KR20070045883A - Handy testing apparatus for display module of terminal - Google Patents

Abstract

The present invention relates to an apparatus for inspecting a display module for a portable terminal, and more specifically, for a portable terminal capable of inspecting the performance of a display module installed in a terminal for a promotion for sale of a display module, whether or not there is a defect. It relates to a display module inspection device.

inspection

Description

Display Module Inspection Device for Portable Terminal {Handy Testing Apparatus for Display Module of Terminal}

1 is a block diagram of a display module inspection apparatus for a portable terminal according to the present invention.

2 is a perspective view of a display module inspection device for a portable terminal according to the present invention.

FIG. 3 is a view illustrating a state in which an LCD module, which is a test target, is installed inside the plate because the plate of FIG. 2 is opened from the inspection apparatus.

4 is a cross-sectional view showing a state that the LCD module is fixed on the plate of FIG.

** Explanation of symbols for main parts of drawings **

10: communication unit 50: power input unit

90: external battery power 105: CPLD

110: central processing unit (CPU) 120: I / O voltage stabilizer

130: memory block 150: LCD module connector

170, 290: LCD module 220: plate

230: Display window 240, 260, 270: Connector

300: fixed holder 310: spring

320: support plate 330: floating holder

The present invention relates to a display module inspection apparatus for a portable terminal, and in more detail, to inspect the performance of the display module installed in the terminal such as a mobile phone for the promotion of the display module of the terminal, whether or not defective or not. The present invention relates to a display module inspection device for a portable terminal.

In the process of assembling a terminal such as a mobile phone, there is a process of inspecting an LCD module corresponding to the display unit of the terminal. Conventionally, in the manufacture and assembly process of a terminal such as a mobile phone, a large-scale inspection apparatus installed as part of the manufacturing and assembly line has been uniformly inspected the LCD module corresponding to the display unit of the terminal.

The conventional LCD module inspection equipment is installed inseparably coupled to the assembly, production process line of the terminal, there is a problem that the price is too expensive. In particular, if the need for a separate re-inspection for the LCD module of the terminal already overhauled, there is a problem that re-inspection in the production line, re-inspection in the production line will interfere with the ongoing process.

In addition, there is a need in the industry for the inspection equipment of the portable LCD module for the portable terminal to actually show the performance of the LCD module of the mobile terminal, such as a mobile phone to the consumer for the promotion of selling the LCD module for the terminal, such as a mobile phone.

In addition, the conventional test equipment does not directly support the 18-bit interface for the driver IC for driving the 18-bit terminal of the terminal IC module, it is not possible to test the terminal module of all models There is a problem.

The present invention is devised to meet the need for the promotion of the sale of the LCD module and the need for inspecting the LCD module for the terminal of all models separately from the production, assembly line of the terminal, such as a mobile phone.

The present invention has been made to solve the above problems and is dependent on the production of the terminal, such as a mobile phone, as a part of the assembly line, apart from the inspection of the LCD module of the terminal during the production, assembly process of the terminal, the LCD for the terminal An object of the present invention is to provide a small, low-cost, portable terminal inspection module inspection device for showing the performance of the LCD module to be sold to the buyer of the module.

In addition, the inspection device for inspecting the display module for a portable terminal according to the present invention was to be able to inspect several LCD modules at the same time with one inspection equipment.

In order to achieve the above object, the inspection apparatus for inspecting a portable terminal for a portable terminal according to the present invention is a display module inspection apparatus for a portable terminal.

The inspection device,

A housing in which the inspection device forms a predetermined shape and is a case; And an internal circuit part installed inside the housing, wherein the internal circuit part is

Communication unit 10 for receiving and transmitting data from the outside;

A core block (100) for receiving the data transmitted from the communication unit (10), controlling the overall driving of the inspection tester, and determining an interface;

A memory block 130 connected to the core block 100 and storing sample image data necessary for a test of the display module 170; And

It is connected to the core block 100, and comprises an LCD module connector 150 to be connected to a plurality of display modules 170 to be tested,

The internal circuit portion further includes a power input unit 50 for supplying power,

The core block 100 and the central processing unit 110 is installed with a program for driving the tester for inspection

Receives a control signal from the central processing unit 110, CPLD 105 for extending the width of the received control signal is installed to be connected to each other,

When the display module to be tested has an 18-bit parallel interface, the core central processing unit 110 transmits the data separated in units of 8 bits to the CPLD 105 twice. Finally, two bits of data are transmitted, and the CPLD 105 transmits the 18 bits of data to the LCD module 170 to be tested at a time when the transmission of the 18 bits of data is completed.

