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Checker of flat display

A flat-panel display and inspection device technology, which is applied in hoisting devices, measuring devices, static indicators, etc., can solve the problems of non-automatic control, reduced effective life of inspection devices, and user inconvenience

Active Publication Date: 2009-04-01
DE&T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the ballast stabilizer used in the aforementioned test setup includes a dimming controller, the brightness of the light source must be controlled manually rather than automatically
[0012] Therefore, in the inspection device of the conventional flat panel display, the backlight, the ballast stabilizer, and the controller for driving the inspection device are separated from each other, so that the user must manually adjust the brightness of the lamp by operating the dimming controller, Inconvenience to users
[0013] In addition, if the brightness of the lamp is adjusted by fine-tuning the ballast stabilizer, there will be flickering phenomenon at low brightness, which will shorten the life of the lamp and reduce the effective life of the traditional inspection device

Method used

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Embodiment Construction

[0027] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In these drawings, the same or similar elements are denoted by the same reference numerals even if they are depicted in different drawings. In the following description, detailed descriptions of known functions and configurations incorporated herein are omitted in consideration that they may obscure the subject matter of the present invention.

[0028] image 3 A block diagram of an inspection device for a flat panel display according to the present invention is shown.

[0029] refer to image 3 , the inspection device 100 of the flat panel display includes: a frame 110, on which a flat panel display 200 is placed; a backlight 120, which is located below the frame 110, and is used to irradiate light onto the flat panel display 200; a driving device 130, which includes a direction to the backlight 120 provides a constant voltage ballast stabiliz...

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Abstract

A flat panel display inspection apparatus automatically controls brightness of a backlight source according to the magnitude of a flat panel display by means of a ballast stabilizer with a dimming control circuit for brightness adjustment. The flat panel display inspection apparatus for inspecting an appearance of a flat panel display using a backlight lamp emitting light includes: a support unit for supporting the flat panel display; a ballast stabilizer for including a dimming control circuit continuously adjusting brightness of the backlight lamp, and applying a constant voltage to the backlight lamp; a converter controller for transmitting a DC voltage of a predetermined range, adapted to control an output signal of the ballast stabilizer, to the dimming control circuit; and a controller for transmitting a dimmer value adapted to establish a magnitude of the DC voltage to the converter controller.

Description

technical field [0001] The present invention relates to a flat-panel display inspection device, in particular to a flat-panel display inspection device, which uses a ballast stabilizer with a dimming control circuit for brightness adjustment to automatically control the backlight according to the size of the flat-panel display brightness. Background technique [0002] As user demands for flat panel displays such as LCDs (Liquid Crystal Displays) and PDPs (Plasma Display Panels) have increased, many developers have conducted intensive research on flat panel displays. In particular, developers have conducted intensive research on large-sized flat panel displays, so that about 80-inch PDPs have recently entered the market. [0003] In the production of large-sized panels such as LCDs, PDPs, and Els, the appearance of the panel is inspected before assembling internal components such as backlight circuits or driving circuits, such as impurities or stains on the panel, misconnect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G09G3/00G01M11/00G02F1/133H01J9/00
CPCB66D1/46B66D1/54B66D2700/023
Inventor 白乐训
Owner DE&T
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