Backlight detection device and detection method

Patent metadata

Field	Value
Publication number	US-2016377480-A1
Application number	US-201615173899-A
Country	US
Kind code	A1
Filing date	Jun 6, 2016
Priority date	Jun 25, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

An embodiment of the present disclosure provides a backlight detection device, comprising: a carrier plate, having a backlight detection region for carrying a backlight to be detected; a light property detection plate with a plurality of brightness sensors arranged thereon, configured for detecting light properties of different regions of a backlight to be detected which is positioned in the backlight detection region; and a data processing unit, in signal connection with the plurality of brightness sensors, configured for judging whether the light property of the backlight to be detected is qualified or not according to a plurality of brightness signals of different regions of the light source to be detected which are detected by the plurality of brightness sensors.

First claim

1 . A backlight detection device, comprising:
a carrier plate, having a backlight detection region for carrying a backlight to be detected; a light property detection plate with a plurality of brightness sensors arranged thereon, configured for detecting light properties of different regions of a backlight to be detected which is positioned in the backlight detection region; and a data processing unit, in signal connection with the plurality of brightness sensors, configured for judging whether the light property of the backlight to be detected is qualified or not according to a plurality of brightness signals of different regions of the light source to be detected which are detected by the plurality of brightness sensors.

2 . The backlight detection device according to claim 1 , wherein the plurality of brightness sensors are uniformly distributed on the light property detection plate.

3 . The backlight detection device according to claim 1 , wherein relative position of the light property detection plate and the carrier plate are changeable.

4 . The backlight detection device according to claim 3 , wherein the carrier plate is provided with a pillar and a support block, the pillar and the support block are positioned on two opposite sides of the backlight detection region, the light property detection plate can be rotatably connected to the pillar, and the light property detection plate can be detachably connected to the support block.

5 . The backlight detection device according to claim 4 , wherein the light property detection plate is provided with a rotary via hole, and the light property detection plate is sleeved on the pillar through the rotary via hole.

6 . The backlight detection device according to claim 3 , wherein one side of the light property detection plate is rotatably connected with the carrier plate.

7 . The backlight detection device according to claim 3 , wherein the carrier plate is provided with two parallel and opposite guide rails, and the light property detection plate is slidably arranged on the two guide rails.

8 . The backlight detection device according to claim 1 , further comprising a pressure switch arranged in the backlight detection region of the carrier plate, wherein the pressure switch is configured for controlling an energization state of the backlight to be detected.

9 . The backlight detection device according to claim 1 , wherein an analog-to-digital converter is arranged between the brightness sensors and the data processing unit, the analog-to-digital converter being configured for converting analog signals transmitted from the plurality of brightness sensors into digital signals, and transmitting the digital signals to the data processing unit.

10 . The backlight detection device according to claim 9 , wherein the backlight detection device further comprises an alarm unit, and the alarm unit being in signal connection with the data processing unit; and
in a case that the data processing unit determines that the light properties of the backlight to be detected are unqualified according to the digital signals transmitted from the analog-to-digital converter, the data processing unit sends a command to the alarm unit so that the alarm unit sends an alarm.

11 . A detection method adopting the backlight detection device according to claim 1 , comprising:
placing a backlight to be detected on a backlight detection region of a carrier plate and lighting the backlight to be detected; positioning a light property detection plate directly above the backlight to be detected, wherein a plurality of brightness sensors detect brightnesses of different regions of the backlight to be detected simultaneously; and by a data processing unit, judging whether light property of the backlight to be detected is qualified or not according to a plurality of brightness signals of different regions of the backlight to be detected which are detected by the plurality of brightness sensors.

12 . The detection method for a backlight according to claim 11 , wherein the by a data processing unit, judging whether light property of the backlight to be detected is qualified or not according to a plurality of brightness signals of different regions of the backlight to be detected which are detected by the plurality of brightness sensors, includes:
if a minimum brightness signal value of the plurality of brightness signals of different regions of the backlight to be detected which are detected by the plurality of brightness sensors is greater than or equal to a preset standard brightness value, and a ratio of the minimum brightness signal value to a maximum brightness signal value of the plurality of brightness signals is greater than or equal to a standard ratio, determining the light property of the backlight to be detected is qualified by the data processing unit; otherwise, determining that the light property of the backlight is unqualified.

13 . The detection method for the backlight according to claim 11 , wherein after that by a data processing unit, judging whether light property of the backlight to be detected is qualified or not according to brightness signals of different regions of the backlight to be detected which are detected by the plurality of brightness sensors, the detection method for the backlight further comprises:
moving the light property detection plate away from a position directly above the backlight to be detected if the data processing unit determines that the light property of the backlight to be detected is qualified, and detecting electric property of the backlight to be detected.

Assignees

• Boe Technology Group Co Ltd
• Boe (Hebei) Mobile Display Tech Co Ltd

Inventors

• Wang Jiayin
• Han Dongnian
• Wu Zhen
• Li Xing
• Yang Guowen

Classifications

• G01J1/44

  Electric circuits {(for command of an exposure part G03B7/02)} · CPC title

• G08B21/18

  Status alarms (G08B21/02 takes precedence) · CPC title

• G01J1/4228 Primary

  arrangements with two or more detectors, e.g. for sensitivity compensation · CPC title

• G08B25/08

  using communication transmission lines {(G08B13/19658, G08B21/0286, G08B25/016 take precedence)} · CPC title

• G01J1/0403

  Mechanical elements; Supports for optical elements; Scanning arrangements · CPC title