CN2569184Y - Reflective liquid crystal projection display device with stable picture quality - Google Patents
Reflective liquid crystal projection display device with stable picture quality Download PDFInfo
- Publication number
- CN2569184Y CN2569184Y CN 02252065 CN02252065U CN2569184Y CN 2569184 Y CN2569184 Y CN 2569184Y CN 02252065 CN02252065 CN 02252065 CN 02252065 U CN02252065 U CN 02252065U CN 2569184 Y CN2569184 Y CN 2569184Y
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- reflective liquid
- temperature
- crystal light
- light valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model relates to a reflective and liquid-crystal projection display device with stable picture quality, which comprises a deflective polar-light beam-splitter prism, two lenses, two reflective liquid-crystal light valves, a fan, radiating fins, a heater and a temperature sensor, wherein, the lenses and the reflective liquid-crystal light valves are respectively positioned at both contrary sides of the deflective polar-light beam-splitter prism, the radiating fins are arranged on the reflective liquid-crystal light valves, the heater is attached tightly between the reflective liquid-crystal light valves and the radiating fins, and the temperature sensor can sense temperature variation and drive the heater. The temperature sensor is arranged on one of the reflective liquid-crystal light valves and the radiating fins. When the temperature sensor senses that the temperature is lower than the temperature given value, the reflective liquid-crystal light valves can be heated by starting the heater when the utility model is used. The temperature of the reflective liquid-crystal light valves can be maintained, and the efficiency that the picture quality has no influence through the anti-change for environment temperature can be achieved.
Description
[technical field]
The utility model is the stable reflection type liquid crystal projection display equipment of a kind of picture quality, particularly relates to the reflection type liquid crystal projection display equipment that a kind of picture quality can not change along with environment temperature.
[background technology]
Present developing audio-visual products is towards large-sized trend development, for example back projection TV, single rifle projector, and plasma-screen television etc., and the crystal projection framework is a main flow wherein.And the image of liquid crystal projection display, mainly compiling synthetic luminous point pixel by Red Green Blue light is formed, and the visual experience of image can be along with the variation of image brilliance difference to some extent, because different brightness will produce different light and shade contrast effects, therefore want the clearly shape of identification image, the contrast of brightness just contrast (contrast ratio) is a considerable ring.And quality and usefulness in order to promote image, generally utilize camera lens with ray cast before screen, can earlier in liquid-crystal projecting displaying device, the light beam that light emitted goes out be handled, to reach best image quality and contrast through control.
On the selling market, made product needs through after the QC tests such as operation function, reliability and intensity, life-span the listing of just can dispatching from the factory usually.Yet after manufacturer sells product all over the world, but find to have the situation of image quality contrast reduction in the part area, the reduction that this will cause product quality has a strong impact on goodwill.But, when manufacturer sends the above-mentioned computer that goes wrong back to inspection of origin, but the detection numerical value of finding the image quality contrast is presented in the normal scope, therefore the people is arranged just at image quality verification test in addition, yet find that but all are normal, there is no any different shape, the not good reason of contrast can occur, industry still is difficult to understand the problem place at present.
For this reason, the utility model designer is just studied the problems referred to above, find that above-mentioned image quality the inaccurate situation of contrast can occur and have only partly particular locality, and these regional temperature be not too high be exactly low, especially Sichuan for example in high temperature area comparatively, Xinjiang-----etc. ground, or in the Qingdao for example of low temp area comparatively, Dalian-----etc. ground, the situation of contrast error is comparatively serious, therefore the error of above-mentioned contrast should be relevant with environment temperature, and after testing through comprehensive and detailed contrast, the utility model designer thinks that the problem reason may appear in the liquid-crystal projecting displaying device.
