CN104835477A - Method and system for controlling integral brightness of display module - Google Patents
Method and system for controlling integral brightness of display module Download PDFInfo
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- CN104835477A CN104835477A CN201410047817.4A CN201410047817A CN104835477A CN 104835477 A CN104835477 A CN 104835477A CN 201410047817 A CN201410047817 A CN 201410047817A CN 104835477 A CN104835477 A CN 104835477A
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- viewing area
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Abstract
The invention discloses a method and system for controlling the integral brightness of a display module. The method comprises: obtaining the size of a pattern displayed in each display area on a display panel, or the distance between each display area on the display panel and a corresponding LED backlight; and adjusting a lightening-duty ratio of the corresponding LED backlight of each display area, according to the size of the pattern displayed in each display area on the display panel, or according to the distance between each display area on the display panel and the corresponding LED backlight, to make the brightness of the pattern displayed in each display area to be uniform. According to the invention, an effect of uniform brightness of a whole display area can be achieved, the speed is high, and the cost is low.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of control method and system of display module overall brightness.
Background technology
When using display module to show, when display pattern is not of uniform size, or the viewing area distance LED backlight distance of different pattern is not for the moment, there will be the problem that the display brightness of each pattern is inconsistent.Classic method by Circuit tuning, then coordinates software to change, thus reaches the consistent effect of display brightness, and its construction cycle is long, and cost of development is higher.
Summary of the invention
Based on this, be necessary the defect for prior art and deficiency, a kind of control method and system of display module overall brightness of low cost be provided, regulation and control can be carried out to display module overall brightness fast, make the brightness in each pattern displaying region consistent.
For realizing the control method of the display module overall brightness that the object of the invention provides, comprise the following steps:
Obtain the size of the pattern shown by each viewing area on display panel, or the distance between the LED backlight corresponding with it of each viewing area on display panel;
The size of the pattern according to each viewing area on described display panel, or the distance between the LED backlight that each viewing area on described display panel is corresponding with it, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, makes the brightness of the pattern described in each shown by viewing area consistent.
Particularly, the size of described pattern according to each viewing area on display panel, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, makes the brightness of the pattern described in each shown by viewing area consistent, comprises the following steps:
From the pattern shown by viewing area described in each described display panel, choose pattern described in one of them shown by viewing area as standard display pattern, the pattern described in other shown by viewing area is as non-standard display pattern;
Size between more described standard display pattern and described non-standard display pattern;
If described non-standard display pattern is greater than described standard display pattern, then what increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
If described non-standard display pattern is less than described standard display pattern, then what reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
Particularly, distance between the described LED backlight corresponding with it according to each viewing area on display panel, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, makes the brightness of the pattern described in each shown by viewing area consistent, comprises the following steps:
Pattern described in one of them shown by viewing area is chosen as standard display pattern from the pattern shown by viewing area described in each described display panel, pattern described in other shown by viewing area as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at described standard display pattern place as with reference to distance;
Size described in Distance geometry between the LED backlight that the viewing area at more described non-standard display pattern place is corresponding with it between reference distance;
If the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it is greater than described reference distance, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
If the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it is less than described reference distance, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
Accordingly, for realizing the control system of the display module overall brightness that the object of the invention provides, controller, driving chip and LED backlight is comprised;
Described controller connects described driving chip and described LED backlight respectively;
Described LED backlight is connected with the port of described driving chip;
Described controller is used for controlling described LED backlight by described driving chip and lights, and the size of pattern according to each viewing area on display panel, or light dutycycle according to described LED backlight corresponding to the viewing area described in each of the distance adjustment between the described LED backlight that each viewing area on display panel is corresponding with it, make the brightness of the pattern described in each shown by viewing area consistent.
Further, described controller comprises first and chooses module, the first comparison module, the first adjustment module and the second adjustment module;
Described first chooses module, for choosing pattern described in one of them shown by viewing area as standard display pattern from the pattern shown by viewing area described in each on described display panel, the pattern described in other shown by viewing area is as non-standard display pattern;
Described first comparison module, for the size between more described standard display pattern and described non-standard display pattern;
Described first adjustment module, if be greater than described standard display pattern for described non-standard display pattern, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
Described second adjustment module, if be less than described standard display pattern for described non-standard display pattern, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
Further, described controller also comprises second and chooses module, the second comparison module, the 3rd adjustment module and the 4th adjustment module;
Described second chooses module, for choosing pattern described in one of them shown by viewing area as standard display pattern from the pattern shown by viewing area described in each on described display panel, pattern described in other shown by viewing area as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at described standard display pattern place as with reference to distance;
Described second comparison module, for the size between reference distance described in the Distance geometry between the LED backlight that the viewing area at more described non-standard display pattern place is corresponding with it;
Described 3rd adjustment module, if be greater than described reference distance for the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
Described 4th adjustment module, if be less than described reference distance for the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
Beneficial effect of the present invention: the control method of display module overall brightness provided by the invention and system, the size of the pattern according to each viewing area on display panel, or according to the distance between the LED backlight that each viewing area on display panel is corresponding with it, what regulate LED backlight corresponding to each viewing area lights dutycycle, make the brightness of the pattern shown by each viewing area consistent, speed is fast and cost is low.
