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Display system

A display system and pulse wave technology, applied in the field of compensation circuits, can solve problems such as excessively bright lamp tubes, inoperable lamp tubes, unstable electrical characteristics, etc.

Active Publication Date: 2010-06-09
QISDA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional liquid crystal displays have multiple lamp tubes to provide light sources, and the electrodes control the liquid crystal to allow light to pass or not to display images. However, due to the relationship between the electrical characteristics of the lamp tubes, the equivalent resistance impedance of the lamp tubes will gradually decrease. As a result, the current of the lamp gradually rises, causing the lamp to fail to work correctly within the range of specific electrical specifications, making the lamp may be too bright and reduce the life of the lamp, or the lamp may be too dim to reach the brightness required by the LCD display. All in all, due to the instability of the electrical characteristics of the lamp tube, the traditional liquid crystal display does not emit light stably.
[0003] In terms of production, due to the instability of the electrical characteristics of the lamp tube, the production yield rate is reduced, or the production process must increase the correction program to adjust the current flowing through the lamp tube so that the lamp tube can work correctly within the specific electrical specification range, which often results in The increase of production procedure and time, and then make the production cost increase, so the key point of the present invention is how to solve the phenomenon that traditional liquid crystal display luminescence is unstable

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Embodiment Construction

[0030] In order to make the above-mentioned and other purposes, features, and advantages of the present invention more clearly understood, the preferred embodiments are specifically listed below, together with the accompanying drawings, and are described in detail as follows:

[0031] figure 1 It shows a lamp current thermal drift compensation circuit 100 according to an embodiment of the present invention, here simply referred to as the compensation circuit 100, and the compensation circuit 100 can be applied in a display system, especially a liquid crystal display system. The compensation circuit 100 includes an adjustment unit 120, a pulse wave generation unit 160 and a lamp L 101 and L 102 , the adjustment unit 120 includes a resistor R 121 , R 122 and R 124 , NTC thermistor R th1 , capacitance C 124 and C 122 . Such as figure 1 shown, the NTC thermistor R th1 and resistor R 121 In parallel and coupled between the DC voltage Vcc and the node P1, the resistor R ...

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Abstract

Disclosed is a display system, comprising an adjusting unit, a pulse generating unit and a strip lamp. The adjusting unit comprises a thermal resistor and can generate adjusting signals according to the surrounding temperature and the DC voltage. The pulse generating unit generates a pulse drive signal according to the adjusting signals. When the surrounding temperature drops, the work period of the pulse drive signal increases; when the surrounding temperature rises, the work period of the pulse drive signal decreases. The strip lamp radiates according to the work period of the pulse drive signal. The display system solves the problem of unstable radiation on conventional liquid crystal displays.

Description

technical field [0001] The invention relates to a compensation circuit, in particular to a compensation circuit applicable to a liquid crystal display system. Background technique [0002] Traditional liquid crystal displays have multiple lamp tubes to provide light sources, and the electrodes control the liquid crystal to allow light to pass or not to display images. However, due to the relationship between the electrical characteristics of the lamp tubes, the equivalent resistance impedance of the lamp tubes will gradually decrease. As a result, the current of the lamp gradually rises, causing the lamp to fail to work correctly within the range of specific electrical specifications, making the lamp may be too bright and reduce the life of the lamp, or the lamp may be too dim to reach the brightness required by the LCD display. All in all, due to the unstable electrical characteristics of the lamp tube, the traditional liquid crystal display does not emit light stably. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34G09G3/20
Inventor 吴有校
Owner QISDA CORP