Display device and driver

• US 20020158859A1
• Filed: 06/20/2002
• Published: 10/31/2002
• Est. Priority Date: 07/24/2000
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yanagi, Toshihiro, Nakano, Taketoshi, Kawaguchi, Takafumi, Nishikubo, Keishi
• Granted Patent: US 7,098,901 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2310/0275 Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 3/3685 Details of drivers for data electrodes
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

A display device includes a display panel including a bus line section; and at least one driver for driving the bus line section included in the display panel. Each of the at least one driver includes an amplifier for generating a non-driving signal based on an input signal, the non-driving signal not contributing to driving of the bus line section.

Claims

1. A display device, comprising:

a display panel including a bus line section; and

at least one driver for driving the bus line section included in the display panel,

wherein each of the at least one driver includes an amplifier for generating a non-driving signal based on an input signal, the non-driving signal not contributing to driving of the bus line section.

2. A display device according to claim 1, wherein:

each of the at least one driver includes a first surface facing the display panel, and the first surface includes a first side in contact with the display panel and a second side facing the first side, and

each of the at least one driver includes an input section, provided closer to the second side than the first side, through which the input signal is input, and an output section, closer to the second side than the first side, through which the non-driving signal is output.

3. A display device according to claim 1, wherein:

each of the at least one driver includes a first surface facing the display panel, and the first surface includes a first side in contact with the display panel and a second side facing the first side, and

each of the at least one driver includes an input section, provided closer to the second side than the first side, through which the input signal is input, and at least one output section, provided in at least one of a position closer to the second side than the first side and a position closer to the first side than the second side, through which the non-driving signal is output.

4. A display device according to claim 1, wherein the amplifier amplifies the input signal at a gain greater than 1 so as to generate the non-driving signal.

5. A display device, comprising:

a display panel for providing a gray scale display by a gray scale voltage; and

at least one driver for generating a gray scale signal having the gray scale voltage,

wherein each of the at least one driver includes an amplifier for generating a gray scale reference signal having a gray scale reference voltage based on an input signal, and a gray scale signal generation section for generating a gray scale signal having the gray scale voltage based on the gray scale reference voltage.

6. A display device according to claim 5, wherein:

each of the at least one driver includes a first surface facing the display panel, and the first surface includes a first side in contact with the display panel and a second side facing the first side, and

each of the at least one driver includes an input section, provided closer to the second side than the first side, through which the input signal is input, and an output section, provided closer to the second side than the first side, through which the gray scale reference signal is output.

7. A display device according to claim 5, wherein:

each of the at least one driver includes a first surface facing the display panel, and the first surface includes a first side in contact with the display panel and a second side facing the first side, and

each of the at least one driver includes an input section, provided closer to the second side than the first side, through which the input signal is input, and at least one output section, provided in at least one of a position closer to the second side than the first side and a position closer to the first side than the second side, through which the gray scale reference signal is output.

8. A display device according to claim 5, wherein the amplifier amplifies the input signal at a gain greater than 1 so as to generate the gray scale reference signal.

9. A display device according to claim 5, wherein:

the at least one driver are a plurality of drivers,

each of the plurality of drivers includes one or two amplifiers, and

a plurality of gray scale reference signals generated by the amplifiers included in the plurality of drivers have different gray scale reference voltages from each other, and each of the plurality of gray scale reference signals is input to each of the plurality of drivers.

10. A display device, comprising:

a display panel including two substrates, one of which has a common electrode provided thereon; and

at least one driver for outputting a common electrode driving signal for driving the common electrode,

wherein each of the at least one driver includes at least one amplifier for generating the common electrode driving signal based on an input signal.

11. A display device according to claim 10, wherein:

each of the at least one driver includes a first surface facing the display panel, and the first surface includes a first side in contact with the display panel and a second side facing the first side, and

each of the at least one driver includes an input section, provided closer to the second side than the first side, through which the input signal is input, and at least one output section provided in at least one of a position closer to the second side than the first side and a position closer to the first side than the second side.

12. A display device according to claim 10, wherein:

the at least one driver are a plurality of drivers, and

each of the plurality of drivers includes one amplifier.

14. A driver according to claim 13, further comprising:

a first surface facing the display panel, the first surface including a first side in contact with the display panel and a second side facing the first side; and

an input section, provided closer to the second side than the first side, through which the input signal is input, and an output section, provided closer to the second side than the first side, through which the non-driving signal is output.

15. A driver according to claim 13, further comprising:

a first surface facing the display panel, the first surface including a first side in contact with the display panel and a second side facing the first side; and

an input section, provided closer to the second side than the first side, through which the input signal is input, and at least one output section, provided in at least one of a position closer to the second side than the first side and a position closer to the first side than the second side, through which the non-driving signal is output.

16. A driver according to claim 13, wherein the amplifier amplifies the input signal at a gain greater than 1 so as to generate the non-driving signal.

13. A driver for driving a display panel including a bus line section, the driver comprising an amplifier for generating a non-driving signal based on an input signal, the non-driving signal not contributing to driving of the bus line section.