CN107871478B - Driving circuit and method of display module and display equipment - Google Patents
Driving circuit and method of display module and display equipment Download PDFInfo
- Publication number
- CN107871478B CN107871478B CN201711430535.2A CN201711430535A CN107871478B CN 107871478 B CN107871478 B CN 107871478B CN 201711430535 A CN201711430535 A CN 201711430535A CN 107871478 B CN107871478 B CN 107871478B
- Authority
- CN
- China
- Prior art keywords
- control signal
- light control
- signal
- backlight source
- green
- 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.)
- Active
Links
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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
Abstract
The invention discloses a drive circuit, a method and display equipment of a display module, wherein the display module comprises a red backlight source, a green backlight source and a blue backlight source, the drive circuit of the display module comprises a control circuit, a machine core interface circuit used for providing a dimming signal for the control circuit, and a logic interface circuit used for providing a field frequency signal for the control circuit; the control circuit is used for generating a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence and display the light in a color mode; the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, and the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous and are mutually separated by a time sequence of the field frequency time. The technical scheme of the invention has the characteristic of low cost.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a driving circuit and method of a display module and display equipment.
Background
At present, the principle of displaying color pictures by a liquid crystal television is as follows: firstly, making the backlight into three primary color light sources of red, green and blue; then, the three primary color lights are close to each other at the corresponding positions of the same plane; finally, a color filter film is added to mix the three primary colors of light together. Thus, when watching the lcd tv, the human eye will feel the color (i.e. color) of the mixed three primary colors, and the human eye will feel different colors due to different degrees of light emission of the three primary colors.
However, since the three primary color light sources need to emit light at the same time and the light emitting degrees are different, each primary color light source needs to be controlled independently. That is, the display module of the existing lcd tv needs at least three independent driving power supplies to drive the lcd tv to work, which is relatively high in cost.
Disclosure of Invention
The present invention provides a driving circuit of a display module, which aims to reduce the cost of the driving circuit of the display module.
In order to achieve the above object, the present invention provides a driving circuit of a display module, where the display module includes a red backlight source, a green backlight source, and a blue backlight source, the driving circuit of the display module includes a control circuit, a core interface circuit for providing a dimming signal to the control circuit, and a logic interface circuit for providing a field frequency signal to the control circuit; the control circuit is used for generating a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence and display the light in a color mode; the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
Preferably, the driving circuit of the display module further comprises a voltage boosting circuit, and the movement interface circuit is further configured to provide a voltage boosting power supply for the voltage boosting circuit; the boosting circuit is used for boosting the boosting power supply to provide driving power supplies for the red backlight source, the green backlight source and the blue backlight source; and adjusting the brightness of the red backlight source according to the red light control signal, adjusting the brightness of the green backlight source according to the green light control signal, and adjusting the brightness of the blue backlight source according to the blue light control signal.
Preferably, the control circuit includes a control chip, and the control chip includes: the light modulation device comprises a light modulation signal pin used for inputting the light modulation signal, a field frequency signal pin used for inputting the field frequency signal, a red light control pin used for outputting the red light control signal, a green light control pin used for outputting the green light control signal and a blue light control pin used for outputting the blue light control signal.
Preferably, the movement interface circuit is further configured to provide an enable signal for the control circuit, and the control circuit triggers activation when receiving the enable signal.
Correspondingly, the invention also provides a driving method of the display module, the display module comprises a red backlight source, a green backlight source and a blue backlight source, and the driving method of the display module comprises the following steps:
acquiring a dimming signal and a field frequency signal;
generating a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence and display the light in a color manner;
the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
Preferably, the step of obtaining the dimming signal and the field frequency signal comprises:
detecting whether an enable signal is input;
if yes, acquiring a dimming signal and a field frequency signal;
if not, whether an enabling signal is input or not is continuously detected.
Correspondingly, the invention also provides display equipment which comprises the driving circuit of the display module.
Preferably, the display device is a television.
