KR101627074B1 - Device for testing transmittance of printed icon pattern - Google Patents

Device for testing transmittance of printed icon pattern Download PDF

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Publication number
KR101627074B1
KR101627074B1 KR1020150165630A KR20150165630A KR101627074B1 KR 101627074 B1 KR101627074 B1 KR 101627074B1 KR 1020150165630 A KR1020150165630 A KR 1020150165630A KR 20150165630 A KR20150165630 A KR 20150165630A KR 101627074 B1 KR101627074 B1 KR 101627074B1
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KR
South Korea
Prior art keywords
light
light receiving
print pattern
panel
icon print
Prior art date
Application number
KR1020150165630A
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Korean (ko)
Inventor
김정락
Original Assignee
주식회사 케이엔케이
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Priority to KR1020150165630A priority Critical patent/KR101627074B1/en
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Publication of KR101627074B1 publication Critical patent/KR101627074B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/02—Mechanical
    • G01N2201/023—Controlling conditions in casing
    • G01N2201/0231—Thermostating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/062—LED's

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The present invention relates to an apparatus to test transmittance of a printed icon pattern. The present invention provides the apparatus to test transmittance of the printed icon pattern, comprising: a panel rack part where a touchscreen panel formed with the printed icon pattern is placed; a light source part arranged below the panel rack part, irradiating a test light on the printed icon pattern; a photo detection part arranged on the panel rack part, detecting a transmitted light passing through the printed icon pattern; and a control part which controls the light source part and the photo detection part, determining whether the printed icon pattern is abnormal by calculating transmittance of the printed icon pattern from illumination of the transmitted light. The apparatus of the present invention is able to reduce a difference in measurement among the test units by suppressing variations in brightness of the test light and minimizing deviation of an assembling position of a photo detection module in accordance with a tolerance for assemblage.

Description

TECHNICAL FIELD [0001] The present invention relates to a device for inspecting the transmittance of an icon printed pattern,

The present invention relates to an apparatus for inspecting the transmittance of an icon print pattern.

In recent smart phones, operation buttons such as a menu button and a back button are provided in the form of soft buttons outside the display panel area of the touch screen.

For reasons such as design, such a soft button is formed in a tempered glass that also serves as a touch panel, and the LED provided in the main body provides visibility to the user through the backlight.

However, when forming an icon print pattern that forms a soft button on the tempered glass, a defect that the pattern is opened less may occur. In addition, defects of the tempered glass itself, for example, impurities contained in the tempered glass, or scratches on the surface of the tempered glass may cause problems in the transparency of the icon printed pattern.

Due to the above problems, there may be a difference in brightness among the buttons in one device, and a difference in brightness of the soft buttons between the products may be generated.

In order to prevent such a problem, a method of checking the brightness of the icon print pattern with the naked eye is used, but there is a problem that the inspection error is largely generated according to the subject of the inspector.

Korean Patent Laid-Open No. 10-2015-0057255 'Transmittance Test Apparatus for Printing Patterns for IR Sensors' Korean Patent No. 10-1242295 " TESPI Transmittance Meter " which quickly and accurately inspects the Ir print pattern of the touch panel,

An object of the present invention is to provide an apparatus for inspecting the transmittance of an icon print pattern which suppresses a change in brightness of inspection light and minimizes a deviation of an assembling position of the light receiving module due to the assembly tolerance,

According to an aspect of the present invention, there is provided an apparatus for inspecting the transmittance of an icon print pattern, the apparatus comprising: a panel mount part for mounting a touch screen panel on which an icon print pattern is formed; A light source unit disposed below the panel mount unit and configured to irradiate inspection light onto the icon print pattern; A light receiving unit disposed above the panel mount unit and configured to receive transmitted light having passed through the icon print pattern; And a control unit for controlling the light source unit and the light receiving unit and calculating the transmittance of the icon print pattern from the illuminance of the transmitted light to determine whether the icon print pattern is abnormal.

At this time, the panel mount part has an alignment groove for positioning the light receiving part in a correct position, and the light receiving part includes a bracket coupled to the alignment groove; And a light receiving sensor mounted on the bracket and receiving the transmitted light.

At this time, the bracket may include a seating part on which the light receiving sensor is seated; A body portion extending from one side of the mount portion to the panel mount portion to secure a distance between the light receiving sensor and the icon print pattern; And an engagement pin provided at a lower end of the body portion and engaging with the alignment groove.

