Backlight unit structure for liquid crystal display

• US 6,926,419 B2
• Filed: 08/05/2003
• Issued: 08/09/2005
• Est. Priority Date: 08/05/2002
• Status: Active Grant

• Current Assignee: BOE HYDIS Technology Company Limited (SK Hynix Inc.)
• Original Assignee: BOE HYDIS Technology Company Limited (SK Hynix Inc.)
• Inventors: An, Chi Wook
• Primary Examiner(s): Husar, Stephen
• Assistant Examiner(s): Han, Jason
• Application Number:
  US10/634,392
• Publication Number:
  US 20040047141A1
• Time in Patent Office: 735 Days
• Field of Search: 362/31, 362/269, 362/271, 362/277, 362281-287, 362/296, 362560-561, 362/29
• US Class Current: 362/29
• CPC Class Codes: G02F 1/133604 with lamps
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors

Abstract

Disclosed is a backlight unit structure for an LCD (Liquid Crystal Display). The backlight unit structure comprises: a lamp disposed under a display panel; and a reflection plate rotatably disposed around the lamp and having an opening through which light can be concentrated on the display panel. The blink backlight having the reflection plate is applied to backlight unit structure, so that it is possible to improve a response time, to enhance an image quality of the moving picture similarly to the existing CRT, and to obtain a high luminance as well.

Claims

1. A structure for a LCD (Liquid Crystal Display), comprising:

a display panel;

at least a lamp disposed under the display panel; and

at least a reflection plate rotatably disposed around the corresponding lamp and having an opening through which light can be concentrated on the display panel.

2. A structure for a LCD as claimed in claim 1, wherein the lamp and the reflection plate are formed integrally with each other, so that the lamp can rotate together with the corresponding reflection plate while allowing the light to be concentrated on a lower surface of the display panel.

3. A structure for a LCD as claimed in claim 2, wherein a blink rotation speed of the lamp to which the corresponding reflection plate is attached can be synchronized with a scanning speed of a gate signal.

4. A structure for a LCD as claimed in claim 2, further comprising a rotation driver for rotating the lamp and the reflection plate together with each other.

5. A structure for a LCD as claimed in claim 1, wherein the reflection plate is formed separately around the corresponding lamp, so that the reflection plate can rotate separately from the corresponding lamp.

6. A structure for a LCD as claimed in claim 5, wherein the reflection plate has a rotation speed which enables light reflected from the reflection plate to be directed toward a portion directly under a gate line to which the gate signal is applied.

7. A structure for a LCD as claimed in claim 5, further comprising a rotation driver for individually rotating each of the lamp and the reflection plate.

8. A structure for a LCD, comprising:

a display panel; and

a plurality of backlight elements under the display panel, each of the backlight elements having a light excluding portion and an opening portion through which light can be concentrated on the display panel, each of the backlight elements having a rotation speed which enables light passing through the opening to be directed toward a portion directly under a gate line to which a gate signal is applied.

9. A structure for a LCD as claimed in claim 8, wherein the rotation speed of the plurality of backlight elements is synchronized with a scanning speed of a gate signal.

10. A structure for a LCD as claimed in claim 8, wherein the light excluding portion of each of the backlight elements is covered by a light reflecting material.

11. A structure for a LCD as claimed in claim 8, further comprising a rotation driver for individually rotating each of the backlight elements.