Display driver device
AssigneeSamsung Electronics Co., Ltd.
InventorsMinhwa JANG, Chulho CHOI, Hyunje PARK
Life of this patent
Estimating the term…
Abstract
A display driver device includes a timing controller, a display driver integrated circuit, a flexible printed circuit board, a connection line, and a test line. The timing controller includes an output pad unit. The display driver integrated circuit includes an input pad unit. The connection line is formed at the flexible printed circuit board to electrically connect the input pad unit with the output pad unit. The test line is formed at the flexible printed circuit board, and is used to provide a test signal to the input pad unit. The display driver device operates in a normal mode or operates in the test mode based on a test mode signal.
Claims20
A display driver device comprising:
- a timing controller including an output pad unit;
- a display driver integrated circuit including an input pad unit and configured to generate a data voltage based on image data and a control signal received from the timing controller;
- a flexible printed circuit board on which at least one of the timing controller and the display driver integrated circuit are mounted;
- a connection line formed at the flexible printed circuit board that electrically connects the timing controller to the display driver integrated circuit in which one end of the connection line is connected with the input pad unit and an opposite end of the connection line is connected with the output pad unit;
- and
- a test line formed at the flexible printed circuit board and comprising one end connected with the input pad unit and an opposite end connected to receive a test signal for testing the display driver integrated circuit,
- wherein the display driver device operates in a normal mode or in a test mode based on a test mode signal,
- wherein the display driver integrated circuit receives the image data from the timing controller through the connection line in the normal mode, and
- wherein the display driver integrated circuit receives the test signal through the test line and is blocked from receiving the image data through the connection line in the test mode.
A display driver device comprising:
- a timing controller comprising an output pad unit;
- a display driver integrated circuit including an input pad unit and an internal line connected with an internal circuit, which converts image data into a data voltage, and configured to operate in a normal mode, in which the image data is converted into the data voltage, or to operate in a test mode based on a test mode signal;
- a connection line comprising one end connected with the input pad unit and an opposite end connected with the output pad unit;
- and
- a test line comprising one end connected with the input pad unit and an opposite end connected to a test pad to receive a test signal for testing the display driver integrated circuit,
- wherein the input pad unit comprises:
- a test input bump connected with the one end of the test line;
- a driving input bump connected with the one end of the connection line;
- and
- a switch unit configured to electrically connect the internal line with the driving input bump in the normal mode and configured to electrically connect the internal line with the test input bump in the test mode.
A display driver device comprising:
- a timing controller including an output pad unit and a test mode control unit;
- a display driver integrated circuit configured to operate in a normal mode or a test mode, the display driver integrated circuit having an input pad unit connected via a connection line with the output pad unit of the timing controller, the display driver integrated circuit configured to generate a data voltage based on image data received from the timing controller;
- a test line electrically connected at one end with the input pad unit of the display driver integrated circuit and an opposite end configured to receive a test signal;
- wherein the display driver integrated circuit is configured to operate in the normal mode or in the test mode based on a test mode signal received through the test mode control unit, and
- the timing controller blocks the display driver integrated circuit from receiving image data while in test mode.
Dependencies are inferred from the claim text.