KR20060016676A - Automatic dome tester for regulating the tension of metal dome and method thereof - Google Patents

Abstract

The present invention installs a driver driver to check the image pattern of the LCD of the mobile phone to the pattern generator and drive through the PCI to generate the LCD pattern and LCD through the interaction of the CPU and PCI in accordance with the result detected from the LCD pattern to be inspected The present invention relates to an automatic testing device for a mobile phone LCD pattern and a method for automatically checking whether a pattern is defective. In a testing device capable of inspecting a mobile phone LCD pattern, a graphic image is transmitted from a PC 10 through a parallel port 12. A pattern generator 14 for generating a pattern; A PCI (peripheral component interconnect) 100 which downloads a graphic pattern from the pattern generator 14 and provides a data path for transferring data for driving the test driver; An inspection subject LCD (50) which writes the graphic pattern from the PCI (100) as data and control signals and feeds back to the PCI (100) whether the written graphic pattern signal carries as a normal signal; A central processing unit (CPU) for processing the graphic pattern encoded from the AD converter 22 and the DA converter 24 which receives the test signal from the test subject LCD 50 and outputs the digital graphic pattern signal through the PCI 100. , 200); A voltage regulator 26 for lowering a difference voltage between a discharge voltage or a charge voltage output from the test target LCD 50 as a test signal to maintain the load voltage within an allowable range; Inspection that provides a bypass signal of buzzer, vibration, and sound to the PCI 100 by directly connecting the CPU and the inspection target LCD 50 through an RS232C communication interface 26 providing a data path. A function circuit 28; And the CPU and the RAM 210, the ROM 221, and the EEPROM 230 are connected to each other to output a bypass signal of buzzer, vibration, and sound, and receive a control command from the CPU 200. The VFD display 240 which shows the driving state of the pattern of the said test subject LCD 50 is provided.

PCI, Cellphone LCD Pattern, Testing Device

Description

Automatic dome tester for regulating the tension of metal dome and method             

1 is a block diagram illustrating a testing apparatus for automatically checking the state of each mobile phone LCD pattern according to the present invention.

FIG. 2 is a flowchart showing the test apparatus of the present invention in FIG. 1.

Explanation of symbols on the main parts of the drawings

14: LCD pattern generator 22: AD converter

24: DA converter 26: regulator

28: RS232C 50: LCD Pattern

100: PCI 150: VFD Display

200: CPU 210,220, 230: Memory

The present invention relates to an apparatus for testing an LCD pattern to be installed in a mobile phone product to be tested and a method thereof. More specifically, for example, an LCD driver is installed by installing a driver to inspect a graphic image pattern of an LCD of a mobile phone. The present invention relates to an automatic testing apparatus for a mobile phone LCD pattern and a method for automatically checking whether an LCD pattern is defective through the interaction between the CPU and the PCI according to the pattern value generated by the generator.

Recently, in the portable terminal (Personal Digital Assistant, hereinafter referred to as PDA), which has miniaturized and multi-function devices, devices that examine the unique function of LCD pattern color, foreign matter, and operating current in cellular phones, mobile phones, etc. It is proposed. In addition, the LCD used as a mobile phone display device requires a precise inspection in the production process because one pixel is composed of semiconductors.

The test equipment verifies that the condition is operating properly, consistent with normally accepted reference values, such as the electrical characteristics of the signal's voltage, frequency, timing, common physical interconnect characteristics (mechanical characteristics), and logical characteristics such as commands and responses.

In this way, the inspection device that checks whether the mobile phone works properly is placed on the table to be tested by the operator according to various mobile phone models with the respective testing options such as voltage, current buzzer, vibration, and sound. Inspected using a separate terminal.

This inspection method takes a lot of inspection time because the operator selects the testing option of more than a dozen mobile phone products that are given each unique function, and then connects and adjusts the corresponding terminals in sequence and fatigues for each work unit of the corresponding function. May be cumulative, so the corresponding part must be replaced and reassembled at each inspection of the model.

