LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF CONTROLLING THE SAME

• US 20080174542A1
• Filed: 09/11/2007
• Published: 07/24/2008
• Est. Priority Date: 12/22/2006
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Wada, Takashi
• Application Number:
  US11/853,634
• Publication Number:
  US 20080174542A1
• Time in Patent Office: Days
• US Class Current: 345/102
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/066 for control of contrast
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

According to one embodiment, a liquid crystal display device including: a display unit configured to display an image, the display unit including an LCD panel and a backlight; an input unit at which an adjustment amount is input, the adjusting amount being used to adjust a contrast and a brightness of the image; and a control unit configured to adjust a brightness of the backlight and a contrast value of the LCD panel based on the adjustment amount, the brightness of the backlight being adjusted when the contrast value is maximum, the contrast value being adjusted when the brightness of the backlight is minimum.

Claims

1. A liquid crystal display device comprising:

a display unit configured to display an image, the display unit including an LCD panel and a backlight;

an input unit at which an adjustment amount is input, the adjusting amount being used to adjust a contrast and a brightness of the image; and

a control unit configured to adjust a brightness of the backlight and a contrast value of the LCD panel based on the adjustment amount, the brightness of the backlight being adjusted when the contrast value is maximum, the contrast value being adjusted when the brightness of the backlight is minimum.

2. The liquid crystal display device according to claim 1,

wherein the control unit includes a contrast control unit configured to adjust the contrast value of the LCD panel and a backlight control unit configured to adjust the brightness of the backlight.

3. The liquid crystal display device according to claim 2,

wherein the input unit includes a switch configured to control an increase and decrease of a numerical value for adjusting the display unit.

4. A liquid crystal display device comprising:

a display unit configured to display an image, the display unit including an LCD panel and a backlight;

a contrast control unit configured to adjust the contrast value of the LCD panel;

a backlight control unit configured to adjust the brightness of the backlight;

an input unit at which an adjustment amount is input, the adjusting amount being used to adjust a contrast and a brightness of the image; and

a control unit configured to transmit a first control signal to the contrast control unit and a second control signal to the backlight control unit, the first control unit being transmitted to adjust the brightness of the backlight based on the adjusting amount when the contrast value is maximum, the second control unit being transmitted to adjust the contrast value based on the adjusting amount when the brightness of the backlight is minimum.

5. The liquid crystal display device according to claim 4,

wherein the input unit includes a switch configured to control an increase and decrease of a numerical value for adjusting the display unit.

6. A method of controlling a liquid crystal display device including an LCD panel and a backlight, the method comprising:

inputting a display adjustment degree;

determining a contrast value of the LCD panel and a brightness value of the backlight based on the adjustment degree;

adjusting the brightness value of the backlight when it is determined that the contrast value of the LCD panel is maximum; and

adjusting the contrast value of the LCD panel when it is determined that the brightness of the backlight is minimum.

7. The method according to claim 6,

wherein the step of adjusting the brightness value of the backlight includes transmitting a first control signal to a contrast control unit to enable the contrast control unit to adjust the brightness of the backlight;

and

the step of adjusting the contrast value of the LCD panel includes transmitting a second control signal to a backlight control unit to enable the backlight control unit to adjust the contrast value of the LCD panel.