The technical scheme of the invention is as follows: the control circuit generates a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputs the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control a red backlight source, a green backlight source and a blue backlight source in the display module to emit light according to the preset sequence and display the light in a color mode. Because the three primary color light sources in the technical scheme emit light according to the preset sequence without emitting light at the same moment, the color display of the display module is realized by adopting one driving power supply, and therefore, the cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of a driving circuit of a display module according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of a driving circuit of a display module according to another embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a driving circuit of a display module according to another embodiment of the present invention;
FIG. 4 is a timing diagram illustrating waveforms of a field frequency signal, a dimming signal, a red control signal, a green control signal, and a blue control signal according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a driving method of a display module according to an embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the descriptions relating to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a driving circuit of a display module.
Referring to fig. 1, in an embodiment of the present invention, the display module includes a red backlight, a green backlight, and a blue backlight, and the driving circuit of the display module includes a core interface circuit 10, a logic interface circuit 20, and a control circuit 30.
In this embodiment, the core interface circuit 10 is configured to provide a dimming signal for the control circuit 30, the logic interface circuit 20 is configured to provide a field frequency signal for the control circuit 30, and the control circuit 30 is configured to generate a red light control signal, a green light control signal, and a blue light control signal according to the dimming signal and the field frequency signal, and output the red light control signal, the green light control signal, and the blue light control signal to the display module according to a preset sequence, so as to control the red backlight source, the green backlight source, and the blue backlight source in the display module to.
Here, the emission color of the red backlight is red, the emission color of the green backlight is green, and the emission color of the blue backlight is blue. It is understood that when the red, green, and blue backlights are illuminated for a short enough interval, colored light is observed by the human eye. That is, when the output interval time of the red control signal, the green control signal, and the blue control signal is sufficiently short, the human eye observes colored light. Therefore, in an embodiment, the interval time between the output of the red light control signal, the output of the green light control signal and the output of the blue light control signal can be set at will as long as the human eyes can observe the colored light.
In order to optimize the display effect of the display module and make the color displayed by the display module more uniform, in another embodiment, the red light control signal, the green light control signal and the blue light control signal are kept synchronous and are spaced at the same time sequence. Preferably, the red light control signal, the green light control signal and the blue light control signal are respectively synchronized with the field frequency signal, and the red light control signal, the green light control signal and the blue light control signal are separated from each other by a time sequence of the field frequency time.
Specifically, as shown in fig. 4, in the first period of the field frequency signal, the control circuit 30 generates the dimming signal as a red light control signal, and outputs the red light control signal to the display module to control the red backlight to emit light. After the interval of one period of the field frequency signal, that is, in the second period of the field frequency signal, the control circuit 30 generates the dimming signal as a green light control signal and outputs the green light control signal to the display module, so that the green backlight emits light. After the interval of one period of the field frequency signal, that is, in the third period of the field frequency signal, the control circuit 30 generates the dimming signal as a blue light control signal, and outputs the blue light control signal to the display module to control the blue backlight to emit light. Thus, the red light emitted by the red backlight source, the green light emitted by the green backlight source and the blue light emitted by the blue backlight source are mixed to present colored light, that is, the colored light is observed by human eyes.
Thereafter, the above process is repeated.
The technical scheme of the invention is as follows: the control circuit 30 generates a red light control signal, a green light control signal, and a blue light control signal according to the dimming signal and the field frequency signal, and outputs the red light control signal, the green light control signal, and the blue light control signal to the display module according to a preset sequence, so as to control the red backlight, the green backlight, and the blue backlight in the display module to emit light according to the preset sequence, and display the light in a color. Because the three primary color light sources in the technical scheme emit light according to the preset sequence without emitting light at the same moment, the color display of the display module is realized by adopting one driving power supply, and therefore, the cost is lower.
It should be noted that, in an embodiment, the control circuit 30 includes a control chip U1, and the control chip U1 includes a dimming signal pin PDIM for inputting a dimming signal, a field frequency signal pin SYNC for inputting a field frequency signal, a red light control pin PWMR for outputting a red light control signal, a green light control pin PWMG for outputting a green light control signal, and a blue light control pin PWMB for outputting a blue light control signal. The control chip U1 may be a cheaper chip, such as OZ9909 and MSP430, to further reduce the cost, and the specific type of the control chip U1 is not limited herein.
