CN103117048A - Liquid crystal display (LCD) static blank screen recovering method and device - Google Patents
Liquid crystal display (LCD) static blank screen recovering method and device Download PDFInfo
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Abstract
The invention discloses a liquid crystal display (LCD) static blank screen recovering method, a device and a system. The method comprises that a main machine receives interrupt signals sent from a LCD. The interrupt signals are sent when LCD detects a blank screen of a LCD screen. The main machine judges whether the LCD enters into a normal sleep mode or not. When the judgment is that the LCD enters into the normal sleep mode, the LCD is not handled in initialization; when the LCD does not enter into the normal sleep mode, the blank screen of the LCD screen is caused by static electricity, and the LCD is handled in initialization by the main machine. The LCD static blank screen recovering method, the device and the system can be used for greatly saving system resources and improving treatment efficiency.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of LCDs (LCD, LiquidCrystal Display) static (Electro-Static discharge) blank screen restoration methods and device.
Background technology
Present electronic equipment for consumption especially mobile phone development to the smart mobile phone stage, thickness is more and more thinner, it is large that screen size becomes gradually, all adopt a kind of dynamic backlight to control (Content Adaptive Brightness Control therefore be used for the LCD screen major part of displaying contents, CABC) technology is with the relation of balance Showing Effectiveness On Screen and electric weight power consumption.Yet the reducing of electronic equipment thickness can increase simultaneously the LCD screen and cause the risk of soft failure due to electrostatic problem, and the blank screen phenomenon that soft failure causes affects the user and experiences very much.
show problem for the static of evading LCD at present, usually adopt the method for training in rotation to go to read the value of the register of LCD control chip, if parameter correctly continue the brush screen, if parameter error reinitialize LCD and drive chip, perhaps again brush the register of LCD, this kind mode must main frame removes to read or brush the register of LCD always, relatively expend the resource of system, cause the waste of system resource, the fluency aspect can be influential, and host process is very busy the time, due to this moment main frame also need to read the parameter of LCD and when can't brush screen, meeting and then cause the sudden strain of a muscle screen problem of LCD, affecting equally the user experiences, in addition, what the static instantaneous pressure caused is that LCD drives chip soft failure thoroughly, even if also can't allow its normal show with the method that refreshes register this moment, must re-power initialization LCD driving chip and just can allow its recovery normally show, and the action that adds initialization LCD to drive chip in above-mentioned wheel method for training also can allow LCD constantly produce the problem of shielding sudden strain of a muscle.
Summary of the invention
The embodiment of the present invention provides a kind of LCD static blank screen restoration methods and device, can greatly save system resource and improve treatment effeciency.
Concrete, a kind of LCDs LCD static blank screen restoration methods that the embodiment of the present invention provides comprises:
The look-at-me that main frame receiving liquid crystal display screen LCD sends, described look-at-me is to send when described LCD detects the screen blank screen of described LCD;
Described main frame judges whether described LCD enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization process, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.
Accordingly, the another kind of LCDs LCD static blank screen restoration methods that the embodiment of the present invention provides comprises:
When LCDs LCD detects the screen blank screen of described LCD, send look-at-me to main frame;
So that judging described LCD, described main frame whether enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.
Accordingly, a kind of main frame that the embodiment of the present invention provides comprises:
Receiver module is used for the look-at-me that receiving liquid crystal display screen LCD sends, and described look-at-me is to send when described LCD detects the screen blank screen of described LCD;
The first judge module is used for judging whether described LCD enters normal sleep pattern;
The initialization process module is used for, determining that the screen blank screen of described LCD is caused by static, and described LCD being carried out initialization process when the determination result is NO when described the first judge module.
Accordingly, a kind of LCDs LCD that the embodiment of the present invention provides, comprise, screen, LCD backlight, LCD drive chip, the LCD backlight drives chip, it is characterized in that, also comprise:
Interrupt circuit, for detection of the screen of described LCDs LCD blank screen whether, and when the screen blank screen of described LCDs LCD being detected, send look-at-me to main frame, whether enter normal sleep pattern so that described main frame judges described LCD, if the judgment is Yes, described LCD is not carried out initialization, if the judgment is No, determine that described LCD blank screen is caused by static, described main frame carries out initialization process to described LCD.
Accordingly, the embodiment of the present invention also provides a kind of LCDs LCD system, and it can comprise the described main frame of the embodiment of the present invention and the described LCDs of the embodiment of the present invention.
In sum, in the embodiment of the present invention, when main frame received the look-at-me of LCDs LCD transmission, described look-at-me was to send when described LCD detects the screen blank screen of described LCD; Judge whether described LCD enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization process, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.Thus, the embodiment of the present invention just can realize the recovery of static blank screen by the blank screen judgement of look-at-me and main frame, can greatly save system resource and improve treatment effeciency.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, the below will do simple the introduction to the accompanying drawing of required use in embodiment, apparently, accompanying drawing in the following describes is some embodiment of the embodiment of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of an embodiment of LCD static blank screen restoration methods provided by the invention;
Fig. 2 is the schematic flow sheet of another embodiment of LCD static blank screen restoration methods provided by the invention;
Fig. 3 is that an example structure of liquid crystal display systems of the present invention forms schematic diagram;
Fig. 4 is that the example structure of LCDs LCD of the present invention forms schematic diagram;
Fig. 5 is that the structure of an embodiment of main frame of the present invention forms schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is removed, intactly described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Below in conjunction with the drawings and the specific embodiments, the technical scheme of the embodiment of the present invention is elaborated.
As shown in Figure 1, the flow process of an embodiment of LCD static blank screen restoration methods provided by the invention can comprise the following steps:
Step S110, the look-at-me that main frame receiving liquid crystal display screen LCD sends, described look-at-me is to send when described LCD detects the screen blank screen of described LCD.In specific implementation, the screen blank screen of LCD may have two kinds of reasons, and one, LCD enter normal sleep pattern and the blank screen that causes, its two, drive because static causes LCD the LCD blank screen that lost efficacy and cause.
Step S111, described main frame judge whether described LCD enters normal sleep pattern, if the judgment is Yes, and execution in step S122, if the judgment is No, execution in step S112.
Step S112 determines that the screen blank screen of described LCD is caused by static, and described main frame carries out initialization process to described LCD.
Step S122 does not carry out initialization process to described LCD.
In specific implementation, the look-at-me in the embodiment of the present invention can be voltage and is the low level signal of " 0 ".Certainly the look-at-me of the embodiment of the present invention also can be other level or current signals of definition arbitrarily.
In specific implementation, the voltage of LCD backlight that described LCD detected as LCDs LCD can determine to detect the screen blank screen of described LCDs LCD when " 0 ", and sending voltage to main frame is that the low level signal of " 0 " is as look-at-me.
In specific implementation, when needs LCD enters normal park mode, main frame can arrange time or the instruction of dormancy, and time or the instruction LCD that ought reach setting just can enter normal sleep pattern.In specific implementation, main frame is only when causing the LCD blank screen due to static in definite look-at-me, and ability is carried out initialization process to LCD, when the look-at-me of LCD is normally to carry out the sleep pattern and when causing, main frame does not need LCD is carried out initialization process by LCD.Therefore, by the LCD sleep pattern of preserving in judging main frame, data are set at step S112 main frame and judge whether LCD enters normal sleep pattern.Such as, judge whether it is the time point that enters sleep pattern that reaches the main frame setting, perhaps, be that main frame has sent the instruction that LCD enters sleep pattern.
In specific implementation, may exist main frame to LCD carry out the initialization process failure situation (such as, because the fault of crystal oscillator chip causes the initialization failure, perhaps, because time-delay causes the initialization failure not), this moment, can repeat described LCD is carried out initialization process at the described main frame of step S212.Generally, the multiplicity that repeats described LCD is carried out initialization process when described main frame surpasses 3 times, and described main frame stops described LCD is carried out initialization process, and returns to master routine.
When the embodiment of the present invention static blank screen phenomenon occurs as LCDs LCD, send look-at-me to main frame by LCDs LCD interrupt circuit, by main frame, described LCD is carried out initialization process thus.It can solve the LCD blank screen phenomenon that is caused by static effectively, and solve the problem that LCD dodges screen, and the embodiment of the present invention is by the blank screen judgement of look-at-me and main frame, just can realize the recovery of static blank screen, can greatly save system resource and improve treatment effeciency.
Above embodiment enumerates is the method how main frame recovers LCDs LCD static blank screen, and the below is illustrated from the further LCDs LCD static blank screen restoration methods of the present invention of LCDs side.
As shown in Figure 2, another embodiment of LCD static blank screen restoration methods provided by the invention can comprise the following steps:
Step S210 when LCDs LCD detects the screen blank screen of described LCD, sends look-at-me to main frame; So that judging described LCD, described main frame whether enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.