Accompanying drawing explanation
In order to the object of the control method and system that make display module overall brightness of the present invention, technical scheme and advantage are clearly understood, below in conjunction with concrete drawings and the specific embodiments, the control method of display module overall brightness of the present invention and system are further elaborated.
Fig. 1 is the schematic diagram of an embodiment of the control method of display module overall brightness of the present invention;
Fig. 2 is the process flow diagram of a specific embodiment of the control method of display module overall brightness of the present invention;
Fig. 3 is the process flow diagram of another specific embodiment of the control method of display module overall brightness of the present invention;
Fig. 4 is the structural representation of an embodiment of the control system of display module overall brightness of the present invention;
Fig. 5 is the schematic diagram of an application example of the control system of display module overall brightness of the present invention.
Embodiment
Usually, use display module when showing, the LED backlight that each viewing area on display panel is corresponding to light dutycycle be identical.Like this, when display panel showing multiple pattern simultaneously, the brightness that just there will be the smaller viewing area of display pattern is higher than the brightness of the larger viewing area of display pattern, or, the viewing area distance LED(light emitting diode of pattern) brightness of backlight viewing area far away lower than the brightness of the nearer viewing area of distance LED backlight, the problem that namely display brightness of each pattern is inconsistent.
It should be noted that, display pattern of the present invention is smaller refers to that the area of the viewing area that this pattern occupies is less, the density of the LED backlight distribution that the viewing area at its place is corresponding is comparatively large, and the brightness of the brightness of this viewing area just viewing area, larger pattern place is high like this.For more existing non-planar display panels, the distance between the LED backlight that the viewing area of each pattern is corresponding with it is not etc.This just makes the brightness of the distant viewing area of distance LED backlight, the viewing area of pattern lower than the brightness of the nearer viewing area of distance LED backlight.
See Fig. 1, the control method of display module overall brightness provided by the invention, comprises the following steps:
S100, obtains the size of the pattern shown by each viewing area on display panel, or the distance between the LED backlight corresponding with it of each viewing area on display panel.
Distance between the LED backlight that each viewing area on the size of the pattern shown by each viewing area on display panel and display panel is corresponding with it can obtain from the Fabrication parameter of display module, also can be obtained by visual inspection or experiment in procedure for displaying.
S200, the size of the pattern according to each viewing area on display panel, or according to the distance between the LED backlight that each viewing area on display panel is corresponding with it, what regulate LED backlight corresponding to each viewing area lights dutycycle, makes the brightness of the pattern shown by each viewing area consistent.
Concrete, less for display pattern, or its viewing area distance LED backlight is closer, reduces brightness by the dutycycle of lighting reducing the LED backlight of its correspondence; Larger for display pattern, or its viewing area distance LED backlight is distant, improves brightness, finally make the relative brightness of the viewing area of each pattern reach consistent by the dutycycle of lighting increasing the LED backlight of its correspondence.
The present invention is by software control, and can realize the effect of each viewing area brightness uniformity of whole display panel without the need to adjusting hardware control circuit, speed is fast and cost is low.
Particularly, see Fig. 2, in step S200, the size of the pattern according to each viewing area on display panel, what regulate LED backlight corresponding to each viewing area lights dutycycle, makes the brightness of the pattern shown by each viewing area consistent, comprises the following steps:
S210, from the pattern shown by each viewing area display panel, choose pattern shown by one of them viewing area as standard display pattern, the pattern shown by other viewing areas is as non-standard display pattern;
S220, the size between standard of comparison display pattern and non-standard display pattern;
S230, if not standard display pattern is greater than standard display pattern, then what increase LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern;
S240, if not standard display pattern is less than standard display pattern, then what reduce LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern.