As shown in Figure 1, be that the Dan Yiyi reflective liquid crystal light valve is an example, a kind of reflection type liquid crystal projection display equipment 1 is in the past comprised to right-hand in regular turn by the left among the figure: camera lens (lens) 11, polar biased light Amici prism (PBS) 12,1/4 ripple plate (wave plate) 13, and reflective liquid crystal light valve 14.This reflection type liquid crystal projection display equipment 1 more comprises the Polarizer (Polarizer) 15 of position below polar biased light Amici prism 12.When using, the polarized light 2 of tool polarization state (for example S polarization) can pass through Polarizer 15, and directly be projected to polar biased light Amici prism 12, and be reflected and penetrate 1/4 ripple plate 13 and arrive reflective liquid crystal light valves 14, the coloured light 10 of S polarization can be subjected to the modulation of reflective liquid crystal light valve 14, and changes over to be reflected after the P polarization state and send, and the polarized light 2 of this P polarization can be by 1/4 ripple plate 13, polar biased light Amici prism 12, and behind the camera lens 11, be incident upon again on the default screen (figure does not show).
By above-mentioned structure as can be known, polarized light 2 can be processed in reflection type liquid crystal projection display equipment 1, thereby make 1 effect of reflection type liquid crystal projection display equipment give birth to heat, so the variation on the temperature is arranged.In the middle of, because polarized light 2 is reflected on reflective liquid crystal light valve 14, therefore heat is less is accumulated on the reflective liquid crystal light valve 14, on radiating treatment than the fiduciary level that is easier to keep reflective liquid crystal light valve 14, need only a bit distinguished and admirablely just the torrid zone can be walked, make reflective liquid crystal light valve 14 just can maintain the opereating specification of temperature easily.Just because of this, the temperature of reflective liquid crystal light valve 14 also changes along with the change of ambient temperature with regard to being easy to, so the quality of projection is also just different along with the temperature difference of environment of living in.
As shown in Figure 1, though, liquid-crystal projecting displaying device 1 can be installed fan 16 above polar biased light Amici prism 11, yet this fan 16 can only be walked the torrid zone on the reflective liquid crystal light valve 14 partly, it shown in the arrow among the figure flow direction of wind, though so can but can't regulate and control bulk temperature effectively in order to keep the running of reflective liquid crystal light valve 14.
Therefore, a controller 17 is just installed again additional in the manufacturer that has on fan 16, rotating speed in order to regulation and control fan 16, when temperature is higher, just heighten rotating speed, when temperature is low, just downgrade rotating speed, yet high rotating speed of fan and slow-revving thermal convection heat pass coefficient (h, convection heat transfer coefficient) under the little situation of difference, this method can only provide the heat dissipation of about 5 ℃ of dynamic temperature-control range, example one: suppose that we desire to keep the temperature of reflective liquid crystal light valve 14 at 45 ℃ for reflective liquid crystal light valve, when ambient temperature was 35 ℃, fan can make the temperature of reflective liquid crystal light valve 14 at 45 ℃ with high rotation speed operation.When ambient temperature dropped to 30 ℃, fan 16 also can make the temperature of reflective liquid crystal light valve 14 at 45 ℃ with slow-speed of revolution running.In case ambient temperature is lower than below 30 ℃, make fan 16 also can't make the temperature of reflective liquid crystal light valve 14 remain on 45 ℃ with slow-speed of revolution running.If therefore keep the temperature of reflective liquid crystal light valve 14 merely with fan 16 high and low rotating speed, can only be in specific 5 ℃, for example range operation of 35～30 ℃ ambient temperature.Therefore make the temperature of reflective liquid crystal light valve 14 influenced by ambient temperature very big.So when this reflection type liquid crystal projection display equipment 1 is sold to non-normal temperature area, ground such as the Sichuan of higher temperatures, Xinjiang for example, or during ground such as the Qingdao of lower temperature, Dalian, reflection type liquid crystal projection display equipment 1 can change along with environmental change, therefore projection quality also can be with it and variation, so the ability of anti-environment temperature is low.
[utility model content]
Fundamental purpose of the present utility model, be to provide a kind of can anti-environment temperature change and make the stable reflection type liquid crystal projection display equipment of the impregnable picture quality of picture quality.