The light receiving sensor is inserted in the center of a sensor guide having the same size as the seat back, and the sensor guide is coupled to the air hole, so that the light receiving sensor can be seated have.

The light source unit may include an LED module for emitting the inspection light; A heat dissipation plate fixed to the lower end of the LED module by soldering to disperse heat generated from the LED module; And an air guide coupled to the heat dissipation plate to temporarily receive compressed air.

 At this time, the heat dissipation plate may include a plurality of discharge holes for discharging the injected compressed air.

Further, it may further comprise a dark chamber cover for covering the upper end of the panel mount portion to block light from the outside, and the light receiving portion may be fixed to the dark chamber cover.

In addition, the light source unit and the light receiving unit correspond to the number of icon print patterns formed on the touch screen panel, respectively, and the controller can drive only the light source unit and the light receiving unit corresponding to the icon print pattern to be inspected, .

According to the apparatus for inspecting the transmittance of the icon print pattern according to the embodiment of the present invention,

First, since the light receiving sensor is inserted into the circular sensor guide and fixed to the bracket, deviation of the sensor position due to the tolerance in manufacture of the light receiving portion can be minimized.

Second, since the LED module that irradiates the inspection light is fixed by soldering to the heat dissipation plate, it is possible to efficiently disperse the heat generated from the LED module, and the light amount change due to the overheating of the LED module can be solved.

1 is a block diagram of an apparatus for inspecting the transmittance of an icon print pattern according to an embodiment of the present invention.
2 is a schematic diagram of an apparatus for inspecting the transmittance of an icon print pattern according to an embodiment of the present invention.
3 is a view for explaining a light receiving portion.
4 illustrates an example in which the light receiving portion is coupled to the panel mounting portion.
5 is a view for explaining the light source unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

1 is a block diagram of an apparatus for inspecting the transmittance of an icon print pattern according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus 1000 for inspecting the transmittance of an icon print pattern according to the present invention includes a panel mount unit 100, a light source unit 200, a light receiving unit 300, and a control unit 700.

The panel mount 100 mounts the touch screen panel 500 to be inspected.

The touch screen panel 500 to be inspected in the present invention is a panel having soft buttons such as a menu button and a back button.

The soft button is a button having an icon print pattern that transmits light through the panel, and provides visibility to the user by using an LED provided in the smart phone body as a backlight. However, since the touch screen panel 500 according to the present invention is in the state before the assembly, the soft button and the icon print pattern 510 are the same as the icon print pattern. .

The panel mount portion 100 has a form in which a portion where the icon print pattern 510 is contacted is opened to allow inspection light irradiated from the light source portion 200 to pass therethrough.

The light source unit 200 is disposed under the panel mount unit 100, and irradiates the icon print pattern 510 with inspection light.

The light receiving unit 300 is disposed above the panel mount unit 100 and receives transmitted light that has passed through the icon print pattern 510.

The control unit 700 controls the light source unit 200 and the light receiving unit 300 and calculates the transmittance of the icon print pattern 510 from the illuminance of the transmitted light to determine whether the icon print pattern 510 is abnormal.

That is, in brief, the transparency inspection apparatus 1000 of the icon print pattern is an apparatus for checking the transparency of the icon print pattern 510 partially tempered glass.

2 is a schematic diagram of an apparatus for inspecting the transmittance of an icon print pattern according to an embodiment of the present invention.

The panel mount 100 mounts the touch screen panel 500 to be inspected.

Specifically, the panel mount 100 includes a mounting surface 120 that is engraved to receive the touch screen panel 500.

The stationary surface 120 has an opening 130 opposed to the icon print pattern 510 and the LED module 210 constituting the light source unit 200 is inserted into the opening 130 from the lower side, Investigate.

According to the drawings, two openings 130 and a light receiving unit 300 are shown. Although not shown, two light sources 200 are also provided. The light source unit 200 and the light receiving unit 300 may be configured to correspond to the touch screen panel 500 having two soft buttons, ) Can be appropriately modified.

The touch screen panel 500 may be closely attached to the mounting surface 120 and may be provided with an air vent hole (not shown) on the mounting surface 120 for easily separating the inspected touch screen panel 500 have.

In addition, the panel mount part 100 may be provided with an alignment groove 110 for positioning the light receiving part 300 in a predetermined position. The light receiving unit 300 is coupled to the alignment groove 110 in the form of a bracket to be precisely positioned on the optical axis of the icon print pattern 510, which will be described in detail with reference to FIG.

The light receiving unit 300 receives transmitted light that has passed through the icon print pattern 510. The dark room cover 400 completely covers the upper end of the panel mount 100 to block the foreign light from the outside. The light receiving portion 300 is fixed to the dark room cover 400 so that the dark room cover is lowered to cover the panel mounting portion 100 and is engaged with the alignment groove 110.

3 is a view for explaining a light receiving portion.

3, the light receiving unit 300 includes a bracket 310, a light receiving sensor 320 and a sensor guide 315. The bracket 310 includes a seat portion 311, a body portion 312, (313), and an earthed hole (314) is provided in the seat part (311).

The seat part 311 is a part where the light receiving sensor 320 is seated and has a circular hole 314 for accurately positioning the light receiving sensor 320 on the optical axis of the icon print pattern 510. [

The light-receiving sensor 320 is a sensor that receives transmitted light and detects it as a voltage or a current, and outputs a voltage and a current corresponding to the illuminance of the transmitted light. The control unit 700 calculates the transmittance of the icon print pattern 510 on the basis of the voltage or current value output from the light receiving sensor 320.

Although not shown, the light receiving sensor 320 is assembled to the bracket 310 in a soldered form to a small PCB substrate for easy connection with a signal transmitting cable. At this time, the position of the light receiving sensor 320 to be soldered to the PCB substrate due to the assembly tolerance varies depending on the substrate.

Therefore, in order to minimize such a tolerance when assembling the light receiving sensor 320, the bracket 310 has a round hole 314. A light receiving sensor 320 is inserted into the center of a circular sensor guide 315 having the same size as that of the aperture 314 and the sensor guide 315 is coupled to the aperture 314. Since the aperture 314 and the sensor guide 315 have a circular shape, even if biting occurs during assembly, the light receiving sensor 320 is still positioned at the center of the light receiving portion 311, Can be minimized.

The body 312 extends from one side of the seat 311 in the direction of the panel mount 100 to secure a distance between the light receiving sensor 320 and the icon print pattern 510. According to the configuration in which the icon print pattern 510 and the light receiving sensor 320 are spaced apart from each other, the transmission light detection error caused by the discrepancy between the light receiving sensor 320 and the icon print pattern 510 can be reduced.

4 illustrates an example in which the light receiving portion is coupled to the panel mounting portion.

A coupling pin 313 is provided at the lower end of the body 312 and the coupling pin 313 engages with the alignment groove 110 when the dark chamber cover descends to cover the panel mount 100. That is, it can be seen that the light receiving sensor 320, which is seated on the bracket 310 by the engagement pin 313, is located on the optical axis of the icon print pattern 510.

5 is a view for explaining the light source unit.

The light source unit 200 includes an LED module 210, a heat dissipating plate 220, and an air guide 230.

The LED module 210 is a module for illuminating the icon print pattern 510 for inspection light. The LED module 210 may be formed of one LED element or a combination of LED elements emitting light of a specific wavelength, depending on the optical configuration used for inspection.

The LED module 210 may be inserted into the opening 130 of the panel mount 100 to illuminate the icon print pattern 510 for inspection light.

The LED device generates heat according to the light emission, and the LED device has a characteristic that the illuminance decreases as the temperature increases. As a result, the temperature of the LED element becomes higher due to the progress of the inspection, and an error occurs in the detection result.

In order to solve this problem, the light source 200 fixes the LED module 210 to the heat dissipation plate 220 by soldering. The heat generated in the LED module 210 is discharged to the heat radiation plate 220.

At this time, it is preferable that the light source unit 200 includes an air guide 230 to increase heat dissipation efficiency. The size of the heat dissipating plate 220 is restricted because the size of the touch screen panel 500 must be considered. The air guide 230 is a guide for temporarily accommodating the compressed air in combination with the heat dissipating plate 220.

5, a space for receiving air is formed by the lower surface of the panel mount 100, the air guide 230, and the heat radiating plate 220. And compressed air is injected into the space through an air injection tube (not shown) to efficiently perform cooling of the LED module 210. At this time, it is preferable that a plurality of discharge holes 221 are provided in the heat dissipating plate 220 to discharge the injected compressed air.

5, the compressed air is injected through the injection port provided in the heat dissipation plate 220. However, the compressed air is injected through the injection port provided in the heat dissipation plate 220, Also,

In the embodiment, the transmittance testing apparatus 1000 includes two light source units 200 and two light receiving units 300, respectively.