Further, see Fig. 3, in step S200, according to the distance between the LED backlight that each viewing area on display panel is corresponding with it, what regulate LED backlight corresponding to each viewing area lights dutycycle, make the brightness of the pattern shown by each viewing area consistent, comprise the following steps:
S250, pattern shown by one of them viewing area is chosen as standard display pattern from the pattern shown by each viewing area display panel, pattern shown by other viewing areas as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at standard display pattern place as with reference to distance;
S260, the size between the Distance geometry reference distance between the LED backlight that the viewing area at more non-standard display pattern place is corresponding with it;
S270, if not the distance between the LED backlight that the viewing area at standard display pattern place is corresponding with it is greater than reference distance, what then increase LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern;
S280, if not the distance between the LED backlight that the viewing area at standard display pattern place is corresponding with it is less than reference distance, what then reduce LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern.
See Fig. 4, based on same inventive concept, the present invention also provides a kind of control system of display module overall brightness, comprise controller 100, driving chip 200 and LED backlight 300, controller 100 connects driving chip 200 and LED backlight 300 respectively, and LED backlight 300 is connected with the port of driving chip 200.Controller 100 is lighted for controlling LED backlight 300 by driving chip 200, and the size of pattern according to each viewing area on display panel, or light dutycycle according to LED backlight 300 corresponding to each viewing area of distance adjustment between the LED backlight 300 that each viewing area on display panel is corresponding with it, make the brightness of the pattern shown by each viewing area consistent.
Concrete, less for display pattern, or its viewing area distance LED backlight is closer, and controller 100 reduces the LED backlight 300 of its correspondence dutycycle of lighting by driving chip 200 reduces brightness; Larger for display pattern, or its viewing area distance LED backlight 300 is distant, controller 100 improves brightness by driving chip 200 by the dutycycle of lighting of the LED backlight 300 increasing its correspondence, finally makes the relative brightness of the viewing area of each pattern reach consistent.
When the control system of display module overall brightness of the present invention works, can by the size of the pattern shown by each viewing area on display panel, or the distance between the LED backlight that each viewing area on display panel is corresponding with it is as running parameter, programming is carried out to controller, thus realizes the effect of each viewing area brightness uniformity of whole display panel fast, at low cost.
Further, controller 100 comprises first and chooses module 110, first comparison module 120, first adjustment module 130 and the second adjustment module 140;
First chooses module 110, and for choosing pattern shown by one of them viewing area as standard display pattern from the pattern shown by each viewing area on display panel, the pattern shown by other viewing areas is as non-standard display pattern;
First comparison module 120, for the size between standard of comparison display pattern and non-standard display pattern;
First adjustment module 130, if not be greater than standard display pattern for standard display pattern, then what increase LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern;
Second adjustment module 140, if not be less than standard display pattern for standard display pattern, then what reduce LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern.
Further, controller also comprises second and chooses module 150, second comparison module 160, the 3rd adjustment module 170 and the 4th adjustment module 180;
Second chooses module 150, for choosing pattern shown by one of them viewing area as standard display pattern from the pattern shown by each viewing area on display panel, pattern shown by other viewing areas as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at standard display pattern place as with reference to distance;
Second comparison module 160, for the size between the Distance geometry reference distance between the LED backlight that the viewing area at more non-standard display pattern place is corresponding with it;
3rd adjustment module 170, if not be greater than reference distance for the distance between the LED backlight that the viewing area at standard display pattern place is corresponding with it, what then increase LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern;
4th adjustment module 180, if not be less than reference distance for the distance between the LED backlight that the viewing area at standard display pattern place is corresponding with it, what then reduce LED backlight corresponding to the viewing area at non-standard display pattern place lights dutycycle, makes non-standard display pattern consistent with the brightness of standard display pattern.
Below, the embody rule example of the control system of a display module overall brightness provided by the invention is enumerated, see Fig. 5:
Wherein, the master control donsole (common cathode) of the pattern corresponding to the LED backlight that COM1 forms for light emitting diode 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, the master control donsole (common cathode) of the pattern corresponding to the LED backlight that COM2 forms for light emitting diode 2A, 2B, 2C, 2D, 2E, 2F, 2G, 2H, the master control donsole (common cathode) of the pattern corresponding to the LED backlight that COMn forms for light emitting diode nA, nB, nC, nD, nE, nF, nG, nH.
If light a pattern, first control the master control donsole output low level belonging to this pattern, the driving chip end of this pattern of control linkage exports high level simultaneously.
By the dutycycle of customization dynamic scan COM port, namely the time that each COM port is chosen is customized, when in cycle length, the low level duration that COM1 port exports than COM2 port is time long, it is longer that light emitting diode 1A, 1B, 1C, 1D, 1E, 1F, 1G, the 1H be connected on COM1 is lit the time, it is shorter that light emitting diode 2A, 2B, 2C, 2D, 2E, 2F, 2G, the 2H be connected to accordingly on COM2 is lit the time, thus visually sensation connects the display pattern brightness of COM1 higher than the display pattern connecting COM2.
