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Source driver and display employing source driver

A source driver, display technology, applied in the direction of static indicator, instrument, reliability improvement and modification, etc., can solve the problems of increasing production cost and large power consumption, etc.

Inactive Publication Date: 2011-01-12
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current sources IS1 and IS2 in the transmitter 210 need to provide a relatively large current (about 2mA) to the pair of single data lines, thus causing a large amount of power consumption
Furthermore, the number of single data lines used by the circuit 200 is twice that of the TTL interface, thereby increasing the manufacturing cost

Method used

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  • Source driver and display employing source driver
  • Source driver and display employing source driver
  • Source driver and display employing source driver

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Embodiment Construction

[0012] Certain terms are used in the specification and following claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This description and the following claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the criterion for distinguishing. "Includes" mentioned throughout the specification and the following claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0013] Please refer to...

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Abstract

The invention discloses a source driver, which comprises a receiver and a channel. The receiver is used for receiving a digital signal at an input node so as to generate a received signal at an output node, and comprises a first switch, a second switch and a voltage-limiting circuit, wherein the first switch selectively connects the output node of the receiver to first reference voltage based on the digital signal; the second switch connects the output node of the receiver to second reference voltage based on the digital signal; the voltage-limiting circuit is coupled between the input node and the output node of the receiver and is used for limiting the voltage level of the input node of the receiver; and the channel generates driving voltage based on the received signal.

Description

technical field [0001] The present invention relates to transmitters and receivers, especially transmitters and receivers applied to displays. Background technique [0002] Please refer to figure 1 , figure 1 It is a schematic diagram of a conventional transistor-transistor logic (TTL) interface 100 . like figure 1 As shown, the TTL interface 100 includes a transmitter 110 and a receiver 120 , wherein the receiver 120 receives a digital signal via a single data line L. As shown in FIG. However, for the TTL interface 100, generally speaking, the digital signal needs to have a relatively large swing, and the electromagnetic interference (electronic-magnetic interference, EMI) will be relatively serious, resulting in the limitation of its operating frequency. . [0003] In order to solve the problems of electromagnetic interference and operating frequency in the TTL interface 100 , a reduced swing differential signaling (RSDS) circuit is proposed. figure 2 It is a schema...

Claims

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Application Information

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IPC IPC(8): G09G3/00G09G3/20H03K19/003
Inventor 颜育仁
Owner HIMAX TECH LTD
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