The icon print pattern 510 and the light receiving sensor 320 have a certain distance from the bracket 310. Since the menu button and the back button are adjacent to each other on the touch screen panel 500, A part of the transmitted light is received by the light receiving sensor 320 for inspecting the back button, which may affect the transmittance inspection.

Accordingly, in order to prevent such interference, the control unit 700 preferably drives only the light source unit and the light receiving unit corresponding to the icon print pattern to be inspected to conduct the inspection.

The embodiments of the present invention disclosed in the present specification and drawings are merely illustrative examples of the present invention and are not intended to limit the scope of the present invention in order to facilitate understanding of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1000: Transmittance test apparatus
100: panel mount part 200: light source part
300: light receiving part 400: dark room cover
500: touch screen panel 600: body housing
700:

Claims (8)

A panel mount part for mounting a touch screen panel on which an icon print pattern is formed;
A light source unit disposed below the panel mount unit and configured to irradiate inspection light onto the icon print pattern;
A light receiving unit disposed above the panel mount unit and configured to receive transmitted light having passed through the icon print pattern; And
And a control unit for controlling the light source unit and the light receiving unit to calculate the transmittance of the icon print pattern from the illuminance of the transmitted light to determine whether the icon print pattern is abnormal,
The panel-
And an alignment groove for positioning the light receiving portion in a predetermined position,
The light-
A bracket coupled to the alignment groove; And
And a light receiving sensor that is seated on the bracket and receives the transmitted light,
Wherein the bracket includes: a seating part on which the light receiving sensor is seated;
A body portion extending from one side of the mount portion to the panel mount portion to secure a distance between the light receiving sensor and the icon print pattern; And
And an engagement pin provided at a lower end of the body portion and engaged with the alignment groove,
Wherein the seat portion has a circular air hole,
Wherein the light receiving sensor is inserted in the center of a sensor guide having the same size as the seating hole, and the sensor is seated in a structure in which the sensor guide is coupled to the air hole,
Further comprising a dark chamber cover which covers the top of the panel mount portion and blocks light from the outside,
Wherein the light receiving portion is fixed to the darkroom lid,
Wherein the engaging pin engages with the alignment groove when the dark chamber cover descends to cover the panel mount,
Wherein the light source unit and the light receiving unit respectively correspond to the number of icon print patterns formed on the touch screen panel,
Wherein,
Wherein the inspection is performed by driving only the light source unit and the light receiving unit corresponding to the icon print pattern to be inspected. delete delete delete The method according to claim 1,
The light source unit includes:
An LED module for irradiating the inspection light;
A heat dissipation plate fixed to the lower end of the LED module by soldering to disperse heat generated from the LED module; And
And an air guide coupled to the heat dissipation plate to temporarily receive the compressed air. 6. The method of claim 5,
The heat-
And a plurality of discharge holes for discharging the injected compressed air. delete delete
KR1020150165630A 2015-11-25 2015-11-25 Device for testing transmittance of printed icon pattern KR101627074B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005148624A (en) * 2003-11-19 2005-06-09 Nec Viewtechnology Ltd Cooling mechanism, electronic equipment, projector, and method for cooling inside of housing
WO2010013777A1 (en) * 2008-07-30 2010-02-04 株式会社日立ハイテクノロジーズ Sample analysis device
JP2012143265A (en) * 2011-01-06 2012-08-02 Hoya Corp Calibration device and calibration method
KR101242295B1 (en) 2012-07-27 2013-03-11 주식회사 시노펙스 Ir transmissivity test instrument of touch screen pannel
KR20150057255A (en) 2013-11-19 2015-05-28 동우 화인켐 주식회사 Transmittance inspection device for printed pattern for ir sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005148624A (en) * 2003-11-19 2005-06-09 Nec Viewtechnology Ltd Cooling mechanism, electronic equipment, projector, and method for cooling inside of housing
WO2010013777A1 (en) * 2008-07-30 2010-02-04 株式会社日立ハイテクノロジーズ Sample analysis device
JP2012143265A (en) * 2011-01-06 2012-08-02 Hoya Corp Calibration device and calibration method
KR101242295B1 (en) 2012-07-27 2013-03-11 주식회사 시노펙스 Ir transmissivity test instrument of touch screen pannel
KR20150057255A (en) 2013-11-19 2015-05-28 동우 화인켐 주식회사 Transmittance inspection device for printed pattern for ir sensor

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