Energy saving type touch-controlled liquid crystal display device

• US 8,723,826 B2
• Filed: 11/16/2011
• Issued: 05/13/2014
• Est. Priority Date: 11/15/2011
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Chen, Shih Hsiang, Cheng, Jiahe
• Primary Examiner(s): Sharifi-Tafreshi, Koosha
• Application Number:
  US13/379,903
• Publication Number:
  US 20130120284A1
• Time in Patent Office: 909 Days
• Field of Search: 345/173, 345/174, 178 1801- 1811
• US Class Current: 345/173
• CPC Class Codes: G02F 1/133394 Piezoelectric elements associated with the cells
• CPC Class Codes: G06F 1/3262 Power saving in digitizer or tablet
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

The present invention discloses an energy saving type touch-controlled liquid crystal display device. The energy saving type touch-controlled liquid crystal display device has a liquid crystal panel with a touch-sensing function and a piezoelectric film. The piezoelectric film senses the pressure applied to the liquid crystal panel and generates electric power. The electric power is then stored in a battery module for relative electric components to utilize, and thereby accomplishes an object of energy saving.

Claims

1. An energy saving type touch-controlled liquid crystal display device, characterized in that:

the energy saving type touch-controlled liquid crystal display device comprises;

a liquid crystal panel having a touch-controlled assembly mounted therein to provide a touch-sensing surface in a display area thereof, and the liquid crystal panel comprises a color filter substrate and a thin-film transistor array substrate;

a protection layer mounted on a top of the liquid crystal panel;

a piezoelectric film mounted between the protection layer and the liquid crystal panel, sensing a pressing force applied to the touch-sensing surface to generate electric power; and

a battery module connected to the piezoelectric film and the liquid crystal panel, saving the electric power generated by the piezoelectric film and providing the electric power to the liquid crystal panel.

2. An energy saving type touch-controlled liquid crystal display device, characterized in that:

the comprising;

a liquid crystal panel having a touch-controlled assembly mounted therein to provide a touch-sensing surface in a display area thereof;

a piezoelectric film sensing a pressing force applied to the touch-sensing surface to generate electric power; and

a battery module connected to the piezoelectric film and the liquid crystal panel, saving the electric power generated by the piezoelectric film and providing the electric power to the liquid crystal panel.

3. The energy saving type touch-controlled liquid crystal display device as claimed in claim 2, characterized in that:

the liquid crystal panel comprises an upper substrate and a lower substrate; and

the piezoelectric film is mounted between the upper substrate and the lower substrate.

4. The energy saving type touch-controlled liquid crystal display device as claimed in claim 2, characterized in that:

the upper substrate is a color filter substrate and the lower substrate is a thin-film transistor array substrate.

5. The energy saving type touch-controlled liquid crystal display device as claimed in claim 2, characterized in that:

the liquid crystal panel is mounted on the backlight module with a bottom surface thereof; and

the piezoelectric film is mounted on the bottom surface of the liquid crystal panel.

6. The energy saving type touch-controlled liquid crystal display device as claimed in claim 2, characterized in that:

further comprises a protection layer;

the protection layer is mounted on a top surface of the liquid crystal panel; and

the piezoelectric film is mounted between the protection layer and the liquid crystal panel.