Further, referring to fig. 2, in an embodiment, the driving circuit of the display module further includes a voltage boosting circuit 40, and the movement interface circuit 10 is further configured to provide a voltage boosting power supply for the voltage boosting circuit 40. The boosting circuit 40 is configured to boost the boosting power supply to provide driving power for the red backlight, the green backlight, and the blue backlight, and adjust the luminance of the red backlight according to the red control signal, the luminance of the green backlight according to the green control signal, and the luminance of the blue backlight according to the blue control signal. The booster circuit 40 includes a booster chip U2.
Referring to fig. 3, in an embodiment of the present invention, the dimming output terminal PDMI of the core interface circuit 10 is connected to the dimming input terminal PDIM of the control circuit 30, and the power output terminal VCC of the core interface circuit 10 is connected to the power input terminal VCC of the voltage boost circuit 40; a field frequency input end SYNC of the control circuit 30 is connected with a field frequency output end STV of the logic interface circuit 20, a red light control end PWMR of the control circuit 30 is connected with a red light controlled end PWMR of the booster circuit 40, a green light control end PWMG of the control circuit 30 is connected with a green light controlled end PWMG of the booster circuit 40, and a blue light control end PWMB of the control circuit 30 is connected with a blue light controlled end PWMB of the booster circuit 40; the driving end LED + of the voltage boost circuit 40 is used to connect with the driven end LED + of the display module (not shown), the red light adjusting end LEDR of the voltage boost circuit 40 is used to connect with the adjusted end LEDR of the red backlight source, the green light adjusting end LEDG of the voltage boost circuit 40 is used to connect with the adjusted end LEDG of the green backlight source, and the blue light adjusting end LEDB of the voltage boost circuit 40 is used to connect with the adjusted end LEDB of the blue backlight source.
With reference to fig. 2, the core interface circuit 10 is further configured to provide an enable signal to the control circuit 30, and the control circuit 30 is triggered to start when receiving the enable signal. Specifically, the enable output terminal BLON of the movement interface circuit 10 is connected to the enable terminal EN of the control circuit 30.
It can be understood that the enabling function is added in the driving circuit of the display module, so that the driving circuit of the display module starts to work when receiving the enabling signal, the driving circuit of the display module is prevented from working for a long time, and electric energy is saved. In addition, the switching state of the control circuit 30 can be controlled to prevent malfunction and enhance reliability.
The working principle of the driving circuit of the display module is described below with reference to fig. 1 to 4:
first, the core interface circuit 10 outputs an enable signal to the control circuit 30, and the control circuit 30 is started.
Then, the control circuit 30 obtains the dimming signal through the movement interface circuit 10, and obtains the field frequency signal through the logic interface circuit 20.
Then, the control circuit 30 adjusts the dimming signal according to the field frequency signal to generate a red light control signal, a green light control signal, and a blue light control signal.
Meanwhile, the control circuit 30 outputs the red control signal, the green control signal, and the blue control signal to the voltage boost circuit 40 in a predetermined order. The red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
Next, the boosting circuit 40 obtains a boosting power supply through the movement interface circuit 10, and performs boosting processing on the boosting power supply to supply driving power supplies to the red backlight, the green backlight, and the blue backlight.
Finally, when receiving the red light control signal, the boost circuit 40 adjusts the light emitting degree of the red backlight source according to the duty ratio of the red light control signal; when receiving the green light control signal, the boost circuit 40 adjusts the light emitting degree of the green backlight source according to the duty ratio of the green light control signal; when receiving the blue light control signal, the boost circuit 40 adjusts the light emission level of the blue backlight according to the duty ratio of the blue light control signal.
Since the interval time of the light emission of the red backlight, the green backlight and the blue backlight is only the field frequency time, human eyes can perceive the color (i.e. the color) of the mixed red light, green light and blue light through the display module. Moreover, the light emitting degrees of the red backlight source, the green backlight source and the blue backlight source are independently adjustable, so that human eyes can feel different colors through the display module.
It can be understood that, compared with the existing display module which adopts the spatial color mixing method to realize color display, the backlight control frequency in the technical scheme is three times of the refresh frequency of the original liquid crystal screen.
Based on the driving circuit of the display module, the invention also provides a driving method of the display module. In the embodiment of the invention, the display module comprises a red backlight source, a green backlight source and a blue backlight source.