The stable reflection type liquid crystal projection display equipment of a kind of picture quality of the present utility model comprises: polar biased light Amici prism, fan, reflective liquid crystal light valve, heat radiator, well heater, and temperature inductor.This polar biased light Amici prism can reflect the polarized light of first polarization state and allow the polarized light of second polarization state directly penetrate.This fan is positioned at the top of polar biased light Amici prism.This reflective liquid crystal light valve is positioned at the right-hand of polar biased light Amici prism, but when conducting modulation and change the polarization polarization state of light, the polarized light of reciprocal different polarization states is sent in reflection again.This heat radiator is installed in the right side of reflective liquid crystal light valve, can be in order to the heat of row's scattered reflection formula liquid crystal light valve.This well heater is close between reflective liquid crystal light valve and heat radiator, can be in order to the heating reflective liquid crystal light valve.This temperature inductor is mounted on one of them of reflective liquid crystal light valve and heat radiator, but the variation of sensing temperature is heated in order to the control heater start.When using, the polarized light of first polarization state is projected to polar biased light Amici prism, and the arrival reflective liquid crystal light valve that is reflected, modulation through reflective liquid crystal light valve, and change over second polarized light that shakes attitude and be reflected later on and send, and this second polarized light that shakes attitude can be incident upon on the screen through camera lens by after the polar biased light Amici prism again.This fan and heat radiator can be in order to heat radiations, and sense temperature when being lower than desired temperature when temperature inductor, can start this reflective liquid crystal light valve of heater heats, in order to keep the temperature of this reflective liquid crystal light valve.
[description of drawings]
Below by most preferred embodiment and accompanying drawing the stable reflection type liquid crystal projection display equipment of picture quality of the present utility model is elaborated, in the accompanying drawing:
Fig. 1 is a use synoptic diagram of reflection type liquid crystal projection display equipment in the past, and the conduct and the wind direction of light is described.
Fig. 2 is a use synoptic diagram of a preferred embodiment of reflection type liquid crystal projection display equipment of the present utility model, and the conduct and the wind direction of light is described.
Fig. 3 is a part of schematic rear view of this preferred embodiment, and heat radiator, well heater are described, and the perspective relation of temperature inductor.
Fig. 4 is a use synoptic diagram of another preferred embodiment of reflection type liquid crystal projection display equipment of the present utility model.
[embodiment]
For convenience of description, following embodiment, components identical is represented with identical label.
As shown in Figures 2 and 3, it is a preferred embodiment of reflection type liquid crystal projection display equipment of the present utility model, be to be example with individual reflection formula liquid crystal light valve, and in the following description, be the polarized light that S polarized light 4 is considered as tool first polarization state, and with P polarized light 4 ' the be considered as polarized light of tool second polarization state.This reflection type liquid crystal projection display equipment is to comprise: but vertical reflection S polarized light 4 and allow the polar biased light Amici prism (PBS) 31 of P polarized light 4 ' directly penetrate, the below of contiguous polar biased light Amici prism 31 and hold S polarized light 4 by absorb P polarized light 4 ' Polarizer (Polarizer) 32, be positioned at the fan 33 of the top of polar biased light Amici prism 31, be positioned at the camera lens (lens) 34 of the left of this polar biased light Amici prism 31, be positioned at right-hand reflective liquid crystal light valve (LCOS panel) 35 of polar biased light Amici prism 31, the position is at 1/4 ripple plate (waveplate) 36 of 35 of polar biased light Amici prism 31 and reflective liquid crystal light valves, be installed in the heat radiator (heat sink) 37 on the right side of reflective liquid crystal light valve 35, be close to the well heater (heater) 38 of 37 of reflective liquid crystal light valve 35 and heat radiator, and be installed in the temperature inductor (thermal sensor) 39 on the reflective liquid crystal light valve 35.
Above-mentioned reflective liquid crystal light valve 35 has substrate 351, and is arranged on the liquid crystal panel 352 in the left side of substrate 351.When these reflective liquid crystal light valve 35 conductings, modulation and change the polarization polarization state of light in addition, the polarized light of reciprocal different polarization states is sent in reflection again.This 1/4 ripple plate 36 can be in order to increase the contrast of image.This well heater 38 can be given birth to the plate of heat for one deck, is closely to paste to be clipped in 37 of reflective liquid crystal light valve 35 and heat radiator, can reduce thermal contact resistance, reduction thermal loss.This temperature inductor 39 is in the central authorities that are installed in substrate 351 in the present embodiment, temperature variation that can this reflective liquid crystal light valve 35 of sensing, and heat via control circuit 391 electrical control heater 38 starts.Before dispatching from the factory, can set regulating and controlling temperature, for example be set in reflective liquid crystal light valve and close a certain temperature of (between 40～50 ℃) in the pretty good temperature range of effect in details in a play not acted out on stage, but told through dialogues, when being higher or lower than this temperature range, will sensing and make control circuit 391 starts.Certainly, temperature inductor 39 also can be installed on the heat radiator 37 in design, is used for the temperature variation of sensing heat radiator 37.
When using, the polarized light 4 of tool polarization state (for example S polarization) can pass through Polarizer 32, and directly be projected to polar biased light Amici prism 31, and be reflected and penetrate 1/4 ripple plate 36 and arrive reflective liquid crystal light valves 35, when reflective liquid crystal light valve 35 conductings, the polarized light 4 of S polarization can be subjected to the modulation of reflective liquid crystal light valve 35, and change over the P polarization state and be reflected later on and send, and the polarized light 4 of this P polarization ' meeting is by 1/4 ripple plate 36, polar biased light Amici prism 31, and behind the camera lens 34, be incident upon again on the default screen (figure does not show).
On temperature controlling, suppose that we desire to keep reflective liquid crystal light valve 35 and set temperature at 45 ℃, when the temperature that senses substrate 351 when temperature inductor 39 is lower than 45 ℃, this control circuit 391 will electrically be controlled this well heater 38 and begin heating, when reaching the temperature of setting, just can close the power supply of well heater 38, therefore state step, to keep the temperature that substrate 351 is being set by heavily being covered with.And to sense substrate 351 residing environment temperatures higher for example 40 ℃ the time when temperature inductor 39, can't start well heater 38, and only by the start of heat radiator 37 and fan 33, the temperature maintenance that makes substrate 351 is near design temperature.
As shown in Figure 4, it is another preferred embodiment of reflection type liquid crystal projection display equipment of the present utility model, the present embodiment place different with the foregoing description is: present embodiment more comprises in the rotating shaft (figure does not show) that is installed in fan 33, can be in order to the rotational speed governor 5 of regulation and control fan 33 rotating speeds.Rotational speed governor 5 also electrically connects with control circuit 391.But auxiliary heater 38 control temperature are with the regulation and control load of relative minimizing well heater 38.On temperature controlling is handled, when the temperature that senses substrate 351 when temperature inductor 39 is lower than the temperature that sets, this control circuit 391 is except meeting starts well heater 38, simultaneously more can electrically control this rotational speed governor 5, the rotating speed of fan 33 is reduced even stop, to reduce scattering and disappearing of heat.So just can be controlled at exactly in the range of set temperature, projection quality can not changed along with environment temperature.
In addition,, can close this well heater 38 and fan 33, only, come the temperature of control basal plate 351 merely by substrate 351 itself and heat radiator 37 when temperature reaches the limit place of design temperature.
From the above, more in the past with Temperature Treatment of the present utility model, suppose temperature that we desire to keep reflective liquid crystal light valve 35 at 45 ℃, when the ambient temperature lowest temperature was 30 ℃, fan can make the temperature maintenance of reflective liquid crystal light valve 35 at 45 ℃ with slow-speed of revolution running.Installed additional after the well heater 38, it additionally provides the heat that gives on the reflective liquid crystal light valve 35 enough when ambient temperature is 10 ℃, and the temperature maintenance on the reflective liquid crystal light valve 35 is at 45 ℃.And when the external environment maximum temperature is 35 ℃, temperature on the reflective liquid crystal light valve 35 has just reached 45 ℃, after finned 37, the temperature of reflective liquid crystal light valve 35 is descended, make that when ambient temperature is 40 ℃ the temperature on the reflective liquid crystal light valve reaches 45 ℃.Therefore opereating specification in the past only is 30～35 ℃, and opereating specification of the present utility model then is 10～40 ℃, so the utility model just is enough to deal with human house normal temperature range.
Take a broad view of above-mentioned, structure of the present utility model, feature can provide a kind of picture quality stable reflection type liquid crystal projection display equipment really, control is in the fixing temperature reflective liquid crystal light valve 35, in order to solving the problem that projection quality changes to some extent along with the difference of external environment, and can have change that can anti-environment temperature and make the impregnable effect of picture quality.
Claims (4)
1. reflection type liquid crystal projection display equipment that picture quality is stable, comprise: a polar biased light Amici prism, is positioned at the fan of the top of this polar biased light Amici prism, and a right-hand reflective liquid crystal light valve that is positioned at this polar biased light Amici prism; This polar biased light Amici prism can reflect the polarized light of one first polarization state and allow the polarized light of one second polarization state directly penetrate; But this reflective liquid crystal light valve modulation and change the polarization polarization state of light when conducting, the polarized light of reciprocal different polarization states is sent in reflection again;
It is characterized in that: more comprise one and be installed in the right side of reflective liquid crystal light valve and can be close in order to the heat radiator, of the heat of row's scattered reflection formula liquid crystal light valve between reflective liquid crystal light valve and heat radiator and can be, but and one of them that is installed in reflective liquid crystal light valve and heat radiator goes up and sensing temperature changes the temperature inductor that heats in order to the control heater start in order to the well heater of heating reflective liquid crystal light valve.
2. the reflection type liquid crystal projection display equipment that picture quality as claimed in claim 1 is stable is characterized in that: more comprise a rotational speed governor that is installed in the rotating speed that is used to control this fan on this fan.
3. the reflection type liquid crystal projection display equipment that picture quality as claimed in claim 1 is stable is characterized in that: the Polarizer that more comprises the below of contiguous this polar biased light Amici prism.
4. the reflection type liquid crystal projection display equipment that picture quality as claimed in claim 1 is stable is characterized in that: more comprise the 1/4 ripple plate of a gap digit between this polar biased light Amici prism and reflective liquid crystal light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252065 CN2569184Y (en) | 2002-09-03 | 2002-09-03 | Reflective liquid crystal projection display device with stable picture quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252065 CN2569184Y (en) | 2002-09-03 | 2002-09-03 | Reflective liquid crystal projection display device with stable picture quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2569184Y true CN2569184Y (en) | 2003-08-27 |
Family
ID=33721683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02252065 Expired - Fee Related CN2569184Y (en) | 2002-09-03 | 2002-09-03 | Reflective liquid crystal projection display device with stable picture quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2569184Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410729C (en) * | 2005-04-21 | 2008-08-13 | 株式会社日立制作所 | Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus |
| CN101666967B (en) * | 2009-10-19 | 2011-04-06 | 四川长虹电器股份有限公司 | Device for improving normal operation of DLP projection in low temperature environment and method thereof |
| CN103217861A (en) * | 2013-03-08 | 2013-07-24 | 苏州佳世达光电有限公司 | Reflection-type short-focus projector |
| WO2018090764A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳市光峰光电技术有限公司 | Method of starting optical modulation device, and associated projection apparatus |
| CN110687740A (en) * | 2019-11-19 | 2020-01-14 | 四川长虹电器股份有限公司 | System for DLP projection low temperature starts |
| CN114326266A (en) * | 2020-09-30 | 2022-04-12 | 中强光电股份有限公司 | Light modulation module and reflective projection device |
-
2002
- 2002-09-03 CN CN 02252065 patent/CN2569184Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410729C (en) * | 2005-04-21 | 2008-08-13 | 株式会社日立制作所 | Projection type image display apparatus, and optical unit and polarization splitting unit each used for the apparatus |
| CN101666967B (en) * | 2009-10-19 | 2011-04-06 | 四川长虹电器股份有限公司 | Device for improving normal operation of DLP projection in low temperature environment and method thereof |
| CN103217861A (en) * | 2013-03-08 | 2013-07-24 | 苏州佳世达光电有限公司 | Reflection-type short-focus projector |
| CN103217861B (en) * | 2013-03-08 | 2015-03-25 | 苏州佳世达光电有限公司 | Reflection-type short-focus projector |
| WO2018090764A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳市光峰光电技术有限公司 | Method of starting optical modulation device, and associated projection apparatus |
| CN108073018A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | The startup method of optic modulating device and dependent projections equipment |
| CN110687740A (en) * | 2019-11-19 | 2020-01-14 | 四川长虹电器股份有限公司 | System for DLP projection low temperature starts |
| CN114326266A (en) * | 2020-09-30 | 2022-04-12 | 中强光电股份有限公司 | Light modulation module and reflective projection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10607569B2 (en) | High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation | |
| US5404185A (en) | Liquid crystal display for projection systems | |
| US5597223A (en) | Display apparatus | |
| US4763993A (en) | Liquid crystal display for projection systems | |
| US5187510A (en) | Liquid crystal display for projection systems | |
| US6776489B2 (en) | Color separation/combination optical system, image display optical system, and projection type image display apparatus | |
| CN102422342A (en) | System and method for controlling the operation parameters of a display in response to current draw | |
| CN2569184Y (en) | Reflective liquid crystal projection display device with stable picture quality | |
| CN1752803A (en) | Projection type video display | |
| US20220187266A1 (en) | System and method for detecting gas recirculation or airway occlusion | |
| CN1267777C (en) | Reflection type liquid crystal display element, display unit, projection optial system, and projector display system | |
| CN103557943B (en) | A kind of Infrared scene simulation with image device | |
| US20180048849A1 (en) | Electronic display with high performance characteristics | |
| CN105206217A (en) | Display processing method and device as well as display device | |
| AU2022238796A1 (en) | Fan control for electronic display assemblies | |
| CN1196014C (en) | Liquid crystal display element and display device using same | |
| JP5866866B2 (en) | projector | |
| US11663367B1 (en) | Display managed privacy mode to present information handling system visual images | |
| CN216212270U (en) | Dynamic backlight multi-connected screen | |
| US5227821A (en) | Liquid crystal display for projection systems | |
| CN100535820C (en) | Method for controlling temp of display device and its device | |
| JPH09166790A (en) | Display device | |
| CN113253494A (en) | Detection device and detection method for liquid crystal display assembly | |
| US20230333423A1 (en) | Fan control for electronic display assemblies | |
| US5861927A (en) | Liquid crystal display device with uniform characteristics over whole display area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: PROKIA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DAYI SCIENCE AND TECHNOLOGY CO., LTD Effective date: 20040116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040116 Address after: Taiwan County of Tainan Province Shi Xiang Tainan Science Park South Road No. 3 4 floor Patentee after: Prokia Technology Co., Ltd. Address before: Taiwan County of Tainan Province Shi Xiang Tainan Science Park South Road No. 3 Patentee before: Dayi Science and Technology Co., Ltd |
|
| ASS | Succession or assignment of patent right |
Owner name: JUNLIN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: PROKIA TECHNOLOGY CO., LTD. Effective date: 20070126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070126 Address after: Taiwan County, Taipei, China three heavy City Creek Street, No. 14, one of the 6 floor Patentee after: DigiMedia Technology Co., Ltd. Address before: Taiwan County of Tainan Province Shi Xiang Tainan Science Park South Road No. 3 4 floor Patentee before: Prokia Technology Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |