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Projection display device and light source driving method

A projection display and light source technology, applied in the direction of light source, electric light source, lighting device, etc., can solve the problems of increasing the brightness of the projector, increasing the proportion of light-colored blocks, etc., and achieve the effect of improving the service life

Active Publication Date: 2011-01-26
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the total power of the light source does not increase in one cycle, but it is equivalent to increasing the proportion of light-colored blocks in the color wheel, and the brightness of the projector increases.

Method used

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  • Projection display device and light source driving method
  • Projection display device and light source driving method
  • Projection display device and light source driving method

Examples

Experimental program
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Embodiment Construction

[0020] A projection display device according to an embodiment of the present invention includes a control driving unit, a light source (for example, a bulb, LED, etc.), a color wheel, and a timing unit. The control driving unit drives the light source; the color wheel has a first color block, a second color block, a third color block, and a fourth color block, the first color block is white or cyan, so The second to fourth color blocks are respectively one of red, blue, and green. In other embodiments, more color blocks may be included, such as cyan blocks, yellow blocks, and so on. The timing unit records the use time of the light source, and the timing unit has, for example, a non-volatile memory, which can save the use time of the light source even when the display is powered off. The timing unit can be integrated with the control drive unit in one chip, for example. When the use time of the light source is before the first time point, the control driving unit uses the fir...

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PUM

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Abstract

The invention discloses a protection display device and a light source driving method and relates the fields of the display devices and light source driving methods. The technical problem to be solved by the invention is to provide the projection display device which is characterized by comprising a control driving unit, a light source, a color wheel and a timing unit, wherein the control driving unit is used for driving the light source; the color wheel comprises a first color block and a second color block, the first color block is white or cyan, and the second color block is red, blue, yellow or green; the timing unit is used for recording the using time of the light source; when the using time of the light source is before a first time point, the control driving unit uses the first mode to drive the light source; and when the using time of the light source is after the first time point, the control driving unit then uses the second mode to drive the light source.

Description

【Technical Field】 [0001] The invention relates to a display device and a light source driving method thereof, in particular to a projection display device and a light source driving method thereof. 【Background technique】 [0002] In recent years, the application of projectors has gradually spread to general households from occasions such as meeting briefings in the past. Currently, the main projection technologies are: cathode ray tube (CRT) projection technology, liquid crystal display (LCD) projection technology, digital light source processing (DLP) projection technology, and monocrystalline silicon liquid crystal display panel (LCOS) projection technology. Compared with other technologies, digital light source processing projection technology has the advantages of small size and light weight. The basic principle of digital light source processing projection technology is described in Chinese Patent Application 200510136244.3 "Light Source Structure of Projector", which inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G03B21/14H05B37/02
CPCY02B20/42Y02B20/40
Inventor 丛志杰
Owner QISDA OPTRONICS (SUZHOU) CO LTD