# US 8,542,173 B2 · Display panel and driving method thereof

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- Number: US 8,542,173 B2
- Document ID: US8542173B2
- Status: Granted
- Kind: B2
- Application number: 12/910,059
- Filed: 2010-10-22
- Published: 2011-02-17
- Granted: 2013-09-24
- Earliest claimed: 2005-05-16
- Assignees: Au Optronics Corporation
- Applicants: Che-Chih Chang; Chi-Mao Hung
- Inventors: Che-Chih Chang; Chi-Mao Hung
- Web page: https://patentgrep.com/patent/US8542173B2

## CPC

- 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}
- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- G09G 2310/0251: Precharge or discharge of pixel before applying new pixel voltage
- G09G 2310/08: Details of timing specific for flat panels, other than clock recovery
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

Display panels buffering display data from a data driver. The display panel comprises a first signal line, a first data line, a first scan line interlaced with the first data line, a first pixel coupled to the first data line and the first scan line, a first switching element comprising a first terminal coupled to the first data line, a first storage capacitor coupled between a second terminal of the first switching element and a ground, and a second switching element coupled to the first storage capacitor and the first signal line.

## Claims

### Claim 1

A display panel, comprising:
a first signal line;
a first data line;
a first scan line interlaced with the first data line;
a second scan line interlaced with the first data line and paralleled with the first scan line, wherein the first and second scan lines receive first and second scan signals respectively;
a first pixel coupled to the first data line and the first scan line;
first and second switching elements directly connected in series between the first data line and the first signal line;
a first storage capacitor coupled between first terminals of the first and second switching elements and a ground;
third and fourth switching elements directly connected in series between the first data line and a second signal line, wherein the first signal line and the second signal line receive different signals, respectively; and
a second storage capacitor coupled between first terminals of the third and fourth switching elements and the ground,
wherein a control terminal of the first switching element is coupled to a first control signal and a control terminal of the third switching element is coupled to a second control signal different from the first control signal, and control terminals of the second and fourth switching elements are coupled to a third control signal different from the first and second control signals;
wherein the first switching element is turned on by the first control signal when the first scan signal is activated, and the third switching element is turned on by the second control signal when the second scan signal is activated.

### Claim 2 (depends on 1)

The display panel as claimed in claim 1, wherein the first data line is connected between second terminals of the first and third switching elements and the first pixel.

### Claim 3 (depends on 1)

The display panel as claimed in claim 1, wherein the second terminals of the second and fourth switching elements are coupled to a data driver through the first and second signal lines respectively.

### Claim 4

A display panel, comprising:
a first signal line;
a first data line;
a first scan line having an odd scan line and an even scan line for receiving an odd scan signal and an even scan signal respectively;
a first pixel coupled to the first data line and the first scan line;
first and second switching elements directly connected in series between the first data line and the first signal line;
a first storage capacitor coupled between first terminals of the first and second switching elements and a ground;
third and fourth switching elements directly connected in series between the first data line and a second signal line, wherein the first signal line and the second signal line receive different signals, respectively; and
a second storage capacitor coupled between first terminals of the third and fourth switching elements and the ground,
wherein a control terminal of the first switching element is coupled to a first control signal which turn on the first switching element in step with the odd scan signal and a control terminal of the third switching element is coupled to a second control signal which turn on the third switching element in step with the even scan signal.

### Claim 5 (depends on 4)

The display panel as claimed in claim 4, wherein the first data line is connected between second terminals of the first and third switching elements and the first pixel.

### Claim 6 (depends on 4)

The display panel as claimed in claim 4, wherein the second terminals of the second and fourth switching elements are coupled to a data driver through the first and second signal lines respectively.