Display apparatus and method of driving the display apparatus

• US 9,685,128 B2
• Filed: 03/09/2015
• Issued: 06/20/2017
• Est. Priority Date: 08/19/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Moon, Kyung-Hwan
• Primary Examiner(s): ABDULSELAM, ABBAS I
• Application Number:
  US14/642,338
• Publication Number:
  US 20160055819A1
• Time in Patent Office: 834 Days
• CPC Class Codes: G09G 2320/0285 using tables for spatial correction of display data
• CPC Class Codes: G09G 2330/026 Arrangements or methods related to booting a display
• CPC Class Codes: G09G 2370/08 Details of image data interface between the display device controller and the data line driver circuit
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A display apparatus includes a set control circuit configured to generate a plurality of transmission signals and transmitting the transmission signals through a transmitting interface, a display control circuit configured to receive the transmission signals through a receiving interface and to drive a display panel based on the transmission signals, and a transmission channel connecting the transmitting interface and the receiving interface, and configured to transfer the transmission signals. The display control circuit is configured to transmit and receive a transmission signal with the set control circuit through the transmission channel, and to control the set control circuit to determine a signal level of the transmission signal into an optimal signal level being a receivable signal level for the display control circuit.

Claims

1. A display apparatus, comprising:

a set control circuit configured to generate a plurality of transmission signals and transmitting the transmission signals through a transmitting interface;

a display control circuit configured to receive the transmission signals through a receiving interface and to drive a display panel based on the transmission signals; and

a transmission channel directly physically connecting the transmitting interface and the receiving interface, and configured to transfer the transmission signals,

the display control circuit configured to transmit and receive a transmission signal with the set control circuit through the transmission channel, and to control the set control circuit to determine a signal level of the transmission signal and adaptively adjust the signal level of the transmission signal according to a channel environment solely of the transmission channel between the set control circuit and the display control circuit into an optimal signal level being a receivable signal level for the display control circuit that reduces power consumption.

2. The display apparatus of claim 1, wherein the display control circuit comprises a look up table which comprises a plurality of offset levels for adjusting the signal level of the transmission signal.

3. The display apparatus of claim 2, wherein the transmission signals comprise a low-power signal and a high-speed signal.

4. The display apparatus of claim 3, wherein the look up table comprises a plurality of low offset levels corresponding the low-power signal and a plurality of high offset levels corresponding to the high-speed signal.

5. The display apparatus of claim 3, wherein the low-power signal comprises a clock signal and a command signal, and the high-speed signal comprises a data signal.

6. The display apparatus of claim 3, wherein the display control circuit is configured to adjust a signal level of at least one of the low-power signal and the high-speed signal.

7. The display apparatus of claim 3, wherein the transmitting and receiving interfaces comprises a Mobile Industry Processor Interface (“

MIPI”

) mode.

8. The display apparatus of claim 2, wherein the display control circuit is configured to gradually adjust the signal level of the transmission signal using the offset levels according to whether the transmission signal transmitted from the set control circuit is normal, during an initial driving period.

9. The display apparatus of claim 1, wherein the transmission channel comprises a printed circuit board on which the set control circuit is disposed, a flexible circuit board is connected to the display control circuit and a connector connecting the printed circuit board and the flexible circuit board.

10. The display apparatus of claim 9, wherein the display control circuit is disposed in a peripheral area of the display panel, and comprises a timing controller configured to control a driving timing of the display panel and a data driver circuit configured to drive a data line of the display panel.

11. The display apparatus of claim 10, wherein the set control circuit comprises a battery.

12. A method of driving a display apparatus comprising:

transmitting a plurality of transmission signals through a transmitting interface of a set control circuit;

receiving the transmission signals through a receiving interface of a display control circuit;

driving a display panel based on received transmission signals; and

transmitting and receiving a transmission signal through a transmission channel to determine a signal level of the transmission signal and adaptively adjusting the signal level of the transmission signal according to a channel environment solely of the transmission channel between the set control circuit and the display control circuit into an optimal signal level being a receivable signal level for the display control circuit, during an initial driving period that reduces power consumption.

13. The method of claim 12, further comprising:

adjusting the signal level of the transmission signal using a plurality of offset levels in stored a look up table.

14. The method of claim 13, wherein the plurality of transmission signals comprises a low-power signal and a high-speed signal.

15. The method of claim 14, wherein the look up table comprises a plurality of low offset levels corresponding to the low-power signal and a plurality of high offset levels corresponding to the high-speed signal.

16. The method of claim 14, wherein a signal level of one of the low-power signal and the high-speed signal is adjusted using the look up table.

17. The method of claim 14, wherein the transmitting and receiving interfaces comprises a Mobile Industry Processor Interface mode.

18. The method of claim 13, wherein the signal level of the transmission signal is gradually adjusted using the plurality of offset levels according to whether the transmission signal received from the set control circuit is normal during an initial driving period.

19. The method of claim 18, further comprising:

transmitting the transmission signal of the optimal signal level to the display control circuit for driving a display panel.