Referring to fig. 4, in an embodiment, the driving method of the display module includes the following steps:
s10, acquiring a dimming signal and a field frequency signal;
s20, generating a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence and display the light in a color manner;
the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
Specifically, in the working process of driving the display module by adopting the method:
first, a movement of a display device (such as a television) outputs a dimming signal and a field frequency signal.
Then, the dimming signal is adjusted according to the field frequency signal, and the red light control signal, the green light control signal and the blue light control signal are respectively generated and output once in three continuous field frequency time.
And finally, within three continuous field frequency time, the red backlight source, the green backlight source and the blue backlight source respectively emit light once, and after the light emitting field frequency time of one of the backlight sources, the next backlight source starts to emit light.
In the above process, the interval between the light emission of the red backlight source, the light emission of the green backlight source and the light emission of the blue backlight source is the field frequency time, and as long as the field frequency time is short enough, human eyes can feel the color of the mixed three primary color lights through the display module. Moreover, the three primary colors of light have different light emitting degrees, and human eyes can feel different colors. Therefore, the driving circuit of the display module can drive the display module to display different color pictures.
The technical scheme of the invention is as follows: firstly, acquiring a dimming signal and a field frequency signal; and then, generating a red light control signal, a green light control signal and a blue light control signal according to the dimming signal and the field frequency signal, and outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence so as to control a red backlight source, a green backlight source and a blue backlight source in the display module to emit light according to the preset sequence and display the light in a color manner. Because the three primary color light sources in the technical scheme emit light according to the preset sequence without emitting light at the same moment, the color display of the display module is realized by adopting one driving power supply, and therefore, the cost is lower.
It should be noted that, in another embodiment, the step of obtaining the dimming signal and the field frequency signal further includes:
detecting whether an enable signal is input;
if yes, acquiring a dimming signal and a field frequency signal;
if not, whether an enabling signal is input or not is continuously detected.
Therefore, the driving circuit of the display module starts to work when receiving the enabling signal, so that the display module is prevented from working for a long time, and electric energy is saved.
The present invention further provides a display device, which includes the driving circuit of the display module as described above, and the specific structure of the driving circuit of the display module refers to the above embodiments.
The display device may be an electronic device such as a television, a computer, a handheld communicator, and the like, which has a liquid crystal display screen, and the like, which are not listed here.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A drive circuit of a display module comprises a red backlight source, a green backlight source and a blue backlight source, and is characterized in that the drive circuit of the display module comprises a control circuit, a machine core interface circuit used for providing a dimming signal and an enabling signal for the control circuit, and a logic interface circuit used for providing a field frequency signal for the control circuit;
the control circuit is used for triggering and starting when receiving the enabling signal, adjusting the dimming signal according to the field frequency signal, generating a red light control signal, a green light control signal and a blue light control signal, outputting the red light control signal, the green light control signal and the blue light control signal to the display module according to a preset sequence, controlling the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence, and displaying the light in a color manner;
the driving circuit of the display module further comprises a booster circuit, and the movement interface circuit is further used for providing a booster power supply for the booster circuit; wherein the content of the first and second substances,
the boosting circuit is used for boosting the boosting power supply so as to provide driving power supplies for the red backlight source, the green backlight source and the blue backlight source; and the number of the first and second groups,
adjusting the brightness of the red backlight source according to the red light control signal, adjusting the brightness of the green backlight source according to the green light control signal, and adjusting the brightness of the blue backlight source according to the blue light control signal;
the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
2. The driving circuit of a display module of claim 1, wherein the control circuit comprises a control chip, the control chip comprising: the light modulation device comprises a light modulation signal pin used for inputting the light modulation signal, a field frequency signal pin used for inputting the field frequency signal, a red light control pin used for outputting the red light control signal, a green light control pin used for outputting the green light control signal and a blue light control pin used for outputting the blue light control signal.
3. A driving method of a display module comprises a red backlight source, a green backlight source and a blue backlight source, and is characterized by comprising the following steps:
detecting whether an enable signal is input;
if yes, acquiring a dimming signal and a field frequency signal;
the field frequency signal adjusts the dimming signal to generate a red light control signal, a green light control signal and a blue light control signal, and the red light control signal, the green light control signal and the blue light control signal are output to the display module according to a preset sequence so as to control the red backlight source, the green backlight source and the blue backlight source to emit light according to the preset sequence and display the light in a color manner;
adjusting the brightness of the red backlight source according to the red light control signal, adjusting the brightness of the green backlight source according to the green light control signal, and adjusting the brightness of the blue backlight source according to the blue light control signal;
the red light control signal, the green light control signal and the blue light control signal are respectively synchronous with the field frequency signal, the red light control signal, the green light control signal and the blue light control signal are mutually kept synchronous, and the mutual interval time sequence is field frequency time.
