CN202487127U - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
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- CN202487127U CN202487127U CN 201220060181 CN201220060181U CN202487127U CN 202487127 U CN202487127 U CN 202487127U CN 201220060181 CN201220060181 CN 201220060181 CN 201220060181 U CN201220060181 U CN 201220060181U CN 202487127 U CN202487127 U CN 202487127U
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Abstract
The utility model provides a backlight source which comprises a control unit, a driving unit, a light-emitting unit, a grayscale sensor and a data processing unit, wherein the grayscale sensor is used for detecting grayscale of a target area and peripheral areas of the target area, the data processing unit is used for judging whether the grayscale of the target area and the peripheral areas of the target area is the target grayscale or not, and the driving unit is used for receiving driving signals sent by the control unit to drive the light-emitting unit to emit light. When the grayscale of the target area and the peripheral areas of the target area is not the target grayscale, the data processing unit acquires the driving signals corresponding to the target grayscale, and the control unit sends the driving signals corresponding to the target grayscale to the driving unit to adjust luminance of the light-emitting unit, so that the grayscale of the target area and the peripheral areas of the target area to reach the target grayscale. The utility model further provides a display device.
Description
Technical field
The utility model relates to the technical field of backlight, particularly, relates to a kind of backlight and display device.
Background technology
Along with the appearance and the development of 3D film, increasing people hopes the 3D technical application to intelligent terminals such as computing machine, televisor or mobile phone.Because low in energy consumption, the long service life and the brilliance control in LED-backlit source are accurate, the backlight of increasing 3D display device adopts the LED-backlit source.
At present; The 3D display device be projection by the different visual angles production that is similar to two of people have two width of cloth pictures of horizontal view angle difference the time; What make that spectators' left eye sees through light-splitting device is that what to see from picture, right eye that LOOK LEFT is taken is the picture of taking from LOOK RIGHT, thereby in human brain, forms stereo-picture.
In the prior art, the backlight that the LED lamp is formed, the mode of normally utilizing white LED lamp to form matrix or employing scanning backlight provides dynamic backlight; But; The color saturation of this white light LEDs is low, and for example, blue-ray LED adds the white LED lamp that YAG fluorescent powder forms; Its color saturation only has 45%, and also easy generation light is crosstalked between the LED lamp matrix of different LED lamp composition.When above-mentioned LED-backlit source is applied in the display device; When especially being applied in the 3D display device; Reason such as be prone to crosstalk between the low and light owing to the contrast in this LED-backlit source causes especially low, the easy smear phenomenon of image definition of 3D display device of display device.
The utility model content
For addressing the above problem, the utility model provides a kind of backlight and display device, is used for solving the problem of low, the easy smear phenomenon of image definition of prior art display device.
For this reason, the utility model provides a kind of backlight, wherein, comprising:
The gray-scale sensor of the gray scale of control module, driver element, luminescence unit, detection target area and neighboring area thereof and judge whether the gray scale of said target area and neighboring area thereof is the data processing unit of target gray scale;
Said driver element is connected with luminescence unit with said control module respectively, and said driver element receives drive signal that said control module sends, and to drive said luminescence unit luminous;
Said data processing unit is connected with said gray-scale sensor, control module respectively; When the gray scale in said target area and neighboring area thereof is not the target gray scale; Said data processing unit obtains the drive signal corresponding with the target gray scale, and said control module sends to said driver element with the above-mentioned drive signal corresponding with the target gray scale.
Wherein, said drive signal is the pulse width modulation (PWM) signal, and said data processing unit calculates the pwm signal of the driving said luminescence unit corresponding with the target gray scale of said target area and neighboring area thereof.
Wherein, said data processing unit comprises memory module, stores the mapping table of the target gray scale of said target area and neighboring area thereof the drive signal corresponding with luminescence unit in the said memory module.
Wherein, said drive signal is the pulse width modulation (PWM) signal, said data processing unit according to said target area and neighboring area thereof object brightness in said mapping table, retrieve corresponding pwm signal.
Wherein, said luminescence unit comprises emitting red light subelement, green emitting subelement and blue-light-emitting subelement.