The internal circuit unit is connected to the core block 100, I / O voltage stabilizer 120 to check the voltage level of the driver IC of the LED module 170 to be tested to match the voltage level of the data to be transmitted (120) ),

The power input unit 50,

A core power generator (65) for supplying and regulating power to the memory block (170) and the core block (100);

A transformer 70 and an LCD module power generator 75 for regulating and supplying power to the LCD module 170 under test; And

A transformer 80 and a backlight power generator 85 for adjusting and supplying power to the backlight power of the LCD module 170 to be tested;

The core block 100 and the central processing unit 110 is installed with a program for driving the tester for inspection

CPLD 105 for receiving the control signal from the central processing unit 110, and expands the width of the received control signal is installed to be connected to each other,

The communication unit 10 may include: an RS 232 communication unit 20 which is a path for transmitting a program from the outside to the core CPU 110 or transmitting image data to be stored in the memory block 130; And

And a JTAG converter 40 connected to the CPLD 105 and a parallel communication unit 30 which is a connection device for transmitting and receiving a program programmed in the CPLD 105 from the outside and the parallel communication unit 30. ,

On the upper plane of the housing, a plate 220 on which the LCD module to be inspected is located is installed to be detachable from the housing.

The plate 220 is formed with an open display window 230 at a portion where the LCD module to be inspected is located, and one fixing holder 300 is provided at each side of the display window 230. It is fixedly installed on the plate 220, a pair of flow holders 330 for supporting the LCD module to be the inspection object is disposed inside the pair of fixed holder 300, each flow holder 330 is each The tension is fixedly connected to the fixing holder by the same spring 310,

The support plate 320 is installed on the plate 220 above the flow holder 330, and the tension springs 325 are installed at both edge portions of the support plate 320, which are in contact with the plate 220. By the tension of the tension spring, the support plate 320 is characterized in that configured to press the upper portion of the flow holder 330.

Advantages, features and preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a block diagram of an inspection apparatus for inspecting a display module for a portable terminal according to the present invention.

As shown in FIG. 1, the inspection device for inspecting a display module for a portable terminal according to the present invention is connected to an external personal computer 5 to perform a data communication with a communication unit 10, and main components of FIG. 1. The power supply unit 50 for supplying power to the LCD module 170 for the terminal to be tested, the overall driving of the inspection device for inspecting the display module for a portable terminal according to the present invention, the core to enable to determine the interface The block 100, the I / O voltage stabilizer 120, the memory block 130, which serves to permanently store the sample image required for the test of the LCD module 170 for a terminal, the LCD module for a plurality of terminals (170) ) And an external burr that is a button that can directly control the operation of the inspection module according to the present invention and the module module connector 150 and the terminal that is directly connected to each It is comprised by the tongue part 115.

When the respective components of the inspection device for inspecting a display module for a portable terminal according to the present invention are divided.

The communication unit 10 according to the present invention is connected to a personal computer 5 such as a PC, and is configured to include an RS 232C communication unit 20 and a parallel communication unit 30. The RS 232C communication unit 20 of the communication unit 10 transmits a program input from the personal computer 5 to the core CPU 110, and monitors the state of the inspection apparatus according to the present invention as necessary. It also supports the function to perform, and transmits the image data to be stored in the flash memory (Flash Memory) 135 of the inspection apparatus according to the present invention. The parallel communication unit 30 transmits the updated program to the CPLD 105 using the personal computer 5 or the like as the input device of the updated program through the JTAG converter 40.

The power input unit 50 according to the present invention includes an external power connector 60 and an external battery power source 90, the external power connector 60 is a core power generator (65), an LCD module for a terminal A transformer 70 and an LCD module power generator 75 for adjusting the power supply of the 170, a transformer 80 and a backlight power generator 85 for adjusting the backlight power of the LCD module for the terminal are configured.

Since the inspection apparatus according to the present invention needs to show the performance of the LCD module in the office, company, etc., where the user is directly carried by the user for promotion for sale, the inspection apparatus according to the present invention is provided to the external battery power source 90. Can be powered by

The power required by the Complex Programmable Logic Device (CPLD) block 105 and the memory block 130 according to the present invention is 3.3V, and the power required by the core CPU block 110 is 5V. Two power sources are supplied through the Core Power Generator (65).

In the case of the LCD module 170 installed in a terminal such as a mobile phone, the difference between the driving voltage and the backlight voltage of the driver IC required for each model is configured to be variable from 2V to 9.5V. Although not shown in FIG. 1, a voltmeter and a dial for adjusting power may be installed in order to simplify identification and adjustment of power from the outside of the inspection apparatus according to the present invention.

Core block (100) according to the present invention is composed of a central processing unit (CPU) (110) and CPLD (Complex Programmable Logic Device) (105).

Core CPU 110 according to the present invention is installed a program for driving the test apparatus according to the present invention, the control signal and flash memory (Flash Memory) for different LCD driver IC (LCD Driver IC) It is in charge of the control of (135). In addition, the LCD module 170 controls a portion requiring direct control, for example, backlight on / off, LED (LED) control, motor driving, speaker operation, and the like.

The control signal output from the core CPU 110 of the present invention is transmitted to each driving element through the CPLD 105.

The main operation of the CPLD 105 of the present invention is to transmit the control signal of the core CPU 110 and to expand the width of the data bus.

The memory block 130 according to the present invention is composed of a flash memory 135.

The I / O voltage stabilizer 120 according to the present invention is safe to prevent an abnormality in the test because the I / O bus voltage input to the driver IC differs from the driver IC driving voltage. Device. The voltages of all data buses are automatically set equal to the values output from the LCD module power generator 75 of the power input unit 30.

The LCD module connector 150 according to the present invention is a component to which the LCD module 170 for the terminal to be tested is inserted and connected, and is composed of a driver IC power supply 155 and a backlight power supply 160. Two or more LCD module connector portions 150 are provided.

As described above, the inspection device for inspecting a portable terminal for a portable terminal according to the present invention can test two or more dual LCD modules at the same time or test two or more kinds of terminal LCD modules 170 with one device. It is configured to be.

The external button unit 115 according to the present invention is a button to externally control the operation of the inspection apparatus according to the present invention.

In addition, the tester according to the present invention is connected to an external personal computer 5 to transmit a new logic program to the CPLD 105 via an external input device such as a personal computer 5, the central processing unit 110 The new control program is transmitted to the control block, and the test image data is transmitted to the memory block 130.

Hereinafter will be described in detail a driving method of the inspection device for inspecting a display module for a portable terminal according to the present invention.

First, the process of storing the image data output from the personal computer 5 in the flash memory 135 of the memory block 130, if the sample image data is transmitted to the communication unit 20 of the RS 232C of the communication unit 10 The core CPU 110 of the core block 100 separates the data into R, G, and B, and reconfigures the data into a combination suitable for the LCD module 170 for the terminal to be tested. The reconstructed data is then transmitted to the CPLD 105. The CPLD 105 separately transmits the data to the three flash memories 135 in a manner designated by the core CPU 110. Thereafter, data is stored in the flash memory 135 of the memory block 130.

The process of transmitting the stored data to the LCD module 170 is as follows.

First, when an input of a button for transmitting sample data is received from the external button unit 115, the driver IC of the LCD module is driven in the core CPU 110 of the core block 100. Information (hereinafter referred to as "Initial Code") is transmitted to the CPLD 105.

This initial code has various data interfaces. Representatively, in the case of an 18-bit parallel interface (Parallel Interface) as an example, the driving process will be described. Once, due to hardware limitations of the core CPU 110, only one bit can be transmitted in 8-bit units. This would make it impossible to transfer the initial code and GRAM data of the 18-bit parallel interface.

It is the CPLD 105 that is used to solve this problem. The core central processing unit (110) first transmits data separated in units of 8 bits. In the case of 18-bit interface, the lower bits are sequentially transmitted as 0 to 7 bits, 8 to 15 bits, and 16 to 17 bits. When data is transmitted from the core CPU 110, the CPLD 105 transmits the transmitted data to a multiplexer (hereinafter, referred to as a "mux") composed of internal logic. After saving, the output off bit is cleared and output as 18 bit data at a time.

This method is mainly used to transmit the initial code (Initial Code) of the LCD module when the core central processing unit 110 needs to transmit data directly to the terminal CD module 170. The 18-bit data called as described above is transmitted to the LCD module 170 via the mux of the CPLD 105.

When the image data stored in the flash memory 135 of the present invention is read and transmitted to the LCD module 170, a method different from the above is used.

As described above, the data stored in the flash memory 135 is stored in a form suitable for the LCD module 170. Data stored in each flash memory 135 is called by the Core CPU 110.

Instead of performing a logical operation on the data of the flash memory 135 called by the central processing unit 110, only the count of the image pixel data stored in the flash memory 135 and the format of the image data to be called are specified.

Looking at the process of finally transmitted image data is transmitted to each of the LCD module 170 connected to the LCD module connector 150 as follows.

All image data are converted to suit the voltage level of the driver IC (IC) of the LCD module 170 before being transmitted. It is the I / O Voltage Stabilizer 120 that serves to match the voltage. The I / O voltage stabilizer 120 of the present invention also serves to determine whether to input or output data. The image data once passed through the I / O voltage stabilizer 120 is commonly transmitted to the port of the LCD module connector 150.

However, since the chip select signal has a separate control bit, the different CD modules 170 may be displayed on five ports.

2 is a perspective view of a display module inspection device for a portable terminal according to the present invention.

2, the upper view is a perspective view of the inspection apparatus according to the present invention as viewed obliquely from the front, and the lower view is a rear view of the inspection apparatus of the present invention.

On the front of the inspection apparatus according to the present invention, the external button 210, the plate 220 is disposed on the inside of the LCD module 290 to be inspected, the image display state of the LCD module 290 to be inspected The display window 230 is installed. The external buttons 210 of the present invention are electrically connected to the external button portion 115 of FIG. Input of a signal through the external buttons 210 allows the image data to be displayed to be continuously displayed, rotated, or displayed on another image through the LCD module 290 stored in the memory block 130. .

Two connectors 240 are installed on the back of the tester according to the present invention, and the two connectors 240 are connected to the communication unit 10 of FIG. 1 as a connector part connected to an external personal computer 5. do.

Reference numeral 250 denotes a power switch.

FIG. 3 is a view illustrating a state in which an LCD module, which is a test target, is installed inside the plate because the plate of FIG. 2 is opened from the inspection apparatus. 4 is a cross-sectional view showing a state that the LCD module is fixed on the plate of FIG.

3 and 4, a pair of fixed holder 300 is installed on the inner surface of the plate 220 according to the present invention is fixed to the plate 300, a pair of flow holder of the 'b' shape 330 are installed to be connected by the fixed holder 300 and the spring 310, respectively. The support plate 320 is installed above the center portion based on the position where the pair of fixing holders 300 are installed. On both side edges of the support plate 320, spring portions 325 provided with pig tail tension springs, respectively, are provided. The tension of the tension spring causes the support plate to remain closed at all times above the flow holder 330.

In order to place the LCD module 290 to be inspected on the plate 220 of the inspection apparatus according to the present invention, the user opens the support plate 320 to the upper portion of the plate 220 by hand, and each of the flow holders. When the 330 is spread outward and the LCD module 290 is positioned inside the flow holder 330, the LCD module 290 is positioned at the center. It is assumed that each of the springs 310 has the same tension.

Then, when the support plate 320 is opened, the LCD module 290 is brought into close contact with the plate 220 by the tension of the tension spring.

After the LCD module 290 to be inspected is firmly positioned to be in close contact with the display window 230 portion of the plate 220, as shown in FIG. 2, the plate 220 may be fixed to the inspection apparatus and used.

Reference numeral 280 denotes a connection line of the LCD module, the connector 270 is installed at the end of the connection line 270, the LCD module 290 of the terminal to be inserted into the connector 260 installed inside the inspection apparatus of the present invention to be tested Is electrically connected. The connectors 260 are installed in connection with the LCD module connector 150 of FIG. 1.

The display module inspection device for a portable terminal according to the present invention has the following remarkable effects.

(1) Ease of movement: Except for the size of the enclosure, the inspection device is 16Cm x 13Cm, and the enclosure material is made of plastic, so it is easy to carry.

(2) Variety of functions: It is a general-purpose promotional equipment that can be applied to most existing LCD modules for terminals by applying the universality of the inspection device as it is.

(3) Efficient enclosure: The inspection device is separated from the upper part of the enclosure and can be replaced with the top plate that fits the size of the window of the LCD module. Can be promoted.

(4) Reasonable power management: You can use external power or battery according to the situation.

While the preferred embodiments of the present invention have been described using specific terms, such descriptions are for illustrative purposes only, and it is understood that various changes and modifications may be made without departing from the spirit and scope of the following claims. Should be done.

Claims (7)

A display module inspection device for a portable terminal, The inspection device, A housing in which the inspection device forms a predetermined shape and is a case; And It is composed of an internal circuit unit installed inside the housing, The internal circuit portion, Communication unit 10 for receiving and transmitting data from the outside; A core block (100) for receiving the data transmitted from the communication unit (10), controlling the overall driving of the inspection tester, and determining an interface; A memory block 130 connected to the core block 100 and storing sample image data necessary for a test of the display module 170; And It is connected to the core block 100, and comprises an LCD module connector 150 to be connected to a plurality of display modules 170 to be tested, On the upper plane of the housing, a plate 220 on which the LCD module to be inspected is located is installed to be detachable from the housing. The plate 220 is formed with an open display window 230 at a portion where the LCD module to be inspected is located, and one fixing holder 300 is provided at each side of the display window 230. It is fixedly installed on the plate 220, a pair of flow holders 330 for supporting the LCD module to be the inspection object is disposed inside the pair of fixed holder 300, each flow holder 330 is each The tension is fixedly connected to the fixing holder by the same spring 310, A support plate 320 is installed on the plate 220 above the flow holder 330, and a tension spring 325 is installed at both edge portions of the support plate 320, which are in contact with the plate 220. And the support plate (320) is configured to always press the upper portion of the flow holder (330) by the tension of the tension spring. The method of claim 1, The internal circuit unit further comprises a power input unit (50) for supplying power to a plurality of display module inspection tester. The method of claim 1, The core block 100 and the central processing unit 110 is installed with a program for driving the tester for inspection Receiving a control signal from the central processing unit 110, CPLD (105) for expanding the width of the received control signal is installed to be connected to each other, characterized in that the display module inspection device for a portable terminal. The method of claim 3, wherein When the display module to be tested has an 18-bit parallel interface, the core central processing unit 110 transmits the data separated in units of 8 bits to the CPLD 105 twice at once. 2 bits of data, and the CPLD 105 transmits the 18 bits of data to the LCD module 170 to be tested at a time when the 18 bits of data is completed. Display module inspection device for terminals. The method of claim 1, The internal circuit unit is connected to the core block 100, I / O voltage stabilizer 120 to check the voltage level of the driver IC of the LED module 170 to be tested to match the voltage level of the data to be transmitted (120) Display module inspection apparatus for a portable terminal further comprising a). The method of claim 2, The power input unit 50, A core power generator (65) for supplying and regulating power to the memory block (170) and the core block (100); A transformer 70 and an LCD module power generator 75 for regulating and supplying power to the LCD module 170 under test; And And a transformer (80) and a backlight power generator (85) for controlling and supplying backlight power of the LCD module (170) to be tested. According to claim 1, The core block 100 and the central processing unit 110 is installed with a program for driving the tester for inspection CPLD 105 for receiving the control signal from the central processing unit 110, and expands the width of the received control signal is installed to be connected to each other, The communication unit 10 includes an RS 232 communication unit 20 which is a path for transmitting a program from the outside to the core processing unit 110 or transmitting image data to be stored in the memory block 130; And It includes a parallel communication unit 30 and a JTAG converter 40 is connected to the parallel communication unit 30 and the CPLD 105 connected to the parallel communication unit 30 to receive and transmit a program to the CPLD 105 to be transmitted from the outside Display module inspection apparatus for a portable terminal, characterized in that.

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