In addition, there is a device that exclusively inspects the color, foreign matter, and current of each mobile phone LCD pattern, which may damage the LCD pattern when changing parameters to inspect the inside of the LCD pattern. Inevitably, a lot of working time is required to modify the dedicated inspection apparatus, and furthermore, there is a problem that the labor cost is excessively increased due to the decrease in work efficiency.

In order to solve the problems of the prior art, an object of the present invention is to install a drive driver for inspecting the image pattern of the LCD of the mobile phone in the pattern generator and drive through the PCI to generate the LCD pattern and the result detected from the LCD pattern to be inspected The present invention provides an automatic testing apparatus and method for an LCD pattern of a mobile phone which automatically checks whether an LCD pattern is defective through the interaction between the CPU and the PCI according to the value.

The present invention is to achieve the above object, the testing device for inspecting the mobile phone LCD pattern, In the testing device that can inspect the mobile phone LCD pattern,

A pattern generator 14 for generating a graphic image pattern from the PC 10 through the parallel port 12;

A PCI (peripheral component interconnect) 100 which downloads a graphic pattern from the pattern generator 14 and provides a data path for transferring data for driving the test driver;

An inspection subject LCD (50) which writes the graphic pattern from the PCI (100) as data and control signals and feeds back to the PCI (100) whether the written graphic pattern signal carries as a normal signal;

A central processing unit (CPU) for processing the graphic pattern encoded from the AD converter 22 and the DA converter 24 which receives the test signal from the test subject LCD 50 and outputs the digital graphic pattern signal through the PCI 100. , 200);

A voltage regulator 26 for lowering a difference voltage between a discharge voltage or a charge voltage output from the test target LCD 50 as a test signal to maintain the load voltage within an allowable range;

Inspection that provides a bypass signal of buzzer, vibration, and sound to the PCI 100 by directly connecting the CPU and the inspection target LCD 50 through an RS232C communication interface 26 providing a data path. A function circuit 28;

The CPU and the RAM 210, the ROM 221, and the EEPROM 230 are interconnected to output a bypass signal of buzzer, vibration, and sound, accept a control command of the CPU 200, and check the And a VFD display 240 indicating a driving state of the pattern of the target LCD 50.

In addition, the testing method for inspecting the mobile phone LCD pattern of the present invention,

Generating a graphic image pattern by the pattern generator 14 from the PC 10 through the parallel port 12 (S 10);

(S 12) providing a data path through the PCI (peripheral component interconnect) 100 to download and transfer data by driving an inspection driver from the pattern generator 14;

Writing the graphic pattern received from the PCI 100 as a data and control signal by the cellular phone LCD 50 and feeding back to the PCI 100 whether the written graphic pattern signal carries a normal signal (S 14). ;

Processing the encoded graphic pattern from the A-D converter 22 by receiving a voltage signal from the LCD 50 to be inspected by the central processing unit (CPU) and converting it into a digital graphic pattern signal (S 16);

Converting through the DA converter 24 outputting the analog voltage signal by the CPU 200 (S 18);

Adjusting the voltage by the voltage regulator 26 to drop the difference voltage with the discharge voltage or the charge voltage to the inspection target LCD 50 to maintain the load voltage within an allowable range (S 20);

The CPU 100 and the mobile phone LCD 50 are directly connected to each other using the test function circuit 28 through an RS232C communication interface 26 to transmit a bypass signal of buzzer, vibration, and sound to the PCI 100. Providing step (S 22);

Connects the CPU with RAM 210, ROM 221, and EEPROM 230, outputs a bypass signal of buzzer sound, vibration, and sound, accepts a control command of the CPU 200, and accepts the mobile phone LCD. A VFD display indicating a driving state of the pattern of 50 is included (S 24).

Hereinafter, the present invention will be described more clearly with reference to the accompanying drawings of FIGS. 1 and 2 as follows.

1 is a block diagram illustrating an automatic testing apparatus and method of each mobile phone LCD pattern according to the present invention. FIG. 2 is a flowchart partially illustrating the essential operating portion of the invention in FIG.