The brightness being connected to the display pattern in same COM port is consistent, optionally can increase and decrease pattern.
Further, by increasing COM port, the progression of different brightness can be increased.
The present invention lights by LED backlight corresponding to adjustment viewing area the brightness regulation that dutycycle realizes dynamic scan LED display pattern, solve the problem that each viewing area display brightness of display module is uneven, it directly can pass through software control, while realizing whole viewing area brightness uniformity, display can also be highlighted or weaken display selection area, reach the effect given top priority to what is the most important, speed is fast, and cost is low.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (6)
1. a control method for display module overall brightness, is characterized in that, comprises the following steps:
Obtain the size of the pattern shown by each viewing area on display panel, or the distance between the LED backlight corresponding with it of each viewing area on display panel;
The size of the pattern according to each viewing area on described display panel, or the distance between the LED backlight that each viewing area on described display panel is corresponding with it, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, makes the brightness of the pattern described in each shown by viewing area consistent.
2. the control method of display module overall brightness according to claim 1, it is characterized in that, the size of described pattern according to each viewing area on display panel, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, make the brightness of the pattern described in each shown by viewing area consistent, comprise the following steps:
From the pattern shown by viewing area described in each described display panel, choose pattern described in one of them shown by viewing area as standard display pattern, the pattern described in other shown by viewing area is as non-standard display pattern;
Size between more described standard display pattern and described non-standard display pattern;
If described non-standard display pattern is greater than described standard display pattern, then what increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
If described non-standard display pattern is less than described standard display pattern, then what reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
3. the control method of display module overall brightness according to claim 1 and 2, it is characterized in that, distance between the described LED backlight corresponding with it according to each viewing area on display panel, what regulate LED backlight corresponding to viewing area described in each lights dutycycle, make the brightness of the pattern described in each shown by viewing area consistent, comprise the following steps:
Pattern described in one of them shown by viewing area is chosen as standard display pattern from the pattern shown by viewing area described in each described display panel, pattern described in other shown by viewing area as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at described standard display pattern place as with reference to distance;
Size described in Distance geometry between the LED backlight that the viewing area at more described non-standard display pattern place is corresponding with it between reference distance;
If the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it is greater than described reference distance, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
If the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it is less than described reference distance, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
4. a control system for display module overall brightness, is characterized in that, comprises controller, driving chip and LED backlight;
Described controller connects described driving chip and described LED backlight respectively;
Described LED backlight is connected with the port of described driving chip;
Described controller is used for controlling described LED backlight by described driving chip and lights, and the size of pattern according to each viewing area on display panel, or light dutycycle according to described LED backlight corresponding to the viewing area described in each of the distance adjustment between the described LED backlight that each viewing area on display panel is corresponding with it, make the brightness of the pattern described in each shown by viewing area consistent.
5. the control system of display module overall brightness according to claim 4, is characterized in that, described controller comprises first and chooses module, the first comparison module, the first adjustment module and the second adjustment module;
Described first chooses module, for choosing pattern described in one of them shown by viewing area as standard display pattern from the pattern shown by viewing area described in each on described display panel, the pattern described in other shown by viewing area is as non-standard display pattern;
Described first comparison module, for the size between more described standard display pattern and described non-standard display pattern;
Described first adjustment module, if be greater than described standard display pattern for described non-standard display pattern, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
Described second adjustment module, if be less than described standard display pattern for described non-standard display pattern, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
6. the control system of the display module overall brightness according to claim 4 or 5, is characterized in that, described controller also comprises second and chooses module, the second comparison module, the 3rd adjustment module and the 4th adjustment module;
Described second chooses module, for choosing pattern described in one of them shown by viewing area as standard display pattern from the pattern shown by viewing area described in each on described display panel, pattern described in other shown by viewing area as non-standard display pattern, and using the distance between LED backlight corresponding with it for the viewing area at described standard display pattern place as with reference to distance;
Described second comparison module, for the size between reference distance described in the Distance geometry between the LED backlight that the viewing area at more described non-standard display pattern place is corresponding with it;
Described 3rd adjustment module, if be greater than described reference distance for the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it, what then increase LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern;
Described 4th adjustment module, if be less than described reference distance for the distance between the LED backlight that the viewing area at described non-standard display pattern place is corresponding with it, what then reduce LED backlight corresponding to the viewing area at described non-standard display pattern place lights dutycycle, makes described non-standard display pattern consistent with the brightness of described standard display pattern.
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