Wherein, said luminescence unit comprises red LED lamp, green LED lamp and blue led lamp.
Wherein, said backlight also comprises: the line source that said luminescence unit is sent is transformed into the LGP of area source.
The utility model also provides a kind of display device, wherein, comprises above-mentioned any one backlight.
Wherein, said display device is the 3D display device.
The utlity model has following beneficial effect:
The backlight that the utility model provides; Detect the gray scale of target area and neighboring area thereof through gray-scale sensor; When the gray scale of target area and neighboring area thereof and target gray scale are inconsistent; Data processing unit will obtain and the corresponding drive signal of target gray scale; Control module sends to driver element with the luminous brightness in driven for emitting lights unit with above-mentioned drive signal, thereby adjusts the brightness of luminescence unit in real time, makes the gray scale of target area and neighboring area thereof reach the target gray scale accurately.
The display device that the utility model provides; Brightness through real-time adjustment luminescence unit; Make the gray scale of target area and neighboring area thereof reach the target gray scale accurately, thereby avoid the use of shadow shield, provide cost savings; Also improve the image definition and the color saturation of display device simultaneously, and avoided the smear phenomenon.
Description of drawings
Fig. 1 is the structural representation of the utility model backlight first embodiment;
Fig. 2 is the structural representation of the utility model backlight second embodiment;
Fig. 3 is the process flow diagram of the utility model backlight second embodiment.
Embodiment
For making those skilled in the art understand the technical scheme of the utility model better, backlight and the display device that the utility model provides is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the utility model backlight first embodiment.As shown in Figure 1; The present embodiment backlight comprises control module 101, driver element 102, luminescence unit 103, data processing unit 104 and gray-scale sensor 105; Wherein, Driver element 102 is connected with luminescence unit 103 with control module 101 respectively, and control module 101 also is connected with data processing unit 104, and data processing unit 104 is connected with gray-scale sensor 105 again; After the control module 101 receiver, video picture signals; According to the target gray scale of video image to driver element 102 output drive signals; So that red light source, green light source and blue-light source in the driver element 102 driven for emitting lights unit 103 are luminous, control module 101 simultaneously also will be to the target half-tone information of data processing unit 104 transmissions about video image; The gray scale of gray-scale sensor 105 detection target areas and neighboring area thereof; And detected half-tone information sent to data processing unit 104; Data processing unit 104 judges whether the gray scale of target area and neighboring area thereof is the target gray scale of video image; When the gray scale of target area and neighboring area thereof is not the target gray scale, data processing unit 104 will obtain and the corresponding drive signal of target gray scale, then; Data processing unit 104 sends to control module 101 with above-mentioned with the corresponding drive signal of target gray scale; It is luminous with driven for emitting lights unit 103 that the drive signal that control module 101 obtains data processing unit 104 sends to driver element 102, thereby adjust the brightness of luminescence unit 103 in real time, makes the gray scale of target area and neighboring area thereof reach the target gray scale.
In the present embodiment; Detect the gray scale of target area and neighboring area thereof through gray-scale sensor; When the gray scale of target area and neighboring area thereof is not the target gray scale, data processing unit will obtain and the corresponding drive signal of target gray scale, and it is luminous with the driven for emitting lights unit that control module sends to driver element with above-mentioned drive signal; Thereby adjust the brightness of luminescence unit in real time, make the gray scale of target area and neighboring area thereof reach the target gray scale accurately.
Fig. 2 is the structural representation of the utility model backlight second embodiment.As shown in Figure 2, in the present embodiment, backlight comprises that also the line source that luminescence unit 103 is sent is transformed into the LGP 106 of area source; In side entrance back; Luminescence unit 103 is arranged on a side of LGP 106, in direct-type backlight, luminescence unit 103 be arranged on LGP below.In the present embodiment, luminescence unit 103 can the emitting red light subelement, green emitting subelement and blue-light-emitting subelement, and for example, luminescence unit 103 can be the red light emitting layer in the OLED display, green light emitting layer and blue light-emitting layer; In practical application; Luminescence unit 103 also can comprise red LED lamp 1031, green LED lamp 1032 and blue led lamp 1033; Wherein, Red LED lamp 1031, a green LED lamp 1032 and a blue led lamp 1033 form a RGB LED unit, and the corresponding gray-scale sensor 105 in each RGB LED unit, gray-scale sensor 105 detect three kinds of color LED lamps respectively.
In practical application; Driver element 102 can be through pulse-length modulation (Pulse Width Modulation; PWM) signal is as drive signal; Duty through the adjustment pwm signal is recently adjusted the brightness of red LED lamp 1031 in the luminescence unit 103, green LED lamp 1032 and blue led lamp respectively, so that the gray scale of target area and neighboring area thereof is the target gray scale.
In the present embodiment; Data processing unit 104 can also comprise memory module; Store the mapping table of the target gray scale of target area and neighboring area thereof the pwm signal corresponding in the memory module with luminescence unit; Gray scale in target area and neighboring area thereof is not under the situation of target gray scale; Data processing unit 104 will retrieve from memory module and the corresponding pwm signal of target gray scale, need not obtain the gray scale drive signal corresponding with luminescence unit of target area and neighboring area thereof through calculating, thereby save the time of the gray scale of obtaining target area and neighboring area thereof the drive signal corresponding with luminescence unit.
Fig. 3 is the process flow diagram of the utility model backlight second embodiment.As shown in Figure 3, the concrete workflow of the utility model backlight comprises the steps:
In this step; After the control module 101 receiver, video picture signals; Obtain the target gray scale of video image; Luminous with the LED lamp of three kinds of colors in the driven for emitting lights unit 103 to driver element 102 output drive signals, simultaneously, control module 101 also sends to data processing unit 104 with the target gray scale of video image; In practical application, drive signal can be pwm signal, so, can recently adjust the luminosity of red LED lamp, green LED lamp and blue led lamp respectively through the duty of control pwm signal.
In this step, the gray scale of gray-scale sensor 105 detection target areas and neighboring area, and, get into step 303 then with testing result notification data processing unit 104.
In this step; After data processing unit 104 receives the gray scale of target area and neighboring area; Whether the gray scale of judging target area and neighboring area thereof is the target gray scale of video image, when the gray scale of target area and neighboring area thereof is not the target gray scale, gets into step 304.
In this step; Gray scale in target area and neighboring area thereof is not under the situation of target gray scale; Data processing unit 104 will retrieve from memory module and the corresponding pwm signal of target gray scale; Then the pwm signal that retrieves is sent to control module 101, control module 101 sends to the brightness of control drive unit 102 with adjustment luminescence unit 103 with pwm signal.
In the present embodiment; When the gray scale of target area and neighboring area thereof and target gray scale are inconsistent; Data processing unit will be from memory module the mapping table of the target gray scale of target area and neighboring area thereof the drive signal corresponding with luminescence unit retrieve corresponding drive signal; Control module sends to the brightness of driver element with the adjustment luminescence unit with the above-mentioned drive signal that retrieves; Thereby adjust the brightness of luminescence unit in real time, make the gray scale of target area and neighboring area thereof reach the target gray scale accurately.
The present invention also provides a kind of display device, and wherein, display device comprises display panel and any one above-mentioned backlight.In the present embodiment; Backlight is that structure shown in Figure 2 is an example, and after control module in the backlight 101 receives video signal, control module 101 will obtain the target gray scale of video image; And it is luminous with driven for emitting lights unit 103 to driver element 102 output drive signals; Drive signal can be pwm signal, then, and the gray scale of gray-scale sensor 105 detection target areas and neighboring area; Gray scale in target area and neighboring area thereof is not under the situation of target gray scale; Data processing unit 104 will retrieve from memory module and the corresponding pwm signal of target gray scale, and control module 101 comes the brightness of control drive unit 102 with real-time adjustment luminescence unit 103 according to pwm signal, make the gray scale of target area and neighboring area thereof reach the target gray scale accurately.
In practical application, embodiment of the invention display device can for: liquid crystal panel, Electronic Paper, oled panel, LCD TV, LCD, DPF, mobile phone, panel computer etc. have the product or the parts of any Presentation Function.