As shown in FIG. 1, the automatic testing apparatus for a mobile phone LCD pattern according to the present invention is a pattern generator that downloads a predetermined graphic pattern by driving an inspection driver in a final inspection line of an LCD used in a mobile phone and generates a graphic image pattern. (LCD Pattern Generator 14); A PCI (peripheral component interconnect, 100) for providing a data path from the pattern generator (14) supplied from the PC (10); A central processing unit (CPU) (200) for processing the encoded graphic pattern from the A-D converter 22 which receives and converts the voltage signal from the cellular phone LCD 50; A digital analog converter 24; A voltage regulator 26 for maintaining the load voltage within an allowable range; An inspection function circuit (28) for providing an information bypass signal of an inspection object to the PCI (100) via an RS232C communication interface (26); RAM 210, ROM 221 and EEPROM 230, and VFD display 240.

Here, the PCI 100 provides a data path for downloading the graphic pattern from the pattern generator 14 by driving an inspection driver and transferring the data at high speed.

In addition, the mobile phone LCD 50 writes the graphic pattern received from the PCI 100 as the data and control signal by driving the test driver, and tells the PCI 100 whether the written graphic pattern signal carries a normal signal. By feedback.

In addition, between the central processing unit (CPU, 200) and the PCI (100), the AD converter 22, DA converter 24, the inspection target to change the graphic pattern of the continuous variable on the inspection target LCD (50) of the mobile phone A voltage regulator 26 for maintaining the load voltage of the LCD 50 within an allowable range, an RS232C communication interface 26 for transferring graphic pattern data of the inspection target LCD 50, and the central processing unit (CPU) And a test function circuit 30 which directly connects to and provides the bypass signal of the buzzer, vibration, sound, and backlight to the PCI 100.

The RAM 210 is a device called a flip-flop, which is a structure in which the output of the self is returned to the input. In fact, when a high 1 is inserted and a low 0 is inserted, 0 is 0 when a power difference is divided into electric voltages. When it comes out, it keeps 1 by supplying high 1's output as input while continuing to supply power.

The ROM 220 is a storage device that always stores certain data regardless of input or power, and is simple, large in density, and permanently supports data contents.

The pattern generator 14 may download a driver driver program of an image pattern loaded by an operator and store at least one or more image patterns, for example, about 50-100 graphic patterns as an image pattern of an LCD of a mobile phone. It includes an SRAM (16) to allow the operator to mask the presence or absence of defects. Here, the SRAM 16 RAM is a memory in which the stored graphic pattern contents remain intact while power is supplied.

The PCI 100 is a type of a local bus that connects directly with a central processing unit (CPU, 200) to provide a data path for transferring data at high speed, and the PCI 100 is a bus with the CPU 200. Since the RS232C interface 28 is interposed therebetween, it does not depend on the type of the CPU 200. Therefore, even if the type of the CPU 200 is different, it can be connected to any CPU. The bus of the PCI 100 is a 32-bit or 64-bit bus and the operating frequency is the same as the operating frequency of the CPU 200.

The EEPROM (Electrically Erasable Programmable ROM) 30 is a memory capable of erasing or storing information by an electric signal.

The regulator 26 matches these conditions for the electrical signals and physical interconnect characteristics of the voltages, frequencies, and timings that make up the parameter checks coming out of the LCD graphic image pattern for interconnection.

In the following, the present invention will be described the operation principle in consideration of the role that the mobile phone functions as a substitute for this equipment.

Figure 2 is a flow chart partially showing the operation part of the method using the automatic testing field of the mobile phone LCD pattern according to the present invention.

The present invention generates a graphic image pattern by the pattern generator 14 through the parallel port 12 from the PC 10 in the final inspection line of the LCD used in the mobile phone (S 10).

Thereafter, a graphic pattern is downloaded from the pattern generator 14 by driving an inspection driver, and a data path for transferring data at high speed is provided through a PCI (peripheral component interconnect) 100 (S 12).

The graphic pattern received from the PCI 100 is written by the cellular phone LCD 50 as data and control signals, and the PCI 100 feeds back whether the written graphic pattern signal carries a normal signal (S 14). .

The CPU 200 processes the encoded graphic pattern from the A-D converter 22 which receives the voltage signal from the cellular phone LCD 50 and converts it into a digital graphic pattern signal (S 16).

The central processing unit (CPU) 200 converts the digital voltage signal to generate an analog voltage signal through the DA converter 24 (S18).

The voltage is adjusted by the voltage regulator 26 so that the load voltage is kept within the allowable range by dropping the difference voltage with the discharge voltage or the charge voltage (S20).

By using the test function circuit 28 through the RS232C communication interface 26 to provide a data path, the CPU and the mobile phone LCD 50 are directly connected to each other to bypass the buzzer, vibration and sound bypass signals. Provided to the PCI (100) (S 22).

RAM 210, ROM 221 and EEPROM 230 are then connected to the central processing unit (CPU) to output a bypass signal of buzzer, vibration and sound, accept the control command of the CPU 200 and check the The VFD display indicating the driving state of the pattern of the target LCD 50 is displayed (S24).

The parameters of the allowable LCD test pattern store in the memory 220 rated options defined according to various manufacturers' models. In the present embodiment, in the case of a dual phone (Main & Sub), the desired LCE pattern is determined by the number of test patterns, the test time between neighboring patterns, and data. Therefore, it is possible to save and set each of the 10 model drive programs, thereby improving the method and time of the inspection. At this time, the controller 26 adjusts the parameters of the LCD test pattern out of the allowable range written in the PCI 40 under the control of the CPU 200 by deriving an allowable value through the determination.

 In addition, it may be desirable to automatically determine by the speaker, the buzzer, the vibration motor, the backlight, the LED, and the like as the allowable option of the parameter for the inspection target LCD 50 of the LCD inspection pattern. It is possible to judge good or bad according to the set inspection range by measuring current while driving LCD. Check the other option inspection items after setting according to each model.

The automatic testing device for each mobile phone LCD pattern according to the present invention and a method for driving the LCD driver and options in the method, and selects (VDD, VEE, BATT) of the three to supply to the PCI (100). The PCI 100 stores a program for driving the LCD 50 to be inspected and writes the program to the LCD 50 to be inspected.

In addition, the graphic image pattern downloaded from the PC 10 to the LCD pattern generator 14 is written to the inspection target LCD 50. Accordingly, the LCD test pattern is displayed by measuring the current when the LCD is driven and the defective good quality is determined.

The output state of the PCI 240 is displayed through the VFD display 240.

The memory 220 stores a program in which an operation state changes according to a temporal change of a predetermined allowable target value for driving the microcomputer 210, and includes a memory unit implemented using a ROM or an EEPROM memory.

In addition, the regulator 260 receives the control command of the CPU 200, and simultaneously drives the inspection patterns of the at least one inspection target LCD in a simultaneous operation. Therefore, when the user sets the graphic image pattern value through the pattern generator 14 through the PC 10 according to the manufacturer's mobile phone model, the parameter signal value allowable in the ROM memory 220 is stored and stored by the CPU 200. The signal value is transmitted through the function circuit 30.

As the above processes are continuously and sequentially and collectively, automation is possible.

Therefore, as described in detail above, the present invention installs a driver driver for inspecting the image pattern of the LCD of the mobile phone in the pattern generator and drives it through PCI to generate the LCD pattern and the CPU according to the result value detected from the inspection target LCD pattern. Through the interaction between PCI and PCI, the LCD pattern can be automatically inspected for defects, and precise measurement of good and defective products can be maintained to maintain the allowable pressure range to maintain uniformity of quality.

In addition, when changing the parameter by the driver that drives the LCD pattern of the mobile phone, mechanical work can be used to quickly change any mobile phone model without changing the inspection elements required for each LCD pattern. In addition, it is possible to unmann the inspection process while easily managing the trouble-free process and managing bad data.

Embodiment of the present invention is for the purpose of illustration, those of ordinary skill in the art, modifications, changes, replacements will be possible through the technical scope illustrated in this specification.

Claims (5)

In the testing device that can inspect the mobile phone LCD pattern, A pattern generator 14 for generating a graphic image pattern from the PC 10 through the parallel port 12; A PCI (peripheral component interconnect) 100 which downloads a graphic pattern from the pattern generator 14 and provides a data path for transferring data for driving the test driver; An inspection subject LCD (50) which writes the graphic pattern from the PCI (100) as data and control signals and feeds back to the PCI (100) whether the written graphic pattern signal carries as a normal signal; A central processing unit (CPU) for processing the graphic pattern encoded from the AD converter 22 and the DA converter 24 which receives the test signal from the test subject LCD 50 and outputs the digital graphic pattern signal through the PCI 100. , 200); A voltage regulator 26 for lowering a difference voltage between a discharge voltage or a charge voltage output from the test target LCD 50 as a test signal to maintain the load voltage within an allowable range; Inspection that provides a bypass signal of buzzer, vibration, and sound to the PCI 100 by directly connecting the CPU and the inspection target LCD 50 through an RS232C communication interface 26 providing a data path. A function circuit 28; And, The CPU and the RAM 210, the ROM 221, and the EEPROM 230 are interconnected to output a bypass signal of buzzer, vibration, and sound, accept a control command of the CPU 200, and check the Automatic testing apparatus for a mobile phone LCD pattern comprising a; VFD display 240 showing the driving state of the pattern of the target LCD (50). The method of claim 1, The pattern generator 14 downloads a driver driver program of an image pattern loaded by an operator and forms an about 50-100 graphic pattern as an image pattern for storing at least one or more image patterns. Automatic testing device for a mobile phone LCD pattern comprising a. The method of claim 1, Between the central processing unit (CPU) 200 and the PCI (100), the AD converter 22, DA converter 24, the inspection target LCD to change the graphic pattern of the continuous variable to the inspection target LCD (50) of the mobile phone A voltage regulator 26 for maintaining a load voltage of 50 within an allowable range, an RS232C communication interface 26 for transferring graphic pattern data of the LCD 50 to be inspected, and a central processing unit (CPU); Automatic testing device for a mobile phone LCD pattern comprising a test function circuit 30 for directly connecting the bypass signal of the buzzer, vibration, sound and backlight to the PCI (100). In the testing method for inspecting the mobile phone LCD pattern, Generating a graphic image pattern by the pattern generator 14 from the PC 10 through the parallel port 12 (S 10); (S 12) providing a data path through the PCI (peripheral component interconnect) 100 to download and transfer data by driving an inspection driver from the pattern generator 14; Writing the graphic pattern received from the PCI 100 as a data and control signal by the cellular phone LCD 50 and feeding back to the PCI 100 whether the written graphic pattern signal carries a normal signal (S 14). ; Processing the encoded graphic pattern from the A-D converter 22 by receiving a voltage signal from the LCD 50 to be inspected by the central processing unit (CPU) and converting it into a digital graphic pattern signal (S 16); Converting through the DA converter 24 outputting the analog voltage signal by the CPU 200 (S 18); Adjusting the voltage by the voltage regulator 26 to drop the difference voltage with the discharge voltage or the charge voltage to the inspection target LCD 50 to maintain the load voltage within an allowable range (S 20); The CPU 100 and the mobile phone LCD 50 are directly connected to each other using the test function circuit 28 through an RS232C communication interface 26 to transmit a bypass signal of buzzer, vibration, and sound to the PCI 100. Providing step (S 22); And, Connects the CPU with RAM 210, ROM 221, and EEPROM 230, outputs a bypass signal of buzzer sound, vibration, and sound, accepts a control command of the CPU 200, and accepts the mobile phone LCD. And a VFD display (S 24) indicating a driving state of the pattern of (50). The method of claim 1, In the generating of the graphic image pattern (S 10), the driver driver program of the image pattern loaded by the operator by the SRAM 16 is downloaded to form about 50-100 graphic patterns as the image pattern. Testing method of mobile phone LCD pattern.

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