CN203466874U - Automatic LCD test device for mobile phone production line - Google Patents
Automatic LCD test device for mobile phone production line Download PDFInfo
- Publication number
- CN203466874U CN203466874U CN201320413375.1U CN201320413375U CN203466874U CN 203466874 U CN203466874 U CN 203466874U CN 201320413375 U CN201320413375 U CN 201320413375U CN 203466874 U CN203466874 U CN 203466874U
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- mobile phone
- microprocessor
- lcd
- lcd screen
- circuit
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- Mobile Radio Communication Systems (AREA)
Abstract
The utility model discloses an automatic LCD test device for a mobile phone production line. The automatic LCD test device comprises a test host unit and a mobile phone main board unit. The test host unit includes a microprocessor, an ADC detection circuit and a signal locking circuit. The mobile phone main board unit includes a mobile phone processor and an LCD screen. The microprocessor is connected with a communication contact of the mobile phone processor through an ejector pin device, a control signal output end of the mobile phone processor is connected with the LCD screen, one output of the LCD screen is connected with the microprocessor through the signal locking circuit, and the other output of the LCD screen is connected with the microprocessor through the ADC detection circuit. Through automatic control of the microprocessor, the automatic LCD test device can intelligently and efficiently detect poor display of LCDs in the mobile phone production process without manual intervention, thereby greatly improving the production efficiency.
Description
Technical field
The utility model relates to a kind of product tester, and particularly a kind of mobile phone produces line LCD automatic testing equipment.
Background technology
The integrated level of intelligent mobile phone chip is more and more higher at present, function is more and more comprehensive, types of functionality is such as: bluetooth, camera, LCD screen, power management etc., many functions all concentrate in a chips, bring thus master chip area to strengthen, BGA pin becomes close diminishing, and paster difficulty promotes.Meanwhile, the connector pin density of mobile phone and mainboard is also more and more higher, and fraction defective also increases gradually.And the pin of LCD signal is very many, and pin major part is by connector and master chip, if pin has one to go wrong, brings disastrous effect all can to whole mobile phone.Therefore, cell phone mainboard all needed to carry out LCD connecting test before delivering to customer.
Existing LCD test way is that cell phone mainboard is placed in test fixture, fixture connects LCD, test workman manually enters LCD test interface after start, observe successively LCD red, blue, green, go out, bright five sub-interfaces, any sub-interface can not normally show and is defective products and detects.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of mobile phone to produce line LCD automatic testing equipment, this device obtains the state of each signal pins of chip for cell phone by microprocessor control signal lock-in circuit, whether the LCD function of determining cell phone mainboard is normal, and production efficiency improves greatly.
The purpose of this utility model is achieved through the following technical solutions: a kind of mobile phone produces line LCD automatic testing equipment, and it comprises Test Host unit and cell phone mainboard unit, and Test Host unit comprises microprocessor, ADC testing circuit and signal lock circuit; Cell phone mainboard unit comprises handset processes device and lcd screen; Microprocessor is connected with the communication contact of handset processes device by push pin device, the control signal output of handset processes device is connected with lcd screen, the output of lcd screen Yi road is connected with microprocessor by signal lock circuit, and another road output of lcd screen is connected with microprocessor by ADC testing circuit.
Signal lock circuit described in the utility model is connected with the signal pins of lcd screen.
ADC testing circuit described in the utility model is connected with the pin backlight of lcd screen.
The utility model also comprises alarm, and described alarm is connected with microprocessor by bus.
The beneficial effects of the utility model are: automatically complete LCD test, energy efficient detection goes out the LCD occurring in mobile phone production process and shows bad, and can also detection of handset LCD backlight function whether normal, test performance is powerful, in test process, do not need manual intervention, save human cost, and greatly improved production efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of mobile phone produces line LCD automatic testing equipment, and it comprises Test Host unit and cell phone mainboard unit, and Test Host unit comprises microprocessor, ADC testing circuit and signal lock circuit; Cell phone mainboard unit comprises handset processes device and lcd screen; Microprocessor is connected with the communication contact of handset processes device by push pin device, the control signal output of handset processes device is connected with lcd screen, the output of lcd screen Yi road is connected with microprocessor by signal lock circuit, another road output of lcd screen is connected with microprocessor by ADC testing circuit, described signal lock circuit is connected with the signal pins of lcd screen, and described ADC testing circuit is connected with the pin backlight of lcd screen.
The course of work of the present utility model is as follows:
Described main screen of mobile phone is I80 interface, has corresponding signal pins on master chip, from hardware, describes, and signal pins only has 0 or 1 two states;
Particularly, signal lock circuit adopts 74373 integrated circuit (IC) chip to obtain the state of each signal pins, utilizes chip selection signal and the WR write signal line of I80 interface screen compound as locking signal;
Particularly, Test Host is controlled push pin device makes tested mobile phone send AA55 and 55AA signal toward LCD interface, and as the microprocessor of Test Host can obtain identical signal from signal lock circuit, the LCD function of this cell phone mainboard is normal.
Further, the LCD of chip for cell phone output pin output voltage backlight is between 2V ~ 20V, and ADC detects the mode sample by ADC, and when the voltage of acquisition is consistent with voltage default in Test Host software, this test is passed through.
Further, when the detection of signal lock circuit and ADC detect all by time, Test Host by and enter next group LCD of mobile phone and detect, otherwise alarm detects warning.
Claims (4)
1. mobile phone produces a line LCD automatic testing equipment, it is characterized in that: it comprises Test Host unit and cell phone mainboard unit, and Test Host unit comprises microprocessor, ADC testing circuit and signal lock circuit; Cell phone mainboard unit comprises handset processes device and lcd screen; Microprocessor is connected with the communication contact of handset processes device by push pin device, the control signal output of handset processes device is connected with lcd screen, the output of lcd screen Yi road is connected with microprocessor by signal lock circuit, and another road output of lcd screen is connected with microprocessor by ADC testing circuit.
2. a kind of mobile phone according to claim 1 produces line LCD automatic testing equipment, it is characterized in that: described signal lock circuit is connected with the signal pins of lcd screen.
3. a kind of mobile phone according to claim 1 produces line LCD automatic testing equipment, it is characterized in that: described ADC testing circuit is connected with the pin backlight of lcd screen.
4. a kind of mobile phone according to claim 1 produces line LCD automatic testing equipment, it is characterized in that: it also comprises alarm, and described alarm is connected with microprocessor by bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320413375.1U CN203466874U (en) | 2013-07-12 | 2013-07-12 | Automatic LCD test device for mobile phone production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320413375.1U CN203466874U (en) | 2013-07-12 | 2013-07-12 | Automatic LCD test device for mobile phone production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466874U true CN203466874U (en) | 2014-03-05 |
Family
ID=50179211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320413375.1U Expired - Fee Related CN203466874U (en) | 2013-07-12 | 2013-07-12 | Automatic LCD test device for mobile phone production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203466874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010190A (en) * | 2014-05-29 | 2014-08-27 | 东莞市信太通讯设备有限公司 | Method for automatically detecting dead pixels of mobile phone screen before assembling |
| CN112881897A (en) * | 2021-02-23 | 2021-06-01 | 深圳酷赛通信科技有限公司 | Backlight testing method and system of electronic equipment |
-
2013
- 2013-07-12 CN CN201320413375.1U patent/CN203466874U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010190A (en) * | 2014-05-29 | 2014-08-27 | 东莞市信太通讯设备有限公司 | Method for automatically detecting dead pixels of mobile phone screen before assembling |
| CN104010190B (en) * | 2014-05-29 | 2017-01-11 | 东莞市信太通讯设备有限公司 | Method for automatically detecting dead pixels of mobile phone screen before assembling |
| CN112881897A (en) * | 2021-02-23 | 2021-06-01 | 深圳酷赛通信科技有限公司 | Backlight testing method and system of electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150712 |
|
| EXPY | Termination of patent right or utility model |