ltd. | Flexible electronic device including optical sensor and method of operating same |
| CN110164398A (en) * | 2019-05-24 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of display lightness regulating method and system |
| CN110459168A (en) * | 2019-08-21 | 2019-11-15 | Oppo广东移动通信有限公司 | Driving method, driving circuit, display screen component and electronic equipment |
-
2019
- 2019-11-27 CN CN201911184229.4A patent/CN110853577A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222455A (en) * | 2011-06-14 | 2011-10-19 | 云南北方奥雷德光电科技股份有限公司 | Method for assessing service life of AMOLED (active matrix/organic light emitting diode) microdisplay |
| CN102841321A (en) * | 2011-06-23 | 2012-12-26 | 海洋王照明科技股份有限公司 | Alarm control circuit and alarm tool for lamp aging test |
| JP2018197822A (en) * | 2017-05-24 | 2018-12-13 | 三井化学株式会社 | Liquid crystal device and method for manufacturing the same |
| US20190259351A1 (en) * | 2018-02-21 | 2019-08-22 | Samsung Electronics Co., Ltd. | Flexible electronic device including optical sensor and method of operating same |
| CN108881635A (en) * | 2018-06-27 | 2018-11-23 | 努比亚技术有限公司 | Screen luminance adjustment method, mobile terminal and computer readable storage medium |
| CN109981843A (en) * | 2019-03-15 | 2019-07-05 | Oppo广东移动通信有限公司 | Screen processing method, apparatus, electronic equipment and the storage medium of electronic equipment |
| CN110164398A (en) * | 2019-05-24 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of display lightness regulating method and system |
| CN110459168A (en) * | 2019-08-21 | 2019-11-15 | Oppo广东移动通信有限公司 | Driving method, driving circuit, display screen component and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100317281B1 (en) | method for driving self-emmitting display device | |
| US20210327328A1 (en) | Display apparatus and brightness adjustment method for display apparatus | |
| JP4244110B2 (en) | LIGHT EMITTING PANEL DRIVING DEVICE AND PORTABLE TERMINAL DEVICE HAVING LIGHT EMITTING PANEL | |
| WO2018133246A1 (en) | Display module driving device and method | |
| US6222323B1 (en) | Driving method of a display device employing electro-light-emitting elements and the same display device | |
| KR100884791B1 (en) | Organic light emitting display apparatus and method of driving the apparatus | |
| CN101206826B (en) | Display device and electronic apparatus | |
| EP3016096B1 (en) | Display device, electronic appliance including the same, and external power supply device | |
| US10096287B2 (en) | Display device and method of controlling the same | |
| CN106557194B (en) | Driver IC and display equipment including the driver IC | |
| US20170193884A1 (en) | Display device and driving method and driving module | |
| CN110459168B (en) | Driving method, driving circuit, display screen assembly and electronic equipment | |
| WO2017045366A1 (en) | Self-luminous display and display method for self-luminous display | |
| KR20040066290A (en) | method for driving of self-light emitting device | |
| CN203135986U (en) | Handset with shooting function | |
| US9697797B2 (en) | Method and apparatus for displaying content | |
| TW201351387A (en) | Self-luminescent display apparatus, adaptive screen control method, and adaptive adjusting circuit | |
| CN206003478U (en) | A kind of backlight drive circuit and mobile terminal | |
| CN110853577A (en) | Display panel and brightness compensation method | |
| WO2023193606A1 (en) | Backlight brightness adjustment circuit and control method therefor, and device | |
| CN112201200A (en) | Pixel driving circuit and display device | |
| CN115798408B (en) | Pixel driving circuit and display device | |
| EP4187361A1 (en) | Touchscreen displays | |
| CN114758604B (en) | Pixel driving circuit, driving method thereof, display panel and display device | |
| CN114267290B (en) | Self-adaptive LED ghost elimination and coupling method and circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |