Calibrator for a display screen

Patent metadata

Field	Value
Publication number	US-9530340-B2
Application number	US-201314769751-A
Country	US
Kind code	B2
Filing date	Aug 16, 2013
Priority date	Apr 26, 2013
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

There is disclosed a calibrator configured to calibrate a color of a screen of a display device includes an absorption plate formed of a transformable material, comprising a bottom surface attached to the screen of the display device in a vacuum absorption method; a control portion configured to leave space a first portion of the absorption plate from the screen of the display device; a fixed portion configured to press a second portion of the absorption plate to the screen of the display closely; a rotary portion configured to rotatably coupled to the fixed portion in a horizontal direction and to move the control portion in a vertical direction of the display device, when it is rotated; and a circuit unit mounted in the fixed portion to calibrate the color of the display device, such that the calibrator may be fixed in a precise position of the screen and that the screen calibration can be performed precisely and that the calibrator can be attached even to a tilted screen and used widely.

First claim

The invention claimed is:

1. A calibrator selectively attaching to a screen of a display device for calibrating, comprising:
an absorption plate formed of a transformable material, comprising a bottom surface attached to the screen of the display device in a vacuum absorption method;
a control portion pulling a first portion of the absorption plate to leave a space between the first portion of the absorption plate and the screen of the display device, wherein the control portion comprises:
a control bracket comprising a control plate coupled to the first portion of the absorption plate and a control rod extending from the control plate in a vertical direction; and
a movable frame coupled to an end of the control rod to move in a vertical direction of the display device, when the rotary portion is rotated, and to space the control bracket and the first portion of the absorption plate from the screen of the display device;

a fixed portion pressing a second portion of the absorption plate to the screen, wherein the fixed portion comprises:
a fixed plate coupled to a top surface of the absorption plate, the fixed plate comprising a projected portion having a bottom surface in contact with the second portion of the absorption plate and a recessed portion spaced apart a predetermined distance from a first portion of the absorption plate;

a rotary portion rotatably coupled to the fixed portion in a horizontal direction of the display device to move the control portion in a vertical direction of the display device, when it is rotated, wherein the rotary portion comprises:
a rotary plate comprising an inclined portion in contact with a lower portion of the movable frame, and the movable frame moves along the inclined portion when the rotary plate is rotated and moves in a vertical direction with respect to the display device; and

a circuit unit mounted in the fixed portion to calibrate the color of the display device.

2. The calibrator according to claim 1 , wherein the inclined portion comprises an inclined surface and a seating surface provided in an end of the inclined surface.

3. The calibrator according to claim 2 , wherein the inclined portion is provided in two steps, and
the inclined portion comprises a first inclined surface, a first seating surface, a second inclined surface continuously formed after the first seating surface and a second seating surface continuously formed after the second inclined surface.

4. The calibrator according to claim 1 , wherein the rotary plate further comprises,
a rotation hole configured to insert the control rod therein, in an arc shape with respect to a rotation axis of the rotary plate.

5. The calibrator according to claim 1 , wherein the fixed plate further comprises,
a first rod insertion hole formed in the recessed portion to penetrate the control rod there through.

6. The calibrator according to claim 5 , wherein the circuit unit is seated on a top surface of the fixed plate, and
the fixed portion further comprises a middle cover coupled to the top surface of the fixed plate to cover the circuit unit, with a second rod insertion hole configured to penetrate the control rod there through.

7. The calibrator according to claim 6 , further comprising:
a guide pole formed in a top surface of the middle cover,
wherein the rotary plate comprises a hole configured to insert the guide pole therein, and
the movable frame further comprises a guide pole insertion hole configured to insert the guide pole therein.

8. The calibrator according to claim 7 , further comprising:
a flexible member coupled to an end of the guide pole to push the movable frame downward.

9. The calibrator according to claim 7 , wherein the guide pole is provided in an outer position with respect to a rotational center of the rotary plate, and
the hole of the rotary plate is formed in an arc shape with respect to a rotation axis of the rotary plate.

10. The calibrator according to claim 5 , wherein the rotary portion comprises,
a top cover configured to cover the movable frame and coupled to the rotary plate to rotate together with the rotary plate.

11. The calibrator according to claim 10 , wherein the top cover further comprises,
a hook projected downward, with a hooking protrusion formed in an end thereof, and
the rotary plate comprises a hook insertion hole configured to penetrate the hook there through, and
the middle cover further comprises a hooking hole formed in an inner surface of the middle cover to hook a hooking protrusion of the hook therein.

12. The calibrator according to claim 11 , wherein the hook is provided in an outer position with respect to a rotation center of the rotary portion, and
the hooking hole is formed in an arc shape corresponding to the distance where the hook moves by the rotation of the rotary portion.

13. The calibrator according to claim 10 , wherein the top cover further comprises,
a plurality of grooves formed in a circumferential portion thereof.

14. The calibrator according to claim 1 , wherein the absorption plate is formed in a donut shape having a hole formed in a central portion,
the first portion is formed in a ring shape provided in a middle portion of the donut shape of the absorption plate, and
the second portion is formed in an inner circumference and an outer circumference of the donut shape of the absorption plate.

15. The calibrator according to claim 1 , wherein three or more circular absorption plates are arranged in a circular shape, and
the first portion is a central portion of the absorption plate, and
the second portion is an outer circumferential portion of the absorption plate.

16. The calibrator according to claim 1 , wherein the absorption plate further comprises,
a separation protrusion projected from an end thereof.

17. The calibrator according to claim 1 , wherein the circuit unit comprises a control board having a sensor configured to calibrate a color of the screen of the display device mounted therein.

Assignees

• Lg Electronics Inc

Inventors

• Lee Kyungwon
• Ryu Juhyeok
• Kwon Ohkwan

Classifications

• G01J3/506

  measuring the colour produced by screens, monitors, displays or CRTs · CPC title

• F16B47/00

  Suction cups for attaching purposes; Equivalent means using adhesives {(devices using adhesives, suction or magnetism for hanging or supporting pictures or the like A47G1/17; vacuum work holders B25B11/005; anchoring of ships using suction B63B21/27; suction cups for handling glass B65G49/061; load-engaging elements for cranes using suction means B66C1/02)} · CPC title

• G01J3/0291

  Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements · CPC title

• G09G3/006 Primary

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G09G2320/0693

  Calibration of display systems · CPC title