In specific implementation, the look-at-me in the embodiment of the present invention can be voltage and is the low level signal of " 0 ".Certainly the look-at-me of the embodiment of the present invention also can be other level or current signals of definition arbitrarily.
In specific implementation, at step S210, the voltage of LCD backlight that described LCD detected as LCDs LCD can determine to detect the screen blank screen of described LCDs LCD when " 0 ", and sending voltage to main frame is that the low level signal of " 0 " is as look-at-me.
In specific implementation, when needs LCD enters normal park mode, main frame can arrange time or the instruction of dormancy, and time or the instruction LCD that ought reach setting just can enter normal sleep pattern.In specific implementation, main frame is only when causing the LCD blank screen due to static in definite look-at-me, and ability is carried out initialization process to LCD, when the look-at-me of LCD is normally to carry out the sleep pattern and when causing, main frame does not need LCD is carried out initialization process by LCD.Therefore, main frame is by judging that the LCD sleep pattern of preserving in main frame arranges data and judges whether LCD enters normal sleep pattern.Such as, judge whether it is the time point that enters sleep pattern that reaches the main frame setting, perhaps, be that main frame has sent the instruction that LCD enters sleep pattern.
In specific implementation, may exist main frame to LCD carry out the initialization process failure situation (such as, because the fault of crystal oscillator chip causes the initialization failure, perhaps, because time-delay causes the initialization failure not), this moment, can repeat described LCD is carried out initialization process at the described main frame of step S212.Generally, the multiplicity that repeats described LCD is carried out initialization process when described main frame surpasses 3 times, and described main frame stops described LCD is carried out initialization process, and returns to master routine.
When the embodiment of the present invention static blank screen phenomenon occurs as LCDs LCD, send look-at-me to main frame by LCDs LCD interrupt circuit, by main frame, described LCD is carried out initialization process thus.It can solve the LCD blank screen phenomenon that is caused by static effectively, and solve the problem that LCD dodges screen, and the embodiment of the present invention is by the blank screen judgement of look-at-me and main frame, just can realize the recovery of static blank screen, can greatly save system resource and improve treatment effeciency.
Accordingly, the embodiment of the present invention also provides main frame and the LCDs LCD that is used for implementing above-mentioned each embodiment of the method, and described main frame and LCDs LCD form liquid crystal display systems, as shown in Figure 3, liquid crystal display systems of the present invention can comprise LCDs LCD31 and main frame 32, wherein:
LCDs LCD31 for detection of the screen of described LCDs LCD blank screen whether, and when the screen blank screen of described LCDs LCD being detected, sends look-at-me to main frame;
Concrete, as shown in Figure 4, the LCDs LCD31 of the embodiment of the present invention can comprise LCDs LCD main part 311 and interrupt circuit 312, wherein:
Concrete, LCDs LCD main part 311 can comprise the screen (not shown) that LCD drives chip 3111, LCD backlight driving chip 3112, backlight (being LED lamp string LED1......LED8 in Fig. 4) and is positioned at the backlight front.
Backlight drives chip 3112, be used for sending drive signal to LED lamp string with dynamic support lcd screen demonstration work.Due to, be subjected to LCD to drive support and the control of chip 3111, backlight drives electric current that chip 3112 flows out can be to LCD lamp string and be connected to look-at-me output pin 3121 that backlight drives the high level signal end of chip 3112 and produce and break up and damage.
Look-at-me output pin 3121 is connected with main frame, is used for sending look-at-me.Wherein, precision resister (R1, R2) is external with the backlight driving chip 3112 of LCDs LCD, consists of bleeder circuit backlight, and filter capacitor C1 and look-at-me output pin 3121 are connected to the common pin place of resistance R 1 and R2 jointly.
In specific implementation, precision resister R1, R2 series connection divide to extrude the voltage that equates with main frame look-at-me output pin 3121 level, filter capacitor C1 ground connection in LCD backlight positive polarity.Wherein, the filtering backlight that is chosen for of filter capacitor value drives the high frequency interference that chip operation produces, and signal occurs when Low level effective look-at-me output pin 53.In specific implementation, described interrupt circuit 312 can be integrated in the backlight position of described LCDs LCD, and perhaps described interrupt circuit 312 backlight that also can be integrated in described LCDs LCD drives in the motherboard at chip place.
In concrete enforcement, when driving chip 311, LCD normally controls backlight driving chip 312, when backlight driving chip 312 is also normally supported the work of LCD backlight group, LCD backlight group is illuminating state, the middle fracture of main frame connection is all high level, under normal operating conditions, look-at-me output pin 53 can not produce look-at-me because low level occurring; When LCD driving chip 311 stops controlling the signal that sends backlight driving chip 52, control backlight driving chip 312 output currents block LCD backlight group cathode voltage and become 0, the look-at-me output pin 3121 that is connected to the dividing potential drop mouth can become low level 0, produces look-at-me and sends to main frame.After main frame receives this look-at-me, judge whether described LCD normally enters sleep state, if not, determine that LCD drives chip 311 because of after static causes soft failure, host-initiated initialization LCD program, after this initialization LCD program is moved successfully, LCD driving chip 311 can come into force again, and enters normal operating conditions; Main frame judgement LCD has normally entered sleep state, can not start initialization LCD program.
Further as shown in Figure 5, an embodiment of the main frame 32 of the embodiment of the present invention can comprise receiver module 321 first judge modules 322 and initialization process module 323, wherein:
The first judge module 322 is used for judging whether described LCD enters normal sleep pattern;
In specific implementation, the screen blank screen of LCD may have two kinds of reasons, and one, LCD enter normal sleep pattern and the blank screen that causes, its two, drive because static causes LCD the LCD blank screen that lost efficacy and cause.
In specific implementation, when needs LCD enters normal park mode, main frame can arrange time or the instruction of dormancy, and time or the instruction LCD that ought reach setting just can enter normal sleep pattern.In specific implementation, main frame is only when causing the LCD blank screen due to static in definite look-at-me, and ability is carried out initialization process to LCD, when the look-at-me of LCD is normally to carry out the sleep pattern and when causing, main frame does not need LCD is carried out initialization process by LCD.Therefore, the first judge module 322 is by judging that the LCD sleep pattern of preserving in main frame arranges data and judges whether LCD enters normal sleep pattern.Such as, judge whether it is the time point that enters sleep pattern that reaches the main frame setting, perhaps, be that main frame has sent the instruction that LCD enters sleep pattern.If the determination result is NO, determine that the screen blank screen of described LCD is caused by static, and carry out initialization process by 323 couples of described LCD of initialization process module
In specific implementation, may exist main frame to LCD carry out the initialization process failure situation (such as, because the fault of crystal oscillator chip causes the initialization failure, perhaps, because time-delay causes the initialization failure not), this moment, main frame of the present invention also can comprise in each embodiment:
The second judge module (not shown) is used for judging whether described initialization process module has successfully carried out initialization process to described LCD, and if the judgment is No, described initialization process module repeats described LCD is carried out initialization process;
Statistical module (not shown), be used for adding up the number of times that described initialization process module repeats described LCD is carried out initialization process, when counting described initialization process module, the multiplicity that described LCD carries out initialization process is surpassed 3 times, notify described initialization process module to stop described LCD is carried out initialization process.
As from the foregoing, in the embodiment of the present invention, when main frame received the look-at-me of LCDs LCD transmission, described look-at-me was to send when described LCD detects the screen blank screen of described LCD; Judge whether described LCD enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization process, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.Thus, the embodiment of the present invention just can realize the recovery of static blank screen by the blank screen judgement of look-at-me and main frame, can greatly save system resource and improve treatment effeciency
The step order of the method for the embodiment of the present invention can be adjusted according to actual needs.The module of the device of the embodiment of the present invention can be integrated and Further Division according to actual needs.The device of the embodiment of the present invention can be mobile phone, computer, portable set etc.
The module of the embodiment of the present invention or unit can be with universal integrated circuit (as central processor CPUs), or realize with special IC (ASIC).One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction complete by program, this program can be stored in a computer-readable recording medium, storage medium can comprise: flash disk, ROM (read-only memory) (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc.
Above system and the relevant device that the embodiment of the present invention is provided is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a LCDs LCD static blank screen restoration methods, is characterized in that, comprising:
The look-at-me that main frame receiving liquid crystal display screen LCD sends, described look-at-me is to send when described LCD detects the screen blank screen of described LCD;
Described main frame judges whether described LCD enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization process, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.
2. method according to claim 1, is characterized in that, when described main frame carried out the initialization process failure to described LCD, described main frame repeated described LCD is carried out initialization process.
