IP Library Granted Patent US 7,830,353
Granted Patent B2
US 7,830,353 · App. 11/373,183 · Granted Nov 9, 2010

Method for transmitting control signal of chip-on-glass liquid crystal display

Assignee: Himax Technologies Limited
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Quick Facts
Patent No.
US 7,830,353
App. No.
11/373,183
Granted
Nov 9, 2010
Kind
B2
Abstract

A method for transmitting control signals of a liquid crystal display is provided. The LCD includes a timing controller. The method packs the control signals of the timing controller into a control packet which comprises a header field and a control item having a control field and a data field. The header field indicates the start of the control packet, the control field records a type of an event, and the data field records a parameter of the event. The control packet is transmitted on one or a limited number of transmission lines.

Claims (17)

1. A method for transmitting control signals of a liquid crystal display including a timing controller , the method comprising:

packing at least one of the control signals of the timing controller into a control packet which comprises a header field, a control field and a data field, wherein the header field indicates the start of the control packet, the control field records a type of an event, and the data field records a parameter of the event;

transmitting the control packet on a transmission line coupled to a middle source driver of the liquid crystal display; and

transmitting the control packet by the middle source driver to a plurality of neighboring source drivers at a first side and a second side of the middle source driver.

2. An analyzing method for analyzing control packets from a timing controller which integrates control signals into the control packets, each control packet having a header field for indicating the start of the control packet and a control item for recording a type and a parameter of an event, the method comprising:

receiving the control packets from a transmission line by a middle source driver;

transmitting, by the middle source driver, the control packets to a plurality of neighboring source drivers at a first side and a second side of the middle source driver;

determining the start of one control packet by identifying the header field with a predetermined pattern;

analyzing the control item of the control packet for identifying the type and the parameter of the event; and

generating control signals by executing the event.

3. The method according to claim 2 , wherein the control signals comprise a polarity signal(POL), a gate driver start signal (STV), a gate clock signal (CPV), a gate driver output enable signal (OEV), a source driver start signal (STH) and a load signal (TP).

4. The method according to claim 2 , wherein one or more of the control signals are respectively generated by a pull high event and a pull low event.

5. The method according to claim 2 , wherein one or more of the control signals are respectively generated by a pull high event and a disable event after a per-determined period of time.

6. The method according to claim 2 , wherein an initialization signal is packed as an initialization packet transmitted on the transmission line for executing an initialization event on a chip-on-glass liquid crystal display.

7. The method according to claim 6 , wherein the initialization signal is a DC signal.

8. The method according to claim 1 , wherein the neighboring source drivers of the liquid crystal display are serially-connected at the first side and the second side of the middle source driver, respectively; the control packet further comprises a target identification, and the timing controller designates one of the middle and neighboring source drivers to receive the control packet by the target identification.

9. The method according to claim 2 , wherein at least one gate driver is coupled to one of the neighboring source drivers.

Assignments (2)
CHANGE OF NAME Recorded Sep 21, 2010
From: HIMAX TECHNOLOGIES, INC.
To: HIMAX TECHNOLOGIES LIMITED
Reel/Frame 025023/0924 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2006
From: CHEN, CHIEN-RU; CHEN, JUNG-ZONE
To: HIMAX TECHNOLOGIES, INC.
Reel/Frame 017679/0416 →
Priority Claims (1)
TW 94107569 A · Mar 11, 2005 · national
Continuity (1)
Related Publication 20060202938A1 · Sep 14, 2006