4. The method for driving a display module according to claim 3, wherein the step of detecting whether the enable signal is input comprises the following steps:
if not, whether an enabling signal is input or not is continuously detected.
5. A display device comprising a driving circuit of a display module according to any one of claims 1 to 2.
6. The display device of claim 5, wherein the display device is a television.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430535.2A CN107871478B (en) | 2017-12-26 | 2017-12-26 | Driving circuit and method of display module and display equipment |
| PCT/CN2018/095184 WO2019128186A1 (en) | 2017-12-26 | 2018-07-10 | Display module drive circuit and method, and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430535.2A CN107871478B (en) | 2017-12-26 | 2017-12-26 | Driving circuit and method of display module and display equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107871478A CN107871478A (en) | 2018-04-03 |
| CN107871478B true CN107871478B (en) | 2020-11-13 |
Family
ID=61756172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711430535.2A Active CN107871478B (en) | 2017-12-26 | 2017-12-26 | Driving circuit and method of display module and display equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107871478B (en) |
| WO (1) | WO2019128186A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871478B (en) * | 2017-12-26 | 2020-11-13 | 深圳Tcl新技术有限公司 | Driving circuit and method of display module and display equipment |
| CN108806618B (en) * | 2018-06-12 | 2021-08-24 | 深圳Tcl新技术有限公司 | Display screen and display device of tricolor light |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000324513A (en) * | 1999-05-06 | 2000-11-24 | Sharp Corp | Method and system for field progressive color image reception |
| CN2446625Y (en) * | 2000-06-12 | 2001-09-05 | 大连光洋科技工程有限公司 | Liquid crystal display backlight lamp power source auto controller |
| CN1841488A (en) * | 2005-03-30 | 2006-10-04 | 三洋爱普生映像元器件有限公司 | Method of driving liquid crystal display device, liquid crystal display device,and electronic apparatus |
| CN101369407A (en) * | 2008-10-14 | 2009-02-18 | 复旦大学 | Control method for field-sequential colorful LED back light source technology |
| CN101739984A (en) * | 2009-12-16 | 2010-06-16 | 康佳集团股份有限公司 | Liquid crystal without color film and color displaying method thereof |
| JP4677091B2 (en) * | 2000-11-30 | 2011-04-27 | キヤノン株式会社 | Color image display device |
| CN102356425A (en) * | 2009-03-19 | 2012-02-15 | 青森产业综合支持中心 | Field-sequential color type liquid crystal display apparatus and color display method therefor |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3984772B2 (en) * | 2000-03-08 | 2007-10-03 | 株式会社日立製作所 | Liquid crystal display device and light source for liquid crystal display device |
| CN1866344A (en) * | 2005-05-18 | 2006-11-22 | 深圳大学 | Color sequential liquid crystal display |
| CN100495508C (en) * | 2006-10-27 | 2009-06-03 | 深圳帝光电子有限公司 | LED dynamic backlight control circuit |
| CN101308633B (en) * | 2007-05-14 | 2011-01-19 | 联詠科技股份有限公司 | Color sequence control method, and backlight module and display apparatus using the same |
| CN101320165B (en) * | 2007-06-04 | 2011-09-07 | 比亚迪股份有限公司 | Colour liquid crystal display module group and its color displaying method |
| TWI404026B (en) * | 2008-08-13 | 2013-08-01 | Sitronix Technology Corp | Color adjustment liquid crystal display device and its adjustment method |
| US20130120467A1 (en) * | 2011-11-15 | 2013-05-16 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Color sequential liquid crystal display device |
| KR101974218B1 (en) * | 2012-05-04 | 2019-05-02 | 매그나칩 반도체 유한회사 | Led driver apparatus |
| CN103165084B (en) * | 2013-03-11 | 2015-08-19 | 深圳市华星光电技术有限公司 | Liquid crystal display and LED backlight thereof |
| CN104299576B (en) * | 2013-12-13 | 2017-12-15 | 天津三星电子有限公司 | A kind of display drive method, device and display |
| CN104036748B (en) * | 2014-06-20 | 2016-06-08 | 深圳市华星光电技术有限公司 | Field color sequential display and color control method thereof |