3. method according to claim 2, is characterized in that, the multiplicity that repeats described LCD is carried out initialization process when described main frame surpasses 3 times, and described main frame stops described LCD is carried out initialization process.
4. method as described in any one in claim 1-3, is characterized in that, described look-at-me is that voltage is the low level signal of " 0 ".
5. a LCDs LCD static blank screen restoration methods, is characterized in that, comprising:
When LCDs LCD detects the screen blank screen of described LCD, send look-at-me to main frame;
So that judging described LCD, described main frame whether enters normal sleep pattern, if the judgment is Yes, described LCD is not carried out initialization, if the judgment is No, the screen blank screen of definite described LCD is caused by static, and described main frame carries out initialization process to described LCD.
6. LCDs LCD static blank screen restoration methods as claimed in claim 5, is characterized in that, and is described when LCDs LCD detects the screen blank screen of described LCD, sends look-at-me to main frame and comprises:
The voltage of LCD backlight that described LCD detected as LCDs LCD determines to detect the screen blank screen of described LCDs LCD when " 0 ", and sending voltage to main frame is that the low level signal of " 0 " is as look-at-me.
7. a main frame, is characterized in that, comprising:
Receiver module is used for the look-at-me that receiving liquid crystal display screen LCD sends, and described look-at-me is to send when described LCD detects the screen blank screen of described LCD;
The first judge module is used for judging whether described LCD enters normal sleep pattern;
The initialization process module is used for, determining that the screen blank screen of described LCD is caused by static, and described LCD being carried out initialization process when the determination result is NO when described the first judge module.
8. main frame as claimed in claim 7, is characterized in that, also comprises:
The second judge module is used for judging whether described initialization process module has successfully carried out initialization process to described LCD, if the judgment is No, indicates described initialization process module to repeat described LCD is carried out initialization process.
9. main frame as claimed in claim 8, is characterized in that, also comprises:
Statistical module, be used for adding up the number of times that described initialization process module repeats described LCD is carried out initialization process, when counting described initialization process module, the multiplicity that described LCD carries out initialization process is surpassed 3 times, notify described initialization process module to stop described LCD is carried out initialization process.
10. main frame as claimed in any one of claims 7-9, is characterized in that, described look-at-me is that voltage is the low level signal of " 0 ".
11. a LCDs LCD, comprise, screen, LCD backlight, LCD drive chip, the LCD backlight drives chip, it is characterized in that, also comprise:
Interrupt circuit, for detection of the screen of described LCDs LCD blank screen whether, and when the screen blank screen of described LCDs LCD being detected, send look-at-me to main frame, whether enter normal sleep pattern so that described main frame judges described LCD, if the judgment is Yes, described LCD is not carried out initialization, if the judgment is No, determine that described LCD blank screen is caused by static, described main frame carries out initialization process to described LCD.
12. LCDs LCD as claimed in claim 11, it is characterized in that, described interrupt circuit comprises the bleeder circuit backlight that the resistance by two series connection consists of, points of common connection place's connection of described two resistance is used for exporting described look-at-me to look-at-me output pin and the filter capacitor of described main frame, described bleeder circuit backlight one end is connected with the LCD backlight of described LCD, other end ground connection, when the level of described look-at-me output pin is " 0 ", the level of determining described LCD backlight is " 0 ", described interrupt circuit determines to detect the screen blank screen of described LCDs LCD, sending voltage to main frame is that the low level signal of " 0 " is as look-at-me.
13. LCDs LCD as described in claim 11 or 12, it is characterized in that, described interrupt circuit is arranged on the LCD backlight position of described LCDs LCD, and perhaps the described interrupt circuit backlight that is arranged on described LCDs LCD drives in the motherboard at chip place.
14. a LCDs LCD system is characterized in that, comprising: main frame as described in any one in claim 7-10 and LCDs as described in any one in claim 11-13.
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| CN104216790A (en) * | 2013-05-29 | 2014-12-17 | 联想(北京)有限公司 | Part anomaly monitoring method and electronic equipment |
| CN106060615A (en) * | 2016-05-23 | 2016-10-26 | Tcl海外电子（惠州）有限公司 | Judgment method and device for realizing screen parameter automatic matching using light sensor |
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| CN109285524A (en) * | 2018-11-30 | 2019-01-29 | 广东美的制冷设备有限公司 | Liquid crystal display and its display methods, terminal, computer readable storage medium |
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