US 2020/0090563 A1Published application

Source driver

AssigneeNovatek Microelectronics Corp.

InventorYu-Jen Yen

Life of this patent

Estimating the term…

Loading patent…

Abstract

A source driver includes a first output pad, a second output pad, a first charge-sharing path, a second charge-sharing path, a first charge-sharing switch, a second charge-sharing switch and a test circuit. A first terminal and a second terminal of the first charge-sharing switch are respectively coupled to the first output pad and the first charge-sharing path. A first terminal and a second terminal of the second charge-sharing switch are respectively coupled to the second output pad and the second charge-sharing path. The test circuit is coupled to the first charge-sharing path and the second charge-sharing path. The test circuit performs a test for the first output pad and the second output pad via the first charge-sharing path, the second charge-sharing path, the first charge-sharing switch and the second charge-sharing switch in a test period.

Claims13

Dependent claims

A source driver, configured to drive a display panel, comprising:

a first output pad, configured to be coupled to a first data line of the display panel;
a second output pad, disposed next to the first output pad, and configured to be coupled to a second data line of the display panel;
a first charge-sharing path;
a second charge-sharing path;
a first charge-sharing switch, having a first terminal coupled to the first output pad and a second terminal coupled to the first charge-sharing path;
a second charge-sharing switch, having a first terminal coupled to the second output pad and a second terminal coupled to the second charge-sharing path;
and
a test circuit, coupled to the first charge-sharing path and the second charge-sharing path, wherein the test circuit performs a test for the first output pad and the second output pad via the first charge-sharing path, the second charge-sharing path, the first charge-sharing switch and the second charge-sharing switch in a test period.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/131,040Filed 14 Sep 2018
Published: 19 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G09G 3/006
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes: electronic inspection or…
G01R 31/3004
Marginal testing, e.g. by varying supply voltage: current or voltage test
G09G 3/3275
Organic, e.g. using organic light-emitting diodes [OLED]: details of drivers for data electrodes
G09G 3/3688
Details of drivers for data electrodes: suitable for active matrices only