| CN105093642B (en) * | 2015-07-31 | 2018-02-16 | 深圳市华星光电技术有限公司 | A kind of backlight |
| CN105572987A (en) * | 2015-12-22 | 2016-05-11 | 深圳市华星光电技术有限公司 | Liquid crystal display unit and method for driving liquid crystal display unit to display images |
| CN107871478B (en) * | 2017-12-26 | 2020-11-13 | 深圳Tcl新技术有限公司 | Driving circuit and method of display module and display equipment |
-
2017
- 2017-12-26 CN CN201711430535.2A patent/CN107871478B/en active Active
-
2018
- 2018-07-10 WO PCT/CN2018/095184 patent/WO2019128186A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000324513A (en) * | 1999-05-06 | 2000-11-24 | Sharp Corp | Method and system for field progressive color image reception |
| CN2446625Y (en) * | 2000-06-12 | 2001-09-05 | 大连光洋科技工程有限公司 | Liquid crystal display backlight lamp power source auto controller |
| JP4677091B2 (en) * | 2000-11-30 | 2011-04-27 | キヤノン株式会社 | Color image display device |
| CN1841488A (en) * | 2005-03-30 | 2006-10-04 | 三洋爱普生映像元器件有限公司 | Method of driving liquid crystal display device, liquid crystal display device,and electronic apparatus |
| CN101369407A (en) * | 2008-10-14 | 2009-02-18 | 复旦大学 | Control method for field-sequential colorful LED back light source technology |
| CN102356425A (en) * | 2009-03-19 | 2012-02-15 | 青森产业综合支持中心 | Field-sequential color type liquid crystal display apparatus and color display method therefor |
| CN101739984A (en) * | 2009-12-16 | 2010-06-16 | 康佳集团股份有限公司 | Liquid crystal without color film and color displaying method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019128186A1 (en) | 2019-07-04 |
| CN107871478A (en) | 2018-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI380257B (en) | Methods and circuits for synchronous operation of display backlighting | |
| US8217887B2 (en) | System and method for backlight control for an electronic display | |
| KR101329967B1 (en) | Back light unit and liquid crystal display device using the same and driving method thereof | |
| US20080204382A1 (en) | Color management controller for constant color point in a field sequential lighting system | |
| CN107424573B (en) | Show the method and display system of image | |
| KR101980028B1 (en) | Backlight unit and driving method thereof, liquid crystal display device | |
| CN101639167A (en) | Method and apparatus for driving a backlight assembly | |
| EP2651187B1 (en) | Color temperature and illumination adjusting system, and method thereof | |
| EP2334148A2 (en) | Method and apparatus for LED driver color-sequential scan | |
| EP2126884B1 (en) | A system, method, and computer-readable medium for displaying light radiation | |
| KR20080073464A (en) | Apparatus for driving of light source and display device having the same and method of the driving | |
| CN107871478B (en) | Driving circuit and method of display module and display equipment | |
| US20070262733A1 (en) | Control method and control driving device for backlight module | |
| JP2008096902A (en) | Light emitting device and image display device equipped with the same | |
| US20130342434A1 (en) | Liquid crystal display device capable of reducing residual images and related method thereof | |
| CN107086029B (en) | Color generation method and device based on liquid crystal display module and readable storage medium | |
| CN105096843A (en) | Backlight source, adjustment method and adjustment device thereof and display device | |
| CN100507667C (en) | Backlight unit and LCD device using same | |
| KR20050085772A (en) | Scrolling backlight device for lcd display panel | |
| CN101083055A (en) | Control method of back light module unit and control driving mchanism thereof | |
| TW200809724A (en) | Controlling module and method for LED in color sequential LCOS display system | |
| CN109817166B (en) | Display device and driving method thereof | |
| KR102570515B1 (en) | Timing controller and didplay device having it | |
| CN105137627A (en) | Method and device for partition backlight detection | |
| CN108806618A (en) | The display screen and display equipment of three primary colours light |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |