CN201772992U - Handheld detector capable of conducting point-by-point detection to light-emitting diode (LED) backlighting liquid crystal display (LCD) - Google Patents
Handheld detector capable of conducting point-by-point detection to light-emitting diode (LED) backlighting liquid crystal display (LCD) Download PDFInfo
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- CN201772992U CN201772992U CN2010201979581U CN201020197958U CN201772992U CN 201772992 U CN201772992 U CN 201772992U CN 2010201979581 U CN2010201979581 U CN 2010201979581U CN 201020197958 U CN201020197958 U CN 201020197958U CN 201772992 U CN201772992 U CN 201772992U
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Abstract
The utility model provides a handheld detector capable of conducting point-by-point detection to a light-emitting diode (LED) backlighting liquid crystal display (LCD). Different from detection methods in the prior art, the handheld detector is used for the point-by-point detection of a pixel light source on the LED backlighting LCD. The handheld detector comprises a silicon photocell, a central processing unit, a memory, an LED lamp and an LED driving circuit, wherein the silicon photocell is used for detecting a luminous point to be detected, the central processing unit is used for processing data, the memory is connected with the central processing unit, and used for storing a standard photoelectric parameter which is used for being called by the central processing unit for comparison, and storing a data processing result of the central processing unit, the LED lamp is driven by the LED driving circuit, used for supplementing light for the silicon photocell, and arranged at a light receiving position on the silicon photocell, and the LED driving circuit is connected with the central processing unit, and drives the LED lamp according to a command of the central processing unit. The utility model relates to detection equipment for the LED backlighting LCD, which is used for detecting the quality of similar displays.
Description
Technical field
The utility model relates to a kind of checkout equipment of LCD display of LED-backlit, is used for the Quality Detection of this class display.
Background technology
The patent in China Patent No. ZL 200920142415.7, open February 24 2010 date has been put down in writing the technical scheme of a kind of pointwise school LED-backlit LCD display, this technical scheme adopts the luminous point on the silicon photocell point survey screen, draw the led light source performance of this luminous point by the optical information data of direct collection luminous point, and can directly carry out correction adjustment this LED.
The testing result that above-mentioned detection method CPU (central processing unit) obtains comes from silicon photocell.
The utility model content
Technical problem to be solved in the utility model is: a kind of above-mentioned detection method that is different from is provided, is used for the pixel light source on the pointwise detection LED-backlit LCD display.
In order to address the above problem, but the utility model provides a kind of pointwise to detect the hand-held detector of LED-backlit LCD display, comprises the silicon photocell that luminous point to be detected is detected, and it also comprises:
The CPU (central processing unit) of hand-held detector is used for deal with data;
Storer is connected with CPU (central processing unit), is used for the storage standards photoelectric parameter, and this photoelectric parameter calls contrast for CPU (central processing unit), and the data processed result of storage CPU (central processing unit);
The LED lamp is driven by led drive circuit, and in order to give the silicon photocell light filling, it is installed in the light-receiving place of silicon photocell;
Led drive circuit is connected with CPU (central processing unit), and it is according to the instruction driving LED lamp of CPU (central processing unit).
Preferably: it also comprises display screen, and display screen is connected with described CPU (central processing unit).
The beneficial effects of the utility model:
Compared to existing technology, the utility model provides a kind of different LED-backlit LCD detection technique.The utility model scheme is the weighting standard value (or valid value range) of default this display led parameter in storer earlier, obtain the optical parameter of the LED that detects pixel then by silicon photocell, adjust simultaneously the additional light of LED lamp on the hand-held detector step by step, additional light adds that the parameter of the light of pixel adds that weighting parameter to conformance with standard value can finish this luminous point and detect.The convert optical parameter of LED on the pixel of the power supply parameter of computing machine by the LED lamp of light filling is to reach the purpose of the pixel LED that detects liquid crystal display.
Description of drawings
Fig. 1 is a structural drawing of the present utility model.
Embodiment
But the hand-held detector of a kind of pointwise detection LED-backlit LCD display that the utility model proposes as shown in the figure.
This hand-held detector comprises the silicon photocell 1 that luminous point 2 to be detected is detected, and luminous point 2 to be detected is the LED of the pixel on the LCD.And
The CPU (central processing unit) 3 of hand-held detector is used for deal with data;
Storer 4 is connected with CPU (central processing unit) 3, is used for the storage standards photoelectric parameter, and this photoelectric parameter calls contrast for CPU (central processing unit), and the data processed result of storage CPU (central processing unit);
LED lamp 5 is driven by led drive circuit 6, and in order to give silicon photocell 1 light filling, it is installed in the light-receiving place of silicon photocell 1;
Led drive circuit 6 is connected with CPU (central processing unit) 3, and it is according to the instruction driving LED lamp 5 of CPU (central processing unit) 3;
Display screen 7, display screen 7 is connected with CPU (central processing unit) 3.
Use of the present utility model is as described below:
The pixel parameter weighting standard value of the weighted of storage process in advance in storer 4, for example, the LED luminous flux 50001m up to standard on the liquid crystal display, the weighting standard value is made as 90001m, supposes that weighted value wherein is 2000lm.
Obtain the optical parameter of the LED that detects pixel then by silicon photocell 1, as luminous flux 50001m, simultaneously by CPU (central processing unit) 3 controls, adjust the additional light of LED lamp on the hand-held detector step by step, luminous flux as LED lamp 5 strengthens its luminous flux step by step by 10001m, 1500lm, 2000lm, 25001m, 30001m etc. in the identical time, LED lamp 5 is standard lamps, and its rank luminous point parameter all is stored in the storer 4, calls contrast for CPU (central processing unit).
In testing process, additional light adds that the parameter of the light of pixel adds that weighting parameter to conformance with standard value can finish this luminous point and detect.As: it is logical that the pixel LED on the liquid crystal sends 50001m light, at this moment, the light of LED lamp 5 is logical, and to adjust to the light of 20001m by CPU (central processing unit) logical, the light that this moment, silicon photocell 1 received leads to 70001m, the light that enters CPU (central processing unit) 3 leads to and is adding the weighted value of 20001m, the light that obtains 90001m is logical, promptly reach weighting standard value 90001m, the light of i.e. judgement this moment LED lamp this moment 5 is logical to be logical with luminous point 2 corresponding light to be measured, the logical 5000lm of being of light by calculating luminous point to be measured judges that the LED of this pixel is qualified.
The purpose that weighted value is set be for the light that prevents luminous point to be measured by causing greatly and can't detect, weighted value can guarantee that the LED of luminous point to be measured can survey in the scope.
The convert optical parameter of LED on the pixel of the power supply parameter of CPU (central processing unit) by the LED lamp of light filling is to reach the purpose of the pixel LED that detects liquid crystal display.Even CPU (central processing unit) LED lamp is closed, finish the detection of this luminous point of display, the photoelectric parameter of LED lamp is promptly by the CPU (central processing unit) record.
The situation of the LED of the luminous point to be measured 2 of adding the process of level for LED lamp 5 and recording of CPU (central processing unit) 3 can be shown to the operator by display screen 7.
Claims (2)
1. but the hand-held detector of a pointwise detection LED-backlit LCD display comprises the silicon photocell that luminous point to be detected is detected, and it is characterized in that also comprising:
The CPU (central processing unit) of hand-held detector is used for deal with data;
Storer is connected with CPU (central processing unit), is used for the storage standards photoelectric parameter, and this photoelectric parameter calls contrast for CPU (central processing unit), and the data processed result of storage CPU (central processing unit);
The LED lamp is driven by led drive circuit, and in order to give the silicon photocell light filling, it is installed in the light-receiving place of silicon photocell;
Led drive circuit is connected with CPU (central processing unit), and it is according to the instruction driving LED lamp of CPU (central processing unit).
2. but pointwise according to claim 1 detects the hand-held detector of LED-backlit LCD display, it is characterized in that also comprising display screen, and display screen is connected with described CPU (central processing unit).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201979581U CN201772992U (en) | 2010-05-20 | 2010-05-20 | Handheld detector capable of conducting point-by-point detection to light-emitting diode (LED) backlighting liquid crystal display (LCD) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201979581U CN201772992U (en) | 2010-05-20 | 2010-05-20 | Handheld detector capable of conducting point-by-point detection to light-emitting diode (LED) backlighting liquid crystal display (LCD) |
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| Publication Number | Publication Date |
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| CN201772992U true CN201772992U (en) | 2011-03-23 |
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| CN2010201979581U Expired - Lifetime CN201772992U (en) | 2010-05-20 | 2010-05-20 | Handheld detector capable of conducting point-by-point detection to light-emitting diode (LED) backlighting liquid crystal display (LCD) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288543A (en) * | 2011-07-28 | 2011-12-21 | 深圳中科光华科技有限公司 | Light-emitting diode (LED) display screen module detection device and method |
| CN103063405A (en) * | 2012-12-18 | 2013-04-24 | 黄山市中显微电子有限公司 | instrument used for testing response speed of liquid crystal display (LCD) product |
| CN103929863A (en) * | 2014-04-30 | 2014-07-16 | 长兴泛亚照明电器有限公司 | LED lamp drive power circuit |
| CN107764516A (en) * | 2017-09-04 | 2018-03-06 | 广东小天才科技有限公司 | Brightness of display screen detection method, device, terminal and storage medium |
| CN110189719A (en) * | 2019-05-30 | 2019-08-30 | 重庆蓝岸通讯技术有限公司 | Built-in LTPS display panel pixel point monitors system |
-
2010
- 2010-05-20 CN CN2010201979581U patent/CN201772992U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288543A (en) * | 2011-07-28 | 2011-12-21 | 深圳中科光华科技有限公司 | Light-emitting diode (LED) display screen module detection device and method |
| CN103063405A (en) * | 2012-12-18 | 2013-04-24 | 黄山市中显微电子有限公司 | instrument used for testing response speed of liquid crystal display (LCD) product |
| CN103929863A (en) * | 2014-04-30 | 2014-07-16 | 长兴泛亚照明电器有限公司 | LED lamp drive power circuit |
| CN103929863B (en) * | 2014-04-30 | 2016-04-13 | 长兴泛亚照明电器有限公司 | A kind of LED driving power circuit |
| CN107764516A (en) * | 2017-09-04 | 2018-03-06 | 广东小天才科技有限公司 | Brightness of display screen detection method, device, terminal and storage medium |
| CN110189719A (en) * | 2019-05-30 | 2019-08-30 | 重庆蓝岸通讯技术有限公司 | Built-in LTPS display panel pixel point monitors system |
| CN110189719B (en) * | 2019-05-30 | 2021-03-02 | 重庆蓝岸通讯技术有限公司 | Built-in LTPS display panel pixel point monitoring system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |