# US 8,542,174 B2 · Display panel and driving method thereof

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- Number: US 8,542,174 B2
- Document ID: US8542174B2
- Status: Granted
- Kind: B2
- Application number: 13/009,604
- Filed: 2011-01-19
- Published: 2011-05-12
- 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/US8542174B2

## 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 method for driving a display panel, comprising:
transferring a first set of data stored in N first storage capacitors in a M−1th period to N corresponding first pixels through N data lines, so as to drive the N corresponding first pixels, and storing a second set of data on a second signal line from a data driver to N second storage capacitors, during an Mth period;
transferring the second set of data stored in the N second storage capacitors to N corresponding second pixels through the N data lines, so as to drive the N corresponding second pixels, and storing a third set of data on a first signal line from the data driver to the N first storage capacitors, during an M+1th period; and
transferring a fourth set of data on the first signal line from the data driver to N first storage capacitors through the N data lines, such that the N corresponding first pixels are driven by the first and fourth sets of data, during the Mth period;
wherein the first signal line is different from the second signal line;
wherein the second set of data on the second signal line is stored in the N second storage capacitors in sequence during the Mth period, and wherein the third set of data on the first signal line is stored in the N first storage capacitors in sequence during the M+1th period; and
wherein M and N are integers larger than 2.

### Claim 2 (depends on 1)

The driving method as claimed in claim 1, wherein the first, the second, and the third sets of data comprises display data.

### Claim 3 (depends on 1)

The driving method as claimed in claim 1, further comprising transferring a fifth set of data on the second signal line from the data driver to N second storage capacitors through the N data lines, such that the N corresponding second pixels are driven by the second and fifth sets of data, during the M+1th period.

### Claim 4 (depends on 3)

The driving method as claimed in claim 3, wherein the fourth set of data on the first signal line is transferred to the N corresponding first pixels in sequence during the Mth period, and the fifth set of signal on the second data line is transferred to the N corresponding second pixels in sequence during the M+1th period.

### Claim 5 (depends on 4)

The driving method as claimed in claim 4, wherein the first and fourth sets of data comprise the same display data, and the second and fifth sets of data comprise the same display data.

### Claim 6 (depends on 4)

The driving method as claimed in claim 4, wherein the fourth and fifth sets of data comprise display data, the first set of data comprises a set of overdriven voltage signals corresponding to the fourth set of data, and the second set of data comprises a set of overdriven voltage signals corresponding to the fifth set of data.