In the present embodiment; Brightness through real-time adjustment luminescence unit; Make the gray scale of target area and neighboring area thereof accurately reach the target gray scale, thereby avoid using shadow shield, provide cost savings in display device; Also improve the image definition and the color saturation of display device simultaneously, and avoided the smear phenomenon.
It is understandable that above embodiment only is the illustrative embodiments that adopts for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection domain of the utility model.
Claims (8)
1. a backlight is characterized in that, comprising:
The gray-scale sensor of the gray scale of control module, driver element, luminescence unit, detection target area and neighboring area thereof and judge whether the gray scale of said target area and neighboring area thereof is the data processing unit of target gray scale;
Said driver element is connected with luminescence unit with said control module respectively, and said driver element receives drive signal that said control module sends, and to drive said luminescence unit luminous;
Said data processing unit is connected with said gray-scale sensor, control module respectively; When the gray scale in said target area and neighboring area thereof is not the target gray scale; Said data processing unit obtains the drive signal corresponding with the target gray scale, and said control module sends to said driver element with the above-mentioned drive signal corresponding with the target gray scale.
2. backlight according to claim 1; It is characterized in that; Said drive signal is the pulse width modulation (PWM) signal, and said data processing unit calculates the pwm signal of the driving said luminescence unit corresponding with the target gray scale of said target area and neighboring area thereof.
3. backlight according to claim 1 is characterized in that said data processing unit comprises memory module, stores the mapping table of the target gray scale of said target area and neighboring area thereof the drive signal corresponding with luminescence unit in the said memory module.
4. backlight according to claim 3; It is characterized in that; Said drive signal is the pulse width modulation (PWM) signal, said data processing unit according to said target area and neighboring area thereof object brightness in said mapping table, retrieve corresponding pwm signal.
5. backlight according to claim 1 is characterized in that, said luminescence unit comprises emitting red light subelement, green emitting subelement and blue-light-emitting subelement.
6. backlight according to claim 1 is characterized in that, said luminescence unit comprises red LED lamp, green LED lamp and blue led lamp.
7. backlight according to claim 1 is characterized in that also comprising: the line source that said luminescence unit is sent is transformed into the LGP of area source.
8. a display device comprises the arbitrary described backlight of above-mentioned claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220060181 CN202487127U (en) | 2012-02-22 | 2012-02-22 | Backlight source and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220060181 CN202487127U (en) | 2012-02-22 | 2012-02-22 | Backlight source and display device |
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| CN202487127U true CN202487127U (en) | 2012-10-10 |
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| CN 201220060181 Expired - Lifetime CN202487127U (en) | 2012-02-22 | 2012-02-22 | Backlight source and display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427816A (en) * | 2014-09-19 | 2016-03-23 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN110136656A (en) * | 2019-04-24 | 2019-08-16 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN111340730A (en) * | 2020-02-26 | 2020-06-26 | Oppo广东移动通信有限公司 | Smear phenomenon eliminating method, terminal and storage medium |
| WO2022027756A1 (en) * | 2020-08-05 | 2022-02-10 | 北京显芯科技有限公司 | Backlight circuit control method, backlight circuit, and lcd screen |
-
2012
- 2012-02-22 CN CN 201220060181 patent/CN202487127U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427816A (en) * | 2014-09-19 | 2016-03-23 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105427816B (en) * | 2014-09-19 | 2018-12-18 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN110136656A (en) * | 2019-04-24 | 2019-08-16 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN111340730A (en) * | 2020-02-26 | 2020-06-26 | Oppo广东移动通信有限公司 | Smear phenomenon eliminating method, terminal and storage medium |
| CN111340730B (en) * | 2020-02-26 | 2023-05-09 | Oppo广东移动通信有限公司 | Method for eliminating smear phenomenon, terminal and storage medium |
| WO2022027756A1 (en) * | 2020-08-05 | 2022-02-10 | 北京显芯科技有限公司 | Backlight circuit control method, backlight circuit, and lcd screen |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20121010 |